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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" | |
13d03262 | 56 | #include "ui.h" |
4de283e4 TT |
57 | #include "valprint.h" |
58 | #include "jit.h" | |
65d79d4b | 59 | #include "parser-defs.h" |
d322d6d6 | 60 | #include "gdbsupport/gdb_regex.h" |
55aa24fb | 61 | #include "probe.h" |
4de283e4 | 62 | #include "cli/cli-utils.h" |
d55e5aa6 | 63 | #include "stack.h" |
4de283e4 TT |
64 | #include "ax-gdb.h" |
65 | #include "dummy-frame.h" | |
66 | #include "interps.h" | |
268a13a5 | 67 | #include "gdbsupport/format.h" |
cfc31633 | 68 | #include "thread-fsm.h" |
5d5658a1 | 69 | #include "tid-parse.h" |
4de283e4 | 70 | #include "cli/cli-style.h" |
0f8e2034 | 71 | #include "cli/cli-decode.h" |
d3ce09f5 | 72 | |
1042e4c0 | 73 | /* readline include files */ |
073bbbb0 | 74 | #include "readline/tilde.h" |
1042e4c0 SS |
75 | |
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
6dddc817 | 80 | #include "extension.h" |
325fac50 | 81 | #include <algorithm> |
5ed8105e | 82 | #include "progspace-and-thread.h" |
268a13a5 TT |
83 | #include "gdbsupport/array-view.h" |
84 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 85 | |
4a64f543 | 86 | /* Prototypes for local functions. */ |
c906108c | 87 | |
896b6bda | 88 | static void map_breakpoint_numbers (const char *, |
48649e1b | 89 | gdb::function_view<void (breakpoint *)>); |
c906108c | 90 | |
f00aae0f | 91 | static void |
264f9890 PA |
92 | create_sals_from_location_spec_default (location_spec *locspec, |
93 | linespec_result *canonical); | |
983af33b | 94 | |
eee031e2 TT |
95 | static void create_breakpoints_sal (struct gdbarch *, |
96 | struct linespec_result *, | |
97 | gdb::unique_xmalloc_ptr<char>, | |
98 | gdb::unique_xmalloc_ptr<char>, | |
99 | enum bptype, | |
100 | enum bpdisp, int, int, | |
101 | int, | |
eee031e2 | 102 | int, int, int, unsigned); |
983af33b | 103 | |
a6535de1 TT |
104 | static int can_use_hardware_watchpoint |
105 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 106 | |
b713485d | 107 | static void mention (const breakpoint *); |
c906108c | 108 | |
7a3e3265 | 109 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
c906108c | 110 | |
752a2291 PA |
111 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
112 | ||
06edf0c0 PA |
113 | static struct breakpoint * |
114 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
115 | enum bptype type, | |
7ab97995 | 116 | int loc_enabled, int thread); |
06edf0c0 | 117 | |
d8de7963 | 118 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, bool); |
76897487 | 119 | |
a6d9a66e UW |
120 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
121 | CORE_ADDR bpaddr, | |
60270718 AB |
122 | enum bptype bptype, |
123 | struct program_space *pspace); | |
76897487 | 124 | |
d8de7963 AB |
125 | static bool watchpoint_locations_match (const struct bp_location *loc1, |
126 | const struct bp_location *loc2); | |
85d721b8 | 127 | |
d8de7963 AB |
128 | static bool breakpoint_locations_match (const struct bp_location *loc1, |
129 | const struct bp_location *loc2, | |
130 | bool sw_hw_bps_match = false); | |
7f32a4d5 | 131 | |
d8de7963 AB |
132 | static bool breakpoint_location_address_match (struct bp_location *bl, |
133 | const struct address_space *aspace, | |
134 | CORE_ADDR addr); | |
f1310107 | 135 | |
d8de7963 AB |
136 | static bool breakpoint_location_address_range_overlap (struct bp_location *, |
137 | const address_space *, | |
138 | CORE_ADDR, int); | |
d35ae833 | 139 | |
834c0d03 | 140 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 141 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 142 | |
313f3b21 | 143 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 144 | |
a14ed312 | 145 | static int hw_breakpoint_used_count (void); |
c906108c | 146 | |
a1398e0c PA |
147 | static int hw_watchpoint_use_count (struct breakpoint *); |
148 | ||
149 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
150 | enum bptype type, | |
151 | int *other_type_used); | |
c906108c | 152 | |
816338b5 SS |
153 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
154 | int count); | |
c906108c | 155 | |
f431efe5 | 156 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 157 | |
264f9890 | 158 | static std::vector<symtab_and_line> bkpt_probe_decode_location_spec |
5d926615 | 159 | (struct breakpoint *b, |
264f9890 | 160 | location_spec *locspec, |
5d926615 TT |
161 | struct program_space *search_pspace); |
162 | ||
6e14e441 PA |
163 | static bool bl_address_is_meaningful (bp_location *loc); |
164 | ||
d8a77e4c AB |
165 | static int find_loc_num_by_location (const bp_location *loc); |
166 | ||
44702360 PA |
167 | /* update_global_location_list's modes of operation wrt to whether to |
168 | insert locations now. */ | |
169 | enum ugll_insert_mode | |
170 | { | |
171 | /* Don't insert any breakpoint locations into the inferior, only | |
172 | remove already-inserted locations that no longer should be | |
173 | inserted. Functions that delete a breakpoint or breakpoints | |
174 | should specify this mode, so that deleting a breakpoint doesn't | |
175 | have the side effect of inserting the locations of other | |
176 | breakpoints that are marked not-inserted, but should_be_inserted | |
177 | returns true on them. | |
178 | ||
179 | This behavior is useful is situations close to tear-down -- e.g., | |
180 | after an exec, while the target still has execution, but | |
181 | breakpoint shadows of the previous executable image should *NOT* | |
182 | be restored to the new image; or before detaching, where the | |
183 | target still has execution and wants to delete breakpoints from | |
184 | GDB's lists, and all breakpoints had already been removed from | |
185 | the inferior. */ | |
186 | UGLL_DONT_INSERT, | |
187 | ||
a25a5a45 PA |
188 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
189 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
190 | UGLL_MAY_INSERT, |
191 | ||
a25a5a45 PA |
192 | /* Insert locations now, irrespective of |
193 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
194 | stopped right now, and the user did "continue". We need to | |
195 | insert breakpoints _before_ resuming the target, but | |
196 | UGLL_MAY_INSERT wouldn't insert them, because | |
197 | breakpoints_should_be_inserted_now returns false at that point, | |
198 | as no thread is running yet. */ | |
04086b45 | 199 | UGLL_INSERT |
44702360 PA |
200 | }; |
201 | ||
202 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 203 | |
44702360 | 204 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 205 | |
74960c60 | 206 | static void insert_breakpoint_locations (void); |
a5606eee | 207 | |
0b39b52e | 208 | static void trace_pass_command (const char *, int); |
1042e4c0 | 209 | |
558a9d82 YQ |
210 | static void set_tracepoint_count (int num); |
211 | ||
f2478a7e | 212 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 213 | |
d8de7963 AB |
214 | /* Return true if B refers to a static tracepoint set by marker ("-m"), |
215 | zero otherwise. */ | |
983af33b | 216 | |
d8de7963 | 217 | static bool strace_marker_p (struct breakpoint *b); |
0fb4aa4b | 218 | |
264f9890 PA |
219 | static void bkpt_probe_create_sals_from_location_spec |
220 | (location_spec *locspec, | |
03ada39e | 221 | struct linespec_result *canonical); |
264f9890 PA |
222 | static void tracepoint_probe_create_sals_from_location_spec |
223 | (location_spec *locspec, | |
03ada39e | 224 | struct linespec_result *canonical); |
8613a476 | 225 | |
74421c0b | 226 | const struct breakpoint_ops code_breakpoint_ops = |
8613a476 | 227 | { |
264f9890 | 228 | create_sals_from_location_spec_default, |
eee031e2 | 229 | create_breakpoints_sal, |
8613a476 TT |
230 | }; |
231 | ||
55aa24fb | 232 | /* Breakpoints set on probes. */ |
a678887d | 233 | static const struct breakpoint_ops bkpt_probe_breakpoint_ops = |
8613a476 | 234 | { |
264f9890 | 235 | bkpt_probe_create_sals_from_location_spec, |
eee031e2 | 236 | create_breakpoints_sal, |
8613a476 | 237 | }; |
55aa24fb | 238 | |
bac7c5cf | 239 | /* Tracepoints set on probes. */ |
a678887d | 240 | static const struct breakpoint_ops tracepoint_probe_breakpoint_ops = |
8613a476 | 241 | { |
264f9890 | 242 | tracepoint_probe_create_sals_from_location_spec, |
eee031e2 | 243 | create_breakpoints_sal, |
8613a476 | 244 | }; |
bac7c5cf | 245 | |
1c2cbcf1 PA |
246 | /* Implementation of abstract dtors. These must exist to satisfy the |
247 | linker. */ | |
248 | ||
249 | breakpoint::~breakpoint () | |
250 | { | |
251 | } | |
252 | ||
74421c0b | 253 | code_breakpoint::~code_breakpoint () |
1c2cbcf1 PA |
254 | { |
255 | } | |
256 | ||
257 | catchpoint::~catchpoint () | |
258 | { | |
259 | } | |
260 | ||
098f1272 | 261 | /* The structure to be used in regular breakpoints. */ |
74421c0b | 262 | struct ordinary_breakpoint : public code_breakpoint |
098f1272 | 263 | { |
74421c0b | 264 | using code_breakpoint::code_breakpoint; |
73063f51 | 265 | |
7dd8e7ae | 266 | int resources_needed (const struct bp_location *) override; |
7bd86313 | 267 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 268 | void print_mention () const override; |
4d1ae558 | 269 | void print_recreate (struct ui_file *fp) const override; |
098f1272 TT |
270 | }; |
271 | ||
9a71ed14 PA |
272 | /* Internal breakpoints. These typically have a lifetime the same as |
273 | the program, and they end up installed on the breakpoint chain with | |
274 | a negative breakpoint number. They're visible in "maint info | |
275 | breakpoints", but not "info breakpoints". */ | |
74421c0b | 276 | struct internal_breakpoint : public code_breakpoint |
098f1272 | 277 | { |
752a2291 PA |
278 | internal_breakpoint (struct gdbarch *gdbarch, |
279 | enum bptype type, CORE_ADDR address) | |
74421c0b | 280 | : code_breakpoint (gdbarch, type) |
752a2291 PA |
281 | { |
282 | symtab_and_line sal; | |
283 | sal.pc = address; | |
284 | sal.section = find_pc_overlay (sal.pc); | |
285 | sal.pspace = current_program_space; | |
286 | add_location (sal); | |
287 | ||
288 | pspace = current_program_space; | |
289 | disposition = disp_donttouch; | |
290 | } | |
73063f51 | 291 | |
c359fff5 TT |
292 | void re_set () override; |
293 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 294 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 295 | void print_mention () const override; |
098f1272 TT |
296 | }; |
297 | ||
9a71ed14 PA |
298 | /* Momentary breakpoints. These typically have a lifetime of some run |
299 | control command only, are always thread-specific, and have 0 for | |
300 | breakpoint number. I.e., there can be many momentary breakpoints | |
301 | on the breakpoint chain and they all same the same number (zero). | |
302 | They're visible in "maint info breakpoints", but not "info | |
303 | breakpoints". */ | |
74421c0b | 304 | struct momentary_breakpoint : public code_breakpoint |
098f1272 | 305 | { |
7ab97995 PA |
306 | momentary_breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
307 | program_space *pspace_, | |
308 | const struct frame_id &frame_id_, | |
309 | int thread_) | |
74421c0b | 310 | : code_breakpoint (gdbarch_, bptype) |
7ab97995 PA |
311 | { |
312 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
313 | or tail-called one. */ | |
314 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
315 | ||
316 | /* Momentary breakpoints are always thread-specific. */ | |
317 | gdb_assert (thread_ > 0); | |
318 | ||
319 | pspace = pspace_; | |
320 | enable_state = bp_enabled; | |
321 | disposition = disp_donttouch; | |
322 | frame_id = frame_id_; | |
323 | thread = thread_; | |
324 | } | |
73063f51 | 325 | |
1fd30a47 TT |
326 | void re_set () override; |
327 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 328 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 329 | void print_mention () const override; |
098f1272 TT |
330 | }; |
331 | ||
332 | /* DPrintf breakpoints. */ | |
5ad71d67 | 333 | struct dprintf_breakpoint : public ordinary_breakpoint |
098f1272 | 334 | { |
73063f51 TT |
335 | using ordinary_breakpoint::ordinary_breakpoint; |
336 | ||
f293a0b5 TT |
337 | void re_set () override; |
338 | int breakpoint_hit (const struct bp_location *bl, | |
339 | const address_space *aspace, | |
340 | CORE_ADDR bp_addr, | |
341 | const target_waitstatus &ws) override; | |
4d1ae558 | 342 | void print_recreate (struct ui_file *fp) const override; |
f293a0b5 | 343 | void after_condition_true (struct bpstat *bs) override; |
098f1272 TT |
344 | }; |
345 | ||
ec45bb67 TT |
346 | /* Ranged breakpoints. */ |
347 | struct ranged_breakpoint : public ordinary_breakpoint | |
348 | { | |
b925bf21 PA |
349 | explicit ranged_breakpoint (struct gdbarch *gdbarch, |
350 | const symtab_and_line &sal_start, | |
351 | int length, | |
264f9890 PA |
352 | location_spec_up start_locspec, |
353 | location_spec_up end_locspec) | |
73063f51 TT |
354 | : ordinary_breakpoint (gdbarch, bp_hardware_breakpoint) |
355 | { | |
b925bf21 PA |
356 | bp_location *bl = add_location (sal_start); |
357 | bl->length = length; | |
358 | ||
359 | disposition = disp_donttouch; | |
360 | ||
264f9890 PA |
361 | locspec = std::move (start_locspec); |
362 | locspec_range_end = std::move (end_locspec); | |
73063f51 TT |
363 | } |
364 | ||
ec45bb67 TT |
365 | int breakpoint_hit (const struct bp_location *bl, |
366 | const address_space *aspace, | |
367 | CORE_ADDR bp_addr, | |
368 | const target_waitstatus &ws) override; | |
369 | int resources_needed (const struct bp_location *) override; | |
7bd86313 | 370 | enum print_stop_action print_it (const bpstat *bs) const override; |
a67bcaba | 371 | bool print_one (bp_location **) const override; |
ec45bb67 | 372 | void print_one_detail (struct ui_out *) const override; |
b713485d | 373 | void print_mention () const override; |
4d1ae558 | 374 | void print_recreate (struct ui_file *fp) const override; |
ec45bb67 TT |
375 | }; |
376 | ||
6d7a8c56 TT |
377 | /* Static tracepoints with marker (`-m'). */ |
378 | struct static_marker_tracepoint : public tracepoint | |
379 | { | |
73063f51 TT |
380 | using tracepoint::tracepoint; |
381 | ||
264f9890 PA |
382 | std::vector<symtab_and_line> decode_location_spec |
383 | (struct location_spec *locspec, | |
6d7a8c56 TT |
384 | struct program_space *search_pspace) override; |
385 | }; | |
386 | ||
d3ce09f5 SS |
387 | /* The style in which to perform a dynamic printf. This is a user |
388 | option because different output options have different tradeoffs; | |
389 | if GDB does the printing, there is better error handling if there | |
390 | is a problem with any of the arguments, but using an inferior | |
391 | function lets you have special-purpose printers and sending of | |
392 | output to the same place as compiled-in print functions. */ | |
393 | ||
394 | static const char dprintf_style_gdb[] = "gdb"; | |
395 | static const char dprintf_style_call[] = "call"; | |
396 | static const char dprintf_style_agent[] = "agent"; | |
397 | static const char *const dprintf_style_enums[] = { | |
398 | dprintf_style_gdb, | |
399 | dprintf_style_call, | |
400 | dprintf_style_agent, | |
401 | NULL | |
402 | }; | |
403 | static const char *dprintf_style = dprintf_style_gdb; | |
404 | ||
405 | /* The function to use for dynamic printf if the preferred style is to | |
406 | call into the inferior. The value is simply a string that is | |
407 | copied into the command, so it can be anything that GDB can | |
408 | evaluate to a callable address, not necessarily a function name. */ | |
409 | ||
e0700ba4 | 410 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
411 | |
412 | /* The channel to use for dynamic printf if the preferred style is to | |
413 | call into the inferior; if a nonempty string, it will be passed to | |
414 | the call as the first argument, with the format string as the | |
415 | second. As with the dprintf function, this can be anything that | |
416 | GDB knows how to evaluate, so in addition to common choices like | |
417 | "stderr", this could be an app-specific expression like | |
418 | "mystreams[curlogger]". */ | |
419 | ||
e0700ba4 | 420 | static std::string dprintf_channel; |
d3ce09f5 SS |
421 | |
422 | /* True if dprintf commands should continue to operate even if GDB | |
423 | has disconnected. */ | |
491144b5 | 424 | static bool disconnected_dprintf = true; |
d3ce09f5 | 425 | |
5cea2a26 PA |
426 | struct command_line * |
427 | breakpoint_commands (struct breakpoint *b) | |
428 | { | |
d1b0a7bf | 429 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 430 | } |
3daf8fe5 | 431 | |
f3b1572e PA |
432 | /* Flag indicating that a command has proceeded the inferior past the |
433 | current breakpoint. */ | |
434 | ||
491144b5 | 435 | static bool breakpoint_proceeded; |
f3b1572e | 436 | |
956a9fb9 | 437 | const char * |
2cec12e5 AR |
438 | bpdisp_text (enum bpdisp disp) |
439 | { | |
4a64f543 MS |
440 | /* NOTE: the following values are a part of MI protocol and |
441 | represent values of 'disp' field returned when inferior stops at | |
442 | a breakpoint. */ | |
bc043ef3 | 443 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 444 | |
2cec12e5 AR |
445 | return bpdisps[(int) disp]; |
446 | } | |
c906108c | 447 | |
4a64f543 | 448 | /* Prototypes for exported functions. */ |
c906108c | 449 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 450 | if such is available. */ |
c906108c SS |
451 | static int can_use_hw_watchpoints; |
452 | ||
920d2a44 AC |
453 | static void |
454 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
455 | struct cmd_list_element *c, | |
456 | const char *value) | |
457 | { | |
6cb06a8c TT |
458 | gdb_printf (file, |
459 | _("Debugger's willingness to use " | |
460 | "watchpoint hardware is %s.\n"), | |
461 | value); | |
920d2a44 AC |
462 | } |
463 | ||
fa8d40ab JJ |
464 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
465 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 466 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
467 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
468 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
469 | static void |
470 | show_pending_break_support (struct ui_file *file, int from_tty, | |
471 | struct cmd_list_element *c, | |
472 | const char *value) | |
473 | { | |
6cb06a8c TT |
474 | gdb_printf (file, |
475 | _("Debugger's behavior regarding " | |
476 | "pending breakpoints is %s.\n"), | |
477 | value); | |
920d2a44 | 478 | } |
fa8d40ab | 479 | |
491144b5 | 480 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 481 | set with "break" but falling in read-only memory. |
491144b5 | 482 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 483 | use hardware breakpoints. */ |
491144b5 | 484 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
485 | static void |
486 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
487 | struct cmd_list_element *c, | |
488 | const char *value) | |
489 | { | |
6cb06a8c TT |
490 | gdb_printf (file, |
491 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
492 | value); | |
765dc015 VP |
493 | } |
494 | ||
a25a5a45 PA |
495 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
496 | stopped, and immediately inserts any new breakpoints as soon as | |
497 | they're created. If off (default), GDB keeps breakpoints off of | |
498 | the target as long as possible. That is, it delays inserting | |
499 | breakpoints until the next resume, and removes them again when the | |
500 | target fully stops. This is a bit safer in case GDB crashes while | |
501 | processing user input. */ | |
491144b5 | 502 | static bool always_inserted_mode = false; |
72d0e2c5 | 503 | |
33e5cbd6 | 504 | static void |
74960c60 | 505 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 506 | struct cmd_list_element *c, const char *value) |
74960c60 | 507 | { |
6cb06a8c TT |
508 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
509 | value); | |
74960c60 VP |
510 | } |
511 | ||
b57bacec PA |
512 | /* See breakpoint.h. */ |
513 | ||
33e5cbd6 | 514 | int |
a25a5a45 | 515 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 516 | { |
a25a5a45 PA |
517 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
518 | { | |
519 | /* If breakpoints are global, they should be inserted even if no | |
520 | thread under gdb's control is running, or even if there are | |
521 | no threads under GDB's control yet. */ | |
522 | return 1; | |
523 | } | |
5b6d1e4f | 524 | else |
a25a5a45 | 525 | { |
a25a5a45 PA |
526 | if (always_inserted_mode) |
527 | { | |
528 | /* The user wants breakpoints inserted even if all threads | |
529 | are stopped. */ | |
530 | return 1; | |
531 | } | |
532 | ||
5b6d1e4f PA |
533 | for (inferior *inf : all_inferiors ()) |
534 | if (inf->has_execution () | |
535 | && threads_are_executing (inf->process_target ())) | |
536 | return 1; | |
372316f1 PA |
537 | |
538 | /* Don't remove breakpoints yet if, even though all threads are | |
539 | stopped, we still have events to process. */ | |
08036331 | 540 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 541 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 542 | return 1; |
a25a5a45 PA |
543 | } |
544 | return 0; | |
33e5cbd6 | 545 | } |
765dc015 | 546 | |
b775012e LM |
547 | static const char condition_evaluation_both[] = "host or target"; |
548 | ||
549 | /* Modes for breakpoint condition evaluation. */ | |
550 | static const char condition_evaluation_auto[] = "auto"; | |
551 | static const char condition_evaluation_host[] = "host"; | |
552 | static const char condition_evaluation_target[] = "target"; | |
553 | static const char *const condition_evaluation_enums[] = { | |
554 | condition_evaluation_auto, | |
555 | condition_evaluation_host, | |
556 | condition_evaluation_target, | |
557 | NULL | |
558 | }; | |
559 | ||
560 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
561 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
562 | ||
563 | /* Global that we use to display information to the user (gets its value from | |
564 | condition_evaluation_mode_1. */ | |
565 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
566 | ||
567 | /* Translate a condition evaluation mode MODE into either "host" | |
568 | or "target". This is used mostly to translate from "auto" to the | |
569 | real setting that is being used. It returns the translated | |
570 | evaluation mode. */ | |
571 | ||
572 | static const char * | |
573 | translate_condition_evaluation_mode (const char *mode) | |
574 | { | |
575 | if (mode == condition_evaluation_auto) | |
576 | { | |
577 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
578 | return condition_evaluation_target; | |
579 | else | |
580 | return condition_evaluation_host; | |
581 | } | |
582 | else | |
583 | return mode; | |
584 | } | |
585 | ||
586 | /* Discovers what condition_evaluation_auto translates to. */ | |
587 | ||
588 | static const char * | |
589 | breakpoint_condition_evaluation_mode (void) | |
590 | { | |
591 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
592 | } | |
593 | ||
594 | /* Return true if GDB should evaluate breakpoint conditions or false | |
595 | otherwise. */ | |
596 | ||
d8de7963 | 597 | static bool |
b775012e LM |
598 | gdb_evaluates_breakpoint_condition_p (void) |
599 | { | |
600 | const char *mode = breakpoint_condition_evaluation_mode (); | |
601 | ||
602 | return (mode == condition_evaluation_host); | |
603 | } | |
604 | ||
c906108c SS |
605 | /* Are we executing breakpoint commands? */ |
606 | static int executing_breakpoint_commands; | |
607 | ||
c02f5703 MS |
608 | /* Are overlay event breakpoints enabled? */ |
609 | static int overlay_events_enabled; | |
610 | ||
e09342b5 | 611 | /* See description in breakpoint.h. */ |
491144b5 | 612 | bool target_exact_watchpoints = false; |
e09342b5 | 613 | |
c906108c | 614 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 615 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 616 | current breakpoint. */ |
c906108c | 617 | |
5c44784c JM |
618 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
619 | for (B = breakpoint_chain; \ | |
620 | B ? (TMP=B->next, 1): 0; \ | |
621 | B = TMP) | |
c906108c | 622 | |
7cc221ef | 623 | /* Chains of all breakpoints defined. */ |
c906108c | 624 | |
81e6b8eb | 625 | static struct breakpoint *breakpoint_chain; |
c906108c | 626 | |
240edef6 | 627 | /* See breakpoint.h. */ |
43892fdf | 628 | |
240edef6 | 629 | breakpoint_range |
43892fdf SM |
630 | all_breakpoints () |
631 | { | |
632 | return breakpoint_range (breakpoint_chain); | |
633 | } | |
634 | ||
240edef6 | 635 | /* See breakpoint.h. */ |
1428b37a | 636 | |
240edef6 | 637 | breakpoint_safe_range |
1428b37a SM |
638 | all_breakpoints_safe () |
639 | { | |
640 | return breakpoint_safe_range (all_breakpoints ()); | |
641 | } | |
642 | ||
f6d17b2b SM |
643 | /* See breakpoint.h. */ |
644 | ||
645 | tracepoint_range | |
646 | all_tracepoints () | |
647 | { | |
648 | return tracepoint_range (breakpoint_chain); | |
649 | } | |
650 | ||
39ef2f62 | 651 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 652 | |
5d51cd5d | 653 | static std::vector<bp_location *> bp_locations; |
876fa593 | 654 | |
055c879f SM |
655 | /* See breakpoint.h. */ |
656 | ||
657 | const std::vector<bp_location *> & | |
48d7020b SM |
658 | all_bp_locations () |
659 | { | |
660 | return bp_locations; | |
661 | } | |
662 | ||
e0d9a270 SM |
663 | /* Range to iterate over breakpoint locations at a given address. */ |
664 | ||
665 | struct bp_locations_at_addr_range | |
666 | { | |
667 | using iterator = std::vector<bp_location *>::iterator; | |
668 | ||
669 | bp_locations_at_addr_range (CORE_ADDR addr) | |
670 | { | |
671 | struct compare | |
672 | { | |
673 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
674 | { return loc->address < addr_; } | |
675 | ||
676 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
677 | { return addr_ < loc->address; } | |
678 | }; | |
679 | ||
680 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
681 | addr, compare ()); | |
682 | ||
683 | m_begin = it_pair.first; | |
684 | m_end = it_pair.second; | |
685 | } | |
686 | ||
687 | iterator begin () const | |
688 | { return m_begin; } | |
689 | ||
690 | iterator end () const | |
691 | { return m_end; } | |
692 | ||
693 | private: | |
694 | iterator m_begin; | |
695 | iterator m_end; | |
696 | }; | |
697 | ||
698 | /* Return a range to iterate over all breakpoint locations exactly at address | |
699 | ADDR. | |
700 | ||
701 | If it's needed to iterate multiple times on the same range, it's possible | |
702 | to save the range in a local variable and use it multiple times: | |
703 | ||
704 | auto range = all_bp_locations_at_addr (addr); | |
705 | ||
706 | for (bp_location *loc : range) | |
707 | // use loc | |
708 | ||
709 | for (bp_location *loc : range) | |
710 | // use loc | |
711 | ||
712 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
713 | the range's boundaries. Just remember not to change the bp_locations vector | |
714 | in the mean time, as it could make the range's iterators stale. */ | |
715 | ||
716 | static bp_locations_at_addr_range | |
717 | all_bp_locations_at_addr (CORE_ADDR addr) | |
718 | { | |
719 | return bp_locations_at_addr_range (addr); | |
720 | } | |
721 | ||
4a64f543 | 722 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 723 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 724 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 725 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 726 | an address you need to read. */ |
876fa593 | 727 | |
f5336ca5 | 728 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 729 | |
4a64f543 MS |
730 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
731 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
732 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
733 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 734 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 735 | |
f5336ca5 | 736 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 737 | |
4a64f543 | 738 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
739 | from the bp_locations array, but for which a hit may still be |
740 | reported by a target. */ | |
1123588c | 741 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 742 | |
c906108c SS |
743 | /* Number of last breakpoint made. */ |
744 | ||
95a42b64 TT |
745 | static int breakpoint_count; |
746 | ||
86b17b60 PA |
747 | /* The value of `breakpoint_count' before the last command that |
748 | created breakpoints. If the last (break-like) command created more | |
749 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
750 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
751 | static int prev_breakpoint_count; | |
c906108c | 752 | |
1042e4c0 SS |
753 | /* Number of last tracepoint made. */ |
754 | ||
95a42b64 | 755 | static int tracepoint_count; |
1042e4c0 | 756 | |
6149aea9 PA |
757 | static struct cmd_list_element *breakpoint_set_cmdlist; |
758 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 759 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 760 | |
468d015d | 761 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
d8de7963 | 762 | static bool |
468d015d JJ |
763 | breakpoint_enabled (struct breakpoint *b) |
764 | { | |
0d381245 | 765 | return (b->enable_state == bp_enabled); |
468d015d JJ |
766 | } |
767 | ||
c906108c SS |
768 | /* Set breakpoint count to NUM. */ |
769 | ||
95a42b64 | 770 | static void |
fba45db2 | 771 | set_breakpoint_count (int num) |
c906108c | 772 | { |
86b17b60 | 773 | prev_breakpoint_count = breakpoint_count; |
c906108c | 774 | breakpoint_count = num; |
4fa62494 | 775 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
776 | } |
777 | ||
86b17b60 PA |
778 | /* Used by `start_rbreak_breakpoints' below, to record the current |
779 | breakpoint count before "rbreak" creates any breakpoint. */ | |
780 | static int rbreak_start_breakpoint_count; | |
781 | ||
95a42b64 TT |
782 | /* Called at the start an "rbreak" command to record the first |
783 | breakpoint made. */ | |
86b17b60 | 784 | |
c80049d3 | 785 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 786 | { |
86b17b60 | 787 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
788 | } |
789 | ||
790 | /* Called at the end of an "rbreak" command to record the last | |
791 | breakpoint made. */ | |
86b17b60 | 792 | |
c80049d3 | 793 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 794 | { |
86b17b60 | 795 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
796 | } |
797 | ||
4a64f543 | 798 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
799 | |
800 | void | |
fba45db2 | 801 | clear_breakpoint_hit_counts (void) |
c906108c | 802 | { |
43892fdf | 803 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
804 | b->hit_count = 0; |
805 | } | |
806 | ||
c906108c | 807 | \f |
48cb2d85 VP |
808 | /* Return the breakpoint with the specified number, or NULL |
809 | if the number does not refer to an existing breakpoint. */ | |
810 | ||
811 | struct breakpoint * | |
812 | get_breakpoint (int num) | |
813 | { | |
43892fdf | 814 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
815 | if (b->number == num) |
816 | return b; | |
817 | ||
43892fdf | 818 | return nullptr; |
48cb2d85 | 819 | } |
5c44784c | 820 | |
78805ff8 PW |
821 | /* Return TRUE if NUM refer to an existing breakpoint that has |
822 | multiple code locations. */ | |
823 | ||
824 | static bool | |
825 | has_multiple_locations (int num) | |
826 | { | |
827 | for (breakpoint *b : all_breakpoints ()) | |
828 | if (b->number == num) | |
829 | return b->loc != nullptr && b->loc->next != nullptr; | |
830 | ||
831 | return false; | |
832 | } | |
833 | ||
c906108c | 834 | \f |
adc36818 | 835 | |
b775012e LM |
836 | /* Mark locations as "conditions have changed" in case the target supports |
837 | evaluating conditions on its side. */ | |
838 | ||
839 | static void | |
840 | mark_breakpoint_modified (struct breakpoint *b) | |
841 | { | |
b775012e LM |
842 | /* This is only meaningful if the target is |
843 | evaluating conditions and if the user has | |
844 | opted for condition evaluation on the target's | |
845 | side. */ | |
846 | if (gdb_evaluates_breakpoint_condition_p () | |
847 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
848 | return; | |
849 | ||
850 | if (!is_breakpoint (b)) | |
851 | return; | |
852 | ||
40cb8ca5 | 853 | for (bp_location *loc : b->locations ()) |
b775012e LM |
854 | loc->condition_changed = condition_modified; |
855 | } | |
856 | ||
857 | /* Mark location as "conditions have changed" in case the target supports | |
858 | evaluating conditions on its side. */ | |
859 | ||
860 | static void | |
861 | mark_breakpoint_location_modified (struct bp_location *loc) | |
862 | { | |
863 | /* This is only meaningful if the target is | |
864 | evaluating conditions and if the user has | |
865 | opted for condition evaluation on the target's | |
866 | side. */ | |
867 | if (gdb_evaluates_breakpoint_condition_p () | |
868 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
869 | ||
870 | return; | |
871 | ||
872 | if (!is_breakpoint (loc->owner)) | |
873 | return; | |
874 | ||
875 | loc->condition_changed = condition_modified; | |
876 | } | |
877 | ||
878 | /* Sets the condition-evaluation mode using the static global | |
879 | condition_evaluation_mode. */ | |
880 | ||
881 | static void | |
eb4c3f4a | 882 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
883 | struct cmd_list_element *c) |
884 | { | |
b775012e LM |
885 | const char *old_mode, *new_mode; |
886 | ||
887 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
888 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
889 | { | |
890 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
891 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
892 | "Using host evaluation mode instead.")); | |
893 | return; | |
894 | } | |
895 | ||
896 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
897 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
898 | ||
abf1152a JK |
899 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
900 | settings was "auto". */ | |
901 | condition_evaluation_mode = condition_evaluation_mode_1; | |
902 | ||
b775012e LM |
903 | /* Only update the mode if the user picked a different one. */ |
904 | if (new_mode != old_mode) | |
905 | { | |
b775012e LM |
906 | /* If the user switched to a different evaluation mode, we |
907 | need to synch the changes with the target as follows: | |
908 | ||
909 | "host" -> "target": Send all (valid) conditions to the target. | |
910 | "target" -> "host": Remove all the conditions from the target. | |
911 | */ | |
912 | ||
b775012e LM |
913 | if (new_mode == condition_evaluation_target) |
914 | { | |
915 | /* Mark everything modified and synch conditions with the | |
916 | target. */ | |
48d7020b | 917 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 918 | mark_breakpoint_location_modified (loc); |
24b21115 | 919 | } |
b775012e LM |
920 | else |
921 | { | |
922 | /* Manually mark non-duplicate locations to synch conditions | |
923 | with the target. We do this to remove all the conditions the | |
924 | target knows about. */ | |
48d7020b | 925 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
926 | if (is_breakpoint (loc->owner) && loc->inserted) |
927 | loc->needs_update = 1; | |
928 | } | |
929 | ||
930 | /* Do the update. */ | |
44702360 | 931 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
932 | } |
933 | ||
934 | return; | |
935 | } | |
936 | ||
937 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
938 | what "auto" is translating to. */ | |
939 | ||
940 | static void | |
941 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
942 | struct cmd_list_element *c, const char *value) | |
943 | { | |
944 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
945 | gdb_printf (file, |
946 | _("Breakpoint condition evaluation " | |
947 | "mode is %s (currently %s).\n"), | |
948 | value, | |
949 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 950 | else |
6cb06a8c TT |
951 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
952 | value); | |
b775012e LM |
953 | } |
954 | ||
b5fa468f TBA |
955 | /* Parse COND_STRING in the context of LOC and set as the condition |
956 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
957 | the number of LOC within its owner. In case of parsing error, mark | |
958 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
959 | ||
960 | static void | |
961 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
962 | int bp_num, int loc_num) | |
963 | { | |
964 | bool has_junk = false; | |
965 | try | |
966 | { | |
967 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
968 | block_for_pc (loc->address), 0); | |
969 | if (*cond_string != 0) | |
970 | has_junk = true; | |
971 | else | |
972 | { | |
973 | loc->cond = std::move (new_exp); | |
974 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
975 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
976 | "location %d, enabling.\n"), | |
977 | bp_num, loc_num); | |
b5fa468f TBA |
978 | |
979 | loc->disabled_by_cond = false; | |
980 | } | |
981 | } | |
982 | catch (const gdb_exception_error &e) | |
983 | { | |
984 | if (loc->enabled) | |
985 | { | |
986 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
987 | BP_NUM is 0 if the breakpoint is being defined for the first | |
988 | time using the "break ... if ..." command, and non-zero if | |
989 | already defined. */ | |
990 | if (bp_num != 0) | |
991 | warning (_("failed to validate condition at location %d.%d, " | |
992 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
993 | else | |
994 | warning (_("failed to validate condition at location %d, " | |
995 | "disabling:\n %s"), loc_num, e.what ()); | |
996 | } | |
997 | ||
998 | loc->disabled_by_cond = true; | |
999 | } | |
1000 | ||
1001 | if (has_junk) | |
1002 | error (_("Garbage '%s' follows condition"), cond_string); | |
1003 | } | |
1004 | ||
adc36818 | 1005 | void |
7a26bd4d | 1006 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 1007 | int from_tty, bool force) |
adc36818 | 1008 | { |
4c55e970 | 1009 | if (*exp == 0) |
3a5c3e22 | 1010 | { |
6f781ee3 | 1011 | b->cond_string.reset (); |
3a5c3e22 | 1012 | |
4c55e970 | 1013 | if (is_watchpoint (b)) |
98ed24fb | 1014 | gdb::checked_static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
1015 | else |
1016 | { | |
b5fa468f | 1017 | int loc_num = 1; |
40cb8ca5 | 1018 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
1019 | { |
1020 | loc->cond.reset (); | |
b5fa468f | 1021 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
1022 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
1023 | "location %d, enabling.\n"), | |
1024 | b->number, loc_num); | |
b5fa468f TBA |
1025 | loc->disabled_by_cond = false; |
1026 | loc_num++; | |
4c55e970 TBA |
1027 | |
1028 | /* No need to free the condition agent expression | |
1029 | bytecode (if we have one). We will handle this | |
1030 | when we go through update_global_location_list. */ | |
1031 | } | |
1032 | } | |
1e620590 | 1033 | |
adc36818 | 1034 | if (from_tty) |
6cb06a8c | 1035 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
1036 | } |
1037 | else | |
1038 | { | |
adc36818 PM |
1039 | if (is_watchpoint (b)) |
1040 | { | |
699bd4cf | 1041 | innermost_block_tracker tracker; |
78319c15 | 1042 | const char *arg = exp; |
4c55e970 | 1043 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 1044 | if (*arg != 0) |
adc36818 | 1045 | error (_("Junk at end of expression")); |
98ed24fb | 1046 | watchpoint *w = gdb::checked_static_cast<watchpoint *> (b); |
4c55e970 | 1047 | w->cond_exp = std::move (new_exp); |
699bd4cf | 1048 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
1049 | } |
1050 | else | |
1051 | { | |
4c55e970 TBA |
1052 | /* Parse and set condition expressions. We make two passes. |
1053 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
1054 | is valid in at least one location. If so, the condition |
1055 | would be accepted. So we go ahead and set the locations' | |
1056 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
1057 | the error and the condition string will be rejected. |
1058 | This two-pass approach is taken to avoid setting the | |
1059 | state of locations in case of a reject. */ | |
40cb8ca5 | 1060 | for (bp_location *loc : b->locations ()) |
4c55e970 | 1061 | { |
b5fa468f TBA |
1062 | try |
1063 | { | |
1064 | const char *arg = exp; | |
1065 | parse_exp_1 (&arg, loc->address, | |
1066 | block_for_pc (loc->address), 0); | |
1067 | if (*arg != 0) | |
1068 | error (_("Junk at end of expression")); | |
1069 | break; | |
1070 | } | |
1071 | catch (const gdb_exception_error &e) | |
1072 | { | |
1073 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
1074 | be the last loc, abandon (if not forced) or continue |
1075 | (if forced). */ | |
1076 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
1077 | throw; |
1078 | } | |
4c55e970 TBA |
1079 | } |
1080 | ||
b5fa468f | 1081 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 1082 | int loc_num = 1; |
40cb8ca5 SM |
1083 | for (bp_location *loc : b->locations ()) |
1084 | { | |
1085 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
1086 | loc_num++; | |
1087 | } | |
adc36818 | 1088 | } |
1e620590 TBA |
1089 | |
1090 | /* We know that the new condition parsed successfully. The | |
1091 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 1092 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 1093 | b->condition_not_parsed = 0; |
adc36818 | 1094 | } |
b775012e LM |
1095 | mark_breakpoint_modified (b); |
1096 | ||
76727919 | 1097 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
1098 | } |
1099 | ||
79aabb73 TBA |
1100 | /* See breakpoint.h. */ |
1101 | ||
1102 | void | |
1103 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
1104 | bool force) | |
1105 | { | |
43892fdf | 1106 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
1107 | if (b->number == bpnum) |
1108 | { | |
1109 | /* Check if this breakpoint has a "stop" method implemented in an | |
1110 | extension language. This method and conditions entered into GDB | |
1111 | from the CLI are mutually exclusive. */ | |
1112 | const struct extension_language_defn *extlang | |
1113 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1114 | ||
1115 | if (extlang != NULL) | |
1116 | { | |
1117 | error (_("Only one stop condition allowed. There is currently" | |
1118 | " a %s stop condition defined for this breakpoint."), | |
1119 | ext_lang_capitalized_name (extlang)); | |
1120 | } | |
1121 | set_breakpoint_condition (b, exp, from_tty, force); | |
1122 | ||
1123 | if (is_breakpoint (b)) | |
1124 | update_global_location_list (UGLL_MAY_INSERT); | |
1125 | ||
1126 | return; | |
1127 | } | |
1128 | ||
1129 | error (_("No breakpoint number %d."), bpnum); | |
1130 | } | |
1131 | ||
b1d4d8d1 TBA |
1132 | /* The options for the "condition" command. */ |
1133 | ||
1134 | struct condition_command_opts | |
1135 | { | |
1136 | /* For "-force". */ | |
1137 | bool force_condition = false; | |
1138 | }; | |
1139 | ||
1140 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1141 | ||
1142 | gdb::option::flag_option_def<condition_command_opts> { | |
1143 | "force", | |
1144 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1145 | N_("Set the condition even if it is invalid for all current locations."), | |
1146 | }, | |
1147 | ||
1148 | }; | |
1149 | ||
1150 | /* Create an option_def_group for the "condition" options, with | |
1151 | CC_OPTS as context. */ | |
1152 | ||
1153 | static inline gdb::option::option_def_group | |
1154 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1155 | { | |
1156 | return {{condition_command_option_defs}, cc_opts}; | |
1157 | } | |
1158 | ||
d55637df TT |
1159 | /* Completion for the "condition" command. */ |
1160 | ||
eb3ff9a5 | 1161 | static void |
6f937416 | 1162 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1163 | completion_tracker &tracker, |
b1d4d8d1 | 1164 | const char *text, const char * /*word*/) |
d55637df | 1165 | { |
b1d4d8d1 TBA |
1166 | bool has_no_arguments = (*text == '\0'); |
1167 | condition_command_opts cc_opts; | |
1168 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1169 | if (gdb::option::complete_options | |
1170 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1171 | return; | |
d55637df | 1172 | |
f1735a53 | 1173 | text = skip_spaces (text); |
b1d4d8d1 | 1174 | const char *space = skip_to_space (text); |
d55637df TT |
1175 | if (*space == '\0') |
1176 | { | |
1177 | int len; | |
d55637df TT |
1178 | |
1179 | if (text[0] == '$') | |
1180 | { | |
b1d4d8d1 | 1181 | tracker.advance_custom_word_point_by (1); |
d55637df | 1182 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1183 | if (!isdigit (text[1])) |
1184 | complete_internalvar (tracker, &text[1]); | |
1185 | return; | |
d55637df TT |
1186 | } |
1187 | ||
b1d4d8d1 TBA |
1188 | /* Suggest the "-force" flag if no arguments are given. If |
1189 | arguments were passed, they either already include the flag, | |
1190 | or we are beyond the point of suggesting it because it's | |
1191 | positionally the first argument. */ | |
1192 | if (has_no_arguments) | |
1193 | gdb::option::complete_on_all_options (tracker, group); | |
1194 | ||
d55637df TT |
1195 | /* We're completing the breakpoint number. */ |
1196 | len = strlen (text); | |
1197 | ||
43892fdf | 1198 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1199 | { |
1200 | char number[50]; | |
1201 | ||
1202 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1203 | ||
1204 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1205 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1206 | } |
d55637df | 1207 | |
eb3ff9a5 | 1208 | return; |
d55637df TT |
1209 | } |
1210 | ||
b1d4d8d1 TBA |
1211 | /* We're completing the expression part. Skip the breakpoint num. */ |
1212 | const char *exp_start = skip_spaces (space); | |
1213 | tracker.advance_custom_word_point_by (exp_start - text); | |
1214 | text = exp_start; | |
1215 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1216 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1217 | } |
1218 | ||
c906108c SS |
1219 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1220 | ||
1221 | static void | |
0b39b52e | 1222 | condition_command (const char *arg, int from_tty) |
c906108c | 1223 | { |
0b39b52e | 1224 | const char *p; |
52f0bd74 | 1225 | int bnum; |
c906108c SS |
1226 | |
1227 | if (arg == 0) | |
e2e0b3e5 | 1228 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1229 | |
1230 | p = arg; | |
733d554a TBA |
1231 | |
1232 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1233 | condition_command_opts cc_opts; |
1234 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1235 | gdb::option::process_options | |
1236 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1237 | |
c906108c | 1238 | bnum = get_number (&p); |
5c44784c | 1239 | if (bnum == 0) |
8a3fe4f8 | 1240 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1241 | |
79aabb73 | 1242 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1243 | } |
1244 | ||
a7bdde9e VP |
1245 | /* Check that COMMAND do not contain commands that are suitable |
1246 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1247 | Throw if any such commands is found. */ |
1248 | ||
a7bdde9e VP |
1249 | static void |
1250 | check_no_tracepoint_commands (struct command_line *commands) | |
1251 | { | |
1252 | struct command_line *c; | |
cc59ec59 | 1253 | |
a7bdde9e VP |
1254 | for (c = commands; c; c = c->next) |
1255 | { | |
a7bdde9e | 1256 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1257 | error (_("The 'while-stepping' command can " |
1258 | "only be used for tracepoints")); | |
a7bdde9e | 1259 | |
12973681 TT |
1260 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1261 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1262 | |
1263 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1264 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1265 | command directly. */ |
1266 | if (strstr (c->line, "collect ") == c->line) | |
1267 | error (_("The 'collect' command can only be used for tracepoints")); | |
1268 | ||
51661e93 VP |
1269 | if (strstr (c->line, "teval ") == c->line) |
1270 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1271 | } |
1272 | } | |
1273 | ||
098f1272 | 1274 | struct longjmp_breakpoint : public momentary_breakpoint |
3b0871f4 | 1275 | { |
73063f51 TT |
1276 | using momentary_breakpoint::momentary_breakpoint; |
1277 | ||
c1fc2657 | 1278 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1279 | }; |
1280 | ||
d77f58be SS |
1281 | /* Encapsulate tests for different types of tracepoints. */ |
1282 | ||
3b0871f4 SM |
1283 | static bool |
1284 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1285 | { |
1286 | return (type == bp_tracepoint | |
1287 | || type == bp_fast_tracepoint | |
7b572efb TT |
1288 | || type == bp_static_tracepoint |
1289 | || type == bp_static_marker_tracepoint); | |
d9b3f62e PA |
1290 | } |
1291 | ||
f2478a7e SM |
1292 | /* See breakpoint.h. */ |
1293 | ||
1294 | bool | |
d77f58be | 1295 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1296 | { |
d9b3f62e | 1297 | return is_tracepoint_type (b->type); |
a7bdde9e | 1298 | } |
d9b3f62e | 1299 | |
a5e364af SM |
1300 | /* Factory function to create an appropriate instance of breakpoint given |
1301 | TYPE. */ | |
1302 | ||
3b003a61 | 1303 | template<typename... Arg> |
74421c0b | 1304 | static std::unique_ptr<code_breakpoint> |
3b003a61 PA |
1305 | new_breakpoint_from_type (struct gdbarch *gdbarch, bptype type, |
1306 | Arg&&... args) | |
a5e364af | 1307 | { |
74421c0b | 1308 | code_breakpoint *b; |
a5e364af | 1309 | |
098f1272 TT |
1310 | switch (type) |
1311 | { | |
1312 | case bp_breakpoint: | |
1313 | case bp_hardware_breakpoint: | |
3b003a61 PA |
1314 | b = new ordinary_breakpoint (gdbarch, type, |
1315 | std::forward<Arg> (args)...); | |
098f1272 TT |
1316 | break; |
1317 | ||
1318 | case bp_fast_tracepoint: | |
1319 | case bp_static_tracepoint: | |
1320 | case bp_tracepoint: | |
3b003a61 PA |
1321 | b = new tracepoint (gdbarch, type, |
1322 | std::forward<Arg> (args)...); | |
098f1272 TT |
1323 | break; |
1324 | ||
6d7a8c56 | 1325 | case bp_static_marker_tracepoint: |
3b003a61 PA |
1326 | b = new static_marker_tracepoint (gdbarch, type, |
1327 | std::forward<Arg> (args)...); | |
6d7a8c56 TT |
1328 | break; |
1329 | ||
098f1272 | 1330 | case bp_dprintf: |
3b003a61 PA |
1331 | b = new dprintf_breakpoint (gdbarch, type, |
1332 | std::forward<Arg> (args)...); | |
098f1272 TT |
1333 | break; |
1334 | ||
098f1272 TT |
1335 | default: |
1336 | gdb_assert_not_reached ("invalid type"); | |
1337 | } | |
a5e364af | 1338 | |
74421c0b | 1339 | return std::unique_ptr<code_breakpoint> (b); |
a5e364af SM |
1340 | } |
1341 | ||
e5dd4106 | 1342 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1343 | breakpoint. This function will throw an exception if a problem is |
1344 | found. */ | |
48cb2d85 | 1345 | |
95a42b64 TT |
1346 | static void |
1347 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1348 | struct command_line *commands) | |
48cb2d85 | 1349 | { |
d77f58be | 1350 | if (is_tracepoint (b)) |
a7bdde9e | 1351 | { |
c9a6ce02 | 1352 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1353 | struct command_line *c; |
1354 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1355 | |
1356 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1357 | might have included a while-stepping action, while the new |
1358 | ones might not. */ | |
c9a6ce02 PA |
1359 | t->step_count = 0; |
1360 | ||
1361 | /* We need to verify that each top-level element of commands is | |
1362 | valid for tracepoints, that there's at most one | |
1363 | while-stepping element, and that the while-stepping's body | |
1364 | has valid tracing commands excluding nested while-stepping. | |
1365 | We also need to validate the tracepoint action line in the | |
1366 | context of the tracepoint --- validate_actionline actually | |
1367 | has side effects, like setting the tracepoint's | |
1368 | while-stepping STEP_COUNT, in addition to checking if the | |
1369 | collect/teval actions parse and make sense in the | |
1370 | tracepoint's context. */ | |
a7bdde9e VP |
1371 | for (c = commands; c; c = c->next) |
1372 | { | |
a7bdde9e VP |
1373 | if (c->control_type == while_stepping_control) |
1374 | { | |
1375 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1376 | error (_("The 'while-stepping' command " |
1377 | "cannot be used for fast tracepoint")); | |
7b572efb TT |
1378 | else if (b->type == bp_static_tracepoint |
1379 | || b->type == bp_static_marker_tracepoint) | |
3e43a32a MS |
1380 | error (_("The 'while-stepping' command " |
1381 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1382 | |
1383 | if (while_stepping) | |
3e43a32a MS |
1384 | error (_("The 'while-stepping' command " |
1385 | "can be used only once")); | |
a7bdde9e VP |
1386 | else |
1387 | while_stepping = c; | |
1388 | } | |
c9a6ce02 PA |
1389 | |
1390 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1391 | } |
1392 | if (while_stepping) | |
1393 | { | |
1394 | struct command_line *c2; | |
1395 | ||
12973681 TT |
1396 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1397 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1398 | for (; c2; c2 = c2->next) |
1399 | { | |
a7bdde9e VP |
1400 | if (c2->control_type == while_stepping_control) |
1401 | error (_("The 'while-stepping' command cannot be nested")); | |
1402 | } | |
1403 | } | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | check_no_tracepoint_commands (commands); | |
1408 | } | |
95a42b64 TT |
1409 | } |
1410 | ||
0fb4aa4b PA |
1411 | /* Return a vector of all the static tracepoints set at ADDR. The |
1412 | caller is responsible for releasing the vector. */ | |
1413 | ||
f51e0e20 | 1414 | std::vector<breakpoint *> |
0fb4aa4b PA |
1415 | static_tracepoints_here (CORE_ADDR addr) |
1416 | { | |
f51e0e20 | 1417 | std::vector<breakpoint *> found; |
0fb4aa4b | 1418 | |
43892fdf | 1419 | for (breakpoint *b : all_breakpoints ()) |
7b572efb TT |
1420 | if (b->type == bp_static_tracepoint |
1421 | || b->type == bp_static_marker_tracepoint) | |
0fb4aa4b | 1422 | { |
40cb8ca5 | 1423 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1424 | if (loc->address == addr) |
f51e0e20 | 1425 | found.push_back (b); |
0fb4aa4b PA |
1426 | } |
1427 | ||
1428 | return found; | |
1429 | } | |
1430 | ||
95a42b64 | 1431 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1432 | validate that only allowed commands are included. */ |
95a42b64 TT |
1433 | |
1434 | void | |
4a64f543 | 1435 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1436 | counted_command_line &&commands) |
95a42b64 | 1437 | { |
93921405 | 1438 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1439 | |
d1b0a7bf | 1440 | b->commands = std::move (commands); |
76727919 | 1441 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1442 | } |
1443 | ||
45a43567 TT |
1444 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1445 | is not the same as the "silent" that may appear in the breakpoint's | |
1446 | commands. */ | |
1447 | ||
1448 | void | |
1449 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1450 | { | |
1451 | int old_silent = b->silent; | |
1452 | ||
1453 | b->silent = silent; | |
1454 | if (old_silent != silent) | |
76727919 | 1455 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1456 | } |
1457 | ||
0a9ccb9d | 1458 | /* See breakpoint.h. */ |
45a43567 TT |
1459 | |
1460 | void | |
1461 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1462 | { | |
0a9ccb9d AB |
1463 | /* It is invalid to set the thread field to anything other than -1 (which |
1464 | means no thread restriction) if a task restriction is already in | |
1465 | place. */ | |
2ecee236 | 1466 | gdb_assert (thread == -1 || b->task == -1); |
0a9ccb9d | 1467 | |
45a43567 TT |
1468 | int old_thread = b->thread; |
1469 | ||
1470 | b->thread = thread; | |
1471 | if (old_thread != thread) | |
76727919 | 1472 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1473 | } |
1474 | ||
0a9ccb9d | 1475 | /* See breakpoint.h. */ |
45a43567 TT |
1476 | |
1477 | void | |
1478 | breakpoint_set_task (struct breakpoint *b, int task) | |
1479 | { | |
2ecee236 | 1480 | /* It is invalid to set the task field to anything other than -1 (which |
0a9ccb9d AB |
1481 | means no task restriction) if a thread restriction is already in |
1482 | place. */ | |
2ecee236 | 1483 | gdb_assert (task == -1 || b->thread == -1); |
0a9ccb9d | 1484 | |
45a43567 TT |
1485 | int old_task = b->task; |
1486 | ||
1487 | b->task = task; | |
1488 | if (old_task != task) | |
76727919 | 1489 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1490 | } |
1491 | ||
95a42b64 | 1492 | static void |
896b6bda | 1493 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1494 | struct command_line *control) |
95a42b64 | 1495 | { |
d1b0a7bf | 1496 | counted_command_line cmd; |
999700cd PW |
1497 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1498 | NULL after the call to read_command_lines if the user provides an empty | |
1499 | list of command by just typing "end". */ | |
1500 | bool cmd_read = false; | |
95a42b64 | 1501 | |
896b6bda PA |
1502 | std::string new_arg; |
1503 | ||
95a42b64 TT |
1504 | if (arg == NULL || !*arg) |
1505 | { | |
da1df1db | 1506 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1507 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1508 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1509 | breakpoint_count); | |
95a42b64 | 1510 | else if (breakpoint_count > 0) |
896b6bda | 1511 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1512 | } |
da1df1db TBA |
1513 | else |
1514 | { | |
1515 | /* Create a copy of ARG. This is needed because the "commands" | |
1516 | command may be coming from a script. In that case, the read | |
1517 | line buffer is going to be overwritten in the lambda of | |
1518 | 'map_breakpoint_numbers' below when reading the next line | |
1519 | before we are are done parsing the breakpoint numbers. */ | |
1520 | new_arg = arg; | |
1521 | } | |
1522 | arg = new_arg.c_str (); | |
48649e1b TT |
1523 | |
1524 | map_breakpoint_numbers | |
1525 | (arg, [&] (breakpoint *b) | |
1526 | { | |
999700cd | 1527 | if (!cmd_read) |
48649e1b | 1528 | { |
999700cd | 1529 | gdb_assert (cmd == NULL); |
48649e1b | 1530 | if (control != NULL) |
12973681 | 1531 | cmd = control->body_list_0; |
48649e1b TT |
1532 | else |
1533 | { | |
81b1e71c TT |
1534 | std::string str |
1535 | = string_printf (_("Type commands for breakpoint(s) " | |
1536 | "%s, one per line."), | |
1537 | arg); | |
48649e1b | 1538 | |
60b3cef2 TT |
1539 | auto do_validate = [=] (const char *line) |
1540 | { | |
1541 | validate_actionline (line, b); | |
1542 | }; | |
1543 | gdb::function_view<void (const char *)> validator; | |
1544 | if (is_tracepoint (b)) | |
1545 | validator = do_validate; | |
1546 | ||
1547 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1548 | } |
999700cd | 1549 | cmd_read = true; |
48649e1b TT |
1550 | } |
1551 | ||
1552 | /* If a breakpoint was on the list more than once, we don't need to | |
1553 | do anything. */ | |
1554 | if (b->commands != cmd) | |
1555 | { | |
d1b0a7bf | 1556 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1557 | b->commands = cmd; |
76727919 | 1558 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1559 | } |
1560 | }); | |
95a42b64 TT |
1561 | } |
1562 | ||
1563 | static void | |
0b39b52e | 1564 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1565 | { |
1566 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1567 | } |
40c03ae8 EZ |
1568 | |
1569 | /* Like commands_command, but instead of reading the commands from | |
1570 | input stream, takes them from an already parsed command structure. | |
1571 | ||
1572 | This is used by cli-script.c to DTRT with breakpoint commands | |
1573 | that are part of if and while bodies. */ | |
1574 | enum command_control_type | |
896b6bda | 1575 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1576 | { |
95a42b64 TT |
1577 | commands_command_1 (arg, 0, cmd); |
1578 | return simple_control; | |
40c03ae8 | 1579 | } |
876fa593 | 1580 | |
d8de7963 | 1581 | /* Return true if BL->TARGET_INFO contains valid information. */ |
876fa593 | 1582 | |
d8de7963 | 1583 | static bool |
876fa593 JK |
1584 | bp_location_has_shadow (struct bp_location *bl) |
1585 | { | |
1586 | if (bl->loc_type != bp_loc_software_breakpoint) | |
d8de7963 | 1587 | return false; |
876fa593 | 1588 | if (!bl->inserted) |
d8de7963 | 1589 | return false; |
876fa593 | 1590 | if (bl->target_info.shadow_len == 0) |
e5dd4106 | 1591 | /* BL isn't valid, or doesn't shadow memory. */ |
d8de7963 AB |
1592 | return false; |
1593 | return true; | |
876fa593 JK |
1594 | } |
1595 | ||
9d497a19 PA |
1596 | /* Update BUF, which is LEN bytes read from the target address |
1597 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1598 | contents. | |
1599 | ||
1600 | If READBUF is not NULL, this buffer must not overlap with the of | |
1601 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1602 | failed assertion internal error will be raised. */ | |
1603 | ||
1604 | static void | |
1605 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1606 | const gdb_byte *writebuf_org, | |
1607 | ULONGEST memaddr, LONGEST len, | |
1608 | struct bp_target_info *target_info, | |
1609 | struct gdbarch *gdbarch) | |
1610 | { | |
1611 | /* Now do full processing of the found relevant range of elements. */ | |
1612 | CORE_ADDR bp_addr = 0; | |
1613 | int bp_size = 0; | |
1614 | int bptoffset = 0; | |
1615 | ||
1616 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1617 | current_program_space->aspace, 0)) | |
1618 | { | |
1619 | /* The breakpoint is inserted in a different address space. */ | |
1620 | return; | |
1621 | } | |
1622 | ||
1623 | /* Addresses and length of the part of the breakpoint that | |
1624 | we need to copy. */ | |
1625 | bp_addr = target_info->placed_address; | |
1626 | bp_size = target_info->shadow_len; | |
1627 | ||
1628 | if (bp_addr + bp_size <= memaddr) | |
1629 | { | |
1630 | /* The breakpoint is entirely before the chunk of memory we are | |
1631 | reading. */ | |
1632 | return; | |
1633 | } | |
1634 | ||
1635 | if (bp_addr >= memaddr + len) | |
1636 | { | |
1637 | /* The breakpoint is entirely after the chunk of memory we are | |
1638 | reading. */ | |
1639 | return; | |
1640 | } | |
1641 | ||
1642 | /* Offset within shadow_contents. */ | |
1643 | if (bp_addr < memaddr) | |
1644 | { | |
1645 | /* Only copy the second part of the breakpoint. */ | |
1646 | bp_size -= memaddr - bp_addr; | |
1647 | bptoffset = memaddr - bp_addr; | |
1648 | bp_addr = memaddr; | |
1649 | } | |
1650 | ||
1651 | if (bp_addr + bp_size > memaddr + len) | |
1652 | { | |
1653 | /* Only copy the first part of the breakpoint. */ | |
1654 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1655 | } | |
1656 | ||
1657 | if (readbuf != NULL) | |
1658 | { | |
1659 | /* Verify that the readbuf buffer does not overlap with the | |
1660 | shadow_contents buffer. */ | |
1661 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1662 | || readbuf >= (target_info->shadow_contents | |
1663 | + target_info->shadow_len)); | |
1664 | ||
1665 | /* Update the read buffer with this inserted breakpoint's | |
1666 | shadow. */ | |
1667 | memcpy (readbuf + bp_addr - memaddr, | |
1668 | target_info->shadow_contents + bptoffset, bp_size); | |
1669 | } | |
1670 | else | |
1671 | { | |
1672 | const unsigned char *bp; | |
0d5ed153 MR |
1673 | CORE_ADDR addr = target_info->reqstd_address; |
1674 | int placed_size; | |
9d497a19 PA |
1675 | |
1676 | /* Update the shadow with what we want to write to memory. */ | |
1677 | memcpy (target_info->shadow_contents + bptoffset, | |
1678 | writebuf_org + bp_addr - memaddr, bp_size); | |
1679 | ||
1680 | /* Determine appropriate breakpoint contents and size for this | |
1681 | address. */ | |
0d5ed153 | 1682 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1683 | |
1684 | /* Update the final write buffer with this inserted | |
1685 | breakpoint's INSN. */ | |
1686 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1687 | } | |
1688 | } | |
1689 | ||
8defab1a | 1690 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1691 | by replacing any memory breakpoints with their shadowed contents. |
1692 | ||
35c63cd8 JB |
1693 | If READBUF is not NULL, this buffer must not overlap with any of |
1694 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1695 | a failed assertion internal error will be raised. | |
1696 | ||
876fa593 | 1697 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1698 | bl->address - bp_locations_placed_address_before_address_max |
1699 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1700 | The range we were requested to resolve shadows for is: |
1701 | memaddr ... memaddr + len | |
1702 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1703 | memaddr + len <= (bl->address |
f5336ca5 | 1704 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1705 | and: |
f5336ca5 | 1706 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1707 | |
8defab1a | 1708 | void |
f0ba3972 PA |
1709 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1710 | const gdb_byte *writebuf_org, | |
1711 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1712 | { |
4a64f543 MS |
1713 | /* Left boundary, right boundary and median element of our binary |
1714 | search. */ | |
876fa593 JK |
1715 | unsigned bc_l, bc_r, bc; |
1716 | ||
4a64f543 MS |
1717 | /* Find BC_L which is a leftmost element which may affect BUF |
1718 | content. It is safe to report lower value but a failure to | |
1719 | report higher one. */ | |
876fa593 JK |
1720 | |
1721 | bc_l = 0; | |
5d51cd5d | 1722 | bc_r = bp_locations.size (); |
876fa593 JK |
1723 | while (bc_l + 1 < bc_r) |
1724 | { | |
35df4500 | 1725 | struct bp_location *bl; |
876fa593 JK |
1726 | |
1727 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1728 | bl = bp_locations[bc]; |
876fa593 | 1729 | |
4a64f543 MS |
1730 | /* Check first BL->ADDRESS will not overflow due to the added |
1731 | constant. Then advance the left boundary only if we are sure | |
1732 | the BC element can in no way affect the BUF content (MEMADDR | |
1733 | to MEMADDR + LEN range). | |
876fa593 | 1734 | |
f5336ca5 | 1735 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1736 | offset so that we cannot miss a breakpoint with its shadow |
1737 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1738 | |
f5336ca5 | 1739 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1740 | >= bl->address) |
f5336ca5 | 1741 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1742 | <= memaddr)) |
876fa593 JK |
1743 | bc_l = bc; |
1744 | else | |
1745 | bc_r = bc; | |
1746 | } | |
1747 | ||
128070bb PA |
1748 | /* Due to the binary search above, we need to make sure we pick the |
1749 | first location that's at BC_L's address. E.g., if there are | |
1750 | multiple locations at the same address, BC_L may end up pointing | |
1751 | at a duplicate location, and miss the "master"/"inserted" | |
1752 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1753 | B: | |
1754 | ||
1755 | L1@A, L2@A, L3@B, ... | |
1756 | ||
1757 | BC_L could end up pointing at location L2, while the "master" | |
1758 | location could be L1. Since the `loc->inserted' flag is only set | |
1759 | on "master" locations, we'd forget to restore the shadow of L1 | |
1760 | and L2. */ | |
1761 | while (bc_l > 0 | |
f5336ca5 | 1762 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1763 | bc_l--; |
1764 | ||
876fa593 JK |
1765 | /* Now do full processing of the found relevant range of elements. */ |
1766 | ||
5d51cd5d | 1767 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1768 | { |
1769 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1770 | |
01add95b SM |
1771 | /* bp_location array has BL->OWNER always non-NULL. */ |
1772 | if (bl->owner->type == bp_none) | |
1773 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1774 | bl->owner->number); | |
ffce0d52 | 1775 | |
01add95b SM |
1776 | /* Performance optimization: any further element can no longer affect BUF |
1777 | content. */ | |
876fa593 | 1778 | |
01add95b SM |
1779 | if (bl->address >= bp_locations_placed_address_before_address_max |
1780 | && (memaddr + len | |
1781 | <= (bl->address | |
1782 | - bp_locations_placed_address_before_address_max))) | |
1783 | break; | |
876fa593 | 1784 | |
01add95b SM |
1785 | if (!bp_location_has_shadow (bl)) |
1786 | continue; | |
6c95b8df | 1787 | |
01add95b SM |
1788 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1789 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1790 | } | |
c906108c | 1791 | } |
9d497a19 | 1792 | |
f2478a7e | 1793 | /* See breakpoint.h. */ |
b775012e | 1794 | |
f2478a7e | 1795 | bool |
b775012e LM |
1796 | is_breakpoint (const struct breakpoint *bpt) |
1797 | { | |
1798 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1799 | || bpt->type == bp_hardware_breakpoint |
1800 | || bpt->type == bp_dprintf); | |
b775012e LM |
1801 | } |
1802 | ||
60e1c644 PA |
1803 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1804 | ||
f2478a7e | 1805 | static bool |
d77f58be | 1806 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1807 | { |
1808 | return (bpt->type == bp_hardware_watchpoint | |
1809 | || bpt->type == bp_read_watchpoint | |
1810 | || bpt->type == bp_access_watchpoint); | |
1811 | } | |
7270d8f2 | 1812 | |
f2478a7e | 1813 | /* See breakpoint.h. */ |
60e1c644 | 1814 | |
f2478a7e | 1815 | bool |
d77f58be | 1816 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1817 | { |
1818 | return (is_hardware_watchpoint (bpt) | |
1819 | || bpt->type == bp_watchpoint); | |
1820 | } | |
1821 | ||
3a5c3e22 PA |
1822 | /* Returns true if the current thread and its running state are safe |
1823 | to evaluate or update watchpoint B. Watchpoints on local | |
1824 | expressions need to be evaluated in the context of the thread that | |
1825 | was current when the watchpoint was created, and, that thread needs | |
1826 | to be stopped to be able to select the correct frame context. | |
1827 | Watchpoints on global expressions can be evaluated on any thread, | |
1828 | and in any state. It is presently left to the target allowing | |
1829 | memory accesses when threads are running. */ | |
f6bc2008 | 1830 | |
d8de7963 | 1831 | static bool |
3a5c3e22 | 1832 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1833 | { |
c1fc2657 | 1834 | return (b->pspace == current_program_space |
d7e15655 TT |
1835 | && (b->watchpoint_thread == null_ptid |
1836 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1837 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1838 | } |
1839 | ||
d0fb5eae JK |
1840 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1841 | associated bp_watchpoint_scope breakpoint. */ | |
1842 | ||
1843 | static void | |
3a5c3e22 | 1844 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1845 | { |
c1fc2657 | 1846 | if (w->related_breakpoint != w) |
d0fb5eae | 1847 | { |
c1fc2657 SM |
1848 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1849 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1850 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1851 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1852 | w->related_breakpoint = w; | |
d0fb5eae | 1853 | } |
c1fc2657 | 1854 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1855 | } |
1856 | ||
bb9d5f81 PP |
1857 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1858 | watchpoint W. */ | |
1859 | ||
1860 | static struct value * | |
1861 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1862 | { | |
1863 | struct value *bit_val; | |
1864 | ||
1865 | if (val == NULL) | |
1866 | return NULL; | |
1867 | ||
317c3ed9 | 1868 | bit_val = value::allocate (val->type ()); |
bb9d5f81 | 1869 | |
6c49729e TT |
1870 | val->unpack_bitfield (bit_val, |
1871 | w->val_bitpos, | |
1872 | w->val_bitsize, | |
1873 | val->contents_for_printing ().data (), | |
1874 | val->offset ()); | |
bb9d5f81 PP |
1875 | |
1876 | return bit_val; | |
1877 | } | |
1878 | ||
6e14e441 PA |
1879 | /* Allocate a dummy location and add it to B. This is required |
1880 | because bpstat_stop_status requires a location to be able to report | |
1881 | stops. */ | |
c6d81124 PA |
1882 | |
1883 | static void | |
6e14e441 PA |
1884 | add_dummy_location (struct breakpoint *b, |
1885 | struct program_space *pspace) | |
c6d81124 | 1886 | { |
6e14e441 | 1887 | gdb_assert (b->loc == NULL); |
c6d81124 | 1888 | |
6e14e441 | 1889 | b->loc = new bp_location (b, bp_loc_other); |
c6d81124 | 1890 | b->loc->pspace = pspace; |
c6d81124 PA |
1891 | } |
1892 | ||
567e1b4e | 1893 | /* Assuming that B is a watchpoint: |
d8de7963 | 1894 | - Reparse watchpoint expression, if REPARSE is true |
a5606eee | 1895 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1896 | - Evaluate the condition if there is one, and store the result |
1897 | in b->loc->cond. | |
a5606eee VP |
1898 | - Update the list of values that must be watched in B->loc. |
1899 | ||
4a64f543 MS |
1900 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1901 | nothing. If this is local watchpoint that is out of scope, delete | |
1902 | it. | |
1903 | ||
1904 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1905 | removed + inserted on each stop here. Normal breakpoints must | |
1906 | never be removed because they might be missed by a running thread | |
1907 | when debugging in non-stop mode. On the other hand, hardware | |
1908 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1909 | to each LWP since they are stored in each LWP's hardware debug | |
1910 | registers. Therefore, such LWP must be stopped first in order to | |
1911 | be able to modify its hardware watchpoints. | |
1912 | ||
1913 | Hardware watchpoints must be reset exactly once after being | |
1914 | presented to the user. It cannot be done sooner, because it would | |
1915 | reset the data used to present the watchpoint hit to the user. And | |
1916 | it must not be done later because it could display the same single | |
1917 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1918 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1919 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1920 | not user-visible - its hit is suppressed if the memory content has | |
1921 | not changed. | |
1922 | ||
1923 | The following constraints influence the location where we can reset | |
1924 | hardware watchpoints: | |
1925 | ||
1926 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1927 | called several times when GDB stops. | |
1928 | ||
1929 | [linux] | |
1930 | * Multiple hardware watchpoints can be hit at the same time, | |
1931 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1932 | hit at a time as the reason for stopping, and all the other hits | |
1933 | are presented later, one after the other, each time the user | |
1934 | requests the execution to be resumed. Execution is not resumed | |
1935 | for the threads still having pending hit event stored in | |
1936 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1937 | the inferior on the first stop the thread hit event is kept being | |
1938 | reported from its cached value by linux_nat_stopped_data_address | |
1939 | until the real thread resume happens after the watchpoint gets | |
1940 | presented and thus its LWP_INFO->STATUS gets reset. | |
1941 | ||
1942 | Therefore the hardware watchpoint hit can get safely reset on the | |
1943 | watchpoint removal from inferior. */ | |
a79d3c27 | 1944 | |
b40ce68a | 1945 | static void |
d8de7963 | 1946 | update_watchpoint (struct watchpoint *b, bool reparse) |
7270d8f2 | 1947 | { |
705b6305 | 1948 | bool within_current_scope; |
a5606eee | 1949 | |
f6bc2008 PA |
1950 | /* If this is a local watchpoint, we only want to check if the |
1951 | watchpoint frame is in scope if the current thread is the thread | |
1952 | that was used to create the watchpoint. */ | |
1953 | if (!watchpoint_in_thread_scope (b)) | |
1954 | return; | |
1955 | ||
c1fc2657 | 1956 | if (b->disposition == disp_del_at_next_stop) |
a5606eee | 1957 | return; |
705b6305 AB |
1958 | |
1959 | gdb::optional<scoped_restore_selected_frame> restore_frame; | |
a5606eee VP |
1960 | |
1961 | /* Determine if the watchpoint is within scope. */ | |
1962 | if (b->exp_valid_block == NULL) | |
705b6305 | 1963 | within_current_scope = true; |
a5606eee VP |
1964 | else |
1965 | { | |
bd2b40ac | 1966 | frame_info_ptr fi = get_current_frame (); |
b5db5dfc UW |
1967 | struct gdbarch *frame_arch = get_frame_arch (fi); |
1968 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1969 | ||
c9cf6e20 MG |
1970 | /* If we're at a point where the stack has been destroyed |
1971 | (e.g. in a function epilogue), unwinding may not work | |
1972 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1973 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1974 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1975 | return; |
66076460 DJ |
1976 | |
1977 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1978 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1979 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1980 | took a frame parameter, so that we didn't have to change the |
1981 | selected frame. */ | |
705b6305 | 1982 | restore_frame.emplace (); |
66076460 | 1983 | |
a5606eee VP |
1984 | fi = frame_find_by_id (b->watchpoint_frame); |
1985 | within_current_scope = (fi != NULL); | |
1986 | if (within_current_scope) | |
1987 | select_frame (fi); | |
1988 | } | |
1989 | ||
b5db5dfc UW |
1990 | /* We don't free locations. They are stored in the bp_location array |
1991 | and update_global_location_list will eventually delete them and | |
1992 | remove breakpoints if needed. */ | |
c1fc2657 | 1993 | b->loc = NULL; |
b5db5dfc | 1994 | |
a5606eee VP |
1995 | if (within_current_scope && reparse) |
1996 | { | |
bbc13ae3 | 1997 | const char *s; |
d63d0675 | 1998 | |
4d01a485 | 1999 | b->exp.reset (); |
a4c50be3 TT |
2000 | s = (b->exp_string_reparse |
2001 | ? b->exp_string_reparse.get () | |
2002 | : b->exp_string.get ()); | |
1bb9788d | 2003 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
2004 | /* If the meaning of expression itself changed, the old value is |
2005 | no longer relevant. We don't want to report a watchpoint hit | |
2006 | to the user when the old value and the new value may actually | |
2007 | be completely different objects. */ | |
fa4727a6 | 2008 | b->val = NULL; |
4c1d86d9 | 2009 | b->val_valid = false; |
60e1c644 PA |
2010 | |
2011 | /* Note that unlike with breakpoints, the watchpoint's condition | |
2012 | expression is stored in the breakpoint object, not in the | |
2013 | locations (re)created below. */ | |
c1fc2657 | 2014 | if (b->cond_string != NULL) |
60e1c644 | 2015 | { |
4d01a485 | 2016 | b->cond_exp.reset (); |
60e1c644 | 2017 | |
6f781ee3 | 2018 | s = b->cond_string.get (); |
1bb9788d | 2019 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 2020 | } |
a5606eee | 2021 | } |
a5606eee VP |
2022 | |
2023 | /* If we failed to parse the expression, for example because | |
2024 | it refers to a global variable in a not-yet-loaded shared library, | |
2025 | don't try to insert watchpoint. We don't automatically delete | |
2026 | such watchpoint, though, since failure to parse expression | |
2027 | is different from out-of-scope watchpoint. */ | |
55f6301a | 2028 | if (!target_has_execution ()) |
2d134ed3 PA |
2029 | { |
2030 | /* Without execution, memory can't change. No use to try and | |
2031 | set watchpoint locations. The watchpoint will be reset when | |
2032 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
2033 | if (!can_use_hw_watchpoints) |
2034 | { | |
c47614fe | 2035 | if (b->works_in_software_mode ()) |
c1fc2657 | 2036 | b->type = bp_watchpoint; |
e8369a73 | 2037 | else |
638aa5a1 AB |
2038 | error (_("Can't set read/access watchpoint when " |
2039 | "hardware watchpoints are disabled.")); | |
e8369a73 | 2040 | } |
2d134ed3 PA |
2041 | } |
2042 | else if (within_current_scope && b->exp) | |
a5606eee | 2043 | { |
a6535de1 | 2044 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 2045 | struct value *v, *result; |
2d134ed3 | 2046 | struct program_space *frame_pspace; |
a5606eee | 2047 | |
1eaebe02 | 2048 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 2049 | &val_chain, false); |
a5606eee | 2050 | |
a5606eee VP |
2051 | /* Avoid setting b->val if it's already set. The meaning of |
2052 | b->val is 'the last value' user saw, and we should update | |
2053 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
2054 | happens, the code that reports it updates b->val directly. |
2055 | We don't keep track of the memory value for masked | |
2056 | watchpoints. */ | |
c1fc2657 | 2057 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 2058 | { |
bb9d5f81 | 2059 | if (b->val_bitsize != 0) |
850645cf TT |
2060 | v = extract_bitfield_from_watchpoint_value (b, v); |
2061 | b->val = release_value (v); | |
4c1d86d9 | 2062 | b->val_valid = true; |
fa4727a6 | 2063 | } |
a5606eee | 2064 | |
2d134ed3 PA |
2065 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
2066 | ||
a5606eee | 2067 | /* Look at each value on the value chain. */ |
a6535de1 TT |
2068 | gdb_assert (!val_chain.empty ()); |
2069 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 2070 | { |
a6535de1 TT |
2071 | v = iter.get (); |
2072 | ||
a5606eee VP |
2073 | /* If it's a memory location, and GDB actually needed |
2074 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
2075 | must watch it. If the first value returned is |
2076 | still lazy, that means an error occurred reading it; | |
2077 | watch it anyway in case it becomes readable. */ | |
736355f2 | 2078 | if (v->lval () == lval_memory |
3ee3b270 | 2079 | && (v == val_chain[0] || ! v->lazy ())) |
a5606eee | 2080 | { |
d0c97917 | 2081 | struct type *vtype = check_typedef (v->type ()); |
7270d8f2 | 2082 | |
a5606eee VP |
2083 | /* We only watch structs and arrays if user asked |
2084 | for it explicitly, never if they just happen to | |
2085 | appear in the middle of some value chain. */ | |
fa4727a6 | 2086 | if (v == result |
78134374 SM |
2087 | || (vtype->code () != TYPE_CODE_STRUCT |
2088 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
2089 | { |
2090 | CORE_ADDR addr; | |
f486487f | 2091 | enum target_hw_bp_type type; |
a5606eee | 2092 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
2093 | int bitpos = 0, bitsize = 0; |
2094 | ||
f49d5fa2 | 2095 | if (v->bitsize () != 0) |
bb9d5f81 PP |
2096 | { |
2097 | /* Extract the bit parameters out from the bitfield | |
2098 | sub-expression. */ | |
5011c493 | 2099 | bitpos = v->bitpos (); |
f49d5fa2 | 2100 | bitsize = v->bitsize (); |
bb9d5f81 PP |
2101 | } |
2102 | else if (v == result && b->val_bitsize != 0) | |
2103 | { | |
2104 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2105 | lvalue whose bit parameters are saved in the fields | |
2106 | VAL_BITPOS and VAL_BITSIZE. */ | |
2107 | bitpos = b->val_bitpos; | |
2108 | bitsize = b->val_bitsize; | |
2109 | } | |
a5606eee | 2110 | |
9feb2d07 | 2111 | addr = v->address (); |
bb9d5f81 PP |
2112 | if (bitsize != 0) |
2113 | { | |
2114 | /* Skip the bytes that don't contain the bitfield. */ | |
2115 | addr += bitpos / 8; | |
2116 | } | |
2117 | ||
a5606eee | 2118 | type = hw_write; |
c1fc2657 | 2119 | if (b->type == bp_read_watchpoint) |
a5606eee | 2120 | type = hw_read; |
c1fc2657 | 2121 | else if (b->type == bp_access_watchpoint) |
a5606eee | 2122 | type = hw_access; |
3a5c3e22 | 2123 | |
ee89d0a4 | 2124 | loc = b->allocate_location (); |
c1fc2657 | 2125 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
a5606eee VP |
2126 | ; |
2127 | *tmp = loc; | |
d0c97917 | 2128 | loc->gdbarch = v->type ()->arch (); |
6c95b8df PA |
2129 | |
2130 | loc->pspace = frame_pspace; | |
d88cb738 LM |
2131 | loc->address |
2132 | = gdbarch_remove_non_address_bits (loc->gdbarch, addr); | |
bb9d5f81 PP |
2133 | |
2134 | if (bitsize != 0) | |
2135 | { | |
2136 | /* Just cover the bytes that make up the bitfield. */ | |
2137 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2138 | } | |
2139 | else | |
d0c97917 | 2140 | loc->length = v->type ()->length (); |
bb9d5f81 | 2141 | |
a5606eee VP |
2142 | loc->watchpoint_type = type; |
2143 | } | |
2144 | } | |
9fa40276 TJB |
2145 | } |
2146 | ||
07c1c91d AB |
2147 | /* Helper function to bundle possibly emitting a warning along with |
2148 | changing the type of B to bp_watchpoint. */ | |
2149 | auto change_type_to_bp_watchpoint = [] (breakpoint *bp) | |
2150 | { | |
2151 | /* Only warn for breakpoints that have been assigned a +ve number, | |
2152 | anything else is either an internal watchpoint (which we don't | |
2153 | currently create) or has not yet been finalized, in which case | |
2154 | this change of type will be occurring before the user is told | |
2155 | the type of this watchpoint. */ | |
2156 | if (bp->type == bp_hardware_watchpoint && bp->number > 0) | |
2157 | warning (_("watchpoint %d downgraded to software watchpoint"), | |
2158 | bp->number); | |
2159 | bp->type = bp_watchpoint; | |
2160 | }; | |
2161 | ||
9fa40276 | 2162 | /* Change the type of breakpoint between hardware assisted or |
bc45f536 CL |
2163 | an ordinary watchpoint depending on the hardware support and |
2164 | free hardware slots. Recheck the number of free hardware slots | |
2165 | as the value chain may have changed. */ | |
9fa40276 | 2166 | { |
e09342b5 | 2167 | int reg_cnt; |
9fa40276 | 2168 | enum bp_loc_type loc_type; |
a5606eee | 2169 | |
a9634178 | 2170 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2171 | |
2172 | if (reg_cnt) | |
9fa40276 TJB |
2173 | { |
2174 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2175 | enum bptype type; |
9fa40276 | 2176 | |
a9634178 TJB |
2177 | /* Use an exact watchpoint when there's only one memory region to be |
2178 | watched, and only one debug register is needed to watch it. */ | |
2179 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2180 | ||
9fa40276 | 2181 | /* We need to determine how many resources are already |
e09342b5 TJB |
2182 | used for all other hardware watchpoints plus this one |
2183 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2184 | this watchpoint in as well. */ |
2185 | ||
2186 | /* If this is a software watchpoint, we try to turn it | |
2187 | to a hardware one -- count resources as if B was of | |
2188 | hardware watchpoint type. */ | |
c1fc2657 | 2189 | type = b->type; |
a1398e0c PA |
2190 | if (type == bp_watchpoint) |
2191 | type = bp_hardware_watchpoint; | |
2192 | ||
2193 | /* This watchpoint may or may not have been placed on | |
2194 | the list yet at this point (it won't be in the list | |
2195 | if we're trying to create it for the first time, | |
2196 | through watch_command), so always account for it | |
2197 | manually. */ | |
2198 | ||
2199 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2200 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2201 | |
2202 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2203 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2204 | |
2205 | target_resources_ok | |
2206 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2207 | if (target_resources_ok <= 0) |
a9634178 | 2208 | { |
5a61e176 | 2209 | bool sw_mode = b->works_in_software_mode (); |
9c06b0b4 TJB |
2210 | |
2211 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2212 | error (_("Target does not support this type of " |
2213 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2214 | else if (target_resources_ok < 0 && !sw_mode) |
2215 | error (_("There are not enough available hardware " | |
2216 | "resources for this watchpoint.")); | |
a1398e0c PA |
2217 | |
2218 | /* Downgrade to software watchpoint. */ | |
07c1c91d | 2219 | change_type_to_bp_watchpoint (b); |
a1398e0c PA |
2220 | } |
2221 | else | |
2222 | { | |
2223 | /* If this was a software watchpoint, we've just | |
2224 | found we have enough resources to turn it to a | |
2225 | hardware watchpoint. Otherwise, this is a | |
2226 | nop. */ | |
c1fc2657 | 2227 | b->type = type; |
a9634178 | 2228 | } |
9fa40276 | 2229 | } |
c47614fe | 2230 | else if (!b->works_in_software_mode ()) |
638aa5a1 AB |
2231 | { |
2232 | if (!can_use_hw_watchpoints) | |
2233 | error (_("Can't set read/access watchpoint when " | |
2234 | "hardware watchpoints are disabled.")); | |
2235 | else | |
2236 | error (_("Expression cannot be implemented with " | |
2237 | "read/access watchpoint.")); | |
2238 | } | |
9fa40276 | 2239 | else |
07c1c91d | 2240 | change_type_to_bp_watchpoint (b); |
9fa40276 | 2241 | |
6e14e441 | 2242 | loc_type = (b->type == bp_watchpoint? bp_loc_software_watchpoint |
9fa40276 | 2243 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2244 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2245 | bl->loc_type = loc_type; |
2246 | } | |
2247 | ||
c7437ca6 PA |
2248 | /* If a software watchpoint is not watching any memory, then the |
2249 | above left it without any location set up. But, | |
2250 | bpstat_stop_status requires a location to be able to report | |
2251 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 | 2252 | if (b->type == bp_watchpoint && b->loc == NULL) |
6e14e441 | 2253 | add_dummy_location (b, frame_pspace); |
a5606eee VP |
2254 | } |
2255 | else if (!within_current_scope) | |
7270d8f2 | 2256 | { |
6cb06a8c | 2257 | gdb_printf (_("\ |
ac74f770 MS |
2258 | Watchpoint %d deleted because the program has left the block\n\ |
2259 | in which its expression is valid.\n"), | |
6cb06a8c | 2260 | b->number); |
d0fb5eae | 2261 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2262 | } |
7270d8f2 OF |
2263 | } |
2264 | ||
d8de7963 | 2265 | /* Returns true iff breakpoint location should be |
1e4d1764 YQ |
2266 | inserted in the inferior. We don't differentiate the type of BL's owner |
2267 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2268 | breakpoint_ops is not defined, because in insert_bp_location, | |
2269 | tracepoint's insert_location will not be called. */ | |
d8de7963 AB |
2270 | |
2271 | static bool | |
35df4500 | 2272 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2273 | { |
35df4500 | 2274 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
d8de7963 | 2275 | return false; |
74960c60 | 2276 | |
35df4500 | 2277 | if (bl->owner->disposition == disp_del_at_next_stop) |
d8de7963 | 2278 | return false; |
74960c60 | 2279 | |
b5fa468f TBA |
2280 | if (!bl->enabled || bl->disabled_by_cond |
2281 | || bl->shlib_disabled || bl->duplicate) | |
d8de7963 | 2282 | return false; |
74960c60 | 2283 | |
f8eba3c6 | 2284 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
d8de7963 | 2285 | return false; |
f8eba3c6 | 2286 | |
56710373 PA |
2287 | /* This is set for example, when we're attached to the parent of a |
2288 | vfork, and have detached from the child. The child is running | |
2289 | free, and we expect it to do an exec or exit, at which point the | |
2290 | OS makes the parent schedulable again (and the target reports | |
2291 | that the vfork is done). Until the child is done with the shared | |
2292 | memory region, do not insert breakpoints in the parent, otherwise | |
2293 | the child could still trip on the parent's breakpoints. Since | |
2294 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2295 | if (bl->pspace->breakpoints_not_allowed) |
d8de7963 | 2296 | return false; |
56710373 | 2297 | |
31e77af2 | 2298 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2299 | location, except if the breakpoint is a single-step breakpoint, |
2300 | and the breakpoint's thread is the thread which is stepping past | |
2301 | a breakpoint. */ | |
31e77af2 PA |
2302 | if ((bl->loc_type == bp_loc_software_breakpoint |
2303 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2304 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2305 | bl->address) |
2306 | /* The single-step breakpoint may be inserted at the location | |
2307 | we're trying to step if the instruction branches to itself. | |
2308 | However, the instruction won't be executed at all and it may | |
2309 | break the semantics of the instruction, for example, the | |
2310 | instruction is a conditional branch or updates some flags. | |
2311 | We can't fix it unless GDB is able to emulate the instruction | |
2312 | or switch to displaced stepping. */ | |
2313 | && !(bl->owner->type == bp_single_step | |
2314 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2315 | { |
1eb8556f SM |
2316 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2317 | paddress (bl->gdbarch, bl->address)); | |
d8de7963 | 2318 | return false; |
e558d7c1 | 2319 | } |
31e77af2 | 2320 | |
963f9c80 PA |
2321 | /* Don't insert watchpoints if we're trying to step past the |
2322 | instruction that triggered one. */ | |
2323 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2324 | && stepping_past_nonsteppable_watchpoint ()) | |
2325 | { | |
1eb8556f | 2326 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2327 | "skipping watchpoint at %s:%d", |
1eb8556f | 2328 | paddress (bl->gdbarch, bl->address), bl->length); |
d8de7963 | 2329 | return false; |
963f9c80 PA |
2330 | } |
2331 | ||
d8de7963 | 2332 | return true; |
74960c60 VP |
2333 | } |
2334 | ||
934709f0 PW |
2335 | /* Same as should_be_inserted but does the check assuming |
2336 | that the location is not duplicated. */ | |
2337 | ||
aaa141a0 | 2338 | static bool |
934709f0 PW |
2339 | unduplicated_should_be_inserted (struct bp_location *bl) |
2340 | { | |
aaa141a0 AB |
2341 | scoped_restore restore_bl_duplicate |
2342 | = make_scoped_restore (&bl->duplicate, 0); | |
934709f0 | 2343 | |
aaa141a0 | 2344 | return should_be_inserted (bl); |
934709f0 PW |
2345 | } |
2346 | ||
b775012e LM |
2347 | /* Parses a conditional described by an expression COND into an |
2348 | agent expression bytecode suitable for evaluation | |
2349 | by the bytecode interpreter. Return NULL if there was | |
2350 | any error during parsing. */ | |
2351 | ||
833177a4 | 2352 | static agent_expr_up |
b775012e LM |
2353 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2354 | { | |
833177a4 | 2355 | if (cond == NULL) |
b775012e LM |
2356 | return NULL; |
2357 | ||
833177a4 PA |
2358 | agent_expr_up aexpr; |
2359 | ||
b775012e LM |
2360 | /* We don't want to stop processing, so catch any errors |
2361 | that may show up. */ | |
a70b8144 | 2362 | try |
b775012e | 2363 | { |
036e657b | 2364 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2365 | } |
2366 | ||
230d2906 | 2367 | catch (const gdb_exception_error &ex) |
b775012e LM |
2368 | { |
2369 | /* If we got here, it means the condition could not be parsed to a valid | |
2370 | bytecode expression and thus can't be evaluated on the target's side. | |
2371 | It's no use iterating through the conditions. */ | |
b775012e LM |
2372 | } |
2373 | ||
2374 | /* We have a valid agent expression. */ | |
2375 | return aexpr; | |
2376 | } | |
2377 | ||
2378 | /* Based on location BL, create a list of breakpoint conditions to be | |
2379 | passed on to the target. If we have duplicated locations with different | |
2380 | conditions, we will add such conditions to the list. The idea is that the | |
2381 | target will evaluate the list of conditions and will only notify GDB when | |
2382 | one of them is true. */ | |
2383 | ||
2384 | static void | |
2385 | build_target_condition_list (struct bp_location *bl) | |
2386 | { | |
d8de7963 | 2387 | bool null_condition_or_parse_error = false; |
b775012e | 2388 | int modified = bl->needs_update; |
b775012e | 2389 | |
8b4f3082 | 2390 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2391 | bl->target_info.conditions.clear (); |
8b4f3082 | 2392 | |
b775012e LM |
2393 | /* This is only meaningful if the target is |
2394 | evaluating conditions and if the user has | |
2395 | opted for condition evaluation on the target's | |
2396 | side. */ | |
2397 | if (gdb_evaluates_breakpoint_condition_p () | |
2398 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2399 | return; | |
2400 | ||
e0d9a270 SM |
2401 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2402 | ||
b775012e | 2403 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2404 | conditions or conditions that fail to parse to a valid agent |
2405 | expression bytecode. If any of these happen, then it's no use to | |
2406 | send conditions to the target since this location will always | |
2407 | trigger and generate a response back to GDB. Note we consider | |
2408 | all locations at the same address irrespective of type, i.e., | |
2409 | even if the locations aren't considered duplicates (e.g., | |
2410 | software breakpoint and hardware breakpoint at the same | |
2411 | address). */ | |
e0d9a270 | 2412 | for (bp_location *loc : loc_range) |
b775012e | 2413 | { |
b775012e LM |
2414 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2415 | { | |
2416 | if (modified) | |
2417 | { | |
b775012e LM |
2418 | /* Re-parse the conditions since something changed. In that |
2419 | case we already freed the condition bytecodes (see | |
2420 | force_breakpoint_reinsertion). We just | |
2421 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2422 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2423 | loc->cond.get ()); | |
b775012e LM |
2424 | } |
2425 | ||
2426 | /* If we have a NULL bytecode expression, it means something | |
2427 | went wrong or we have a null condition expression. */ | |
2428 | if (!loc->cond_bytecode) | |
2429 | { | |
d8de7963 | 2430 | null_condition_or_parse_error = true; |
b775012e LM |
2431 | break; |
2432 | } | |
2433 | } | |
2434 | } | |
2435 | ||
2436 | /* If any of these happened, it means we will have to evaluate the conditions | |
2437 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2438 | for all the other duplicate locations, thus we free all of them here. | |
2439 | ||
2440 | This is so we have a finer control over which locations' conditions are | |
2441 | being evaluated by GDB or the remote stub. */ | |
2442 | if (null_condition_or_parse_error) | |
2443 | { | |
e0d9a270 | 2444 | for (bp_location *loc : loc_range) |
b775012e | 2445 | { |
b775012e LM |
2446 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2447 | { | |
2448 | /* Only go as far as the first NULL bytecode is | |
2449 | located. */ | |
2450 | if (!loc->cond_bytecode) | |
2451 | return; | |
2452 | ||
833177a4 | 2453 | loc->cond_bytecode.reset (); |
b775012e LM |
2454 | } |
2455 | } | |
2456 | } | |
2457 | ||
7f32a4d5 PA |
2458 | /* No NULL conditions or failed bytecode generation. Build a |
2459 | condition list for this location's address. If we have software | |
2460 | and hardware locations at the same address, they aren't | |
2461 | considered duplicates, but we still marge all the conditions | |
2462 | anyway, as it's simpler, and doesn't really make a practical | |
2463 | difference. */ | |
e0d9a270 SM |
2464 | for (bp_location *loc : loc_range) |
2465 | if (loc->cond | |
2466 | && is_breakpoint (loc->owner) | |
2467 | && loc->pspace->num == bl->pspace->num | |
2468 | && loc->owner->enable_state == bp_enabled | |
2469 | && loc->enabled | |
2470 | && !loc->disabled_by_cond) | |
2471 | { | |
2472 | /* Add the condition to the vector. This will be used later | |
2473 | to send the conditions to the target. */ | |
2474 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2475 | } | |
b775012e LM |
2476 | |
2477 | return; | |
2478 | } | |
2479 | ||
d3ce09f5 SS |
2480 | /* Parses a command described by string CMD into an agent expression |
2481 | bytecode suitable for evaluation by the bytecode interpreter. | |
2482 | Return NULL if there was any error during parsing. */ | |
2483 | ||
833177a4 | 2484 | static agent_expr_up |
d3ce09f5 SS |
2485 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2486 | { | |
bbc13ae3 KS |
2487 | const char *cmdrest; |
2488 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2489 | struct gdbarch *gdbarch = get_current_arch (); |
2490 | ||
833177a4 | 2491 | if (cmd == NULL) |
d3ce09f5 SS |
2492 | return NULL; |
2493 | ||
2494 | cmdrest = cmd; | |
2495 | ||
2496 | if (*cmdrest == ',') | |
2497 | ++cmdrest; | |
f1735a53 | 2498 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2499 | |
2500 | if (*cmdrest++ != '"') | |
2501 | error (_("No format string following the location")); | |
2502 | ||
2503 | format_start = cmdrest; | |
2504 | ||
8e481c3b | 2505 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2506 | |
2507 | format_end = cmdrest; | |
2508 | ||
2509 | if (*cmdrest++ != '"') | |
2510 | error (_("Bad format string, non-terminated '\"'.")); | |
2511 | ||
f1735a53 | 2512 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2513 | |
2514 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2515 | error (_("Invalid argument syntax")); | |
2516 | ||
2517 | if (*cmdrest == ',') | |
2518 | cmdrest++; | |
f1735a53 | 2519 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2520 | |
2521 | /* For each argument, make an expression. */ | |
2522 | ||
8e481c3b | 2523 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2524 | while (*cmdrest != '\0') |
2525 | { | |
bbc13ae3 | 2526 | const char *cmd1; |
d3ce09f5 SS |
2527 | |
2528 | cmd1 = cmdrest; | |
4d01a485 | 2529 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2530 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2531 | cmdrest = cmd1; |
2532 | if (*cmdrest == ',') | |
2533 | ++cmdrest; | |
2534 | } | |
2535 | ||
833177a4 PA |
2536 | agent_expr_up aexpr; |
2537 | ||
d3ce09f5 SS |
2538 | /* We don't want to stop processing, so catch any errors |
2539 | that may show up. */ | |
a70b8144 | 2540 | try |
d3ce09f5 | 2541 | { |
036e657b JB |
2542 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2543 | format_start, format_end - format_start, | |
8e481c3b | 2544 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2545 | } |
230d2906 | 2546 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2547 | { |
2548 | /* If we got here, it means the command could not be parsed to a valid | |
2549 | bytecode expression and thus can't be evaluated on the target's side. | |
2550 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2551 | } |
492d29ea | 2552 | |
d3ce09f5 SS |
2553 | /* We have a valid agent expression, return it. */ |
2554 | return aexpr; | |
2555 | } | |
2556 | ||
2557 | /* Based on location BL, create a list of breakpoint commands to be | |
2558 | passed on to the target. If we have duplicated locations with | |
2559 | different commands, we will add any such to the list. */ | |
2560 | ||
2561 | static void | |
2562 | build_target_command_list (struct bp_location *bl) | |
2563 | { | |
d8de7963 | 2564 | bool null_command_or_parse_error = false; |
d3ce09f5 | 2565 | int modified = bl->needs_update; |
d3ce09f5 | 2566 | |
3cde5c42 PA |
2567 | /* Clear commands left over from a previous insert. */ |
2568 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2569 | |
41fac0cf | 2570 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2571 | return; |
2572 | ||
41fac0cf PA |
2573 | /* For now, limit to agent-style dprintf breakpoints. */ |
2574 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2575 | return; |
2576 | ||
e0d9a270 SM |
2577 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2578 | ||
7f32a4d5 PA |
2579 | /* For now, if we have any location at the same address that isn't a |
2580 | dprintf, don't install the target-side commands, as that would | |
2581 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2582 | control. */ |
e0d9a270 SM |
2583 | for (bp_location *loc : loc_range) |
2584 | if (is_breakpoint (loc->owner) | |
2585 | && loc->pspace->num == bl->pspace->num | |
2586 | && loc->owner->type != bp_dprintf) | |
2587 | return; | |
41fac0cf | 2588 | |
d3ce09f5 SS |
2589 | /* Do a first pass to check for locations with no assigned |
2590 | conditions or conditions that fail to parse to a valid agent expression | |
2591 | bytecode. If any of these happen, then it's no use to send conditions | |
2592 | to the target since this location will always trigger and generate a | |
2593 | response back to GDB. */ | |
e0d9a270 | 2594 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2595 | { |
d3ce09f5 SS |
2596 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2597 | { | |
2598 | if (modified) | |
2599 | { | |
d3ce09f5 SS |
2600 | /* Re-parse the commands since something changed. In that |
2601 | case we already freed the command bytecodes (see | |
2602 | force_breakpoint_reinsertion). We just | |
2603 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2604 | loc->cmd_bytecode |
2605 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2606 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2607 | } |
2608 | ||
2609 | /* If we have a NULL bytecode expression, it means something | |
2610 | went wrong or we have a null command expression. */ | |
2611 | if (!loc->cmd_bytecode) | |
2612 | { | |
d8de7963 | 2613 | null_command_or_parse_error = true; |
d3ce09f5 SS |
2614 | break; |
2615 | } | |
2616 | } | |
2617 | } | |
2618 | ||
2619 | /* If anything failed, then we're not doing target-side commands, | |
2620 | and so clean up. */ | |
2621 | if (null_command_or_parse_error) | |
2622 | { | |
e0d9a270 SM |
2623 | for (bp_location *loc : loc_range) |
2624 | if (is_breakpoint (loc->owner) | |
2625 | && loc->pspace->num == bl->pspace->num) | |
2626 | { | |
2627 | /* Only go as far as the first NULL bytecode is | |
2628 | located. */ | |
2629 | if (loc->cmd_bytecode == NULL) | |
2630 | return; | |
d3ce09f5 | 2631 | |
e0d9a270 SM |
2632 | loc->cmd_bytecode.reset (); |
2633 | } | |
d3ce09f5 SS |
2634 | } |
2635 | ||
7f32a4d5 PA |
2636 | /* No NULL commands or failed bytecode generation. Build a command |
2637 | list for all duplicate locations at this location's address. | |
2638 | Note that here we must care for whether the breakpoint location | |
2639 | types are considered duplicates, otherwise, say, if we have a | |
2640 | software and hardware location at the same address, the target | |
2641 | could end up running the commands twice. For the moment, we only | |
2642 | support targets-side commands with dprintf, but it doesn't hurt | |
2643 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2644 | for (bp_location *loc : loc_range) |
2645 | if (breakpoint_locations_match (bl, loc) | |
2646 | && loc->owner->extra_string | |
2647 | && is_breakpoint (loc->owner) | |
2648 | && loc->pspace->num == bl->pspace->num | |
2649 | && loc->owner->enable_state == bp_enabled | |
2650 | && loc->enabled | |
2651 | && !loc->disabled_by_cond) | |
2652 | { | |
2653 | /* Add the command to the vector. This will be used later | |
2654 | to send the commands to the target. */ | |
2655 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2656 | } | |
d3ce09f5 SS |
2657 | |
2658 | bl->target_info.persist = 0; | |
2659 | /* Maybe flag this location as persistent. */ | |
2660 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2661 | bl->target_info.persist = 1; | |
2662 | } | |
2663 | ||
833b7ab5 YQ |
2664 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2665 | of breakpoint according to ADDR except single-step breakpoint. | |
2666 | Get the kind of single-step breakpoint according to the current | |
2667 | registers state. */ | |
cd6c3b4f YQ |
2668 | |
2669 | static int | |
b2ff9ed3 | 2670 | breakpoint_kind (const struct bp_location *bl, CORE_ADDR *addr) |
cd6c3b4f | 2671 | { |
833b7ab5 YQ |
2672 | if (bl->owner->type == bp_single_step) |
2673 | { | |
2674 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2675 | struct regcache *regcache; | |
2676 | ||
00431a78 | 2677 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2678 | |
2679 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2680 | regcache, addr); | |
2681 | } | |
2682 | else | |
2683 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2684 | } |
2685 | ||
47e2c30a TV |
2686 | /* Rethrow the currently handled exception, if it's a TARGET_CLOSE_ERROR. |
2687 | E is either the currently handled exception, or a copy, or a sliced copy, | |
2688 | so we can't rethrow that one, but we can use it to inspect the properties | |
2689 | of the currently handled exception. */ | |
2690 | ||
2691 | static void | |
2692 | rethrow_on_target_close_error (const gdb_exception &e) | |
2693 | { | |
2694 | if (e.reason == 0) | |
2695 | return; | |
2696 | /* Can't set the breakpoint. */ | |
2697 | ||
2698 | if (e.error != TARGET_CLOSE_ERROR) | |
2699 | return; | |
2700 | ||
2701 | /* If the target has closed then it will have deleted any breakpoints | |
2702 | inserted within the target inferior, as a result any further attempts | |
2703 | to interact with the breakpoint objects is not possible. Just rethrow | |
2704 | the error. Don't use e to rethrow, to prevent object slicing of the | |
2705 | exception. */ | |
2706 | throw; | |
2707 | } | |
b2829fcf | 2708 | |
35df4500 TJB |
2709 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2710 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2711 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2712 | Returns 0 for success, 1 if the bp_location type is not supported or |
2713 | -1 for failure. | |
879bfdc2 | 2714 | |
4a64f543 MS |
2715 | NOTE drow/2003-09-09: This routine could be broken down to an |
2716 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2717 | static int |
35df4500 | 2718 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2719 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2720 | int *disabled_breaks, |
dd61ec5c MW |
2721 | int *hw_breakpoint_error, |
2722 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2723 | { |
cc06b668 | 2724 | gdb_exception bp_excpt; |
879bfdc2 | 2725 | |
b775012e | 2726 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2727 | return 0; |
2728 | ||
35c63cd8 JB |
2729 | /* Note we don't initialize bl->target_info, as that wipes out |
2730 | the breakpoint location's shadow_contents if the breakpoint | |
2731 | is still inserted at that location. This in turn breaks | |
2732 | target_read_memory which depends on these buffers when | |
2733 | a memory read is requested at the breakpoint location: | |
2734 | Once the target_info has been wiped, we fail to see that | |
2735 | we have a breakpoint inserted at that address and thus | |
2736 | read the breakpoint instead of returning the data saved in | |
2737 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2738 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2739 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2740 | bl->target_info.length = bl->length; |
8181d85f | 2741 | |
b775012e LM |
2742 | /* When working with target-side conditions, we must pass all the conditions |
2743 | for the same breakpoint address down to the target since GDB will not | |
2744 | insert those locations. With a list of breakpoint conditions, the target | |
2745 | can decide when to stop and notify GDB. */ | |
2746 | ||
2747 | if (is_breakpoint (bl->owner)) | |
2748 | { | |
2749 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2750 | build_target_command_list (bl); |
2751 | /* Reset the modification marker. */ | |
b775012e LM |
2752 | bl->needs_update = 0; |
2753 | } | |
2754 | ||
7f32a4d5 PA |
2755 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2756 | set at a read-only address, then a breakpoint location will have | |
2757 | been changed to hardware breakpoint before we get here. If it is | |
2758 | "off" however, error out before actually trying to insert the | |
2759 | breakpoint, with a nicer error message. */ | |
35df4500 | 2760 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2761 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2762 | { |
7f32a4d5 | 2763 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2764 | |
7f32a4d5 PA |
2765 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2766 | { | |
6cb06a8c TT |
2767 | gdb_printf (tmp_error_stream, |
2768 | _("Cannot insert breakpoint %d.\n" | |
2769 | "Cannot set software breakpoint " | |
2770 | "at read-only address %s\n"), | |
2771 | bl->owner->number, | |
2772 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2773 | return 1; |
765dc015 | 2774 | } |
7f32a4d5 PA |
2775 | } |
2776 | ||
2777 | if (bl->loc_type == bp_loc_software_breakpoint | |
2778 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2779 | { | |
879bfdc2 DJ |
2780 | /* First check to see if we have to handle an overlay. */ |
2781 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2782 | || bl->section == NULL |
2783 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2784 | { |
2785 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2786 | try |
dd61ec5c | 2787 | { |
0000e5cc PA |
2788 | int val; |
2789 | ||
c47614fe | 2790 | val = bl->owner->insert_location (bl); |
0000e5cc | 2791 | if (val) |
688fca4f | 2792 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2793 | } |
94aeb44b | 2794 | catch (gdb_exception &e) |
dd61ec5c | 2795 | { |
47e2c30a | 2796 | rethrow_on_target_close_error (e); |
94aeb44b | 2797 | bp_excpt = std::move (e); |
dd61ec5c | 2798 | } |
879bfdc2 DJ |
2799 | } |
2800 | else | |
2801 | { | |
4a64f543 | 2802 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2803 | Shall we set a breakpoint at the LMA? */ |
2804 | if (!overlay_events_enabled) | |
2805 | { | |
2806 | /* Yes -- overlay event support is not active, | |
2807 | so we must try to set a breakpoint at the LMA. | |
2808 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2809 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2810 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2811 | bl->owner->number); |
879bfdc2 DJ |
2812 | else |
2813 | { | |
35df4500 TJB |
2814 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2815 | bl->section); | |
879bfdc2 | 2816 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2817 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2818 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2819 | |
2820 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2821 | try |
0000e5cc PA |
2822 | { |
2823 | int val; | |
2824 | ||
579c6ad9 | 2825 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2826 | = breakpoint_kind (bl, &addr); |
2827 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2828 | val = target_insert_breakpoint (bl->gdbarch, |
2829 | &bl->overlay_target_info); | |
2830 | if (val) | |
688fca4f PA |
2831 | bp_excpt |
2832 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2833 | } |
94aeb44b | 2834 | catch (gdb_exception &e) |
0000e5cc | 2835 | { |
47e2c30a | 2836 | rethrow_on_target_close_error (e); |
94aeb44b | 2837 | bp_excpt = std::move (e); |
0000e5cc PA |
2838 | } |
2839 | ||
688fca4f | 2840 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2841 | gdb_printf (tmp_error_stream, |
2842 | "Overlay breakpoint %d " | |
2843 | "failed: in ROM?\n", | |
2844 | bl->owner->number); | |
879bfdc2 DJ |
2845 | } |
2846 | } | |
2847 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2848 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2849 | { |
2850 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2851 | try |
dda83cd7 | 2852 | { |
0000e5cc PA |
2853 | int val; |
2854 | ||
c47614fe | 2855 | val = bl->owner->insert_location (bl); |
0000e5cc | 2856 | if (val) |
688fca4f | 2857 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2858 | } |
b1ffd112 | 2859 | catch (gdb_exception_error &e) |
dda83cd7 | 2860 | { |
47e2c30a | 2861 | rethrow_on_target_close_error (e); |
94aeb44b | 2862 | bp_excpt = std::move (e); |
dda83cd7 | 2863 | } |
879bfdc2 DJ |
2864 | } |
2865 | else | |
2866 | { | |
2867 | /* No. This breakpoint will not be inserted. | |
2868 | No error, but do not mark the bp as 'inserted'. */ | |
2869 | return 0; | |
2870 | } | |
2871 | } | |
2872 | ||
688fca4f | 2873 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2874 | { |
2875 | /* Can't set the breakpoint. */ | |
80dc83fd AB |
2876 | gdb_assert (bl->owner != nullptr); |
2877 | ||
0000e5cc PA |
2878 | /* In some cases, we might not be able to insert a |
2879 | breakpoint in a shared library that has already been | |
2880 | removed, but we have not yet processed the shlib unload | |
2881 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2882 | breakpoint insertion themselves can't tell why the |
2883 | breakpoint insertion failed (e.g., the remote target | |
2884 | doesn't define error codes), so we must treat generic | |
2885 | errors as memory errors. */ | |
688fca4f PA |
2886 | if (bp_excpt.reason == RETURN_ERROR |
2887 | && (bp_excpt.error == GENERIC_ERROR | |
2888 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2889 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2890 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2891 | || shared_objfile_contains_address_p (bl->pspace, |
2892 | bl->address))) | |
879bfdc2 | 2893 | { |
4a64f543 | 2894 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2895 | bl->shlib_disabled = 1; |
76727919 | 2896 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2897 | if (!*disabled_breaks) |
2898 | { | |
6cb06a8c TT |
2899 | gdb_printf (tmp_error_stream, |
2900 | "Cannot insert breakpoint %d.\n", | |
2901 | bl->owner->number); | |
2902 | gdb_printf (tmp_error_stream, | |
2903 | "Temporarily disabling shared " | |
2904 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2905 | } |
2906 | *disabled_breaks = 1; | |
6cb06a8c TT |
2907 | gdb_printf (tmp_error_stream, |
2908 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2909 | return 0; |
879bfdc2 DJ |
2910 | } |
2911 | else | |
879bfdc2 | 2912 | { |
35df4500 | 2913 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2914 | { |
0000e5cc | 2915 | *hw_breakpoint_error = 1; |
688fca4f | 2916 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2917 | gdb_printf (tmp_error_stream, |
2918 | "Cannot insert hardware breakpoint %d%s", | |
2919 | bl->owner->number, | |
2920 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2921 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2922 | gdb_printf (tmp_error_stream, "%s.\n", |
2923 | bp_excpt.what ()); | |
879bfdc2 DJ |
2924 | } |
2925 | else | |
2926 | { | |
688fca4f | 2927 | if (bp_excpt.message == NULL) |
0000e5cc | 2928 | { |
1ccbe998 | 2929 | std::string message |
0000e5cc PA |
2930 | = memory_error_message (TARGET_XFER_E_IO, |
2931 | bl->gdbarch, bl->address); | |
0000e5cc | 2932 | |
6cb06a8c TT |
2933 | gdb_printf (tmp_error_stream, |
2934 | "Cannot insert breakpoint %d.\n" | |
2935 | "%s\n", | |
2936 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2937 | } |
2938 | else | |
2939 | { | |
6cb06a8c TT |
2940 | gdb_printf (tmp_error_stream, |
2941 | "Cannot insert breakpoint %d: %s\n", | |
2942 | bl->owner->number, | |
2943 | bp_excpt.what ()); | |
0000e5cc | 2944 | } |
879bfdc2 | 2945 | } |
0000e5cc | 2946 | return 1; |
879bfdc2 DJ |
2947 | |
2948 | } | |
2949 | } | |
2950 | else | |
35df4500 | 2951 | bl->inserted = 1; |
879bfdc2 | 2952 | |
0000e5cc | 2953 | return 0; |
879bfdc2 DJ |
2954 | } |
2955 | ||
35df4500 | 2956 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
35df4500 | 2957 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2958 | { |
0000e5cc PA |
2959 | int val; |
2960 | ||
c47614fe | 2961 | val = bl->owner->insert_location (bl); |
85d721b8 PA |
2962 | |
2963 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2964 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2965 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2966 | { |
85d721b8 PA |
2967 | /* But don't try to insert it, if there's already another |
2968 | hw_access location that would be considered a duplicate | |
2969 | of this one. */ | |
48d7020b | 2970 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2971 | if (loc != bl |
85d721b8 | 2972 | && loc->watchpoint_type == hw_access |
35df4500 | 2973 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2974 | { |
35df4500 TJB |
2975 | bl->duplicate = 1; |
2976 | bl->inserted = 1; | |
2977 | bl->target_info = loc->target_info; | |
2978 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2979 | val = 0; |
2980 | break; | |
2981 | } | |
2982 | ||
2983 | if (val == 1) | |
2984 | { | |
77b06cd7 | 2985 | bl->watchpoint_type = hw_access; |
c47614fe | 2986 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2987 | |
2988 | if (val) | |
2989 | /* Back to the original value. */ | |
2990 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2991 | } |
2992 | } | |
2993 | ||
35df4500 | 2994 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2995 | } |
2996 | ||
35df4500 | 2997 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2998 | { |
0000e5cc PA |
2999 | int val; |
3000 | ||
c47614fe | 3001 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
3002 | if (val) |
3003 | { | |
3004 | bl->owner->enable_state = bp_disabled; | |
3005 | ||
3006 | if (val == 1) | |
3007 | warning (_("\ | |
3008 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
3009 | of catchpoint."), bl->owner->number); | |
3010 | else | |
3011 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
3012 | } | |
3013 | ||
3014 | bl->inserted = (val == 0); | |
1640b821 DJ |
3015 | |
3016 | /* We've already printed an error message if there was a problem | |
3017 | inserting this catchpoint, and we've disabled the catchpoint, | |
3018 | so just return success. */ | |
3019 | return 0; | |
879bfdc2 DJ |
3020 | } |
3021 | ||
3022 | return 0; | |
3023 | } | |
3024 | ||
6c95b8df PA |
3025 | /* This function is called when program space PSPACE is about to be |
3026 | deleted. It takes care of updating breakpoints to not reference | |
3027 | PSPACE anymore. */ | |
3028 | ||
3029 | void | |
3030 | breakpoint_program_space_exit (struct program_space *pspace) | |
3031 | { | |
6c95b8df | 3032 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
3033 | for (breakpoint *b : all_breakpoints_safe ()) |
3034 | if (b->pspace == pspace) | |
3035 | delete_breakpoint (b); | |
6c95b8df PA |
3036 | |
3037 | /* Breakpoints set through other program spaces could have locations | |
3038 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 3039 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
3040 | { |
3041 | struct bp_location *tmp; | |
3042 | ||
3043 | if (loc->pspace == pspace) | |
3044 | { | |
2bdf28a0 | 3045 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
3046 | if (loc->owner->loc == loc) |
3047 | loc->owner->loc = loc->next; | |
3048 | else | |
3049 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
3050 | if (tmp->next == loc) | |
3051 | { | |
3052 | tmp->next = loc->next; | |
3053 | break; | |
3054 | } | |
3055 | } | |
3056 | } | |
3057 | ||
3058 | /* Now update the global location list to permanently delete the | |
3059 | removed locations above. */ | |
44702360 | 3060 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
3061 | } |
3062 | ||
74960c60 VP |
3063 | /* Make sure all breakpoints are inserted in inferior. |
3064 | Throws exception on any error. | |
3065 | A breakpoint that is already inserted won't be inserted | |
3066 | again, so calling this function twice is safe. */ | |
3067 | void | |
3068 | insert_breakpoints (void) | |
3069 | { | |
43892fdf | 3070 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 3071 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
3072 | { |
3073 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3074 | ||
d8de7963 | 3075 | update_watchpoint (w, false /* don't reparse. */); |
3a5c3e22 | 3076 | } |
74960c60 | 3077 | |
04086b45 PA |
3078 | /* Updating watchpoints creates new locations, so update the global |
3079 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
3080 | ignore breakpoints_always_inserted_mode. Also, |
3081 | update_global_location_list tries to "upgrade" software | |
3082 | breakpoints to hardware breakpoints to handle "set breakpoint | |
3083 | auto-hw", so we need to call it even if we don't have new | |
3084 | locations. */ | |
04086b45 | 3085 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
3086 | } |
3087 | ||
b775012e LM |
3088 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3089 | target. It is the case with deleting and disabling of breakpoints when using | |
3090 | always-inserted mode. */ | |
3091 | ||
3092 | static void | |
3093 | update_inserted_breakpoint_locations (void) | |
3094 | { | |
b775012e LM |
3095 | int error_flag = 0; |
3096 | int val = 0; | |
3097 | int disabled_breaks = 0; | |
3098 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3099 | int hw_bp_details_reported = 0; |
b775012e | 3100 | |
d7e74731 | 3101 | string_file tmp_error_stream; |
b775012e LM |
3102 | |
3103 | /* Explicitly mark the warning -- this will only be printed if | |
3104 | there was an error. */ | |
d7e74731 | 3105 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 3106 | |
5ed8105e | 3107 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 3108 | |
48d7020b | 3109 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
3110 | { |
3111 | /* We only want to update software breakpoints and hardware | |
3112 | breakpoints. */ | |
3113 | if (!is_breakpoint (bl->owner)) | |
3114 | continue; | |
3115 | ||
3116 | /* We only want to update locations that are already inserted | |
3117 | and need updating. This is to avoid unwanted insertion during | |
3118 | deletion of breakpoints. */ | |
4daf1902 | 3119 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
3120 | continue; |
3121 | ||
3122 | switch_to_program_space_and_thread (bl->pspace); | |
3123 | ||
3124 | /* For targets that support global breakpoints, there's no need | |
3125 | to select an inferior to insert breakpoint to. In fact, even | |
3126 | if we aren't attached to any process yet, we should still | |
3127 | insert breakpoints. */ | |
f5656ead | 3128 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3129 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
3130 | continue; |
3131 | ||
d7e74731 | 3132 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3133 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3134 | if (val) |
3135 | error_flag = val; | |
3136 | } | |
3137 | ||
3138 | if (error_flag) | |
3139 | { | |
223ffa71 | 3140 | target_terminal::ours_for_output (); |
b775012e LM |
3141 | error_stream (tmp_error_stream); |
3142 | } | |
b775012e LM |
3143 | } |
3144 | ||
c30eee59 | 3145 | /* Used when starting or continuing the program. */ |
c906108c | 3146 | |
74960c60 VP |
3147 | static void |
3148 | insert_breakpoint_locations (void) | |
c906108c | 3149 | { |
eacd795a | 3150 | int error_flag = 0; |
c906108c | 3151 | int val = 0; |
3fbb6ffa | 3152 | int disabled_breaks = 0; |
81d0cc19 | 3153 | int hw_breakpoint_error = 0; |
dd61ec5c | 3154 | int hw_bp_error_explained_already = 0; |
c906108c | 3155 | |
d7e74731 PA |
3156 | string_file tmp_error_stream; |
3157 | ||
81d0cc19 GS |
3158 | /* Explicitly mark the warning -- this will only be printed if |
3159 | there was an error. */ | |
d7e74731 | 3160 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3161 | |
5ed8105e | 3162 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3163 | |
48d7020b | 3164 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3165 | { |
b775012e | 3166 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3167 | continue; |
3168 | ||
4a64f543 MS |
3169 | /* There is no point inserting thread-specific breakpoints if |
3170 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3171 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3172 | if (bl->owner->thread != -1 |
5d5658a1 | 3173 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3174 | continue; |
3175 | ||
35df4500 | 3176 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3177 | |
3178 | /* For targets that support global breakpoints, there's no need | |
3179 | to select an inferior to insert breakpoint to. In fact, even | |
3180 | if we aren't attached to any process yet, we should still | |
3181 | insert breakpoints. */ | |
f5656ead | 3182 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3183 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3184 | continue; |
3185 | ||
d7e74731 | 3186 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3187 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3188 | if (val) |
eacd795a | 3189 | error_flag = val; |
879bfdc2 | 3190 | } |
c906108c | 3191 | |
4a64f543 MS |
3192 | /* If we failed to insert all locations of a watchpoint, remove |
3193 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3194 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee | 3195 | { |
d8de7963 | 3196 | bool some_failed = false; |
a5606eee VP |
3197 | |
3198 | if (!is_hardware_watchpoint (bpt)) | |
3199 | continue; | |
3200 | ||
d6b74ac4 | 3201 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3202 | continue; |
74960c60 VP |
3203 | |
3204 | if (bpt->disposition == disp_del_at_next_stop) | |
3205 | continue; | |
a5606eee | 3206 | |
40cb8ca5 | 3207 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3208 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee | 3209 | { |
d8de7963 | 3210 | some_failed = true; |
a5606eee VP |
3211 | break; |
3212 | } | |
40cb8ca5 | 3213 | |
a5606eee VP |
3214 | if (some_failed) |
3215 | { | |
40cb8ca5 | 3216 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3217 | if (loc->inserted) |
834c0d03 | 3218 | remove_breakpoint (loc); |
a5606eee VP |
3219 | |
3220 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3221 | tmp_error_stream.printf ("Could not insert " |
3222 | "hardware watchpoint %d.\n", | |
3223 | bpt->number); | |
eacd795a | 3224 | error_flag = -1; |
a5606eee VP |
3225 | } |
3226 | } | |
3227 | ||
eacd795a | 3228 | if (error_flag) |
81d0cc19 GS |
3229 | { |
3230 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3231 | message about possibly exhausted resources. */ |
dd61ec5c | 3232 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3233 | { |
d7e74731 | 3234 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3235 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3236 | } |
223ffa71 | 3237 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3238 | error_stream (tmp_error_stream); |
3239 | } | |
c906108c SS |
3240 | } |
3241 | ||
c30eee59 TJB |
3242 | /* Used when the program stops. |
3243 | Returns zero if successful, or non-zero if there was a problem | |
3244 | removing a breakpoint location. */ | |
3245 | ||
c906108c | 3246 | int |
fba45db2 | 3247 | remove_breakpoints (void) |
c906108c | 3248 | { |
3a1bae8e | 3249 | int val = 0; |
c906108c | 3250 | |
48d7020b | 3251 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3252 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3253 | val |= remove_breakpoint (bl); |
01add95b | 3254 | |
3a1bae8e | 3255 | return val; |
c906108c SS |
3256 | } |
3257 | ||
49fa26b0 PA |
3258 | /* When a thread exits, remove breakpoints that are related to |
3259 | that thread. */ | |
3260 | ||
3261 | static void | |
3262 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3263 | { | |
1428b37a | 3264 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3265 | { |
5d5658a1 | 3266 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 | 3267 | { |
6cb06a8c | 3268 | gdb_printf (_("\ |
43792cf0 | 3269 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3270 | b->number, print_thread_id (tp)); |
2968b79f | 3271 | delete_breakpoint (b); |
49fa26b0 PA |
3272 | } |
3273 | } | |
3274 | } | |
3275 | ||
f3869b1a | 3276 | /* See breakpoint.h. */ |
6c95b8df | 3277 | |
f3869b1a | 3278 | void |
00431a78 | 3279 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3280 | { |
6c95b8df | 3281 | int val; |
6c95b8df | 3282 | |
48d7020b | 3283 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3284 | { |
3285 | if (bl->pspace != inf->pspace) | |
3286 | continue; | |
6c95b8df | 3287 | |
01add95b SM |
3288 | if (bl->inserted && !bl->target_info.persist) |
3289 | { | |
3290 | val = remove_breakpoint (bl); | |
3291 | if (val != 0) | |
3292 | return; | |
3293 | } | |
3294 | } | |
6c95b8df PA |
3295 | } |
3296 | ||
e58b0e63 PA |
3297 | static int internal_breakpoint_number = -1; |
3298 | ||
84f4c1fe PM |
3299 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3300 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3301 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3302 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3303 | breakpoint_count and that value incremented. Internal breakpoints |
3304 | do not set the internal var bpnum. */ | |
3305 | static void | |
3306 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3307 | { | |
3308 | if (internal) | |
3309 | b->number = internal_breakpoint_number--; | |
3310 | else | |
3311 | { | |
3312 | set_breakpoint_count (breakpoint_count + 1); | |
3313 | b->number = breakpoint_count; | |
3314 | } | |
3315 | } | |
3316 | ||
829b6b37 TV |
3317 | /* Create a TYPE breakpoint on ADDRESS from an object file with GDBARCH. */ |
3318 | ||
e62c965a | 3319 | static struct breakpoint * |
a6d9a66e | 3320 | create_internal_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 3321 | CORE_ADDR address, enum bptype type) |
e62c965a | 3322 | { |
752a2291 PA |
3323 | std::unique_ptr<internal_breakpoint> b |
3324 | (new internal_breakpoint (gdbarch, type, address)); | |
e62c965a | 3325 | |
e62c965a | 3326 | b->number = internal_breakpoint_number--; |
e62c965a | 3327 | |
752a2291 | 3328 | return add_to_breakpoint_chain (std::move (b)); |
e62c965a PP |
3329 | } |
3330 | ||
829b6b37 TV |
3331 | /* Create a TYPE breakpoint on minimal symbol MSYM from an object file with |
3332 | GDBARCH. */ | |
3333 | ||
3334 | static struct breakpoint * | |
3335 | create_internal_breakpoint (struct gdbarch *gdbarch, | |
3336 | struct bound_minimal_symbol &msym, enum bptype type) | |
3337 | { | |
3338 | CORE_ADDR address; | |
3339 | ||
3340 | address = msym.value_address (); | |
3341 | ||
3342 | address = gdbarch_convert_from_func_ptr_addr | |
3343 | (gdbarch, address, current_inferior ()->top_target ()); | |
3344 | ||
3345 | /* Note that we're not using gdbarch_addr_bits_remove here, because that's | |
3346 | related to addresses in $pc. We're getting the address from the | |
3347 | minimal symbol table. */ | |
3348 | ||
3349 | /* Is gdbarch_deprecated_function_start_offset needed here? Or is that dealt | |
3350 | with elsewhere? Needs testing on vax. */ | |
3351 | ||
3352 | if (gdbarch_skip_entrypoint_p (gdbarch)) | |
3353 | address = gdbarch_skip_entrypoint (gdbarch, address); | |
3354 | ||
3355 | return create_internal_breakpoint (gdbarch, address, type); | |
3356 | } | |
3357 | ||
17450429 PP |
3358 | static const char *const longjmp_names[] = |
3359 | { | |
3360 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3361 | }; | |
3362 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3363 | ||
3364 | /* Per-objfile data private to breakpoint.c. */ | |
3365 | struct breakpoint_objfile_data | |
3366 | { | |
3367 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3368 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3369 | |
3370 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3371 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3372 | |
28106bc2 | 3373 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3374 | int longjmp_searched = 0; |
28106bc2 | 3375 | |
45461e0d SM |
3376 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3377 | references. */ | |
3378 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3379 | |
17450429 | 3380 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3381 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3382 | |
3383 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3384 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3385 | |
3386 | /* True if we have looked for exception probes. */ | |
43dce439 | 3387 | int exception_searched = 0; |
28106bc2 | 3388 | |
45461e0d SM |
3389 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3390 | references. */ | |
3391 | std::vector<probe *> exception_probes; | |
17450429 PP |
3392 | }; |
3393 | ||
08b8a139 | 3394 | static const registry<objfile>::key<breakpoint_objfile_data> |
51d3063a | 3395 | breakpoint_objfile_key; |
17450429 PP |
3396 | |
3397 | /* Minimal symbol not found sentinel. */ | |
3398 | static struct minimal_symbol msym_not_found; | |
3399 | ||
3400 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3401 | ||
d8de7963 | 3402 | static bool |
17450429 PP |
3403 | msym_not_found_p (const struct minimal_symbol *msym) |
3404 | { | |
3405 | return msym == &msym_not_found; | |
3406 | } | |
3407 | ||
3408 | /* Return per-objfile data needed by breakpoint.c. | |
3409 | Allocate the data if necessary. */ | |
3410 | ||
3411 | static struct breakpoint_objfile_data * | |
3412 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3413 | { | |
3414 | struct breakpoint_objfile_data *bp_objfile_data; | |
3415 | ||
51d3063a | 3416 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3417 | if (bp_objfile_data == NULL) |
51d3063a | 3418 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3419 | return bp_objfile_data; |
3420 | } | |
3421 | ||
e62c965a | 3422 | static void |
af02033e | 3423 | create_overlay_event_breakpoint (void) |
e62c965a | 3424 | { |
af02033e | 3425 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3426 | |
2030c079 | 3427 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3428 | { |
3429 | struct breakpoint *b; | |
17450429 PP |
3430 | struct breakpoint_objfile_data *bp_objfile_data; |
3431 | CORE_ADDR addr; | |
69de3c6a | 3432 | |
17450429 PP |
3433 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3434 | ||
3b7344d5 | 3435 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3436 | continue; |
3437 | ||
3b7344d5 | 3438 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3439 | { |
3b7344d5 | 3440 | struct bound_minimal_symbol m; |
17450429 PP |
3441 | |
3442 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3443 | if (m.minsym == NULL) |
17450429 PP |
3444 | { |
3445 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3446 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3447 | continue; |
3448 | } | |
3449 | bp_objfile_data->overlay_msym = m; | |
3450 | } | |
e62c965a | 3451 | |
4aeddc50 | 3452 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3453 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3454 | bp_overlay_event); |
40d97ee2 | 3455 | b->locspec = new_explicit_location_spec_function (func_name); |
e62c965a | 3456 | |
69de3c6a | 3457 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3458 | { |
3459 | b->enable_state = bp_enabled; | |
3460 | overlay_events_enabled = 1; | |
3461 | } | |
69de3c6a PP |
3462 | else |
3463 | { | |
dda83cd7 SM |
3464 | b->enable_state = bp_disabled; |
3465 | overlay_events_enabled = 0; | |
69de3c6a | 3466 | } |
e62c965a | 3467 | } |
e62c965a PP |
3468 | } |
3469 | ||
2a7f6487 TV |
3470 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3471 | true if a breakpoint was installed. */ | |
3472 | ||
3473 | static bool | |
3474 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3475 | { |
2a7f6487 TV |
3476 | struct gdbarch *gdbarch = objfile->arch (); |
3477 | struct breakpoint_objfile_data *bp_objfile_data | |
3478 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3479 | |
2a7f6487 | 3480 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3481 | { |
2a7f6487 TV |
3482 | std::vector<probe *> ret |
3483 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3484 | |
2a7f6487 | 3485 | if (!ret.empty ()) |
94c93c35 | 3486 | { |
2a7f6487 TV |
3487 | /* We are only interested in checking one element. */ |
3488 | probe *p = ret[0]; | |
0fd8e87f | 3489 | |
2a7f6487 TV |
3490 | if (!p->can_evaluate_arguments ()) |
3491 | { | |
3492 | /* We cannot use the probe interface here, | |
3493 | because it does not know how to evaluate | |
3494 | arguments. */ | |
3495 | ret.clear (); | |
3496 | } | |
3497 | } | |
3498 | bp_objfile_data->longjmp_probes = ret; | |
3499 | bp_objfile_data->longjmp_searched = 1; | |
3500 | } | |
0fd8e87f | 3501 | |
2a7f6487 TV |
3502 | if (bp_objfile_data->longjmp_probes.empty ()) |
3503 | return false; | |
17450429 | 3504 | |
2a7f6487 TV |
3505 | for (probe *p : bp_objfile_data->longjmp_probes) |
3506 | { | |
3507 | struct breakpoint *b; | |
25f9533e | 3508 | |
2a7f6487 TV |
3509 | b = create_internal_breakpoint (gdbarch, |
3510 | p->get_relocated_address (objfile), | |
9efa3c7f | 3511 | bp_longjmp_master); |
264f9890 | 3512 | b->locspec = new_probe_location_spec ("-probe-stap libc:longjmp"); |
2a7f6487 TV |
3513 | b->enable_state = bp_disabled; |
3514 | } | |
aed57c53 | 3515 | |
2a7f6487 TV |
3516 | return true; |
3517 | } | |
25f9533e | 3518 | |
2a7f6487 TV |
3519 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3520 | Return true if at least one breakpoint was installed. */ | |
3521 | ||
3522 | static bool | |
3523 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3524 | { | |
3525 | struct gdbarch *gdbarch = objfile->arch (); | |
3526 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3527 | return false; | |
3528 | ||
3529 | struct breakpoint_objfile_data *bp_objfile_data | |
3530 | = get_breakpoint_objfile_data (objfile); | |
3531 | unsigned int installed_bp = 0; | |
3532 | ||
3533 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3534 | { | |
3535 | struct breakpoint *b; | |
3536 | const char *func_name; | |
3537 | CORE_ADDR addr; | |
2a7f6487 TV |
3538 | |
3539 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3540 | continue; | |
28106bc2 | 3541 | |
2a7f6487 TV |
3542 | func_name = longjmp_names[i]; |
3543 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3544 | { | |
3545 | struct bound_minimal_symbol m; | |
3546 | ||
3547 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3548 | if (m.minsym == NULL) | |
3549 | { | |
3550 | /* Prevent future lookups in this objfile. */ | |
3551 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3552 | continue; |
3553 | } | |
2a7f6487 TV |
3554 | bp_objfile_data->longjmp_msym[i] = m; |
3555 | } | |
28106bc2 | 3556 | |
4aeddc50 | 3557 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
9efa3c7f | 3558 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); |
40d97ee2 | 3559 | b->locspec = new_explicit_location_spec_function (func_name); |
2a7f6487 TV |
3560 | b->enable_state = bp_disabled; |
3561 | installed_bp++; | |
3562 | } | |
28106bc2 | 3563 | |
2a7f6487 TV |
3564 | return installed_bp > 0; |
3565 | } | |
0fd8e87f | 3566 | |
2a7f6487 | 3567 | /* Create a master longjmp breakpoint. */ |
17450429 | 3568 | |
2a7f6487 TV |
3569 | static void |
3570 | create_longjmp_master_breakpoint (void) | |
3571 | { | |
3572 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3573 | |
2a7f6487 TV |
3574 | for (struct program_space *pspace : program_spaces) |
3575 | { | |
3576 | set_current_program_space (pspace); | |
17450429 | 3577 | |
2a7f6487 TV |
3578 | for (objfile *obj : current_program_space->objfiles ()) |
3579 | { | |
3580 | /* Skip separate debug object, it's handled in the loop below. */ | |
3581 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3582 | continue; | |
3583 | ||
3584 | /* Try a probe kind breakpoint on main objfile. */ | |
3585 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3586 | continue; | |
3587 | ||
3588 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3589 | objfiles. */ | |
3590 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3591 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3592 | break; | |
94c93c35 TT |
3593 | } |
3594 | } | |
0fd8e87f UW |
3595 | } |
3596 | ||
af02033e | 3597 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3598 | static void |
af02033e | 3599 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3600 | { |
af02033e | 3601 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3602 | |
5ed8105e | 3603 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3604 | |
94c93c35 TT |
3605 | for (struct program_space *pspace : program_spaces) |
3606 | { | |
94c93c35 | 3607 | set_current_program_space (pspace); |
17450429 | 3608 | |
94c93c35 TT |
3609 | for (objfile *objfile : current_program_space->objfiles ()) |
3610 | { | |
3611 | struct breakpoint *b; | |
3612 | struct breakpoint_objfile_data *bp_objfile_data; | |
aa7d318d | 3613 | |
94c93c35 | 3614 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3615 | |
94c93c35 TT |
3616 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3617 | continue; | |
17450429 | 3618 | |
94c93c35 TT |
3619 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3620 | { | |
3621 | struct bound_minimal_symbol m; | |
17450429 | 3622 | |
94c93c35 | 3623 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3624 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3625 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3626 | { |
3627 | /* Prevent future lookups in this objfile. */ | |
3628 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3629 | continue; | |
3630 | } | |
3631 | bp_objfile_data->terminate_msym = m; | |
3632 | } | |
aa7d318d | 3633 | |
829b6b37 TV |
3634 | b = create_internal_breakpoint (objfile->arch (), |
3635 | bp_objfile_data->terminate_msym, | |
9efa3c7f | 3636 | bp_std_terminate_master); |
40d97ee2 | 3637 | b->locspec = new_explicit_location_spec_function (func_name); |
94c93c35 TT |
3638 | b->enable_state = bp_disabled; |
3639 | } | |
3640 | } | |
aa7d318d TT |
3641 | } |
3642 | ||
1940319c TV |
3643 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3644 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3645 | |
1940319c TV |
3646 | static bool |
3647 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3648 | { |
1940319c TV |
3649 | struct breakpoint *b; |
3650 | struct gdbarch *gdbarch; | |
3651 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3652 | |
1940319c | 3653 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3654 | |
1940319c TV |
3655 | /* We prefer the SystemTap probe point if it exists. */ |
3656 | if (!bp_objfile_data->exception_searched) | |
3657 | { | |
3658 | std::vector<probe *> ret | |
3659 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3660 | |
1940319c | 3661 | if (!ret.empty ()) |
28106bc2 | 3662 | { |
1940319c TV |
3663 | /* We are only interested in checking one element. */ |
3664 | probe *p = ret[0]; | |
25f9533e | 3665 | |
1940319c | 3666 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3667 | { |
1940319c TV |
3668 | /* We cannot use the probe interface here, because it does |
3669 | not know how to evaluate arguments. */ | |
3670 | ret.clear (); | |
25f9533e | 3671 | } |
28106bc2 | 3672 | } |
1940319c TV |
3673 | bp_objfile_data->exception_probes = ret; |
3674 | bp_objfile_data->exception_searched = 1; | |
3675 | } | |
28106bc2 | 3676 | |
1940319c TV |
3677 | if (bp_objfile_data->exception_probes.empty ()) |
3678 | return false; | |
45461e0d | 3679 | |
1940319c | 3680 | gdbarch = objfile->arch (); |
28106bc2 | 3681 | |
1940319c TV |
3682 | for (probe *p : bp_objfile_data->exception_probes) |
3683 | { | |
3684 | b = create_internal_breakpoint (gdbarch, | |
3685 | p->get_relocated_address (objfile), | |
9efa3c7f | 3686 | bp_exception_master); |
264f9890 | 3687 | b->locspec = new_probe_location_spec ("-probe-stap libgcc:unwind"); |
1940319c TV |
3688 | b->enable_state = bp_disabled; |
3689 | } | |
28106bc2 | 3690 | |
1940319c TV |
3691 | return true; |
3692 | } | |
28106bc2 | 3693 | |
1940319c TV |
3694 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3695 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3696 | |
1940319c TV |
3697 | static bool |
3698 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3699 | { | |
3700 | const char *const func_name = "_Unwind_DebugHook"; | |
3701 | struct breakpoint *b; | |
3702 | struct gdbarch *gdbarch; | |
3703 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3704 | |
1940319c | 3705 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3706 | |
1940319c TV |
3707 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3708 | return false; | |
17450429 | 3709 | |
1940319c TV |
3710 | gdbarch = objfile->arch (); |
3711 | ||
3712 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3713 | { | |
3714 | struct bound_minimal_symbol debug_hook; | |
3715 | ||
3716 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3717 | if (debug_hook.minsym == NULL) | |
3718 | { | |
3719 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3720 | return false; | |
186c406b | 3721 | } |
17450429 | 3722 | |
1940319c TV |
3723 | bp_objfile_data->exception_msym = debug_hook; |
3724 | } | |
3725 | ||
829b6b37 TV |
3726 | b = create_internal_breakpoint (gdbarch, bp_objfile_data->exception_msym, |
3727 | bp_exception_master); | |
40d97ee2 | 3728 | b->locspec = new_explicit_location_spec_function (func_name); |
1940319c TV |
3729 | b->enable_state = bp_disabled; |
3730 | ||
3731 | return true; | |
3732 | } | |
3733 | ||
3734 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3735 | ||
3736 | static void | |
3737 | create_exception_master_breakpoint (void) | |
3738 | { | |
3739 | for (objfile *obj : current_program_space->objfiles ()) | |
3740 | { | |
3741 | /* Skip separate debug object. */ | |
3742 | if (obj->separate_debug_objfile_backlink) | |
3743 | continue; | |
3744 | ||
3745 | /* Try a probe kind breakpoint. */ | |
3746 | if (create_exception_master_breakpoint_probe (obj)) | |
3747 | continue; | |
3748 | ||
7c6944ab TV |
3749 | /* Iterate over main and separate debug objects and try an |
3750 | _Unwind_DebugHook kind breakpoint. */ | |
3751 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3752 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3753 | break; |
186c406b | 3754 | } |
186c406b TT |
3755 | } |
3756 | ||
9ef9e6a6 KS |
3757 | /* Does B have a location spec? */ |
3758 | ||
d8de7963 | 3759 | static bool |
264f9890 | 3760 | breakpoint_location_spec_empty_p (const struct breakpoint *b) |
9ef9e6a6 | 3761 | { |
238dc9af | 3762 | return (b->locspec != nullptr && b->locspec->empty_p ()); |
9ef9e6a6 KS |
3763 | } |
3764 | ||
c906108c | 3765 | void |
fba45db2 | 3766 | update_breakpoints_after_exec (void) |
c906108c | 3767 | { |
25b22b0a PA |
3768 | /* We're about to delete breakpoints from GDB's lists. If the |
3769 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3770 | writing the breakpoints' "shadow contents" back into memory. The | |
3771 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3772 | do that. Instead, the target is responsible from marking | |
3773 | breakpoints out as soon as it detects an exec. We don't do that | |
3774 | here instead, because there may be other attempts to delete | |
3775 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3776 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3777 | if (bploc->pspace == current_program_space) |
3778 | gdb_assert (!bploc->inserted); | |
c906108c | 3779 | |
1428b37a | 3780 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3781 | { |
3782 | if (b->pspace != current_program_space) | |
c5aa993b | 3783 | continue; |
c906108c | 3784 | |
01add95b SM |
3785 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3786 | if (b->type == bp_shlib_event) | |
3787 | { | |
3788 | delete_breakpoint (b); | |
3789 | continue; | |
3790 | } | |
4efc6507 | 3791 | |
01add95b SM |
3792 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3793 | if (b->type == bp_jit_event) | |
3794 | { | |
3795 | delete_breakpoint (b); | |
3796 | continue; | |
3797 | } | |
c4093a6a | 3798 | |
01add95b SM |
3799 | /* Thread event breakpoints must be set anew after an exec(), |
3800 | as must overlay event and longjmp master breakpoints. */ | |
3801 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3802 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3803 | || b->type == bp_exception_master) | |
3804 | { | |
3805 | delete_breakpoint (b); | |
3806 | continue; | |
3807 | } | |
c5aa993b | 3808 | |
01add95b SM |
3809 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3810 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3811 | { | |
3812 | delete_breakpoint (b); | |
3813 | continue; | |
3814 | } | |
7c16b83e | 3815 | |
01add95b SM |
3816 | /* Just like single-step breakpoints. */ |
3817 | if (b->type == bp_single_step) | |
3818 | { | |
3819 | delete_breakpoint (b); | |
3820 | continue; | |
3821 | } | |
611c83ae | 3822 | |
01add95b SM |
3823 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3824 | after an exec. */ | |
3825 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3826 | || b->type == bp_longjmp_call_dummy | |
3827 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3828 | { | |
3829 | delete_breakpoint (b); | |
3830 | continue; | |
3831 | } | |
ce78b96d | 3832 | |
01add95b SM |
3833 | if (b->type == bp_catchpoint) |
3834 | { | |
3835 | /* For now, none of the bp_catchpoint breakpoints need to | |
3836 | do anything at this point. In the future, if some of | |
3837 | the catchpoints need to something, we will need to add | |
3838 | a new method, and call this method from here. */ | |
3839 | continue; | |
3840 | } | |
c5aa993b | 3841 | |
01add95b SM |
3842 | /* bp_finish is a special case. The only way we ought to be able |
3843 | to see one of these when an exec() has happened, is if the user | |
3844 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3845 | carries them to the call-site of the current callee, by setting | |
3846 | a temporary bp there and resuming. But in this case, the finish | |
3847 | will carry them entirely through the vfork & exec. | |
3848 | ||
3849 | We don't want to allow a bp_finish to remain inserted now. But | |
3850 | we can't safely delete it, 'cause finish_command has a handle to | |
3851 | the bp on a bpstat, and will later want to delete it. There's a | |
3852 | chance (and I've seen it happen) that if we delete the bp_finish | |
3853 | here, that its storage will get reused by the time finish_command | |
3854 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3855 | We really must allow finish_command to delete a bp_finish. | |
3856 | ||
3857 | In the absence of a general solution for the "how do we know | |
3858 | it's safe to delete something others may have handles to?" | |
3859 | problem, what we'll do here is just uninsert the bp_finish, and | |
3860 | let finish_command delete it. | |
3861 | ||
3862 | (We know the bp_finish is "doomed" in the sense that it's | |
3863 | momentary, and will be deleted as soon as finish_command sees | |
3864 | the inferior stopped. So it doesn't matter that the bp's | |
3865 | address is probably bogus in the new a.out, unlike e.g., the | |
3866 | solib breakpoints.) */ | |
3867 | ||
3868 | if (b->type == bp_finish) | |
3869 | { | |
3870 | continue; | |
3871 | } | |
3872 | ||
3873 | /* Without a symbolic address, we have little hope of the | |
3874 | pre-exec() address meaning the same thing in the post-exec() | |
3875 | a.out. */ | |
264f9890 | 3876 | if (breakpoint_location_spec_empty_p (b)) |
01add95b SM |
3877 | { |
3878 | delete_breakpoint (b); | |
3879 | continue; | |
3880 | } | |
3881 | } | |
c906108c SS |
3882 | } |
3883 | ||
3884 | int | |
d80ee84f | 3885 | detach_breakpoints (ptid_t ptid) |
c906108c | 3886 | { |
3a1bae8e | 3887 | int val = 0; |
2989a365 | 3888 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3889 | struct inferior *inf = current_inferior (); |
c5aa993b | 3890 | |
e99b03dc | 3891 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3892 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3893 | |
6c95b8df | 3894 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3895 | inferior_ptid = ptid; |
48d7020b | 3896 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3897 | { |
3898 | if (bl->pspace != inf->pspace) | |
3899 | continue; | |
3900 | ||
3901 | /* This function must physically remove breakpoints locations | |
3902 | from the specified ptid, without modifying the breakpoint | |
6e14e441 PA |
3903 | package's state. Locations of type bp_loc_other and |
3904 | bp_loc_software_watchpoint are only maintained at GDB side, | |
3905 | so there is no need to remove them. Moreover, removing these | |
01add95b | 3906 | would modify the breakpoint package's state. */ |
6e14e441 PA |
3907 | if (bl->loc_type == bp_loc_other |
3908 | || bl->loc_type == bp_loc_software_watchpoint) | |
01add95b SM |
3909 | continue; |
3910 | ||
3911 | if (bl->inserted) | |
3912 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3913 | } | |
d03285ec | 3914 | |
3a1bae8e | 3915 | return val; |
c906108c SS |
3916 | } |
3917 | ||
35df4500 | 3918 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3919 | Note that this is used to detach breakpoints from a child fork. |
3920 | When we get here, the child isn't in the inferior list, and neither | |
3921 | do we have objects to represent its address space --- we should | |
35df4500 | 3922 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3923 | |
c906108c | 3924 | static int |
b2b6a7da | 3925 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3926 | { |
3927 | int val; | |
c5aa993b | 3928 | |
35df4500 TJB |
3929 | /* BL is never in moribund_locations by our callers. */ |
3930 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3931 | |
74960c60 VP |
3932 | /* The type of none suggests that owner is actually deleted. |
3933 | This should not ever happen. */ | |
35df4500 | 3934 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3935 | |
35df4500 TJB |
3936 | if (bl->loc_type == bp_loc_software_breakpoint |
3937 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3938 | { |
c02f5703 MS |
3939 | /* "Normal" instruction breakpoint: either the standard |
3940 | trap-instruction bp (bp_breakpoint), or a | |
3941 | bp_hardware_breakpoint. */ | |
3942 | ||
3943 | /* First check to see if we have to handle an overlay. */ | |
3944 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3945 | || bl->section == NULL |
3946 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3947 | { |
3948 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3949 | |
3950 | /* If we're trying to uninsert a memory breakpoint that we | |
3951 | know is set in a dynamic object that is marked | |
3952 | shlib_disabled, then either the dynamic object was | |
3953 | removed with "remove-symbol-file" or with | |
3954 | "nosharedlibrary". In the former case, we don't know | |
3955 | whether another dynamic object might have loaded over the | |
3956 | breakpoint's address -- the user might well let us know | |
3957 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3958 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3959 | list of dynamically loaded objects). If we have the |
3960 | breakpoint's shadow memory, that is, this is a software | |
3961 | breakpoint managed by GDB, check whether the breakpoint | |
3962 | is still inserted in memory, to avoid overwriting wrong | |
3963 | code with stale saved shadow contents. Note that HW | |
3964 | breakpoints don't have shadow memory, as they're | |
3965 | implemented using a mechanism that is not dependent on | |
3966 | being able to modify the target's memory, and as such | |
3967 | they should always be removed. */ | |
3968 | if (bl->shlib_disabled | |
3969 | && bl->target_info.shadow_len != 0 | |
3970 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3971 | val = 0; | |
3972 | else | |
c47614fe | 3973 | val = bl->owner->remove_location (bl, reason); |
c02f5703 | 3974 | } |
c906108c SS |
3975 | else |
3976 | { | |
4a64f543 | 3977 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3978 | Did we set a breakpoint at the LMA? */ |
3979 | if (!overlay_events_enabled) | |
3980 | { | |
3981 | /* Yes -- overlay event support is not active, so we | |
3982 | should have set a breakpoint at the LMA. Remove it. | |
3983 | */ | |
c02f5703 MS |
3984 | /* Ignore any failures: if the LMA is in ROM, we will |
3985 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3986 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3987 | target_remove_hw_breakpoint (bl->gdbarch, | |
3988 | &bl->overlay_target_info); | |
c02f5703 | 3989 | else |
35df4500 | 3990 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3991 | &bl->overlay_target_info, |
3992 | reason); | |
c02f5703 MS |
3993 | } |
3994 | /* Did we set a breakpoint at the VMA? | |
3995 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3996 | if (bl->inserted) |
c906108c | 3997 | { |
c02f5703 MS |
3998 | /* Yes -- remove it. Previously we did not bother to |
3999 | remove the breakpoint if the section had been | |
4000 | unmapped, but let's not rely on that being safe. We | |
4001 | don't know what the overlay manager might do. */ | |
aa67235e UW |
4002 | |
4003 | /* However, we should remove *software* breakpoints only | |
4004 | if the section is still mapped, or else we overwrite | |
4005 | wrong code with the saved shadow contents. */ | |
348d480f PA |
4006 | if (bl->loc_type == bp_loc_hardware_breakpoint |
4007 | || section_is_mapped (bl->section)) | |
c47614fe | 4008 | val = bl->owner->remove_location (bl, reason); |
aa67235e UW |
4009 | else |
4010 | val = 0; | |
c906108c | 4011 | } |
c02f5703 MS |
4012 | else |
4013 | { | |
4014 | /* No -- not inserted, so no need to remove. No error. */ | |
4015 | val = 0; | |
4016 | } | |
c906108c | 4017 | } |
879d1e6b | 4018 | |
08351840 PA |
4019 | /* In some cases, we might not be able to remove a breakpoint in |
4020 | a shared library that has already been removed, but we have | |
4021 | not yet processed the shlib unload event. Similarly for an | |
4022 | unloaded add-symbol-file object - the user might not yet have | |
4023 | had the chance to remove-symbol-file it. shlib_disabled will | |
4024 | be set if the library/object has already been removed, but | |
4025 | the breakpoint hasn't been uninserted yet, e.g., after | |
4026 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
4027 | always-inserted mode. */ | |
076855f9 | 4028 | if (val |
08351840 PA |
4029 | && (bl->loc_type == bp_loc_software_breakpoint |
4030 | && (bl->shlib_disabled | |
4031 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
4032 | || shared_objfile_contains_address_p (bl->pspace, |
4033 | bl->address)))) | |
879d1e6b UW |
4034 | val = 0; |
4035 | ||
c906108c SS |
4036 | if (val) |
4037 | return val; | |
b2b6a7da | 4038 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 4039 | } |
35df4500 | 4040 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4041 | { |
b2b6a7da | 4042 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c47614fe | 4043 | bl->owner->remove_location (bl, reason); |
2e70b7b9 | 4044 | |
c906108c | 4045 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 4046 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 4047 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4048 | bl->owner->number); |
c906108c | 4049 | } |
35df4500 | 4050 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
4051 | && breakpoint_enabled (bl->owner) |
4052 | && !bl->duplicate) | |
ce78b96d | 4053 | { |
c47614fe | 4054 | val = bl->owner->remove_location (bl, reason); |
ce78b96d JB |
4055 | if (val) |
4056 | return val; | |
77b06cd7 | 4057 | |
b2b6a7da | 4058 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 4059 | } |
c906108c SS |
4060 | |
4061 | return 0; | |
4062 | } | |
4063 | ||
6c95b8df | 4064 | static int |
834c0d03 | 4065 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 4066 | { |
35df4500 TJB |
4067 | /* BL is never in moribund_locations by our callers. */ |
4068 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4069 | |
6c95b8df PA |
4070 | /* The type of none suggests that owner is actually deleted. |
4071 | This should not ever happen. */ | |
35df4500 | 4072 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 4073 | |
5ed8105e | 4074 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 4075 | |
35df4500 | 4076 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4077 | |
5ed8105e | 4078 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4079 | } |
4080 | ||
c906108c SS |
4081 | /* Clear the "inserted" flag in all breakpoints. */ |
4082 | ||
25b22b0a | 4083 | void |
fba45db2 | 4084 | mark_breakpoints_out (void) |
c906108c | 4085 | { |
48d7020b | 4086 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 4087 | if (bl->pspace == current_program_space) |
35df4500 | 4088 | bl->inserted = 0; |
c906108c SS |
4089 | } |
4090 | ||
53a5351d JM |
4091 | /* Clear the "inserted" flag in all breakpoints and delete any |
4092 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4093 | |
4094 | Plus other such housekeeping that has to be done for breakpoints | |
4095 | between runs. | |
4096 | ||
53a5351d JM |
4097 | Note: this function gets called at the end of a run (by |
4098 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4099 | init_wait_for_inferior). */ |
c906108c SS |
4100 | |
4101 | ||
4102 | ||
4103 | void | |
fba45db2 | 4104 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4105 | { |
6c95b8df | 4106 | struct program_space *pspace = current_program_space; |
c906108c | 4107 | |
50c71eaf PA |
4108 | /* If breakpoint locations are shared across processes, then there's |
4109 | nothing to do. */ | |
f5656ead | 4110 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4111 | return; |
4112 | ||
1a853c52 | 4113 | mark_breakpoints_out (); |
075f6582 | 4114 | |
1428b37a | 4115 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
4116 | { |
4117 | if (b->loc && b->loc->pspace != pspace) | |
4118 | continue; | |
6c95b8df | 4119 | |
01add95b SM |
4120 | switch (b->type) |
4121 | { | |
4122 | case bp_call_dummy: | |
4123 | case bp_longjmp_call_dummy: | |
c906108c | 4124 | |
01add95b SM |
4125 | /* If the call dummy breakpoint is at the entry point it will |
4126 | cause problems when the inferior is rerun, so we better get | |
4127 | rid of it. */ | |
ab92d69b | 4128 | |
01add95b | 4129 | case bp_watchpoint_scope: |
ab92d69b | 4130 | |
01add95b | 4131 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 4132 | |
01add95b | 4133 | case bp_shlib_event: |
ab92d69b | 4134 | |
01add95b SM |
4135 | /* Also remove solib event breakpoints. Their addresses may |
4136 | have changed since the last time we ran the program. | |
4137 | Actually we may now be debugging against different target; | |
4138 | and so the solib backend that installed this breakpoint may | |
4139 | not be used in by the target. E.g., | |
ab92d69b | 4140 | |
01add95b SM |
4141 | (gdb) file prog-linux |
4142 | (gdb) run # native linux target | |
4143 | ... | |
4144 | (gdb) kill | |
4145 | (gdb) file prog-win.exe | |
4146 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4147 | */ | |
c906108c | 4148 | |
01add95b | 4149 | case bp_step_resume: |
f59f708a | 4150 | |
01add95b | 4151 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4152 | |
01add95b | 4153 | case bp_single_step: |
7c16b83e | 4154 | |
01add95b | 4155 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4156 | |
01add95b SM |
4157 | delete_breakpoint (b); |
4158 | break; | |
c906108c | 4159 | |
01add95b SM |
4160 | case bp_watchpoint: |
4161 | case bp_hardware_watchpoint: | |
4162 | case bp_read_watchpoint: | |
4163 | case bp_access_watchpoint: | |
4164 | { | |
4165 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4166 | |
01add95b SM |
4167 | /* Likewise for watchpoints on local expressions. */ |
4168 | if (w->exp_valid_block != NULL) | |
4169 | delete_breakpoint (b); | |
4170 | else | |
4171 | { | |
4172 | /* Get rid of existing locations, which are no longer | |
4173 | valid. New ones will be created in | |
4174 | update_watchpoint, when the inferior is restarted. | |
4175 | The next update_global_location_list call will | |
4176 | garbage collect them. */ | |
4177 | b->loc = NULL; | |
4178 | ||
4179 | if (context == inf_starting) | |
4180 | { | |
4181 | /* Reset val field to force reread of starting value in | |
4182 | insert_breakpoints. */ | |
4183 | w->val.reset (nullptr); | |
4184 | w->val_valid = false; | |
4185 | } | |
4186 | } | |
4187 | } | |
4188 | break; | |
4189 | default: | |
4190 | break; | |
3a5c3e22 | 4191 | } |
01add95b | 4192 | } |
1c5cfe86 PA |
4193 | |
4194 | /* Get rid of the moribund locations. */ | |
1123588c | 4195 | for (bp_location *bl : moribund_locations) |
35df4500 | 4196 | decref_bp_location (&bl); |
1123588c | 4197 | moribund_locations.clear (); |
c906108c SS |
4198 | } |
4199 | ||
6c95b8df PA |
4200 | /* These functions concern about actual breakpoints inserted in the |
4201 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4202 | we need to hop over the bkpt --- so we check for address space | |
4203 | match, not program space. */ | |
4204 | ||
c2c6d25f JM |
4205 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4206 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4207 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4208 | permanent breakpoint. | |
4209 | - When continuing from a location with an ordinary breakpoint, we | |
4210 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4211 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4212 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4213 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4214 | |
c2c6d25f | 4215 | enum breakpoint_here |
accd0bcd | 4216 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4217 | { |
d8de7963 | 4218 | bool any_breakpoint_here = false; |
c906108c | 4219 | |
48d7020b | 4220 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4221 | { |
35df4500 TJB |
4222 | if (bl->loc_type != bp_loc_software_breakpoint |
4223 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4224 | continue; |
4225 | ||
f1310107 | 4226 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4227 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4228 | || bl->permanent) |
f1310107 | 4229 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4230 | { |
4231 | if (overlay_debugging | |
35df4500 TJB |
4232 | && section_is_overlay (bl->section) |
4233 | && !section_is_mapped (bl->section)) | |
075f6582 | 4234 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4235 | else if (bl->permanent) |
075f6582 DJ |
4236 | return permanent_breakpoint_here; |
4237 | else | |
d8de7963 | 4238 | any_breakpoint_here = true; |
075f6582 DJ |
4239 | } |
4240 | } | |
c906108c | 4241 | |
f486487f | 4242 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4243 | } |
4244 | ||
d35ae833 PA |
4245 | /* See breakpoint.h. */ |
4246 | ||
4247 | int | |
accd0bcd | 4248 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4249 | CORE_ADDR addr, ULONGEST len) |
4250 | { | |
48d7020b | 4251 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4252 | { |
4253 | if (bl->loc_type != bp_loc_software_breakpoint | |
4254 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4255 | continue; | |
4256 | ||
4257 | if ((breakpoint_enabled (bl->owner) | |
4258 | || bl->permanent) | |
4259 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4260 | addr, len)) | |
4261 | { | |
4262 | if (overlay_debugging | |
4263 | && section_is_overlay (bl->section) | |
4264 | && !section_is_mapped (bl->section)) | |
4265 | { | |
4266 | /* Unmapped overlay -- can't be a match. */ | |
4267 | continue; | |
4268 | } | |
4269 | ||
4270 | return 1; | |
4271 | } | |
4272 | } | |
4273 | ||
4274 | return 0; | |
4275 | } | |
4276 | ||
1c5cfe86 PA |
4277 | /* Return true if there's a moribund breakpoint at PC. */ |
4278 | ||
4279 | int | |
accd0bcd | 4280 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4281 | { |
1123588c | 4282 | for (bp_location *loc : moribund_locations) |
f1310107 | 4283 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4284 | return 1; |
4285 | ||
4286 | return 0; | |
4287 | } | |
c2c6d25f | 4288 | |
d8de7963 | 4289 | /* Returns true iff BL is inserted at PC, in address space ASPACE. */ |
f7ce857f | 4290 | |
d8de7963 | 4291 | static bool |
b2ff9ed3 | 4292 | bp_location_inserted_here_p (const struct bp_location *bl, |
accd0bcd | 4293 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4294 | { |
4295 | if (bl->inserted | |
4296 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4297 | aspace, pc)) | |
4298 | { | |
d8de7963 AB |
4299 | /* An unmapped overlay can't be a match. */ |
4300 | return !(overlay_debugging | |
4301 | && section_is_overlay (bl->section) | |
4302 | && !section_is_mapped (bl->section)); | |
f7ce857f | 4303 | } |
d8de7963 | 4304 | return false; |
f7ce857f PA |
4305 | } |
4306 | ||
a1fd2fa5 | 4307 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4308 | |
4309 | int | |
accd0bcd | 4310 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4311 | { |
e0d9a270 | 4312 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4313 | { |
35df4500 TJB |
4314 | if (bl->loc_type != bp_loc_software_breakpoint |
4315 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4316 | continue; |
4317 | ||
f7ce857f PA |
4318 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4319 | return 1; | |
c5aa993b | 4320 | } |
c36b740a VP |
4321 | return 0; |
4322 | } | |
4323 | ||
a1fd2fa5 PA |
4324 | /* This function returns non-zero iff there is a software breakpoint |
4325 | inserted at PC. */ | |
c36b740a VP |
4326 | |
4327 | int | |
accd0bcd | 4328 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4329 | CORE_ADDR pc) |
4fa8626c | 4330 | { |
e0d9a270 | 4331 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4332 | { |
35df4500 | 4333 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4334 | continue; |
4335 | ||
f7ce857f PA |
4336 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4337 | return 1; | |
4fa8626c DJ |
4338 | } |
4339 | ||
4340 | return 0; | |
9c02b525 PA |
4341 | } |
4342 | ||
4343 | /* See breakpoint.h. */ | |
4344 | ||
4345 | int | |
accd0bcd | 4346 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4347 | CORE_ADDR pc) |
4348 | { | |
e0d9a270 | 4349 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4350 | { |
9c02b525 PA |
4351 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4352 | continue; | |
4353 | ||
4354 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4355 | return 1; | |
4356 | } | |
4357 | ||
4358 | return 0; | |
4fa8626c DJ |
4359 | } |
4360 | ||
9093389c | 4361 | int |
accd0bcd | 4362 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4363 | CORE_ADDR addr, ULONGEST len) |
4364 | { | |
43892fdf | 4365 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4366 | { |
9093389c PA |
4367 | if (bpt->type != bp_hardware_watchpoint |
4368 | && bpt->type != bp_access_watchpoint) | |
4369 | continue; | |
4370 | ||
4371 | if (!breakpoint_enabled (bpt)) | |
4372 | continue; | |
4373 | ||
40cb8ca5 | 4374 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4375 | if (loc->pspace->aspace == aspace && loc->inserted) |
4376 | { | |
4377 | CORE_ADDR l, h; | |
4378 | ||
4379 | /* Check for intersection. */ | |
768adc05 PA |
4380 | l = std::max<CORE_ADDR> (loc->address, addr); |
4381 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4382 | if (l < h) |
4383 | return 1; | |
4384 | } | |
4385 | } | |
4386 | return 0; | |
4387 | } | |
c5aa993b | 4388 | |
f2478a7e | 4389 | /* See breakpoint.h. */ |
c906108c | 4390 | |
f2478a7e SM |
4391 | bool |
4392 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4393 | { |
f2478a7e | 4394 | return (b->type == bp_catchpoint); |
c906108c SS |
4395 | } |
4396 | ||
c906108c SS |
4397 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4398 | Also free any storage that is part of a bpstat. */ | |
4399 | ||
4400 | void | |
313f3b21 | 4401 | bpstat_clear (bpstat **bsp) |
c906108c | 4402 | { |
313f3b21 SM |
4403 | bpstat *p; |
4404 | bpstat *q; | |
c906108c SS |
4405 | |
4406 | if (bsp == 0) | |
4407 | return; | |
4408 | p = *bsp; | |
4409 | while (p != NULL) | |
4410 | { | |
4411 | q = p->next; | |
04afa70c | 4412 | delete p; |
c906108c SS |
4413 | p = q; |
4414 | } | |
4415 | *bsp = NULL; | |
4416 | } | |
4417 | ||
313f3b21 | 4418 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4419 | : next (NULL), |
4420 | bp_location_at (other.bp_location_at), | |
4421 | breakpoint_at (other.breakpoint_at), | |
4422 | commands (other.commands), | |
04afa70c TT |
4423 | print (other.print), |
4424 | stop (other.stop), | |
4425 | print_it (other.print_it) | |
4426 | { | |
850645cf | 4427 | if (other.old_val != NULL) |
f28085df | 4428 | old_val = release_value (other.old_val->copy ()); |
04afa70c TT |
4429 | } |
4430 | ||
c906108c SS |
4431 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4432 | is part of the bpstat is copied as well. */ | |
4433 | ||
313f3b21 SM |
4434 | bpstat * |
4435 | bpstat_copy (bpstat *bs) | |
c906108c | 4436 | { |
313f3b21 SM |
4437 | bpstat *p = nullptr; |
4438 | bpstat *tmp; | |
4439 | bpstat *retval = nullptr; | |
c906108c SS |
4440 | |
4441 | if (bs == NULL) | |
4442 | return bs; | |
4443 | ||
4444 | for (; bs != NULL; bs = bs->next) | |
4445 | { | |
313f3b21 | 4446 | tmp = new bpstat (*bs); |
31cc81e9 | 4447 | |
c906108c SS |
4448 | if (p == NULL) |
4449 | /* This is the first thing in the chain. */ | |
4450 | retval = tmp; | |
4451 | else | |
4452 | p->next = tmp; | |
4453 | p = tmp; | |
4454 | } | |
4455 | p->next = NULL; | |
4456 | return retval; | |
4457 | } | |
4458 | ||
4a64f543 | 4459 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4460 | |
313f3b21 SM |
4461 | bpstat * |
4462 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4463 | { |
c5aa993b JM |
4464 | if (bsp == NULL) |
4465 | return NULL; | |
c906108c | 4466 | |
c5aa993b JM |
4467 | for (; bsp != NULL; bsp = bsp->next) |
4468 | { | |
f431efe5 | 4469 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4470 | return bsp; |
4471 | } | |
c906108c SS |
4472 | return NULL; |
4473 | } | |
4474 | ||
ab04a2af TT |
4475 | /* See breakpoint.h. */ |
4476 | ||
4c462cb0 | 4477 | bool |
313f3b21 | 4478 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4479 | { |
ab04a2af TT |
4480 | for (; bsp != NULL; bsp = bsp->next) |
4481 | { | |
427cd150 TT |
4482 | if (bsp->breakpoint_at == NULL) |
4483 | { | |
4484 | /* A moribund location can never explain a signal other than | |
4485 | GDB_SIGNAL_TRAP. */ | |
4486 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4487 | return true; |
427cd150 TT |
4488 | } |
4489 | else | |
47591c29 | 4490 | { |
c47614fe | 4491 | if (bsp->breakpoint_at->explains_signal (sig)) |
4c462cb0 | 4492 | return true; |
47591c29 | 4493 | } |
ab04a2af TT |
4494 | } |
4495 | ||
4c462cb0 | 4496 | return false; |
ab04a2af TT |
4497 | } |
4498 | ||
78805ff8 | 4499 | /* See breakpoint.h. */ |
c906108c SS |
4500 | |
4501 | int | |
313f3b21 | 4502 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4503 | { |
4504 | struct breakpoint *b; | |
4505 | ||
4506 | if ((*bsp) == NULL) | |
4507 | return 0; /* No more breakpoint values */ | |
8671a17b | 4508 | |
4a64f543 MS |
4509 | /* We assume we'll never have several bpstats that correspond to a |
4510 | single breakpoint -- otherwise, this function might return the | |
4511 | same number more than once and this will look ugly. */ | |
f431efe5 | 4512 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4513 | *bsp = (*bsp)->next; |
4514 | if (b == NULL) | |
4515 | return -1; /* breakpoint that's been deleted since */ | |
4516 | ||
4517 | *num = b->number; /* We have its number */ | |
4518 | return 1; | |
c906108c SS |
4519 | } |
4520 | ||
78805ff8 PW |
4521 | /* See breakpoint.h */ |
4522 | ||
4523 | int | |
4524 | bpstat_locno (const bpstat *bs) | |
4525 | { | |
4526 | const struct breakpoint *b = bs->breakpoint_at; | |
4527 | const struct bp_location *bl = bs->bp_location_at.get (); | |
4528 | ||
4529 | int locno = 0; | |
4530 | ||
28a072f4 | 4531 | if (b != nullptr && b->loc != nullptr && b->loc->next != nullptr) |
78805ff8 PW |
4532 | { |
4533 | const bp_location *bl_i; | |
4534 | ||
4535 | for (bl_i = b->loc; | |
4536 | bl_i != bl && bl_i->next != nullptr; | |
4537 | bl_i = bl_i->next) | |
4538 | locno++; | |
4539 | ||
4540 | if (bl_i == bl) | |
4541 | locno++; | |
4542 | else | |
4543 | { | |
4544 | warning (_("location number not found for breakpoint %d address %s."), | |
4545 | b->number, paddress (bl->gdbarch, bl->address)); | |
4546 | locno = 0; | |
4547 | } | |
4548 | } | |
4549 | ||
4550 | return locno; | |
4551 | } | |
4552 | ||
4553 | /* See breakpoint.h. */ | |
4554 | ||
4555 | void | |
4556 | print_num_locno (const bpstat *bs, struct ui_out *uiout) | |
4557 | { | |
4558 | struct breakpoint *b = bs->breakpoint_at; | |
4559 | ||
4560 | if (b == nullptr) | |
4561 | uiout->text (_("deleted breakpoint")); | |
4562 | else | |
4563 | { | |
4564 | uiout->field_signed ("bkptno", b->number); | |
4565 | ||
4566 | int locno = bpstat_locno (bs); | |
4567 | if (locno != 0) | |
4568 | uiout->message (".%pF", signed_field ("locno", locno)); | |
4569 | } | |
4570 | } | |
4571 | ||
e93ca019 | 4572 | /* See breakpoint.h. */ |
c906108c SS |
4573 | |
4574 | void | |
e93ca019 | 4575 | bpstat_clear_actions (void) |
c906108c | 4576 | { |
313f3b21 | 4577 | bpstat *bs; |
e93ca019 | 4578 | |
00431a78 | 4579 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4580 | return; |
4581 | ||
00431a78 | 4582 | thread_info *tp = inferior_thread (); |
e93ca019 | 4583 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4584 | { |
d1b0a7bf | 4585 | bs->commands = NULL; |
850645cf | 4586 | bs->old_val.reset (nullptr); |
c906108c SS |
4587 | } |
4588 | } | |
4589 | ||
f3b1572e PA |
4590 | /* Called when a command is about to proceed the inferior. */ |
4591 | ||
4592 | static void | |
4593 | breakpoint_about_to_proceed (void) | |
4594 | { | |
d7e15655 | 4595 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4596 | { |
4597 | struct thread_info *tp = inferior_thread (); | |
4598 | ||
4599 | /* Allow inferior function calls in breakpoint commands to not | |
4600 | interrupt the command list. When the call finishes | |
4601 | successfully, the inferior will be standing at the same | |
4602 | breakpoint as if nothing happened. */ | |
16c381f0 | 4603 | if (tp->control.in_infcall) |
f3b1572e PA |
4604 | return; |
4605 | } | |
4606 | ||
4607 | breakpoint_proceeded = 1; | |
4608 | } | |
4609 | ||
d8de7963 | 4610 | /* Return true iff CMD as the first line of a command sequence is `silent' |
abf85f46 JK |
4611 | or its equivalent. */ |
4612 | ||
d8de7963 | 4613 | static bool |
abf85f46 JK |
4614 | command_line_is_silent (struct command_line *cmd) |
4615 | { | |
4f45d445 | 4616 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4617 | } |
4618 | ||
83f35083 PW |
4619 | /* Sets the $_hit_bpnum and $_hit_locno to bpnum and locno. |
4620 | A locno 0 is changed to 1 to e.g. let the user do | |
4621 | (gdb) disable $_hit_bpnum.$_hit_locno | |
4622 | for a single location breakpoint. */ | |
4623 | ||
78805ff8 | 4624 | static void |
83f35083 | 4625 | set_hit_convenience_vars (int bpnum, int locno) |
78805ff8 | 4626 | { |
83f35083 PW |
4627 | set_internalvar_integer (lookup_internalvar ("_hit_bpnum"), bpnum); |
4628 | set_internalvar_integer (lookup_internalvar ("_hit_locno"), | |
4629 | (locno > 0 ? locno : 1)); | |
78805ff8 PW |
4630 | } |
4631 | ||
4a64f543 MS |
4632 | /* Execute all the commands associated with all the breakpoints at |
4633 | this location. Any of these commands could cause the process to | |
4634 | proceed beyond this point, etc. We look out for such changes by | |
4635 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4636 | |
347bddb7 PA |
4637 | Returns true if a breakpoint command resumed the inferior. In that |
4638 | case, it is the caller's responsibility to recall it again with the | |
4639 | bpstat of the current thread. */ | |
4640 | ||
d8de7963 | 4641 | static bool |
313f3b21 | 4642 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4643 | { |
313f3b21 | 4644 | bpstat *bs; |
d8de7963 | 4645 | bool again = false; |
c906108c SS |
4646 | |
4647 | /* Avoid endless recursion if a `source' command is contained | |
4648 | in bs->commands. */ | |
4649 | if (executing_breakpoint_commands) | |
d8de7963 | 4650 | return false; |
c906108c | 4651 | |
81b1e71c TT |
4652 | scoped_restore save_executing |
4653 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4654 | |
1ac32117 | 4655 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4656 | |
4a64f543 | 4657 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4658 | bs = *bsp; |
4659 | ||
78805ff8 | 4660 | /* The $_hit_* convenience variables are set before running the |
83f35083 PW |
4661 | commands of BS. In case we have several bs, after the loop, |
4662 | we set again the variables to the first printed bpnum and locno. | |
4663 | For multiple breakpoints, this ensures the variables are set to the | |
4664 | breakpoint printed for the user. */ | |
4665 | int printed_hit_bpnum = -1; | |
4666 | int printed_hit_locno = -1; | |
78805ff8 | 4667 | |
c906108c SS |
4668 | breakpoint_proceeded = 0; |
4669 | for (; bs != NULL; bs = bs->next) | |
4670 | { | |
d1b0a7bf | 4671 | struct command_line *cmd = NULL; |
6c50ab1c | 4672 | |
83f35083 PW |
4673 | /* Set the _hit_* convenience variables before running BS's commands. */ |
4674 | { | |
4675 | const struct breakpoint *b = bs->breakpoint_at; | |
4676 | if (b != nullptr) | |
4677 | { | |
4678 | int locno = bpstat_locno (bs); | |
4679 | ||
4680 | set_hit_convenience_vars (b->number, locno); | |
4681 | if (printed_hit_locno == -1 && bs->print) | |
4682 | { | |
4683 | printed_hit_bpnum = b->number; | |
4684 | printed_hit_locno = locno; | |
4685 | } | |
4686 | } | |
4687 | } | |
78805ff8 | 4688 | |
6c50ab1c JB |
4689 | /* Take ownership of the BSP's command tree, if it has one. |
4690 | ||
dda83cd7 SM |
4691 | The command tree could legitimately contain commands like |
4692 | 'step' and 'next', which call clear_proceed_status, which | |
83f35083 | 4693 | frees the bpstat BS and its command tree. To make sure this doesn't |
dda83cd7 SM |
4694 | free the tree we're executing out from under us, we need to |
4695 | take ownership of the tree ourselves. Since a given bpstat's | |
4696 | commands are only executed once, we don't need to copy it; we | |
4697 | can clear the pointer in the bpstat, and make sure we free | |
4698 | the tree when we're done. */ | |
d1b0a7bf | 4699 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4700 | bs->commands = NULL; |
d1b0a7bf TT |
4701 | if (ccmd != NULL) |
4702 | cmd = ccmd.get (); | |
abf85f46 JK |
4703 | if (command_line_is_silent (cmd)) |
4704 | { | |
4705 | /* The action has been already done by bpstat_stop_status. */ | |
4706 | cmd = cmd->next; | |
4707 | } | |
6c50ab1c | 4708 | |
c906108c SS |
4709 | while (cmd != NULL) |
4710 | { | |
4711 | execute_control_command (cmd); | |
83f35083 PW |
4712 | /* After execute_control_command, if breakpoint_proceeded is true, |
4713 | BS has been freed and cannot be accessed anymore. */ | |
c906108c SS |
4714 | |
4715 | if (breakpoint_proceeded) | |
4716 | break; | |
4717 | else | |
4718 | cmd = cmd->next; | |
4719 | } | |
6c50ab1c | 4720 | |
c906108c | 4721 | if (breakpoint_proceeded) |
32c1e744 | 4722 | { |
cb814510 | 4723 | if (current_ui->async) |
347bddb7 PA |
4724 | /* If we are in async mode, then the target might be still |
4725 | running, not stopped at any breakpoint, so nothing for | |
4726 | us to do here -- just return to the event loop. */ | |
4727 | ; | |
32c1e744 VP |
4728 | else |
4729 | /* In sync mode, when execute_control_command returns | |
4730 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4731 | Breakpoint commands for that stop were not run, since |
4732 | execute_command does not run breakpoint commands -- | |
4733 | only command_line_handler does, but that one is not | |
4734 | involved in execution of breakpoint commands. So, we | |
4735 | can now execute breakpoint commands. It should be | |
4736 | noted that making execute_command do bpstat actions is | |
4737 | not an option -- in this case we'll have recursive | |
4738 | invocation of bpstat for each breakpoint with a | |
4739 | command, and can easily blow up GDB stack. Instead, we | |
4740 | return true, which will trigger the caller to recall us | |
4741 | with the new stop_bpstat. */ | |
d8de7963 | 4742 | again = true; |
347bddb7 | 4743 | break; |
32c1e744 | 4744 | } |
c906108c | 4745 | } |
78805ff8 PW |
4746 | |
4747 | /* Now that we have executed the commands of all bs, set the _hit_* | |
83f35083 PW |
4748 | convenience variables to the printed values. */ |
4749 | if (printed_hit_locno != -1) | |
4750 | set_hit_convenience_vars (printed_hit_bpnum, printed_hit_locno); | |
78805ff8 | 4751 | |
347bddb7 PA |
4752 | return again; |
4753 | } | |
4754 | ||
00431a78 PA |
4755 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4756 | one, is alive and has execution. Return NULL otherwise. */ | |
4757 | ||
4758 | static thread_info * | |
4759 | get_bpstat_thread () | |
4760 | { | |
55f6301a | 4761 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4762 | return NULL; |
4763 | ||
4764 | thread_info *tp = inferior_thread (); | |
611841bb | 4765 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4766 | return NULL; |
4767 | return tp; | |
4768 | } | |
4769 | ||
347bddb7 PA |
4770 | void |
4771 | bpstat_do_actions (void) | |
4772 | { | |
694c6bf5 | 4773 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4774 | thread_info *tp; |
353d1d73 | 4775 | |
347bddb7 | 4776 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4777 | while ((tp = get_bpstat_thread ()) != NULL) |
4778 | { | |
4779 | /* Since in sync mode, bpstat_do_actions may resume the | |
4780 | inferior, and only return when it is stopped at the next | |
4781 | breakpoint, we keep doing breakpoint actions until it returns | |
4782 | false to indicate the inferior was not resumed. */ | |
4783 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4784 | break; | |
4785 | } | |
353d1d73 | 4786 | |
694c6bf5 | 4787 | cleanup_if_error.release (); |
c906108c SS |
4788 | } |
4789 | ||
fa4727a6 DJ |
4790 | /* Print out the (old or new) value associated with a watchpoint. */ |
4791 | ||
4792 | static void | |
4793 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4794 | { | |
4795 | if (val == NULL) | |
7f6aba03 | 4796 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4797 | else |
79a45b7d TT |
4798 | { |
4799 | struct value_print_options opts; | |
4800 | get_user_print_options (&opts); | |
4801 | value_print (val, stream, &opts); | |
4802 | } | |
fa4727a6 DJ |
4803 | } |
4804 | ||
f303dbd6 PA |
4805 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4806 | debugging multiple threads. */ | |
4807 | ||
4808 | void | |
4809 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4810 | { | |
112e8700 | 4811 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4812 | return; |
4813 | ||
112e8700 | 4814 | uiout->text ("\n"); |
f303dbd6 PA |
4815 | |
4816 | if (show_thread_that_caused_stop ()) | |
4817 | { | |
f303dbd6 PA |
4818 | struct thread_info *thr = inferior_thread (); |
4819 | ||
112e8700 | 4820 | uiout->text ("Thread "); |
33eca680 | 4821 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4822 | |
25558938 | 4823 | const char *name = thread_name (thr); |
f303dbd6 PA |
4824 | if (name != NULL) |
4825 | { | |
112e8700 | 4826 | uiout->text (" \""); |
33eca680 | 4827 | uiout->field_string ("name", name); |
112e8700 | 4828 | uiout->text ("\""); |
f303dbd6 PA |
4829 | } |
4830 | ||
112e8700 | 4831 | uiout->text (" hit "); |
f303dbd6 PA |
4832 | } |
4833 | } | |
4834 | ||
e514a9d6 | 4835 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4836 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4837 | 'print_it' in the bpstat structure. Under some circumstances we |
4838 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4839 | normal_stop(). */ |
e514a9d6 JM |
4840 | |
4841 | static enum print_stop_action | |
313f3b21 | 4842 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4843 | { |
4844 | switch (bs->print_it) | |
4845 | { | |
4846 | case print_it_noop: | |
4a64f543 | 4847 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4848 | return PRINT_UNKNOWN; |
4849 | break; | |
4850 | ||
4851 | case print_it_done: | |
4852 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4853 | relevant messages. */ |
e514a9d6 JM |
4854 | return PRINT_SRC_AND_LOC; |
4855 | break; | |
4856 | ||
4857 | case print_it_normal: | |
4f8d1dc6 | 4858 | { |
f431efe5 PA |
4859 | struct breakpoint *b = bs->breakpoint_at; |
4860 | ||
1a6a67de TJB |
4861 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4862 | which has since been deleted. */ | |
4863 | if (b == NULL) | |
4864 | return PRINT_UNKNOWN; | |
4865 | ||
348d480f | 4866 | /* Normal case. Call the breakpoint's print_it method. */ |
c47614fe | 4867 | return b->print_it (bs); |
4f8d1dc6 | 4868 | } |
348d480f | 4869 | break; |
3086aeae | 4870 | |
e514a9d6 | 4871 | default: |
f34652de | 4872 | internal_error (_("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4873 | break; |
c906108c | 4874 | } |
c906108c SS |
4875 | } |
4876 | ||
2f9ee862 | 4877 | /* See breakpoint.h. */ |
edcc5120 | 4878 | |
2f9ee862 | 4879 | void |
4e9e993a | 4880 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4881 | { |
6fb16ce6 | 4882 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4883 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4884 | |
4885 | if (!is_catchpoint) | |
4886 | { | |
4887 | if (any_added || any_deleted) | |
112e8700 | 4888 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4889 | else |
112e8700 SM |
4890 | current_uiout->text (_("Stopped due to shared library event (no " |
4891 | "libraries added or removed)\n")); | |
edcc5120 TT |
4892 | } |
4893 | ||
112e8700 SM |
4894 | if (current_uiout->is_mi_like_p ()) |
4895 | current_uiout->field_string ("reason", | |
4896 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4897 | |
4898 | if (any_deleted) | |
4899 | { | |
112e8700 | 4900 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4901 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4902 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4903 | { |
6fb16ce6 SM |
4904 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4905 | ||
edcc5120 | 4906 | if (ix > 0) |
112e8700 SM |
4907 | current_uiout->text (" "); |
4908 | current_uiout->field_string ("library", name); | |
4909 | current_uiout->text ("\n"); | |
edcc5120 | 4910 | } |
edcc5120 TT |
4911 | } |
4912 | ||
4913 | if (any_added) | |
4914 | { | |
112e8700 | 4915 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4916 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4917 | bool first = true; |
52941706 | 4918 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4919 | { |
bcb430e4 | 4920 | if (!first) |
112e8700 | 4921 | current_uiout->text (" "); |
bcb430e4 | 4922 | first = false; |
112e8700 SM |
4923 | current_uiout->field_string ("library", iter->so_name); |
4924 | current_uiout->text ("\n"); | |
edcc5120 | 4925 | } |
edcc5120 TT |
4926 | } |
4927 | } | |
4928 | ||
e514a9d6 JM |
4929 | /* Print a message indicating what happened. This is called from |
4930 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4931 | list - a list of the eventpoints that caused this stop. KIND is |
4932 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4933 | routine calls the generic print routine for printing a message |
4934 | about reasons for stopping. This will print (for example) the | |
4935 | "Breakpoint n," part of the output. The return value of this | |
4936 | routine is one of: | |
c906108c | 4937 | |
4a64f543 | 4938 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4939 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4940 | code to print the location. An example is |
c5aa993b JM |
4941 | "Breakpoint 1, " which should be followed by |
4942 | the location. | |
917317f4 | 4943 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4944 | to also print the location part of the message. |
4945 | An example is the catch/throw messages, which | |
4a64f543 | 4946 | don't require a location appended to the end. |
917317f4 | 4947 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4948 | further info to be printed. */ |
c906108c | 4949 | |
917317f4 | 4950 | enum print_stop_action |
403c71fd | 4951 | bpstat_print (bpstat *bs, target_waitkind kind) |
c906108c | 4952 | { |
f486487f | 4953 | enum print_stop_action val; |
c5aa993b | 4954 | |
c906108c | 4955 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4956 | (Currently all watchpoints go on the bpstat whether hit or not. |
4957 | That probably could (should) be changed, provided care is taken | |
c906108c | 4958 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4959 | for (; bs; bs = bs->next) |
4960 | { | |
4961 | val = print_bp_stop_message (bs); | |
4962 | if (val == PRINT_SRC_ONLY | |
78805ff8 | 4963 | || val == PRINT_SRC_AND_LOC |
e514a9d6 JM |
4964 | || val == PRINT_NOTHING) |
4965 | return val; | |
4966 | } | |
c906108c | 4967 | |
36dfb11c TT |
4968 | /* If we had hit a shared library event breakpoint, |
4969 | print_bp_stop_message would print out this message. If we hit an | |
4970 | OS-level shared library event, do the same thing. */ | |
4971 | if (kind == TARGET_WAITKIND_LOADED) | |
4972 | { | |
4e9e993a | 4973 | print_solib_event (false); |
36dfb11c TT |
4974 | return PRINT_NOTHING; |
4975 | } | |
4976 | ||
e514a9d6 | 4977 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4978 | with and nothing was printed. */ |
917317f4 | 4979 | return PRINT_UNKNOWN; |
c906108c SS |
4980 | } |
4981 | ||
bf469271 | 4982 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4983 | |
bf469271 PA |
4984 | static bool |
4985 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4986 | { |
65558ca5 | 4987 | scoped_value_mark mark; |
43048e46 | 4988 | return value_true (exp->evaluate ()); |
c906108c SS |
4989 | } |
4990 | ||
5760d0ab | 4991 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4992 | |
313f3b21 | 4993 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4994 | : next (NULL), |
b6433ede | 4995 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4996 | breakpoint_at (bl->owner), |
4997 | commands (NULL), | |
04afa70c TT |
4998 | print (0), |
4999 | stop (0), | |
5000 | print_it (print_it_normal) | |
c906108c | 5001 | { |
04afa70c TT |
5002 | **bs_link_pointer = this; |
5003 | *bs_link_pointer = &next; | |
5004 | } | |
5005 | ||
313f3b21 | 5006 | bpstat::bpstat () |
04afa70c | 5007 | : next (NULL), |
04afa70c TT |
5008 | breakpoint_at (NULL), |
5009 | commands (NULL), | |
04afa70c TT |
5010 | print (0), |
5011 | stop (0), | |
5012 | print_it (print_it_normal) | |
5013 | { | |
c906108c SS |
5014 | } |
5015 | \f | |
d983da9c DJ |
5016 | /* The target has stopped with waitstatus WS. Check if any hardware |
5017 | watchpoints have triggered, according to the target. */ | |
5018 | ||
5019 | int | |
c272a98c | 5020 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 5021 | { |
57810aa7 | 5022 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 5023 | CORE_ADDR addr; |
d983da9c DJ |
5024 | |
5025 | if (!stopped_by_watchpoint) | |
5026 | { | |
5027 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
5028 | as not triggered. */ | |
43892fdf | 5029 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5030 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5031 | { |
5032 | struct watchpoint *w = (struct watchpoint *) b; | |
5033 | ||
5034 | w->watchpoint_triggered = watch_triggered_no; | |
5035 | } | |
d983da9c DJ |
5036 | |
5037 | return 0; | |
5038 | } | |
5039 | ||
328d42d8 | 5040 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
5041 | { |
5042 | /* We were stopped by a watchpoint, but we don't know where. | |
5043 | Mark all watchpoints as unknown. */ | |
43892fdf | 5044 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5045 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5046 | { |
5047 | struct watchpoint *w = (struct watchpoint *) b; | |
5048 | ||
5049 | w->watchpoint_triggered = watch_triggered_unknown; | |
5050 | } | |
d983da9c | 5051 | |
3c4797ba | 5052 | return 1; |
d983da9c DJ |
5053 | } |
5054 | ||
5055 | /* The target could report the data address. Mark watchpoints | |
5056 | affected by this data address as triggered, and all others as not | |
5057 | triggered. */ | |
5058 | ||
43892fdf | 5059 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 5060 | if (is_hardware_watchpoint (b)) |
d983da9c | 5061 | { |
3a5c3e22 | 5062 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 5063 | |
3a5c3e22 | 5064 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 5065 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 5066 | { |
3a5c3e22 | 5067 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 5068 | { |
3a5c3e22 PA |
5069 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
5070 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
5071 | |
5072 | if (newaddr == start) | |
5073 | { | |
3a5c3e22 | 5074 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5075 | break; |
5076 | } | |
5077 | } | |
5078 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
5079 | else if (target_watchpoint_addr_within_range |
5080 | (current_inferior ()->top_target (), addr, loc->address, | |
5081 | loc->length)) | |
9c06b0b4 | 5082 | { |
3a5c3e22 | 5083 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5084 | break; |
5085 | } | |
5086 | } | |
d983da9c DJ |
5087 | } |
5088 | ||
5089 | return 1; | |
5090 | } | |
5091 | ||
bf469271 PA |
5092 | /* Possible return values for watchpoint_check. */ |
5093 | enum wp_check_result | |
5094 | { | |
5095 | /* The watchpoint has been deleted. */ | |
5096 | WP_DELETED = 1, | |
5097 | ||
5098 | /* The value has changed. */ | |
5099 | WP_VALUE_CHANGED = 2, | |
5100 | ||
5101 | /* The value has not changed. */ | |
5102 | WP_VALUE_NOT_CHANGED = 3, | |
5103 | ||
5104 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
5105 | WP_IGNORE = 4, | |
5106 | }; | |
c906108c SS |
5107 | |
5108 | #define BP_TEMPFLAG 1 | |
5109 | #define BP_HARDWAREFLAG 2 | |
5110 | ||
4a64f543 | 5111 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 5112 | changed. */ |
553e4c11 | 5113 | |
bf469271 | 5114 | static wp_check_result |
313f3b21 | 5115 | watchpoint_check (bpstat *bs) |
c906108c | 5116 | { |
3a5c3e22 | 5117 | struct watchpoint *b; |
bd2b40ac | 5118 | frame_info_ptr fr; |
d8de7963 | 5119 | bool within_current_scope; |
c906108c | 5120 | |
f431efe5 | 5121 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5122 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5123 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5124 | |
f6bc2008 PA |
5125 | /* If this is a local watchpoint, we only want to check if the |
5126 | watchpoint frame is in scope if the current thread is the thread | |
5127 | that was used to create the watchpoint. */ | |
5128 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5129 | return WP_IGNORE; |
f6bc2008 | 5130 | |
c906108c | 5131 | if (b->exp_valid_block == NULL) |
d8de7963 | 5132 | within_current_scope = true; |
c906108c SS |
5133 | else |
5134 | { | |
bd2b40ac | 5135 | frame_info_ptr frame = get_current_frame (); |
edb3359d DJ |
5136 | struct gdbarch *frame_arch = get_frame_arch (frame); |
5137 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5138 | ||
c9cf6e20 | 5139 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5140 | still in the function but the stack frame has already been |
5141 | invalidated. Since we can't rely on the values of local | |
5142 | variables after the stack has been destroyed, we are treating | |
5143 | the watchpoint in that state as `not changed' without further | |
5144 | checking. Don't mark watchpoints as changed if the current | |
5145 | frame is in an epilogue - even if they are in some other | |
5146 | frame, our view of the stack is likely to be wrong and | |
5147 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5148 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5149 | return WP_IGNORE; |
a0f49112 | 5150 | |
101dcfbe | 5151 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5152 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5153 | |
5154 | /* If we've gotten confused in the unwinder, we might have | |
5155 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5156 | if (within_current_scope) |
5157 | { | |
5158 | struct symbol *function; | |
5159 | ||
5160 | function = get_frame_function (fr); | |
5161 | if (function == NULL | |
0d191295 | 5162 | || !function->value_block ()->contains (b->exp_valid_block)) |
d8de7963 | 5163 | within_current_scope = false; |
edb3359d | 5164 | } |
69fbadd5 | 5165 | |
edb3359d | 5166 | if (within_current_scope) |
c906108c SS |
5167 | /* If we end up stopping, the current frame will get selected |
5168 | in normal_stop. So this call to select_frame won't affect | |
5169 | the user. */ | |
0f7d239c | 5170 | select_frame (fr); |
c906108c | 5171 | } |
c5aa993b | 5172 | |
c906108c SS |
5173 | if (within_current_scope) |
5174 | { | |
4a64f543 | 5175 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
5176 | time before we return to the command level and call |
5177 | free_all_values. We can't call free_all_values because we | |
5178 | might be in the middle of evaluating a function call. */ | |
c906108c | 5179 | |
9c06b0b4 | 5180 | struct value *mark; |
fa4727a6 DJ |
5181 | struct value *new_val; |
5182 | ||
c1fc2657 | 5183 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5184 | /* Since we don't know the exact trigger address (from |
5185 | stopped_data_address), just tell the user we've triggered | |
5186 | a mask watchpoint. */ | |
5187 | return WP_VALUE_CHANGED; | |
5188 | ||
5189 | mark = value_mark (); | |
1eaebe02 | 5190 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 5191 | NULL, NULL, false); |
218d2fc6 | 5192 | |
bb9d5f81 PP |
5193 | if (b->val_bitsize != 0) |
5194 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5195 | ||
4a64f543 MS |
5196 | /* We use value_equal_contents instead of value_equal because |
5197 | the latter coerces an array to a pointer, thus comparing just | |
5198 | the address of the array instead of its contents. This is | |
5199 | not what we want. */ | |
fa4727a6 | 5200 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
5201 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
5202 | new_val))) | |
c906108c | 5203 | { |
c906108c | 5204 | bs->old_val = b->val; |
850645cf | 5205 | b->val = release_value (new_val); |
4c1d86d9 | 5206 | b->val_valid = true; |
850645cf TT |
5207 | if (new_val != NULL) |
5208 | value_free_to_mark (mark); | |
c906108c SS |
5209 | return WP_VALUE_CHANGED; |
5210 | } | |
5211 | else | |
5212 | { | |
60e1c644 | 5213 | /* Nothing changed. */ |
c906108c | 5214 | value_free_to_mark (mark); |
c906108c SS |
5215 | return WP_VALUE_NOT_CHANGED; |
5216 | } | |
5217 | } | |
5218 | else | |
5219 | { | |
5220 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
5221 | if we temporarily ignored the watchpoint, then when |
5222 | we reenter the block in which it is valid it contains | |
5223 | garbage (in the case of a function, it may have two | |
5224 | garbage values, one before and one after the prologue). | |
5225 | So we can't even detect the first assignment to it and | |
5226 | watch after that (since the garbage may or may not equal | |
5227 | the first value assigned). */ | |
348d480f | 5228 | /* We print all the stop information in |
c47614fe TT |
5229 | breakpointprint_it, but in this case, by the time we |
5230 | call breakpoint->print_it this bp will be deleted | |
348d480f PA |
5231 | already. So we have no choice but print the information |
5232 | here. */ | |
468afe6c | 5233 | |
0e454242 | 5234 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5235 | { |
468afe6c PA |
5236 | struct ui_out *uiout = current_uiout; |
5237 | ||
112e8700 SM |
5238 | if (uiout->is_mi_like_p ()) |
5239 | uiout->field_string | |
5240 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5241 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5242 | "left the block in\n" | |
5243 | "which its expression is valid.\n", | |
5244 | signed_field ("wpnum", b->number)); | |
468afe6c | 5245 | } |
4ce44c66 | 5246 | |
cdac0397 | 5247 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5248 | b->commands = NULL; |
d0fb5eae | 5249 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5250 | |
5251 | return WP_DELETED; | |
5252 | } | |
5253 | } | |
5254 | ||
18a18393 | 5255 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5256 | breakpoint location BL. This function does not check if we should |
5257 | stop, only if BL explains the stop. */ | |
5258 | ||
d8de7963 | 5259 | static bool |
6c95b8df | 5260 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5261 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5262 | const target_waitstatus &ws) |
18a18393 VP |
5263 | { |
5264 | struct breakpoint *b = bl->owner; | |
5265 | ||
348d480f | 5266 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5267 | gdb_assert (b != NULL); |
5268 | ||
c47614fe | 5269 | return b->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5270 | } |
5271 | ||
3a5c3e22 | 5272 | /* Determine if the watched values have actually changed, and we |
4ec2227a | 5273 | should stop. If not, set BS->stop to false. */ |
3a5c3e22 | 5274 | |
18a18393 | 5275 | static void |
313f3b21 | 5276 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5277 | { |
2bdf28a0 | 5278 | const struct bp_location *bl; |
3a5c3e22 | 5279 | struct watchpoint *b; |
2bdf28a0 JK |
5280 | |
5281 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5282 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5283 | gdb_assert (bl != NULL); |
3a5c3e22 | 5284 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5285 | gdb_assert (b != NULL); |
18a18393 | 5286 | |
18a18393 | 5287 | { |
d8de7963 AB |
5288 | bool must_check_value = false; |
5289 | ||
c1fc2657 | 5290 | if (b->type == bp_watchpoint) |
18a18393 VP |
5291 | /* For a software watchpoint, we must always check the |
5292 | watched value. */ | |
d8de7963 | 5293 | must_check_value = true; |
18a18393 VP |
5294 | else if (b->watchpoint_triggered == watch_triggered_yes) |
5295 | /* We have a hardware watchpoint (read, write, or access) | |
5296 | and the target earlier reported an address watched by | |
5297 | this watchpoint. */ | |
d8de7963 | 5298 | must_check_value = true; |
18a18393 | 5299 | else if (b->watchpoint_triggered == watch_triggered_unknown |
c1fc2657 | 5300 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5301 | /* We were stopped by a hardware watchpoint, but the target could |
5302 | not report the data address. We must check the watchpoint's | |
5303 | value. Access and read watchpoints are out of luck; without | |
5304 | a data address, we can't figure it out. */ | |
d8de7963 | 5305 | must_check_value = true; |
3a5c3e22 | 5306 | |
18a18393 VP |
5307 | if (must_check_value) |
5308 | { | |
bf469271 PA |
5309 | wp_check_result e; |
5310 | ||
a70b8144 | 5311 | try |
bf469271 PA |
5312 | { |
5313 | e = watchpoint_check (bs); | |
5314 | } | |
b1ffd112 | 5315 | catch (const gdb_exception_error &ex) |
bf469271 PA |
5316 | { |
5317 | exception_fprintf (gdb_stderr, ex, | |
5318 | "Error evaluating expression " | |
5319 | "for watchpoint %d\n", | |
5320 | b->number); | |
5321 | ||
5322 | SWITCH_THRU_ALL_UIS () | |
5323 | { | |
6cb06a8c TT |
5324 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5325 | b->number); | |
bf469271 PA |
5326 | } |
5327 | watchpoint_del_at_next_stop (b); | |
5328 | e = WP_DELETED; | |
5329 | } | |
bf469271 | 5330 | |
18a18393 VP |
5331 | switch (e) |
5332 | { | |
5333 | case WP_DELETED: | |
5334 | /* We've already printed what needs to be printed. */ | |
5335 | bs->print_it = print_it_done; | |
5336 | /* Stop. */ | |
5337 | break; | |
60e1c644 PA |
5338 | case WP_IGNORE: |
5339 | bs->print_it = print_it_noop; | |
4ec2227a | 5340 | bs->stop = false; |
60e1c644 | 5341 | break; |
18a18393 | 5342 | case WP_VALUE_CHANGED: |
c1fc2657 | 5343 | if (b->type == bp_read_watchpoint) |
18a18393 | 5344 | { |
85d721b8 PA |
5345 | /* There are two cases to consider here: |
5346 | ||
4a64f543 | 5347 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5348 | In that case, trust the target, and always report |
5349 | the watchpoint hit to the user. Even though | |
5350 | reads don't cause value changes, the value may | |
5351 | have changed since the last time it was read, and | |
5352 | since we're not trapping writes, we will not see | |
5353 | those, and as such we should ignore our notion of | |
5354 | old value. | |
5355 | ||
4a64f543 | 5356 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5357 | reads and writes. There are two ways this may |
5358 | happen: | |
5359 | ||
4a64f543 | 5360 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5361 | reads only, but can break on accesses (reads or |
5362 | writes), such as e.g., x86. We detect this case | |
5363 | at the time we try to insert read watchpoints. | |
5364 | ||
4a64f543 | 5365 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5366 | watchpoints, but, the user set an access or write |
5367 | watchpoint watching the same memory as this read | |
5368 | watchpoint. | |
5369 | ||
5370 | If we're watching memory writes as well as reads, | |
5371 | ignore watchpoint hits when we find that the | |
5372 | value hasn't changed, as reads don't cause | |
5373 | changes. This still gives false positives when | |
5374 | the program writes the same value to memory as | |
5375 | what there was already in memory (we will confuse | |
5376 | it for a read), but it's much better than | |
5377 | nothing. */ | |
5378 | ||
5379 | int other_write_watchpoint = 0; | |
5380 | ||
5381 | if (bl->watchpoint_type == hw_read) | |
5382 | { | |
43892fdf | 5383 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5384 | if (other_b->type == bp_hardware_watchpoint |
5385 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5386 | { |
3a5c3e22 PA |
5387 | struct watchpoint *other_w = |
5388 | (struct watchpoint *) other_b; | |
5389 | ||
5390 | if (other_w->watchpoint_triggered | |
5391 | == watch_triggered_yes) | |
5392 | { | |
5393 | other_write_watchpoint = 1; | |
5394 | break; | |
5395 | } | |
85d721b8 PA |
5396 | } |
5397 | } | |
5398 | ||
5399 | if (other_write_watchpoint | |
5400 | || bl->watchpoint_type == hw_access) | |
5401 | { | |
5402 | /* We're watching the same memory for writes, | |
5403 | and the value changed since the last time we | |
5404 | updated it, so this trap must be for a write. | |
5405 | Ignore it. */ | |
5406 | bs->print_it = print_it_noop; | |
4ec2227a | 5407 | bs->stop = false; |
85d721b8 | 5408 | } |
18a18393 VP |
5409 | } |
5410 | break; | |
5411 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5412 | if (b->type == bp_hardware_watchpoint |
5413 | || b->type == bp_watchpoint) | |
18a18393 VP |
5414 | { |
5415 | /* Don't stop: write watchpoints shouldn't fire if | |
5416 | the value hasn't changed. */ | |
5417 | bs->print_it = print_it_noop; | |
4ec2227a | 5418 | bs->stop = false; |
18a18393 VP |
5419 | } |
5420 | /* Stop. */ | |
5421 | break; | |
5422 | default: | |
5423 | /* Can't happen. */ | |
18a18393 VP |
5424 | break; |
5425 | } | |
5426 | } | |
d8de7963 | 5427 | else /* !must_check_value */ |
18a18393 VP |
5428 | { |
5429 | /* This is a case where some watchpoint(s) triggered, but | |
5430 | not at the address of this watchpoint, or else no | |
5431 | watchpoint triggered after all. So don't print | |
5432 | anything for this watchpoint. */ | |
5433 | bs->print_it = print_it_noop; | |
4ec2227a | 5434 | bs->stop = false; |
18a18393 VP |
5435 | } |
5436 | } | |
5437 | } | |
5438 | ||
7d4df6a4 DE |
5439 | /* For breakpoints that are currently marked as telling gdb to stop, |
5440 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5441 | of breakpoint referred to by BS. If we should not stop for this |
5442 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5443 | |
18a18393 | 5444 | static void |
313f3b21 | 5445 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5446 | { |
d8a77e4c AB |
5447 | INFRUN_SCOPED_DEBUG_ENTER_EXIT; |
5448 | ||
2bdf28a0 JK |
5449 | const struct bp_location *bl; |
5450 | struct breakpoint *b; | |
bf469271 PA |
5451 | /* Assume stop. */ |
5452 | bool condition_result = true; | |
7d4df6a4 DE |
5453 | struct expression *cond; |
5454 | ||
5455 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5456 | |
5457 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5458 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5459 | gdb_assert (bl != NULL); |
f431efe5 | 5460 | b = bs->breakpoint_at; |
2bdf28a0 | 5461 | gdb_assert (b != NULL); |
18a18393 | 5462 | |
d8a77e4c AB |
5463 | infrun_debug_printf ("thread = %s, breakpoint %d.%d", |
5464 | thread->ptid.to_string ().c_str (), | |
5465 | b->number, find_loc_num_by_location (bl)); | |
5466 | ||
b775012e LM |
5467 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5468 | need to do so again since GDB does not know if we stopped due to a | |
5469 | breakpoint or a single step breakpoint. */ | |
5470 | ||
18a18393 | 5471 | if (frame_id_p (b->frame_id) |
a0cbd650 | 5472 | && b->frame_id != get_stack_frame_id (get_current_frame ())) |
18a18393 | 5473 | { |
d8a77e4c AB |
5474 | infrun_debug_printf ("incorrect frame %s not %s, not stopping", |
5475 | get_stack_frame_id (get_current_frame ()).to_string ().c_str (), | |
5476 | b->frame_id.to_string ().c_str ()); | |
4ec2227a | 5477 | bs->stop = false; |
7d4df6a4 DE |
5478 | return; |
5479 | } | |
60e1c644 | 5480 | |
12ab52e9 PA |
5481 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5482 | evaluating the condition if this isn't the specified | |
5483 | thread/task. */ | |
00431a78 | 5484 | if ((b->thread != -1 && b->thread != thread->global_num) |
2ecee236 | 5485 | || (b->task != -1 && b->task != ada_get_task_number (thread))) |
6c1b0f7b | 5486 | { |
d8a77e4c | 5487 | infrun_debug_printf ("incorrect thread or task, not stopping"); |
4ec2227a | 5488 | bs->stop = false; |
6c1b0f7b DE |
5489 | return; |
5490 | } | |
5491 | ||
6dddc817 DE |
5492 | /* Evaluate extension language breakpoints that have a "stop" method |
5493 | implemented. */ | |
5494 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5495 | |
7d4df6a4 DE |
5496 | if (is_watchpoint (b)) |
5497 | { | |
5498 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5499 | |
4d01a485 | 5500 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5501 | } |
5502 | else | |
4d01a485 | 5503 | cond = bl->cond.get (); |
60e1c644 | 5504 | |
80e0c6dc | 5505 | if (cond != nullptr && b->disposition != disp_del_at_next_stop) |
7d4df6a4 | 5506 | { |
d8de7963 | 5507 | bool within_current_scope = true; |
7d4df6a4 | 5508 | struct watchpoint * w; |
60e1c644 | 5509 | |
65558ca5 TT |
5510 | /* We use scoped_value_mark because it could be a long time |
5511 | before we return to the command level and call | |
5512 | free_all_values. We can't call free_all_values because we | |
5513 | might be in the middle of evaluating a function call. */ | |
5514 | scoped_value_mark mark; | |
7d4df6a4 DE |
5515 | |
5516 | if (is_watchpoint (b)) | |
5517 | w = (struct watchpoint *) b; | |
5518 | else | |
5519 | w = NULL; | |
5520 | ||
5521 | /* Need to select the frame, with all that implies so that | |
5522 | the conditions will have the right context. Because we | |
5523 | use the frame, we will not see an inlined function's | |
5524 | variables when we arrive at a breakpoint at the start | |
5525 | of the inlined function; the current frame will be the | |
5526 | call site. */ | |
5527 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5528 | select_frame (get_current_frame ()); | |
5529 | else | |
18a18393 | 5530 | { |
bd2b40ac | 5531 | frame_info_ptr frame; |
7d4df6a4 DE |
5532 | |
5533 | /* For local watchpoint expressions, which particular | |
5534 | instance of a local is being watched matters, so we | |
5535 | keep track of the frame to evaluate the expression | |
5536 | in. To evaluate the condition however, it doesn't | |
5537 | really matter which instantiation of the function | |
5538 | where the condition makes sense triggers the | |
5539 | watchpoint. This allows an expression like "watch | |
5540 | global if q > 10" set in `func', catch writes to | |
5541 | global on all threads that call `func', or catch | |
5542 | writes on all recursive calls of `func' by a single | |
5543 | thread. We simply always evaluate the condition in | |
5544 | the innermost frame that's executing where it makes | |
5545 | sense to evaluate the condition. It seems | |
5546 | intuitive. */ | |
5547 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5548 | if (frame != NULL) | |
5549 | select_frame (frame); | |
5550 | else | |
d8de7963 | 5551 | within_current_scope = false; |
18a18393 | 5552 | } |
2e411b8c | 5553 | CORE_ADDR pc_before_check = get_frame_pc (get_selected_frame (nullptr)); |
7d4df6a4 | 5554 | if (within_current_scope) |
bf469271 | 5555 | { |
a70b8144 | 5556 | try |
bf469271 PA |
5557 | { |
5558 | condition_result = breakpoint_cond_eval (cond); | |
5559 | } | |
b1ffd112 | 5560 | catch (const gdb_exception_error &ex) |
bf469271 PA |
5561 | { |
5562 | exception_fprintf (gdb_stderr, ex, | |
2dc3457a AB |
5563 | "Error in testing condition for breakpoint %d:\n", |
5564 | b->number); | |
2e411b8c AB |
5565 | |
5566 | /* If the pc value changed as a result of evaluating the | |
5567 | condition then we probably stopped within an inferior | |
5568 | function call due to some unexpected stop, e.g. the thread | |
5569 | hit another breakpoint, or the thread received an | |
5570 | unexpected signal. In this case we don't want to also | |
5571 | print the information about this breakpoint. */ | |
5572 | CORE_ADDR pc_after_check | |
5573 | = get_frame_pc (get_selected_frame (nullptr)); | |
5574 | if (pc_before_check != pc_after_check) | |
5575 | bs->print = 0; | |
bf469271 | 5576 | } |
bf469271 | 5577 | } |
7d4df6a4 | 5578 | else |
18a18393 | 5579 | { |
7d4df6a4 DE |
5580 | warning (_("Watchpoint condition cannot be tested " |
5581 | "in the current scope")); | |
5582 | /* If we failed to set the right context for this | |
5583 | watchpoint, unconditionally report it. */ | |
18a18393 | 5584 | } |
7d4df6a4 | 5585 | /* FIXME-someday, should give breakpoint #. */ |
18a18393 | 5586 | } |
7d4df6a4 | 5587 | |
80e0c6dc | 5588 | if (cond != nullptr && !condition_result) |
7d4df6a4 | 5589 | { |
d8a77e4c | 5590 | infrun_debug_printf ("condition_result = false, not stopping"); |
4ec2227a | 5591 | bs->stop = false; |
d8a77e4c | 5592 | return; |
7d4df6a4 | 5593 | } |
7d4df6a4 DE |
5594 | else if (b->ignore_count > 0) |
5595 | { | |
d8a77e4c AB |
5596 | infrun_debug_printf ("ignore count %d, not stopping", |
5597 | b->ignore_count); | |
7d4df6a4 | 5598 | b->ignore_count--; |
4ec2227a | 5599 | bs->stop = false; |
7d4df6a4 DE |
5600 | /* Increase the hit count even though we don't stop. */ |
5601 | ++(b->hit_count); | |
76727919 | 5602 | gdb::observers::breakpoint_modified.notify (b); |
d8a77e4c AB |
5603 | return; |
5604 | } | |
5605 | ||
5606 | if (bs->stop) | |
5607 | infrun_debug_printf ("stopping at this breakpoint"); | |
5608 | else | |
5609 | infrun_debug_printf ("not stopping at this breakpoint"); | |
18a18393 VP |
5610 | } |
5611 | ||
1cf4d951 PA |
5612 | /* Returns true if we need to track moribund locations of LOC's type |
5613 | on the current target. */ | |
5614 | ||
d8de7963 | 5615 | static bool |
b2ff9ed3 | 5616 | need_moribund_for_location_type (const struct bp_location *loc) |
1cf4d951 PA |
5617 | { |
5618 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5619 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5620 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5621 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5622 | } | |
5623 | ||
ddfe970e | 5624 | /* See breakpoint.h. */ |
c906108c | 5625 | |
313f3b21 | 5626 | bpstat * |
ddfe970e | 5627 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5628 | const target_waitstatus &ws) |
c906108c | 5629 | { |
313f3b21 | 5630 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5631 | |
43892fdf | 5632 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5633 | { |
1a853c52 | 5634 | if (!breakpoint_enabled (b)) |
429374b8 | 5635 | continue; |
a5606eee | 5636 | |
40cb8ca5 | 5637 | for (bp_location *bl : b->locations ()) |
429374b8 | 5638 | { |
4a64f543 MS |
5639 | /* For hardware watchpoints, we look only at the first |
5640 | location. The watchpoint_check function will work on the | |
5641 | entire expression, not the individual locations. For | |
5642 | read watchpoints, the watchpoints_triggered function has | |
5643 | checked all locations already. */ | |
429374b8 JK |
5644 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5645 | break; | |
18a18393 | 5646 | |
b5fa468f | 5647 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5648 | continue; |
c5aa993b | 5649 | |
09ac7c10 | 5650 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5651 | continue; |
c5aa993b | 5652 | |
4a64f543 MS |
5653 | /* Come here if it's a watchpoint, or if the break address |
5654 | matches. */ | |
c5aa993b | 5655 | |
313f3b21 | 5656 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5657 | explain stop. */ |
c5aa993b | 5658 | |
f431efe5 PA |
5659 | /* Assume we stop. Should we find a watchpoint that is not |
5660 | actually triggered, or if the condition of the breakpoint | |
5661 | evaluates as false, we'll reset 'stop' to 0. */ | |
4ec2227a TT |
5662 | bs->stop = true; |
5663 | bs->print = true; | |
d983da9c | 5664 | |
f431efe5 PA |
5665 | /* If this is a scope breakpoint, mark the associated |
5666 | watchpoint as triggered so that we will handle the | |
5667 | out-of-scope event. We'll get to the watchpoint next | |
5668 | iteration. */ | |
d0fb5eae | 5669 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5670 | { |
5671 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5672 | ||
5673 | w->watchpoint_triggered = watch_triggered_yes; | |
5674 | } | |
f431efe5 PA |
5675 | } |
5676 | } | |
5677 | ||
7c16b83e | 5678 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5679 | if (!target_supports_stopped_by_sw_breakpoint () |
5680 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5681 | { |
1123588c | 5682 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5683 | { |
1cf4d951 PA |
5684 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5685 | && need_moribund_for_location_type (loc)) | |
5686 | { | |
313f3b21 | 5687 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 | 5688 | /* For hits of moribund locations, we should just proceed. */ |
4ec2227a TT |
5689 | bs->stop = false; |
5690 | bs->print = false; | |
1cf4d951 PA |
5691 | bs->print_it = print_it_noop; |
5692 | } | |
f431efe5 PA |
5693 | } |
5694 | } | |
5695 | ||
ddfe970e KS |
5696 | return bs_head; |
5697 | } | |
5698 | ||
5699 | /* See breakpoint.h. */ | |
5700 | ||
313f3b21 | 5701 | bpstat * |
ddfe970e | 5702 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5703 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5704 | const target_waitstatus &ws, |
313f3b21 | 5705 | bpstat *stop_chain) |
ddfe970e KS |
5706 | { |
5707 | struct breakpoint *b = NULL; | |
5708 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5709 | bpstat *bs_head = stop_chain; |
5710 | bpstat *bs; | |
ddfe970e KS |
5711 | int need_remove_insert; |
5712 | int removed_any; | |
5713 | ||
5714 | /* First, build the bpstat chain with locations that explain a | |
5715 | target stop, while being careful to not set the target running, | |
5716 | as that may invalidate locations (in particular watchpoint | |
5717 | locations are recreated). Resuming will happen here with | |
5718 | breakpoint conditions or watchpoint expressions that include | |
5719 | inferior function calls. */ | |
5720 | if (bs_head == NULL) | |
5721 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5722 | ||
edcc5120 TT |
5723 | /* A bit of special processing for shlib breakpoints. We need to |
5724 | process solib loading here, so that the lists of loaded and | |
5725 | unloaded libraries are correct before we handle "catch load" and | |
5726 | "catch unload". */ | |
5727 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5728 | { | |
5d268276 | 5729 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5730 | { |
5731 | handle_solib_event (); | |
5732 | break; | |
5733 | } | |
5734 | } | |
5735 | ||
f431efe5 PA |
5736 | /* Now go through the locations that caused the target to stop, and |
5737 | check whether we're interested in reporting this stop to higher | |
5738 | layers, or whether we should resume the target transparently. */ | |
5739 | ||
5740 | removed_any = 0; | |
5741 | ||
5760d0ab | 5742 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5743 | { |
5744 | if (!bs->stop) | |
5745 | continue; | |
5746 | ||
f431efe5 | 5747 | b = bs->breakpoint_at; |
c47614fe | 5748 | b->check_status (bs); |
348d480f | 5749 | if (bs->stop) |
28010a5d | 5750 | { |
00431a78 | 5751 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5752 | |
429374b8 JK |
5753 | if (bs->stop) |
5754 | { | |
5755 | ++(b->hit_count); | |
c906108c | 5756 | |
4a64f543 | 5757 | /* We will stop here. */ |
429374b8 JK |
5758 | if (b->disposition == disp_disable) |
5759 | { | |
816338b5 | 5760 | --(b->enable_count); |
1a853c52 | 5761 | if (b->enable_count <= 0) |
429374b8 | 5762 | b->enable_state = bp_disabled; |
f431efe5 | 5763 | removed_any = 1; |
429374b8 | 5764 | } |
bd7ccaa9 | 5765 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 | 5766 | if (b->silent) |
4ec2227a | 5767 | bs->print = false; |
429374b8 | 5768 | bs->commands = b->commands; |
abf85f46 | 5769 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5770 | ? bs->commands.get () : NULL)) |
4ec2227a | 5771 | bs->print = false; |
9d6e6e84 | 5772 | |
c47614fe | 5773 | b->after_condition_true (bs); |
429374b8 JK |
5774 | } |
5775 | ||
348d480f | 5776 | } |
a9b3a50f PA |
5777 | |
5778 | /* Print nothing for this entry if we don't stop or don't | |
5779 | print. */ | |
5780 | if (!bs->stop || !bs->print) | |
5781 | bs->print_it = print_it_noop; | |
429374b8 | 5782 | } |
876fa593 | 5783 | |
d983da9c DJ |
5784 | /* If we aren't stopping, the value of some hardware watchpoint may |
5785 | not have changed, but the intermediate memory locations we are | |
5786 | watching may have. Don't bother if we're stopping; this will get | |
5787 | done later. */ | |
d832cb68 | 5788 | need_remove_insert = 0; |
5760d0ab JK |
5789 | if (! bpstat_causes_stop (bs_head)) |
5790 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5791 | if (!bs->stop |
f431efe5 PA |
5792 | && bs->breakpoint_at |
5793 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5794 | { |
3a5c3e22 PA |
5795 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5796 | ||
d8de7963 | 5797 | update_watchpoint (w, false /* don't reparse. */); |
d832cb68 | 5798 | need_remove_insert = 1; |
d983da9c DJ |
5799 | } |
5800 | ||
d832cb68 | 5801 | if (need_remove_insert) |
44702360 | 5802 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5803 | else if (removed_any) |
44702360 | 5804 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5805 | |
5760d0ab | 5806 | return bs_head; |
c906108c | 5807 | } |
628fe4e4 | 5808 | |
d37e0847 PA |
5809 | /* See breakpoint.h. */ |
5810 | ||
5811 | bpstat * | |
5812 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5813 | thread_info *thread, const target_waitstatus &ws) | |
5814 | { | |
5815 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5816 | ||
5817 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5818 | previous stop to avoid confusing bpstat_stop_status. */ | |
5819 | watchpoints_triggered (ws); | |
5820 | ||
5821 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5822 | } | |
5823 | ||
628fe4e4 | 5824 | static void |
61c26be8 | 5825 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5826 | { |
628fe4e4 JK |
5827 | struct gdbarch *gdbarch; |
5828 | ||
1eb8556f | 5829 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5830 | |
628fe4e4 JK |
5831 | /* Switch terminal for any messages produced by |
5832 | breakpoint_re_set. */ | |
223ffa71 | 5833 | target_terminal::ours_for_output (); |
628fe4e4 | 5834 | |
61c26be8 MS |
5835 | gdbarch = get_frame_arch (get_current_frame ()); |
5836 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5837 | thus it is expected that its objectfile can be found through | |
5838 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5839 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5840 | function needs to be updated too. */ | |
5841 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5842 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
508ccf9b TV |
5843 | objfile *objfile = jit_bp_sym.objfile; |
5844 | if (objfile->separate_debug_objfile_backlink) | |
5845 | objfile = objfile->separate_debug_objfile_backlink; | |
5846 | jit_event_handler (gdbarch, objfile); | |
628fe4e4 | 5847 | |
223ffa71 | 5848 | target_terminal::inferior (); |
628fe4e4 JK |
5849 | } |
5850 | ||
5851 | /* Prepare WHAT final decision for infrun. */ | |
5852 | ||
5853 | /* Decide what infrun needs to do with this bpstat. */ | |
5854 | ||
c906108c | 5855 | struct bpstat_what |
313f3b21 | 5856 | bpstat_what (bpstat *bs_head) |
c906108c | 5857 | { |
c906108c | 5858 | struct bpstat_what retval; |
313f3b21 | 5859 | bpstat *bs; |
c906108c | 5860 | |
628fe4e4 | 5861 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5862 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5863 | retval.is_longjmp = false; |
628fe4e4 | 5864 | |
0e30163f | 5865 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5866 | { |
628fe4e4 JK |
5867 | /* Extract this BS's action. After processing each BS, we check |
5868 | if its action overrides all we've seem so far. */ | |
5869 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5870 | enum bptype bptype; | |
5871 | ||
c906108c | 5872 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5873 | { |
5874 | /* I suspect this can happen if it was a momentary | |
5875 | breakpoint which has since been deleted. */ | |
5876 | bptype = bp_none; | |
5877 | } | |
20874c92 | 5878 | else |
f431efe5 | 5879 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5880 | |
5881 | switch (bptype) | |
c906108c SS |
5882 | { |
5883 | case bp_none: | |
628fe4e4 | 5884 | break; |
c906108c SS |
5885 | case bp_breakpoint: |
5886 | case bp_hardware_breakpoint: | |
7c16b83e | 5887 | case bp_single_step: |
c906108c SS |
5888 | case bp_until: |
5889 | case bp_finish: | |
a9b3a50f | 5890 | case bp_shlib_event: |
c906108c SS |
5891 | if (bs->stop) |
5892 | { | |
5893 | if (bs->print) | |
628fe4e4 | 5894 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5895 | else |
628fe4e4 | 5896 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5897 | } |
5898 | else | |
628fe4e4 | 5899 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5900 | break; |
5901 | case bp_watchpoint: | |
5902 | case bp_hardware_watchpoint: | |
5903 | case bp_read_watchpoint: | |
5904 | case bp_access_watchpoint: | |
5905 | if (bs->stop) | |
5906 | { | |
5907 | if (bs->print) | |
628fe4e4 | 5908 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5909 | else |
628fe4e4 | 5910 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5911 | } |
5912 | else | |
628fe4e4 JK |
5913 | { |
5914 | /* There was a watchpoint, but we're not stopping. | |
5915 | This requires no further action. */ | |
5916 | } | |
c906108c SS |
5917 | break; |
5918 | case bp_longjmp: | |
e2e4d78b | 5919 | case bp_longjmp_call_dummy: |
186c406b | 5920 | case bp_exception: |
0a39bb32 PA |
5921 | if (bs->stop) |
5922 | { | |
5923 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5924 | retval.is_longjmp = bptype != bp_exception; | |
5925 | } | |
5926 | else | |
5927 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5928 | break; |
5929 | case bp_longjmp_resume: | |
186c406b | 5930 | case bp_exception_resume: |
0a39bb32 PA |
5931 | if (bs->stop) |
5932 | { | |
5933 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5934 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5935 | } | |
5936 | else | |
5937 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5938 | break; |
5939 | case bp_step_resume: | |
5940 | if (bs->stop) | |
628fe4e4 JK |
5941 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5942 | else | |
c906108c | 5943 | { |
628fe4e4 JK |
5944 | /* It is for the wrong frame. */ |
5945 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5946 | } |
c906108c | 5947 | break; |
2c03e5be PA |
5948 | case bp_hp_step_resume: |
5949 | if (bs->stop) | |
5950 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5951 | else | |
5952 | { | |
5953 | /* It is for the wrong frame. */ | |
5954 | this_action = BPSTAT_WHAT_SINGLE; | |
5955 | } | |
5956 | break; | |
c906108c | 5957 | case bp_watchpoint_scope: |
c4093a6a | 5958 | case bp_thread_event: |
1900040c | 5959 | case bp_overlay_event: |
0fd8e87f | 5960 | case bp_longjmp_master: |
aa7d318d | 5961 | case bp_std_terminate_master: |
186c406b | 5962 | case bp_exception_master: |
628fe4e4 | 5963 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5964 | break; |
ce78b96d | 5965 | case bp_catchpoint: |
c5aa993b JM |
5966 | if (bs->stop) |
5967 | { | |
5968 | if (bs->print) | |
628fe4e4 | 5969 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5970 | else |
628fe4e4 | 5971 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5972 | } |
5973 | else | |
628fe4e4 | 5974 | { |
cb1e4e32 PA |
5975 | /* Some catchpoints are implemented with breakpoints. |
5976 | For those, we need to step over the breakpoint. */ | |
6e14e441 PA |
5977 | if (bs->bp_location_at->loc_type == bp_loc_software_breakpoint |
5978 | || bs->bp_location_at->loc_type == bp_loc_hardware_breakpoint) | |
cb1e4e32 | 5979 | this_action = BPSTAT_WHAT_SINGLE; |
628fe4e4 JK |
5980 | } |
5981 | break; | |
628fe4e4 | 5982 | case bp_jit_event: |
628fe4e4 | 5983 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5984 | break; |
c906108c | 5985 | case bp_call_dummy: |
53a5351d JM |
5986 | /* Make sure the action is stop (silent or noisy), |
5987 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5988 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5989 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5990 | break; |
5991 | case bp_std_terminate: | |
5992 | /* Make sure the action is stop (silent or noisy), | |
5993 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5994 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5995 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5996 | break; |
1042e4c0 | 5997 | case bp_tracepoint: |
7a697b8d | 5998 | case bp_fast_tracepoint: |
0fb4aa4b | 5999 | case bp_static_tracepoint: |
7b572efb | 6000 | case bp_static_marker_tracepoint: |
1042e4c0 SS |
6001 | /* Tracepoint hits should not be reported back to GDB, and |
6002 | if one got through somehow, it should have been filtered | |
6003 | out already. */ | |
f34652de | 6004 | internal_error (_("bpstat_what: tracepoint encountered")); |
0e30163f JK |
6005 | break; |
6006 | case bp_gnu_ifunc_resolver: | |
6007 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
6008 | this_action = BPSTAT_WHAT_SINGLE; | |
6009 | break; | |
6010 | case bp_gnu_ifunc_resolver_return: | |
6011 | /* The breakpoint will be removed, execution will restart from the | |
6012 | PC of the former breakpoint. */ | |
6013 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
6014 | break; | |
e7e0cddf SS |
6015 | |
6016 | case bp_dprintf: | |
a11cfd87 HZ |
6017 | if (bs->stop) |
6018 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
6019 | else | |
6020 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
6021 | break; |
6022 | ||
628fe4e4 | 6023 | default: |
f34652de | 6024 | internal_error (_("bpstat_what: unhandled bptype %d"), (int) bptype); |
c906108c | 6025 | } |
628fe4e4 | 6026 | |
325fac50 | 6027 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 6028 | } |
628fe4e4 | 6029 | |
243a9253 PA |
6030 | return retval; |
6031 | } | |
628fe4e4 | 6032 | |
243a9253 | 6033 | void |
313f3b21 | 6034 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 6035 | { |
313f3b21 | 6036 | bpstat *bs; |
628fe4e4 | 6037 | |
0e30163f JK |
6038 | for (bs = bs_head; bs != NULL; bs = bs->next) |
6039 | { | |
6040 | struct breakpoint *b = bs->breakpoint_at; | |
6041 | ||
6042 | if (b == NULL) | |
6043 | continue; | |
6044 | switch (b->type) | |
6045 | { | |
243a9253 | 6046 | case bp_jit_event: |
61c26be8 | 6047 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 6048 | break; |
0e30163f | 6049 | case bp_gnu_ifunc_resolver: |
74421c0b | 6050 | gnu_ifunc_resolver_stop ((code_breakpoint *) b); |
0e30163f JK |
6051 | break; |
6052 | case bp_gnu_ifunc_resolver_return: | |
74421c0b | 6053 | gnu_ifunc_resolver_return_stop ((code_breakpoint *) b); |
0e30163f JK |
6054 | break; |
6055 | } | |
6056 | } | |
c906108c SS |
6057 | } |
6058 | ||
4c462cb0 | 6059 | /* See breakpoint.h. */ |
c906108c | 6060 | |
4c462cb0 SM |
6061 | bool |
6062 | bpstat_should_step () | |
c906108c | 6063 | { |
43892fdf | 6064 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 6065 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 6066 | return true; |
43892fdf | 6067 | |
4c462cb0 | 6068 | return false; |
c906108c SS |
6069 | } |
6070 | ||
4c462cb0 SM |
6071 | /* See breakpoint.h. */ |
6072 | ||
6073 | bool | |
313f3b21 | 6074 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
6075 | { |
6076 | for (; bs != NULL; bs = bs->next) | |
6077 | if (bs->stop) | |
4c462cb0 | 6078 | return true; |
67822962 | 6079 | |
4c462cb0 | 6080 | return false; |
67822962 PA |
6081 | } |
6082 | ||
c906108c | 6083 | \f |
c5aa993b | 6084 | |
6c92c339 | 6085 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
6086 | so it starts at the position corresponding to the table column |
6087 | named COL_NAME in the currently active table of UIOUT. */ | |
6088 | ||
6c92c339 | 6089 | static int |
170b53b2 UW |
6090 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
6091 | { | |
170b53b2 | 6092 | int i, total_width, width, align; |
c5209615 | 6093 | const char *text; |
170b53b2 UW |
6094 | |
6095 | total_width = 0; | |
112e8700 | 6096 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
6097 | { |
6098 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 6099 | return total_width; |
170b53b2 UW |
6100 | |
6101 | total_width += width + 1; | |
6102 | } | |
6103 | ||
6c92c339 | 6104 | return 0; |
170b53b2 UW |
6105 | } |
6106 | ||
b775012e LM |
6107 | /* Determine if the locations of this breakpoint will have their conditions |
6108 | evaluated by the target, host or a mix of both. Returns the following: | |
6109 | ||
6110 | "host": Host evals condition. | |
6111 | "host or target": Host or Target evals condition. | |
6112 | "target": Target evals condition. | |
6113 | */ | |
6114 | ||
6115 | static const char * | |
a67bcaba | 6116 | bp_condition_evaluator (const breakpoint *b) |
b775012e | 6117 | { |
b775012e LM |
6118 | char host_evals = 0; |
6119 | char target_evals = 0; | |
6120 | ||
6121 | if (!b) | |
6122 | return NULL; | |
6123 | ||
6124 | if (!is_breakpoint (b)) | |
6125 | return NULL; | |
6126 | ||
6127 | if (gdb_evaluates_breakpoint_condition_p () | |
6128 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6129 | return condition_evaluation_host; | |
6130 | ||
40cb8ca5 | 6131 | for (bp_location *bl : b->locations ()) |
b775012e LM |
6132 | { |
6133 | if (bl->cond_bytecode) | |
6134 | target_evals++; | |
6135 | else | |
6136 | host_evals++; | |
6137 | } | |
6138 | ||
6139 | if (host_evals && target_evals) | |
6140 | return condition_evaluation_both; | |
6141 | else if (target_evals) | |
6142 | return condition_evaluation_target; | |
6143 | else | |
6144 | return condition_evaluation_host; | |
6145 | } | |
6146 | ||
6147 | /* Determine the breakpoint location's condition evaluator. This is | |
6148 | similar to bp_condition_evaluator, but for locations. */ | |
6149 | ||
6150 | static const char * | |
b2ff9ed3 | 6151 | bp_location_condition_evaluator (const struct bp_location *bl) |
b775012e LM |
6152 | { |
6153 | if (bl && !is_breakpoint (bl->owner)) | |
6154 | return NULL; | |
6155 | ||
6156 | if (gdb_evaluates_breakpoint_condition_p () | |
6157 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6158 | return condition_evaluation_host; | |
6159 | ||
6160 | if (bl && bl->cond_bytecode) | |
6161 | return condition_evaluation_target; | |
6162 | else | |
6163 | return condition_evaluation_host; | |
6164 | } | |
6165 | ||
859825b8 JK |
6166 | /* Print the LOC location out of the list of B->LOC locations. */ |
6167 | ||
170b53b2 | 6168 | static void |
a67bcaba | 6169 | print_breakpoint_location (const breakpoint *b, |
170b53b2 | 6170 | struct bp_location *loc) |
0d381245 | 6171 | { |
79a45e25 | 6172 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
6173 | |
6174 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 6175 | |
859825b8 JK |
6176 | if (loc != NULL && loc->shlib_disabled) |
6177 | loc = NULL; | |
6178 | ||
6c95b8df PA |
6179 | if (loc != NULL) |
6180 | set_current_program_space (loc->pspace); | |
6181 | ||
56435ebe | 6182 | if (b->display_canonical) |
709438c7 | 6183 | uiout->field_string ("what", b->locspec->to_string ()); |
2f202fde | 6184 | else if (loc && loc->symtab) |
0d381245 | 6185 | { |
4a27f119 KS |
6186 | const struct symbol *sym = loc->symbol; |
6187 | ||
0d381245 VP |
6188 | if (sym) |
6189 | { | |
112e8700 | 6190 | uiout->text ("in "); |
987012b8 | 6191 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 6192 | function_name_style.style ()); |
112e8700 SM |
6193 | uiout->text (" "); |
6194 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6195 | uiout->text ("at "); | |
0d381245 | 6196 | } |
112e8700 | 6197 | uiout->field_string ("file", |
cbe56571 | 6198 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 6199 | file_name_style.style ()); |
112e8700 | 6200 | uiout->text (":"); |
05cba821 | 6201 | |
112e8700 SM |
6202 | if (uiout->is_mi_like_p ()) |
6203 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6204 | |
381befee | 6205 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 6206 | } |
859825b8 | 6207 | else if (loc) |
0d381245 | 6208 | { |
d7e74731 | 6209 | string_file stb; |
170b53b2 | 6210 | |
d7e74731 | 6211 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6212 | demangle, ""); |
112e8700 | 6213 | uiout->field_stream ("at", stb); |
0d381245 | 6214 | } |
859825b8 | 6215 | else |
f00aae0f | 6216 | { |
709438c7 | 6217 | uiout->field_string ("pending", b->locspec->to_string ()); |
f00aae0f KS |
6218 | /* If extra_string is available, it could be holding a condition |
6219 | or dprintf arguments. In either case, make sure it is printed, | |
6220 | too, but only for non-MI streams. */ | |
112e8700 | 6221 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6222 | { |
6223 | if (b->type == bp_dprintf) | |
112e8700 | 6224 | uiout->text (","); |
f00aae0f | 6225 | else |
112e8700 | 6226 | uiout->text (" "); |
6f781ee3 | 6227 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
6228 | } |
6229 | } | |
6c95b8df | 6230 | |
b775012e LM |
6231 | if (loc && is_breakpoint (b) |
6232 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6233 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6234 | { | |
112e8700 SM |
6235 | uiout->text (" ("); |
6236 | uiout->field_string ("evaluated-by", | |
b775012e | 6237 | bp_location_condition_evaluator (loc)); |
112e8700 | 6238 | uiout->text (")"); |
b775012e | 6239 | } |
0d381245 VP |
6240 | } |
6241 | ||
269b11a2 PA |
6242 | static const char * |
6243 | bptype_string (enum bptype type) | |
c906108c | 6244 | { |
c4093a6a JM |
6245 | struct ep_type_description |
6246 | { | |
6247 | enum bptype type; | |
a121b7c1 | 6248 | const char *description; |
c4093a6a JM |
6249 | }; |
6250 | static struct ep_type_description bptypes[] = | |
c906108c | 6251 | { |
c5aa993b JM |
6252 | {bp_none, "?deleted?"}, |
6253 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6254 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6255 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6256 | {bp_until, "until"}, |
6257 | {bp_finish, "finish"}, | |
6258 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6259 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6260 | {bp_read_watchpoint, "read watchpoint"}, |
6261 | {bp_access_watchpoint, "acc watchpoint"}, | |
6262 | {bp_longjmp, "longjmp"}, | |
6263 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6264 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6265 | {bp_exception, "exception"}, |
6266 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6267 | {bp_step_resume, "step resume"}, |
2c03e5be | 6268 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6269 | {bp_watchpoint_scope, "watchpoint scope"}, |
6270 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6271 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6272 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6273 | {bp_thread_event, "thread events"}, |
1900040c | 6274 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6275 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6276 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6277 | {bp_exception_master, "exception master"}, |
ce78b96d | 6278 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6279 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6280 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6281 | {bp_static_tracepoint, "static tracepoint"}, |
7b572efb | 6282 | {bp_static_marker_tracepoint, "static marker tracepoint"}, |
e7e0cddf | 6283 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6284 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6285 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6286 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6287 | }; |
269b11a2 PA |
6288 | |
6289 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6290 | || ((int) type != bptypes[(int) type].type)) | |
f34652de | 6291 | internal_error (_("bptypes table does not describe type #%d."), |
269b11a2 PA |
6292 | (int) type); |
6293 | ||
6294 | return bptypes[(int) type].description; | |
6295 | } | |
6296 | ||
998580f1 MK |
6297 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6298 | For CLI, prefix the list with the string 'inf'. */ | |
6299 | ||
6300 | static void | |
6301 | output_thread_groups (struct ui_out *uiout, | |
6302 | const char *field_name, | |
5c632425 | 6303 | const std::vector<int> &inf_nums, |
998580f1 MK |
6304 | int mi_only) |
6305 | { | |
112e8700 | 6306 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6307 | |
6308 | /* For backward compatibility, don't display inferiors in CLI unless | |
6309 | there are several. Always display them for MI. */ | |
6310 | if (!is_mi && mi_only) | |
6311 | return; | |
6312 | ||
10f489e5 | 6313 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6314 | |
5c632425 | 6315 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6316 | { |
6317 | if (is_mi) | |
6318 | { | |
6319 | char mi_group[10]; | |
6320 | ||
5c632425 | 6321 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6322 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6323 | } |
6324 | else | |
6325 | { | |
6326 | if (i == 0) | |
112e8700 | 6327 | uiout->text (" inf "); |
998580f1 | 6328 | else |
112e8700 | 6329 | uiout->text (", "); |
998580f1 | 6330 | |
5c632425 | 6331 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6332 | } |
6333 | } | |
998580f1 MK |
6334 | } |
6335 | ||
9db0d853 SM |
6336 | /* See breakpoint.h. */ |
6337 | ||
6338 | bool fix_breakpoint_script_output_globally = false; | |
6339 | ||
a38118e5 PA |
6340 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6341 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6342 | info breakpoints" show the software breakpoint locations of | |
6343 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6344 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6345 | print_one method did something; false otherwise. */ | |
269b11a2 | 6346 | |
c01e038b | 6347 | static bool |
269b11a2 PA |
6348 | print_one_breakpoint_location (struct breakpoint *b, |
6349 | struct bp_location *loc, | |
6350 | int loc_number, | |
6351 | struct bp_location **last_loc, | |
a38118e5 | 6352 | int allflag, bool raw_loc) |
269b11a2 PA |
6353 | { |
6354 | struct command_line *l; | |
c2c6d25f | 6355 | static char bpenables[] = "nynny"; |
c906108c | 6356 | |
79a45e25 | 6357 | struct ui_out *uiout = current_uiout; |
d8de7963 AB |
6358 | bool header_of_multiple = false; |
6359 | bool part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6360 | struct value_print_options opts; |
6361 | ||
6362 | get_user_print_options (&opts); | |
0d381245 VP |
6363 | |
6364 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6365 | /* See comment in print_one_breakpoint concerning treatment of |
6366 | breakpoints with single disabled location. */ | |
0d381245 VP |
6367 | if (loc == NULL |
6368 | && (b->loc != NULL | |
b5fa468f TBA |
6369 | && (b->loc->next != NULL |
6370 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
d8de7963 | 6371 | header_of_multiple = true; |
0d381245 VP |
6372 | if (loc == NULL) |
6373 | loc = b->loc; | |
6374 | ||
c4093a6a JM |
6375 | annotate_record (); |
6376 | ||
6377 | /* 1 */ | |
6378 | annotate_field (0); | |
0d381245 | 6379 | if (part_of_multiple) |
528e1572 | 6380 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6381 | else |
381befee | 6382 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6383 | |
6384 | /* 2 */ | |
6385 | annotate_field (1); | |
0d381245 | 6386 | if (part_of_multiple) |
112e8700 | 6387 | uiout->field_skip ("type"); |
269b11a2 | 6388 | else |
112e8700 | 6389 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6390 | |
6391 | /* 3 */ | |
6392 | annotate_field (2); | |
0d381245 | 6393 | if (part_of_multiple) |
112e8700 | 6394 | uiout->field_skip ("disp"); |
0d381245 | 6395 | else |
112e8700 | 6396 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6397 | |
c4093a6a JM |
6398 | /* 4 */ |
6399 | annotate_field (3); | |
0d381245 | 6400 | if (part_of_multiple) |
fbcda577 PA |
6401 | { |
6402 | /* For locations that are disabled because of an invalid | |
6403 | condition, display "N*" on the CLI, where "*" refers to a | |
6404 | footnote below the table. For MI, simply display a "N" | |
6405 | without a footnote. On the CLI, for enabled locations whose | |
6406 | breakpoint is disabled, display "y-". */ | |
6407 | auto get_enable_state = [uiout, loc] () -> const char * | |
287de656 | 6408 | { |
fbcda577 PA |
6409 | if (uiout->is_mi_like_p ()) |
6410 | { | |
6411 | if (loc->disabled_by_cond) | |
6412 | return "N"; | |
6413 | else if (!loc->enabled) | |
6414 | return "n"; | |
6415 | else | |
6416 | return "y"; | |
6417 | } | |
6418 | else | |
6419 | { | |
6420 | if (loc->disabled_by_cond) | |
6421 | return "N*"; | |
6422 | else if (!loc->enabled) | |
6423 | return "n"; | |
6424 | else if (!breakpoint_enabled (loc->owner)) | |
6425 | return "y-"; | |
6426 | else | |
6427 | return "y"; | |
6428 | } | |
6429 | }; | |
6430 | uiout->field_string ("enabled", get_enable_state ()); | |
6431 | } | |
0d381245 | 6432 | else |
112e8700 | 6433 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6434 | |
c4093a6a | 6435 | /* 5 and 6 */ |
c01e038b | 6436 | bool result = false; |
c47614fe | 6437 | if (!raw_loc && b->print_one (last_loc)) |
c01e038b | 6438 | result = true; |
3086aeae | 6439 | else |
a38118e5 PA |
6440 | { |
6441 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6442 | { |
6443 | struct watchpoint *w = (struct watchpoint *) b; | |
6444 | ||
6445 | /* Field 4, the address, is omitted (which makes the columns | |
6446 | not line up too nicely with the headers, but the effect | |
6447 | is relatively readable). */ | |
6448 | if (opts.addressprint) | |
112e8700 | 6449 | uiout->field_skip ("addr"); |
3a5c3e22 | 6450 | annotate_field (5); |
a4c50be3 | 6451 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6452 | } |
f06f1252 TT |
6453 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6454 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6455 | { |
6456 | if (opts.addressprint) | |
6457 | { | |
6458 | annotate_field (4); | |
6459 | if (header_of_multiple) | |
7f6aba03 TT |
6460 | uiout->field_string ("addr", "<MULTIPLE>", |
6461 | metadata_style.style ()); | |
a38118e5 | 6462 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6463 | uiout->field_string ("addr", "<PENDING>", |
6464 | metadata_style.style ()); | |
a38118e5 PA |
6465 | else |
6466 | uiout->field_core_addr ("addr", | |
6467 | loc->gdbarch, loc->address); | |
6468 | } | |
6469 | annotate_field (5); | |
6470 | if (!header_of_multiple) | |
6471 | print_breakpoint_location (b, loc); | |
6472 | if (b->loc) | |
6473 | *last_loc = b->loc; | |
6474 | } | |
6475 | } | |
6c95b8df | 6476 | |
998580f1 | 6477 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6478 | { |
5c632425 | 6479 | std::vector<int> inf_nums; |
998580f1 | 6480 | int mi_only = 1; |
6c95b8df | 6481 | |
08036331 | 6482 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6483 | { |
6484 | if (inf->pspace == loc->pspace) | |
5c632425 | 6485 | inf_nums.push_back (inf->num); |
6c95b8df | 6486 | } |
998580f1 | 6487 | |
7594741e AB |
6488 | /* For backward compatibility, don't display inferiors in CLI unless |
6489 | there are several. Always display for MI. */ | |
6490 | if (allflag | |
6491 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6492 | && (program_spaces.size () > 1 | |
6493 | || number_of_inferiors () > 1) | |
6494 | /* LOC is for existing B, it cannot be in | |
6495 | moribund_locations and thus having NULL OWNER. */ | |
6496 | && loc->owner->type != bp_catchpoint)) | |
998580f1 | 6497 | mi_only = 0; |
5c632425 | 6498 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6499 | } |
6500 | ||
944b1b18 AB |
6501 | /* In the MI output, each location of a thread or task specific |
6502 | breakpoint includes the relevant thread or task ID. This is done for | |
6503 | backwards compatibility reasons. | |
6504 | ||
6505 | For the CLI output, the thread/task information is printed on a | |
6506 | separate line, see the 'stop only in thread' and 'stop only in task' | |
6507 | output below. */ | |
2fd9a436 | 6508 | if (part_of_multiple && uiout->is_mi_like_p ()) |
c4093a6a | 6509 | { |
4a306c9a | 6510 | if (b->thread != -1) |
944b1b18 | 6511 | uiout->field_signed ("thread", b->thread); |
2ecee236 | 6512 | else if (b->task != -1) |
944b1b18 | 6513 | uiout->field_signed ("task", b->task); |
c4093a6a | 6514 | } |
f1310107 | 6515 | |
112e8700 | 6516 | uiout->text ("\n"); |
f1310107 | 6517 | |
348d480f | 6518 | if (!part_of_multiple) |
c47614fe | 6519 | b->print_one_detail (uiout); |
f1310107 | 6520 | |
0d381245 | 6521 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6522 | { |
6523 | annotate_field (6); | |
112e8700 | 6524 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6525 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6526 | the frame ID. */ |
112e8700 | 6527 | uiout->field_core_addr ("frame", |
5af949e3 | 6528 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6529 | uiout->text ("\n"); |
c4093a6a JM |
6530 | } |
6531 | ||
28010a5d | 6532 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6533 | { |
6534 | annotate_field (7); | |
d77f58be | 6535 | if (is_tracepoint (b)) |
112e8700 | 6536 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6537 | else |
112e8700 | 6538 | uiout->text ("\tstop only if "); |
6f781ee3 | 6539 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6540 | |
6541 | /* Print whether the target is doing the breakpoint's condition | |
6542 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6543 | if (is_breakpoint (b) | |
6544 | && breakpoint_condition_evaluation_mode () | |
6545 | == condition_evaluation_target) | |
6546 | { | |
6a831f06 PA |
6547 | uiout->message (" (%pF evals)", |
6548 | string_field ("evaluated-by", | |
6549 | bp_condition_evaluator (b))); | |
b775012e | 6550 | } |
112e8700 | 6551 | uiout->text ("\n"); |
0101ce28 JJ |
6552 | } |
6553 | ||
0d381245 | 6554 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6555 | { |
4a64f543 | 6556 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6557 | uiout->text ("\tstop only in thread "); |
6558 | if (uiout->is_mi_like_p ()) | |
381befee | 6559 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6560 | else |
6561 | { | |
6562 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6563 | ||
112e8700 | 6564 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6565 | } |
112e8700 | 6566 | uiout->text ("\n"); |
c4093a6a | 6567 | } |
944b1b18 | 6568 | |
2ecee236 | 6569 | if (!part_of_multiple && b->task != -1) |
944b1b18 AB |
6570 | { |
6571 | uiout->text ("\tstop only in task "); | |
6572 | uiout->field_signed ("task", b->task); | |
6573 | uiout->text ("\n"); | |
6574 | } | |
6575 | ||
556ec64d YQ |
6576 | if (!part_of_multiple) |
6577 | { | |
6578 | if (b->hit_count) | |
31f56a27 YQ |
6579 | { |
6580 | /* FIXME should make an annotation for this. */ | |
6581 | if (is_catchpoint (b)) | |
112e8700 | 6582 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6583 | else if (is_tracepoint (b)) |
112e8700 | 6584 | uiout->text ("\ttracepoint"); |
31f56a27 | 6585 | else |
112e8700 SM |
6586 | uiout->text ("\tbreakpoint"); |
6587 | uiout->text (" already hit "); | |
381befee | 6588 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6589 | if (b->hit_count == 1) |
112e8700 | 6590 | uiout->text (" time\n"); |
31f56a27 | 6591 | else |
112e8700 | 6592 | uiout->text (" times\n"); |
31f56a27 | 6593 | } |
556ec64d YQ |
6594 | else |
6595 | { | |
31f56a27 | 6596 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6597 | if (uiout->is_mi_like_p ()) |
381befee | 6598 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6599 | } |
6600 | } | |
8b93c638 | 6601 | |
0d381245 | 6602 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6603 | { |
6604 | annotate_field (8); | |
6a831f06 PA |
6605 | uiout->message ("\tignore next %pF hits\n", |
6606 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6607 | } |
059fb39f | 6608 | |
816338b5 SS |
6609 | /* Note that an enable count of 1 corresponds to "enable once" |
6610 | behavior, which is reported by the combination of enablement and | |
6611 | disposition, so we don't need to mention it here. */ | |
6612 | if (!part_of_multiple && b->enable_count > 1) | |
6613 | { | |
6614 | annotate_field (8); | |
112e8700 | 6615 | uiout->text ("\tdisable after "); |
816338b5 SS |
6616 | /* Tweak the wording to clarify that ignore and enable counts |
6617 | are distinct, and have additive effect. */ | |
6618 | if (b->ignore_count) | |
112e8700 | 6619 | uiout->text ("additional "); |
816338b5 | 6620 | else |
112e8700 | 6621 | uiout->text ("next "); |
381befee | 6622 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6623 | uiout->text (" hits\n"); |
816338b5 SS |
6624 | } |
6625 | ||
f196051f SS |
6626 | if (!part_of_multiple && is_tracepoint (b)) |
6627 | { | |
6628 | struct tracepoint *tp = (struct tracepoint *) b; | |
6629 | ||
6630 | if (tp->traceframe_usage) | |
6631 | { | |
112e8700 | 6632 | uiout->text ("\ttrace buffer usage "); |
381befee | 6633 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6634 | uiout->text (" bytes\n"); |
f196051f SS |
6635 | } |
6636 | } | |
d3ce09f5 | 6637 | |
d1b0a7bf | 6638 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6639 | if (!part_of_multiple && l) |
c4093a6a JM |
6640 | { |
6641 | annotate_field (9); | |
9db0d853 SM |
6642 | |
6643 | bool use_fixed_output = | |
6644 | (uiout->test_flags (fix_breakpoint_script_output) | |
287de656 | 6645 | || fix_breakpoint_script_output_globally); |
9db0d853 SM |
6646 | |
6647 | gdb::optional<ui_out_emit_tuple> tuple_emitter; | |
6648 | gdb::optional<ui_out_emit_list> list_emitter; | |
6649 | ||
6650 | if (use_fixed_output) | |
6651 | list_emitter.emplace (uiout, "script"); | |
6652 | else | |
6653 | tuple_emitter.emplace (uiout, "script"); | |
6654 | ||
8b93c638 | 6655 | print_command_lines (uiout, l, 4); |
c4093a6a | 6656 | } |
d24317b4 | 6657 | |
d9b3f62e | 6658 | if (is_tracepoint (b)) |
1042e4c0 | 6659 | { |
d9b3f62e PA |
6660 | struct tracepoint *t = (struct tracepoint *) b; |
6661 | ||
6662 | if (!part_of_multiple && t->pass_count) | |
6663 | { | |
6664 | annotate_field (10); | |
112e8700 | 6665 | uiout->text ("\tpass count "); |
381befee | 6666 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6667 | uiout->text (" \n"); |
d9b3f62e | 6668 | } |
f2a8bc8a YQ |
6669 | |
6670 | /* Don't display it when tracepoint or tracepoint location is | |
6671 | pending. */ | |
6672 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6673 | { | |
6674 | annotate_field (11); | |
6675 | ||
112e8700 SM |
6676 | if (uiout->is_mi_like_p ()) |
6677 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6678 | loc->inserted ? "y" : "n"); |
6679 | else | |
6680 | { | |
6681 | if (loc->inserted) | |
112e8700 | 6682 | uiout->text ("\t"); |
f2a8bc8a | 6683 | else |
112e8700 SM |
6684 | uiout->text ("\tnot "); |
6685 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6686 | } |
6687 | } | |
1042e4c0 SS |
6688 | } |
6689 | ||
112e8700 | 6690 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6691 | { |
3a5c3e22 PA |
6692 | if (is_watchpoint (b)) |
6693 | { | |
6694 | struct watchpoint *w = (struct watchpoint *) b; | |
6695 | ||
a4c50be3 | 6696 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6697 | } |
264f9890 PA |
6698 | else if (b->locspec != nullptr) |
6699 | { | |
709438c7 | 6700 | const char *str = b->locspec->to_string (); |
264f9890 PA |
6701 | if (str != nullptr) |
6702 | uiout->field_string ("original-location", str); | |
6703 | } | |
d24317b4 | 6704 | } |
c01e038b TT |
6705 | |
6706 | return result; | |
c4093a6a | 6707 | } |
c5aa993b | 6708 | |
13674803 SM |
6709 | /* See breakpoint.h. */ |
6710 | ||
6711 | bool fix_multi_location_breakpoint_output_globally = false; | |
6712 | ||
0d381245 VP |
6713 | static void |
6714 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6715 | struct bp_location **last_loc, |
6c95b8df | 6716 | int allflag) |
0d381245 | 6717 | { |
79a45e25 | 6718 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6719 | bool use_fixed_output |
6720 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6721 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6722 | |
b4be1b06 | 6723 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6724 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6725 | allflag, false); | |
8d3788bd | 6726 | |
b4be1b06 SM |
6727 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6728 | are outside. */ | |
6729 | if (!use_fixed_output) | |
6730 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6731 | |
6732 | /* If this breakpoint has custom print function, | |
6733 | it's already printed. Otherwise, print individual | |
6734 | locations, if any. */ | |
c01e038b | 6735 | if (!printed || allflag) |
0d381245 | 6736 | { |
4a64f543 MS |
6737 | /* If breakpoint has a single location that is disabled, we |
6738 | print it as if it had several locations, since otherwise it's | |
6739 | hard to represent "breakpoint enabled, location disabled" | |
6740 | situation. | |
6741 | ||
6742 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6743 | internally, that's not a property exposed to users. |
6744 | ||
6745 | Likewise, while catchpoints may be implemented with | |
6746 | breakpoints (e.g., catch throw), that's not a property | |
6747 | exposed to users. We do however display the internal | |
6748 | breakpoint locations with "maint info breakpoints". */ | |
6749 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6750 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6751 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6752 | && (allflag |
b5fa468f TBA |
6753 | || (b->loc && (b->loc->next |
6754 | || !b->loc->enabled | |
6755 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6756 | { |
b4be1b06 SM |
6757 | gdb::optional<ui_out_emit_list> locations_list; |
6758 | ||
6759 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6760 | MI record. For later versions, place breakpoint locations in a | |
6761 | list. */ | |
6762 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6763 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6764 | |
b4be1b06 | 6765 | int n = 1; |
40cb8ca5 | 6766 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6767 | { |
b4be1b06 | 6768 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6769 | print_one_breakpoint_location (b, loc, n, last_loc, |
6770 | allflag, allflag); | |
40cb8ca5 | 6771 | n++; |
8d3788bd | 6772 | } |
0d381245 VP |
6773 | } |
6774 | } | |
6775 | } | |
6776 | ||
a6d9a66e UW |
6777 | static int |
6778 | breakpoint_address_bits (struct breakpoint *b) | |
6779 | { | |
6780 | int print_address_bits = 0; | |
a6d9a66e | 6781 | |
40cb8ca5 | 6782 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6783 | { |
6e14e441 PA |
6784 | if (!bl_address_is_meaningful (loc)) |
6785 | continue; | |
c7437ca6 | 6786 | |
6e14e441 | 6787 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6788 | if (addr_bit > print_address_bits) |
6789 | print_address_bits = addr_bit; | |
6790 | } | |
6791 | ||
6792 | return print_address_bits; | |
6793 | } | |
0d381245 | 6794 | |
65630365 | 6795 | /* See breakpoint.h. */ |
c5aa993b | 6796 | |
65630365 PA |
6797 | void |
6798 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6799 | { |
a6d9a66e | 6800 | struct bp_location *dummy_loc = NULL; |
65630365 | 6801 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6802 | } |
c5aa993b | 6803 | |
09d682a4 TT |
6804 | /* Return true if this breakpoint was set by the user, false if it is |
6805 | internal or momentary. */ | |
6806 | ||
6807 | int | |
6808 | user_breakpoint_p (struct breakpoint *b) | |
6809 | { | |
46c6471b | 6810 | return b->number > 0; |
09d682a4 TT |
6811 | } |
6812 | ||
93daf339 TT |
6813 | /* See breakpoint.h. */ |
6814 | ||
6815 | int | |
6816 | pending_breakpoint_p (struct breakpoint *b) | |
6817 | { | |
6818 | return b->loc == NULL; | |
6819 | } | |
6820 | ||
5c458ae8 SM |
6821 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6822 | ||
6823 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6824 | understood by number_or_range_parser. Only breakpoints included in this | |
6825 | list are then printed. | |
6826 | ||
6827 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6828 | ||
6829 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6830 | ones for which it returns true. | |
6831 | ||
6832 | Return the total number of breakpoints listed. */ | |
c906108c | 6833 | |
d77f58be | 6834 | static int |
5c458ae8 | 6835 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6836 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6837 | { |
a6d9a66e | 6838 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6839 | int nr_printable_breakpoints; |
79a45b7d | 6840 | struct value_print_options opts; |
a6d9a66e | 6841 | int print_address_bits = 0; |
269b11a2 | 6842 | int print_type_col_width = 14; |
79a45e25 | 6843 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6844 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6845 | |
79a45b7d TT |
6846 | get_user_print_options (&opts); |
6847 | ||
4a64f543 MS |
6848 | /* Compute the number of rows in the table, as well as the size |
6849 | required for address fields. */ | |
7f3b0473 | 6850 | nr_printable_breakpoints = 0; |
43892fdf | 6851 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6852 | { |
6853 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6854 | if (filter && !filter (b)) | |
6855 | continue; | |
6856 | ||
5c458ae8 | 6857 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6858 | accept. Skip the others. */ |
5c458ae8 | 6859 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6860 | { |
5c458ae8 | 6861 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6862 | continue; |
5c458ae8 | 6863 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6864 | continue; |
6865 | } | |
269b11a2 | 6866 | |
5c458ae8 | 6867 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6868 | { |
6869 | int addr_bit, type_len; | |
a6d9a66e | 6870 | |
e5a67952 MS |
6871 | addr_bit = breakpoint_address_bits (b); |
6872 | if (addr_bit > print_address_bits) | |
6873 | print_address_bits = addr_bit; | |
269b11a2 | 6874 | |
e5a67952 MS |
6875 | type_len = strlen (bptype_string (b->type)); |
6876 | if (type_len > print_type_col_width) | |
6877 | print_type_col_width = type_len; | |
6878 | ||
6879 | nr_printable_breakpoints++; | |
6880 | } | |
6881 | } | |
7f3b0473 | 6882 | |
4a2b031d TT |
6883 | { |
6884 | ui_out_emit_table table_emitter (uiout, | |
6885 | opts.addressprint ? 6 : 5, | |
6886 | nr_printable_breakpoints, | |
6887 | "BreakpointTable"); | |
6888 | ||
6889 | if (nr_printable_breakpoints > 0) | |
6890 | annotate_breakpoints_headers (); | |
6891 | if (nr_printable_breakpoints > 0) | |
6892 | annotate_field (0); | |
6893 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6894 | if (nr_printable_breakpoints > 0) | |
6895 | annotate_field (1); | |
6896 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6897 | if (nr_printable_breakpoints > 0) | |
6898 | annotate_field (2); | |
6899 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6900 | if (nr_printable_breakpoints > 0) | |
6901 | annotate_field (3); | |
6902 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6903 | if (opts.addressprint) | |
6904 | { | |
6905 | if (nr_printable_breakpoints > 0) | |
6906 | annotate_field (4); | |
6907 | if (print_address_bits <= 32) | |
6908 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6909 | else | |
6910 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6911 | } | |
6912 | if (nr_printable_breakpoints > 0) | |
6913 | annotate_field (5); | |
6914 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6915 | uiout->table_body (); | |
6916 | if (nr_printable_breakpoints > 0) | |
6917 | annotate_breakpoints_table (); | |
6918 | ||
43892fdf | 6919 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6920 | { |
6921 | QUIT; | |
6922 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6923 | if (filter && !filter (b)) | |
6924 | continue; | |
e5a67952 | 6925 | |
5c458ae8 | 6926 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6927 | accept. Skip the others. */ |
e5a67952 | 6928 | |
5c458ae8 | 6929 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6930 | { |
5c458ae8 | 6931 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6932 | { |
5c458ae8 | 6933 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6934 | continue; |
6935 | } | |
6936 | else /* all others */ | |
6937 | { | |
5c458ae8 | 6938 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6939 | continue; |
6940 | } | |
6941 | } | |
6942 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6943 | show_internal is set. */ |
6944 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6945 | { |
6946 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6947 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6948 | if (loc->disabled_by_cond) |
6949 | has_disabled_by_cond_location = true; | |
6950 | } | |
4a2b031d TT |
6951 | } |
6952 | } | |
698384cd | 6953 | |
7f3b0473 | 6954 | if (nr_printable_breakpoints == 0) |
c906108c | 6955 | { |
4a64f543 MS |
6956 | /* If there's a filter, let the caller decide how to report |
6957 | empty list. */ | |
d77f58be SS |
6958 | if (!filter) |
6959 | { | |
5c458ae8 | 6960 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6961 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6962 | else |
112e8700 | 6963 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6964 | bp_num_list); |
d77f58be | 6965 | } |
c906108c SS |
6966 | } |
6967 | else | |
c4093a6a | 6968 | { |
a6d9a66e UW |
6969 | if (last_loc && !server_command) |
6970 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6971 | |
85c88e2a | 6972 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6973 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6974 | "location.\n")); | |
c4093a6a | 6975 | } |
c906108c | 6976 | |
4a64f543 | 6977 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6978 | there have been breakpoints? */ |
c906108c | 6979 | annotate_breakpoints_table_end (); |
d77f58be SS |
6980 | |
6981 | return nr_printable_breakpoints; | |
c906108c SS |
6982 | } |
6983 | ||
ad443146 SS |
6984 | /* Display the value of default-collect in a way that is generally |
6985 | compatible with the breakpoint list. */ | |
6986 | ||
6987 | static void | |
6988 | default_collect_info (void) | |
6989 | { | |
79a45e25 PA |
6990 | struct ui_out *uiout = current_uiout; |
6991 | ||
ad443146 SS |
6992 | /* If it has no value (which is frequently the case), say nothing; a |
6993 | message like "No default-collect." gets in user's face when it's | |
6994 | not wanted. */ | |
e0700ba4 | 6995 | if (default_collect.empty ()) |
ad443146 SS |
6996 | return; |
6997 | ||
6998 | /* The following phrase lines up nicely with per-tracepoint collect | |
6999 | actions. */ | |
112e8700 SM |
7000 | uiout->text ("default collect "); |
7001 | uiout->field_string ("default-collect", default_collect); | |
7002 | uiout->text (" \n"); | |
ad443146 SS |
7003 | } |
7004 | ||
c906108c | 7005 | static void |
0b39b52e | 7006 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 7007 | { |
5c458ae8 | 7008 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
7009 | |
7010 | default_collect_info (); | |
d77f58be SS |
7011 | } |
7012 | ||
7013 | static void | |
1d12d88f | 7014 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 7015 | { |
5c458ae8 | 7016 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 7017 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
7018 | |
7019 | if (num_printed == 0) | |
7020 | { | |
e5a67952 | 7021 | if (args == NULL || *args == '\0') |
112e8700 | 7022 | uiout->message ("No watchpoints.\n"); |
d77f58be | 7023 | else |
112e8700 | 7024 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 7025 | } |
c906108c SS |
7026 | } |
7027 | ||
7a292a7a | 7028 | static void |
4495129a | 7029 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 7030 | { |
5c458ae8 | 7031 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
7032 | |
7033 | default_collect_info (); | |
c906108c SS |
7034 | } |
7035 | ||
d8de7963 | 7036 | static bool |
714835d5 | 7037 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 7038 | struct program_space *pspace, |
714835d5 | 7039 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 7040 | { |
40cb8ca5 | 7041 | for (bp_location *bl : b->locations ()) |
0d381245 | 7042 | { |
6c95b8df PA |
7043 | if (bl->pspace == pspace |
7044 | && bl->address == pc | |
0d381245 | 7045 | && (!overlay_debugging || bl->section == section)) |
d8de7963 | 7046 | return true; |
0d381245 | 7047 | } |
d8de7963 | 7048 | return false; |
0d381245 VP |
7049 | } |
7050 | ||
bd21b6c9 | 7051 | /* See breakpoint.h. */ |
c906108c | 7052 | |
bd21b6c9 | 7053 | void |
6c95b8df PA |
7054 | describe_other_breakpoints (struct gdbarch *gdbarch, |
7055 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 7056 | struct obj_section *section, int thread) |
c906108c | 7057 | { |
52f0bd74 | 7058 | int others = 0; |
c906108c | 7059 | |
43892fdf | 7060 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 7061 | others += (user_breakpoint_p (b) |
dda83cd7 | 7062 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 7063 | |
c906108c SS |
7064 | if (others > 0) |
7065 | { | |
a3f17187 | 7066 | if (others == 1) |
6cb06a8c | 7067 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 7068 | else /* if (others == ???) */ |
6cb06a8c | 7069 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 7070 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 7071 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
7072 | { |
7073 | others--; | |
6cb06a8c | 7074 | gdb_printf ("%d", b->number); |
0d381245 | 7075 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 7076 | gdb_printf (" (all threads)"); |
0d381245 | 7077 | else if (b->thread != -1) |
ce068c5f AB |
7078 | { |
7079 | struct thread_info *thr = find_thread_global_id (b->thread); | |
7080 | gdb_printf (" (thread %s)", print_thread_id (thr)); | |
7081 | } | |
8282ad74 | 7082 | else if (b->task != -1) |
f1f517e8 | 7083 | gdb_printf (" (task %d)", b->task); |
6cb06a8c TT |
7084 | gdb_printf ("%s%s ", |
7085 | ((b->enable_state == bp_disabled | |
7086 | || b->enable_state == bp_call_disabled) | |
7087 | ? " (disabled)" | |
7088 | : ""), | |
7089 | (others > 1) ? "," | |
7090 | : ((others == 1) ? " and" : "")); | |
0d381245 | 7091 | } |
6a831f06 PA |
7092 | current_uiout->message (_("also set at pc %ps.\n"), |
7093 | styled_string (address_style.style (), | |
7094 | paddress (gdbarch, pc))); | |
c906108c SS |
7095 | } |
7096 | } | |
7097 | \f | |
c906108c | 7098 | |
cb1e4e32 PA |
7099 | /* Return true iff it is meaningful to use the address member of LOC. |
7100 | For some breakpoint types, the locations' address members are | |
7101 | irrelevant and it makes no sense to attempt to compare them to | |
7102 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 7103 | |
cb1e4e32 PA |
7104 | More specifically, software watchpoints and catchpoints that are |
7105 | not backed by breakpoints always have a zero valued location | |
7106 | address and we don't want to mark breakpoints of any of these types | |
7107 | to be a duplicate of an actual breakpoint location at address | |
7108 | zero. */ | |
e4f237da | 7109 | |
cb1e4e32 PA |
7110 | static bool |
7111 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 7112 | { |
cb1e4e32 | 7113 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
7114 | } |
7115 | ||
7116 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
7117 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
7118 | ||
d8de7963 | 7119 | static bool |
b2ff9ed3 AB |
7120 | watchpoint_locations_match (const struct bp_location *loc1, |
7121 | const struct bp_location *loc2) | |
2d134ed3 | 7122 | { |
3a5c3e22 PA |
7123 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
7124 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
7125 | ||
7126 | /* Both of them must exist. */ | |
7127 | gdb_assert (w1 != NULL); | |
7128 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 7129 | |
4a64f543 MS |
7130 | /* If the target can evaluate the condition expression in hardware, |
7131 | then we we need to insert both watchpoints even if they are at | |
7132 | the same place. Otherwise the watchpoint will only trigger when | |
7133 | the condition of whichever watchpoint was inserted evaluates to | |
7134 | true, not giving a chance for GDB to check the condition of the | |
7135 | other watchpoint. */ | |
3a5c3e22 | 7136 | if ((w1->cond_exp |
4a64f543 MS |
7137 | && target_can_accel_watchpoint_condition (loc1->address, |
7138 | loc1->length, | |
0cf6dd15 | 7139 | loc1->watchpoint_type, |
4d01a485 | 7140 | w1->cond_exp.get ())) |
3a5c3e22 | 7141 | || (w2->cond_exp |
4a64f543 MS |
7142 | && target_can_accel_watchpoint_condition (loc2->address, |
7143 | loc2->length, | |
0cf6dd15 | 7144 | loc2->watchpoint_type, |
4d01a485 | 7145 | w2->cond_exp.get ()))) |
d8de7963 | 7146 | return false; |
0cf6dd15 | 7147 | |
85d721b8 PA |
7148 | /* Note that this checks the owner's type, not the location's. In |
7149 | case the target does not support read watchpoints, but does | |
7150 | support access watchpoints, we'll have bp_read_watchpoint | |
7151 | watchpoints with hw_access locations. Those should be considered | |
7152 | duplicates of hw_read locations. The hw_read locations will | |
7153 | become hw_access locations later. */ | |
2d134ed3 PA |
7154 | return (loc1->owner->type == loc2->owner->type |
7155 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7156 | && loc1->address == loc2->address | |
7157 | && loc1->length == loc2->length); | |
e4f237da KB |
7158 | } |
7159 | ||
31e77af2 | 7160 | /* See breakpoint.h. */ |
6c95b8df | 7161 | |
31e77af2 | 7162 | int |
accd0bcd YQ |
7163 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
7164 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 7165 | { |
f5656ead | 7166 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7167 | || aspace1 == aspace2) |
7168 | && addr1 == addr2); | |
7169 | } | |
7170 | ||
f1310107 TJB |
7171 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7172 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7173 | matches ASPACE2. On targets that have global breakpoints, the address | |
7174 | space doesn't really matter. */ | |
7175 | ||
d8de7963 | 7176 | static bool |
accd0bcd YQ |
7177 | breakpoint_address_match_range (const address_space *aspace1, |
7178 | CORE_ADDR addr1, | |
7179 | int len1, const address_space *aspace2, | |
f1310107 TJB |
7180 | CORE_ADDR addr2) |
7181 | { | |
f5656ead | 7182 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7183 | || aspace1 == aspace2) |
7184 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7185 | } | |
7186 | ||
7187 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7188 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7189 | matches the breakpoint's address space. On targets that have global | |
7190 | breakpoints, the address space doesn't really matter. */ | |
7191 | ||
d8de7963 | 7192 | static bool |
f1310107 | 7193 | breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 7194 | const address_space *aspace, |
f1310107 TJB |
7195 | CORE_ADDR addr) |
7196 | { | |
7197 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7198 | aspace, addr) | |
7199 | || (bl->length | |
7200 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7201 | bl->address, bl->length, | |
7202 | aspace, addr))); | |
7203 | } | |
7204 | ||
d35ae833 PA |
7205 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
7206 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
7207 | match happens only if ASPACE matches the breakpoint's address | |
7208 | space. On targets that have global breakpoints, the address space | |
7209 | doesn't really matter. */ | |
7210 | ||
d8de7963 | 7211 | static bool |
d35ae833 | 7212 | breakpoint_location_address_range_overlap (struct bp_location *bl, |
accd0bcd | 7213 | const address_space *aspace, |
d35ae833 PA |
7214 | CORE_ADDR addr, int len) |
7215 | { | |
7216 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7217 | || bl->pspace->aspace == aspace) | |
7218 | { | |
7219 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7220 | ||
7221 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7222 | return 1; | |
7223 | } | |
7224 | return 0; | |
7225 | } | |
7226 | ||
1e4d1764 YQ |
7227 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7228 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7229 | true, otherwise returns false. */ | |
7230 | ||
d8de7963 | 7231 | static bool |
b2ff9ed3 AB |
7232 | tracepoint_locations_match (const struct bp_location *loc1, |
7233 | const struct bp_location *loc2) | |
1e4d1764 YQ |
7234 | { |
7235 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7236 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7237 | locations at the same address of different tracepoints are regarded as | |
7238 | different locations. */ | |
7239 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7240 | else | |
d8de7963 | 7241 | return false; |
1e4d1764 YQ |
7242 | } |
7243 | ||
2d134ed3 | 7244 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 7245 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
7246 | the same location. If SW_HW_BPS_MATCH is true, then software |
7247 | breakpoint locations and hardware breakpoint locations match, | |
7248 | otherwise they don't. */ | |
2d134ed3 | 7249 | |
d8de7963 | 7250 | static bool |
b2ff9ed3 AB |
7251 | breakpoint_locations_match (const struct bp_location *loc1, |
7252 | const struct bp_location *loc2, | |
7f32a4d5 | 7253 | bool sw_hw_bps_match) |
2d134ed3 | 7254 | { |
2bdf28a0 JK |
7255 | int hw_point1, hw_point2; |
7256 | ||
7257 | /* Both of them must not be in moribund_locations. */ | |
7258 | gdb_assert (loc1->owner != NULL); | |
7259 | gdb_assert (loc2->owner != NULL); | |
7260 | ||
7261 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7262 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7263 | |
7264 | if (hw_point1 != hw_point2) | |
d8de7963 | 7265 | return false; |
2d134ed3 PA |
7266 | else if (hw_point1) |
7267 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7268 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7269 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7270 | else |
7f32a4d5 PA |
7271 | /* We compare bp_location.length in order to cover ranged |
7272 | breakpoints. Keep this in sync with | |
7273 | bp_location_is_less_than. */ | |
f1310107 TJB |
7274 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
7275 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 7276 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 7277 | && loc1->length == loc2->length); |
2d134ed3 PA |
7278 | } |
7279 | ||
76897487 KB |
7280 | static void |
7281 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
d8de7963 | 7282 | int bnum, bool have_bnum) |
76897487 | 7283 | { |
f63fbe86 MS |
7284 | /* The longest string possibly returned by hex_string_custom |
7285 | is 50 chars. These must be at least that big for safety. */ | |
7286 | char astr1[64]; | |
7287 | char astr2[64]; | |
76897487 | 7288 | |
bb599908 PH |
7289 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7290 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7291 | if (have_bnum) |
8a3fe4f8 | 7292 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 7293 | bnum, astr1, astr2); |
76897487 | 7294 | else |
8a3fe4f8 | 7295 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7296 | } |
7297 | ||
4a64f543 MS |
7298 | /* Adjust a breakpoint's address to account for architectural |
7299 | constraints on breakpoint placement. Return the adjusted address. | |
7300 | Note: Very few targets require this kind of adjustment. For most | |
7301 | targets, this function is simply the identity function. */ | |
76897487 KB |
7302 | |
7303 | static CORE_ADDR | |
a6d9a66e | 7304 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
60270718 AB |
7305 | CORE_ADDR bpaddr, enum bptype bptype, |
7306 | struct program_space *pspace) | |
76897487 | 7307 | { |
60270718 AB |
7308 | gdb_assert (pspace != nullptr); |
7309 | ||
a0de8c21 YQ |
7310 | if (bptype == bp_watchpoint |
7311 | || bptype == bp_hardware_watchpoint | |
7312 | || bptype == bp_read_watchpoint | |
7313 | || bptype == bp_access_watchpoint | |
7314 | || bptype == bp_catchpoint) | |
88f7da05 KB |
7315 | { |
7316 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 7317 | have their addresses modified. */ |
88f7da05 KB |
7318 | return bpaddr; |
7319 | } | |
7c16b83e PA |
7320 | else if (bptype == bp_single_step) |
7321 | { | |
7322 | /* Single-step breakpoints should not have their addresses | |
7323 | modified. If there's any architectural constrain that | |
7324 | applies to this address, then it should have already been | |
7325 | taken into account when the breakpoint was created in the | |
7326 | first place. If we didn't do this, stepping through e.g., | |
7327 | Thumb-2 IT blocks would break. */ | |
7328 | return bpaddr; | |
7329 | } | |
76897487 KB |
7330 | else |
7331 | { | |
a0de8c21 YQ |
7332 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7333 | ||
60270718 AB |
7334 | /* Some targets have architectural constraints on the placement |
7335 | of breakpoint instructions. Obtain the adjusted address. */ | |
a0de8c21 YQ |
7336 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) |
7337 | { | |
60270718 AB |
7338 | /* Targets that implement this adjustment function will likely |
7339 | inspect either the symbol table, target memory at BPADDR, or | |
7340 | even state registers, so ensure a suitable thread (and its | |
7341 | associated program space) are currently selected. */ | |
7342 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
7343 | switch_to_program_space_and_thread (pspace); | |
7344 | adjusted_bpaddr | |
7345 | = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
a0de8c21 | 7346 | } |
76897487 | 7347 | |
d88cb738 LM |
7348 | adjusted_bpaddr |
7349 | = gdbarch_remove_non_address_bits (gdbarch, adjusted_bpaddr); | |
76897487 KB |
7350 | |
7351 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7352 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7353 | is required. */ |
7354 | if (adjusted_bpaddr != bpaddr) | |
d8de7963 | 7355 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, false); |
76897487 KB |
7356 | |
7357 | return adjusted_bpaddr; | |
7358 | } | |
7359 | } | |
7360 | ||
cb1e4e32 PA |
7361 | static bp_loc_type |
7362 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7363 | { |
cb1e4e32 | 7364 | switch (type) |
e049a4b5 DJ |
7365 | { |
7366 | case bp_breakpoint: | |
7c16b83e | 7367 | case bp_single_step: |
e049a4b5 DJ |
7368 | case bp_until: |
7369 | case bp_finish: | |
7370 | case bp_longjmp: | |
7371 | case bp_longjmp_resume: | |
e2e4d78b | 7372 | case bp_longjmp_call_dummy: |
186c406b TT |
7373 | case bp_exception: |
7374 | case bp_exception_resume: | |
e049a4b5 | 7375 | case bp_step_resume: |
2c03e5be | 7376 | case bp_hp_step_resume: |
e049a4b5 DJ |
7377 | case bp_watchpoint_scope: |
7378 | case bp_call_dummy: | |
aa7d318d | 7379 | case bp_std_terminate: |
e049a4b5 DJ |
7380 | case bp_shlib_event: |
7381 | case bp_thread_event: | |
7382 | case bp_overlay_event: | |
4efc6507 | 7383 | case bp_jit_event: |
0fd8e87f | 7384 | case bp_longjmp_master: |
aa7d318d | 7385 | case bp_std_terminate_master: |
186c406b | 7386 | case bp_exception_master: |
0e30163f JK |
7387 | case bp_gnu_ifunc_resolver: |
7388 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7389 | case bp_dprintf: |
cb1e4e32 | 7390 | return bp_loc_software_breakpoint; |
0b63c811 | 7391 | |
e049a4b5 | 7392 | case bp_hardware_breakpoint: |
cb1e4e32 | 7393 | return bp_loc_hardware_breakpoint; |
0b63c811 | 7394 | |
e049a4b5 DJ |
7395 | case bp_hardware_watchpoint: |
7396 | case bp_read_watchpoint: | |
7397 | case bp_access_watchpoint: | |
cb1e4e32 | 7398 | return bp_loc_hardware_watchpoint; |
0b63c811 | 7399 | |
e049a4b5 | 7400 | case bp_watchpoint: |
6e14e441 | 7401 | return bp_loc_software_watchpoint; |
0b63c811 | 7402 | |
15c3d785 PA |
7403 | case bp_tracepoint: |
7404 | case bp_fast_tracepoint: | |
0fb4aa4b | 7405 | case bp_static_tracepoint: |
7b572efb | 7406 | case bp_static_marker_tracepoint: |
0b63c811 SM |
7407 | return bp_loc_tracepoint; |
7408 | ||
7409 | case bp_catchpoint: | |
cb1e4e32 | 7410 | return bp_loc_other; |
0b63c811 | 7411 | |
e049a4b5 | 7412 | default: |
f34652de | 7413 | internal_error (_("unknown breakpoint type")); |
e049a4b5 | 7414 | } |
cb1e4e32 PA |
7415 | } |
7416 | ||
7417 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7418 | { | |
7419 | this->owner = owner; | |
7420 | this->cond_bytecode = NULL; | |
7421 | this->shlib_disabled = 0; | |
7422 | this->enabled = 1; | |
b5fa468f | 7423 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7424 | |
7425 | this->loc_type = type; | |
e049a4b5 | 7426 | |
cb1e4e32 PA |
7427 | if (this->loc_type == bp_loc_software_breakpoint |
7428 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7429 | mark_breakpoint_location_modified (this); | |
7430 | ||
b6433ede | 7431 | incref (); |
cb1e4e32 PA |
7432 | } |
7433 | ||
7434 | bp_location::bp_location (breakpoint *owner) | |
7435 | : bp_location::bp_location (owner, | |
7436 | bp_location_from_bp_type (owner->type)) | |
7437 | { | |
28010a5d PA |
7438 | } |
7439 | ||
f431efe5 PA |
7440 | /* Decrement reference count. If the reference count reaches 0, |
7441 | destroy the bp_location. Sets *BLP to NULL. */ | |
7442 | ||
7443 | static void | |
7444 | decref_bp_location (struct bp_location **blp) | |
7445 | { | |
b6433ede | 7446 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7447 | *blp = NULL; |
7448 | } | |
7449 | ||
346774a9 | 7450 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7451 | |
b270e6f9 TT |
7452 | static breakpoint * |
7453 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7454 | { |
346774a9 | 7455 | struct breakpoint *b1; |
b270e6f9 | 7456 | struct breakpoint *result = b.get (); |
c906108c | 7457 | |
346774a9 PA |
7458 | /* Add this breakpoint to the end of the chain so that a list of |
7459 | breakpoints will come out in order of increasing numbers. */ | |
7460 | ||
7461 | b1 = breakpoint_chain; | |
7462 | if (b1 == 0) | |
b270e6f9 | 7463 | breakpoint_chain = b.release (); |
346774a9 PA |
7464 | else |
7465 | { | |
7466 | while (b1->next) | |
7467 | b1 = b1->next; | |
b270e6f9 | 7468 | b1->next = b.release (); |
346774a9 | 7469 | } |
b270e6f9 TT |
7470 | |
7471 | return result; | |
346774a9 PA |
7472 | } |
7473 | ||
0ba852ab | 7474 | /* Initialize loc->function_name. */ |
0e30163f | 7475 | |
0d381245 | 7476 | static void |
0ba852ab | 7477 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7478 | { |
2bdf28a0 JK |
7479 | gdb_assert (loc->owner != NULL); |
7480 | ||
0d381245 | 7481 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7482 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7483 | || is_tracepoint (loc->owner)) |
0d381245 | 7484 | { |
2c02bd72 | 7485 | const char *function_name; |
0e30163f | 7486 | |
3467ec66 | 7487 | if (loc->msymbol != NULL |
60f62e2b SM |
7488 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7489 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7490 | { |
7491 | struct breakpoint *b = loc->owner; | |
7492 | ||
c9d95fa3 | 7493 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7494 | |
7495 | if (b->type == bp_breakpoint && b->loc == loc | |
7496 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7497 | { |
7498 | /* Create only the whole new breakpoint of this type but do not | |
7499 | mess more complicated breakpoints with multiple locations. */ | |
7500 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7501 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7502 | breakpoint. */ |
3467ec66 | 7503 | loc->related_address = loc->address; |
0e30163f JK |
7504 | } |
7505 | } | |
3467ec66 PA |
7506 | else |
7507 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7508 | |
2c02bd72 | 7509 | if (function_name) |
23d6ee64 | 7510 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7511 | } |
7512 | } | |
7513 | ||
a6d9a66e | 7514 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7515 | struct gdbarch * |
a6d9a66e UW |
7516 | get_sal_arch (struct symtab_and_line sal) |
7517 | { | |
7518 | if (sal.section) | |
08feed99 | 7519 | return sal.section->objfile->arch (); |
a6d9a66e | 7520 | if (sal.symtab) |
3c86fae3 | 7521 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7522 | |
7523 | return NULL; | |
7524 | } | |
7525 | ||
53a5351d | 7526 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7527 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7528 | initiated the operation. */ | |
c906108c SS |
7529 | |
7530 | void | |
186c406b | 7531 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7532 | { |
5d5658a1 | 7533 | int thread = tp->global_num; |
0fd8e87f UW |
7534 | |
7535 | /* To avoid having to rescan all objfile symbols at every step, | |
7536 | we maintain a list of continually-inserted but always disabled | |
7537 | longjmp "master" breakpoints. Here, we simply create momentary | |
7538 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7539 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7540 | if (b->pspace == current_program_space |
186c406b TT |
7541 | && (b->type == bp_longjmp_master |
7542 | || b->type == bp_exception_master)) | |
0fd8e87f | 7543 | { |
06edf0c0 | 7544 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
e2e4d78b JK |
7545 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7546 | after their removal. */ | |
7ab97995 | 7547 | momentary_breakpoint_from_master (b, type, 1, thread); |
0fd8e87f | 7548 | } |
186c406b TT |
7549 | |
7550 | tp->initiating_frame = frame; | |
c906108c SS |
7551 | } |
7552 | ||
611c83ae | 7553 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7554 | void |
611c83ae | 7555 | delete_longjmp_breakpoint (int thread) |
c906108c | 7556 | { |
1428b37a | 7557 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7558 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7559 | { |
7560 | if (b->thread == thread) | |
7561 | delete_breakpoint (b); | |
7562 | } | |
c906108c SS |
7563 | } |
7564 | ||
f59f708a PA |
7565 | void |
7566 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7567 | { | |
1428b37a | 7568 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7569 | if (b->type == bp_longjmp || b->type == bp_exception) |
7570 | { | |
7571 | if (b->thread == thread) | |
7572 | b->disposition = disp_del_at_next_stop; | |
7573 | } | |
7574 | } | |
7575 | ||
e2e4d78b JK |
7576 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7577 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7578 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7579 | breakpoints. */ | |
7580 | ||
7581 | struct breakpoint * | |
7582 | set_longjmp_breakpoint_for_call_dummy (void) | |
7583 | { | |
43892fdf | 7584 | breakpoint *retval = nullptr; |
e2e4d78b | 7585 | |
43892fdf | 7586 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7587 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7588 | { | |
7ab97995 PA |
7589 | int thread = inferior_thread ()->global_num; |
7590 | breakpoint *new_b | |
7591 | = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7592 | 1, thread); | |
e2e4d78b JK |
7593 | |
7594 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7595 | ||
7596 | gdb_assert (new_b->related_breakpoint == new_b); | |
7597 | if (retval == NULL) | |
7598 | retval = new_b; | |
7599 | new_b->related_breakpoint = retval; | |
7600 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7601 | retval = retval->related_breakpoint; | |
7602 | retval->related_breakpoint = new_b; | |
7603 | } | |
7604 | ||
7605 | return retval; | |
7606 | } | |
7607 | ||
7608 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7609 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7610 | stack. |
7611 | ||
b4b3e2de AB |
7612 | If the unwind fails then there is not sufficient information to discard |
7613 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7614 | be cleaned up next time this function is called from a location where | |
7615 | unwinding is possible. */ | |
e2e4d78b JK |
7616 | |
7617 | void | |
b67a2c6f | 7618 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7619 | { |
7620 | struct breakpoint *b, *b_tmp; | |
7621 | ||
7622 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7623 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7624 | { |
7625 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7626 | ||
b4b3e2de AB |
7627 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7628 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7629 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7630 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7631 | |
7632 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7633 | more to do. Or, if the dummy frame associated with the | |
7634 | bp_call_dummy is still on the stack then we need to leave this | |
7635 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7636 | if (dummy_b->type != bp_call_dummy |
7637 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7638 | continue; | |
b4b3e2de AB |
7639 | |
7640 | /* We didn't find the dummy frame on the stack, this could be | |
7641 | because we have longjmp'd to a stack frame that is previous to | |
7642 | the dummy frame, or it could be because the stack unwind is | |
7643 | broken at some point between the longjmp frame and the dummy | |
7644 | frame. | |
7645 | ||
7646 | Next we figure out why the stack unwind stopped. If it looks | |
7647 | like the unwind is complete then we assume the dummy frame has | |
7648 | been jumped over, however, if the unwind stopped for an | |
7649 | unexpected reason then we assume the stack unwind is currently | |
7650 | broken, and that we will (eventually) return to the dummy | |
7651 | frame. | |
7652 | ||
7653 | It might be tempting to consider using frame_id_inner here, but | |
7654 | that is not safe. There is no guarantee that the stack frames | |
7655 | we are looking at here are even on the same stack as the | |
7656 | original dummy frame, hence frame_id_inner can't be used. See | |
7657 | the comments on frame_id_inner for more details. */ | |
7658 | bool unwind_finished_unexpectedly = false; | |
bd2b40ac | 7659 | for (frame_info_ptr fi = get_current_frame (); fi != nullptr; ) |
b4b3e2de | 7660 | { |
bd2b40ac | 7661 | frame_info_ptr prev = get_prev_frame (fi); |
b4b3e2de AB |
7662 | if (prev == nullptr) |
7663 | { | |
7664 | /* FI is the last stack frame. Why did this frame not | |
7665 | unwind further? */ | |
7666 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7667 | if (stop_reason != UNWIND_NO_REASON | |
7668 | && stop_reason != UNWIND_OUTERMOST) | |
7669 | unwind_finished_unexpectedly = true; | |
7670 | } | |
7671 | fi = prev; | |
7672 | } | |
7673 | if (unwind_finished_unexpectedly) | |
7674 | continue; | |
7675 | ||
00431a78 | 7676 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7677 | |
7678 | while (b->related_breakpoint != b) | |
7679 | { | |
7680 | if (b_tmp == b->related_breakpoint) | |
7681 | b_tmp = b->related_breakpoint->next; | |
7682 | delete_breakpoint (b->related_breakpoint); | |
7683 | } | |
7684 | delete_breakpoint (b); | |
7685 | } | |
7686 | } | |
7687 | ||
1900040c MS |
7688 | void |
7689 | enable_overlay_breakpoints (void) | |
7690 | { | |
43892fdf | 7691 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7692 | if (b->type == bp_overlay_event) |
01add95b SM |
7693 | { |
7694 | b->enable_state = bp_enabled; | |
7695 | update_global_location_list (UGLL_MAY_INSERT); | |
7696 | overlay_events_enabled = 1; | |
7697 | } | |
1900040c MS |
7698 | } |
7699 | ||
7700 | void | |
7701 | disable_overlay_breakpoints (void) | |
7702 | { | |
43892fdf | 7703 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7704 | if (b->type == bp_overlay_event) |
01add95b SM |
7705 | { |
7706 | b->enable_state = bp_disabled; | |
7707 | update_global_location_list (UGLL_DONT_INSERT); | |
7708 | overlay_events_enabled = 0; | |
7709 | } | |
1900040c MS |
7710 | } |
7711 | ||
aa7d318d TT |
7712 | /* Set an active std::terminate breakpoint for each std::terminate |
7713 | master breakpoint. */ | |
7714 | void | |
7715 | set_std_terminate_breakpoint (void) | |
7716 | { | |
1428b37a | 7717 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7718 | if (b->pspace == current_program_space |
7719 | && b->type == bp_std_terminate_master) | |
7720 | { | |
7ab97995 PA |
7721 | momentary_breakpoint_from_master (b, bp_std_terminate, 1, |
7722 | inferior_thread ()->global_num); | |
aa7d318d TT |
7723 | } |
7724 | } | |
7725 | ||
7726 | /* Delete all the std::terminate breakpoints. */ | |
7727 | void | |
7728 | delete_std_terminate_breakpoint (void) | |
7729 | { | |
1428b37a | 7730 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7731 | if (b->type == bp_std_terminate) |
7732 | delete_breakpoint (b); | |
7733 | } | |
7734 | ||
c4093a6a | 7735 | struct breakpoint * |
a6d9a66e | 7736 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7737 | { |
7738 | struct breakpoint *b; | |
c4093a6a | 7739 | |
9efa3c7f | 7740 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
06edf0c0 | 7741 | |
b5de0fa7 | 7742 | b->enable_state = bp_enabled; |
264f9890 PA |
7743 | /* locspec has to be used or breakpoint_re_set will delete me. */ |
7744 | b->locspec = new_address_location_spec (b->loc->address, NULL, 0); | |
c4093a6a | 7745 | |
44702360 | 7746 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7747 | |
c4093a6a JM |
7748 | return b; |
7749 | } | |
7750 | ||
0101ce28 JJ |
7751 | struct lang_and_radix |
7752 | { | |
7753 | enum language lang; | |
7754 | int radix; | |
7755 | }; | |
7756 | ||
4efc6507 DE |
7757 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7758 | ||
7759 | struct breakpoint * | |
7760 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7761 | { | |
9efa3c7f | 7762 | return create_internal_breakpoint (gdbarch, address, bp_jit_event); |
4efc6507 | 7763 | } |
0101ce28 | 7764 | |
03673fc7 PP |
7765 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7766 | ||
7767 | void | |
7768 | remove_jit_event_breakpoints (void) | |
7769 | { | |
1428b37a | 7770 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7771 | if (b->type == bp_jit_event |
7772 | && b->loc->pspace == current_program_space) | |
7773 | delete_breakpoint (b); | |
7774 | } | |
7775 | ||
cae688ec JJ |
7776 | void |
7777 | remove_solib_event_breakpoints (void) | |
7778 | { | |
1428b37a | 7779 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7780 | if (b->type == bp_shlib_event |
7781 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7782 | delete_breakpoint (b); |
7783 | } | |
7784 | ||
f37f681c PA |
7785 | /* See breakpoint.h. */ |
7786 | ||
7787 | void | |
7788 | remove_solib_event_breakpoints_at_next_stop (void) | |
7789 | { | |
1428b37a | 7790 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7791 | if (b->type == bp_shlib_event |
7792 | && b->loc->pspace == current_program_space) | |
7793 | b->disposition = disp_del_at_next_stop; | |
7794 | } | |
7795 | ||
04086b45 PA |
7796 | /* Helper for create_solib_event_breakpoint / |
7797 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7798 | INSERT_MODE to pass through to update_global_location_list. */ | |
7799 | ||
7800 | static struct breakpoint * | |
7801 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7802 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7803 | { |
7804 | struct breakpoint *b; | |
7805 | ||
9efa3c7f | 7806 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
04086b45 | 7807 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7808 | return b; |
7809 | } | |
7810 | ||
04086b45 PA |
7811 | struct breakpoint * |
7812 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7813 | { | |
7814 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7815 | } | |
7816 | ||
f37f681c PA |
7817 | /* See breakpoint.h. */ |
7818 | ||
7819 | struct breakpoint * | |
7820 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7821 | { | |
7822 | struct breakpoint *b; | |
7823 | ||
04086b45 PA |
7824 | /* Explicitly tell update_global_location_list to insert |
7825 | locations. */ | |
7826 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7827 | if (!b->loc->inserted) |
7828 | { | |
7829 | delete_breakpoint (b); | |
7830 | return NULL; | |
7831 | } | |
7832 | return b; | |
7833 | } | |
7834 | ||
cae688ec JJ |
7835 | /* Disable any breakpoints that are on code in shared libraries. Only |
7836 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7837 | ||
7838 | void | |
cb851954 | 7839 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7840 | { |
48d7020b | 7841 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7842 | { |
7843 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7844 | struct breakpoint *b = loc->owner; | |
7845 | ||
7846 | /* We apply the check to all breakpoints, including disabled for | |
7847 | those with loc->duplicate set. This is so that when breakpoint | |
7848 | becomes enabled, or the duplicate is removed, gdb will try to | |
7849 | insert all breakpoints. If we don't set shlib_disabled here, | |
7850 | we'll try to insert those breakpoints and fail. */ | |
7851 | if (((b->type == bp_breakpoint) | |
7852 | || (b->type == bp_jit_event) | |
7853 | || (b->type == bp_hardware_breakpoint) | |
7854 | || (is_tracepoint (b))) | |
7855 | && loc->pspace == current_program_space | |
7856 | && !loc->shlib_disabled | |
7857 | && solib_name_from_address (loc->pspace, loc->address) | |
7858 | ) | |
7859 | { | |
7860 | loc->shlib_disabled = 1; | |
7861 | } | |
7862 | } | |
cae688ec JJ |
7863 | } |
7864 | ||
63644780 NB |
7865 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7866 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7867 | disabled ones can just stay disabled. */ | |
84acb35a | 7868 | |
75149521 | 7869 | static void |
84acb35a JJ |
7870 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7871 | { | |
d8de7963 | 7872 | bool disabled_shlib_breaks = false; |
84acb35a | 7873 | |
48d7020b | 7874 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7875 | { |
7876 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7877 | struct breakpoint *b = loc->owner; | |
7878 | ||
7879 | if (solib->pspace == loc->pspace | |
7880 | && !loc->shlib_disabled | |
7881 | && (((b->type == bp_breakpoint | |
7882 | || b->type == bp_jit_event | |
7883 | || b->type == bp_hardware_breakpoint) | |
7884 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7885 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7886 | || is_tracepoint (b)) | |
7887 | && solib_contains_address_p (solib, loc->address)) | |
7888 | { | |
7889 | loc->shlib_disabled = 1; | |
7890 | /* At this point, we cannot rely on remove_breakpoint | |
7891 | succeeding so we must mark the breakpoint as not inserted | |
7892 | to prevent future errors occurring in remove_breakpoints. */ | |
7893 | loc->inserted = 0; | |
7894 | ||
7895 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7896 | gdb::observers::breakpoint_modified.notify (b); | |
7897 | ||
7898 | if (!disabled_shlib_breaks) | |
7899 | { | |
7900 | target_terminal::ours_for_output (); | |
7901 | warning (_("Temporarily disabling breakpoints " | |
7902 | "for unloaded shared library \"%s\""), | |
7903 | solib->so_name); | |
7904 | } | |
d8de7963 | 7905 | disabled_shlib_breaks = true; |
01add95b SM |
7906 | } |
7907 | } | |
84acb35a JJ |
7908 | } |
7909 | ||
63644780 NB |
7910 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7911 | notification of free_objfile. Only apply to enabled breakpoints, | |
7912 | disabled ones can just stay disabled. */ | |
7913 | ||
7914 | static void | |
7915 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7916 | { | |
63644780 NB |
7917 | if (objfile == NULL) |
7918 | return; | |
7919 | ||
d03de421 PA |
7920 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7921 | managed by the user with add-symbol-file/remove-symbol-file. | |
7922 | Similarly to how breakpoints in shared libraries are handled in | |
7923 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7924 | shlib_disabled so they end up uninserted on the next global |
7925 | location list update. Shared libraries not loaded by the user | |
7926 | aren't handled here -- they're already handled in | |
7927 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7928 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7929 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7930 | main objfile). */ | |
7931 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7932 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7933 | return; |
7934 | ||
43892fdf | 7935 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7936 | { |
d8de7963 | 7937 | bool bp_modified = false; |
63644780 NB |
7938 | |
7939 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7940 | continue; | |
7941 | ||
40cb8ca5 | 7942 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7943 | { |
7944 | CORE_ADDR loc_addr = loc->address; | |
7945 | ||
7946 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7947 | && loc->loc_type != bp_loc_software_breakpoint) | |
7948 | continue; | |
7949 | ||
7950 | if (loc->shlib_disabled != 0) | |
7951 | continue; | |
7952 | ||
7953 | if (objfile->pspace != loc->pspace) | |
7954 | continue; | |
7955 | ||
7956 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7957 | && loc->loc_type != bp_loc_software_breakpoint) | |
7958 | continue; | |
7959 | ||
7960 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7961 | { | |
7962 | loc->shlib_disabled = 1; | |
08351840 PA |
7963 | /* At this point, we don't know whether the object was |
7964 | unmapped from the inferior or not, so leave the | |
7965 | inserted flag alone. We'll handle failure to | |
7966 | uninsert quietly, in case the object was indeed | |
7967 | unmapped. */ | |
63644780 NB |
7968 | |
7969 | mark_breakpoint_location_modified (loc); | |
7970 | ||
d8de7963 | 7971 | bp_modified = true; |
63644780 NB |
7972 | } |
7973 | } | |
7974 | ||
7975 | if (bp_modified) | |
76727919 | 7976 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7977 | } |
7978 | } | |
7979 | ||
b650a282 | 7980 | /* See breakpoint.h. */ |
ce78b96d | 7981 | |
92bb0228 PA |
7982 | breakpoint::breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
7983 | bool temp, const char *cond_string_) | |
7984 | : type (bptype), | |
7985 | disposition (temp ? disp_del : disp_donttouch), | |
7986 | gdbarch (gdbarch_), | |
7987 | language (current_language->la_language), | |
7988 | input_radix (::input_radix), | |
7989 | cond_string (cond_string_ != nullptr | |
7990 | ? make_unique_xstrdup (cond_string_) | |
7991 | : nullptr), | |
7992 | related_breakpoint (this) | |
7993 | { | |
7994 | } | |
7995 | ||
7996 | /* See breakpoint.h. */ | |
7997 | ||
fed1c982 | 7998 | catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, |
92bb0228 PA |
7999 | const char *cond_string) |
8000 | : breakpoint (gdbarch, bp_catchpoint, temp, cond_string) | |
c906108c | 8001 | { |
acd0955b | 8002 | add_dummy_location (this, current_program_space); |
c5aa993b | 8003 | |
acd0955b | 8004 | pspace = current_program_space; |
346774a9 PA |
8005 | } |
8006 | ||
b82d4ec9 | 8007 | breakpoint * |
b270e6f9 | 8008 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8009 | { |
b270e6f9 | 8010 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8011 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8012 | if (is_tracepoint (b)) |
8013 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8014 | if (!internal) |
8015 | mention (b); | |
76727919 | 8016 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8017 | |
8018 | if (update_gll) | |
44702360 | 8019 | update_global_location_list (UGLL_MAY_INSERT); |
b82d4ec9 PA |
8020 | |
8021 | return b; | |
c56053d2 PA |
8022 | } |
8023 | ||
c906108c | 8024 | static int |
fba45db2 | 8025 | hw_breakpoint_used_count (void) |
c906108c | 8026 | { |
c906108c SS |
8027 | int i = 0; |
8028 | ||
43892fdf | 8029 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 8030 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 8031 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
8032 | { |
8033 | /* Special types of hardware breakpoints may use more than | |
8034 | one register. */ | |
c47614fe | 8035 | i += b->resources_needed (bl); |
f1310107 | 8036 | } |
c906108c SS |
8037 | |
8038 | return i; | |
8039 | } | |
8040 | ||
a1398e0c PA |
8041 | /* Returns the resources B would use if it were a hardware |
8042 | watchpoint. */ | |
8043 | ||
c906108c | 8044 | static int |
a1398e0c | 8045 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8046 | { |
c906108c SS |
8047 | int i = 0; |
8048 | ||
a1398e0c PA |
8049 | if (!breakpoint_enabled (b)) |
8050 | return 0; | |
8051 | ||
40cb8ca5 | 8052 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
8053 | { |
8054 | /* Special types of hardware watchpoints may use more than | |
8055 | one register. */ | |
c47614fe | 8056 | i += b->resources_needed (bl); |
a1398e0c PA |
8057 | } |
8058 | ||
8059 | return i; | |
8060 | } | |
8061 | ||
8062 | /* Returns the sum the used resources of all hardware watchpoints of | |
8063 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8064 | the sum of the used resources of all hardware watchpoints of other | |
8065 | types _not_ TYPE. */ | |
8066 | ||
8067 | static int | |
8068 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8069 | enum bptype type, int *other_type_used) | |
8070 | { | |
8071 | int i = 0; | |
a1398e0c | 8072 | |
c906108c | 8073 | *other_type_used = 0; |
43892fdf | 8074 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 8075 | { |
a1398e0c PA |
8076 | if (b == except) |
8077 | continue; | |
e09342b5 TJB |
8078 | if (!breakpoint_enabled (b)) |
8079 | continue; | |
8080 | ||
a1398e0c PA |
8081 | if (b->type == type) |
8082 | i += hw_watchpoint_use_count (b); | |
8083 | else if (is_hardware_watchpoint (b)) | |
8084 | *other_type_used = 1; | |
e09342b5 TJB |
8085 | } |
8086 | ||
c906108c SS |
8087 | return i; |
8088 | } | |
8089 | ||
c906108c | 8090 | void |
fba45db2 | 8091 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8092 | { |
43892fdf | 8093 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8094 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8095 | { |
b5de0fa7 | 8096 | b->enable_state = bp_call_disabled; |
44702360 | 8097 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 8098 | } |
c906108c SS |
8099 | } |
8100 | ||
8101 | void | |
fba45db2 | 8102 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8103 | { |
43892fdf | 8104 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8105 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8106 | { |
b5de0fa7 | 8107 | b->enable_state = bp_enabled; |
44702360 | 8108 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 8109 | } |
c906108c SS |
8110 | } |
8111 | ||
8bea4e01 UW |
8112 | void |
8113 | disable_breakpoints_before_startup (void) | |
8114 | { | |
6c95b8df | 8115 | current_program_space->executing_startup = 1; |
44702360 | 8116 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8117 | } |
8118 | ||
8119 | void | |
8120 | enable_breakpoints_after_startup (void) | |
8121 | { | |
6c95b8df | 8122 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8123 | breakpoint_re_set (); |
8bea4e01 UW |
8124 | } |
8125 | ||
7a3e3265 PA |
8126 | /* Allocate a new momentary breakpoint. */ |
8127 | ||
7ab97995 | 8128 | template<typename... Arg> |
7a3e3265 | 8129 | static momentary_breakpoint * |
7ab97995 PA |
8130 | new_momentary_breakpoint (struct gdbarch *gdbarch, enum bptype type, |
8131 | Arg&&... args) | |
7a3e3265 PA |
8132 | { |
8133 | if (type == bp_longjmp || type == bp_exception) | |
7ab97995 PA |
8134 | return new longjmp_breakpoint (gdbarch, type, |
8135 | std::forward<Arg> (args)...); | |
7a3e3265 | 8136 | else |
7ab97995 PA |
8137 | return new momentary_breakpoint (gdbarch, type, |
8138 | std::forward<Arg> (args)...); | |
7a3e3265 PA |
8139 | } |
8140 | ||
7c16b83e PA |
8141 | /* Set a momentary breakpoint of type TYPE at address specified by |
8142 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8143 | frame. */ | |
c906108c | 8144 | |
454dafbd | 8145 | breakpoint_up |
a6d9a66e UW |
8146 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8147 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8148 | { |
193facb3 JK |
8149 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8150 | tail-called one. */ | |
8151 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8152 | |
7a3e3265 | 8153 | std::unique_ptr<momentary_breakpoint> b |
7ab97995 PA |
8154 | (new_momentary_breakpoint (gdbarch, type, sal.pspace, frame_id, |
8155 | inferior_thread ()->global_num)); | |
7a3e3265 PA |
8156 | |
8157 | b->add_location (sal); | |
c906108c | 8158 | |
7a3e3265 PA |
8159 | breakpoint_up bp (add_to_breakpoint_chain (std::move (b))); |
8160 | ||
44702360 | 8161 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8162 | |
7a3e3265 | 8163 | return bp; |
c906108c | 8164 | } |
611c83ae | 8165 | |
06edf0c0 | 8166 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8167 | The new breakpoint will have type TYPE, use OPS as its |
8168 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8169 | |
06edf0c0 PA |
8170 | static struct breakpoint * |
8171 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8172 | enum bptype type, | |
7ab97995 PA |
8173 | int loc_enabled, |
8174 | int thread) | |
e58b0e63 | 8175 | { |
7a3e3265 | 8176 | std::unique_ptr<breakpoint> copy |
7ab97995 PA |
8177 | (new_momentary_breakpoint (orig->gdbarch, type, orig->pspace, |
8178 | orig->frame_id, thread)); | |
ee89d0a4 | 8179 | copy->loc = copy->allocate_location (); |
0ba852ab | 8180 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8181 | |
a6d9a66e | 8182 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8183 | copy->loc->requested_address = orig->loc->requested_address; |
8184 | copy->loc->address = orig->loc->address; | |
8185 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8186 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8187 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8188 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8189 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8190 | copy->loc->enabled = loc_enabled; |
e58b0e63 | 8191 | |
7a3e3265 | 8192 | breakpoint *b = add_to_breakpoint_chain (std::move (copy)); |
44702360 | 8193 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
7a3e3265 | 8194 | return b; |
e58b0e63 PA |
8195 | } |
8196 | ||
06edf0c0 PA |
8197 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8198 | ORIG is NULL. */ | |
8199 | ||
8200 | struct breakpoint * | |
8201 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8202 | { | |
8203 | /* If there's nothing to clone, then return nothing. */ | |
8204 | if (orig == NULL) | |
8205 | return NULL; | |
8206 | ||
7ab97995 PA |
8207 | return momentary_breakpoint_from_master (orig, orig->type, 0, |
8208 | orig->thread); | |
06edf0c0 PA |
8209 | } |
8210 | ||
454dafbd | 8211 | breakpoint_up |
a6d9a66e UW |
8212 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8213 | enum bptype type) | |
611c83ae PA |
8214 | { |
8215 | struct symtab_and_line sal; | |
8216 | ||
8217 | sal = find_pc_line (pc, 0); | |
8218 | sal.pc = pc; | |
8219 | sal.section = find_pc_overlay (pc); | |
8220 | sal.explicit_pc = 1; | |
8221 | ||
a6d9a66e | 8222 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8223 | } |
c906108c | 8224 | \f |
c5aa993b | 8225 | |
c906108c SS |
8226 | /* Tell the user we have just set a breakpoint B. */ |
8227 | ||
8228 | static void | |
b713485d | 8229 | mention (const breakpoint *b) |
c906108c | 8230 | { |
c47614fe | 8231 | b->print_mention (); |
2d33446d | 8232 | current_uiout->text ("\n"); |
c906108c | 8233 | } |
c906108c | 8234 | \f |
c5aa993b | 8235 | |
5133a315 | 8236 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8237 | |
7f32a4d5 PA |
8238 | /* Handle "set breakpoint auto-hw on". |
8239 | ||
8240 | If the explicitly specified breakpoint type is not hardware | |
8241 | breakpoint, check the memory map to see whether the breakpoint | |
8242 | address is in read-only memory. | |
8243 | ||
8244 | - location type is not hardware breakpoint, memory is read-only. | |
8245 | We change the type of the location to hardware breakpoint. | |
8246 | ||
8247 | - location type is hardware breakpoint, memory is read-write. This | |
8248 | means we've previously made the location hardware one, but then the | |
8249 | memory map changed, so we undo. | |
8250 | */ | |
8251 | ||
8252 | static void | |
8253 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8254 | { | |
8255 | if (automatic_hardware_breakpoints | |
8256 | && bl->owner->type != bp_hardware_breakpoint | |
8257 | && (bl->loc_type == bp_loc_software_breakpoint | |
8258 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8259 | { | |
8260 | /* When breakpoints are removed, remove_breakpoints will use | |
8261 | location types we've just set here, the only possible problem | |
8262 | is that memory map has changed during running program, but | |
8263 | it's not going to work anyway with current gdb. */ | |
8264 | mem_region *mr = lookup_mem_region (bl->address); | |
8265 | ||
8266 | if (mr != nullptr) | |
8267 | { | |
8268 | enum bp_loc_type new_type; | |
8269 | ||
8270 | if (mr->attrib.mode != MEM_RW) | |
8271 | new_type = bp_loc_hardware_breakpoint; | |
8272 | else | |
8273 | new_type = bp_loc_software_breakpoint; | |
8274 | ||
8275 | if (new_type != bl->loc_type) | |
8276 | { | |
8277 | static bool said = false; | |
8278 | ||
8279 | bl->loc_type = new_type; | |
8280 | if (!said) | |
8281 | { | |
6cb06a8c TT |
8282 | gdb_printf (_("Note: automatically using " |
8283 | "hardware breakpoints for " | |
8284 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8285 | said = true; |
8286 | } | |
8287 | } | |
8288 | } | |
8289 | } | |
8290 | } | |
8291 | ||
06615628 | 8292 | bp_location * |
74421c0b | 8293 | code_breakpoint::add_location (const symtab_and_line &sal) |
0d381245 | 8294 | { |
06615628 | 8295 | struct bp_location *new_loc, **tmp; |
3742cc8b | 8296 | CORE_ADDR adjusted_address; |
06615628 | 8297 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
3742cc8b YQ |
8298 | |
8299 | if (loc_gdbarch == NULL) | |
06615628 | 8300 | loc_gdbarch = gdbarch; |
3742cc8b YQ |
8301 | |
8302 | /* Adjust the breakpoint's address prior to allocating a location. | |
ee89d0a4 | 8303 | Once we call allocate_location(), that mostly uninitialized |
3742cc8b YQ |
8304 | location will be placed on the location chain. Adjustment of the |
8305 | breakpoint may cause target_read_memory() to be called and we do | |
8306 | not want its scan of the location chain to find a breakpoint and | |
8307 | location that's only been partially initialized. */ | |
8308 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
60270718 AB |
8309 | sal.pc, type, |
8310 | sal.pspace); | |
0d381245 | 8311 | |
d30113d4 | 8312 | /* Sort the locations by their ADDRESS. */ |
06615628 PA |
8313 | new_loc = allocate_location (); |
8314 | for (tmp = &(loc); *tmp != NULL && (*tmp)->address <= adjusted_address; | |
d30113d4 | 8315 | tmp = &((*tmp)->next)) |
0d381245 | 8316 | ; |
06615628 PA |
8317 | new_loc->next = *tmp; |
8318 | *tmp = new_loc; | |
8319 | ||
8320 | new_loc->requested_address = sal.pc; | |
8321 | new_loc->address = adjusted_address; | |
8322 | new_loc->pspace = sal.pspace; | |
8323 | new_loc->probe.prob = sal.prob; | |
8324 | new_loc->probe.objfile = sal.objfile; | |
8325 | gdb_assert (new_loc->pspace != NULL); | |
8326 | new_loc->section = sal.section; | |
8327 | new_loc->gdbarch = loc_gdbarch; | |
8328 | new_loc->line_number = sal.line; | |
8329 | new_loc->symtab = sal.symtab; | |
8330 | new_loc->symbol = sal.symbol; | |
8331 | new_loc->msymbol = sal.msymbol; | |
8332 | new_loc->objfile = sal.objfile; | |
8333 | ||
8334 | set_breakpoint_location_function (new_loc); | |
1a853c52 | 8335 | |
6ae88661 LM |
8336 | /* While by definition, permanent breakpoints are already present in the |
8337 | code, we don't mark the location as inserted. Normally one would expect | |
8338 | that GDB could rely on that breakpoint instruction to stop the program, | |
8339 | thus removing the need to insert its own breakpoint, except that executing | |
8340 | the breakpoint instruction can kill the target instead of reporting a | |
8341 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8342 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8343 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8344 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8345 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8346 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8347 | it manually increments the PC, thus avoiding executing the breakpoint | |
8348 | instruction.) */ | |
06615628 PA |
8349 | if (bp_loc_is_permanent (new_loc)) |
8350 | new_loc->permanent = 1; | |
1a853c52 | 8351 | |
06615628 | 8352 | return new_loc; |
0d381245 | 8353 | } |
514f746b AR |
8354 | \f |
8355 | ||
5133a315 LM |
8356 | /* Return true if LOC is pointing to a permanent breakpoint, |
8357 | return false otherwise. */ | |
1cf4d951 | 8358 | |
5133a315 | 8359 | static bool |
1cf4d951 PA |
8360 | bp_loc_is_permanent (struct bp_location *loc) |
8361 | { | |
514f746b AR |
8362 | gdb_assert (loc != NULL); |
8363 | ||
cb1e4e32 PA |
8364 | /* If we have a non-breakpoint-backed catchpoint or a software |
8365 | watchpoint, just return 0. We should not attempt to read from | |
8366 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8367 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8368 | memory. */ |
cb1e4e32 | 8369 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8370 | return false; |
244558af | 8371 | |
5ed8105e | 8372 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8373 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8374 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8375 | } |
8376 | ||
e7e0cddf SS |
8377 | /* Build a command list for the dprintf corresponding to the current |
8378 | settings of the dprintf style options. */ | |
8379 | ||
8380 | static void | |
8381 | update_dprintf_command_list (struct breakpoint *b) | |
8382 | { | |
6f781ee3 | 8383 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8384 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8385 | |
8386 | if (!dprintf_args) | |
8387 | return; | |
8388 | ||
8389 | dprintf_args = skip_spaces (dprintf_args); | |
8390 | ||
8391 | /* Allow a comma, as it may have terminated a location, but don't | |
8392 | insist on it. */ | |
8393 | if (*dprintf_args == ',') | |
8394 | ++dprintf_args; | |
8395 | dprintf_args = skip_spaces (dprintf_args); | |
8396 | ||
8397 | if (*dprintf_args != '"') | |
8398 | error (_("Bad format string, missing '\"'.")); | |
8399 | ||
d3ce09f5 | 8400 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8401 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8402 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8403 | { |
e0700ba4 | 8404 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8405 | error (_("No function supplied for dprintf call")); |
8406 | ||
e0700ba4 | 8407 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8408 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8409 | dprintf_function.c_str (), |
8410 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8411 | dprintf_args); |
8412 | else | |
8413 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8414 | dprintf_function.c_str (), |
e7e0cddf SS |
8415 | dprintf_args); |
8416 | } | |
d3ce09f5 SS |
8417 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8418 | { | |
8419 | if (target_can_run_breakpoint_commands ()) | |
8420 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8421 | else | |
8422 | { | |
8423 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8424 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8425 | } | |
8426 | } | |
e7e0cddf | 8427 | else |
f34652de | 8428 | internal_error (_("Invalid dprintf style.")); |
e7e0cddf | 8429 | |
f28045c2 | 8430 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8431 | |
12973681 TT |
8432 | /* Manufacture a printf sequence. */ |
8433 | struct command_line *printf_cmd_line | |
8579fd13 | 8434 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8435 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8436 | command_lines_deleter ())); | |
e7e0cddf SS |
8437 | } |
8438 | ||
8439 | /* Update all dprintf commands, making their command lists reflect | |
8440 | current style settings. */ | |
8441 | ||
8442 | static void | |
eb4c3f4a | 8443 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8444 | struct cmd_list_element *c) |
8445 | { | |
43892fdf SM |
8446 | for (breakpoint *b : all_breakpoints ()) |
8447 | if (b->type == bp_dprintf) | |
e7e0cddf | 8448 | update_dprintf_command_list (b); |
e7e0cddf | 8449 | } |
c3f6f71d | 8450 | |
74421c0b | 8451 | code_breakpoint::code_breakpoint (struct gdbarch *gdbarch_, |
3b003a61 PA |
8452 | enum bptype type_, |
8453 | gdb::array_view<const symtab_and_line> sals, | |
264f9890 | 8454 | location_spec_up &&locspec_, |
3b003a61 PA |
8455 | gdb::unique_xmalloc_ptr<char> filter_, |
8456 | gdb::unique_xmalloc_ptr<char> cond_string_, | |
8457 | gdb::unique_xmalloc_ptr<char> extra_string_, | |
8458 | enum bpdisp disposition_, | |
8459 | int thread_, int task_, int ignore_count_, | |
8460 | int from_tty, | |
8461 | int enabled_, unsigned flags, | |
8462 | int display_canonical_) | |
8463 | : breakpoint (gdbarch_, type_) | |
018d34a4 | 8464 | { |
0d381245 | 8465 | int i; |
018d34a4 VP |
8466 | |
8467 | if (type == bp_hardware_breakpoint) | |
8468 | { | |
fbbd034e AS |
8469 | int target_resources_ok; |
8470 | ||
8471 | i = hw_breakpoint_used_count (); | |
8472 | target_resources_ok = | |
8473 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8474 | i + 1, 0); |
8475 | if (target_resources_ok == 0) | |
8476 | error (_("No hardware breakpoint support in the target.")); | |
8477 | else if (target_resources_ok < 0) | |
8478 | error (_("Hardware breakpoints used exceeds limit.")); | |
8479 | } | |
8480 | ||
6c5b2ebe | 8481 | gdb_assert (!sals.empty ()); |
6c95b8df | 8482 | |
0a9ccb9d | 8483 | /* At most one of thread or task can be set on any breakpoint. */ |
2ecee236 | 8484 | gdb_assert (thread == -1 || task == -1); |
3b003a61 PA |
8485 | thread = thread_; |
8486 | task = task_; | |
0d381245 | 8487 | |
3b003a61 PA |
8488 | cond_string = std::move (cond_string_); |
8489 | extra_string = std::move (extra_string_); | |
8490 | ignore_count = ignore_count_; | |
8491 | enable_state = enabled_ ? bp_enabled : bp_disabled; | |
8492 | disposition = disposition_; | |
5af949e3 | 8493 | |
3b003a61 PA |
8494 | if (type == bp_static_tracepoint |
8495 | || type == bp_static_marker_tracepoint) | |
8496 | { | |
98ed24fb | 8497 | auto *t = gdb::checked_static_cast<struct tracepoint *> (this); |
3b003a61 | 8498 | struct static_tracepoint_marker marker; |
0d381245 | 8499 | |
3b003a61 | 8500 | if (strace_marker_p (this)) |
0d381245 | 8501 | { |
3b003a61 PA |
8502 | /* We already know the marker exists, otherwise, we wouldn't |
8503 | see a sal for it. */ | |
709438c7 | 8504 | const char *p = &locspec_->to_string ()[3]; |
3b003a61 | 8505 | const char *endp; |
0fb4aa4b | 8506 | |
3b003a61 | 8507 | p = skip_spaces (p); |
0fb4aa4b | 8508 | |
3b003a61 | 8509 | endp = skip_to_space (p); |
0fb4aa4b | 8510 | |
3b003a61 | 8511 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8512 | |
3b003a61 PA |
8513 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8514 | t->static_trace_marker_id.c_str ()); | |
8515 | } | |
8516 | else if (target_static_tracepoint_marker_at (sals[0].pc, &marker)) | |
8517 | { | |
8518 | t->static_trace_marker_id = std::move (marker.str_id); | |
0fb4aa4b | 8519 | |
3b003a61 PA |
8520 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8521 | t->static_trace_marker_id.c_str ()); | |
0d381245 VP |
8522 | } |
8523 | else | |
3b003a61 PA |
8524 | warning (_("Couldn't determine the static tracepoint marker to probe")); |
8525 | } | |
8526 | ||
8527 | for (const auto &sal : sals) | |
8528 | { | |
8529 | if (from_tty) | |
018d34a4 | 8530 | { |
3b003a61 PA |
8531 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8532 | if (loc_gdbarch == nullptr) | |
8533 | loc_gdbarch = gdbarch; | |
8534 | ||
8535 | describe_other_breakpoints (loc_gdbarch, | |
8536 | sal.pspace, sal.pc, sal.section, thread); | |
0d381245 VP |
8537 | } |
8538 | ||
3b003a61 PA |
8539 | bp_location *new_loc = add_location (sal); |
8540 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) | |
8541 | new_loc->inserted = 1; | |
8542 | ||
b5fa468f TBA |
8543 | /* Do not set breakpoint locations conditions yet. As locations |
8544 | are inserted, they get sorted based on their addresses. Let | |
8545 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8546 | |
8547 | /* Dynamic printf requires and uses additional arguments on the | |
8548 | command line, otherwise it's an error. */ | |
8549 | if (type == bp_dprintf) | |
8550 | { | |
3b003a61 PA |
8551 | if (extra_string != nullptr) |
8552 | update_dprintf_command_list (this); | |
e7e0cddf SS |
8553 | else |
8554 | error (_("Format string required")); | |
8555 | } | |
3b003a61 PA |
8556 | else if (extra_string != nullptr) |
8557 | error (_("Garbage '%s' at end of command"), extra_string.get ()); | |
855a6e68 | 8558 | } |
018d34a4 | 8559 | |
b5fa468f TBA |
8560 | /* The order of the locations is now stable. Set the location |
8561 | condition using the location's number. */ | |
8562 | int loc_num = 1; | |
3b003a61 | 8563 | for (bp_location *bl : locations ()) |
b5fa468f | 8564 | { |
3b003a61 PA |
8565 | if (cond_string != nullptr) |
8566 | set_breakpoint_location_condition (cond_string.get (), bl, | |
8567 | number, loc_num); | |
b5fa468f TBA |
8568 | |
8569 | ++loc_num; | |
8570 | } | |
8571 | ||
3b003a61 | 8572 | display_canonical = display_canonical_; |
264f9890 PA |
8573 | if (locspec_ != nullptr) |
8574 | locspec = std::move (locspec_); | |
018d34a4 | 8575 | else |
264f9890 | 8576 | locspec = new_address_location_spec (this->loc->address, NULL, 0); |
3b003a61 | 8577 | filter = std::move (filter_); |
d9b3f62e | 8578 | } |
018d34a4 | 8579 | |
d9b3f62e PA |
8580 | static void |
8581 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8582 | gdb::array_view<const symtab_and_line> sals, |
264f9890 | 8583 | location_spec_up &&locspec, |
e1e01040 PA |
8584 | gdb::unique_xmalloc_ptr<char> filter, |
8585 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8586 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8587 | enum bptype type, enum bpdisp disposition, |
8588 | int thread, int task, int ignore_count, | |
ef4848c7 | 8589 | int from_tty, |
44f238bb PA |
8590 | int enabled, int internal, unsigned flags, |
8591 | int display_canonical) | |
d9b3f62e | 8592 | { |
74421c0b | 8593 | std::unique_ptr<code_breakpoint> b |
3b003a61 PA |
8594 | = new_breakpoint_from_type (gdbarch, |
8595 | type, | |
8596 | sals, | |
264f9890 | 8597 | std::move (locspec), |
3b003a61 PA |
8598 | std::move (filter), |
8599 | std::move (cond_string), | |
8600 | std::move (extra_string), | |
8601 | disposition, | |
8602 | thread, task, ignore_count, | |
8603 | from_tty, | |
8604 | enabled, flags, | |
8605 | display_canonical); | |
d9b3f62e | 8606 | |
b270e6f9 | 8607 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8608 | } |
8609 | ||
8610 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8611 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8612 | value. COND_STRING, if not NULL, specified the condition to be | |
8613 | used for all breakpoints. Essentially the only case where | |
8614 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8615 | function. In that case, it's still not possible to specify | |
8616 | separate conditions for different overloaded functions, so | |
8617 | we take just a single condition string. | |
8618 | ||
c3f6f71d | 8619 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8620 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8621 | array contents). If the function fails (error() is called), the |
8622 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8623 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8624 | |
8625 | static void | |
8cdf0e15 | 8626 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8627 | struct linespec_result *canonical, |
e1e01040 PA |
8628 | gdb::unique_xmalloc_ptr<char> cond_string, |
8629 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8630 | enum bptype type, enum bpdisp disposition, |
8631 | int thread, int task, int ignore_count, | |
ef4848c7 | 8632 | int from_tty, |
44f238bb | 8633 | int enabled, int internal, unsigned flags) |
c906108c | 8634 | { |
f8eba3c6 | 8635 | if (canonical->pre_expanded) |
6c5b2ebe | 8636 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8637 | |
6c5b2ebe | 8638 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8639 | { |
f00aae0f | 8640 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8641 | 'break', without arguments. */ |
264f9890 | 8642 | location_spec_up locspec |
5c1ddcb6 PA |
8643 | = (canonical->locspec != nullptr |
8644 | ? canonical->locspec->clone () | |
8645 | : nullptr); | |
e1e01040 | 8646 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8647 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8648 | |
6c5b2ebe | 8649 | create_breakpoint_sal (gdbarch, lsal.sals, |
264f9890 | 8650 | std::move (locspec), |
e1e01040 PA |
8651 | std::move (filter_string), |
8652 | std::move (cond_string), | |
8653 | std::move (extra_string), | |
e7e0cddf | 8654 | type, disposition, |
ef4848c7 | 8655 | thread, task, ignore_count, |
44f238bb | 8656 | from_tty, enabled, internal, flags, |
56435ebe | 8657 | canonical->special_display); |
c3f6f71d | 8658 | } |
c3f6f71d | 8659 | } |
c906108c | 8660 | |
264f9890 | 8661 | /* Parse LOCSPEC which is assumed to be a SAL specification possibly |
c3f6f71d | 8662 | followed by conditionals. On return, SALS contains an array of SAL |
264f9890 PA |
8663 | addresses found. LOCSPEC points to the end of the SAL (for |
8664 | linespec locspecs). | |
9998af43 TJB |
8665 | |
8666 | The array and the line spec strings are allocated on the heap, it is | |
8667 | the caller's responsibility to free them. */ | |
c906108c | 8668 | |
b9362cc7 | 8669 | static void |
264f9890 | 8670 | parse_breakpoint_sals (location_spec *locspec, |
58438ac1 | 8671 | struct linespec_result *canonical) |
c3f6f71d | 8672 | { |
f00aae0f KS |
8673 | struct symtab_and_line cursal; |
8674 | ||
7464aeaa | 8675 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
f00aae0f | 8676 | { |
40d97ee2 | 8677 | const char *spec = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 8678 | |
a20714ff | 8679 | if (spec == NULL) |
f00aae0f KS |
8680 | { |
8681 | /* The last displayed codepoint, if it's valid, is our default | |
8682 | breakpoint address. */ | |
8683 | if (last_displayed_sal_is_valid ()) | |
8684 | { | |
f00aae0f KS |
8685 | /* Set sal's pspace, pc, symtab, and line to the values |
8686 | corresponding to the last call to print_frame_info. | |
8687 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8688 | as the breakpoint line number is inappropriate otherwise. | |
8689 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8690 | symtab_and_line sal = get_last_displayed_sal (); |
8691 | CORE_ADDR pc = sal.pc; | |
8692 | ||
f00aae0f KS |
8693 | sal = find_pc_line (pc, 0); |
8694 | ||
8695 | /* "break" without arguments is equivalent to "break *PC" | |
8696 | where PC is the last displayed codepoint's address. So | |
8697 | make sure to set sal.explicit_pc to prevent GDB from | |
8698 | trying to expand the list of sals to include all other | |
8699 | instances with the same symtab and line. */ | |
8700 | sal.pc = pc; | |
8701 | sal.explicit_pc = 1; | |
8702 | ||
6c5b2ebe PA |
8703 | struct linespec_sals lsal; |
8704 | lsal.sals = {sal}; | |
f00aae0f KS |
8705 | lsal.canonical = NULL; |
8706 | ||
6c5b2ebe | 8707 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8708 | return; |
8709 | } | |
8710 | else | |
8711 | error (_("No default breakpoint address now.")); | |
c906108c | 8712 | } |
c906108c | 8713 | } |
f00aae0f KS |
8714 | |
8715 | /* Force almost all breakpoints to be in terms of the | |
8716 | current_source_symtab (which is decode_line_1's default). | |
8717 | This should produce the results we want almost all of the | |
8718 | time while leaving default_breakpoint_* alone. | |
8719 | ||
8720 | ObjC: However, don't match an Objective-C method name which | |
8721 | may have a '+' or '-' succeeded by a '['. */ | |
8722 | cursal = get_current_source_symtab_and_line (); | |
8723 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8724 | { |
a20714ff | 8725 | const char *spec = NULL; |
cc80f267 | 8726 | |
7464aeaa | 8727 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
40d97ee2 | 8728 | spec = as_linespec_location_spec (locspec)->spec_string; |
cc80f267 | 8729 | |
f00aae0f | 8730 | if (!cursal.symtab |
a20714ff PA |
8731 | || (spec != NULL |
8732 | && strchr ("+-", spec[0]) != NULL | |
8733 | && spec[1] != '[')) | |
f00aae0f | 8734 | { |
264f9890 | 8735 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8736 | get_last_displayed_symtab (), |
8737 | get_last_displayed_line (), | |
8738 | canonical, NULL, NULL); | |
8739 | return; | |
8740 | } | |
c906108c | 8741 | } |
f00aae0f | 8742 | |
264f9890 | 8743 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8744 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8745 | } |
c906108c | 8746 | |
c906108c | 8747 | |
c3f6f71d | 8748 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8749 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8750 | |
b9362cc7 | 8751 | static void |
6c5b2ebe | 8752 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8753 | { |
6c5b2ebe PA |
8754 | for (auto &sal : sals) |
8755 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8756 | } |
8757 | ||
7a697b8d SS |
8758 | /* Fast tracepoints may have restrictions on valid locations. For |
8759 | instance, a fast tracepoint using a jump instead of a trap will | |
8760 | likely have to overwrite more bytes than a trap would, and so can | |
8761 | only be placed where the instruction is longer than the jump, or a | |
8762 | multi-instruction sequence does not have a jump into the middle of | |
8763 | it, etc. */ | |
8764 | ||
8765 | static void | |
8766 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8767 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8768 | { |
6c5b2ebe | 8769 | for (const auto &sal : sals) |
7a697b8d | 8770 | { |
f8eba3c6 TT |
8771 | struct gdbarch *sarch; |
8772 | ||
6c5b2ebe | 8773 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8774 | /* We fall back to GDBARCH if there is no architecture |
8775 | associated with SAL. */ | |
8776 | if (sarch == NULL) | |
8777 | sarch = gdbarch; | |
281d762b TT |
8778 | std::string msg; |
8779 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8780 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8781 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8782 | } |
8783 | } | |
8784 | ||
018d34a4 VP |
8785 | /* Given TOK, a string specification of condition and thread, as |
8786 | accepted by the 'break' command, extract the condition | |
8787 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8788 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8789 | If no condition is found, *COND_STRING is set to NULL. |
8790 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8791 | |
8792 | static void | |
bbc13ae3 | 8793 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8794 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8795 | int *thread, int *task, | |
8796 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8797 | { |
6f781ee3 | 8798 | cond_string->reset (); |
018d34a4 | 8799 | *thread = -1; |
2ecee236 | 8800 | *task = -1; |
6f781ee3 | 8801 | rest->reset (); |
733d554a | 8802 | bool force = false; |
ed1d1739 | 8803 | |
018d34a4 VP |
8804 | while (tok && *tok) |
8805 | { | |
bbc13ae3 | 8806 | const char *end_tok; |
018d34a4 | 8807 | int toklen; |
bbc13ae3 KS |
8808 | const char *cond_start = NULL; |
8809 | const char *cond_end = NULL; | |
cc59ec59 | 8810 | |
f1735a53 | 8811 | tok = skip_spaces (tok); |
e7e0cddf SS |
8812 | |
8813 | if ((*tok == '"' || *tok == ',') && rest) | |
8814 | { | |
6f781ee3 | 8815 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8816 | return; |
8817 | } | |
8818 | ||
f1735a53 | 8819 | end_tok = skip_to_space (tok); |
d634f2de | 8820 | |
018d34a4 | 8821 | toklen = end_tok - tok; |
d634f2de | 8822 | |
018d34a4 VP |
8823 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8824 | { | |
8825 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8826 | try |
8827 | { | |
8828 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8829 | } | |
8830 | catch (const gdb_exception_error &) | |
8831 | { | |
8832 | if (!force) | |
8833 | throw; | |
8834 | else | |
8835 | tok = tok + strlen (tok); | |
8836 | } | |
018d34a4 | 8837 | cond_end = tok; |
6f781ee3 | 8838 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8839 | } |
733d554a TBA |
8840 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8841 | { | |
5759831a | 8842 | tok = tok + toklen; |
733d554a TBA |
8843 | force = true; |
8844 | } | |
018d34a4 VP |
8845 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8846 | { | |
5d5658a1 PA |
8847 | const char *tmptok; |
8848 | struct thread_info *thr; | |
d634f2de | 8849 | |
980dbf36 AB |
8850 | if (*thread != -1) |
8851 | error(_("You can specify only one thread.")); | |
8852 | ||
2ecee236 | 8853 | if (*task != -1) |
0a9ccb9d AB |
8854 | error (_("You can specify only one of thread or task.")); |
8855 | ||
018d34a4 | 8856 | tok = end_tok + 1; |
5d5658a1 | 8857 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8858 | if (tok == tmptok) |
8859 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8860 | *thread = thr->global_num; |
bbc13ae3 | 8861 | tok = tmptok; |
018d34a4 | 8862 | } |
4a306c9a JB |
8863 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8864 | { | |
8865 | char *tmptok; | |
8866 | ||
2ecee236 | 8867 | if (*task != -1) |
980dbf36 AB |
8868 | error(_("You can specify only one task.")); |
8869 | ||
0a9ccb9d AB |
8870 | if (*thread != -1) |
8871 | error (_("You can specify only one of thread or task.")); | |
8872 | ||
4a306c9a | 8873 | tok = end_tok + 1; |
bbc13ae3 | 8874 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8875 | if (tok == tmptok) |
8876 | error (_("Junk after task keyword.")); | |
8877 | if (!valid_task_id (*task)) | |
b6199126 | 8878 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8879 | tok = tmptok; |
4a306c9a | 8880 | } |
e7e0cddf SS |
8881 | else if (rest) |
8882 | { | |
6f781ee3 | 8883 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8884 | return; |
e7e0cddf | 8885 | } |
018d34a4 VP |
8886 | else |
8887 | error (_("Junk at end of arguments.")); | |
8888 | } | |
8889 | } | |
8890 | ||
b5fa468f TBA |
8891 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8892 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8893 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8894 | for the description of these parameters and INPUT. */ | |
8895 | ||
8896 | static void | |
8897 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8898 | const char *input, |
8899 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8900 | int *thread, int *task, | |
8901 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8902 | { |
8903 | int num_failures = 0; | |
8904 | for (auto &sal : sals) | |
8905 | { | |
6f781ee3 | 8906 | gdb::unique_xmalloc_ptr<char> cond; |
0a9ccb9d | 8907 | int thread_id = -1; |
2ecee236 | 8908 | int task_id = -1; |
6f781ee3 | 8909 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8910 | |
8911 | /* Here we want to parse 'arg' to separate condition from thread | |
8912 | number. But because parsing happens in a context and the | |
8913 | contexts of sals might be different, try each until there is | |
8914 | success. Finding one successful parse is sufficient for our | |
8915 | goal. When setting the breakpoint we'll re-parse the | |
8916 | condition in the context of each sal. */ | |
8917 | try | |
8918 | { | |
8919 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8920 | &task_id, &remaining); | |
6f781ee3 | 8921 | *cond_string = std::move (cond); |
0a9ccb9d | 8922 | /* At most one of thread or task can be set. */ |
2ecee236 | 8923 | gdb_assert (thread_id == -1 || task_id == -1); |
b5fa468f TBA |
8924 | *thread = thread_id; |
8925 | *task = task_id; | |
6f781ee3 | 8926 | *rest = std::move (remaining); |
b5fa468f TBA |
8927 | break; |
8928 | } | |
8929 | catch (const gdb_exception_error &e) | |
8930 | { | |
8931 | num_failures++; | |
8932 | /* If no sal remains, do not continue. */ | |
8933 | if (num_failures == sals.size ()) | |
8934 | throw; | |
8935 | } | |
8936 | } | |
8937 | } | |
8938 | ||
0fb4aa4b PA |
8939 | /* Decode a static tracepoint marker spec. */ |
8940 | ||
6c5b2ebe | 8941 | static std::vector<symtab_and_line> |
f00aae0f | 8942 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8943 | { |
f00aae0f KS |
8944 | const char *p = &(*arg_p)[3]; |
8945 | const char *endp; | |
0fb4aa4b | 8946 | |
f1735a53 | 8947 | p = skip_spaces (p); |
0fb4aa4b | 8948 | |
f1735a53 | 8949 | endp = skip_to_space (p); |
0fb4aa4b | 8950 | |
81b1e71c | 8951 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8952 | |
5d9310c4 SM |
8953 | std::vector<static_tracepoint_marker> markers |
8954 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8955 | if (markers.empty ()) | |
81b1e71c TT |
8956 | error (_("No known static tracepoint marker named %s"), |
8957 | marker_str.c_str ()); | |
0fb4aa4b | 8958 | |
6c5b2ebe | 8959 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8960 | sals.reserve (markers.size ()); |
0fb4aa4b | 8961 | |
5d9310c4 | 8962 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8963 | { |
5d9310c4 SM |
8964 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8965 | sal.pc = marker.address; | |
6c5b2ebe | 8966 | sals.push_back (sal); |
5d9310c4 | 8967 | } |
0fb4aa4b | 8968 | |
0fb4aa4b PA |
8969 | *arg_p = endp; |
8970 | return sals; | |
8971 | } | |
8972 | ||
bac7c5cf GB |
8973 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8974 | according to IS_TRACEPOINT. */ | |
8975 | ||
8976 | static const struct breakpoint_ops * | |
264f9890 PA |
8977 | breakpoint_ops_for_location_spec_type (enum location_spec_type locspec_type, |
8978 | bool is_tracepoint) | |
bac7c5cf GB |
8979 | { |
8980 | if (is_tracepoint) | |
8981 | { | |
264f9890 | 8982 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8983 | return &tracepoint_probe_breakpoint_ops; |
8984 | else | |
74421c0b | 8985 | return &code_breakpoint_ops; |
bac7c5cf GB |
8986 | } |
8987 | else | |
8988 | { | |
264f9890 | 8989 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8990 | return &bkpt_probe_breakpoint_ops; |
8991 | else | |
74421c0b | 8992 | return &code_breakpoint_ops; |
bac7c5cf GB |
8993 | } |
8994 | } | |
8995 | ||
8996 | /* See breakpoint.h. */ | |
8997 | ||
8998 | const struct breakpoint_ops * | |
264f9890 PA |
8999 | breakpoint_ops_for_location_spec (const location_spec *locspec, |
9000 | bool is_tracepoint) | |
bac7c5cf | 9001 | { |
264f9890 PA |
9002 | if (locspec != nullptr) |
9003 | return (breakpoint_ops_for_location_spec_type | |
7464aeaa | 9004 | (locspec->type (), is_tracepoint)); |
74421c0b | 9005 | return &code_breakpoint_ops; |
bac7c5cf GB |
9006 | } |
9007 | ||
f00aae0f | 9008 | /* See breakpoint.h. */ |
0101ce28 | 9009 | |
8cdf0e15 VP |
9010 | int |
9011 | create_breakpoint (struct gdbarch *gdbarch, | |
264f9890 | 9012 | location_spec *locspec, |
e1e01040 PA |
9013 | const char *cond_string, |
9014 | int thread, const char *extra_string, | |
10a636cc | 9015 | bool force_condition, int parse_extra, |
0fb4aa4b | 9016 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9017 | int ignore_count, |
9018 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9019 | const struct breakpoint_ops *ops, |
44f238bb PA |
9020 | int from_tty, int enabled, int internal, |
9021 | unsigned flags) | |
c3f6f71d | 9022 | { |
7efd8fc2 | 9023 | struct linespec_result canonical; |
d8de7963 | 9024 | bool pending = false; |
2ecee236 | 9025 | int task = -1; |
86b17b60 | 9026 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9027 | |
348d480f PA |
9028 | gdb_assert (ops != NULL); |
9029 | ||
f00aae0f KS |
9030 | /* If extra_string isn't useful, set it to NULL. */ |
9031 | if (extra_string != NULL && *extra_string == '\0') | |
9032 | extra_string = NULL; | |
9033 | ||
a70b8144 | 9034 | try |
b78a6381 | 9035 | { |
264f9890 | 9036 | ops->create_sals_from_location_spec (locspec, &canonical); |
b78a6381 | 9037 | } |
230d2906 | 9038 | catch (const gdb_exception_error &e) |
0101ce28 | 9039 | { |
492d29ea PA |
9040 | /* If caller is interested in rc value from parse, set |
9041 | value. */ | |
9042 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9043 | { |
05ff989b AC |
9044 | /* If pending breakpoint support is turned off, throw |
9045 | error. */ | |
fa8d40ab JJ |
9046 | |
9047 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9048 | throw; |
723a2275 VP |
9049 | |
9050 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9051 | |
dda83cd7 | 9052 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9053 | selects no, then simply return the error code. */ |
059fb39f | 9054 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9055 | && !nquery (_("Make %s pending on future shared library load? "), |
9056 | bptype_string (type_wanted))) | |
fd9b8c24 | 9057 | return 0; |
fa8d40ab | 9058 | |
05ff989b AC |
9059 | /* At this point, either the user was queried about setting |
9060 | a pending breakpoint and selected yes, or pending | |
9061 | breakpoint behavior is on and thus a pending breakpoint | |
9062 | is defaulted on behalf of the user. */ | |
d8de7963 | 9063 | pending = true; |
0101ce28 | 9064 | } |
492d29ea | 9065 | else |
eedc3f4f | 9066 | throw; |
0101ce28 | 9067 | } |
492d29ea | 9068 | |
6c5b2ebe | 9069 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9070 | return 0; |
c3f6f71d | 9071 | |
c3f6f71d JM |
9072 | /* Resolve all line numbers to PC's and verify that the addresses |
9073 | are ok for the target. */ | |
0101ce28 | 9074 | if (!pending) |
f8eba3c6 | 9075 | { |
6c5b2ebe PA |
9076 | for (auto &lsal : canonical.lsals) |
9077 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9078 | } |
c3f6f71d | 9079 | |
7a697b8d | 9080 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9081 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9082 | { |
6c5b2ebe PA |
9083 | for (const auto &lsal : canonical.lsals) |
9084 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9085 | } |
7a697b8d | 9086 | |
c3f6f71d JM |
9087 | /* Verify that condition can be parsed, before setting any |
9088 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9089 | breakpoint. */ |
0101ce28 | 9090 | if (!pending) |
c3f6f71d | 9091 | { |
e1e01040 PA |
9092 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9093 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9094 | ||
f00aae0f | 9095 | if (parse_extra) |
dda83cd7 | 9096 | { |
6f781ee3 TT |
9097 | gdb::unique_xmalloc_ptr<char> rest; |
9098 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 9099 | |
6c5b2ebe | 9100 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9101 | |
b5fa468f TBA |
9102 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9103 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
9104 | cond_string_copy = std::move (cond); |
9105 | extra_string_copy = std::move (rest); | |
dda83cd7 | 9106 | } |
2f069f6f | 9107 | else |
dda83cd7 | 9108 | { |
f00aae0f KS |
9109 | if (type_wanted != bp_dprintf |
9110 | && extra_string != NULL && *extra_string != '\0') | |
9111 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 9112 | |
10a636cc TBA |
9113 | /* Check the validity of the condition. We should error out |
9114 | if the condition is invalid at all of the locations and | |
9115 | if it is not forced. In the PARSE_EXTRA case above, this | |
9116 | check is done when parsing the EXTRA_STRING. */ | |
9117 | if (cond_string != nullptr && !force_condition) | |
9118 | { | |
9119 | int num_failures = 0; | |
9120 | const linespec_sals &lsal = canonical.lsals[0]; | |
9121 | for (const auto &sal : lsal.sals) | |
9122 | { | |
9123 | const char *cond = cond_string; | |
9124 | try | |
9125 | { | |
9126 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
9127 | /* One success is sufficient to keep going. */ | |
9128 | break; | |
9129 | } | |
9130 | catch (const gdb_exception_error &) | |
9131 | { | |
9132 | num_failures++; | |
9133 | /* If this is the last sal, error out. */ | |
9134 | if (num_failures == lsal.sals.size ()) | |
9135 | throw; | |
9136 | } | |
9137 | } | |
9138 | } | |
9139 | ||
0878d0fa YQ |
9140 | /* Create a private copy of condition string. */ |
9141 | if (cond_string) | |
e1e01040 | 9142 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9143 | /* Create a private copy of any extra string. */ |
9144 | if (extra_string) | |
e1e01040 | 9145 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9146 | } |
0fb4aa4b | 9147 | |
52d361e1 | 9148 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9149 | std::move (cond_string_copy), |
9150 | std::move (extra_string_copy), | |
9151 | type_wanted, | |
d9b3f62e | 9152 | tempflag ? disp_del : disp_donttouch, |
ef4848c7 | 9153 | thread, task, ignore_count, |
44f238bb | 9154 | from_tty, enabled, internal, flags); |
c906108c | 9155 | } |
0101ce28 JJ |
9156 | else |
9157 | { | |
73063f51 TT |
9158 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (gdbarch, |
9159 | type_wanted); | |
5c1ddcb6 | 9160 | b->locspec = locspec->clone (); |
bfccc43c | 9161 | |
f00aae0f KS |
9162 | if (parse_extra) |
9163 | b->cond_string = NULL; | |
e12c7713 MK |
9164 | else |
9165 | { | |
9166 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
9167 | b->cond_string.reset (cond_string != NULL |
9168 | ? xstrdup (cond_string) | |
9169 | : NULL); | |
15630549 | 9170 | b->thread = thread; |
e12c7713 | 9171 | } |
f00aae0f KS |
9172 | |
9173 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
9174 | b->extra_string.reset (extra_string != NULL |
9175 | ? xstrdup (extra_string) | |
9176 | : NULL); | |
0101ce28 | 9177 | b->ignore_count = ignore_count; |
0101ce28 | 9178 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9179 | b->condition_not_parsed = 1; |
41447f92 | 9180 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9181 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9182 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9183 | b->pspace = current_program_space; |
8bea4e01 | 9184 | |
b270e6f9 | 9185 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9186 | } |
9187 | ||
6c5b2ebe | 9188 | if (canonical.lsals.size () > 1) |
95a42b64 | 9189 | { |
3e43a32a MS |
9190 | warning (_("Multiple breakpoints were set.\nUse the " |
9191 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9192 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9193 | } |
9194 | ||
44702360 | 9195 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9196 | |
9197 | return 1; | |
c3f6f71d | 9198 | } |
c906108c | 9199 | |
348d480f | 9200 | /* Set a breakpoint. |
72b2ff0e VP |
9201 | ARG is a string describing breakpoint address, |
9202 | condition, and thread. | |
9203 | FLAG specifies if a breakpoint is hardware on, | |
9204 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9205 | and BP_TEMPFLAG. */ | |
348d480f | 9206 | |
98deb0da | 9207 | static void |
f2fc3015 | 9208 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9209 | { |
72b2ff0e | 9210 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9211 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9212 | ? bp_hardware_breakpoint | |
9213 | : bp_breakpoint); | |
f00aae0f | 9214 | |
264f9890 PA |
9215 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
9216 | const struct breakpoint_ops *ops | |
9217 | = breakpoint_ops_for_location_spec (locspec.get (), | |
9218 | false /* is_tracepoint */); | |
c3f6f71d | 9219 | |
8cdf0e15 | 9220 | create_breakpoint (get_current_arch (), |
264f9890 | 9221 | locspec.get (), |
10a636cc | 9222 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9223 | tempflag, type_wanted, |
8cdf0e15 VP |
9224 | 0 /* Ignore count */, |
9225 | pending_break_support, | |
55aa24fb | 9226 | ops, |
8cdf0e15 | 9227 | from_tty, |
84f4c1fe | 9228 | 1 /* enabled */, |
44f238bb PA |
9229 | 0 /* internal */, |
9230 | 0); | |
c906108c SS |
9231 | } |
9232 | ||
c906108c SS |
9233 | /* Helper function for break_command_1 and disassemble_command. */ |
9234 | ||
9235 | void | |
fba45db2 | 9236 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9237 | { |
9238 | CORE_ADDR pc; | |
9239 | ||
9240 | if (sal->pc == 0 && sal->symtab != NULL) | |
9241 | { | |
9242 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9243 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9244 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9245 | sal->pc = pc; |
6a048695 | 9246 | |
4a64f543 | 9247 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9248 | number, then skip the function prologue if necessary. */ |
6a048695 | 9249 | if (sal->explicit_line) |
059acae7 | 9250 | skip_prologue_sal (sal); |
c906108c SS |
9251 | } |
9252 | ||
9253 | if (sal->section == 0 && sal->symtab != NULL) | |
9254 | { | |
346d1dfe | 9255 | const struct blockvector *bv; |
3977b71f | 9256 | const struct block *b; |
c5aa993b | 9257 | struct symbol *sym; |
c906108c | 9258 | |
43f3e411 | 9259 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9260 | sal->symtab->compunit ()); |
c906108c SS |
9261 | if (bv != NULL) |
9262 | { | |
3c9d0506 | 9263 | sym = b->linkage_function (); |
c906108c | 9264 | if (sym != NULL) |
dae58e04 TT |
9265 | sal->section |
9266 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9267 | else |
9268 | { | |
4a64f543 | 9269 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9270 | just have to look harder. This case can be executed |
9271 | if we have line numbers but no functions (as can | |
9272 | happen in assembly source). */ | |
c906108c | 9273 | |
5ed8105e | 9274 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9275 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9276 | |
5ed8105e | 9277 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9278 | if (msym.minsym) |
1db66e34 | 9279 | sal->section = msym.obj_section (); |
c906108c SS |
9280 | } |
9281 | } | |
9282 | } | |
9283 | } | |
9284 | ||
9285 | void | |
0b39b52e | 9286 | break_command (const char *arg, int from_tty) |
c906108c | 9287 | { |
db107f19 | 9288 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9289 | } |
9290 | ||
c906108c | 9291 | void |
0b39b52e | 9292 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9293 | { |
db107f19 | 9294 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9295 | } |
9296 | ||
c906108c | 9297 | static void |
0b39b52e | 9298 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9299 | { |
db107f19 | 9300 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9301 | } |
9302 | ||
9303 | static void | |
0b39b52e | 9304 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9305 | { |
db107f19 | 9306 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9307 | } |
9308 | ||
e7e0cddf SS |
9309 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9310 | with a prewired command list consisting of a single output command, | |
9311 | built from extra arguments supplied on the dprintf command | |
9312 | line. */ | |
9313 | ||
da821c7b | 9314 | static void |
0b39b52e | 9315 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9316 | { |
264f9890 | 9317 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f KS |
9318 | |
9319 | /* If non-NULL, ARG should have been advanced past the location; | |
9320 | the next character must be ','. */ | |
9321 | if (arg != NULL) | |
9322 | { | |
9323 | if (arg[0] != ',' || arg[1] == '\0') | |
9324 | error (_("Format string required")); | |
9325 | else | |
9326 | { | |
9327 | /* Skip the comma. */ | |
9328 | ++arg; | |
9329 | } | |
9330 | } | |
9331 | ||
e7e0cddf | 9332 | create_breakpoint (get_current_arch (), |
264f9890 | 9333 | locspec.get (), |
10a636cc | 9334 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9335 | 0, bp_dprintf, |
9336 | 0 /* Ignore count */, | |
9337 | pending_break_support, | |
74421c0b | 9338 | &code_breakpoint_ops, |
e7e0cddf SS |
9339 | from_tty, |
9340 | 1 /* enabled */, | |
9341 | 0 /* internal */, | |
9342 | 0); | |
9343 | } | |
9344 | ||
d3ce09f5 | 9345 | static void |
0b39b52e | 9346 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9347 | { |
9348 | error (_("May only run agent-printf on the target")); | |
9349 | } | |
9350 | ||
ec45bb67 | 9351 | /* Implement the "breakpoint_hit" method for ranged breakpoints. */ |
f1310107 | 9352 | |
ec45bb67 TT |
9353 | int |
9354 | ranged_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
9355 | const address_space *aspace, | |
9356 | CORE_ADDR bp_addr, | |
9357 | const target_waitstatus &ws) | |
f1310107 | 9358 | { |
c272a98c SM |
9359 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9360 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9361 | return 0; |
9362 | ||
f1310107 TJB |
9363 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9364 | bl->length, aspace, bp_addr); | |
9365 | } | |
9366 | ||
ec45bb67 | 9367 | /* Implement the "resources_needed" method for ranged breakpoints. */ |
f1310107 | 9368 | |
ec45bb67 TT |
9369 | int |
9370 | ranged_breakpoint::resources_needed (const struct bp_location *bl) | |
f1310107 TJB |
9371 | { |
9372 | return target_ranged_break_num_registers (); | |
9373 | } | |
9374 | ||
ec45bb67 | 9375 | /* Implement the "print_it" method for ranged breakpoints. */ |
f1310107 | 9376 | |
ec45bb67 | 9377 | enum print_stop_action |
7bd86313 | 9378 | ranged_breakpoint::print_it (const bpstat *bs) const |
f1310107 | 9379 | { |
ec45bb67 | 9380 | struct bp_location *bl = loc; |
79a45e25 | 9381 | struct ui_out *uiout = current_uiout; |
f1310107 | 9382 | |
ec45bb67 | 9383 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 TJB |
9384 | |
9385 | /* Ranged breakpoints have only one location. */ | |
9386 | gdb_assert (bl && bl->next == NULL); | |
9387 | ||
ec45bb67 | 9388 | annotate_breakpoint (number); |
f303dbd6 PA |
9389 | |
9390 | maybe_print_thread_hit_breakpoint (uiout); | |
9391 | ||
ec45bb67 | 9392 | if (disposition == disp_del) |
112e8700 | 9393 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9394 | else |
112e8700 SM |
9395 | uiout->text ("Ranged breakpoint "); |
9396 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9397 | { |
112e8700 | 9398 | uiout->field_string ("reason", |
f1310107 | 9399 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
ec45bb67 | 9400 | uiout->field_string ("disp", bpdisp_text (disposition)); |
f1310107 | 9401 | } |
78805ff8 | 9402 | print_num_locno (bs, uiout); |
112e8700 | 9403 | uiout->text (", "); |
f1310107 TJB |
9404 | |
9405 | return PRINT_SRC_AND_LOC; | |
9406 | } | |
9407 | ||
ec45bb67 | 9408 | /* Implement the "print_one" method for ranged breakpoints. */ |
f1310107 | 9409 | |
ec45bb67 | 9410 | bool |
a67bcaba | 9411 | ranged_breakpoint::print_one (bp_location **last_loc) const |
f1310107 | 9412 | { |
ec45bb67 | 9413 | struct bp_location *bl = loc; |
f1310107 | 9414 | struct value_print_options opts; |
79a45e25 | 9415 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9416 | |
9417 | /* Ranged breakpoints have only one location. */ | |
9418 | gdb_assert (bl && bl->next == NULL); | |
9419 | ||
9420 | get_user_print_options (&opts); | |
9421 | ||
9422 | if (opts.addressprint) | |
9423 | /* We don't print the address range here, it will be printed later | |
f7968895 | 9424 | by ranged_breakpoint::print_one_detail. */ |
112e8700 | 9425 | uiout->field_skip ("addr"); |
f1310107 | 9426 | annotate_field (5); |
ec45bb67 | 9427 | print_breakpoint_location (this, bl); |
f1310107 | 9428 | *last_loc = bl; |
c01e038b TT |
9429 | |
9430 | return true; | |
f1310107 TJB |
9431 | } |
9432 | ||
ec45bb67 | 9433 | /* Implement the "print_one_detail" method for ranged breakpoints. */ |
f1310107 | 9434 | |
ec45bb67 TT |
9435 | void |
9436 | ranged_breakpoint::print_one_detail (struct ui_out *uiout) const | |
f1310107 TJB |
9437 | { |
9438 | CORE_ADDR address_start, address_end; | |
ec45bb67 | 9439 | struct bp_location *bl = loc; |
d7e74731 | 9440 | string_file stb; |
f1310107 TJB |
9441 | |
9442 | gdb_assert (bl); | |
9443 | ||
9444 | address_start = bl->address; | |
9445 | address_end = address_start + bl->length - 1; | |
9446 | ||
112e8700 | 9447 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9448 | stb.printf ("[%s, %s]", |
9449 | print_core_address (bl->gdbarch, address_start), | |
9450 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9451 | uiout->field_stream ("addr", stb); |
9452 | uiout->text ("\n"); | |
f1310107 TJB |
9453 | } |
9454 | ||
ec45bb67 | 9455 | /* Implement the "print_mention" method for ranged breakpoints. */ |
f1310107 | 9456 | |
ec45bb67 | 9457 | void |
b713485d | 9458 | ranged_breakpoint::print_mention () const |
f1310107 | 9459 | { |
ec45bb67 | 9460 | struct bp_location *bl = loc; |
79a45e25 | 9461 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9462 | |
9463 | gdb_assert (bl); | |
ec45bb67 | 9464 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 | 9465 | |
2d33446d | 9466 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
ec45bb67 | 9467 | number, paddress (bl->gdbarch, bl->address), |
2d33446d | 9468 | paddress (bl->gdbarch, bl->address + bl->length - 1)); |
f1310107 TJB |
9469 | } |
9470 | ||
ec45bb67 | 9471 | /* Implement the "print_recreate" method for ranged breakpoints. */ |
f1310107 | 9472 | |
ec45bb67 | 9473 | void |
4d1ae558 | 9474 | ranged_breakpoint::print_recreate (struct ui_file *fp) const |
f1310107 | 9475 | { |
6cb06a8c | 9476 | gdb_printf (fp, "break-range %s, %s", |
709438c7 PA |
9477 | locspec->to_string (), |
9478 | locspec_range_end->to_string ()); | |
04d0163c | 9479 | print_recreate_thread (fp); |
f1310107 TJB |
9480 | } |
9481 | ||
f1310107 TJB |
9482 | /* Find the address where the end of the breakpoint range should be |
9483 | placed, given the SAL of the end of the range. This is so that if | |
9484 | the user provides a line number, the end of the range is set to the | |
9485 | last instruction of the given line. */ | |
9486 | ||
9487 | static CORE_ADDR | |
9488 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9489 | { | |
9490 | CORE_ADDR end; | |
9491 | ||
9492 | /* If the user provided a PC value, use it. Otherwise, | |
9493 | find the address of the end of the given location. */ | |
9494 | if (sal.explicit_pc) | |
9495 | end = sal.pc; | |
9496 | else | |
9497 | { | |
9498 | int ret; | |
9499 | CORE_ADDR start; | |
9500 | ||
9501 | ret = find_line_pc_range (sal, &start, &end); | |
9502 | if (!ret) | |
9503 | error (_("Could not find location of the end of the range.")); | |
9504 | ||
9505 | /* find_line_pc_range returns the start of the next line. */ | |
9506 | end--; | |
9507 | } | |
9508 | ||
9509 | return end; | |
9510 | } | |
9511 | ||
9512 | /* Implement the "break-range" CLI command. */ | |
9513 | ||
9514 | static void | |
0b39b52e | 9515 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9516 | { |
f2fc3015 | 9517 | const char *arg_start; |
f1310107 TJB |
9518 | struct linespec_result canonical_start, canonical_end; |
9519 | int bp_count, can_use_bp, length; | |
9520 | CORE_ADDR end; | |
f1310107 TJB |
9521 | |
9522 | /* We don't support software ranged breakpoints. */ | |
9523 | if (target_ranged_break_num_registers () < 0) | |
9524 | error (_("This target does not support hardware ranged breakpoints.")); | |
9525 | ||
9526 | bp_count = hw_breakpoint_used_count (); | |
9527 | bp_count += target_ranged_break_num_registers (); | |
9528 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9529 | bp_count, 0); | |
9530 | if (can_use_bp < 0) | |
9531 | error (_("Hardware breakpoints used exceeds limit.")); | |
9532 | ||
f8eba3c6 | 9533 | arg = skip_spaces (arg); |
f1310107 TJB |
9534 | if (arg == NULL || arg[0] == '\0') |
9535 | error(_("No address range specified.")); | |
9536 | ||
f8eba3c6 | 9537 | arg_start = arg; |
264f9890 PA |
9538 | location_spec_up start_locspec |
9539 | = string_to_location_spec (&arg, current_language); | |
9540 | parse_breakpoint_sals (start_locspec.get (), &canonical_start); | |
f1310107 TJB |
9541 | |
9542 | if (arg[0] != ',') | |
9543 | error (_("Too few arguments.")); | |
6c5b2ebe | 9544 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9545 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9546 | |
6c5b2ebe | 9547 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9548 | |
6c5b2ebe PA |
9549 | if (canonical_start.lsals.size () > 1 |
9550 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9551 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9552 | ||
6c5b2ebe | 9553 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9554 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9555 | |
9556 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9557 | arg = skip_spaces (arg); |
f1310107 | 9558 | |
264f9890 | 9559 | /* Parse the end location specification. */ |
f1310107 | 9560 | |
f1310107 TJB |
9561 | arg_start = arg; |
9562 | ||
f8eba3c6 | 9563 | /* We call decode_line_full directly here instead of using |
264f9890 PA |
9564 | parse_breakpoint_sals because we need to specify the start |
9565 | location spec's symtab and line as the default symtab and line | |
9566 | for the end of the range. This makes it possible to have ranges | |
9567 | like "foo.c:27, +14", where +14 means 14 lines from the start | |
9568 | location spec. */ | |
9569 | location_spec_up end_locspec | |
9570 | = string_to_location_spec (&arg, current_language); | |
9571 | decode_line_full (end_locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9572 | sal_start.symtab, sal_start.line, |
9573 | &canonical_end, NULL, NULL); | |
9574 | ||
6c5b2ebe | 9575 | if (canonical_end.lsals.empty ()) |
f1310107 | 9576 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9577 | |
6c5b2ebe PA |
9578 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9579 | if (canonical_end.lsals.size () > 1 | |
9580 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9581 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9582 | ||
6c5b2ebe | 9583 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9584 | |
9585 | end = find_breakpoint_range_end (sal_end); | |
9586 | if (sal_start.pc > end) | |
177b42fe | 9587 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9588 | |
9589 | length = end - sal_start.pc + 1; | |
9590 | if (length < 0) | |
9591 | /* Length overflowed. */ | |
9592 | error (_("Address range too large.")); | |
9593 | else if (length == 1) | |
9594 | { | |
9595 | /* This range is simple enough to be handled by | |
9596 | the `hbreak' command. */ | |
81b1e71c | 9597 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9598 | |
9599 | return; | |
9600 | } | |
9601 | ||
b925bf21 PA |
9602 | /* Now set up the breakpoint and install it. */ |
9603 | ||
9604 | std::unique_ptr<breakpoint> br | |
9605 | (new ranged_breakpoint (get_current_arch (), | |
9606 | sal_start, length, | |
264f9890 PA |
9607 | std::move (start_locspec), |
9608 | std::move (end_locspec))); | |
f1310107 | 9609 | |
27a62b43 | 9610 | install_breakpoint (false, std::move (br), true); |
f1310107 TJB |
9611 | } |
9612 | ||
4a64f543 MS |
9613 | /* Return non-zero if EXP is verified as constant. Returned zero |
9614 | means EXP is variable. Also the constant detection may fail for | |
9615 | some constant expressions and in such case still falsely return | |
9616 | zero. */ | |
2e6e3d9c | 9617 | |
dab72643 | 9618 | static bool |
65d79d4b SDJ |
9619 | watchpoint_exp_is_const (const struct expression *exp) |
9620 | { | |
1eaebe02 | 9621 | return exp->op->constant_p (); |
65d79d4b SDJ |
9622 | } |
9623 | ||
3a292923 | 9624 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9625 | |
3a292923 TT |
9626 | void |
9627 | watchpoint::re_set () | |
348d480f PA |
9628 | { |
9629 | /* Watchpoint can be either on expression using entirely global | |
9630 | variables, or it can be on local variables. | |
9631 | ||
9632 | Watchpoints of the first kind are never auto-deleted, and even | |
9633 | persist across program restarts. Since they can use variables | |
9634 | from shared libraries, we need to reparse expression as libraries | |
9635 | are loaded and unloaded. | |
9636 | ||
9637 | Watchpoints on local variables can also change meaning as result | |
9638 | of solib event. For example, if a watchpoint uses both a local | |
9639 | and a global variables in expression, it's a local watchpoint, | |
9640 | but unloading of a shared library will make the expression | |
9641 | invalid. This is not a very common use case, but we still | |
9642 | re-evaluate expression, to avoid surprises to the user. | |
9643 | ||
9644 | Note that for local watchpoints, we re-evaluate it only if | |
9645 | watchpoints frame id is still valid. If it's not, it means the | |
9646 | watchpoint is out of scope and will be deleted soon. In fact, | |
9647 | I'm not sure we'll ever be called in this case. | |
9648 | ||
9649 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9650 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9651 | |
3a5c3e22 PA |
9652 | Don't do anything about disabled watchpoints, since they will be |
9653 | reevaluated again when enabled. */ | |
d8de7963 | 9654 | update_watchpoint (this, true /* reparse */); |
348d480f PA |
9655 | } |
9656 | ||
3a292923 | 9657 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9658 | |
3a292923 TT |
9659 | int |
9660 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9661 | { |
3a292923 | 9662 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9663 | |
9664 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9665 | cond_exp.get ()); |
77b06cd7 TJB |
9666 | } |
9667 | ||
3a292923 | 9668 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9669 | |
3a292923 TT |
9670 | int |
9671 | watchpoint::remove_location (struct bp_location *bl, | |
9672 | enum remove_bp_reason reason) | |
77b06cd7 | 9673 | { |
3a292923 | 9674 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9675 | |
9676 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9677 | cond_exp.get ()); |
e09342b5 TJB |
9678 | } |
9679 | ||
3a292923 TT |
9680 | int |
9681 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9682 | const address_space *aspace, CORE_ADDR bp_addr, | |
9683 | const target_waitstatus &ws) | |
e09342b5 | 9684 | { |
348d480f | 9685 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9686 | |
348d480f PA |
9687 | /* Continuable hardware watchpoints are treated as non-existent if the |
9688 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9689 | some data address). Otherwise gdb won't stop on a break instruction | |
9690 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9691 | been defined. Also skip watchpoints which we know did not trigger | |
9692 | (did not match the data address). */ | |
9693 | if (is_hardware_watchpoint (b) | |
3a292923 | 9694 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9695 | return 0; |
9c06b0b4 | 9696 | |
348d480f | 9697 | return 1; |
9c06b0b4 TJB |
9698 | } |
9699 | ||
3a292923 TT |
9700 | void |
9701 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9702 | { |
348d480f | 9703 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9704 | |
348d480f | 9705 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9706 | } |
9707 | ||
3a292923 TT |
9708 | /* Implement the "resources_needed" method for hardware |
9709 | watchpoints. */ | |
9c06b0b4 | 9710 | |
3a292923 TT |
9711 | int |
9712 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9713 | { |
3a292923 | 9714 | int length = exact? 1 : bl->length; |
348d480f PA |
9715 | |
9716 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9717 | } |
9718 | ||
3a292923 TT |
9719 | /* Implement the "works_in_software_mode" method for hardware |
9720 | watchpoints. */ | |
9c06b0b4 | 9721 | |
5a61e176 | 9722 | bool |
3a292923 | 9723 | watchpoint::works_in_software_mode () const |
9c06b0b4 | 9724 | { |
efa80663 | 9725 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9726 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9727 | } |
9728 | ||
3a292923 | 9729 | enum print_stop_action |
7bd86313 | 9730 | watchpoint::print_it (const bpstat *bs) const |
9c06b0b4 | 9731 | { |
348d480f | 9732 | struct breakpoint *b; |
348d480f | 9733 | enum print_stop_action result; |
79a45e25 | 9734 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9735 | |
9736 | gdb_assert (bs->bp_location_at != NULL); | |
9737 | ||
348d480f PA |
9738 | b = bs->breakpoint_at; |
9739 | ||
f303dbd6 PA |
9740 | annotate_watchpoint (b->number); |
9741 | maybe_print_thread_hit_breakpoint (uiout); | |
9742 | ||
d7e74731 PA |
9743 | string_file stb; |
9744 | ||
76f9c9cf | 9745 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9746 | switch (b->type) |
9747 | { | |
348d480f | 9748 | case bp_watchpoint: |
9c06b0b4 | 9749 | case bp_hardware_watchpoint: |
112e8700 SM |
9750 | if (uiout->is_mi_like_p ()) |
9751 | uiout->field_string | |
9752 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9753 | mention (b); |
76f9c9cf | 9754 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9755 | uiout->text ("\nOld value = "); |
850645cf | 9756 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9757 | uiout->field_stream ("old", stb); |
9758 | uiout->text ("\nNew value = "); | |
3a292923 | 9759 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9760 | uiout->field_stream ("new", stb); |
9761 | uiout->text ("\n"); | |
348d480f PA |
9762 | /* More than one watchpoint may have been triggered. */ |
9763 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9764 | break; |
9765 | ||
9766 | case bp_read_watchpoint: | |
112e8700 SM |
9767 | if (uiout->is_mi_like_p ()) |
9768 | uiout->field_string | |
9769 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9770 | mention (b); |
76f9c9cf | 9771 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9772 | uiout->text ("\nValue = "); |
3a292923 | 9773 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9774 | uiout->field_stream ("value", stb); |
9775 | uiout->text ("\n"); | |
348d480f | 9776 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9777 | break; |
9778 | ||
9779 | case bp_access_watchpoint: | |
348d480f PA |
9780 | if (bs->old_val != NULL) |
9781 | { | |
112e8700 SM |
9782 | if (uiout->is_mi_like_p ()) |
9783 | uiout->field_string | |
9784 | ("reason", | |
348d480f PA |
9785 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9786 | mention (b); | |
76f9c9cf | 9787 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9788 | uiout->text ("\nOld value = "); |
850645cf | 9789 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9790 | uiout->field_stream ("old", stb); |
9791 | uiout->text ("\nNew value = "); | |
348d480f PA |
9792 | } |
9793 | else | |
9794 | { | |
9795 | mention (b); | |
112e8700 SM |
9796 | if (uiout->is_mi_like_p ()) |
9797 | uiout->field_string | |
9798 | ("reason", | |
348d480f | 9799 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9800 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9801 | uiout->text ("\nValue = "); |
348d480f | 9802 | } |
3a292923 | 9803 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9804 | uiout->field_stream ("new", stb); |
9805 | uiout->text ("\n"); | |
348d480f | 9806 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9807 | break; |
9808 | default: | |
348d480f | 9809 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9810 | } |
9811 | ||
348d480f PA |
9812 | return result; |
9813 | } | |
9814 | ||
3a292923 | 9815 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9816 | |
3a292923 | 9817 | void |
b713485d | 9818 | watchpoint::print_mention () const |
348d480f | 9819 | { |
79a45e25 | 9820 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9821 | const char *tuple_name; |
348d480f | 9822 | |
3a292923 | 9823 | switch (type) |
348d480f PA |
9824 | { |
9825 | case bp_watchpoint: | |
112e8700 | 9826 | uiout->text ("Watchpoint "); |
46b9c129 | 9827 | tuple_name = "wpt"; |
348d480f PA |
9828 | break; |
9829 | case bp_hardware_watchpoint: | |
112e8700 | 9830 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9831 | tuple_name = "wpt"; |
348d480f PA |
9832 | break; |
9833 | case bp_read_watchpoint: | |
112e8700 | 9834 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9835 | tuple_name = "hw-rwpt"; |
348d480f PA |
9836 | break; |
9837 | case bp_access_watchpoint: | |
112e8700 | 9838 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9839 | tuple_name = "hw-awpt"; |
348d480f PA |
9840 | break; |
9841 | default: | |
f34652de | 9842 | internal_error (_("Invalid hardware watchpoint type.")); |
348d480f PA |
9843 | } |
9844 | ||
46b9c129 | 9845 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9846 | uiout->field_signed ("number", number); |
112e8700 | 9847 | uiout->text (": "); |
3a292923 | 9848 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9849 | } |
9850 | ||
3a292923 | 9851 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9852 | |
3a292923 | 9853 | void |
4d1ae558 | 9854 | watchpoint::print_recreate (struct ui_file *fp) const |
348d480f | 9855 | { |
3a292923 | 9856 | switch (type) |
348d480f PA |
9857 | { |
9858 | case bp_watchpoint: | |
9859 | case bp_hardware_watchpoint: | |
6cb06a8c | 9860 | gdb_printf (fp, "watch"); |
348d480f PA |
9861 | break; |
9862 | case bp_read_watchpoint: | |
6cb06a8c | 9863 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9864 | break; |
9865 | case bp_access_watchpoint: | |
6cb06a8c | 9866 | gdb_printf (fp, "awatch"); |
348d480f PA |
9867 | break; |
9868 | default: | |
f34652de | 9869 | internal_error (_("Invalid watchpoint type.")); |
348d480f PA |
9870 | } |
9871 | ||
3a292923 | 9872 | gdb_printf (fp, " %s", exp_string.get ()); |
04d0163c | 9873 | print_recreate_thread (fp); |
348d480f PA |
9874 | } |
9875 | ||
3a292923 | 9876 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9877 | |
a6860f3a | 9878 | bool |
3a292923 | 9879 | watchpoint::explains_signal (enum gdb_signal sig) |
427cd150 TT |
9880 | { |
9881 | /* A software watchpoint cannot cause a signal other than | |
9882 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9883 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
a6860f3a | 9884 | return false; |
427cd150 | 9885 | |
a6860f3a | 9886 | return true; |
427cd150 TT |
9887 | } |
9888 | ||
3a292923 TT |
9889 | struct masked_watchpoint : public watchpoint |
9890 | { | |
73063f51 TT |
9891 | using watchpoint::watchpoint; |
9892 | ||
3a292923 TT |
9893 | int insert_location (struct bp_location *) override; |
9894 | int remove_location (struct bp_location *, | |
9895 | enum remove_bp_reason reason) override; | |
9896 | int resources_needed (const struct bp_location *) override; | |
5a61e176 | 9897 | bool works_in_software_mode () const override; |
7bd86313 | 9898 | enum print_stop_action print_it (const bpstat *bs) const override; |
3a292923 | 9899 | void print_one_detail (struct ui_out *) const override; |
b713485d | 9900 | void print_mention () const override; |
4d1ae558 | 9901 | void print_recreate (struct ui_file *fp) const override; |
3a292923 | 9902 | }; |
348d480f | 9903 | |
3a292923 | 9904 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9905 | |
3a292923 TT |
9906 | int |
9907 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9908 | { |
3a292923 | 9909 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9910 | bl->watchpoint_type); |
9911 | } | |
9912 | ||
3a292923 | 9913 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9914 | |
3a292923 TT |
9915 | int |
9916 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9917 | enum remove_bp_reason reason) | |
348d480f | 9918 | { |
3a292923 | 9919 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9920 | bl->watchpoint_type); |
348d480f PA |
9921 | } |
9922 | ||
3a292923 TT |
9923 | /* Implement the "resources_needed" method for masked hardware |
9924 | watchpoints. */ | |
348d480f | 9925 | |
3a292923 TT |
9926 | int |
9927 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9928 | { |
3a292923 | 9929 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9930 | } |
9931 | ||
3a292923 TT |
9932 | /* Implement the "works_in_software_mode" method for masked hardware |
9933 | watchpoints. */ | |
348d480f | 9934 | |
5a61e176 | 9935 | bool |
3a292923 | 9936 | masked_watchpoint::works_in_software_mode () const |
348d480f | 9937 | { |
5a61e176 | 9938 | return false; |
348d480f PA |
9939 | } |
9940 | ||
3a292923 TT |
9941 | /* Implement the "print_it" method for masked hardware |
9942 | watchpoints. */ | |
348d480f | 9943 | |
3a292923 | 9944 | enum print_stop_action |
7bd86313 | 9945 | masked_watchpoint::print_it (const bpstat *bs) const |
348d480f PA |
9946 | { |
9947 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9948 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9949 | |
9950 | /* Masked watchpoints have only one location. */ | |
9951 | gdb_assert (b->loc && b->loc->next == NULL); | |
9952 | ||
f303dbd6 PA |
9953 | annotate_watchpoint (b->number); |
9954 | maybe_print_thread_hit_breakpoint (uiout); | |
9955 | ||
348d480f PA |
9956 | switch (b->type) |
9957 | { | |
9958 | case bp_hardware_watchpoint: | |
112e8700 SM |
9959 | if (uiout->is_mi_like_p ()) |
9960 | uiout->field_string | |
9961 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9962 | break; |
9963 | ||
9964 | case bp_read_watchpoint: | |
112e8700 SM |
9965 | if (uiout->is_mi_like_p ()) |
9966 | uiout->field_string | |
9967 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9968 | break; |
9969 | ||
9970 | case bp_access_watchpoint: | |
112e8700 SM |
9971 | if (uiout->is_mi_like_p ()) |
9972 | uiout->field_string | |
9973 | ("reason", | |
348d480f PA |
9974 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9975 | break; | |
9976 | default: | |
f34652de | 9977 | internal_error (_("Invalid hardware watchpoint type.")); |
348d480f PA |
9978 | } |
9979 | ||
9980 | mention (b); | |
112e8700 | 9981 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9982 | Check the underlying instruction at PC for the memory\n\ |
9983 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9984 | uiout->text ("\n"); |
9c06b0b4 TJB |
9985 | |
9986 | /* More than one watchpoint may have been triggered. */ | |
9987 | return PRINT_UNKNOWN; | |
9988 | } | |
9989 | ||
3a292923 TT |
9990 | /* Implement the "print_one_detail" method for masked hardware |
9991 | watchpoints. */ | |
9c06b0b4 | 9992 | |
3a292923 TT |
9993 | void |
9994 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9995 | { |
9996 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9997 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9998 | |
112e8700 | 9999 | uiout->text ("\tmask "); |
3a292923 | 10000 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 10001 | uiout->text ("\n"); |
9c06b0b4 TJB |
10002 | } |
10003 | ||
3a292923 TT |
10004 | /* Implement the "print_mention" method for masked hardware |
10005 | watchpoints. */ | |
9c06b0b4 | 10006 | |
3a292923 | 10007 | void |
b713485d | 10008 | masked_watchpoint::print_mention () const |
9c06b0b4 | 10009 | { |
79a45e25 | 10010 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10011 | const char *tuple_name; |
9c06b0b4 | 10012 | |
3a292923 | 10013 | switch (type) |
9c06b0b4 TJB |
10014 | { |
10015 | case bp_hardware_watchpoint: | |
112e8700 | 10016 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10017 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10018 | break; |
10019 | case bp_read_watchpoint: | |
112e8700 | 10020 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10021 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10022 | break; |
10023 | case bp_access_watchpoint: | |
112e8700 | 10024 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10025 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10026 | break; |
10027 | default: | |
f34652de | 10028 | internal_error (_("Invalid hardware watchpoint type.")); |
9c06b0b4 TJB |
10029 | } |
10030 | ||
46b9c129 | 10031 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 10032 | uiout->field_signed ("number", number); |
112e8700 | 10033 | uiout->text (": "); |
3a292923 | 10034 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
10035 | } |
10036 | ||
3a292923 TT |
10037 | /* Implement the "print_recreate" method for masked hardware |
10038 | watchpoints. */ | |
9c06b0b4 | 10039 | |
3a292923 | 10040 | void |
4d1ae558 | 10041 | masked_watchpoint::print_recreate (struct ui_file *fp) const |
9c06b0b4 | 10042 | { |
3a292923 | 10043 | switch (type) |
9c06b0b4 TJB |
10044 | { |
10045 | case bp_hardware_watchpoint: | |
6cb06a8c | 10046 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
10047 | break; |
10048 | case bp_read_watchpoint: | |
6cb06a8c | 10049 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
10050 | break; |
10051 | case bp_access_watchpoint: | |
6cb06a8c | 10052 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
10053 | break; |
10054 | default: | |
f34652de | 10055 | internal_error (_("Invalid hardware watchpoint type.")); |
9c06b0b4 TJB |
10056 | } |
10057 | ||
3a292923 TT |
10058 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
10059 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
04d0163c | 10060 | print_recreate_thread (fp); |
9c06b0b4 TJB |
10061 | } |
10062 | ||
9c06b0b4 TJB |
10063 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
10064 | ||
f2478a7e | 10065 | static bool |
9c06b0b4 TJB |
10066 | is_masked_watchpoint (const struct breakpoint *b) |
10067 | { | |
3a292923 | 10068 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
10069 | } |
10070 | ||
53a5351d | 10071 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10072 | hw_read: watch read, |
53a5351d | 10073 | hw_access: watch access (read or write) */ |
c906108c | 10074 | static void |
bbc13ae3 | 10075 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10076 | bool just_location, bool internal) |
c906108c | 10077 | { |
c1fc2657 | 10078 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10079 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10080 | struct value *result; |
bb9d5f81 | 10081 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10082 | const char *exp_start = NULL; |
10083 | const char *exp_end = NULL; | |
10084 | const char *tok, *end_tok; | |
9c06b0b4 | 10085 | int toklen = -1; |
bbc13ae3 KS |
10086 | const char *cond_start = NULL; |
10087 | const char *cond_end = NULL; | |
c906108c | 10088 | enum bptype bp_type; |
37e4754d | 10089 | int thread = -1; |
9c06b0b4 TJB |
10090 | /* Flag to indicate whether we are going to use masks for |
10091 | the hardware watchpoint. */ | |
2e362716 | 10092 | bool use_mask = false; |
9c06b0b4 | 10093 | CORE_ADDR mask = 0; |
2ecee236 | 10094 | int task = -1; |
c906108c | 10095 | |
37e4754d LM |
10096 | /* Make sure that we actually have parameters to parse. */ |
10097 | if (arg != NULL && arg[0] != '\0') | |
10098 | { | |
bbc13ae3 KS |
10099 | const char *value_start; |
10100 | ||
10101 | exp_end = arg + strlen (arg); | |
37e4754d | 10102 | |
9c06b0b4 TJB |
10103 | /* Look for "parameter value" pairs at the end |
10104 | of the arguments string. */ | |
bbc13ae3 | 10105 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10106 | { |
10107 | /* Skip whitespace at the end of the argument list. */ | |
10108 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10109 | tok--; | |
10110 | ||
10111 | /* Find the beginning of the last token. | |
10112 | This is the value of the parameter. */ | |
10113 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10114 | tok--; | |
10115 | value_start = tok + 1; | |
10116 | ||
10117 | /* Skip whitespace. */ | |
10118 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10119 | tok--; | |
10120 | ||
10121 | end_tok = tok; | |
10122 | ||
10123 | /* Find the beginning of the second to last token. | |
10124 | This is the parameter itself. */ | |
10125 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10126 | tok--; | |
10127 | tok++; | |
10128 | toklen = end_tok - tok + 1; | |
10129 | ||
61012eef | 10130 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10131 | { |
5d5658a1 | 10132 | struct thread_info *thr; |
9c06b0b4 TJB |
10133 | /* At this point we've found a "thread" token, which means |
10134 | the user is trying to set a watchpoint that triggers | |
10135 | only in a specific thread. */ | |
5d5658a1 | 10136 | const char *endp; |
37e4754d | 10137 | |
9c06b0b4 TJB |
10138 | if (thread != -1) |
10139 | error(_("You can specify only one thread.")); | |
37e4754d | 10140 | |
2ecee236 | 10141 | if (task != -1) |
0a9ccb9d AB |
10142 | error (_("You can specify only one of thread or task.")); |
10143 | ||
9c06b0b4 | 10144 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10145 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10146 | |
5d5658a1 | 10147 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10148 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10149 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10150 | |
5d5658a1 | 10151 | thread = thr->global_num; |
9c06b0b4 | 10152 | } |
8a18382f TT |
10153 | else if (toklen == 4 && startswith (tok, "task")) |
10154 | { | |
10155 | char *tmp; | |
10156 | ||
2ecee236 | 10157 | if (task != -1) |
980dbf36 AB |
10158 | error(_("You can specify only one task.")); |
10159 | ||
0a9ccb9d AB |
10160 | if (thread != -1) |
10161 | error (_("You can specify only one of thread or task.")); | |
10162 | ||
8a18382f TT |
10163 | task = strtol (value_start, &tmp, 0); |
10164 | if (tmp == value_start) | |
10165 | error (_("Junk after task keyword.")); | |
10166 | if (!valid_task_id (task)) | |
10167 | error (_("Unknown task %d."), task); | |
10168 | } | |
61012eef | 10169 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10170 | { |
10171 | /* We've found a "mask" token, which means the user wants to | |
10172 | create a hardware watchpoint that is going to have the mask | |
10173 | facility. */ | |
65558ca5 | 10174 | struct value *mask_value; |
37e4754d | 10175 | |
9c06b0b4 TJB |
10176 | if (use_mask) |
10177 | error(_("You can specify only one mask.")); | |
37e4754d | 10178 | |
2e362716 | 10179 | use_mask = just_location = true; |
37e4754d | 10180 | |
65558ca5 | 10181 | scoped_value_mark mark; |
9c06b0b4 TJB |
10182 | mask_value = parse_to_comma_and_eval (&value_start); |
10183 | mask = value_as_address (mask_value); | |
9c06b0b4 TJB |
10184 | } |
10185 | else | |
10186 | /* We didn't recognize what we found. We should stop here. */ | |
10187 | break; | |
37e4754d | 10188 | |
9c06b0b4 TJB |
10189 | /* Truncate the string and get rid of the "parameter value" pair before |
10190 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10191 | exp_end = tok; |
9c06b0b4 | 10192 | } |
37e4754d | 10193 | } |
bbc13ae3 KS |
10194 | else |
10195 | exp_end = arg; | |
37e4754d | 10196 | |
bbc13ae3 KS |
10197 | /* Parse the rest of the arguments. From here on out, everything |
10198 | is in terms of a newly allocated string instead of the original | |
10199 | ARG. */ | |
81b1e71c TT |
10200 | std::string expression (arg, exp_end - arg); |
10201 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10202 | innermost_block_tracker tracker; |
10203 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10204 | exp_end = arg; |
fa8a61dc TT |
10205 | /* Remove trailing whitespace from the expression before saving it. |
10206 | This makes the eventual display of the expression string a bit | |
10207 | prettier. */ | |
10208 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10209 | --exp_end; | |
10210 | ||
65d79d4b | 10211 | /* Checking if the expression is not constant. */ |
4d01a485 | 10212 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10213 | { |
10214 | int len; | |
10215 | ||
10216 | len = exp_end - exp_start; | |
10217 | while (len > 0 && isspace (exp_start[len - 1])) | |
10218 | len--; | |
10219 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10220 | } | |
10221 | ||
699bd4cf | 10222 | exp_valid_block = tracker.block (); |
b926417a | 10223 | struct value *mark = value_mark (); |
850645cf | 10224 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10225 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10226 | just_location); | |
06a64a0b | 10227 | |
850645cf | 10228 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10229 | { |
5011c493 | 10230 | saved_bitpos = val_as_value->bitpos (); |
f49d5fa2 | 10231 | saved_bitsize = val_as_value->bitsize (); |
bb9d5f81 PP |
10232 | } |
10233 | ||
850645cf | 10234 | value_ref_ptr val; |
06a64a0b TT |
10235 | if (just_location) |
10236 | { | |
9c06b0b4 TJB |
10237 | int ret; |
10238 | ||
06a64a0b | 10239 | exp_valid_block = NULL; |
850645cf | 10240 | val = release_value (value_addr (result)); |
06a64a0b | 10241 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10242 | |
10243 | if (use_mask) | |
10244 | { | |
850645cf | 10245 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10246 | mask); |
10247 | if (ret == -1) | |
10248 | error (_("This target does not support masked watchpoints.")); | |
10249 | else if (ret == -2) | |
10250 | error (_("Invalid mask or memory region.")); | |
10251 | } | |
06a64a0b | 10252 | } |
850645cf TT |
10253 | else if (val_as_value != NULL) |
10254 | val = release_value (val_as_value); | |
c906108c | 10255 | |
f1735a53 TT |
10256 | tok = skip_spaces (arg); |
10257 | end_tok = skip_to_space (tok); | |
c906108c SS |
10258 | |
10259 | toklen = end_tok - tok; | |
10260 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10261 | { | |
10262 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10263 | innermost_block_tracker if_tracker; |
10264 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10265 | |
10266 | /* The watchpoint expression may not be local, but the condition | |
10267 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10268 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10269 | |
c906108c SS |
10270 | cond_end = tok; |
10271 | } | |
10272 | if (*tok) | |
8a3fe4f8 | 10273 | error (_("Junk at end of command.")); |
c906108c | 10274 | |
bd2b40ac | 10275 | frame_info_ptr wp_frame = block_innermost_frame (exp_valid_block); |
441d7c93 PA |
10276 | |
10277 | /* Save this because create_internal_breakpoint below invalidates | |
10278 | 'wp_frame'. */ | |
10279 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10280 | |
10281 | /* If the expression is "local", then set up a "watchpoint scope" | |
10282 | breakpoint at the point where we've left the scope of the watchpoint | |
10283 | expression. Create the scope breakpoint before the watchpoint, so | |
10284 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10285 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10286 | { |
441d7c93 PA |
10287 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10288 | ||
10289 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10290 | { |
441d7c93 PA |
10291 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10292 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10293 | ||
24b21115 | 10294 | scope_breakpoint |
441d7c93 | 10295 | = create_internal_breakpoint (caller_arch, caller_pc, |
9efa3c7f | 10296 | bp_watchpoint_scope); |
d983da9c | 10297 | |
441d7c93 PA |
10298 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10299 | wp_frame = NULL; | |
10300 | ||
edb3359d | 10301 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10302 | |
edb3359d DJ |
10303 | /* Automatically delete the breakpoint when it hits. */ |
10304 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10305 | |
edb3359d | 10306 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10307 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10308 | |
edb3359d | 10309 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10310 | scope_breakpoint->loc->gdbarch = caller_arch; |
10311 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10312 | scope_breakpoint->loc->address |
a6d9a66e UW |
10313 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10314 | scope_breakpoint->loc->requested_address, | |
60270718 AB |
10315 | scope_breakpoint->type, |
10316 | current_program_space); | |
edb3359d | 10317 | } |
d983da9c DJ |
10318 | } |
10319 | ||
e8369a73 AB |
10320 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10321 | watchpoints here even if hardware watchpoints are turned off, a call | |
10322 | to update_watchpoint later in this function will cause the type to | |
10323 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10324 | ||
10325 | if (accessflag == hw_read) | |
10326 | bp_type = bp_read_watchpoint; | |
10327 | else if (accessflag == hw_access) | |
10328 | bp_type = bp_access_watchpoint; | |
10329 | else | |
10330 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10331 | |
3a292923 | 10332 | std::unique_ptr<watchpoint> w; |
348d480f | 10333 | if (use_mask) |
73063f51 | 10334 | w.reset (new masked_watchpoint (nullptr, bp_type)); |
348d480f | 10335 | else |
73063f51 | 10336 | w.reset (new watchpoint (nullptr, bp_type)); |
3a292923 | 10337 | |
0a9ccb9d | 10338 | /* At most one of thread or task can be set on a watchpoint. */ |
2ecee236 | 10339 | gdb_assert (thread == -1 || task == -1); |
c1fc2657 | 10340 | w->thread = thread; |
8a18382f | 10341 | w->task = task; |
c1fc2657 SM |
10342 | w->disposition = disp_donttouch; |
10343 | w->pspace = current_program_space; | |
b22e99fd | 10344 | w->exp = std::move (exp); |
3a5c3e22 PA |
10345 | w->exp_valid_block = exp_valid_block; |
10346 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10347 | if (just_location) |
10348 | { | |
f28085df | 10349 | struct type *t = val->type (); |
850645cf | 10350 | CORE_ADDR addr = value_as_address (val.get ()); |
06a64a0b | 10351 | |
43cc5389 | 10352 | w->exp_string_reparse |
a4c50be3 | 10353 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10354 | |
8579fd13 AB |
10355 | w->exp_string = xstrprintf ("-location %.*s", |
10356 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10357 | } |
10358 | else | |
a4c50be3 | 10359 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10360 | |
10361 | if (use_mask) | |
10362 | { | |
3a5c3e22 | 10363 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10364 | } |
10365 | else | |
10366 | { | |
3a5c3e22 | 10367 | w->val = val; |
bb9d5f81 PP |
10368 | w->val_bitpos = saved_bitpos; |
10369 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10370 | w->val_valid = true; |
9c06b0b4 | 10371 | } |
77b06cd7 | 10372 | |
c906108c | 10373 | if (cond_start) |
6f781ee3 | 10374 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10375 | else |
c1fc2657 | 10376 | w->cond_string = 0; |
c5aa993b | 10377 | |
441d7c93 | 10378 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10379 | { |
441d7c93 | 10380 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10381 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10382 | } |
c906108c | 10383 | else |
f6bc2008 | 10384 | { |
3a5c3e22 PA |
10385 | w->watchpoint_frame = null_frame_id; |
10386 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10387 | } |
c906108c | 10388 | |
d983da9c | 10389 | if (scope_breakpoint != NULL) |
c906108c | 10390 | { |
d983da9c DJ |
10391 | /* The scope breakpoint is related to the watchpoint. We will |
10392 | need to act on them together. */ | |
c1fc2657 | 10393 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10394 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10395 | } |
d983da9c | 10396 | |
06a64a0b TT |
10397 | if (!just_location) |
10398 | value_free_to_mark (mark); | |
2d134ed3 | 10399 | |
b270e6f9 TT |
10400 | /* Finally update the new watchpoint. This creates the locations |
10401 | that should be inserted. */ | |
d8de7963 | 10402 | update_watchpoint (w.get (), true /* reparse */); |
a9634178 | 10403 | |
b270e6f9 | 10404 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10405 | } |
10406 | ||
e09342b5 | 10407 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10408 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10409 | |
c906108c | 10410 | static int |
a6535de1 | 10411 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10412 | { |
10413 | int found_memory_cnt = 0; | |
10414 | ||
10415 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10416 | if (!can_use_hw_watchpoints) |
c906108c | 10417 | return 0; |
c5aa993b | 10418 | |
a6535de1 TT |
10419 | gdb_assert (!vals.empty ()); |
10420 | struct value *head = vals[0].get (); | |
10421 | ||
5c44784c JM |
10422 | /* Make sure that the value of the expression depends only upon |
10423 | memory contents, and values computed from them within GDB. If we | |
10424 | find any register references or function calls, we can't use a | |
10425 | hardware watchpoint. | |
10426 | ||
10427 | The idea here is that evaluating an expression generates a series | |
10428 | of values, one holding the value of every subexpression. (The | |
10429 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10430 | a*b+c.) GDB's values hold almost enough information to establish | |
10431 | the criteria given above --- they identify memory lvalues, | |
10432 | register lvalues, computed values, etcetera. So we can evaluate | |
10433 | the expression, and then scan the chain of values that leaves | |
10434 | behind to decide whether we can detect any possible change to the | |
10435 | expression's final value using only hardware watchpoints. | |
10436 | ||
10437 | However, I don't think that the values returned by inferior | |
10438 | function calls are special in any way. So this function may not | |
10439 | notice that an expression involving an inferior function call | |
10440 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10441 | for (const value_ref_ptr &iter : vals) |
c906108c | 10442 | { |
a6535de1 TT |
10443 | struct value *v = iter.get (); |
10444 | ||
736355f2 | 10445 | if (v->lval () == lval_memory) |
c906108c | 10446 | { |
3ee3b270 | 10447 | if (v != head && v->lazy ()) |
8464be76 DJ |
10448 | /* A lazy memory lvalue in the chain is one that GDB never |
10449 | needed to fetch; we either just used its address (e.g., | |
10450 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10451 | in `a,b'). This doesn't apply to HEAD; if that is | |
10452 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10453 | ; |
53a5351d | 10454 | else |
5c44784c JM |
10455 | { |
10456 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10457 | it with hardware watchpoints. */ |
d0c97917 | 10458 | struct type *vtype = check_typedef (v->type ()); |
2e70b7b9 MS |
10459 | |
10460 | /* We only watch structs and arrays if user asked for it | |
10461 | explicitly, never if they just happen to appear in a | |
10462 | middle of some value chain. */ | |
10463 | if (v == head | |
78134374 SM |
10464 | || (vtype->code () != TYPE_CODE_STRUCT |
10465 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10466 | { |
9feb2d07 | 10467 | CORE_ADDR vaddr = v->address (); |
e09342b5 TJB |
10468 | int len; |
10469 | int num_regs; | |
10470 | ||
a9634178 | 10471 | len = (target_exact_watchpoints |
e09342b5 | 10472 | && is_scalar_type_recursive (vtype))? |
d0c97917 | 10473 | 1 : v->type ()->length (); |
2e70b7b9 | 10474 | |
e09342b5 TJB |
10475 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10476 | if (!num_regs) | |
2e70b7b9 MS |
10477 | return 0; |
10478 | else | |
e09342b5 | 10479 | found_memory_cnt += num_regs; |
2e70b7b9 | 10480 | } |
5c44784c | 10481 | } |
c5aa993b | 10482 | } |
b2227e67 | 10483 | else if (v->lval () != not_lval && !v->deprecated_modifiable ()) |
38b6c3b3 | 10484 | return 0; /* These are values from the history (e.g., $1). */ |
736355f2 | 10485 | else if (v->lval () == lval_register) |
38b6c3b3 | 10486 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10487 | } |
10488 | ||
10489 | /* The expression itself looks suitable for using a hardware | |
10490 | watchpoint, but give the target machine a chance to reject it. */ | |
10491 | return found_memory_cnt; | |
10492 | } | |
10493 | ||
8b93c638 | 10494 | void |
2e362716 | 10495 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10496 | { |
84f4c1fe | 10497 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10498 | } |
10499 | ||
a15a5258 AB |
10500 | /* Options for the watch, awatch, and rwatch commands. */ |
10501 | ||
10502 | struct watch_options | |
10503 | { | |
10504 | /* For -location. */ | |
10505 | bool location = false; | |
10506 | }; | |
10507 | ||
10508 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10509 | ||
10510 | Historically GDB always accepted both '-location' and '-l' flags for | |
10511 | these commands (both flags being synonyms). When converting to the | |
10512 | newer option scheme only '-location' is added here. That's fine (for | |
10513 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10514 | accepted, so '-l', '-loc', are now all accepted. | |
10515 | ||
10516 | What this means is that, if in the future, we add any new flag here | |
10517 | that starts with '-l' then this will break backward compatibility, so | |
10518 | please, don't do that! */ | |
10519 | ||
10520 | static const gdb::option::option_def watch_option_defs[] = { | |
10521 | gdb::option::flag_option_def<watch_options> { | |
10522 | "location", | |
10523 | [] (watch_options *opt) { return &opt->location; }, | |
10524 | N_("\ | |
10525 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10526 | -l can be used as a short form of -location."), | |
10527 | }, | |
10528 | }; | |
10529 | ||
10530 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10531 | commands. */ | |
10532 | ||
10533 | static gdb::option::option_def_group | |
10534 | make_watch_options_def_group (watch_options *opts) | |
10535 | { | |
10536 | return {{watch_option_defs}, opts}; | |
10537 | } | |
10538 | ||
06a64a0b TT |
10539 | /* A helper function that looks for the "-location" argument and then |
10540 | calls watch_command_1. */ | |
10541 | ||
10542 | static void | |
0b39b52e | 10543 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10544 | { |
a15a5258 AB |
10545 | watch_options opts; |
10546 | auto grp = make_watch_options_def_group (&opts); | |
10547 | gdb::option::process_options | |
10548 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10549 | if (arg != nullptr && *arg == '\0') | |
10550 | arg = nullptr; | |
10551 | ||
10552 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10553 | } | |
06a64a0b | 10554 | |
a15a5258 AB |
10555 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10556 | static void | |
10557 | watch_command_completer (struct cmd_list_element *ignore, | |
10558 | completion_tracker &tracker, | |
10559 | const char *text, const char * /*word*/) | |
10560 | { | |
10561 | const auto group = make_watch_options_def_group (nullptr); | |
10562 | if (gdb::option::complete_options | |
10563 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10564 | return; | |
06a64a0b | 10565 | |
a15a5258 AB |
10566 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10567 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10568 | } |
8926118c | 10569 | |
c5aa993b | 10570 | static void |
0b39b52e | 10571 | watch_command (const char *arg, int from_tty) |
c906108c | 10572 | { |
06a64a0b | 10573 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10574 | } |
10575 | ||
8b93c638 | 10576 | void |
2e362716 | 10577 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10578 | { |
84f4c1fe | 10579 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10580 | } |
8926118c | 10581 | |
c5aa993b | 10582 | static void |
0b39b52e | 10583 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10584 | { |
06a64a0b | 10585 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10586 | } |
10587 | ||
8b93c638 | 10588 | void |
2e362716 | 10589 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10590 | { |
84f4c1fe | 10591 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10592 | } |
8926118c | 10593 | |
c5aa993b | 10594 | static void |
0b39b52e | 10595 | awatch_command (const char *arg, int from_tty) |
c906108c | 10596 | { |
06a64a0b | 10597 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10598 | } |
c906108c | 10599 | \f |
c5aa993b | 10600 | |
cfc31633 PA |
10601 | /* Data for the FSM that manages the until(location)/advance commands |
10602 | in infcmd.c. Here because it uses the mechanisms of | |
10603 | breakpoints. */ | |
c906108c | 10604 | |
46e3ed7f | 10605 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10606 | { |
46e3ed7f | 10607 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10608 | int thread; |
10609 | ||
df631783 PA |
10610 | /* The breakpoint set at the return address in the caller frame, |
10611 | plus breakpoints at all the destination locations. */ | |
10612 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10613 | |
46e3ed7f | 10614 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10615 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10616 | : thread_fsm (cmd_interp), |
10617 | thread (thread), | |
df631783 | 10618 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10619 | { |
10620 | } | |
cfc31633 | 10621 | |
46e3ed7f TT |
10622 | void clean_up (struct thread_info *thread) override; |
10623 | bool should_stop (struct thread_info *thread) override; | |
10624 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10625 | }; |
10626 | ||
cfc31633 PA |
10627 | /* Implementation of the 'should_stop' FSM method for the |
10628 | until(location)/advance commands. */ | |
10629 | ||
46e3ed7f TT |
10630 | bool |
10631 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10632 | { |
df631783 PA |
10633 | for (const breakpoint_up &bp : breakpoints) |
10634 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10635 | bp.get ()) != NULL) | |
10636 | { | |
10637 | set_finished (); | |
10638 | break; | |
10639 | } | |
cfc31633 | 10640 | |
46e3ed7f | 10641 | return true; |
cfc31633 PA |
10642 | } |
10643 | ||
10644 | /* Implementation of the 'clean_up' FSM method for the | |
10645 | until(location)/advance commands. */ | |
10646 | ||
46e3ed7f TT |
10647 | void |
10648 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10649 | { |
cfc31633 | 10650 | /* Clean up our temporary breakpoints. */ |
df631783 | 10651 | breakpoints.clear (); |
46e3ed7f | 10652 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10653 | } |
10654 | ||
10655 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10656 | until(location)/advance commands. */ | |
10657 | ||
46e3ed7f TT |
10658 | enum async_reply_reason |
10659 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10660 | { |
10661 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10662 | } |
10663 | ||
c906108c | 10664 | void |
f2fc3015 | 10665 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10666 | { |
bd2b40ac | 10667 | frame_info_ptr frame; |
8556afb4 PA |
10668 | struct gdbarch *frame_gdbarch; |
10669 | struct frame_id stack_frame_id; | |
10670 | struct frame_id caller_frame_id; | |
186c406b TT |
10671 | int thread; |
10672 | struct thread_info *tp; | |
c906108c | 10673 | |
70509625 | 10674 | clear_proceed_status (0); |
c906108c SS |
10675 | |
10676 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10677 | this function. */ |
c5aa993b | 10678 | |
264f9890 | 10679 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f | 10680 | |
6c5b2ebe PA |
10681 | std::vector<symtab_and_line> sals |
10682 | = (last_displayed_sal_is_valid () | |
264f9890 | 10683 | ? decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, |
6c5b2ebe PA |
10684 | get_last_displayed_symtab (), |
10685 | get_last_displayed_line ()) | |
264f9890 | 10686 | : decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, |
cafb3438 | 10687 | NULL, NULL, 0)); |
c5aa993b | 10688 | |
df631783 | 10689 | if (sals.empty ()) |
8a3fe4f8 | 10690 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10691 | |
c906108c | 10692 | if (*arg) |
8a3fe4f8 | 10693 | error (_("Junk at end of arguments.")); |
c5aa993b | 10694 | |
186c406b | 10695 | tp = inferior_thread (); |
5d5658a1 | 10696 | thread = tp->global_num; |
186c406b | 10697 | |
8556afb4 PA |
10698 | /* Note linespec handling above invalidates the frame chain. |
10699 | Installing a breakpoint also invalidates the frame chain (as it | |
10700 | may need to switch threads), so do any frame handling before | |
10701 | that. */ | |
10702 | ||
10703 | frame = get_selected_frame (NULL); | |
10704 | frame_gdbarch = get_frame_arch (frame); | |
10705 | stack_frame_id = get_stack_frame_id (frame); | |
10706 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10707 | |
ae66c1fc EZ |
10708 | /* Keep within the current frame, or in frames called by the current |
10709 | one. */ | |
edb3359d | 10710 | |
df631783 | 10711 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10712 | |
10713 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10714 | ||
883bc8d1 | 10715 | if (frame_id_p (caller_frame_id)) |
c906108c | 10716 | { |
883bc8d1 | 10717 | struct symtab_and_line sal2; |
cfc31633 | 10718 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10719 | |
10720 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10721 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10722 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10723 | |
10724 | breakpoint_up caller_breakpoint | |
10725 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10726 | caller_frame_id, bp_until); | |
10727 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10728 | |
0f443d1b | 10729 | set_longjmp_breakpoint (tp, stack_frame_id); |
5419bdae | 10730 | lj_deleter.emplace (thread); |
c906108c | 10731 | } |
c5aa993b | 10732 | |
c70a6932 JK |
10733 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10734 | frame = NULL; | |
10735 | ||
df631783 PA |
10736 | /* If the user told us to continue until a specified location, we |
10737 | don't specify a frame at which we need to stop. Otherwise, | |
10738 | specify the selected frame, because we want to stop only at the | |
10739 | very same frame. */ | |
10740 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10741 | ||
10742 | for (symtab_and_line &sal : sals) | |
10743 | { | |
10744 | resolve_sal_pc (&sal); | |
10745 | ||
10746 | breakpoint_up location_breakpoint | |
10747 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10748 | stop_frame_id, bp_until); | |
10749 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10750 | } | |
883bc8d1 | 10751 | |
573269a8 LS |
10752 | tp->set_thread_fsm |
10753 | (std::unique_ptr<thread_fsm> | |
10754 | (new until_break_fsm (command_interp (), tp->global_num, | |
10755 | std::move (breakpoints)))); | |
f107f563 | 10756 | |
5419bdae TT |
10757 | if (lj_deleter) |
10758 | lj_deleter->release (); | |
f107f563 | 10759 | |
cfc31633 | 10760 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10761 | } |
ae66c1fc | 10762 | |
c906108c SS |
10763 | \f |
10764 | ||
81b1e71c | 10765 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10766 | |
10767 | static int | |
81b1e71c | 10768 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10769 | { |
81b1e71c TT |
10770 | uintptr_t ua = (uintptr_t) a; |
10771 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10772 | |
81b1e71c | 10773 | if (a->number < b->number) |
8a2c437b | 10774 | return -1; |
81b1e71c | 10775 | else if (a->number > b->number) |
8a2c437b TT |
10776 | return 1; |
10777 | ||
10778 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10779 | the number 0. */ | |
10780 | if (ua < ub) | |
10781 | return -1; | |
94b0e70d | 10782 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10783 | } |
10784 | ||
80f8a6eb | 10785 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10786 | |
10787 | static void | |
0b39b52e | 10788 | clear_command (const char *arg, int from_tty) |
c906108c | 10789 | { |
c906108c | 10790 | int default_match; |
c906108c | 10791 | |
6c5b2ebe PA |
10792 | std::vector<symtab_and_line> decoded_sals; |
10793 | symtab_and_line last_sal; | |
10794 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10795 | if (arg) |
10796 | { | |
6c5b2ebe PA |
10797 | decoded_sals |
10798 | = decode_line_with_current_source (arg, | |
10799 | (DECODE_LINE_FUNFIRSTLINE | |
10800 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10801 | default_match = 0; |
6c5b2ebe | 10802 | sals = decoded_sals; |
c906108c SS |
10803 | } |
10804 | else | |
10805 | { | |
1bfeeb0f JL |
10806 | /* Set sal's line, symtab, pc, and pspace to the values |
10807 | corresponding to the last call to print_frame_info. If the | |
10808 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10809 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10810 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10811 | error (_("No source file specified.")); |
c906108c | 10812 | |
c906108c | 10813 | default_match = 1; |
6c5b2ebe | 10814 | sals = last_sal; |
c906108c SS |
10815 | } |
10816 | ||
4a64f543 MS |
10817 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10818 | seems, because all existing breakpoints typically have both | |
10819 | file/line and pc set. So, if clear is given file/line, we can | |
10820 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10821 | |
10822 | We only support clearing given the address explicitly | |
10823 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10824 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10825 | due to optimization, all in one block. |
4a64f543 MS |
10826 | |
10827 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10828 | PC corresponding to the same file:line, the breakpoint won't |
10829 | be cleared. We probably can still clear the breakpoint, but | |
10830 | since the other PC value is never presented to user, user | |
10831 | can only find it by guessing, and it does not seem important | |
10832 | to support that. */ | |
10833 | ||
4a64f543 MS |
10834 | /* For each line spec given, delete bps which correspond to it. Do |
10835 | it in two passes, solely to preserve the current behavior that | |
10836 | from_tty is forced true if we delete more than one | |
10837 | breakpoint. */ | |
c906108c | 10838 | |
81b1e71c | 10839 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10840 | for (const auto &sal : sals) |
c906108c | 10841 | { |
05cba821 JK |
10842 | const char *sal_fullname; |
10843 | ||
c906108c | 10844 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10845 | If line given (pc == 0), clear all bpts on specified line. |
10846 | If defaulting, clear all bpts on default line | |
10847 | or at default pc. | |
c5aa993b | 10848 | |
dda83cd7 | 10849 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10850 | |
dda83cd7 SM |
10851 | 0 1 pc |
10852 | 1 1 pc _and_ line | |
10853 | 0 0 line | |
10854 | 1 0 <can't happen> */ | |
c906108c | 10855 | |
05cba821 JK |
10856 | sal_fullname = (sal.symtab == NULL |
10857 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10858 | |
4a64f543 | 10859 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10860 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10861 | { |
0d381245 | 10862 | int match = 0; |
4a64f543 | 10863 | /* Are we going to delete b? */ |
a5c69b1e EL |
10864 | if (b->type != bp_none && !is_watchpoint (b) |
10865 | && user_breakpoint_p (b)) | |
0d381245 | 10866 | { |
40cb8ca5 | 10867 | for (bp_location *loc : b->locations ()) |
0d381245 | 10868 | { |
f8eba3c6 TT |
10869 | /* If the user specified file:line, don't allow a PC |
10870 | match. This matches historical gdb behavior. */ | |
10871 | int pc_match = (!sal.explicit_line | |
10872 | && sal.pc | |
10873 | && (loc->pspace == sal.pspace) | |
10874 | && (loc->address == sal.pc) | |
10875 | && (!section_is_overlay (loc->section) | |
10876 | || loc->section == sal.section)); | |
4aac40c8 TT |
10877 | int line_match = 0; |
10878 | ||
10879 | if ((default_match || sal.explicit_line) | |
2f202fde | 10880 | && loc->symtab != NULL |
05cba821 | 10881 | && sal_fullname != NULL |
4aac40c8 | 10882 | && sal.pspace == loc->pspace |
05cba821 JK |
10883 | && loc->line_number == sal.line |
10884 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10885 | sal_fullname) == 0) | |
10886 | line_match = 1; | |
4aac40c8 | 10887 | |
0d381245 VP |
10888 | if (pc_match || line_match) |
10889 | { | |
10890 | match = 1; | |
10891 | break; | |
10892 | } | |
10893 | } | |
10894 | } | |
10895 | ||
10896 | if (match) | |
81b1e71c | 10897 | found.push_back (b); |
c906108c | 10898 | } |
80f8a6eb | 10899 | } |
8a2c437b | 10900 | |
80f8a6eb | 10901 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10902 | if (found.empty ()) |
80f8a6eb MS |
10903 | { |
10904 | if (arg) | |
8a3fe4f8 | 10905 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10906 | else |
8a3fe4f8 | 10907 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10908 | } |
c906108c | 10909 | |
8a2c437b | 10910 | /* Remove duplicates from the vec. */ |
81b1e71c | 10911 | std::sort (found.begin (), found.end (), |
b926417a | 10912 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10913 | { |
b926417a | 10914 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10915 | }); |
10916 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10917 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10918 | { |
b926417a | 10919 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10920 | }), |
10921 | found.end ()); | |
8a2c437b | 10922 | |
81b1e71c | 10923 | if (found.size () > 1) |
4a64f543 | 10924 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10925 | if (from_tty) |
a3f17187 | 10926 | { |
81b1e71c | 10927 | if (found.size () == 1) |
6cb06a8c | 10928 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10929 | else |
6cb06a8c | 10930 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10931 | } |
d6e956e5 | 10932 | |
81b1e71c | 10933 | for (breakpoint *iter : found) |
80f8a6eb | 10934 | { |
c5aa993b | 10935 | if (from_tty) |
6cb06a8c | 10936 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10937 | delete_breakpoint (iter); |
c906108c | 10938 | } |
80f8a6eb | 10939 | if (from_tty) |
a11ac3b3 | 10940 | gdb_putc ('\n'); |
c906108c SS |
10941 | } |
10942 | \f | |
10943 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10944 | all breakpoints that are marked for deletion, whether hit or not. | |
10945 | This is called after any breakpoint is hit, or after errors. */ | |
10946 | ||
10947 | void | |
313f3b21 | 10948 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10949 | { |
c906108c | 10950 | for (; bs; bs = bs->next) |
f431efe5 PA |
10951 | if (bs->breakpoint_at |
10952 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10953 | && bs->stop) |
f431efe5 | 10954 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10955 | |
1428b37a | 10956 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10957 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10958 | delete_breakpoint (b); |
c906108c SS |
10959 | } |
10960 | ||
4a64f543 | 10961 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10962 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10963 | bl_address_is_meaningful says), secondarily by ordering first |
10964 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10965 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10966 | |
10967 | static int | |
39ef2f62 | 10968 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10969 | { |
876fa593 | 10970 | if (a->address != b->address) |
39ef2f62 | 10971 | return a->address < b->address; |
876fa593 | 10972 | |
dea2aa5f LM |
10973 | /* Sort locations at the same address by their pspace number, keeping |
10974 | locations of the same inferior (in a multi-inferior environment) | |
10975 | grouped. */ | |
10976 | ||
10977 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10978 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10979 | |
876fa593 | 10980 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10981 | if (a->permanent != b->permanent) |
39ef2f62 | 10982 | return a->permanent > b->permanent; |
876fa593 | 10983 | |
7f32a4d5 PA |
10984 | /* Sort by type in order to make duplicate determination easier. |
10985 | See update_global_location_list. This is kept in sync with | |
10986 | breakpoint_locations_match. */ | |
10987 | if (a->loc_type < b->loc_type) | |
10988 | return true; | |
10989 | ||
10990 | /* Likewise, for range-breakpoints, sort by length. */ | |
10991 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10992 | && b->loc_type == bp_loc_hardware_breakpoint | |
10993 | && a->length < b->length) | |
10994 | return true; | |
10995 | ||
c56a97f9 JK |
10996 | /* Make the internal GDB representation stable across GDB runs |
10997 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10998 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10999 | |
11000 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11001 | return a->owner->number < b->owner->number; |
876fa593 | 11002 | |
39ef2f62 | 11003 | return a < b; |
876fa593 JK |
11004 | } |
11005 | ||
f5336ca5 PA |
11006 | /* Set bp_locations_placed_address_before_address_max and |
11007 | bp_locations_shadow_len_after_address_max according to the current | |
11008 | content of the bp_locations array. */ | |
f7545552 TT |
11009 | |
11010 | static void | |
f5336ca5 | 11011 | bp_locations_target_extensions_update (void) |
f7545552 | 11012 | { |
f5336ca5 PA |
11013 | bp_locations_placed_address_before_address_max = 0; |
11014 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 11015 | |
48d7020b | 11016 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
11017 | { |
11018 | CORE_ADDR start, end, addr; | |
11019 | ||
11020 | if (!bp_location_has_shadow (bl)) | |
11021 | continue; | |
11022 | ||
11023 | start = bl->target_info.placed_address; | |
11024 | end = start + bl->target_info.shadow_len; | |
11025 | ||
11026 | gdb_assert (bl->address >= start); | |
11027 | addr = bl->address - start; | |
f5336ca5 PA |
11028 | if (addr > bp_locations_placed_address_before_address_max) |
11029 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11030 | |
11031 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11032 | ||
11033 | gdb_assert (bl->address < end); | |
11034 | addr = end - bl->address; | |
f5336ca5 PA |
11035 | if (addr > bp_locations_shadow_len_after_address_max) |
11036 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11037 | } |
f7545552 TT |
11038 | } |
11039 | ||
1e4d1764 YQ |
11040 | /* Download tracepoint locations if they haven't been. */ |
11041 | ||
11042 | static void | |
11043 | download_tracepoint_locations (void) | |
11044 | { | |
dd2e65cc | 11045 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11046 | |
5ed8105e | 11047 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11048 | |
f6d17b2b | 11049 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
11050 | { |
11051 | struct tracepoint *t; | |
d8de7963 | 11052 | bool bp_location_downloaded = false; |
1e4d1764 | 11053 | |
7ed2c994 | 11054 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11055 | ? !may_insert_fast_tracepoints |
11056 | : !may_insert_tracepoints)) | |
11057 | continue; | |
11058 | ||
dd2e65cc YQ |
11059 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11060 | { | |
11061 | if (target_can_download_tracepoint ()) | |
11062 | can_download_tracepoint = TRIBOOL_TRUE; | |
11063 | else | |
11064 | can_download_tracepoint = TRIBOOL_FALSE; | |
11065 | } | |
11066 | ||
11067 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11068 | break; | |
11069 | ||
40cb8ca5 | 11070 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
11071 | { |
11072 | /* In tracepoint, locations are _never_ duplicated, so | |
11073 | should_be_inserted is equivalent to | |
11074 | unduplicated_should_be_inserted. */ | |
11075 | if (!should_be_inserted (bl) || bl->inserted) | |
11076 | continue; | |
1e4d1764 | 11077 | |
7ed2c994 | 11078 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11079 | |
7ed2c994 | 11080 | target_download_tracepoint (bl); |
1e4d1764 | 11081 | |
7ed2c994 | 11082 | bl->inserted = 1; |
d8de7963 | 11083 | bp_location_downloaded = true; |
7ed2c994 YQ |
11084 | } |
11085 | t = (struct tracepoint *) b; | |
11086 | t->number_on_target = b->number; | |
f2a8bc8a | 11087 | if (bp_location_downloaded) |
76727919 | 11088 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11089 | } |
1e4d1764 YQ |
11090 | } |
11091 | ||
934709f0 PW |
11092 | /* Swap the insertion/duplication state between two locations. */ |
11093 | ||
11094 | static void | |
11095 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11096 | { | |
11097 | const int left_inserted = left->inserted; | |
11098 | const int left_duplicate = left->duplicate; | |
b775012e | 11099 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11100 | const struct bp_target_info left_target_info = left->target_info; |
11101 | ||
1e4d1764 YQ |
11102 | /* Locations of tracepoints can never be duplicated. */ |
11103 | if (is_tracepoint (left->owner)) | |
11104 | gdb_assert (!left->duplicate); | |
11105 | if (is_tracepoint (right->owner)) | |
11106 | gdb_assert (!right->duplicate); | |
11107 | ||
934709f0 PW |
11108 | left->inserted = right->inserted; |
11109 | left->duplicate = right->duplicate; | |
b775012e | 11110 | left->needs_update = right->needs_update; |
934709f0 PW |
11111 | left->target_info = right->target_info; |
11112 | right->inserted = left_inserted; | |
11113 | right->duplicate = left_duplicate; | |
b775012e | 11114 | right->needs_update = left_needs_update; |
934709f0 PW |
11115 | right->target_info = left_target_info; |
11116 | } | |
11117 | ||
b775012e LM |
11118 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11119 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11120 | conditions on the target's side. Such conditions need to be updated on | |
11121 | the target. */ | |
11122 | ||
11123 | static void | |
11124 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11125 | { | |
b775012e LM |
11126 | CORE_ADDR address = 0; |
11127 | int pspace_num; | |
11128 | ||
11129 | address = bl->address; | |
11130 | pspace_num = bl->pspace->num; | |
11131 | ||
11132 | /* This is only meaningful if the target is | |
11133 | evaluating conditions and if the user has | |
11134 | opted for condition evaluation on the target's | |
11135 | side. */ | |
11136 | if (gdb_evaluates_breakpoint_condition_p () | |
11137 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11138 | return; | |
11139 | ||
11140 | /* Flag all breakpoint locations with this address and | |
11141 | the same program space as the location | |
11142 | as "its condition has changed". We need to | |
11143 | update the conditions on the target's side. */ | |
e0d9a270 | 11144 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11145 | { |
b775012e LM |
11146 | if (!is_breakpoint (loc->owner) |
11147 | || pspace_num != loc->pspace->num) | |
11148 | continue; | |
11149 | ||
11150 | /* Flag the location appropriately. We use a different state to | |
11151 | let everyone know that we already updated the set of locations | |
11152 | with addr bl->address and program space bl->pspace. This is so | |
11153 | we don't have to keep calling these functions just to mark locations | |
11154 | that have already been marked. */ | |
11155 | loc->condition_changed = condition_updated; | |
11156 | ||
11157 | /* Free the agent expression bytecode as well. We will compute | |
11158 | it later on. */ | |
833177a4 | 11159 | loc->cond_bytecode.reset (); |
b775012e LM |
11160 | } |
11161 | } | |
7f32a4d5 | 11162 | |
44702360 PA |
11163 | /* Called whether new breakpoints are created, or existing breakpoints |
11164 | deleted, to update the global location list and recompute which | |
11165 | locations are duplicate of which. | |
b775012e | 11166 | |
04086b45 PA |
11167 | The INSERT_MODE flag determines whether locations may not, may, or |
11168 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11169 | info. */ | |
b60e7edf | 11170 | |
0d381245 | 11171 | static void |
44702360 | 11172 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11173 | { |
b775012e LM |
11174 | /* Last breakpoint location address that was marked for update. */ |
11175 | CORE_ADDR last_addr = 0; | |
11176 | /* Last breakpoint location program space that was marked for update. */ | |
11177 | int last_pspace_num = -1; | |
f7545552 | 11178 | |
2d134ed3 PA |
11179 | /* Used in the duplicates detection below. When iterating over all |
11180 | bp_locations, points to the first bp_location of a given address. | |
11181 | Breakpoints and watchpoints of different types are never | |
11182 | duplicates of each other. Keep one pointer for each type of | |
11183 | breakpoint/watchpoint, so we only need to loop over all locations | |
11184 | once. */ | |
11185 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11186 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11187 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11188 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11189 | |
f5336ca5 PA |
11190 | /* Saved former bp_locations array which we compare against the newly |
11191 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11192 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11193 | bp_locations.clear (); | |
876fa593 | 11194 | |
43892fdf | 11195 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11196 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11197 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11198 | |
11199 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11200 | breakpoint. Do this before deciding whether locations are | |
11201 | duplicates. Also do this before sorting because sorting order | |
11202 | depends on location type. */ | |
5d51cd5d SM |
11203 | for (bp_location *loc : bp_locations) |
11204 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11205 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11206 | |
5d51cd5d | 11207 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11208 | bp_location_is_less_than); |
876fa593 | 11209 | |
f5336ca5 | 11210 | bp_locations_target_extensions_update (); |
74960c60 | 11211 | |
4a64f543 MS |
11212 | /* Identify bp_location instances that are no longer present in the |
11213 | new list, and therefore should be freed. Note that it's not | |
11214 | necessary that those locations should be removed from inferior -- | |
11215 | if there's another location at the same address (previously | |
11216 | marked as duplicate), we don't need to remove/insert the | |
11217 | location. | |
876fa593 | 11218 | |
4a64f543 MS |
11219 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11220 | and former bp_location array state respectively. */ | |
876fa593 | 11221 | |
5d51cd5d SM |
11222 | size_t loc_i = 0; |
11223 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11224 | { |
e5dd4106 | 11225 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11226 | not, we have to free it. */ |
d8de7963 | 11227 | bool found_object = false; |
20874c92 | 11228 | /* Tells if the location should remain inserted in the target. */ |
d8de7963 AB |
11229 | bool keep_in_target = false; |
11230 | bool removed = false; | |
876fa593 | 11231 | |
4a64f543 MS |
11232 | /* Skip LOCP entries which will definitely never be needed. |
11233 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11234 | while (loc_i < bp_locations.size () |
11235 | && bp_locations[loc_i]->address < old_loc->address) | |
11236 | loc_i++; | |
c7d46a38 | 11237 | |
5d51cd5d SM |
11238 | for (size_t loc2_i = loc_i; |
11239 | (loc2_i < bp_locations.size () | |
11240 | && bp_locations[loc2_i]->address == old_loc->address); | |
11241 | loc2_i++) | |
c7d46a38 | 11242 | { |
b775012e LM |
11243 | /* Check if this is a new/duplicated location or a duplicated |
11244 | location that had its condition modified. If so, we want to send | |
11245 | its condition to the target if evaluation of conditions is taking | |
11246 | place there. */ | |
5d51cd5d | 11247 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11248 | && (last_addr != old_loc->address |
11249 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11250 | { |
5d51cd5d | 11251 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11252 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11253 | } |
b775012e | 11254 | |
5d51cd5d | 11255 | if (bp_locations[loc2_i] == old_loc) |
d8de7963 | 11256 | found_object = true; |
c7d46a38 | 11257 | } |
74960c60 | 11258 | |
b775012e LM |
11259 | /* We have already handled this address, update it so that we don't |
11260 | have to go through updates again. */ | |
11261 | last_addr = old_loc->address; | |
11262 | ||
11263 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11264 | if (!found_object) | |
11265 | force_breakpoint_reinsertion (old_loc); | |
11266 | ||
4a64f543 MS |
11267 | /* If this location is no longer present, and inserted, look if |
11268 | there's maybe a new location at the same address. If so, | |
11269 | mark that one inserted, and don't remove this one. This is | |
11270 | needed so that we don't have a time window where a breakpoint | |
11271 | at certain location is not inserted. */ | |
74960c60 | 11272 | |
876fa593 | 11273 | if (old_loc->inserted) |
0d381245 | 11274 | { |
4a64f543 MS |
11275 | /* If the location is inserted now, we might have to remove |
11276 | it. */ | |
74960c60 | 11277 | |
876fa593 | 11278 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11279 | { |
4a64f543 MS |
11280 | /* The location is still present in the location list, |
11281 | and still should be inserted. Don't do anything. */ | |
d8de7963 | 11282 | keep_in_target = true; |
74960c60 VP |
11283 | } |
11284 | else | |
11285 | { | |
b775012e LM |
11286 | /* This location still exists, but it won't be kept in the |
11287 | target since it may have been disabled. We proceed to | |
11288 | remove its target-side condition. */ | |
11289 | ||
4a64f543 MS |
11290 | /* The location is either no longer present, or got |
11291 | disabled. See if there's another location at the | |
11292 | same address, in which case we don't need to remove | |
11293 | this one from the target. */ | |
876fa593 | 11294 | |
2bdf28a0 | 11295 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11296 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11297 | { |
5d51cd5d SM |
11298 | for (size_t loc2_i = loc_i; |
11299 | (loc2_i < bp_locations.size () | |
11300 | && bp_locations[loc2_i]->address == old_loc->address); | |
11301 | loc2_i++) | |
876fa593 | 11302 | { |
5d51cd5d | 11303 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11304 | |
7f32a4d5 PA |
11305 | if (loc2 == old_loc) |
11306 | continue; | |
11307 | ||
2d134ed3 | 11308 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11309 | { |
85d721b8 PA |
11310 | /* Read watchpoint locations are switched to |
11311 | access watchpoints, if the former are not | |
11312 | supported, but the latter are. */ | |
11313 | if (is_hardware_watchpoint (old_loc->owner)) | |
11314 | { | |
11315 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11316 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11317 | } | |
11318 | ||
934709f0 PW |
11319 | /* loc2 is a duplicated location. We need to check |
11320 | if it should be inserted in case it will be | |
11321 | unduplicated. */ | |
7f32a4d5 | 11322 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11323 | { |
934709f0 | 11324 | swap_insertion (old_loc, loc2); |
d8de7963 | 11325 | keep_in_target = true; |
c7d46a38 PA |
11326 | break; |
11327 | } | |
876fa593 JK |
11328 | } |
11329 | } | |
11330 | } | |
74960c60 VP |
11331 | } |
11332 | ||
20874c92 VP |
11333 | if (!keep_in_target) |
11334 | { | |
834c0d03 | 11335 | if (remove_breakpoint (old_loc)) |
20874c92 | 11336 | { |
4a64f543 MS |
11337 | /* This is just about all we can do. We could keep |
11338 | this location on the global list, and try to | |
11339 | remove it next time, but there's no particular | |
11340 | reason why we will succeed next time. | |
20874c92 | 11341 | |
4a64f543 MS |
11342 | Note that at this point, old_loc->owner is still |
11343 | valid, as delete_breakpoint frees the breakpoint | |
11344 | only after calling us. */ | |
6cb06a8c TT |
11345 | gdb_printf (_("warning: Error removing " |
11346 | "breakpoint %d\n"), | |
11347 | old_loc->owner->number); | |
20874c92 | 11348 | } |
d8de7963 | 11349 | removed = true; |
20874c92 | 11350 | } |
0d381245 | 11351 | } |
74960c60 VP |
11352 | |
11353 | if (!found_object) | |
1c5cfe86 | 11354 | { |
fbea99ea | 11355 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11356 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11357 | { |
db82e815 PA |
11358 | /* This location was removed from the target. In |
11359 | non-stop mode, a race condition is possible where | |
11360 | we've removed a breakpoint, but stop events for that | |
11361 | breakpoint are already queued and will arrive later. | |
11362 | We apply an heuristic to be able to distinguish such | |
11363 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11364 | breakpoint location for a bit, and will retire it | |
11365 | after we see some number of events. The theory here | |
11366 | is that reporting of events should, "on the average", | |
11367 | be fair, so after a while we'll see events from all | |
11368 | threads that have anything of interest, and no longer | |
11369 | need to keep this breakpoint location around. We | |
11370 | don't hold locations forever so to reduce chances of | |
11371 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11372 | SIGTRAP. | |
11373 | ||
11374 | The heuristic failing can be disastrous on | |
11375 | decr_pc_after_break targets. | |
11376 | ||
11377 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11378 | if we fail to recognize a late breakpoint SIGTRAP, | |
11379 | because events_till_retirement has reached 0 too | |
11380 | soon, we'll fail to do the PC adjustment, and report | |
11381 | a random SIGTRAP to the user. When the user resumes | |
11382 | the inferior, it will most likely immediately crash | |
2dec564e | 11383 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11384 | corrupted, because of being resumed e.g., in the |
11385 | middle of a multi-byte instruction, or skipped a | |
11386 | one-byte instruction. This was actually seen happen | |
11387 | on native x86-linux, and should be less rare on | |
11388 | targets that do not support new thread events, like | |
11389 | remote, due to the heuristic depending on | |
11390 | thread_count. | |
11391 | ||
11392 | Mistaking a random SIGTRAP for a breakpoint trap | |
11393 | causes similar symptoms (PC adjustment applied when | |
11394 | it shouldn't), but then again, playing with SIGTRAPs | |
11395 | behind the debugger's back is asking for trouble. | |
11396 | ||
11397 | Since hardware watchpoint traps are always | |
11398 | distinguishable from other traps, so we don't need to | |
11399 | apply keep hardware watchpoint moribund locations | |
11400 | around. We simply always ignore hardware watchpoint | |
11401 | traps we can no longer explain. */ | |
11402 | ||
5b6d1e4f PA |
11403 | process_stratum_target *proc_target = nullptr; |
11404 | for (inferior *inf : all_inferiors ()) | |
11405 | if (inf->pspace == old_loc->pspace) | |
11406 | { | |
11407 | proc_target = inf->process_target (); | |
11408 | break; | |
11409 | } | |
11410 | if (proc_target != nullptr) | |
11411 | old_loc->events_till_retirement | |
11412 | = 3 * (thread_count (proc_target) + 1); | |
11413 | else | |
11414 | old_loc->events_till_retirement = 1; | |
876fa593 | 11415 | old_loc->owner = NULL; |
20874c92 | 11416 | |
1123588c | 11417 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11418 | } |
11419 | else | |
f431efe5 PA |
11420 | { |
11421 | old_loc->owner = NULL; | |
11422 | decref_bp_location (&old_loc); | |
11423 | } | |
20874c92 | 11424 | } |
74960c60 | 11425 | } |
1c5cfe86 | 11426 | |
348d480f PA |
11427 | /* Rescan breakpoints at the same address and section, marking the |
11428 | first one as "first" and any others as "duplicates". This is so | |
11429 | that the bpt instruction is only inserted once. If we have a | |
11430 | permanent breakpoint at the same place as BPT, make that one the | |
11431 | official one, and the rest as duplicates. Permanent breakpoints | |
11432 | are sorted first for the same address. | |
11433 | ||
11434 | Do the same for hardware watchpoints, but also considering the | |
11435 | watchpoint's type (regular/access/read) and length. */ | |
11436 | ||
11437 | bp_loc_first = NULL; | |
11438 | wp_loc_first = NULL; | |
11439 | awp_loc_first = NULL; | |
11440 | rwp_loc_first = NULL; | |
40cb8ca5 | 11441 | |
48d7020b | 11442 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11443 | { |
11444 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11445 | non-NULL. */ | |
348d480f | 11446 | struct bp_location **loc_first_p; |
43892fdf | 11447 | breakpoint *b = loc->owner; |
348d480f | 11448 | |
6f380991 | 11449 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11450 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11451 | /* Don't detect duplicate for tracepoint locations because they are |
11452 | never duplicated. See the comments in field `duplicate' of | |
11453 | `struct bp_location'. */ | |
348d480f | 11454 | || is_tracepoint (b)) |
b775012e LM |
11455 | { |
11456 | /* Clear the condition modification flag. */ | |
11457 | loc->condition_changed = condition_unchanged; | |
11458 | continue; | |
11459 | } | |
348d480f | 11460 | |
348d480f PA |
11461 | if (b->type == bp_hardware_watchpoint) |
11462 | loc_first_p = &wp_loc_first; | |
11463 | else if (b->type == bp_read_watchpoint) | |
11464 | loc_first_p = &rwp_loc_first; | |
11465 | else if (b->type == bp_access_watchpoint) | |
11466 | loc_first_p = &awp_loc_first; | |
11467 | else | |
11468 | loc_first_p = &bp_loc_first; | |
11469 | ||
11470 | if (*loc_first_p == NULL | |
11471 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11472 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11473 | { | |
11474 | *loc_first_p = loc; | |
11475 | loc->duplicate = 0; | |
b775012e LM |
11476 | |
11477 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11478 | { | |
11479 | loc->needs_update = 1; | |
11480 | /* Clear the condition modification flag. */ | |
11481 | loc->condition_changed = condition_unchanged; | |
11482 | } | |
348d480f PA |
11483 | continue; |
11484 | } | |
11485 | ||
934709f0 PW |
11486 | |
11487 | /* This and the above ensure the invariant that the first location | |
11488 | is not duplicated, and is the inserted one. | |
11489 | All following are marked as duplicated, and are not inserted. */ | |
11490 | if (loc->inserted) | |
11491 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11492 | loc->duplicate = 1; |
11493 | ||
b775012e LM |
11494 | /* Clear the condition modification flag. */ |
11495 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11496 | } |
11497 | ||
a25a5a45 | 11498 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11499 | { |
04086b45 | 11500 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11501 | insert_breakpoint_locations (); |
11502 | else | |
11503 | { | |
44702360 PA |
11504 | /* Even though the caller told us to not insert new |
11505 | locations, we may still need to update conditions on the | |
11506 | target's side of breakpoints that were already inserted | |
11507 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11508 | only update conditions for locations that are marked |
11509 | "needs_update". */ | |
11510 | update_inserted_breakpoint_locations (); | |
11511 | } | |
11512 | } | |
348d480f | 11513 | |
04086b45 | 11514 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11515 | download_tracepoint_locations (); |
348d480f PA |
11516 | } |
11517 | ||
11518 | void | |
11519 | breakpoint_retire_moribund (void) | |
11520 | { | |
1123588c TT |
11521 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11522 | { | |
11523 | struct bp_location *loc = moribund_locations[ix]; | |
11524 | if (--(loc->events_till_retirement) == 0) | |
11525 | { | |
11526 | decref_bp_location (&loc); | |
11527 | unordered_remove (moribund_locations, ix); | |
11528 | --ix; | |
11529 | } | |
11530 | } | |
348d480f PA |
11531 | } |
11532 | ||
11533 | static void | |
44702360 | 11534 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11535 | { |
348d480f | 11536 | |
a70b8144 | 11537 | try |
492d29ea PA |
11538 | { |
11539 | update_global_location_list (insert_mode); | |
11540 | } | |
230d2906 | 11541 | catch (const gdb_exception_error &e) |
492d29ea PA |
11542 | { |
11543 | } | |
348d480f PA |
11544 | } |
11545 | ||
11546 | /* Clear BKP from a BPS. */ | |
11547 | ||
11548 | static void | |
313f3b21 | 11549 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11550 | { |
313f3b21 | 11551 | bpstat *bs; |
348d480f PA |
11552 | |
11553 | for (bs = bps; bs; bs = bs->next) | |
11554 | if (bs->breakpoint_at == bpt) | |
11555 | { | |
11556 | bs->breakpoint_at = NULL; | |
11557 | bs->old_val = NULL; | |
11558 | /* bs->commands will be freed later. */ | |
11559 | } | |
11560 | } | |
11561 | ||
11562 | /* Callback for iterate_over_threads. */ | |
11563 | static int | |
11564 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11565 | { | |
9a3c8263 | 11566 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11567 | |
11568 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11569 | return 0; | |
11570 | } | |
11571 | ||
7987c463 | 11572 | /* See breakpoint.h. */ |
348d480f | 11573 | |
7987c463 TT |
11574 | void |
11575 | code_breakpoint::say_where () const | |
348d480f PA |
11576 | { |
11577 | struct value_print_options opts; | |
11578 | ||
11579 | get_user_print_options (&opts); | |
11580 | ||
11581 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11582 | single string. */ | |
7987c463 | 11583 | if (loc == NULL) |
348d480f | 11584 | { |
f00aae0f | 11585 | /* For pending locations, the output differs slightly based |
7987c463 | 11586 | on extra_string. If this is non-NULL, it contains either |
f00aae0f | 11587 | a condition or dprintf arguments. */ |
7987c463 | 11588 | if (extra_string == NULL) |
f00aae0f | 11589 | { |
7987c463 | 11590 | gdb_printf (_(" (%s) pending."), locspec->to_string ()); |
f00aae0f | 11591 | } |
7987c463 | 11592 | else if (type == bp_dprintf) |
f00aae0f | 11593 | { |
6cb06a8c | 11594 | gdb_printf (_(" (%s,%s) pending."), |
7987c463 TT |
11595 | locspec->to_string (), |
11596 | extra_string.get ()); | |
f00aae0f KS |
11597 | } |
11598 | else | |
11599 | { | |
6cb06a8c | 11600 | gdb_printf (_(" (%s %s) pending."), |
7987c463 TT |
11601 | locspec->to_string (), |
11602 | extra_string.get ()); | |
f00aae0f | 11603 | } |
348d480f PA |
11604 | } |
11605 | else | |
11606 | { | |
7987c463 | 11607 | if (opts.addressprint || loc->symtab == NULL) |
6cb06a8c TT |
11608 | gdb_printf (" at %ps", |
11609 | styled_string (address_style.style (), | |
7987c463 TT |
11610 | paddress (loc->gdbarch, |
11611 | loc->address))); | |
11612 | if (loc->symtab != NULL) | |
f8eba3c6 TT |
11613 | { |
11614 | /* If there is a single location, we can print the location | |
11615 | more nicely. */ | |
7987c463 | 11616 | if (loc->next == NULL) |
0bb296cb | 11617 | { |
6a831f06 | 11618 | const char *filename |
7987c463 | 11619 | = symtab_to_filename_for_display (loc->symtab); |
6cb06a8c TT |
11620 | gdb_printf (": file %ps, line %d.", |
11621 | styled_string (file_name_style.style (), | |
11622 | filename), | |
7987c463 | 11623 | loc->line_number); |
0bb296cb | 11624 | } |
f8eba3c6 TT |
11625 | else |
11626 | /* This is not ideal, but each location may have a | |
11627 | different file name, and this at least reflects the | |
11628 | real situation somewhat. */ | |
7987c463 | 11629 | gdb_printf (": %s.", locspec->to_string ()); |
f8eba3c6 | 11630 | } |
348d480f | 11631 | |
7987c463 | 11632 | if (loc->next) |
348d480f | 11633 | { |
066620dc | 11634 | struct bp_location *iter = loc; |
348d480f | 11635 | int n = 0; |
066620dc | 11636 | for (; iter; iter = iter->next) |
348d480f | 11637 | ++n; |
6cb06a8c | 11638 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11639 | } |
11640 | } | |
11641 | } | |
11642 | ||
40cb8ca5 SM |
11643 | /* See breakpoint.h. */ |
11644 | ||
a67bcaba | 11645 | bp_location_range breakpoint::locations () const |
40cb8ca5 | 11646 | { |
9be25986 | 11647 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11648 | } |
11649 | ||
4c6a92b1 TT |
11650 | struct bp_location * |
11651 | breakpoint::allocate_location () | |
11652 | { | |
11653 | return new bp_location (this); | |
11654 | } | |
11655 | ||
2060206e PA |
11656 | #define internal_error_pure_virtual_called() \ |
11657 | gdb_assert_not_reached ("pure virtual function called") | |
11658 | ||
4c6a92b1 TT |
11659 | int |
11660 | breakpoint::insert_location (struct bp_location *bl) | |
11661 | { | |
11662 | internal_error_pure_virtual_called (); | |
11663 | } | |
11664 | ||
4c6a92b1 TT |
11665 | int |
11666 | breakpoint::remove_location (struct bp_location *bl, | |
11667 | enum remove_bp_reason reason) | |
11668 | { | |
11669 | internal_error_pure_virtual_called (); | |
11670 | } | |
11671 | ||
4c6a92b1 TT |
11672 | int |
11673 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11674 | const address_space *aspace, | |
11675 | CORE_ADDR bp_addr, | |
11676 | const target_waitstatus &ws) | |
11677 | { | |
11678 | internal_error_pure_virtual_called (); | |
11679 | } | |
11680 | ||
4c6a92b1 TT |
11681 | int |
11682 | breakpoint::resources_needed (const struct bp_location *bl) | |
11683 | { | |
11684 | internal_error_pure_virtual_called (); | |
11685 | } | |
11686 | ||
4c6a92b1 | 11687 | enum print_stop_action |
7bd86313 | 11688 | breakpoint::print_it (const bpstat *bs) const |
4c6a92b1 TT |
11689 | { |
11690 | internal_error_pure_virtual_called (); | |
11691 | } | |
11692 | ||
4c6a92b1 | 11693 | void |
b713485d | 11694 | breakpoint::print_mention () const |
4c6a92b1 TT |
11695 | { |
11696 | internal_error_pure_virtual_called (); | |
11697 | } | |
11698 | ||
4c6a92b1 | 11699 | void |
4d1ae558 | 11700 | breakpoint::print_recreate (struct ui_file *fp) const |
4c6a92b1 TT |
11701 | { |
11702 | internal_error_pure_virtual_called (); | |
11703 | } | |
11704 | ||
2060206e PA |
11705 | /* Default breakpoint_ops methods. */ |
11706 | ||
2b5ab5b8 | 11707 | void |
74421c0b | 11708 | code_breakpoint::re_set () |
348d480f | 11709 | { |
06edf0c0 | 11710 | /* FIXME: is this still reachable? */ |
264f9890 | 11711 | if (breakpoint_location_spec_empty_p (this)) |
06edf0c0 | 11712 | { |
f00aae0f | 11713 | /* Anything without a location can't be re-set. */ |
2b5ab5b8 | 11714 | delete_breakpoint (this); |
06edf0c0 | 11715 | return; |
348d480f | 11716 | } |
06edf0c0 | 11717 | |
b3d5660a | 11718 | re_set_default (); |
348d480f PA |
11719 | } |
11720 | ||
2b5ab5b8 | 11721 | int |
74421c0b | 11722 | code_breakpoint::insert_location (struct bp_location *bl) |
348d480f | 11723 | { |
cd6c3b4f YQ |
11724 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11725 | ||
579c6ad9 | 11726 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11727 | bl->target_info.placed_address = addr; |
11728 | ||
5d926615 | 11729 | int result; |
348d480f | 11730 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
5d926615 | 11731 | result = target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11732 | else |
5d926615 TT |
11733 | result = target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
11734 | ||
11735 | if (result == 0 && bl->probe.prob != nullptr) | |
11736 | { | |
11737 | /* The insertion was successful, now let's set the probe's semaphore | |
11738 | if needed. */ | |
11739 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); | |
11740 | } | |
11741 | ||
11742 | return result; | |
348d480f PA |
11743 | } |
11744 | ||
2b5ab5b8 | 11745 | int |
74421c0b | 11746 | code_breakpoint::remove_location (struct bp_location *bl, |
2b5ab5b8 | 11747 | enum remove_bp_reason reason) |
348d480f | 11748 | { |
5d926615 TT |
11749 | if (bl->probe.prob != nullptr) |
11750 | { | |
11751 | /* Let's clear the semaphore before removing the location. */ | |
11752 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); | |
11753 | } | |
11754 | ||
348d480f PA |
11755 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
11756 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11757 | else | |
73971819 | 11758 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11759 | } |
11760 | ||
2b5ab5b8 | 11761 | int |
74421c0b | 11762 | code_breakpoint::breakpoint_hit (const struct bp_location *bl, |
2b5ab5b8 TT |
11763 | const address_space *aspace, |
11764 | CORE_ADDR bp_addr, | |
11765 | const target_waitstatus &ws) | |
348d480f | 11766 | { |
c272a98c SM |
11767 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11768 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11769 | return 0; |
11770 | ||
348d480f PA |
11771 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11772 | aspace, bp_addr)) | |
11773 | return 0; | |
11774 | ||
11775 | if (overlay_debugging /* unmapped overlay section */ | |
11776 | && section_is_overlay (bl->section) | |
11777 | && !section_is_mapped (bl->section)) | |
11778 | return 0; | |
11779 | ||
11780 | return 1; | |
11781 | } | |
11782 | ||
f293a0b5 TT |
11783 | int |
11784 | dprintf_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11785 | const address_space *aspace, | |
11786 | CORE_ADDR bp_addr, | |
11787 | const target_waitstatus &ws) | |
cd1608cc PA |
11788 | { |
11789 | if (dprintf_style == dprintf_style_agent | |
11790 | && target_can_run_breakpoint_commands ()) | |
11791 | { | |
11792 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11793 | for this address it must be for a breakpoint that happens to | |
11794 | be set at the same address. */ | |
11795 | return 0; | |
11796 | } | |
11797 | ||
f293a0b5 | 11798 | return this->ordinary_breakpoint::breakpoint_hit (bl, aspace, bp_addr, ws); |
cd1608cc PA |
11799 | } |
11800 | ||
7dd8e7ae TT |
11801 | int |
11802 | ordinary_breakpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 11803 | { |
7dd8e7ae | 11804 | gdb_assert (type == bp_hardware_breakpoint); |
348d480f PA |
11805 | |
11806 | return 1; | |
11807 | } | |
11808 | ||
7dd8e7ae | 11809 | enum print_stop_action |
7bd86313 | 11810 | ordinary_breakpoint::print_it (const bpstat *bs) const |
348d480f | 11811 | { |
348d480f | 11812 | const struct bp_location *bl; |
001c8c33 | 11813 | int bp_temp; |
79a45e25 | 11814 | struct ui_out *uiout = current_uiout; |
348d480f | 11815 | |
b6433ede | 11816 | bl = bs->bp_location_at.get (); |
348d480f | 11817 | |
7dd8e7ae | 11818 | bp_temp = disposition == disp_del; |
001c8c33 PA |
11819 | if (bl->address != bl->requested_address) |
11820 | breakpoint_adjustment_warning (bl->requested_address, | |
11821 | bl->address, | |
d8de7963 | 11822 | number, true); |
7dd8e7ae | 11823 | annotate_breakpoint (number); |
f303dbd6 PA |
11824 | maybe_print_thread_hit_breakpoint (uiout); |
11825 | ||
112e8700 | 11826 | if (uiout->is_mi_like_p ()) |
348d480f | 11827 | { |
112e8700 | 11828 | uiout->field_string ("reason", |
001c8c33 | 11829 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
7dd8e7ae | 11830 | uiout->field_string ("disp", bpdisp_text (disposition)); |
06edf0c0 | 11831 | } |
78805ff8 | 11832 | |
6a831f06 | 11833 | if (bp_temp) |
78805ff8 | 11834 | uiout->text ("Temporary breakpoint "); |
6a831f06 | 11835 | else |
78805ff8 PW |
11836 | uiout->text ("Breakpoint "); |
11837 | print_num_locno (bs, uiout); | |
11838 | uiout->text (", "); | |
06edf0c0 | 11839 | |
001c8c33 | 11840 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11841 | } |
11842 | ||
7dd8e7ae | 11843 | void |
b713485d | 11844 | ordinary_breakpoint::print_mention () const |
06edf0c0 | 11845 | { |
112e8700 | 11846 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11847 | return; |
11848 | ||
7dd8e7ae | 11849 | switch (type) |
06edf0c0 PA |
11850 | { |
11851 | case bp_breakpoint: | |
11852 | case bp_gnu_ifunc_resolver: | |
7dd8e7ae | 11853 | if (disposition == disp_del) |
6cb06a8c | 11854 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11855 | else |
6cb06a8c | 11856 | gdb_printf (_("Breakpoint")); |
7dd8e7ae TT |
11857 | gdb_printf (_(" %d"), number); |
11858 | if (type == bp_gnu_ifunc_resolver) | |
6cb06a8c | 11859 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11860 | break; |
11861 | case bp_hardware_breakpoint: | |
7dd8e7ae | 11862 | gdb_printf (_("Hardware assisted breakpoint %d"), number); |
06edf0c0 | 11863 | break; |
e7e0cddf | 11864 | case bp_dprintf: |
7dd8e7ae | 11865 | gdb_printf (_("Dprintf %d"), number); |
e7e0cddf | 11866 | break; |
06edf0c0 PA |
11867 | } |
11868 | ||
7987c463 | 11869 | say_where (); |
06edf0c0 PA |
11870 | } |
11871 | ||
7dd8e7ae | 11872 | void |
4d1ae558 | 11873 | ordinary_breakpoint::print_recreate (struct ui_file *fp) const |
06edf0c0 | 11874 | { |
7dd8e7ae | 11875 | if (type == bp_breakpoint && disposition == disp_del) |
6cb06a8c | 11876 | gdb_printf (fp, "tbreak"); |
7dd8e7ae | 11877 | else if (type == bp_breakpoint) |
6cb06a8c | 11878 | gdb_printf (fp, "break"); |
7dd8e7ae TT |
11879 | else if (type == bp_hardware_breakpoint |
11880 | && disposition == disp_del) | |
6cb06a8c | 11881 | gdb_printf (fp, "thbreak"); |
7dd8e7ae | 11882 | else if (type == bp_hardware_breakpoint) |
6cb06a8c | 11883 | gdb_printf (fp, "hbreak"); |
06edf0c0 | 11884 | else |
f34652de | 11885 | internal_error (_("unhandled breakpoint type %d"), (int) type); |
06edf0c0 | 11886 | |
709438c7 | 11887 | gdb_printf (fp, " %s", locspec->to_string ()); |
f00aae0f KS |
11888 | |
11889 | /* Print out extra_string if this breakpoint is pending. It might | |
11890 | contain, for example, conditions that were set by the user. */ | |
7dd8e7ae TT |
11891 | if (loc == NULL && extra_string != NULL) |
11892 | gdb_printf (fp, " %s", extra_string.get ()); | |
f00aae0f | 11893 | |
04d0163c | 11894 | print_recreate_thread (fp); |
06edf0c0 PA |
11895 | } |
11896 | ||
2b5ab5b8 | 11897 | std::vector<symtab_and_line> |
264f9890 PA |
11898 | code_breakpoint::decode_location_spec (location_spec *locspec, |
11899 | program_space *search_pspace) | |
983af33b | 11900 | { |
7464aeaa | 11901 | if (locspec->type () == PROBE_LOCATION_SPEC) |
264f9890 | 11902 | return bkpt_probe_decode_location_spec (this, locspec, search_pspace); |
5d926615 | 11903 | |
8f5bc641 TT |
11904 | struct linespec_result canonical; |
11905 | ||
11906 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, search_pspace, | |
11907 | NULL, 0, &canonical, multiple_symbols_all, | |
11908 | filter.get ()); | |
11909 | ||
11910 | /* We should get 0 or 1 resulting SALs. */ | |
11911 | gdb_assert (canonical.lsals.size () < 2); | |
11912 | ||
11913 | if (!canonical.lsals.empty ()) | |
11914 | { | |
11915 | const linespec_sals &lsal = canonical.lsals[0]; | |
11916 | return std::move (lsal.sals); | |
11917 | } | |
11918 | return {}; | |
983af33b SDJ |
11919 | } |
11920 | ||
06edf0c0 PA |
11921 | /* Virtual table for internal breakpoints. */ |
11922 | ||
c359fff5 TT |
11923 | void |
11924 | internal_breakpoint::re_set () | |
06edf0c0 | 11925 | { |
c359fff5 | 11926 | switch (type) |
06edf0c0 PA |
11927 | { |
11928 | /* Delete overlay event and longjmp master breakpoints; they | |
11929 | will be reset later by breakpoint_re_set. */ | |
11930 | case bp_overlay_event: | |
11931 | case bp_longjmp_master: | |
11932 | case bp_std_terminate_master: | |
11933 | case bp_exception_master: | |
c359fff5 | 11934 | delete_breakpoint (this); |
06edf0c0 PA |
11935 | break; |
11936 | ||
11937 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11938 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11939 | case bp_shlib_event: |
11940 | ||
11941 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11942 | it is set up, we do not want to touch it. */ | |
11943 | case bp_thread_event: | |
11944 | break; | |
11945 | } | |
11946 | } | |
11947 | ||
c359fff5 TT |
11948 | void |
11949 | internal_breakpoint::check_status (bpstat *bs) | |
06edf0c0 | 11950 | { |
c359fff5 | 11951 | if (type == bp_shlib_event) |
a9b3a50f PA |
11952 | { |
11953 | /* If requested, stop when the dynamic linker notifies GDB of | |
11954 | events. This allows the user to get control and place | |
11955 | breakpoints in initializer routines for dynamically loaded | |
11956 | objects (among other things). */ | |
4ec2227a TT |
11957 | bs->stop = stop_on_solib_events != 0; |
11958 | bs->print = stop_on_solib_events != 0; | |
a9b3a50f PA |
11959 | } |
11960 | else | |
4ec2227a | 11961 | bs->stop = false; |
06edf0c0 PA |
11962 | } |
11963 | ||
c359fff5 | 11964 | enum print_stop_action |
7bd86313 | 11965 | internal_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11966 | { |
c359fff5 | 11967 | switch (type) |
06edf0c0 | 11968 | { |
348d480f PA |
11969 | case bp_shlib_event: |
11970 | /* Did we stop because the user set the stop_on_solib_events | |
11971 | variable? (If so, we report this as a generic, "Stopped due | |
11972 | to shlib event" message.) */ | |
4e9e993a | 11973 | print_solib_event (false); |
348d480f PA |
11974 | break; |
11975 | ||
11976 | case bp_thread_event: | |
11977 | /* Not sure how we will get here. | |
11978 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11979 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11980 | break; |
11981 | ||
11982 | case bp_overlay_event: | |
11983 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11984 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11985 | break; |
11986 | ||
11987 | case bp_longjmp_master: | |
11988 | /* These should never be enabled. */ | |
6cb06a8c | 11989 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11990 | break; |
11991 | ||
11992 | case bp_std_terminate_master: | |
11993 | /* These should never be enabled. */ | |
6cb06a8c TT |
11994 | gdb_printf (_("std::terminate Master Breakpoint: " |
11995 | "gdb should not stop!\n")); | |
348d480f PA |
11996 | break; |
11997 | ||
11998 | case bp_exception_master: | |
11999 | /* These should never be enabled. */ | |
6cb06a8c TT |
12000 | gdb_printf (_("Exception Master Breakpoint: " |
12001 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12002 | break; |
12003 | } | |
12004 | ||
001c8c33 | 12005 | return PRINT_NOTHING; |
06edf0c0 PA |
12006 | } |
12007 | ||
c359fff5 | 12008 | void |
b713485d | 12009 | internal_breakpoint::print_mention () const |
06edf0c0 PA |
12010 | { |
12011 | /* Nothing to mention. These breakpoints are internal. */ | |
12012 | } | |
12013 | ||
06edf0c0 PA |
12014 | /* Virtual table for momentary breakpoints */ |
12015 | ||
1fd30a47 TT |
12016 | void |
12017 | momentary_breakpoint::re_set () | |
06edf0c0 PA |
12018 | { |
12019 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12020 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12021 | Otherwise these should have been blown away via the cleanup chain |
12022 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12023 | } | |
12024 | ||
1fd30a47 TT |
12025 | void |
12026 | momentary_breakpoint::check_status (bpstat *bs) | |
06edf0c0 PA |
12027 | { |
12028 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12029 | } | |
12030 | ||
1fd30a47 | 12031 | enum print_stop_action |
7bd86313 | 12032 | momentary_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 12033 | { |
001c8c33 | 12034 | return PRINT_UNKNOWN; |
348d480f PA |
12035 | } |
12036 | ||
1fd30a47 | 12037 | void |
b713485d | 12038 | momentary_breakpoint::print_mention () const |
348d480f | 12039 | { |
06edf0c0 | 12040 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12041 | } |
12042 | ||
e2e4d78b JK |
12043 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12044 | ||
12045 | It gets cleared already on the removal of the first one of such placed | |
12046 | breakpoints. This is OK as they get all removed altogether. */ | |
12047 | ||
c1fc2657 | 12048 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12049 | { |
c1fc2657 | 12050 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12051 | |
c1fc2657 | 12052 | if (tp != NULL) |
e2e4d78b | 12053 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12054 | } |
12055 | ||
55aa24fb | 12056 | static void |
264f9890 PA |
12057 | bkpt_probe_create_sals_from_location_spec (location_spec *locspec, |
12058 | struct linespec_result *canonical) | |
03ada39e | 12059 | |
55aa24fb SDJ |
12060 | { |
12061 | struct linespec_sals lsal; | |
12062 | ||
264f9890 | 12063 | lsal.sals = parse_probes (locspec, NULL, canonical); |
709438c7 | 12064 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 12065 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12066 | } |
12067 | ||
6c5b2ebe | 12068 | static std::vector<symtab_and_line> |
264f9890 PA |
12069 | bkpt_probe_decode_location_spec (struct breakpoint *b, |
12070 | location_spec *locspec, | |
12071 | program_space *search_pspace) | |
55aa24fb | 12072 | { |
264f9890 PA |
12073 | std::vector<symtab_and_line> sals |
12074 | = parse_probes (locspec, search_pspace, NULL); | |
6c5b2ebe | 12075 | if (sals.empty ()) |
55aa24fb | 12076 | error (_("probe not found")); |
6c5b2ebe | 12077 | return sals; |
55aa24fb SDJ |
12078 | } |
12079 | ||
779dcceb TT |
12080 | int |
12081 | tracepoint::breakpoint_hit (const struct bp_location *bl, | |
12082 | const address_space *aspace, CORE_ADDR bp_addr, | |
12083 | const target_waitstatus &ws) | |
348d480f PA |
12084 | { |
12085 | /* By definition, the inferior does not report stops at | |
12086 | tracepoints. */ | |
12087 | return 0; | |
74960c60 VP |
12088 | } |
12089 | ||
779dcceb TT |
12090 | void |
12091 | tracepoint::print_one_detail (struct ui_out *uiout) const | |
74960c60 | 12092 | { |
779dcceb | 12093 | if (!static_trace_marker_id.empty ()) |
348d480f | 12094 | { |
7b572efb TT |
12095 | gdb_assert (type == bp_static_tracepoint |
12096 | || type == bp_static_marker_tracepoint); | |
cc59ec59 | 12097 | |
6a831f06 PA |
12098 | uiout->message ("\tmarker id is %pF\n", |
12099 | string_field ("static-tracepoint-marker-string-id", | |
779dcceb | 12100 | static_trace_marker_id.c_str ())); |
348d480f | 12101 | } |
0d381245 VP |
12102 | } |
12103 | ||
779dcceb | 12104 | void |
b713485d | 12105 | tracepoint::print_mention () const |
a474d7c2 | 12106 | { |
112e8700 | 12107 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12108 | return; |
cc59ec59 | 12109 | |
779dcceb | 12110 | switch (type) |
348d480f PA |
12111 | { |
12112 | case bp_tracepoint: | |
6cb06a8c | 12113 | gdb_printf (_("Tracepoint")); |
779dcceb | 12114 | gdb_printf (_(" %d"), number); |
348d480f PA |
12115 | break; |
12116 | case bp_fast_tracepoint: | |
6cb06a8c | 12117 | gdb_printf (_("Fast tracepoint")); |
779dcceb | 12118 | gdb_printf (_(" %d"), number); |
348d480f PA |
12119 | break; |
12120 | case bp_static_tracepoint: | |
7b572efb | 12121 | case bp_static_marker_tracepoint: |
6cb06a8c | 12122 | gdb_printf (_("Static tracepoint")); |
779dcceb | 12123 | gdb_printf (_(" %d"), number); |
348d480f PA |
12124 | break; |
12125 | default: | |
f34652de | 12126 | internal_error (_("unhandled tracepoint type %d"), (int) type); |
348d480f PA |
12127 | } |
12128 | ||
7987c463 | 12129 | say_where (); |
a474d7c2 PA |
12130 | } |
12131 | ||
779dcceb | 12132 | void |
4d1ae558 | 12133 | tracepoint::print_recreate (struct ui_file *fp) const |
a474d7c2 | 12134 | { |
779dcceb | 12135 | if (type == bp_fast_tracepoint) |
6cb06a8c | 12136 | gdb_printf (fp, "ftrace"); |
7b572efb TT |
12137 | else if (type == bp_static_tracepoint |
12138 | || type == bp_static_marker_tracepoint) | |
6cb06a8c | 12139 | gdb_printf (fp, "strace"); |
779dcceb | 12140 | else if (type == bp_tracepoint) |
6cb06a8c | 12141 | gdb_printf (fp, "trace"); |
348d480f | 12142 | else |
f34652de | 12143 | internal_error (_("unhandled tracepoint type %d"), (int) type); |
cc59ec59 | 12144 | |
709438c7 | 12145 | gdb_printf (fp, " %s", locspec->to_string ()); |
04d0163c | 12146 | print_recreate_thread (fp); |
d9b3f62e | 12147 | |
779dcceb TT |
12148 | if (pass_count) |
12149 | gdb_printf (fp, " passcount %d\n", pass_count); | |
a474d7c2 PA |
12150 | } |
12151 | ||
bac7c5cf | 12152 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12153 | |
12154 | static void | |
264f9890 PA |
12155 | tracepoint_probe_create_sals_from_location_spec |
12156 | (location_spec *locspec, | |
03ada39e | 12157 | struct linespec_result *canonical) |
55aa24fb SDJ |
12158 | { |
12159 | /* We use the same method for breakpoint on probes. */ | |
264f9890 | 12160 | bkpt_probe_create_sals_from_location_spec (locspec, canonical); |
55aa24fb SDJ |
12161 | } |
12162 | ||
f293a0b5 TT |
12163 | void |
12164 | dprintf_breakpoint::re_set () | |
5c2b4418 | 12165 | { |
b3d5660a | 12166 | re_set_default (); |
5c2b4418 | 12167 | |
f00aae0f | 12168 | /* extra_string should never be non-NULL for dprintf. */ |
f293a0b5 | 12169 | gdb_assert (extra_string != NULL); |
5c2b4418 HZ |
12170 | |
12171 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12172 | 2 - create a dprintf, which resolves fine. | |
12173 | 3 - disconnect from target 1 | |
12174 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12175 | ||
12176 | After steps #3/#4, you'll want the dprintf command list to | |
12177 | be updated, because target 1 and 2 may well return different | |
12178 | answers for target_can_run_breakpoint_commands(). | |
12179 | Given absence of finer grained resetting, we get to do | |
12180 | it all the time. */ | |
f293a0b5 TT |
12181 | if (extra_string != NULL) |
12182 | update_dprintf_command_list (this); | |
5c2b4418 HZ |
12183 | } |
12184 | ||
f293a0b5 | 12185 | /* Implement the "print_recreate" method for dprintf. */ |
2d9442cc | 12186 | |
f293a0b5 | 12187 | void |
4d1ae558 | 12188 | dprintf_breakpoint::print_recreate (struct ui_file *fp) const |
2d9442cc | 12189 | { |
709438c7 | 12190 | gdb_printf (fp, "dprintf %s,%s", locspec->to_string (), extra_string.get ()); |
04d0163c | 12191 | print_recreate_thread (fp); |
2d9442cc HZ |
12192 | } |
12193 | ||
f293a0b5 | 12194 | /* Implement the "after_condition_true" method for dprintf. |
9d6e6e84 HZ |
12195 | |
12196 | dprintf's are implemented with regular commands in their command | |
12197 | list, but we run the commands here instead of before presenting the | |
12198 | stop to the user, as dprintf's don't actually cause a stop. This | |
12199 | also makes it so that the commands of multiple dprintfs at the same | |
12200 | address are all handled. */ | |
12201 | ||
f293a0b5 TT |
12202 | void |
12203 | dprintf_breakpoint::after_condition_true (struct bpstat *bs) | |
9d6e6e84 | 12204 | { |
9d6e6e84 HZ |
12205 | /* dprintf's never cause a stop. This wasn't set in the |
12206 | check_status hook instead because that would make the dprintf's | |
12207 | condition not be evaluated. */ | |
4ec2227a | 12208 | bs->stop = false; |
9d6e6e84 HZ |
12209 | |
12210 | /* Run the command list here. Take ownership of it instead of | |
12211 | copying. We never want these commands to run later in | |
12212 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12213 | be set at same address as this dprintf, or even if running the | |
12214 | commands here throws. */ | |
9c95aea1 KB |
12215 | counted_command_line cmds = std::move (bs->commands); |
12216 | gdb_assert (cmds != nullptr); | |
12217 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
12218 | } |
12219 | ||
983af33b SDJ |
12220 | /* The breakpoint_ops structure to be used on static tracepoints with |
12221 | markers (`-m'). */ | |
12222 | ||
12223 | static void | |
264f9890 PA |
12224 | strace_marker_create_sals_from_location_spec (location_spec *locspec, |
12225 | struct linespec_result *canonical) | |
983af33b SDJ |
12226 | { |
12227 | struct linespec_sals lsal; | |
f00aae0f | 12228 | const char *arg_start, *arg; |
983af33b | 12229 | |
40d97ee2 | 12230 | arg = arg_start = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 12231 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12232 | |
f2fc3015 TT |
12233 | std::string str (arg_start, arg - arg_start); |
12234 | const char *ptr = str.c_str (); | |
264f9890 PA |
12235 | canonical->locspec |
12236 | = new_linespec_location_spec (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12237 | |
709438c7 | 12238 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 12239 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12240 | } |
12241 | ||
12242 | static void | |
12243 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12244 | struct linespec_result *canonical, | |
e1e01040 PA |
12245 | gdb::unique_xmalloc_ptr<char> cond_string, |
12246 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12247 | enum bptype type_wanted, |
12248 | enum bpdisp disposition, | |
12249 | int thread, | |
12250 | int task, int ignore_count, | |
983af33b | 12251 | int from_tty, int enabled, |
44f238bb | 12252 | int internal, unsigned flags) |
983af33b | 12253 | { |
6c5b2ebe | 12254 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12255 | |
12256 | /* If the user is creating a static tracepoint by marker id | |
12257 | (strace -m MARKER_ID), then store the sals index, so that | |
12258 | breakpoint_re_set can try to match up which of the newly | |
12259 | found markers corresponds to this one, and, don't try to | |
12260 | expand multiple locations for each sal, given than SALS | |
12261 | already should contain all sals for MARKER_ID. */ | |
12262 | ||
6c5b2ebe | 12263 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12264 | { |
5c1ddcb6 | 12265 | location_spec_up locspec = canonical->locspec->clone (); |
983af33b | 12266 | |
3b003a61 PA |
12267 | std::unique_ptr<tracepoint> tp |
12268 | (new tracepoint (gdbarch, | |
12269 | type_wanted, | |
12270 | lsal.sals[i], | |
264f9890 | 12271 | std::move (locspec), |
3b003a61 PA |
12272 | NULL, |
12273 | std::move (cond_string), | |
12274 | std::move (extra_string), | |
12275 | disposition, | |
12276 | thread, task, ignore_count, | |
12277 | from_tty, enabled, flags, | |
12278 | canonical->special_display)); | |
12279 | ||
983af33b SDJ |
12280 | /* Given that its possible to have multiple markers with |
12281 | the same string id, if the user is creating a static | |
12282 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12283 | store the sals index, so that breakpoint_re_set can | |
12284 | try to match up which of the newly found markers | |
12285 | corresponds to this one */ | |
12286 | tp->static_trace_marker_id_idx = i; | |
12287 | ||
b270e6f9 | 12288 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12289 | } |
12290 | } | |
12291 | ||
6d7a8c56 | 12292 | std::vector<symtab_and_line> |
264f9890 PA |
12293 | static_marker_tracepoint::decode_location_spec (location_spec *locspec, |
12294 | program_space *search_pspace) | |
983af33b | 12295 | { |
40d97ee2 | 12296 | const char *s = as_linespec_location_spec (locspec)->spec_string; |
983af33b | 12297 | |
6c5b2ebe | 12298 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
6d7a8c56 | 12299 | if (sals.size () > static_trace_marker_id_idx) |
983af33b | 12300 | { |
6d7a8c56 | 12301 | sals[0] = sals[static_trace_marker_id_idx]; |
6c5b2ebe PA |
12302 | sals.resize (1); |
12303 | return sals; | |
983af33b SDJ |
12304 | } |
12305 | else | |
6d7a8c56 | 12306 | error (_("marker %s not found"), static_trace_marker_id.c_str ()); |
983af33b SDJ |
12307 | } |
12308 | ||
8613a476 TT |
12309 | /* Static tracepoints with marker (`-m'). */ |
12310 | static struct breakpoint_ops strace_marker_breakpoint_ops = | |
12311 | { | |
264f9890 | 12312 | strace_marker_create_sals_from_location_spec, |
8613a476 TT |
12313 | strace_marker_create_breakpoints_sal, |
12314 | }; | |
983af33b | 12315 | |
d8de7963 | 12316 | static bool |
983af33b SDJ |
12317 | strace_marker_p (struct breakpoint *b) |
12318 | { | |
7b572efb | 12319 | return b->type == bp_static_marker_tracepoint; |
983af33b SDJ |
12320 | } |
12321 | ||
53a5351d | 12322 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12323 | structures. */ |
c906108c SS |
12324 | |
12325 | void | |
fba45db2 | 12326 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12327 | { |
8a3fe4f8 | 12328 | gdb_assert (bpt != NULL); |
c906108c | 12329 | |
4a64f543 MS |
12330 | /* Has this bp already been deleted? This can happen because |
12331 | multiple lists can hold pointers to bp's. bpstat lists are | |
12332 | especial culprits. | |
12333 | ||
12334 | One example of this happening is a watchpoint's scope bp. When | |
12335 | the scope bp triggers, we notice that the watchpoint is out of | |
12336 | scope, and delete it. We also delete its scope bp. But the | |
12337 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12338 | That bpstat is then checked for auto-deleting bp's, which are | |
12339 | deleted. | |
12340 | ||
12341 | A real solution to this problem might involve reference counts in | |
12342 | bp's, and/or giving them pointers back to their referencing | |
12343 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12344 | storage when no more references were extent. A cheaper bandaid | |
12345 | was chosen. */ | |
c906108c SS |
12346 | if (bpt->type == bp_none) |
12347 | return; | |
12348 | ||
4a64f543 MS |
12349 | /* At least avoid this stale reference until the reference counting |
12350 | of breakpoints gets resolved. */ | |
d0fb5eae | 12351 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12352 | { |
d0fb5eae | 12353 | struct breakpoint *related; |
3a5c3e22 | 12354 | struct watchpoint *w; |
d0fb5eae JK |
12355 | |
12356 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12357 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12358 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12359 | w = (struct watchpoint *) bpt; |
12360 | else | |
12361 | w = NULL; | |
12362 | if (w != NULL) | |
12363 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12364 | |
12365 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12366 | for (related = bpt; related->related_breakpoint != bpt; | |
12367 | related = related->related_breakpoint); | |
12368 | related->related_breakpoint = bpt->related_breakpoint; | |
12369 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12370 | } |
12371 | ||
a9634178 TJB |
12372 | /* watch_command_1 creates a watchpoint but only sets its number if |
12373 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12374 | a problem in that process, we'll be asked to delete the half-created | |
12375 | watchpoint. In that case, don't announce the deletion. */ | |
12376 | if (bpt->number) | |
76727919 | 12377 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12378 | |
c906108c SS |
12379 | if (breakpoint_chain == bpt) |
12380 | breakpoint_chain = bpt->next; | |
12381 | ||
43892fdf | 12382 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12383 | if (b->next == bpt) |
01add95b SM |
12384 | { |
12385 | b->next = bpt->next; | |
12386 | break; | |
12387 | } | |
c906108c | 12388 | |
f431efe5 PA |
12389 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12390 | been freed. */ | |
12391 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12392 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12393 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12394 | commands are associated with the bpstat; if we remove it here, | |
12395 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12396 | event-top.c won't do anything, and temporary breakpoints with | |
12397 | commands won't work. */ | |
12398 | ||
12399 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12400 | ||
4a64f543 MS |
12401 | /* Now that breakpoint is removed from breakpoint list, update the |
12402 | global location list. This will remove locations that used to | |
12403 | belong to this breakpoint. Do this before freeing the breakpoint | |
12404 | itself, since remove_breakpoint looks at location's owner. It | |
12405 | might be better design to have location completely | |
12406 | self-contained, but it's not the case now. */ | |
44702360 | 12407 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12408 | |
4a64f543 MS |
12409 | /* On the chance that someone will soon try again to delete this |
12410 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12411 | bpt->type = bp_none; |
4d01a485 | 12412 | delete bpt; |
c906108c SS |
12413 | } |
12414 | ||
51be5b68 PA |
12415 | /* Iterator function to call a user-provided callback function once |
12416 | for each of B and its related breakpoints. */ | |
12417 | ||
12418 | static void | |
12419 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12420 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12421 | { |
12422 | struct breakpoint *related; | |
12423 | ||
12424 | related = b; | |
12425 | do | |
12426 | { | |
12427 | struct breakpoint *next; | |
12428 | ||
12429 | /* FUNCTION may delete RELATED. */ | |
12430 | next = related->related_breakpoint; | |
12431 | ||
12432 | if (next == related) | |
12433 | { | |
12434 | /* RELATED is the last ring entry. */ | |
48649e1b | 12435 | function (related); |
51be5b68 PA |
12436 | |
12437 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12438 | B. There's nothing left to do anyway, so just break | |
12439 | out. */ | |
12440 | break; | |
12441 | } | |
12442 | else | |
48649e1b | 12443 | function (related); |
51be5b68 PA |
12444 | |
12445 | related = next; | |
12446 | } | |
12447 | while (related != b); | |
12448 | } | |
95a42b64 | 12449 | |
4495129a | 12450 | static void |
981a3fb3 | 12451 | delete_command (const char *arg, int from_tty) |
c906108c | 12452 | { |
ea9365bb TT |
12453 | dont_repeat (); |
12454 | ||
c906108c SS |
12455 | if (arg == 0) |
12456 | { | |
12457 | int breaks_to_delete = 0; | |
12458 | ||
46c6471b | 12459 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12460 | internal breakpoints, these have to be deleted with an |
12461 | explicit breakpoint number argument. */ | |
43892fdf | 12462 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12463 | if (user_breakpoint_p (b)) |
973d738b DJ |
12464 | { |
12465 | breaks_to_delete = 1; | |
12466 | break; | |
12467 | } | |
c906108c SS |
12468 | |
12469 | /* Ask user only if there are some breakpoints to delete. */ | |
12470 | if (!from_tty | |
e2e0b3e5 | 12471 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12472 | for (breakpoint *b : all_breakpoints_safe ()) |
12473 | if (user_breakpoint_p (b)) | |
12474 | delete_breakpoint (b); | |
c906108c SS |
12475 | } |
12476 | else | |
48649e1b | 12477 | map_breakpoint_numbers |
b926417a | 12478 | (arg, [&] (breakpoint *br) |
48649e1b | 12479 | { |
b926417a | 12480 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12481 | }); |
c906108c SS |
12482 | } |
12483 | ||
c2f4122d PA |
12484 | /* Return true if all locations of B bound to PSPACE are pending. If |
12485 | PSPACE is NULL, all locations of all program spaces are | |
12486 | considered. */ | |
12487 | ||
d8de7963 | 12488 | static bool |
c2f4122d | 12489 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12490 | { |
40cb8ca5 | 12491 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12492 | if ((pspace == NULL |
12493 | || loc->pspace == pspace) | |
12494 | && !loc->shlib_disabled | |
8645ff69 | 12495 | && !loc->pspace->executing_startup) |
d8de7963 AB |
12496 | return false; |
12497 | return true; | |
fe3f5fa8 VP |
12498 | } |
12499 | ||
776592bf | 12500 | /* Subroutine of update_breakpoint_locations to simplify it. |
d8de7963 | 12501 | Return true if multiple fns in list LOC have the same name. |
776592bf DE |
12502 | Null names are ignored. */ |
12503 | ||
d8de7963 | 12504 | static bool |
776592bf DE |
12505 | ambiguous_names_p (struct bp_location *loc) |
12506 | { | |
12507 | struct bp_location *l; | |
2698f5ea | 12508 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12509 | xcalloc, xfree)); |
776592bf DE |
12510 | |
12511 | for (l = loc; l != NULL; l = l->next) | |
12512 | { | |
12513 | const char **slot; | |
23d6ee64 | 12514 | const char *name = l->function_name.get (); |
776592bf DE |
12515 | |
12516 | /* Allow for some names to be NULL, ignore them. */ | |
12517 | if (name == NULL) | |
12518 | continue; | |
12519 | ||
c1fb9836 | 12520 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12521 | INSERT); |
4a64f543 MS |
12522 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12523 | returns NULL. */ | |
776592bf | 12524 | if (*slot != NULL) |
d8de7963 | 12525 | return true; |
776592bf DE |
12526 | *slot = name; |
12527 | } | |
12528 | ||
d8de7963 | 12529 | return false; |
776592bf DE |
12530 | } |
12531 | ||
0fb4aa4b PA |
12532 | /* When symbols change, it probably means the sources changed as well, |
12533 | and it might mean the static tracepoint markers are no longer at | |
12534 | the same address or line numbers they used to be at last we | |
12535 | checked. Losing your static tracepoints whenever you rebuild is | |
12536 | undesirable. This function tries to resync/rematch gdb static | |
12537 | tracepoints with the markers on the target, for static tracepoints | |
12538 | that have not been set by marker id. Static tracepoint that have | |
12539 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12540 | The heuristic is: | |
12541 | ||
12542 | 1) For a tracepoint set at a specific address, look for a marker at | |
12543 | the old PC. If one is found there, assume to be the same marker. | |
12544 | If the name / string id of the marker found is different from the | |
12545 | previous known name, assume that means the user renamed the marker | |
12546 | in the sources, and output a warning. | |
12547 | ||
12548 | 2) For a tracepoint set at a given line number, look for a marker | |
12549 | at the new address of the old line number. If one is found there, | |
12550 | assume to be the same marker. If the name / string id of the | |
12551 | marker found is different from the previous known name, assume that | |
12552 | means the user renamed the marker in the sources, and output a | |
12553 | warning. | |
12554 | ||
12555 | 3) If a marker is no longer found at the same address or line, it | |
12556 | may mean the marker no longer exists. But it may also just mean | |
12557 | the code changed a bit. Maybe the user added a few lines of code | |
12558 | that made the marker move up or down (in line number terms). Ask | |
12559 | the target for info about the marker with the string id as we knew | |
12560 | it. If found, update line number and address in the matching | |
12561 | static tracepoint. This will get confused if there's more than one | |
12562 | marker with the same ID (possible in UST, although unadvised | |
12563 | precisely because it confuses tools). */ | |
12564 | ||
12565 | static struct symtab_and_line | |
12566 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12567 | { | |
d9b3f62e | 12568 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12569 | struct static_tracepoint_marker marker; |
12570 | CORE_ADDR pc; | |
0fb4aa4b PA |
12571 | |
12572 | pc = sal.pc; | |
12573 | if (sal.line) | |
12574 | find_line_pc (sal.symtab, sal.line, &pc); | |
12575 | ||
12576 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12577 | { | |
5d9310c4 | 12578 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12579 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12580 | b->number, tp->static_trace_marker_id.c_str (), |
12581 | marker.str_id.c_str ()); | |
0fb4aa4b | 12582 | |
5d9310c4 | 12583 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12584 | |
12585 | return sal; | |
12586 | } | |
12587 | ||
12588 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12589 | by string ID. */ | |
12590 | if (!sal.explicit_pc | |
12591 | && sal.line != 0 | |
12592 | && sal.symtab != NULL | |
5d9310c4 | 12593 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12594 | { |
5d9310c4 SM |
12595 | std::vector<static_tracepoint_marker> markers |
12596 | = target_static_tracepoint_markers_by_strid | |
12597 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12598 | |
5d9310c4 | 12599 | if (!markers.empty ()) |
0fb4aa4b | 12600 | { |
0fb4aa4b | 12601 | struct symbol *sym; |
80e1d417 | 12602 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12603 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 12604 | |
5d9310c4 | 12605 | tpmarker = &markers[0]; |
0fb4aa4b | 12606 | |
5d9310c4 | 12607 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12608 | |
12609 | warning (_("marker for static tracepoint %d (%s) not " | |
12610 | "found at previous line number"), | |
5d9310c4 | 12611 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12612 | |
51abb421 | 12613 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12614 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12615 | uiout->text ("Now in "); |
0fb4aa4b PA |
12616 | if (sym) |
12617 | { | |
987012b8 | 12618 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12619 | function_name_style.style ()); |
112e8700 | 12620 | uiout->text (" at "); |
0fb4aa4b | 12621 | } |
112e8700 | 12622 | uiout->field_string ("file", |
cbe56571 | 12623 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12624 | file_name_style.style ()); |
112e8700 | 12625 | uiout->text (":"); |
0fb4aa4b | 12626 | |
112e8700 | 12627 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12628 | { |
0b0865da | 12629 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12630 | |
112e8700 | 12631 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12632 | } |
12633 | ||
381befee | 12634 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12635 | uiout->text ("\n"); |
0fb4aa4b | 12636 | |
80e1d417 | 12637 | b->loc->line_number = sal2.line; |
2f202fde | 12638 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12639 | |
40d97ee2 PA |
12640 | std::unique_ptr<explicit_location_spec> els |
12641 | (new explicit_location_spec ()); | |
12642 | els->source_filename | |
12643 | = xstrdup (symtab_to_filename_for_display (sal2.symtab)); | |
12644 | els->line_offset.offset = b->loc->line_number; | |
12645 | els->line_offset.sign = LINE_OFFSET_NONE; | |
12646 | ||
12647 | b->locspec = std::move (els); | |
0fb4aa4b PA |
12648 | |
12649 | /* Might be nice to check if function changed, and warn if | |
12650 | so. */ | |
0fb4aa4b PA |
12651 | } |
12652 | } | |
12653 | return sal; | |
12654 | } | |
12655 | ||
d8de7963 | 12656 | /* Returns true iff locations A and B are sufficiently same that |
8d3788bd VP |
12657 | we don't need to report breakpoint as changed. */ |
12658 | ||
d8de7963 | 12659 | static bool |
8d3788bd VP |
12660 | locations_are_equal (struct bp_location *a, struct bp_location *b) |
12661 | { | |
12662 | while (a && b) | |
12663 | { | |
12664 | if (a->address != b->address) | |
d8de7963 | 12665 | return false; |
8d3788bd VP |
12666 | |
12667 | if (a->shlib_disabled != b->shlib_disabled) | |
d8de7963 | 12668 | return false; |
8d3788bd VP |
12669 | |
12670 | if (a->enabled != b->enabled) | |
d8de7963 | 12671 | return false; |
8d3788bd | 12672 | |
b5fa468f | 12673 | if (a->disabled_by_cond != b->disabled_by_cond) |
d8de7963 | 12674 | return false; |
b5fa468f | 12675 | |
8d3788bd VP |
12676 | a = a->next; |
12677 | b = b->next; | |
12678 | } | |
12679 | ||
12680 | if ((a == NULL) != (b == NULL)) | |
d8de7963 | 12681 | return false; |
8d3788bd | 12682 | |
d8de7963 | 12683 | return true; |
8d3788bd VP |
12684 | } |
12685 | ||
c2f4122d PA |
12686 | /* Split all locations of B that are bound to PSPACE out of B's |
12687 | location list to a separate list and return that list's head. If | |
12688 | PSPACE is NULL, hoist out all locations of B. */ | |
12689 | ||
12690 | static struct bp_location * | |
12691 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12692 | { | |
12693 | struct bp_location head; | |
12694 | struct bp_location *i = b->loc; | |
12695 | struct bp_location **i_link = &b->loc; | |
12696 | struct bp_location *hoisted = &head; | |
12697 | ||
12698 | if (pspace == NULL) | |
12699 | { | |
12700 | i = b->loc; | |
12701 | b->loc = NULL; | |
12702 | return i; | |
12703 | } | |
12704 | ||
12705 | head.next = NULL; | |
12706 | ||
12707 | while (i != NULL) | |
12708 | { | |
12709 | if (i->pspace == pspace) | |
12710 | { | |
12711 | *i_link = i->next; | |
12712 | i->next = NULL; | |
12713 | hoisted->next = i; | |
12714 | hoisted = i; | |
12715 | } | |
12716 | else | |
12717 | i_link = &i->next; | |
12718 | i = *i_link; | |
12719 | } | |
12720 | ||
12721 | return head.next; | |
12722 | } | |
12723 | ||
12724 | /* Create new breakpoint locations for B (a hardware or software | |
12725 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12726 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12727 | FILTER_PSPACE. Locations of other program spaces are left | |
12728 | untouched. */ | |
f1310107 | 12729 | |
0e30163f | 12730 | void |
74421c0b | 12731 | update_breakpoint_locations (code_breakpoint *b, |
c2f4122d | 12732 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12733 | gdb::array_view<const symtab_and_line> sals, |
12734 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12735 | { |
c2f4122d | 12736 | struct bp_location *existing_locations; |
0d381245 | 12737 | |
6c5b2ebe | 12738 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12739 | { |
12740 | /* Ranged breakpoints have only one start location and one end | |
12741 | location. */ | |
12742 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12743 | gdb_printf (gdb_stderr, |
12744 | _("Could not reset ranged breakpoint %d: " | |
12745 | "multiple locations found\n"), | |
12746 | b->number); | |
f8eba3c6 TT |
12747 | return; |
12748 | } | |
f1310107 | 12749 | |
4a64f543 MS |
12750 | /* If there's no new locations, and all existing locations are |
12751 | pending, don't do anything. This optimizes the common case where | |
12752 | all locations are in the same shared library, that was unloaded. | |
12753 | We'd like to retain the location, so that when the library is | |
12754 | loaded again, we don't loose the enabled/disabled status of the | |
12755 | individual locations. */ | |
6c5b2ebe | 12756 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12757 | return; |
12758 | ||
c2f4122d | 12759 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12760 | |
6c5b2ebe | 12761 | for (const auto &sal : sals) |
fe3f5fa8 | 12762 | { |
f8eba3c6 TT |
12763 | struct bp_location *new_loc; |
12764 | ||
6c5b2ebe | 12765 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12766 | |
06615628 | 12767 | new_loc = b->add_location (sal); |
fe3f5fa8 | 12768 | |
0d381245 VP |
12769 | /* Reparse conditions, they might contain references to the |
12770 | old symtab. */ | |
12771 | if (b->cond_string != NULL) | |
12772 | { | |
bbc13ae3 | 12773 | const char *s; |
fe3f5fa8 | 12774 | |
6f781ee3 | 12775 | s = b->cond_string.get (); |
a70b8144 | 12776 | try |
0d381245 | 12777 | { |
6c5b2ebe PA |
12778 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12779 | block_for_pc (sal.pc), | |
0d381245 VP |
12780 | 0); |
12781 | } | |
230d2906 | 12782 | catch (const gdb_exception_error &e) |
0d381245 | 12783 | { |
b5fa468f | 12784 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12785 | } |
12786 | } | |
fe3f5fa8 | 12787 | |
6c5b2ebe | 12788 | if (!sals_end.empty ()) |
f1310107 | 12789 | { |
6c5b2ebe | 12790 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12791 | |
6c5b2ebe | 12792 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12793 | } |
0d381245 | 12794 | } |
fe3f5fa8 | 12795 | |
4a64f543 MS |
12796 | /* If possible, carry over 'disable' status from existing |
12797 | breakpoints. */ | |
0d381245 VP |
12798 | { |
12799 | struct bp_location *e = existing_locations; | |
776592bf DE |
12800 | /* If there are multiple breakpoints with the same function name, |
12801 | e.g. for inline functions, comparing function names won't work. | |
12802 | Instead compare pc addresses; this is just a heuristic as things | |
12803 | may have moved, but in practice it gives the correct answer | |
12804 | often enough until a better solution is found. */ | |
12805 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12806 | ||
0d381245 VP |
12807 | for (; e; e = e->next) |
12808 | { | |
b5fa468f | 12809 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12810 | { |
776592bf DE |
12811 | if (have_ambiguous_names) |
12812 | { | |
40cb8ca5 | 12813 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12814 | { |
12815 | /* Ignore software vs hardware location type at | |
12816 | this point, because with "set breakpoint | |
12817 | auto-hw", after a re-set, locations that were | |
12818 | hardware can end up as software, or vice versa. | |
12819 | As mentioned above, this is an heuristic and in | |
12820 | practice should give the correct answer often | |
12821 | enough. */ | |
12822 | if (breakpoint_locations_match (e, l, true)) | |
12823 | { | |
b5fa468f TBA |
12824 | l->enabled = e->enabled; |
12825 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12826 | break; |
12827 | } | |
12828 | } | |
776592bf DE |
12829 | } |
12830 | else | |
12831 | { | |
40cb8ca5 | 12832 | for (bp_location *l : b->locations ()) |
776592bf | 12833 | if (l->function_name |
23d6ee64 TT |
12834 | && strcmp (e->function_name.get (), |
12835 | l->function_name.get ()) == 0) | |
776592bf | 12836 | { |
b5fa468f TBA |
12837 | l->enabled = e->enabled; |
12838 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12839 | break; |
12840 | } | |
12841 | } | |
0d381245 VP |
12842 | } |
12843 | } | |
12844 | } | |
fe3f5fa8 | 12845 | |
8d3788bd | 12846 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12847 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12848 | } |
12849 | ||
264f9890 | 12850 | /* Find the SaL locations corresponding to the given LOCSPEC. |
ef23e705 TJB |
12851 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12852 | ||
2c9a6d72 TT |
12853 | std::vector<symtab_and_line> |
12854 | code_breakpoint::location_spec_to_sals (location_spec *locspec, | |
12855 | struct program_space *search_pspace, | |
12856 | int *found) | |
ef23e705 | 12857 | { |
cc06b668 | 12858 | struct gdb_exception exception; |
ef23e705 | 12859 | |
6c5b2ebe PA |
12860 | std::vector<symtab_and_line> sals; |
12861 | ||
a70b8144 | 12862 | try |
ef23e705 | 12863 | { |
2c9a6d72 | 12864 | sals = decode_location_spec (locspec, search_pspace); |
ef23e705 | 12865 | } |
94aeb44b | 12866 | catch (gdb_exception_error &e) |
ef23e705 | 12867 | { |
d8de7963 | 12868 | int not_found_and_ok = false; |
492d29ea | 12869 | |
ef23e705 TJB |
12870 | /* For pending breakpoints, it's expected that parsing will |
12871 | fail until the right shared library is loaded. User has | |
12872 | already told to create pending breakpoints and don't need | |
12873 | extra messages. If breakpoint is in bp_shlib_disabled | |
12874 | state, then user already saw the message about that | |
12875 | breakpoint being disabled, and don't want to see more | |
12876 | errors. */ | |
58438ac1 | 12877 | if (e.error == NOT_FOUND_ERROR |
2c9a6d72 TT |
12878 | && (condition_not_parsed |
12879 | || (loc != NULL | |
c2f4122d | 12880 | && search_pspace != NULL |
2c9a6d72 TT |
12881 | && loc->pspace != search_pspace) |
12882 | || (loc && loc->shlib_disabled) | |
12883 | || (loc && loc->pspace->executing_startup) | |
12884 | || enable_state == bp_disabled)) | |
d8de7963 | 12885 | not_found_and_ok = true; |
ef23e705 TJB |
12886 | |
12887 | if (!not_found_and_ok) | |
12888 | { | |
12889 | /* We surely don't want to warn about the same breakpoint | |
12890 | 10 times. One solution, implemented here, is disable | |
12891 | the breakpoint on error. Another solution would be to | |
12892 | have separate 'warning emitted' flag. Since this | |
12893 | happens only when a binary has changed, I don't know | |
12894 | which approach is better. */ | |
2c9a6d72 | 12895 | enable_state = bp_disabled; |
eedc3f4f | 12896 | throw; |
ef23e705 | 12897 | } |
94aeb44b TT |
12898 | |
12899 | exception = std::move (e); | |
ef23e705 TJB |
12900 | } |
12901 | ||
492d29ea | 12902 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12903 | { |
6c5b2ebe PA |
12904 | for (auto &sal : sals) |
12905 | resolve_sal_pc (&sal); | |
2c9a6d72 | 12906 | if (condition_not_parsed && extra_string != NULL) |
ef23e705 | 12907 | { |
2c9a6d72 TT |
12908 | gdb::unique_xmalloc_ptr<char> local_cond, local_extra; |
12909 | int local_thread, local_task; | |
ef23e705 | 12910 | |
2c9a6d72 TT |
12911 | find_condition_and_thread_for_sals (sals, extra_string.get (), |
12912 | &local_cond, &local_thread, | |
12913 | &local_task, &local_extra); | |
12914 | gdb_assert (cond_string == nullptr); | |
12915 | if (local_cond != nullptr) | |
12916 | cond_string = std::move (local_cond); | |
12917 | thread = local_thread; | |
12918 | task = local_task; | |
12919 | if (local_extra != nullptr) | |
12920 | extra_string = std::move (local_extra); | |
12921 | condition_not_parsed = 0; | |
ef23e705 TJB |
12922 | } |
12923 | ||
2c9a6d72 TT |
12924 | if (type == bp_static_tracepoint) |
12925 | sals[0] = update_static_tracepoint (this, sals[0]); | |
ef23e705 | 12926 | |
58438ac1 TT |
12927 | *found = 1; |
12928 | } | |
12929 | else | |
12930 | *found = 0; | |
ef23e705 TJB |
12931 | |
12932 | return sals; | |
12933 | } | |
12934 | ||
348d480f PA |
12935 | /* The default re_set method, for typical hardware or software |
12936 | breakpoints. Reevaluate the breakpoint and recreate its | |
12937 | locations. */ | |
12938 | ||
b3d5660a TT |
12939 | void |
12940 | code_breakpoint::re_set_default () | |
ef23e705 | 12941 | { |
c2f4122d | 12942 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 12943 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 12944 | |
6c5b2ebe | 12945 | int found; |
2c9a6d72 TT |
12946 | std::vector<symtab_and_line> sals = location_spec_to_sals (locspec.get (), |
12947 | filter_pspace, | |
12948 | &found); | |
ef23e705 | 12949 | if (found) |
6c5b2ebe | 12950 | expanded = std::move (sals); |
ef23e705 | 12951 | |
b3d5660a | 12952 | if (locspec_range_end != nullptr) |
f1310107 | 12953 | { |
6c5b2ebe | 12954 | std::vector<symtab_and_line> sals_end |
2c9a6d72 | 12955 | = location_spec_to_sals (locspec_range_end.get (), |
264f9890 | 12956 | filter_pspace, &found); |
f1310107 | 12957 | if (found) |
6c5b2ebe | 12958 | expanded_end = std::move (sals_end); |
f1310107 TJB |
12959 | } |
12960 | ||
b3d5660a | 12961 | update_breakpoint_locations (this, filter_pspace, expanded, expanded_end); |
28010a5d PA |
12962 | } |
12963 | ||
983af33b SDJ |
12964 | /* Default method for creating SALs from an address string. It basically |
12965 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12966 | ||
12967 | static void | |
264f9890 PA |
12968 | create_sals_from_location_spec_default (location_spec *locspec, |
12969 | struct linespec_result *canonical) | |
983af33b | 12970 | { |
264f9890 | 12971 | parse_breakpoint_sals (locspec, canonical); |
983af33b SDJ |
12972 | } |
12973 | ||
bf469271 | 12974 | /* Reset a breakpoint. */ |
c906108c | 12975 | |
bf469271 PA |
12976 | static void |
12977 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 12978 | { |
fdf44873 TT |
12979 | input_radix = b->input_radix; |
12980 | set_language (b->language); | |
c906108c | 12981 | |
c47614fe | 12982 | b->re_set (); |
c906108c SS |
12983 | } |
12984 | ||
c2f4122d PA |
12985 | /* Re-set breakpoint locations for the current program space. |
12986 | Locations bound to other program spaces are left untouched. */ | |
12987 | ||
c906108c | 12988 | void |
69de3c6a | 12989 | breakpoint_re_set (void) |
c906108c | 12990 | { |
c5aa993b | 12991 | { |
fdf44873 TT |
12992 | scoped_restore_current_language save_language; |
12993 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 12994 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 12995 | |
8e817061 JB |
12996 | /* breakpoint_re_set_one sets the current_language to the language |
12997 | of the breakpoint it is resetting (see prepare_re_set_context) | |
12998 | before re-evaluating the breakpoint's location. This change can | |
12999 | unfortunately get undone by accident if the language_mode is set | |
13000 | to auto, and we either switch frames, or more likely in this context, | |
13001 | we select the current frame. | |
13002 | ||
13003 | We prevent this by temporarily turning the language_mode to | |
13004 | language_mode_manual. We restore it once all breakpoints | |
13005 | have been reset. */ | |
13006 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13007 | language_mode = language_mode_manual; | |
13008 | ||
5ed8105e PA |
13009 | /* Note: we must not try to insert locations until after all |
13010 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13011 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13012 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13013 | |
1428b37a | 13014 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 13015 | { |
a70b8144 | 13016 | try |
bf469271 PA |
13017 | { |
13018 | breakpoint_re_set_one (b); | |
13019 | } | |
230d2906 | 13020 | catch (const gdb_exception &ex) |
bf469271 PA |
13021 | { |
13022 | exception_fprintf (gdb_stderr, ex, | |
13023 | "Error in re-setting breakpoint %d: ", | |
13024 | b->number); | |
13025 | } | |
5ed8105e | 13026 | } |
5ed8105e PA |
13027 | |
13028 | jit_breakpoint_re_set (); | |
13029 | } | |
6c95b8df | 13030 | |
af02033e PP |
13031 | create_overlay_event_breakpoint (); |
13032 | create_longjmp_master_breakpoint (); | |
13033 | create_std_terminate_master_breakpoint (); | |
186c406b | 13034 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13035 | |
13036 | /* Now we can insert. */ | |
13037 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13038 | } |
13039 | \f | |
c906108c SS |
13040 | /* Reset the thread number of this breakpoint: |
13041 | ||
13042 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13043 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13044 | void |
fba45db2 | 13045 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13046 | { |
13047 | if (b->thread != -1) | |
13048 | { | |
00431a78 | 13049 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13050 | |
13051 | /* We're being called after following a fork. The new fork is | |
13052 | selected as current, and unless this was a vfork will have a | |
13053 | different program space from the original thread. Reset that | |
13054 | as well. */ | |
13055 | b->loc->pspace = current_program_space; | |
c906108c SS |
13056 | } |
13057 | } | |
13058 | ||
03ac34d5 MS |
13059 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13060 | If from_tty is nonzero, it prints a message to that effect, | |
13061 | which ends with a period (no newline). */ | |
13062 | ||
c906108c | 13063 | void |
fba45db2 | 13064 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13065 | { |
c906108c SS |
13066 | if (count < 0) |
13067 | count = 0; | |
13068 | ||
43892fdf | 13069 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13070 | if (b->number == bptnum) |
01add95b SM |
13071 | { |
13072 | if (is_tracepoint (b)) | |
13073 | { | |
13074 | if (from_tty && count != 0) | |
6cb06a8c TT |
13075 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
13076 | bptnum); | |
01add95b SM |
13077 | return; |
13078 | } | |
13079 | ||
13080 | b->ignore_count = count; | |
13081 | if (from_tty) | |
13082 | { | |
13083 | if (count == 0) | |
6cb06a8c TT |
13084 | gdb_printf (_("Will stop next time " |
13085 | "breakpoint %d is reached."), | |
13086 | bptnum); | |
01add95b | 13087 | else if (count == 1) |
6cb06a8c TT |
13088 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
13089 | bptnum); | |
01add95b | 13090 | else |
6cb06a8c TT |
13091 | gdb_printf (_("Will ignore next %d " |
13092 | "crossings of breakpoint %d."), | |
13093 | count, bptnum); | |
01add95b SM |
13094 | } |
13095 | gdb::observers::breakpoint_modified.notify (b); | |
13096 | return; | |
13097 | } | |
c906108c | 13098 | |
8a3fe4f8 | 13099 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13100 | } |
13101 | ||
c906108c SS |
13102 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13103 | ||
13104 | static void | |
0b39b52e | 13105 | ignore_command (const char *args, int from_tty) |
c906108c | 13106 | { |
0b39b52e | 13107 | const char *p = args; |
52f0bd74 | 13108 | int num; |
c906108c SS |
13109 | |
13110 | if (p == 0) | |
e2e0b3e5 | 13111 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13112 | |
c906108c | 13113 | num = get_number (&p); |
5c44784c | 13114 | if (num == 0) |
8a3fe4f8 | 13115 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13116 | if (*p == 0) |
8a3fe4f8 | 13117 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13118 | |
13119 | set_ignore_count (num, | |
13120 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13121 | from_tty); | |
221ea385 | 13122 | if (from_tty) |
6cb06a8c | 13123 | gdb_printf ("\n"); |
c906108c SS |
13124 | } |
13125 | \f | |
d0fe4701 XR |
13126 | |
13127 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13128 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13129 | |
13130 | static void | |
d0fe4701 XR |
13131 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13132 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13133 | { |
d0fe4701 XR |
13134 | if (bp_num_range.first == 0) |
13135 | { | |
13136 | warning (_("bad breakpoint number at or near '%d'"), | |
13137 | bp_num_range.first); | |
13138 | } | |
13139 | else | |
c906108c | 13140 | { |
d0fe4701 | 13141 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13142 | { |
d0fe4701 XR |
13143 | bool match = false; |
13144 | ||
1428b37a | 13145 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 13146 | if (b->number == i) |
5c44784c | 13147 | { |
bfd28288 | 13148 | match = true; |
48649e1b | 13149 | function (b); |
11cf8741 | 13150 | break; |
5c44784c | 13151 | } |
bfd28288 | 13152 | if (!match) |
6cb06a8c | 13153 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13154 | } |
c906108c SS |
13155 | } |
13156 | } | |
13157 | ||
d0fe4701 XR |
13158 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13159 | ARGS. */ | |
13160 | ||
13161 | static void | |
13162 | map_breakpoint_numbers (const char *args, | |
13163 | gdb::function_view<void (breakpoint *)> function) | |
13164 | { | |
13165 | if (args == NULL || *args == '\0') | |
13166 | error_no_arg (_("one or more breakpoint numbers")); | |
13167 | ||
13168 | number_or_range_parser parser (args); | |
13169 | ||
13170 | while (!parser.finished ()) | |
13171 | { | |
13172 | int num = parser.get_number (); | |
13173 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13174 | } | |
13175 | } | |
13176 | ||
13177 | /* Return the breakpoint location structure corresponding to the | |
13178 | BP_NUM and LOC_NUM values. */ | |
13179 | ||
0d381245 | 13180 | static struct bp_location * |
d0fe4701 | 13181 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13182 | { |
43892fdf | 13183 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
13184 | |
13185 | if (!b || b->number != bp_num) | |
d0fe4701 | 13186 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13187 | |
0d381245 | 13188 | if (loc_num == 0) |
d0fe4701 | 13189 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13190 | |
d0fe4701 | 13191 | int n = 0; |
40cb8ca5 | 13192 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
13193 | if (++n == loc_num) |
13194 | return loc; | |
13195 | ||
13196 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13197 | } |
13198 | ||
95e95a6d PA |
13199 | /* Modes of operation for extract_bp_num. */ |
13200 | enum class extract_bp_kind | |
13201 | { | |
13202 | /* Extracting a breakpoint number. */ | |
13203 | bp, | |
13204 | ||
13205 | /* Extracting a location number. */ | |
13206 | loc, | |
13207 | }; | |
13208 | ||
13209 | /* Extract a breakpoint or location number (as determined by KIND) | |
13210 | from the string starting at START. TRAILER is a character which | |
13211 | can be found after the number. If you don't want a trailer, use | |
13212 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13213 | string. This always returns a positive integer. */ | |
13214 | ||
13215 | static int | |
13216 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13217 | int trailer, const char **end_out = NULL) | |
13218 | { | |
13219 | const char *end = start; | |
13220 | int num = get_number_trailer (&end, trailer); | |
13221 | if (num < 0) | |
13222 | error (kind == extract_bp_kind::bp | |
13223 | ? _("Negative breakpoint number '%.*s'") | |
13224 | : _("Negative breakpoint location number '%.*s'"), | |
13225 | int (end - start), start); | |
13226 | if (num == 0) | |
13227 | error (kind == extract_bp_kind::bp | |
13228 | ? _("Bad breakpoint number '%.*s'") | |
13229 | : _("Bad breakpoint location number '%.*s'"), | |
13230 | int (end - start), start); | |
13231 | ||
13232 | if (end_out != NULL) | |
13233 | *end_out = end; | |
13234 | return num; | |
13235 | } | |
13236 | ||
13237 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13238 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13239 | representing the (inclusive) range. The returned pair's elements | |
13240 | are always positive integers. */ | |
13241 | ||
13242 | static std::pair<int, int> | |
13243 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13244 | const std::string &arg, | |
13245 | std::string::size_type arg_offset) | |
13246 | { | |
13247 | std::pair<int, int> range; | |
13248 | const char *bp_loc = &arg[arg_offset]; | |
13249 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13250 | if (dash != std::string::npos) | |
13251 | { | |
13252 | /* bp_loc is a range (x-z). */ | |
13253 | if (arg.length () == dash + 1) | |
13254 | error (kind == extract_bp_kind::bp | |
13255 | ? _("Bad breakpoint number at or near: '%s'") | |
13256 | : _("Bad breakpoint location number at or near: '%s'"), | |
13257 | bp_loc); | |
13258 | ||
13259 | const char *end; | |
13260 | const char *start_first = bp_loc; | |
13261 | const char *start_second = &arg[dash + 1]; | |
13262 | range.first = extract_bp_num (kind, start_first, '-'); | |
13263 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13264 | ||
13265 | if (range.first > range.second) | |
13266 | error (kind == extract_bp_kind::bp | |
13267 | ? _("Inverted breakpoint range at '%.*s'") | |
13268 | : _("Inverted breakpoint location range at '%.*s'"), | |
13269 | int (end - start_first), start_first); | |
13270 | } | |
13271 | else | |
13272 | { | |
13273 | /* bp_loc is a single value. */ | |
13274 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13275 | range.second = range.first; | |
13276 | } | |
13277 | return range; | |
13278 | } | |
13279 | ||
d0fe4701 XR |
13280 | /* Extract the breakpoint/location range specified by ARG. Returns |
13281 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13282 | BP_LOC_RANGE. | |
13283 | ||
13284 | ARG may be in any of the following forms: | |
13285 | ||
13286 | x where 'x' is a breakpoint number. | |
13287 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13288 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13289 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13290 | location number range. | |
13291 | */ | |
13292 | ||
cc638e86 | 13293 | static void |
d0fe4701 XR |
13294 | extract_bp_number_and_location (const std::string &arg, |
13295 | std::pair<int, int> &bp_num_range, | |
13296 | std::pair<int, int> &bp_loc_range) | |
13297 | { | |
13298 | std::string::size_type dot = arg.find ('.'); | |
13299 | ||
13300 | if (dot != std::string::npos) | |
13301 | { | |
13302 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13303 | ||
13304 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13305 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13306 | |
95e95a6d PA |
13307 | bp_num_range.first |
13308 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13309 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13310 | |
95e95a6d PA |
13311 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13312 | arg, dot + 1); | |
d0fe4701 XR |
13313 | } |
13314 | else | |
13315 | { | |
13316 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13317 | |
95e95a6d | 13318 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13319 | bp_loc_range.first = 0; |
13320 | bp_loc_range.second = 0; | |
13321 | } | |
d0fe4701 XR |
13322 | } |
13323 | ||
13324 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13325 | specifies whether to enable or disable. */ | |
13326 | ||
13327 | static void | |
13328 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13329 | { | |
13330 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13331 | if (loc != NULL) | |
13332 | { | |
b5fa468f TBA |
13333 | if (loc->disabled_by_cond && enable) |
13334 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13335 | "cannot enable."), bp_num, loc_num); | |
13336 | ||
d0fe4701 XR |
13337 | if (loc->enabled != enable) |
13338 | { | |
13339 | loc->enabled = enable; | |
13340 | mark_breakpoint_location_modified (loc); | |
13341 | } | |
13342 | if (target_supports_enable_disable_tracepoint () | |
13343 | && current_trace_status ()->running && loc->owner | |
13344 | && is_tracepoint (loc->owner)) | |
13345 | target_disable_tracepoint (loc); | |
13346 | } | |
13347 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13348 | |
e5213e2c SF |
13349 | gdb::observers::breakpoint_modified.notify (loc->owner); |
13350 | } | |
13351 | ||
13352 | /* Calculates LOC_NUM for LOC by traversing the bp_location chain of LOC's | |
13353 | owner. 1-based indexing. -1 signals NOT FOUND. */ | |
13354 | ||
13355 | static int | |
d8a77e4c | 13356 | find_loc_num_by_location (const bp_location *loc) |
e5213e2c SF |
13357 | { |
13358 | if (loc != nullptr && loc->owner != nullptr) | |
13359 | { | |
13360 | /* Locations use 1-based indexing. */ | |
13361 | int loc_num = 1; | |
13362 | for (bp_location *it : loc->owner->locations ()) | |
13363 | { | |
13364 | if (it == loc) | |
13365 | return loc_num; | |
13366 | loc_num++; | |
13367 | } | |
13368 | } | |
13369 | return -1; | |
13370 | } | |
13371 | ||
13372 | /* Enable or disable a breakpoint location LOC. ENABLE | |
13373 | specifies whether to enable or disable. */ | |
13374 | ||
13375 | void | |
13376 | enable_disable_bp_location (bp_location *loc, bool enable) | |
13377 | { | |
13378 | if (loc == nullptr) | |
13379 | error (_("Breakpoint location is invalid.")); | |
13380 | ||
13381 | if (loc->owner == nullptr) | |
13382 | error (_("Breakpoint location does not have an owner breakpoint.")); | |
13383 | ||
13384 | if (loc->disabled_by_cond && enable) | |
13385 | { | |
13386 | int loc_num = find_loc_num_by_location (loc); | |
13387 | if (loc_num == -1) | |
13388 | error (_("Breakpoint location LOC_NUM could not be found.")); | |
13389 | else | |
13390 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13391 | "cannot enable."), loc->owner->number, loc_num); | |
13392 | } | |
13393 | ||
13394 | if (loc->enabled != enable) | |
13395 | { | |
13396 | loc->enabled = enable; | |
13397 | mark_breakpoint_location_modified (loc); | |
13398 | } | |
13399 | ||
13400 | if (target_supports_enable_disable_tracepoint () | |
13401 | && current_trace_status ()->running && loc->owner | |
13402 | && is_tracepoint (loc->owner)) | |
13403 | target_disable_tracepoint (loc); | |
13404 | ||
13405 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13406 | gdb::observers::breakpoint_modified.notify (loc->owner); |
d0fe4701 XR |
13407 | } |
13408 | ||
13409 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13410 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13411 | (inclusive) range of location numbers of that breakpoint to | |
13412 | enable/disable. ENABLE specifies whether to enable or disable the | |
13413 | location. */ | |
13414 | ||
13415 | static void | |
13416 | enable_disable_breakpoint_location_range (int bp_num, | |
13417 | std::pair<int, int> &bp_loc_range, | |
13418 | bool enable) | |
13419 | { | |
13420 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13421 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13422 | } | |
0d381245 | 13423 | |
1900040c MS |
13424 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13425 | If from_tty is nonzero, it prints a message to that effect, | |
13426 | which ends with a period (no newline). */ | |
13427 | ||
c906108c | 13428 | void |
fba45db2 | 13429 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13430 | { |
13431 | /* Never disable a watchpoint scope breakpoint; we want to | |
13432 | hit them when we leave scope so we can delete both the | |
13433 | watchpoint and its scope breakpoint at that time. */ | |
13434 | if (bpt->type == bp_watchpoint_scope) | |
13435 | return; | |
13436 | ||
b5de0fa7 | 13437 | bpt->enable_state = bp_disabled; |
c906108c | 13438 | |
b775012e LM |
13439 | /* Mark breakpoint locations modified. */ |
13440 | mark_breakpoint_modified (bpt); | |
13441 | ||
d248b706 KY |
13442 | if (target_supports_enable_disable_tracepoint () |
13443 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13444 | { | |
40cb8ca5 | 13445 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13446 | target_disable_tracepoint (location); |
13447 | } | |
13448 | ||
44702360 | 13449 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13450 | |
76727919 | 13451 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13452 | } |
13453 | ||
d0fe4701 XR |
13454 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13455 | specified in ARGS. ARGS may be in any of the formats handled by | |
13456 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13457 | or disable the breakpoints/locations. */ | |
13458 | ||
c906108c | 13459 | static void |
d0fe4701 | 13460 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13461 | { |
c906108c | 13462 | if (args == 0) |
46c6471b | 13463 | { |
43892fdf | 13464 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13465 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13466 | { |
13467 | if (enable) | |
13468 | enable_breakpoint (bpt); | |
13469 | else | |
13470 | disable_breakpoint (bpt); | |
13471 | } | |
46c6471b | 13472 | } |
9eaabc75 | 13473 | else |
0d381245 | 13474 | { |
cb791d59 | 13475 | std::string num = extract_arg (&args); |
9eaabc75 | 13476 | |
cb791d59 | 13477 | while (!num.empty ()) |
d248b706 | 13478 | { |
d0fe4701 | 13479 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13480 | |
cc638e86 PA |
13481 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13482 | ||
13483 | if (bp_loc_range.first == bp_loc_range.second | |
78805ff8 PW |
13484 | && (bp_loc_range.first == 0 |
13485 | || (bp_loc_range.first == 1 | |
13486 | && bp_num_range.first == bp_num_range.second | |
13487 | && !has_multiple_locations (bp_num_range.first)))) | |
d0fe4701 | 13488 | { |
78805ff8 PW |
13489 | /* Handle breakpoint ids with formats 'x' or 'x-z' |
13490 | or 'y.1' where y has only one code location. */ | |
cc638e86 PA |
13491 | map_breakpoint_number_range (bp_num_range, |
13492 | enable | |
13493 | ? enable_breakpoint | |
13494 | : disable_breakpoint); | |
13495 | } | |
13496 | else | |
13497 | { | |
13498 | /* Handle breakpoint ids with formats 'x.y' or | |
13499 | 'x.y-z'. */ | |
13500 | enable_disable_breakpoint_location_range | |
13501 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13502 | } |
9eaabc75 | 13503 | num = extract_arg (&args); |
d248b706 | 13504 | } |
0d381245 | 13505 | } |
c906108c SS |
13506 | } |
13507 | ||
d0fe4701 XR |
13508 | /* The disable command disables the specified breakpoints/locations |
13509 | (or all defined breakpoints) so they're no longer effective in | |
13510 | stopping the inferior. ARGS may be in any of the forms defined in | |
13511 | extract_bp_number_and_location. */ | |
13512 | ||
13513 | static void | |
13514 | disable_command (const char *args, int from_tty) | |
13515 | { | |
13516 | enable_disable_command (args, from_tty, false); | |
13517 | } | |
13518 | ||
c906108c | 13519 | static void |
816338b5 SS |
13520 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13521 | int count) | |
c906108c | 13522 | { |
afe38095 | 13523 | int target_resources_ok; |
c906108c SS |
13524 | |
13525 | if (bpt->type == bp_hardware_breakpoint) | |
13526 | { | |
13527 | int i; | |
c5aa993b | 13528 | i = hw_breakpoint_used_count (); |
53a5351d | 13529 | target_resources_ok = |
d92524f1 | 13530 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13531 | i + 1, 0); |
c906108c | 13532 | if (target_resources_ok == 0) |
8a3fe4f8 | 13533 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13534 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13535 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13536 | } |
13537 | ||
cc60f2e3 | 13538 | if (is_watchpoint (bpt)) |
c906108c | 13539 | { |
d07205c2 | 13540 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13541 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13542 | |
a70b8144 | 13543 | try |
c906108c | 13544 | { |
3a5c3e22 PA |
13545 | struct watchpoint *w = (struct watchpoint *) bpt; |
13546 | ||
1e718ff1 TJB |
13547 | orig_enable_state = bpt->enable_state; |
13548 | bpt->enable_state = bp_enabled; | |
d8de7963 | 13549 | update_watchpoint (w, true /* reparse */); |
c906108c | 13550 | } |
b1ffd112 | 13551 | catch (const gdb_exception_error &e) |
c5aa993b | 13552 | { |
1e718ff1 | 13553 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13554 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13555 | bpt->number); | |
13556 | return; | |
c5aa993b | 13557 | } |
c906108c | 13558 | } |
0101ce28 | 13559 | |
b775012e LM |
13560 | bpt->enable_state = bp_enabled; |
13561 | ||
13562 | /* Mark breakpoint locations modified. */ | |
13563 | mark_breakpoint_modified (bpt); | |
13564 | ||
d248b706 KY |
13565 | if (target_supports_enable_disable_tracepoint () |
13566 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13567 | { | |
40cb8ca5 | 13568 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13569 | target_enable_tracepoint (location); |
13570 | } | |
13571 | ||
b4c291bb | 13572 | bpt->disposition = disposition; |
816338b5 | 13573 | bpt->enable_count = count; |
44702360 | 13574 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13575 | |
76727919 | 13576 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13577 | } |
13578 | ||
fe3f5fa8 | 13579 | |
c906108c | 13580 | void |
fba45db2 | 13581 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13582 | { |
816338b5 | 13583 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13584 | } |
13585 | ||
d0fe4701 XR |
13586 | /* The enable command enables the specified breakpoints/locations (or |
13587 | all defined breakpoints) so they once again become (or continue to | |
13588 | be) effective in stopping the inferior. ARGS may be in any of the | |
13589 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13590 | |
c906108c | 13591 | static void |
981a3fb3 | 13592 | enable_command (const char *args, int from_tty) |
c906108c | 13593 | { |
d0fe4701 | 13594 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13595 | } |
13596 | ||
c906108c | 13597 | static void |
4495129a | 13598 | enable_once_command (const char *args, int from_tty) |
c906108c | 13599 | { |
48649e1b TT |
13600 | map_breakpoint_numbers |
13601 | (args, [&] (breakpoint *b) | |
13602 | { | |
13603 | iterate_over_related_breakpoints | |
13604 | (b, [&] (breakpoint *bpt) | |
13605 | { | |
13606 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13607 | }); | |
13608 | }); | |
816338b5 SS |
13609 | } |
13610 | ||
13611 | static void | |
4495129a | 13612 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13613 | { |
b9d61307 SM |
13614 | int count; |
13615 | ||
13616 | if (args == NULL) | |
13617 | error_no_arg (_("hit count")); | |
13618 | ||
13619 | count = get_number (&args); | |
816338b5 | 13620 | |
48649e1b TT |
13621 | map_breakpoint_numbers |
13622 | (args, [&] (breakpoint *b) | |
13623 | { | |
13624 | iterate_over_related_breakpoints | |
13625 | (b, [&] (breakpoint *bpt) | |
13626 | { | |
13627 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13628 | }); | |
13629 | }); | |
c906108c SS |
13630 | } |
13631 | ||
c906108c | 13632 | static void |
4495129a | 13633 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13634 | { |
48649e1b TT |
13635 | map_breakpoint_numbers |
13636 | (args, [&] (breakpoint *b) | |
13637 | { | |
13638 | iterate_over_related_breakpoints | |
13639 | (b, [&] (breakpoint *bpt) | |
13640 | { | |
13641 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13642 | }); | |
13643 | }); | |
c906108c SS |
13644 | } |
13645 | \f | |
1f3b5d1b PP |
13646 | /* Invalidate last known value of any hardware watchpoint if |
13647 | the memory which that value represents has been written to by | |
13648 | GDB itself. */ | |
13649 | ||
13650 | static void | |
8de0566d YQ |
13651 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13652 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13653 | const bfd_byte *data) |
13654 | { | |
43892fdf | 13655 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13656 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13657 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13658 | { |
3a5c3e22 | 13659 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13660 | |
850645cf | 13661 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13662 | { |
40cb8ca5 | 13663 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13664 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13665 | && loc->address + loc->length > addr | |
13666 | && addr + len > loc->address) | |
13667 | { | |
3a5c3e22 | 13668 | wp->val = NULL; |
4c1d86d9 | 13669 | wp->val_valid = false; |
3a5c3e22 PA |
13670 | } |
13671 | } | |
1f3b5d1b PP |
13672 | } |
13673 | } | |
13674 | ||
8181d85f DJ |
13675 | /* Create and insert a breakpoint for software single step. */ |
13676 | ||
13677 | void | |
6c95b8df | 13678 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13679 | const address_space *aspace, |
4a64f543 | 13680 | CORE_ADDR next_pc) |
8181d85f | 13681 | { |
7c16b83e PA |
13682 | struct thread_info *tp = inferior_thread (); |
13683 | struct symtab_and_line sal; | |
13684 | CORE_ADDR pc = next_pc; | |
8181d85f | 13685 | |
34b7e8a6 PA |
13686 | if (tp->control.single_step_breakpoints == NULL) |
13687 | { | |
960bc2bd | 13688 | std::unique_ptr<breakpoint> b |
7ab97995 PA |
13689 | (new momentary_breakpoint (gdbarch, bp_single_step, |
13690 | current_program_space, | |
13691 | null_frame_id, | |
13692 | tp->global_num)); | |
960bc2bd | 13693 | |
34b7e8a6 | 13694 | tp->control.single_step_breakpoints |
960bc2bd | 13695 | = add_to_breakpoint_chain (std::move (b)); |
34b7e8a6 | 13696 | } |
8181d85f | 13697 | |
7c16b83e PA |
13698 | sal = find_pc_line (pc, 0); |
13699 | sal.pc = pc; | |
13700 | sal.section = find_pc_overlay (pc); | |
13701 | sal.explicit_pc = 1; | |
960bc2bd PA |
13702 | |
13703 | auto *ss_bp | |
98ed24fb TT |
13704 | = (gdb::checked_static_cast<momentary_breakpoint *> |
13705 | (tp->control.single_step_breakpoints)); | |
960bc2bd | 13706 | ss_bp->add_location (sal); |
8181d85f | 13707 | |
7c16b83e | 13708 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13709 | } |
13710 | ||
93f9a11f YQ |
13711 | /* Insert single step breakpoints according to the current state. */ |
13712 | ||
13713 | int | |
13714 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13715 | { | |
f5ea389a | 13716 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13717 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13718 | |
f5ea389a | 13719 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13720 | |
a0ff9e1a | 13721 | if (!next_pcs.empty ()) |
93f9a11f | 13722 | { |
bd2b40ac | 13723 | frame_info_ptr frame = get_current_frame (); |
8b86c959 | 13724 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13725 | |
a0ff9e1a | 13726 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13727 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13728 | ||
93f9a11f YQ |
13729 | return 1; |
13730 | } | |
13731 | else | |
13732 | return 0; | |
13733 | } | |
13734 | ||
34b7e8a6 | 13735 | /* See breakpoint.h. */ |
f02253f1 HZ |
13736 | |
13737 | int | |
7c16b83e | 13738 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13739 | const address_space *aspace, |
7c16b83e | 13740 | CORE_ADDR pc) |
1aafd4da | 13741 | { |
40cb8ca5 | 13742 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13743 | if (loc->inserted |
13744 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13745 | return 1; | |
1aafd4da | 13746 | |
7c16b83e | 13747 | return 0; |
ef370185 JB |
13748 | } |
13749 | ||
13750 | /* Check whether a software single-step breakpoint is inserted at | |
13751 | PC. */ | |
13752 | ||
13753 | int | |
accd0bcd | 13754 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13755 | CORE_ADDR pc) |
13756 | { | |
43892fdf | 13757 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13758 | { |
13759 | if (bpt->type == bp_single_step | |
13760 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13761 | return 1; | |
13762 | } | |
13763 | return 0; | |
1aafd4da UW |
13764 | } |
13765 | ||
1042e4c0 SS |
13766 | /* Tracepoint-specific operations. */ |
13767 | ||
13768 | /* Set tracepoint count to NUM. */ | |
13769 | static void | |
13770 | set_tracepoint_count (int num) | |
13771 | { | |
13772 | tracepoint_count = num; | |
4fa62494 | 13773 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13774 | } |
13775 | ||
70221824 | 13776 | static void |
0b39b52e | 13777 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13778 | { |
264f9890 PA |
13779 | location_spec_up locspec = string_to_location_spec (&arg, |
13780 | current_language); | |
13781 | const struct breakpoint_ops *ops = breakpoint_ops_for_location_spec | |
13782 | (locspec.get (), true /* is_tracepoint */); | |
55aa24fb | 13783 | |
558a9d82 | 13784 | create_breakpoint (get_current_arch (), |
264f9890 | 13785 | locspec.get (), |
10a636cc | 13786 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13787 | 0 /* tempflag */, |
13788 | bp_tracepoint /* type_wanted */, | |
13789 | 0 /* Ignore count */, | |
13790 | pending_break_support, | |
13791 | ops, | |
13792 | from_tty, | |
13793 | 1 /* enabled */, | |
13794 | 0 /* internal */, 0); | |
1042e4c0 SS |
13795 | } |
13796 | ||
70221824 | 13797 | static void |
0b39b52e | 13798 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13799 | { |
264f9890 PA |
13800 | location_spec_up locspec = string_to_location_spec (&arg, |
13801 | current_language); | |
558a9d82 | 13802 | create_breakpoint (get_current_arch (), |
264f9890 | 13803 | locspec.get (), |
10a636cc | 13804 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13805 | 0 /* tempflag */, |
13806 | bp_fast_tracepoint /* type_wanted */, | |
13807 | 0 /* Ignore count */, | |
13808 | pending_break_support, | |
74421c0b | 13809 | &code_breakpoint_ops, |
558a9d82 YQ |
13810 | from_tty, |
13811 | 1 /* enabled */, | |
13812 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13813 | } |
13814 | ||
13815 | /* strace command implementation. Creates a static tracepoint. */ | |
13816 | ||
70221824 | 13817 | static void |
0b39b52e | 13818 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13819 | { |
a678887d | 13820 | const struct breakpoint_ops *ops; |
264f9890 | 13821 | location_spec_up locspec; |
7b572efb | 13822 | enum bptype type; |
983af33b SDJ |
13823 | |
13824 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13825 | or with a normal static tracepoint. */ | |
61012eef | 13826 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13827 | { |
13828 | ops = &strace_marker_breakpoint_ops; | |
264f9890 PA |
13829 | locspec = new_linespec_location_spec (&arg, |
13830 | symbol_name_match_type::FULL); | |
7b572efb | 13831 | type = bp_static_marker_tracepoint; |
f00aae0f | 13832 | } |
983af33b | 13833 | else |
f00aae0f | 13834 | { |
74421c0b | 13835 | ops = &code_breakpoint_ops; |
264f9890 | 13836 | locspec = string_to_location_spec (&arg, current_language); |
7b572efb | 13837 | type = bp_static_tracepoint; |
f00aae0f | 13838 | } |
983af33b | 13839 | |
558a9d82 | 13840 | create_breakpoint (get_current_arch (), |
264f9890 | 13841 | locspec.get (), |
10a636cc | 13842 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 | 13843 | 0 /* tempflag */, |
7b572efb | 13844 | type /* type_wanted */, |
558a9d82 YQ |
13845 | 0 /* Ignore count */, |
13846 | pending_break_support, | |
13847 | ops, | |
13848 | from_tty, | |
13849 | 1 /* enabled */, | |
13850 | 0 /* internal */, 0); | |
7a697b8d SS |
13851 | } |
13852 | ||
409873ef SS |
13853 | /* Set up a fake reader function that gets command lines from a linked |
13854 | list that was acquired during tracepoint uploading. */ | |
13855 | ||
13856 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13857 | static int next_cmd; |
409873ef | 13858 | |
f8631e5e SM |
13859 | static const char * |
13860 | read_uploaded_action (std::string &buffer) | |
409873ef | 13861 | { |
a18ba4e4 | 13862 | char *rslt = nullptr; |
409873ef | 13863 | |
a18ba4e4 SM |
13864 | if (next_cmd < this_utp->cmd_strings.size ()) |
13865 | { | |
67aa1f3c | 13866 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13867 | next_cmd++; |
13868 | } | |
409873ef SS |
13869 | |
13870 | return rslt; | |
13871 | } | |
13872 | ||
00bf0b85 SS |
13873 | /* Given information about a tracepoint as recorded on a target (which |
13874 | can be either a live system or a trace file), attempt to create an | |
13875 | equivalent GDB tracepoint. This is not a reliable process, since | |
13876 | the target does not necessarily have all the information used when | |
13877 | the tracepoint was originally defined. */ | |
13878 | ||
d9b3f62e | 13879 | struct tracepoint * |
00bf0b85 | 13880 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13881 | { |
f2fc3015 TT |
13882 | const char *addr_str; |
13883 | char small_buf[100]; | |
d9b3f62e | 13884 | struct tracepoint *tp; |
fd9b8c24 | 13885 | |
409873ef | 13886 | if (utp->at_string) |
67aa1f3c | 13887 | addr_str = utp->at_string.get (); |
409873ef SS |
13888 | else |
13889 | { | |
13890 | /* In the absence of a source location, fall back to raw | |
13891 | address. Since there is no way to confirm that the address | |
13892 | means the same thing as when the trace was started, warn the | |
13893 | user. */ | |
3e43a32a MS |
13894 | warning (_("Uploaded tracepoint %d has no " |
13895 | "source location, using raw address"), | |
409873ef | 13896 | utp->number); |
8c042590 | 13897 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13898 | addr_str = small_buf; |
13899 | } | |
13900 | ||
13901 | /* There's not much we can do with a sequence of bytecodes. */ | |
13902 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13903 | warning (_("Uploaded tracepoint %d condition " |
13904 | "has no source form, ignoring it"), | |
409873ef | 13905 | utp->number); |
d5551862 | 13906 | |
264f9890 PA |
13907 | location_spec_up locspec = string_to_location_spec (&addr_str, |
13908 | current_language); | |
8cdf0e15 | 13909 | if (!create_breakpoint (get_current_arch (), |
264f9890 | 13910 | locspec.get (), |
67aa1f3c | 13911 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13912 | false /* force_condition */, |
e7e0cddf | 13913 | 0 /* parse cond/thread */, |
8cdf0e15 | 13914 | 0 /* tempflag */, |
0fb4aa4b | 13915 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13916 | 0 /* Ignore count */, |
13917 | pending_break_support, | |
74421c0b | 13918 | &code_breakpoint_ops, |
8cdf0e15 | 13919 | 0 /* from_tty */, |
84f4c1fe | 13920 | utp->enabled /* enabled */, |
44f238bb PA |
13921 | 0 /* internal */, |
13922 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13923 | return NULL; |
fd9b8c24 | 13924 | |
409873ef | 13925 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13926 | tp = get_tracepoint (tracepoint_count); |
13927 | gdb_assert (tp != NULL); | |
d5551862 | 13928 | |
00bf0b85 SS |
13929 | if (utp->pass > 0) |
13930 | { | |
8c042590 | 13931 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13932 | tp->number); |
00bf0b85 | 13933 | |
409873ef | 13934 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13935 | } |
13936 | ||
409873ef SS |
13937 | /* If we have uploaded versions of the original commands, set up a |
13938 | special-purpose "reader" function and call the usual command line | |
13939 | reader, then pass the result to the breakpoint command-setting | |
13940 | function. */ | |
a18ba4e4 | 13941 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13942 | { |
12973681 | 13943 | counted_command_line cmd_list; |
00bf0b85 | 13944 | |
409873ef | 13945 | this_utp = utp; |
3149d8c1 | 13946 | next_cmd = 0; |
d5551862 | 13947 | |
60b3cef2 | 13948 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13949 | |
c1fc2657 | 13950 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13951 | } |
a18ba4e4 SM |
13952 | else if (!utp->actions.empty () |
13953 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
13954 | warning (_("Uploaded tracepoint %d actions " |
13955 | "have no source form, ignoring them"), | |
409873ef | 13956 | utp->number); |
00bf0b85 | 13957 | |
f196051f | 13958 | /* Copy any status information that might be available. */ |
c1fc2657 | 13959 | tp->hit_count = utp->hit_count; |
f196051f SS |
13960 | tp->traceframe_usage = utp->traceframe_usage; |
13961 | ||
00bf0b85 | 13962 | return tp; |
d9b3f62e | 13963 | } |
00bf0b85 | 13964 | |
1042e4c0 SS |
13965 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13966 | omitted. */ | |
13967 | ||
13968 | static void | |
1d12d88f | 13969 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 13970 | { |
79a45e25 | 13971 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13972 | int num_printed; |
1042e4c0 | 13973 | |
5c458ae8 | 13974 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
13975 | |
13976 | if (num_printed == 0) | |
1042e4c0 | 13977 | { |
e5a67952 | 13978 | if (args == NULL || *args == '\0') |
112e8700 | 13979 | uiout->message ("No tracepoints.\n"); |
d77f58be | 13980 | else |
112e8700 | 13981 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13982 | } |
ad443146 SS |
13983 | |
13984 | default_collect_info (); | |
1042e4c0 SS |
13985 | } |
13986 | ||
4a64f543 | 13987 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13988 | Not supported by all targets. */ |
13989 | static void | |
5fed81ff | 13990 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13991 | { |
13992 | enable_command (args, from_tty); | |
13993 | } | |
13994 | ||
4a64f543 | 13995 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13996 | Not supported by all targets. */ |
13997 | static void | |
5fed81ff | 13998 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13999 | { |
14000 | disable_command (args, from_tty); | |
14001 | } | |
14002 | ||
4a64f543 | 14003 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14004 | static void |
4495129a | 14005 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14006 | { |
1042e4c0 SS |
14007 | dont_repeat (); |
14008 | ||
14009 | if (arg == 0) | |
14010 | { | |
14011 | int breaks_to_delete = 0; | |
14012 | ||
14013 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14014 | Do not delete internal or call-dummy breakpoints, these |
14015 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14016 | argument. */ |
f6d17b2b | 14017 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 14018 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
14019 | { |
14020 | breaks_to_delete = 1; | |
14021 | break; | |
14022 | } | |
1042e4c0 SS |
14023 | |
14024 | /* Ask user only if there are some breakpoints to delete. */ | |
14025 | if (!from_tty | |
14026 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14027 | { | |
1428b37a | 14028 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14029 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14030 | delete_breakpoint (b); |
1042e4c0 SS |
14031 | } |
14032 | } | |
14033 | else | |
48649e1b | 14034 | map_breakpoint_numbers |
b926417a | 14035 | (arg, [&] (breakpoint *br) |
48649e1b | 14036 | { |
b926417a | 14037 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14038 | }); |
1042e4c0 SS |
14039 | } |
14040 | ||
197f0a60 TT |
14041 | /* Helper function for trace_pass_command. */ |
14042 | ||
14043 | static void | |
d9b3f62e | 14044 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14045 | { |
d9b3f62e | 14046 | tp->pass_count = count; |
76727919 | 14047 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 14048 | if (from_tty) |
6cb06a8c TT |
14049 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
14050 | tp->number, count); | |
197f0a60 TT |
14051 | } |
14052 | ||
1042e4c0 SS |
14053 | /* Set passcount for tracepoint. |
14054 | ||
14055 | First command argument is passcount, second is tracepoint number. | |
14056 | If tracepoint number omitted, apply to most recently defined. | |
14057 | Also accepts special argument "all". */ | |
14058 | ||
14059 | static void | |
0b39b52e | 14060 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14061 | { |
d9b3f62e | 14062 | struct tracepoint *t1; |
0b39b52e | 14063 | ULONGEST count; |
1042e4c0 SS |
14064 | |
14065 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14066 | error (_("passcount command requires an " |
14067 | "argument (count + optional TP num)")); | |
1042e4c0 | 14068 | |
0b39b52e | 14069 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14070 | |
529480d0 | 14071 | args = skip_spaces (args); |
1042e4c0 SS |
14072 | if (*args && strncasecmp (args, "all", 3) == 0) |
14073 | { | |
14074 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14075 | if (*args) |
14076 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14077 | |
f6d17b2b | 14078 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
14079 | { |
14080 | t1 = (struct tracepoint *) b; | |
14081 | trace_pass_set_count (t1, count, from_tty); | |
14082 | } | |
197f0a60 TT |
14083 | } |
14084 | else if (*args == '\0') | |
1042e4c0 | 14085 | { |
5fa1d40e | 14086 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14087 | if (t1) |
197f0a60 TT |
14088 | trace_pass_set_count (t1, count, from_tty); |
14089 | } | |
14090 | else | |
14091 | { | |
bfd28288 PA |
14092 | number_or_range_parser parser (args); |
14093 | while (!parser.finished ()) | |
1042e4c0 | 14094 | { |
bfd28288 | 14095 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14096 | if (t1) |
14097 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14098 | } |
14099 | } | |
1042e4c0 SS |
14100 | } |
14101 | ||
d9b3f62e | 14102 | struct tracepoint * |
1042e4c0 SS |
14103 | get_tracepoint (int num) |
14104 | { | |
f6d17b2b | 14105 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14106 | if (t->number == num) |
d9b3f62e | 14107 | return (struct tracepoint *) t; |
1042e4c0 SS |
14108 | |
14109 | return NULL; | |
14110 | } | |
14111 | ||
d5551862 SS |
14112 | /* Find the tracepoint with the given target-side number (which may be |
14113 | different from the tracepoint number after disconnecting and | |
14114 | reconnecting). */ | |
14115 | ||
d9b3f62e | 14116 | struct tracepoint * |
d5551862 SS |
14117 | get_tracepoint_by_number_on_target (int num) |
14118 | { | |
f6d17b2b | 14119 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14120 | { |
14121 | struct tracepoint *t = (struct tracepoint *) b; | |
14122 | ||
14123 | if (t->number_on_target == num) | |
14124 | return t; | |
14125 | } | |
d5551862 SS |
14126 | |
14127 | return NULL; | |
14128 | } | |
14129 | ||
1042e4c0 | 14130 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14131 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14132 | If the argument is missing, the most recent tracepoint |
14133 | (tracepoint_count) is returned. */ | |
14134 | ||
d9b3f62e | 14135 | struct tracepoint * |
0b39b52e | 14136 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14137 | number_or_range_parser *parser) |
1042e4c0 | 14138 | { |
1042e4c0 | 14139 | int tpnum; |
0b39b52e | 14140 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14141 | |
bfd28288 | 14142 | if (parser != NULL) |
197f0a60 | 14143 | { |
bfd28288 PA |
14144 | gdb_assert (!parser->finished ()); |
14145 | tpnum = parser->get_number (); | |
197f0a60 TT |
14146 | } |
14147 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14148 | tpnum = tracepoint_count; |
1042e4c0 | 14149 | else |
197f0a60 | 14150 | tpnum = get_number (arg); |
1042e4c0 SS |
14151 | |
14152 | if (tpnum <= 0) | |
14153 | { | |
14154 | if (instring && *instring) | |
6cb06a8c TT |
14155 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
14156 | instring); | |
1042e4c0 | 14157 | else |
6cb06a8c | 14158 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
14159 | return NULL; |
14160 | } | |
14161 | ||
f6d17b2b | 14162 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14163 | if (t->number == tpnum) |
d9b3f62e | 14164 | return (struct tracepoint *) t; |
1042e4c0 | 14165 | |
6cb06a8c | 14166 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
14167 | return NULL; |
14168 | } | |
14169 | ||
d9b3f62e | 14170 | void |
04d0163c | 14171 | breakpoint::print_recreate_thread (struct ui_file *fp) const |
d9b3f62e | 14172 | { |
04d0163c | 14173 | if (thread != -1) |
442716d4 AB |
14174 | { |
14175 | struct thread_info *thr = find_thread_global_id (thread); | |
14176 | gdb_printf (fp, " thread %s", print_full_thread_id (thr)); | |
14177 | } | |
d9b3f62e | 14178 | |
2ecee236 | 14179 | if (task != -1) |
04d0163c | 14180 | gdb_printf (fp, " task %d", task); |
d9b3f62e | 14181 | |
6cb06a8c | 14182 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
14183 | } |
14184 | ||
6149aea9 PA |
14185 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14186 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14187 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14188 | true. */ |
6149aea9 | 14189 | |
1042e4c0 | 14190 | static void |
4495129a | 14191 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14192 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 14193 | { |
d8de7963 | 14194 | bool any = false; |
6149aea9 | 14195 | int extra_trace_bits = 0; |
1042e4c0 | 14196 | |
6149aea9 PA |
14197 | if (filename == 0 || *filename == 0) |
14198 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14199 | |
14200 | /* See if we have anything to save. */ | |
43892fdf | 14201 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14202 | { |
14203 | /* Skip internal and momentary breakpoints. */ | |
14204 | if (!user_breakpoint_p (tp)) | |
14205 | continue; | |
6149aea9 | 14206 | |
01add95b SM |
14207 | /* If we have a filter, only save the breakpoints it accepts. */ |
14208 | if (filter && !filter (tp)) | |
14209 | continue; | |
6149aea9 | 14210 | |
d8de7963 | 14211 | any = true; |
6149aea9 | 14212 | |
01add95b SM |
14213 | if (is_tracepoint (tp)) |
14214 | { | |
14215 | extra_trace_bits = 1; | |
6149aea9 | 14216 | |
01add95b SM |
14217 | /* We can stop searching. */ |
14218 | break; | |
14219 | } | |
14220 | } | |
6149aea9 PA |
14221 | |
14222 | if (!any) | |
1042e4c0 | 14223 | { |
6149aea9 | 14224 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14225 | return; |
14226 | } | |
14227 | ||
ee0c3293 | 14228 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14229 | |
14230 | stdio_file fp; | |
14231 | ||
ee0c3293 | 14232 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14233 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14234 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14235 | |
6149aea9 | 14236 | if (extra_trace_bits) |
d7e74731 | 14237 | save_trace_state_variables (&fp); |
8bf6485c | 14238 | |
43892fdf | 14239 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14240 | { |
14241 | /* Skip internal and momentary breakpoints. */ | |
14242 | if (!user_breakpoint_p (tp)) | |
14243 | continue; | |
8bf6485c | 14244 | |
01add95b SM |
14245 | /* If we have a filter, only save the breakpoints it accepts. */ |
14246 | if (filter && !filter (tp)) | |
14247 | continue; | |
6149aea9 | 14248 | |
c47614fe | 14249 | tp->print_recreate (&fp); |
1042e4c0 | 14250 | |
01add95b SM |
14251 | /* Note, we can't rely on tp->number for anything, as we can't |
14252 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14253 | instead. */ | |
6149aea9 | 14254 | |
01add95b | 14255 | if (tp->cond_string) |
6f781ee3 | 14256 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 14257 | |
01add95b SM |
14258 | if (tp->ignore_count) |
14259 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 14260 | |
01add95b SM |
14261 | if (tp->type != bp_dprintf && tp->commands) |
14262 | { | |
14263 | fp.puts (" commands\n"); | |
1042e4c0 | 14264 | |
992aeed8 TT |
14265 | ui_out_redirect_pop redir (current_uiout, &fp); |
14266 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
6149aea9 | 14267 | |
01add95b SM |
14268 | fp.puts (" end\n"); |
14269 | } | |
6149aea9 | 14270 | |
01add95b SM |
14271 | if (tp->enable_state == bp_disabled) |
14272 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 14273 | |
01add95b SM |
14274 | /* If this is a multi-location breakpoint, check if the locations |
14275 | should be individually disabled. Watchpoint locations are | |
14276 | special, and not user visible. */ | |
14277 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14278 | { | |
14279 | int n = 1; | |
40cb8ca5 | 14280 | |
01add95b SM |
14281 | for (bp_location *loc : tp->locations ()) |
14282 | { | |
14283 | if (!loc->enabled) | |
14284 | fp.printf ("disable $bpnum.%d\n", n); | |
14285 | ||
14286 | n++; | |
14287 | } | |
14288 | } | |
14289 | } | |
8bf6485c | 14290 | |
e0700ba4 SM |
14291 | if (extra_trace_bits && !default_collect.empty ()) |
14292 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14293 | |
1042e4c0 | 14294 | if (from_tty) |
6cb06a8c | 14295 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14296 | } |
14297 | ||
14298 | /* The `save breakpoints' command. */ | |
14299 | ||
14300 | static void | |
4495129a | 14301 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14302 | { |
14303 | save_breakpoints (args, from_tty, NULL); | |
14304 | } | |
14305 | ||
14306 | /* The `save tracepoints' command. */ | |
14307 | ||
14308 | static void | |
4495129a | 14309 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14310 | { |
14311 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14312 | } |
14313 | ||
c906108c | 14314 | \f |
629500fa KS |
14315 | /* This help string is used to consolidate all the help string for specifying |
14316 | locations used by several commands. */ | |
14317 | ||
264f9890 | 14318 | #define LOCATION_SPEC_HELP_STRING \ |
629500fa KS |
14319 | "Linespecs are colon-separated lists of location parameters, such as\n\ |
14320 | source filename, function name, label name, and line number.\n\ | |
14321 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14322 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14323 | \"factorial.c:fact:the_top\".\n\ | |
14324 | \n\ | |
14325 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14326 | program. Example: To specify the fourth byte past the start function\n\ | |
14327 | \"main\", use \"*main + 4\".\n\ | |
14328 | \n\ | |
14329 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14330 | syntax to specify location parameters.\n\ | |
14331 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14332 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14333 | -function fact -label the_top\".\n\ |
14334 | \n\ | |
14335 | By default, a specified function is matched against the program's\n\ | |
14336 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14337 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14338 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14339 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14340 | specified name as a complete fully-qualified name instead." |
629500fa | 14341 | |
4a64f543 MS |
14342 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14343 | commands. It is defined as a macro to prevent duplication. | |
14344 | COMMAND should be a string constant containing the name of the | |
14345 | command. */ | |
629500fa | 14346 | |
31e2b00f | 14347 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14348 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14349 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14350 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14351 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14352 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14353 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14354 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14355 | below.\n\ | |
14356 | \n\ | |
dc10affe PA |
14357 | With no LOCATION, uses current execution address of the selected\n\ |
14358 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14359 | \n\ |
14360 | THREADNUM is the number from \"info threads\".\n\ | |
14361 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14362 | \n\ |
14363 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14364 | it is invalid for all current locations.\n\ | |
264f9890 | 14365 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14366 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14367 | conditions are different.\n\ | |
31e2b00f AS |
14368 | \n\ |
14369 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14370 | ||
44feb3ce TT |
14371 | /* List of subcommands for "catch". */ |
14372 | static struct cmd_list_element *catch_cmdlist; | |
14373 | ||
14374 | /* List of subcommands for "tcatch". */ | |
14375 | static struct cmd_list_element *tcatch_cmdlist; | |
14376 | ||
9ac4176b | 14377 | void |
a121b7c1 | 14378 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14379 | cmd_func_ftype *func, |
625e8578 | 14380 | completer_ftype *completer, |
44feb3ce TT |
14381 | void *user_data_catch, |
14382 | void *user_data_tcatch) | |
14383 | { | |
14384 | struct cmd_list_element *command; | |
14385 | ||
0450cc4c | 14386 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14387 | &catch_cmdlist); |
5538b03c | 14388 | command->func = func; |
0f8e2034 | 14389 | command->set_context (user_data_catch); |
a96d9b2e | 14390 | set_cmd_completer (command, completer); |
44feb3ce | 14391 | |
0450cc4c | 14392 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14393 | &tcatch_cmdlist); |
5538b03c | 14394 | command->func = func; |
0f8e2034 | 14395 | command->set_context (user_data_tcatch); |
a96d9b2e | 14396 | set_cmd_completer (command, completer); |
44feb3ce TT |
14397 | } |
14398 | ||
d8de7963 AB |
14399 | /* False if any of the breakpoint's locations could be a location where |
14400 | functions have been inlined, true otherwise. */ | |
0574c78f | 14401 | |
d8de7963 | 14402 | static bool |
0574c78f GB |
14403 | is_non_inline_function (struct breakpoint *b) |
14404 | { | |
14405 | /* The shared library event breakpoint is set on the address of a | |
14406 | non-inline function. */ | |
d8de7963 | 14407 | return (b->type == bp_shlib_event); |
0574c78f GB |
14408 | } |
14409 | ||
14410 | /* Nonzero if the specified PC cannot be a location where functions | |
14411 | have been inlined. */ | |
14412 | ||
14413 | int | |
accd0bcd | 14414 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14415 | const target_waitstatus &ws) |
0574c78f | 14416 | { |
43892fdf | 14417 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14418 | { |
14419 | if (!is_non_inline_function (b)) | |
14420 | continue; | |
14421 | ||
40cb8ca5 | 14422 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14423 | { |
14424 | if (!bl->shlib_disabled | |
09ac7c10 | 14425 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14426 | return 1; |
14427 | } | |
14428 | } | |
14429 | ||
14430 | return 0; | |
14431 | } | |
14432 | ||
2f202fde JK |
14433 | /* Remove any references to OBJFILE which is going to be freed. */ |
14434 | ||
14435 | void | |
14436 | breakpoint_free_objfile (struct objfile *objfile) | |
14437 | { | |
48d7020b | 14438 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14439 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14440 | loc->symtab = NULL; |
14441 | } | |
14442 | ||
8bfd80db YQ |
14443 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14444 | ||
14445 | static struct cmd_list_element *enablebreaklist = NULL; | |
14446 | ||
8588b356 SM |
14447 | /* See breakpoint.h. */ |
14448 | ||
14449 | cmd_list_element *commands_cmd_element = nullptr; | |
14450 | ||
6c265988 | 14451 | void _initialize_breakpoint (); |
c906108c | 14452 | void |
6c265988 | 14453 | _initialize_breakpoint () |
c906108c SS |
14454 | { |
14455 | struct cmd_list_element *c; | |
14456 | ||
c90e7d63 SM |
14457 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14458 | "breakpoint"); | |
14459 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14460 | "breakpoint"); | |
14461 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14462 | "breakpoint"); | |
84acb35a | 14463 | |
c906108c SS |
14464 | breakpoint_chain = 0; |
14465 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14466 | before a breakpoint is set. */ | |
14467 | breakpoint_count = 0; | |
14468 | ||
1042e4c0 SS |
14469 | tracepoint_count = 0; |
14470 | ||
1bedd215 AC |
14471 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14472 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14473 | Usage is `ignore N COUNT'.")); | |
c906108c | 14474 | |
8588b356 SM |
14475 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14476 | commands_command, _("\ | |
18da0c51 MG |
14477 | Set commands to be executed when the given breakpoints are hit.\n\ |
14478 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14479 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14480 | (e.g. `5-7').\n\ | |
c906108c SS |
14481 | With no argument, the targeted breakpoint is the last one set.\n\ |
14482 | The commands themselves follow starting on the next line.\n\ | |
14483 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14484 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14485 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14486 | |
b1d4d8d1 TBA |
14487 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14488 | static std::string condition_command_help | |
14489 | = gdb::option::build_help (_("\ | |
1bedd215 | 14490 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14491 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14492 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14493 | \n\ |
14494 | Options:\n\ | |
14495 | %OPTIONS%"), cc_opts); | |
14496 | ||
14497 | c = add_com ("condition", class_breakpoint, condition_command, | |
14498 | condition_command_help.c_str ()); | |
14499 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14500 | |
1bedd215 | 14501 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14502 | Set a temporary breakpoint.\n\ |
c906108c SS |
14503 | Like \"break\" except the breakpoint is only temporary,\n\ |
14504 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14505 | by using \"enable delete\" on the breakpoint number.\n\ |
14506 | \n" | |
14507 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14508 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14509 | |
1bedd215 | 14510 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14511 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14512 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14513 | some target hardware may not have this support.\n\ |
14514 | \n" | |
14515 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14516 | set_cmd_completer (c, location_completer); |
c906108c | 14517 | |
1bedd215 | 14518 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14519 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14520 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14521 | so it will be deleted when hit.\n\ |
14522 | \n" | |
14523 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14524 | set_cmd_completer (c, location_completer); |
c906108c | 14525 | |
3947f654 SM |
14526 | cmd_list_element *enable_cmd |
14527 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14528 | Enable all or some breakpoints.\n\ |
14529 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14530 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14531 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14532 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14533 | With a subcommand you can enable temporarily."), |
3947f654 | 14534 | &enablelist, 1, &cmdlist); |
c906108c | 14535 | |
3947f654 | 14536 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14537 | |
84951ab5 | 14538 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14539 | Enable all or some breakpoints.\n\ |
14540 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14541 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14542 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14543 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14544 | &enablebreaklist, 1, &enablelist); |
c906108c | 14545 | |
1a966eab | 14546 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14547 | Enable some breakpoints for one hit.\n\ |
14548 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14549 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14550 | &enablebreaklist); |
14551 | ||
1a966eab | 14552 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14553 | Enable some breakpoints and delete when hit.\n\ |
14554 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14555 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14556 | &enablebreaklist); |
14557 | ||
816338b5 | 14558 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14559 | Enable some breakpoints for COUNT hits.\n\ |
14560 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14561 | If a breakpoint is hit while enabled in this fashion,\n\ |
14562 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14563 | &enablebreaklist); | |
14564 | ||
1a966eab | 14565 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14566 | Enable some breakpoints and delete when hit.\n\ |
14567 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14568 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14569 | &enablelist); |
14570 | ||
1a966eab | 14571 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14572 | Enable some breakpoints for one hit.\n\ |
14573 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14574 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14575 | &enablelist); |
14576 | ||
14577 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14578 | Enable some breakpoints for COUNT hits.\n\ |
14579 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14580 | If a breakpoint is hit while enabled in this fashion,\n\ |
14581 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14582 | &enablelist); |
14583 | ||
3947f654 SM |
14584 | cmd_list_element *disable_cmd |
14585 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14586 | Disable all or some breakpoints.\n\ |
14587 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14588 | Arguments are breakpoint numbers with spaces in between.\n\ |
14589 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14590 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14591 | &disablelist, 1, &cmdlist); |
14592 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14593 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14594 | |
57b4f16e | 14595 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14596 | Disable all or some breakpoints.\n\ |
14597 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14598 | Arguments are breakpoint numbers with spaces in between.\n\ |
14599 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14600 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14601 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14602 | &disablelist); |
14603 | ||
3947f654 SM |
14604 | cmd_list_element *delete_cmd |
14605 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14606 | Delete all or some breakpoints.\n\ |
14607 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14608 | Arguments are breakpoint numbers with spaces in between.\n\ |
14609 | To delete all breakpoints, give no argument.\n\ | |
14610 | \n\ | |
590042fc | 14611 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14612 | &deletelist, 1, &cmdlist); |
14613 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14614 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14615 | |
57b4f16e | 14616 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14617 | Delete all or some breakpoints or auto-display expressions.\n\ |
14618 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14619 | Arguments are breakpoint numbers with spaces in between.\n\ |
14620 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14621 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14622 | &deletelist); |
14623 | ||
3947f654 SM |
14624 | cmd_list_element *clear_cmd |
14625 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14626 | Clear breakpoint at specified location.\n\ |
14627 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14628 | \n\ |
14629 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14630 | is executing in.\n" |
264f9890 | 14631 | "\n" LOCATION_SPEC_HELP_STRING "\n\n\ |
1bedd215 | 14632 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14633 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14634 | |
3947f654 SM |
14635 | cmd_list_element *break_cmd |
14636 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14637 | Set breakpoint at specified location.\n" |
31e2b00f | 14638 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14639 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14640 | |
3947f654 SM |
14641 | add_com_alias ("b", break_cmd, class_run, 1); |
14642 | add_com_alias ("br", break_cmd, class_run, 1); | |
14643 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14644 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14645 | |
e0f25bd9 SM |
14646 | cmd_list_element *info_breakpoints_cmd |
14647 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14648 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14649 | The \"Type\" column indicates one of:\n\ |
14650 | \tbreakpoint - normal breakpoint\n\ | |
14651 | \twatchpoint - watchpoint\n\ | |
14652 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14653 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14654 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14655 | address and file/line number respectively.\n\ |
14656 | \n\ | |
14657 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14658 | are set to the address of the last breakpoint listed unless the command\n\ |
14659 | is prefixed with \"server \".\n\n\ | |
c906108c | 14660 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14661 | breakpoint set.")); |
c906108c | 14662 | |
e0f25bd9 | 14663 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14664 | |
1a966eab AC |
14665 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14666 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14667 | The \"Type\" column indicates one of:\n\ |
14668 | \tbreakpoint - normal breakpoint\n\ | |
14669 | \twatchpoint - watchpoint\n\ | |
14670 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14671 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14672 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14673 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14674 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14675 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14676 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14677 | address and file/line number respectively.\n\ |
14678 | \n\ | |
14679 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14680 | are set to the address of the last breakpoint listed unless the command\n\ |
14681 | is prefixed with \"server \".\n\n\ | |
c906108c | 14682 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14683 | breakpoint set."), |
c906108c SS |
14684 | &maintenanceinfolist); |
14685 | ||
3b6acaee | 14686 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14687 | Set catchpoints to catch events."), |
2f822da5 | 14688 | &catch_cmdlist, |
3b6acaee | 14689 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14690 | |
3b6acaee | 14691 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14692 | Set temporary catchpoints to catch events."), |
2f822da5 | 14693 | &tcatch_cmdlist, |
3b6acaee | 14694 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14695 | |
a15a5258 AB |
14696 | const auto opts = make_watch_options_def_group (nullptr); |
14697 | ||
14698 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14699 | Set a watchpoint for EXPRESSION.\n\ | |
14700 | Usage: watch [-location] EXPRESSION\n\ | |
14701 | \n\ | |
14702 | Options:\n\ | |
14703 | %OPTIONS%\n\ | |
14704 | \n\ | |
c906108c | 14705 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14706 | an expression changes."), opts); |
14707 | c = add_com ("watch", class_breakpoint, watch_command, | |
14708 | watch_help.c_str ()); | |
14709 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14710 | ||
14711 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14712 | Set a read watchpoint for EXPRESSION.\n\ | |
14713 | Usage: rwatch [-location] EXPRESSION\n\ | |
14714 | \n\ | |
14715 | Options:\n\ | |
14716 | %OPTIONS%\n\ | |
14717 | \n\ | |
14718 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14719 | an expression is read."), opts); | |
14720 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14721 | rwatch_help.c_str ()); | |
14722 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14723 | ||
14724 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14725 | Set an access watchpoint for EXPRESSION.\n\ | |
14726 | Usage: awatch [-location] EXPRESSION\n\ | |
14727 | \n\ | |
14728 | Options:\n\ | |
14729 | %OPTIONS%\n\ | |
14730 | \n\ | |
14731 | An access watchpoint stops execution of your program whenever the value\n\ | |
14732 | of an expression is either read or written."), opts); | |
14733 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14734 | awatch_help.c_str ()); | |
14735 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14736 | |
11db9430 | 14737 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14738 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14739 | |
920d2a44 AC |
14740 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14741 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14742 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14743 | &can_use_hw_watchpoints, _("\ | |
14744 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14745 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14746 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14747 | such is available. (However, any hardware watchpoints that were\n\ | |
14748 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14749 | hardware.)"), |
14750 | NULL, | |
920d2a44 | 14751 | show_can_use_hw_watchpoints, |
85c07804 | 14752 | &setlist, &showlist); |
c906108c SS |
14753 | |
14754 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14755 | |
1042e4c0 SS |
14756 | /* Tracepoint manipulation commands. */ |
14757 | ||
3947f654 SM |
14758 | cmd_list_element *trace_cmd |
14759 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14760 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14761 | \n" |
14762 | BREAK_ARGS_HELP ("trace") "\n\ | |
14763 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14764 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14765 | |
3947f654 SM |
14766 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14767 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14768 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14769 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14770 | |
7a697b8d | 14771 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14772 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14773 | \n" |
14774 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14775 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14776 | set_cmd_completer (c, location_completer); | |
14777 | ||
0fb4aa4b | 14778 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14779 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14780 | \n\ |
14781 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14782 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14783 | or -m MARKER_ID.\n\n\ | |
14784 | If a marker id is specified, probe the marker with that name. With\n\ | |
14785 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14786 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14787 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14788 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14789 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14790 | \n\ | |
14791 | CONDITION is a boolean expression.\n\ | |
264f9890 | 14792 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14793 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14794 | conditions are different.\n\ | |
0fb4aa4b PA |
14795 | \n\ |
14796 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14797 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14798 | set_cmd_completer (c, location_completer); | |
14799 | ||
e0f25bd9 SM |
14800 | cmd_list_element *info_tracepoints_cmd |
14801 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14802 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14803 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14804 | last tracepoint set.")); | |
14805 | ||
e0f25bd9 | 14806 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14807 | |
5e84b7ee SM |
14808 | cmd_list_element *delete_tracepoints_cmd |
14809 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14810 | Delete specified tracepoints.\n\ |
14811 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14812 | No argument means delete all tracepoints."), | |
14813 | &deletelist); | |
5e84b7ee | 14814 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14815 | |
14816 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14817 | Disable specified tracepoints.\n\ | |
14818 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14819 | No argument means disable all tracepoints."), | |
14820 | &disablelist); | |
14821 | deprecate_cmd (c, "disable"); | |
14822 | ||
14823 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14824 | Enable specified tracepoints.\n\ | |
14825 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14826 | No argument means enable all tracepoints."), | |
14827 | &enablelist); | |
14828 | deprecate_cmd (c, "enable"); | |
14829 | ||
14830 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14831 | Set the passcount for a tracepoint.\n\ | |
14832 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14833 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14834 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14835 | ||
0743fc83 TT |
14836 | add_basic_prefix_cmd ("save", class_breakpoint, |
14837 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 14838 | &save_cmdlist, |
0743fc83 | 14839 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
14840 | |
14841 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14842 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14843 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14844 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14845 | session to restore them."), | |
14846 | &save_cmdlist); | |
14847 | set_cmd_completer (c, filename_completer); | |
14848 | ||
3947f654 SM |
14849 | cmd_list_element *save_tracepoints_cmd |
14850 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14851 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14852 | Use the 'source' command in another debug session to restore them."), |
14853 | &save_cmdlist); | |
3947f654 | 14854 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 14855 | |
3947f654 | 14856 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
14857 | deprecate_cmd (c, "save tracepoints"); |
14858 | ||
f54bdb6d SM |
14859 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
14860 | _("\ | |
590042fc | 14861 | Breakpoint specific settings.\n\ |
fa8d40ab | 14862 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14863 | pending breakpoint behavior."), |
f54bdb6d | 14864 | _("\ |
590042fc | 14865 | Breakpoint specific settings.\n\ |
fa8d40ab | 14866 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14867 | pending breakpoint behavior."), |
f54bdb6d SM |
14868 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
14869 | &setlist, &showlist); | |
fa8d40ab | 14870 | |
7915a72c AC |
14871 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14872 | &pending_break_support, _("\ | |
14873 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14874 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14875 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14876 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14877 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14878 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14879 | NULL, |
920d2a44 | 14880 | show_pending_break_support, |
6e1d7d6c AC |
14881 | &breakpoint_set_cmdlist, |
14882 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14883 | |
14884 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14885 | |
14886 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14887 | &automatic_hardware_breakpoints, _("\ | |
14888 | Set automatic usage of hardware breakpoints."), _("\ | |
14889 | Show automatic usage of hardware breakpoints."), _("\ | |
14890 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14891 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14892 | a warning will be emitted for such breakpoints."), | |
14893 | NULL, | |
14894 | show_automatic_hardware_breakpoints, | |
14895 | &breakpoint_set_cmdlist, | |
14896 | &breakpoint_show_cmdlist); | |
74960c60 | 14897 | |
a25a5a45 PA |
14898 | add_setshow_boolean_cmd ("always-inserted", class_support, |
14899 | &always_inserted_mode, _("\ | |
74960c60 VP |
14900 | Set mode for inserting breakpoints."), _("\ |
14901 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
14902 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
14903 | they're created, kept inserted even when execution stops, and removed\n\ | |
14904 | only when the user deletes them. When this mode is off (the default),\n\ | |
14905 | breakpoints are inserted only when execution continues, and removed\n\ | |
14906 | when execution stops."), | |
72d0e2c5 YQ |
14907 | NULL, |
14908 | &show_always_inserted_mode, | |
14909 | &breakpoint_set_cmdlist, | |
14910 | &breakpoint_show_cmdlist); | |
f1310107 | 14911 | |
b775012e LM |
14912 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
14913 | condition_evaluation_enums, | |
14914 | &condition_evaluation_mode_1, _("\ | |
14915 | Set mode of breakpoint condition evaluation."), _("\ | |
14916 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 14917 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
14918 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
14919 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
14920 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
14921 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
14922 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 14923 | be set to \"host\"."), |
b775012e LM |
14924 | &set_condition_evaluation_mode, |
14925 | &show_condition_evaluation_mode, | |
14926 | &breakpoint_set_cmdlist, | |
14927 | &breakpoint_show_cmdlist); | |
14928 | ||
f1310107 TJB |
14929 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
14930 | Set a breakpoint for an address range.\n\ | |
14931 | break-range START-LOCATION, END-LOCATION\n\ | |
14932 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14933 | LINENUM, for that line in the current file,\n\ | |
14934 | FILE:LINENUM, for that line in that file,\n\ | |
14935 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 14936 | or the start of the range\n\ |
f1310107 TJB |
14937 | FUNCTION, for the first line in that function,\n\ |
14938 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14939 | *ADDRESS, for the instruction at that address.\n\ | |
14940 | \n\ | |
14941 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14942 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14943 | range (including START-LOCATION and END-LOCATION).")); | |
14944 | ||
e7e0cddf | 14945 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 14946 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 14947 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa | 14948 | location may be a linespec, explicit, or address location.\n" |
264f9890 | 14949 | "\n" LOCATION_SPEC_HELP_STRING)); |
e7e0cddf SS |
14950 | set_cmd_completer (c, location_completer); |
14951 | ||
14952 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
14953 | dprintf_style_enums, &dprintf_style, _("\ | |
14954 | Set the style of usage for dynamic printf."), _("\ | |
14955 | Show the style of usage for dynamic printf."), _("\ | |
14956 | This setting chooses how GDB will do a dynamic printf.\n\ | |
14957 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
14958 | console, as with the \"printf\" command.\n\ | |
14959 | If the value is \"call\", the print is done by calling a function in your\n\ | |
14960 | program; by default printf(), but you can choose a different function or\n\ | |
14961 | output stream by setting dprintf-function and dprintf-channel."), | |
14962 | update_dprintf_commands, NULL, | |
14963 | &setlist, &showlist); | |
14964 | ||
e7e0cddf SS |
14965 | add_setshow_string_cmd ("dprintf-function", class_support, |
14966 | &dprintf_function, _("\ | |
590042fc PW |
14967 | Set the function to use for dynamic printf."), _("\ |
14968 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14969 | update_dprintf_commands, NULL, |
14970 | &setlist, &showlist); | |
14971 | ||
e7e0cddf SS |
14972 | add_setshow_string_cmd ("dprintf-channel", class_support, |
14973 | &dprintf_channel, _("\ | |
590042fc PW |
14974 | Set the channel to use for dynamic printf."), _("\ |
14975 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14976 | update_dprintf_commands, NULL, |
14977 | &setlist, &showlist); | |
14978 | ||
d3ce09f5 SS |
14979 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
14980 | &disconnected_dprintf, _("\ | |
14981 | Set whether dprintf continues after GDB disconnects."), _("\ | |
14982 | Show whether dprintf continues after GDB disconnects."), _("\ | |
14983 | Use this to let dprintf commands continue to hit and produce output\n\ | |
14984 | even if GDB disconnects or detaches from the target."), | |
14985 | NULL, | |
14986 | NULL, | |
14987 | &setlist, &showlist); | |
14988 | ||
14989 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
14990 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
14991 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
14992 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
14993 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 14994 | |
491144b5 | 14995 | automatic_hardware_breakpoints = true; |
f3b1572e | 14996 | |
c90e7d63 SM |
14997 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
14998 | "breakpoint"); | |
14999 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
15000 | "breakpoint"); | |
c906108c | 15001 | } |