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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
213516ef | 3 | Copyright (C) 1986-2023 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 | |
f00aae0f | 90 | static void |
264f9890 PA |
91 | create_sals_from_location_spec_default (location_spec *locspec, |
92 | linespec_result *canonical); | |
983af33b | 93 | |
eee031e2 TT |
94 | static void create_breakpoints_sal (struct gdbarch *, |
95 | struct linespec_result *, | |
96 | gdb::unique_xmalloc_ptr<char>, | |
97 | gdb::unique_xmalloc_ptr<char>, | |
98 | enum bptype, | |
99 | enum bpdisp, int, int, | |
100 | int, | |
eee031e2 | 101 | int, int, int, unsigned); |
983af33b | 102 | |
a6535de1 TT |
103 | static int can_use_hardware_watchpoint |
104 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 105 | |
b713485d | 106 | static void mention (const breakpoint *); |
c906108c | 107 | |
7a3e3265 | 108 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
c906108c | 109 | |
752a2291 PA |
110 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
111 | ||
06edf0c0 PA |
112 | static struct breakpoint * |
113 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
114 | enum bptype type, | |
7ab97995 | 115 | int loc_enabled, int thread); |
06edf0c0 | 116 | |
d8de7963 | 117 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, bool); |
76897487 | 118 | |
a6d9a66e UW |
119 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
120 | CORE_ADDR bpaddr, | |
60270718 AB |
121 | enum bptype bptype, |
122 | struct program_space *pspace); | |
76897487 | 123 | |
d8de7963 AB |
124 | static bool watchpoint_locations_match (const struct bp_location *loc1, |
125 | const struct bp_location *loc2); | |
85d721b8 | 126 | |
d8de7963 AB |
127 | static bool breakpoint_locations_match (const struct bp_location *loc1, |
128 | const struct bp_location *loc2, | |
129 | bool sw_hw_bps_match = false); | |
7f32a4d5 | 130 | |
d8de7963 AB |
131 | static bool breakpoint_location_address_match (struct bp_location *bl, |
132 | const struct address_space *aspace, | |
133 | CORE_ADDR addr); | |
f1310107 | 134 | |
d8de7963 AB |
135 | static bool breakpoint_location_address_range_overlap (struct bp_location *, |
136 | const address_space *, | |
137 | CORE_ADDR, int); | |
d35ae833 | 138 | |
834c0d03 | 139 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 140 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 141 | |
313f3b21 | 142 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 143 | |
a14ed312 | 144 | static int hw_breakpoint_used_count (void); |
c906108c | 145 | |
a1398e0c PA |
146 | static int hw_watchpoint_use_count (struct breakpoint *); |
147 | ||
148 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
149 | enum bptype type, | |
150 | int *other_type_used); | |
c906108c | 151 | |
816338b5 SS |
152 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
153 | int count); | |
c906108c | 154 | |
f431efe5 | 155 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 156 | |
264f9890 | 157 | static std::vector<symtab_and_line> bkpt_probe_decode_location_spec |
5d926615 | 158 | (struct breakpoint *b, |
264f9890 | 159 | location_spec *locspec, |
5d926615 TT |
160 | struct program_space *search_pspace); |
161 | ||
6e14e441 PA |
162 | static bool bl_address_is_meaningful (bp_location *loc); |
163 | ||
d8a77e4c AB |
164 | static int find_loc_num_by_location (const bp_location *loc); |
165 | ||
44702360 PA |
166 | /* update_global_location_list's modes of operation wrt to whether to |
167 | insert locations now. */ | |
168 | enum ugll_insert_mode | |
169 | { | |
170 | /* Don't insert any breakpoint locations into the inferior, only | |
171 | remove already-inserted locations that no longer should be | |
172 | inserted. Functions that delete a breakpoint or breakpoints | |
173 | should specify this mode, so that deleting a breakpoint doesn't | |
174 | have the side effect of inserting the locations of other | |
175 | breakpoints that are marked not-inserted, but should_be_inserted | |
176 | returns true on them. | |
177 | ||
178 | This behavior is useful is situations close to tear-down -- e.g., | |
179 | after an exec, while the target still has execution, but | |
180 | breakpoint shadows of the previous executable image should *NOT* | |
181 | be restored to the new image; or before detaching, where the | |
182 | target still has execution and wants to delete breakpoints from | |
183 | GDB's lists, and all breakpoints had already been removed from | |
184 | the inferior. */ | |
185 | UGLL_DONT_INSERT, | |
186 | ||
a25a5a45 PA |
187 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
188 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
189 | UGLL_MAY_INSERT, |
190 | ||
a25a5a45 PA |
191 | /* Insert locations now, irrespective of |
192 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
193 | stopped right now, and the user did "continue". We need to | |
194 | insert breakpoints _before_ resuming the target, but | |
195 | UGLL_MAY_INSERT wouldn't insert them, because | |
196 | breakpoints_should_be_inserted_now returns false at that point, | |
197 | as no thread is running yet. */ | |
04086b45 | 198 | UGLL_INSERT |
44702360 PA |
199 | }; |
200 | ||
201 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 202 | |
44702360 | 203 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 204 | |
74960c60 | 205 | static void insert_breakpoint_locations (void); |
a5606eee | 206 | |
0b39b52e | 207 | static void trace_pass_command (const char *, int); |
1042e4c0 | 208 | |
558a9d82 YQ |
209 | static void set_tracepoint_count (int num); |
210 | ||
f2478a7e | 211 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 212 | |
d8de7963 AB |
213 | /* Return true if B refers to a static tracepoint set by marker ("-m"), |
214 | zero otherwise. */ | |
983af33b | 215 | |
d8de7963 | 216 | static bool strace_marker_p (struct breakpoint *b); |
0fb4aa4b | 217 | |
264f9890 PA |
218 | static void bkpt_probe_create_sals_from_location_spec |
219 | (location_spec *locspec, | |
03ada39e | 220 | struct linespec_result *canonical); |
264f9890 PA |
221 | static void tracepoint_probe_create_sals_from_location_spec |
222 | (location_spec *locspec, | |
03ada39e | 223 | struct linespec_result *canonical); |
8613a476 | 224 | |
74421c0b | 225 | const struct breakpoint_ops code_breakpoint_ops = |
8613a476 | 226 | { |
264f9890 | 227 | create_sals_from_location_spec_default, |
eee031e2 | 228 | create_breakpoints_sal, |
8613a476 TT |
229 | }; |
230 | ||
55aa24fb | 231 | /* Breakpoints set on probes. */ |
a678887d | 232 | static const struct breakpoint_ops bkpt_probe_breakpoint_ops = |
8613a476 | 233 | { |
264f9890 | 234 | bkpt_probe_create_sals_from_location_spec, |
eee031e2 | 235 | create_breakpoints_sal, |
8613a476 | 236 | }; |
55aa24fb | 237 | |
bac7c5cf | 238 | /* Tracepoints set on probes. */ |
a678887d | 239 | static const struct breakpoint_ops tracepoint_probe_breakpoint_ops = |
8613a476 | 240 | { |
264f9890 | 241 | tracepoint_probe_create_sals_from_location_spec, |
eee031e2 | 242 | create_breakpoints_sal, |
8613a476 | 243 | }; |
bac7c5cf | 244 | |
1c2cbcf1 PA |
245 | /* Implementation of abstract dtors. These must exist to satisfy the |
246 | linker. */ | |
247 | ||
248 | breakpoint::~breakpoint () | |
249 | { | |
250 | } | |
251 | ||
74421c0b | 252 | code_breakpoint::~code_breakpoint () |
1c2cbcf1 PA |
253 | { |
254 | } | |
255 | ||
256 | catchpoint::~catchpoint () | |
257 | { | |
258 | } | |
259 | ||
098f1272 | 260 | /* The structure to be used in regular breakpoints. */ |
74421c0b | 261 | struct ordinary_breakpoint : public code_breakpoint |
098f1272 | 262 | { |
74421c0b | 263 | using code_breakpoint::code_breakpoint; |
73063f51 | 264 | |
7dd8e7ae | 265 | int resources_needed (const struct bp_location *) override; |
7bd86313 | 266 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 267 | void print_mention () const override; |
4d1ae558 | 268 | void print_recreate (struct ui_file *fp) const override; |
098f1272 TT |
269 | }; |
270 | ||
9a71ed14 PA |
271 | /* Internal breakpoints. These typically have a lifetime the same as |
272 | the program, and they end up installed on the breakpoint chain with | |
273 | a negative breakpoint number. They're visible in "maint info | |
274 | breakpoints", but not "info breakpoints". */ | |
74421c0b | 275 | struct internal_breakpoint : public code_breakpoint |
098f1272 | 276 | { |
752a2291 PA |
277 | internal_breakpoint (struct gdbarch *gdbarch, |
278 | enum bptype type, CORE_ADDR address) | |
74421c0b | 279 | : code_breakpoint (gdbarch, type) |
752a2291 PA |
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 | ||
9a71ed14 PA |
297 | /* Momentary breakpoints. These typically have a lifetime of some run |
298 | control command only, are always thread-specific, and have 0 for | |
299 | breakpoint number. I.e., there can be many momentary breakpoints | |
300 | on the breakpoint chain and they all same the same number (zero). | |
301 | They're visible in "maint info breakpoints", but not "info | |
302 | breakpoints". */ | |
74421c0b | 303 | struct momentary_breakpoint : public code_breakpoint |
098f1272 | 304 | { |
7ab97995 PA |
305 | momentary_breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
306 | program_space *pspace_, | |
307 | const struct frame_id &frame_id_, | |
308 | int thread_) | |
74421c0b | 309 | : code_breakpoint (gdbarch_, bptype) |
7ab97995 PA |
310 | { |
311 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
312 | or tail-called one. */ | |
313 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
314 | ||
315 | /* Momentary breakpoints are always thread-specific. */ | |
316 | gdb_assert (thread_ > 0); | |
317 | ||
318 | pspace = pspace_; | |
319 | enable_state = bp_enabled; | |
320 | disposition = disp_donttouch; | |
321 | frame_id = frame_id_; | |
322 | thread = thread_; | |
323 | } | |
73063f51 | 324 | |
1fd30a47 TT |
325 | void re_set () override; |
326 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 327 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 328 | void print_mention () const override; |
098f1272 TT |
329 | }; |
330 | ||
331 | /* DPrintf breakpoints. */ | |
5ad71d67 | 332 | struct dprintf_breakpoint : public ordinary_breakpoint |
098f1272 | 333 | { |
73063f51 TT |
334 | using ordinary_breakpoint::ordinary_breakpoint; |
335 | ||
f293a0b5 TT |
336 | void re_set () override; |
337 | int breakpoint_hit (const struct bp_location *bl, | |
338 | const address_space *aspace, | |
339 | CORE_ADDR bp_addr, | |
340 | const target_waitstatus &ws) override; | |
4d1ae558 | 341 | void print_recreate (struct ui_file *fp) const override; |
f293a0b5 | 342 | void after_condition_true (struct bpstat *bs) override; |
098f1272 TT |
343 | }; |
344 | ||
ec45bb67 TT |
345 | /* Ranged breakpoints. */ |
346 | struct ranged_breakpoint : public ordinary_breakpoint | |
347 | { | |
b925bf21 PA |
348 | explicit ranged_breakpoint (struct gdbarch *gdbarch, |
349 | const symtab_and_line &sal_start, | |
350 | int length, | |
264f9890 PA |
351 | location_spec_up start_locspec, |
352 | location_spec_up end_locspec) | |
73063f51 TT |
353 | : ordinary_breakpoint (gdbarch, bp_hardware_breakpoint) |
354 | { | |
b925bf21 PA |
355 | bp_location *bl = add_location (sal_start); |
356 | bl->length = length; | |
357 | ||
358 | disposition = disp_donttouch; | |
359 | ||
264f9890 PA |
360 | locspec = std::move (start_locspec); |
361 | locspec_range_end = std::move (end_locspec); | |
73063f51 TT |
362 | } |
363 | ||
ec45bb67 TT |
364 | int breakpoint_hit (const struct bp_location *bl, |
365 | const address_space *aspace, | |
366 | CORE_ADDR bp_addr, | |
367 | const target_waitstatus &ws) override; | |
368 | int resources_needed (const struct bp_location *) override; | |
7bd86313 | 369 | enum print_stop_action print_it (const bpstat *bs) const override; |
a67bcaba | 370 | bool print_one (bp_location **) const override; |
ec45bb67 | 371 | void print_one_detail (struct ui_out *) const override; |
b713485d | 372 | void print_mention () const override; |
4d1ae558 | 373 | void print_recreate (struct ui_file *fp) const override; |
ec45bb67 TT |
374 | }; |
375 | ||
6d7a8c56 TT |
376 | /* Static tracepoints with marker (`-m'). */ |
377 | struct static_marker_tracepoint : public tracepoint | |
378 | { | |
73063f51 TT |
379 | using tracepoint::tracepoint; |
380 | ||
264f9890 PA |
381 | std::vector<symtab_and_line> decode_location_spec |
382 | (struct location_spec *locspec, | |
6d7a8c56 TT |
383 | struct program_space *search_pspace) override; |
384 | }; | |
385 | ||
d3ce09f5 SS |
386 | /* The style in which to perform a dynamic printf. This is a user |
387 | option because different output options have different tradeoffs; | |
388 | if GDB does the printing, there is better error handling if there | |
389 | is a problem with any of the arguments, but using an inferior | |
390 | function lets you have special-purpose printers and sending of | |
391 | output to the same place as compiled-in print functions. */ | |
392 | ||
393 | static const char dprintf_style_gdb[] = "gdb"; | |
394 | static const char dprintf_style_call[] = "call"; | |
395 | static const char dprintf_style_agent[] = "agent"; | |
396 | static const char *const dprintf_style_enums[] = { | |
397 | dprintf_style_gdb, | |
398 | dprintf_style_call, | |
399 | dprintf_style_agent, | |
400 | NULL | |
401 | }; | |
402 | static const char *dprintf_style = dprintf_style_gdb; | |
403 | ||
404 | /* The function to use for dynamic printf if the preferred style is to | |
405 | call into the inferior. The value is simply a string that is | |
406 | copied into the command, so it can be anything that GDB can | |
407 | evaluate to a callable address, not necessarily a function name. */ | |
408 | ||
e0700ba4 | 409 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
410 | |
411 | /* The channel to use for dynamic printf if the preferred style is to | |
412 | call into the inferior; if a nonempty string, it will be passed to | |
413 | the call as the first argument, with the format string as the | |
414 | second. As with the dprintf function, this can be anything that | |
415 | GDB knows how to evaluate, so in addition to common choices like | |
416 | "stderr", this could be an app-specific expression like | |
417 | "mystreams[curlogger]". */ | |
418 | ||
e0700ba4 | 419 | static std::string dprintf_channel; |
d3ce09f5 SS |
420 | |
421 | /* True if dprintf commands should continue to operate even if GDB | |
422 | has disconnected. */ | |
491144b5 | 423 | static bool disconnected_dprintf = true; |
d3ce09f5 | 424 | |
5cea2a26 PA |
425 | struct command_line * |
426 | breakpoint_commands (struct breakpoint *b) | |
427 | { | |
d1b0a7bf | 428 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 429 | } |
3daf8fe5 | 430 | |
f3b1572e PA |
431 | /* Flag indicating that a command has proceeded the inferior past the |
432 | current breakpoint. */ | |
433 | ||
491144b5 | 434 | static bool breakpoint_proceeded; |
f3b1572e | 435 | |
956a9fb9 | 436 | const char * |
2cec12e5 AR |
437 | bpdisp_text (enum bpdisp disp) |
438 | { | |
4a64f543 MS |
439 | /* NOTE: the following values are a part of MI protocol and |
440 | represent values of 'disp' field returned when inferior stops at | |
441 | a breakpoint. */ | |
bc043ef3 | 442 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 443 | |
2cec12e5 AR |
444 | return bpdisps[(int) disp]; |
445 | } | |
c906108c | 446 | |
4a64f543 | 447 | /* Prototypes for exported functions. */ |
c906108c | 448 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 449 | if such is available. */ |
c906108c SS |
450 | static int can_use_hw_watchpoints; |
451 | ||
920d2a44 AC |
452 | static void |
453 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
454 | struct cmd_list_element *c, | |
455 | const char *value) | |
456 | { | |
6cb06a8c TT |
457 | gdb_printf (file, |
458 | _("Debugger's willingness to use " | |
459 | "watchpoint hardware is %s.\n"), | |
460 | value); | |
920d2a44 AC |
461 | } |
462 | ||
fa8d40ab JJ |
463 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
464 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 465 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
466 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
467 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
468 | static void |
469 | show_pending_break_support (struct ui_file *file, int from_tty, | |
470 | struct cmd_list_element *c, | |
471 | const char *value) | |
472 | { | |
6cb06a8c TT |
473 | gdb_printf (file, |
474 | _("Debugger's behavior regarding " | |
475 | "pending breakpoints is %s.\n"), | |
476 | value); | |
920d2a44 | 477 | } |
fa8d40ab | 478 | |
491144b5 | 479 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 480 | set with "break" but falling in read-only memory. |
491144b5 | 481 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 482 | use hardware breakpoints. */ |
491144b5 | 483 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
484 | static void |
485 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
486 | struct cmd_list_element *c, | |
487 | const char *value) | |
488 | { | |
6cb06a8c TT |
489 | gdb_printf (file, |
490 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
491 | value); | |
765dc015 VP |
492 | } |
493 | ||
a25a5a45 PA |
494 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
495 | stopped, and immediately inserts any new breakpoints as soon as | |
496 | they're created. If off (default), GDB keeps breakpoints off of | |
497 | the target as long as possible. That is, it delays inserting | |
498 | breakpoints until the next resume, and removes them again when the | |
499 | target fully stops. This is a bit safer in case GDB crashes while | |
500 | processing user input. */ | |
491144b5 | 501 | static bool always_inserted_mode = false; |
72d0e2c5 | 502 | |
33e5cbd6 | 503 | static void |
74960c60 | 504 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 505 | struct cmd_list_element *c, const char *value) |
74960c60 | 506 | { |
6cb06a8c TT |
507 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
508 | value); | |
74960c60 VP |
509 | } |
510 | ||
b57bacec PA |
511 | /* See breakpoint.h. */ |
512 | ||
33e5cbd6 | 513 | int |
a25a5a45 | 514 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 515 | { |
a25a5a45 PA |
516 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
517 | { | |
518 | /* If breakpoints are global, they should be inserted even if no | |
519 | thread under gdb's control is running, or even if there are | |
520 | no threads under GDB's control yet. */ | |
521 | return 1; | |
522 | } | |
5b6d1e4f | 523 | else |
a25a5a45 | 524 | { |
a25a5a45 PA |
525 | if (always_inserted_mode) |
526 | { | |
527 | /* The user wants breakpoints inserted even if all threads | |
528 | are stopped. */ | |
529 | return 1; | |
530 | } | |
531 | ||
5b6d1e4f PA |
532 | for (inferior *inf : all_inferiors ()) |
533 | if (inf->has_execution () | |
534 | && threads_are_executing (inf->process_target ())) | |
535 | return 1; | |
372316f1 PA |
536 | |
537 | /* Don't remove breakpoints yet if, even though all threads are | |
538 | stopped, we still have events to process. */ | |
08036331 | 539 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 540 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 541 | return 1; |
a25a5a45 PA |
542 | } |
543 | return 0; | |
33e5cbd6 | 544 | } |
765dc015 | 545 | |
b775012e LM |
546 | static const char condition_evaluation_both[] = "host or target"; |
547 | ||
548 | /* Modes for breakpoint condition evaluation. */ | |
549 | static const char condition_evaluation_auto[] = "auto"; | |
550 | static const char condition_evaluation_host[] = "host"; | |
551 | static const char condition_evaluation_target[] = "target"; | |
552 | static const char *const condition_evaluation_enums[] = { | |
553 | condition_evaluation_auto, | |
554 | condition_evaluation_host, | |
555 | condition_evaluation_target, | |
556 | NULL | |
557 | }; | |
558 | ||
559 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
560 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
561 | ||
562 | /* Global that we use to display information to the user (gets its value from | |
563 | condition_evaluation_mode_1. */ | |
564 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
565 | ||
566 | /* Translate a condition evaluation mode MODE into either "host" | |
567 | or "target". This is used mostly to translate from "auto" to the | |
568 | real setting that is being used. It returns the translated | |
569 | evaluation mode. */ | |
570 | ||
571 | static const char * | |
572 | translate_condition_evaluation_mode (const char *mode) | |
573 | { | |
574 | if (mode == condition_evaluation_auto) | |
575 | { | |
576 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
577 | return condition_evaluation_target; | |
578 | else | |
579 | return condition_evaluation_host; | |
580 | } | |
581 | else | |
582 | return mode; | |
583 | } | |
584 | ||
585 | /* Discovers what condition_evaluation_auto translates to. */ | |
586 | ||
587 | static const char * | |
588 | breakpoint_condition_evaluation_mode (void) | |
589 | { | |
590 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
591 | } | |
592 | ||
593 | /* Return true if GDB should evaluate breakpoint conditions or false | |
594 | otherwise. */ | |
595 | ||
d8de7963 | 596 | static bool |
b775012e LM |
597 | gdb_evaluates_breakpoint_condition_p (void) |
598 | { | |
599 | const char *mode = breakpoint_condition_evaluation_mode (); | |
600 | ||
601 | return (mode == condition_evaluation_host); | |
602 | } | |
603 | ||
c906108c SS |
604 | /* Are we executing breakpoint commands? */ |
605 | static int executing_breakpoint_commands; | |
606 | ||
c02f5703 MS |
607 | /* Are overlay event breakpoints enabled? */ |
608 | static int overlay_events_enabled; | |
609 | ||
e09342b5 | 610 | /* See description in breakpoint.h. */ |
491144b5 | 611 | bool target_exact_watchpoints = false; |
e09342b5 | 612 | |
c906108c | 613 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 614 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 615 | current breakpoint. */ |
c906108c | 616 | |
5c44784c JM |
617 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
618 | for (B = breakpoint_chain; \ | |
619 | B ? (TMP=B->next, 1): 0; \ | |
620 | B = TMP) | |
c906108c | 621 | |
7cc221ef | 622 | /* Chains of all breakpoints defined. */ |
c906108c | 623 | |
81e6b8eb | 624 | static struct breakpoint *breakpoint_chain; |
c906108c | 625 | |
240edef6 | 626 | /* See breakpoint.h. */ |
43892fdf | 627 | |
240edef6 | 628 | breakpoint_range |
43892fdf SM |
629 | all_breakpoints () |
630 | { | |
631 | return breakpoint_range (breakpoint_chain); | |
632 | } | |
633 | ||
240edef6 | 634 | /* See breakpoint.h. */ |
1428b37a | 635 | |
240edef6 | 636 | breakpoint_safe_range |
1428b37a SM |
637 | all_breakpoints_safe () |
638 | { | |
639 | return breakpoint_safe_range (all_breakpoints ()); | |
640 | } | |
641 | ||
f6d17b2b SM |
642 | /* See breakpoint.h. */ |
643 | ||
644 | tracepoint_range | |
645 | all_tracepoints () | |
646 | { | |
647 | return tracepoint_range (breakpoint_chain); | |
648 | } | |
649 | ||
39ef2f62 | 650 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 651 | |
5d51cd5d | 652 | static std::vector<bp_location *> bp_locations; |
876fa593 | 653 | |
055c879f SM |
654 | /* See breakpoint.h. */ |
655 | ||
656 | const std::vector<bp_location *> & | |
48d7020b SM |
657 | all_bp_locations () |
658 | { | |
659 | return bp_locations; | |
660 | } | |
661 | ||
e0d9a270 SM |
662 | /* Range to iterate over breakpoint locations at a given address. */ |
663 | ||
664 | struct bp_locations_at_addr_range | |
665 | { | |
666 | using iterator = std::vector<bp_location *>::iterator; | |
667 | ||
668 | bp_locations_at_addr_range (CORE_ADDR addr) | |
669 | { | |
670 | struct compare | |
671 | { | |
672 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
673 | { return loc->address < addr_; } | |
674 | ||
675 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
676 | { return addr_ < loc->address; } | |
677 | }; | |
678 | ||
679 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
680 | addr, compare ()); | |
681 | ||
682 | m_begin = it_pair.first; | |
683 | m_end = it_pair.second; | |
684 | } | |
685 | ||
686 | iterator begin () const | |
687 | { return m_begin; } | |
688 | ||
689 | iterator end () const | |
690 | { return m_end; } | |
691 | ||
692 | private: | |
693 | iterator m_begin; | |
694 | iterator m_end; | |
695 | }; | |
696 | ||
697 | /* Return a range to iterate over all breakpoint locations exactly at address | |
698 | ADDR. | |
699 | ||
700 | If it's needed to iterate multiple times on the same range, it's possible | |
701 | to save the range in a local variable and use it multiple times: | |
702 | ||
703 | auto range = all_bp_locations_at_addr (addr); | |
704 | ||
705 | for (bp_location *loc : range) | |
706 | // use loc | |
707 | ||
708 | for (bp_location *loc : range) | |
709 | // use loc | |
710 | ||
711 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
712 | the range's boundaries. Just remember not to change the bp_locations vector | |
713 | in the mean time, as it could make the range's iterators stale. */ | |
714 | ||
715 | static bp_locations_at_addr_range | |
716 | all_bp_locations_at_addr (CORE_ADDR addr) | |
717 | { | |
718 | return bp_locations_at_addr_range (addr); | |
719 | } | |
720 | ||
4a64f543 | 721 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 722 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 723 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 724 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 725 | an address you need to read. */ |
876fa593 | 726 | |
f5336ca5 | 727 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 728 | |
4a64f543 MS |
729 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
730 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
731 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
732 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 733 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 734 | |
f5336ca5 | 735 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 736 | |
4a64f543 | 737 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
738 | from the bp_locations array, but for which a hit may still be |
739 | reported by a target. */ | |
1123588c | 740 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 741 | |
c906108c SS |
742 | /* Number of last breakpoint made. */ |
743 | ||
95a42b64 TT |
744 | static int breakpoint_count; |
745 | ||
86b17b60 PA |
746 | /* The value of `breakpoint_count' before the last command that |
747 | created breakpoints. If the last (break-like) command created more | |
748 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
749 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
750 | static int prev_breakpoint_count; | |
c906108c | 751 | |
1042e4c0 SS |
752 | /* Number of last tracepoint made. */ |
753 | ||
95a42b64 | 754 | static int tracepoint_count; |
1042e4c0 | 755 | |
6149aea9 PA |
756 | static struct cmd_list_element *breakpoint_set_cmdlist; |
757 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 758 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 759 | |
468d015d | 760 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
d8de7963 | 761 | static bool |
468d015d JJ |
762 | breakpoint_enabled (struct breakpoint *b) |
763 | { | |
0d381245 | 764 | return (b->enable_state == bp_enabled); |
468d015d JJ |
765 | } |
766 | ||
c906108c SS |
767 | /* Set breakpoint count to NUM. */ |
768 | ||
95a42b64 | 769 | static void |
fba45db2 | 770 | set_breakpoint_count (int num) |
c906108c | 771 | { |
86b17b60 | 772 | prev_breakpoint_count = breakpoint_count; |
c906108c | 773 | breakpoint_count = num; |
4fa62494 | 774 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
775 | } |
776 | ||
86b17b60 PA |
777 | /* Used by `start_rbreak_breakpoints' below, to record the current |
778 | breakpoint count before "rbreak" creates any breakpoint. */ | |
779 | static int rbreak_start_breakpoint_count; | |
780 | ||
95a42b64 TT |
781 | /* Called at the start an "rbreak" command to record the first |
782 | breakpoint made. */ | |
86b17b60 | 783 | |
c80049d3 | 784 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 785 | { |
86b17b60 | 786 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
787 | } |
788 | ||
789 | /* Called at the end of an "rbreak" command to record the last | |
790 | breakpoint made. */ | |
86b17b60 | 791 | |
c80049d3 | 792 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 793 | { |
86b17b60 | 794 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
795 | } |
796 | ||
4a64f543 | 797 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
798 | |
799 | void | |
fba45db2 | 800 | clear_breakpoint_hit_counts (void) |
c906108c | 801 | { |
43892fdf | 802 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
803 | b->hit_count = 0; |
804 | } | |
805 | ||
c906108c | 806 | \f |
48cb2d85 VP |
807 | /* Return the breakpoint with the specified number, or NULL |
808 | if the number does not refer to an existing breakpoint. */ | |
809 | ||
810 | struct breakpoint * | |
811 | get_breakpoint (int num) | |
812 | { | |
43892fdf | 813 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
814 | if (b->number == num) |
815 | return b; | |
816 | ||
43892fdf | 817 | return nullptr; |
48cb2d85 | 818 | } |
5c44784c | 819 | |
78805ff8 PW |
820 | /* Return TRUE if NUM refer to an existing breakpoint that has |
821 | multiple code locations. */ | |
822 | ||
823 | static bool | |
824 | has_multiple_locations (int num) | |
825 | { | |
826 | for (breakpoint *b : all_breakpoints ()) | |
827 | if (b->number == num) | |
828 | return b->loc != nullptr && b->loc->next != nullptr; | |
829 | ||
830 | return false; | |
831 | } | |
832 | ||
c906108c | 833 | \f |
adc36818 | 834 | |
b775012e LM |
835 | /* Mark locations as "conditions have changed" in case the target supports |
836 | evaluating conditions on its side. */ | |
837 | ||
838 | static void | |
839 | mark_breakpoint_modified (struct breakpoint *b) | |
840 | { | |
b775012e LM |
841 | /* This is only meaningful if the target is |
842 | evaluating conditions and if the user has | |
843 | opted for condition evaluation on the target's | |
844 | side. */ | |
845 | if (gdb_evaluates_breakpoint_condition_p () | |
846 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
847 | return; | |
848 | ||
849 | if (!is_breakpoint (b)) | |
850 | return; | |
851 | ||
40cb8ca5 | 852 | for (bp_location *loc : b->locations ()) |
b775012e LM |
853 | loc->condition_changed = condition_modified; |
854 | } | |
855 | ||
856 | /* Mark location as "conditions have changed" in case the target supports | |
857 | evaluating conditions on its side. */ | |
858 | ||
859 | static void | |
860 | mark_breakpoint_location_modified (struct bp_location *loc) | |
861 | { | |
862 | /* This is only meaningful if the target is | |
863 | evaluating conditions and if the user has | |
864 | opted for condition evaluation on the target's | |
865 | side. */ | |
866 | if (gdb_evaluates_breakpoint_condition_p () | |
867 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
868 | ||
869 | return; | |
870 | ||
871 | if (!is_breakpoint (loc->owner)) | |
872 | return; | |
873 | ||
874 | loc->condition_changed = condition_modified; | |
875 | } | |
876 | ||
877 | /* Sets the condition-evaluation mode using the static global | |
878 | condition_evaluation_mode. */ | |
879 | ||
880 | static void | |
eb4c3f4a | 881 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
882 | struct cmd_list_element *c) |
883 | { | |
b775012e LM |
884 | const char *old_mode, *new_mode; |
885 | ||
886 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
887 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
888 | { | |
889 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
890 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
891 | "Using host evaluation mode instead.")); | |
892 | return; | |
893 | } | |
894 | ||
895 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
896 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
897 | ||
abf1152a JK |
898 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
899 | settings was "auto". */ | |
900 | condition_evaluation_mode = condition_evaluation_mode_1; | |
901 | ||
b775012e LM |
902 | /* Only update the mode if the user picked a different one. */ |
903 | if (new_mode != old_mode) | |
904 | { | |
b775012e LM |
905 | /* If the user switched to a different evaluation mode, we |
906 | need to synch the changes with the target as follows: | |
907 | ||
908 | "host" -> "target": Send all (valid) conditions to the target. | |
909 | "target" -> "host": Remove all the conditions from the target. | |
910 | */ | |
911 | ||
b775012e LM |
912 | if (new_mode == condition_evaluation_target) |
913 | { | |
914 | /* Mark everything modified and synch conditions with the | |
915 | target. */ | |
48d7020b | 916 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 917 | mark_breakpoint_location_modified (loc); |
24b21115 | 918 | } |
b775012e LM |
919 | else |
920 | { | |
921 | /* Manually mark non-duplicate locations to synch conditions | |
922 | with the target. We do this to remove all the conditions the | |
923 | target knows about. */ | |
48d7020b | 924 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
925 | if (is_breakpoint (loc->owner) && loc->inserted) |
926 | loc->needs_update = 1; | |
927 | } | |
928 | ||
929 | /* Do the update. */ | |
44702360 | 930 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
931 | } |
932 | ||
933 | return; | |
934 | } | |
935 | ||
936 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
937 | what "auto" is translating to. */ | |
938 | ||
939 | static void | |
940 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
941 | struct cmd_list_element *c, const char *value) | |
942 | { | |
943 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
944 | gdb_printf (file, |
945 | _("Breakpoint condition evaluation " | |
946 | "mode is %s (currently %s).\n"), | |
947 | value, | |
948 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 949 | else |
6cb06a8c TT |
950 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
951 | value); | |
b775012e LM |
952 | } |
953 | ||
b5fa468f TBA |
954 | /* Parse COND_STRING in the context of LOC and set as the condition |
955 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
956 | the number of LOC within its owner. In case of parsing error, mark | |
957 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
958 | ||
959 | static void | |
960 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
961 | int bp_num, int loc_num) | |
962 | { | |
963 | bool has_junk = false; | |
964 | try | |
965 | { | |
966 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
967 | block_for_pc (loc->address), 0); | |
968 | if (*cond_string != 0) | |
969 | has_junk = true; | |
970 | else | |
971 | { | |
972 | loc->cond = std::move (new_exp); | |
973 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
974 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
975 | "location %d, enabling.\n"), | |
976 | bp_num, loc_num); | |
b5fa468f TBA |
977 | |
978 | loc->disabled_by_cond = false; | |
979 | } | |
980 | } | |
981 | catch (const gdb_exception_error &e) | |
982 | { | |
983 | if (loc->enabled) | |
984 | { | |
985 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
986 | BP_NUM is 0 if the breakpoint is being defined for the first | |
987 | time using the "break ... if ..." command, and non-zero if | |
988 | already defined. */ | |
989 | if (bp_num != 0) | |
990 | warning (_("failed to validate condition at location %d.%d, " | |
991 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
992 | else | |
993 | warning (_("failed to validate condition at location %d, " | |
994 | "disabling:\n %s"), loc_num, e.what ()); | |
995 | } | |
996 | ||
997 | loc->disabled_by_cond = true; | |
998 | } | |
999 | ||
1000 | if (has_junk) | |
1001 | error (_("Garbage '%s' follows condition"), cond_string); | |
1002 | } | |
1003 | ||
adc36818 | 1004 | void |
7a26bd4d | 1005 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 1006 | int from_tty, bool force) |
adc36818 | 1007 | { |
4c55e970 | 1008 | if (*exp == 0) |
3a5c3e22 | 1009 | { |
6f781ee3 | 1010 | b->cond_string.reset (); |
3a5c3e22 | 1011 | |
4c55e970 | 1012 | if (is_watchpoint (b)) |
98ed24fb | 1013 | gdb::checked_static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
1014 | else |
1015 | { | |
b5fa468f | 1016 | int loc_num = 1; |
40cb8ca5 | 1017 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
1018 | { |
1019 | loc->cond.reset (); | |
b5fa468f | 1020 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
1021 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
1022 | "location %d, enabling.\n"), | |
1023 | b->number, loc_num); | |
b5fa468f TBA |
1024 | loc->disabled_by_cond = false; |
1025 | loc_num++; | |
4c55e970 TBA |
1026 | |
1027 | /* No need to free the condition agent expression | |
1028 | bytecode (if we have one). We will handle this | |
1029 | when we go through update_global_location_list. */ | |
1030 | } | |
1031 | } | |
1e620590 | 1032 | |
adc36818 | 1033 | if (from_tty) |
6cb06a8c | 1034 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
1035 | } |
1036 | else | |
1037 | { | |
adc36818 PM |
1038 | if (is_watchpoint (b)) |
1039 | { | |
699bd4cf | 1040 | innermost_block_tracker tracker; |
78319c15 | 1041 | const char *arg = exp; |
4c55e970 | 1042 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 1043 | if (*arg != 0) |
adc36818 | 1044 | error (_("Junk at end of expression")); |
98ed24fb | 1045 | watchpoint *w = gdb::checked_static_cast<watchpoint *> (b); |
4c55e970 | 1046 | w->cond_exp = std::move (new_exp); |
699bd4cf | 1047 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
1048 | } |
1049 | else | |
1050 | { | |
4c55e970 TBA |
1051 | /* Parse and set condition expressions. We make two passes. |
1052 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
1053 | is valid in at least one location. If so, the condition |
1054 | would be accepted. So we go ahead and set the locations' | |
1055 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
1056 | the error and the condition string will be rejected. |
1057 | This two-pass approach is taken to avoid setting the | |
1058 | state of locations in case of a reject. */ | |
40cb8ca5 | 1059 | for (bp_location *loc : b->locations ()) |
4c55e970 | 1060 | { |
b5fa468f TBA |
1061 | try |
1062 | { | |
1063 | const char *arg = exp; | |
1064 | parse_exp_1 (&arg, loc->address, | |
1065 | block_for_pc (loc->address), 0); | |
1066 | if (*arg != 0) | |
1067 | error (_("Junk at end of expression")); | |
1068 | break; | |
1069 | } | |
1070 | catch (const gdb_exception_error &e) | |
1071 | { | |
1072 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
1073 | be the last loc, abandon (if not forced) or continue |
1074 | (if forced). */ | |
1075 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
1076 | throw; |
1077 | } | |
4c55e970 TBA |
1078 | } |
1079 | ||
b5fa468f | 1080 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 1081 | int loc_num = 1; |
40cb8ca5 SM |
1082 | for (bp_location *loc : b->locations ()) |
1083 | { | |
1084 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
1085 | loc_num++; | |
1086 | } | |
adc36818 | 1087 | } |
1e620590 TBA |
1088 | |
1089 | /* We know that the new condition parsed successfully. The | |
1090 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 1091 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 1092 | b->condition_not_parsed = 0; |
adc36818 | 1093 | } |
b775012e LM |
1094 | mark_breakpoint_modified (b); |
1095 | ||
76727919 | 1096 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
1097 | } |
1098 | ||
79aabb73 TBA |
1099 | /* See breakpoint.h. */ |
1100 | ||
1101 | void | |
1102 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
1103 | bool force) | |
1104 | { | |
43892fdf | 1105 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
1106 | if (b->number == bpnum) |
1107 | { | |
1108 | /* Check if this breakpoint has a "stop" method implemented in an | |
1109 | extension language. This method and conditions entered into GDB | |
1110 | from the CLI are mutually exclusive. */ | |
1111 | const struct extension_language_defn *extlang | |
1112 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1113 | ||
1114 | if (extlang != NULL) | |
1115 | { | |
1116 | error (_("Only one stop condition allowed. There is currently" | |
1117 | " a %s stop condition defined for this breakpoint."), | |
1118 | ext_lang_capitalized_name (extlang)); | |
1119 | } | |
1120 | set_breakpoint_condition (b, exp, from_tty, force); | |
1121 | ||
1122 | if (is_breakpoint (b)) | |
1123 | update_global_location_list (UGLL_MAY_INSERT); | |
1124 | ||
1125 | return; | |
1126 | } | |
1127 | ||
1128 | error (_("No breakpoint number %d."), bpnum); | |
1129 | } | |
1130 | ||
b1d4d8d1 TBA |
1131 | /* The options for the "condition" command. */ |
1132 | ||
1133 | struct condition_command_opts | |
1134 | { | |
1135 | /* For "-force". */ | |
1136 | bool force_condition = false; | |
1137 | }; | |
1138 | ||
1139 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1140 | ||
1141 | gdb::option::flag_option_def<condition_command_opts> { | |
1142 | "force", | |
1143 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1144 | N_("Set the condition even if it is invalid for all current locations."), | |
1145 | }, | |
1146 | ||
1147 | }; | |
1148 | ||
1149 | /* Create an option_def_group for the "condition" options, with | |
1150 | CC_OPTS as context. */ | |
1151 | ||
1152 | static inline gdb::option::option_def_group | |
1153 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1154 | { | |
1155 | return {{condition_command_option_defs}, cc_opts}; | |
1156 | } | |
1157 | ||
d55637df TT |
1158 | /* Completion for the "condition" command. */ |
1159 | ||
eb3ff9a5 | 1160 | static void |
6f937416 | 1161 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1162 | completion_tracker &tracker, |
b1d4d8d1 | 1163 | const char *text, const char * /*word*/) |
d55637df | 1164 | { |
b1d4d8d1 TBA |
1165 | bool has_no_arguments = (*text == '\0'); |
1166 | condition_command_opts cc_opts; | |
1167 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1168 | if (gdb::option::complete_options | |
1169 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1170 | return; | |
d55637df | 1171 | |
f1735a53 | 1172 | text = skip_spaces (text); |
b1d4d8d1 | 1173 | const char *space = skip_to_space (text); |
d55637df TT |
1174 | if (*space == '\0') |
1175 | { | |
1176 | int len; | |
d55637df TT |
1177 | |
1178 | if (text[0] == '$') | |
1179 | { | |
b1d4d8d1 | 1180 | tracker.advance_custom_word_point_by (1); |
d55637df | 1181 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1182 | if (!isdigit (text[1])) |
1183 | complete_internalvar (tracker, &text[1]); | |
1184 | return; | |
d55637df TT |
1185 | } |
1186 | ||
b1d4d8d1 TBA |
1187 | /* Suggest the "-force" flag if no arguments are given. If |
1188 | arguments were passed, they either already include the flag, | |
1189 | or we are beyond the point of suggesting it because it's | |
1190 | positionally the first argument. */ | |
1191 | if (has_no_arguments) | |
1192 | gdb::option::complete_on_all_options (tracker, group); | |
1193 | ||
d55637df TT |
1194 | /* We're completing the breakpoint number. */ |
1195 | len = strlen (text); | |
1196 | ||
43892fdf | 1197 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1198 | { |
1199 | char number[50]; | |
1200 | ||
1201 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1202 | ||
1203 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1204 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1205 | } |
d55637df | 1206 | |
eb3ff9a5 | 1207 | return; |
d55637df TT |
1208 | } |
1209 | ||
b1d4d8d1 TBA |
1210 | /* We're completing the expression part. Skip the breakpoint num. */ |
1211 | const char *exp_start = skip_spaces (space); | |
1212 | tracker.advance_custom_word_point_by (exp_start - text); | |
1213 | text = exp_start; | |
1214 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1215 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1216 | } |
1217 | ||
c906108c SS |
1218 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1219 | ||
1220 | static void | |
0b39b52e | 1221 | condition_command (const char *arg, int from_tty) |
c906108c | 1222 | { |
0b39b52e | 1223 | const char *p; |
52f0bd74 | 1224 | int bnum; |
c906108c SS |
1225 | |
1226 | if (arg == 0) | |
e2e0b3e5 | 1227 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1228 | |
1229 | p = arg; | |
733d554a TBA |
1230 | |
1231 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1232 | condition_command_opts cc_opts; |
1233 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1234 | gdb::option::process_options | |
1235 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1236 | |
c906108c | 1237 | bnum = get_number (&p); |
5c44784c | 1238 | if (bnum == 0) |
8a3fe4f8 | 1239 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1240 | |
79aabb73 | 1241 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1242 | } |
1243 | ||
a7bdde9e VP |
1244 | /* Check that COMMAND do not contain commands that are suitable |
1245 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1246 | Throw if any such commands is found. */ |
1247 | ||
a7bdde9e VP |
1248 | static void |
1249 | check_no_tracepoint_commands (struct command_line *commands) | |
1250 | { | |
1251 | struct command_line *c; | |
cc59ec59 | 1252 | |
a7bdde9e VP |
1253 | for (c = commands; c; c = c->next) |
1254 | { | |
a7bdde9e | 1255 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1256 | error (_("The 'while-stepping' command can " |
1257 | "only be used for tracepoints")); | |
a7bdde9e | 1258 | |
12973681 TT |
1259 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1260 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1261 | |
1262 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1263 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1264 | command directly. */ |
1265 | if (strstr (c->line, "collect ") == c->line) | |
1266 | error (_("The 'collect' command can only be used for tracepoints")); | |
1267 | ||
51661e93 VP |
1268 | if (strstr (c->line, "teval ") == c->line) |
1269 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1270 | } |
1271 | } | |
1272 | ||
098f1272 | 1273 | struct longjmp_breakpoint : public momentary_breakpoint |
3b0871f4 | 1274 | { |
73063f51 TT |
1275 | using momentary_breakpoint::momentary_breakpoint; |
1276 | ||
c1fc2657 | 1277 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1278 | }; |
1279 | ||
d77f58be SS |
1280 | /* Encapsulate tests for different types of tracepoints. */ |
1281 | ||
3b0871f4 SM |
1282 | static bool |
1283 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1284 | { |
1285 | return (type == bp_tracepoint | |
1286 | || type == bp_fast_tracepoint | |
7b572efb TT |
1287 | || type == bp_static_tracepoint |
1288 | || type == bp_static_marker_tracepoint); | |
d9b3f62e PA |
1289 | } |
1290 | ||
f2478a7e SM |
1291 | /* See breakpoint.h. */ |
1292 | ||
1293 | bool | |
d77f58be | 1294 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1295 | { |
d9b3f62e | 1296 | return is_tracepoint_type (b->type); |
a7bdde9e | 1297 | } |
d9b3f62e | 1298 | |
a5e364af SM |
1299 | /* Factory function to create an appropriate instance of breakpoint given |
1300 | TYPE. */ | |
1301 | ||
3b003a61 | 1302 | template<typename... Arg> |
74421c0b | 1303 | static std::unique_ptr<code_breakpoint> |
3b003a61 PA |
1304 | new_breakpoint_from_type (struct gdbarch *gdbarch, bptype type, |
1305 | Arg&&... args) | |
a5e364af | 1306 | { |
74421c0b | 1307 | code_breakpoint *b; |
a5e364af | 1308 | |
098f1272 TT |
1309 | switch (type) |
1310 | { | |
1311 | case bp_breakpoint: | |
1312 | case bp_hardware_breakpoint: | |
3b003a61 PA |
1313 | b = new ordinary_breakpoint (gdbarch, type, |
1314 | std::forward<Arg> (args)...); | |
098f1272 TT |
1315 | break; |
1316 | ||
1317 | case bp_fast_tracepoint: | |
1318 | case bp_static_tracepoint: | |
1319 | case bp_tracepoint: | |
3b003a61 PA |
1320 | b = new tracepoint (gdbarch, type, |
1321 | std::forward<Arg> (args)...); | |
098f1272 TT |
1322 | break; |
1323 | ||
6d7a8c56 | 1324 | case bp_static_marker_tracepoint: |
3b003a61 PA |
1325 | b = new static_marker_tracepoint (gdbarch, type, |
1326 | std::forward<Arg> (args)...); | |
6d7a8c56 TT |
1327 | break; |
1328 | ||
098f1272 | 1329 | case bp_dprintf: |
3b003a61 PA |
1330 | b = new dprintf_breakpoint (gdbarch, type, |
1331 | std::forward<Arg> (args)...); | |
098f1272 TT |
1332 | break; |
1333 | ||
098f1272 TT |
1334 | default: |
1335 | gdb_assert_not_reached ("invalid type"); | |
1336 | } | |
a5e364af | 1337 | |
74421c0b | 1338 | return std::unique_ptr<code_breakpoint> (b); |
a5e364af SM |
1339 | } |
1340 | ||
e5dd4106 | 1341 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1342 | breakpoint. This function will throw an exception if a problem is |
1343 | found. */ | |
48cb2d85 | 1344 | |
95a42b64 TT |
1345 | static void |
1346 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1347 | struct command_line *commands) | |
48cb2d85 | 1348 | { |
d77f58be | 1349 | if (is_tracepoint (b)) |
a7bdde9e | 1350 | { |
c9a6ce02 | 1351 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1352 | struct command_line *c; |
1353 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1354 | |
1355 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1356 | might have included a while-stepping action, while the new |
1357 | ones might not. */ | |
c9a6ce02 PA |
1358 | t->step_count = 0; |
1359 | ||
1360 | /* We need to verify that each top-level element of commands is | |
1361 | valid for tracepoints, that there's at most one | |
1362 | while-stepping element, and that the while-stepping's body | |
1363 | has valid tracing commands excluding nested while-stepping. | |
1364 | We also need to validate the tracepoint action line in the | |
1365 | context of the tracepoint --- validate_actionline actually | |
1366 | has side effects, like setting the tracepoint's | |
1367 | while-stepping STEP_COUNT, in addition to checking if the | |
1368 | collect/teval actions parse and make sense in the | |
1369 | tracepoint's context. */ | |
a7bdde9e VP |
1370 | for (c = commands; c; c = c->next) |
1371 | { | |
a7bdde9e VP |
1372 | if (c->control_type == while_stepping_control) |
1373 | { | |
1374 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1375 | error (_("The 'while-stepping' command " |
1376 | "cannot be used for fast tracepoint")); | |
7b572efb TT |
1377 | else if (b->type == bp_static_tracepoint |
1378 | || b->type == bp_static_marker_tracepoint) | |
3e43a32a MS |
1379 | error (_("The 'while-stepping' command " |
1380 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1381 | |
1382 | if (while_stepping) | |
3e43a32a MS |
1383 | error (_("The 'while-stepping' command " |
1384 | "can be used only once")); | |
a7bdde9e VP |
1385 | else |
1386 | while_stepping = c; | |
1387 | } | |
c9a6ce02 PA |
1388 | |
1389 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1390 | } |
1391 | if (while_stepping) | |
1392 | { | |
1393 | struct command_line *c2; | |
1394 | ||
12973681 TT |
1395 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1396 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1397 | for (; c2; c2 = c2->next) |
1398 | { | |
a7bdde9e VP |
1399 | if (c2->control_type == while_stepping_control) |
1400 | error (_("The 'while-stepping' command cannot be nested")); | |
1401 | } | |
1402 | } | |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | check_no_tracepoint_commands (commands); | |
1407 | } | |
95a42b64 TT |
1408 | } |
1409 | ||
0fb4aa4b PA |
1410 | /* Return a vector of all the static tracepoints set at ADDR. The |
1411 | caller is responsible for releasing the vector. */ | |
1412 | ||
f51e0e20 | 1413 | std::vector<breakpoint *> |
0fb4aa4b PA |
1414 | static_tracepoints_here (CORE_ADDR addr) |
1415 | { | |
f51e0e20 | 1416 | std::vector<breakpoint *> found; |
0fb4aa4b | 1417 | |
43892fdf | 1418 | for (breakpoint *b : all_breakpoints ()) |
7b572efb TT |
1419 | if (b->type == bp_static_tracepoint |
1420 | || b->type == bp_static_marker_tracepoint) | |
0fb4aa4b | 1421 | { |
40cb8ca5 | 1422 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1423 | if (loc->address == addr) |
f51e0e20 | 1424 | found.push_back (b); |
0fb4aa4b PA |
1425 | } |
1426 | ||
1427 | return found; | |
1428 | } | |
1429 | ||
95a42b64 | 1430 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1431 | validate that only allowed commands are included. */ |
95a42b64 TT |
1432 | |
1433 | void | |
4a64f543 | 1434 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1435 | counted_command_line &&commands) |
95a42b64 | 1436 | { |
93921405 | 1437 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1438 | |
d1b0a7bf | 1439 | b->commands = std::move (commands); |
76727919 | 1440 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1441 | } |
1442 | ||
45a43567 TT |
1443 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1444 | is not the same as the "silent" that may appear in the breakpoint's | |
1445 | commands. */ | |
1446 | ||
1447 | void | |
1448 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1449 | { | |
1450 | int old_silent = b->silent; | |
1451 | ||
1452 | b->silent = silent; | |
1453 | if (old_silent != silent) | |
76727919 | 1454 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1455 | } |
1456 | ||
0a9ccb9d | 1457 | /* See breakpoint.h. */ |
45a43567 TT |
1458 | |
1459 | void | |
1460 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1461 | { | |
0a9ccb9d AB |
1462 | /* It is invalid to set the thread field to anything other than -1 (which |
1463 | means no thread restriction) if a task restriction is already in | |
1464 | place. */ | |
2ecee236 | 1465 | gdb_assert (thread == -1 || b->task == -1); |
0a9ccb9d | 1466 | |
45a43567 TT |
1467 | int old_thread = b->thread; |
1468 | ||
1469 | b->thread = thread; | |
1470 | if (old_thread != thread) | |
76727919 | 1471 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1472 | } |
1473 | ||
0a9ccb9d | 1474 | /* See breakpoint.h. */ |
45a43567 TT |
1475 | |
1476 | void | |
1477 | breakpoint_set_task (struct breakpoint *b, int task) | |
1478 | { | |
2ecee236 | 1479 | /* It is invalid to set the task field to anything other than -1 (which |
0a9ccb9d AB |
1480 | means no task restriction) if a thread restriction is already in |
1481 | place. */ | |
2ecee236 | 1482 | gdb_assert (task == -1 || b->thread == -1); |
0a9ccb9d | 1483 | |
45a43567 TT |
1484 | int old_task = b->task; |
1485 | ||
1486 | b->task = task; | |
1487 | if (old_task != task) | |
76727919 | 1488 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1489 | } |
1490 | ||
95a42b64 | 1491 | static void |
896b6bda | 1492 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1493 | struct command_line *control) |
95a42b64 | 1494 | { |
d1b0a7bf | 1495 | counted_command_line cmd; |
999700cd PW |
1496 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1497 | NULL after the call to read_command_lines if the user provides an empty | |
1498 | list of command by just typing "end". */ | |
1499 | bool cmd_read = false; | |
95a42b64 | 1500 | |
896b6bda PA |
1501 | std::string new_arg; |
1502 | ||
95a42b64 TT |
1503 | if (arg == NULL || !*arg) |
1504 | { | |
da1df1db | 1505 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1506 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1507 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1508 | breakpoint_count); | |
95a42b64 | 1509 | else if (breakpoint_count > 0) |
896b6bda | 1510 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1511 | } |
da1df1db TBA |
1512 | else |
1513 | { | |
1514 | /* Create a copy of ARG. This is needed because the "commands" | |
1515 | command may be coming from a script. In that case, the read | |
1516 | line buffer is going to be overwritten in the lambda of | |
1517 | 'map_breakpoint_numbers' below when reading the next line | |
1518 | before we are are done parsing the breakpoint numbers. */ | |
1519 | new_arg = arg; | |
1520 | } | |
1521 | arg = new_arg.c_str (); | |
48649e1b TT |
1522 | |
1523 | map_breakpoint_numbers | |
1524 | (arg, [&] (breakpoint *b) | |
1525 | { | |
999700cd | 1526 | if (!cmd_read) |
48649e1b | 1527 | { |
999700cd | 1528 | gdb_assert (cmd == NULL); |
48649e1b | 1529 | if (control != NULL) |
12973681 | 1530 | cmd = control->body_list_0; |
48649e1b TT |
1531 | else |
1532 | { | |
81b1e71c TT |
1533 | std::string str |
1534 | = string_printf (_("Type commands for breakpoint(s) " | |
1535 | "%s, one per line."), | |
1536 | arg); | |
48649e1b | 1537 | |
60b3cef2 TT |
1538 | auto do_validate = [=] (const char *line) |
1539 | { | |
1540 | validate_actionline (line, b); | |
1541 | }; | |
1542 | gdb::function_view<void (const char *)> validator; | |
1543 | if (is_tracepoint (b)) | |
1544 | validator = do_validate; | |
1545 | ||
1546 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1547 | } |
999700cd | 1548 | cmd_read = true; |
48649e1b TT |
1549 | } |
1550 | ||
1551 | /* If a breakpoint was on the list more than once, we don't need to | |
1552 | do anything. */ | |
1553 | if (b->commands != cmd) | |
1554 | { | |
d1b0a7bf | 1555 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1556 | b->commands = cmd; |
76727919 | 1557 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1558 | } |
1559 | }); | |
95a42b64 TT |
1560 | } |
1561 | ||
1562 | static void | |
0b39b52e | 1563 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1564 | { |
1565 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1566 | } |
40c03ae8 EZ |
1567 | |
1568 | /* Like commands_command, but instead of reading the commands from | |
1569 | input stream, takes them from an already parsed command structure. | |
1570 | ||
1571 | This is used by cli-script.c to DTRT with breakpoint commands | |
1572 | that are part of if and while bodies. */ | |
1573 | enum command_control_type | |
896b6bda | 1574 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1575 | { |
95a42b64 TT |
1576 | commands_command_1 (arg, 0, cmd); |
1577 | return simple_control; | |
40c03ae8 | 1578 | } |
876fa593 | 1579 | |
d8de7963 | 1580 | /* Return true if BL->TARGET_INFO contains valid information. */ |
876fa593 | 1581 | |
d8de7963 | 1582 | static bool |
876fa593 JK |
1583 | bp_location_has_shadow (struct bp_location *bl) |
1584 | { | |
1585 | if (bl->loc_type != bp_loc_software_breakpoint) | |
d8de7963 | 1586 | return false; |
876fa593 | 1587 | if (!bl->inserted) |
d8de7963 | 1588 | return false; |
876fa593 | 1589 | if (bl->target_info.shadow_len == 0) |
e5dd4106 | 1590 | /* BL isn't valid, or doesn't shadow memory. */ |
d8de7963 AB |
1591 | return false; |
1592 | return true; | |
876fa593 JK |
1593 | } |
1594 | ||
9d497a19 PA |
1595 | /* Update BUF, which is LEN bytes read from the target address |
1596 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1597 | contents. | |
1598 | ||
1599 | If READBUF is not NULL, this buffer must not overlap with the of | |
1600 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1601 | failed assertion internal error will be raised. */ | |
1602 | ||
1603 | static void | |
1604 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1605 | const gdb_byte *writebuf_org, | |
1606 | ULONGEST memaddr, LONGEST len, | |
1607 | struct bp_target_info *target_info, | |
1608 | struct gdbarch *gdbarch) | |
1609 | { | |
1610 | /* Now do full processing of the found relevant range of elements. */ | |
1611 | CORE_ADDR bp_addr = 0; | |
1612 | int bp_size = 0; | |
1613 | int bptoffset = 0; | |
1614 | ||
1615 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1616 | current_program_space->aspace, 0)) | |
1617 | { | |
1618 | /* The breakpoint is inserted in a different address space. */ | |
1619 | return; | |
1620 | } | |
1621 | ||
1622 | /* Addresses and length of the part of the breakpoint that | |
1623 | we need to copy. */ | |
1624 | bp_addr = target_info->placed_address; | |
1625 | bp_size = target_info->shadow_len; | |
1626 | ||
1627 | if (bp_addr + bp_size <= memaddr) | |
1628 | { | |
1629 | /* The breakpoint is entirely before the chunk of memory we are | |
1630 | reading. */ | |
1631 | return; | |
1632 | } | |
1633 | ||
1634 | if (bp_addr >= memaddr + len) | |
1635 | { | |
1636 | /* The breakpoint is entirely after the chunk of memory we are | |
1637 | reading. */ | |
1638 | return; | |
1639 | } | |
1640 | ||
1641 | /* Offset within shadow_contents. */ | |
1642 | if (bp_addr < memaddr) | |
1643 | { | |
1644 | /* Only copy the second part of the breakpoint. */ | |
1645 | bp_size -= memaddr - bp_addr; | |
1646 | bptoffset = memaddr - bp_addr; | |
1647 | bp_addr = memaddr; | |
1648 | } | |
1649 | ||
1650 | if (bp_addr + bp_size > memaddr + len) | |
1651 | { | |
1652 | /* Only copy the first part of the breakpoint. */ | |
1653 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1654 | } | |
1655 | ||
1656 | if (readbuf != NULL) | |
1657 | { | |
1658 | /* Verify that the readbuf buffer does not overlap with the | |
1659 | shadow_contents buffer. */ | |
1660 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1661 | || readbuf >= (target_info->shadow_contents | |
1662 | + target_info->shadow_len)); | |
1663 | ||
1664 | /* Update the read buffer with this inserted breakpoint's | |
1665 | shadow. */ | |
1666 | memcpy (readbuf + bp_addr - memaddr, | |
1667 | target_info->shadow_contents + bptoffset, bp_size); | |
1668 | } | |
1669 | else | |
1670 | { | |
1671 | const unsigned char *bp; | |
0d5ed153 MR |
1672 | CORE_ADDR addr = target_info->reqstd_address; |
1673 | int placed_size; | |
9d497a19 PA |
1674 | |
1675 | /* Update the shadow with what we want to write to memory. */ | |
1676 | memcpy (target_info->shadow_contents + bptoffset, | |
1677 | writebuf_org + bp_addr - memaddr, bp_size); | |
1678 | ||
1679 | /* Determine appropriate breakpoint contents and size for this | |
1680 | address. */ | |
0d5ed153 | 1681 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1682 | |
1683 | /* Update the final write buffer with this inserted | |
1684 | breakpoint's INSN. */ | |
1685 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1686 | } | |
1687 | } | |
1688 | ||
8defab1a | 1689 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1690 | by replacing any memory breakpoints with their shadowed contents. |
1691 | ||
35c63cd8 JB |
1692 | If READBUF is not NULL, this buffer must not overlap with any of |
1693 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1694 | a failed assertion internal error will be raised. | |
1695 | ||
876fa593 | 1696 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1697 | bl->address - bp_locations_placed_address_before_address_max |
1698 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1699 | The range we were requested to resolve shadows for is: |
1700 | memaddr ... memaddr + len | |
1701 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1702 | memaddr + len <= (bl->address |
f5336ca5 | 1703 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1704 | and: |
f5336ca5 | 1705 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1706 | |
8defab1a | 1707 | void |
f0ba3972 PA |
1708 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1709 | const gdb_byte *writebuf_org, | |
1710 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1711 | { |
4a64f543 MS |
1712 | /* Left boundary, right boundary and median element of our binary |
1713 | search. */ | |
876fa593 JK |
1714 | unsigned bc_l, bc_r, bc; |
1715 | ||
4a64f543 MS |
1716 | /* Find BC_L which is a leftmost element which may affect BUF |
1717 | content. It is safe to report lower value but a failure to | |
1718 | report higher one. */ | |
876fa593 JK |
1719 | |
1720 | bc_l = 0; | |
5d51cd5d | 1721 | bc_r = bp_locations.size (); |
876fa593 JK |
1722 | while (bc_l + 1 < bc_r) |
1723 | { | |
35df4500 | 1724 | struct bp_location *bl; |
876fa593 JK |
1725 | |
1726 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1727 | bl = bp_locations[bc]; |
876fa593 | 1728 | |
4a64f543 MS |
1729 | /* Check first BL->ADDRESS will not overflow due to the added |
1730 | constant. Then advance the left boundary only if we are sure | |
1731 | the BC element can in no way affect the BUF content (MEMADDR | |
1732 | to MEMADDR + LEN range). | |
876fa593 | 1733 | |
f5336ca5 | 1734 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1735 | offset so that we cannot miss a breakpoint with its shadow |
1736 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1737 | |
f5336ca5 | 1738 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1739 | >= bl->address) |
f5336ca5 | 1740 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1741 | <= memaddr)) |
876fa593 JK |
1742 | bc_l = bc; |
1743 | else | |
1744 | bc_r = bc; | |
1745 | } | |
1746 | ||
128070bb PA |
1747 | /* Due to the binary search above, we need to make sure we pick the |
1748 | first location that's at BC_L's address. E.g., if there are | |
1749 | multiple locations at the same address, BC_L may end up pointing | |
1750 | at a duplicate location, and miss the "master"/"inserted" | |
1751 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1752 | B: | |
1753 | ||
1754 | L1@A, L2@A, L3@B, ... | |
1755 | ||
1756 | BC_L could end up pointing at location L2, while the "master" | |
1757 | location could be L1. Since the `loc->inserted' flag is only set | |
1758 | on "master" locations, we'd forget to restore the shadow of L1 | |
1759 | and L2. */ | |
1760 | while (bc_l > 0 | |
f5336ca5 | 1761 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1762 | bc_l--; |
1763 | ||
876fa593 JK |
1764 | /* Now do full processing of the found relevant range of elements. */ |
1765 | ||
5d51cd5d | 1766 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1767 | { |
1768 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1769 | |
01add95b SM |
1770 | /* bp_location array has BL->OWNER always non-NULL. */ |
1771 | if (bl->owner->type == bp_none) | |
1772 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1773 | bl->owner->number); | |
ffce0d52 | 1774 | |
01add95b SM |
1775 | /* Performance optimization: any further element can no longer affect BUF |
1776 | content. */ | |
876fa593 | 1777 | |
01add95b SM |
1778 | if (bl->address >= bp_locations_placed_address_before_address_max |
1779 | && (memaddr + len | |
1780 | <= (bl->address | |
1781 | - bp_locations_placed_address_before_address_max))) | |
1782 | break; | |
876fa593 | 1783 | |
01add95b SM |
1784 | if (!bp_location_has_shadow (bl)) |
1785 | continue; | |
6c95b8df | 1786 | |
01add95b SM |
1787 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1788 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1789 | } | |
c906108c | 1790 | } |
9d497a19 | 1791 | |
f2478a7e | 1792 | /* See breakpoint.h. */ |
b775012e | 1793 | |
f2478a7e | 1794 | bool |
b775012e LM |
1795 | is_breakpoint (const struct breakpoint *bpt) |
1796 | { | |
1797 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1798 | || bpt->type == bp_hardware_breakpoint |
1799 | || bpt->type == bp_dprintf); | |
b775012e LM |
1800 | } |
1801 | ||
60e1c644 PA |
1802 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1803 | ||
f2478a7e | 1804 | static bool |
d77f58be | 1805 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1806 | { |
1807 | return (bpt->type == bp_hardware_watchpoint | |
1808 | || bpt->type == bp_read_watchpoint | |
1809 | || bpt->type == bp_access_watchpoint); | |
1810 | } | |
7270d8f2 | 1811 | |
f2478a7e | 1812 | /* See breakpoint.h. */ |
60e1c644 | 1813 | |
f2478a7e | 1814 | bool |
d77f58be | 1815 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1816 | { |
1817 | return (is_hardware_watchpoint (bpt) | |
1818 | || bpt->type == bp_watchpoint); | |
1819 | } | |
1820 | ||
3a5c3e22 PA |
1821 | /* Returns true if the current thread and its running state are safe |
1822 | to evaluate or update watchpoint B. Watchpoints on local | |
1823 | expressions need to be evaluated in the context of the thread that | |
1824 | was current when the watchpoint was created, and, that thread needs | |
1825 | to be stopped to be able to select the correct frame context. | |
1826 | Watchpoints on global expressions can be evaluated on any thread, | |
1827 | and in any state. It is presently left to the target allowing | |
1828 | memory accesses when threads are running. */ | |
f6bc2008 | 1829 | |
d8de7963 | 1830 | static bool |
3a5c3e22 | 1831 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1832 | { |
c1fc2657 | 1833 | return (b->pspace == current_program_space |
d7e15655 TT |
1834 | && (b->watchpoint_thread == null_ptid |
1835 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1836 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1837 | } |
1838 | ||
d0fb5eae JK |
1839 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1840 | associated bp_watchpoint_scope breakpoint. */ | |
1841 | ||
1842 | static void | |
3a5c3e22 | 1843 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1844 | { |
c1fc2657 | 1845 | if (w->related_breakpoint != w) |
d0fb5eae | 1846 | { |
c1fc2657 SM |
1847 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1848 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1849 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1850 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1851 | w->related_breakpoint = w; | |
d0fb5eae | 1852 | } |
c1fc2657 | 1853 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1854 | } |
1855 | ||
bb9d5f81 PP |
1856 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1857 | watchpoint W. */ | |
1858 | ||
1859 | static struct value * | |
1860 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1861 | { | |
1862 | struct value *bit_val; | |
1863 | ||
1864 | if (val == NULL) | |
1865 | return NULL; | |
1866 | ||
317c3ed9 | 1867 | bit_val = value::allocate (val->type ()); |
bb9d5f81 | 1868 | |
6c49729e TT |
1869 | val->unpack_bitfield (bit_val, |
1870 | w->val_bitpos, | |
1871 | w->val_bitsize, | |
1872 | val->contents_for_printing ().data (), | |
1873 | val->offset ()); | |
bb9d5f81 PP |
1874 | |
1875 | return bit_val; | |
1876 | } | |
1877 | ||
6e14e441 PA |
1878 | /* Allocate a dummy location and add it to B. This is required |
1879 | because bpstat_stop_status requires a location to be able to report | |
1880 | stops. */ | |
c6d81124 PA |
1881 | |
1882 | static void | |
6e14e441 PA |
1883 | add_dummy_location (struct breakpoint *b, |
1884 | struct program_space *pspace) | |
c6d81124 | 1885 | { |
6e14e441 | 1886 | gdb_assert (b->loc == NULL); |
c6d81124 | 1887 | |
6e14e441 | 1888 | b->loc = new bp_location (b, bp_loc_other); |
c6d81124 | 1889 | b->loc->pspace = pspace; |
c6d81124 PA |
1890 | } |
1891 | ||
567e1b4e | 1892 | /* Assuming that B is a watchpoint: |
d8de7963 | 1893 | - Reparse watchpoint expression, if REPARSE is true |
a5606eee | 1894 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1895 | - Evaluate the condition if there is one, and store the result |
1896 | in b->loc->cond. | |
a5606eee VP |
1897 | - Update the list of values that must be watched in B->loc. |
1898 | ||
4a64f543 MS |
1899 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1900 | nothing. If this is local watchpoint that is out of scope, delete | |
1901 | it. | |
1902 | ||
1903 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1904 | removed + inserted on each stop here. Normal breakpoints must | |
1905 | never be removed because they might be missed by a running thread | |
1906 | when debugging in non-stop mode. On the other hand, hardware | |
1907 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1908 | to each LWP since they are stored in each LWP's hardware debug | |
1909 | registers. Therefore, such LWP must be stopped first in order to | |
1910 | be able to modify its hardware watchpoints. | |
1911 | ||
1912 | Hardware watchpoints must be reset exactly once after being | |
1913 | presented to the user. It cannot be done sooner, because it would | |
1914 | reset the data used to present the watchpoint hit to the user. And | |
1915 | it must not be done later because it could display the same single | |
1916 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1917 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1918 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1919 | not user-visible - its hit is suppressed if the memory content has | |
1920 | not changed. | |
1921 | ||
1922 | The following constraints influence the location where we can reset | |
1923 | hardware watchpoints: | |
1924 | ||
1925 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1926 | called several times when GDB stops. | |
1927 | ||
1928 | [linux] | |
1929 | * Multiple hardware watchpoints can be hit at the same time, | |
1930 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1931 | hit at a time as the reason for stopping, and all the other hits | |
1932 | are presented later, one after the other, each time the user | |
1933 | requests the execution to be resumed. Execution is not resumed | |
1934 | for the threads still having pending hit event stored in | |
1935 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1936 | the inferior on the first stop the thread hit event is kept being | |
1937 | reported from its cached value by linux_nat_stopped_data_address | |
1938 | until the real thread resume happens after the watchpoint gets | |
1939 | presented and thus its LWP_INFO->STATUS gets reset. | |
1940 | ||
1941 | Therefore the hardware watchpoint hit can get safely reset on the | |
1942 | watchpoint removal from inferior. */ | |
a79d3c27 | 1943 | |
b40ce68a | 1944 | static void |
d8de7963 | 1945 | update_watchpoint (struct watchpoint *b, bool reparse) |
7270d8f2 | 1946 | { |
705b6305 | 1947 | bool within_current_scope; |
a5606eee | 1948 | |
f6bc2008 PA |
1949 | /* If this is a local watchpoint, we only want to check if the |
1950 | watchpoint frame is in scope if the current thread is the thread | |
1951 | that was used to create the watchpoint. */ | |
1952 | if (!watchpoint_in_thread_scope (b)) | |
1953 | return; | |
1954 | ||
c1fc2657 | 1955 | if (b->disposition == disp_del_at_next_stop) |
a5606eee | 1956 | return; |
705b6305 AB |
1957 | |
1958 | gdb::optional<scoped_restore_selected_frame> restore_frame; | |
a5606eee VP |
1959 | |
1960 | /* Determine if the watchpoint is within scope. */ | |
1961 | if (b->exp_valid_block == NULL) | |
705b6305 | 1962 | within_current_scope = true; |
a5606eee VP |
1963 | else |
1964 | { | |
bd2b40ac | 1965 | frame_info_ptr fi = get_current_frame (); |
b5db5dfc UW |
1966 | struct gdbarch *frame_arch = get_frame_arch (fi); |
1967 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1968 | ||
c9cf6e20 MG |
1969 | /* If we're at a point where the stack has been destroyed |
1970 | (e.g. in a function epilogue), unwinding may not work | |
1971 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1972 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1973 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1974 | return; |
66076460 DJ |
1975 | |
1976 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1977 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1978 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1979 | took a frame parameter, so that we didn't have to change the |
1980 | selected frame. */ | |
705b6305 | 1981 | restore_frame.emplace (); |
66076460 | 1982 | |
a5606eee VP |
1983 | fi = frame_find_by_id (b->watchpoint_frame); |
1984 | within_current_scope = (fi != NULL); | |
1985 | if (within_current_scope) | |
1986 | select_frame (fi); | |
1987 | } | |
1988 | ||
b5db5dfc UW |
1989 | /* We don't free locations. They are stored in the bp_location array |
1990 | and update_global_location_list will eventually delete them and | |
1991 | remove breakpoints if needed. */ | |
c1fc2657 | 1992 | b->loc = NULL; |
b5db5dfc | 1993 | |
a5606eee VP |
1994 | if (within_current_scope && reparse) |
1995 | { | |
bbc13ae3 | 1996 | const char *s; |
d63d0675 | 1997 | |
4d01a485 | 1998 | b->exp.reset (); |
a4c50be3 TT |
1999 | s = (b->exp_string_reparse |
2000 | ? b->exp_string_reparse.get () | |
2001 | : b->exp_string.get ()); | |
1bb9788d | 2002 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
2003 | /* If the meaning of expression itself changed, the old value is |
2004 | no longer relevant. We don't want to report a watchpoint hit | |
2005 | to the user when the old value and the new value may actually | |
2006 | be completely different objects. */ | |
fa4727a6 | 2007 | b->val = NULL; |
4c1d86d9 | 2008 | b->val_valid = false; |
60e1c644 PA |
2009 | |
2010 | /* Note that unlike with breakpoints, the watchpoint's condition | |
2011 | expression is stored in the breakpoint object, not in the | |
2012 | locations (re)created below. */ | |
c1fc2657 | 2013 | if (b->cond_string != NULL) |
60e1c644 | 2014 | { |
4d01a485 | 2015 | b->cond_exp.reset (); |
60e1c644 | 2016 | |
6f781ee3 | 2017 | s = b->cond_string.get (); |
1bb9788d | 2018 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 2019 | } |
a5606eee | 2020 | } |
a5606eee VP |
2021 | |
2022 | /* If we failed to parse the expression, for example because | |
2023 | it refers to a global variable in a not-yet-loaded shared library, | |
2024 | don't try to insert watchpoint. We don't automatically delete | |
2025 | such watchpoint, though, since failure to parse expression | |
2026 | is different from out-of-scope watchpoint. */ | |
55f6301a | 2027 | if (!target_has_execution ()) |
2d134ed3 PA |
2028 | { |
2029 | /* Without execution, memory can't change. No use to try and | |
2030 | set watchpoint locations. The watchpoint will be reset when | |
2031 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
2032 | if (!can_use_hw_watchpoints) |
2033 | { | |
c47614fe | 2034 | if (b->works_in_software_mode ()) |
c1fc2657 | 2035 | b->type = bp_watchpoint; |
e8369a73 | 2036 | else |
638aa5a1 AB |
2037 | error (_("Can't set read/access watchpoint when " |
2038 | "hardware watchpoints are disabled.")); | |
e8369a73 | 2039 | } |
2d134ed3 PA |
2040 | } |
2041 | else if (within_current_scope && b->exp) | |
a5606eee | 2042 | { |
a6535de1 | 2043 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 2044 | struct value *v, *result; |
2d134ed3 | 2045 | struct program_space *frame_pspace; |
a5606eee | 2046 | |
1eaebe02 | 2047 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 2048 | &val_chain, false); |
a5606eee | 2049 | |
a5606eee VP |
2050 | /* Avoid setting b->val if it's already set. The meaning of |
2051 | b->val is 'the last value' user saw, and we should update | |
2052 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
2053 | happens, the code that reports it updates b->val directly. |
2054 | We don't keep track of the memory value for masked | |
2055 | watchpoints. */ | |
c1fc2657 | 2056 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 2057 | { |
bb9d5f81 | 2058 | if (b->val_bitsize != 0) |
850645cf TT |
2059 | v = extract_bitfield_from_watchpoint_value (b, v); |
2060 | b->val = release_value (v); | |
4c1d86d9 | 2061 | b->val_valid = true; |
fa4727a6 | 2062 | } |
a5606eee | 2063 | |
2d134ed3 PA |
2064 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
2065 | ||
a5606eee | 2066 | /* Look at each value on the value chain. */ |
a6535de1 TT |
2067 | gdb_assert (!val_chain.empty ()); |
2068 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 2069 | { |
a6535de1 TT |
2070 | v = iter.get (); |
2071 | ||
a5606eee VP |
2072 | /* If it's a memory location, and GDB actually needed |
2073 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
2074 | must watch it. If the first value returned is |
2075 | still lazy, that means an error occurred reading it; | |
2076 | watch it anyway in case it becomes readable. */ | |
736355f2 | 2077 | if (v->lval () == lval_memory |
3ee3b270 | 2078 | && (v == val_chain[0] || ! v->lazy ())) |
a5606eee | 2079 | { |
d0c97917 | 2080 | struct type *vtype = check_typedef (v->type ()); |
7270d8f2 | 2081 | |
a5606eee VP |
2082 | /* We only watch structs and arrays if user asked |
2083 | for it explicitly, never if they just happen to | |
2084 | appear in the middle of some value chain. */ | |
fa4727a6 | 2085 | if (v == result |
78134374 SM |
2086 | || (vtype->code () != TYPE_CODE_STRUCT |
2087 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
2088 | { |
2089 | CORE_ADDR addr; | |
f486487f | 2090 | enum target_hw_bp_type type; |
a5606eee | 2091 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
2092 | int bitpos = 0, bitsize = 0; |
2093 | ||
f49d5fa2 | 2094 | if (v->bitsize () != 0) |
bb9d5f81 PP |
2095 | { |
2096 | /* Extract the bit parameters out from the bitfield | |
2097 | sub-expression. */ | |
5011c493 | 2098 | bitpos = v->bitpos (); |
f49d5fa2 | 2099 | bitsize = v->bitsize (); |
bb9d5f81 PP |
2100 | } |
2101 | else if (v == result && b->val_bitsize != 0) | |
2102 | { | |
2103 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2104 | lvalue whose bit parameters are saved in the fields | |
2105 | VAL_BITPOS and VAL_BITSIZE. */ | |
2106 | bitpos = b->val_bitpos; | |
2107 | bitsize = b->val_bitsize; | |
2108 | } | |
a5606eee | 2109 | |
9feb2d07 | 2110 | addr = v->address (); |
bb9d5f81 PP |
2111 | if (bitsize != 0) |
2112 | { | |
2113 | /* Skip the bytes that don't contain the bitfield. */ | |
2114 | addr += bitpos / 8; | |
2115 | } | |
2116 | ||
a5606eee | 2117 | type = hw_write; |
c1fc2657 | 2118 | if (b->type == bp_read_watchpoint) |
a5606eee | 2119 | type = hw_read; |
c1fc2657 | 2120 | else if (b->type == bp_access_watchpoint) |
a5606eee | 2121 | type = hw_access; |
3a5c3e22 | 2122 | |
ee89d0a4 | 2123 | loc = b->allocate_location (); |
c1fc2657 | 2124 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
a5606eee VP |
2125 | ; |
2126 | *tmp = loc; | |
d0c97917 | 2127 | loc->gdbarch = v->type ()->arch (); |
6c95b8df PA |
2128 | |
2129 | loc->pspace = frame_pspace; | |
d88cb738 LM |
2130 | loc->address |
2131 | = gdbarch_remove_non_address_bits (loc->gdbarch, addr); | |
bb9d5f81 PP |
2132 | |
2133 | if (bitsize != 0) | |
2134 | { | |
2135 | /* Just cover the bytes that make up the bitfield. */ | |
2136 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2137 | } | |
2138 | else | |
d0c97917 | 2139 | loc->length = v->type ()->length (); |
bb9d5f81 | 2140 | |
a5606eee VP |
2141 | loc->watchpoint_type = type; |
2142 | } | |
2143 | } | |
9fa40276 TJB |
2144 | } |
2145 | ||
2146 | /* Change the type of breakpoint between hardware assisted or | |
bc45f536 CL |
2147 | an ordinary watchpoint depending on the hardware support and |
2148 | free hardware slots. Recheck the number of free hardware slots | |
2149 | as the value chain may have changed. */ | |
9fa40276 | 2150 | { |
e09342b5 | 2151 | int reg_cnt; |
9fa40276 | 2152 | enum bp_loc_type loc_type; |
a5606eee | 2153 | |
a9634178 | 2154 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2155 | |
2156 | if (reg_cnt) | |
9fa40276 TJB |
2157 | { |
2158 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2159 | enum bptype type; |
9fa40276 | 2160 | |
a9634178 TJB |
2161 | /* Use an exact watchpoint when there's only one memory region to be |
2162 | watched, and only one debug register is needed to watch it. */ | |
2163 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2164 | ||
9fa40276 | 2165 | /* We need to determine how many resources are already |
e09342b5 TJB |
2166 | used for all other hardware watchpoints plus this one |
2167 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2168 | this watchpoint in as well. */ |
2169 | ||
2170 | /* If this is a software watchpoint, we try to turn it | |
2171 | to a hardware one -- count resources as if B was of | |
2172 | hardware watchpoint type. */ | |
c1fc2657 | 2173 | type = b->type; |
a1398e0c PA |
2174 | if (type == bp_watchpoint) |
2175 | type = bp_hardware_watchpoint; | |
2176 | ||
2177 | /* This watchpoint may or may not have been placed on | |
2178 | the list yet at this point (it won't be in the list | |
2179 | if we're trying to create it for the first time, | |
2180 | through watch_command), so always account for it | |
2181 | manually. */ | |
2182 | ||
2183 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2184 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2185 | |
2186 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2187 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2188 | |
2189 | target_resources_ok | |
2190 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2191 | if (target_resources_ok <= 0) |
a9634178 | 2192 | { |
5a61e176 | 2193 | bool sw_mode = b->works_in_software_mode (); |
9c06b0b4 TJB |
2194 | |
2195 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2196 | error (_("Target does not support this type of " |
2197 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2198 | else if (target_resources_ok < 0 && !sw_mode) |
2199 | error (_("There are not enough available hardware " | |
2200 | "resources for this watchpoint.")); | |
a1398e0c PA |
2201 | |
2202 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2203 | b->type = bp_watchpoint; |
a1398e0c PA |
2204 | } |
2205 | else | |
2206 | { | |
2207 | /* If this was a software watchpoint, we've just | |
2208 | found we have enough resources to turn it to a | |
2209 | hardware watchpoint. Otherwise, this is a | |
2210 | nop. */ | |
c1fc2657 | 2211 | b->type = type; |
a9634178 | 2212 | } |
9fa40276 | 2213 | } |
c47614fe | 2214 | else if (!b->works_in_software_mode ()) |
638aa5a1 AB |
2215 | { |
2216 | if (!can_use_hw_watchpoints) | |
2217 | error (_("Can't set read/access watchpoint when " | |
2218 | "hardware watchpoints are disabled.")); | |
2219 | else | |
2220 | error (_("Expression cannot be implemented with " | |
2221 | "read/access watchpoint.")); | |
2222 | } | |
9fa40276 | 2223 | else |
c1fc2657 | 2224 | b->type = bp_watchpoint; |
9fa40276 | 2225 | |
6e14e441 | 2226 | loc_type = (b->type == bp_watchpoint? bp_loc_software_watchpoint |
9fa40276 | 2227 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2228 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2229 | bl->loc_type = loc_type; |
2230 | } | |
2231 | ||
c7437ca6 PA |
2232 | /* If a software watchpoint is not watching any memory, then the |
2233 | above left it without any location set up. But, | |
2234 | bpstat_stop_status requires a location to be able to report | |
2235 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 | 2236 | if (b->type == bp_watchpoint && b->loc == NULL) |
6e14e441 | 2237 | add_dummy_location (b, frame_pspace); |
a5606eee VP |
2238 | } |
2239 | else if (!within_current_scope) | |
7270d8f2 | 2240 | { |
6cb06a8c | 2241 | gdb_printf (_("\ |
ac74f770 MS |
2242 | Watchpoint %d deleted because the program has left the block\n\ |
2243 | in which its expression is valid.\n"), | |
6cb06a8c | 2244 | b->number); |
d0fb5eae | 2245 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2246 | } |
7270d8f2 OF |
2247 | } |
2248 | ||
d8de7963 | 2249 | /* Returns true iff breakpoint location should be |
1e4d1764 YQ |
2250 | inserted in the inferior. We don't differentiate the type of BL's owner |
2251 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2252 | breakpoint_ops is not defined, because in insert_bp_location, | |
2253 | tracepoint's insert_location will not be called. */ | |
d8de7963 AB |
2254 | |
2255 | static bool | |
35df4500 | 2256 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2257 | { |
35df4500 | 2258 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
d8de7963 | 2259 | return false; |
74960c60 | 2260 | |
35df4500 | 2261 | if (bl->owner->disposition == disp_del_at_next_stop) |
d8de7963 | 2262 | return false; |
74960c60 | 2263 | |
b5fa468f TBA |
2264 | if (!bl->enabled || bl->disabled_by_cond |
2265 | || bl->shlib_disabled || bl->duplicate) | |
d8de7963 | 2266 | return false; |
74960c60 | 2267 | |
f8eba3c6 | 2268 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
d8de7963 | 2269 | return false; |
f8eba3c6 | 2270 | |
56710373 PA |
2271 | /* This is set for example, when we're attached to the parent of a |
2272 | vfork, and have detached from the child. The child is running | |
2273 | free, and we expect it to do an exec or exit, at which point the | |
2274 | OS makes the parent schedulable again (and the target reports | |
2275 | that the vfork is done). Until the child is done with the shared | |
2276 | memory region, do not insert breakpoints in the parent, otherwise | |
2277 | the child could still trip on the parent's breakpoints. Since | |
2278 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2279 | if (bl->pspace->breakpoints_not_allowed) |
d8de7963 | 2280 | return false; |
56710373 | 2281 | |
31e77af2 | 2282 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2283 | location, except if the breakpoint is a single-step breakpoint, |
2284 | and the breakpoint's thread is the thread which is stepping past | |
2285 | a breakpoint. */ | |
31e77af2 PA |
2286 | if ((bl->loc_type == bp_loc_software_breakpoint |
2287 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2288 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2289 | bl->address) |
2290 | /* The single-step breakpoint may be inserted at the location | |
2291 | we're trying to step if the instruction branches to itself. | |
2292 | However, the instruction won't be executed at all and it may | |
2293 | break the semantics of the instruction, for example, the | |
2294 | instruction is a conditional branch or updates some flags. | |
2295 | We can't fix it unless GDB is able to emulate the instruction | |
2296 | or switch to displaced stepping. */ | |
2297 | && !(bl->owner->type == bp_single_step | |
2298 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2299 | { |
1eb8556f SM |
2300 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2301 | paddress (bl->gdbarch, bl->address)); | |
d8de7963 | 2302 | return false; |
e558d7c1 | 2303 | } |
31e77af2 | 2304 | |
963f9c80 PA |
2305 | /* Don't insert watchpoints if we're trying to step past the |
2306 | instruction that triggered one. */ | |
2307 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2308 | && stepping_past_nonsteppable_watchpoint ()) | |
2309 | { | |
1eb8556f | 2310 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2311 | "skipping watchpoint at %s:%d", |
1eb8556f | 2312 | paddress (bl->gdbarch, bl->address), bl->length); |
d8de7963 | 2313 | return false; |
963f9c80 PA |
2314 | } |
2315 | ||
d8de7963 | 2316 | return true; |
74960c60 VP |
2317 | } |
2318 | ||
934709f0 PW |
2319 | /* Same as should_be_inserted but does the check assuming |
2320 | that the location is not duplicated. */ | |
2321 | ||
aaa141a0 | 2322 | static bool |
934709f0 PW |
2323 | unduplicated_should_be_inserted (struct bp_location *bl) |
2324 | { | |
aaa141a0 AB |
2325 | scoped_restore restore_bl_duplicate |
2326 | = make_scoped_restore (&bl->duplicate, 0); | |
934709f0 | 2327 | |
aaa141a0 | 2328 | return should_be_inserted (bl); |
934709f0 PW |
2329 | } |
2330 | ||
b775012e LM |
2331 | /* Parses a conditional described by an expression COND into an |
2332 | agent expression bytecode suitable for evaluation | |
2333 | by the bytecode interpreter. Return NULL if there was | |
2334 | any error during parsing. */ | |
2335 | ||
833177a4 | 2336 | static agent_expr_up |
b775012e LM |
2337 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2338 | { | |
833177a4 | 2339 | if (cond == NULL) |
b775012e LM |
2340 | return NULL; |
2341 | ||
833177a4 PA |
2342 | agent_expr_up aexpr; |
2343 | ||
b775012e LM |
2344 | /* We don't want to stop processing, so catch any errors |
2345 | that may show up. */ | |
a70b8144 | 2346 | try |
b775012e | 2347 | { |
036e657b | 2348 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2349 | } |
2350 | ||
230d2906 | 2351 | catch (const gdb_exception_error &ex) |
b775012e LM |
2352 | { |
2353 | /* If we got here, it means the condition could not be parsed to a valid | |
2354 | bytecode expression and thus can't be evaluated on the target's side. | |
2355 | It's no use iterating through the conditions. */ | |
b775012e LM |
2356 | } |
2357 | ||
2358 | /* We have a valid agent expression. */ | |
2359 | return aexpr; | |
2360 | } | |
2361 | ||
2362 | /* Based on location BL, create a list of breakpoint conditions to be | |
2363 | passed on to the target. If we have duplicated locations with different | |
2364 | conditions, we will add such conditions to the list. The idea is that the | |
2365 | target will evaluate the list of conditions and will only notify GDB when | |
2366 | one of them is true. */ | |
2367 | ||
2368 | static void | |
2369 | build_target_condition_list (struct bp_location *bl) | |
2370 | { | |
d8de7963 | 2371 | bool null_condition_or_parse_error = false; |
b775012e | 2372 | int modified = bl->needs_update; |
b775012e | 2373 | |
8b4f3082 | 2374 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2375 | bl->target_info.conditions.clear (); |
8b4f3082 | 2376 | |
b775012e LM |
2377 | /* This is only meaningful if the target is |
2378 | evaluating conditions and if the user has | |
2379 | opted for condition evaluation on the target's | |
2380 | side. */ | |
2381 | if (gdb_evaluates_breakpoint_condition_p () | |
2382 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2383 | return; | |
2384 | ||
e0d9a270 SM |
2385 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2386 | ||
b775012e | 2387 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2388 | conditions or conditions that fail to parse to a valid agent |
2389 | expression bytecode. If any of these happen, then it's no use to | |
2390 | send conditions to the target since this location will always | |
2391 | trigger and generate a response back to GDB. Note we consider | |
2392 | all locations at the same address irrespective of type, i.e., | |
2393 | even if the locations aren't considered duplicates (e.g., | |
2394 | software breakpoint and hardware breakpoint at the same | |
2395 | address). */ | |
e0d9a270 | 2396 | for (bp_location *loc : loc_range) |
b775012e | 2397 | { |
b775012e LM |
2398 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2399 | { | |
2400 | if (modified) | |
2401 | { | |
b775012e LM |
2402 | /* Re-parse the conditions since something changed. In that |
2403 | case we already freed the condition bytecodes (see | |
2404 | force_breakpoint_reinsertion). We just | |
2405 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2406 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2407 | loc->cond.get ()); | |
b775012e LM |
2408 | } |
2409 | ||
2410 | /* If we have a NULL bytecode expression, it means something | |
2411 | went wrong or we have a null condition expression. */ | |
2412 | if (!loc->cond_bytecode) | |
2413 | { | |
d8de7963 | 2414 | null_condition_or_parse_error = true; |
b775012e LM |
2415 | break; |
2416 | } | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | /* If any of these happened, it means we will have to evaluate the conditions | |
2421 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2422 | for all the other duplicate locations, thus we free all of them here. | |
2423 | ||
2424 | This is so we have a finer control over which locations' conditions are | |
2425 | being evaluated by GDB or the remote stub. */ | |
2426 | if (null_condition_or_parse_error) | |
2427 | { | |
e0d9a270 | 2428 | for (bp_location *loc : loc_range) |
b775012e | 2429 | { |
b775012e LM |
2430 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2431 | { | |
2432 | /* Only go as far as the first NULL bytecode is | |
2433 | located. */ | |
2434 | if (!loc->cond_bytecode) | |
2435 | return; | |
2436 | ||
833177a4 | 2437 | loc->cond_bytecode.reset (); |
b775012e LM |
2438 | } |
2439 | } | |
2440 | } | |
2441 | ||
7f32a4d5 PA |
2442 | /* No NULL conditions or failed bytecode generation. Build a |
2443 | condition list for this location's address. If we have software | |
2444 | and hardware locations at the same address, they aren't | |
2445 | considered duplicates, but we still marge all the conditions | |
2446 | anyway, as it's simpler, and doesn't really make a practical | |
2447 | difference. */ | |
e0d9a270 SM |
2448 | for (bp_location *loc : loc_range) |
2449 | if (loc->cond | |
2450 | && is_breakpoint (loc->owner) | |
2451 | && loc->pspace->num == bl->pspace->num | |
2452 | && loc->owner->enable_state == bp_enabled | |
2453 | && loc->enabled | |
2454 | && !loc->disabled_by_cond) | |
2455 | { | |
2456 | /* Add the condition to the vector. This will be used later | |
2457 | to send the conditions to the target. */ | |
2458 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2459 | } | |
b775012e LM |
2460 | |
2461 | return; | |
2462 | } | |
2463 | ||
d3ce09f5 SS |
2464 | /* Parses a command described by string CMD into an agent expression |
2465 | bytecode suitable for evaluation by the bytecode interpreter. | |
2466 | Return NULL if there was any error during parsing. */ | |
2467 | ||
833177a4 | 2468 | static agent_expr_up |
d3ce09f5 SS |
2469 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2470 | { | |
bbc13ae3 KS |
2471 | const char *cmdrest; |
2472 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2473 | struct gdbarch *gdbarch = get_current_arch (); |
2474 | ||
833177a4 | 2475 | if (cmd == NULL) |
d3ce09f5 SS |
2476 | return NULL; |
2477 | ||
2478 | cmdrest = cmd; | |
2479 | ||
2480 | if (*cmdrest == ',') | |
2481 | ++cmdrest; | |
f1735a53 | 2482 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2483 | |
2484 | if (*cmdrest++ != '"') | |
2485 | error (_("No format string following the location")); | |
2486 | ||
2487 | format_start = cmdrest; | |
2488 | ||
8e481c3b | 2489 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2490 | |
2491 | format_end = cmdrest; | |
2492 | ||
2493 | if (*cmdrest++ != '"') | |
2494 | error (_("Bad format string, non-terminated '\"'.")); | |
2495 | ||
f1735a53 | 2496 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2497 | |
2498 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2499 | error (_("Invalid argument syntax")); | |
2500 | ||
2501 | if (*cmdrest == ',') | |
2502 | cmdrest++; | |
f1735a53 | 2503 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2504 | |
2505 | /* For each argument, make an expression. */ | |
2506 | ||
8e481c3b | 2507 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2508 | while (*cmdrest != '\0') |
2509 | { | |
bbc13ae3 | 2510 | const char *cmd1; |
d3ce09f5 SS |
2511 | |
2512 | cmd1 = cmdrest; | |
4d01a485 | 2513 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2514 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2515 | cmdrest = cmd1; |
2516 | if (*cmdrest == ',') | |
2517 | ++cmdrest; | |
2518 | } | |
2519 | ||
833177a4 PA |
2520 | agent_expr_up aexpr; |
2521 | ||
d3ce09f5 SS |
2522 | /* We don't want to stop processing, so catch any errors |
2523 | that may show up. */ | |
a70b8144 | 2524 | try |
d3ce09f5 | 2525 | { |
036e657b JB |
2526 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2527 | format_start, format_end - format_start, | |
8e481c3b | 2528 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2529 | } |
230d2906 | 2530 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2531 | { |
2532 | /* If we got here, it means the command could not be parsed to a valid | |
2533 | bytecode expression and thus can't be evaluated on the target's side. | |
2534 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2535 | } |
492d29ea | 2536 | |
d3ce09f5 SS |
2537 | /* We have a valid agent expression, return it. */ |
2538 | return aexpr; | |
2539 | } | |
2540 | ||
2541 | /* Based on location BL, create a list of breakpoint commands to be | |
2542 | passed on to the target. If we have duplicated locations with | |
2543 | different commands, we will add any such to the list. */ | |
2544 | ||
2545 | static void | |
2546 | build_target_command_list (struct bp_location *bl) | |
2547 | { | |
d8de7963 | 2548 | bool null_command_or_parse_error = false; |
d3ce09f5 | 2549 | int modified = bl->needs_update; |
d3ce09f5 | 2550 | |
3cde5c42 PA |
2551 | /* Clear commands left over from a previous insert. */ |
2552 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2553 | |
41fac0cf | 2554 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2555 | return; |
2556 | ||
41fac0cf PA |
2557 | /* For now, limit to agent-style dprintf breakpoints. */ |
2558 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2559 | return; |
2560 | ||
e0d9a270 SM |
2561 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2562 | ||
7f32a4d5 PA |
2563 | /* For now, if we have any location at the same address that isn't a |
2564 | dprintf, don't install the target-side commands, as that would | |
2565 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2566 | control. */ |
e0d9a270 SM |
2567 | for (bp_location *loc : loc_range) |
2568 | if (is_breakpoint (loc->owner) | |
2569 | && loc->pspace->num == bl->pspace->num | |
2570 | && loc->owner->type != bp_dprintf) | |
2571 | return; | |
41fac0cf | 2572 | |
d3ce09f5 SS |
2573 | /* Do a first pass to check for locations with no assigned |
2574 | conditions or conditions that fail to parse to a valid agent expression | |
2575 | bytecode. If any of these happen, then it's no use to send conditions | |
2576 | to the target since this location will always trigger and generate a | |
2577 | response back to GDB. */ | |
e0d9a270 | 2578 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2579 | { |
d3ce09f5 SS |
2580 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2581 | { | |
2582 | if (modified) | |
2583 | { | |
d3ce09f5 SS |
2584 | /* Re-parse the commands since something changed. In that |
2585 | case we already freed the command bytecodes (see | |
2586 | force_breakpoint_reinsertion). We just | |
2587 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2588 | loc->cmd_bytecode |
2589 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2590 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2591 | } |
2592 | ||
2593 | /* If we have a NULL bytecode expression, it means something | |
2594 | went wrong or we have a null command expression. */ | |
2595 | if (!loc->cmd_bytecode) | |
2596 | { | |
d8de7963 | 2597 | null_command_or_parse_error = true; |
d3ce09f5 SS |
2598 | break; |
2599 | } | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | /* If anything failed, then we're not doing target-side commands, | |
2604 | and so clean up. */ | |
2605 | if (null_command_or_parse_error) | |
2606 | { | |
e0d9a270 SM |
2607 | for (bp_location *loc : loc_range) |
2608 | if (is_breakpoint (loc->owner) | |
2609 | && loc->pspace->num == bl->pspace->num) | |
2610 | { | |
2611 | /* Only go as far as the first NULL bytecode is | |
2612 | located. */ | |
2613 | if (loc->cmd_bytecode == NULL) | |
2614 | return; | |
d3ce09f5 | 2615 | |
e0d9a270 SM |
2616 | loc->cmd_bytecode.reset (); |
2617 | } | |
d3ce09f5 SS |
2618 | } |
2619 | ||
7f32a4d5 PA |
2620 | /* No NULL commands or failed bytecode generation. Build a command |
2621 | list for all duplicate locations at this location's address. | |
2622 | Note that here we must care for whether the breakpoint location | |
2623 | types are considered duplicates, otherwise, say, if we have a | |
2624 | software and hardware location at the same address, the target | |
2625 | could end up running the commands twice. For the moment, we only | |
2626 | support targets-side commands with dprintf, but it doesn't hurt | |
2627 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2628 | for (bp_location *loc : loc_range) |
2629 | if (breakpoint_locations_match (bl, loc) | |
2630 | && loc->owner->extra_string | |
2631 | && is_breakpoint (loc->owner) | |
2632 | && loc->pspace->num == bl->pspace->num | |
2633 | && loc->owner->enable_state == bp_enabled | |
2634 | && loc->enabled | |
2635 | && !loc->disabled_by_cond) | |
2636 | { | |
2637 | /* Add the command to the vector. This will be used later | |
2638 | to send the commands to the target. */ | |
2639 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2640 | } | |
d3ce09f5 SS |
2641 | |
2642 | bl->target_info.persist = 0; | |
2643 | /* Maybe flag this location as persistent. */ | |
2644 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2645 | bl->target_info.persist = 1; | |
2646 | } | |
2647 | ||
833b7ab5 YQ |
2648 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2649 | of breakpoint according to ADDR except single-step breakpoint. | |
2650 | Get the kind of single-step breakpoint according to the current | |
2651 | registers state. */ | |
cd6c3b4f YQ |
2652 | |
2653 | static int | |
b2ff9ed3 | 2654 | breakpoint_kind (const struct bp_location *bl, CORE_ADDR *addr) |
cd6c3b4f | 2655 | { |
833b7ab5 YQ |
2656 | if (bl->owner->type == bp_single_step) |
2657 | { | |
2658 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2659 | struct regcache *regcache; | |
2660 | ||
00431a78 | 2661 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2662 | |
2663 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2664 | regcache, addr); | |
2665 | } | |
2666 | else | |
2667 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2668 | } |
2669 | ||
47e2c30a TV |
2670 | /* Rethrow the currently handled exception, if it's a TARGET_CLOSE_ERROR. |
2671 | E is either the currently handled exception, or a copy, or a sliced copy, | |
2672 | so we can't rethrow that one, but we can use it to inspect the properties | |
2673 | of the currently handled exception. */ | |
2674 | ||
2675 | static void | |
2676 | rethrow_on_target_close_error (const gdb_exception &e) | |
2677 | { | |
2678 | if (e.reason == 0) | |
2679 | return; | |
2680 | /* Can't set the breakpoint. */ | |
2681 | ||
2682 | if (e.error != TARGET_CLOSE_ERROR) | |
2683 | return; | |
2684 | ||
2685 | /* If the target has closed then it will have deleted any breakpoints | |
2686 | inserted within the target inferior, as a result any further attempts | |
2687 | to interact with the breakpoint objects is not possible. Just rethrow | |
2688 | the error. Don't use e to rethrow, to prevent object slicing of the | |
2689 | exception. */ | |
2690 | throw; | |
2691 | } | |
b2829fcf | 2692 | |
35df4500 TJB |
2693 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2694 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2695 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2696 | Returns 0 for success, 1 if the bp_location type is not supported or |
2697 | -1 for failure. | |
879bfdc2 | 2698 | |
4a64f543 MS |
2699 | NOTE drow/2003-09-09: This routine could be broken down to an |
2700 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2701 | static int |
35df4500 | 2702 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2703 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2704 | int *disabled_breaks, |
dd61ec5c MW |
2705 | int *hw_breakpoint_error, |
2706 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2707 | { |
cc06b668 | 2708 | gdb_exception bp_excpt; |
879bfdc2 | 2709 | |
b775012e | 2710 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2711 | return 0; |
2712 | ||
35c63cd8 JB |
2713 | /* Note we don't initialize bl->target_info, as that wipes out |
2714 | the breakpoint location's shadow_contents if the breakpoint | |
2715 | is still inserted at that location. This in turn breaks | |
2716 | target_read_memory which depends on these buffers when | |
2717 | a memory read is requested at the breakpoint location: | |
2718 | Once the target_info has been wiped, we fail to see that | |
2719 | we have a breakpoint inserted at that address and thus | |
2720 | read the breakpoint instead of returning the data saved in | |
2721 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2722 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2723 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2724 | bl->target_info.length = bl->length; |
8181d85f | 2725 | |
b775012e LM |
2726 | /* When working with target-side conditions, we must pass all the conditions |
2727 | for the same breakpoint address down to the target since GDB will not | |
2728 | insert those locations. With a list of breakpoint conditions, the target | |
2729 | can decide when to stop and notify GDB. */ | |
2730 | ||
2731 | if (is_breakpoint (bl->owner)) | |
2732 | { | |
2733 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2734 | build_target_command_list (bl); |
2735 | /* Reset the modification marker. */ | |
b775012e LM |
2736 | bl->needs_update = 0; |
2737 | } | |
2738 | ||
7f32a4d5 PA |
2739 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2740 | set at a read-only address, then a breakpoint location will have | |
2741 | been changed to hardware breakpoint before we get here. If it is | |
2742 | "off" however, error out before actually trying to insert the | |
2743 | breakpoint, with a nicer error message. */ | |
35df4500 | 2744 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2745 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2746 | { |
7f32a4d5 | 2747 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2748 | |
7f32a4d5 PA |
2749 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2750 | { | |
6cb06a8c TT |
2751 | gdb_printf (tmp_error_stream, |
2752 | _("Cannot insert breakpoint %d.\n" | |
2753 | "Cannot set software breakpoint " | |
2754 | "at read-only address %s\n"), | |
2755 | bl->owner->number, | |
2756 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2757 | return 1; |
765dc015 | 2758 | } |
7f32a4d5 PA |
2759 | } |
2760 | ||
2761 | if (bl->loc_type == bp_loc_software_breakpoint | |
2762 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2763 | { | |
879bfdc2 DJ |
2764 | /* First check to see if we have to handle an overlay. */ |
2765 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2766 | || bl->section == NULL |
2767 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2768 | { |
2769 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2770 | try |
dd61ec5c | 2771 | { |
0000e5cc PA |
2772 | int val; |
2773 | ||
c47614fe | 2774 | val = bl->owner->insert_location (bl); |
0000e5cc | 2775 | if (val) |
688fca4f | 2776 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2777 | } |
94aeb44b | 2778 | catch (gdb_exception &e) |
dd61ec5c | 2779 | { |
47e2c30a | 2780 | rethrow_on_target_close_error (e); |
94aeb44b | 2781 | bp_excpt = std::move (e); |
dd61ec5c | 2782 | } |
879bfdc2 DJ |
2783 | } |
2784 | else | |
2785 | { | |
4a64f543 | 2786 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2787 | Shall we set a breakpoint at the LMA? */ |
2788 | if (!overlay_events_enabled) | |
2789 | { | |
2790 | /* Yes -- overlay event support is not active, | |
2791 | so we must try to set a breakpoint at the LMA. | |
2792 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2793 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2794 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2795 | bl->owner->number); |
879bfdc2 DJ |
2796 | else |
2797 | { | |
35df4500 TJB |
2798 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2799 | bl->section); | |
879bfdc2 | 2800 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2801 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2802 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2803 | |
2804 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2805 | try |
0000e5cc PA |
2806 | { |
2807 | int val; | |
2808 | ||
579c6ad9 | 2809 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2810 | = breakpoint_kind (bl, &addr); |
2811 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2812 | val = target_insert_breakpoint (bl->gdbarch, |
2813 | &bl->overlay_target_info); | |
2814 | if (val) | |
688fca4f PA |
2815 | bp_excpt |
2816 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2817 | } |
94aeb44b | 2818 | catch (gdb_exception &e) |
0000e5cc | 2819 | { |
47e2c30a | 2820 | rethrow_on_target_close_error (e); |
94aeb44b | 2821 | bp_excpt = std::move (e); |
0000e5cc PA |
2822 | } |
2823 | ||
688fca4f | 2824 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2825 | gdb_printf (tmp_error_stream, |
2826 | "Overlay breakpoint %d " | |
2827 | "failed: in ROM?\n", | |
2828 | bl->owner->number); | |
879bfdc2 DJ |
2829 | } |
2830 | } | |
2831 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2832 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2833 | { |
2834 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2835 | try |
dda83cd7 | 2836 | { |
0000e5cc PA |
2837 | int val; |
2838 | ||
c47614fe | 2839 | val = bl->owner->insert_location (bl); |
0000e5cc | 2840 | if (val) |
688fca4f | 2841 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2842 | } |
94aeb44b | 2843 | catch (gdb_exception &e) |
dda83cd7 | 2844 | { |
47e2c30a | 2845 | rethrow_on_target_close_error (e); |
94aeb44b | 2846 | bp_excpt = std::move (e); |
dda83cd7 | 2847 | } |
879bfdc2 DJ |
2848 | } |
2849 | else | |
2850 | { | |
2851 | /* No. This breakpoint will not be inserted. | |
2852 | No error, but do not mark the bp as 'inserted'. */ | |
2853 | return 0; | |
2854 | } | |
2855 | } | |
2856 | ||
688fca4f | 2857 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2858 | { |
2859 | /* Can't set the breakpoint. */ | |
80dc83fd AB |
2860 | gdb_assert (bl->owner != nullptr); |
2861 | ||
0000e5cc PA |
2862 | /* In some cases, we might not be able to insert a |
2863 | breakpoint in a shared library that has already been | |
2864 | removed, but we have not yet processed the shlib unload | |
2865 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2866 | breakpoint insertion themselves can't tell why the |
2867 | breakpoint insertion failed (e.g., the remote target | |
2868 | doesn't define error codes), so we must treat generic | |
2869 | errors as memory errors. */ | |
688fca4f PA |
2870 | if (bp_excpt.reason == RETURN_ERROR |
2871 | && (bp_excpt.error == GENERIC_ERROR | |
2872 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2873 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2874 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2875 | || shared_objfile_contains_address_p (bl->pspace, |
2876 | bl->address))) | |
879bfdc2 | 2877 | { |
4a64f543 | 2878 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2879 | bl->shlib_disabled = 1; |
76727919 | 2880 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2881 | if (!*disabled_breaks) |
2882 | { | |
6cb06a8c TT |
2883 | gdb_printf (tmp_error_stream, |
2884 | "Cannot insert breakpoint %d.\n", | |
2885 | bl->owner->number); | |
2886 | gdb_printf (tmp_error_stream, | |
2887 | "Temporarily disabling shared " | |
2888 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2889 | } |
2890 | *disabled_breaks = 1; | |
6cb06a8c TT |
2891 | gdb_printf (tmp_error_stream, |
2892 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2893 | return 0; |
879bfdc2 DJ |
2894 | } |
2895 | else | |
879bfdc2 | 2896 | { |
35df4500 | 2897 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2898 | { |
0000e5cc | 2899 | *hw_breakpoint_error = 1; |
688fca4f | 2900 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2901 | gdb_printf (tmp_error_stream, |
2902 | "Cannot insert hardware breakpoint %d%s", | |
2903 | bl->owner->number, | |
2904 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2905 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2906 | gdb_printf (tmp_error_stream, "%s.\n", |
2907 | bp_excpt.what ()); | |
879bfdc2 DJ |
2908 | } |
2909 | else | |
2910 | { | |
688fca4f | 2911 | if (bp_excpt.message == NULL) |
0000e5cc | 2912 | { |
1ccbe998 | 2913 | std::string message |
0000e5cc PA |
2914 | = memory_error_message (TARGET_XFER_E_IO, |
2915 | bl->gdbarch, bl->address); | |
0000e5cc | 2916 | |
6cb06a8c TT |
2917 | gdb_printf (tmp_error_stream, |
2918 | "Cannot insert breakpoint %d.\n" | |
2919 | "%s\n", | |
2920 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2921 | } |
2922 | else | |
2923 | { | |
6cb06a8c TT |
2924 | gdb_printf (tmp_error_stream, |
2925 | "Cannot insert breakpoint %d: %s\n", | |
2926 | bl->owner->number, | |
2927 | bp_excpt.what ()); | |
0000e5cc | 2928 | } |
879bfdc2 | 2929 | } |
0000e5cc | 2930 | return 1; |
879bfdc2 DJ |
2931 | |
2932 | } | |
2933 | } | |
2934 | else | |
35df4500 | 2935 | bl->inserted = 1; |
879bfdc2 | 2936 | |
0000e5cc | 2937 | return 0; |
879bfdc2 DJ |
2938 | } |
2939 | ||
35df4500 | 2940 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2941 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2942 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2943 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2944 | { |
0000e5cc PA |
2945 | int val; |
2946 | ||
c47614fe | 2947 | val = bl->owner->insert_location (bl); |
85d721b8 PA |
2948 | |
2949 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2950 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2951 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2952 | { |
85d721b8 PA |
2953 | /* But don't try to insert it, if there's already another |
2954 | hw_access location that would be considered a duplicate | |
2955 | of this one. */ | |
48d7020b | 2956 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2957 | if (loc != bl |
85d721b8 | 2958 | && loc->watchpoint_type == hw_access |
35df4500 | 2959 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2960 | { |
35df4500 TJB |
2961 | bl->duplicate = 1; |
2962 | bl->inserted = 1; | |
2963 | bl->target_info = loc->target_info; | |
2964 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2965 | val = 0; |
2966 | break; | |
2967 | } | |
2968 | ||
2969 | if (val == 1) | |
2970 | { | |
77b06cd7 | 2971 | bl->watchpoint_type = hw_access; |
c47614fe | 2972 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2973 | |
2974 | if (val) | |
2975 | /* Back to the original value. */ | |
2976 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2977 | } |
2978 | } | |
2979 | ||
35df4500 | 2980 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2981 | } |
2982 | ||
35df4500 | 2983 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2984 | { |
0000e5cc PA |
2985 | int val; |
2986 | ||
c47614fe | 2987 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2988 | if (val) |
2989 | { | |
2990 | bl->owner->enable_state = bp_disabled; | |
2991 | ||
2992 | if (val == 1) | |
2993 | warning (_("\ | |
2994 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2995 | of catchpoint."), bl->owner->number); | |
2996 | else | |
2997 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2998 | } | |
2999 | ||
3000 | bl->inserted = (val == 0); | |
1640b821 DJ |
3001 | |
3002 | /* We've already printed an error message if there was a problem | |
3003 | inserting this catchpoint, and we've disabled the catchpoint, | |
3004 | so just return success. */ | |
3005 | return 0; | |
879bfdc2 DJ |
3006 | } |
3007 | ||
3008 | return 0; | |
3009 | } | |
3010 | ||
6c95b8df PA |
3011 | /* This function is called when program space PSPACE is about to be |
3012 | deleted. It takes care of updating breakpoints to not reference | |
3013 | PSPACE anymore. */ | |
3014 | ||
3015 | void | |
3016 | breakpoint_program_space_exit (struct program_space *pspace) | |
3017 | { | |
6c95b8df | 3018 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
3019 | for (breakpoint *b : all_breakpoints_safe ()) |
3020 | if (b->pspace == pspace) | |
3021 | delete_breakpoint (b); | |
6c95b8df PA |
3022 | |
3023 | /* Breakpoints set through other program spaces could have locations | |
3024 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 3025 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
3026 | { |
3027 | struct bp_location *tmp; | |
3028 | ||
3029 | if (loc->pspace == pspace) | |
3030 | { | |
2bdf28a0 | 3031 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
3032 | if (loc->owner->loc == loc) |
3033 | loc->owner->loc = loc->next; | |
3034 | else | |
3035 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
3036 | if (tmp->next == loc) | |
3037 | { | |
3038 | tmp->next = loc->next; | |
3039 | break; | |
3040 | } | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | /* Now update the global location list to permanently delete the | |
3045 | removed locations above. */ | |
44702360 | 3046 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
3047 | } |
3048 | ||
74960c60 VP |
3049 | /* Make sure all breakpoints are inserted in inferior. |
3050 | Throws exception on any error. | |
3051 | A breakpoint that is already inserted won't be inserted | |
3052 | again, so calling this function twice is safe. */ | |
3053 | void | |
3054 | insert_breakpoints (void) | |
3055 | { | |
43892fdf | 3056 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 3057 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
3058 | { |
3059 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3060 | ||
d8de7963 | 3061 | update_watchpoint (w, false /* don't reparse. */); |
3a5c3e22 | 3062 | } |
74960c60 | 3063 | |
04086b45 PA |
3064 | /* Updating watchpoints creates new locations, so update the global |
3065 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
3066 | ignore breakpoints_always_inserted_mode. Also, |
3067 | update_global_location_list tries to "upgrade" software | |
3068 | breakpoints to hardware breakpoints to handle "set breakpoint | |
3069 | auto-hw", so we need to call it even if we don't have new | |
3070 | locations. */ | |
04086b45 | 3071 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
3072 | } |
3073 | ||
b775012e LM |
3074 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3075 | target. It is the case with deleting and disabling of breakpoints when using | |
3076 | always-inserted mode. */ | |
3077 | ||
3078 | static void | |
3079 | update_inserted_breakpoint_locations (void) | |
3080 | { | |
b775012e LM |
3081 | int error_flag = 0; |
3082 | int val = 0; | |
3083 | int disabled_breaks = 0; | |
3084 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3085 | int hw_bp_details_reported = 0; |
b775012e | 3086 | |
d7e74731 | 3087 | string_file tmp_error_stream; |
b775012e LM |
3088 | |
3089 | /* Explicitly mark the warning -- this will only be printed if | |
3090 | there was an error. */ | |
d7e74731 | 3091 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 3092 | |
5ed8105e | 3093 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 3094 | |
48d7020b | 3095 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
3096 | { |
3097 | /* We only want to update software breakpoints and hardware | |
3098 | breakpoints. */ | |
3099 | if (!is_breakpoint (bl->owner)) | |
3100 | continue; | |
3101 | ||
3102 | /* We only want to update locations that are already inserted | |
3103 | and need updating. This is to avoid unwanted insertion during | |
3104 | deletion of breakpoints. */ | |
4daf1902 | 3105 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
3106 | continue; |
3107 | ||
3108 | switch_to_program_space_and_thread (bl->pspace); | |
3109 | ||
3110 | /* For targets that support global breakpoints, there's no need | |
3111 | to select an inferior to insert breakpoint to. In fact, even | |
3112 | if we aren't attached to any process yet, we should still | |
3113 | insert breakpoints. */ | |
f5656ead | 3114 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3115 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
3116 | continue; |
3117 | ||
d7e74731 | 3118 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3119 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3120 | if (val) |
3121 | error_flag = val; | |
3122 | } | |
3123 | ||
3124 | if (error_flag) | |
3125 | { | |
223ffa71 | 3126 | target_terminal::ours_for_output (); |
b775012e LM |
3127 | error_stream (tmp_error_stream); |
3128 | } | |
b775012e LM |
3129 | } |
3130 | ||
c30eee59 | 3131 | /* Used when starting or continuing the program. */ |
c906108c | 3132 | |
74960c60 VP |
3133 | static void |
3134 | insert_breakpoint_locations (void) | |
c906108c | 3135 | { |
eacd795a | 3136 | int error_flag = 0; |
c906108c | 3137 | int val = 0; |
3fbb6ffa | 3138 | int disabled_breaks = 0; |
81d0cc19 | 3139 | int hw_breakpoint_error = 0; |
dd61ec5c | 3140 | int hw_bp_error_explained_already = 0; |
c906108c | 3141 | |
d7e74731 PA |
3142 | string_file tmp_error_stream; |
3143 | ||
81d0cc19 GS |
3144 | /* Explicitly mark the warning -- this will only be printed if |
3145 | there was an error. */ | |
d7e74731 | 3146 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3147 | |
5ed8105e | 3148 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3149 | |
48d7020b | 3150 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3151 | { |
b775012e | 3152 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3153 | continue; |
3154 | ||
4a64f543 MS |
3155 | /* There is no point inserting thread-specific breakpoints if |
3156 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3157 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3158 | if (bl->owner->thread != -1 |
5d5658a1 | 3159 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3160 | continue; |
3161 | ||
35df4500 | 3162 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3163 | |
3164 | /* For targets that support global breakpoints, there's no need | |
3165 | to select an inferior to insert breakpoint to. In fact, even | |
3166 | if we aren't attached to any process yet, we should still | |
3167 | insert breakpoints. */ | |
f5656ead | 3168 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3169 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3170 | continue; |
3171 | ||
d7e74731 | 3172 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3173 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3174 | if (val) |
eacd795a | 3175 | error_flag = val; |
879bfdc2 | 3176 | } |
c906108c | 3177 | |
4a64f543 MS |
3178 | /* If we failed to insert all locations of a watchpoint, remove |
3179 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3180 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee | 3181 | { |
d8de7963 | 3182 | bool some_failed = false; |
a5606eee VP |
3183 | |
3184 | if (!is_hardware_watchpoint (bpt)) | |
3185 | continue; | |
3186 | ||
d6b74ac4 | 3187 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3188 | continue; |
74960c60 VP |
3189 | |
3190 | if (bpt->disposition == disp_del_at_next_stop) | |
3191 | continue; | |
a5606eee | 3192 | |
40cb8ca5 | 3193 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3194 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee | 3195 | { |
d8de7963 | 3196 | some_failed = true; |
a5606eee VP |
3197 | break; |
3198 | } | |
40cb8ca5 | 3199 | |
a5606eee VP |
3200 | if (some_failed) |
3201 | { | |
40cb8ca5 | 3202 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3203 | if (loc->inserted) |
834c0d03 | 3204 | remove_breakpoint (loc); |
a5606eee VP |
3205 | |
3206 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3207 | tmp_error_stream.printf ("Could not insert " |
3208 | "hardware watchpoint %d.\n", | |
3209 | bpt->number); | |
eacd795a | 3210 | error_flag = -1; |
a5606eee VP |
3211 | } |
3212 | } | |
3213 | ||
eacd795a | 3214 | if (error_flag) |
81d0cc19 GS |
3215 | { |
3216 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3217 | message about possibly exhausted resources. */ |
dd61ec5c | 3218 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3219 | { |
d7e74731 | 3220 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3221 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3222 | } |
223ffa71 | 3223 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3224 | error_stream (tmp_error_stream); |
3225 | } | |
c906108c SS |
3226 | } |
3227 | ||
c30eee59 TJB |
3228 | /* Used when the program stops. |
3229 | Returns zero if successful, or non-zero if there was a problem | |
3230 | removing a breakpoint location. */ | |
3231 | ||
c906108c | 3232 | int |
fba45db2 | 3233 | remove_breakpoints (void) |
c906108c | 3234 | { |
3a1bae8e | 3235 | int val = 0; |
c906108c | 3236 | |
48d7020b | 3237 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3238 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3239 | val |= remove_breakpoint (bl); |
01add95b | 3240 | |
3a1bae8e | 3241 | return val; |
c906108c SS |
3242 | } |
3243 | ||
49fa26b0 PA |
3244 | /* When a thread exits, remove breakpoints that are related to |
3245 | that thread. */ | |
3246 | ||
3247 | static void | |
3248 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3249 | { | |
1428b37a | 3250 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3251 | { |
5d5658a1 | 3252 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3253 | { |
3254 | b->disposition = disp_del_at_next_stop; | |
3255 | ||
6cb06a8c | 3256 | gdb_printf (_("\ |
43792cf0 | 3257 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3258 | b->number, print_thread_id (tp)); |
49fa26b0 PA |
3259 | |
3260 | /* Hide it from the user. */ | |
3261 | b->number = 0; | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | ||
f3869b1a | 3266 | /* See breakpoint.h. */ |
6c95b8df | 3267 | |
f3869b1a | 3268 | void |
00431a78 | 3269 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3270 | { |
6c95b8df | 3271 | int val; |
6c95b8df | 3272 | |
48d7020b | 3273 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3274 | { |
3275 | if (bl->pspace != inf->pspace) | |
3276 | continue; | |
6c95b8df | 3277 | |
01add95b SM |
3278 | if (bl->inserted && !bl->target_info.persist) |
3279 | { | |
3280 | val = remove_breakpoint (bl); | |
3281 | if (val != 0) | |
3282 | return; | |
3283 | } | |
3284 | } | |
6c95b8df PA |
3285 | } |
3286 | ||
e58b0e63 PA |
3287 | static int internal_breakpoint_number = -1; |
3288 | ||
84f4c1fe PM |
3289 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3290 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3291 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3292 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3293 | breakpoint_count and that value incremented. Internal breakpoints |
3294 | do not set the internal var bpnum. */ | |
3295 | static void | |
3296 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3297 | { | |
3298 | if (internal) | |
3299 | b->number = internal_breakpoint_number--; | |
3300 | else | |
3301 | { | |
3302 | set_breakpoint_count (breakpoint_count + 1); | |
3303 | b->number = breakpoint_count; | |
3304 | } | |
3305 | } | |
3306 | ||
829b6b37 TV |
3307 | /* Create a TYPE breakpoint on ADDRESS from an object file with GDBARCH. */ |
3308 | ||
e62c965a | 3309 | static struct breakpoint * |
a6d9a66e | 3310 | create_internal_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 3311 | CORE_ADDR address, enum bptype type) |
e62c965a | 3312 | { |
752a2291 PA |
3313 | std::unique_ptr<internal_breakpoint> b |
3314 | (new internal_breakpoint (gdbarch, type, address)); | |
e62c965a | 3315 | |
e62c965a | 3316 | b->number = internal_breakpoint_number--; |
e62c965a | 3317 | |
752a2291 | 3318 | return add_to_breakpoint_chain (std::move (b)); |
e62c965a PP |
3319 | } |
3320 | ||
829b6b37 TV |
3321 | /* Create a TYPE breakpoint on minimal symbol MSYM from an object file with |
3322 | GDBARCH. */ | |
3323 | ||
3324 | static struct breakpoint * | |
3325 | create_internal_breakpoint (struct gdbarch *gdbarch, | |
3326 | struct bound_minimal_symbol &msym, enum bptype type) | |
3327 | { | |
3328 | CORE_ADDR address; | |
3329 | ||
3330 | address = msym.value_address (); | |
3331 | ||
3332 | address = gdbarch_convert_from_func_ptr_addr | |
3333 | (gdbarch, address, current_inferior ()->top_target ()); | |
3334 | ||
3335 | /* Note that we're not using gdbarch_addr_bits_remove here, because that's | |
3336 | related to addresses in $pc. We're getting the address from the | |
3337 | minimal symbol table. */ | |
3338 | ||
3339 | /* Is gdbarch_deprecated_function_start_offset needed here? Or is that dealt | |
3340 | with elsewhere? Needs testing on vax. */ | |
3341 | ||
3342 | if (gdbarch_skip_entrypoint_p (gdbarch)) | |
3343 | address = gdbarch_skip_entrypoint (gdbarch, address); | |
3344 | ||
3345 | return create_internal_breakpoint (gdbarch, address, type); | |
3346 | } | |
3347 | ||
17450429 PP |
3348 | static const char *const longjmp_names[] = |
3349 | { | |
3350 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3351 | }; | |
3352 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3353 | ||
3354 | /* Per-objfile data private to breakpoint.c. */ | |
3355 | struct breakpoint_objfile_data | |
3356 | { | |
3357 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3358 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3359 | |
3360 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3361 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3362 | |
28106bc2 | 3363 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3364 | int longjmp_searched = 0; |
28106bc2 | 3365 | |
45461e0d SM |
3366 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3367 | references. */ | |
3368 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3369 | |
17450429 | 3370 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3371 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3372 | |
3373 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3374 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3375 | |
3376 | /* True if we have looked for exception probes. */ | |
43dce439 | 3377 | int exception_searched = 0; |
28106bc2 | 3378 | |
45461e0d SM |
3379 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3380 | references. */ | |
3381 | std::vector<probe *> exception_probes; | |
17450429 PP |
3382 | }; |
3383 | ||
08b8a139 | 3384 | static const registry<objfile>::key<breakpoint_objfile_data> |
51d3063a | 3385 | breakpoint_objfile_key; |
17450429 PP |
3386 | |
3387 | /* Minimal symbol not found sentinel. */ | |
3388 | static struct minimal_symbol msym_not_found; | |
3389 | ||
3390 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3391 | ||
d8de7963 | 3392 | static bool |
17450429 PP |
3393 | msym_not_found_p (const struct minimal_symbol *msym) |
3394 | { | |
3395 | return msym == &msym_not_found; | |
3396 | } | |
3397 | ||
3398 | /* Return per-objfile data needed by breakpoint.c. | |
3399 | Allocate the data if necessary. */ | |
3400 | ||
3401 | static struct breakpoint_objfile_data * | |
3402 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3403 | { | |
3404 | struct breakpoint_objfile_data *bp_objfile_data; | |
3405 | ||
51d3063a | 3406 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3407 | if (bp_objfile_data == NULL) |
51d3063a | 3408 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3409 | return bp_objfile_data; |
3410 | } | |
3411 | ||
e62c965a | 3412 | static void |
af02033e | 3413 | create_overlay_event_breakpoint (void) |
e62c965a | 3414 | { |
af02033e | 3415 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3416 | |
2030c079 | 3417 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3418 | { |
3419 | struct breakpoint *b; | |
17450429 PP |
3420 | struct breakpoint_objfile_data *bp_objfile_data; |
3421 | CORE_ADDR addr; | |
69de3c6a | 3422 | |
17450429 PP |
3423 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3424 | ||
3b7344d5 | 3425 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3426 | continue; |
3427 | ||
3b7344d5 | 3428 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3429 | { |
3b7344d5 | 3430 | struct bound_minimal_symbol m; |
17450429 PP |
3431 | |
3432 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3433 | if (m.minsym == NULL) |
17450429 PP |
3434 | { |
3435 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3436 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3437 | continue; |
3438 | } | |
3439 | bp_objfile_data->overlay_msym = m; | |
3440 | } | |
e62c965a | 3441 | |
4aeddc50 | 3442 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3443 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3444 | bp_overlay_event); |
40d97ee2 | 3445 | b->locspec = new_explicit_location_spec_function (func_name); |
e62c965a | 3446 | |
69de3c6a | 3447 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3448 | { |
3449 | b->enable_state = bp_enabled; | |
3450 | overlay_events_enabled = 1; | |
3451 | } | |
69de3c6a PP |
3452 | else |
3453 | { | |
dda83cd7 SM |
3454 | b->enable_state = bp_disabled; |
3455 | overlay_events_enabled = 0; | |
69de3c6a | 3456 | } |
e62c965a | 3457 | } |
e62c965a PP |
3458 | } |
3459 | ||
2a7f6487 TV |
3460 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3461 | true if a breakpoint was installed. */ | |
3462 | ||
3463 | static bool | |
3464 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3465 | { |
2a7f6487 TV |
3466 | struct gdbarch *gdbarch = objfile->arch (); |
3467 | struct breakpoint_objfile_data *bp_objfile_data | |
3468 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3469 | |
2a7f6487 | 3470 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3471 | { |
2a7f6487 TV |
3472 | std::vector<probe *> ret |
3473 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3474 | |
2a7f6487 | 3475 | if (!ret.empty ()) |
94c93c35 | 3476 | { |
2a7f6487 TV |
3477 | /* We are only interested in checking one element. */ |
3478 | probe *p = ret[0]; | |
0fd8e87f | 3479 | |
2a7f6487 TV |
3480 | if (!p->can_evaluate_arguments ()) |
3481 | { | |
3482 | /* We cannot use the probe interface here, | |
3483 | because it does not know how to evaluate | |
3484 | arguments. */ | |
3485 | ret.clear (); | |
3486 | } | |
3487 | } | |
3488 | bp_objfile_data->longjmp_probes = ret; | |
3489 | bp_objfile_data->longjmp_searched = 1; | |
3490 | } | |
0fd8e87f | 3491 | |
2a7f6487 TV |
3492 | if (bp_objfile_data->longjmp_probes.empty ()) |
3493 | return false; | |
17450429 | 3494 | |
2a7f6487 TV |
3495 | for (probe *p : bp_objfile_data->longjmp_probes) |
3496 | { | |
3497 | struct breakpoint *b; | |
25f9533e | 3498 | |
2a7f6487 TV |
3499 | b = create_internal_breakpoint (gdbarch, |
3500 | p->get_relocated_address (objfile), | |
9efa3c7f | 3501 | bp_longjmp_master); |
264f9890 | 3502 | b->locspec = new_probe_location_spec ("-probe-stap libc:longjmp"); |
2a7f6487 TV |
3503 | b->enable_state = bp_disabled; |
3504 | } | |
aed57c53 | 3505 | |
2a7f6487 TV |
3506 | return true; |
3507 | } | |
25f9533e | 3508 | |
2a7f6487 TV |
3509 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3510 | Return true if at least one breakpoint was installed. */ | |
3511 | ||
3512 | static bool | |
3513 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3514 | { | |
3515 | struct gdbarch *gdbarch = objfile->arch (); | |
3516 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3517 | return false; | |
3518 | ||
3519 | struct breakpoint_objfile_data *bp_objfile_data | |
3520 | = get_breakpoint_objfile_data (objfile); | |
3521 | unsigned int installed_bp = 0; | |
3522 | ||
3523 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3524 | { | |
3525 | struct breakpoint *b; | |
3526 | const char *func_name; | |
3527 | CORE_ADDR addr; | |
2a7f6487 TV |
3528 | |
3529 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3530 | continue; | |
28106bc2 | 3531 | |
2a7f6487 TV |
3532 | func_name = longjmp_names[i]; |
3533 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3534 | { | |
3535 | struct bound_minimal_symbol m; | |
3536 | ||
3537 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3538 | if (m.minsym == NULL) | |
3539 | { | |
3540 | /* Prevent future lookups in this objfile. */ | |
3541 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3542 | continue; |
3543 | } | |
2a7f6487 TV |
3544 | bp_objfile_data->longjmp_msym[i] = m; |
3545 | } | |
28106bc2 | 3546 | |
4aeddc50 | 3547 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
9efa3c7f | 3548 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); |
40d97ee2 | 3549 | b->locspec = new_explicit_location_spec_function (func_name); |
2a7f6487 TV |
3550 | b->enable_state = bp_disabled; |
3551 | installed_bp++; | |
3552 | } | |
28106bc2 | 3553 | |
2a7f6487 TV |
3554 | return installed_bp > 0; |
3555 | } | |
0fd8e87f | 3556 | |
2a7f6487 | 3557 | /* Create a master longjmp breakpoint. */ |
17450429 | 3558 | |
2a7f6487 TV |
3559 | static void |
3560 | create_longjmp_master_breakpoint (void) | |
3561 | { | |
3562 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3563 | |
2a7f6487 TV |
3564 | for (struct program_space *pspace : program_spaces) |
3565 | { | |
3566 | set_current_program_space (pspace); | |
17450429 | 3567 | |
2a7f6487 TV |
3568 | for (objfile *obj : current_program_space->objfiles ()) |
3569 | { | |
3570 | /* Skip separate debug object, it's handled in the loop below. */ | |
3571 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3572 | continue; | |
3573 | ||
3574 | /* Try a probe kind breakpoint on main objfile. */ | |
3575 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3576 | continue; | |
3577 | ||
3578 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3579 | objfiles. */ | |
3580 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3581 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3582 | break; | |
94c93c35 TT |
3583 | } |
3584 | } | |
0fd8e87f UW |
3585 | } |
3586 | ||
af02033e | 3587 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3588 | static void |
af02033e | 3589 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3590 | { |
af02033e | 3591 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3592 | |
5ed8105e | 3593 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3594 | |
94c93c35 TT |
3595 | for (struct program_space *pspace : program_spaces) |
3596 | { | |
94c93c35 | 3597 | set_current_program_space (pspace); |
17450429 | 3598 | |
94c93c35 TT |
3599 | for (objfile *objfile : current_program_space->objfiles ()) |
3600 | { | |
3601 | struct breakpoint *b; | |
3602 | struct breakpoint_objfile_data *bp_objfile_data; | |
aa7d318d | 3603 | |
94c93c35 | 3604 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3605 | |
94c93c35 TT |
3606 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3607 | continue; | |
17450429 | 3608 | |
94c93c35 TT |
3609 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3610 | { | |
3611 | struct bound_minimal_symbol m; | |
17450429 | 3612 | |
94c93c35 | 3613 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3614 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3615 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3616 | { |
3617 | /* Prevent future lookups in this objfile. */ | |
3618 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3619 | continue; | |
3620 | } | |
3621 | bp_objfile_data->terminate_msym = m; | |
3622 | } | |
aa7d318d | 3623 | |
829b6b37 TV |
3624 | b = create_internal_breakpoint (objfile->arch (), |
3625 | bp_objfile_data->terminate_msym, | |
9efa3c7f | 3626 | bp_std_terminate_master); |
40d97ee2 | 3627 | b->locspec = new_explicit_location_spec_function (func_name); |
94c93c35 TT |
3628 | b->enable_state = bp_disabled; |
3629 | } | |
3630 | } | |
aa7d318d TT |
3631 | } |
3632 | ||
1940319c TV |
3633 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3634 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3635 | |
1940319c TV |
3636 | static bool |
3637 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3638 | { |
1940319c TV |
3639 | struct breakpoint *b; |
3640 | struct gdbarch *gdbarch; | |
3641 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3642 | |
1940319c | 3643 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3644 | |
1940319c TV |
3645 | /* We prefer the SystemTap probe point if it exists. */ |
3646 | if (!bp_objfile_data->exception_searched) | |
3647 | { | |
3648 | std::vector<probe *> ret | |
3649 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3650 | |
1940319c | 3651 | if (!ret.empty ()) |
28106bc2 | 3652 | { |
1940319c TV |
3653 | /* We are only interested in checking one element. */ |
3654 | probe *p = ret[0]; | |
25f9533e | 3655 | |
1940319c | 3656 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3657 | { |
1940319c TV |
3658 | /* We cannot use the probe interface here, because it does |
3659 | not know how to evaluate arguments. */ | |
3660 | ret.clear (); | |
25f9533e | 3661 | } |
28106bc2 | 3662 | } |
1940319c TV |
3663 | bp_objfile_data->exception_probes = ret; |
3664 | bp_objfile_data->exception_searched = 1; | |
3665 | } | |
28106bc2 | 3666 | |
1940319c TV |
3667 | if (bp_objfile_data->exception_probes.empty ()) |
3668 | return false; | |
45461e0d | 3669 | |
1940319c | 3670 | gdbarch = objfile->arch (); |
28106bc2 | 3671 | |
1940319c TV |
3672 | for (probe *p : bp_objfile_data->exception_probes) |
3673 | { | |
3674 | b = create_internal_breakpoint (gdbarch, | |
3675 | p->get_relocated_address (objfile), | |
9efa3c7f | 3676 | bp_exception_master); |
264f9890 | 3677 | b->locspec = new_probe_location_spec ("-probe-stap libgcc:unwind"); |
1940319c TV |
3678 | b->enable_state = bp_disabled; |
3679 | } | |
28106bc2 | 3680 | |
1940319c TV |
3681 | return true; |
3682 | } | |
28106bc2 | 3683 | |
1940319c TV |
3684 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3685 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3686 | |
1940319c TV |
3687 | static bool |
3688 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3689 | { | |
3690 | const char *const func_name = "_Unwind_DebugHook"; | |
3691 | struct breakpoint *b; | |
3692 | struct gdbarch *gdbarch; | |
3693 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3694 | |
1940319c | 3695 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3696 | |
1940319c TV |
3697 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3698 | return false; | |
17450429 | 3699 | |
1940319c TV |
3700 | gdbarch = objfile->arch (); |
3701 | ||
3702 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3703 | { | |
3704 | struct bound_minimal_symbol debug_hook; | |
3705 | ||
3706 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3707 | if (debug_hook.minsym == NULL) | |
3708 | { | |
3709 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3710 | return false; | |
186c406b | 3711 | } |
17450429 | 3712 | |
1940319c TV |
3713 | bp_objfile_data->exception_msym = debug_hook; |
3714 | } | |
3715 | ||
829b6b37 TV |
3716 | b = create_internal_breakpoint (gdbarch, bp_objfile_data->exception_msym, |
3717 | bp_exception_master); | |
40d97ee2 | 3718 | b->locspec = new_explicit_location_spec_function (func_name); |
1940319c TV |
3719 | b->enable_state = bp_disabled; |
3720 | ||
3721 | return true; | |
3722 | } | |
3723 | ||
3724 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3725 | ||
3726 | static void | |
3727 | create_exception_master_breakpoint (void) | |
3728 | { | |
3729 | for (objfile *obj : current_program_space->objfiles ()) | |
3730 | { | |
3731 | /* Skip separate debug object. */ | |
3732 | if (obj->separate_debug_objfile_backlink) | |
3733 | continue; | |
3734 | ||
3735 | /* Try a probe kind breakpoint. */ | |
3736 | if (create_exception_master_breakpoint_probe (obj)) | |
3737 | continue; | |
3738 | ||
7c6944ab TV |
3739 | /* Iterate over main and separate debug objects and try an |
3740 | _Unwind_DebugHook kind breakpoint. */ | |
3741 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3742 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3743 | break; |
186c406b | 3744 | } |
186c406b TT |
3745 | } |
3746 | ||
9ef9e6a6 KS |
3747 | /* Does B have a location spec? */ |
3748 | ||
d8de7963 | 3749 | static bool |
264f9890 | 3750 | breakpoint_location_spec_empty_p (const struct breakpoint *b) |
9ef9e6a6 | 3751 | { |
238dc9af | 3752 | return (b->locspec != nullptr && b->locspec->empty_p ()); |
9ef9e6a6 KS |
3753 | } |
3754 | ||
c906108c | 3755 | void |
fba45db2 | 3756 | update_breakpoints_after_exec (void) |
c906108c | 3757 | { |
25b22b0a PA |
3758 | /* We're about to delete breakpoints from GDB's lists. If the |
3759 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3760 | writing the breakpoints' "shadow contents" back into memory. The | |
3761 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3762 | do that. Instead, the target is responsible from marking | |
3763 | breakpoints out as soon as it detects an exec. We don't do that | |
3764 | here instead, because there may be other attempts to delete | |
3765 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3766 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3767 | if (bploc->pspace == current_program_space) |
3768 | gdb_assert (!bploc->inserted); | |
c906108c | 3769 | |
1428b37a | 3770 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3771 | { |
3772 | if (b->pspace != current_program_space) | |
c5aa993b | 3773 | continue; |
c906108c | 3774 | |
01add95b SM |
3775 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3776 | if (b->type == bp_shlib_event) | |
3777 | { | |
3778 | delete_breakpoint (b); | |
3779 | continue; | |
3780 | } | |
4efc6507 | 3781 | |
01add95b SM |
3782 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3783 | if (b->type == bp_jit_event) | |
3784 | { | |
3785 | delete_breakpoint (b); | |
3786 | continue; | |
3787 | } | |
c4093a6a | 3788 | |
01add95b SM |
3789 | /* Thread event breakpoints must be set anew after an exec(), |
3790 | as must overlay event and longjmp master breakpoints. */ | |
3791 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3792 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3793 | || b->type == bp_exception_master) | |
3794 | { | |
3795 | delete_breakpoint (b); | |
3796 | continue; | |
3797 | } | |
c5aa993b | 3798 | |
01add95b SM |
3799 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3800 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3801 | { | |
3802 | delete_breakpoint (b); | |
3803 | continue; | |
3804 | } | |
7c16b83e | 3805 | |
01add95b SM |
3806 | /* Just like single-step breakpoints. */ |
3807 | if (b->type == bp_single_step) | |
3808 | { | |
3809 | delete_breakpoint (b); | |
3810 | continue; | |
3811 | } | |
611c83ae | 3812 | |
01add95b SM |
3813 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3814 | after an exec. */ | |
3815 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3816 | || b->type == bp_longjmp_call_dummy | |
3817 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3818 | { | |
3819 | delete_breakpoint (b); | |
3820 | continue; | |
3821 | } | |
ce78b96d | 3822 | |
01add95b SM |
3823 | if (b->type == bp_catchpoint) |
3824 | { | |
3825 | /* For now, none of the bp_catchpoint breakpoints need to | |
3826 | do anything at this point. In the future, if some of | |
3827 | the catchpoints need to something, we will need to add | |
3828 | a new method, and call this method from here. */ | |
3829 | continue; | |
3830 | } | |
c5aa993b | 3831 | |
01add95b SM |
3832 | /* bp_finish is a special case. The only way we ought to be able |
3833 | to see one of these when an exec() has happened, is if the user | |
3834 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3835 | carries them to the call-site of the current callee, by setting | |
3836 | a temporary bp there and resuming. But in this case, the finish | |
3837 | will carry them entirely through the vfork & exec. | |
3838 | ||
3839 | We don't want to allow a bp_finish to remain inserted now. But | |
3840 | we can't safely delete it, 'cause finish_command has a handle to | |
3841 | the bp on a bpstat, and will later want to delete it. There's a | |
3842 | chance (and I've seen it happen) that if we delete the bp_finish | |
3843 | here, that its storage will get reused by the time finish_command | |
3844 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3845 | We really must allow finish_command to delete a bp_finish. | |
3846 | ||
3847 | In the absence of a general solution for the "how do we know | |
3848 | it's safe to delete something others may have handles to?" | |
3849 | problem, what we'll do here is just uninsert the bp_finish, and | |
3850 | let finish_command delete it. | |
3851 | ||
3852 | (We know the bp_finish is "doomed" in the sense that it's | |
3853 | momentary, and will be deleted as soon as finish_command sees | |
3854 | the inferior stopped. So it doesn't matter that the bp's | |
3855 | address is probably bogus in the new a.out, unlike e.g., the | |
3856 | solib breakpoints.) */ | |
3857 | ||
3858 | if (b->type == bp_finish) | |
3859 | { | |
3860 | continue; | |
3861 | } | |
3862 | ||
3863 | /* Without a symbolic address, we have little hope of the | |
3864 | pre-exec() address meaning the same thing in the post-exec() | |
3865 | a.out. */ | |
264f9890 | 3866 | if (breakpoint_location_spec_empty_p (b)) |
01add95b SM |
3867 | { |
3868 | delete_breakpoint (b); | |
3869 | continue; | |
3870 | } | |
3871 | } | |
c906108c SS |
3872 | } |
3873 | ||
3874 | int | |
d80ee84f | 3875 | detach_breakpoints (ptid_t ptid) |
c906108c | 3876 | { |
3a1bae8e | 3877 | int val = 0; |
2989a365 | 3878 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3879 | struct inferior *inf = current_inferior (); |
c5aa993b | 3880 | |
e99b03dc | 3881 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3882 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3883 | |
6c95b8df | 3884 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3885 | inferior_ptid = ptid; |
48d7020b | 3886 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3887 | { |
3888 | if (bl->pspace != inf->pspace) | |
3889 | continue; | |
3890 | ||
3891 | /* This function must physically remove breakpoints locations | |
3892 | from the specified ptid, without modifying the breakpoint | |
6e14e441 PA |
3893 | package's state. Locations of type bp_loc_other and |
3894 | bp_loc_software_watchpoint are only maintained at GDB side, | |
3895 | so there is no need to remove them. Moreover, removing these | |
01add95b | 3896 | would modify the breakpoint package's state. */ |
6e14e441 PA |
3897 | if (bl->loc_type == bp_loc_other |
3898 | || bl->loc_type == bp_loc_software_watchpoint) | |
01add95b SM |
3899 | continue; |
3900 | ||
3901 | if (bl->inserted) | |
3902 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3903 | } | |
d03285ec | 3904 | |
3a1bae8e | 3905 | return val; |
c906108c SS |
3906 | } |
3907 | ||
35df4500 | 3908 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3909 | Note that this is used to detach breakpoints from a child fork. |
3910 | When we get here, the child isn't in the inferior list, and neither | |
3911 | do we have objects to represent its address space --- we should | |
35df4500 | 3912 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3913 | |
c906108c | 3914 | static int |
b2b6a7da | 3915 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3916 | { |
3917 | int val; | |
c5aa993b | 3918 | |
35df4500 TJB |
3919 | /* BL is never in moribund_locations by our callers. */ |
3920 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3921 | |
74960c60 VP |
3922 | /* The type of none suggests that owner is actually deleted. |
3923 | This should not ever happen. */ | |
35df4500 | 3924 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3925 | |
35df4500 TJB |
3926 | if (bl->loc_type == bp_loc_software_breakpoint |
3927 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3928 | { |
c02f5703 MS |
3929 | /* "Normal" instruction breakpoint: either the standard |
3930 | trap-instruction bp (bp_breakpoint), or a | |
3931 | bp_hardware_breakpoint. */ | |
3932 | ||
3933 | /* First check to see if we have to handle an overlay. */ | |
3934 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3935 | || bl->section == NULL |
3936 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3937 | { |
3938 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3939 | |
3940 | /* If we're trying to uninsert a memory breakpoint that we | |
3941 | know is set in a dynamic object that is marked | |
3942 | shlib_disabled, then either the dynamic object was | |
3943 | removed with "remove-symbol-file" or with | |
3944 | "nosharedlibrary". In the former case, we don't know | |
3945 | whether another dynamic object might have loaded over the | |
3946 | breakpoint's address -- the user might well let us know | |
3947 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3948 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3949 | list of dynamically loaded objects). If we have the |
3950 | breakpoint's shadow memory, that is, this is a software | |
3951 | breakpoint managed by GDB, check whether the breakpoint | |
3952 | is still inserted in memory, to avoid overwriting wrong | |
3953 | code with stale saved shadow contents. Note that HW | |
3954 | breakpoints don't have shadow memory, as they're | |
3955 | implemented using a mechanism that is not dependent on | |
3956 | being able to modify the target's memory, and as such | |
3957 | they should always be removed. */ | |
3958 | if (bl->shlib_disabled | |
3959 | && bl->target_info.shadow_len != 0 | |
3960 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3961 | val = 0; | |
3962 | else | |
c47614fe | 3963 | val = bl->owner->remove_location (bl, reason); |
c02f5703 | 3964 | } |
c906108c SS |
3965 | else |
3966 | { | |
4a64f543 | 3967 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3968 | Did we set a breakpoint at the LMA? */ |
3969 | if (!overlay_events_enabled) | |
3970 | { | |
3971 | /* Yes -- overlay event support is not active, so we | |
3972 | should have set a breakpoint at the LMA. Remove it. | |
3973 | */ | |
c02f5703 MS |
3974 | /* Ignore any failures: if the LMA is in ROM, we will |
3975 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3976 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3977 | target_remove_hw_breakpoint (bl->gdbarch, | |
3978 | &bl->overlay_target_info); | |
c02f5703 | 3979 | else |
35df4500 | 3980 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3981 | &bl->overlay_target_info, |
3982 | reason); | |
c02f5703 MS |
3983 | } |
3984 | /* Did we set a breakpoint at the VMA? | |
3985 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3986 | if (bl->inserted) |
c906108c | 3987 | { |
c02f5703 MS |
3988 | /* Yes -- remove it. Previously we did not bother to |
3989 | remove the breakpoint if the section had been | |
3990 | unmapped, but let's not rely on that being safe. We | |
3991 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3992 | |
3993 | /* However, we should remove *software* breakpoints only | |
3994 | if the section is still mapped, or else we overwrite | |
3995 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3996 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3997 | || section_is_mapped (bl->section)) | |
c47614fe | 3998 | val = bl->owner->remove_location (bl, reason); |
aa67235e UW |
3999 | else |
4000 | val = 0; | |
c906108c | 4001 | } |
c02f5703 MS |
4002 | else |
4003 | { | |
4004 | /* No -- not inserted, so no need to remove. No error. */ | |
4005 | val = 0; | |
4006 | } | |
c906108c | 4007 | } |
879d1e6b | 4008 | |
08351840 PA |
4009 | /* In some cases, we might not be able to remove a breakpoint in |
4010 | a shared library that has already been removed, but we have | |
4011 | not yet processed the shlib unload event. Similarly for an | |
4012 | unloaded add-symbol-file object - the user might not yet have | |
4013 | had the chance to remove-symbol-file it. shlib_disabled will | |
4014 | be set if the library/object has already been removed, but | |
4015 | the breakpoint hasn't been uninserted yet, e.g., after | |
4016 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
4017 | always-inserted mode. */ | |
076855f9 | 4018 | if (val |
08351840 PA |
4019 | && (bl->loc_type == bp_loc_software_breakpoint |
4020 | && (bl->shlib_disabled | |
4021 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
4022 | || shared_objfile_contains_address_p (bl->pspace, |
4023 | bl->address)))) | |
879d1e6b UW |
4024 | val = 0; |
4025 | ||
c906108c SS |
4026 | if (val) |
4027 | return val; | |
b2b6a7da | 4028 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 4029 | } |
35df4500 | 4030 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4031 | { |
b2b6a7da | 4032 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c47614fe | 4033 | bl->owner->remove_location (bl, reason); |
2e70b7b9 | 4034 | |
c906108c | 4035 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 4036 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 4037 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4038 | bl->owner->number); |
c906108c | 4039 | } |
35df4500 | 4040 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
4041 | && breakpoint_enabled (bl->owner) |
4042 | && !bl->duplicate) | |
ce78b96d | 4043 | { |
c47614fe | 4044 | val = bl->owner->remove_location (bl, reason); |
ce78b96d JB |
4045 | if (val) |
4046 | return val; | |
77b06cd7 | 4047 | |
b2b6a7da | 4048 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 4049 | } |
c906108c SS |
4050 | |
4051 | return 0; | |
4052 | } | |
4053 | ||
6c95b8df | 4054 | static int |
834c0d03 | 4055 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 4056 | { |
35df4500 TJB |
4057 | /* BL is never in moribund_locations by our callers. */ |
4058 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4059 | |
6c95b8df PA |
4060 | /* The type of none suggests that owner is actually deleted. |
4061 | This should not ever happen. */ | |
35df4500 | 4062 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 4063 | |
5ed8105e | 4064 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 4065 | |
35df4500 | 4066 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4067 | |
5ed8105e | 4068 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4069 | } |
4070 | ||
c906108c SS |
4071 | /* Clear the "inserted" flag in all breakpoints. */ |
4072 | ||
25b22b0a | 4073 | void |
fba45db2 | 4074 | mark_breakpoints_out (void) |
c906108c | 4075 | { |
48d7020b | 4076 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 4077 | if (bl->pspace == current_program_space) |
35df4500 | 4078 | bl->inserted = 0; |
c906108c SS |
4079 | } |
4080 | ||
53a5351d JM |
4081 | /* Clear the "inserted" flag in all breakpoints and delete any |
4082 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4083 | |
4084 | Plus other such housekeeping that has to be done for breakpoints | |
4085 | between runs. | |
4086 | ||
53a5351d JM |
4087 | Note: this function gets called at the end of a run (by |
4088 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4089 | init_wait_for_inferior). */ |
c906108c SS |
4090 | |
4091 | ||
4092 | ||
4093 | void | |
fba45db2 | 4094 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4095 | { |
6c95b8df | 4096 | struct program_space *pspace = current_program_space; |
c906108c | 4097 | |
50c71eaf PA |
4098 | /* If breakpoint locations are shared across processes, then there's |
4099 | nothing to do. */ | |
f5656ead | 4100 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4101 | return; |
4102 | ||
1a853c52 | 4103 | mark_breakpoints_out (); |
075f6582 | 4104 | |
1428b37a | 4105 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
4106 | { |
4107 | if (b->loc && b->loc->pspace != pspace) | |
4108 | continue; | |
6c95b8df | 4109 | |
01add95b SM |
4110 | switch (b->type) |
4111 | { | |
4112 | case bp_call_dummy: | |
4113 | case bp_longjmp_call_dummy: | |
c906108c | 4114 | |
01add95b SM |
4115 | /* If the call dummy breakpoint is at the entry point it will |
4116 | cause problems when the inferior is rerun, so we better get | |
4117 | rid of it. */ | |
ab92d69b | 4118 | |
01add95b | 4119 | case bp_watchpoint_scope: |
ab92d69b | 4120 | |
01add95b | 4121 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 4122 | |
01add95b | 4123 | case bp_shlib_event: |
ab92d69b | 4124 | |
01add95b SM |
4125 | /* Also remove solib event breakpoints. Their addresses may |
4126 | have changed since the last time we ran the program. | |
4127 | Actually we may now be debugging against different target; | |
4128 | and so the solib backend that installed this breakpoint may | |
4129 | not be used in by the target. E.g., | |
ab92d69b | 4130 | |
01add95b SM |
4131 | (gdb) file prog-linux |
4132 | (gdb) run # native linux target | |
4133 | ... | |
4134 | (gdb) kill | |
4135 | (gdb) file prog-win.exe | |
4136 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4137 | */ | |
c906108c | 4138 | |
01add95b | 4139 | case bp_step_resume: |
f59f708a | 4140 | |
01add95b | 4141 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4142 | |
01add95b | 4143 | case bp_single_step: |
7c16b83e | 4144 | |
01add95b | 4145 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4146 | |
01add95b SM |
4147 | delete_breakpoint (b); |
4148 | break; | |
c906108c | 4149 | |
01add95b SM |
4150 | case bp_watchpoint: |
4151 | case bp_hardware_watchpoint: | |
4152 | case bp_read_watchpoint: | |
4153 | case bp_access_watchpoint: | |
4154 | { | |
4155 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4156 | |
01add95b SM |
4157 | /* Likewise for watchpoints on local expressions. */ |
4158 | if (w->exp_valid_block != NULL) | |
4159 | delete_breakpoint (b); | |
4160 | else | |
4161 | { | |
4162 | /* Get rid of existing locations, which are no longer | |
4163 | valid. New ones will be created in | |
4164 | update_watchpoint, when the inferior is restarted. | |
4165 | The next update_global_location_list call will | |
4166 | garbage collect them. */ | |
4167 | b->loc = NULL; | |
4168 | ||
4169 | if (context == inf_starting) | |
4170 | { | |
4171 | /* Reset val field to force reread of starting value in | |
4172 | insert_breakpoints. */ | |
4173 | w->val.reset (nullptr); | |
4174 | w->val_valid = false; | |
4175 | } | |
4176 | } | |
4177 | } | |
4178 | break; | |
4179 | default: | |
4180 | break; | |
3a5c3e22 | 4181 | } |
01add95b | 4182 | } |
1c5cfe86 PA |
4183 | |
4184 | /* Get rid of the moribund locations. */ | |
1123588c | 4185 | for (bp_location *bl : moribund_locations) |
35df4500 | 4186 | decref_bp_location (&bl); |
1123588c | 4187 | moribund_locations.clear (); |
c906108c SS |
4188 | } |
4189 | ||
6c95b8df PA |
4190 | /* These functions concern about actual breakpoints inserted in the |
4191 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4192 | we need to hop over the bkpt --- so we check for address space | |
4193 | match, not program space. */ | |
4194 | ||
c2c6d25f JM |
4195 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4196 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4197 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4198 | permanent breakpoint. | |
4199 | - When continuing from a location with an ordinary breakpoint, we | |
4200 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4201 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4202 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4203 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4204 | |
c2c6d25f | 4205 | enum breakpoint_here |
accd0bcd | 4206 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4207 | { |
d8de7963 | 4208 | bool any_breakpoint_here = false; |
c906108c | 4209 | |
48d7020b | 4210 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4211 | { |
35df4500 TJB |
4212 | if (bl->loc_type != bp_loc_software_breakpoint |
4213 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4214 | continue; |
4215 | ||
f1310107 | 4216 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4217 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4218 | || bl->permanent) |
f1310107 | 4219 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4220 | { |
4221 | if (overlay_debugging | |
35df4500 TJB |
4222 | && section_is_overlay (bl->section) |
4223 | && !section_is_mapped (bl->section)) | |
075f6582 | 4224 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4225 | else if (bl->permanent) |
075f6582 DJ |
4226 | return permanent_breakpoint_here; |
4227 | else | |
d8de7963 | 4228 | any_breakpoint_here = true; |
075f6582 DJ |
4229 | } |
4230 | } | |
c906108c | 4231 | |
f486487f | 4232 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4233 | } |
4234 | ||
d35ae833 PA |
4235 | /* See breakpoint.h. */ |
4236 | ||
4237 | int | |
accd0bcd | 4238 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4239 | CORE_ADDR addr, ULONGEST len) |
4240 | { | |
48d7020b | 4241 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4242 | { |
4243 | if (bl->loc_type != bp_loc_software_breakpoint | |
4244 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4245 | continue; | |
4246 | ||
4247 | if ((breakpoint_enabled (bl->owner) | |
4248 | || bl->permanent) | |
4249 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4250 | addr, len)) | |
4251 | { | |
4252 | if (overlay_debugging | |
4253 | && section_is_overlay (bl->section) | |
4254 | && !section_is_mapped (bl->section)) | |
4255 | { | |
4256 | /* Unmapped overlay -- can't be a match. */ | |
4257 | continue; | |
4258 | } | |
4259 | ||
4260 | return 1; | |
4261 | } | |
4262 | } | |
4263 | ||
4264 | return 0; | |
4265 | } | |
4266 | ||
1c5cfe86 PA |
4267 | /* Return true if there's a moribund breakpoint at PC. */ |
4268 | ||
4269 | int | |
accd0bcd | 4270 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4271 | { |
1123588c | 4272 | for (bp_location *loc : moribund_locations) |
f1310107 | 4273 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4274 | return 1; |
4275 | ||
4276 | return 0; | |
4277 | } | |
c2c6d25f | 4278 | |
d8de7963 | 4279 | /* Returns true iff BL is inserted at PC, in address space ASPACE. */ |
f7ce857f | 4280 | |
d8de7963 | 4281 | static bool |
b2ff9ed3 | 4282 | bp_location_inserted_here_p (const struct bp_location *bl, |
accd0bcd | 4283 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4284 | { |
4285 | if (bl->inserted | |
4286 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4287 | aspace, pc)) | |
4288 | { | |
d8de7963 AB |
4289 | /* An unmapped overlay can't be a match. */ |
4290 | return !(overlay_debugging | |
4291 | && section_is_overlay (bl->section) | |
4292 | && !section_is_mapped (bl->section)); | |
f7ce857f | 4293 | } |
d8de7963 | 4294 | return false; |
f7ce857f PA |
4295 | } |
4296 | ||
a1fd2fa5 | 4297 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4298 | |
4299 | int | |
accd0bcd | 4300 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4301 | { |
e0d9a270 | 4302 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4303 | { |
35df4500 TJB |
4304 | if (bl->loc_type != bp_loc_software_breakpoint |
4305 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4306 | continue; |
4307 | ||
f7ce857f PA |
4308 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4309 | return 1; | |
c5aa993b | 4310 | } |
c36b740a VP |
4311 | return 0; |
4312 | } | |
4313 | ||
a1fd2fa5 PA |
4314 | /* This function returns non-zero iff there is a software breakpoint |
4315 | inserted at PC. */ | |
c36b740a VP |
4316 | |
4317 | int | |
accd0bcd | 4318 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4319 | CORE_ADDR pc) |
4fa8626c | 4320 | { |
e0d9a270 | 4321 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4322 | { |
35df4500 | 4323 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4324 | continue; |
4325 | ||
f7ce857f PA |
4326 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4327 | return 1; | |
4fa8626c DJ |
4328 | } |
4329 | ||
4330 | return 0; | |
9c02b525 PA |
4331 | } |
4332 | ||
4333 | /* See breakpoint.h. */ | |
4334 | ||
4335 | int | |
accd0bcd | 4336 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4337 | CORE_ADDR pc) |
4338 | { | |
e0d9a270 | 4339 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4340 | { |
9c02b525 PA |
4341 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4342 | continue; | |
4343 | ||
4344 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4345 | return 1; | |
4346 | } | |
4347 | ||
4348 | return 0; | |
4fa8626c DJ |
4349 | } |
4350 | ||
9093389c | 4351 | int |
accd0bcd | 4352 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4353 | CORE_ADDR addr, ULONGEST len) |
4354 | { | |
43892fdf | 4355 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4356 | { |
9093389c PA |
4357 | if (bpt->type != bp_hardware_watchpoint |
4358 | && bpt->type != bp_access_watchpoint) | |
4359 | continue; | |
4360 | ||
4361 | if (!breakpoint_enabled (bpt)) | |
4362 | continue; | |
4363 | ||
40cb8ca5 | 4364 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4365 | if (loc->pspace->aspace == aspace && loc->inserted) |
4366 | { | |
4367 | CORE_ADDR l, h; | |
4368 | ||
4369 | /* Check for intersection. */ | |
768adc05 PA |
4370 | l = std::max<CORE_ADDR> (loc->address, addr); |
4371 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4372 | if (l < h) |
4373 | return 1; | |
4374 | } | |
4375 | } | |
4376 | return 0; | |
4377 | } | |
c5aa993b | 4378 | |
f2478a7e | 4379 | /* See breakpoint.h. */ |
c906108c | 4380 | |
f2478a7e SM |
4381 | bool |
4382 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4383 | { |
f2478a7e | 4384 | return (b->type == bp_catchpoint); |
c906108c SS |
4385 | } |
4386 | ||
c906108c SS |
4387 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4388 | Also free any storage that is part of a bpstat. */ | |
4389 | ||
4390 | void | |
313f3b21 | 4391 | bpstat_clear (bpstat **bsp) |
c906108c | 4392 | { |
313f3b21 SM |
4393 | bpstat *p; |
4394 | bpstat *q; | |
c906108c SS |
4395 | |
4396 | if (bsp == 0) | |
4397 | return; | |
4398 | p = *bsp; | |
4399 | while (p != NULL) | |
4400 | { | |
4401 | q = p->next; | |
04afa70c | 4402 | delete p; |
c906108c SS |
4403 | p = q; |
4404 | } | |
4405 | *bsp = NULL; | |
4406 | } | |
4407 | ||
313f3b21 | 4408 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4409 | : next (NULL), |
4410 | bp_location_at (other.bp_location_at), | |
4411 | breakpoint_at (other.breakpoint_at), | |
4412 | commands (other.commands), | |
04afa70c TT |
4413 | print (other.print), |
4414 | stop (other.stop), | |
4415 | print_it (other.print_it) | |
4416 | { | |
850645cf | 4417 | if (other.old_val != NULL) |
f28085df | 4418 | old_val = release_value (other.old_val->copy ()); |
04afa70c TT |
4419 | } |
4420 | ||
c906108c SS |
4421 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4422 | is part of the bpstat is copied as well. */ | |
4423 | ||
313f3b21 SM |
4424 | bpstat * |
4425 | bpstat_copy (bpstat *bs) | |
c906108c | 4426 | { |
313f3b21 SM |
4427 | bpstat *p = nullptr; |
4428 | bpstat *tmp; | |
4429 | bpstat *retval = nullptr; | |
c906108c SS |
4430 | |
4431 | if (bs == NULL) | |
4432 | return bs; | |
4433 | ||
4434 | for (; bs != NULL; bs = bs->next) | |
4435 | { | |
313f3b21 | 4436 | tmp = new bpstat (*bs); |
31cc81e9 | 4437 | |
c906108c SS |
4438 | if (p == NULL) |
4439 | /* This is the first thing in the chain. */ | |
4440 | retval = tmp; | |
4441 | else | |
4442 | p->next = tmp; | |
4443 | p = tmp; | |
4444 | } | |
4445 | p->next = NULL; | |
4446 | return retval; | |
4447 | } | |
4448 | ||
4a64f543 | 4449 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4450 | |
313f3b21 SM |
4451 | bpstat * |
4452 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4453 | { |
c5aa993b JM |
4454 | if (bsp == NULL) |
4455 | return NULL; | |
c906108c | 4456 | |
c5aa993b JM |
4457 | for (; bsp != NULL; bsp = bsp->next) |
4458 | { | |
f431efe5 | 4459 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4460 | return bsp; |
4461 | } | |
c906108c SS |
4462 | return NULL; |
4463 | } | |
4464 | ||
ab04a2af TT |
4465 | /* See breakpoint.h. */ |
4466 | ||
4c462cb0 | 4467 | bool |
313f3b21 | 4468 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4469 | { |
ab04a2af TT |
4470 | for (; bsp != NULL; bsp = bsp->next) |
4471 | { | |
427cd150 TT |
4472 | if (bsp->breakpoint_at == NULL) |
4473 | { | |
4474 | /* A moribund location can never explain a signal other than | |
4475 | GDB_SIGNAL_TRAP. */ | |
4476 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4477 | return true; |
427cd150 TT |
4478 | } |
4479 | else | |
47591c29 | 4480 | { |
c47614fe | 4481 | if (bsp->breakpoint_at->explains_signal (sig)) |
4c462cb0 | 4482 | return true; |
47591c29 | 4483 | } |
ab04a2af TT |
4484 | } |
4485 | ||
4c462cb0 | 4486 | return false; |
ab04a2af TT |
4487 | } |
4488 | ||
78805ff8 | 4489 | /* See breakpoint.h. */ |
c906108c SS |
4490 | |
4491 | int | |
313f3b21 | 4492 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4493 | { |
4494 | struct breakpoint *b; | |
4495 | ||
4496 | if ((*bsp) == NULL) | |
4497 | return 0; /* No more breakpoint values */ | |
8671a17b | 4498 | |
4a64f543 MS |
4499 | /* We assume we'll never have several bpstats that correspond to a |
4500 | single breakpoint -- otherwise, this function might return the | |
4501 | same number more than once and this will look ugly. */ | |
f431efe5 | 4502 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4503 | *bsp = (*bsp)->next; |
4504 | if (b == NULL) | |
4505 | return -1; /* breakpoint that's been deleted since */ | |
4506 | ||
4507 | *num = b->number; /* We have its number */ | |
4508 | return 1; | |
c906108c SS |
4509 | } |
4510 | ||
78805ff8 PW |
4511 | /* See breakpoint.h */ |
4512 | ||
4513 | int | |
4514 | bpstat_locno (const bpstat *bs) | |
4515 | { | |
4516 | const struct breakpoint *b = bs->breakpoint_at; | |
4517 | const struct bp_location *bl = bs->bp_location_at.get (); | |
4518 | ||
4519 | int locno = 0; | |
4520 | ||
28a072f4 | 4521 | if (b != nullptr && b->loc != nullptr && b->loc->next != nullptr) |
78805ff8 PW |
4522 | { |
4523 | const bp_location *bl_i; | |
4524 | ||
4525 | for (bl_i = b->loc; | |
4526 | bl_i != bl && bl_i->next != nullptr; | |
4527 | bl_i = bl_i->next) | |
4528 | locno++; | |
4529 | ||
4530 | if (bl_i == bl) | |
4531 | locno++; | |
4532 | else | |
4533 | { | |
4534 | warning (_("location number not found for breakpoint %d address %s."), | |
4535 | b->number, paddress (bl->gdbarch, bl->address)); | |
4536 | locno = 0; | |
4537 | } | |
4538 | } | |
4539 | ||
4540 | return locno; | |
4541 | } | |
4542 | ||
4543 | /* See breakpoint.h. */ | |
4544 | ||
4545 | void | |
4546 | print_num_locno (const bpstat *bs, struct ui_out *uiout) | |
4547 | { | |
4548 | struct breakpoint *b = bs->breakpoint_at; | |
4549 | ||
4550 | if (b == nullptr) | |
4551 | uiout->text (_("deleted breakpoint")); | |
4552 | else | |
4553 | { | |
4554 | uiout->field_signed ("bkptno", b->number); | |
4555 | ||
4556 | int locno = bpstat_locno (bs); | |
4557 | if (locno != 0) | |
4558 | uiout->message (".%pF", signed_field ("locno", locno)); | |
4559 | } | |
4560 | } | |
4561 | ||
e93ca019 | 4562 | /* See breakpoint.h. */ |
c906108c SS |
4563 | |
4564 | void | |
e93ca019 | 4565 | bpstat_clear_actions (void) |
c906108c | 4566 | { |
313f3b21 | 4567 | bpstat *bs; |
e93ca019 | 4568 | |
00431a78 | 4569 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4570 | return; |
4571 | ||
00431a78 | 4572 | thread_info *tp = inferior_thread (); |
e93ca019 | 4573 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4574 | { |
d1b0a7bf | 4575 | bs->commands = NULL; |
850645cf | 4576 | bs->old_val.reset (nullptr); |
c906108c SS |
4577 | } |
4578 | } | |
4579 | ||
f3b1572e PA |
4580 | /* Called when a command is about to proceed the inferior. */ |
4581 | ||
4582 | static void | |
4583 | breakpoint_about_to_proceed (void) | |
4584 | { | |
d7e15655 | 4585 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4586 | { |
4587 | struct thread_info *tp = inferior_thread (); | |
4588 | ||
4589 | /* Allow inferior function calls in breakpoint commands to not | |
4590 | interrupt the command list. When the call finishes | |
4591 | successfully, the inferior will be standing at the same | |
4592 | breakpoint as if nothing happened. */ | |
16c381f0 | 4593 | if (tp->control.in_infcall) |
f3b1572e PA |
4594 | return; |
4595 | } | |
4596 | ||
4597 | breakpoint_proceeded = 1; | |
4598 | } | |
4599 | ||
d8de7963 | 4600 | /* Return true iff CMD as the first line of a command sequence is `silent' |
abf85f46 JK |
4601 | or its equivalent. */ |
4602 | ||
d8de7963 | 4603 | static bool |
abf85f46 JK |
4604 | command_line_is_silent (struct command_line *cmd) |
4605 | { | |
4f45d445 | 4606 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4607 | } |
4608 | ||
83f35083 PW |
4609 | /* Sets the $_hit_bpnum and $_hit_locno to bpnum and locno. |
4610 | A locno 0 is changed to 1 to e.g. let the user do | |
4611 | (gdb) disable $_hit_bpnum.$_hit_locno | |
4612 | for a single location breakpoint. */ | |
4613 | ||
78805ff8 | 4614 | static void |
83f35083 | 4615 | set_hit_convenience_vars (int bpnum, int locno) |
78805ff8 | 4616 | { |
83f35083 PW |
4617 | set_internalvar_integer (lookup_internalvar ("_hit_bpnum"), bpnum); |
4618 | set_internalvar_integer (lookup_internalvar ("_hit_locno"), | |
4619 | (locno > 0 ? locno : 1)); | |
78805ff8 PW |
4620 | } |
4621 | ||
4a64f543 MS |
4622 | /* Execute all the commands associated with all the breakpoints at |
4623 | this location. Any of these commands could cause the process to | |
4624 | proceed beyond this point, etc. We look out for such changes by | |
4625 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4626 | |
347bddb7 PA |
4627 | Returns true if a breakpoint command resumed the inferior. In that |
4628 | case, it is the caller's responsibility to recall it again with the | |
4629 | bpstat of the current thread. */ | |
4630 | ||
d8de7963 | 4631 | static bool |
313f3b21 | 4632 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4633 | { |
313f3b21 | 4634 | bpstat *bs; |
d8de7963 | 4635 | bool again = false; |
c906108c SS |
4636 | |
4637 | /* Avoid endless recursion if a `source' command is contained | |
4638 | in bs->commands. */ | |
4639 | if (executing_breakpoint_commands) | |
d8de7963 | 4640 | return false; |
c906108c | 4641 | |
81b1e71c TT |
4642 | scoped_restore save_executing |
4643 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4644 | |
1ac32117 | 4645 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4646 | |
4a64f543 | 4647 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4648 | bs = *bsp; |
4649 | ||
78805ff8 | 4650 | /* The $_hit_* convenience variables are set before running the |
83f35083 PW |
4651 | commands of BS. In case we have several bs, after the loop, |
4652 | we set again the variables to the first printed bpnum and locno. | |
4653 | For multiple breakpoints, this ensures the variables are set to the | |
4654 | breakpoint printed for the user. */ | |
4655 | int printed_hit_bpnum = -1; | |
4656 | int printed_hit_locno = -1; | |
78805ff8 | 4657 | |
c906108c SS |
4658 | breakpoint_proceeded = 0; |
4659 | for (; bs != NULL; bs = bs->next) | |
4660 | { | |
d1b0a7bf | 4661 | struct command_line *cmd = NULL; |
6c50ab1c | 4662 | |
83f35083 PW |
4663 | /* Set the _hit_* convenience variables before running BS's commands. */ |
4664 | { | |
4665 | const struct breakpoint *b = bs->breakpoint_at; | |
4666 | if (b != nullptr) | |
4667 | { | |
4668 | int locno = bpstat_locno (bs); | |
4669 | ||
4670 | set_hit_convenience_vars (b->number, locno); | |
4671 | if (printed_hit_locno == -1 && bs->print) | |
4672 | { | |
4673 | printed_hit_bpnum = b->number; | |
4674 | printed_hit_locno = locno; | |
4675 | } | |
4676 | } | |
4677 | } | |
78805ff8 | 4678 | |
6c50ab1c JB |
4679 | /* Take ownership of the BSP's command tree, if it has one. |
4680 | ||
dda83cd7 SM |
4681 | The command tree could legitimately contain commands like |
4682 | 'step' and 'next', which call clear_proceed_status, which | |
83f35083 | 4683 | frees the bpstat BS and its command tree. To make sure this doesn't |
dda83cd7 SM |
4684 | free the tree we're executing out from under us, we need to |
4685 | take ownership of the tree ourselves. Since a given bpstat's | |
4686 | commands are only executed once, we don't need to copy it; we | |
4687 | can clear the pointer in the bpstat, and make sure we free | |
4688 | the tree when we're done. */ | |
d1b0a7bf | 4689 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4690 | bs->commands = NULL; |
d1b0a7bf TT |
4691 | if (ccmd != NULL) |
4692 | cmd = ccmd.get (); | |
abf85f46 JK |
4693 | if (command_line_is_silent (cmd)) |
4694 | { | |
4695 | /* The action has been already done by bpstat_stop_status. */ | |
4696 | cmd = cmd->next; | |
4697 | } | |
6c50ab1c | 4698 | |
c906108c SS |
4699 | while (cmd != NULL) |
4700 | { | |
4701 | execute_control_command (cmd); | |
83f35083 PW |
4702 | /* After execute_control_command, if breakpoint_proceeded is true, |
4703 | BS has been freed and cannot be accessed anymore. */ | |
c906108c SS |
4704 | |
4705 | if (breakpoint_proceeded) | |
4706 | break; | |
4707 | else | |
4708 | cmd = cmd->next; | |
4709 | } | |
6c50ab1c | 4710 | |
c906108c | 4711 | if (breakpoint_proceeded) |
32c1e744 | 4712 | { |
cb814510 | 4713 | if (current_ui->async) |
347bddb7 PA |
4714 | /* If we are in async mode, then the target might be still |
4715 | running, not stopped at any breakpoint, so nothing for | |
4716 | us to do here -- just return to the event loop. */ | |
4717 | ; | |
32c1e744 VP |
4718 | else |
4719 | /* In sync mode, when execute_control_command returns | |
4720 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4721 | Breakpoint commands for that stop were not run, since |
4722 | execute_command does not run breakpoint commands -- | |
4723 | only command_line_handler does, but that one is not | |
4724 | involved in execution of breakpoint commands. So, we | |
4725 | can now execute breakpoint commands. It should be | |
4726 | noted that making execute_command do bpstat actions is | |
4727 | not an option -- in this case we'll have recursive | |
4728 | invocation of bpstat for each breakpoint with a | |
4729 | command, and can easily blow up GDB stack. Instead, we | |
4730 | return true, which will trigger the caller to recall us | |
4731 | with the new stop_bpstat. */ | |
d8de7963 | 4732 | again = true; |
347bddb7 | 4733 | break; |
32c1e744 | 4734 | } |
c906108c | 4735 | } |
78805ff8 PW |
4736 | |
4737 | /* Now that we have executed the commands of all bs, set the _hit_* | |
83f35083 PW |
4738 | convenience variables to the printed values. */ |
4739 | if (printed_hit_locno != -1) | |
4740 | set_hit_convenience_vars (printed_hit_bpnum, printed_hit_locno); | |
78805ff8 | 4741 | |
347bddb7 PA |
4742 | return again; |
4743 | } | |
4744 | ||
00431a78 PA |
4745 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4746 | one, is alive and has execution. Return NULL otherwise. */ | |
4747 | ||
4748 | static thread_info * | |
4749 | get_bpstat_thread () | |
4750 | { | |
55f6301a | 4751 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4752 | return NULL; |
4753 | ||
4754 | thread_info *tp = inferior_thread (); | |
611841bb | 4755 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4756 | return NULL; |
4757 | return tp; | |
4758 | } | |
4759 | ||
347bddb7 PA |
4760 | void |
4761 | bpstat_do_actions (void) | |
4762 | { | |
694c6bf5 | 4763 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4764 | thread_info *tp; |
353d1d73 | 4765 | |
347bddb7 | 4766 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4767 | while ((tp = get_bpstat_thread ()) != NULL) |
4768 | { | |
4769 | /* Since in sync mode, bpstat_do_actions may resume the | |
4770 | inferior, and only return when it is stopped at the next | |
4771 | breakpoint, we keep doing breakpoint actions until it returns | |
4772 | false to indicate the inferior was not resumed. */ | |
4773 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4774 | break; | |
4775 | } | |
353d1d73 | 4776 | |
694c6bf5 | 4777 | cleanup_if_error.release (); |
c906108c SS |
4778 | } |
4779 | ||
fa4727a6 DJ |
4780 | /* Print out the (old or new) value associated with a watchpoint. */ |
4781 | ||
4782 | static void | |
4783 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4784 | { | |
4785 | if (val == NULL) | |
7f6aba03 | 4786 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4787 | else |
79a45b7d TT |
4788 | { |
4789 | struct value_print_options opts; | |
4790 | get_user_print_options (&opts); | |
4791 | value_print (val, stream, &opts); | |
4792 | } | |
fa4727a6 DJ |
4793 | } |
4794 | ||
f303dbd6 PA |
4795 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4796 | debugging multiple threads. */ | |
4797 | ||
4798 | void | |
4799 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4800 | { | |
112e8700 | 4801 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4802 | return; |
4803 | ||
112e8700 | 4804 | uiout->text ("\n"); |
f303dbd6 PA |
4805 | |
4806 | if (show_thread_that_caused_stop ()) | |
4807 | { | |
f303dbd6 PA |
4808 | struct thread_info *thr = inferior_thread (); |
4809 | ||
112e8700 | 4810 | uiout->text ("Thread "); |
33eca680 | 4811 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4812 | |
25558938 | 4813 | const char *name = thread_name (thr); |
f303dbd6 PA |
4814 | if (name != NULL) |
4815 | { | |
112e8700 | 4816 | uiout->text (" \""); |
33eca680 | 4817 | uiout->field_string ("name", name); |
112e8700 | 4818 | uiout->text ("\""); |
f303dbd6 PA |
4819 | } |
4820 | ||
112e8700 | 4821 | uiout->text (" hit "); |
f303dbd6 PA |
4822 | } |
4823 | } | |
4824 | ||
e514a9d6 | 4825 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4826 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4827 | 'print_it' in the bpstat structure. Under some circumstances we |
4828 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4829 | normal_stop(). */ |
e514a9d6 JM |
4830 | |
4831 | static enum print_stop_action | |
313f3b21 | 4832 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4833 | { |
4834 | switch (bs->print_it) | |
4835 | { | |
4836 | case print_it_noop: | |
4a64f543 | 4837 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4838 | return PRINT_UNKNOWN; |
4839 | break; | |
4840 | ||
4841 | case print_it_done: | |
4842 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4843 | relevant messages. */ |
e514a9d6 JM |
4844 | return PRINT_SRC_AND_LOC; |
4845 | break; | |
4846 | ||
4847 | case print_it_normal: | |
4f8d1dc6 | 4848 | { |
f431efe5 PA |
4849 | struct breakpoint *b = bs->breakpoint_at; |
4850 | ||
1a6a67de TJB |
4851 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4852 | which has since been deleted. */ | |
4853 | if (b == NULL) | |
4854 | return PRINT_UNKNOWN; | |
4855 | ||
348d480f | 4856 | /* Normal case. Call the breakpoint's print_it method. */ |
c47614fe | 4857 | return b->print_it (bs); |
4f8d1dc6 | 4858 | } |
348d480f | 4859 | break; |
3086aeae | 4860 | |
e514a9d6 | 4861 | default: |
f34652de | 4862 | internal_error (_("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4863 | break; |
c906108c | 4864 | } |
c906108c SS |
4865 | } |
4866 | ||
2f9ee862 | 4867 | /* See breakpoint.h. */ |
edcc5120 | 4868 | |
2f9ee862 | 4869 | void |
4e9e993a | 4870 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4871 | { |
6fb16ce6 | 4872 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4873 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4874 | |
4875 | if (!is_catchpoint) | |
4876 | { | |
4877 | if (any_added || any_deleted) | |
112e8700 | 4878 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4879 | else |
112e8700 SM |
4880 | current_uiout->text (_("Stopped due to shared library event (no " |
4881 | "libraries added or removed)\n")); | |
edcc5120 TT |
4882 | } |
4883 | ||
112e8700 SM |
4884 | if (current_uiout->is_mi_like_p ()) |
4885 | current_uiout->field_string ("reason", | |
4886 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4887 | |
4888 | if (any_deleted) | |
4889 | { | |
112e8700 | 4890 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4891 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4892 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4893 | { |
6fb16ce6 SM |
4894 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4895 | ||
edcc5120 | 4896 | if (ix > 0) |
112e8700 SM |
4897 | current_uiout->text (" "); |
4898 | current_uiout->field_string ("library", name); | |
4899 | current_uiout->text ("\n"); | |
edcc5120 | 4900 | } |
edcc5120 TT |
4901 | } |
4902 | ||
4903 | if (any_added) | |
4904 | { | |
112e8700 | 4905 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4906 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4907 | bool first = true; |
52941706 | 4908 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4909 | { |
bcb430e4 | 4910 | if (!first) |
112e8700 | 4911 | current_uiout->text (" "); |
bcb430e4 | 4912 | first = false; |
112e8700 SM |
4913 | current_uiout->field_string ("library", iter->so_name); |
4914 | current_uiout->text ("\n"); | |
edcc5120 | 4915 | } |
edcc5120 TT |
4916 | } |
4917 | } | |
4918 | ||
e514a9d6 JM |
4919 | /* Print a message indicating what happened. This is called from |
4920 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4921 | list - a list of the eventpoints that caused this stop. KIND is |
4922 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4923 | routine calls the generic print routine for printing a message |
4924 | about reasons for stopping. This will print (for example) the | |
4925 | "Breakpoint n," part of the output. The return value of this | |
4926 | routine is one of: | |
c906108c | 4927 | |
4a64f543 | 4928 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4929 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4930 | code to print the location. An example is |
c5aa993b JM |
4931 | "Breakpoint 1, " which should be followed by |
4932 | the location. | |
917317f4 | 4933 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4934 | to also print the location part of the message. |
4935 | An example is the catch/throw messages, which | |
4a64f543 | 4936 | don't require a location appended to the end. |
917317f4 | 4937 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4938 | further info to be printed. */ |
c906108c | 4939 | |
917317f4 | 4940 | enum print_stop_action |
403c71fd | 4941 | bpstat_print (bpstat *bs, target_waitkind kind) |
c906108c | 4942 | { |
f486487f | 4943 | enum print_stop_action val; |
c5aa993b | 4944 | |
c906108c | 4945 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4946 | (Currently all watchpoints go on the bpstat whether hit or not. |
4947 | That probably could (should) be changed, provided care is taken | |
c906108c | 4948 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4949 | for (; bs; bs = bs->next) |
4950 | { | |
4951 | val = print_bp_stop_message (bs); | |
4952 | if (val == PRINT_SRC_ONLY | |
78805ff8 | 4953 | || val == PRINT_SRC_AND_LOC |
e514a9d6 JM |
4954 | || val == PRINT_NOTHING) |
4955 | return val; | |
4956 | } | |
c906108c | 4957 | |
36dfb11c TT |
4958 | /* If we had hit a shared library event breakpoint, |
4959 | print_bp_stop_message would print out this message. If we hit an | |
4960 | OS-level shared library event, do the same thing. */ | |
4961 | if (kind == TARGET_WAITKIND_LOADED) | |
4962 | { | |
4e9e993a | 4963 | print_solib_event (false); |
36dfb11c TT |
4964 | return PRINT_NOTHING; |
4965 | } | |
4966 | ||
e514a9d6 | 4967 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4968 | with and nothing was printed. */ |
917317f4 | 4969 | return PRINT_UNKNOWN; |
c906108c SS |
4970 | } |
4971 | ||
bf469271 | 4972 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4973 | |
bf469271 PA |
4974 | static bool |
4975 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4976 | { |
65558ca5 TT |
4977 | scoped_value_mark mark; |
4978 | return value_true (evaluate_expression (exp)); | |
c906108c SS |
4979 | } |
4980 | ||
5760d0ab | 4981 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4982 | |
313f3b21 | 4983 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4984 | : next (NULL), |
b6433ede | 4985 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4986 | breakpoint_at (bl->owner), |
4987 | commands (NULL), | |
04afa70c TT |
4988 | print (0), |
4989 | stop (0), | |
4990 | print_it (print_it_normal) | |
c906108c | 4991 | { |
04afa70c TT |
4992 | **bs_link_pointer = this; |
4993 | *bs_link_pointer = &next; | |
4994 | } | |
4995 | ||
313f3b21 | 4996 | bpstat::bpstat () |
04afa70c | 4997 | : next (NULL), |
04afa70c TT |
4998 | breakpoint_at (NULL), |
4999 | commands (NULL), | |
04afa70c TT |
5000 | print (0), |
5001 | stop (0), | |
5002 | print_it (print_it_normal) | |
5003 | { | |
c906108c SS |
5004 | } |
5005 | \f | |
d983da9c DJ |
5006 | /* The target has stopped with waitstatus WS. Check if any hardware |
5007 | watchpoints have triggered, according to the target. */ | |
5008 | ||
5009 | int | |
c272a98c | 5010 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 5011 | { |
57810aa7 | 5012 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 5013 | CORE_ADDR addr; |
d983da9c DJ |
5014 | |
5015 | if (!stopped_by_watchpoint) | |
5016 | { | |
5017 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
5018 | as not triggered. */ | |
43892fdf | 5019 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5020 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5021 | { |
5022 | struct watchpoint *w = (struct watchpoint *) b; | |
5023 | ||
5024 | w->watchpoint_triggered = watch_triggered_no; | |
5025 | } | |
d983da9c DJ |
5026 | |
5027 | return 0; | |
5028 | } | |
5029 | ||
328d42d8 | 5030 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
5031 | { |
5032 | /* We were stopped by a watchpoint, but we don't know where. | |
5033 | Mark all watchpoints as unknown. */ | |
43892fdf | 5034 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5035 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5036 | { |
5037 | struct watchpoint *w = (struct watchpoint *) b; | |
5038 | ||
5039 | w->watchpoint_triggered = watch_triggered_unknown; | |
5040 | } | |
d983da9c | 5041 | |
3c4797ba | 5042 | return 1; |
d983da9c DJ |
5043 | } |
5044 | ||
5045 | /* The target could report the data address. Mark watchpoints | |
5046 | affected by this data address as triggered, and all others as not | |
5047 | triggered. */ | |
5048 | ||
43892fdf | 5049 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5050 | if (is_hardware_watchpoint (b)) |
d983da9c | 5051 | { |
3a5c3e22 | 5052 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 5053 | |
3a5c3e22 | 5054 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 5055 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 5056 | { |
3a5c3e22 | 5057 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 5058 | { |
3a5c3e22 PA |
5059 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
5060 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
5061 | |
5062 | if (newaddr == start) | |
5063 | { | |
3a5c3e22 | 5064 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5065 | break; |
5066 | } | |
5067 | } | |
5068 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
5069 | else if (target_watchpoint_addr_within_range |
5070 | (current_inferior ()->top_target (), addr, loc->address, | |
5071 | loc->length)) | |
9c06b0b4 | 5072 | { |
3a5c3e22 | 5073 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5074 | break; |
5075 | } | |
5076 | } | |
d983da9c DJ |
5077 | } |
5078 | ||
5079 | return 1; | |
5080 | } | |
5081 | ||
bf469271 PA |
5082 | /* Possible return values for watchpoint_check. */ |
5083 | enum wp_check_result | |
5084 | { | |
5085 | /* The watchpoint has been deleted. */ | |
5086 | WP_DELETED = 1, | |
5087 | ||
5088 | /* The value has changed. */ | |
5089 | WP_VALUE_CHANGED = 2, | |
5090 | ||
5091 | /* The value has not changed. */ | |
5092 | WP_VALUE_NOT_CHANGED = 3, | |
5093 | ||
5094 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
5095 | WP_IGNORE = 4, | |
5096 | }; | |
c906108c SS |
5097 | |
5098 | #define BP_TEMPFLAG 1 | |
5099 | #define BP_HARDWAREFLAG 2 | |
5100 | ||
4a64f543 | 5101 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 5102 | changed. */ |
553e4c11 | 5103 | |
bf469271 | 5104 | static wp_check_result |
313f3b21 | 5105 | watchpoint_check (bpstat *bs) |
c906108c | 5106 | { |
3a5c3e22 | 5107 | struct watchpoint *b; |
bd2b40ac | 5108 | frame_info_ptr fr; |
d8de7963 | 5109 | bool within_current_scope; |
c906108c | 5110 | |
f431efe5 | 5111 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5112 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5113 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5114 | |
f6bc2008 PA |
5115 | /* If this is a local watchpoint, we only want to check if the |
5116 | watchpoint frame is in scope if the current thread is the thread | |
5117 | that was used to create the watchpoint. */ | |
5118 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5119 | return WP_IGNORE; |
f6bc2008 | 5120 | |
c906108c | 5121 | if (b->exp_valid_block == NULL) |
d8de7963 | 5122 | within_current_scope = true; |
c906108c SS |
5123 | else |
5124 | { | |
bd2b40ac | 5125 | frame_info_ptr frame = get_current_frame (); |
edb3359d DJ |
5126 | struct gdbarch *frame_arch = get_frame_arch (frame); |
5127 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5128 | ||
c9cf6e20 | 5129 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5130 | still in the function but the stack frame has already been |
5131 | invalidated. Since we can't rely on the values of local | |
5132 | variables after the stack has been destroyed, we are treating | |
5133 | the watchpoint in that state as `not changed' without further | |
5134 | checking. Don't mark watchpoints as changed if the current | |
5135 | frame is in an epilogue - even if they are in some other | |
5136 | frame, our view of the stack is likely to be wrong and | |
5137 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5138 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5139 | return WP_IGNORE; |
a0f49112 | 5140 | |
101dcfbe | 5141 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5142 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5143 | |
5144 | /* If we've gotten confused in the unwinder, we might have | |
5145 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5146 | if (within_current_scope) |
5147 | { | |
5148 | struct symbol *function; | |
5149 | ||
5150 | function = get_frame_function (fr); | |
5151 | if (function == NULL | |
4aeddc50 | 5152 | || !contained_in (b->exp_valid_block, function->value_block ())) |
d8de7963 | 5153 | within_current_scope = false; |
edb3359d | 5154 | } |
69fbadd5 | 5155 | |
edb3359d | 5156 | if (within_current_scope) |
c906108c SS |
5157 | /* If we end up stopping, the current frame will get selected |
5158 | in normal_stop. So this call to select_frame won't affect | |
5159 | the user. */ | |
0f7d239c | 5160 | select_frame (fr); |
c906108c | 5161 | } |
c5aa993b | 5162 | |
c906108c SS |
5163 | if (within_current_scope) |
5164 | { | |
4a64f543 | 5165 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
5166 | time before we return to the command level and call |
5167 | free_all_values. We can't call free_all_values because we | |
5168 | might be in the middle of evaluating a function call. */ | |
c906108c | 5169 | |
9c06b0b4 | 5170 | struct value *mark; |
fa4727a6 DJ |
5171 | struct value *new_val; |
5172 | ||
c1fc2657 | 5173 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5174 | /* Since we don't know the exact trigger address (from |
5175 | stopped_data_address), just tell the user we've triggered | |
5176 | a mask watchpoint. */ | |
5177 | return WP_VALUE_CHANGED; | |
5178 | ||
5179 | mark = value_mark (); | |
1eaebe02 | 5180 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 5181 | NULL, NULL, false); |
218d2fc6 | 5182 | |
bb9d5f81 PP |
5183 | if (b->val_bitsize != 0) |
5184 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5185 | ||
4a64f543 MS |
5186 | /* We use value_equal_contents instead of value_equal because |
5187 | the latter coerces an array to a pointer, thus comparing just | |
5188 | the address of the array instead of its contents. This is | |
5189 | not what we want. */ | |
fa4727a6 | 5190 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
5191 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
5192 | new_val))) | |
c906108c | 5193 | { |
c906108c | 5194 | bs->old_val = b->val; |
850645cf | 5195 | b->val = release_value (new_val); |
4c1d86d9 | 5196 | b->val_valid = true; |
850645cf TT |
5197 | if (new_val != NULL) |
5198 | value_free_to_mark (mark); | |
c906108c SS |
5199 | return WP_VALUE_CHANGED; |
5200 | } | |
5201 | else | |
5202 | { | |
60e1c644 | 5203 | /* Nothing changed. */ |
c906108c | 5204 | value_free_to_mark (mark); |
c906108c SS |
5205 | return WP_VALUE_NOT_CHANGED; |
5206 | } | |
5207 | } | |
5208 | else | |
5209 | { | |
5210 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
5211 | if we temporarily ignored the watchpoint, then when |
5212 | we reenter the block in which it is valid it contains | |
5213 | garbage (in the case of a function, it may have two | |
5214 | garbage values, one before and one after the prologue). | |
5215 | So we can't even detect the first assignment to it and | |
5216 | watch after that (since the garbage may or may not equal | |
5217 | the first value assigned). */ | |
348d480f | 5218 | /* We print all the stop information in |
c47614fe TT |
5219 | breakpointprint_it, but in this case, by the time we |
5220 | call breakpoint->print_it this bp will be deleted | |
348d480f PA |
5221 | already. So we have no choice but print the information |
5222 | here. */ | |
468afe6c | 5223 | |
0e454242 | 5224 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5225 | { |
468afe6c PA |
5226 | struct ui_out *uiout = current_uiout; |
5227 | ||
112e8700 SM |
5228 | if (uiout->is_mi_like_p ()) |
5229 | uiout->field_string | |
5230 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5231 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5232 | "left the block in\n" | |
5233 | "which its expression is valid.\n", | |
5234 | signed_field ("wpnum", b->number)); | |
468afe6c | 5235 | } |
4ce44c66 | 5236 | |
cdac0397 | 5237 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5238 | b->commands = NULL; |
d0fb5eae | 5239 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5240 | |
5241 | return WP_DELETED; | |
5242 | } | |
5243 | } | |
5244 | ||
18a18393 | 5245 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5246 | breakpoint location BL. This function does not check if we should |
5247 | stop, only if BL explains the stop. */ | |
5248 | ||
d8de7963 | 5249 | static bool |
6c95b8df | 5250 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5251 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5252 | const target_waitstatus &ws) |
18a18393 VP |
5253 | { |
5254 | struct breakpoint *b = bl->owner; | |
5255 | ||
348d480f | 5256 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5257 | gdb_assert (b != NULL); |
5258 | ||
c47614fe | 5259 | return b->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5260 | } |
5261 | ||
3a5c3e22 | 5262 | /* Determine if the watched values have actually changed, and we |
4ec2227a | 5263 | should stop. If not, set BS->stop to false. */ |
3a5c3e22 | 5264 | |
18a18393 | 5265 | static void |
313f3b21 | 5266 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5267 | { |
2bdf28a0 | 5268 | const struct bp_location *bl; |
3a5c3e22 | 5269 | struct watchpoint *b; |
2bdf28a0 JK |
5270 | |
5271 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5272 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5273 | gdb_assert (bl != NULL); |
3a5c3e22 | 5274 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5275 | gdb_assert (b != NULL); |
18a18393 | 5276 | |
18a18393 | 5277 | { |
d8de7963 AB |
5278 | bool must_check_value = false; |
5279 | ||
c1fc2657 | 5280 | if (b->type == bp_watchpoint) |
18a18393 VP |
5281 | /* For a software watchpoint, we must always check the |
5282 | watched value. */ | |
d8de7963 | 5283 | must_check_value = true; |
18a18393 VP |
5284 | else if (b->watchpoint_triggered == watch_triggered_yes) |
5285 | /* We have a hardware watchpoint (read, write, or access) | |
5286 | and the target earlier reported an address watched by | |
5287 | this watchpoint. */ | |
d8de7963 | 5288 | must_check_value = true; |
18a18393 | 5289 | else if (b->watchpoint_triggered == watch_triggered_unknown |
c1fc2657 | 5290 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5291 | /* We were stopped by a hardware watchpoint, but the target could |
5292 | not report the data address. We must check the watchpoint's | |
5293 | value. Access and read watchpoints are out of luck; without | |
5294 | a data address, we can't figure it out. */ | |
d8de7963 | 5295 | must_check_value = true; |
3a5c3e22 | 5296 | |
18a18393 VP |
5297 | if (must_check_value) |
5298 | { | |
bf469271 PA |
5299 | wp_check_result e; |
5300 | ||
a70b8144 | 5301 | try |
bf469271 PA |
5302 | { |
5303 | e = watchpoint_check (bs); | |
5304 | } | |
230d2906 | 5305 | catch (const gdb_exception &ex) |
bf469271 PA |
5306 | { |
5307 | exception_fprintf (gdb_stderr, ex, | |
5308 | "Error evaluating expression " | |
5309 | "for watchpoint %d\n", | |
5310 | b->number); | |
5311 | ||
5312 | SWITCH_THRU_ALL_UIS () | |
5313 | { | |
6cb06a8c TT |
5314 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5315 | b->number); | |
bf469271 PA |
5316 | } |
5317 | watchpoint_del_at_next_stop (b); | |
5318 | e = WP_DELETED; | |
5319 | } | |
bf469271 | 5320 | |
18a18393 VP |
5321 | switch (e) |
5322 | { | |
5323 | case WP_DELETED: | |
5324 | /* We've already printed what needs to be printed. */ | |
5325 | bs->print_it = print_it_done; | |
5326 | /* Stop. */ | |
5327 | break; | |
60e1c644 PA |
5328 | case WP_IGNORE: |
5329 | bs->print_it = print_it_noop; | |
4ec2227a | 5330 | bs->stop = false; |
60e1c644 | 5331 | break; |
18a18393 | 5332 | case WP_VALUE_CHANGED: |
c1fc2657 | 5333 | if (b->type == bp_read_watchpoint) |
18a18393 | 5334 | { |
85d721b8 PA |
5335 | /* There are two cases to consider here: |
5336 | ||
4a64f543 | 5337 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5338 | In that case, trust the target, and always report |
5339 | the watchpoint hit to the user. Even though | |
5340 | reads don't cause value changes, the value may | |
5341 | have changed since the last time it was read, and | |
5342 | since we're not trapping writes, we will not see | |
5343 | those, and as such we should ignore our notion of | |
5344 | old value. | |
5345 | ||
4a64f543 | 5346 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5347 | reads and writes. There are two ways this may |
5348 | happen: | |
5349 | ||
4a64f543 | 5350 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5351 | reads only, but can break on accesses (reads or |
5352 | writes), such as e.g., x86. We detect this case | |
5353 | at the time we try to insert read watchpoints. | |
5354 | ||
4a64f543 | 5355 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5356 | watchpoints, but, the user set an access or write |
5357 | watchpoint watching the same memory as this read | |
5358 | watchpoint. | |
5359 | ||
5360 | If we're watching memory writes as well as reads, | |
5361 | ignore watchpoint hits when we find that the | |
5362 | value hasn't changed, as reads don't cause | |
5363 | changes. This still gives false positives when | |
5364 | the program writes the same value to memory as | |
5365 | what there was already in memory (we will confuse | |
5366 | it for a read), but it's much better than | |
5367 | nothing. */ | |
5368 | ||
5369 | int other_write_watchpoint = 0; | |
5370 | ||
5371 | if (bl->watchpoint_type == hw_read) | |
5372 | { | |
43892fdf | 5373 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5374 | if (other_b->type == bp_hardware_watchpoint |
5375 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5376 | { |
3a5c3e22 PA |
5377 | struct watchpoint *other_w = |
5378 | (struct watchpoint *) other_b; | |
5379 | ||
5380 | if (other_w->watchpoint_triggered | |
5381 | == watch_triggered_yes) | |
5382 | { | |
5383 | other_write_watchpoint = 1; | |
5384 | break; | |
5385 | } | |
85d721b8 PA |
5386 | } |
5387 | } | |
5388 | ||
5389 | if (other_write_watchpoint | |
5390 | || bl->watchpoint_type == hw_access) | |
5391 | { | |
5392 | /* We're watching the same memory for writes, | |
5393 | and the value changed since the last time we | |
5394 | updated it, so this trap must be for a write. | |
5395 | Ignore it. */ | |
5396 | bs->print_it = print_it_noop; | |
4ec2227a | 5397 | bs->stop = false; |
85d721b8 | 5398 | } |
18a18393 VP |
5399 | } |
5400 | break; | |
5401 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5402 | if (b->type == bp_hardware_watchpoint |
5403 | || b->type == bp_watchpoint) | |
18a18393 VP |
5404 | { |
5405 | /* Don't stop: write watchpoints shouldn't fire if | |
5406 | the value hasn't changed. */ | |
5407 | bs->print_it = print_it_noop; | |
4ec2227a | 5408 | bs->stop = false; |
18a18393 VP |
5409 | } |
5410 | /* Stop. */ | |
5411 | break; | |
5412 | default: | |
5413 | /* Can't happen. */ | |
18a18393 VP |
5414 | break; |
5415 | } | |
5416 | } | |
d8de7963 | 5417 | else /* !must_check_value */ |
18a18393 VP |
5418 | { |
5419 | /* This is a case where some watchpoint(s) triggered, but | |
5420 | not at the address of this watchpoint, or else no | |
5421 | watchpoint triggered after all. So don't print | |
5422 | anything for this watchpoint. */ | |
5423 | bs->print_it = print_it_noop; | |
4ec2227a | 5424 | bs->stop = false; |
18a18393 VP |
5425 | } |
5426 | } | |
5427 | } | |
5428 | ||
7d4df6a4 DE |
5429 | /* For breakpoints that are currently marked as telling gdb to stop, |
5430 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5431 | of breakpoint referred to by BS. If we should not stop for this |
5432 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5433 | |
18a18393 | 5434 | static void |
313f3b21 | 5435 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5436 | { |
d8a77e4c AB |
5437 | INFRUN_SCOPED_DEBUG_ENTER_EXIT; |
5438 | ||
2bdf28a0 JK |
5439 | const struct bp_location *bl; |
5440 | struct breakpoint *b; | |
bf469271 PA |
5441 | /* Assume stop. */ |
5442 | bool condition_result = true; | |
7d4df6a4 DE |
5443 | struct expression *cond; |
5444 | ||
5445 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5446 | |
5447 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5448 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5449 | gdb_assert (bl != NULL); |
f431efe5 | 5450 | b = bs->breakpoint_at; |
2bdf28a0 | 5451 | gdb_assert (b != NULL); |
18a18393 | 5452 | |
d8a77e4c AB |
5453 | infrun_debug_printf ("thread = %s, breakpoint %d.%d", |
5454 | thread->ptid.to_string ().c_str (), | |
5455 | b->number, find_loc_num_by_location (bl)); | |
5456 | ||
b775012e LM |
5457 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5458 | need to do so again since GDB does not know if we stopped due to a | |
5459 | breakpoint or a single step breakpoint. */ | |
5460 | ||
18a18393 | 5461 | if (frame_id_p (b->frame_id) |
a0cbd650 | 5462 | && b->frame_id != get_stack_frame_id (get_current_frame ())) |
18a18393 | 5463 | { |
d8a77e4c AB |
5464 | infrun_debug_printf ("incorrect frame %s not %s, not stopping", |
5465 | get_stack_frame_id (get_current_frame ()).to_string ().c_str (), | |
5466 | b->frame_id.to_string ().c_str ()); | |
4ec2227a | 5467 | bs->stop = false; |
7d4df6a4 DE |
5468 | return; |
5469 | } | |
60e1c644 | 5470 | |
12ab52e9 PA |
5471 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5472 | evaluating the condition if this isn't the specified | |
5473 | thread/task. */ | |
00431a78 | 5474 | if ((b->thread != -1 && b->thread != thread->global_num) |
2ecee236 | 5475 | || (b->task != -1 && b->task != ada_get_task_number (thread))) |
6c1b0f7b | 5476 | { |
d8a77e4c | 5477 | infrun_debug_printf ("incorrect thread or task, not stopping"); |
4ec2227a | 5478 | bs->stop = false; |
6c1b0f7b DE |
5479 | return; |
5480 | } | |
5481 | ||
6dddc817 DE |
5482 | /* Evaluate extension language breakpoints that have a "stop" method |
5483 | implemented. */ | |
5484 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5485 | |
7d4df6a4 DE |
5486 | if (is_watchpoint (b)) |
5487 | { | |
5488 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5489 | |
4d01a485 | 5490 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5491 | } |
5492 | else | |
4d01a485 | 5493 | cond = bl->cond.get (); |
60e1c644 | 5494 | |
80e0c6dc | 5495 | if (cond != nullptr && b->disposition != disp_del_at_next_stop) |
7d4df6a4 | 5496 | { |
d8de7963 | 5497 | bool within_current_scope = true; |
7d4df6a4 | 5498 | struct watchpoint * w; |
60e1c644 | 5499 | |
65558ca5 TT |
5500 | /* We use scoped_value_mark because it could be a long time |
5501 | before we return to the command level and call | |
5502 | free_all_values. We can't call free_all_values because we | |
5503 | might be in the middle of evaluating a function call. */ | |
5504 | scoped_value_mark mark; | |
7d4df6a4 DE |
5505 | |
5506 | if (is_watchpoint (b)) | |
5507 | w = (struct watchpoint *) b; | |
5508 | else | |
5509 | w = NULL; | |
5510 | ||
5511 | /* Need to select the frame, with all that implies so that | |
5512 | the conditions will have the right context. Because we | |
5513 | use the frame, we will not see an inlined function's | |
5514 | variables when we arrive at a breakpoint at the start | |
5515 | of the inlined function; the current frame will be the | |
5516 | call site. */ | |
5517 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5518 | select_frame (get_current_frame ()); | |
5519 | else | |
18a18393 | 5520 | { |
bd2b40ac | 5521 | frame_info_ptr frame; |
7d4df6a4 DE |
5522 | |
5523 | /* For local watchpoint expressions, which particular | |
5524 | instance of a local is being watched matters, so we | |
5525 | keep track of the frame to evaluate the expression | |
5526 | in. To evaluate the condition however, it doesn't | |
5527 | really matter which instantiation of the function | |
5528 | where the condition makes sense triggers the | |
5529 | watchpoint. This allows an expression like "watch | |
5530 | global if q > 10" set in `func', catch writes to | |
5531 | global on all threads that call `func', or catch | |
5532 | writes on all recursive calls of `func' by a single | |
5533 | thread. We simply always evaluate the condition in | |
5534 | the innermost frame that's executing where it makes | |
5535 | sense to evaluate the condition. It seems | |
5536 | intuitive. */ | |
5537 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5538 | if (frame != NULL) | |
5539 | select_frame (frame); | |
5540 | else | |
d8de7963 | 5541 | within_current_scope = false; |
18a18393 | 5542 | } |
7d4df6a4 | 5543 | if (within_current_scope) |
bf469271 | 5544 | { |
a70b8144 | 5545 | try |
bf469271 PA |
5546 | { |
5547 | condition_result = breakpoint_cond_eval (cond); | |
5548 | } | |
230d2906 | 5549 | catch (const gdb_exception &ex) |
bf469271 PA |
5550 | { |
5551 | exception_fprintf (gdb_stderr, ex, | |
5552 | "Error in testing breakpoint condition:\n"); | |
5553 | } | |
bf469271 | 5554 | } |
7d4df6a4 | 5555 | else |
18a18393 | 5556 | { |
7d4df6a4 DE |
5557 | warning (_("Watchpoint condition cannot be tested " |
5558 | "in the current scope")); | |
5559 | /* If we failed to set the right context for this | |
5560 | watchpoint, unconditionally report it. */ | |
18a18393 | 5561 | } |
7d4df6a4 | 5562 | /* FIXME-someday, should give breakpoint #. */ |
18a18393 | 5563 | } |
7d4df6a4 | 5564 | |
80e0c6dc | 5565 | if (cond != nullptr && !condition_result) |
7d4df6a4 | 5566 | { |
d8a77e4c | 5567 | infrun_debug_printf ("condition_result = false, not stopping"); |
4ec2227a | 5568 | bs->stop = false; |
d8a77e4c | 5569 | return; |
7d4df6a4 | 5570 | } |
7d4df6a4 DE |
5571 | else if (b->ignore_count > 0) |
5572 | { | |
d8a77e4c AB |
5573 | infrun_debug_printf ("ignore count %d, not stopping", |
5574 | b->ignore_count); | |
7d4df6a4 | 5575 | b->ignore_count--; |
4ec2227a | 5576 | bs->stop = false; |
7d4df6a4 DE |
5577 | /* Increase the hit count even though we don't stop. */ |
5578 | ++(b->hit_count); | |
76727919 | 5579 | gdb::observers::breakpoint_modified.notify (b); |
d8a77e4c AB |
5580 | return; |
5581 | } | |
5582 | ||
5583 | if (bs->stop) | |
5584 | infrun_debug_printf ("stopping at this breakpoint"); | |
5585 | else | |
5586 | infrun_debug_printf ("not stopping at this breakpoint"); | |
18a18393 VP |
5587 | } |
5588 | ||
1cf4d951 PA |
5589 | /* Returns true if we need to track moribund locations of LOC's type |
5590 | on the current target. */ | |
5591 | ||
d8de7963 | 5592 | static bool |
b2ff9ed3 | 5593 | need_moribund_for_location_type (const struct bp_location *loc) |
1cf4d951 PA |
5594 | { |
5595 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5596 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5597 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5598 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5599 | } | |
5600 | ||
ddfe970e | 5601 | /* See breakpoint.h. */ |
c906108c | 5602 | |
313f3b21 | 5603 | bpstat * |
ddfe970e | 5604 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5605 | const target_waitstatus &ws) |
c906108c | 5606 | { |
313f3b21 | 5607 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5608 | |
43892fdf | 5609 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5610 | { |
1a853c52 | 5611 | if (!breakpoint_enabled (b)) |
429374b8 | 5612 | continue; |
a5606eee | 5613 | |
40cb8ca5 | 5614 | for (bp_location *bl : b->locations ()) |
429374b8 | 5615 | { |
4a64f543 MS |
5616 | /* For hardware watchpoints, we look only at the first |
5617 | location. The watchpoint_check function will work on the | |
5618 | entire expression, not the individual locations. For | |
5619 | read watchpoints, the watchpoints_triggered function has | |
5620 | checked all locations already. */ | |
429374b8 JK |
5621 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5622 | break; | |
18a18393 | 5623 | |
b5fa468f | 5624 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5625 | continue; |
c5aa993b | 5626 | |
09ac7c10 | 5627 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5628 | continue; |
c5aa993b | 5629 | |
4a64f543 MS |
5630 | /* Come here if it's a watchpoint, or if the break address |
5631 | matches. */ | |
c5aa993b | 5632 | |
313f3b21 | 5633 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5634 | explain stop. */ |
c5aa993b | 5635 | |
f431efe5 PA |
5636 | /* Assume we stop. Should we find a watchpoint that is not |
5637 | actually triggered, or if the condition of the breakpoint | |
5638 | evaluates as false, we'll reset 'stop' to 0. */ | |
4ec2227a TT |
5639 | bs->stop = true; |
5640 | bs->print = true; | |
d983da9c | 5641 | |
f431efe5 PA |
5642 | /* If this is a scope breakpoint, mark the associated |
5643 | watchpoint as triggered so that we will handle the | |
5644 | out-of-scope event. We'll get to the watchpoint next | |
5645 | iteration. */ | |
d0fb5eae | 5646 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5647 | { |
5648 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5649 | ||
5650 | w->watchpoint_triggered = watch_triggered_yes; | |
5651 | } | |
f431efe5 PA |
5652 | } |
5653 | } | |
5654 | ||
7c16b83e | 5655 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5656 | if (!target_supports_stopped_by_sw_breakpoint () |
5657 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5658 | { |
1123588c | 5659 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5660 | { |
1cf4d951 PA |
5661 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5662 | && need_moribund_for_location_type (loc)) | |
5663 | { | |
313f3b21 | 5664 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 | 5665 | /* For hits of moribund locations, we should just proceed. */ |
4ec2227a TT |
5666 | bs->stop = false; |
5667 | bs->print = false; | |
1cf4d951 PA |
5668 | bs->print_it = print_it_noop; |
5669 | } | |
f431efe5 PA |
5670 | } |
5671 | } | |
5672 | ||
ddfe970e KS |
5673 | return bs_head; |
5674 | } | |
5675 | ||
5676 | /* See breakpoint.h. */ | |
5677 | ||
313f3b21 | 5678 | bpstat * |
ddfe970e | 5679 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5680 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5681 | const target_waitstatus &ws, |
313f3b21 | 5682 | bpstat *stop_chain) |
ddfe970e KS |
5683 | { |
5684 | struct breakpoint *b = NULL; | |
5685 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5686 | bpstat *bs_head = stop_chain; |
5687 | bpstat *bs; | |
ddfe970e KS |
5688 | int need_remove_insert; |
5689 | int removed_any; | |
5690 | ||
5691 | /* First, build the bpstat chain with locations that explain a | |
5692 | target stop, while being careful to not set the target running, | |
5693 | as that may invalidate locations (in particular watchpoint | |
5694 | locations are recreated). Resuming will happen here with | |
5695 | breakpoint conditions or watchpoint expressions that include | |
5696 | inferior function calls. */ | |
5697 | if (bs_head == NULL) | |
5698 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5699 | ||
edcc5120 TT |
5700 | /* A bit of special processing for shlib breakpoints. We need to |
5701 | process solib loading here, so that the lists of loaded and | |
5702 | unloaded libraries are correct before we handle "catch load" and | |
5703 | "catch unload". */ | |
5704 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5705 | { | |
5d268276 | 5706 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5707 | { |
5708 | handle_solib_event (); | |
5709 | break; | |
5710 | } | |
5711 | } | |
5712 | ||
f431efe5 PA |
5713 | /* Now go through the locations that caused the target to stop, and |
5714 | check whether we're interested in reporting this stop to higher | |
5715 | layers, or whether we should resume the target transparently. */ | |
5716 | ||
5717 | removed_any = 0; | |
5718 | ||
5760d0ab | 5719 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5720 | { |
5721 | if (!bs->stop) | |
5722 | continue; | |
5723 | ||
f431efe5 | 5724 | b = bs->breakpoint_at; |
c47614fe | 5725 | b->check_status (bs); |
348d480f | 5726 | if (bs->stop) |
28010a5d | 5727 | { |
00431a78 | 5728 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5729 | |
429374b8 JK |
5730 | if (bs->stop) |
5731 | { | |
5732 | ++(b->hit_count); | |
c906108c | 5733 | |
4a64f543 | 5734 | /* We will stop here. */ |
429374b8 JK |
5735 | if (b->disposition == disp_disable) |
5736 | { | |
816338b5 | 5737 | --(b->enable_count); |
1a853c52 | 5738 | if (b->enable_count <= 0) |
429374b8 | 5739 | b->enable_state = bp_disabled; |
f431efe5 | 5740 | removed_any = 1; |
429374b8 | 5741 | } |
bd7ccaa9 | 5742 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 | 5743 | if (b->silent) |
4ec2227a | 5744 | bs->print = false; |
429374b8 | 5745 | bs->commands = b->commands; |
abf85f46 | 5746 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5747 | ? bs->commands.get () : NULL)) |
4ec2227a | 5748 | bs->print = false; |
9d6e6e84 | 5749 | |
c47614fe | 5750 | b->after_condition_true (bs); |
429374b8 JK |
5751 | } |
5752 | ||
348d480f | 5753 | } |
a9b3a50f PA |
5754 | |
5755 | /* Print nothing for this entry if we don't stop or don't | |
5756 | print. */ | |
5757 | if (!bs->stop || !bs->print) | |
5758 | bs->print_it = print_it_noop; | |
429374b8 | 5759 | } |
876fa593 | 5760 | |
d983da9c DJ |
5761 | /* If we aren't stopping, the value of some hardware watchpoint may |
5762 | not have changed, but the intermediate memory locations we are | |
5763 | watching may have. Don't bother if we're stopping; this will get | |
5764 | done later. */ | |
d832cb68 | 5765 | need_remove_insert = 0; |
5760d0ab JK |
5766 | if (! bpstat_causes_stop (bs_head)) |
5767 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5768 | if (!bs->stop |
f431efe5 PA |
5769 | && bs->breakpoint_at |
5770 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5771 | { |
3a5c3e22 PA |
5772 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5773 | ||
d8de7963 | 5774 | update_watchpoint (w, false /* don't reparse. */); |
d832cb68 | 5775 | need_remove_insert = 1; |
d983da9c DJ |
5776 | } |
5777 | ||
d832cb68 | 5778 | if (need_remove_insert) |
44702360 | 5779 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5780 | else if (removed_any) |
44702360 | 5781 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5782 | |
5760d0ab | 5783 | return bs_head; |
c906108c | 5784 | } |
628fe4e4 | 5785 | |
d37e0847 PA |
5786 | /* See breakpoint.h. */ |
5787 | ||
5788 | bpstat * | |
5789 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5790 | thread_info *thread, const target_waitstatus &ws) | |
5791 | { | |
5792 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5793 | ||
5794 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5795 | previous stop to avoid confusing bpstat_stop_status. */ | |
5796 | watchpoints_triggered (ws); | |
5797 | ||
5798 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5799 | } | |
5800 | ||
628fe4e4 | 5801 | static void |
61c26be8 | 5802 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5803 | { |
628fe4e4 JK |
5804 | struct gdbarch *gdbarch; |
5805 | ||
1eb8556f | 5806 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5807 | |
628fe4e4 JK |
5808 | /* Switch terminal for any messages produced by |
5809 | breakpoint_re_set. */ | |
223ffa71 | 5810 | target_terminal::ours_for_output (); |
628fe4e4 | 5811 | |
61c26be8 MS |
5812 | gdbarch = get_frame_arch (get_current_frame ()); |
5813 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5814 | thus it is expected that its objectfile can be found through | |
5815 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5816 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5817 | function needs to be updated too. */ | |
5818 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5819 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
508ccf9b TV |
5820 | objfile *objfile = jit_bp_sym.objfile; |
5821 | if (objfile->separate_debug_objfile_backlink) | |
5822 | objfile = objfile->separate_debug_objfile_backlink; | |
5823 | jit_event_handler (gdbarch, objfile); | |
628fe4e4 | 5824 | |
223ffa71 | 5825 | target_terminal::inferior (); |
628fe4e4 JK |
5826 | } |
5827 | ||
5828 | /* Prepare WHAT final decision for infrun. */ | |
5829 | ||
5830 | /* Decide what infrun needs to do with this bpstat. */ | |
5831 | ||
c906108c | 5832 | struct bpstat_what |
313f3b21 | 5833 | bpstat_what (bpstat *bs_head) |
c906108c | 5834 | { |
c906108c | 5835 | struct bpstat_what retval; |
313f3b21 | 5836 | bpstat *bs; |
c906108c | 5837 | |
628fe4e4 | 5838 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5839 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5840 | retval.is_longjmp = false; |
628fe4e4 | 5841 | |
0e30163f | 5842 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5843 | { |
628fe4e4 JK |
5844 | /* Extract this BS's action. After processing each BS, we check |
5845 | if its action overrides all we've seem so far. */ | |
5846 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5847 | enum bptype bptype; | |
5848 | ||
c906108c | 5849 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5850 | { |
5851 | /* I suspect this can happen if it was a momentary | |
5852 | breakpoint which has since been deleted. */ | |
5853 | bptype = bp_none; | |
5854 | } | |
20874c92 | 5855 | else |
f431efe5 | 5856 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5857 | |
5858 | switch (bptype) | |
c906108c SS |
5859 | { |
5860 | case bp_none: | |
628fe4e4 | 5861 | break; |
c906108c SS |
5862 | case bp_breakpoint: |
5863 | case bp_hardware_breakpoint: | |
7c16b83e | 5864 | case bp_single_step: |
c906108c SS |
5865 | case bp_until: |
5866 | case bp_finish: | |
a9b3a50f | 5867 | case bp_shlib_event: |
c906108c SS |
5868 | if (bs->stop) |
5869 | { | |
5870 | if (bs->print) | |
628fe4e4 | 5871 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5872 | else |
628fe4e4 | 5873 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5874 | } |
5875 | else | |
628fe4e4 | 5876 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5877 | break; |
5878 | case bp_watchpoint: | |
5879 | case bp_hardware_watchpoint: | |
5880 | case bp_read_watchpoint: | |
5881 | case bp_access_watchpoint: | |
5882 | if (bs->stop) | |
5883 | { | |
5884 | if (bs->print) | |
628fe4e4 | 5885 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5886 | else |
628fe4e4 | 5887 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5888 | } |
5889 | else | |
628fe4e4 JK |
5890 | { |
5891 | /* There was a watchpoint, but we're not stopping. | |
5892 | This requires no further action. */ | |
5893 | } | |
c906108c SS |
5894 | break; |
5895 | case bp_longjmp: | |
e2e4d78b | 5896 | case bp_longjmp_call_dummy: |
186c406b | 5897 | case bp_exception: |
0a39bb32 PA |
5898 | if (bs->stop) |
5899 | { | |
5900 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5901 | retval.is_longjmp = bptype != bp_exception; | |
5902 | } | |
5903 | else | |
5904 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5905 | break; |
5906 | case bp_longjmp_resume: | |
186c406b | 5907 | case bp_exception_resume: |
0a39bb32 PA |
5908 | if (bs->stop) |
5909 | { | |
5910 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5911 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5912 | } | |
5913 | else | |
5914 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5915 | break; |
5916 | case bp_step_resume: | |
5917 | if (bs->stop) | |
628fe4e4 JK |
5918 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5919 | else | |
c906108c | 5920 | { |
628fe4e4 JK |
5921 | /* It is for the wrong frame. */ |
5922 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5923 | } |
c906108c | 5924 | break; |
2c03e5be PA |
5925 | case bp_hp_step_resume: |
5926 | if (bs->stop) | |
5927 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5928 | else | |
5929 | { | |
5930 | /* It is for the wrong frame. */ | |
5931 | this_action = BPSTAT_WHAT_SINGLE; | |
5932 | } | |
5933 | break; | |
c906108c | 5934 | case bp_watchpoint_scope: |
c4093a6a | 5935 | case bp_thread_event: |
1900040c | 5936 | case bp_overlay_event: |
0fd8e87f | 5937 | case bp_longjmp_master: |
aa7d318d | 5938 | case bp_std_terminate_master: |
186c406b | 5939 | case bp_exception_master: |
628fe4e4 | 5940 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5941 | break; |
ce78b96d | 5942 | case bp_catchpoint: |
c5aa993b JM |
5943 | if (bs->stop) |
5944 | { | |
5945 | if (bs->print) | |
628fe4e4 | 5946 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5947 | else |
628fe4e4 | 5948 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5949 | } |
5950 | else | |
628fe4e4 | 5951 | { |
cb1e4e32 PA |
5952 | /* Some catchpoints are implemented with breakpoints. |
5953 | For those, we need to step over the breakpoint. */ | |
6e14e441 PA |
5954 | if (bs->bp_location_at->loc_type == bp_loc_software_breakpoint |
5955 | || bs->bp_location_at->loc_type == bp_loc_hardware_breakpoint) | |
cb1e4e32 | 5956 | this_action = BPSTAT_WHAT_SINGLE; |
628fe4e4 JK |
5957 | } |
5958 | break; | |
628fe4e4 | 5959 | case bp_jit_event: |
628fe4e4 | 5960 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5961 | break; |
c906108c | 5962 | case bp_call_dummy: |
53a5351d JM |
5963 | /* Make sure the action is stop (silent or noisy), |
5964 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5965 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5966 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5967 | break; |
5968 | case bp_std_terminate: | |
5969 | /* Make sure the action is stop (silent or noisy), | |
5970 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5971 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5972 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5973 | break; |
1042e4c0 | 5974 | case bp_tracepoint: |
7a697b8d | 5975 | case bp_fast_tracepoint: |
0fb4aa4b | 5976 | case bp_static_tracepoint: |
7b572efb | 5977 | case bp_static_marker_tracepoint: |
1042e4c0 SS |
5978 | /* Tracepoint hits should not be reported back to GDB, and |
5979 | if one got through somehow, it should have been filtered | |
5980 | out already. */ | |
f34652de | 5981 | internal_error (_("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5982 | break; |
5983 | case bp_gnu_ifunc_resolver: | |
5984 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5985 | this_action = BPSTAT_WHAT_SINGLE; | |
5986 | break; | |
5987 | case bp_gnu_ifunc_resolver_return: | |
5988 | /* The breakpoint will be removed, execution will restart from the | |
5989 | PC of the former breakpoint. */ | |
5990 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5991 | break; | |
e7e0cddf SS |
5992 | |
5993 | case bp_dprintf: | |
a11cfd87 HZ |
5994 | if (bs->stop) |
5995 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5996 | else | |
5997 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5998 | break; |
5999 | ||
628fe4e4 | 6000 | default: |
f34652de | 6001 | internal_error (_("bpstat_what: unhandled bptype %d"), (int) bptype); |
c906108c | 6002 | } |
628fe4e4 | 6003 | |
325fac50 | 6004 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 6005 | } |
628fe4e4 | 6006 | |
243a9253 PA |
6007 | return retval; |
6008 | } | |
628fe4e4 | 6009 | |
243a9253 | 6010 | void |
313f3b21 | 6011 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 6012 | { |
313f3b21 | 6013 | bpstat *bs; |
628fe4e4 | 6014 | |
0e30163f JK |
6015 | for (bs = bs_head; bs != NULL; bs = bs->next) |
6016 | { | |
6017 | struct breakpoint *b = bs->breakpoint_at; | |
6018 | ||
6019 | if (b == NULL) | |
6020 | continue; | |
6021 | switch (b->type) | |
6022 | { | |
243a9253 | 6023 | case bp_jit_event: |
61c26be8 | 6024 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 6025 | break; |
0e30163f | 6026 | case bp_gnu_ifunc_resolver: |
74421c0b | 6027 | gnu_ifunc_resolver_stop ((code_breakpoint *) b); |
0e30163f JK |
6028 | break; |
6029 | case bp_gnu_ifunc_resolver_return: | |
74421c0b | 6030 | gnu_ifunc_resolver_return_stop ((code_breakpoint *) b); |
0e30163f JK |
6031 | break; |
6032 | } | |
6033 | } | |
c906108c SS |
6034 | } |
6035 | ||
4c462cb0 | 6036 | /* See breakpoint.h. */ |
c906108c | 6037 | |
4c462cb0 SM |
6038 | bool |
6039 | bpstat_should_step () | |
c906108c | 6040 | { |
43892fdf | 6041 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 6042 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 6043 | return true; |
43892fdf | 6044 | |
4c462cb0 | 6045 | return false; |
c906108c SS |
6046 | } |
6047 | ||
4c462cb0 SM |
6048 | /* See breakpoint.h. */ |
6049 | ||
6050 | bool | |
313f3b21 | 6051 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
6052 | { |
6053 | for (; bs != NULL; bs = bs->next) | |
6054 | if (bs->stop) | |
4c462cb0 | 6055 | return true; |
67822962 | 6056 | |
4c462cb0 | 6057 | return false; |
67822962 PA |
6058 | } |
6059 | ||
c906108c | 6060 | \f |
c5aa993b | 6061 | |
6c92c339 | 6062 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
6063 | so it starts at the position corresponding to the table column |
6064 | named COL_NAME in the currently active table of UIOUT. */ | |
6065 | ||
6c92c339 | 6066 | static int |
170b53b2 UW |
6067 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
6068 | { | |
170b53b2 | 6069 | int i, total_width, width, align; |
c5209615 | 6070 | const char *text; |
170b53b2 UW |
6071 | |
6072 | total_width = 0; | |
112e8700 | 6073 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
6074 | { |
6075 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 6076 | return total_width; |
170b53b2 UW |
6077 | |
6078 | total_width += width + 1; | |
6079 | } | |
6080 | ||
6c92c339 | 6081 | return 0; |
170b53b2 UW |
6082 | } |
6083 | ||
b775012e LM |
6084 | /* Determine if the locations of this breakpoint will have their conditions |
6085 | evaluated by the target, host or a mix of both. Returns the following: | |
6086 | ||
6087 | "host": Host evals condition. | |
6088 | "host or target": Host or Target evals condition. | |
6089 | "target": Target evals condition. | |
6090 | */ | |
6091 | ||
6092 | static const char * | |
a67bcaba | 6093 | bp_condition_evaluator (const breakpoint *b) |
b775012e | 6094 | { |
b775012e LM |
6095 | char host_evals = 0; |
6096 | char target_evals = 0; | |
6097 | ||
6098 | if (!b) | |
6099 | return NULL; | |
6100 | ||
6101 | if (!is_breakpoint (b)) | |
6102 | return NULL; | |
6103 | ||
6104 | if (gdb_evaluates_breakpoint_condition_p () | |
6105 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6106 | return condition_evaluation_host; | |
6107 | ||
40cb8ca5 | 6108 | for (bp_location *bl : b->locations ()) |
b775012e LM |
6109 | { |
6110 | if (bl->cond_bytecode) | |
6111 | target_evals++; | |
6112 | else | |
6113 | host_evals++; | |
6114 | } | |
6115 | ||
6116 | if (host_evals && target_evals) | |
6117 | return condition_evaluation_both; | |
6118 | else if (target_evals) | |
6119 | return condition_evaluation_target; | |
6120 | else | |
6121 | return condition_evaluation_host; | |
6122 | } | |
6123 | ||
6124 | /* Determine the breakpoint location's condition evaluator. This is | |
6125 | similar to bp_condition_evaluator, but for locations. */ | |
6126 | ||
6127 | static const char * | |
b2ff9ed3 | 6128 | bp_location_condition_evaluator (const struct bp_location *bl) |
b775012e LM |
6129 | { |
6130 | if (bl && !is_breakpoint (bl->owner)) | |
6131 | return NULL; | |
6132 | ||
6133 | if (gdb_evaluates_breakpoint_condition_p () | |
6134 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6135 | return condition_evaluation_host; | |
6136 | ||
6137 | if (bl && bl->cond_bytecode) | |
6138 | return condition_evaluation_target; | |
6139 | else | |
6140 | return condition_evaluation_host; | |
6141 | } | |
6142 | ||
859825b8 JK |
6143 | /* Print the LOC location out of the list of B->LOC locations. */ |
6144 | ||
170b53b2 | 6145 | static void |
a67bcaba | 6146 | print_breakpoint_location (const breakpoint *b, |
170b53b2 | 6147 | struct bp_location *loc) |
0d381245 | 6148 | { |
79a45e25 | 6149 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
6150 | |
6151 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 6152 | |
859825b8 JK |
6153 | if (loc != NULL && loc->shlib_disabled) |
6154 | loc = NULL; | |
6155 | ||
6c95b8df PA |
6156 | if (loc != NULL) |
6157 | set_current_program_space (loc->pspace); | |
6158 | ||
56435ebe | 6159 | if (b->display_canonical) |
709438c7 | 6160 | uiout->field_string ("what", b->locspec->to_string ()); |
2f202fde | 6161 | else if (loc && loc->symtab) |
0d381245 | 6162 | { |
4a27f119 KS |
6163 | const struct symbol *sym = loc->symbol; |
6164 | ||
0d381245 VP |
6165 | if (sym) |
6166 | { | |
112e8700 | 6167 | uiout->text ("in "); |
987012b8 | 6168 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 6169 | function_name_style.style ()); |
112e8700 SM |
6170 | uiout->text (" "); |
6171 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6172 | uiout->text ("at "); | |
0d381245 | 6173 | } |
112e8700 | 6174 | uiout->field_string ("file", |
cbe56571 | 6175 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 6176 | file_name_style.style ()); |
112e8700 | 6177 | uiout->text (":"); |
05cba821 | 6178 | |
112e8700 SM |
6179 | if (uiout->is_mi_like_p ()) |
6180 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6181 | |
381befee | 6182 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 6183 | } |
859825b8 | 6184 | else if (loc) |
0d381245 | 6185 | { |
d7e74731 | 6186 | string_file stb; |
170b53b2 | 6187 | |
d7e74731 | 6188 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6189 | demangle, ""); |
112e8700 | 6190 | uiout->field_stream ("at", stb); |
0d381245 | 6191 | } |
859825b8 | 6192 | else |
f00aae0f | 6193 | { |
709438c7 | 6194 | uiout->field_string ("pending", b->locspec->to_string ()); |
f00aae0f KS |
6195 | /* If extra_string is available, it could be holding a condition |
6196 | or dprintf arguments. In either case, make sure it is printed, | |
6197 | too, but only for non-MI streams. */ | |
112e8700 | 6198 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6199 | { |
6200 | if (b->type == bp_dprintf) | |
112e8700 | 6201 | uiout->text (","); |
f00aae0f | 6202 | else |
112e8700 | 6203 | uiout->text (" "); |
6f781ee3 | 6204 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
6205 | } |
6206 | } | |
6c95b8df | 6207 | |
b775012e LM |
6208 | if (loc && is_breakpoint (b) |
6209 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6210 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6211 | { | |
112e8700 SM |
6212 | uiout->text (" ("); |
6213 | uiout->field_string ("evaluated-by", | |
b775012e | 6214 | bp_location_condition_evaluator (loc)); |
112e8700 | 6215 | uiout->text (")"); |
b775012e | 6216 | } |
0d381245 VP |
6217 | } |
6218 | ||
269b11a2 PA |
6219 | static const char * |
6220 | bptype_string (enum bptype type) | |
c906108c | 6221 | { |
c4093a6a JM |
6222 | struct ep_type_description |
6223 | { | |
6224 | enum bptype type; | |
a121b7c1 | 6225 | const char *description; |
c4093a6a JM |
6226 | }; |
6227 | static struct ep_type_description bptypes[] = | |
c906108c | 6228 | { |
c5aa993b JM |
6229 | {bp_none, "?deleted?"}, |
6230 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6231 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6232 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6233 | {bp_until, "until"}, |
6234 | {bp_finish, "finish"}, | |
6235 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6236 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6237 | {bp_read_watchpoint, "read watchpoint"}, |
6238 | {bp_access_watchpoint, "acc watchpoint"}, | |
6239 | {bp_longjmp, "longjmp"}, | |
6240 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6241 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6242 | {bp_exception, "exception"}, |
6243 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6244 | {bp_step_resume, "step resume"}, |
2c03e5be | 6245 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6246 | {bp_watchpoint_scope, "watchpoint scope"}, |
6247 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6248 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6249 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6250 | {bp_thread_event, "thread events"}, |
1900040c | 6251 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6252 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6253 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6254 | {bp_exception_master, "exception master"}, |
ce78b96d | 6255 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6256 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6257 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6258 | {bp_static_tracepoint, "static tracepoint"}, |
7b572efb | 6259 | {bp_static_marker_tracepoint, "static marker tracepoint"}, |
e7e0cddf | 6260 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6261 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6262 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6263 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6264 | }; |
269b11a2 PA |
6265 | |
6266 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6267 | || ((int) type != bptypes[(int) type].type)) | |
f34652de | 6268 | internal_error (_("bptypes table does not describe type #%d."), |
269b11a2 PA |
6269 | (int) type); |
6270 | ||
6271 | return bptypes[(int) type].description; | |
6272 | } | |
6273 | ||
998580f1 MK |
6274 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6275 | For CLI, prefix the list with the string 'inf'. */ | |
6276 | ||
6277 | static void | |
6278 | output_thread_groups (struct ui_out *uiout, | |
6279 | const char *field_name, | |
5c632425 | 6280 | const std::vector<int> &inf_nums, |
998580f1 MK |
6281 | int mi_only) |
6282 | { | |
112e8700 | 6283 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6284 | |
6285 | /* For backward compatibility, don't display inferiors in CLI unless | |
6286 | there are several. Always display them for MI. */ | |
6287 | if (!is_mi && mi_only) | |
6288 | return; | |
6289 | ||
10f489e5 | 6290 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6291 | |
5c632425 | 6292 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6293 | { |
6294 | if (is_mi) | |
6295 | { | |
6296 | char mi_group[10]; | |
6297 | ||
5c632425 | 6298 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6299 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6300 | } |
6301 | else | |
6302 | { | |
6303 | if (i == 0) | |
112e8700 | 6304 | uiout->text (" inf "); |
998580f1 | 6305 | else |
112e8700 | 6306 | uiout->text (", "); |
998580f1 | 6307 | |
5c632425 | 6308 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6309 | } |
6310 | } | |
998580f1 MK |
6311 | } |
6312 | ||
9db0d853 SM |
6313 | /* See breakpoint.h. */ |
6314 | ||
6315 | bool fix_breakpoint_script_output_globally = false; | |
6316 | ||
a38118e5 PA |
6317 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6318 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6319 | info breakpoints" show the software breakpoint locations of | |
6320 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6321 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6322 | print_one method did something; false otherwise. */ | |
269b11a2 | 6323 | |
c01e038b | 6324 | static bool |
269b11a2 PA |
6325 | print_one_breakpoint_location (struct breakpoint *b, |
6326 | struct bp_location *loc, | |
6327 | int loc_number, | |
6328 | struct bp_location **last_loc, | |
a38118e5 | 6329 | int allflag, bool raw_loc) |
269b11a2 PA |
6330 | { |
6331 | struct command_line *l; | |
c2c6d25f | 6332 | static char bpenables[] = "nynny"; |
c906108c | 6333 | |
79a45e25 | 6334 | struct ui_out *uiout = current_uiout; |
d8de7963 AB |
6335 | bool header_of_multiple = false; |
6336 | bool part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6337 | struct value_print_options opts; |
6338 | ||
6339 | get_user_print_options (&opts); | |
0d381245 VP |
6340 | |
6341 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6342 | /* See comment in print_one_breakpoint concerning treatment of |
6343 | breakpoints with single disabled location. */ | |
0d381245 VP |
6344 | if (loc == NULL |
6345 | && (b->loc != NULL | |
b5fa468f TBA |
6346 | && (b->loc->next != NULL |
6347 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
d8de7963 | 6348 | header_of_multiple = true; |
0d381245 VP |
6349 | if (loc == NULL) |
6350 | loc = b->loc; | |
6351 | ||
c4093a6a JM |
6352 | annotate_record (); |
6353 | ||
6354 | /* 1 */ | |
6355 | annotate_field (0); | |
0d381245 | 6356 | if (part_of_multiple) |
528e1572 | 6357 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6358 | else |
381befee | 6359 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6360 | |
6361 | /* 2 */ | |
6362 | annotate_field (1); | |
0d381245 | 6363 | if (part_of_multiple) |
112e8700 | 6364 | uiout->field_skip ("type"); |
269b11a2 | 6365 | else |
112e8700 | 6366 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6367 | |
6368 | /* 3 */ | |
6369 | annotate_field (2); | |
0d381245 | 6370 | if (part_of_multiple) |
112e8700 | 6371 | uiout->field_skip ("disp"); |
0d381245 | 6372 | else |
112e8700 | 6373 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6374 | |
c4093a6a JM |
6375 | /* 4 */ |
6376 | annotate_field (3); | |
0d381245 | 6377 | if (part_of_multiple) |
fbcda577 PA |
6378 | { |
6379 | /* For locations that are disabled because of an invalid | |
6380 | condition, display "N*" on the CLI, where "*" refers to a | |
6381 | footnote below the table. For MI, simply display a "N" | |
6382 | without a footnote. On the CLI, for enabled locations whose | |
6383 | breakpoint is disabled, display "y-". */ | |
6384 | auto get_enable_state = [uiout, loc] () -> const char * | |
6385 | { | |
6386 | if (uiout->is_mi_like_p ()) | |
6387 | { | |
6388 | if (loc->disabled_by_cond) | |
6389 | return "N"; | |
6390 | else if (!loc->enabled) | |
6391 | return "n"; | |
6392 | else | |
6393 | return "y"; | |
6394 | } | |
6395 | else | |
6396 | { | |
6397 | if (loc->disabled_by_cond) | |
6398 | return "N*"; | |
6399 | else if (!loc->enabled) | |
6400 | return "n"; | |
6401 | else if (!breakpoint_enabled (loc->owner)) | |
6402 | return "y-"; | |
6403 | else | |
6404 | return "y"; | |
6405 | } | |
6406 | }; | |
6407 | uiout->field_string ("enabled", get_enable_state ()); | |
6408 | } | |
0d381245 | 6409 | else |
112e8700 | 6410 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6411 | |
c4093a6a | 6412 | /* 5 and 6 */ |
c01e038b | 6413 | bool result = false; |
c47614fe | 6414 | if (!raw_loc && b->print_one (last_loc)) |
c01e038b | 6415 | result = true; |
3086aeae | 6416 | else |
a38118e5 PA |
6417 | { |
6418 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6419 | { |
6420 | struct watchpoint *w = (struct watchpoint *) b; | |
6421 | ||
6422 | /* Field 4, the address, is omitted (which makes the columns | |
6423 | not line up too nicely with the headers, but the effect | |
6424 | is relatively readable). */ | |
6425 | if (opts.addressprint) | |
112e8700 | 6426 | uiout->field_skip ("addr"); |
3a5c3e22 | 6427 | annotate_field (5); |
a4c50be3 | 6428 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6429 | } |
f06f1252 TT |
6430 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6431 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6432 | { |
6433 | if (opts.addressprint) | |
6434 | { | |
6435 | annotate_field (4); | |
6436 | if (header_of_multiple) | |
7f6aba03 TT |
6437 | uiout->field_string ("addr", "<MULTIPLE>", |
6438 | metadata_style.style ()); | |
a38118e5 | 6439 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6440 | uiout->field_string ("addr", "<PENDING>", |
6441 | metadata_style.style ()); | |
a38118e5 PA |
6442 | else |
6443 | uiout->field_core_addr ("addr", | |
6444 | loc->gdbarch, loc->address); | |
6445 | } | |
6446 | annotate_field (5); | |
6447 | if (!header_of_multiple) | |
6448 | print_breakpoint_location (b, loc); | |
6449 | if (b->loc) | |
6450 | *last_loc = b->loc; | |
6451 | } | |
6452 | } | |
6c95b8df | 6453 | |
998580f1 | 6454 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6455 | { |
5c632425 | 6456 | std::vector<int> inf_nums; |
998580f1 | 6457 | int mi_only = 1; |
6c95b8df | 6458 | |
08036331 | 6459 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6460 | { |
6461 | if (inf->pspace == loc->pspace) | |
5c632425 | 6462 | inf_nums.push_back (inf->num); |
6c95b8df | 6463 | } |
998580f1 | 6464 | |
dda83cd7 | 6465 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6466 | there are several. Always display for MI. */ |
6467 | if (allflag | |
6468 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6469 | && (program_spaces.size () > 1 |
998580f1 MK |
6470 | || number_of_inferiors () > 1) |
6471 | /* LOC is for existing B, it cannot be in | |
6472 | moribund_locations and thus having NULL OWNER. */ | |
6473 | && loc->owner->type != bp_catchpoint)) | |
6474 | mi_only = 0; | |
5c632425 | 6475 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6476 | } |
6477 | ||
944b1b18 AB |
6478 | /* In the MI output, each location of a thread or task specific |
6479 | breakpoint includes the relevant thread or task ID. This is done for | |
6480 | backwards compatibility reasons. | |
6481 | ||
6482 | For the CLI output, the thread/task information is printed on a | |
6483 | separate line, see the 'stop only in thread' and 'stop only in task' | |
6484 | output below. */ | |
6485 | if (!header_of_multiple && uiout->is_mi_like_p ()) | |
c4093a6a | 6486 | { |
4a306c9a | 6487 | if (b->thread != -1) |
944b1b18 | 6488 | uiout->field_signed ("thread", b->thread); |
2ecee236 | 6489 | else if (b->task != -1) |
944b1b18 | 6490 | uiout->field_signed ("task", b->task); |
c4093a6a | 6491 | } |
f1310107 | 6492 | |
112e8700 | 6493 | uiout->text ("\n"); |
f1310107 | 6494 | |
348d480f | 6495 | if (!part_of_multiple) |
c47614fe | 6496 | b->print_one_detail (uiout); |
f1310107 | 6497 | |
0d381245 | 6498 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6499 | { |
6500 | annotate_field (6); | |
112e8700 | 6501 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6502 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6503 | the frame ID. */ |
112e8700 | 6504 | uiout->field_core_addr ("frame", |
5af949e3 | 6505 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6506 | uiout->text ("\n"); |
c4093a6a JM |
6507 | } |
6508 | ||
28010a5d | 6509 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6510 | { |
6511 | annotate_field (7); | |
d77f58be | 6512 | if (is_tracepoint (b)) |
112e8700 | 6513 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6514 | else |
112e8700 | 6515 | uiout->text ("\tstop only if "); |
6f781ee3 | 6516 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6517 | |
6518 | /* Print whether the target is doing the breakpoint's condition | |
6519 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6520 | if (is_breakpoint (b) | |
6521 | && breakpoint_condition_evaluation_mode () | |
6522 | == condition_evaluation_target) | |
6523 | { | |
6a831f06 PA |
6524 | uiout->message (" (%pF evals)", |
6525 | string_field ("evaluated-by", | |
6526 | bp_condition_evaluator (b))); | |
b775012e | 6527 | } |
112e8700 | 6528 | uiout->text ("\n"); |
0101ce28 JJ |
6529 | } |
6530 | ||
0d381245 | 6531 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6532 | { |
4a64f543 | 6533 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6534 | uiout->text ("\tstop only in thread "); |
6535 | if (uiout->is_mi_like_p ()) | |
381befee | 6536 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6537 | else |
6538 | { | |
6539 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6540 | ||
112e8700 | 6541 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6542 | } |
112e8700 | 6543 | uiout->text ("\n"); |
c4093a6a | 6544 | } |
944b1b18 | 6545 | |
2ecee236 | 6546 | if (!part_of_multiple && b->task != -1) |
944b1b18 AB |
6547 | { |
6548 | uiout->text ("\tstop only in task "); | |
6549 | uiout->field_signed ("task", b->task); | |
6550 | uiout->text ("\n"); | |
6551 | } | |
6552 | ||
556ec64d YQ |
6553 | if (!part_of_multiple) |
6554 | { | |
6555 | if (b->hit_count) | |
31f56a27 YQ |
6556 | { |
6557 | /* FIXME should make an annotation for this. */ | |
6558 | if (is_catchpoint (b)) | |
112e8700 | 6559 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6560 | else if (is_tracepoint (b)) |
112e8700 | 6561 | uiout->text ("\ttracepoint"); |
31f56a27 | 6562 | else |
112e8700 SM |
6563 | uiout->text ("\tbreakpoint"); |
6564 | uiout->text (" already hit "); | |
381befee | 6565 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6566 | if (b->hit_count == 1) |
112e8700 | 6567 | uiout->text (" time\n"); |
31f56a27 | 6568 | else |
112e8700 | 6569 | uiout->text (" times\n"); |
31f56a27 | 6570 | } |
556ec64d YQ |
6571 | else |
6572 | { | |
31f56a27 | 6573 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6574 | if (uiout->is_mi_like_p ()) |
381befee | 6575 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6576 | } |
6577 | } | |
8b93c638 | 6578 | |
0d381245 | 6579 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6580 | { |
6581 | annotate_field (8); | |
6a831f06 PA |
6582 | uiout->message ("\tignore next %pF hits\n", |
6583 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6584 | } |
059fb39f | 6585 | |
816338b5 SS |
6586 | /* Note that an enable count of 1 corresponds to "enable once" |
6587 | behavior, which is reported by the combination of enablement and | |
6588 | disposition, so we don't need to mention it here. */ | |
6589 | if (!part_of_multiple && b->enable_count > 1) | |
6590 | { | |
6591 | annotate_field (8); | |
112e8700 | 6592 | uiout->text ("\tdisable after "); |
816338b5 SS |
6593 | /* Tweak the wording to clarify that ignore and enable counts |
6594 | are distinct, and have additive effect. */ | |
6595 | if (b->ignore_count) | |
112e8700 | 6596 | uiout->text ("additional "); |
816338b5 | 6597 | else |
112e8700 | 6598 | uiout->text ("next "); |
381befee | 6599 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6600 | uiout->text (" hits\n"); |
816338b5 SS |
6601 | } |
6602 | ||
f196051f SS |
6603 | if (!part_of_multiple && is_tracepoint (b)) |
6604 | { | |
6605 | struct tracepoint *tp = (struct tracepoint *) b; | |
6606 | ||
6607 | if (tp->traceframe_usage) | |
6608 | { | |
112e8700 | 6609 | uiout->text ("\ttrace buffer usage "); |
381befee | 6610 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6611 | uiout->text (" bytes\n"); |
f196051f SS |
6612 | } |
6613 | } | |
d3ce09f5 | 6614 | |
d1b0a7bf | 6615 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6616 | if (!part_of_multiple && l) |
c4093a6a JM |
6617 | { |
6618 | annotate_field (9); | |
9db0d853 SM |
6619 | |
6620 | bool use_fixed_output = | |
6621 | (uiout->test_flags (fix_breakpoint_script_output) | |
6622 | || fix_breakpoint_script_output_globally); | |
6623 | ||
6624 | gdb::optional<ui_out_emit_tuple> tuple_emitter; | |
6625 | gdb::optional<ui_out_emit_list> list_emitter; | |
6626 | ||
6627 | if (use_fixed_output) | |
6628 | list_emitter.emplace (uiout, "script"); | |
6629 | else | |
6630 | tuple_emitter.emplace (uiout, "script"); | |
6631 | ||
8b93c638 | 6632 | print_command_lines (uiout, l, 4); |
c4093a6a | 6633 | } |
d24317b4 | 6634 | |
d9b3f62e | 6635 | if (is_tracepoint (b)) |
1042e4c0 | 6636 | { |
d9b3f62e PA |
6637 | struct tracepoint *t = (struct tracepoint *) b; |
6638 | ||
6639 | if (!part_of_multiple && t->pass_count) | |
6640 | { | |
6641 | annotate_field (10); | |
112e8700 | 6642 | uiout->text ("\tpass count "); |
381befee | 6643 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6644 | uiout->text (" \n"); |
d9b3f62e | 6645 | } |
f2a8bc8a YQ |
6646 | |
6647 | /* Don't display it when tracepoint or tracepoint location is | |
6648 | pending. */ | |
6649 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6650 | { | |
6651 | annotate_field (11); | |
6652 | ||
112e8700 SM |
6653 | if (uiout->is_mi_like_p ()) |
6654 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6655 | loc->inserted ? "y" : "n"); |
6656 | else | |
6657 | { | |
6658 | if (loc->inserted) | |
112e8700 | 6659 | uiout->text ("\t"); |
f2a8bc8a | 6660 | else |
112e8700 SM |
6661 | uiout->text ("\tnot "); |
6662 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6663 | } |
6664 | } | |
1042e4c0 SS |
6665 | } |
6666 | ||
112e8700 | 6667 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6668 | { |
3a5c3e22 PA |
6669 | if (is_watchpoint (b)) |
6670 | { | |
6671 | struct watchpoint *w = (struct watchpoint *) b; | |
6672 | ||
a4c50be3 | 6673 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6674 | } |
264f9890 PA |
6675 | else if (b->locspec != nullptr) |
6676 | { | |
709438c7 | 6677 | const char *str = b->locspec->to_string (); |
264f9890 PA |
6678 | if (str != nullptr) |
6679 | uiout->field_string ("original-location", str); | |
6680 | } | |
d24317b4 | 6681 | } |
c01e038b TT |
6682 | |
6683 | return result; | |
c4093a6a | 6684 | } |
c5aa993b | 6685 | |
13674803 SM |
6686 | /* See breakpoint.h. */ |
6687 | ||
6688 | bool fix_multi_location_breakpoint_output_globally = false; | |
6689 | ||
0d381245 VP |
6690 | static void |
6691 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6692 | struct bp_location **last_loc, |
6c95b8df | 6693 | int allflag) |
0d381245 | 6694 | { |
79a45e25 | 6695 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6696 | bool use_fixed_output |
6697 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6698 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6699 | |
b4be1b06 | 6700 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6701 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6702 | allflag, false); | |
8d3788bd | 6703 | |
b4be1b06 SM |
6704 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6705 | are outside. */ | |
6706 | if (!use_fixed_output) | |
6707 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6708 | |
6709 | /* If this breakpoint has custom print function, | |
6710 | it's already printed. Otherwise, print individual | |
6711 | locations, if any. */ | |
c01e038b | 6712 | if (!printed || allflag) |
0d381245 | 6713 | { |
4a64f543 MS |
6714 | /* If breakpoint has a single location that is disabled, we |
6715 | print it as if it had several locations, since otherwise it's | |
6716 | hard to represent "breakpoint enabled, location disabled" | |
6717 | situation. | |
6718 | ||
6719 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6720 | internally, that's not a property exposed to users. |
6721 | ||
6722 | Likewise, while catchpoints may be implemented with | |
6723 | breakpoints (e.g., catch throw), that's not a property | |
6724 | exposed to users. We do however display the internal | |
6725 | breakpoint locations with "maint info breakpoints". */ | |
6726 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6727 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6728 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6729 | && (allflag |
b5fa468f TBA |
6730 | || (b->loc && (b->loc->next |
6731 | || !b->loc->enabled | |
6732 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6733 | { |
b4be1b06 SM |
6734 | gdb::optional<ui_out_emit_list> locations_list; |
6735 | ||
6736 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6737 | MI record. For later versions, place breakpoint locations in a | |
6738 | list. */ | |
6739 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6740 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6741 | |
b4be1b06 | 6742 | int n = 1; |
40cb8ca5 | 6743 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6744 | { |
b4be1b06 | 6745 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6746 | print_one_breakpoint_location (b, loc, n, last_loc, |
6747 | allflag, allflag); | |
40cb8ca5 | 6748 | n++; |
8d3788bd | 6749 | } |
0d381245 VP |
6750 | } |
6751 | } | |
6752 | } | |
6753 | ||
a6d9a66e UW |
6754 | static int |
6755 | breakpoint_address_bits (struct breakpoint *b) | |
6756 | { | |
6757 | int print_address_bits = 0; | |
a6d9a66e | 6758 | |
40cb8ca5 | 6759 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6760 | { |
6e14e441 PA |
6761 | if (!bl_address_is_meaningful (loc)) |
6762 | continue; | |
c7437ca6 | 6763 | |
6e14e441 | 6764 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6765 | if (addr_bit > print_address_bits) |
6766 | print_address_bits = addr_bit; | |
6767 | } | |
6768 | ||
6769 | return print_address_bits; | |
6770 | } | |
0d381245 | 6771 | |
65630365 | 6772 | /* See breakpoint.h. */ |
c5aa993b | 6773 | |
65630365 PA |
6774 | void |
6775 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6776 | { |
a6d9a66e | 6777 | struct bp_location *dummy_loc = NULL; |
65630365 | 6778 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6779 | } |
c5aa993b | 6780 | |
09d682a4 TT |
6781 | /* Return true if this breakpoint was set by the user, false if it is |
6782 | internal or momentary. */ | |
6783 | ||
6784 | int | |
6785 | user_breakpoint_p (struct breakpoint *b) | |
6786 | { | |
46c6471b | 6787 | return b->number > 0; |
09d682a4 TT |
6788 | } |
6789 | ||
93daf339 TT |
6790 | /* See breakpoint.h. */ |
6791 | ||
6792 | int | |
6793 | pending_breakpoint_p (struct breakpoint *b) | |
6794 | { | |
6795 | return b->loc == NULL; | |
6796 | } | |
6797 | ||
5c458ae8 SM |
6798 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6799 | ||
6800 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6801 | understood by number_or_range_parser. Only breakpoints included in this | |
6802 | list are then printed. | |
6803 | ||
6804 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6805 | ||
6806 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6807 | ones for which it returns true. | |
6808 | ||
6809 | Return the total number of breakpoints listed. */ | |
c906108c | 6810 | |
d77f58be | 6811 | static int |
5c458ae8 | 6812 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6813 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6814 | { |
a6d9a66e | 6815 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6816 | int nr_printable_breakpoints; |
79a45b7d | 6817 | struct value_print_options opts; |
a6d9a66e | 6818 | int print_address_bits = 0; |
269b11a2 | 6819 | int print_type_col_width = 14; |
79a45e25 | 6820 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6821 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6822 | |
79a45b7d TT |
6823 | get_user_print_options (&opts); |
6824 | ||
4a64f543 MS |
6825 | /* Compute the number of rows in the table, as well as the size |
6826 | required for address fields. */ | |
7f3b0473 | 6827 | nr_printable_breakpoints = 0; |
43892fdf | 6828 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6829 | { |
6830 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6831 | if (filter && !filter (b)) | |
6832 | continue; | |
6833 | ||
5c458ae8 | 6834 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6835 | accept. Skip the others. */ |
5c458ae8 | 6836 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6837 | { |
5c458ae8 | 6838 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6839 | continue; |
5c458ae8 | 6840 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6841 | continue; |
6842 | } | |
269b11a2 | 6843 | |
5c458ae8 | 6844 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6845 | { |
6846 | int addr_bit, type_len; | |
a6d9a66e | 6847 | |
e5a67952 MS |
6848 | addr_bit = breakpoint_address_bits (b); |
6849 | if (addr_bit > print_address_bits) | |
6850 | print_address_bits = addr_bit; | |
269b11a2 | 6851 | |
e5a67952 MS |
6852 | type_len = strlen (bptype_string (b->type)); |
6853 | if (type_len > print_type_col_width) | |
6854 | print_type_col_width = type_len; | |
6855 | ||
6856 | nr_printable_breakpoints++; | |
6857 | } | |
6858 | } | |
7f3b0473 | 6859 | |
4a2b031d TT |
6860 | { |
6861 | ui_out_emit_table table_emitter (uiout, | |
6862 | opts.addressprint ? 6 : 5, | |
6863 | nr_printable_breakpoints, | |
6864 | "BreakpointTable"); | |
6865 | ||
6866 | if (nr_printable_breakpoints > 0) | |
6867 | annotate_breakpoints_headers (); | |
6868 | if (nr_printable_breakpoints > 0) | |
6869 | annotate_field (0); | |
6870 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6871 | if (nr_printable_breakpoints > 0) | |
6872 | annotate_field (1); | |
6873 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6874 | if (nr_printable_breakpoints > 0) | |
6875 | annotate_field (2); | |
6876 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6877 | if (nr_printable_breakpoints > 0) | |
6878 | annotate_field (3); | |
6879 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6880 | if (opts.addressprint) | |
6881 | { | |
6882 | if (nr_printable_breakpoints > 0) | |
6883 | annotate_field (4); | |
6884 | if (print_address_bits <= 32) | |
6885 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6886 | else | |
6887 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6888 | } | |
6889 | if (nr_printable_breakpoints > 0) | |
6890 | annotate_field (5); | |
6891 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6892 | uiout->table_body (); | |
6893 | if (nr_printable_breakpoints > 0) | |
6894 | annotate_breakpoints_table (); | |
6895 | ||
43892fdf | 6896 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6897 | { |
6898 | QUIT; | |
6899 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6900 | if (filter && !filter (b)) | |
6901 | continue; | |
e5a67952 | 6902 | |
5c458ae8 | 6903 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6904 | accept. Skip the others. */ |
e5a67952 | 6905 | |
5c458ae8 | 6906 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6907 | { |
5c458ae8 | 6908 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6909 | { |
5c458ae8 | 6910 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6911 | continue; |
6912 | } | |
6913 | else /* all others */ | |
6914 | { | |
5c458ae8 | 6915 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6916 | continue; |
6917 | } | |
6918 | } | |
6919 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6920 | show_internal is set. */ |
6921 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6922 | { |
6923 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6924 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6925 | if (loc->disabled_by_cond) |
6926 | has_disabled_by_cond_location = true; | |
6927 | } | |
4a2b031d TT |
6928 | } |
6929 | } | |
698384cd | 6930 | |
7f3b0473 | 6931 | if (nr_printable_breakpoints == 0) |
c906108c | 6932 | { |
4a64f543 MS |
6933 | /* If there's a filter, let the caller decide how to report |
6934 | empty list. */ | |
d77f58be SS |
6935 | if (!filter) |
6936 | { | |
5c458ae8 | 6937 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6938 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6939 | else |
112e8700 | 6940 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6941 | bp_num_list); |
d77f58be | 6942 | } |
c906108c SS |
6943 | } |
6944 | else | |
c4093a6a | 6945 | { |
a6d9a66e UW |
6946 | if (last_loc && !server_command) |
6947 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6948 | |
85c88e2a | 6949 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6950 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6951 | "location.\n")); | |
c4093a6a | 6952 | } |
c906108c | 6953 | |
4a64f543 | 6954 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6955 | there have been breakpoints? */ |
c906108c | 6956 | annotate_breakpoints_table_end (); |
d77f58be SS |
6957 | |
6958 | return nr_printable_breakpoints; | |
c906108c SS |
6959 | } |
6960 | ||
ad443146 SS |
6961 | /* Display the value of default-collect in a way that is generally |
6962 | compatible with the breakpoint list. */ | |
6963 | ||
6964 | static void | |
6965 | default_collect_info (void) | |
6966 | { | |
79a45e25 PA |
6967 | struct ui_out *uiout = current_uiout; |
6968 | ||
ad443146 SS |
6969 | /* If it has no value (which is frequently the case), say nothing; a |
6970 | message like "No default-collect." gets in user's face when it's | |
6971 | not wanted. */ | |
e0700ba4 | 6972 | if (default_collect.empty ()) |
ad443146 SS |
6973 | return; |
6974 | ||
6975 | /* The following phrase lines up nicely with per-tracepoint collect | |
6976 | actions. */ | |
112e8700 SM |
6977 | uiout->text ("default collect "); |
6978 | uiout->field_string ("default-collect", default_collect); | |
6979 | uiout->text (" \n"); | |
ad443146 SS |
6980 | } |
6981 | ||
c906108c | 6982 | static void |
0b39b52e | 6983 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6984 | { |
5c458ae8 | 6985 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6986 | |
6987 | default_collect_info (); | |
d77f58be SS |
6988 | } |
6989 | ||
6990 | static void | |
1d12d88f | 6991 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6992 | { |
5c458ae8 | 6993 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6994 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6995 | |
6996 | if (num_printed == 0) | |
6997 | { | |
e5a67952 | 6998 | if (args == NULL || *args == '\0') |
112e8700 | 6999 | uiout->message ("No watchpoints.\n"); |
d77f58be | 7000 | else |
112e8700 | 7001 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 7002 | } |
c906108c SS |
7003 | } |
7004 | ||
7a292a7a | 7005 | static void |
4495129a | 7006 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 7007 | { |
5c458ae8 | 7008 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
7009 | |
7010 | default_collect_info (); | |
c906108c SS |
7011 | } |
7012 | ||
d8de7963 | 7013 | static bool |
714835d5 | 7014 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 7015 | struct program_space *pspace, |
714835d5 | 7016 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 7017 | { |
40cb8ca5 | 7018 | for (bp_location *bl : b->locations ()) |
0d381245 | 7019 | { |
6c95b8df PA |
7020 | if (bl->pspace == pspace |
7021 | && bl->address == pc | |
0d381245 | 7022 | && (!overlay_debugging || bl->section == section)) |
d8de7963 | 7023 | return true; |
0d381245 | 7024 | } |
d8de7963 | 7025 | return false; |
0d381245 VP |
7026 | } |
7027 | ||
bd21b6c9 | 7028 | /* See breakpoint.h. */ |
c906108c | 7029 | |
bd21b6c9 | 7030 | void |
6c95b8df PA |
7031 | describe_other_breakpoints (struct gdbarch *gdbarch, |
7032 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 7033 | struct obj_section *section, int thread) |
c906108c | 7034 | { |
52f0bd74 | 7035 | int others = 0; |
c906108c | 7036 | |
43892fdf | 7037 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 7038 | others += (user_breakpoint_p (b) |
dda83cd7 | 7039 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 7040 | |
c906108c SS |
7041 | if (others > 0) |
7042 | { | |
a3f17187 | 7043 | if (others == 1) |
6cb06a8c | 7044 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 7045 | else /* if (others == ???) */ |
6cb06a8c | 7046 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 7047 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 7048 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
7049 | { |
7050 | others--; | |
6cb06a8c | 7051 | gdb_printf ("%d", b->number); |
0d381245 | 7052 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 7053 | gdb_printf (" (all threads)"); |
0d381245 | 7054 | else if (b->thread != -1) |
ce068c5f AB |
7055 | { |
7056 | struct thread_info *thr = find_thread_global_id (b->thread); | |
7057 | gdb_printf (" (thread %s)", print_thread_id (thr)); | |
7058 | } | |
8282ad74 | 7059 | else if (b->task != -1) |
f1f517e8 | 7060 | gdb_printf (" (task %d)", b->task); |
6cb06a8c TT |
7061 | gdb_printf ("%s%s ", |
7062 | ((b->enable_state == bp_disabled | |
7063 | || b->enable_state == bp_call_disabled) | |
7064 | ? " (disabled)" | |
7065 | : ""), | |
7066 | (others > 1) ? "," | |
7067 | : ((others == 1) ? " and" : "")); | |
0d381245 | 7068 | } |
6a831f06 PA |
7069 | current_uiout->message (_("also set at pc %ps.\n"), |
7070 | styled_string (address_style.style (), | |
7071 | paddress (gdbarch, pc))); | |
c906108c SS |
7072 | } |
7073 | } | |
7074 | \f | |
c906108c | 7075 | |
cb1e4e32 PA |
7076 | /* Return true iff it is meaningful to use the address member of LOC. |
7077 | For some breakpoint types, the locations' address members are | |
7078 | irrelevant and it makes no sense to attempt to compare them to | |
7079 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 7080 | |
cb1e4e32 PA |
7081 | More specifically, software watchpoints and catchpoints that are |
7082 | not backed by breakpoints always have a zero valued location | |
7083 | address and we don't want to mark breakpoints of any of these types | |
7084 | to be a duplicate of an actual breakpoint location at address | |
7085 | zero. */ | |
e4f237da | 7086 | |
cb1e4e32 PA |
7087 | static bool |
7088 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 7089 | { |
cb1e4e32 | 7090 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
7091 | } |
7092 | ||
7093 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
7094 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
7095 | ||
d8de7963 | 7096 | static bool |
b2ff9ed3 AB |
7097 | watchpoint_locations_match (const struct bp_location *loc1, |
7098 | const struct bp_location *loc2) | |
2d134ed3 | 7099 | { |
3a5c3e22 PA |
7100 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
7101 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
7102 | ||
7103 | /* Both of them must exist. */ | |
7104 | gdb_assert (w1 != NULL); | |
7105 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 7106 | |
4a64f543 MS |
7107 | /* If the target can evaluate the condition expression in hardware, |
7108 | then we we need to insert both watchpoints even if they are at | |
7109 | the same place. Otherwise the watchpoint will only trigger when | |
7110 | the condition of whichever watchpoint was inserted evaluates to | |
7111 | true, not giving a chance for GDB to check the condition of the | |
7112 | other watchpoint. */ | |
3a5c3e22 | 7113 | if ((w1->cond_exp |
4a64f543 MS |
7114 | && target_can_accel_watchpoint_condition (loc1->address, |
7115 | loc1->length, | |
0cf6dd15 | 7116 | loc1->watchpoint_type, |
4d01a485 | 7117 | w1->cond_exp.get ())) |
3a5c3e22 | 7118 | || (w2->cond_exp |
4a64f543 MS |
7119 | && target_can_accel_watchpoint_condition (loc2->address, |
7120 | loc2->length, | |
0cf6dd15 | 7121 | loc2->watchpoint_type, |
4d01a485 | 7122 | w2->cond_exp.get ()))) |
d8de7963 | 7123 | return false; |
0cf6dd15 | 7124 | |
85d721b8 PA |
7125 | /* Note that this checks the owner's type, not the location's. In |
7126 | case the target does not support read watchpoints, but does | |
7127 | support access watchpoints, we'll have bp_read_watchpoint | |
7128 | watchpoints with hw_access locations. Those should be considered | |
7129 | duplicates of hw_read locations. The hw_read locations will | |
7130 | become hw_access locations later. */ | |
2d134ed3 PA |
7131 | return (loc1->owner->type == loc2->owner->type |
7132 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7133 | && loc1->address == loc2->address | |
7134 | && loc1->length == loc2->length); | |
e4f237da KB |
7135 | } |
7136 | ||
31e77af2 | 7137 | /* See breakpoint.h. */ |
6c95b8df | 7138 | |
31e77af2 | 7139 | int |
accd0bcd YQ |
7140 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
7141 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 7142 | { |
f5656ead | 7143 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7144 | || aspace1 == aspace2) |
7145 | && addr1 == addr2); | |
7146 | } | |
7147 | ||
f1310107 TJB |
7148 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7149 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7150 | matches ASPACE2. On targets that have global breakpoints, the address | |
7151 | space doesn't really matter. */ | |
7152 | ||
d8de7963 | 7153 | static bool |
accd0bcd YQ |
7154 | breakpoint_address_match_range (const address_space *aspace1, |
7155 | CORE_ADDR addr1, | |
7156 | int len1, const address_space *aspace2, | |
f1310107 TJB |
7157 | CORE_ADDR addr2) |
7158 | { | |
f5656ead | 7159 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7160 | || aspace1 == aspace2) |
7161 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7162 | } | |
7163 | ||
7164 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7165 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7166 | matches the breakpoint's address space. On targets that have global | |
7167 | breakpoints, the address space doesn't really matter. */ | |
7168 | ||
d8de7963 | 7169 | static bool |
f1310107 | 7170 | breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 7171 | const address_space *aspace, |
f1310107 TJB |
7172 | CORE_ADDR addr) |
7173 | { | |
7174 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7175 | aspace, addr) | |
7176 | || (bl->length | |
7177 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7178 | bl->address, bl->length, | |
7179 | aspace, addr))); | |
7180 | } | |
7181 | ||
d35ae833 PA |
7182 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
7183 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
7184 | match happens only if ASPACE matches the breakpoint's address | |
7185 | space. On targets that have global breakpoints, the address space | |
7186 | doesn't really matter. */ | |
7187 | ||
d8de7963 | 7188 | static bool |
d35ae833 | 7189 | breakpoint_location_address_range_overlap (struct bp_location *bl, |
accd0bcd | 7190 | const address_space *aspace, |
d35ae833 PA |
7191 | CORE_ADDR addr, int len) |
7192 | { | |
7193 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7194 | || bl->pspace->aspace == aspace) | |
7195 | { | |
7196 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7197 | ||
7198 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7199 | return 1; | |
7200 | } | |
7201 | return 0; | |
7202 | } | |
7203 | ||
1e4d1764 YQ |
7204 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7205 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7206 | true, otherwise returns false. */ | |
7207 | ||
d8de7963 | 7208 | static bool |
b2ff9ed3 AB |
7209 | tracepoint_locations_match (const struct bp_location *loc1, |
7210 | const struct bp_location *loc2) | |
1e4d1764 YQ |
7211 | { |
7212 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7213 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7214 | locations at the same address of different tracepoints are regarded as | |
7215 | different locations. */ | |
7216 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7217 | else | |
d8de7963 | 7218 | return false; |
1e4d1764 YQ |
7219 | } |
7220 | ||
2d134ed3 | 7221 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 7222 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
7223 | the same location. If SW_HW_BPS_MATCH is true, then software |
7224 | breakpoint locations and hardware breakpoint locations match, | |
7225 | otherwise they don't. */ | |
2d134ed3 | 7226 | |
d8de7963 | 7227 | static bool |
b2ff9ed3 AB |
7228 | breakpoint_locations_match (const struct bp_location *loc1, |
7229 | const struct bp_location *loc2, | |
7f32a4d5 | 7230 | bool sw_hw_bps_match) |
2d134ed3 | 7231 | { |
2bdf28a0 JK |
7232 | int hw_point1, hw_point2; |
7233 | ||
7234 | /* Both of them must not be in moribund_locations. */ | |
7235 | gdb_assert (loc1->owner != NULL); | |
7236 | gdb_assert (loc2->owner != NULL); | |
7237 | ||
7238 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7239 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7240 | |
7241 | if (hw_point1 != hw_point2) | |
d8de7963 | 7242 | return false; |
2d134ed3 PA |
7243 | else if (hw_point1) |
7244 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7245 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7246 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7247 | else |
7f32a4d5 PA |
7248 | /* We compare bp_location.length in order to cover ranged |
7249 | breakpoints. Keep this in sync with | |
7250 | bp_location_is_less_than. */ | |
f1310107 TJB |
7251 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
7252 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 7253 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 7254 | && loc1->length == loc2->length); |
2d134ed3 PA |
7255 | } |
7256 | ||
76897487 KB |
7257 | static void |
7258 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
d8de7963 | 7259 | int bnum, bool have_bnum) |
76897487 | 7260 | { |
f63fbe86 MS |
7261 | /* The longest string possibly returned by hex_string_custom |
7262 | is 50 chars. These must be at least that big for safety. */ | |
7263 | char astr1[64]; | |
7264 | char astr2[64]; | |
76897487 | 7265 | |
bb599908 PH |
7266 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7267 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7268 | if (have_bnum) |
8a3fe4f8 | 7269 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 7270 | bnum, astr1, astr2); |
76897487 | 7271 | else |
8a3fe4f8 | 7272 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7273 | } |
7274 | ||
4a64f543 MS |
7275 | /* Adjust a breakpoint's address to account for architectural |
7276 | constraints on breakpoint placement. Return the adjusted address. | |
7277 | Note: Very few targets require this kind of adjustment. For most | |
7278 | targets, this function is simply the identity function. */ | |
76897487 KB |
7279 | |
7280 | static CORE_ADDR | |
a6d9a66e | 7281 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
60270718 AB |
7282 | CORE_ADDR bpaddr, enum bptype bptype, |
7283 | struct program_space *pspace) | |
76897487 | 7284 | { |
60270718 AB |
7285 | gdb_assert (pspace != nullptr); |
7286 | ||
a0de8c21 YQ |
7287 | if (bptype == bp_watchpoint |
7288 | || bptype == bp_hardware_watchpoint | |
7289 | || bptype == bp_read_watchpoint | |
7290 | || bptype == bp_access_watchpoint | |
7291 | || bptype == bp_catchpoint) | |
88f7da05 KB |
7292 | { |
7293 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 7294 | have their addresses modified. */ |
88f7da05 KB |
7295 | return bpaddr; |
7296 | } | |
7c16b83e PA |
7297 | else if (bptype == bp_single_step) |
7298 | { | |
7299 | /* Single-step breakpoints should not have their addresses | |
7300 | modified. If there's any architectural constrain that | |
7301 | applies to this address, then it should have already been | |
7302 | taken into account when the breakpoint was created in the | |
7303 | first place. If we didn't do this, stepping through e.g., | |
7304 | Thumb-2 IT blocks would break. */ | |
7305 | return bpaddr; | |
7306 | } | |
76897487 KB |
7307 | else |
7308 | { | |
a0de8c21 YQ |
7309 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7310 | ||
60270718 AB |
7311 | /* Some targets have architectural constraints on the placement |
7312 | of breakpoint instructions. Obtain the adjusted address. */ | |
a0de8c21 YQ |
7313 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) |
7314 | { | |
60270718 AB |
7315 | /* Targets that implement this adjustment function will likely |
7316 | inspect either the symbol table, target memory at BPADDR, or | |
7317 | even state registers, so ensure a suitable thread (and its | |
7318 | associated program space) are currently selected. */ | |
7319 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
7320 | switch_to_program_space_and_thread (pspace); | |
7321 | adjusted_bpaddr | |
7322 | = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
a0de8c21 | 7323 | } |
76897487 | 7324 | |
d88cb738 LM |
7325 | adjusted_bpaddr |
7326 | = gdbarch_remove_non_address_bits (gdbarch, adjusted_bpaddr); | |
76897487 KB |
7327 | |
7328 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7329 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7330 | is required. */ |
7331 | if (adjusted_bpaddr != bpaddr) | |
d8de7963 | 7332 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, false); |
76897487 KB |
7333 | |
7334 | return adjusted_bpaddr; | |
7335 | } | |
7336 | } | |
7337 | ||
cb1e4e32 PA |
7338 | static bp_loc_type |
7339 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7340 | { |
cb1e4e32 | 7341 | switch (type) |
e049a4b5 DJ |
7342 | { |
7343 | case bp_breakpoint: | |
7c16b83e | 7344 | case bp_single_step: |
e049a4b5 DJ |
7345 | case bp_until: |
7346 | case bp_finish: | |
7347 | case bp_longjmp: | |
7348 | case bp_longjmp_resume: | |
e2e4d78b | 7349 | case bp_longjmp_call_dummy: |
186c406b TT |
7350 | case bp_exception: |
7351 | case bp_exception_resume: | |
e049a4b5 | 7352 | case bp_step_resume: |
2c03e5be | 7353 | case bp_hp_step_resume: |
e049a4b5 DJ |
7354 | case bp_watchpoint_scope: |
7355 | case bp_call_dummy: | |
aa7d318d | 7356 | case bp_std_terminate: |
e049a4b5 DJ |
7357 | case bp_shlib_event: |
7358 | case bp_thread_event: | |
7359 | case bp_overlay_event: | |
4efc6507 | 7360 | case bp_jit_event: |
0fd8e87f | 7361 | case bp_longjmp_master: |
aa7d318d | 7362 | case bp_std_terminate_master: |
186c406b | 7363 | case bp_exception_master: |
0e30163f JK |
7364 | case bp_gnu_ifunc_resolver: |
7365 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7366 | case bp_dprintf: |
cb1e4e32 | 7367 | return bp_loc_software_breakpoint; |
e049a4b5 | 7368 | case bp_hardware_breakpoint: |
cb1e4e32 | 7369 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7370 | case bp_hardware_watchpoint: |
7371 | case bp_read_watchpoint: | |
7372 | case bp_access_watchpoint: | |
cb1e4e32 | 7373 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7374 | case bp_watchpoint: |
6e14e441 | 7375 | return bp_loc_software_watchpoint; |
ce78b96d | 7376 | case bp_catchpoint: |
15c3d785 PA |
7377 | case bp_tracepoint: |
7378 | case bp_fast_tracepoint: | |
0fb4aa4b | 7379 | case bp_static_tracepoint: |
7b572efb | 7380 | case bp_static_marker_tracepoint: |
cb1e4e32 | 7381 | return bp_loc_other; |
e049a4b5 | 7382 | default: |
f34652de | 7383 | internal_error (_("unknown breakpoint type")); |
e049a4b5 | 7384 | } |
cb1e4e32 PA |
7385 | } |
7386 | ||
7387 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7388 | { | |
7389 | this->owner = owner; | |
7390 | this->cond_bytecode = NULL; | |
7391 | this->shlib_disabled = 0; | |
7392 | this->enabled = 1; | |
b5fa468f | 7393 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7394 | |
7395 | this->loc_type = type; | |
e049a4b5 | 7396 | |
cb1e4e32 PA |
7397 | if (this->loc_type == bp_loc_software_breakpoint |
7398 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7399 | mark_breakpoint_location_modified (this); | |
7400 | ||
b6433ede | 7401 | incref (); |
cb1e4e32 PA |
7402 | } |
7403 | ||
7404 | bp_location::bp_location (breakpoint *owner) | |
7405 | : bp_location::bp_location (owner, | |
7406 | bp_location_from_bp_type (owner->type)) | |
7407 | { | |
28010a5d PA |
7408 | } |
7409 | ||
f431efe5 PA |
7410 | /* Decrement reference count. If the reference count reaches 0, |
7411 | destroy the bp_location. Sets *BLP to NULL. */ | |
7412 | ||
7413 | static void | |
7414 | decref_bp_location (struct bp_location **blp) | |
7415 | { | |
b6433ede | 7416 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7417 | *blp = NULL; |
7418 | } | |
7419 | ||
346774a9 | 7420 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7421 | |
b270e6f9 TT |
7422 | static breakpoint * |
7423 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7424 | { |
346774a9 | 7425 | struct breakpoint *b1; |
b270e6f9 | 7426 | struct breakpoint *result = b.get (); |
c906108c | 7427 | |
346774a9 PA |
7428 | /* Add this breakpoint to the end of the chain so that a list of |
7429 | breakpoints will come out in order of increasing numbers. */ | |
7430 | ||
7431 | b1 = breakpoint_chain; | |
7432 | if (b1 == 0) | |
b270e6f9 | 7433 | breakpoint_chain = b.release (); |
346774a9 PA |
7434 | else |
7435 | { | |
7436 | while (b1->next) | |
7437 | b1 = b1->next; | |
b270e6f9 | 7438 | b1->next = b.release (); |
346774a9 | 7439 | } |
b270e6f9 TT |
7440 | |
7441 | return result; | |
346774a9 PA |
7442 | } |
7443 | ||
0ba852ab | 7444 | /* Initialize loc->function_name. */ |
0e30163f | 7445 | |
0d381245 | 7446 | static void |
0ba852ab | 7447 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7448 | { |
2bdf28a0 JK |
7449 | gdb_assert (loc->owner != NULL); |
7450 | ||
0d381245 | 7451 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7452 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7453 | || is_tracepoint (loc->owner)) |
0d381245 | 7454 | { |
2c02bd72 | 7455 | const char *function_name; |
0e30163f | 7456 | |
3467ec66 | 7457 | if (loc->msymbol != NULL |
60f62e2b SM |
7458 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7459 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7460 | { |
7461 | struct breakpoint *b = loc->owner; | |
7462 | ||
c9d95fa3 | 7463 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7464 | |
7465 | if (b->type == bp_breakpoint && b->loc == loc | |
7466 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7467 | { |
7468 | /* Create only the whole new breakpoint of this type but do not | |
7469 | mess more complicated breakpoints with multiple locations. */ | |
7470 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7471 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7472 | breakpoint. */ |
3467ec66 | 7473 | loc->related_address = loc->address; |
0e30163f JK |
7474 | } |
7475 | } | |
3467ec66 PA |
7476 | else |
7477 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7478 | |
2c02bd72 | 7479 | if (function_name) |
23d6ee64 | 7480 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7481 | } |
7482 | } | |
7483 | ||
a6d9a66e | 7484 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7485 | struct gdbarch * |
a6d9a66e UW |
7486 | get_sal_arch (struct symtab_and_line sal) |
7487 | { | |
7488 | if (sal.section) | |
08feed99 | 7489 | return sal.section->objfile->arch (); |
a6d9a66e | 7490 | if (sal.symtab) |
3c86fae3 | 7491 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7492 | |
7493 | return NULL; | |
7494 | } | |
7495 | ||
53a5351d | 7496 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7497 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7498 | initiated the operation. */ | |
c906108c SS |
7499 | |
7500 | void | |
186c406b | 7501 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7502 | { |
5d5658a1 | 7503 | int thread = tp->global_num; |
0fd8e87f UW |
7504 | |
7505 | /* To avoid having to rescan all objfile symbols at every step, | |
7506 | we maintain a list of continually-inserted but always disabled | |
7507 | longjmp "master" breakpoints. Here, we simply create momentary | |
7508 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7509 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7510 | if (b->pspace == current_program_space |
186c406b TT |
7511 | && (b->type == bp_longjmp_master |
7512 | || b->type == bp_exception_master)) | |
0fd8e87f | 7513 | { |
06edf0c0 | 7514 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
e2e4d78b JK |
7515 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7516 | after their removal. */ | |
7ab97995 | 7517 | momentary_breakpoint_from_master (b, type, 1, thread); |
0fd8e87f | 7518 | } |
186c406b TT |
7519 | |
7520 | tp->initiating_frame = frame; | |
c906108c SS |
7521 | } |
7522 | ||
611c83ae | 7523 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7524 | void |
611c83ae | 7525 | delete_longjmp_breakpoint (int thread) |
c906108c | 7526 | { |
1428b37a | 7527 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7528 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7529 | { |
7530 | if (b->thread == thread) | |
7531 | delete_breakpoint (b); | |
7532 | } | |
c906108c SS |
7533 | } |
7534 | ||
f59f708a PA |
7535 | void |
7536 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7537 | { | |
1428b37a | 7538 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7539 | if (b->type == bp_longjmp || b->type == bp_exception) |
7540 | { | |
7541 | if (b->thread == thread) | |
7542 | b->disposition = disp_del_at_next_stop; | |
7543 | } | |
7544 | } | |
7545 | ||
e2e4d78b JK |
7546 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7547 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7548 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7549 | breakpoints. */ | |
7550 | ||
7551 | struct breakpoint * | |
7552 | set_longjmp_breakpoint_for_call_dummy (void) | |
7553 | { | |
43892fdf | 7554 | breakpoint *retval = nullptr; |
e2e4d78b | 7555 | |
43892fdf | 7556 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7557 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7558 | { | |
7ab97995 PA |
7559 | int thread = inferior_thread ()->global_num; |
7560 | breakpoint *new_b | |
7561 | = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7562 | 1, thread); | |
e2e4d78b JK |
7563 | |
7564 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7565 | ||
7566 | gdb_assert (new_b->related_breakpoint == new_b); | |
7567 | if (retval == NULL) | |
7568 | retval = new_b; | |
7569 | new_b->related_breakpoint = retval; | |
7570 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7571 | retval = retval->related_breakpoint; | |
7572 | retval->related_breakpoint = new_b; | |
7573 | } | |
7574 | ||
7575 | return retval; | |
7576 | } | |
7577 | ||
7578 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7579 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7580 | stack. |
7581 | ||
b4b3e2de AB |
7582 | If the unwind fails then there is not sufficient information to discard |
7583 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7584 | be cleaned up next time this function is called from a location where | |
7585 | unwinding is possible. */ | |
e2e4d78b JK |
7586 | |
7587 | void | |
b67a2c6f | 7588 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7589 | { |
7590 | struct breakpoint *b, *b_tmp; | |
7591 | ||
7592 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7593 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7594 | { |
7595 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7596 | ||
b4b3e2de AB |
7597 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7598 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7599 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7600 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7601 | |
7602 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7603 | more to do. Or, if the dummy frame associated with the | |
7604 | bp_call_dummy is still on the stack then we need to leave this | |
7605 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7606 | if (dummy_b->type != bp_call_dummy |
7607 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7608 | continue; | |
b4b3e2de AB |
7609 | |
7610 | /* We didn't find the dummy frame on the stack, this could be | |
7611 | because we have longjmp'd to a stack frame that is previous to | |
7612 | the dummy frame, or it could be because the stack unwind is | |
7613 | broken at some point between the longjmp frame and the dummy | |
7614 | frame. | |
7615 | ||
7616 | Next we figure out why the stack unwind stopped. If it looks | |
7617 | like the unwind is complete then we assume the dummy frame has | |
7618 | been jumped over, however, if the unwind stopped for an | |
7619 | unexpected reason then we assume the stack unwind is currently | |
7620 | broken, and that we will (eventually) return to the dummy | |
7621 | frame. | |
7622 | ||
7623 | It might be tempting to consider using frame_id_inner here, but | |
7624 | that is not safe. There is no guarantee that the stack frames | |
7625 | we are looking at here are even on the same stack as the | |
7626 | original dummy frame, hence frame_id_inner can't be used. See | |
7627 | the comments on frame_id_inner for more details. */ | |
7628 | bool unwind_finished_unexpectedly = false; | |
bd2b40ac | 7629 | for (frame_info_ptr fi = get_current_frame (); fi != nullptr; ) |
b4b3e2de | 7630 | { |
bd2b40ac | 7631 | frame_info_ptr prev = get_prev_frame (fi); |
b4b3e2de AB |
7632 | if (prev == nullptr) |
7633 | { | |
7634 | /* FI is the last stack frame. Why did this frame not | |
7635 | unwind further? */ | |
7636 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7637 | if (stop_reason != UNWIND_NO_REASON | |
7638 | && stop_reason != UNWIND_OUTERMOST) | |
7639 | unwind_finished_unexpectedly = true; | |
7640 | } | |
7641 | fi = prev; | |
7642 | } | |
7643 | if (unwind_finished_unexpectedly) | |
7644 | continue; | |
7645 | ||
00431a78 | 7646 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7647 | |
7648 | while (b->related_breakpoint != b) | |
7649 | { | |
7650 | if (b_tmp == b->related_breakpoint) | |
7651 | b_tmp = b->related_breakpoint->next; | |
7652 | delete_breakpoint (b->related_breakpoint); | |
7653 | } | |
7654 | delete_breakpoint (b); | |
7655 | } | |
7656 | } | |
7657 | ||
1900040c MS |
7658 | void |
7659 | enable_overlay_breakpoints (void) | |
7660 | { | |
43892fdf | 7661 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7662 | if (b->type == bp_overlay_event) |
01add95b SM |
7663 | { |
7664 | b->enable_state = bp_enabled; | |
7665 | update_global_location_list (UGLL_MAY_INSERT); | |
7666 | overlay_events_enabled = 1; | |
7667 | } | |
1900040c MS |
7668 | } |
7669 | ||
7670 | void | |
7671 | disable_overlay_breakpoints (void) | |
7672 | { | |
43892fdf | 7673 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7674 | if (b->type == bp_overlay_event) |
01add95b SM |
7675 | { |
7676 | b->enable_state = bp_disabled; | |
7677 | update_global_location_list (UGLL_DONT_INSERT); | |
7678 | overlay_events_enabled = 0; | |
7679 | } | |
1900040c MS |
7680 | } |
7681 | ||
aa7d318d TT |
7682 | /* Set an active std::terminate breakpoint for each std::terminate |
7683 | master breakpoint. */ | |
7684 | void | |
7685 | set_std_terminate_breakpoint (void) | |
7686 | { | |
1428b37a | 7687 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7688 | if (b->pspace == current_program_space |
7689 | && b->type == bp_std_terminate_master) | |
7690 | { | |
7ab97995 PA |
7691 | momentary_breakpoint_from_master (b, bp_std_terminate, 1, |
7692 | inferior_thread ()->global_num); | |
aa7d318d TT |
7693 | } |
7694 | } | |
7695 | ||
7696 | /* Delete all the std::terminate breakpoints. */ | |
7697 | void | |
7698 | delete_std_terminate_breakpoint (void) | |
7699 | { | |
1428b37a | 7700 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7701 | if (b->type == bp_std_terminate) |
7702 | delete_breakpoint (b); | |
7703 | } | |
7704 | ||
c4093a6a | 7705 | struct breakpoint * |
a6d9a66e | 7706 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7707 | { |
7708 | struct breakpoint *b; | |
c4093a6a | 7709 | |
9efa3c7f | 7710 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
06edf0c0 | 7711 | |
b5de0fa7 | 7712 | b->enable_state = bp_enabled; |
264f9890 PA |
7713 | /* locspec has to be used or breakpoint_re_set will delete me. */ |
7714 | b->locspec = new_address_location_spec (b->loc->address, NULL, 0); | |
c4093a6a | 7715 | |
44702360 | 7716 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7717 | |
c4093a6a JM |
7718 | return b; |
7719 | } | |
7720 | ||
0101ce28 JJ |
7721 | struct lang_and_radix |
7722 | { | |
7723 | enum language lang; | |
7724 | int radix; | |
7725 | }; | |
7726 | ||
4efc6507 DE |
7727 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7728 | ||
7729 | struct breakpoint * | |
7730 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7731 | { | |
9efa3c7f | 7732 | return create_internal_breakpoint (gdbarch, address, bp_jit_event); |
4efc6507 | 7733 | } |
0101ce28 | 7734 | |
03673fc7 PP |
7735 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7736 | ||
7737 | void | |
7738 | remove_jit_event_breakpoints (void) | |
7739 | { | |
1428b37a | 7740 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7741 | if (b->type == bp_jit_event |
7742 | && b->loc->pspace == current_program_space) | |
7743 | delete_breakpoint (b); | |
7744 | } | |
7745 | ||
cae688ec JJ |
7746 | void |
7747 | remove_solib_event_breakpoints (void) | |
7748 | { | |
1428b37a | 7749 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7750 | if (b->type == bp_shlib_event |
7751 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7752 | delete_breakpoint (b); |
7753 | } | |
7754 | ||
f37f681c PA |
7755 | /* See breakpoint.h. */ |
7756 | ||
7757 | void | |
7758 | remove_solib_event_breakpoints_at_next_stop (void) | |
7759 | { | |
1428b37a | 7760 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7761 | if (b->type == bp_shlib_event |
7762 | && b->loc->pspace == current_program_space) | |
7763 | b->disposition = disp_del_at_next_stop; | |
7764 | } | |
7765 | ||
04086b45 PA |
7766 | /* Helper for create_solib_event_breakpoint / |
7767 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7768 | INSERT_MODE to pass through to update_global_location_list. */ | |
7769 | ||
7770 | static struct breakpoint * | |
7771 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7772 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7773 | { |
7774 | struct breakpoint *b; | |
7775 | ||
9efa3c7f | 7776 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
04086b45 | 7777 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7778 | return b; |
7779 | } | |
7780 | ||
04086b45 PA |
7781 | struct breakpoint * |
7782 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7783 | { | |
7784 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7785 | } | |
7786 | ||
f37f681c PA |
7787 | /* See breakpoint.h. */ |
7788 | ||
7789 | struct breakpoint * | |
7790 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7791 | { | |
7792 | struct breakpoint *b; | |
7793 | ||
04086b45 PA |
7794 | /* Explicitly tell update_global_location_list to insert |
7795 | locations. */ | |
7796 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7797 | if (!b->loc->inserted) |
7798 | { | |
7799 | delete_breakpoint (b); | |
7800 | return NULL; | |
7801 | } | |
7802 | return b; | |
7803 | } | |
7804 | ||
cae688ec JJ |
7805 | /* Disable any breakpoints that are on code in shared libraries. Only |
7806 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7807 | ||
7808 | void | |
cb851954 | 7809 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7810 | { |
48d7020b | 7811 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7812 | { |
7813 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7814 | struct breakpoint *b = loc->owner; | |
7815 | ||
7816 | /* We apply the check to all breakpoints, including disabled for | |
7817 | those with loc->duplicate set. This is so that when breakpoint | |
7818 | becomes enabled, or the duplicate is removed, gdb will try to | |
7819 | insert all breakpoints. If we don't set shlib_disabled here, | |
7820 | we'll try to insert those breakpoints and fail. */ | |
7821 | if (((b->type == bp_breakpoint) | |
7822 | || (b->type == bp_jit_event) | |
7823 | || (b->type == bp_hardware_breakpoint) | |
7824 | || (is_tracepoint (b))) | |
7825 | && loc->pspace == current_program_space | |
7826 | && !loc->shlib_disabled | |
7827 | && solib_name_from_address (loc->pspace, loc->address) | |
7828 | ) | |
7829 | { | |
7830 | loc->shlib_disabled = 1; | |
7831 | } | |
7832 | } | |
cae688ec JJ |
7833 | } |
7834 | ||
63644780 NB |
7835 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7836 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7837 | disabled ones can just stay disabled. */ | |
84acb35a | 7838 | |
75149521 | 7839 | static void |
84acb35a JJ |
7840 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7841 | { | |
d8de7963 | 7842 | bool disabled_shlib_breaks = false; |
84acb35a | 7843 | |
48d7020b | 7844 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7845 | { |
7846 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7847 | struct breakpoint *b = loc->owner; | |
7848 | ||
7849 | if (solib->pspace == loc->pspace | |
7850 | && !loc->shlib_disabled | |
7851 | && (((b->type == bp_breakpoint | |
7852 | || b->type == bp_jit_event | |
7853 | || b->type == bp_hardware_breakpoint) | |
7854 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7855 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7856 | || is_tracepoint (b)) | |
7857 | && solib_contains_address_p (solib, loc->address)) | |
7858 | { | |
7859 | loc->shlib_disabled = 1; | |
7860 | /* At this point, we cannot rely on remove_breakpoint | |
7861 | succeeding so we must mark the breakpoint as not inserted | |
7862 | to prevent future errors occurring in remove_breakpoints. */ | |
7863 | loc->inserted = 0; | |
7864 | ||
7865 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7866 | gdb::observers::breakpoint_modified.notify (b); | |
7867 | ||
7868 | if (!disabled_shlib_breaks) | |
7869 | { | |
7870 | target_terminal::ours_for_output (); | |
7871 | warning (_("Temporarily disabling breakpoints " | |
7872 | "for unloaded shared library \"%s\""), | |
7873 | solib->so_name); | |
7874 | } | |
d8de7963 | 7875 | disabled_shlib_breaks = true; |
01add95b SM |
7876 | } |
7877 | } | |
84acb35a JJ |
7878 | } |
7879 | ||
63644780 NB |
7880 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7881 | notification of free_objfile. Only apply to enabled breakpoints, | |
7882 | disabled ones can just stay disabled. */ | |
7883 | ||
7884 | static void | |
7885 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7886 | { | |
63644780 NB |
7887 | if (objfile == NULL) |
7888 | return; | |
7889 | ||
d03de421 PA |
7890 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7891 | managed by the user with add-symbol-file/remove-symbol-file. | |
7892 | Similarly to how breakpoints in shared libraries are handled in | |
7893 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7894 | shlib_disabled so they end up uninserted on the next global |
7895 | location list update. Shared libraries not loaded by the user | |
7896 | aren't handled here -- they're already handled in | |
7897 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7898 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7899 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7900 | main objfile). */ | |
7901 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7902 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7903 | return; |
7904 | ||
43892fdf | 7905 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7906 | { |
d8de7963 | 7907 | bool bp_modified = false; |
63644780 NB |
7908 | |
7909 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7910 | continue; | |
7911 | ||
40cb8ca5 | 7912 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7913 | { |
7914 | CORE_ADDR loc_addr = loc->address; | |
7915 | ||
7916 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7917 | && loc->loc_type != bp_loc_software_breakpoint) | |
7918 | continue; | |
7919 | ||
7920 | if (loc->shlib_disabled != 0) | |
7921 | continue; | |
7922 | ||
7923 | if (objfile->pspace != loc->pspace) | |
7924 | continue; | |
7925 | ||
7926 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7927 | && loc->loc_type != bp_loc_software_breakpoint) | |
7928 | continue; | |
7929 | ||
7930 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7931 | { | |
7932 | loc->shlib_disabled = 1; | |
08351840 PA |
7933 | /* At this point, we don't know whether the object was |
7934 | unmapped from the inferior or not, so leave the | |
7935 | inserted flag alone. We'll handle failure to | |
7936 | uninsert quietly, in case the object was indeed | |
7937 | unmapped. */ | |
63644780 NB |
7938 | |
7939 | mark_breakpoint_location_modified (loc); | |
7940 | ||
d8de7963 | 7941 | bp_modified = true; |
63644780 NB |
7942 | } |
7943 | } | |
7944 | ||
7945 | if (bp_modified) | |
76727919 | 7946 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7947 | } |
7948 | } | |
7949 | ||
b650a282 | 7950 | /* See breakpoint.h. */ |
ce78b96d | 7951 | |
92bb0228 PA |
7952 | breakpoint::breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
7953 | bool temp, const char *cond_string_) | |
7954 | : type (bptype), | |
7955 | disposition (temp ? disp_del : disp_donttouch), | |
7956 | gdbarch (gdbarch_), | |
7957 | language (current_language->la_language), | |
7958 | input_radix (::input_radix), | |
7959 | cond_string (cond_string_ != nullptr | |
7960 | ? make_unique_xstrdup (cond_string_) | |
7961 | : nullptr), | |
7962 | related_breakpoint (this) | |
7963 | { | |
7964 | } | |
7965 | ||
7966 | /* See breakpoint.h. */ | |
7967 | ||
fed1c982 | 7968 | catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, |
92bb0228 PA |
7969 | const char *cond_string) |
7970 | : breakpoint (gdbarch, bp_catchpoint, temp, cond_string) | |
c906108c | 7971 | { |
acd0955b | 7972 | add_dummy_location (this, current_program_space); |
c5aa993b | 7973 | |
acd0955b | 7974 | pspace = current_program_space; |
346774a9 PA |
7975 | } |
7976 | ||
b82d4ec9 | 7977 | breakpoint * |
b270e6f9 | 7978 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 7979 | { |
b270e6f9 | 7980 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 7981 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
7982 | if (is_tracepoint (b)) |
7983 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
7984 | if (!internal) |
7985 | mention (b); | |
76727919 | 7986 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
7987 | |
7988 | if (update_gll) | |
44702360 | 7989 | update_global_location_list (UGLL_MAY_INSERT); |
b82d4ec9 PA |
7990 | |
7991 | return b; | |
c56053d2 PA |
7992 | } |
7993 | ||
c906108c | 7994 | static int |
fba45db2 | 7995 | hw_breakpoint_used_count (void) |
c906108c | 7996 | { |
c906108c SS |
7997 | int i = 0; |
7998 | ||
43892fdf | 7999 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 8000 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 8001 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
8002 | { |
8003 | /* Special types of hardware breakpoints may use more than | |
8004 | one register. */ | |
c47614fe | 8005 | i += b->resources_needed (bl); |
f1310107 | 8006 | } |
c906108c SS |
8007 | |
8008 | return i; | |
8009 | } | |
8010 | ||
a1398e0c PA |
8011 | /* Returns the resources B would use if it were a hardware |
8012 | watchpoint. */ | |
8013 | ||
c906108c | 8014 | static int |
a1398e0c | 8015 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8016 | { |
c906108c SS |
8017 | int i = 0; |
8018 | ||
a1398e0c PA |
8019 | if (!breakpoint_enabled (b)) |
8020 | return 0; | |
8021 | ||
40cb8ca5 | 8022 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
8023 | { |
8024 | /* Special types of hardware watchpoints may use more than | |
8025 | one register. */ | |
c47614fe | 8026 | i += b->resources_needed (bl); |
a1398e0c PA |
8027 | } |
8028 | ||
8029 | return i; | |
8030 | } | |
8031 | ||
8032 | /* Returns the sum the used resources of all hardware watchpoints of | |
8033 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8034 | the sum of the used resources of all hardware watchpoints of other | |
8035 | types _not_ TYPE. */ | |
8036 | ||
8037 | static int | |
8038 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8039 | enum bptype type, int *other_type_used) | |
8040 | { | |
8041 | int i = 0; | |
a1398e0c | 8042 | |
c906108c | 8043 | *other_type_used = 0; |
43892fdf | 8044 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 8045 | { |
a1398e0c PA |
8046 | if (b == except) |
8047 | continue; | |
e09342b5 TJB |
8048 | if (!breakpoint_enabled (b)) |
8049 | continue; | |
8050 | ||
a1398e0c PA |
8051 | if (b->type == type) |
8052 | i += hw_watchpoint_use_count (b); | |
8053 | else if (is_hardware_watchpoint (b)) | |
8054 | *other_type_used = 1; | |
e09342b5 TJB |
8055 | } |
8056 | ||
c906108c SS |
8057 | return i; |
8058 | } | |
8059 | ||
c906108c | 8060 | void |
fba45db2 | 8061 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8062 | { |
43892fdf | 8063 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8064 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8065 | { |
b5de0fa7 | 8066 | b->enable_state = bp_call_disabled; |
44702360 | 8067 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 8068 | } |
c906108c SS |
8069 | } |
8070 | ||
8071 | void | |
fba45db2 | 8072 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8073 | { |
43892fdf | 8074 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8075 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8076 | { |
b5de0fa7 | 8077 | b->enable_state = bp_enabled; |
44702360 | 8078 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 8079 | } |
c906108c SS |
8080 | } |
8081 | ||
8bea4e01 UW |
8082 | void |
8083 | disable_breakpoints_before_startup (void) | |
8084 | { | |
6c95b8df | 8085 | current_program_space->executing_startup = 1; |
44702360 | 8086 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8087 | } |
8088 | ||
8089 | void | |
8090 | enable_breakpoints_after_startup (void) | |
8091 | { | |
6c95b8df | 8092 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8093 | breakpoint_re_set (); |
8bea4e01 UW |
8094 | } |
8095 | ||
7a3e3265 PA |
8096 | /* Allocate a new momentary breakpoint. */ |
8097 | ||
7ab97995 | 8098 | template<typename... Arg> |
7a3e3265 | 8099 | static momentary_breakpoint * |
7ab97995 PA |
8100 | new_momentary_breakpoint (struct gdbarch *gdbarch, enum bptype type, |
8101 | Arg&&... args) | |
7a3e3265 PA |
8102 | { |
8103 | if (type == bp_longjmp || type == bp_exception) | |
7ab97995 PA |
8104 | return new longjmp_breakpoint (gdbarch, type, |
8105 | std::forward<Arg> (args)...); | |
7a3e3265 | 8106 | else |
7ab97995 PA |
8107 | return new momentary_breakpoint (gdbarch, type, |
8108 | std::forward<Arg> (args)...); | |
7a3e3265 PA |
8109 | } |
8110 | ||
7c16b83e PA |
8111 | /* Set a momentary breakpoint of type TYPE at address specified by |
8112 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8113 | frame. */ | |
c906108c | 8114 | |
454dafbd | 8115 | breakpoint_up |
a6d9a66e UW |
8116 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8117 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8118 | { |
193facb3 JK |
8119 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8120 | tail-called one. */ | |
8121 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8122 | |
7a3e3265 | 8123 | std::unique_ptr<momentary_breakpoint> b |
7ab97995 PA |
8124 | (new_momentary_breakpoint (gdbarch, type, sal.pspace, frame_id, |
8125 | inferior_thread ()->global_num)); | |
7a3e3265 PA |
8126 | |
8127 | b->add_location (sal); | |
c906108c | 8128 | |
7a3e3265 PA |
8129 | breakpoint_up bp (add_to_breakpoint_chain (std::move (b))); |
8130 | ||
44702360 | 8131 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8132 | |
7a3e3265 | 8133 | return bp; |
c906108c | 8134 | } |
611c83ae | 8135 | |
06edf0c0 | 8136 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8137 | The new breakpoint will have type TYPE, use OPS as its |
8138 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8139 | |
06edf0c0 PA |
8140 | static struct breakpoint * |
8141 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8142 | enum bptype type, | |
7ab97995 PA |
8143 | int loc_enabled, |
8144 | int thread) | |
e58b0e63 | 8145 | { |
7a3e3265 | 8146 | std::unique_ptr<breakpoint> copy |
7ab97995 PA |
8147 | (new_momentary_breakpoint (orig->gdbarch, type, orig->pspace, |
8148 | orig->frame_id, thread)); | |
ee89d0a4 | 8149 | copy->loc = copy->allocate_location (); |
0ba852ab | 8150 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8151 | |
a6d9a66e | 8152 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8153 | copy->loc->requested_address = orig->loc->requested_address; |
8154 | copy->loc->address = orig->loc->address; | |
8155 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8156 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8157 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8158 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8159 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8160 | copy->loc->enabled = loc_enabled; |
e58b0e63 | 8161 | |
7a3e3265 | 8162 | breakpoint *b = add_to_breakpoint_chain (std::move (copy)); |
44702360 | 8163 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
7a3e3265 | 8164 | return b; |
e58b0e63 PA |
8165 | } |
8166 | ||
06edf0c0 PA |
8167 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8168 | ORIG is NULL. */ | |
8169 | ||
8170 | struct breakpoint * | |
8171 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8172 | { | |
8173 | /* If there's nothing to clone, then return nothing. */ | |
8174 | if (orig == NULL) | |
8175 | return NULL; | |
8176 | ||
7ab97995 PA |
8177 | return momentary_breakpoint_from_master (orig, orig->type, 0, |
8178 | orig->thread); | |
06edf0c0 PA |
8179 | } |
8180 | ||
454dafbd | 8181 | breakpoint_up |
a6d9a66e UW |
8182 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8183 | enum bptype type) | |
611c83ae PA |
8184 | { |
8185 | struct symtab_and_line sal; | |
8186 | ||
8187 | sal = find_pc_line (pc, 0); | |
8188 | sal.pc = pc; | |
8189 | sal.section = find_pc_overlay (pc); | |
8190 | sal.explicit_pc = 1; | |
8191 | ||
a6d9a66e | 8192 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8193 | } |
c906108c | 8194 | \f |
c5aa993b | 8195 | |
c906108c SS |
8196 | /* Tell the user we have just set a breakpoint B. */ |
8197 | ||
8198 | static void | |
b713485d | 8199 | mention (const breakpoint *b) |
c906108c | 8200 | { |
c47614fe | 8201 | b->print_mention (); |
2d33446d | 8202 | current_uiout->text ("\n"); |
c906108c | 8203 | } |
c906108c | 8204 | \f |
c5aa993b | 8205 | |
5133a315 | 8206 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8207 | |
7f32a4d5 PA |
8208 | /* Handle "set breakpoint auto-hw on". |
8209 | ||
8210 | If the explicitly specified breakpoint type is not hardware | |
8211 | breakpoint, check the memory map to see whether the breakpoint | |
8212 | address is in read-only memory. | |
8213 | ||
8214 | - location type is not hardware breakpoint, memory is read-only. | |
8215 | We change the type of the location to hardware breakpoint. | |
8216 | ||
8217 | - location type is hardware breakpoint, memory is read-write. This | |
8218 | means we've previously made the location hardware one, but then the | |
8219 | memory map changed, so we undo. | |
8220 | */ | |
8221 | ||
8222 | static void | |
8223 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8224 | { | |
8225 | if (automatic_hardware_breakpoints | |
8226 | && bl->owner->type != bp_hardware_breakpoint | |
8227 | && (bl->loc_type == bp_loc_software_breakpoint | |
8228 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8229 | { | |
8230 | /* When breakpoints are removed, remove_breakpoints will use | |
8231 | location types we've just set here, the only possible problem | |
8232 | is that memory map has changed during running program, but | |
8233 | it's not going to work anyway with current gdb. */ | |
8234 | mem_region *mr = lookup_mem_region (bl->address); | |
8235 | ||
8236 | if (mr != nullptr) | |
8237 | { | |
8238 | enum bp_loc_type new_type; | |
8239 | ||
8240 | if (mr->attrib.mode != MEM_RW) | |
8241 | new_type = bp_loc_hardware_breakpoint; | |
8242 | else | |
8243 | new_type = bp_loc_software_breakpoint; | |
8244 | ||
8245 | if (new_type != bl->loc_type) | |
8246 | { | |
8247 | static bool said = false; | |
8248 | ||
8249 | bl->loc_type = new_type; | |
8250 | if (!said) | |
8251 | { | |
6cb06a8c TT |
8252 | gdb_printf (_("Note: automatically using " |
8253 | "hardware breakpoints for " | |
8254 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8255 | said = true; |
8256 | } | |
8257 | } | |
8258 | } | |
8259 | } | |
8260 | } | |
8261 | ||
06615628 | 8262 | bp_location * |
74421c0b | 8263 | code_breakpoint::add_location (const symtab_and_line &sal) |
0d381245 | 8264 | { |
06615628 | 8265 | struct bp_location *new_loc, **tmp; |
3742cc8b | 8266 | CORE_ADDR adjusted_address; |
06615628 | 8267 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
3742cc8b YQ |
8268 | |
8269 | if (loc_gdbarch == NULL) | |
06615628 | 8270 | loc_gdbarch = gdbarch; |
3742cc8b YQ |
8271 | |
8272 | /* Adjust the breakpoint's address prior to allocating a location. | |
ee89d0a4 | 8273 | Once we call allocate_location(), that mostly uninitialized |
3742cc8b YQ |
8274 | location will be placed on the location chain. Adjustment of the |
8275 | breakpoint may cause target_read_memory() to be called and we do | |
8276 | not want its scan of the location chain to find a breakpoint and | |
8277 | location that's only been partially initialized. */ | |
8278 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
60270718 AB |
8279 | sal.pc, type, |
8280 | sal.pspace); | |
0d381245 | 8281 | |
d30113d4 | 8282 | /* Sort the locations by their ADDRESS. */ |
06615628 PA |
8283 | new_loc = allocate_location (); |
8284 | for (tmp = &(loc); *tmp != NULL && (*tmp)->address <= adjusted_address; | |
d30113d4 | 8285 | tmp = &((*tmp)->next)) |
0d381245 | 8286 | ; |
06615628 PA |
8287 | new_loc->next = *tmp; |
8288 | *tmp = new_loc; | |
8289 | ||
8290 | new_loc->requested_address = sal.pc; | |
8291 | new_loc->address = adjusted_address; | |
8292 | new_loc->pspace = sal.pspace; | |
8293 | new_loc->probe.prob = sal.prob; | |
8294 | new_loc->probe.objfile = sal.objfile; | |
8295 | gdb_assert (new_loc->pspace != NULL); | |
8296 | new_loc->section = sal.section; | |
8297 | new_loc->gdbarch = loc_gdbarch; | |
8298 | new_loc->line_number = sal.line; | |
8299 | new_loc->symtab = sal.symtab; | |
8300 | new_loc->symbol = sal.symbol; | |
8301 | new_loc->msymbol = sal.msymbol; | |
8302 | new_loc->objfile = sal.objfile; | |
8303 | ||
8304 | set_breakpoint_location_function (new_loc); | |
1a853c52 | 8305 | |
6ae88661 LM |
8306 | /* While by definition, permanent breakpoints are already present in the |
8307 | code, we don't mark the location as inserted. Normally one would expect | |
8308 | that GDB could rely on that breakpoint instruction to stop the program, | |
8309 | thus removing the need to insert its own breakpoint, except that executing | |
8310 | the breakpoint instruction can kill the target instead of reporting a | |
8311 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8312 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8313 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8314 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8315 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8316 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8317 | it manually increments the PC, thus avoiding executing the breakpoint | |
8318 | instruction.) */ | |
06615628 PA |
8319 | if (bp_loc_is_permanent (new_loc)) |
8320 | new_loc->permanent = 1; | |
1a853c52 | 8321 | |
06615628 | 8322 | return new_loc; |
0d381245 | 8323 | } |
514f746b AR |
8324 | \f |
8325 | ||
5133a315 LM |
8326 | /* Return true if LOC is pointing to a permanent breakpoint, |
8327 | return false otherwise. */ | |
1cf4d951 | 8328 | |
5133a315 | 8329 | static bool |
1cf4d951 PA |
8330 | bp_loc_is_permanent (struct bp_location *loc) |
8331 | { | |
514f746b AR |
8332 | gdb_assert (loc != NULL); |
8333 | ||
cb1e4e32 PA |
8334 | /* If we have a non-breakpoint-backed catchpoint or a software |
8335 | watchpoint, just return 0. We should not attempt to read from | |
8336 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8337 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8338 | memory. */ |
cb1e4e32 | 8339 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8340 | return false; |
244558af | 8341 | |
5ed8105e | 8342 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8343 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8344 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8345 | } |
8346 | ||
e7e0cddf SS |
8347 | /* Build a command list for the dprintf corresponding to the current |
8348 | settings of the dprintf style options. */ | |
8349 | ||
8350 | static void | |
8351 | update_dprintf_command_list (struct breakpoint *b) | |
8352 | { | |
6f781ee3 | 8353 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8354 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8355 | |
8356 | if (!dprintf_args) | |
8357 | return; | |
8358 | ||
8359 | dprintf_args = skip_spaces (dprintf_args); | |
8360 | ||
8361 | /* Allow a comma, as it may have terminated a location, but don't | |
8362 | insist on it. */ | |
8363 | if (*dprintf_args == ',') | |
8364 | ++dprintf_args; | |
8365 | dprintf_args = skip_spaces (dprintf_args); | |
8366 | ||
8367 | if (*dprintf_args != '"') | |
8368 | error (_("Bad format string, missing '\"'.")); | |
8369 | ||
d3ce09f5 | 8370 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8371 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8372 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8373 | { |
e0700ba4 | 8374 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8375 | error (_("No function supplied for dprintf call")); |
8376 | ||
e0700ba4 | 8377 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8378 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8379 | dprintf_function.c_str (), |
8380 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8381 | dprintf_args); |
8382 | else | |
8383 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8384 | dprintf_function.c_str (), |
e7e0cddf SS |
8385 | dprintf_args); |
8386 | } | |
d3ce09f5 SS |
8387 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8388 | { | |
8389 | if (target_can_run_breakpoint_commands ()) | |
8390 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8391 | else | |
8392 | { | |
8393 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8394 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8395 | } | |
8396 | } | |
e7e0cddf | 8397 | else |
f34652de | 8398 | internal_error (_("Invalid dprintf style.")); |
e7e0cddf | 8399 | |
f28045c2 | 8400 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8401 | |
12973681 TT |
8402 | /* Manufacture a printf sequence. */ |
8403 | struct command_line *printf_cmd_line | |
8579fd13 | 8404 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8405 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8406 | command_lines_deleter ())); | |
e7e0cddf SS |
8407 | } |
8408 | ||
8409 | /* Update all dprintf commands, making their command lists reflect | |
8410 | current style settings. */ | |
8411 | ||
8412 | static void | |
eb4c3f4a | 8413 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8414 | struct cmd_list_element *c) |
8415 | { | |
43892fdf SM |
8416 | for (breakpoint *b : all_breakpoints ()) |
8417 | if (b->type == bp_dprintf) | |
e7e0cddf | 8418 | update_dprintf_command_list (b); |
e7e0cddf | 8419 | } |
c3f6f71d | 8420 | |
74421c0b | 8421 | code_breakpoint::code_breakpoint (struct gdbarch *gdbarch_, |
3b003a61 PA |
8422 | enum bptype type_, |
8423 | gdb::array_view<const symtab_and_line> sals, | |
264f9890 | 8424 | location_spec_up &&locspec_, |
3b003a61 PA |
8425 | gdb::unique_xmalloc_ptr<char> filter_, |
8426 | gdb::unique_xmalloc_ptr<char> cond_string_, | |
8427 | gdb::unique_xmalloc_ptr<char> extra_string_, | |
8428 | enum bpdisp disposition_, | |
8429 | int thread_, int task_, int ignore_count_, | |
8430 | int from_tty, | |
8431 | int enabled_, unsigned flags, | |
8432 | int display_canonical_) | |
8433 | : breakpoint (gdbarch_, type_) | |
018d34a4 | 8434 | { |
0d381245 | 8435 | int i; |
018d34a4 VP |
8436 | |
8437 | if (type == bp_hardware_breakpoint) | |
8438 | { | |
fbbd034e AS |
8439 | int target_resources_ok; |
8440 | ||
8441 | i = hw_breakpoint_used_count (); | |
8442 | target_resources_ok = | |
8443 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8444 | i + 1, 0); |
8445 | if (target_resources_ok == 0) | |
8446 | error (_("No hardware breakpoint support in the target.")); | |
8447 | else if (target_resources_ok < 0) | |
8448 | error (_("Hardware breakpoints used exceeds limit.")); | |
8449 | } | |
8450 | ||
6c5b2ebe | 8451 | gdb_assert (!sals.empty ()); |
6c95b8df | 8452 | |
0a9ccb9d | 8453 | /* At most one of thread or task can be set on any breakpoint. */ |
2ecee236 | 8454 | gdb_assert (thread == -1 || task == -1); |
3b003a61 PA |
8455 | thread = thread_; |
8456 | task = task_; | |
0d381245 | 8457 | |
3b003a61 PA |
8458 | cond_string = std::move (cond_string_); |
8459 | extra_string = std::move (extra_string_); | |
8460 | ignore_count = ignore_count_; | |
8461 | enable_state = enabled_ ? bp_enabled : bp_disabled; | |
8462 | disposition = disposition_; | |
5af949e3 | 8463 | |
3b003a61 PA |
8464 | if (type == bp_static_tracepoint |
8465 | || type == bp_static_marker_tracepoint) | |
8466 | { | |
98ed24fb | 8467 | auto *t = gdb::checked_static_cast<struct tracepoint *> (this); |
3b003a61 | 8468 | struct static_tracepoint_marker marker; |
0d381245 | 8469 | |
3b003a61 | 8470 | if (strace_marker_p (this)) |
0d381245 | 8471 | { |
3b003a61 PA |
8472 | /* We already know the marker exists, otherwise, we wouldn't |
8473 | see a sal for it. */ | |
709438c7 | 8474 | const char *p = &locspec_->to_string ()[3]; |
3b003a61 | 8475 | const char *endp; |
0fb4aa4b | 8476 | |
3b003a61 | 8477 | p = skip_spaces (p); |
0fb4aa4b | 8478 | |
3b003a61 | 8479 | endp = skip_to_space (p); |
0fb4aa4b | 8480 | |
3b003a61 | 8481 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8482 | |
3b003a61 PA |
8483 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8484 | t->static_trace_marker_id.c_str ()); | |
8485 | } | |
8486 | else if (target_static_tracepoint_marker_at (sals[0].pc, &marker)) | |
8487 | { | |
8488 | t->static_trace_marker_id = std::move (marker.str_id); | |
0fb4aa4b | 8489 | |
3b003a61 PA |
8490 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8491 | t->static_trace_marker_id.c_str ()); | |
0d381245 VP |
8492 | } |
8493 | else | |
3b003a61 PA |
8494 | warning (_("Couldn't determine the static tracepoint marker to probe")); |
8495 | } | |
8496 | ||
8497 | for (const auto &sal : sals) | |
8498 | { | |
8499 | if (from_tty) | |
018d34a4 | 8500 | { |
3b003a61 PA |
8501 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8502 | if (loc_gdbarch == nullptr) | |
8503 | loc_gdbarch = gdbarch; | |
8504 | ||
8505 | describe_other_breakpoints (loc_gdbarch, | |
8506 | sal.pspace, sal.pc, sal.section, thread); | |
0d381245 VP |
8507 | } |
8508 | ||
3b003a61 PA |
8509 | bp_location *new_loc = add_location (sal); |
8510 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) | |
8511 | new_loc->inserted = 1; | |
8512 | ||
b5fa468f TBA |
8513 | /* Do not set breakpoint locations conditions yet. As locations |
8514 | are inserted, they get sorted based on their addresses. Let | |
8515 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8516 | |
8517 | /* Dynamic printf requires and uses additional arguments on the | |
8518 | command line, otherwise it's an error. */ | |
8519 | if (type == bp_dprintf) | |
8520 | { | |
3b003a61 PA |
8521 | if (extra_string != nullptr) |
8522 | update_dprintf_command_list (this); | |
e7e0cddf SS |
8523 | else |
8524 | error (_("Format string required")); | |
8525 | } | |
3b003a61 PA |
8526 | else if (extra_string != nullptr) |
8527 | error (_("Garbage '%s' at end of command"), extra_string.get ()); | |
855a6e68 | 8528 | } |
018d34a4 | 8529 | |
b5fa468f TBA |
8530 | /* The order of the locations is now stable. Set the location |
8531 | condition using the location's number. */ | |
8532 | int loc_num = 1; | |
3b003a61 | 8533 | for (bp_location *bl : locations ()) |
b5fa468f | 8534 | { |
3b003a61 PA |
8535 | if (cond_string != nullptr) |
8536 | set_breakpoint_location_condition (cond_string.get (), bl, | |
8537 | number, loc_num); | |
b5fa468f TBA |
8538 | |
8539 | ++loc_num; | |
8540 | } | |
8541 | ||
3b003a61 | 8542 | display_canonical = display_canonical_; |
264f9890 PA |
8543 | if (locspec_ != nullptr) |
8544 | locspec = std::move (locspec_); | |
018d34a4 | 8545 | else |
264f9890 | 8546 | locspec = new_address_location_spec (this->loc->address, NULL, 0); |
3b003a61 | 8547 | filter = std::move (filter_); |
d9b3f62e | 8548 | } |
018d34a4 | 8549 | |
d9b3f62e PA |
8550 | static void |
8551 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8552 | gdb::array_view<const symtab_and_line> sals, |
264f9890 | 8553 | location_spec_up &&locspec, |
e1e01040 PA |
8554 | gdb::unique_xmalloc_ptr<char> filter, |
8555 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8556 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8557 | enum bptype type, enum bpdisp disposition, |
8558 | int thread, int task, int ignore_count, | |
ef4848c7 | 8559 | int from_tty, |
44f238bb PA |
8560 | int enabled, int internal, unsigned flags, |
8561 | int display_canonical) | |
d9b3f62e | 8562 | { |
74421c0b | 8563 | std::unique_ptr<code_breakpoint> b |
3b003a61 PA |
8564 | = new_breakpoint_from_type (gdbarch, |
8565 | type, | |
8566 | sals, | |
264f9890 | 8567 | std::move (locspec), |
3b003a61 PA |
8568 | std::move (filter), |
8569 | std::move (cond_string), | |
8570 | std::move (extra_string), | |
8571 | disposition, | |
8572 | thread, task, ignore_count, | |
8573 | from_tty, | |
8574 | enabled, flags, | |
8575 | display_canonical); | |
d9b3f62e | 8576 | |
b270e6f9 | 8577 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8578 | } |
8579 | ||
8580 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8581 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8582 | value. COND_STRING, if not NULL, specified the condition to be | |
8583 | used for all breakpoints. Essentially the only case where | |
8584 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8585 | function. In that case, it's still not possible to specify | |
8586 | separate conditions for different overloaded functions, so | |
8587 | we take just a single condition string. | |
8588 | ||
c3f6f71d | 8589 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8590 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8591 | array contents). If the function fails (error() is called), the |
8592 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8593 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8594 | |
8595 | static void | |
8cdf0e15 | 8596 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8597 | struct linespec_result *canonical, |
e1e01040 PA |
8598 | gdb::unique_xmalloc_ptr<char> cond_string, |
8599 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8600 | enum bptype type, enum bpdisp disposition, |
8601 | int thread, int task, int ignore_count, | |
ef4848c7 | 8602 | int from_tty, |
44f238bb | 8603 | int enabled, int internal, unsigned flags) |
c906108c | 8604 | { |
f8eba3c6 | 8605 | if (canonical->pre_expanded) |
6c5b2ebe | 8606 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8607 | |
6c5b2ebe | 8608 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8609 | { |
f00aae0f | 8610 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8611 | 'break', without arguments. */ |
264f9890 | 8612 | location_spec_up locspec |
5c1ddcb6 PA |
8613 | = (canonical->locspec != nullptr |
8614 | ? canonical->locspec->clone () | |
8615 | : nullptr); | |
e1e01040 | 8616 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8617 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8618 | |
6c5b2ebe | 8619 | create_breakpoint_sal (gdbarch, lsal.sals, |
264f9890 | 8620 | std::move (locspec), |
e1e01040 PA |
8621 | std::move (filter_string), |
8622 | std::move (cond_string), | |
8623 | std::move (extra_string), | |
e7e0cddf | 8624 | type, disposition, |
ef4848c7 | 8625 | thread, task, ignore_count, |
44f238bb | 8626 | from_tty, enabled, internal, flags, |
56435ebe | 8627 | canonical->special_display); |
c3f6f71d | 8628 | } |
c3f6f71d | 8629 | } |
c906108c | 8630 | |
264f9890 | 8631 | /* Parse LOCSPEC which is assumed to be a SAL specification possibly |
c3f6f71d | 8632 | followed by conditionals. On return, SALS contains an array of SAL |
264f9890 PA |
8633 | addresses found. LOCSPEC points to the end of the SAL (for |
8634 | linespec locspecs). | |
9998af43 TJB |
8635 | |
8636 | The array and the line spec strings are allocated on the heap, it is | |
8637 | the caller's responsibility to free them. */ | |
c906108c | 8638 | |
b9362cc7 | 8639 | static void |
264f9890 | 8640 | parse_breakpoint_sals (location_spec *locspec, |
58438ac1 | 8641 | struct linespec_result *canonical) |
c3f6f71d | 8642 | { |
f00aae0f KS |
8643 | struct symtab_and_line cursal; |
8644 | ||
7464aeaa | 8645 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
f00aae0f | 8646 | { |
40d97ee2 | 8647 | const char *spec = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 8648 | |
a20714ff | 8649 | if (spec == NULL) |
f00aae0f KS |
8650 | { |
8651 | /* The last displayed codepoint, if it's valid, is our default | |
8652 | breakpoint address. */ | |
8653 | if (last_displayed_sal_is_valid ()) | |
8654 | { | |
f00aae0f KS |
8655 | /* Set sal's pspace, pc, symtab, and line to the values |
8656 | corresponding to the last call to print_frame_info. | |
8657 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8658 | as the breakpoint line number is inappropriate otherwise. | |
8659 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8660 | symtab_and_line sal = get_last_displayed_sal (); |
8661 | CORE_ADDR pc = sal.pc; | |
8662 | ||
f00aae0f KS |
8663 | sal = find_pc_line (pc, 0); |
8664 | ||
8665 | /* "break" without arguments is equivalent to "break *PC" | |
8666 | where PC is the last displayed codepoint's address. So | |
8667 | make sure to set sal.explicit_pc to prevent GDB from | |
8668 | trying to expand the list of sals to include all other | |
8669 | instances with the same symtab and line. */ | |
8670 | sal.pc = pc; | |
8671 | sal.explicit_pc = 1; | |
8672 | ||
6c5b2ebe PA |
8673 | struct linespec_sals lsal; |
8674 | lsal.sals = {sal}; | |
f00aae0f KS |
8675 | lsal.canonical = NULL; |
8676 | ||
6c5b2ebe | 8677 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8678 | return; |
8679 | } | |
8680 | else | |
8681 | error (_("No default breakpoint address now.")); | |
c906108c | 8682 | } |
c906108c | 8683 | } |
f00aae0f KS |
8684 | |
8685 | /* Force almost all breakpoints to be in terms of the | |
8686 | current_source_symtab (which is decode_line_1's default). | |
8687 | This should produce the results we want almost all of the | |
8688 | time while leaving default_breakpoint_* alone. | |
8689 | ||
8690 | ObjC: However, don't match an Objective-C method name which | |
8691 | may have a '+' or '-' succeeded by a '['. */ | |
8692 | cursal = get_current_source_symtab_and_line (); | |
8693 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8694 | { |
a20714ff | 8695 | const char *spec = NULL; |
cc80f267 | 8696 | |
7464aeaa | 8697 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
40d97ee2 | 8698 | spec = as_linespec_location_spec (locspec)->spec_string; |
cc80f267 | 8699 | |
f00aae0f | 8700 | if (!cursal.symtab |
a20714ff PA |
8701 | || (spec != NULL |
8702 | && strchr ("+-", spec[0]) != NULL | |
8703 | && spec[1] != '[')) | |
f00aae0f | 8704 | { |
264f9890 | 8705 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8706 | get_last_displayed_symtab (), |
8707 | get_last_displayed_line (), | |
8708 | canonical, NULL, NULL); | |
8709 | return; | |
8710 | } | |
c906108c | 8711 | } |
f00aae0f | 8712 | |
264f9890 | 8713 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8714 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8715 | } |
c906108c | 8716 | |
c906108c | 8717 | |
c3f6f71d | 8718 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8719 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8720 | |
b9362cc7 | 8721 | static void |
6c5b2ebe | 8722 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8723 | { |
6c5b2ebe PA |
8724 | for (auto &sal : sals) |
8725 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8726 | } |
8727 | ||
7a697b8d SS |
8728 | /* Fast tracepoints may have restrictions on valid locations. For |
8729 | instance, a fast tracepoint using a jump instead of a trap will | |
8730 | likely have to overwrite more bytes than a trap would, and so can | |
8731 | only be placed where the instruction is longer than the jump, or a | |
8732 | multi-instruction sequence does not have a jump into the middle of | |
8733 | it, etc. */ | |
8734 | ||
8735 | static void | |
8736 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8737 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8738 | { |
6c5b2ebe | 8739 | for (const auto &sal : sals) |
7a697b8d | 8740 | { |
f8eba3c6 TT |
8741 | struct gdbarch *sarch; |
8742 | ||
6c5b2ebe | 8743 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8744 | /* We fall back to GDBARCH if there is no architecture |
8745 | associated with SAL. */ | |
8746 | if (sarch == NULL) | |
8747 | sarch = gdbarch; | |
281d762b TT |
8748 | std::string msg; |
8749 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8750 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8751 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8752 | } |
8753 | } | |
8754 | ||
018d34a4 VP |
8755 | /* Given TOK, a string specification of condition and thread, as |
8756 | accepted by the 'break' command, extract the condition | |
8757 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8758 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8759 | If no condition is found, *COND_STRING is set to NULL. |
8760 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8761 | |
8762 | static void | |
bbc13ae3 | 8763 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8764 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8765 | int *thread, int *task, | |
8766 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8767 | { |
6f781ee3 | 8768 | cond_string->reset (); |
018d34a4 | 8769 | *thread = -1; |
2ecee236 | 8770 | *task = -1; |
6f781ee3 | 8771 | rest->reset (); |
733d554a | 8772 | bool force = false; |
ed1d1739 | 8773 | |
018d34a4 VP |
8774 | while (tok && *tok) |
8775 | { | |
bbc13ae3 | 8776 | const char *end_tok; |
018d34a4 | 8777 | int toklen; |
bbc13ae3 KS |
8778 | const char *cond_start = NULL; |
8779 | const char *cond_end = NULL; | |
cc59ec59 | 8780 | |
f1735a53 | 8781 | tok = skip_spaces (tok); |
e7e0cddf SS |
8782 | |
8783 | if ((*tok == '"' || *tok == ',') && rest) | |
8784 | { | |
6f781ee3 | 8785 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8786 | return; |
8787 | } | |
8788 | ||
f1735a53 | 8789 | end_tok = skip_to_space (tok); |
d634f2de | 8790 | |
018d34a4 | 8791 | toklen = end_tok - tok; |
d634f2de | 8792 | |
018d34a4 VP |
8793 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8794 | { | |
8795 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8796 | try |
8797 | { | |
8798 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8799 | } | |
8800 | catch (const gdb_exception_error &) | |
8801 | { | |
8802 | if (!force) | |
8803 | throw; | |
8804 | else | |
8805 | tok = tok + strlen (tok); | |
8806 | } | |
018d34a4 | 8807 | cond_end = tok; |
6f781ee3 | 8808 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8809 | } |
733d554a TBA |
8810 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8811 | { | |
5759831a | 8812 | tok = tok + toklen; |
733d554a TBA |
8813 | force = true; |
8814 | } | |
018d34a4 VP |
8815 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8816 | { | |
5d5658a1 PA |
8817 | const char *tmptok; |
8818 | struct thread_info *thr; | |
d634f2de | 8819 | |
980dbf36 AB |
8820 | if (*thread != -1) |
8821 | error(_("You can specify only one thread.")); | |
8822 | ||
2ecee236 | 8823 | if (*task != -1) |
0a9ccb9d AB |
8824 | error (_("You can specify only one of thread or task.")); |
8825 | ||
018d34a4 | 8826 | tok = end_tok + 1; |
5d5658a1 | 8827 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8828 | if (tok == tmptok) |
8829 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8830 | *thread = thr->global_num; |
bbc13ae3 | 8831 | tok = tmptok; |
018d34a4 | 8832 | } |
4a306c9a JB |
8833 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8834 | { | |
8835 | char *tmptok; | |
8836 | ||
2ecee236 | 8837 | if (*task != -1) |
980dbf36 AB |
8838 | error(_("You can specify only one task.")); |
8839 | ||
0a9ccb9d AB |
8840 | if (*thread != -1) |
8841 | error (_("You can specify only one of thread or task.")); | |
8842 | ||
4a306c9a | 8843 | tok = end_tok + 1; |
bbc13ae3 | 8844 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8845 | if (tok == tmptok) |
8846 | error (_("Junk after task keyword.")); | |
8847 | if (!valid_task_id (*task)) | |
b6199126 | 8848 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8849 | tok = tmptok; |
4a306c9a | 8850 | } |
e7e0cddf SS |
8851 | else if (rest) |
8852 | { | |
6f781ee3 | 8853 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8854 | return; |
e7e0cddf | 8855 | } |
018d34a4 VP |
8856 | else |
8857 | error (_("Junk at end of arguments.")); | |
8858 | } | |
8859 | } | |
8860 | ||
b5fa468f TBA |
8861 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8862 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8863 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8864 | for the description of these parameters and INPUT. */ | |
8865 | ||
8866 | static void | |
8867 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8868 | const char *input, |
8869 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8870 | int *thread, int *task, | |
8871 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8872 | { |
8873 | int num_failures = 0; | |
8874 | for (auto &sal : sals) | |
8875 | { | |
6f781ee3 | 8876 | gdb::unique_xmalloc_ptr<char> cond; |
0a9ccb9d | 8877 | int thread_id = -1; |
2ecee236 | 8878 | int task_id = -1; |
6f781ee3 | 8879 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8880 | |
8881 | /* Here we want to parse 'arg' to separate condition from thread | |
8882 | number. But because parsing happens in a context and the | |
8883 | contexts of sals might be different, try each until there is | |
8884 | success. Finding one successful parse is sufficient for our | |
8885 | goal. When setting the breakpoint we'll re-parse the | |
8886 | condition in the context of each sal. */ | |
8887 | try | |
8888 | { | |
8889 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8890 | &task_id, &remaining); | |
6f781ee3 | 8891 | *cond_string = std::move (cond); |
0a9ccb9d | 8892 | /* At most one of thread or task can be set. */ |
2ecee236 | 8893 | gdb_assert (thread_id == -1 || task_id == -1); |
b5fa468f TBA |
8894 | *thread = thread_id; |
8895 | *task = task_id; | |
6f781ee3 | 8896 | *rest = std::move (remaining); |
b5fa468f TBA |
8897 | break; |
8898 | } | |
8899 | catch (const gdb_exception_error &e) | |
8900 | { | |
8901 | num_failures++; | |
8902 | /* If no sal remains, do not continue. */ | |
8903 | if (num_failures == sals.size ()) | |
8904 | throw; | |
8905 | } | |
8906 | } | |
8907 | } | |
8908 | ||
0fb4aa4b PA |
8909 | /* Decode a static tracepoint marker spec. */ |
8910 | ||
6c5b2ebe | 8911 | static std::vector<symtab_and_line> |
f00aae0f | 8912 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8913 | { |
f00aae0f KS |
8914 | const char *p = &(*arg_p)[3]; |
8915 | const char *endp; | |
0fb4aa4b | 8916 | |
f1735a53 | 8917 | p = skip_spaces (p); |
0fb4aa4b | 8918 | |
f1735a53 | 8919 | endp = skip_to_space (p); |
0fb4aa4b | 8920 | |
81b1e71c | 8921 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8922 | |
5d9310c4 SM |
8923 | std::vector<static_tracepoint_marker> markers |
8924 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8925 | if (markers.empty ()) | |
81b1e71c TT |
8926 | error (_("No known static tracepoint marker named %s"), |
8927 | marker_str.c_str ()); | |
0fb4aa4b | 8928 | |
6c5b2ebe | 8929 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8930 | sals.reserve (markers.size ()); |
0fb4aa4b | 8931 | |
5d9310c4 | 8932 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8933 | { |
5d9310c4 SM |
8934 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8935 | sal.pc = marker.address; | |
6c5b2ebe | 8936 | sals.push_back (sal); |
5d9310c4 | 8937 | } |
0fb4aa4b | 8938 | |
0fb4aa4b PA |
8939 | *arg_p = endp; |
8940 | return sals; | |
8941 | } | |
8942 | ||
bac7c5cf GB |
8943 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8944 | according to IS_TRACEPOINT. */ | |
8945 | ||
8946 | static const struct breakpoint_ops * | |
264f9890 PA |
8947 | breakpoint_ops_for_location_spec_type (enum location_spec_type locspec_type, |
8948 | bool is_tracepoint) | |
bac7c5cf GB |
8949 | { |
8950 | if (is_tracepoint) | |
8951 | { | |
264f9890 | 8952 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8953 | return &tracepoint_probe_breakpoint_ops; |
8954 | else | |
74421c0b | 8955 | return &code_breakpoint_ops; |
bac7c5cf GB |
8956 | } |
8957 | else | |
8958 | { | |
264f9890 | 8959 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8960 | return &bkpt_probe_breakpoint_ops; |
8961 | else | |
74421c0b | 8962 | return &code_breakpoint_ops; |
bac7c5cf GB |
8963 | } |
8964 | } | |
8965 | ||
8966 | /* See breakpoint.h. */ | |
8967 | ||
8968 | const struct breakpoint_ops * | |
264f9890 PA |
8969 | breakpoint_ops_for_location_spec (const location_spec *locspec, |
8970 | bool is_tracepoint) | |
bac7c5cf | 8971 | { |
264f9890 PA |
8972 | if (locspec != nullptr) |
8973 | return (breakpoint_ops_for_location_spec_type | |
7464aeaa | 8974 | (locspec->type (), is_tracepoint)); |
74421c0b | 8975 | return &code_breakpoint_ops; |
bac7c5cf GB |
8976 | } |
8977 | ||
f00aae0f | 8978 | /* See breakpoint.h. */ |
0101ce28 | 8979 | |
8cdf0e15 VP |
8980 | int |
8981 | create_breakpoint (struct gdbarch *gdbarch, | |
264f9890 | 8982 | location_spec *locspec, |
e1e01040 PA |
8983 | const char *cond_string, |
8984 | int thread, const char *extra_string, | |
10a636cc | 8985 | bool force_condition, int parse_extra, |
0fb4aa4b | 8986 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
8987 | int ignore_count, |
8988 | enum auto_boolean pending_break_support, | |
c0a91b2b | 8989 | const struct breakpoint_ops *ops, |
44f238bb PA |
8990 | int from_tty, int enabled, int internal, |
8991 | unsigned flags) | |
c3f6f71d | 8992 | { |
7efd8fc2 | 8993 | struct linespec_result canonical; |
d8de7963 | 8994 | bool pending = false; |
2ecee236 | 8995 | int task = -1; |
86b17b60 | 8996 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 8997 | |
348d480f PA |
8998 | gdb_assert (ops != NULL); |
8999 | ||
f00aae0f KS |
9000 | /* If extra_string isn't useful, set it to NULL. */ |
9001 | if (extra_string != NULL && *extra_string == '\0') | |
9002 | extra_string = NULL; | |
9003 | ||
a70b8144 | 9004 | try |
b78a6381 | 9005 | { |
264f9890 | 9006 | ops->create_sals_from_location_spec (locspec, &canonical); |
b78a6381 | 9007 | } |
230d2906 | 9008 | catch (const gdb_exception_error &e) |
0101ce28 | 9009 | { |
492d29ea PA |
9010 | /* If caller is interested in rc value from parse, set |
9011 | value. */ | |
9012 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9013 | { |
05ff989b AC |
9014 | /* If pending breakpoint support is turned off, throw |
9015 | error. */ | |
fa8d40ab JJ |
9016 | |
9017 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9018 | throw; |
723a2275 VP |
9019 | |
9020 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9021 | |
dda83cd7 | 9022 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9023 | selects no, then simply return the error code. */ |
059fb39f | 9024 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9025 | && !nquery (_("Make %s pending on future shared library load? "), |
9026 | bptype_string (type_wanted))) | |
fd9b8c24 | 9027 | return 0; |
fa8d40ab | 9028 | |
05ff989b AC |
9029 | /* At this point, either the user was queried about setting |
9030 | a pending breakpoint and selected yes, or pending | |
9031 | breakpoint behavior is on and thus a pending breakpoint | |
9032 | is defaulted on behalf of the user. */ | |
d8de7963 | 9033 | pending = true; |
0101ce28 | 9034 | } |
492d29ea | 9035 | else |
eedc3f4f | 9036 | throw; |
0101ce28 | 9037 | } |
492d29ea | 9038 | |
6c5b2ebe | 9039 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9040 | return 0; |
c3f6f71d | 9041 | |
c3f6f71d JM |
9042 | /* Resolve all line numbers to PC's and verify that the addresses |
9043 | are ok for the target. */ | |
0101ce28 | 9044 | if (!pending) |
f8eba3c6 | 9045 | { |
6c5b2ebe PA |
9046 | for (auto &lsal : canonical.lsals) |
9047 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9048 | } |
c3f6f71d | 9049 | |
7a697b8d | 9050 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9051 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9052 | { |
6c5b2ebe PA |
9053 | for (const auto &lsal : canonical.lsals) |
9054 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9055 | } |
7a697b8d | 9056 | |
c3f6f71d JM |
9057 | /* Verify that condition can be parsed, before setting any |
9058 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9059 | breakpoint. */ |
0101ce28 | 9060 | if (!pending) |
c3f6f71d | 9061 | { |
e1e01040 PA |
9062 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9063 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9064 | ||
f00aae0f | 9065 | if (parse_extra) |
dda83cd7 | 9066 | { |
6f781ee3 TT |
9067 | gdb::unique_xmalloc_ptr<char> rest; |
9068 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 9069 | |
6c5b2ebe | 9070 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9071 | |
b5fa468f TBA |
9072 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9073 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
9074 | cond_string_copy = std::move (cond); |
9075 | extra_string_copy = std::move (rest); | |
dda83cd7 | 9076 | } |
2f069f6f | 9077 | else |
dda83cd7 | 9078 | { |
f00aae0f KS |
9079 | if (type_wanted != bp_dprintf |
9080 | && extra_string != NULL && *extra_string != '\0') | |
9081 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 9082 | |
10a636cc TBA |
9083 | /* Check the validity of the condition. We should error out |
9084 | if the condition is invalid at all of the locations and | |
9085 | if it is not forced. In the PARSE_EXTRA case above, this | |
9086 | check is done when parsing the EXTRA_STRING. */ | |
9087 | if (cond_string != nullptr && !force_condition) | |
9088 | { | |
9089 | int num_failures = 0; | |
9090 | const linespec_sals &lsal = canonical.lsals[0]; | |
9091 | for (const auto &sal : lsal.sals) | |
9092 | { | |
9093 | const char *cond = cond_string; | |
9094 | try | |
9095 | { | |
9096 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
9097 | /* One success is sufficient to keep going. */ | |
9098 | break; | |
9099 | } | |
9100 | catch (const gdb_exception_error &) | |
9101 | { | |
9102 | num_failures++; | |
9103 | /* If this is the last sal, error out. */ | |
9104 | if (num_failures == lsal.sals.size ()) | |
9105 | throw; | |
9106 | } | |
9107 | } | |
9108 | } | |
9109 | ||
0878d0fa YQ |
9110 | /* Create a private copy of condition string. */ |
9111 | if (cond_string) | |
e1e01040 | 9112 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9113 | /* Create a private copy of any extra string. */ |
9114 | if (extra_string) | |
e1e01040 | 9115 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9116 | } |
0fb4aa4b | 9117 | |
52d361e1 | 9118 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9119 | std::move (cond_string_copy), |
9120 | std::move (extra_string_copy), | |
9121 | type_wanted, | |
d9b3f62e | 9122 | tempflag ? disp_del : disp_donttouch, |
ef4848c7 | 9123 | thread, task, ignore_count, |
44f238bb | 9124 | from_tty, enabled, internal, flags); |
c906108c | 9125 | } |
0101ce28 JJ |
9126 | else |
9127 | { | |
73063f51 TT |
9128 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (gdbarch, |
9129 | type_wanted); | |
5c1ddcb6 | 9130 | b->locspec = locspec->clone (); |
bfccc43c | 9131 | |
f00aae0f KS |
9132 | if (parse_extra) |
9133 | b->cond_string = NULL; | |
e12c7713 MK |
9134 | else |
9135 | { | |
9136 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
9137 | b->cond_string.reset (cond_string != NULL |
9138 | ? xstrdup (cond_string) | |
9139 | : NULL); | |
15630549 | 9140 | b->thread = thread; |
e12c7713 | 9141 | } |
f00aae0f KS |
9142 | |
9143 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
9144 | b->extra_string.reset (extra_string != NULL |
9145 | ? xstrdup (extra_string) | |
9146 | : NULL); | |
0101ce28 | 9147 | b->ignore_count = ignore_count; |
0101ce28 | 9148 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9149 | b->condition_not_parsed = 1; |
41447f92 | 9150 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9151 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9152 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9153 | b->pspace = current_program_space; |
8bea4e01 | 9154 | |
b270e6f9 | 9155 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9156 | } |
9157 | ||
6c5b2ebe | 9158 | if (canonical.lsals.size () > 1) |
95a42b64 | 9159 | { |
3e43a32a MS |
9160 | warning (_("Multiple breakpoints were set.\nUse the " |
9161 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9162 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9163 | } |
9164 | ||
44702360 | 9165 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9166 | |
9167 | return 1; | |
c3f6f71d | 9168 | } |
c906108c | 9169 | |
348d480f | 9170 | /* Set a breakpoint. |
72b2ff0e VP |
9171 | ARG is a string describing breakpoint address, |
9172 | condition, and thread. | |
9173 | FLAG specifies if a breakpoint is hardware on, | |
9174 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9175 | and BP_TEMPFLAG. */ | |
348d480f | 9176 | |
98deb0da | 9177 | static void |
f2fc3015 | 9178 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9179 | { |
72b2ff0e | 9180 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9181 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9182 | ? bp_hardware_breakpoint | |
9183 | : bp_breakpoint); | |
f00aae0f | 9184 | |
264f9890 PA |
9185 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
9186 | const struct breakpoint_ops *ops | |
9187 | = breakpoint_ops_for_location_spec (locspec.get (), | |
9188 | false /* is_tracepoint */); | |
c3f6f71d | 9189 | |
8cdf0e15 | 9190 | create_breakpoint (get_current_arch (), |
264f9890 | 9191 | locspec.get (), |
10a636cc | 9192 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9193 | tempflag, type_wanted, |
8cdf0e15 VP |
9194 | 0 /* Ignore count */, |
9195 | pending_break_support, | |
55aa24fb | 9196 | ops, |
8cdf0e15 | 9197 | from_tty, |
84f4c1fe | 9198 | 1 /* enabled */, |
44f238bb PA |
9199 | 0 /* internal */, |
9200 | 0); | |
c906108c SS |
9201 | } |
9202 | ||
c906108c SS |
9203 | /* Helper function for break_command_1 and disassemble_command. */ |
9204 | ||
9205 | void | |
fba45db2 | 9206 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9207 | { |
9208 | CORE_ADDR pc; | |
9209 | ||
9210 | if (sal->pc == 0 && sal->symtab != NULL) | |
9211 | { | |
9212 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9213 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9214 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9215 | sal->pc = pc; |
6a048695 | 9216 | |
4a64f543 | 9217 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9218 | number, then skip the function prologue if necessary. */ |
6a048695 | 9219 | if (sal->explicit_line) |
059acae7 | 9220 | skip_prologue_sal (sal); |
c906108c SS |
9221 | } |
9222 | ||
9223 | if (sal->section == 0 && sal->symtab != NULL) | |
9224 | { | |
346d1dfe | 9225 | const struct blockvector *bv; |
3977b71f | 9226 | const struct block *b; |
c5aa993b | 9227 | struct symbol *sym; |
c906108c | 9228 | |
43f3e411 | 9229 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9230 | sal->symtab->compunit ()); |
c906108c SS |
9231 | if (bv != NULL) |
9232 | { | |
7f0df278 | 9233 | sym = block_linkage_function (b); |
c906108c | 9234 | if (sym != NULL) |
dae58e04 TT |
9235 | sal->section |
9236 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9237 | else |
9238 | { | |
4a64f543 | 9239 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9240 | just have to look harder. This case can be executed |
9241 | if we have line numbers but no functions (as can | |
9242 | happen in assembly source). */ | |
c906108c | 9243 | |
5ed8105e | 9244 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9245 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9246 | |
5ed8105e | 9247 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9248 | if (msym.minsym) |
1db66e34 | 9249 | sal->section = msym.obj_section (); |
c906108c SS |
9250 | } |
9251 | } | |
9252 | } | |
9253 | } | |
9254 | ||
9255 | void | |
0b39b52e | 9256 | break_command (const char *arg, int from_tty) |
c906108c | 9257 | { |
db107f19 | 9258 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9259 | } |
9260 | ||
c906108c | 9261 | void |
0b39b52e | 9262 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9263 | { |
db107f19 | 9264 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9265 | } |
9266 | ||
c906108c | 9267 | static void |
0b39b52e | 9268 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9269 | { |
db107f19 | 9270 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9271 | } |
9272 | ||
9273 | static void | |
0b39b52e | 9274 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9275 | { |
db107f19 | 9276 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9277 | } |
9278 | ||
e7e0cddf SS |
9279 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9280 | with a prewired command list consisting of a single output command, | |
9281 | built from extra arguments supplied on the dprintf command | |
9282 | line. */ | |
9283 | ||
da821c7b | 9284 | static void |
0b39b52e | 9285 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9286 | { |
264f9890 | 9287 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f KS |
9288 | |
9289 | /* If non-NULL, ARG should have been advanced past the location; | |
9290 | the next character must be ','. */ | |
9291 | if (arg != NULL) | |
9292 | { | |
9293 | if (arg[0] != ',' || arg[1] == '\0') | |
9294 | error (_("Format string required")); | |
9295 | else | |
9296 | { | |
9297 | /* Skip the comma. */ | |
9298 | ++arg; | |
9299 | } | |
9300 | } | |
9301 | ||
e7e0cddf | 9302 | create_breakpoint (get_current_arch (), |
264f9890 | 9303 | locspec.get (), |
10a636cc | 9304 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9305 | 0, bp_dprintf, |
9306 | 0 /* Ignore count */, | |
9307 | pending_break_support, | |
74421c0b | 9308 | &code_breakpoint_ops, |
e7e0cddf SS |
9309 | from_tty, |
9310 | 1 /* enabled */, | |
9311 | 0 /* internal */, | |
9312 | 0); | |
9313 | } | |
9314 | ||
d3ce09f5 | 9315 | static void |
0b39b52e | 9316 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9317 | { |
9318 | error (_("May only run agent-printf on the target")); | |
9319 | } | |
9320 | ||
ec45bb67 | 9321 | /* Implement the "breakpoint_hit" method for ranged breakpoints. */ |
f1310107 | 9322 | |
ec45bb67 TT |
9323 | int |
9324 | ranged_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
9325 | const address_space *aspace, | |
9326 | CORE_ADDR bp_addr, | |
9327 | const target_waitstatus &ws) | |
f1310107 | 9328 | { |
c272a98c SM |
9329 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9330 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9331 | return 0; |
9332 | ||
f1310107 TJB |
9333 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9334 | bl->length, aspace, bp_addr); | |
9335 | } | |
9336 | ||
ec45bb67 | 9337 | /* Implement the "resources_needed" method for ranged breakpoints. */ |
f1310107 | 9338 | |
ec45bb67 TT |
9339 | int |
9340 | ranged_breakpoint::resources_needed (const struct bp_location *bl) | |
f1310107 TJB |
9341 | { |
9342 | return target_ranged_break_num_registers (); | |
9343 | } | |
9344 | ||
ec45bb67 | 9345 | /* Implement the "print_it" method for ranged breakpoints. */ |
f1310107 | 9346 | |
ec45bb67 | 9347 | enum print_stop_action |
7bd86313 | 9348 | ranged_breakpoint::print_it (const bpstat *bs) const |
f1310107 | 9349 | { |
ec45bb67 | 9350 | struct bp_location *bl = loc; |
79a45e25 | 9351 | struct ui_out *uiout = current_uiout; |
f1310107 | 9352 | |
ec45bb67 | 9353 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 TJB |
9354 | |
9355 | /* Ranged breakpoints have only one location. */ | |
9356 | gdb_assert (bl && bl->next == NULL); | |
9357 | ||
ec45bb67 | 9358 | annotate_breakpoint (number); |
f303dbd6 PA |
9359 | |
9360 | maybe_print_thread_hit_breakpoint (uiout); | |
9361 | ||
ec45bb67 | 9362 | if (disposition == disp_del) |
112e8700 | 9363 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9364 | else |
112e8700 SM |
9365 | uiout->text ("Ranged breakpoint "); |
9366 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9367 | { |
112e8700 | 9368 | uiout->field_string ("reason", |
f1310107 | 9369 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
ec45bb67 | 9370 | uiout->field_string ("disp", bpdisp_text (disposition)); |
f1310107 | 9371 | } |
78805ff8 | 9372 | print_num_locno (bs, uiout); |
112e8700 | 9373 | uiout->text (", "); |
f1310107 TJB |
9374 | |
9375 | return PRINT_SRC_AND_LOC; | |
9376 | } | |
9377 | ||
ec45bb67 | 9378 | /* Implement the "print_one" method for ranged breakpoints. */ |
f1310107 | 9379 | |
ec45bb67 | 9380 | bool |
a67bcaba | 9381 | ranged_breakpoint::print_one (bp_location **last_loc) const |
f1310107 | 9382 | { |
ec45bb67 | 9383 | struct bp_location *bl = loc; |
f1310107 | 9384 | struct value_print_options opts; |
79a45e25 | 9385 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9386 | |
9387 | /* Ranged breakpoints have only one location. */ | |
9388 | gdb_assert (bl && bl->next == NULL); | |
9389 | ||
9390 | get_user_print_options (&opts); | |
9391 | ||
9392 | if (opts.addressprint) | |
9393 | /* We don't print the address range here, it will be printed later | |
f7968895 | 9394 | by ranged_breakpoint::print_one_detail. */ |
112e8700 | 9395 | uiout->field_skip ("addr"); |
f1310107 | 9396 | annotate_field (5); |
ec45bb67 | 9397 | print_breakpoint_location (this, bl); |
f1310107 | 9398 | *last_loc = bl; |
c01e038b TT |
9399 | |
9400 | return true; | |
f1310107 TJB |
9401 | } |
9402 | ||
ec45bb67 | 9403 | /* Implement the "print_one_detail" method for ranged breakpoints. */ |
f1310107 | 9404 | |
ec45bb67 TT |
9405 | void |
9406 | ranged_breakpoint::print_one_detail (struct ui_out *uiout) const | |
f1310107 TJB |
9407 | { |
9408 | CORE_ADDR address_start, address_end; | |
ec45bb67 | 9409 | struct bp_location *bl = loc; |
d7e74731 | 9410 | string_file stb; |
f1310107 TJB |
9411 | |
9412 | gdb_assert (bl); | |
9413 | ||
9414 | address_start = bl->address; | |
9415 | address_end = address_start + bl->length - 1; | |
9416 | ||
112e8700 | 9417 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9418 | stb.printf ("[%s, %s]", |
9419 | print_core_address (bl->gdbarch, address_start), | |
9420 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9421 | uiout->field_stream ("addr", stb); |
9422 | uiout->text ("\n"); | |
f1310107 TJB |
9423 | } |
9424 | ||
ec45bb67 | 9425 | /* Implement the "print_mention" method for ranged breakpoints. */ |
f1310107 | 9426 | |
ec45bb67 | 9427 | void |
b713485d | 9428 | ranged_breakpoint::print_mention () const |
f1310107 | 9429 | { |
ec45bb67 | 9430 | struct bp_location *bl = loc; |
79a45e25 | 9431 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9432 | |
9433 | gdb_assert (bl); | |
ec45bb67 | 9434 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 | 9435 | |
2d33446d | 9436 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
ec45bb67 | 9437 | number, paddress (bl->gdbarch, bl->address), |
2d33446d | 9438 | paddress (bl->gdbarch, bl->address + bl->length - 1)); |
f1310107 TJB |
9439 | } |
9440 | ||
ec45bb67 | 9441 | /* Implement the "print_recreate" method for ranged breakpoints. */ |
f1310107 | 9442 | |
ec45bb67 | 9443 | void |
4d1ae558 | 9444 | ranged_breakpoint::print_recreate (struct ui_file *fp) const |
f1310107 | 9445 | { |
6cb06a8c | 9446 | gdb_printf (fp, "break-range %s, %s", |
709438c7 PA |
9447 | locspec->to_string (), |
9448 | locspec_range_end->to_string ()); | |
04d0163c | 9449 | print_recreate_thread (fp); |
f1310107 TJB |
9450 | } |
9451 | ||
f1310107 TJB |
9452 | /* Find the address where the end of the breakpoint range should be |
9453 | placed, given the SAL of the end of the range. This is so that if | |
9454 | the user provides a line number, the end of the range is set to the | |
9455 | last instruction of the given line. */ | |
9456 | ||
9457 | static CORE_ADDR | |
9458 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9459 | { | |
9460 | CORE_ADDR end; | |
9461 | ||
9462 | /* If the user provided a PC value, use it. Otherwise, | |
9463 | find the address of the end of the given location. */ | |
9464 | if (sal.explicit_pc) | |
9465 | end = sal.pc; | |
9466 | else | |
9467 | { | |
9468 | int ret; | |
9469 | CORE_ADDR start; | |
9470 | ||
9471 | ret = find_line_pc_range (sal, &start, &end); | |
9472 | if (!ret) | |
9473 | error (_("Could not find location of the end of the range.")); | |
9474 | ||
9475 | /* find_line_pc_range returns the start of the next line. */ | |
9476 | end--; | |
9477 | } | |
9478 | ||
9479 | return end; | |
9480 | } | |
9481 | ||
9482 | /* Implement the "break-range" CLI command. */ | |
9483 | ||
9484 | static void | |
0b39b52e | 9485 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9486 | { |
f2fc3015 | 9487 | const char *arg_start; |
f1310107 TJB |
9488 | struct linespec_result canonical_start, canonical_end; |
9489 | int bp_count, can_use_bp, length; | |
9490 | CORE_ADDR end; | |
f1310107 TJB |
9491 | |
9492 | /* We don't support software ranged breakpoints. */ | |
9493 | if (target_ranged_break_num_registers () < 0) | |
9494 | error (_("This target does not support hardware ranged breakpoints.")); | |
9495 | ||
9496 | bp_count = hw_breakpoint_used_count (); | |
9497 | bp_count += target_ranged_break_num_registers (); | |
9498 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9499 | bp_count, 0); | |
9500 | if (can_use_bp < 0) | |
9501 | error (_("Hardware breakpoints used exceeds limit.")); | |
9502 | ||
f8eba3c6 | 9503 | arg = skip_spaces (arg); |
f1310107 TJB |
9504 | if (arg == NULL || arg[0] == '\0') |
9505 | error(_("No address range specified.")); | |
9506 | ||
f8eba3c6 | 9507 | arg_start = arg; |
264f9890 PA |
9508 | location_spec_up start_locspec |
9509 | = string_to_location_spec (&arg, current_language); | |
9510 | parse_breakpoint_sals (start_locspec.get (), &canonical_start); | |
f1310107 TJB |
9511 | |
9512 | if (arg[0] != ',') | |
9513 | error (_("Too few arguments.")); | |
6c5b2ebe | 9514 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9515 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9516 | |
6c5b2ebe | 9517 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9518 | |
6c5b2ebe PA |
9519 | if (canonical_start.lsals.size () > 1 |
9520 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9521 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9522 | ||
6c5b2ebe | 9523 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9524 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9525 | |
9526 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9527 | arg = skip_spaces (arg); |
f1310107 | 9528 | |
264f9890 | 9529 | /* Parse the end location specification. */ |
f1310107 | 9530 | |
f1310107 TJB |
9531 | arg_start = arg; |
9532 | ||
f8eba3c6 | 9533 | /* We call decode_line_full directly here instead of using |
264f9890 PA |
9534 | parse_breakpoint_sals because we need to specify the start |
9535 | location spec's symtab and line as the default symtab and line | |
9536 | for the end of the range. This makes it possible to have ranges | |
9537 | like "foo.c:27, +14", where +14 means 14 lines from the start | |
9538 | location spec. */ | |
9539 | location_spec_up end_locspec | |
9540 | = string_to_location_spec (&arg, current_language); | |
9541 | decode_line_full (end_locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9542 | sal_start.symtab, sal_start.line, |
9543 | &canonical_end, NULL, NULL); | |
9544 | ||
6c5b2ebe | 9545 | if (canonical_end.lsals.empty ()) |
f1310107 | 9546 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9547 | |
6c5b2ebe PA |
9548 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9549 | if (canonical_end.lsals.size () > 1 | |
9550 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9551 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9552 | ||
6c5b2ebe | 9553 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9554 | |
9555 | end = find_breakpoint_range_end (sal_end); | |
9556 | if (sal_start.pc > end) | |
177b42fe | 9557 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9558 | |
9559 | length = end - sal_start.pc + 1; | |
9560 | if (length < 0) | |
9561 | /* Length overflowed. */ | |
9562 | error (_("Address range too large.")); | |
9563 | else if (length == 1) | |
9564 | { | |
9565 | /* This range is simple enough to be handled by | |
9566 | the `hbreak' command. */ | |
81b1e71c | 9567 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9568 | |
9569 | return; | |
9570 | } | |
9571 | ||
b925bf21 PA |
9572 | /* Now set up the breakpoint and install it. */ |
9573 | ||
9574 | std::unique_ptr<breakpoint> br | |
9575 | (new ranged_breakpoint (get_current_arch (), | |
9576 | sal_start, length, | |
264f9890 PA |
9577 | std::move (start_locspec), |
9578 | std::move (end_locspec))); | |
f1310107 | 9579 | |
27a62b43 | 9580 | install_breakpoint (false, std::move (br), true); |
f1310107 TJB |
9581 | } |
9582 | ||
4a64f543 MS |
9583 | /* Return non-zero if EXP is verified as constant. Returned zero |
9584 | means EXP is variable. Also the constant detection may fail for | |
9585 | some constant expressions and in such case still falsely return | |
9586 | zero. */ | |
2e6e3d9c | 9587 | |
dab72643 | 9588 | static bool |
65d79d4b SDJ |
9589 | watchpoint_exp_is_const (const struct expression *exp) |
9590 | { | |
1eaebe02 | 9591 | return exp->op->constant_p (); |
65d79d4b SDJ |
9592 | } |
9593 | ||
3a292923 | 9594 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9595 | |
3a292923 TT |
9596 | void |
9597 | watchpoint::re_set () | |
348d480f PA |
9598 | { |
9599 | /* Watchpoint can be either on expression using entirely global | |
9600 | variables, or it can be on local variables. | |
9601 | ||
9602 | Watchpoints of the first kind are never auto-deleted, and even | |
9603 | persist across program restarts. Since they can use variables | |
9604 | from shared libraries, we need to reparse expression as libraries | |
9605 | are loaded and unloaded. | |
9606 | ||
9607 | Watchpoints on local variables can also change meaning as result | |
9608 | of solib event. For example, if a watchpoint uses both a local | |
9609 | and a global variables in expression, it's a local watchpoint, | |
9610 | but unloading of a shared library will make the expression | |
9611 | invalid. This is not a very common use case, but we still | |
9612 | re-evaluate expression, to avoid surprises to the user. | |
9613 | ||
9614 | Note that for local watchpoints, we re-evaluate it only if | |
9615 | watchpoints frame id is still valid. If it's not, it means the | |
9616 | watchpoint is out of scope and will be deleted soon. In fact, | |
9617 | I'm not sure we'll ever be called in this case. | |
9618 | ||
9619 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9620 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9621 | |
3a5c3e22 PA |
9622 | Don't do anything about disabled watchpoints, since they will be |
9623 | reevaluated again when enabled. */ | |
d8de7963 | 9624 | update_watchpoint (this, true /* reparse */); |
348d480f PA |
9625 | } |
9626 | ||
3a292923 | 9627 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9628 | |
3a292923 TT |
9629 | int |
9630 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9631 | { |
3a292923 | 9632 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9633 | |
9634 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9635 | cond_exp.get ()); |
77b06cd7 TJB |
9636 | } |
9637 | ||
3a292923 | 9638 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9639 | |
3a292923 TT |
9640 | int |
9641 | watchpoint::remove_location (struct bp_location *bl, | |
9642 | enum remove_bp_reason reason) | |
77b06cd7 | 9643 | { |
3a292923 | 9644 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9645 | |
9646 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9647 | cond_exp.get ()); |
e09342b5 TJB |
9648 | } |
9649 | ||
3a292923 TT |
9650 | int |
9651 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9652 | const address_space *aspace, CORE_ADDR bp_addr, | |
9653 | const target_waitstatus &ws) | |
e09342b5 | 9654 | { |
348d480f | 9655 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9656 | |
348d480f PA |
9657 | /* Continuable hardware watchpoints are treated as non-existent if the |
9658 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9659 | some data address). Otherwise gdb won't stop on a break instruction | |
9660 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9661 | been defined. Also skip watchpoints which we know did not trigger | |
9662 | (did not match the data address). */ | |
9663 | if (is_hardware_watchpoint (b) | |
3a292923 | 9664 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9665 | return 0; |
9c06b0b4 | 9666 | |
348d480f | 9667 | return 1; |
9c06b0b4 TJB |
9668 | } |
9669 | ||
3a292923 TT |
9670 | void |
9671 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9672 | { |
348d480f | 9673 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9674 | |
348d480f | 9675 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9676 | } |
9677 | ||
3a292923 TT |
9678 | /* Implement the "resources_needed" method for hardware |
9679 | watchpoints. */ | |
9c06b0b4 | 9680 | |
3a292923 TT |
9681 | int |
9682 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9683 | { |
3a292923 | 9684 | int length = exact? 1 : bl->length; |
348d480f PA |
9685 | |
9686 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9687 | } |
9688 | ||
3a292923 TT |
9689 | /* Implement the "works_in_software_mode" method for hardware |
9690 | watchpoints. */ | |
9c06b0b4 | 9691 | |
5a61e176 | 9692 | bool |
3a292923 | 9693 | watchpoint::works_in_software_mode () const |
9c06b0b4 | 9694 | { |
efa80663 | 9695 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9696 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9697 | } |
9698 | ||
3a292923 | 9699 | enum print_stop_action |
7bd86313 | 9700 | watchpoint::print_it (const bpstat *bs) const |
9c06b0b4 | 9701 | { |
348d480f | 9702 | struct breakpoint *b; |
348d480f | 9703 | enum print_stop_action result; |
79a45e25 | 9704 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9705 | |
9706 | gdb_assert (bs->bp_location_at != NULL); | |
9707 | ||
348d480f PA |
9708 | b = bs->breakpoint_at; |
9709 | ||
f303dbd6 PA |
9710 | annotate_watchpoint (b->number); |
9711 | maybe_print_thread_hit_breakpoint (uiout); | |
9712 | ||
d7e74731 PA |
9713 | string_file stb; |
9714 | ||
76f9c9cf | 9715 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9716 | switch (b->type) |
9717 | { | |
348d480f | 9718 | case bp_watchpoint: |
9c06b0b4 | 9719 | case bp_hardware_watchpoint: |
112e8700 SM |
9720 | if (uiout->is_mi_like_p ()) |
9721 | uiout->field_string | |
9722 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9723 | mention (b); |
76f9c9cf | 9724 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9725 | uiout->text ("\nOld value = "); |
850645cf | 9726 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9727 | uiout->field_stream ("old", stb); |
9728 | uiout->text ("\nNew value = "); | |
3a292923 | 9729 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9730 | uiout->field_stream ("new", stb); |
9731 | uiout->text ("\n"); | |
348d480f PA |
9732 | /* More than one watchpoint may have been triggered. */ |
9733 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9734 | break; |
9735 | ||
9736 | case bp_read_watchpoint: | |
112e8700 SM |
9737 | if (uiout->is_mi_like_p ()) |
9738 | uiout->field_string | |
9739 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9740 | mention (b); |
76f9c9cf | 9741 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9742 | uiout->text ("\nValue = "); |
3a292923 | 9743 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9744 | uiout->field_stream ("value", stb); |
9745 | uiout->text ("\n"); | |
348d480f | 9746 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9747 | break; |
9748 | ||
9749 | case bp_access_watchpoint: | |
348d480f PA |
9750 | if (bs->old_val != NULL) |
9751 | { | |
112e8700 SM |
9752 | if (uiout->is_mi_like_p ()) |
9753 | uiout->field_string | |
9754 | ("reason", | |
348d480f PA |
9755 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9756 | mention (b); | |
76f9c9cf | 9757 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9758 | uiout->text ("\nOld value = "); |
850645cf | 9759 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9760 | uiout->field_stream ("old", stb); |
9761 | uiout->text ("\nNew value = "); | |
348d480f PA |
9762 | } |
9763 | else | |
9764 | { | |
9765 | mention (b); | |
112e8700 SM |
9766 | if (uiout->is_mi_like_p ()) |
9767 | uiout->field_string | |
9768 | ("reason", | |
348d480f | 9769 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9770 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9771 | uiout->text ("\nValue = "); |
348d480f | 9772 | } |
3a292923 | 9773 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9774 | uiout->field_stream ("new", stb); |
9775 | uiout->text ("\n"); | |
348d480f | 9776 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9777 | break; |
9778 | default: | |
348d480f | 9779 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9780 | } |
9781 | ||
348d480f PA |
9782 | return result; |
9783 | } | |
9784 | ||
3a292923 | 9785 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9786 | |
3a292923 | 9787 | void |
b713485d | 9788 | watchpoint::print_mention () const |
348d480f | 9789 | { |
79a45e25 | 9790 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9791 | const char *tuple_name; |
348d480f | 9792 | |
3a292923 | 9793 | switch (type) |
348d480f PA |
9794 | { |
9795 | case bp_watchpoint: | |
112e8700 | 9796 | uiout->text ("Watchpoint "); |
46b9c129 | 9797 | tuple_name = "wpt"; |
348d480f PA |
9798 | break; |
9799 | case bp_hardware_watchpoint: | |
112e8700 | 9800 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9801 | tuple_name = "wpt"; |
348d480f PA |
9802 | break; |
9803 | case bp_read_watchpoint: | |
112e8700 | 9804 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9805 | tuple_name = "hw-rwpt"; |
348d480f PA |
9806 | break; |
9807 | case bp_access_watchpoint: | |
112e8700 | 9808 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9809 | tuple_name = "hw-awpt"; |
348d480f PA |
9810 | break; |
9811 | default: | |
f34652de | 9812 | internal_error (_("Invalid hardware watchpoint type.")); |
348d480f PA |
9813 | } |
9814 | ||
46b9c129 | 9815 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9816 | uiout->field_signed ("number", number); |
112e8700 | 9817 | uiout->text (": "); |
3a292923 | 9818 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9819 | } |
9820 | ||
3a292923 | 9821 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9822 | |
3a292923 | 9823 | void |
4d1ae558 | 9824 | watchpoint::print_recreate (struct ui_file *fp) const |
348d480f | 9825 | { |
3a292923 | 9826 | switch (type) |
348d480f PA |
9827 | { |
9828 | case bp_watchpoint: | |
9829 | case bp_hardware_watchpoint: | |
6cb06a8c | 9830 | gdb_printf (fp, "watch"); |
348d480f PA |
9831 | break; |
9832 | case bp_read_watchpoint: | |
6cb06a8c | 9833 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9834 | break; |
9835 | case bp_access_watchpoint: | |
6cb06a8c | 9836 | gdb_printf (fp, "awatch"); |
348d480f PA |
9837 | break; |
9838 | default: | |
f34652de | 9839 | internal_error (_("Invalid watchpoint type.")); |
348d480f PA |
9840 | } |
9841 | ||
3a292923 | 9842 | gdb_printf (fp, " %s", exp_string.get ()); |
04d0163c | 9843 | print_recreate_thread (fp); |
348d480f PA |
9844 | } |
9845 | ||
3a292923 | 9846 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9847 | |
a6860f3a | 9848 | bool |
3a292923 | 9849 | watchpoint::explains_signal (enum gdb_signal sig) |
427cd150 TT |
9850 | { |
9851 | /* A software watchpoint cannot cause a signal other than | |
9852 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9853 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
a6860f3a | 9854 | return false; |
427cd150 | 9855 | |
a6860f3a | 9856 | return true; |
427cd150 TT |
9857 | } |
9858 | ||
3a292923 TT |
9859 | struct masked_watchpoint : public watchpoint |
9860 | { | |
73063f51 TT |
9861 | using watchpoint::watchpoint; |
9862 | ||
3a292923 TT |
9863 | int insert_location (struct bp_location *) override; |
9864 | int remove_location (struct bp_location *, | |
9865 | enum remove_bp_reason reason) override; | |
9866 | int resources_needed (const struct bp_location *) override; | |
5a61e176 | 9867 | bool works_in_software_mode () const override; |
7bd86313 | 9868 | enum print_stop_action print_it (const bpstat *bs) const override; |
3a292923 | 9869 | void print_one_detail (struct ui_out *) const override; |
b713485d | 9870 | void print_mention () const override; |
4d1ae558 | 9871 | void print_recreate (struct ui_file *fp) const override; |
3a292923 | 9872 | }; |
348d480f | 9873 | |
3a292923 | 9874 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9875 | |
3a292923 TT |
9876 | int |
9877 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9878 | { |
3a292923 | 9879 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9880 | bl->watchpoint_type); |
9881 | } | |
9882 | ||
3a292923 | 9883 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9884 | |
3a292923 TT |
9885 | int |
9886 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9887 | enum remove_bp_reason reason) | |
348d480f | 9888 | { |
3a292923 | 9889 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9890 | bl->watchpoint_type); |
348d480f PA |
9891 | } |
9892 | ||
3a292923 TT |
9893 | /* Implement the "resources_needed" method for masked hardware |
9894 | watchpoints. */ | |
348d480f | 9895 | |
3a292923 TT |
9896 | int |
9897 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9898 | { |
3a292923 | 9899 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9900 | } |
9901 | ||
3a292923 TT |
9902 | /* Implement the "works_in_software_mode" method for masked hardware |
9903 | watchpoints. */ | |
348d480f | 9904 | |
5a61e176 | 9905 | bool |
3a292923 | 9906 | masked_watchpoint::works_in_software_mode () const |
348d480f | 9907 | { |
5a61e176 | 9908 | return false; |
348d480f PA |
9909 | } |
9910 | ||
3a292923 TT |
9911 | /* Implement the "print_it" method for masked hardware |
9912 | watchpoints. */ | |
348d480f | 9913 | |
3a292923 | 9914 | enum print_stop_action |
7bd86313 | 9915 | masked_watchpoint::print_it (const bpstat *bs) const |
348d480f PA |
9916 | { |
9917 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9918 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9919 | |
9920 | /* Masked watchpoints have only one location. */ | |
9921 | gdb_assert (b->loc && b->loc->next == NULL); | |
9922 | ||
f303dbd6 PA |
9923 | annotate_watchpoint (b->number); |
9924 | maybe_print_thread_hit_breakpoint (uiout); | |
9925 | ||
348d480f PA |
9926 | switch (b->type) |
9927 | { | |
9928 | case bp_hardware_watchpoint: | |
112e8700 SM |
9929 | if (uiout->is_mi_like_p ()) |
9930 | uiout->field_string | |
9931 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9932 | break; |
9933 | ||
9934 | case bp_read_watchpoint: | |
112e8700 SM |
9935 | if (uiout->is_mi_like_p ()) |
9936 | uiout->field_string | |
9937 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9938 | break; |
9939 | ||
9940 | case bp_access_watchpoint: | |
112e8700 SM |
9941 | if (uiout->is_mi_like_p ()) |
9942 | uiout->field_string | |
9943 | ("reason", | |
348d480f PA |
9944 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9945 | break; | |
9946 | default: | |
f34652de | 9947 | internal_error (_("Invalid hardware watchpoint type.")); |
348d480f PA |
9948 | } |
9949 | ||
9950 | mention (b); | |
112e8700 | 9951 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9952 | Check the underlying instruction at PC for the memory\n\ |
9953 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9954 | uiout->text ("\n"); |
9c06b0b4 TJB |
9955 | |
9956 | /* More than one watchpoint may have been triggered. */ | |
9957 | return PRINT_UNKNOWN; | |
9958 | } | |
9959 | ||
3a292923 TT |
9960 | /* Implement the "print_one_detail" method for masked hardware |
9961 | watchpoints. */ | |
9c06b0b4 | 9962 | |
3a292923 TT |
9963 | void |
9964 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9965 | { |
9966 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9967 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9968 | |
112e8700 | 9969 | uiout->text ("\tmask "); |
3a292923 | 9970 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 9971 | uiout->text ("\n"); |
9c06b0b4 TJB |
9972 | } |
9973 | ||
3a292923 TT |
9974 | /* Implement the "print_mention" method for masked hardware |
9975 | watchpoints. */ | |
9c06b0b4 | 9976 | |
3a292923 | 9977 | void |
b713485d | 9978 | masked_watchpoint::print_mention () const |
9c06b0b4 | 9979 | { |
79a45e25 | 9980 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9981 | const char *tuple_name; |
9c06b0b4 | 9982 | |
3a292923 | 9983 | switch (type) |
9c06b0b4 TJB |
9984 | { |
9985 | case bp_hardware_watchpoint: | |
112e8700 | 9986 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 9987 | tuple_name = "wpt"; |
9c06b0b4 TJB |
9988 | break; |
9989 | case bp_read_watchpoint: | |
112e8700 | 9990 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 9991 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
9992 | break; |
9993 | case bp_access_watchpoint: | |
112e8700 | 9994 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 9995 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
9996 | break; |
9997 | default: | |
f34652de | 9998 | internal_error (_("Invalid hardware watchpoint type.")); |
9c06b0b4 TJB |
9999 | } |
10000 | ||
46b9c129 | 10001 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 10002 | uiout->field_signed ("number", number); |
112e8700 | 10003 | uiout->text (": "); |
3a292923 | 10004 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
10005 | } |
10006 | ||
3a292923 TT |
10007 | /* Implement the "print_recreate" method for masked hardware |
10008 | watchpoints. */ | |
9c06b0b4 | 10009 | |
3a292923 | 10010 | void |
4d1ae558 | 10011 | masked_watchpoint::print_recreate (struct ui_file *fp) const |
9c06b0b4 | 10012 | { |
3a292923 | 10013 | switch (type) |
9c06b0b4 TJB |
10014 | { |
10015 | case bp_hardware_watchpoint: | |
6cb06a8c | 10016 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
10017 | break; |
10018 | case bp_read_watchpoint: | |
6cb06a8c | 10019 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
10020 | break; |
10021 | case bp_access_watchpoint: | |
6cb06a8c | 10022 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
10023 | break; |
10024 | default: | |
f34652de | 10025 | internal_error (_("Invalid hardware watchpoint type.")); |
9c06b0b4 TJB |
10026 | } |
10027 | ||
3a292923 TT |
10028 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
10029 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
04d0163c | 10030 | print_recreate_thread (fp); |
9c06b0b4 TJB |
10031 | } |
10032 | ||
9c06b0b4 TJB |
10033 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
10034 | ||
f2478a7e | 10035 | static bool |
9c06b0b4 TJB |
10036 | is_masked_watchpoint (const struct breakpoint *b) |
10037 | { | |
3a292923 | 10038 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
10039 | } |
10040 | ||
53a5351d | 10041 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10042 | hw_read: watch read, |
53a5351d | 10043 | hw_access: watch access (read or write) */ |
c906108c | 10044 | static void |
bbc13ae3 | 10045 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10046 | bool just_location, bool internal) |
c906108c | 10047 | { |
c1fc2657 | 10048 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10049 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10050 | struct value *result; |
bb9d5f81 | 10051 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10052 | const char *exp_start = NULL; |
10053 | const char *exp_end = NULL; | |
10054 | const char *tok, *end_tok; | |
9c06b0b4 | 10055 | int toklen = -1; |
bbc13ae3 KS |
10056 | const char *cond_start = NULL; |
10057 | const char *cond_end = NULL; | |
c906108c | 10058 | enum bptype bp_type; |
37e4754d | 10059 | int thread = -1; |
9c06b0b4 TJB |
10060 | /* Flag to indicate whether we are going to use masks for |
10061 | the hardware watchpoint. */ | |
2e362716 | 10062 | bool use_mask = false; |
9c06b0b4 | 10063 | CORE_ADDR mask = 0; |
2ecee236 | 10064 | int task = -1; |
c906108c | 10065 | |
37e4754d LM |
10066 | /* Make sure that we actually have parameters to parse. */ |
10067 | if (arg != NULL && arg[0] != '\0') | |
10068 | { | |
bbc13ae3 KS |
10069 | const char *value_start; |
10070 | ||
10071 | exp_end = arg + strlen (arg); | |
37e4754d | 10072 | |
9c06b0b4 TJB |
10073 | /* Look for "parameter value" pairs at the end |
10074 | of the arguments string. */ | |
bbc13ae3 | 10075 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10076 | { |
10077 | /* Skip whitespace at the end of the argument list. */ | |
10078 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10079 | tok--; | |
10080 | ||
10081 | /* Find the beginning of the last token. | |
10082 | This is the value of the parameter. */ | |
10083 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10084 | tok--; | |
10085 | value_start = tok + 1; | |
10086 | ||
10087 | /* Skip whitespace. */ | |
10088 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10089 | tok--; | |
10090 | ||
10091 | end_tok = tok; | |
10092 | ||
10093 | /* Find the beginning of the second to last token. | |
10094 | This is the parameter itself. */ | |
10095 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10096 | tok--; | |
10097 | tok++; | |
10098 | toklen = end_tok - tok + 1; | |
10099 | ||
61012eef | 10100 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10101 | { |
5d5658a1 | 10102 | struct thread_info *thr; |
9c06b0b4 TJB |
10103 | /* At this point we've found a "thread" token, which means |
10104 | the user is trying to set a watchpoint that triggers | |
10105 | only in a specific thread. */ | |
5d5658a1 | 10106 | const char *endp; |
37e4754d | 10107 | |
9c06b0b4 TJB |
10108 | if (thread != -1) |
10109 | error(_("You can specify only one thread.")); | |
37e4754d | 10110 | |
2ecee236 | 10111 | if (task != -1) |
0a9ccb9d AB |
10112 | error (_("You can specify only one of thread or task.")); |
10113 | ||
9c06b0b4 | 10114 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10115 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10116 | |
5d5658a1 | 10117 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10118 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10119 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10120 | |
5d5658a1 | 10121 | thread = thr->global_num; |
9c06b0b4 | 10122 | } |
8a18382f TT |
10123 | else if (toklen == 4 && startswith (tok, "task")) |
10124 | { | |
10125 | char *tmp; | |
10126 | ||
2ecee236 | 10127 | if (task != -1) |
980dbf36 AB |
10128 | error(_("You can specify only one task.")); |
10129 | ||
0a9ccb9d AB |
10130 | if (thread != -1) |
10131 | error (_("You can specify only one of thread or task.")); | |
10132 | ||
8a18382f TT |
10133 | task = strtol (value_start, &tmp, 0); |
10134 | if (tmp == value_start) | |
10135 | error (_("Junk after task keyword.")); | |
10136 | if (!valid_task_id (task)) | |
10137 | error (_("Unknown task %d."), task); | |
10138 | } | |
61012eef | 10139 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10140 | { |
10141 | /* We've found a "mask" token, which means the user wants to | |
10142 | create a hardware watchpoint that is going to have the mask | |
10143 | facility. */ | |
65558ca5 | 10144 | struct value *mask_value; |
37e4754d | 10145 | |
9c06b0b4 TJB |
10146 | if (use_mask) |
10147 | error(_("You can specify only one mask.")); | |
37e4754d | 10148 | |
2e362716 | 10149 | use_mask = just_location = true; |
37e4754d | 10150 | |
65558ca5 | 10151 | scoped_value_mark mark; |
9c06b0b4 TJB |
10152 | mask_value = parse_to_comma_and_eval (&value_start); |
10153 | mask = value_as_address (mask_value); | |
9c06b0b4 TJB |
10154 | } |
10155 | else | |
10156 | /* We didn't recognize what we found. We should stop here. */ | |
10157 | break; | |
37e4754d | 10158 | |
9c06b0b4 TJB |
10159 | /* Truncate the string and get rid of the "parameter value" pair before |
10160 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10161 | exp_end = tok; |
9c06b0b4 | 10162 | } |
37e4754d | 10163 | } |
bbc13ae3 KS |
10164 | else |
10165 | exp_end = arg; | |
37e4754d | 10166 | |
bbc13ae3 KS |
10167 | /* Parse the rest of the arguments. From here on out, everything |
10168 | is in terms of a newly allocated string instead of the original | |
10169 | ARG. */ | |
81b1e71c TT |
10170 | std::string expression (arg, exp_end - arg); |
10171 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10172 | innermost_block_tracker tracker; |
10173 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10174 | exp_end = arg; |
fa8a61dc TT |
10175 | /* Remove trailing whitespace from the expression before saving it. |
10176 | This makes the eventual display of the expression string a bit | |
10177 | prettier. */ | |
10178 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10179 | --exp_end; | |
10180 | ||
65d79d4b | 10181 | /* Checking if the expression is not constant. */ |
4d01a485 | 10182 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10183 | { |
10184 | int len; | |
10185 | ||
10186 | len = exp_end - exp_start; | |
10187 | while (len > 0 && isspace (exp_start[len - 1])) | |
10188 | len--; | |
10189 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10190 | } | |
10191 | ||
699bd4cf | 10192 | exp_valid_block = tracker.block (); |
b926417a | 10193 | struct value *mark = value_mark (); |
850645cf | 10194 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10195 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10196 | just_location); | |
06a64a0b | 10197 | |
850645cf | 10198 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10199 | { |
5011c493 | 10200 | saved_bitpos = val_as_value->bitpos (); |
f49d5fa2 | 10201 | saved_bitsize = val_as_value->bitsize (); |
bb9d5f81 PP |
10202 | } |
10203 | ||
850645cf | 10204 | value_ref_ptr val; |
06a64a0b TT |
10205 | if (just_location) |
10206 | { | |
9c06b0b4 TJB |
10207 | int ret; |
10208 | ||
06a64a0b | 10209 | exp_valid_block = NULL; |
850645cf | 10210 | val = release_value (value_addr (result)); |
06a64a0b | 10211 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10212 | |
10213 | if (use_mask) | |
10214 | { | |
850645cf | 10215 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10216 | mask); |
10217 | if (ret == -1) | |
10218 | error (_("This target does not support masked watchpoints.")); | |
10219 | else if (ret == -2) | |
10220 | error (_("Invalid mask or memory region.")); | |
10221 | } | |
06a64a0b | 10222 | } |
850645cf TT |
10223 | else if (val_as_value != NULL) |
10224 | val = release_value (val_as_value); | |
c906108c | 10225 | |
f1735a53 TT |
10226 | tok = skip_spaces (arg); |
10227 | end_tok = skip_to_space (tok); | |
c906108c SS |
10228 | |
10229 | toklen = end_tok - tok; | |
10230 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10231 | { | |
10232 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10233 | innermost_block_tracker if_tracker; |
10234 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10235 | |
10236 | /* The watchpoint expression may not be local, but the condition | |
10237 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10238 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10239 | |
c906108c SS |
10240 | cond_end = tok; |
10241 | } | |
10242 | if (*tok) | |
8a3fe4f8 | 10243 | error (_("Junk at end of command.")); |
c906108c | 10244 | |
bd2b40ac | 10245 | frame_info_ptr wp_frame = block_innermost_frame (exp_valid_block); |
441d7c93 PA |
10246 | |
10247 | /* Save this because create_internal_breakpoint below invalidates | |
10248 | 'wp_frame'. */ | |
10249 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10250 | |
10251 | /* If the expression is "local", then set up a "watchpoint scope" | |
10252 | breakpoint at the point where we've left the scope of the watchpoint | |
10253 | expression. Create the scope breakpoint before the watchpoint, so | |
10254 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10255 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10256 | { |
441d7c93 PA |
10257 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10258 | ||
10259 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10260 | { |
441d7c93 PA |
10261 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10262 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10263 | ||
24b21115 | 10264 | scope_breakpoint |
441d7c93 | 10265 | = create_internal_breakpoint (caller_arch, caller_pc, |
9efa3c7f | 10266 | bp_watchpoint_scope); |
d983da9c | 10267 | |
441d7c93 PA |
10268 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10269 | wp_frame = NULL; | |
10270 | ||
edb3359d | 10271 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10272 | |
edb3359d DJ |
10273 | /* Automatically delete the breakpoint when it hits. */ |
10274 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10275 | |
edb3359d | 10276 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10277 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10278 | |
edb3359d | 10279 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10280 | scope_breakpoint->loc->gdbarch = caller_arch; |
10281 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10282 | scope_breakpoint->loc->address |
a6d9a66e UW |
10283 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10284 | scope_breakpoint->loc->requested_address, | |
60270718 AB |
10285 | scope_breakpoint->type, |
10286 | current_program_space); | |
edb3359d | 10287 | } |
d983da9c DJ |
10288 | } |
10289 | ||
e8369a73 AB |
10290 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10291 | watchpoints here even if hardware watchpoints are turned off, a call | |
10292 | to update_watchpoint later in this function will cause the type to | |
10293 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10294 | ||
10295 | if (accessflag == hw_read) | |
10296 | bp_type = bp_read_watchpoint; | |
10297 | else if (accessflag == hw_access) | |
10298 | bp_type = bp_access_watchpoint; | |
10299 | else | |
10300 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10301 | |
3a292923 | 10302 | std::unique_ptr<watchpoint> w; |
348d480f | 10303 | if (use_mask) |
73063f51 | 10304 | w.reset (new masked_watchpoint (nullptr, bp_type)); |
348d480f | 10305 | else |
73063f51 | 10306 | w.reset (new watchpoint (nullptr, bp_type)); |
3a292923 | 10307 | |
0a9ccb9d | 10308 | /* At most one of thread or task can be set on a watchpoint. */ |
2ecee236 | 10309 | gdb_assert (thread == -1 || task == -1); |
c1fc2657 | 10310 | w->thread = thread; |
8a18382f | 10311 | w->task = task; |
c1fc2657 SM |
10312 | w->disposition = disp_donttouch; |
10313 | w->pspace = current_program_space; | |
b22e99fd | 10314 | w->exp = std::move (exp); |
3a5c3e22 PA |
10315 | w->exp_valid_block = exp_valid_block; |
10316 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10317 | if (just_location) |
10318 | { | |
f28085df | 10319 | struct type *t = val->type (); |
850645cf | 10320 | CORE_ADDR addr = value_as_address (val.get ()); |
06a64a0b | 10321 | |
43cc5389 | 10322 | w->exp_string_reparse |
a4c50be3 | 10323 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10324 | |
8579fd13 AB |
10325 | w->exp_string = xstrprintf ("-location %.*s", |
10326 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10327 | } |
10328 | else | |
a4c50be3 | 10329 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10330 | |
10331 | if (use_mask) | |
10332 | { | |
3a5c3e22 | 10333 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10334 | } |
10335 | else | |
10336 | { | |
3a5c3e22 | 10337 | w->val = val; |
bb9d5f81 PP |
10338 | w->val_bitpos = saved_bitpos; |
10339 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10340 | w->val_valid = true; |
9c06b0b4 | 10341 | } |
77b06cd7 | 10342 | |
c906108c | 10343 | if (cond_start) |
6f781ee3 | 10344 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10345 | else |
c1fc2657 | 10346 | w->cond_string = 0; |
c5aa993b | 10347 | |
441d7c93 | 10348 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10349 | { |
441d7c93 | 10350 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10351 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10352 | } |
c906108c | 10353 | else |
f6bc2008 | 10354 | { |
3a5c3e22 PA |
10355 | w->watchpoint_frame = null_frame_id; |
10356 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10357 | } |
c906108c | 10358 | |
d983da9c | 10359 | if (scope_breakpoint != NULL) |
c906108c | 10360 | { |
d983da9c DJ |
10361 | /* The scope breakpoint is related to the watchpoint. We will |
10362 | need to act on them together. */ | |
c1fc2657 | 10363 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10364 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10365 | } |
d983da9c | 10366 | |
06a64a0b TT |
10367 | if (!just_location) |
10368 | value_free_to_mark (mark); | |
2d134ed3 | 10369 | |
b270e6f9 TT |
10370 | /* Finally update the new watchpoint. This creates the locations |
10371 | that should be inserted. */ | |
d8de7963 | 10372 | update_watchpoint (w.get (), true /* reparse */); |
a9634178 | 10373 | |
b270e6f9 | 10374 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10375 | } |
10376 | ||
e09342b5 | 10377 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10378 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10379 | |
c906108c | 10380 | static int |
a6535de1 | 10381 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10382 | { |
10383 | int found_memory_cnt = 0; | |
10384 | ||
10385 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10386 | if (!can_use_hw_watchpoints) |
c906108c | 10387 | return 0; |
c5aa993b | 10388 | |
a6535de1 TT |
10389 | gdb_assert (!vals.empty ()); |
10390 | struct value *head = vals[0].get (); | |
10391 | ||
5c44784c JM |
10392 | /* Make sure that the value of the expression depends only upon |
10393 | memory contents, and values computed from them within GDB. If we | |
10394 | find any register references or function calls, we can't use a | |
10395 | hardware watchpoint. | |
10396 | ||
10397 | The idea here is that evaluating an expression generates a series | |
10398 | of values, one holding the value of every subexpression. (The | |
10399 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10400 | a*b+c.) GDB's values hold almost enough information to establish | |
10401 | the criteria given above --- they identify memory lvalues, | |
10402 | register lvalues, computed values, etcetera. So we can evaluate | |
10403 | the expression, and then scan the chain of values that leaves | |
10404 | behind to decide whether we can detect any possible change to the | |
10405 | expression's final value using only hardware watchpoints. | |
10406 | ||
10407 | However, I don't think that the values returned by inferior | |
10408 | function calls are special in any way. So this function may not | |
10409 | notice that an expression involving an inferior function call | |
10410 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10411 | for (const value_ref_ptr &iter : vals) |
c906108c | 10412 | { |
a6535de1 TT |
10413 | struct value *v = iter.get (); |
10414 | ||
736355f2 | 10415 | if (v->lval () == lval_memory) |
c906108c | 10416 | { |
3ee3b270 | 10417 | if (v != head && v->lazy ()) |
8464be76 DJ |
10418 | /* A lazy memory lvalue in the chain is one that GDB never |
10419 | needed to fetch; we either just used its address (e.g., | |
10420 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10421 | in `a,b'). This doesn't apply to HEAD; if that is | |
10422 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10423 | ; |
53a5351d | 10424 | else |
5c44784c JM |
10425 | { |
10426 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10427 | it with hardware watchpoints. */ |
d0c97917 | 10428 | struct type *vtype = check_typedef (v->type ()); |
2e70b7b9 MS |
10429 | |
10430 | /* We only watch structs and arrays if user asked for it | |
10431 | explicitly, never if they just happen to appear in a | |
10432 | middle of some value chain. */ | |
10433 | if (v == head | |
78134374 SM |
10434 | || (vtype->code () != TYPE_CODE_STRUCT |
10435 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10436 | { |
9feb2d07 | 10437 | CORE_ADDR vaddr = v->address (); |
e09342b5 TJB |
10438 | int len; |
10439 | int num_regs; | |
10440 | ||
a9634178 | 10441 | len = (target_exact_watchpoints |
e09342b5 | 10442 | && is_scalar_type_recursive (vtype))? |
d0c97917 | 10443 | 1 : v->type ()->length (); |
2e70b7b9 | 10444 | |
e09342b5 TJB |
10445 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10446 | if (!num_regs) | |
2e70b7b9 MS |
10447 | return 0; |
10448 | else | |
e09342b5 | 10449 | found_memory_cnt += num_regs; |
2e70b7b9 | 10450 | } |
5c44784c | 10451 | } |
c5aa993b | 10452 | } |
736355f2 | 10453 | else if (v->lval () != not_lval |
4b53ca88 | 10454 | && v->deprecated_modifiable () == 0) |
38b6c3b3 | 10455 | return 0; /* These are values from the history (e.g., $1). */ |
736355f2 | 10456 | else if (v->lval () == lval_register) |
38b6c3b3 | 10457 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10458 | } |
10459 | ||
10460 | /* The expression itself looks suitable for using a hardware | |
10461 | watchpoint, but give the target machine a chance to reject it. */ | |
10462 | return found_memory_cnt; | |
10463 | } | |
10464 | ||
8b93c638 | 10465 | void |
2e362716 | 10466 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10467 | { |
84f4c1fe | 10468 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10469 | } |
10470 | ||
a15a5258 AB |
10471 | /* Options for the watch, awatch, and rwatch commands. */ |
10472 | ||
10473 | struct watch_options | |
10474 | { | |
10475 | /* For -location. */ | |
10476 | bool location = false; | |
10477 | }; | |
10478 | ||
10479 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10480 | ||
10481 | Historically GDB always accepted both '-location' and '-l' flags for | |
10482 | these commands (both flags being synonyms). When converting to the | |
10483 | newer option scheme only '-location' is added here. That's fine (for | |
10484 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10485 | accepted, so '-l', '-loc', are now all accepted. | |
10486 | ||
10487 | What this means is that, if in the future, we add any new flag here | |
10488 | that starts with '-l' then this will break backward compatibility, so | |
10489 | please, don't do that! */ | |
10490 | ||
10491 | static const gdb::option::option_def watch_option_defs[] = { | |
10492 | gdb::option::flag_option_def<watch_options> { | |
10493 | "location", | |
10494 | [] (watch_options *opt) { return &opt->location; }, | |
10495 | N_("\ | |
10496 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10497 | -l can be used as a short form of -location."), | |
10498 | }, | |
10499 | }; | |
10500 | ||
10501 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10502 | commands. */ | |
10503 | ||
10504 | static gdb::option::option_def_group | |
10505 | make_watch_options_def_group (watch_options *opts) | |
10506 | { | |
10507 | return {{watch_option_defs}, opts}; | |
10508 | } | |
10509 | ||
06a64a0b TT |
10510 | /* A helper function that looks for the "-location" argument and then |
10511 | calls watch_command_1. */ | |
10512 | ||
10513 | static void | |
0b39b52e | 10514 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10515 | { |
a15a5258 AB |
10516 | watch_options opts; |
10517 | auto grp = make_watch_options_def_group (&opts); | |
10518 | gdb::option::process_options | |
10519 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10520 | if (arg != nullptr && *arg == '\0') | |
10521 | arg = nullptr; | |
10522 | ||
10523 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10524 | } | |
06a64a0b | 10525 | |
a15a5258 AB |
10526 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10527 | static void | |
10528 | watch_command_completer (struct cmd_list_element *ignore, | |
10529 | completion_tracker &tracker, | |
10530 | const char *text, const char * /*word*/) | |
10531 | { | |
10532 | const auto group = make_watch_options_def_group (nullptr); | |
10533 | if (gdb::option::complete_options | |
10534 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10535 | return; | |
06a64a0b | 10536 | |
a15a5258 AB |
10537 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10538 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10539 | } |
8926118c | 10540 | |
c5aa993b | 10541 | static void |
0b39b52e | 10542 | watch_command (const char *arg, int from_tty) |
c906108c | 10543 | { |
06a64a0b | 10544 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10545 | } |
10546 | ||
8b93c638 | 10547 | void |
2e362716 | 10548 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10549 | { |
84f4c1fe | 10550 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10551 | } |
8926118c | 10552 | |
c5aa993b | 10553 | static void |
0b39b52e | 10554 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10555 | { |
06a64a0b | 10556 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10557 | } |
10558 | ||
8b93c638 | 10559 | void |
2e362716 | 10560 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10561 | { |
84f4c1fe | 10562 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10563 | } |
8926118c | 10564 | |
c5aa993b | 10565 | static void |
0b39b52e | 10566 | awatch_command (const char *arg, int from_tty) |
c906108c | 10567 | { |
06a64a0b | 10568 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10569 | } |
c906108c | 10570 | \f |
c5aa993b | 10571 | |
cfc31633 PA |
10572 | /* Data for the FSM that manages the until(location)/advance commands |
10573 | in infcmd.c. Here because it uses the mechanisms of | |
10574 | breakpoints. */ | |
c906108c | 10575 | |
46e3ed7f | 10576 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10577 | { |
46e3ed7f | 10578 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10579 | int thread; |
10580 | ||
df631783 PA |
10581 | /* The breakpoint set at the return address in the caller frame, |
10582 | plus breakpoints at all the destination locations. */ | |
10583 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10584 | |
46e3ed7f | 10585 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10586 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10587 | : thread_fsm (cmd_interp), |
10588 | thread (thread), | |
df631783 | 10589 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10590 | { |
10591 | } | |
cfc31633 | 10592 | |
46e3ed7f TT |
10593 | void clean_up (struct thread_info *thread) override; |
10594 | bool should_stop (struct thread_info *thread) override; | |
10595 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10596 | }; |
10597 | ||
cfc31633 PA |
10598 | /* Implementation of the 'should_stop' FSM method for the |
10599 | until(location)/advance commands. */ | |
10600 | ||
46e3ed7f TT |
10601 | bool |
10602 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10603 | { |
df631783 PA |
10604 | for (const breakpoint_up &bp : breakpoints) |
10605 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10606 | bp.get ()) != NULL) | |
10607 | { | |
10608 | set_finished (); | |
10609 | break; | |
10610 | } | |
cfc31633 | 10611 | |
46e3ed7f | 10612 | return true; |
cfc31633 PA |
10613 | } |
10614 | ||
10615 | /* Implementation of the 'clean_up' FSM method for the | |
10616 | until(location)/advance commands. */ | |
10617 | ||
46e3ed7f TT |
10618 | void |
10619 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10620 | { |
cfc31633 | 10621 | /* Clean up our temporary breakpoints. */ |
df631783 | 10622 | breakpoints.clear (); |
46e3ed7f | 10623 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10624 | } |
10625 | ||
10626 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10627 | until(location)/advance commands. */ | |
10628 | ||
46e3ed7f TT |
10629 | enum async_reply_reason |
10630 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10631 | { |
10632 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10633 | } |
10634 | ||
c906108c | 10635 | void |
f2fc3015 | 10636 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10637 | { |
bd2b40ac | 10638 | frame_info_ptr frame; |
8556afb4 PA |
10639 | struct gdbarch *frame_gdbarch; |
10640 | struct frame_id stack_frame_id; | |
10641 | struct frame_id caller_frame_id; | |
186c406b TT |
10642 | int thread; |
10643 | struct thread_info *tp; | |
c906108c | 10644 | |
70509625 | 10645 | clear_proceed_status (0); |
c906108c SS |
10646 | |
10647 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10648 | this function. */ |
c5aa993b | 10649 | |
264f9890 | 10650 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f | 10651 | |
6c5b2ebe PA |
10652 | std::vector<symtab_and_line> sals |
10653 | = (last_displayed_sal_is_valid () | |
264f9890 | 10654 | ? decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, |
6c5b2ebe PA |
10655 | get_last_displayed_symtab (), |
10656 | get_last_displayed_line ()) | |
264f9890 | 10657 | : decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, |
cafb3438 | 10658 | NULL, NULL, 0)); |
c5aa993b | 10659 | |
df631783 | 10660 | if (sals.empty ()) |
8a3fe4f8 | 10661 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10662 | |
c906108c | 10663 | if (*arg) |
8a3fe4f8 | 10664 | error (_("Junk at end of arguments.")); |
c5aa993b | 10665 | |
186c406b | 10666 | tp = inferior_thread (); |
5d5658a1 | 10667 | thread = tp->global_num; |
186c406b | 10668 | |
8556afb4 PA |
10669 | /* Note linespec handling above invalidates the frame chain. |
10670 | Installing a breakpoint also invalidates the frame chain (as it | |
10671 | may need to switch threads), so do any frame handling before | |
10672 | that. */ | |
10673 | ||
10674 | frame = get_selected_frame (NULL); | |
10675 | frame_gdbarch = get_frame_arch (frame); | |
10676 | stack_frame_id = get_stack_frame_id (frame); | |
10677 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10678 | |
ae66c1fc EZ |
10679 | /* Keep within the current frame, or in frames called by the current |
10680 | one. */ | |
edb3359d | 10681 | |
df631783 | 10682 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10683 | |
10684 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10685 | ||
883bc8d1 | 10686 | if (frame_id_p (caller_frame_id)) |
c906108c | 10687 | { |
883bc8d1 | 10688 | struct symtab_and_line sal2; |
cfc31633 | 10689 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10690 | |
10691 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10692 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10693 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10694 | |
10695 | breakpoint_up caller_breakpoint | |
10696 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10697 | caller_frame_id, bp_until); | |
10698 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10699 | |
0f443d1b | 10700 | set_longjmp_breakpoint (tp, stack_frame_id); |
5419bdae | 10701 | lj_deleter.emplace (thread); |
c906108c | 10702 | } |
c5aa993b | 10703 | |
c70a6932 JK |
10704 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10705 | frame = NULL; | |
10706 | ||
df631783 PA |
10707 | /* If the user told us to continue until a specified location, we |
10708 | don't specify a frame at which we need to stop. Otherwise, | |
10709 | specify the selected frame, because we want to stop only at the | |
10710 | very same frame. */ | |
10711 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10712 | ||
10713 | for (symtab_and_line &sal : sals) | |
10714 | { | |
10715 | resolve_sal_pc (&sal); | |
10716 | ||
10717 | breakpoint_up location_breakpoint | |
10718 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10719 | stop_frame_id, bp_until); | |
10720 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10721 | } | |
883bc8d1 | 10722 | |
573269a8 LS |
10723 | tp->set_thread_fsm |
10724 | (std::unique_ptr<thread_fsm> | |
10725 | (new until_break_fsm (command_interp (), tp->global_num, | |
10726 | std::move (breakpoints)))); | |
f107f563 | 10727 | |
5419bdae TT |
10728 | if (lj_deleter) |
10729 | lj_deleter->release (); | |
f107f563 | 10730 | |
cfc31633 | 10731 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10732 | } |
ae66c1fc | 10733 | |
c906108c SS |
10734 | \f |
10735 | ||
81b1e71c | 10736 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10737 | |
10738 | static int | |
81b1e71c | 10739 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10740 | { |
81b1e71c TT |
10741 | uintptr_t ua = (uintptr_t) a; |
10742 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10743 | |
81b1e71c | 10744 | if (a->number < b->number) |
8a2c437b | 10745 | return -1; |
81b1e71c | 10746 | else if (a->number > b->number) |
8a2c437b TT |
10747 | return 1; |
10748 | ||
10749 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10750 | the number 0. */ | |
10751 | if (ua < ub) | |
10752 | return -1; | |
94b0e70d | 10753 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10754 | } |
10755 | ||
80f8a6eb | 10756 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10757 | |
10758 | static void | |
0b39b52e | 10759 | clear_command (const char *arg, int from_tty) |
c906108c | 10760 | { |
c906108c | 10761 | int default_match; |
c906108c | 10762 | |
6c5b2ebe PA |
10763 | std::vector<symtab_and_line> decoded_sals; |
10764 | symtab_and_line last_sal; | |
10765 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10766 | if (arg) |
10767 | { | |
6c5b2ebe PA |
10768 | decoded_sals |
10769 | = decode_line_with_current_source (arg, | |
10770 | (DECODE_LINE_FUNFIRSTLINE | |
10771 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10772 | default_match = 0; |
6c5b2ebe | 10773 | sals = decoded_sals; |
c906108c SS |
10774 | } |
10775 | else | |
10776 | { | |
1bfeeb0f JL |
10777 | /* Set sal's line, symtab, pc, and pspace to the values |
10778 | corresponding to the last call to print_frame_info. If the | |
10779 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10780 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10781 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10782 | error (_("No source file specified.")); |
c906108c | 10783 | |
c906108c | 10784 | default_match = 1; |
6c5b2ebe | 10785 | sals = last_sal; |
c906108c SS |
10786 | } |
10787 | ||
4a64f543 MS |
10788 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10789 | seems, because all existing breakpoints typically have both | |
10790 | file/line and pc set. So, if clear is given file/line, we can | |
10791 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10792 | |
10793 | We only support clearing given the address explicitly | |
10794 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10795 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10796 | due to optimization, all in one block. |
4a64f543 MS |
10797 | |
10798 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10799 | PC corresponding to the same file:line, the breakpoint won't |
10800 | be cleared. We probably can still clear the breakpoint, but | |
10801 | since the other PC value is never presented to user, user | |
10802 | can only find it by guessing, and it does not seem important | |
10803 | to support that. */ | |
10804 | ||
4a64f543 MS |
10805 | /* For each line spec given, delete bps which correspond to it. Do |
10806 | it in two passes, solely to preserve the current behavior that | |
10807 | from_tty is forced true if we delete more than one | |
10808 | breakpoint. */ | |
c906108c | 10809 | |
81b1e71c | 10810 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10811 | for (const auto &sal : sals) |
c906108c | 10812 | { |
05cba821 JK |
10813 | const char *sal_fullname; |
10814 | ||
c906108c | 10815 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10816 | If line given (pc == 0), clear all bpts on specified line. |
10817 | If defaulting, clear all bpts on default line | |
10818 | or at default pc. | |
c5aa993b | 10819 | |
dda83cd7 | 10820 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10821 | |
dda83cd7 SM |
10822 | 0 1 pc |
10823 | 1 1 pc _and_ line | |
10824 | 0 0 line | |
10825 | 1 0 <can't happen> */ | |
c906108c | 10826 | |
05cba821 JK |
10827 | sal_fullname = (sal.symtab == NULL |
10828 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10829 | |
4a64f543 | 10830 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10831 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10832 | { |
0d381245 | 10833 | int match = 0; |
4a64f543 | 10834 | /* Are we going to delete b? */ |
a5c69b1e EL |
10835 | if (b->type != bp_none && !is_watchpoint (b) |
10836 | && user_breakpoint_p (b)) | |
0d381245 | 10837 | { |
40cb8ca5 | 10838 | for (bp_location *loc : b->locations ()) |
0d381245 | 10839 | { |
f8eba3c6 TT |
10840 | /* If the user specified file:line, don't allow a PC |
10841 | match. This matches historical gdb behavior. */ | |
10842 | int pc_match = (!sal.explicit_line | |
10843 | && sal.pc | |
10844 | && (loc->pspace == sal.pspace) | |
10845 | && (loc->address == sal.pc) | |
10846 | && (!section_is_overlay (loc->section) | |
10847 | || loc->section == sal.section)); | |
4aac40c8 TT |
10848 | int line_match = 0; |
10849 | ||
10850 | if ((default_match || sal.explicit_line) | |
2f202fde | 10851 | && loc->symtab != NULL |
05cba821 | 10852 | && sal_fullname != NULL |
4aac40c8 | 10853 | && sal.pspace == loc->pspace |
05cba821 JK |
10854 | && loc->line_number == sal.line |
10855 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10856 | sal_fullname) == 0) | |
10857 | line_match = 1; | |
4aac40c8 | 10858 | |
0d381245 VP |
10859 | if (pc_match || line_match) |
10860 | { | |
10861 | match = 1; | |
10862 | break; | |
10863 | } | |
10864 | } | |
10865 | } | |
10866 | ||
10867 | if (match) | |
81b1e71c | 10868 | found.push_back (b); |
c906108c | 10869 | } |
80f8a6eb | 10870 | } |
8a2c437b | 10871 | |
80f8a6eb | 10872 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10873 | if (found.empty ()) |
80f8a6eb MS |
10874 | { |
10875 | if (arg) | |
8a3fe4f8 | 10876 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10877 | else |
8a3fe4f8 | 10878 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10879 | } |
c906108c | 10880 | |
8a2c437b | 10881 | /* Remove duplicates from the vec. */ |
81b1e71c | 10882 | std::sort (found.begin (), found.end (), |
b926417a | 10883 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10884 | { |
b926417a | 10885 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10886 | }); |
10887 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10888 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10889 | { |
b926417a | 10890 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10891 | }), |
10892 | found.end ()); | |
8a2c437b | 10893 | |
81b1e71c | 10894 | if (found.size () > 1) |
4a64f543 | 10895 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10896 | if (from_tty) |
a3f17187 | 10897 | { |
81b1e71c | 10898 | if (found.size () == 1) |
6cb06a8c | 10899 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10900 | else |
6cb06a8c | 10901 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10902 | } |
d6e956e5 | 10903 | |
81b1e71c | 10904 | for (breakpoint *iter : found) |
80f8a6eb | 10905 | { |
c5aa993b | 10906 | if (from_tty) |
6cb06a8c | 10907 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10908 | delete_breakpoint (iter); |
c906108c | 10909 | } |
80f8a6eb | 10910 | if (from_tty) |
a11ac3b3 | 10911 | gdb_putc ('\n'); |
c906108c SS |
10912 | } |
10913 | \f | |
10914 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10915 | all breakpoints that are marked for deletion, whether hit or not. | |
10916 | This is called after any breakpoint is hit, or after errors. */ | |
10917 | ||
10918 | void | |
313f3b21 | 10919 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10920 | { |
c906108c | 10921 | for (; bs; bs = bs->next) |
f431efe5 PA |
10922 | if (bs->breakpoint_at |
10923 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10924 | && bs->stop) |
f431efe5 | 10925 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10926 | |
1428b37a | 10927 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10928 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10929 | delete_breakpoint (b); |
c906108c SS |
10930 | } |
10931 | ||
4a64f543 | 10932 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10933 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10934 | bl_address_is_meaningful says), secondarily by ordering first |
10935 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10936 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10937 | |
10938 | static int | |
39ef2f62 | 10939 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10940 | { |
876fa593 | 10941 | if (a->address != b->address) |
39ef2f62 | 10942 | return a->address < b->address; |
876fa593 | 10943 | |
dea2aa5f LM |
10944 | /* Sort locations at the same address by their pspace number, keeping |
10945 | locations of the same inferior (in a multi-inferior environment) | |
10946 | grouped. */ | |
10947 | ||
10948 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10949 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10950 | |
876fa593 | 10951 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10952 | if (a->permanent != b->permanent) |
39ef2f62 | 10953 | return a->permanent > b->permanent; |
876fa593 | 10954 | |
7f32a4d5 PA |
10955 | /* Sort by type in order to make duplicate determination easier. |
10956 | See update_global_location_list. This is kept in sync with | |
10957 | breakpoint_locations_match. */ | |
10958 | if (a->loc_type < b->loc_type) | |
10959 | return true; | |
10960 | ||
10961 | /* Likewise, for range-breakpoints, sort by length. */ | |
10962 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10963 | && b->loc_type == bp_loc_hardware_breakpoint | |
10964 | && a->length < b->length) | |
10965 | return true; | |
10966 | ||
c56a97f9 JK |
10967 | /* Make the internal GDB representation stable across GDB runs |
10968 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10969 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10970 | |
10971 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 10972 | return a->owner->number < b->owner->number; |
876fa593 | 10973 | |
39ef2f62 | 10974 | return a < b; |
876fa593 JK |
10975 | } |
10976 | ||
f5336ca5 PA |
10977 | /* Set bp_locations_placed_address_before_address_max and |
10978 | bp_locations_shadow_len_after_address_max according to the current | |
10979 | content of the bp_locations array. */ | |
f7545552 TT |
10980 | |
10981 | static void | |
f5336ca5 | 10982 | bp_locations_target_extensions_update (void) |
f7545552 | 10983 | { |
f5336ca5 PA |
10984 | bp_locations_placed_address_before_address_max = 0; |
10985 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 10986 | |
48d7020b | 10987 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
10988 | { |
10989 | CORE_ADDR start, end, addr; | |
10990 | ||
10991 | if (!bp_location_has_shadow (bl)) | |
10992 | continue; | |
10993 | ||
10994 | start = bl->target_info.placed_address; | |
10995 | end = start + bl->target_info.shadow_len; | |
10996 | ||
10997 | gdb_assert (bl->address >= start); | |
10998 | addr = bl->address - start; | |
f5336ca5 PA |
10999 | if (addr > bp_locations_placed_address_before_address_max) |
11000 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11001 | |
11002 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11003 | ||
11004 | gdb_assert (bl->address < end); | |
11005 | addr = end - bl->address; | |
f5336ca5 PA |
11006 | if (addr > bp_locations_shadow_len_after_address_max) |
11007 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11008 | } |
f7545552 TT |
11009 | } |
11010 | ||
1e4d1764 YQ |
11011 | /* Download tracepoint locations if they haven't been. */ |
11012 | ||
11013 | static void | |
11014 | download_tracepoint_locations (void) | |
11015 | { | |
dd2e65cc | 11016 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11017 | |
5ed8105e | 11018 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11019 | |
f6d17b2b | 11020 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
11021 | { |
11022 | struct tracepoint *t; | |
d8de7963 | 11023 | bool bp_location_downloaded = false; |
1e4d1764 | 11024 | |
7ed2c994 | 11025 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11026 | ? !may_insert_fast_tracepoints |
11027 | : !may_insert_tracepoints)) | |
11028 | continue; | |
11029 | ||
dd2e65cc YQ |
11030 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11031 | { | |
11032 | if (target_can_download_tracepoint ()) | |
11033 | can_download_tracepoint = TRIBOOL_TRUE; | |
11034 | else | |
11035 | can_download_tracepoint = TRIBOOL_FALSE; | |
11036 | } | |
11037 | ||
11038 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11039 | break; | |
11040 | ||
40cb8ca5 | 11041 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
11042 | { |
11043 | /* In tracepoint, locations are _never_ duplicated, so | |
11044 | should_be_inserted is equivalent to | |
11045 | unduplicated_should_be_inserted. */ | |
11046 | if (!should_be_inserted (bl) || bl->inserted) | |
11047 | continue; | |
1e4d1764 | 11048 | |
7ed2c994 | 11049 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11050 | |
7ed2c994 | 11051 | target_download_tracepoint (bl); |
1e4d1764 | 11052 | |
7ed2c994 | 11053 | bl->inserted = 1; |
d8de7963 | 11054 | bp_location_downloaded = true; |
7ed2c994 YQ |
11055 | } |
11056 | t = (struct tracepoint *) b; | |
11057 | t->number_on_target = b->number; | |
f2a8bc8a | 11058 | if (bp_location_downloaded) |
76727919 | 11059 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11060 | } |
1e4d1764 YQ |
11061 | } |
11062 | ||
934709f0 PW |
11063 | /* Swap the insertion/duplication state between two locations. */ |
11064 | ||
11065 | static void | |
11066 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11067 | { | |
11068 | const int left_inserted = left->inserted; | |
11069 | const int left_duplicate = left->duplicate; | |
b775012e | 11070 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11071 | const struct bp_target_info left_target_info = left->target_info; |
11072 | ||
1e4d1764 YQ |
11073 | /* Locations of tracepoints can never be duplicated. */ |
11074 | if (is_tracepoint (left->owner)) | |
11075 | gdb_assert (!left->duplicate); | |
11076 | if (is_tracepoint (right->owner)) | |
11077 | gdb_assert (!right->duplicate); | |
11078 | ||
934709f0 PW |
11079 | left->inserted = right->inserted; |
11080 | left->duplicate = right->duplicate; | |
b775012e | 11081 | left->needs_update = right->needs_update; |
934709f0 PW |
11082 | left->target_info = right->target_info; |
11083 | right->inserted = left_inserted; | |
11084 | right->duplicate = left_duplicate; | |
b775012e | 11085 | right->needs_update = left_needs_update; |
934709f0 PW |
11086 | right->target_info = left_target_info; |
11087 | } | |
11088 | ||
b775012e LM |
11089 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11090 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11091 | conditions on the target's side. Such conditions need to be updated on | |
11092 | the target. */ | |
11093 | ||
11094 | static void | |
11095 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11096 | { | |
b775012e LM |
11097 | CORE_ADDR address = 0; |
11098 | int pspace_num; | |
11099 | ||
11100 | address = bl->address; | |
11101 | pspace_num = bl->pspace->num; | |
11102 | ||
11103 | /* This is only meaningful if the target is | |
11104 | evaluating conditions and if the user has | |
11105 | opted for condition evaluation on the target's | |
11106 | side. */ | |
11107 | if (gdb_evaluates_breakpoint_condition_p () | |
11108 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11109 | return; | |
11110 | ||
11111 | /* Flag all breakpoint locations with this address and | |
11112 | the same program space as the location | |
11113 | as "its condition has changed". We need to | |
11114 | update the conditions on the target's side. */ | |
e0d9a270 | 11115 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11116 | { |
b775012e LM |
11117 | if (!is_breakpoint (loc->owner) |
11118 | || pspace_num != loc->pspace->num) | |
11119 | continue; | |
11120 | ||
11121 | /* Flag the location appropriately. We use a different state to | |
11122 | let everyone know that we already updated the set of locations | |
11123 | with addr bl->address and program space bl->pspace. This is so | |
11124 | we don't have to keep calling these functions just to mark locations | |
11125 | that have already been marked. */ | |
11126 | loc->condition_changed = condition_updated; | |
11127 | ||
11128 | /* Free the agent expression bytecode as well. We will compute | |
11129 | it later on. */ | |
833177a4 | 11130 | loc->cond_bytecode.reset (); |
b775012e LM |
11131 | } |
11132 | } | |
7f32a4d5 | 11133 | |
44702360 PA |
11134 | /* Called whether new breakpoints are created, or existing breakpoints |
11135 | deleted, to update the global location list and recompute which | |
11136 | locations are duplicate of which. | |
b775012e | 11137 | |
04086b45 PA |
11138 | The INSERT_MODE flag determines whether locations may not, may, or |
11139 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11140 | info. */ | |
b60e7edf | 11141 | |
0d381245 | 11142 | static void |
44702360 | 11143 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11144 | { |
b775012e LM |
11145 | /* Last breakpoint location address that was marked for update. */ |
11146 | CORE_ADDR last_addr = 0; | |
11147 | /* Last breakpoint location program space that was marked for update. */ | |
11148 | int last_pspace_num = -1; | |
f7545552 | 11149 | |
2d134ed3 PA |
11150 | /* Used in the duplicates detection below. When iterating over all |
11151 | bp_locations, points to the first bp_location of a given address. | |
11152 | Breakpoints and watchpoints of different types are never | |
11153 | duplicates of each other. Keep one pointer for each type of | |
11154 | breakpoint/watchpoint, so we only need to loop over all locations | |
11155 | once. */ | |
11156 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11157 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11158 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11159 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11160 | |
f5336ca5 PA |
11161 | /* Saved former bp_locations array which we compare against the newly |
11162 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11163 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11164 | bp_locations.clear (); | |
876fa593 | 11165 | |
43892fdf | 11166 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11167 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11168 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11169 | |
11170 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11171 | breakpoint. Do this before deciding whether locations are | |
11172 | duplicates. Also do this before sorting because sorting order | |
11173 | depends on location type. */ | |
5d51cd5d SM |
11174 | for (bp_location *loc : bp_locations) |
11175 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11176 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11177 | |
5d51cd5d | 11178 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11179 | bp_location_is_less_than); |
876fa593 | 11180 | |
f5336ca5 | 11181 | bp_locations_target_extensions_update (); |
74960c60 | 11182 | |
4a64f543 MS |
11183 | /* Identify bp_location instances that are no longer present in the |
11184 | new list, and therefore should be freed. Note that it's not | |
11185 | necessary that those locations should be removed from inferior -- | |
11186 | if there's another location at the same address (previously | |
11187 | marked as duplicate), we don't need to remove/insert the | |
11188 | location. | |
876fa593 | 11189 | |
4a64f543 MS |
11190 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11191 | and former bp_location array state respectively. */ | |
876fa593 | 11192 | |
5d51cd5d SM |
11193 | size_t loc_i = 0; |
11194 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11195 | { |
e5dd4106 | 11196 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11197 | not, we have to free it. */ |
d8de7963 | 11198 | bool found_object = false; |
20874c92 | 11199 | /* Tells if the location should remain inserted in the target. */ |
d8de7963 AB |
11200 | bool keep_in_target = false; |
11201 | bool removed = false; | |
876fa593 | 11202 | |
4a64f543 MS |
11203 | /* Skip LOCP entries which will definitely never be needed. |
11204 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11205 | while (loc_i < bp_locations.size () |
11206 | && bp_locations[loc_i]->address < old_loc->address) | |
11207 | loc_i++; | |
c7d46a38 | 11208 | |
5d51cd5d SM |
11209 | for (size_t loc2_i = loc_i; |
11210 | (loc2_i < bp_locations.size () | |
11211 | && bp_locations[loc2_i]->address == old_loc->address); | |
11212 | loc2_i++) | |
c7d46a38 | 11213 | { |
b775012e LM |
11214 | /* Check if this is a new/duplicated location or a duplicated |
11215 | location that had its condition modified. If so, we want to send | |
11216 | its condition to the target if evaluation of conditions is taking | |
11217 | place there. */ | |
5d51cd5d | 11218 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11219 | && (last_addr != old_loc->address |
11220 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11221 | { |
5d51cd5d | 11222 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11223 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11224 | } |
b775012e | 11225 | |
5d51cd5d | 11226 | if (bp_locations[loc2_i] == old_loc) |
d8de7963 | 11227 | found_object = true; |
c7d46a38 | 11228 | } |
74960c60 | 11229 | |
b775012e LM |
11230 | /* We have already handled this address, update it so that we don't |
11231 | have to go through updates again. */ | |
11232 | last_addr = old_loc->address; | |
11233 | ||
11234 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11235 | if (!found_object) | |
11236 | force_breakpoint_reinsertion (old_loc); | |
11237 | ||
4a64f543 MS |
11238 | /* If this location is no longer present, and inserted, look if |
11239 | there's maybe a new location at the same address. If so, | |
11240 | mark that one inserted, and don't remove this one. This is | |
11241 | needed so that we don't have a time window where a breakpoint | |
11242 | at certain location is not inserted. */ | |
74960c60 | 11243 | |
876fa593 | 11244 | if (old_loc->inserted) |
0d381245 | 11245 | { |
4a64f543 MS |
11246 | /* If the location is inserted now, we might have to remove |
11247 | it. */ | |
74960c60 | 11248 | |
876fa593 | 11249 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11250 | { |
4a64f543 MS |
11251 | /* The location is still present in the location list, |
11252 | and still should be inserted. Don't do anything. */ | |
d8de7963 | 11253 | keep_in_target = true; |
74960c60 VP |
11254 | } |
11255 | else | |
11256 | { | |
b775012e LM |
11257 | /* This location still exists, but it won't be kept in the |
11258 | target since it may have been disabled. We proceed to | |
11259 | remove its target-side condition. */ | |
11260 | ||
4a64f543 MS |
11261 | /* The location is either no longer present, or got |
11262 | disabled. See if there's another location at the | |
11263 | same address, in which case we don't need to remove | |
11264 | this one from the target. */ | |
876fa593 | 11265 | |
2bdf28a0 | 11266 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11267 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11268 | { |
5d51cd5d SM |
11269 | for (size_t loc2_i = loc_i; |
11270 | (loc2_i < bp_locations.size () | |
11271 | && bp_locations[loc2_i]->address == old_loc->address); | |
11272 | loc2_i++) | |
876fa593 | 11273 | { |
5d51cd5d | 11274 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11275 | |
7f32a4d5 PA |
11276 | if (loc2 == old_loc) |
11277 | continue; | |
11278 | ||
2d134ed3 | 11279 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11280 | { |
85d721b8 PA |
11281 | /* Read watchpoint locations are switched to |
11282 | access watchpoints, if the former are not | |
11283 | supported, but the latter are. */ | |
11284 | if (is_hardware_watchpoint (old_loc->owner)) | |
11285 | { | |
11286 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11287 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11288 | } | |
11289 | ||
934709f0 PW |
11290 | /* loc2 is a duplicated location. We need to check |
11291 | if it should be inserted in case it will be | |
11292 | unduplicated. */ | |
7f32a4d5 | 11293 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11294 | { |
934709f0 | 11295 | swap_insertion (old_loc, loc2); |
d8de7963 | 11296 | keep_in_target = true; |
c7d46a38 PA |
11297 | break; |
11298 | } | |
876fa593 JK |
11299 | } |
11300 | } | |
11301 | } | |
74960c60 VP |
11302 | } |
11303 | ||
20874c92 VP |
11304 | if (!keep_in_target) |
11305 | { | |
834c0d03 | 11306 | if (remove_breakpoint (old_loc)) |
20874c92 | 11307 | { |
4a64f543 MS |
11308 | /* This is just about all we can do. We could keep |
11309 | this location on the global list, and try to | |
11310 | remove it next time, but there's no particular | |
11311 | reason why we will succeed next time. | |
20874c92 | 11312 | |
4a64f543 MS |
11313 | Note that at this point, old_loc->owner is still |
11314 | valid, as delete_breakpoint frees the breakpoint | |
11315 | only after calling us. */ | |
6cb06a8c TT |
11316 | gdb_printf (_("warning: Error removing " |
11317 | "breakpoint %d\n"), | |
11318 | old_loc->owner->number); | |
20874c92 | 11319 | } |
d8de7963 | 11320 | removed = true; |
20874c92 | 11321 | } |
0d381245 | 11322 | } |
74960c60 VP |
11323 | |
11324 | if (!found_object) | |
1c5cfe86 | 11325 | { |
fbea99ea | 11326 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11327 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11328 | { |
db82e815 PA |
11329 | /* This location was removed from the target. In |
11330 | non-stop mode, a race condition is possible where | |
11331 | we've removed a breakpoint, but stop events for that | |
11332 | breakpoint are already queued and will arrive later. | |
11333 | We apply an heuristic to be able to distinguish such | |
11334 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11335 | breakpoint location for a bit, and will retire it | |
11336 | after we see some number of events. The theory here | |
11337 | is that reporting of events should, "on the average", | |
11338 | be fair, so after a while we'll see events from all | |
11339 | threads that have anything of interest, and no longer | |
11340 | need to keep this breakpoint location around. We | |
11341 | don't hold locations forever so to reduce chances of | |
11342 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11343 | SIGTRAP. | |
11344 | ||
11345 | The heuristic failing can be disastrous on | |
11346 | decr_pc_after_break targets. | |
11347 | ||
11348 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11349 | if we fail to recognize a late breakpoint SIGTRAP, | |
11350 | because events_till_retirement has reached 0 too | |
11351 | soon, we'll fail to do the PC adjustment, and report | |
11352 | a random SIGTRAP to the user. When the user resumes | |
11353 | the inferior, it will most likely immediately crash | |
2dec564e | 11354 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11355 | corrupted, because of being resumed e.g., in the |
11356 | middle of a multi-byte instruction, or skipped a | |
11357 | one-byte instruction. This was actually seen happen | |
11358 | on native x86-linux, and should be less rare on | |
11359 | targets that do not support new thread events, like | |
11360 | remote, due to the heuristic depending on | |
11361 | thread_count. | |
11362 | ||
11363 | Mistaking a random SIGTRAP for a breakpoint trap | |
11364 | causes similar symptoms (PC adjustment applied when | |
11365 | it shouldn't), but then again, playing with SIGTRAPs | |
11366 | behind the debugger's back is asking for trouble. | |
11367 | ||
11368 | Since hardware watchpoint traps are always | |
11369 | distinguishable from other traps, so we don't need to | |
11370 | apply keep hardware watchpoint moribund locations | |
11371 | around. We simply always ignore hardware watchpoint | |
11372 | traps we can no longer explain. */ | |
11373 | ||
5b6d1e4f PA |
11374 | process_stratum_target *proc_target = nullptr; |
11375 | for (inferior *inf : all_inferiors ()) | |
11376 | if (inf->pspace == old_loc->pspace) | |
11377 | { | |
11378 | proc_target = inf->process_target (); | |
11379 | break; | |
11380 | } | |
11381 | if (proc_target != nullptr) | |
11382 | old_loc->events_till_retirement | |
11383 | = 3 * (thread_count (proc_target) + 1); | |
11384 | else | |
11385 | old_loc->events_till_retirement = 1; | |
876fa593 | 11386 | old_loc->owner = NULL; |
20874c92 | 11387 | |
1123588c | 11388 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11389 | } |
11390 | else | |
f431efe5 PA |
11391 | { |
11392 | old_loc->owner = NULL; | |
11393 | decref_bp_location (&old_loc); | |
11394 | } | |
20874c92 | 11395 | } |
74960c60 | 11396 | } |
1c5cfe86 | 11397 | |
348d480f PA |
11398 | /* Rescan breakpoints at the same address and section, marking the |
11399 | first one as "first" and any others as "duplicates". This is so | |
11400 | that the bpt instruction is only inserted once. If we have a | |
11401 | permanent breakpoint at the same place as BPT, make that one the | |
11402 | official one, and the rest as duplicates. Permanent breakpoints | |
11403 | are sorted first for the same address. | |
11404 | ||
11405 | Do the same for hardware watchpoints, but also considering the | |
11406 | watchpoint's type (regular/access/read) and length. */ | |
11407 | ||
11408 | bp_loc_first = NULL; | |
11409 | wp_loc_first = NULL; | |
11410 | awp_loc_first = NULL; | |
11411 | rwp_loc_first = NULL; | |
40cb8ca5 | 11412 | |
48d7020b | 11413 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11414 | { |
11415 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11416 | non-NULL. */ | |
348d480f | 11417 | struct bp_location **loc_first_p; |
43892fdf | 11418 | breakpoint *b = loc->owner; |
348d480f | 11419 | |
6f380991 | 11420 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11421 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11422 | /* Don't detect duplicate for tracepoint locations because they are |
11423 | never duplicated. See the comments in field `duplicate' of | |
11424 | `struct bp_location'. */ | |
348d480f | 11425 | || is_tracepoint (b)) |
b775012e LM |
11426 | { |
11427 | /* Clear the condition modification flag. */ | |
11428 | loc->condition_changed = condition_unchanged; | |
11429 | continue; | |
11430 | } | |
348d480f | 11431 | |
348d480f PA |
11432 | if (b->type == bp_hardware_watchpoint) |
11433 | loc_first_p = &wp_loc_first; | |
11434 | else if (b->type == bp_read_watchpoint) | |
11435 | loc_first_p = &rwp_loc_first; | |
11436 | else if (b->type == bp_access_watchpoint) | |
11437 | loc_first_p = &awp_loc_first; | |
11438 | else | |
11439 | loc_first_p = &bp_loc_first; | |
11440 | ||
11441 | if (*loc_first_p == NULL | |
11442 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11443 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11444 | { | |
11445 | *loc_first_p = loc; | |
11446 | loc->duplicate = 0; | |
b775012e LM |
11447 | |
11448 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11449 | { | |
11450 | loc->needs_update = 1; | |
11451 | /* Clear the condition modification flag. */ | |
11452 | loc->condition_changed = condition_unchanged; | |
11453 | } | |
348d480f PA |
11454 | continue; |
11455 | } | |
11456 | ||
934709f0 PW |
11457 | |
11458 | /* This and the above ensure the invariant that the first location | |
11459 | is not duplicated, and is the inserted one. | |
11460 | All following are marked as duplicated, and are not inserted. */ | |
11461 | if (loc->inserted) | |
11462 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11463 | loc->duplicate = 1; |
11464 | ||
b775012e LM |
11465 | /* Clear the condition modification flag. */ |
11466 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11467 | } |
11468 | ||
a25a5a45 | 11469 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11470 | { |
04086b45 | 11471 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11472 | insert_breakpoint_locations (); |
11473 | else | |
11474 | { | |
44702360 PA |
11475 | /* Even though the caller told us to not insert new |
11476 | locations, we may still need to update conditions on the | |
11477 | target's side of breakpoints that were already inserted | |
11478 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11479 | only update conditions for locations that are marked |
11480 | "needs_update". */ | |
11481 | update_inserted_breakpoint_locations (); | |
11482 | } | |
11483 | } | |
348d480f | 11484 | |
04086b45 | 11485 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11486 | download_tracepoint_locations (); |
348d480f PA |
11487 | } |
11488 | ||
11489 | void | |
11490 | breakpoint_retire_moribund (void) | |
11491 | { | |
1123588c TT |
11492 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11493 | { | |
11494 | struct bp_location *loc = moribund_locations[ix]; | |
11495 | if (--(loc->events_till_retirement) == 0) | |
11496 | { | |
11497 | decref_bp_location (&loc); | |
11498 | unordered_remove (moribund_locations, ix); | |
11499 | --ix; | |
11500 | } | |
11501 | } | |
348d480f PA |
11502 | } |
11503 | ||
11504 | static void | |
44702360 | 11505 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11506 | { |
348d480f | 11507 | |
a70b8144 | 11508 | try |
492d29ea PA |
11509 | { |
11510 | update_global_location_list (insert_mode); | |
11511 | } | |
230d2906 | 11512 | catch (const gdb_exception_error &e) |
492d29ea PA |
11513 | { |
11514 | } | |
348d480f PA |
11515 | } |
11516 | ||
11517 | /* Clear BKP from a BPS. */ | |
11518 | ||
11519 | static void | |
313f3b21 | 11520 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11521 | { |
313f3b21 | 11522 | bpstat *bs; |
348d480f PA |
11523 | |
11524 | for (bs = bps; bs; bs = bs->next) | |
11525 | if (bs->breakpoint_at == bpt) | |
11526 | { | |
11527 | bs->breakpoint_at = NULL; | |
11528 | bs->old_val = NULL; | |
11529 | /* bs->commands will be freed later. */ | |
11530 | } | |
11531 | } | |
11532 | ||
11533 | /* Callback for iterate_over_threads. */ | |
11534 | static int | |
11535 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11536 | { | |
9a3c8263 | 11537 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11538 | |
11539 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11540 | return 0; | |
11541 | } | |
11542 | ||
7987c463 | 11543 | /* See breakpoint.h. */ |
348d480f | 11544 | |
7987c463 TT |
11545 | void |
11546 | code_breakpoint::say_where () const | |
348d480f PA |
11547 | { |
11548 | struct value_print_options opts; | |
11549 | ||
11550 | get_user_print_options (&opts); | |
11551 | ||
11552 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11553 | single string. */ | |
7987c463 | 11554 | if (loc == NULL) |
348d480f | 11555 | { |
f00aae0f | 11556 | /* For pending locations, the output differs slightly based |
7987c463 | 11557 | on extra_string. If this is non-NULL, it contains either |
f00aae0f | 11558 | a condition or dprintf arguments. */ |
7987c463 | 11559 | if (extra_string == NULL) |
f00aae0f | 11560 | { |
7987c463 | 11561 | gdb_printf (_(" (%s) pending."), locspec->to_string ()); |
f00aae0f | 11562 | } |
7987c463 | 11563 | else if (type == bp_dprintf) |
f00aae0f | 11564 | { |
6cb06a8c | 11565 | gdb_printf (_(" (%s,%s) pending."), |
7987c463 TT |
11566 | locspec->to_string (), |
11567 | extra_string.get ()); | |
f00aae0f KS |
11568 | } |
11569 | else | |
11570 | { | |
6cb06a8c | 11571 | gdb_printf (_(" (%s %s) pending."), |
7987c463 TT |
11572 | locspec->to_string (), |
11573 | extra_string.get ()); | |
f00aae0f | 11574 | } |
348d480f PA |
11575 | } |
11576 | else | |
11577 | { | |
7987c463 | 11578 | if (opts.addressprint || loc->symtab == NULL) |
6cb06a8c TT |
11579 | gdb_printf (" at %ps", |
11580 | styled_string (address_style.style (), | |
7987c463 TT |
11581 | paddress (loc->gdbarch, |
11582 | loc->address))); | |
11583 | if (loc->symtab != NULL) | |
f8eba3c6 TT |
11584 | { |
11585 | /* If there is a single location, we can print the location | |
11586 | more nicely. */ | |
7987c463 | 11587 | if (loc->next == NULL) |
0bb296cb | 11588 | { |
6a831f06 | 11589 | const char *filename |
7987c463 | 11590 | = symtab_to_filename_for_display (loc->symtab); |
6cb06a8c TT |
11591 | gdb_printf (": file %ps, line %d.", |
11592 | styled_string (file_name_style.style (), | |
11593 | filename), | |
7987c463 | 11594 | loc->line_number); |
0bb296cb | 11595 | } |
f8eba3c6 TT |
11596 | else |
11597 | /* This is not ideal, but each location may have a | |
11598 | different file name, and this at least reflects the | |
11599 | real situation somewhat. */ | |
7987c463 | 11600 | gdb_printf (": %s.", locspec->to_string ()); |
f8eba3c6 | 11601 | } |
348d480f | 11602 | |
7987c463 | 11603 | if (loc->next) |
348d480f | 11604 | { |
066620dc | 11605 | struct bp_location *iter = loc; |
348d480f | 11606 | int n = 0; |
066620dc | 11607 | for (; iter; iter = iter->next) |
348d480f | 11608 | ++n; |
6cb06a8c | 11609 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11610 | } |
11611 | } | |
11612 | } | |
11613 | ||
40cb8ca5 SM |
11614 | /* See breakpoint.h. */ |
11615 | ||
a67bcaba | 11616 | bp_location_range breakpoint::locations () const |
40cb8ca5 | 11617 | { |
9be25986 | 11618 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11619 | } |
11620 | ||
4c6a92b1 TT |
11621 | struct bp_location * |
11622 | breakpoint::allocate_location () | |
11623 | { | |
11624 | return new bp_location (this); | |
11625 | } | |
11626 | ||
2060206e PA |
11627 | #define internal_error_pure_virtual_called() \ |
11628 | gdb_assert_not_reached ("pure virtual function called") | |
11629 | ||
4c6a92b1 TT |
11630 | int |
11631 | breakpoint::insert_location (struct bp_location *bl) | |
11632 | { | |
11633 | internal_error_pure_virtual_called (); | |
11634 | } | |
11635 | ||
4c6a92b1 TT |
11636 | int |
11637 | breakpoint::remove_location (struct bp_location *bl, | |
11638 | enum remove_bp_reason reason) | |
11639 | { | |
11640 | internal_error_pure_virtual_called (); | |
11641 | } | |
11642 | ||
4c6a92b1 TT |
11643 | int |
11644 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11645 | const address_space *aspace, | |
11646 | CORE_ADDR bp_addr, | |
11647 | const target_waitstatus &ws) | |
11648 | { | |
11649 | internal_error_pure_virtual_called (); | |
11650 | } | |
11651 | ||
4c6a92b1 TT |
11652 | int |
11653 | breakpoint::resources_needed (const struct bp_location *bl) | |
11654 | { | |
11655 | internal_error_pure_virtual_called (); | |
11656 | } | |
11657 | ||
4c6a92b1 | 11658 | enum print_stop_action |
7bd86313 | 11659 | breakpoint::print_it (const bpstat *bs) const |
4c6a92b1 TT |
11660 | { |
11661 | internal_error_pure_virtual_called (); | |
11662 | } | |
11663 | ||
4c6a92b1 | 11664 | void |
b713485d | 11665 | breakpoint::print_mention () const |
4c6a92b1 TT |
11666 | { |
11667 | internal_error_pure_virtual_called (); | |
11668 | } | |
11669 | ||
4c6a92b1 | 11670 | void |
4d1ae558 | 11671 | breakpoint::print_recreate (struct ui_file *fp) const |
4c6a92b1 TT |
11672 | { |
11673 | internal_error_pure_virtual_called (); | |
11674 | } | |
11675 | ||
2060206e PA |
11676 | /* Default breakpoint_ops methods. */ |
11677 | ||
2b5ab5b8 | 11678 | void |
74421c0b | 11679 | code_breakpoint::re_set () |
348d480f | 11680 | { |
06edf0c0 | 11681 | /* FIXME: is this still reachable? */ |
264f9890 | 11682 | if (breakpoint_location_spec_empty_p (this)) |
06edf0c0 | 11683 | { |
f00aae0f | 11684 | /* Anything without a location can't be re-set. */ |
2b5ab5b8 | 11685 | delete_breakpoint (this); |
06edf0c0 | 11686 | return; |
348d480f | 11687 | } |
06edf0c0 | 11688 | |
b3d5660a | 11689 | re_set_default (); |
348d480f PA |
11690 | } |
11691 | ||
2b5ab5b8 | 11692 | int |
74421c0b | 11693 | code_breakpoint::insert_location (struct bp_location *bl) |
348d480f | 11694 | { |
cd6c3b4f YQ |
11695 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11696 | ||
579c6ad9 | 11697 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11698 | bl->target_info.placed_address = addr; |
11699 | ||
5d926615 | 11700 | int result; |
348d480f | 11701 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
5d926615 | 11702 | result = target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11703 | else |
5d926615 TT |
11704 | result = target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
11705 | ||
11706 | if (result == 0 && bl->probe.prob != nullptr) | |
11707 | { | |
11708 | /* The insertion was successful, now let's set the probe's semaphore | |
11709 | if needed. */ | |
11710 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); | |
11711 | } | |
11712 | ||
11713 | return result; | |
348d480f PA |
11714 | } |
11715 | ||
2b5ab5b8 | 11716 | int |
74421c0b | 11717 | code_breakpoint::remove_location (struct bp_location *bl, |
2b5ab5b8 | 11718 | enum remove_bp_reason reason) |
348d480f | 11719 | { |
5d926615 TT |
11720 | if (bl->probe.prob != nullptr) |
11721 | { | |
11722 | /* Let's clear the semaphore before removing the location. */ | |
11723 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); | |
11724 | } | |
11725 | ||
348d480f PA |
11726 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
11727 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11728 | else | |
73971819 | 11729 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11730 | } |
11731 | ||
2b5ab5b8 | 11732 | int |
74421c0b | 11733 | code_breakpoint::breakpoint_hit (const struct bp_location *bl, |
2b5ab5b8 TT |
11734 | const address_space *aspace, |
11735 | CORE_ADDR bp_addr, | |
11736 | const target_waitstatus &ws) | |
348d480f | 11737 | { |
c272a98c SM |
11738 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11739 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11740 | return 0; |
11741 | ||
348d480f PA |
11742 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11743 | aspace, bp_addr)) | |
11744 | return 0; | |
11745 | ||
11746 | if (overlay_debugging /* unmapped overlay section */ | |
11747 | && section_is_overlay (bl->section) | |
11748 | && !section_is_mapped (bl->section)) | |
11749 | return 0; | |
11750 | ||
11751 | return 1; | |
11752 | } | |
11753 | ||
f293a0b5 TT |
11754 | int |
11755 | dprintf_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11756 | const address_space *aspace, | |
11757 | CORE_ADDR bp_addr, | |
11758 | const target_waitstatus &ws) | |
cd1608cc PA |
11759 | { |
11760 | if (dprintf_style == dprintf_style_agent | |
11761 | && target_can_run_breakpoint_commands ()) | |
11762 | { | |
11763 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11764 | for this address it must be for a breakpoint that happens to | |
11765 | be set at the same address. */ | |
11766 | return 0; | |
11767 | } | |
11768 | ||
f293a0b5 | 11769 | return this->ordinary_breakpoint::breakpoint_hit (bl, aspace, bp_addr, ws); |
cd1608cc PA |
11770 | } |
11771 | ||
7dd8e7ae TT |
11772 | int |
11773 | ordinary_breakpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 11774 | { |
7dd8e7ae | 11775 | gdb_assert (type == bp_hardware_breakpoint); |
348d480f PA |
11776 | |
11777 | return 1; | |
11778 | } | |
11779 | ||
7dd8e7ae | 11780 | enum print_stop_action |
7bd86313 | 11781 | ordinary_breakpoint::print_it (const bpstat *bs) const |
348d480f | 11782 | { |
348d480f | 11783 | const struct bp_location *bl; |
001c8c33 | 11784 | int bp_temp; |
79a45e25 | 11785 | struct ui_out *uiout = current_uiout; |
348d480f | 11786 | |
b6433ede | 11787 | bl = bs->bp_location_at.get (); |
348d480f | 11788 | |
7dd8e7ae | 11789 | bp_temp = disposition == disp_del; |
001c8c33 PA |
11790 | if (bl->address != bl->requested_address) |
11791 | breakpoint_adjustment_warning (bl->requested_address, | |
11792 | bl->address, | |
d8de7963 | 11793 | number, true); |
7dd8e7ae | 11794 | annotate_breakpoint (number); |
f303dbd6 PA |
11795 | maybe_print_thread_hit_breakpoint (uiout); |
11796 | ||
112e8700 | 11797 | if (uiout->is_mi_like_p ()) |
348d480f | 11798 | { |
112e8700 | 11799 | uiout->field_string ("reason", |
001c8c33 | 11800 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
7dd8e7ae | 11801 | uiout->field_string ("disp", bpdisp_text (disposition)); |
06edf0c0 | 11802 | } |
78805ff8 | 11803 | |
6a831f06 | 11804 | if (bp_temp) |
78805ff8 | 11805 | uiout->text ("Temporary breakpoint "); |
6a831f06 | 11806 | else |
78805ff8 PW |
11807 | uiout->text ("Breakpoint "); |
11808 | print_num_locno (bs, uiout); | |
11809 | uiout->text (", "); | |
06edf0c0 | 11810 | |
001c8c33 | 11811 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11812 | } |
11813 | ||
7dd8e7ae | 11814 | void |
b713485d | 11815 | ordinary_breakpoint::print_mention () const |
06edf0c0 | 11816 | { |
112e8700 | 11817 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11818 | return; |
11819 | ||
7dd8e7ae | 11820 | switch (type) |
06edf0c0 PA |
11821 | { |
11822 | case bp_breakpoint: | |
11823 | case bp_gnu_ifunc_resolver: | |
7dd8e7ae | 11824 | if (disposition == disp_del) |
6cb06a8c | 11825 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11826 | else |
6cb06a8c | 11827 | gdb_printf (_("Breakpoint")); |
7dd8e7ae TT |
11828 | gdb_printf (_(" %d"), number); |
11829 | if (type == bp_gnu_ifunc_resolver) | |
6cb06a8c | 11830 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11831 | break; |
11832 | case bp_hardware_breakpoint: | |
7dd8e7ae | 11833 | gdb_printf (_("Hardware assisted breakpoint %d"), number); |
06edf0c0 | 11834 | break; |
e7e0cddf | 11835 | case bp_dprintf: |
7dd8e7ae | 11836 | gdb_printf (_("Dprintf %d"), number); |
e7e0cddf | 11837 | break; |
06edf0c0 PA |
11838 | } |
11839 | ||
7987c463 | 11840 | say_where (); |
06edf0c0 PA |
11841 | } |
11842 | ||
7dd8e7ae | 11843 | void |
4d1ae558 | 11844 | ordinary_breakpoint::print_recreate (struct ui_file *fp) const |
06edf0c0 | 11845 | { |
7dd8e7ae | 11846 | if (type == bp_breakpoint && disposition == disp_del) |
6cb06a8c | 11847 | gdb_printf (fp, "tbreak"); |
7dd8e7ae | 11848 | else if (type == bp_breakpoint) |
6cb06a8c | 11849 | gdb_printf (fp, "break"); |
7dd8e7ae TT |
11850 | else if (type == bp_hardware_breakpoint |
11851 | && disposition == disp_del) | |
6cb06a8c | 11852 | gdb_printf (fp, "thbreak"); |
7dd8e7ae | 11853 | else if (type == bp_hardware_breakpoint) |
6cb06a8c | 11854 | gdb_printf (fp, "hbreak"); |
06edf0c0 | 11855 | else |
f34652de | 11856 | internal_error (_("unhandled breakpoint type %d"), (int) type); |
06edf0c0 | 11857 | |
709438c7 | 11858 | gdb_printf (fp, " %s", locspec->to_string ()); |
f00aae0f KS |
11859 | |
11860 | /* Print out extra_string if this breakpoint is pending. It might | |
11861 | contain, for example, conditions that were set by the user. */ | |
7dd8e7ae TT |
11862 | if (loc == NULL && extra_string != NULL) |
11863 | gdb_printf (fp, " %s", extra_string.get ()); | |
f00aae0f | 11864 | |
04d0163c | 11865 | print_recreate_thread (fp); |
06edf0c0 PA |
11866 | } |
11867 | ||
2b5ab5b8 | 11868 | std::vector<symtab_and_line> |
264f9890 PA |
11869 | code_breakpoint::decode_location_spec (location_spec *locspec, |
11870 | program_space *search_pspace) | |
983af33b | 11871 | { |
7464aeaa | 11872 | if (locspec->type () == PROBE_LOCATION_SPEC) |
264f9890 | 11873 | return bkpt_probe_decode_location_spec (this, locspec, search_pspace); |
5d926615 | 11874 | |
8f5bc641 TT |
11875 | struct linespec_result canonical; |
11876 | ||
11877 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, search_pspace, | |
11878 | NULL, 0, &canonical, multiple_symbols_all, | |
11879 | filter.get ()); | |
11880 | ||
11881 | /* We should get 0 or 1 resulting SALs. */ | |
11882 | gdb_assert (canonical.lsals.size () < 2); | |
11883 | ||
11884 | if (!canonical.lsals.empty ()) | |
11885 | { | |
11886 | const linespec_sals &lsal = canonical.lsals[0]; | |
11887 | return std::move (lsal.sals); | |
11888 | } | |
11889 | return {}; | |
983af33b SDJ |
11890 | } |
11891 | ||
06edf0c0 PA |
11892 | /* Virtual table for internal breakpoints. */ |
11893 | ||
c359fff5 TT |
11894 | void |
11895 | internal_breakpoint::re_set () | |
06edf0c0 | 11896 | { |
c359fff5 | 11897 | switch (type) |
06edf0c0 PA |
11898 | { |
11899 | /* Delete overlay event and longjmp master breakpoints; they | |
11900 | will be reset later by breakpoint_re_set. */ | |
11901 | case bp_overlay_event: | |
11902 | case bp_longjmp_master: | |
11903 | case bp_std_terminate_master: | |
11904 | case bp_exception_master: | |
c359fff5 | 11905 | delete_breakpoint (this); |
06edf0c0 PA |
11906 | break; |
11907 | ||
11908 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11909 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11910 | case bp_shlib_event: |
11911 | ||
11912 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11913 | it is set up, we do not want to touch it. */ | |
11914 | case bp_thread_event: | |
11915 | break; | |
11916 | } | |
11917 | } | |
11918 | ||
c359fff5 TT |
11919 | void |
11920 | internal_breakpoint::check_status (bpstat *bs) | |
06edf0c0 | 11921 | { |
c359fff5 | 11922 | if (type == bp_shlib_event) |
a9b3a50f PA |
11923 | { |
11924 | /* If requested, stop when the dynamic linker notifies GDB of | |
11925 | events. This allows the user to get control and place | |
11926 | breakpoints in initializer routines for dynamically loaded | |
11927 | objects (among other things). */ | |
4ec2227a TT |
11928 | bs->stop = stop_on_solib_events != 0; |
11929 | bs->print = stop_on_solib_events != 0; | |
a9b3a50f PA |
11930 | } |
11931 | else | |
4ec2227a | 11932 | bs->stop = false; |
06edf0c0 PA |
11933 | } |
11934 | ||
c359fff5 | 11935 | enum print_stop_action |
7bd86313 | 11936 | internal_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11937 | { |
c359fff5 | 11938 | switch (type) |
06edf0c0 | 11939 | { |
348d480f PA |
11940 | case bp_shlib_event: |
11941 | /* Did we stop because the user set the stop_on_solib_events | |
11942 | variable? (If so, we report this as a generic, "Stopped due | |
11943 | to shlib event" message.) */ | |
4e9e993a | 11944 | print_solib_event (false); |
348d480f PA |
11945 | break; |
11946 | ||
11947 | case bp_thread_event: | |
11948 | /* Not sure how we will get here. | |
11949 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11950 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11951 | break; |
11952 | ||
11953 | case bp_overlay_event: | |
11954 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11955 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11956 | break; |
11957 | ||
11958 | case bp_longjmp_master: | |
11959 | /* These should never be enabled. */ | |
6cb06a8c | 11960 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11961 | break; |
11962 | ||
11963 | case bp_std_terminate_master: | |
11964 | /* These should never be enabled. */ | |
6cb06a8c TT |
11965 | gdb_printf (_("std::terminate Master Breakpoint: " |
11966 | "gdb should not stop!\n")); | |
348d480f PA |
11967 | break; |
11968 | ||
11969 | case bp_exception_master: | |
11970 | /* These should never be enabled. */ | |
6cb06a8c TT |
11971 | gdb_printf (_("Exception Master Breakpoint: " |
11972 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11973 | break; |
11974 | } | |
11975 | ||
001c8c33 | 11976 | return PRINT_NOTHING; |
06edf0c0 PA |
11977 | } |
11978 | ||
c359fff5 | 11979 | void |
b713485d | 11980 | internal_breakpoint::print_mention () const |
06edf0c0 PA |
11981 | { |
11982 | /* Nothing to mention. These breakpoints are internal. */ | |
11983 | } | |
11984 | ||
06edf0c0 PA |
11985 | /* Virtual table for momentary breakpoints */ |
11986 | ||
1fd30a47 TT |
11987 | void |
11988 | momentary_breakpoint::re_set () | |
06edf0c0 PA |
11989 | { |
11990 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 11991 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
11992 | Otherwise these should have been blown away via the cleanup chain |
11993 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11994 | } | |
11995 | ||
1fd30a47 TT |
11996 | void |
11997 | momentary_breakpoint::check_status (bpstat *bs) | |
06edf0c0 PA |
11998 | { |
11999 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12000 | } | |
12001 | ||
1fd30a47 | 12002 | enum print_stop_action |
7bd86313 | 12003 | momentary_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 12004 | { |
001c8c33 | 12005 | return PRINT_UNKNOWN; |
348d480f PA |
12006 | } |
12007 | ||
1fd30a47 | 12008 | void |
b713485d | 12009 | momentary_breakpoint::print_mention () const |
348d480f | 12010 | { |
06edf0c0 | 12011 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12012 | } |
12013 | ||
e2e4d78b JK |
12014 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12015 | ||
12016 | It gets cleared already on the removal of the first one of such placed | |
12017 | breakpoints. This is OK as they get all removed altogether. */ | |
12018 | ||
c1fc2657 | 12019 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12020 | { |
c1fc2657 | 12021 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12022 | |
c1fc2657 | 12023 | if (tp != NULL) |
e2e4d78b | 12024 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12025 | } |
12026 | ||
55aa24fb | 12027 | static void |
264f9890 PA |
12028 | bkpt_probe_create_sals_from_location_spec (location_spec *locspec, |
12029 | struct linespec_result *canonical) | |
03ada39e | 12030 | |
55aa24fb SDJ |
12031 | { |
12032 | struct linespec_sals lsal; | |
12033 | ||
264f9890 | 12034 | lsal.sals = parse_probes (locspec, NULL, canonical); |
709438c7 | 12035 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 12036 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12037 | } |
12038 | ||
6c5b2ebe | 12039 | static std::vector<symtab_and_line> |
264f9890 PA |
12040 | bkpt_probe_decode_location_spec (struct breakpoint *b, |
12041 | location_spec *locspec, | |
12042 | program_space *search_pspace) | |
55aa24fb | 12043 | { |
264f9890 PA |
12044 | std::vector<symtab_and_line> sals |
12045 | = parse_probes (locspec, search_pspace, NULL); | |
6c5b2ebe | 12046 | if (sals.empty ()) |
55aa24fb | 12047 | error (_("probe not found")); |
6c5b2ebe | 12048 | return sals; |
55aa24fb SDJ |
12049 | } |
12050 | ||
779dcceb TT |
12051 | int |
12052 | tracepoint::breakpoint_hit (const struct bp_location *bl, | |
12053 | const address_space *aspace, CORE_ADDR bp_addr, | |
12054 | const target_waitstatus &ws) | |
348d480f PA |
12055 | { |
12056 | /* By definition, the inferior does not report stops at | |
12057 | tracepoints. */ | |
12058 | return 0; | |
74960c60 VP |
12059 | } |
12060 | ||
779dcceb TT |
12061 | void |
12062 | tracepoint::print_one_detail (struct ui_out *uiout) const | |
74960c60 | 12063 | { |
779dcceb | 12064 | if (!static_trace_marker_id.empty ()) |
348d480f | 12065 | { |
7b572efb TT |
12066 | gdb_assert (type == bp_static_tracepoint |
12067 | || type == bp_static_marker_tracepoint); | |
cc59ec59 | 12068 | |
6a831f06 PA |
12069 | uiout->message ("\tmarker id is %pF\n", |
12070 | string_field ("static-tracepoint-marker-string-id", | |
779dcceb | 12071 | static_trace_marker_id.c_str ())); |
348d480f | 12072 | } |
0d381245 VP |
12073 | } |
12074 | ||
779dcceb | 12075 | void |
b713485d | 12076 | tracepoint::print_mention () const |
a474d7c2 | 12077 | { |
112e8700 | 12078 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12079 | return; |
cc59ec59 | 12080 | |
779dcceb | 12081 | switch (type) |
348d480f PA |
12082 | { |
12083 | case bp_tracepoint: | |
6cb06a8c | 12084 | gdb_printf (_("Tracepoint")); |
779dcceb | 12085 | gdb_printf (_(" %d"), number); |
348d480f PA |
12086 | break; |
12087 | case bp_fast_tracepoint: | |
6cb06a8c | 12088 | gdb_printf (_("Fast tracepoint")); |
779dcceb | 12089 | gdb_printf (_(" %d"), number); |
348d480f PA |
12090 | break; |
12091 | case bp_static_tracepoint: | |
7b572efb | 12092 | case bp_static_marker_tracepoint: |
6cb06a8c | 12093 | gdb_printf (_("Static tracepoint")); |
779dcceb | 12094 | gdb_printf (_(" %d"), number); |
348d480f PA |
12095 | break; |
12096 | default: | |
f34652de | 12097 | internal_error (_("unhandled tracepoint type %d"), (int) type); |
348d480f PA |
12098 | } |
12099 | ||
7987c463 | 12100 | say_where (); |
a474d7c2 PA |
12101 | } |
12102 | ||
779dcceb | 12103 | void |
4d1ae558 | 12104 | tracepoint::print_recreate (struct ui_file *fp) const |
a474d7c2 | 12105 | { |
779dcceb | 12106 | if (type == bp_fast_tracepoint) |
6cb06a8c | 12107 | gdb_printf (fp, "ftrace"); |
7b572efb TT |
12108 | else if (type == bp_static_tracepoint |
12109 | || type == bp_static_marker_tracepoint) | |
6cb06a8c | 12110 | gdb_printf (fp, "strace"); |
779dcceb | 12111 | else if (type == bp_tracepoint) |
6cb06a8c | 12112 | gdb_printf (fp, "trace"); |
348d480f | 12113 | else |
f34652de | 12114 | internal_error (_("unhandled tracepoint type %d"), (int) type); |
cc59ec59 | 12115 | |
709438c7 | 12116 | gdb_printf (fp, " %s", locspec->to_string ()); |
04d0163c | 12117 | print_recreate_thread (fp); |
d9b3f62e | 12118 | |
779dcceb TT |
12119 | if (pass_count) |
12120 | gdb_printf (fp, " passcount %d\n", pass_count); | |
a474d7c2 PA |
12121 | } |
12122 | ||
bac7c5cf | 12123 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12124 | |
12125 | static void | |
264f9890 PA |
12126 | tracepoint_probe_create_sals_from_location_spec |
12127 | (location_spec *locspec, | |
03ada39e | 12128 | struct linespec_result *canonical) |
55aa24fb SDJ |
12129 | { |
12130 | /* We use the same method for breakpoint on probes. */ | |
264f9890 | 12131 | bkpt_probe_create_sals_from_location_spec (locspec, canonical); |
55aa24fb SDJ |
12132 | } |
12133 | ||
f293a0b5 TT |
12134 | void |
12135 | dprintf_breakpoint::re_set () | |
5c2b4418 | 12136 | { |
b3d5660a | 12137 | re_set_default (); |
5c2b4418 | 12138 | |
f00aae0f | 12139 | /* extra_string should never be non-NULL for dprintf. */ |
f293a0b5 | 12140 | gdb_assert (extra_string != NULL); |
5c2b4418 HZ |
12141 | |
12142 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12143 | 2 - create a dprintf, which resolves fine. | |
12144 | 3 - disconnect from target 1 | |
12145 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12146 | ||
12147 | After steps #3/#4, you'll want the dprintf command list to | |
12148 | be updated, because target 1 and 2 may well return different | |
12149 | answers for target_can_run_breakpoint_commands(). | |
12150 | Given absence of finer grained resetting, we get to do | |
12151 | it all the time. */ | |
f293a0b5 TT |
12152 | if (extra_string != NULL) |
12153 | update_dprintf_command_list (this); | |
5c2b4418 HZ |
12154 | } |
12155 | ||
f293a0b5 | 12156 | /* Implement the "print_recreate" method for dprintf. */ |
2d9442cc | 12157 | |
f293a0b5 | 12158 | void |
4d1ae558 | 12159 | dprintf_breakpoint::print_recreate (struct ui_file *fp) const |
2d9442cc | 12160 | { |
709438c7 | 12161 | gdb_printf (fp, "dprintf %s,%s", locspec->to_string (), extra_string.get ()); |
04d0163c | 12162 | print_recreate_thread (fp); |
2d9442cc HZ |
12163 | } |
12164 | ||
f293a0b5 | 12165 | /* Implement the "after_condition_true" method for dprintf. |
9d6e6e84 HZ |
12166 | |
12167 | dprintf's are implemented with regular commands in their command | |
12168 | list, but we run the commands here instead of before presenting the | |
12169 | stop to the user, as dprintf's don't actually cause a stop. This | |
12170 | also makes it so that the commands of multiple dprintfs at the same | |
12171 | address are all handled. */ | |
12172 | ||
f293a0b5 TT |
12173 | void |
12174 | dprintf_breakpoint::after_condition_true (struct bpstat *bs) | |
9d6e6e84 | 12175 | { |
9d6e6e84 HZ |
12176 | /* dprintf's never cause a stop. This wasn't set in the |
12177 | check_status hook instead because that would make the dprintf's | |
12178 | condition not be evaluated. */ | |
4ec2227a | 12179 | bs->stop = false; |
9d6e6e84 HZ |
12180 | |
12181 | /* Run the command list here. Take ownership of it instead of | |
12182 | copying. We never want these commands to run later in | |
12183 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12184 | be set at same address as this dprintf, or even if running the | |
12185 | commands here throws. */ | |
9c95aea1 KB |
12186 | counted_command_line cmds = std::move (bs->commands); |
12187 | gdb_assert (cmds != nullptr); | |
12188 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
12189 | } |
12190 | ||
983af33b SDJ |
12191 | /* The breakpoint_ops structure to be used on static tracepoints with |
12192 | markers (`-m'). */ | |
12193 | ||
12194 | static void | |
264f9890 PA |
12195 | strace_marker_create_sals_from_location_spec (location_spec *locspec, |
12196 | struct linespec_result *canonical) | |
983af33b SDJ |
12197 | { |
12198 | struct linespec_sals lsal; | |
f00aae0f | 12199 | const char *arg_start, *arg; |
983af33b | 12200 | |
40d97ee2 | 12201 | arg = arg_start = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 12202 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12203 | |
f2fc3015 TT |
12204 | std::string str (arg_start, arg - arg_start); |
12205 | const char *ptr = str.c_str (); | |
264f9890 PA |
12206 | canonical->locspec |
12207 | = new_linespec_location_spec (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12208 | |
709438c7 | 12209 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 12210 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12211 | } |
12212 | ||
12213 | static void | |
12214 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12215 | struct linespec_result *canonical, | |
e1e01040 PA |
12216 | gdb::unique_xmalloc_ptr<char> cond_string, |
12217 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12218 | enum bptype type_wanted, |
12219 | enum bpdisp disposition, | |
12220 | int thread, | |
12221 | int task, int ignore_count, | |
983af33b | 12222 | int from_tty, int enabled, |
44f238bb | 12223 | int internal, unsigned flags) |
983af33b | 12224 | { |
6c5b2ebe | 12225 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12226 | |
12227 | /* If the user is creating a static tracepoint by marker id | |
12228 | (strace -m MARKER_ID), then store the sals index, so that | |
12229 | breakpoint_re_set can try to match up which of the newly | |
12230 | found markers corresponds to this one, and, don't try to | |
12231 | expand multiple locations for each sal, given than SALS | |
12232 | already should contain all sals for MARKER_ID. */ | |
12233 | ||
6c5b2ebe | 12234 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12235 | { |
5c1ddcb6 | 12236 | location_spec_up locspec = canonical->locspec->clone (); |
983af33b | 12237 | |
3b003a61 PA |
12238 | std::unique_ptr<tracepoint> tp |
12239 | (new tracepoint (gdbarch, | |
12240 | type_wanted, | |
12241 | lsal.sals[i], | |
264f9890 | 12242 | std::move (locspec), |
3b003a61 PA |
12243 | NULL, |
12244 | std::move (cond_string), | |
12245 | std::move (extra_string), | |
12246 | disposition, | |
12247 | thread, task, ignore_count, | |
12248 | from_tty, enabled, flags, | |
12249 | canonical->special_display)); | |
12250 | ||
983af33b SDJ |
12251 | /* Given that its possible to have multiple markers with |
12252 | the same string id, if the user is creating a static | |
12253 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12254 | store the sals index, so that breakpoint_re_set can | |
12255 | try to match up which of the newly found markers | |
12256 | corresponds to this one */ | |
12257 | tp->static_trace_marker_id_idx = i; | |
12258 | ||
b270e6f9 | 12259 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12260 | } |
12261 | } | |
12262 | ||
6d7a8c56 | 12263 | std::vector<symtab_and_line> |
264f9890 PA |
12264 | static_marker_tracepoint::decode_location_spec (location_spec *locspec, |
12265 | program_space *search_pspace) | |
983af33b | 12266 | { |
40d97ee2 | 12267 | const char *s = as_linespec_location_spec (locspec)->spec_string; |
983af33b | 12268 | |
6c5b2ebe | 12269 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
6d7a8c56 | 12270 | if (sals.size () > static_trace_marker_id_idx) |
983af33b | 12271 | { |
6d7a8c56 | 12272 | sals[0] = sals[static_trace_marker_id_idx]; |
6c5b2ebe PA |
12273 | sals.resize (1); |
12274 | return sals; | |
983af33b SDJ |
12275 | } |
12276 | else | |
6d7a8c56 | 12277 | error (_("marker %s not found"), static_trace_marker_id.c_str ()); |
983af33b SDJ |
12278 | } |
12279 | ||
8613a476 TT |
12280 | /* Static tracepoints with marker (`-m'). */ |
12281 | static struct breakpoint_ops strace_marker_breakpoint_ops = | |
12282 | { | |
264f9890 | 12283 | strace_marker_create_sals_from_location_spec, |
8613a476 TT |
12284 | strace_marker_create_breakpoints_sal, |
12285 | }; | |
983af33b | 12286 | |
d8de7963 | 12287 | static bool |
983af33b SDJ |
12288 | strace_marker_p (struct breakpoint *b) |
12289 | { | |
7b572efb | 12290 | return b->type == bp_static_marker_tracepoint; |
983af33b SDJ |
12291 | } |
12292 | ||
53a5351d | 12293 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12294 | structures. */ |
c906108c SS |
12295 | |
12296 | void | |
fba45db2 | 12297 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12298 | { |
8a3fe4f8 | 12299 | gdb_assert (bpt != NULL); |
c906108c | 12300 | |
4a64f543 MS |
12301 | /* Has this bp already been deleted? This can happen because |
12302 | multiple lists can hold pointers to bp's. bpstat lists are | |
12303 | especial culprits. | |
12304 | ||
12305 | One example of this happening is a watchpoint's scope bp. When | |
12306 | the scope bp triggers, we notice that the watchpoint is out of | |
12307 | scope, and delete it. We also delete its scope bp. But the | |
12308 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12309 | That bpstat is then checked for auto-deleting bp's, which are | |
12310 | deleted. | |
12311 | ||
12312 | A real solution to this problem might involve reference counts in | |
12313 | bp's, and/or giving them pointers back to their referencing | |
12314 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12315 | storage when no more references were extent. A cheaper bandaid | |
12316 | was chosen. */ | |
c906108c SS |
12317 | if (bpt->type == bp_none) |
12318 | return; | |
12319 | ||
4a64f543 MS |
12320 | /* At least avoid this stale reference until the reference counting |
12321 | of breakpoints gets resolved. */ | |
d0fb5eae | 12322 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12323 | { |
d0fb5eae | 12324 | struct breakpoint *related; |
3a5c3e22 | 12325 | struct watchpoint *w; |
d0fb5eae JK |
12326 | |
12327 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12328 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12329 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12330 | w = (struct watchpoint *) bpt; |
12331 | else | |
12332 | w = NULL; | |
12333 | if (w != NULL) | |
12334 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12335 | |
12336 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12337 | for (related = bpt; related->related_breakpoint != bpt; | |
12338 | related = related->related_breakpoint); | |
12339 | related->related_breakpoint = bpt->related_breakpoint; | |
12340 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12341 | } |
12342 | ||
a9634178 TJB |
12343 | /* watch_command_1 creates a watchpoint but only sets its number if |
12344 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12345 | a problem in that process, we'll be asked to delete the half-created | |
12346 | watchpoint. In that case, don't announce the deletion. */ | |
12347 | if (bpt->number) | |
76727919 | 12348 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12349 | |
c906108c SS |
12350 | if (breakpoint_chain == bpt) |
12351 | breakpoint_chain = bpt->next; | |
12352 | ||
43892fdf | 12353 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12354 | if (b->next == bpt) |
01add95b SM |
12355 | { |
12356 | b->next = bpt->next; | |
12357 | break; | |
12358 | } | |
c906108c | 12359 | |
f431efe5 PA |
12360 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12361 | been freed. */ | |
12362 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12363 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12364 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12365 | commands are associated with the bpstat; if we remove it here, | |
12366 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12367 | event-top.c won't do anything, and temporary breakpoints with | |
12368 | commands won't work. */ | |
12369 | ||
12370 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12371 | ||
4a64f543 MS |
12372 | /* Now that breakpoint is removed from breakpoint list, update the |
12373 | global location list. This will remove locations that used to | |
12374 | belong to this breakpoint. Do this before freeing the breakpoint | |
12375 | itself, since remove_breakpoint looks at location's owner. It | |
12376 | might be better design to have location completely | |
12377 | self-contained, but it's not the case now. */ | |
44702360 | 12378 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12379 | |
4a64f543 MS |
12380 | /* On the chance that someone will soon try again to delete this |
12381 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12382 | bpt->type = bp_none; |
4d01a485 | 12383 | delete bpt; |
c906108c SS |
12384 | } |
12385 | ||
51be5b68 PA |
12386 | /* Iterator function to call a user-provided callback function once |
12387 | for each of B and its related breakpoints. */ | |
12388 | ||
12389 | static void | |
12390 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12391 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12392 | { |
12393 | struct breakpoint *related; | |
12394 | ||
12395 | related = b; | |
12396 | do | |
12397 | { | |
12398 | struct breakpoint *next; | |
12399 | ||
12400 | /* FUNCTION may delete RELATED. */ | |
12401 | next = related->related_breakpoint; | |
12402 | ||
12403 | if (next == related) | |
12404 | { | |
12405 | /* RELATED is the last ring entry. */ | |
48649e1b | 12406 | function (related); |
51be5b68 PA |
12407 | |
12408 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12409 | B. There's nothing left to do anyway, so just break | |
12410 | out. */ | |
12411 | break; | |
12412 | } | |
12413 | else | |
48649e1b | 12414 | function (related); |
51be5b68 PA |
12415 | |
12416 | related = next; | |
12417 | } | |
12418 | while (related != b); | |
12419 | } | |
95a42b64 | 12420 | |
4495129a | 12421 | static void |
981a3fb3 | 12422 | delete_command (const char *arg, int from_tty) |
c906108c | 12423 | { |
ea9365bb TT |
12424 | dont_repeat (); |
12425 | ||
c906108c SS |
12426 | if (arg == 0) |
12427 | { | |
12428 | int breaks_to_delete = 0; | |
12429 | ||
46c6471b | 12430 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12431 | internal breakpoints, these have to be deleted with an |
12432 | explicit breakpoint number argument. */ | |
43892fdf | 12433 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12434 | if (user_breakpoint_p (b)) |
973d738b DJ |
12435 | { |
12436 | breaks_to_delete = 1; | |
12437 | break; | |
12438 | } | |
c906108c SS |
12439 | |
12440 | /* Ask user only if there are some breakpoints to delete. */ | |
12441 | if (!from_tty | |
e2e0b3e5 | 12442 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12443 | for (breakpoint *b : all_breakpoints_safe ()) |
12444 | if (user_breakpoint_p (b)) | |
12445 | delete_breakpoint (b); | |
c906108c SS |
12446 | } |
12447 | else | |
48649e1b | 12448 | map_breakpoint_numbers |
b926417a | 12449 | (arg, [&] (breakpoint *br) |
48649e1b | 12450 | { |
b926417a | 12451 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12452 | }); |
c906108c SS |
12453 | } |
12454 | ||
c2f4122d PA |
12455 | /* Return true if all locations of B bound to PSPACE are pending. If |
12456 | PSPACE is NULL, all locations of all program spaces are | |
12457 | considered. */ | |
12458 | ||
d8de7963 | 12459 | static bool |
c2f4122d | 12460 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12461 | { |
40cb8ca5 | 12462 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12463 | if ((pspace == NULL |
12464 | || loc->pspace == pspace) | |
12465 | && !loc->shlib_disabled | |
8645ff69 | 12466 | && !loc->pspace->executing_startup) |
d8de7963 AB |
12467 | return false; |
12468 | return true; | |
fe3f5fa8 VP |
12469 | } |
12470 | ||
776592bf | 12471 | /* Subroutine of update_breakpoint_locations to simplify it. |
d8de7963 | 12472 | Return true if multiple fns in list LOC have the same name. |
776592bf DE |
12473 | Null names are ignored. */ |
12474 | ||
d8de7963 | 12475 | static bool |
776592bf DE |
12476 | ambiguous_names_p (struct bp_location *loc) |
12477 | { | |
12478 | struct bp_location *l; | |
2698f5ea | 12479 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12480 | xcalloc, xfree)); |
776592bf DE |
12481 | |
12482 | for (l = loc; l != NULL; l = l->next) | |
12483 | { | |
12484 | const char **slot; | |
23d6ee64 | 12485 | const char *name = l->function_name.get (); |
776592bf DE |
12486 | |
12487 | /* Allow for some names to be NULL, ignore them. */ | |
12488 | if (name == NULL) | |
12489 | continue; | |
12490 | ||
c1fb9836 | 12491 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12492 | INSERT); |
4a64f543 MS |
12493 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12494 | returns NULL. */ | |
776592bf | 12495 | if (*slot != NULL) |
d8de7963 | 12496 | return true; |
776592bf DE |
12497 | *slot = name; |
12498 | } | |
12499 | ||
d8de7963 | 12500 | return false; |
776592bf DE |
12501 | } |
12502 | ||
0fb4aa4b PA |
12503 | /* When symbols change, it probably means the sources changed as well, |
12504 | and it might mean the static tracepoint markers are no longer at | |
12505 | the same address or line numbers they used to be at last we | |
12506 | checked. Losing your static tracepoints whenever you rebuild is | |
12507 | undesirable. This function tries to resync/rematch gdb static | |
12508 | tracepoints with the markers on the target, for static tracepoints | |
12509 | that have not been set by marker id. Static tracepoint that have | |
12510 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12511 | The heuristic is: | |
12512 | ||
12513 | 1) For a tracepoint set at a specific address, look for a marker at | |
12514 | the old PC. If one is found there, assume to be the same marker. | |
12515 | If the name / string id of the marker found is different from the | |
12516 | previous known name, assume that means the user renamed the marker | |
12517 | in the sources, and output a warning. | |
12518 | ||
12519 | 2) For a tracepoint set at a given line number, look for a marker | |
12520 | at the new address of the old line number. If one is found there, | |
12521 | assume to be the same marker. If the name / string id of the | |
12522 | marker found is different from the previous known name, assume that | |
12523 | means the user renamed the marker in the sources, and output a | |
12524 | warning. | |
12525 | ||
12526 | 3) If a marker is no longer found at the same address or line, it | |
12527 | may mean the marker no longer exists. But it may also just mean | |
12528 | the code changed a bit. Maybe the user added a few lines of code | |
12529 | that made the marker move up or down (in line number terms). Ask | |
12530 | the target for info about the marker with the string id as we knew | |
12531 | it. If found, update line number and address in the matching | |
12532 | static tracepoint. This will get confused if there's more than one | |
12533 | marker with the same ID (possible in UST, although unadvised | |
12534 | precisely because it confuses tools). */ | |
12535 | ||
12536 | static struct symtab_and_line | |
12537 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12538 | { | |
d9b3f62e | 12539 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12540 | struct static_tracepoint_marker marker; |
12541 | CORE_ADDR pc; | |
0fb4aa4b PA |
12542 | |
12543 | pc = sal.pc; | |
12544 | if (sal.line) | |
12545 | find_line_pc (sal.symtab, sal.line, &pc); | |
12546 | ||
12547 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12548 | { | |
5d9310c4 | 12549 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12550 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12551 | b->number, tp->static_trace_marker_id.c_str (), |
12552 | marker.str_id.c_str ()); | |
0fb4aa4b | 12553 | |
5d9310c4 | 12554 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12555 | |
12556 | return sal; | |
12557 | } | |
12558 | ||
12559 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12560 | by string ID. */ | |
12561 | if (!sal.explicit_pc | |
12562 | && sal.line != 0 | |
12563 | && sal.symtab != NULL | |
5d9310c4 | 12564 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12565 | { |
5d9310c4 SM |
12566 | std::vector<static_tracepoint_marker> markers |
12567 | = target_static_tracepoint_markers_by_strid | |
12568 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12569 | |
5d9310c4 | 12570 | if (!markers.empty ()) |
0fb4aa4b | 12571 | { |
0fb4aa4b | 12572 | struct symbol *sym; |
80e1d417 | 12573 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12574 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 12575 | |
5d9310c4 | 12576 | tpmarker = &markers[0]; |
0fb4aa4b | 12577 | |
5d9310c4 | 12578 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12579 | |
12580 | warning (_("marker for static tracepoint %d (%s) not " | |
12581 | "found at previous line number"), | |
5d9310c4 | 12582 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12583 | |
51abb421 | 12584 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12585 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12586 | uiout->text ("Now in "); |
0fb4aa4b PA |
12587 | if (sym) |
12588 | { | |
987012b8 | 12589 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12590 | function_name_style.style ()); |
112e8700 | 12591 | uiout->text (" at "); |
0fb4aa4b | 12592 | } |
112e8700 | 12593 | uiout->field_string ("file", |
cbe56571 | 12594 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12595 | file_name_style.style ()); |
112e8700 | 12596 | uiout->text (":"); |
0fb4aa4b | 12597 | |
112e8700 | 12598 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12599 | { |
0b0865da | 12600 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12601 | |
112e8700 | 12602 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12603 | } |
12604 | ||
381befee | 12605 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12606 | uiout->text ("\n"); |
0fb4aa4b | 12607 | |
80e1d417 | 12608 | b->loc->line_number = sal2.line; |
2f202fde | 12609 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12610 | |
40d97ee2 PA |
12611 | std::unique_ptr<explicit_location_spec> els |
12612 | (new explicit_location_spec ()); | |
12613 | els->source_filename | |
12614 | = xstrdup (symtab_to_filename_for_display (sal2.symtab)); | |
12615 | els->line_offset.offset = b->loc->line_number; | |
12616 | els->line_offset.sign = LINE_OFFSET_NONE; | |
12617 | ||
12618 | b->locspec = std::move (els); | |
0fb4aa4b PA |
12619 | |
12620 | /* Might be nice to check if function changed, and warn if | |
12621 | so. */ | |
0fb4aa4b PA |
12622 | } |
12623 | } | |
12624 | return sal; | |
12625 | } | |
12626 | ||
d8de7963 | 12627 | /* Returns true iff locations A and B are sufficiently same that |
8d3788bd VP |
12628 | we don't need to report breakpoint as changed. */ |
12629 | ||
d8de7963 | 12630 | static bool |
8d3788bd VP |
12631 | locations_are_equal (struct bp_location *a, struct bp_location *b) |
12632 | { | |
12633 | while (a && b) | |
12634 | { | |
12635 | if (a->address != b->address) | |
d8de7963 | 12636 | return false; |
8d3788bd VP |
12637 | |
12638 | if (a->shlib_disabled != b->shlib_disabled) | |
d8de7963 | 12639 | return false; |
8d3788bd VP |
12640 | |
12641 | if (a->enabled != b->enabled) | |
d8de7963 | 12642 | return false; |
8d3788bd | 12643 | |
b5fa468f | 12644 | if (a->disabled_by_cond != b->disabled_by_cond) |
d8de7963 | 12645 | return false; |
b5fa468f | 12646 | |
8d3788bd VP |
12647 | a = a->next; |
12648 | b = b->next; | |
12649 | } | |
12650 | ||
12651 | if ((a == NULL) != (b == NULL)) | |
d8de7963 | 12652 | return false; |
8d3788bd | 12653 | |
d8de7963 | 12654 | return true; |
8d3788bd VP |
12655 | } |
12656 | ||
c2f4122d PA |
12657 | /* Split all locations of B that are bound to PSPACE out of B's |
12658 | location list to a separate list and return that list's head. If | |
12659 | PSPACE is NULL, hoist out all locations of B. */ | |
12660 | ||
12661 | static struct bp_location * | |
12662 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12663 | { | |
12664 | struct bp_location head; | |
12665 | struct bp_location *i = b->loc; | |
12666 | struct bp_location **i_link = &b->loc; | |
12667 | struct bp_location *hoisted = &head; | |
12668 | ||
12669 | if (pspace == NULL) | |
12670 | { | |
12671 | i = b->loc; | |
12672 | b->loc = NULL; | |
12673 | return i; | |
12674 | } | |
12675 | ||
12676 | head.next = NULL; | |
12677 | ||
12678 | while (i != NULL) | |
12679 | { | |
12680 | if (i->pspace == pspace) | |
12681 | { | |
12682 | *i_link = i->next; | |
12683 | i->next = NULL; | |
12684 | hoisted->next = i; | |
12685 | hoisted = i; | |
12686 | } | |
12687 | else | |
12688 | i_link = &i->next; | |
12689 | i = *i_link; | |
12690 | } | |
12691 | ||
12692 | return head.next; | |
12693 | } | |
12694 | ||
12695 | /* Create new breakpoint locations for B (a hardware or software | |
12696 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12697 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12698 | FILTER_PSPACE. Locations of other program spaces are left | |
12699 | untouched. */ | |
f1310107 | 12700 | |
0e30163f | 12701 | void |
74421c0b | 12702 | update_breakpoint_locations (code_breakpoint *b, |
c2f4122d | 12703 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12704 | gdb::array_view<const symtab_and_line> sals, |
12705 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12706 | { |
c2f4122d | 12707 | struct bp_location *existing_locations; |
0d381245 | 12708 | |
6c5b2ebe | 12709 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12710 | { |
12711 | /* Ranged breakpoints have only one start location and one end | |
12712 | location. */ | |
12713 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12714 | gdb_printf (gdb_stderr, |
12715 | _("Could not reset ranged breakpoint %d: " | |
12716 | "multiple locations found\n"), | |
12717 | b->number); | |
f8eba3c6 TT |
12718 | return; |
12719 | } | |
f1310107 | 12720 | |
4a64f543 MS |
12721 | /* If there's no new locations, and all existing locations are |
12722 | pending, don't do anything. This optimizes the common case where | |
12723 | all locations are in the same shared library, that was unloaded. | |
12724 | We'd like to retain the location, so that when the library is | |
12725 | loaded again, we don't loose the enabled/disabled status of the | |
12726 | individual locations. */ | |
6c5b2ebe | 12727 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12728 | return; |
12729 | ||
c2f4122d | 12730 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12731 | |
6c5b2ebe | 12732 | for (const auto &sal : sals) |
fe3f5fa8 | 12733 | { |
f8eba3c6 TT |
12734 | struct bp_location *new_loc; |
12735 | ||
6c5b2ebe | 12736 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12737 | |
06615628 | 12738 | new_loc = b->add_location (sal); |
fe3f5fa8 | 12739 | |
0d381245 VP |
12740 | /* Reparse conditions, they might contain references to the |
12741 | old symtab. */ | |
12742 | if (b->cond_string != NULL) | |
12743 | { | |
bbc13ae3 | 12744 | const char *s; |
fe3f5fa8 | 12745 | |
6f781ee3 | 12746 | s = b->cond_string.get (); |
a70b8144 | 12747 | try |
0d381245 | 12748 | { |
6c5b2ebe PA |
12749 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12750 | block_for_pc (sal.pc), | |
0d381245 VP |
12751 | 0); |
12752 | } | |
230d2906 | 12753 | catch (const gdb_exception_error &e) |
0d381245 | 12754 | { |
b5fa468f | 12755 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12756 | } |
12757 | } | |
fe3f5fa8 | 12758 | |
6c5b2ebe | 12759 | if (!sals_end.empty ()) |
f1310107 | 12760 | { |
6c5b2ebe | 12761 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12762 | |
6c5b2ebe | 12763 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12764 | } |
0d381245 | 12765 | } |
fe3f5fa8 | 12766 | |
4a64f543 MS |
12767 | /* If possible, carry over 'disable' status from existing |
12768 | breakpoints. */ | |
0d381245 VP |
12769 | { |
12770 | struct bp_location *e = existing_locations; | |
776592bf DE |
12771 | /* If there are multiple breakpoints with the same function name, |
12772 | e.g. for inline functions, comparing function names won't work. | |
12773 | Instead compare pc addresses; this is just a heuristic as things | |
12774 | may have moved, but in practice it gives the correct answer | |
12775 | often enough until a better solution is found. */ | |
12776 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12777 | ||
0d381245 VP |
12778 | for (; e; e = e->next) |
12779 | { | |
b5fa468f | 12780 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12781 | { |
776592bf DE |
12782 | if (have_ambiguous_names) |
12783 | { | |
40cb8ca5 | 12784 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12785 | { |
12786 | /* Ignore software vs hardware location type at | |
12787 | this point, because with "set breakpoint | |
12788 | auto-hw", after a re-set, locations that were | |
12789 | hardware can end up as software, or vice versa. | |
12790 | As mentioned above, this is an heuristic and in | |
12791 | practice should give the correct answer often | |
12792 | enough. */ | |
12793 | if (breakpoint_locations_match (e, l, true)) | |
12794 | { | |
b5fa468f TBA |
12795 | l->enabled = e->enabled; |
12796 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12797 | break; |
12798 | } | |
12799 | } | |
776592bf DE |
12800 | } |
12801 | else | |
12802 | { | |
40cb8ca5 | 12803 | for (bp_location *l : b->locations ()) |
776592bf | 12804 | if (l->function_name |
23d6ee64 TT |
12805 | && strcmp (e->function_name.get (), |
12806 | l->function_name.get ()) == 0) | |
776592bf | 12807 | { |
b5fa468f TBA |
12808 | l->enabled = e->enabled; |
12809 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12810 | break; |
12811 | } | |
12812 | } | |
0d381245 VP |
12813 | } |
12814 | } | |
12815 | } | |
fe3f5fa8 | 12816 | |
8d3788bd | 12817 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12818 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12819 | } |
12820 | ||
264f9890 | 12821 | /* Find the SaL locations corresponding to the given LOCSPEC. |
ef23e705 TJB |
12822 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12823 | ||
2c9a6d72 TT |
12824 | std::vector<symtab_and_line> |
12825 | code_breakpoint::location_spec_to_sals (location_spec *locspec, | |
12826 | struct program_space *search_pspace, | |
12827 | int *found) | |
ef23e705 | 12828 | { |
cc06b668 | 12829 | struct gdb_exception exception; |
ef23e705 | 12830 | |
6c5b2ebe PA |
12831 | std::vector<symtab_and_line> sals; |
12832 | ||
a70b8144 | 12833 | try |
ef23e705 | 12834 | { |
2c9a6d72 | 12835 | sals = decode_location_spec (locspec, search_pspace); |
ef23e705 | 12836 | } |
94aeb44b | 12837 | catch (gdb_exception_error &e) |
ef23e705 | 12838 | { |
d8de7963 | 12839 | int not_found_and_ok = false; |
492d29ea | 12840 | |
ef23e705 TJB |
12841 | /* For pending breakpoints, it's expected that parsing will |
12842 | fail until the right shared library is loaded. User has | |
12843 | already told to create pending breakpoints and don't need | |
12844 | extra messages. If breakpoint is in bp_shlib_disabled | |
12845 | state, then user already saw the message about that | |
12846 | breakpoint being disabled, and don't want to see more | |
12847 | errors. */ | |
58438ac1 | 12848 | if (e.error == NOT_FOUND_ERROR |
2c9a6d72 TT |
12849 | && (condition_not_parsed |
12850 | || (loc != NULL | |
c2f4122d | 12851 | && search_pspace != NULL |
2c9a6d72 TT |
12852 | && loc->pspace != search_pspace) |
12853 | || (loc && loc->shlib_disabled) | |
12854 | || (loc && loc->pspace->executing_startup) | |
12855 | || enable_state == bp_disabled)) | |
d8de7963 | 12856 | not_found_and_ok = true; |
ef23e705 TJB |
12857 | |
12858 | if (!not_found_and_ok) | |
12859 | { | |
12860 | /* We surely don't want to warn about the same breakpoint | |
12861 | 10 times. One solution, implemented here, is disable | |
12862 | the breakpoint on error. Another solution would be to | |
12863 | have separate 'warning emitted' flag. Since this | |
12864 | happens only when a binary has changed, I don't know | |
12865 | which approach is better. */ | |
2c9a6d72 | 12866 | enable_state = bp_disabled; |
eedc3f4f | 12867 | throw; |
ef23e705 | 12868 | } |
94aeb44b TT |
12869 | |
12870 | exception = std::move (e); | |
ef23e705 TJB |
12871 | } |
12872 | ||
492d29ea | 12873 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12874 | { |
6c5b2ebe PA |
12875 | for (auto &sal : sals) |
12876 | resolve_sal_pc (&sal); | |
2c9a6d72 | 12877 | if (condition_not_parsed && extra_string != NULL) |
ef23e705 | 12878 | { |
2c9a6d72 TT |
12879 | gdb::unique_xmalloc_ptr<char> local_cond, local_extra; |
12880 | int local_thread, local_task; | |
ef23e705 | 12881 | |
2c9a6d72 TT |
12882 | find_condition_and_thread_for_sals (sals, extra_string.get (), |
12883 | &local_cond, &local_thread, | |
12884 | &local_task, &local_extra); | |
12885 | gdb_assert (cond_string == nullptr); | |
12886 | if (local_cond != nullptr) | |
12887 | cond_string = std::move (local_cond); | |
12888 | thread = local_thread; | |
12889 | task = local_task; | |
12890 | if (local_extra != nullptr) | |
12891 | extra_string = std::move (local_extra); | |
12892 | condition_not_parsed = 0; | |
ef23e705 TJB |
12893 | } |
12894 | ||
2c9a6d72 TT |
12895 | if (type == bp_static_tracepoint) |
12896 | sals[0] = update_static_tracepoint (this, sals[0]); | |
ef23e705 | 12897 | |
58438ac1 TT |
12898 | *found = 1; |
12899 | } | |
12900 | else | |
12901 | *found = 0; | |
ef23e705 TJB |
12902 | |
12903 | return sals; | |
12904 | } | |
12905 | ||
348d480f PA |
12906 | /* The default re_set method, for typical hardware or software |
12907 | breakpoints. Reevaluate the breakpoint and recreate its | |
12908 | locations. */ | |
12909 | ||
b3d5660a TT |
12910 | void |
12911 | code_breakpoint::re_set_default () | |
ef23e705 | 12912 | { |
c2f4122d | 12913 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 12914 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 12915 | |
6c5b2ebe | 12916 | int found; |
2c9a6d72 TT |
12917 | std::vector<symtab_and_line> sals = location_spec_to_sals (locspec.get (), |
12918 | filter_pspace, | |
12919 | &found); | |
ef23e705 | 12920 | if (found) |
6c5b2ebe | 12921 | expanded = std::move (sals); |
ef23e705 | 12922 | |
b3d5660a | 12923 | if (locspec_range_end != nullptr) |
f1310107 | 12924 | { |
6c5b2ebe | 12925 | std::vector<symtab_and_line> sals_end |
2c9a6d72 | 12926 | = location_spec_to_sals (locspec_range_end.get (), |
264f9890 | 12927 | filter_pspace, &found); |
f1310107 | 12928 | if (found) |
6c5b2ebe | 12929 | expanded_end = std::move (sals_end); |
f1310107 TJB |
12930 | } |
12931 | ||
b3d5660a | 12932 | update_breakpoint_locations (this, filter_pspace, expanded, expanded_end); |
28010a5d PA |
12933 | } |
12934 | ||
983af33b SDJ |
12935 | /* Default method for creating SALs from an address string. It basically |
12936 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12937 | ||
12938 | static void | |
264f9890 PA |
12939 | create_sals_from_location_spec_default (location_spec *locspec, |
12940 | struct linespec_result *canonical) | |
983af33b | 12941 | { |
264f9890 | 12942 | parse_breakpoint_sals (locspec, canonical); |
983af33b SDJ |
12943 | } |
12944 | ||
bf469271 | 12945 | /* Reset a breakpoint. */ |
c906108c | 12946 | |
bf469271 PA |
12947 | static void |
12948 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 12949 | { |
fdf44873 TT |
12950 | input_radix = b->input_radix; |
12951 | set_language (b->language); | |
c906108c | 12952 | |
c47614fe | 12953 | b->re_set (); |
c906108c SS |
12954 | } |
12955 | ||
c2f4122d PA |
12956 | /* Re-set breakpoint locations for the current program space. |
12957 | Locations bound to other program spaces are left untouched. */ | |
12958 | ||
c906108c | 12959 | void |
69de3c6a | 12960 | breakpoint_re_set (void) |
c906108c | 12961 | { |
c5aa993b | 12962 | { |
fdf44873 TT |
12963 | scoped_restore_current_language save_language; |
12964 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 12965 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 12966 | |
8e817061 JB |
12967 | /* breakpoint_re_set_one sets the current_language to the language |
12968 | of the breakpoint it is resetting (see prepare_re_set_context) | |
12969 | before re-evaluating the breakpoint's location. This change can | |
12970 | unfortunately get undone by accident if the language_mode is set | |
12971 | to auto, and we either switch frames, or more likely in this context, | |
12972 | we select the current frame. | |
12973 | ||
12974 | We prevent this by temporarily turning the language_mode to | |
12975 | language_mode_manual. We restore it once all breakpoints | |
12976 | have been reset. */ | |
12977 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
12978 | language_mode = language_mode_manual; | |
12979 | ||
5ed8105e PA |
12980 | /* Note: we must not try to insert locations until after all |
12981 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
12982 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
12983 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 12984 | |
1428b37a | 12985 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 12986 | { |
a70b8144 | 12987 | try |
bf469271 PA |
12988 | { |
12989 | breakpoint_re_set_one (b); | |
12990 | } | |
230d2906 | 12991 | catch (const gdb_exception &ex) |
bf469271 PA |
12992 | { |
12993 | exception_fprintf (gdb_stderr, ex, | |
12994 | "Error in re-setting breakpoint %d: ", | |
12995 | b->number); | |
12996 | } | |
5ed8105e | 12997 | } |
5ed8105e PA |
12998 | |
12999 | jit_breakpoint_re_set (); | |
13000 | } | |
6c95b8df | 13001 | |
af02033e PP |
13002 | create_overlay_event_breakpoint (); |
13003 | create_longjmp_master_breakpoint (); | |
13004 | create_std_terminate_master_breakpoint (); | |
186c406b | 13005 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13006 | |
13007 | /* Now we can insert. */ | |
13008 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13009 | } |
13010 | \f | |
c906108c SS |
13011 | /* Reset the thread number of this breakpoint: |
13012 | ||
13013 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13014 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13015 | void |
fba45db2 | 13016 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13017 | { |
13018 | if (b->thread != -1) | |
13019 | { | |
00431a78 | 13020 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13021 | |
13022 | /* We're being called after following a fork. The new fork is | |
13023 | selected as current, and unless this was a vfork will have a | |
13024 | different program space from the original thread. Reset that | |
13025 | as well. */ | |
13026 | b->loc->pspace = current_program_space; | |
c906108c SS |
13027 | } |
13028 | } | |
13029 | ||
03ac34d5 MS |
13030 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13031 | If from_tty is nonzero, it prints a message to that effect, | |
13032 | which ends with a period (no newline). */ | |
13033 | ||
c906108c | 13034 | void |
fba45db2 | 13035 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13036 | { |
c906108c SS |
13037 | if (count < 0) |
13038 | count = 0; | |
13039 | ||
43892fdf | 13040 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13041 | if (b->number == bptnum) |
01add95b SM |
13042 | { |
13043 | if (is_tracepoint (b)) | |
13044 | { | |
13045 | if (from_tty && count != 0) | |
6cb06a8c TT |
13046 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
13047 | bptnum); | |
01add95b SM |
13048 | return; |
13049 | } | |
13050 | ||
13051 | b->ignore_count = count; | |
13052 | if (from_tty) | |
13053 | { | |
13054 | if (count == 0) | |
6cb06a8c TT |
13055 | gdb_printf (_("Will stop next time " |
13056 | "breakpoint %d is reached."), | |
13057 | bptnum); | |
01add95b | 13058 | else if (count == 1) |
6cb06a8c TT |
13059 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
13060 | bptnum); | |
01add95b | 13061 | else |
6cb06a8c TT |
13062 | gdb_printf (_("Will ignore next %d " |
13063 | "crossings of breakpoint %d."), | |
13064 | count, bptnum); | |
01add95b SM |
13065 | } |
13066 | gdb::observers::breakpoint_modified.notify (b); | |
13067 | return; | |
13068 | } | |
c906108c | 13069 | |
8a3fe4f8 | 13070 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13071 | } |
13072 | ||
c906108c SS |
13073 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13074 | ||
13075 | static void | |
0b39b52e | 13076 | ignore_command (const char *args, int from_tty) |
c906108c | 13077 | { |
0b39b52e | 13078 | const char *p = args; |
52f0bd74 | 13079 | int num; |
c906108c SS |
13080 | |
13081 | if (p == 0) | |
e2e0b3e5 | 13082 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13083 | |
c906108c | 13084 | num = get_number (&p); |
5c44784c | 13085 | if (num == 0) |
8a3fe4f8 | 13086 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13087 | if (*p == 0) |
8a3fe4f8 | 13088 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13089 | |
13090 | set_ignore_count (num, | |
13091 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13092 | from_tty); | |
221ea385 | 13093 | if (from_tty) |
6cb06a8c | 13094 | gdb_printf ("\n"); |
c906108c SS |
13095 | } |
13096 | \f | |
d0fe4701 XR |
13097 | |
13098 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13099 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13100 | |
13101 | static void | |
d0fe4701 XR |
13102 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13103 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13104 | { |
d0fe4701 XR |
13105 | if (bp_num_range.first == 0) |
13106 | { | |
13107 | warning (_("bad breakpoint number at or near '%d'"), | |
13108 | bp_num_range.first); | |
13109 | } | |
13110 | else | |
c906108c | 13111 | { |
d0fe4701 | 13112 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13113 | { |
d0fe4701 XR |
13114 | bool match = false; |
13115 | ||
1428b37a | 13116 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 13117 | if (b->number == i) |
5c44784c | 13118 | { |
bfd28288 | 13119 | match = true; |
48649e1b | 13120 | function (b); |
11cf8741 | 13121 | break; |
5c44784c | 13122 | } |
bfd28288 | 13123 | if (!match) |
6cb06a8c | 13124 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13125 | } |
c906108c SS |
13126 | } |
13127 | } | |
13128 | ||
d0fe4701 XR |
13129 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13130 | ARGS. */ | |
13131 | ||
13132 | static void | |
13133 | map_breakpoint_numbers (const char *args, | |
13134 | gdb::function_view<void (breakpoint *)> function) | |
13135 | { | |
13136 | if (args == NULL || *args == '\0') | |
13137 | error_no_arg (_("one or more breakpoint numbers")); | |
13138 | ||
13139 | number_or_range_parser parser (args); | |
13140 | ||
13141 | while (!parser.finished ()) | |
13142 | { | |
13143 | int num = parser.get_number (); | |
13144 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13145 | } | |
13146 | } | |
13147 | ||
13148 | /* Return the breakpoint location structure corresponding to the | |
13149 | BP_NUM and LOC_NUM values. */ | |
13150 | ||
0d381245 | 13151 | static struct bp_location * |
d0fe4701 | 13152 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13153 | { |
43892fdf | 13154 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
13155 | |
13156 | if (!b || b->number != bp_num) | |
d0fe4701 | 13157 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13158 | |
0d381245 | 13159 | if (loc_num == 0) |
d0fe4701 | 13160 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13161 | |
d0fe4701 | 13162 | int n = 0; |
40cb8ca5 | 13163 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
13164 | if (++n == loc_num) |
13165 | return loc; | |
13166 | ||
13167 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13168 | } |
13169 | ||
95e95a6d PA |
13170 | /* Modes of operation for extract_bp_num. */ |
13171 | enum class extract_bp_kind | |
13172 | { | |
13173 | /* Extracting a breakpoint number. */ | |
13174 | bp, | |
13175 | ||
13176 | /* Extracting a location number. */ | |
13177 | loc, | |
13178 | }; | |
13179 | ||
13180 | /* Extract a breakpoint or location number (as determined by KIND) | |
13181 | from the string starting at START. TRAILER is a character which | |
13182 | can be found after the number. If you don't want a trailer, use | |
13183 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13184 | string. This always returns a positive integer. */ | |
13185 | ||
13186 | static int | |
13187 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13188 | int trailer, const char **end_out = NULL) | |
13189 | { | |
13190 | const char *end = start; | |
13191 | int num = get_number_trailer (&end, trailer); | |
13192 | if (num < 0) | |
13193 | error (kind == extract_bp_kind::bp | |
13194 | ? _("Negative breakpoint number '%.*s'") | |
13195 | : _("Negative breakpoint location number '%.*s'"), | |
13196 | int (end - start), start); | |
13197 | if (num == 0) | |
13198 | error (kind == extract_bp_kind::bp | |
13199 | ? _("Bad breakpoint number '%.*s'") | |
13200 | : _("Bad breakpoint location number '%.*s'"), | |
13201 | int (end - start), start); | |
13202 | ||
13203 | if (end_out != NULL) | |
13204 | *end_out = end; | |
13205 | return num; | |
13206 | } | |
13207 | ||
13208 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13209 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13210 | representing the (inclusive) range. The returned pair's elements | |
13211 | are always positive integers. */ | |
13212 | ||
13213 | static std::pair<int, int> | |
13214 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13215 | const std::string &arg, | |
13216 | std::string::size_type arg_offset) | |
13217 | { | |
13218 | std::pair<int, int> range; | |
13219 | const char *bp_loc = &arg[arg_offset]; | |
13220 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13221 | if (dash != std::string::npos) | |
13222 | { | |
13223 | /* bp_loc is a range (x-z). */ | |
13224 | if (arg.length () == dash + 1) | |
13225 | error (kind == extract_bp_kind::bp | |
13226 | ? _("Bad breakpoint number at or near: '%s'") | |
13227 | : _("Bad breakpoint location number at or near: '%s'"), | |
13228 | bp_loc); | |
13229 | ||
13230 | const char *end; | |
13231 | const char *start_first = bp_loc; | |
13232 | const char *start_second = &arg[dash + 1]; | |
13233 | range.first = extract_bp_num (kind, start_first, '-'); | |
13234 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13235 | ||
13236 | if (range.first > range.second) | |
13237 | error (kind == extract_bp_kind::bp | |
13238 | ? _("Inverted breakpoint range at '%.*s'") | |
13239 | : _("Inverted breakpoint location range at '%.*s'"), | |
13240 | int (end - start_first), start_first); | |
13241 | } | |
13242 | else | |
13243 | { | |
13244 | /* bp_loc is a single value. */ | |
13245 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13246 | range.second = range.first; | |
13247 | } | |
13248 | return range; | |
13249 | } | |
13250 | ||
d0fe4701 XR |
13251 | /* Extract the breakpoint/location range specified by ARG. Returns |
13252 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13253 | BP_LOC_RANGE. | |
13254 | ||
13255 | ARG may be in any of the following forms: | |
13256 | ||
13257 | x where 'x' is a breakpoint number. | |
13258 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13259 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13260 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13261 | location number range. | |
13262 | */ | |
13263 | ||
cc638e86 | 13264 | static void |
d0fe4701 XR |
13265 | extract_bp_number_and_location (const std::string &arg, |
13266 | std::pair<int, int> &bp_num_range, | |
13267 | std::pair<int, int> &bp_loc_range) | |
13268 | { | |
13269 | std::string::size_type dot = arg.find ('.'); | |
13270 | ||
13271 | if (dot != std::string::npos) | |
13272 | { | |
13273 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13274 | ||
13275 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13276 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13277 | |
95e95a6d PA |
13278 | bp_num_range.first |
13279 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13280 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13281 | |
95e95a6d PA |
13282 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13283 | arg, dot + 1); | |
d0fe4701 XR |
13284 | } |
13285 | else | |
13286 | { | |
13287 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13288 | |
95e95a6d | 13289 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13290 | bp_loc_range.first = 0; |
13291 | bp_loc_range.second = 0; | |
13292 | } | |
d0fe4701 XR |
13293 | } |
13294 | ||
13295 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13296 | specifies whether to enable or disable. */ | |
13297 | ||
13298 | static void | |
13299 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13300 | { | |
13301 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13302 | if (loc != NULL) | |
13303 | { | |
b5fa468f TBA |
13304 | if (loc->disabled_by_cond && enable) |
13305 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13306 | "cannot enable."), bp_num, loc_num); | |
13307 | ||
d0fe4701 XR |
13308 | if (loc->enabled != enable) |
13309 | { | |
13310 | loc->enabled = enable; | |
13311 | mark_breakpoint_location_modified (loc); | |
13312 | } | |
13313 | if (target_supports_enable_disable_tracepoint () | |
13314 | && current_trace_status ()->running && loc->owner | |
13315 | && is_tracepoint (loc->owner)) | |
13316 | target_disable_tracepoint (loc); | |
13317 | } | |
13318 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13319 | |
e5213e2c SF |
13320 | gdb::observers::breakpoint_modified.notify (loc->owner); |
13321 | } | |
13322 | ||
13323 | /* Calculates LOC_NUM for LOC by traversing the bp_location chain of LOC's | |
13324 | owner. 1-based indexing. -1 signals NOT FOUND. */ | |
13325 | ||
13326 | static int | |
d8a77e4c | 13327 | find_loc_num_by_location (const bp_location *loc) |
e5213e2c SF |
13328 | { |
13329 | if (loc != nullptr && loc->owner != nullptr) | |
13330 | { | |
13331 | /* Locations use 1-based indexing. */ | |
13332 | int loc_num = 1; | |
13333 | for (bp_location *it : loc->owner->locations ()) | |
13334 | { | |
13335 | if (it == loc) | |
13336 | return loc_num; | |
13337 | loc_num++; | |
13338 | } | |
13339 | } | |
13340 | return -1; | |
13341 | } | |
13342 | ||
13343 | /* Enable or disable a breakpoint location LOC. ENABLE | |
13344 | specifies whether to enable or disable. */ | |
13345 | ||
13346 | void | |
13347 | enable_disable_bp_location (bp_location *loc, bool enable) | |
13348 | { | |
13349 | if (loc == nullptr) | |
13350 | error (_("Breakpoint location is invalid.")); | |
13351 | ||
13352 | if (loc->owner == nullptr) | |
13353 | error (_("Breakpoint location does not have an owner breakpoint.")); | |
13354 | ||
13355 | if (loc->disabled_by_cond && enable) | |
13356 | { | |
13357 | int loc_num = find_loc_num_by_location (loc); | |
13358 | if (loc_num == -1) | |
13359 | error (_("Breakpoint location LOC_NUM could not be found.")); | |
13360 | else | |
13361 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13362 | "cannot enable."), loc->owner->number, loc_num); | |
13363 | } | |
13364 | ||
13365 | if (loc->enabled != enable) | |
13366 | { | |
13367 | loc->enabled = enable; | |
13368 | mark_breakpoint_location_modified (loc); | |
13369 | } | |
13370 | ||
13371 | if (target_supports_enable_disable_tracepoint () | |
13372 | && current_trace_status ()->running && loc->owner | |
13373 | && is_tracepoint (loc->owner)) | |
13374 | target_disable_tracepoint (loc); | |
13375 | ||
13376 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13377 | gdb::observers::breakpoint_modified.notify (loc->owner); |
d0fe4701 XR |
13378 | } |
13379 | ||
13380 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13381 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13382 | (inclusive) range of location numbers of that breakpoint to | |
13383 | enable/disable. ENABLE specifies whether to enable or disable the | |
13384 | location. */ | |
13385 | ||
13386 | static void | |
13387 | enable_disable_breakpoint_location_range (int bp_num, | |
13388 | std::pair<int, int> &bp_loc_range, | |
13389 | bool enable) | |
13390 | { | |
13391 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13392 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13393 | } | |
0d381245 | 13394 | |
1900040c MS |
13395 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13396 | If from_tty is nonzero, it prints a message to that effect, | |
13397 | which ends with a period (no newline). */ | |
13398 | ||
c906108c | 13399 | void |
fba45db2 | 13400 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13401 | { |
13402 | /* Never disable a watchpoint scope breakpoint; we want to | |
13403 | hit them when we leave scope so we can delete both the | |
13404 | watchpoint and its scope breakpoint at that time. */ | |
13405 | if (bpt->type == bp_watchpoint_scope) | |
13406 | return; | |
13407 | ||
b5de0fa7 | 13408 | bpt->enable_state = bp_disabled; |
c906108c | 13409 | |
b775012e LM |
13410 | /* Mark breakpoint locations modified. */ |
13411 | mark_breakpoint_modified (bpt); | |
13412 | ||
d248b706 KY |
13413 | if (target_supports_enable_disable_tracepoint () |
13414 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13415 | { | |
40cb8ca5 | 13416 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13417 | target_disable_tracepoint (location); |
13418 | } | |
13419 | ||
44702360 | 13420 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13421 | |
76727919 | 13422 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13423 | } |
13424 | ||
d0fe4701 XR |
13425 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13426 | specified in ARGS. ARGS may be in any of the formats handled by | |
13427 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13428 | or disable the breakpoints/locations. */ | |
13429 | ||
c906108c | 13430 | static void |
d0fe4701 | 13431 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13432 | { |
c906108c | 13433 | if (args == 0) |
46c6471b | 13434 | { |
43892fdf | 13435 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13436 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13437 | { |
13438 | if (enable) | |
13439 | enable_breakpoint (bpt); | |
13440 | else | |
13441 | disable_breakpoint (bpt); | |
13442 | } | |
46c6471b | 13443 | } |
9eaabc75 | 13444 | else |
0d381245 | 13445 | { |
cb791d59 | 13446 | std::string num = extract_arg (&args); |
9eaabc75 | 13447 | |
cb791d59 | 13448 | while (!num.empty ()) |
d248b706 | 13449 | { |
d0fe4701 | 13450 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13451 | |
cc638e86 PA |
13452 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13453 | ||
13454 | if (bp_loc_range.first == bp_loc_range.second | |
78805ff8 PW |
13455 | && (bp_loc_range.first == 0 |
13456 | || (bp_loc_range.first == 1 | |
13457 | && bp_num_range.first == bp_num_range.second | |
13458 | && !has_multiple_locations (bp_num_range.first)))) | |
d0fe4701 | 13459 | { |
78805ff8 PW |
13460 | /* Handle breakpoint ids with formats 'x' or 'x-z' |
13461 | or 'y.1' where y has only one code location. */ | |
cc638e86 PA |
13462 | map_breakpoint_number_range (bp_num_range, |
13463 | enable | |
13464 | ? enable_breakpoint | |
13465 | : disable_breakpoint); | |
13466 | } | |
13467 | else | |
13468 | { | |
13469 | /* Handle breakpoint ids with formats 'x.y' or | |
13470 | 'x.y-z'. */ | |
13471 | enable_disable_breakpoint_location_range | |
13472 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13473 | } |
9eaabc75 | 13474 | num = extract_arg (&args); |
d248b706 | 13475 | } |
0d381245 | 13476 | } |
c906108c SS |
13477 | } |
13478 | ||
d0fe4701 XR |
13479 | /* The disable command disables the specified breakpoints/locations |
13480 | (or all defined breakpoints) so they're no longer effective in | |
13481 | stopping the inferior. ARGS may be in any of the forms defined in | |
13482 | extract_bp_number_and_location. */ | |
13483 | ||
13484 | static void | |
13485 | disable_command (const char *args, int from_tty) | |
13486 | { | |
13487 | enable_disable_command (args, from_tty, false); | |
13488 | } | |
13489 | ||
c906108c | 13490 | static void |
816338b5 SS |
13491 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13492 | int count) | |
c906108c | 13493 | { |
afe38095 | 13494 | int target_resources_ok; |
c906108c SS |
13495 | |
13496 | if (bpt->type == bp_hardware_breakpoint) | |
13497 | { | |
13498 | int i; | |
c5aa993b | 13499 | i = hw_breakpoint_used_count (); |
53a5351d | 13500 | target_resources_ok = |
d92524f1 | 13501 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13502 | i + 1, 0); |
c906108c | 13503 | if (target_resources_ok == 0) |
8a3fe4f8 | 13504 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13505 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13506 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13507 | } |
13508 | ||
cc60f2e3 | 13509 | if (is_watchpoint (bpt)) |
c906108c | 13510 | { |
d07205c2 | 13511 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13512 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13513 | |
a70b8144 | 13514 | try |
c906108c | 13515 | { |
3a5c3e22 PA |
13516 | struct watchpoint *w = (struct watchpoint *) bpt; |
13517 | ||
1e718ff1 TJB |
13518 | orig_enable_state = bpt->enable_state; |
13519 | bpt->enable_state = bp_enabled; | |
d8de7963 | 13520 | update_watchpoint (w, true /* reparse */); |
c906108c | 13521 | } |
230d2906 | 13522 | catch (const gdb_exception &e) |
c5aa993b | 13523 | { |
1e718ff1 | 13524 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13525 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13526 | bpt->number); | |
13527 | return; | |
c5aa993b | 13528 | } |
c906108c | 13529 | } |
0101ce28 | 13530 | |
b775012e LM |
13531 | bpt->enable_state = bp_enabled; |
13532 | ||
13533 | /* Mark breakpoint locations modified. */ | |
13534 | mark_breakpoint_modified (bpt); | |
13535 | ||
d248b706 KY |
13536 | if (target_supports_enable_disable_tracepoint () |
13537 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13538 | { | |
40cb8ca5 | 13539 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13540 | target_enable_tracepoint (location); |
13541 | } | |
13542 | ||
b4c291bb | 13543 | bpt->disposition = disposition; |
816338b5 | 13544 | bpt->enable_count = count; |
44702360 | 13545 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13546 | |
76727919 | 13547 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13548 | } |
13549 | ||
fe3f5fa8 | 13550 | |
c906108c | 13551 | void |
fba45db2 | 13552 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13553 | { |
816338b5 | 13554 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13555 | } |
13556 | ||
d0fe4701 XR |
13557 | /* The enable command enables the specified breakpoints/locations (or |
13558 | all defined breakpoints) so they once again become (or continue to | |
13559 | be) effective in stopping the inferior. ARGS may be in any of the | |
13560 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13561 | |
c906108c | 13562 | static void |
981a3fb3 | 13563 | enable_command (const char *args, int from_tty) |
c906108c | 13564 | { |
d0fe4701 | 13565 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13566 | } |
13567 | ||
c906108c | 13568 | static void |
4495129a | 13569 | enable_once_command (const char *args, int from_tty) |
c906108c | 13570 | { |
48649e1b TT |
13571 | map_breakpoint_numbers |
13572 | (args, [&] (breakpoint *b) | |
13573 | { | |
13574 | iterate_over_related_breakpoints | |
13575 | (b, [&] (breakpoint *bpt) | |
13576 | { | |
13577 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13578 | }); | |
13579 | }); | |
816338b5 SS |
13580 | } |
13581 | ||
13582 | static void | |
4495129a | 13583 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13584 | { |
b9d61307 SM |
13585 | int count; |
13586 | ||
13587 | if (args == NULL) | |
13588 | error_no_arg (_("hit count")); | |
13589 | ||
13590 | count = get_number (&args); | |
816338b5 | 13591 | |
48649e1b TT |
13592 | map_breakpoint_numbers |
13593 | (args, [&] (breakpoint *b) | |
13594 | { | |
13595 | iterate_over_related_breakpoints | |
13596 | (b, [&] (breakpoint *bpt) | |
13597 | { | |
13598 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13599 | }); | |
13600 | }); | |
c906108c SS |
13601 | } |
13602 | ||
c906108c | 13603 | static void |
4495129a | 13604 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13605 | { |
48649e1b TT |
13606 | map_breakpoint_numbers |
13607 | (args, [&] (breakpoint *b) | |
13608 | { | |
13609 | iterate_over_related_breakpoints | |
13610 | (b, [&] (breakpoint *bpt) | |
13611 | { | |
13612 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13613 | }); | |
13614 | }); | |
c906108c SS |
13615 | } |
13616 | \f | |
1f3b5d1b PP |
13617 | /* Invalidate last known value of any hardware watchpoint if |
13618 | the memory which that value represents has been written to by | |
13619 | GDB itself. */ | |
13620 | ||
13621 | static void | |
8de0566d YQ |
13622 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13623 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13624 | const bfd_byte *data) |
13625 | { | |
43892fdf | 13626 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13627 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13628 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13629 | { |
3a5c3e22 | 13630 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13631 | |
850645cf | 13632 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13633 | { |
40cb8ca5 | 13634 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13635 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13636 | && loc->address + loc->length > addr | |
13637 | && addr + len > loc->address) | |
13638 | { | |
3a5c3e22 | 13639 | wp->val = NULL; |
4c1d86d9 | 13640 | wp->val_valid = false; |
3a5c3e22 PA |
13641 | } |
13642 | } | |
1f3b5d1b PP |
13643 | } |
13644 | } | |
13645 | ||
8181d85f DJ |
13646 | /* Create and insert a breakpoint for software single step. */ |
13647 | ||
13648 | void | |
6c95b8df | 13649 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13650 | const address_space *aspace, |
4a64f543 | 13651 | CORE_ADDR next_pc) |
8181d85f | 13652 | { |
7c16b83e PA |
13653 | struct thread_info *tp = inferior_thread (); |
13654 | struct symtab_and_line sal; | |
13655 | CORE_ADDR pc = next_pc; | |
8181d85f | 13656 | |
34b7e8a6 PA |
13657 | if (tp->control.single_step_breakpoints == NULL) |
13658 | { | |
960bc2bd | 13659 | std::unique_ptr<breakpoint> b |
7ab97995 PA |
13660 | (new momentary_breakpoint (gdbarch, bp_single_step, |
13661 | current_program_space, | |
13662 | null_frame_id, | |
13663 | tp->global_num)); | |
960bc2bd | 13664 | |
34b7e8a6 | 13665 | tp->control.single_step_breakpoints |
960bc2bd | 13666 | = add_to_breakpoint_chain (std::move (b)); |
34b7e8a6 | 13667 | } |
8181d85f | 13668 | |
7c16b83e PA |
13669 | sal = find_pc_line (pc, 0); |
13670 | sal.pc = pc; | |
13671 | sal.section = find_pc_overlay (pc); | |
13672 | sal.explicit_pc = 1; | |
960bc2bd PA |
13673 | |
13674 | auto *ss_bp | |
98ed24fb TT |
13675 | = (gdb::checked_static_cast<momentary_breakpoint *> |
13676 | (tp->control.single_step_breakpoints)); | |
960bc2bd | 13677 | ss_bp->add_location (sal); |
8181d85f | 13678 | |
7c16b83e | 13679 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13680 | } |
13681 | ||
93f9a11f YQ |
13682 | /* Insert single step breakpoints according to the current state. */ |
13683 | ||
13684 | int | |
13685 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13686 | { | |
f5ea389a | 13687 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13688 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13689 | |
f5ea389a | 13690 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13691 | |
a0ff9e1a | 13692 | if (!next_pcs.empty ()) |
93f9a11f | 13693 | { |
bd2b40ac | 13694 | frame_info_ptr frame = get_current_frame (); |
8b86c959 | 13695 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13696 | |
a0ff9e1a | 13697 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13698 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13699 | ||
93f9a11f YQ |
13700 | return 1; |
13701 | } | |
13702 | else | |
13703 | return 0; | |
13704 | } | |
13705 | ||
34b7e8a6 | 13706 | /* See breakpoint.h. */ |
f02253f1 HZ |
13707 | |
13708 | int | |
7c16b83e | 13709 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13710 | const address_space *aspace, |
7c16b83e | 13711 | CORE_ADDR pc) |
1aafd4da | 13712 | { |
40cb8ca5 | 13713 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13714 | if (loc->inserted |
13715 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13716 | return 1; | |
1aafd4da | 13717 | |
7c16b83e | 13718 | return 0; |
ef370185 JB |
13719 | } |
13720 | ||
13721 | /* Check whether a software single-step breakpoint is inserted at | |
13722 | PC. */ | |
13723 | ||
13724 | int | |
accd0bcd | 13725 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13726 | CORE_ADDR pc) |
13727 | { | |
43892fdf | 13728 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13729 | { |
13730 | if (bpt->type == bp_single_step | |
13731 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13732 | return 1; | |
13733 | } | |
13734 | return 0; | |
1aafd4da UW |
13735 | } |
13736 | ||
1042e4c0 SS |
13737 | /* Tracepoint-specific operations. */ |
13738 | ||
13739 | /* Set tracepoint count to NUM. */ | |
13740 | static void | |
13741 | set_tracepoint_count (int num) | |
13742 | { | |
13743 | tracepoint_count = num; | |
4fa62494 | 13744 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13745 | } |
13746 | ||
70221824 | 13747 | static void |
0b39b52e | 13748 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13749 | { |
264f9890 PA |
13750 | location_spec_up locspec = string_to_location_spec (&arg, |
13751 | current_language); | |
13752 | const struct breakpoint_ops *ops = breakpoint_ops_for_location_spec | |
13753 | (locspec.get (), true /* is_tracepoint */); | |
55aa24fb | 13754 | |
558a9d82 | 13755 | create_breakpoint (get_current_arch (), |
264f9890 | 13756 | locspec.get (), |
10a636cc | 13757 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13758 | 0 /* tempflag */, |
13759 | bp_tracepoint /* type_wanted */, | |
13760 | 0 /* Ignore count */, | |
13761 | pending_break_support, | |
13762 | ops, | |
13763 | from_tty, | |
13764 | 1 /* enabled */, | |
13765 | 0 /* internal */, 0); | |
1042e4c0 SS |
13766 | } |
13767 | ||
70221824 | 13768 | static void |
0b39b52e | 13769 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13770 | { |
264f9890 PA |
13771 | location_spec_up locspec = string_to_location_spec (&arg, |
13772 | current_language); | |
558a9d82 | 13773 | create_breakpoint (get_current_arch (), |
264f9890 | 13774 | locspec.get (), |
10a636cc | 13775 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13776 | 0 /* tempflag */, |
13777 | bp_fast_tracepoint /* type_wanted */, | |
13778 | 0 /* Ignore count */, | |
13779 | pending_break_support, | |
74421c0b | 13780 | &code_breakpoint_ops, |
558a9d82 YQ |
13781 | from_tty, |
13782 | 1 /* enabled */, | |
13783 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13784 | } |
13785 | ||
13786 | /* strace command implementation. Creates a static tracepoint. */ | |
13787 | ||
70221824 | 13788 | static void |
0b39b52e | 13789 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13790 | { |
a678887d | 13791 | const struct breakpoint_ops *ops; |
264f9890 | 13792 | location_spec_up locspec; |
7b572efb | 13793 | enum bptype type; |
983af33b SDJ |
13794 | |
13795 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13796 | or with a normal static tracepoint. */ | |
61012eef | 13797 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13798 | { |
13799 | ops = &strace_marker_breakpoint_ops; | |
264f9890 PA |
13800 | locspec = new_linespec_location_spec (&arg, |
13801 | symbol_name_match_type::FULL); | |
7b572efb | 13802 | type = bp_static_marker_tracepoint; |
f00aae0f | 13803 | } |
983af33b | 13804 | else |
f00aae0f | 13805 | { |
74421c0b | 13806 | ops = &code_breakpoint_ops; |
264f9890 | 13807 | locspec = string_to_location_spec (&arg, current_language); |
7b572efb | 13808 | type = bp_static_tracepoint; |
f00aae0f | 13809 | } |
983af33b | 13810 | |
558a9d82 | 13811 | create_breakpoint (get_current_arch (), |
264f9890 | 13812 | locspec.get (), |
10a636cc | 13813 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 | 13814 | 0 /* tempflag */, |
7b572efb | 13815 | type /* type_wanted */, |
558a9d82 YQ |
13816 | 0 /* Ignore count */, |
13817 | pending_break_support, | |
13818 | ops, | |
13819 | from_tty, | |
13820 | 1 /* enabled */, | |
13821 | 0 /* internal */, 0); | |
7a697b8d SS |
13822 | } |
13823 | ||
409873ef SS |
13824 | /* Set up a fake reader function that gets command lines from a linked |
13825 | list that was acquired during tracepoint uploading. */ | |
13826 | ||
13827 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13828 | static int next_cmd; |
409873ef | 13829 | |
f8631e5e SM |
13830 | static const char * |
13831 | read_uploaded_action (std::string &buffer) | |
409873ef | 13832 | { |
a18ba4e4 | 13833 | char *rslt = nullptr; |
409873ef | 13834 | |
a18ba4e4 SM |
13835 | if (next_cmd < this_utp->cmd_strings.size ()) |
13836 | { | |
67aa1f3c | 13837 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13838 | next_cmd++; |
13839 | } | |
409873ef SS |
13840 | |
13841 | return rslt; | |
13842 | } | |
13843 | ||
00bf0b85 SS |
13844 | /* Given information about a tracepoint as recorded on a target (which |
13845 | can be either a live system or a trace file), attempt to create an | |
13846 | equivalent GDB tracepoint. This is not a reliable process, since | |
13847 | the target does not necessarily have all the information used when | |
13848 | the tracepoint was originally defined. */ | |
13849 | ||
d9b3f62e | 13850 | struct tracepoint * |
00bf0b85 | 13851 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13852 | { |
f2fc3015 TT |
13853 | const char *addr_str; |
13854 | char small_buf[100]; | |
d9b3f62e | 13855 | struct tracepoint *tp; |
fd9b8c24 | 13856 | |
409873ef | 13857 | if (utp->at_string) |
67aa1f3c | 13858 | addr_str = utp->at_string.get (); |
409873ef SS |
13859 | else |
13860 | { | |
13861 | /* In the absence of a source location, fall back to raw | |
13862 | address. Since there is no way to confirm that the address | |
13863 | means the same thing as when the trace was started, warn the | |
13864 | user. */ | |
3e43a32a MS |
13865 | warning (_("Uploaded tracepoint %d has no " |
13866 | "source location, using raw address"), | |
409873ef | 13867 | utp->number); |
8c042590 | 13868 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13869 | addr_str = small_buf; |
13870 | } | |
13871 | ||
13872 | /* There's not much we can do with a sequence of bytecodes. */ | |
13873 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13874 | warning (_("Uploaded tracepoint %d condition " |
13875 | "has no source form, ignoring it"), | |
409873ef | 13876 | utp->number); |
d5551862 | 13877 | |
264f9890 PA |
13878 | location_spec_up locspec = string_to_location_spec (&addr_str, |
13879 | current_language); | |
8cdf0e15 | 13880 | if (!create_breakpoint (get_current_arch (), |
264f9890 | 13881 | locspec.get (), |
67aa1f3c | 13882 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13883 | false /* force_condition */, |
e7e0cddf | 13884 | 0 /* parse cond/thread */, |
8cdf0e15 | 13885 | 0 /* tempflag */, |
0fb4aa4b | 13886 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13887 | 0 /* Ignore count */, |
13888 | pending_break_support, | |
74421c0b | 13889 | &code_breakpoint_ops, |
8cdf0e15 | 13890 | 0 /* from_tty */, |
84f4c1fe | 13891 | utp->enabled /* enabled */, |
44f238bb PA |
13892 | 0 /* internal */, |
13893 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13894 | return NULL; |
fd9b8c24 | 13895 | |
409873ef | 13896 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13897 | tp = get_tracepoint (tracepoint_count); |
13898 | gdb_assert (tp != NULL); | |
d5551862 | 13899 | |
00bf0b85 SS |
13900 | if (utp->pass > 0) |
13901 | { | |
8c042590 | 13902 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13903 | tp->number); |
00bf0b85 | 13904 | |
409873ef | 13905 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13906 | } |
13907 | ||
409873ef SS |
13908 | /* If we have uploaded versions of the original commands, set up a |
13909 | special-purpose "reader" function and call the usual command line | |
13910 | reader, then pass the result to the breakpoint command-setting | |
13911 | function. */ | |
a18ba4e4 | 13912 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13913 | { |
12973681 | 13914 | counted_command_line cmd_list; |
00bf0b85 | 13915 | |
409873ef | 13916 | this_utp = utp; |
3149d8c1 | 13917 | next_cmd = 0; |
d5551862 | 13918 | |
60b3cef2 | 13919 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13920 | |
c1fc2657 | 13921 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13922 | } |
a18ba4e4 SM |
13923 | else if (!utp->actions.empty () |
13924 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
13925 | warning (_("Uploaded tracepoint %d actions " |
13926 | "have no source form, ignoring them"), | |
409873ef | 13927 | utp->number); |
00bf0b85 | 13928 | |
f196051f | 13929 | /* Copy any status information that might be available. */ |
c1fc2657 | 13930 | tp->hit_count = utp->hit_count; |
f196051f SS |
13931 | tp->traceframe_usage = utp->traceframe_usage; |
13932 | ||
00bf0b85 | 13933 | return tp; |
d9b3f62e | 13934 | } |
00bf0b85 | 13935 | |
1042e4c0 SS |
13936 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13937 | omitted. */ | |
13938 | ||
13939 | static void | |
1d12d88f | 13940 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 13941 | { |
79a45e25 | 13942 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13943 | int num_printed; |
1042e4c0 | 13944 | |
5c458ae8 | 13945 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
13946 | |
13947 | if (num_printed == 0) | |
1042e4c0 | 13948 | { |
e5a67952 | 13949 | if (args == NULL || *args == '\0') |
112e8700 | 13950 | uiout->message ("No tracepoints.\n"); |
d77f58be | 13951 | else |
112e8700 | 13952 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13953 | } |
ad443146 SS |
13954 | |
13955 | default_collect_info (); | |
1042e4c0 SS |
13956 | } |
13957 | ||
4a64f543 | 13958 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13959 | Not supported by all targets. */ |
13960 | static void | |
5fed81ff | 13961 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13962 | { |
13963 | enable_command (args, from_tty); | |
13964 | } | |
13965 | ||
4a64f543 | 13966 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13967 | Not supported by all targets. */ |
13968 | static void | |
5fed81ff | 13969 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13970 | { |
13971 | disable_command (args, from_tty); | |
13972 | } | |
13973 | ||
4a64f543 | 13974 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 13975 | static void |
4495129a | 13976 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 13977 | { |
1042e4c0 SS |
13978 | dont_repeat (); |
13979 | ||
13980 | if (arg == 0) | |
13981 | { | |
13982 | int breaks_to_delete = 0; | |
13983 | ||
13984 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
13985 | Do not delete internal or call-dummy breakpoints, these |
13986 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 13987 | argument. */ |
f6d17b2b | 13988 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 13989 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
13990 | { |
13991 | breaks_to_delete = 1; | |
13992 | break; | |
13993 | } | |
1042e4c0 SS |
13994 | |
13995 | /* Ask user only if there are some breakpoints to delete. */ | |
13996 | if (!from_tty | |
13997 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13998 | { | |
1428b37a | 13999 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14000 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14001 | delete_breakpoint (b); |
1042e4c0 SS |
14002 | } |
14003 | } | |
14004 | else | |
48649e1b | 14005 | map_breakpoint_numbers |
b926417a | 14006 | (arg, [&] (breakpoint *br) |
48649e1b | 14007 | { |
b926417a | 14008 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14009 | }); |
1042e4c0 SS |
14010 | } |
14011 | ||
197f0a60 TT |
14012 | /* Helper function for trace_pass_command. */ |
14013 | ||
14014 | static void | |
d9b3f62e | 14015 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14016 | { |
d9b3f62e | 14017 | tp->pass_count = count; |
76727919 | 14018 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 14019 | if (from_tty) |
6cb06a8c TT |
14020 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
14021 | tp->number, count); | |
197f0a60 TT |
14022 | } |
14023 | ||
1042e4c0 SS |
14024 | /* Set passcount for tracepoint. |
14025 | ||
14026 | First command argument is passcount, second is tracepoint number. | |
14027 | If tracepoint number omitted, apply to most recently defined. | |
14028 | Also accepts special argument "all". */ | |
14029 | ||
14030 | static void | |
0b39b52e | 14031 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14032 | { |
d9b3f62e | 14033 | struct tracepoint *t1; |
0b39b52e | 14034 | ULONGEST count; |
1042e4c0 SS |
14035 | |
14036 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14037 | error (_("passcount command requires an " |
14038 | "argument (count + optional TP num)")); | |
1042e4c0 | 14039 | |
0b39b52e | 14040 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14041 | |
529480d0 | 14042 | args = skip_spaces (args); |
1042e4c0 SS |
14043 | if (*args && strncasecmp (args, "all", 3) == 0) |
14044 | { | |
14045 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14046 | if (*args) |
14047 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14048 | |
f6d17b2b | 14049 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
14050 | { |
14051 | t1 = (struct tracepoint *) b; | |
14052 | trace_pass_set_count (t1, count, from_tty); | |
14053 | } | |
197f0a60 TT |
14054 | } |
14055 | else if (*args == '\0') | |
1042e4c0 | 14056 | { |
5fa1d40e | 14057 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14058 | if (t1) |
197f0a60 TT |
14059 | trace_pass_set_count (t1, count, from_tty); |
14060 | } | |
14061 | else | |
14062 | { | |
bfd28288 PA |
14063 | number_or_range_parser parser (args); |
14064 | while (!parser.finished ()) | |
1042e4c0 | 14065 | { |
bfd28288 | 14066 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14067 | if (t1) |
14068 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14069 | } |
14070 | } | |
1042e4c0 SS |
14071 | } |
14072 | ||
d9b3f62e | 14073 | struct tracepoint * |
1042e4c0 SS |
14074 | get_tracepoint (int num) |
14075 | { | |
f6d17b2b | 14076 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14077 | if (t->number == num) |
d9b3f62e | 14078 | return (struct tracepoint *) t; |
1042e4c0 SS |
14079 | |
14080 | return NULL; | |
14081 | } | |
14082 | ||
d5551862 SS |
14083 | /* Find the tracepoint with the given target-side number (which may be |
14084 | different from the tracepoint number after disconnecting and | |
14085 | reconnecting). */ | |
14086 | ||
d9b3f62e | 14087 | struct tracepoint * |
d5551862 SS |
14088 | get_tracepoint_by_number_on_target (int num) |
14089 | { | |
f6d17b2b | 14090 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14091 | { |
14092 | struct tracepoint *t = (struct tracepoint *) b; | |
14093 | ||
14094 | if (t->number_on_target == num) | |
14095 | return t; | |
14096 | } | |
d5551862 SS |
14097 | |
14098 | return NULL; | |
14099 | } | |
14100 | ||
1042e4c0 | 14101 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14102 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14103 | If the argument is missing, the most recent tracepoint |
14104 | (tracepoint_count) is returned. */ | |
14105 | ||
d9b3f62e | 14106 | struct tracepoint * |
0b39b52e | 14107 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14108 | number_or_range_parser *parser) |
1042e4c0 | 14109 | { |
1042e4c0 | 14110 | int tpnum; |
0b39b52e | 14111 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14112 | |
bfd28288 | 14113 | if (parser != NULL) |
197f0a60 | 14114 | { |
bfd28288 PA |
14115 | gdb_assert (!parser->finished ()); |
14116 | tpnum = parser->get_number (); | |
197f0a60 TT |
14117 | } |
14118 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14119 | tpnum = tracepoint_count; |
1042e4c0 | 14120 | else |
197f0a60 | 14121 | tpnum = get_number (arg); |
1042e4c0 SS |
14122 | |
14123 | if (tpnum <= 0) | |
14124 | { | |
14125 | if (instring && *instring) | |
6cb06a8c TT |
14126 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
14127 | instring); | |
1042e4c0 | 14128 | else |
6cb06a8c | 14129 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
14130 | return NULL; |
14131 | } | |
14132 | ||
f6d17b2b | 14133 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14134 | if (t->number == tpnum) |
d9b3f62e | 14135 | return (struct tracepoint *) t; |
1042e4c0 | 14136 | |
6cb06a8c | 14137 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
14138 | return NULL; |
14139 | } | |
14140 | ||
d9b3f62e | 14141 | void |
04d0163c | 14142 | breakpoint::print_recreate_thread (struct ui_file *fp) const |
d9b3f62e | 14143 | { |
04d0163c TT |
14144 | if (thread != -1) |
14145 | gdb_printf (fp, " thread %d", thread); | |
d9b3f62e | 14146 | |
2ecee236 | 14147 | if (task != -1) |
04d0163c | 14148 | gdb_printf (fp, " task %d", task); |
d9b3f62e | 14149 | |
6cb06a8c | 14150 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
14151 | } |
14152 | ||
6149aea9 PA |
14153 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14154 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14155 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14156 | true. */ |
6149aea9 | 14157 | |
1042e4c0 | 14158 | static void |
4495129a | 14159 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14160 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 14161 | { |
d8de7963 | 14162 | bool any = false; |
6149aea9 | 14163 | int extra_trace_bits = 0; |
1042e4c0 | 14164 | |
6149aea9 PA |
14165 | if (filename == 0 || *filename == 0) |
14166 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14167 | |
14168 | /* See if we have anything to save. */ | |
43892fdf | 14169 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14170 | { |
14171 | /* Skip internal and momentary breakpoints. */ | |
14172 | if (!user_breakpoint_p (tp)) | |
14173 | continue; | |
6149aea9 | 14174 | |
01add95b SM |
14175 | /* If we have a filter, only save the breakpoints it accepts. */ |
14176 | if (filter && !filter (tp)) | |
14177 | continue; | |
6149aea9 | 14178 | |
d8de7963 | 14179 | any = true; |
6149aea9 | 14180 | |
01add95b SM |
14181 | if (is_tracepoint (tp)) |
14182 | { | |
14183 | extra_trace_bits = 1; | |
6149aea9 | 14184 | |
01add95b SM |
14185 | /* We can stop searching. */ |
14186 | break; | |
14187 | } | |
14188 | } | |
6149aea9 PA |
14189 | |
14190 | if (!any) | |
1042e4c0 | 14191 | { |
6149aea9 | 14192 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14193 | return; |
14194 | } | |
14195 | ||
ee0c3293 | 14196 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14197 | |
14198 | stdio_file fp; | |
14199 | ||
ee0c3293 | 14200 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14201 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14202 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14203 | |
6149aea9 | 14204 | if (extra_trace_bits) |
d7e74731 | 14205 | save_trace_state_variables (&fp); |
8bf6485c | 14206 | |
43892fdf | 14207 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14208 | { |
14209 | /* Skip internal and momentary breakpoints. */ | |
14210 | if (!user_breakpoint_p (tp)) | |
14211 | continue; | |
8bf6485c | 14212 | |
01add95b SM |
14213 | /* If we have a filter, only save the breakpoints it accepts. */ |
14214 | if (filter && !filter (tp)) | |
14215 | continue; | |
6149aea9 | 14216 | |
c47614fe | 14217 | tp->print_recreate (&fp); |
1042e4c0 | 14218 | |
01add95b SM |
14219 | /* Note, we can't rely on tp->number for anything, as we can't |
14220 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14221 | instead. */ | |
6149aea9 | 14222 | |
01add95b | 14223 | if (tp->cond_string) |
6f781ee3 | 14224 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 14225 | |
01add95b SM |
14226 | if (tp->ignore_count) |
14227 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 14228 | |
01add95b SM |
14229 | if (tp->type != bp_dprintf && tp->commands) |
14230 | { | |
14231 | fp.puts (" commands\n"); | |
1042e4c0 | 14232 | |
992aeed8 TT |
14233 | ui_out_redirect_pop redir (current_uiout, &fp); |
14234 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
6149aea9 | 14235 | |
01add95b SM |
14236 | fp.puts (" end\n"); |
14237 | } | |
6149aea9 | 14238 | |
01add95b SM |
14239 | if (tp->enable_state == bp_disabled) |
14240 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 14241 | |
01add95b SM |
14242 | /* If this is a multi-location breakpoint, check if the locations |
14243 | should be individually disabled. Watchpoint locations are | |
14244 | special, and not user visible. */ | |
14245 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14246 | { | |
14247 | int n = 1; | |
40cb8ca5 | 14248 | |
01add95b SM |
14249 | for (bp_location *loc : tp->locations ()) |
14250 | { | |
14251 | if (!loc->enabled) | |
14252 | fp.printf ("disable $bpnum.%d\n", n); | |
14253 | ||
14254 | n++; | |
14255 | } | |
14256 | } | |
14257 | } | |
8bf6485c | 14258 | |
e0700ba4 SM |
14259 | if (extra_trace_bits && !default_collect.empty ()) |
14260 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14261 | |
1042e4c0 | 14262 | if (from_tty) |
6cb06a8c | 14263 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14264 | } |
14265 | ||
14266 | /* The `save breakpoints' command. */ | |
14267 | ||
14268 | static void | |
4495129a | 14269 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14270 | { |
14271 | save_breakpoints (args, from_tty, NULL); | |
14272 | } | |
14273 | ||
14274 | /* The `save tracepoints' command. */ | |
14275 | ||
14276 | static void | |
4495129a | 14277 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14278 | { |
14279 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14280 | } |
14281 | ||
c906108c | 14282 | \f |
629500fa KS |
14283 | /* This help string is used to consolidate all the help string for specifying |
14284 | locations used by several commands. */ | |
14285 | ||
264f9890 | 14286 | #define LOCATION_SPEC_HELP_STRING \ |
629500fa KS |
14287 | "Linespecs are colon-separated lists of location parameters, such as\n\ |
14288 | source filename, function name, label name, and line number.\n\ | |
14289 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14290 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14291 | \"factorial.c:fact:the_top\".\n\ | |
14292 | \n\ | |
14293 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14294 | program. Example: To specify the fourth byte past the start function\n\ | |
14295 | \"main\", use \"*main + 4\".\n\ | |
14296 | \n\ | |
14297 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14298 | syntax to specify location parameters.\n\ | |
14299 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14300 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14301 | -function fact -label the_top\".\n\ |
14302 | \n\ | |
14303 | By default, a specified function is matched against the program's\n\ | |
14304 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14305 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14306 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14307 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14308 | specified name as a complete fully-qualified name instead." |
629500fa | 14309 | |
4a64f543 MS |
14310 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14311 | commands. It is defined as a macro to prevent duplication. | |
14312 | COMMAND should be a string constant containing the name of the | |
14313 | command. */ | |
629500fa | 14314 | |
31e2b00f | 14315 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14316 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14317 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14318 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14319 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14320 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14321 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14322 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14323 | below.\n\ | |
14324 | \n\ | |
dc10affe PA |
14325 | With no LOCATION, uses current execution address of the selected\n\ |
14326 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14327 | \n\ |
14328 | THREADNUM is the number from \"info threads\".\n\ | |
14329 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14330 | \n\ |
14331 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14332 | it is invalid for all current locations.\n\ | |
264f9890 | 14333 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14334 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14335 | conditions are different.\n\ | |
31e2b00f AS |
14336 | \n\ |
14337 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14338 | ||
44feb3ce TT |
14339 | /* List of subcommands for "catch". */ |
14340 | static struct cmd_list_element *catch_cmdlist; | |
14341 | ||
14342 | /* List of subcommands for "tcatch". */ | |
14343 | static struct cmd_list_element *tcatch_cmdlist; | |
14344 | ||
9ac4176b | 14345 | void |
a121b7c1 | 14346 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14347 | cmd_func_ftype *func, |
625e8578 | 14348 | completer_ftype *completer, |
44feb3ce TT |
14349 | void *user_data_catch, |
14350 | void *user_data_tcatch) | |
14351 | { | |
14352 | struct cmd_list_element *command; | |
14353 | ||
0450cc4c | 14354 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14355 | &catch_cmdlist); |
5538b03c | 14356 | command->func = func; |
0f8e2034 | 14357 | command->set_context (user_data_catch); |
a96d9b2e | 14358 | set_cmd_completer (command, completer); |
44feb3ce | 14359 | |
0450cc4c | 14360 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14361 | &tcatch_cmdlist); |
5538b03c | 14362 | command->func = func; |
0f8e2034 | 14363 | command->set_context (user_data_tcatch); |
a96d9b2e | 14364 | set_cmd_completer (command, completer); |
44feb3ce TT |
14365 | } |
14366 | ||
d8de7963 AB |
14367 | /* False if any of the breakpoint's locations could be a location where |
14368 | functions have been inlined, true otherwise. */ | |
0574c78f | 14369 | |
d8de7963 | 14370 | static bool |
0574c78f GB |
14371 | is_non_inline_function (struct breakpoint *b) |
14372 | { | |
14373 | /* The shared library event breakpoint is set on the address of a | |
14374 | non-inline function. */ | |
d8de7963 | 14375 | return (b->type == bp_shlib_event); |
0574c78f GB |
14376 | } |
14377 | ||
14378 | /* Nonzero if the specified PC cannot be a location where functions | |
14379 | have been inlined. */ | |
14380 | ||
14381 | int | |
accd0bcd | 14382 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14383 | const target_waitstatus &ws) |
0574c78f | 14384 | { |
43892fdf | 14385 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14386 | { |
14387 | if (!is_non_inline_function (b)) | |
14388 | continue; | |
14389 | ||
40cb8ca5 | 14390 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14391 | { |
14392 | if (!bl->shlib_disabled | |
09ac7c10 | 14393 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14394 | return 1; |
14395 | } | |
14396 | } | |
14397 | ||
14398 | return 0; | |
14399 | } | |
14400 | ||
2f202fde JK |
14401 | /* Remove any references to OBJFILE which is going to be freed. */ |
14402 | ||
14403 | void | |
14404 | breakpoint_free_objfile (struct objfile *objfile) | |
14405 | { | |
48d7020b | 14406 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14407 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14408 | loc->symtab = NULL; |
14409 | } | |
14410 | ||
8bfd80db YQ |
14411 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14412 | ||
14413 | static struct cmd_list_element *enablebreaklist = NULL; | |
14414 | ||
8588b356 SM |
14415 | /* See breakpoint.h. */ |
14416 | ||
14417 | cmd_list_element *commands_cmd_element = nullptr; | |
14418 | ||
6c265988 | 14419 | void _initialize_breakpoint (); |
c906108c | 14420 | void |
6c265988 | 14421 | _initialize_breakpoint () |
c906108c SS |
14422 | { |
14423 | struct cmd_list_element *c; | |
14424 | ||
c90e7d63 SM |
14425 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14426 | "breakpoint"); | |
14427 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14428 | "breakpoint"); | |
14429 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14430 | "breakpoint"); | |
84acb35a | 14431 | |
c906108c SS |
14432 | breakpoint_chain = 0; |
14433 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14434 | before a breakpoint is set. */ | |
14435 | breakpoint_count = 0; | |
14436 | ||
1042e4c0 SS |
14437 | tracepoint_count = 0; |
14438 | ||
1bedd215 AC |
14439 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14440 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14441 | Usage is `ignore N COUNT'.")); | |
c906108c | 14442 | |
8588b356 SM |
14443 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14444 | commands_command, _("\ | |
18da0c51 MG |
14445 | Set commands to be executed when the given breakpoints are hit.\n\ |
14446 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14447 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14448 | (e.g. `5-7').\n\ | |
c906108c SS |
14449 | With no argument, the targeted breakpoint is the last one set.\n\ |
14450 | The commands themselves follow starting on the next line.\n\ | |
14451 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14452 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14453 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14454 | |
b1d4d8d1 TBA |
14455 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14456 | static std::string condition_command_help | |
14457 | = gdb::option::build_help (_("\ | |
1bedd215 | 14458 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14459 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14460 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14461 | \n\ |
14462 | Options:\n\ | |
14463 | %OPTIONS%"), cc_opts); | |
14464 | ||
14465 | c = add_com ("condition", class_breakpoint, condition_command, | |
14466 | condition_command_help.c_str ()); | |
14467 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14468 | |
1bedd215 | 14469 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14470 | Set a temporary breakpoint.\n\ |
c906108c SS |
14471 | Like \"break\" except the breakpoint is only temporary,\n\ |
14472 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14473 | by using \"enable delete\" on the breakpoint number.\n\ |
14474 | \n" | |
14475 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14476 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14477 | |
1bedd215 | 14478 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14479 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14480 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14481 | some target hardware may not have this support.\n\ |
14482 | \n" | |
14483 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14484 | set_cmd_completer (c, location_completer); |
c906108c | 14485 | |
1bedd215 | 14486 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14487 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14488 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14489 | so it will be deleted when hit.\n\ |
14490 | \n" | |
14491 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14492 | set_cmd_completer (c, location_completer); |
c906108c | 14493 | |
3947f654 SM |
14494 | cmd_list_element *enable_cmd |
14495 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14496 | Enable all or some breakpoints.\n\ |
14497 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14498 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14499 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14500 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14501 | With a subcommand you can enable temporarily."), |
3947f654 | 14502 | &enablelist, 1, &cmdlist); |
c906108c | 14503 | |
3947f654 | 14504 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14505 | |
84951ab5 | 14506 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14507 | Enable all or some breakpoints.\n\ |
14508 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14509 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14510 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14511 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14512 | &enablebreaklist, 1, &enablelist); |
c906108c | 14513 | |
1a966eab | 14514 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14515 | Enable some breakpoints for one hit.\n\ |
14516 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14517 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14518 | &enablebreaklist); |
14519 | ||
1a966eab | 14520 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14521 | Enable some breakpoints and delete when hit.\n\ |
14522 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14523 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14524 | &enablebreaklist); |
14525 | ||
816338b5 | 14526 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14527 | Enable some breakpoints for COUNT hits.\n\ |
14528 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14529 | If a breakpoint is hit while enabled in this fashion,\n\ |
14530 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14531 | &enablebreaklist); | |
14532 | ||
1a966eab | 14533 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14534 | Enable some breakpoints and delete when hit.\n\ |
14535 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14536 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14537 | &enablelist); |
14538 | ||
1a966eab | 14539 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14540 | Enable some breakpoints for one hit.\n\ |
14541 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14542 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14543 | &enablelist); |
14544 | ||
14545 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14546 | Enable some breakpoints for COUNT hits.\n\ |
14547 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14548 | If a breakpoint is hit while enabled in this fashion,\n\ |
14549 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14550 | &enablelist); |
14551 | ||
3947f654 SM |
14552 | cmd_list_element *disable_cmd |
14553 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14554 | Disable all or some breakpoints.\n\ |
14555 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14556 | Arguments are breakpoint numbers with spaces in between.\n\ |
14557 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14558 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14559 | &disablelist, 1, &cmdlist); |
14560 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14561 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14562 | |
57b4f16e | 14563 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14564 | Disable all or some breakpoints.\n\ |
14565 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14566 | Arguments are breakpoint numbers with spaces in between.\n\ |
14567 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14568 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14569 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14570 | &disablelist); |
14571 | ||
3947f654 SM |
14572 | cmd_list_element *delete_cmd |
14573 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14574 | Delete all or some breakpoints.\n\ |
14575 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14576 | Arguments are breakpoint numbers with spaces in between.\n\ |
14577 | To delete all breakpoints, give no argument.\n\ | |
14578 | \n\ | |
590042fc | 14579 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14580 | &deletelist, 1, &cmdlist); |
14581 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14582 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14583 | |
57b4f16e | 14584 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14585 | Delete all or some breakpoints or auto-display expressions.\n\ |
14586 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14587 | Arguments are breakpoint numbers with spaces in between.\n\ |
14588 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14589 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14590 | &deletelist); |
14591 | ||
3947f654 SM |
14592 | cmd_list_element *clear_cmd |
14593 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14594 | Clear breakpoint at specified location.\n\ |
14595 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14596 | \n\ |
14597 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14598 | is executing in.\n" |
264f9890 | 14599 | "\n" LOCATION_SPEC_HELP_STRING "\n\n\ |
1bedd215 | 14600 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14601 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14602 | |
3947f654 SM |
14603 | cmd_list_element *break_cmd |
14604 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14605 | Set breakpoint at specified location.\n" |
31e2b00f | 14606 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14607 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14608 | |
3947f654 SM |
14609 | add_com_alias ("b", break_cmd, class_run, 1); |
14610 | add_com_alias ("br", break_cmd, class_run, 1); | |
14611 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14612 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14613 | |
e0f25bd9 SM |
14614 | cmd_list_element *info_breakpoints_cmd |
14615 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14616 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14617 | The \"Type\" column indicates one of:\n\ |
14618 | \tbreakpoint - normal breakpoint\n\ | |
14619 | \twatchpoint - watchpoint\n\ | |
14620 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14621 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14622 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14623 | address and file/line number respectively.\n\ |
14624 | \n\ | |
14625 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14626 | are set to the address of the last breakpoint listed unless the command\n\ |
14627 | is prefixed with \"server \".\n\n\ | |
c906108c | 14628 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14629 | breakpoint set.")); |
c906108c | 14630 | |
e0f25bd9 | 14631 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14632 | |
1a966eab AC |
14633 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14634 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14635 | The \"Type\" column indicates one of:\n\ |
14636 | \tbreakpoint - normal breakpoint\n\ | |
14637 | \twatchpoint - watchpoint\n\ | |
14638 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14639 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14640 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14641 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14642 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14643 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14644 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14645 | address and file/line number respectively.\n\ |
14646 | \n\ | |
14647 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14648 | are set to the address of the last breakpoint listed unless the command\n\ |
14649 | is prefixed with \"server \".\n\n\ | |
c906108c | 14650 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14651 | breakpoint set."), |
c906108c SS |
14652 | &maintenanceinfolist); |
14653 | ||
3b6acaee | 14654 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14655 | Set catchpoints to catch events."), |
2f822da5 | 14656 | &catch_cmdlist, |
3b6acaee | 14657 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14658 | |
3b6acaee | 14659 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14660 | Set temporary catchpoints to catch events."), |
2f822da5 | 14661 | &tcatch_cmdlist, |
3b6acaee | 14662 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14663 | |
a15a5258 AB |
14664 | const auto opts = make_watch_options_def_group (nullptr); |
14665 | ||
14666 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14667 | Set a watchpoint for EXPRESSION.\n\ | |
14668 | Usage: watch [-location] EXPRESSION\n\ | |
14669 | \n\ | |
14670 | Options:\n\ | |
14671 | %OPTIONS%\n\ | |
14672 | \n\ | |
c906108c | 14673 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14674 | an expression changes."), opts); |
14675 | c = add_com ("watch", class_breakpoint, watch_command, | |
14676 | watch_help.c_str ()); | |
14677 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14678 | ||
14679 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14680 | Set a read watchpoint for EXPRESSION.\n\ | |
14681 | Usage: rwatch [-location] EXPRESSION\n\ | |
14682 | \n\ | |
14683 | Options:\n\ | |
14684 | %OPTIONS%\n\ | |
14685 | \n\ | |
14686 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14687 | an expression is read."), opts); | |
14688 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14689 | rwatch_help.c_str ()); | |
14690 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14691 | ||
14692 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14693 | Set an access watchpoint for EXPRESSION.\n\ | |
14694 | Usage: awatch [-location] EXPRESSION\n\ | |
14695 | \n\ | |
14696 | Options:\n\ | |
14697 | %OPTIONS%\n\ | |
14698 | \n\ | |
14699 | An access watchpoint stops execution of your program whenever the value\n\ | |
14700 | of an expression is either read or written."), opts); | |
14701 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14702 | awatch_help.c_str ()); | |
14703 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14704 | |
11db9430 | 14705 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14706 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14707 | |
920d2a44 AC |
14708 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14709 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14710 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14711 | &can_use_hw_watchpoints, _("\ | |
14712 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14713 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14714 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14715 | such is available. (However, any hardware watchpoints that were\n\ | |
14716 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14717 | hardware.)"), |
14718 | NULL, | |
920d2a44 | 14719 | show_can_use_hw_watchpoints, |
85c07804 | 14720 | &setlist, &showlist); |
c906108c SS |
14721 | |
14722 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14723 | |
1042e4c0 SS |
14724 | /* Tracepoint manipulation commands. */ |
14725 | ||
3947f654 SM |
14726 | cmd_list_element *trace_cmd |
14727 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14728 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14729 | \n" |
14730 | BREAK_ARGS_HELP ("trace") "\n\ | |
14731 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14732 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14733 | |
3947f654 SM |
14734 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14735 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14736 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14737 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14738 | |
7a697b8d | 14739 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14740 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14741 | \n" |
14742 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14743 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14744 | set_cmd_completer (c, location_completer); | |
14745 | ||
0fb4aa4b | 14746 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14747 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14748 | \n\ |
14749 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14750 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14751 | or -m MARKER_ID.\n\n\ | |
14752 | If a marker id is specified, probe the marker with that name. With\n\ | |
14753 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14754 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14755 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14756 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14757 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14758 | \n\ | |
14759 | CONDITION is a boolean expression.\n\ | |
264f9890 | 14760 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14761 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14762 | conditions are different.\n\ | |
0fb4aa4b PA |
14763 | \n\ |
14764 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14765 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14766 | set_cmd_completer (c, location_completer); | |
14767 | ||
e0f25bd9 SM |
14768 | cmd_list_element *info_tracepoints_cmd |
14769 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14770 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14771 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14772 | last tracepoint set.")); | |
14773 | ||
e0f25bd9 | 14774 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14775 | |
5e84b7ee SM |
14776 | cmd_list_element *delete_tracepoints_cmd |
14777 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14778 | Delete specified tracepoints.\n\ |
14779 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14780 | No argument means delete all tracepoints."), | |
14781 | &deletelist); | |
5e84b7ee | 14782 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14783 | |
14784 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14785 | Disable specified tracepoints.\n\ | |
14786 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14787 | No argument means disable all tracepoints."), | |
14788 | &disablelist); | |
14789 | deprecate_cmd (c, "disable"); | |
14790 | ||
14791 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14792 | Enable specified tracepoints.\n\ | |
14793 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14794 | No argument means enable all tracepoints."), | |
14795 | &enablelist); | |
14796 | deprecate_cmd (c, "enable"); | |
14797 | ||
14798 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14799 | Set the passcount for a tracepoint.\n\ | |
14800 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14801 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14802 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14803 | ||
0743fc83 TT |
14804 | add_basic_prefix_cmd ("save", class_breakpoint, |
14805 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 14806 | &save_cmdlist, |
0743fc83 | 14807 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
14808 | |
14809 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14810 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14811 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14812 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14813 | session to restore them."), | |
14814 | &save_cmdlist); | |
14815 | set_cmd_completer (c, filename_completer); | |
14816 | ||
3947f654 SM |
14817 | cmd_list_element *save_tracepoints_cmd |
14818 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14819 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14820 | Use the 'source' command in another debug session to restore them."), |
14821 | &save_cmdlist); | |
3947f654 | 14822 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 14823 | |
3947f654 | 14824 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
14825 | deprecate_cmd (c, "save tracepoints"); |
14826 | ||
f54bdb6d SM |
14827 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
14828 | _("\ | |
590042fc | 14829 | Breakpoint specific settings.\n\ |
fa8d40ab | 14830 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14831 | pending breakpoint behavior."), |
f54bdb6d | 14832 | _("\ |
590042fc | 14833 | Breakpoint specific settings.\n\ |
fa8d40ab | 14834 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14835 | pending breakpoint behavior."), |
f54bdb6d SM |
14836 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
14837 | &setlist, &showlist); | |
fa8d40ab | 14838 | |
7915a72c AC |
14839 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14840 | &pending_break_support, _("\ | |
14841 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14842 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14843 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14844 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14845 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14846 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14847 | NULL, |
920d2a44 | 14848 | show_pending_break_support, |
6e1d7d6c AC |
14849 | &breakpoint_set_cmdlist, |
14850 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14851 | |
14852 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14853 | |
14854 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14855 | &automatic_hardware_breakpoints, _("\ | |
14856 | Set automatic usage of hardware breakpoints."), _("\ | |
14857 | Show automatic usage of hardware breakpoints."), _("\ | |
14858 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14859 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14860 | a warning will be emitted for such breakpoints."), | |
14861 | NULL, | |
14862 | show_automatic_hardware_breakpoints, | |
14863 | &breakpoint_set_cmdlist, | |
14864 | &breakpoint_show_cmdlist); | |
74960c60 | 14865 | |
a25a5a45 PA |
14866 | add_setshow_boolean_cmd ("always-inserted", class_support, |
14867 | &always_inserted_mode, _("\ | |
74960c60 VP |
14868 | Set mode for inserting breakpoints."), _("\ |
14869 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
14870 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
14871 | they're created, kept inserted even when execution stops, and removed\n\ | |
14872 | only when the user deletes them. When this mode is off (the default),\n\ | |
14873 | breakpoints are inserted only when execution continues, and removed\n\ | |
14874 | when execution stops."), | |
72d0e2c5 YQ |
14875 | NULL, |
14876 | &show_always_inserted_mode, | |
14877 | &breakpoint_set_cmdlist, | |
14878 | &breakpoint_show_cmdlist); | |
f1310107 | 14879 | |
b775012e LM |
14880 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
14881 | condition_evaluation_enums, | |
14882 | &condition_evaluation_mode_1, _("\ | |
14883 | Set mode of breakpoint condition evaluation."), _("\ | |
14884 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 14885 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
14886 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
14887 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
14888 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
14889 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
14890 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 14891 | be set to \"host\"."), |
b775012e LM |
14892 | &set_condition_evaluation_mode, |
14893 | &show_condition_evaluation_mode, | |
14894 | &breakpoint_set_cmdlist, | |
14895 | &breakpoint_show_cmdlist); | |
14896 | ||
f1310107 TJB |
14897 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
14898 | Set a breakpoint for an address range.\n\ | |
14899 | break-range START-LOCATION, END-LOCATION\n\ | |
14900 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14901 | LINENUM, for that line in the current file,\n\ | |
14902 | FILE:LINENUM, for that line in that file,\n\ | |
14903 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 14904 | or the start of the range\n\ |
f1310107 TJB |
14905 | FUNCTION, for the first line in that function,\n\ |
14906 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14907 | *ADDRESS, for the instruction at that address.\n\ | |
14908 | \n\ | |
14909 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14910 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14911 | range (including START-LOCATION and END-LOCATION).")); | |
14912 | ||
e7e0cddf | 14913 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 14914 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 14915 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa | 14916 | location may be a linespec, explicit, or address location.\n" |
264f9890 | 14917 | "\n" LOCATION_SPEC_HELP_STRING)); |
e7e0cddf SS |
14918 | set_cmd_completer (c, location_completer); |
14919 | ||
14920 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
14921 | dprintf_style_enums, &dprintf_style, _("\ | |
14922 | Set the style of usage for dynamic printf."), _("\ | |
14923 | Show the style of usage for dynamic printf."), _("\ | |
14924 | This setting chooses how GDB will do a dynamic printf.\n\ | |
14925 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
14926 | console, as with the \"printf\" command.\n\ | |
14927 | If the value is \"call\", the print is done by calling a function in your\n\ | |
14928 | program; by default printf(), but you can choose a different function or\n\ | |
14929 | output stream by setting dprintf-function and dprintf-channel."), | |
14930 | update_dprintf_commands, NULL, | |
14931 | &setlist, &showlist); | |
14932 | ||
e7e0cddf SS |
14933 | add_setshow_string_cmd ("dprintf-function", class_support, |
14934 | &dprintf_function, _("\ | |
590042fc PW |
14935 | Set the function to use for dynamic printf."), _("\ |
14936 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14937 | update_dprintf_commands, NULL, |
14938 | &setlist, &showlist); | |
14939 | ||
e7e0cddf SS |
14940 | add_setshow_string_cmd ("dprintf-channel", class_support, |
14941 | &dprintf_channel, _("\ | |
590042fc PW |
14942 | Set the channel to use for dynamic printf."), _("\ |
14943 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14944 | update_dprintf_commands, NULL, |
14945 | &setlist, &showlist); | |
14946 | ||
d3ce09f5 SS |
14947 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
14948 | &disconnected_dprintf, _("\ | |
14949 | Set whether dprintf continues after GDB disconnects."), _("\ | |
14950 | Show whether dprintf continues after GDB disconnects."), _("\ | |
14951 | Use this to let dprintf commands continue to hit and produce output\n\ | |
14952 | even if GDB disconnects or detaches from the target."), | |
14953 | NULL, | |
14954 | NULL, | |
14955 | &setlist, &showlist); | |
14956 | ||
14957 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
14958 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
14959 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
14960 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
14961 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 14962 | |
491144b5 | 14963 | automatic_hardware_breakpoints = true; |
f3b1572e | 14964 | |
c90e7d63 SM |
14965 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
14966 | "breakpoint"); | |
14967 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
14968 | "breakpoint"); | |
c906108c | 14969 | } |