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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
4a94e368 | 3 | Copyright (C) 1986-2022 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
d322d6d6 | 59 | #include "gdbsupport/gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
0f8e2034 | 70 | #include "cli/cli-decode.h" |
d3ce09f5 | 71 | |
1042e4c0 | 72 | /* readline include files */ |
073bbbb0 | 73 | #include "readline/tilde.h" |
1042e4c0 SS |
74 | |
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
325fac50 | 80 | #include <algorithm> |
5ed8105e | 81 | #include "progspace-and-thread.h" |
268a13a5 TT |
82 | #include "gdbsupport/array-view.h" |
83 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
896b6bda | 87 | static void map_breakpoint_numbers (const char *, |
48649e1b | 88 | gdb::function_view<void (breakpoint *)>); |
c906108c | 89 | |
f00aae0f | 90 | static void |
264f9890 PA |
91 | create_sals_from_location_spec_default (location_spec *locspec, |
92 | linespec_result *canonical); | |
983af33b | 93 | |
eee031e2 TT |
94 | static void create_breakpoints_sal (struct gdbarch *, |
95 | struct linespec_result *, | |
96 | gdb::unique_xmalloc_ptr<char>, | |
97 | gdb::unique_xmalloc_ptr<char>, | |
98 | enum bptype, | |
99 | enum bpdisp, int, int, | |
100 | int, | |
eee031e2 | 101 | int, int, int, unsigned); |
983af33b | 102 | |
264f9890 PA |
103 | static std::vector<symtab_and_line> decode_location_spec_default |
104 | (struct breakpoint *b, struct location_spec *locspec, | |
6c5b2ebe | 105 | struct program_space *search_pspace); |
983af33b | 106 | |
a6535de1 TT |
107 | static int can_use_hardware_watchpoint |
108 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 109 | |
b713485d | 110 | static void mention (const breakpoint *); |
c906108c | 111 | |
7a3e3265 | 112 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
c906108c | 113 | |
752a2291 PA |
114 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
115 | ||
06edf0c0 PA |
116 | static struct breakpoint * |
117 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
118 | enum bptype type, | |
7ab97995 | 119 | int loc_enabled, int thread); |
06edf0c0 | 120 | |
76897487 KB |
121 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
122 | ||
a6d9a66e UW |
123 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
124 | CORE_ADDR bpaddr, | |
60270718 AB |
125 | enum bptype bptype, |
126 | struct program_space *pspace); | |
76897487 | 127 | |
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
7f32a4d5 PA |
131 | static int breakpoint_locations_match (struct bp_location *loc1, |
132 | struct bp_location *loc2, | |
133 | bool sw_hw_bps_match = false); | |
134 | ||
f1310107 | 135 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 136 | const struct address_space *aspace, |
f1310107 TJB |
137 | CORE_ADDR addr); |
138 | ||
d35ae833 | 139 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 140 | const address_space *, |
d35ae833 PA |
141 | CORE_ADDR, int); |
142 | ||
834c0d03 | 143 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 144 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 145 | |
313f3b21 | 146 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 147 | |
a14ed312 | 148 | static int hw_breakpoint_used_count (void); |
c906108c | 149 | |
a1398e0c PA |
150 | static int hw_watchpoint_use_count (struct breakpoint *); |
151 | ||
152 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
153 | enum bptype type, | |
154 | int *other_type_used); | |
c906108c | 155 | |
816338b5 SS |
156 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
157 | int count); | |
c906108c | 158 | |
f431efe5 | 159 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 160 | |
264f9890 | 161 | static std::vector<symtab_and_line> bkpt_probe_decode_location_spec |
5d926615 | 162 | (struct breakpoint *b, |
264f9890 | 163 | location_spec *locspec, |
5d926615 TT |
164 | struct program_space *search_pspace); |
165 | ||
6e14e441 PA |
166 | static bool bl_address_is_meaningful (bp_location *loc); |
167 | ||
44702360 PA |
168 | /* update_global_location_list's modes of operation wrt to whether to |
169 | insert locations now. */ | |
170 | enum ugll_insert_mode | |
171 | { | |
172 | /* Don't insert any breakpoint locations into the inferior, only | |
173 | remove already-inserted locations that no longer should be | |
174 | inserted. Functions that delete a breakpoint or breakpoints | |
175 | should specify this mode, so that deleting a breakpoint doesn't | |
176 | have the side effect of inserting the locations of other | |
177 | breakpoints that are marked not-inserted, but should_be_inserted | |
178 | returns true on them. | |
179 | ||
180 | This behavior is useful is situations close to tear-down -- e.g., | |
181 | after an exec, while the target still has execution, but | |
182 | breakpoint shadows of the previous executable image should *NOT* | |
183 | be restored to the new image; or before detaching, where the | |
184 | target still has execution and wants to delete breakpoints from | |
185 | GDB's lists, and all breakpoints had already been removed from | |
186 | the inferior. */ | |
187 | UGLL_DONT_INSERT, | |
188 | ||
a25a5a45 PA |
189 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
190 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
191 | UGLL_MAY_INSERT, |
192 | ||
a25a5a45 PA |
193 | /* Insert locations now, irrespective of |
194 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
195 | stopped right now, and the user did "continue". We need to | |
196 | insert breakpoints _before_ resuming the target, but | |
197 | UGLL_MAY_INSERT wouldn't insert them, because | |
198 | breakpoints_should_be_inserted_now returns false at that point, | |
199 | as no thread is running yet. */ | |
04086b45 | 200 | UGLL_INSERT |
44702360 PA |
201 | }; |
202 | ||
203 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 204 | |
44702360 | 205 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 206 | |
74960c60 | 207 | static void insert_breakpoint_locations (void); |
a5606eee | 208 | |
0b39b52e | 209 | static void trace_pass_command (const char *, int); |
1042e4c0 | 210 | |
558a9d82 YQ |
211 | static void set_tracepoint_count (int num); |
212 | ||
f2478a7e | 213 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 214 | |
983af33b SDJ |
215 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
216 | otherwise. */ | |
217 | ||
218 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 219 | |
264f9890 PA |
220 | static void bkpt_probe_create_sals_from_location_spec |
221 | (location_spec *locspec, | |
03ada39e | 222 | struct linespec_result *canonical); |
264f9890 PA |
223 | static void tracepoint_probe_create_sals_from_location_spec |
224 | (location_spec *locspec, | |
03ada39e | 225 | struct linespec_result *canonical); |
8613a476 | 226 | |
74421c0b | 227 | const struct breakpoint_ops code_breakpoint_ops = |
8613a476 | 228 | { |
264f9890 | 229 | create_sals_from_location_spec_default, |
eee031e2 | 230 | create_breakpoints_sal, |
8613a476 TT |
231 | }; |
232 | ||
55aa24fb | 233 | /* Breakpoints set on probes. */ |
a678887d | 234 | static const struct breakpoint_ops bkpt_probe_breakpoint_ops = |
8613a476 | 235 | { |
264f9890 | 236 | bkpt_probe_create_sals_from_location_spec, |
eee031e2 | 237 | create_breakpoints_sal, |
8613a476 | 238 | }; |
55aa24fb | 239 | |
bac7c5cf | 240 | /* Tracepoints set on probes. */ |
a678887d | 241 | static const struct breakpoint_ops tracepoint_probe_breakpoint_ops = |
8613a476 | 242 | { |
264f9890 | 243 | tracepoint_probe_create_sals_from_location_spec, |
eee031e2 | 244 | create_breakpoints_sal, |
8613a476 | 245 | }; |
bac7c5cf | 246 | |
1c2cbcf1 PA |
247 | /* Implementation of abstract dtors. These must exist to satisfy the |
248 | linker. */ | |
249 | ||
250 | breakpoint::~breakpoint () | |
251 | { | |
252 | } | |
253 | ||
74421c0b | 254 | code_breakpoint::~code_breakpoint () |
1c2cbcf1 PA |
255 | { |
256 | } | |
257 | ||
258 | catchpoint::~catchpoint () | |
259 | { | |
260 | } | |
261 | ||
098f1272 | 262 | /* The structure to be used in regular breakpoints. */ |
74421c0b | 263 | struct ordinary_breakpoint : public code_breakpoint |
098f1272 | 264 | { |
74421c0b | 265 | using code_breakpoint::code_breakpoint; |
73063f51 | 266 | |
7dd8e7ae | 267 | int resources_needed (const struct bp_location *) override; |
7bd86313 | 268 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 269 | void print_mention () const override; |
4d1ae558 | 270 | void print_recreate (struct ui_file *fp) const override; |
098f1272 TT |
271 | }; |
272 | ||
9a71ed14 PA |
273 | /* Internal breakpoints. These typically have a lifetime the same as |
274 | the program, and they end up installed on the breakpoint chain with | |
275 | a negative breakpoint number. They're visible in "maint info | |
276 | breakpoints", but not "info breakpoints". */ | |
74421c0b | 277 | struct internal_breakpoint : public code_breakpoint |
098f1272 | 278 | { |
752a2291 PA |
279 | internal_breakpoint (struct gdbarch *gdbarch, |
280 | enum bptype type, CORE_ADDR address) | |
74421c0b | 281 | : code_breakpoint (gdbarch, type) |
752a2291 PA |
282 | { |
283 | symtab_and_line sal; | |
284 | sal.pc = address; | |
285 | sal.section = find_pc_overlay (sal.pc); | |
286 | sal.pspace = current_program_space; | |
287 | add_location (sal); | |
288 | ||
289 | pspace = current_program_space; | |
290 | disposition = disp_donttouch; | |
291 | } | |
73063f51 | 292 | |
c359fff5 TT |
293 | void re_set () override; |
294 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 295 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 296 | void print_mention () const override; |
098f1272 TT |
297 | }; |
298 | ||
9a71ed14 PA |
299 | /* Momentary breakpoints. These typically have a lifetime of some run |
300 | control command only, are always thread-specific, and have 0 for | |
301 | breakpoint number. I.e., there can be many momentary breakpoints | |
302 | on the breakpoint chain and they all same the same number (zero). | |
303 | They're visible in "maint info breakpoints", but not "info | |
304 | breakpoints". */ | |
74421c0b | 305 | struct momentary_breakpoint : public code_breakpoint |
098f1272 | 306 | { |
7ab97995 PA |
307 | momentary_breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
308 | program_space *pspace_, | |
309 | const struct frame_id &frame_id_, | |
310 | int thread_) | |
74421c0b | 311 | : code_breakpoint (gdbarch_, bptype) |
7ab97995 PA |
312 | { |
313 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
314 | or tail-called one. */ | |
315 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
316 | ||
317 | /* Momentary breakpoints are always thread-specific. */ | |
318 | gdb_assert (thread_ > 0); | |
319 | ||
320 | pspace = pspace_; | |
321 | enable_state = bp_enabled; | |
322 | disposition = disp_donttouch; | |
323 | frame_id = frame_id_; | |
324 | thread = thread_; | |
325 | } | |
73063f51 | 326 | |
1fd30a47 TT |
327 | void re_set () override; |
328 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 329 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 330 | void print_mention () const override; |
098f1272 TT |
331 | }; |
332 | ||
333 | /* DPrintf breakpoints. */ | |
5ad71d67 | 334 | struct dprintf_breakpoint : public ordinary_breakpoint |
098f1272 | 335 | { |
73063f51 TT |
336 | using ordinary_breakpoint::ordinary_breakpoint; |
337 | ||
f293a0b5 TT |
338 | void re_set () override; |
339 | int breakpoint_hit (const struct bp_location *bl, | |
340 | const address_space *aspace, | |
341 | CORE_ADDR bp_addr, | |
342 | const target_waitstatus &ws) override; | |
4d1ae558 | 343 | void print_recreate (struct ui_file *fp) const override; |
f293a0b5 | 344 | void after_condition_true (struct bpstat *bs) override; |
098f1272 TT |
345 | }; |
346 | ||
ec45bb67 TT |
347 | /* Ranged breakpoints. */ |
348 | struct ranged_breakpoint : public ordinary_breakpoint | |
349 | { | |
b925bf21 PA |
350 | explicit ranged_breakpoint (struct gdbarch *gdbarch, |
351 | const symtab_and_line &sal_start, | |
352 | int length, | |
264f9890 PA |
353 | location_spec_up start_locspec, |
354 | location_spec_up end_locspec) | |
73063f51 TT |
355 | : ordinary_breakpoint (gdbarch, bp_hardware_breakpoint) |
356 | { | |
b925bf21 PA |
357 | bp_location *bl = add_location (sal_start); |
358 | bl->length = length; | |
359 | ||
360 | disposition = disp_donttouch; | |
361 | ||
264f9890 PA |
362 | locspec = std::move (start_locspec); |
363 | locspec_range_end = std::move (end_locspec); | |
73063f51 TT |
364 | } |
365 | ||
ec45bb67 TT |
366 | int breakpoint_hit (const struct bp_location *bl, |
367 | const address_space *aspace, | |
368 | CORE_ADDR bp_addr, | |
369 | const target_waitstatus &ws) override; | |
370 | int resources_needed (const struct bp_location *) override; | |
7bd86313 | 371 | enum print_stop_action print_it (const bpstat *bs) const override; |
a67bcaba | 372 | bool print_one (bp_location **) const override; |
ec45bb67 | 373 | void print_one_detail (struct ui_out *) const override; |
b713485d | 374 | void print_mention () const override; |
4d1ae558 | 375 | void print_recreate (struct ui_file *fp) const override; |
ec45bb67 TT |
376 | }; |
377 | ||
6d7a8c56 TT |
378 | /* Static tracepoints with marker (`-m'). */ |
379 | struct static_marker_tracepoint : public tracepoint | |
380 | { | |
73063f51 TT |
381 | using tracepoint::tracepoint; |
382 | ||
264f9890 PA |
383 | std::vector<symtab_and_line> decode_location_spec |
384 | (struct location_spec *locspec, | |
6d7a8c56 TT |
385 | struct program_space *search_pspace) override; |
386 | }; | |
387 | ||
d3ce09f5 SS |
388 | /* The style in which to perform a dynamic printf. This is a user |
389 | option because different output options have different tradeoffs; | |
390 | if GDB does the printing, there is better error handling if there | |
391 | is a problem with any of the arguments, but using an inferior | |
392 | function lets you have special-purpose printers and sending of | |
393 | output to the same place as compiled-in print functions. */ | |
394 | ||
395 | static const char dprintf_style_gdb[] = "gdb"; | |
396 | static const char dprintf_style_call[] = "call"; | |
397 | static const char dprintf_style_agent[] = "agent"; | |
398 | static const char *const dprintf_style_enums[] = { | |
399 | dprintf_style_gdb, | |
400 | dprintf_style_call, | |
401 | dprintf_style_agent, | |
402 | NULL | |
403 | }; | |
404 | static const char *dprintf_style = dprintf_style_gdb; | |
405 | ||
406 | /* The function to use for dynamic printf if the preferred style is to | |
407 | call into the inferior. The value is simply a string that is | |
408 | copied into the command, so it can be anything that GDB can | |
409 | evaluate to a callable address, not necessarily a function name. */ | |
410 | ||
e0700ba4 | 411 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
412 | |
413 | /* The channel to use for dynamic printf if the preferred style is to | |
414 | call into the inferior; if a nonempty string, it will be passed to | |
415 | the call as the first argument, with the format string as the | |
416 | second. As with the dprintf function, this can be anything that | |
417 | GDB knows how to evaluate, so in addition to common choices like | |
418 | "stderr", this could be an app-specific expression like | |
419 | "mystreams[curlogger]". */ | |
420 | ||
e0700ba4 | 421 | static std::string dprintf_channel; |
d3ce09f5 SS |
422 | |
423 | /* True if dprintf commands should continue to operate even if GDB | |
424 | has disconnected. */ | |
491144b5 | 425 | static bool disconnected_dprintf = true; |
d3ce09f5 | 426 | |
5cea2a26 PA |
427 | struct command_line * |
428 | breakpoint_commands (struct breakpoint *b) | |
429 | { | |
d1b0a7bf | 430 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 431 | } |
3daf8fe5 | 432 | |
f3b1572e PA |
433 | /* Flag indicating that a command has proceeded the inferior past the |
434 | current breakpoint. */ | |
435 | ||
491144b5 | 436 | static bool breakpoint_proceeded; |
f3b1572e | 437 | |
956a9fb9 | 438 | const char * |
2cec12e5 AR |
439 | bpdisp_text (enum bpdisp disp) |
440 | { | |
4a64f543 MS |
441 | /* NOTE: the following values are a part of MI protocol and |
442 | represent values of 'disp' field returned when inferior stops at | |
443 | a breakpoint. */ | |
bc043ef3 | 444 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 445 | |
2cec12e5 AR |
446 | return bpdisps[(int) disp]; |
447 | } | |
c906108c | 448 | |
4a64f543 | 449 | /* Prototypes for exported functions. */ |
c906108c | 450 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 451 | if such is available. */ |
c906108c SS |
452 | static int can_use_hw_watchpoints; |
453 | ||
920d2a44 AC |
454 | static void |
455 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
456 | struct cmd_list_element *c, | |
457 | const char *value) | |
458 | { | |
6cb06a8c TT |
459 | gdb_printf (file, |
460 | _("Debugger's willingness to use " | |
461 | "watchpoint hardware is %s.\n"), | |
462 | value); | |
920d2a44 AC |
463 | } |
464 | ||
fa8d40ab JJ |
465 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
466 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 467 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
468 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
469 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
470 | static void |
471 | show_pending_break_support (struct ui_file *file, int from_tty, | |
472 | struct cmd_list_element *c, | |
473 | const char *value) | |
474 | { | |
6cb06a8c TT |
475 | gdb_printf (file, |
476 | _("Debugger's behavior regarding " | |
477 | "pending breakpoints is %s.\n"), | |
478 | value); | |
920d2a44 | 479 | } |
fa8d40ab | 480 | |
491144b5 | 481 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 482 | set with "break" but falling in read-only memory. |
491144b5 | 483 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 484 | use hardware breakpoints. */ |
491144b5 | 485 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
486 | static void |
487 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
488 | struct cmd_list_element *c, | |
489 | const char *value) | |
490 | { | |
6cb06a8c TT |
491 | gdb_printf (file, |
492 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
493 | value); | |
765dc015 VP |
494 | } |
495 | ||
a25a5a45 PA |
496 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
497 | stopped, and immediately inserts any new breakpoints as soon as | |
498 | they're created. If off (default), GDB keeps breakpoints off of | |
499 | the target as long as possible. That is, it delays inserting | |
500 | breakpoints until the next resume, and removes them again when the | |
501 | target fully stops. This is a bit safer in case GDB crashes while | |
502 | processing user input. */ | |
491144b5 | 503 | static bool always_inserted_mode = false; |
72d0e2c5 | 504 | |
33e5cbd6 | 505 | static void |
74960c60 | 506 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 507 | struct cmd_list_element *c, const char *value) |
74960c60 | 508 | { |
6cb06a8c TT |
509 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
510 | value); | |
74960c60 VP |
511 | } |
512 | ||
b57bacec PA |
513 | /* See breakpoint.h. */ |
514 | ||
33e5cbd6 | 515 | int |
a25a5a45 | 516 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 517 | { |
a25a5a45 PA |
518 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
519 | { | |
520 | /* If breakpoints are global, they should be inserted even if no | |
521 | thread under gdb's control is running, or even if there are | |
522 | no threads under GDB's control yet. */ | |
523 | return 1; | |
524 | } | |
5b6d1e4f | 525 | else |
a25a5a45 | 526 | { |
a25a5a45 PA |
527 | if (always_inserted_mode) |
528 | { | |
529 | /* The user wants breakpoints inserted even if all threads | |
530 | are stopped. */ | |
531 | return 1; | |
532 | } | |
533 | ||
5b6d1e4f PA |
534 | for (inferior *inf : all_inferiors ()) |
535 | if (inf->has_execution () | |
536 | && threads_are_executing (inf->process_target ())) | |
537 | return 1; | |
372316f1 PA |
538 | |
539 | /* Don't remove breakpoints yet if, even though all threads are | |
540 | stopped, we still have events to process. */ | |
08036331 | 541 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 542 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 543 | return 1; |
a25a5a45 PA |
544 | } |
545 | return 0; | |
33e5cbd6 | 546 | } |
765dc015 | 547 | |
b775012e LM |
548 | static const char condition_evaluation_both[] = "host or target"; |
549 | ||
550 | /* Modes for breakpoint condition evaluation. */ | |
551 | static const char condition_evaluation_auto[] = "auto"; | |
552 | static const char condition_evaluation_host[] = "host"; | |
553 | static const char condition_evaluation_target[] = "target"; | |
554 | static const char *const condition_evaluation_enums[] = { | |
555 | condition_evaluation_auto, | |
556 | condition_evaluation_host, | |
557 | condition_evaluation_target, | |
558 | NULL | |
559 | }; | |
560 | ||
561 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
562 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
563 | ||
564 | /* Global that we use to display information to the user (gets its value from | |
565 | condition_evaluation_mode_1. */ | |
566 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
567 | ||
568 | /* Translate a condition evaluation mode MODE into either "host" | |
569 | or "target". This is used mostly to translate from "auto" to the | |
570 | real setting that is being used. It returns the translated | |
571 | evaluation mode. */ | |
572 | ||
573 | static const char * | |
574 | translate_condition_evaluation_mode (const char *mode) | |
575 | { | |
576 | if (mode == condition_evaluation_auto) | |
577 | { | |
578 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
579 | return condition_evaluation_target; | |
580 | else | |
581 | return condition_evaluation_host; | |
582 | } | |
583 | else | |
584 | return mode; | |
585 | } | |
586 | ||
587 | /* Discovers what condition_evaluation_auto translates to. */ | |
588 | ||
589 | static const char * | |
590 | breakpoint_condition_evaluation_mode (void) | |
591 | { | |
592 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
593 | } | |
594 | ||
595 | /* Return true if GDB should evaluate breakpoint conditions or false | |
596 | otherwise. */ | |
597 | ||
598 | static int | |
599 | gdb_evaluates_breakpoint_condition_p (void) | |
600 | { | |
601 | const char *mode = breakpoint_condition_evaluation_mode (); | |
602 | ||
603 | return (mode == condition_evaluation_host); | |
604 | } | |
605 | ||
c906108c SS |
606 | /* Are we executing breakpoint commands? */ |
607 | static int executing_breakpoint_commands; | |
608 | ||
c02f5703 MS |
609 | /* Are overlay event breakpoints enabled? */ |
610 | static int overlay_events_enabled; | |
611 | ||
e09342b5 | 612 | /* See description in breakpoint.h. */ |
491144b5 | 613 | bool target_exact_watchpoints = false; |
e09342b5 | 614 | |
c906108c | 615 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 616 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 617 | current breakpoint. */ |
c906108c | 618 | |
5c44784c JM |
619 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
620 | for (B = breakpoint_chain; \ | |
621 | B ? (TMP=B->next, 1): 0; \ | |
622 | B = TMP) | |
c906108c | 623 | |
7cc221ef | 624 | /* Chains of all breakpoints defined. */ |
c906108c | 625 | |
81e6b8eb | 626 | static struct breakpoint *breakpoint_chain; |
c906108c | 627 | |
240edef6 | 628 | /* See breakpoint.h. */ |
43892fdf | 629 | |
240edef6 | 630 | breakpoint_range |
43892fdf SM |
631 | all_breakpoints () |
632 | { | |
633 | return breakpoint_range (breakpoint_chain); | |
634 | } | |
635 | ||
240edef6 | 636 | /* See breakpoint.h. */ |
1428b37a | 637 | |
240edef6 | 638 | breakpoint_safe_range |
1428b37a SM |
639 | all_breakpoints_safe () |
640 | { | |
641 | return breakpoint_safe_range (all_breakpoints ()); | |
642 | } | |
643 | ||
f6d17b2b SM |
644 | /* See breakpoint.h. */ |
645 | ||
646 | tracepoint_range | |
647 | all_tracepoints () | |
648 | { | |
649 | return tracepoint_range (breakpoint_chain); | |
650 | } | |
651 | ||
39ef2f62 | 652 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 653 | |
5d51cd5d | 654 | static std::vector<bp_location *> bp_locations; |
876fa593 | 655 | |
055c879f SM |
656 | /* See breakpoint.h. */ |
657 | ||
658 | const std::vector<bp_location *> & | |
48d7020b SM |
659 | all_bp_locations () |
660 | { | |
661 | return bp_locations; | |
662 | } | |
663 | ||
e0d9a270 SM |
664 | /* Range to iterate over breakpoint locations at a given address. */ |
665 | ||
666 | struct bp_locations_at_addr_range | |
667 | { | |
668 | using iterator = std::vector<bp_location *>::iterator; | |
669 | ||
670 | bp_locations_at_addr_range (CORE_ADDR addr) | |
671 | { | |
672 | struct compare | |
673 | { | |
674 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
675 | { return loc->address < addr_; } | |
676 | ||
677 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
678 | { return addr_ < loc->address; } | |
679 | }; | |
680 | ||
681 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
682 | addr, compare ()); | |
683 | ||
684 | m_begin = it_pair.first; | |
685 | m_end = it_pair.second; | |
686 | } | |
687 | ||
688 | iterator begin () const | |
689 | { return m_begin; } | |
690 | ||
691 | iterator end () const | |
692 | { return m_end; } | |
693 | ||
694 | private: | |
695 | iterator m_begin; | |
696 | iterator m_end; | |
697 | }; | |
698 | ||
699 | /* Return a range to iterate over all breakpoint locations exactly at address | |
700 | ADDR. | |
701 | ||
702 | If it's needed to iterate multiple times on the same range, it's possible | |
703 | to save the range in a local variable and use it multiple times: | |
704 | ||
705 | auto range = all_bp_locations_at_addr (addr); | |
706 | ||
707 | for (bp_location *loc : range) | |
708 | // use loc | |
709 | ||
710 | for (bp_location *loc : range) | |
711 | // use loc | |
712 | ||
713 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
714 | the range's boundaries. Just remember not to change the bp_locations vector | |
715 | in the mean time, as it could make the range's iterators stale. */ | |
716 | ||
717 | static bp_locations_at_addr_range | |
718 | all_bp_locations_at_addr (CORE_ADDR addr) | |
719 | { | |
720 | return bp_locations_at_addr_range (addr); | |
721 | } | |
722 | ||
4a64f543 | 723 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 724 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 725 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 726 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 727 | an address you need to read. */ |
876fa593 | 728 | |
f5336ca5 | 729 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 730 | |
4a64f543 MS |
731 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
732 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
733 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
734 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 735 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 736 | |
f5336ca5 | 737 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 738 | |
4a64f543 | 739 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
740 | from the bp_locations array, but for which a hit may still be |
741 | reported by a target. */ | |
1123588c | 742 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 743 | |
c906108c SS |
744 | /* Number of last breakpoint made. */ |
745 | ||
95a42b64 TT |
746 | static int breakpoint_count; |
747 | ||
86b17b60 PA |
748 | /* The value of `breakpoint_count' before the last command that |
749 | created breakpoints. If the last (break-like) command created more | |
750 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
751 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
752 | static int prev_breakpoint_count; | |
c906108c | 753 | |
1042e4c0 SS |
754 | /* Number of last tracepoint made. */ |
755 | ||
95a42b64 | 756 | static int tracepoint_count; |
1042e4c0 | 757 | |
6149aea9 PA |
758 | static struct cmd_list_element *breakpoint_set_cmdlist; |
759 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 760 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 761 | |
468d015d JJ |
762 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
763 | static int | |
764 | breakpoint_enabled (struct breakpoint *b) | |
765 | { | |
0d381245 | 766 | return (b->enable_state == bp_enabled); |
468d015d JJ |
767 | } |
768 | ||
c906108c SS |
769 | /* Set breakpoint count to NUM. */ |
770 | ||
95a42b64 | 771 | static void |
fba45db2 | 772 | set_breakpoint_count (int num) |
c906108c | 773 | { |
86b17b60 | 774 | prev_breakpoint_count = breakpoint_count; |
c906108c | 775 | breakpoint_count = num; |
4fa62494 | 776 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
777 | } |
778 | ||
86b17b60 PA |
779 | /* Used by `start_rbreak_breakpoints' below, to record the current |
780 | breakpoint count before "rbreak" creates any breakpoint. */ | |
781 | static int rbreak_start_breakpoint_count; | |
782 | ||
95a42b64 TT |
783 | /* Called at the start an "rbreak" command to record the first |
784 | breakpoint made. */ | |
86b17b60 | 785 | |
c80049d3 | 786 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 787 | { |
86b17b60 | 788 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
789 | } |
790 | ||
791 | /* Called at the end of an "rbreak" command to record the last | |
792 | breakpoint made. */ | |
86b17b60 | 793 | |
c80049d3 | 794 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 795 | { |
86b17b60 | 796 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
797 | } |
798 | ||
4a64f543 | 799 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
800 | |
801 | void | |
fba45db2 | 802 | clear_breakpoint_hit_counts (void) |
c906108c | 803 | { |
43892fdf | 804 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
805 | b->hit_count = 0; |
806 | } | |
807 | ||
c906108c | 808 | \f |
48cb2d85 VP |
809 | /* Return the breakpoint with the specified number, or NULL |
810 | if the number does not refer to an existing breakpoint. */ | |
811 | ||
812 | struct breakpoint * | |
813 | get_breakpoint (int num) | |
814 | { | |
43892fdf | 815 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
816 | if (b->number == num) |
817 | return b; | |
818 | ||
43892fdf | 819 | return nullptr; |
48cb2d85 | 820 | } |
5c44784c | 821 | |
c906108c | 822 | \f |
adc36818 | 823 | |
b775012e LM |
824 | /* Mark locations as "conditions have changed" in case the target supports |
825 | evaluating conditions on its side. */ | |
826 | ||
827 | static void | |
828 | mark_breakpoint_modified (struct breakpoint *b) | |
829 | { | |
b775012e LM |
830 | /* This is only meaningful if the target is |
831 | evaluating conditions and if the user has | |
832 | opted for condition evaluation on the target's | |
833 | side. */ | |
834 | if (gdb_evaluates_breakpoint_condition_p () | |
835 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
836 | return; | |
837 | ||
838 | if (!is_breakpoint (b)) | |
839 | return; | |
840 | ||
40cb8ca5 | 841 | for (bp_location *loc : b->locations ()) |
b775012e LM |
842 | loc->condition_changed = condition_modified; |
843 | } | |
844 | ||
845 | /* Mark location as "conditions have changed" in case the target supports | |
846 | evaluating conditions on its side. */ | |
847 | ||
848 | static void | |
849 | mark_breakpoint_location_modified (struct bp_location *loc) | |
850 | { | |
851 | /* This is only meaningful if the target is | |
852 | evaluating conditions and if the user has | |
853 | opted for condition evaluation on the target's | |
854 | side. */ | |
855 | if (gdb_evaluates_breakpoint_condition_p () | |
856 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
857 | ||
858 | return; | |
859 | ||
860 | if (!is_breakpoint (loc->owner)) | |
861 | return; | |
862 | ||
863 | loc->condition_changed = condition_modified; | |
864 | } | |
865 | ||
866 | /* Sets the condition-evaluation mode using the static global | |
867 | condition_evaluation_mode. */ | |
868 | ||
869 | static void | |
eb4c3f4a | 870 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
871 | struct cmd_list_element *c) |
872 | { | |
b775012e LM |
873 | const char *old_mode, *new_mode; |
874 | ||
875 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
876 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
877 | { | |
878 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
879 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
880 | "Using host evaluation mode instead.")); | |
881 | return; | |
882 | } | |
883 | ||
884 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
885 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
886 | ||
abf1152a JK |
887 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
888 | settings was "auto". */ | |
889 | condition_evaluation_mode = condition_evaluation_mode_1; | |
890 | ||
b775012e LM |
891 | /* Only update the mode if the user picked a different one. */ |
892 | if (new_mode != old_mode) | |
893 | { | |
b775012e LM |
894 | /* If the user switched to a different evaluation mode, we |
895 | need to synch the changes with the target as follows: | |
896 | ||
897 | "host" -> "target": Send all (valid) conditions to the target. | |
898 | "target" -> "host": Remove all the conditions from the target. | |
899 | */ | |
900 | ||
b775012e LM |
901 | if (new_mode == condition_evaluation_target) |
902 | { | |
903 | /* Mark everything modified and synch conditions with the | |
904 | target. */ | |
48d7020b | 905 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 906 | mark_breakpoint_location_modified (loc); |
24b21115 | 907 | } |
b775012e LM |
908 | else |
909 | { | |
910 | /* Manually mark non-duplicate locations to synch conditions | |
911 | with the target. We do this to remove all the conditions the | |
912 | target knows about. */ | |
48d7020b | 913 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
914 | if (is_breakpoint (loc->owner) && loc->inserted) |
915 | loc->needs_update = 1; | |
916 | } | |
917 | ||
918 | /* Do the update. */ | |
44702360 | 919 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
920 | } |
921 | ||
922 | return; | |
923 | } | |
924 | ||
925 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
926 | what "auto" is translating to. */ | |
927 | ||
928 | static void | |
929 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
930 | struct cmd_list_element *c, const char *value) | |
931 | { | |
932 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
933 | gdb_printf (file, |
934 | _("Breakpoint condition evaluation " | |
935 | "mode is %s (currently %s).\n"), | |
936 | value, | |
937 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 938 | else |
6cb06a8c TT |
939 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
940 | value); | |
b775012e LM |
941 | } |
942 | ||
b5fa468f TBA |
943 | /* Parse COND_STRING in the context of LOC and set as the condition |
944 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
945 | the number of LOC within its owner. In case of parsing error, mark | |
946 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
947 | ||
948 | static void | |
949 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
950 | int bp_num, int loc_num) | |
951 | { | |
952 | bool has_junk = false; | |
953 | try | |
954 | { | |
955 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
956 | block_for_pc (loc->address), 0); | |
957 | if (*cond_string != 0) | |
958 | has_junk = true; | |
959 | else | |
960 | { | |
961 | loc->cond = std::move (new_exp); | |
962 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
963 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
964 | "location %d, enabling.\n"), | |
965 | bp_num, loc_num); | |
b5fa468f TBA |
966 | |
967 | loc->disabled_by_cond = false; | |
968 | } | |
969 | } | |
970 | catch (const gdb_exception_error &e) | |
971 | { | |
972 | if (loc->enabled) | |
973 | { | |
974 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
975 | BP_NUM is 0 if the breakpoint is being defined for the first | |
976 | time using the "break ... if ..." command, and non-zero if | |
977 | already defined. */ | |
978 | if (bp_num != 0) | |
979 | warning (_("failed to validate condition at location %d.%d, " | |
980 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
981 | else | |
982 | warning (_("failed to validate condition at location %d, " | |
983 | "disabling:\n %s"), loc_num, e.what ()); | |
984 | } | |
985 | ||
986 | loc->disabled_by_cond = true; | |
987 | } | |
988 | ||
989 | if (has_junk) | |
990 | error (_("Garbage '%s' follows condition"), cond_string); | |
991 | } | |
992 | ||
adc36818 | 993 | void |
7a26bd4d | 994 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 995 | int from_tty, bool force) |
adc36818 | 996 | { |
4c55e970 | 997 | if (*exp == 0) |
3a5c3e22 | 998 | { |
6f781ee3 | 999 | b->cond_string.reset (); |
3a5c3e22 | 1000 | |
4c55e970 | 1001 | if (is_watchpoint (b)) |
78319c15 | 1002 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
1003 | else |
1004 | { | |
b5fa468f | 1005 | int loc_num = 1; |
40cb8ca5 | 1006 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
1007 | { |
1008 | loc->cond.reset (); | |
b5fa468f | 1009 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
1010 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
1011 | "location %d, enabling.\n"), | |
1012 | b->number, loc_num); | |
b5fa468f TBA |
1013 | loc->disabled_by_cond = false; |
1014 | loc_num++; | |
4c55e970 TBA |
1015 | |
1016 | /* No need to free the condition agent expression | |
1017 | bytecode (if we have one). We will handle this | |
1018 | when we go through update_global_location_list. */ | |
1019 | } | |
1020 | } | |
1e620590 | 1021 | |
adc36818 | 1022 | if (from_tty) |
6cb06a8c | 1023 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
1024 | } |
1025 | else | |
1026 | { | |
adc36818 PM |
1027 | if (is_watchpoint (b)) |
1028 | { | |
699bd4cf | 1029 | innermost_block_tracker tracker; |
78319c15 | 1030 | const char *arg = exp; |
4c55e970 | 1031 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 1032 | if (*arg != 0) |
adc36818 | 1033 | error (_("Junk at end of expression")); |
78319c15 | 1034 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 1035 | w->cond_exp = std::move (new_exp); |
699bd4cf | 1036 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
1037 | } |
1038 | else | |
1039 | { | |
4c55e970 TBA |
1040 | /* Parse and set condition expressions. We make two passes. |
1041 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
1042 | is valid in at least one location. If so, the condition |
1043 | would be accepted. So we go ahead and set the locations' | |
1044 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
1045 | the error and the condition string will be rejected. |
1046 | This two-pass approach is taken to avoid setting the | |
1047 | state of locations in case of a reject. */ | |
40cb8ca5 | 1048 | for (bp_location *loc : b->locations ()) |
4c55e970 | 1049 | { |
b5fa468f TBA |
1050 | try |
1051 | { | |
1052 | const char *arg = exp; | |
1053 | parse_exp_1 (&arg, loc->address, | |
1054 | block_for_pc (loc->address), 0); | |
1055 | if (*arg != 0) | |
1056 | error (_("Junk at end of expression")); | |
1057 | break; | |
1058 | } | |
1059 | catch (const gdb_exception_error &e) | |
1060 | { | |
1061 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
1062 | be the last loc, abandon (if not forced) or continue |
1063 | (if forced). */ | |
1064 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
1065 | throw; |
1066 | } | |
4c55e970 TBA |
1067 | } |
1068 | ||
b5fa468f | 1069 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 1070 | int loc_num = 1; |
40cb8ca5 SM |
1071 | for (bp_location *loc : b->locations ()) |
1072 | { | |
1073 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
1074 | loc_num++; | |
1075 | } | |
adc36818 | 1076 | } |
1e620590 TBA |
1077 | |
1078 | /* We know that the new condition parsed successfully. The | |
1079 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 1080 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 1081 | b->condition_not_parsed = 0; |
adc36818 | 1082 | } |
b775012e LM |
1083 | mark_breakpoint_modified (b); |
1084 | ||
76727919 | 1085 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
1086 | } |
1087 | ||
79aabb73 TBA |
1088 | /* See breakpoint.h. */ |
1089 | ||
1090 | void | |
1091 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
1092 | bool force) | |
1093 | { | |
43892fdf | 1094 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
1095 | if (b->number == bpnum) |
1096 | { | |
1097 | /* Check if this breakpoint has a "stop" method implemented in an | |
1098 | extension language. This method and conditions entered into GDB | |
1099 | from the CLI are mutually exclusive. */ | |
1100 | const struct extension_language_defn *extlang | |
1101 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1102 | ||
1103 | if (extlang != NULL) | |
1104 | { | |
1105 | error (_("Only one stop condition allowed. There is currently" | |
1106 | " a %s stop condition defined for this breakpoint."), | |
1107 | ext_lang_capitalized_name (extlang)); | |
1108 | } | |
1109 | set_breakpoint_condition (b, exp, from_tty, force); | |
1110 | ||
1111 | if (is_breakpoint (b)) | |
1112 | update_global_location_list (UGLL_MAY_INSERT); | |
1113 | ||
1114 | return; | |
1115 | } | |
1116 | ||
1117 | error (_("No breakpoint number %d."), bpnum); | |
1118 | } | |
1119 | ||
b1d4d8d1 TBA |
1120 | /* The options for the "condition" command. */ |
1121 | ||
1122 | struct condition_command_opts | |
1123 | { | |
1124 | /* For "-force". */ | |
1125 | bool force_condition = false; | |
1126 | }; | |
1127 | ||
1128 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1129 | ||
1130 | gdb::option::flag_option_def<condition_command_opts> { | |
1131 | "force", | |
1132 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1133 | N_("Set the condition even if it is invalid for all current locations."), | |
1134 | }, | |
1135 | ||
1136 | }; | |
1137 | ||
1138 | /* Create an option_def_group for the "condition" options, with | |
1139 | CC_OPTS as context. */ | |
1140 | ||
1141 | static inline gdb::option::option_def_group | |
1142 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1143 | { | |
1144 | return {{condition_command_option_defs}, cc_opts}; | |
1145 | } | |
1146 | ||
d55637df TT |
1147 | /* Completion for the "condition" command. */ |
1148 | ||
eb3ff9a5 | 1149 | static void |
6f937416 | 1150 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1151 | completion_tracker &tracker, |
b1d4d8d1 | 1152 | const char *text, const char * /*word*/) |
d55637df | 1153 | { |
b1d4d8d1 TBA |
1154 | bool has_no_arguments = (*text == '\0'); |
1155 | condition_command_opts cc_opts; | |
1156 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1157 | if (gdb::option::complete_options | |
1158 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1159 | return; | |
d55637df | 1160 | |
f1735a53 | 1161 | text = skip_spaces (text); |
b1d4d8d1 | 1162 | const char *space = skip_to_space (text); |
d55637df TT |
1163 | if (*space == '\0') |
1164 | { | |
1165 | int len; | |
d55637df TT |
1166 | |
1167 | if (text[0] == '$') | |
1168 | { | |
b1d4d8d1 | 1169 | tracker.advance_custom_word_point_by (1); |
d55637df | 1170 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1171 | if (!isdigit (text[1])) |
1172 | complete_internalvar (tracker, &text[1]); | |
1173 | return; | |
d55637df TT |
1174 | } |
1175 | ||
b1d4d8d1 TBA |
1176 | /* Suggest the "-force" flag if no arguments are given. If |
1177 | arguments were passed, they either already include the flag, | |
1178 | or we are beyond the point of suggesting it because it's | |
1179 | positionally the first argument. */ | |
1180 | if (has_no_arguments) | |
1181 | gdb::option::complete_on_all_options (tracker, group); | |
1182 | ||
d55637df TT |
1183 | /* We're completing the breakpoint number. */ |
1184 | len = strlen (text); | |
1185 | ||
43892fdf | 1186 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1187 | { |
1188 | char number[50]; | |
1189 | ||
1190 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1191 | ||
1192 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1193 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1194 | } |
d55637df | 1195 | |
eb3ff9a5 | 1196 | return; |
d55637df TT |
1197 | } |
1198 | ||
b1d4d8d1 TBA |
1199 | /* We're completing the expression part. Skip the breakpoint num. */ |
1200 | const char *exp_start = skip_spaces (space); | |
1201 | tracker.advance_custom_word_point_by (exp_start - text); | |
1202 | text = exp_start; | |
1203 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1204 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1205 | } |
1206 | ||
c906108c SS |
1207 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1208 | ||
1209 | static void | |
0b39b52e | 1210 | condition_command (const char *arg, int from_tty) |
c906108c | 1211 | { |
0b39b52e | 1212 | const char *p; |
52f0bd74 | 1213 | int bnum; |
c906108c SS |
1214 | |
1215 | if (arg == 0) | |
e2e0b3e5 | 1216 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1217 | |
1218 | p = arg; | |
733d554a TBA |
1219 | |
1220 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1221 | condition_command_opts cc_opts; |
1222 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1223 | gdb::option::process_options | |
1224 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1225 | |
c906108c | 1226 | bnum = get_number (&p); |
5c44784c | 1227 | if (bnum == 0) |
8a3fe4f8 | 1228 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1229 | |
79aabb73 | 1230 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1231 | } |
1232 | ||
a7bdde9e VP |
1233 | /* Check that COMMAND do not contain commands that are suitable |
1234 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1235 | Throw if any such commands is found. */ |
1236 | ||
a7bdde9e VP |
1237 | static void |
1238 | check_no_tracepoint_commands (struct command_line *commands) | |
1239 | { | |
1240 | struct command_line *c; | |
cc59ec59 | 1241 | |
a7bdde9e VP |
1242 | for (c = commands; c; c = c->next) |
1243 | { | |
a7bdde9e | 1244 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1245 | error (_("The 'while-stepping' command can " |
1246 | "only be used for tracepoints")); | |
a7bdde9e | 1247 | |
12973681 TT |
1248 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1249 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1250 | |
1251 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1252 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1253 | command directly. */ |
1254 | if (strstr (c->line, "collect ") == c->line) | |
1255 | error (_("The 'collect' command can only be used for tracepoints")); | |
1256 | ||
51661e93 VP |
1257 | if (strstr (c->line, "teval ") == c->line) |
1258 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1259 | } |
1260 | } | |
1261 | ||
098f1272 | 1262 | struct longjmp_breakpoint : public momentary_breakpoint |
3b0871f4 | 1263 | { |
73063f51 TT |
1264 | using momentary_breakpoint::momentary_breakpoint; |
1265 | ||
c1fc2657 | 1266 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1267 | }; |
1268 | ||
d77f58be SS |
1269 | /* Encapsulate tests for different types of tracepoints. */ |
1270 | ||
3b0871f4 SM |
1271 | static bool |
1272 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1273 | { |
1274 | return (type == bp_tracepoint | |
1275 | || type == bp_fast_tracepoint | |
7b572efb TT |
1276 | || type == bp_static_tracepoint |
1277 | || type == bp_static_marker_tracepoint); | |
d9b3f62e PA |
1278 | } |
1279 | ||
f2478a7e SM |
1280 | /* See breakpoint.h. */ |
1281 | ||
1282 | bool | |
d77f58be | 1283 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1284 | { |
d9b3f62e | 1285 | return is_tracepoint_type (b->type); |
a7bdde9e | 1286 | } |
d9b3f62e | 1287 | |
a5e364af SM |
1288 | /* Factory function to create an appropriate instance of breakpoint given |
1289 | TYPE. */ | |
1290 | ||
3b003a61 | 1291 | template<typename... Arg> |
74421c0b | 1292 | static std::unique_ptr<code_breakpoint> |
3b003a61 PA |
1293 | new_breakpoint_from_type (struct gdbarch *gdbarch, bptype type, |
1294 | Arg&&... args) | |
a5e364af | 1295 | { |
74421c0b | 1296 | code_breakpoint *b; |
a5e364af | 1297 | |
098f1272 TT |
1298 | switch (type) |
1299 | { | |
1300 | case bp_breakpoint: | |
1301 | case bp_hardware_breakpoint: | |
3b003a61 PA |
1302 | b = new ordinary_breakpoint (gdbarch, type, |
1303 | std::forward<Arg> (args)...); | |
098f1272 TT |
1304 | break; |
1305 | ||
1306 | case bp_fast_tracepoint: | |
1307 | case bp_static_tracepoint: | |
1308 | case bp_tracepoint: | |
3b003a61 PA |
1309 | b = new tracepoint (gdbarch, type, |
1310 | std::forward<Arg> (args)...); | |
098f1272 TT |
1311 | break; |
1312 | ||
6d7a8c56 | 1313 | case bp_static_marker_tracepoint: |
3b003a61 PA |
1314 | b = new static_marker_tracepoint (gdbarch, type, |
1315 | std::forward<Arg> (args)...); | |
6d7a8c56 TT |
1316 | break; |
1317 | ||
098f1272 | 1318 | case bp_dprintf: |
3b003a61 PA |
1319 | b = new dprintf_breakpoint (gdbarch, type, |
1320 | std::forward<Arg> (args)...); | |
098f1272 TT |
1321 | break; |
1322 | ||
098f1272 TT |
1323 | default: |
1324 | gdb_assert_not_reached ("invalid type"); | |
1325 | } | |
a5e364af | 1326 | |
74421c0b | 1327 | return std::unique_ptr<code_breakpoint> (b); |
a5e364af SM |
1328 | } |
1329 | ||
e5dd4106 | 1330 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1331 | breakpoint. This function will throw an exception if a problem is |
1332 | found. */ | |
48cb2d85 | 1333 | |
95a42b64 TT |
1334 | static void |
1335 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1336 | struct command_line *commands) | |
48cb2d85 | 1337 | { |
d77f58be | 1338 | if (is_tracepoint (b)) |
a7bdde9e | 1339 | { |
c9a6ce02 | 1340 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1341 | struct command_line *c; |
1342 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1343 | |
1344 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1345 | might have included a while-stepping action, while the new |
1346 | ones might not. */ | |
c9a6ce02 PA |
1347 | t->step_count = 0; |
1348 | ||
1349 | /* We need to verify that each top-level element of commands is | |
1350 | valid for tracepoints, that there's at most one | |
1351 | while-stepping element, and that the while-stepping's body | |
1352 | has valid tracing commands excluding nested while-stepping. | |
1353 | We also need to validate the tracepoint action line in the | |
1354 | context of the tracepoint --- validate_actionline actually | |
1355 | has side effects, like setting the tracepoint's | |
1356 | while-stepping STEP_COUNT, in addition to checking if the | |
1357 | collect/teval actions parse and make sense in the | |
1358 | tracepoint's context. */ | |
a7bdde9e VP |
1359 | for (c = commands; c; c = c->next) |
1360 | { | |
a7bdde9e VP |
1361 | if (c->control_type == while_stepping_control) |
1362 | { | |
1363 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1364 | error (_("The 'while-stepping' command " |
1365 | "cannot be used for fast tracepoint")); | |
7b572efb TT |
1366 | else if (b->type == bp_static_tracepoint |
1367 | || b->type == bp_static_marker_tracepoint) | |
3e43a32a MS |
1368 | error (_("The 'while-stepping' command " |
1369 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1370 | |
1371 | if (while_stepping) | |
3e43a32a MS |
1372 | error (_("The 'while-stepping' command " |
1373 | "can be used only once")); | |
a7bdde9e VP |
1374 | else |
1375 | while_stepping = c; | |
1376 | } | |
c9a6ce02 PA |
1377 | |
1378 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1379 | } |
1380 | if (while_stepping) | |
1381 | { | |
1382 | struct command_line *c2; | |
1383 | ||
12973681 TT |
1384 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1385 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1386 | for (; c2; c2 = c2->next) |
1387 | { | |
a7bdde9e VP |
1388 | if (c2->control_type == while_stepping_control) |
1389 | error (_("The 'while-stepping' command cannot be nested")); | |
1390 | } | |
1391 | } | |
1392 | } | |
1393 | else | |
1394 | { | |
1395 | check_no_tracepoint_commands (commands); | |
1396 | } | |
95a42b64 TT |
1397 | } |
1398 | ||
0fb4aa4b PA |
1399 | /* Return a vector of all the static tracepoints set at ADDR. The |
1400 | caller is responsible for releasing the vector. */ | |
1401 | ||
f51e0e20 | 1402 | std::vector<breakpoint *> |
0fb4aa4b PA |
1403 | static_tracepoints_here (CORE_ADDR addr) |
1404 | { | |
f51e0e20 | 1405 | std::vector<breakpoint *> found; |
0fb4aa4b | 1406 | |
43892fdf | 1407 | for (breakpoint *b : all_breakpoints ()) |
7b572efb TT |
1408 | if (b->type == bp_static_tracepoint |
1409 | || b->type == bp_static_marker_tracepoint) | |
0fb4aa4b | 1410 | { |
40cb8ca5 | 1411 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1412 | if (loc->address == addr) |
f51e0e20 | 1413 | found.push_back (b); |
0fb4aa4b PA |
1414 | } |
1415 | ||
1416 | return found; | |
1417 | } | |
1418 | ||
95a42b64 | 1419 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1420 | validate that only allowed commands are included. */ |
95a42b64 TT |
1421 | |
1422 | void | |
4a64f543 | 1423 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1424 | counted_command_line &&commands) |
95a42b64 | 1425 | { |
93921405 | 1426 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1427 | |
d1b0a7bf | 1428 | b->commands = std::move (commands); |
76727919 | 1429 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1430 | } |
1431 | ||
45a43567 TT |
1432 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1433 | is not the same as the "silent" that may appear in the breakpoint's | |
1434 | commands. */ | |
1435 | ||
1436 | void | |
1437 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1438 | { | |
1439 | int old_silent = b->silent; | |
1440 | ||
1441 | b->silent = silent; | |
1442 | if (old_silent != silent) | |
76727919 | 1443 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1444 | } |
1445 | ||
1446 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1447 | breakpoint work for any thread. */ | |
1448 | ||
1449 | void | |
1450 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1451 | { | |
1452 | int old_thread = b->thread; | |
1453 | ||
1454 | b->thread = thread; | |
1455 | if (old_thread != thread) | |
76727919 | 1456 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1457 | } |
1458 | ||
1459 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1460 | breakpoint work for any task. */ | |
1461 | ||
1462 | void | |
1463 | breakpoint_set_task (struct breakpoint *b, int task) | |
1464 | { | |
1465 | int old_task = b->task; | |
1466 | ||
1467 | b->task = task; | |
1468 | if (old_task != task) | |
76727919 | 1469 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1470 | } |
1471 | ||
95a42b64 | 1472 | static void |
896b6bda | 1473 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1474 | struct command_line *control) |
95a42b64 | 1475 | { |
d1b0a7bf | 1476 | counted_command_line cmd; |
999700cd PW |
1477 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1478 | NULL after the call to read_command_lines if the user provides an empty | |
1479 | list of command by just typing "end". */ | |
1480 | bool cmd_read = false; | |
95a42b64 | 1481 | |
896b6bda PA |
1482 | std::string new_arg; |
1483 | ||
95a42b64 TT |
1484 | if (arg == NULL || !*arg) |
1485 | { | |
da1df1db | 1486 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1487 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1488 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1489 | breakpoint_count); | |
95a42b64 | 1490 | else if (breakpoint_count > 0) |
896b6bda | 1491 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1492 | } |
da1df1db TBA |
1493 | else |
1494 | { | |
1495 | /* Create a copy of ARG. This is needed because the "commands" | |
1496 | command may be coming from a script. In that case, the read | |
1497 | line buffer is going to be overwritten in the lambda of | |
1498 | 'map_breakpoint_numbers' below when reading the next line | |
1499 | before we are are done parsing the breakpoint numbers. */ | |
1500 | new_arg = arg; | |
1501 | } | |
1502 | arg = new_arg.c_str (); | |
48649e1b TT |
1503 | |
1504 | map_breakpoint_numbers | |
1505 | (arg, [&] (breakpoint *b) | |
1506 | { | |
999700cd | 1507 | if (!cmd_read) |
48649e1b | 1508 | { |
999700cd | 1509 | gdb_assert (cmd == NULL); |
48649e1b | 1510 | if (control != NULL) |
12973681 | 1511 | cmd = control->body_list_0; |
48649e1b TT |
1512 | else |
1513 | { | |
81b1e71c TT |
1514 | std::string str |
1515 | = string_printf (_("Type commands for breakpoint(s) " | |
1516 | "%s, one per line."), | |
1517 | arg); | |
48649e1b | 1518 | |
60b3cef2 TT |
1519 | auto do_validate = [=] (const char *line) |
1520 | { | |
1521 | validate_actionline (line, b); | |
1522 | }; | |
1523 | gdb::function_view<void (const char *)> validator; | |
1524 | if (is_tracepoint (b)) | |
1525 | validator = do_validate; | |
1526 | ||
1527 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1528 | } |
999700cd | 1529 | cmd_read = true; |
48649e1b TT |
1530 | } |
1531 | ||
1532 | /* If a breakpoint was on the list more than once, we don't need to | |
1533 | do anything. */ | |
1534 | if (b->commands != cmd) | |
1535 | { | |
d1b0a7bf | 1536 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1537 | b->commands = cmd; |
76727919 | 1538 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1539 | } |
1540 | }); | |
95a42b64 TT |
1541 | } |
1542 | ||
1543 | static void | |
0b39b52e | 1544 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1545 | { |
1546 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1547 | } |
40c03ae8 EZ |
1548 | |
1549 | /* Like commands_command, but instead of reading the commands from | |
1550 | input stream, takes them from an already parsed command structure. | |
1551 | ||
1552 | This is used by cli-script.c to DTRT with breakpoint commands | |
1553 | that are part of if and while bodies. */ | |
1554 | enum command_control_type | |
896b6bda | 1555 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1556 | { |
95a42b64 TT |
1557 | commands_command_1 (arg, 0, cmd); |
1558 | return simple_control; | |
40c03ae8 | 1559 | } |
876fa593 JK |
1560 | |
1561 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1562 | ||
1563 | static int | |
1564 | bp_location_has_shadow (struct bp_location *bl) | |
1565 | { | |
1566 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1567 | return 0; | |
1568 | if (!bl->inserted) | |
1569 | return 0; | |
1570 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1571 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1572 | return 0; |
1573 | return 1; | |
1574 | } | |
1575 | ||
9d497a19 PA |
1576 | /* Update BUF, which is LEN bytes read from the target address |
1577 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1578 | contents. | |
1579 | ||
1580 | If READBUF is not NULL, this buffer must not overlap with the of | |
1581 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1582 | failed assertion internal error will be raised. */ | |
1583 | ||
1584 | static void | |
1585 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1586 | const gdb_byte *writebuf_org, | |
1587 | ULONGEST memaddr, LONGEST len, | |
1588 | struct bp_target_info *target_info, | |
1589 | struct gdbarch *gdbarch) | |
1590 | { | |
1591 | /* Now do full processing of the found relevant range of elements. */ | |
1592 | CORE_ADDR bp_addr = 0; | |
1593 | int bp_size = 0; | |
1594 | int bptoffset = 0; | |
1595 | ||
1596 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1597 | current_program_space->aspace, 0)) | |
1598 | { | |
1599 | /* The breakpoint is inserted in a different address space. */ | |
1600 | return; | |
1601 | } | |
1602 | ||
1603 | /* Addresses and length of the part of the breakpoint that | |
1604 | we need to copy. */ | |
1605 | bp_addr = target_info->placed_address; | |
1606 | bp_size = target_info->shadow_len; | |
1607 | ||
1608 | if (bp_addr + bp_size <= memaddr) | |
1609 | { | |
1610 | /* The breakpoint is entirely before the chunk of memory we are | |
1611 | reading. */ | |
1612 | return; | |
1613 | } | |
1614 | ||
1615 | if (bp_addr >= memaddr + len) | |
1616 | { | |
1617 | /* The breakpoint is entirely after the chunk of memory we are | |
1618 | reading. */ | |
1619 | return; | |
1620 | } | |
1621 | ||
1622 | /* Offset within shadow_contents. */ | |
1623 | if (bp_addr < memaddr) | |
1624 | { | |
1625 | /* Only copy the second part of the breakpoint. */ | |
1626 | bp_size -= memaddr - bp_addr; | |
1627 | bptoffset = memaddr - bp_addr; | |
1628 | bp_addr = memaddr; | |
1629 | } | |
1630 | ||
1631 | if (bp_addr + bp_size > memaddr + len) | |
1632 | { | |
1633 | /* Only copy the first part of the breakpoint. */ | |
1634 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1635 | } | |
1636 | ||
1637 | if (readbuf != NULL) | |
1638 | { | |
1639 | /* Verify that the readbuf buffer does not overlap with the | |
1640 | shadow_contents buffer. */ | |
1641 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1642 | || readbuf >= (target_info->shadow_contents | |
1643 | + target_info->shadow_len)); | |
1644 | ||
1645 | /* Update the read buffer with this inserted breakpoint's | |
1646 | shadow. */ | |
1647 | memcpy (readbuf + bp_addr - memaddr, | |
1648 | target_info->shadow_contents + bptoffset, bp_size); | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | const unsigned char *bp; | |
0d5ed153 MR |
1653 | CORE_ADDR addr = target_info->reqstd_address; |
1654 | int placed_size; | |
9d497a19 PA |
1655 | |
1656 | /* Update the shadow with what we want to write to memory. */ | |
1657 | memcpy (target_info->shadow_contents + bptoffset, | |
1658 | writebuf_org + bp_addr - memaddr, bp_size); | |
1659 | ||
1660 | /* Determine appropriate breakpoint contents and size for this | |
1661 | address. */ | |
0d5ed153 | 1662 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1663 | |
1664 | /* Update the final write buffer with this inserted | |
1665 | breakpoint's INSN. */ | |
1666 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1667 | } | |
1668 | } | |
1669 | ||
8defab1a | 1670 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1671 | by replacing any memory breakpoints with their shadowed contents. |
1672 | ||
35c63cd8 JB |
1673 | If READBUF is not NULL, this buffer must not overlap with any of |
1674 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1675 | a failed assertion internal error will be raised. | |
1676 | ||
876fa593 | 1677 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1678 | bl->address - bp_locations_placed_address_before_address_max |
1679 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1680 | The range we were requested to resolve shadows for is: |
1681 | memaddr ... memaddr + len | |
1682 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1683 | memaddr + len <= (bl->address |
f5336ca5 | 1684 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1685 | and: |
f5336ca5 | 1686 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1687 | |
8defab1a | 1688 | void |
f0ba3972 PA |
1689 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1690 | const gdb_byte *writebuf_org, | |
1691 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1692 | { |
4a64f543 MS |
1693 | /* Left boundary, right boundary and median element of our binary |
1694 | search. */ | |
876fa593 JK |
1695 | unsigned bc_l, bc_r, bc; |
1696 | ||
4a64f543 MS |
1697 | /* Find BC_L which is a leftmost element which may affect BUF |
1698 | content. It is safe to report lower value but a failure to | |
1699 | report higher one. */ | |
876fa593 JK |
1700 | |
1701 | bc_l = 0; | |
5d51cd5d | 1702 | bc_r = bp_locations.size (); |
876fa593 JK |
1703 | while (bc_l + 1 < bc_r) |
1704 | { | |
35df4500 | 1705 | struct bp_location *bl; |
876fa593 JK |
1706 | |
1707 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1708 | bl = bp_locations[bc]; |
876fa593 | 1709 | |
4a64f543 MS |
1710 | /* Check first BL->ADDRESS will not overflow due to the added |
1711 | constant. Then advance the left boundary only if we are sure | |
1712 | the BC element can in no way affect the BUF content (MEMADDR | |
1713 | to MEMADDR + LEN range). | |
876fa593 | 1714 | |
f5336ca5 | 1715 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1716 | offset so that we cannot miss a breakpoint with its shadow |
1717 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1718 | |
f5336ca5 | 1719 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1720 | >= bl->address) |
f5336ca5 | 1721 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1722 | <= memaddr)) |
876fa593 JK |
1723 | bc_l = bc; |
1724 | else | |
1725 | bc_r = bc; | |
1726 | } | |
1727 | ||
128070bb PA |
1728 | /* Due to the binary search above, we need to make sure we pick the |
1729 | first location that's at BC_L's address. E.g., if there are | |
1730 | multiple locations at the same address, BC_L may end up pointing | |
1731 | at a duplicate location, and miss the "master"/"inserted" | |
1732 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1733 | B: | |
1734 | ||
1735 | L1@A, L2@A, L3@B, ... | |
1736 | ||
1737 | BC_L could end up pointing at location L2, while the "master" | |
1738 | location could be L1. Since the `loc->inserted' flag is only set | |
1739 | on "master" locations, we'd forget to restore the shadow of L1 | |
1740 | and L2. */ | |
1741 | while (bc_l > 0 | |
f5336ca5 | 1742 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1743 | bc_l--; |
1744 | ||
876fa593 JK |
1745 | /* Now do full processing of the found relevant range of elements. */ |
1746 | ||
5d51cd5d | 1747 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1748 | { |
1749 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1750 | |
01add95b SM |
1751 | /* bp_location array has BL->OWNER always non-NULL. */ |
1752 | if (bl->owner->type == bp_none) | |
1753 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1754 | bl->owner->number); | |
ffce0d52 | 1755 | |
01add95b SM |
1756 | /* Performance optimization: any further element can no longer affect BUF |
1757 | content. */ | |
876fa593 | 1758 | |
01add95b SM |
1759 | if (bl->address >= bp_locations_placed_address_before_address_max |
1760 | && (memaddr + len | |
1761 | <= (bl->address | |
1762 | - bp_locations_placed_address_before_address_max))) | |
1763 | break; | |
876fa593 | 1764 | |
01add95b SM |
1765 | if (!bp_location_has_shadow (bl)) |
1766 | continue; | |
6c95b8df | 1767 | |
01add95b SM |
1768 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1769 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1770 | } | |
c906108c | 1771 | } |
9d497a19 | 1772 | |
f2478a7e | 1773 | /* See breakpoint.h. */ |
b775012e | 1774 | |
f2478a7e | 1775 | bool |
b775012e LM |
1776 | is_breakpoint (const struct breakpoint *bpt) |
1777 | { | |
1778 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1779 | || bpt->type == bp_hardware_breakpoint |
1780 | || bpt->type == bp_dprintf); | |
b775012e LM |
1781 | } |
1782 | ||
60e1c644 PA |
1783 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1784 | ||
f2478a7e | 1785 | static bool |
d77f58be | 1786 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1787 | { |
1788 | return (bpt->type == bp_hardware_watchpoint | |
1789 | || bpt->type == bp_read_watchpoint | |
1790 | || bpt->type == bp_access_watchpoint); | |
1791 | } | |
7270d8f2 | 1792 | |
f2478a7e | 1793 | /* See breakpoint.h. */ |
60e1c644 | 1794 | |
f2478a7e | 1795 | bool |
d77f58be | 1796 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1797 | { |
1798 | return (is_hardware_watchpoint (bpt) | |
1799 | || bpt->type == bp_watchpoint); | |
1800 | } | |
1801 | ||
3a5c3e22 PA |
1802 | /* Returns true if the current thread and its running state are safe |
1803 | to evaluate or update watchpoint B. Watchpoints on local | |
1804 | expressions need to be evaluated in the context of the thread that | |
1805 | was current when the watchpoint was created, and, that thread needs | |
1806 | to be stopped to be able to select the correct frame context. | |
1807 | Watchpoints on global expressions can be evaluated on any thread, | |
1808 | and in any state. It is presently left to the target allowing | |
1809 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1810 | |
1811 | static int | |
3a5c3e22 | 1812 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1813 | { |
c1fc2657 | 1814 | return (b->pspace == current_program_space |
d7e15655 TT |
1815 | && (b->watchpoint_thread == null_ptid |
1816 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1817 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1818 | } |
1819 | ||
d0fb5eae JK |
1820 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1821 | associated bp_watchpoint_scope breakpoint. */ | |
1822 | ||
1823 | static void | |
3a5c3e22 | 1824 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1825 | { |
c1fc2657 | 1826 | if (w->related_breakpoint != w) |
d0fb5eae | 1827 | { |
c1fc2657 SM |
1828 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1829 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1830 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1831 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1832 | w->related_breakpoint = w; | |
d0fb5eae | 1833 | } |
c1fc2657 | 1834 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1835 | } |
1836 | ||
bb9d5f81 PP |
1837 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1838 | watchpoint W. */ | |
1839 | ||
1840 | static struct value * | |
1841 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1842 | { | |
1843 | struct value *bit_val; | |
1844 | ||
1845 | if (val == NULL) | |
1846 | return NULL; | |
1847 | ||
1848 | bit_val = allocate_value (value_type (val)); | |
1849 | ||
1850 | unpack_value_bitfield (bit_val, | |
1851 | w->val_bitpos, | |
1852 | w->val_bitsize, | |
50888e42 | 1853 | value_contents_for_printing (val).data (), |
bb9d5f81 PP |
1854 | value_offset (val), |
1855 | val); | |
1856 | ||
1857 | return bit_val; | |
1858 | } | |
1859 | ||
6e14e441 PA |
1860 | /* Allocate a dummy location and add it to B. This is required |
1861 | because bpstat_stop_status requires a location to be able to report | |
1862 | stops. */ | |
c6d81124 PA |
1863 | |
1864 | static void | |
6e14e441 PA |
1865 | add_dummy_location (struct breakpoint *b, |
1866 | struct program_space *pspace) | |
c6d81124 | 1867 | { |
6e14e441 | 1868 | gdb_assert (b->loc == NULL); |
c6d81124 | 1869 | |
6e14e441 | 1870 | b->loc = new bp_location (b, bp_loc_other); |
c6d81124 | 1871 | b->loc->pspace = pspace; |
c6d81124 PA |
1872 | } |
1873 | ||
567e1b4e JB |
1874 | /* Assuming that B is a watchpoint: |
1875 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1876 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1877 | - Evaluate the condition if there is one, and store the result |
1878 | in b->loc->cond. | |
a5606eee VP |
1879 | - Update the list of values that must be watched in B->loc. |
1880 | ||
4a64f543 MS |
1881 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1882 | nothing. If this is local watchpoint that is out of scope, delete | |
1883 | it. | |
1884 | ||
1885 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1886 | removed + inserted on each stop here. Normal breakpoints must | |
1887 | never be removed because they might be missed by a running thread | |
1888 | when debugging in non-stop mode. On the other hand, hardware | |
1889 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1890 | to each LWP since they are stored in each LWP's hardware debug | |
1891 | registers. Therefore, such LWP must be stopped first in order to | |
1892 | be able to modify its hardware watchpoints. | |
1893 | ||
1894 | Hardware watchpoints must be reset exactly once after being | |
1895 | presented to the user. It cannot be done sooner, because it would | |
1896 | reset the data used to present the watchpoint hit to the user. And | |
1897 | it must not be done later because it could display the same single | |
1898 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1899 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1900 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1901 | not user-visible - its hit is suppressed if the memory content has | |
1902 | not changed. | |
1903 | ||
1904 | The following constraints influence the location where we can reset | |
1905 | hardware watchpoints: | |
1906 | ||
1907 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1908 | called several times when GDB stops. | |
1909 | ||
1910 | [linux] | |
1911 | * Multiple hardware watchpoints can be hit at the same time, | |
1912 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1913 | hit at a time as the reason for stopping, and all the other hits | |
1914 | are presented later, one after the other, each time the user | |
1915 | requests the execution to be resumed. Execution is not resumed | |
1916 | for the threads still having pending hit event stored in | |
1917 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1918 | the inferior on the first stop the thread hit event is kept being | |
1919 | reported from its cached value by linux_nat_stopped_data_address | |
1920 | until the real thread resume happens after the watchpoint gets | |
1921 | presented and thus its LWP_INFO->STATUS gets reset. | |
1922 | ||
1923 | Therefore the hardware watchpoint hit can get safely reset on the | |
1924 | watchpoint removal from inferior. */ | |
a79d3c27 | 1925 | |
b40ce68a | 1926 | static void |
3a5c3e22 | 1927 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1928 | { |
a5606eee | 1929 | int within_current_scope; |
a5606eee | 1930 | struct frame_id saved_frame_id; |
66076460 | 1931 | int frame_saved; |
a5606eee | 1932 | |
f6bc2008 PA |
1933 | /* If this is a local watchpoint, we only want to check if the |
1934 | watchpoint frame is in scope if the current thread is the thread | |
1935 | that was used to create the watchpoint. */ | |
1936 | if (!watchpoint_in_thread_scope (b)) | |
1937 | return; | |
1938 | ||
c1fc2657 | 1939 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1940 | return; |
1941 | ||
66076460 | 1942 | frame_saved = 0; |
a5606eee VP |
1943 | |
1944 | /* Determine if the watchpoint is within scope. */ | |
1945 | if (b->exp_valid_block == NULL) | |
1946 | within_current_scope = 1; | |
1947 | else | |
1948 | { | |
b5db5dfc UW |
1949 | struct frame_info *fi = get_current_frame (); |
1950 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1951 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1952 | ||
c9cf6e20 MG |
1953 | /* If we're at a point where the stack has been destroyed |
1954 | (e.g. in a function epilogue), unwinding may not work | |
1955 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1956 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1957 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1958 | return; |
66076460 DJ |
1959 | |
1960 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1961 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1962 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1963 | took a frame parameter, so that we didn't have to change the |
1964 | selected frame. */ | |
66076460 DJ |
1965 | frame_saved = 1; |
1966 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1967 | ||
a5606eee VP |
1968 | fi = frame_find_by_id (b->watchpoint_frame); |
1969 | within_current_scope = (fi != NULL); | |
1970 | if (within_current_scope) | |
1971 | select_frame (fi); | |
1972 | } | |
1973 | ||
b5db5dfc UW |
1974 | /* We don't free locations. They are stored in the bp_location array |
1975 | and update_global_location_list will eventually delete them and | |
1976 | remove breakpoints if needed. */ | |
c1fc2657 | 1977 | b->loc = NULL; |
b5db5dfc | 1978 | |
a5606eee VP |
1979 | if (within_current_scope && reparse) |
1980 | { | |
bbc13ae3 | 1981 | const char *s; |
d63d0675 | 1982 | |
4d01a485 | 1983 | b->exp.reset (); |
a4c50be3 TT |
1984 | s = (b->exp_string_reparse |
1985 | ? b->exp_string_reparse.get () | |
1986 | : b->exp_string.get ()); | |
1bb9788d | 1987 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1988 | /* If the meaning of expression itself changed, the old value is |
1989 | no longer relevant. We don't want to report a watchpoint hit | |
1990 | to the user when the old value and the new value may actually | |
1991 | be completely different objects. */ | |
fa4727a6 | 1992 | b->val = NULL; |
4c1d86d9 | 1993 | b->val_valid = false; |
60e1c644 PA |
1994 | |
1995 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1996 | expression is stored in the breakpoint object, not in the | |
1997 | locations (re)created below. */ | |
c1fc2657 | 1998 | if (b->cond_string != NULL) |
60e1c644 | 1999 | { |
4d01a485 | 2000 | b->cond_exp.reset (); |
60e1c644 | 2001 | |
6f781ee3 | 2002 | s = b->cond_string.get (); |
1bb9788d | 2003 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 2004 | } |
a5606eee | 2005 | } |
a5606eee VP |
2006 | |
2007 | /* If we failed to parse the expression, for example because | |
2008 | it refers to a global variable in a not-yet-loaded shared library, | |
2009 | don't try to insert watchpoint. We don't automatically delete | |
2010 | such watchpoint, though, since failure to parse expression | |
2011 | is different from out-of-scope watchpoint. */ | |
55f6301a | 2012 | if (!target_has_execution ()) |
2d134ed3 PA |
2013 | { |
2014 | /* Without execution, memory can't change. No use to try and | |
2015 | set watchpoint locations. The watchpoint will be reset when | |
2016 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
2017 | if (!can_use_hw_watchpoints) |
2018 | { | |
c47614fe | 2019 | if (b->works_in_software_mode ()) |
c1fc2657 | 2020 | b->type = bp_watchpoint; |
e8369a73 | 2021 | else |
638aa5a1 AB |
2022 | error (_("Can't set read/access watchpoint when " |
2023 | "hardware watchpoints are disabled.")); | |
e8369a73 | 2024 | } |
2d134ed3 PA |
2025 | } |
2026 | else if (within_current_scope && b->exp) | |
a5606eee | 2027 | { |
a6535de1 | 2028 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 2029 | struct value *v, *result; |
2d134ed3 | 2030 | struct program_space *frame_pspace; |
a5606eee | 2031 | |
1eaebe02 | 2032 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 2033 | &val_chain, false); |
a5606eee | 2034 | |
a5606eee VP |
2035 | /* Avoid setting b->val if it's already set. The meaning of |
2036 | b->val is 'the last value' user saw, and we should update | |
2037 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
2038 | happens, the code that reports it updates b->val directly. |
2039 | We don't keep track of the memory value for masked | |
2040 | watchpoints. */ | |
c1fc2657 | 2041 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 2042 | { |
bb9d5f81 | 2043 | if (b->val_bitsize != 0) |
850645cf TT |
2044 | v = extract_bitfield_from_watchpoint_value (b, v); |
2045 | b->val = release_value (v); | |
4c1d86d9 | 2046 | b->val_valid = true; |
fa4727a6 | 2047 | } |
a5606eee | 2048 | |
2d134ed3 PA |
2049 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
2050 | ||
a5606eee | 2051 | /* Look at each value on the value chain. */ |
a6535de1 TT |
2052 | gdb_assert (!val_chain.empty ()); |
2053 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 2054 | { |
a6535de1 TT |
2055 | v = iter.get (); |
2056 | ||
a5606eee VP |
2057 | /* If it's a memory location, and GDB actually needed |
2058 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
2059 | must watch it. If the first value returned is |
2060 | still lazy, that means an error occurred reading it; | |
2061 | watch it anyway in case it becomes readable. */ | |
a5606eee | 2062 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 2063 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
2064 | { |
2065 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 2066 | |
a5606eee VP |
2067 | /* We only watch structs and arrays if user asked |
2068 | for it explicitly, never if they just happen to | |
2069 | appear in the middle of some value chain. */ | |
fa4727a6 | 2070 | if (v == result |
78134374 SM |
2071 | || (vtype->code () != TYPE_CODE_STRUCT |
2072 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
2073 | { |
2074 | CORE_ADDR addr; | |
f486487f | 2075 | enum target_hw_bp_type type; |
a5606eee | 2076 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
2077 | int bitpos = 0, bitsize = 0; |
2078 | ||
2079 | if (value_bitsize (v) != 0) | |
2080 | { | |
2081 | /* Extract the bit parameters out from the bitfield | |
2082 | sub-expression. */ | |
2083 | bitpos = value_bitpos (v); | |
2084 | bitsize = value_bitsize (v); | |
2085 | } | |
2086 | else if (v == result && b->val_bitsize != 0) | |
2087 | { | |
2088 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2089 | lvalue whose bit parameters are saved in the fields | |
2090 | VAL_BITPOS and VAL_BITSIZE. */ | |
2091 | bitpos = b->val_bitpos; | |
2092 | bitsize = b->val_bitsize; | |
2093 | } | |
a5606eee | 2094 | |
42ae5230 | 2095 | addr = value_address (v); |
bb9d5f81 PP |
2096 | if (bitsize != 0) |
2097 | { | |
2098 | /* Skip the bytes that don't contain the bitfield. */ | |
2099 | addr += bitpos / 8; | |
2100 | } | |
2101 | ||
a5606eee | 2102 | type = hw_write; |
c1fc2657 | 2103 | if (b->type == bp_read_watchpoint) |
a5606eee | 2104 | type = hw_read; |
c1fc2657 | 2105 | else if (b->type == bp_access_watchpoint) |
a5606eee | 2106 | type = hw_access; |
3a5c3e22 | 2107 | |
ee89d0a4 | 2108 | loc = b->allocate_location (); |
c1fc2657 | 2109 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
a5606eee VP |
2110 | ; |
2111 | *tmp = loc; | |
8ee511af | 2112 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
2113 | |
2114 | loc->pspace = frame_pspace; | |
f17d9474 | 2115 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
2116 | |
2117 | if (bitsize != 0) | |
2118 | { | |
2119 | /* Just cover the bytes that make up the bitfield. */ | |
2120 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2121 | } | |
2122 | else | |
df86565b | 2123 | loc->length = value_type (v)->length (); |
bb9d5f81 | 2124 | |
a5606eee VP |
2125 | loc->watchpoint_type = type; |
2126 | } | |
2127 | } | |
9fa40276 TJB |
2128 | } |
2129 | ||
2130 | /* Change the type of breakpoint between hardware assisted or | |
2131 | an ordinary watchpoint depending on the hardware support | |
2132 | and free hardware slots. REPARSE is set when the inferior | |
2133 | is started. */ | |
a9634178 | 2134 | if (reparse) |
9fa40276 | 2135 | { |
e09342b5 | 2136 | int reg_cnt; |
9fa40276 | 2137 | enum bp_loc_type loc_type; |
a5606eee | 2138 | |
a9634178 | 2139 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2140 | |
2141 | if (reg_cnt) | |
9fa40276 TJB |
2142 | { |
2143 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2144 | enum bptype type; |
9fa40276 | 2145 | |
a9634178 TJB |
2146 | /* Use an exact watchpoint when there's only one memory region to be |
2147 | watched, and only one debug register is needed to watch it. */ | |
2148 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2149 | ||
9fa40276 | 2150 | /* We need to determine how many resources are already |
e09342b5 TJB |
2151 | used for all other hardware watchpoints plus this one |
2152 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2153 | this watchpoint in as well. */ |
2154 | ||
2155 | /* If this is a software watchpoint, we try to turn it | |
2156 | to a hardware one -- count resources as if B was of | |
2157 | hardware watchpoint type. */ | |
c1fc2657 | 2158 | type = b->type; |
a1398e0c PA |
2159 | if (type == bp_watchpoint) |
2160 | type = bp_hardware_watchpoint; | |
2161 | ||
2162 | /* This watchpoint may or may not have been placed on | |
2163 | the list yet at this point (it won't be in the list | |
2164 | if we're trying to create it for the first time, | |
2165 | through watch_command), so always account for it | |
2166 | manually. */ | |
2167 | ||
2168 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2169 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2170 | |
2171 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2172 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2173 | |
2174 | target_resources_ok | |
2175 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2176 | if (target_resources_ok <= 0) |
a9634178 | 2177 | { |
5a61e176 | 2178 | bool sw_mode = b->works_in_software_mode (); |
9c06b0b4 TJB |
2179 | |
2180 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2181 | error (_("Target does not support this type of " |
2182 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2183 | else if (target_resources_ok < 0 && !sw_mode) |
2184 | error (_("There are not enough available hardware " | |
2185 | "resources for this watchpoint.")); | |
a1398e0c PA |
2186 | |
2187 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2188 | b->type = bp_watchpoint; |
a1398e0c PA |
2189 | } |
2190 | else | |
2191 | { | |
2192 | /* If this was a software watchpoint, we've just | |
2193 | found we have enough resources to turn it to a | |
2194 | hardware watchpoint. Otherwise, this is a | |
2195 | nop. */ | |
c1fc2657 | 2196 | b->type = type; |
a9634178 | 2197 | } |
9fa40276 | 2198 | } |
c47614fe | 2199 | else if (!b->works_in_software_mode ()) |
638aa5a1 AB |
2200 | { |
2201 | if (!can_use_hw_watchpoints) | |
2202 | error (_("Can't set read/access watchpoint when " | |
2203 | "hardware watchpoints are disabled.")); | |
2204 | else | |
2205 | error (_("Expression cannot be implemented with " | |
2206 | "read/access watchpoint.")); | |
2207 | } | |
9fa40276 | 2208 | else |
c1fc2657 | 2209 | b->type = bp_watchpoint; |
9fa40276 | 2210 | |
6e14e441 | 2211 | loc_type = (b->type == bp_watchpoint? bp_loc_software_watchpoint |
9fa40276 | 2212 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2213 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2214 | bl->loc_type = loc_type; |
2215 | } | |
2216 | ||
c7437ca6 PA |
2217 | /* If a software watchpoint is not watching any memory, then the |
2218 | above left it without any location set up. But, | |
2219 | bpstat_stop_status requires a location to be able to report | |
2220 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 | 2221 | if (b->type == bp_watchpoint && b->loc == NULL) |
6e14e441 | 2222 | add_dummy_location (b, frame_pspace); |
a5606eee VP |
2223 | } |
2224 | else if (!within_current_scope) | |
7270d8f2 | 2225 | { |
6cb06a8c | 2226 | gdb_printf (_("\ |
ac74f770 MS |
2227 | Watchpoint %d deleted because the program has left the block\n\ |
2228 | in which its expression is valid.\n"), | |
6cb06a8c | 2229 | b->number); |
d0fb5eae | 2230 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2231 | } |
a5606eee VP |
2232 | |
2233 | /* Restore the selected frame. */ | |
66076460 DJ |
2234 | if (frame_saved) |
2235 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2236 | } |
2237 | ||
a5606eee | 2238 | |
74960c60 | 2239 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2240 | inserted in the inferior. We don't differentiate the type of BL's owner |
2241 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2242 | breakpoint_ops is not defined, because in insert_bp_location, | |
2243 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2244 | static int |
35df4500 | 2245 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2246 | { |
35df4500 | 2247 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2248 | return 0; |
2249 | ||
35df4500 | 2250 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2251 | return 0; |
2252 | ||
b5fa468f TBA |
2253 | if (!bl->enabled || bl->disabled_by_cond |
2254 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2255 | return 0; |
2256 | ||
f8eba3c6 TT |
2257 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2258 | return 0; | |
2259 | ||
56710373 PA |
2260 | /* This is set for example, when we're attached to the parent of a |
2261 | vfork, and have detached from the child. The child is running | |
2262 | free, and we expect it to do an exec or exit, at which point the | |
2263 | OS makes the parent schedulable again (and the target reports | |
2264 | that the vfork is done). Until the child is done with the shared | |
2265 | memory region, do not insert breakpoints in the parent, otherwise | |
2266 | the child could still trip on the parent's breakpoints. Since | |
2267 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2268 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2269 | return 0; |
2270 | ||
31e77af2 | 2271 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2272 | location, except if the breakpoint is a single-step breakpoint, |
2273 | and the breakpoint's thread is the thread which is stepping past | |
2274 | a breakpoint. */ | |
31e77af2 PA |
2275 | if ((bl->loc_type == bp_loc_software_breakpoint |
2276 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2277 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2278 | bl->address) |
2279 | /* The single-step breakpoint may be inserted at the location | |
2280 | we're trying to step if the instruction branches to itself. | |
2281 | However, the instruction won't be executed at all and it may | |
2282 | break the semantics of the instruction, for example, the | |
2283 | instruction is a conditional branch or updates some flags. | |
2284 | We can't fix it unless GDB is able to emulate the instruction | |
2285 | or switch to displaced stepping. */ | |
2286 | && !(bl->owner->type == bp_single_step | |
2287 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2288 | { |
1eb8556f SM |
2289 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2290 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2291 | return 0; |
2292 | } | |
31e77af2 | 2293 | |
963f9c80 PA |
2294 | /* Don't insert watchpoints if we're trying to step past the |
2295 | instruction that triggered one. */ | |
2296 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2297 | && stepping_past_nonsteppable_watchpoint ()) | |
2298 | { | |
1eb8556f | 2299 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2300 | "skipping watchpoint at %s:%d", |
1eb8556f | 2301 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2302 | return 0; |
2303 | } | |
2304 | ||
74960c60 VP |
2305 | return 1; |
2306 | } | |
2307 | ||
934709f0 PW |
2308 | /* Same as should_be_inserted but does the check assuming |
2309 | that the location is not duplicated. */ | |
2310 | ||
2311 | static int | |
2312 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2313 | { | |
2314 | int result; | |
2315 | const int save_duplicate = bl->duplicate; | |
2316 | ||
2317 | bl->duplicate = 0; | |
2318 | result = should_be_inserted (bl); | |
2319 | bl->duplicate = save_duplicate; | |
2320 | return result; | |
2321 | } | |
2322 | ||
b775012e LM |
2323 | /* Parses a conditional described by an expression COND into an |
2324 | agent expression bytecode suitable for evaluation | |
2325 | by the bytecode interpreter. Return NULL if there was | |
2326 | any error during parsing. */ | |
2327 | ||
833177a4 | 2328 | static agent_expr_up |
b775012e LM |
2329 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2330 | { | |
833177a4 | 2331 | if (cond == NULL) |
b775012e LM |
2332 | return NULL; |
2333 | ||
833177a4 PA |
2334 | agent_expr_up aexpr; |
2335 | ||
b775012e LM |
2336 | /* We don't want to stop processing, so catch any errors |
2337 | that may show up. */ | |
a70b8144 | 2338 | try |
b775012e | 2339 | { |
036e657b | 2340 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2341 | } |
2342 | ||
230d2906 | 2343 | catch (const gdb_exception_error &ex) |
b775012e LM |
2344 | { |
2345 | /* If we got here, it means the condition could not be parsed to a valid | |
2346 | bytecode expression and thus can't be evaluated on the target's side. | |
2347 | It's no use iterating through the conditions. */ | |
b775012e LM |
2348 | } |
2349 | ||
2350 | /* We have a valid agent expression. */ | |
2351 | return aexpr; | |
2352 | } | |
2353 | ||
2354 | /* Based on location BL, create a list of breakpoint conditions to be | |
2355 | passed on to the target. If we have duplicated locations with different | |
2356 | conditions, we will add such conditions to the list. The idea is that the | |
2357 | target will evaluate the list of conditions and will only notify GDB when | |
2358 | one of them is true. */ | |
2359 | ||
2360 | static void | |
2361 | build_target_condition_list (struct bp_location *bl) | |
2362 | { | |
b775012e LM |
2363 | int null_condition_or_parse_error = 0; |
2364 | int modified = bl->needs_update; | |
b775012e | 2365 | |
8b4f3082 | 2366 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2367 | bl->target_info.conditions.clear (); |
8b4f3082 | 2368 | |
b775012e LM |
2369 | /* This is only meaningful if the target is |
2370 | evaluating conditions and if the user has | |
2371 | opted for condition evaluation on the target's | |
2372 | side. */ | |
2373 | if (gdb_evaluates_breakpoint_condition_p () | |
2374 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2375 | return; | |
2376 | ||
e0d9a270 SM |
2377 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2378 | ||
b775012e | 2379 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2380 | conditions or conditions that fail to parse to a valid agent |
2381 | expression bytecode. If any of these happen, then it's no use to | |
2382 | send conditions to the target since this location will always | |
2383 | trigger and generate a response back to GDB. Note we consider | |
2384 | all locations at the same address irrespective of type, i.e., | |
2385 | even if the locations aren't considered duplicates (e.g., | |
2386 | software breakpoint and hardware breakpoint at the same | |
2387 | address). */ | |
e0d9a270 | 2388 | for (bp_location *loc : loc_range) |
b775012e | 2389 | { |
b775012e LM |
2390 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2391 | { | |
2392 | if (modified) | |
2393 | { | |
b775012e LM |
2394 | /* Re-parse the conditions since something changed. In that |
2395 | case we already freed the condition bytecodes (see | |
2396 | force_breakpoint_reinsertion). We just | |
2397 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2398 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2399 | loc->cond.get ()); | |
b775012e LM |
2400 | } |
2401 | ||
2402 | /* If we have a NULL bytecode expression, it means something | |
2403 | went wrong or we have a null condition expression. */ | |
2404 | if (!loc->cond_bytecode) | |
2405 | { | |
2406 | null_condition_or_parse_error = 1; | |
2407 | break; | |
2408 | } | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | /* If any of these happened, it means we will have to evaluate the conditions | |
2413 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2414 | for all the other duplicate locations, thus we free all of them here. | |
2415 | ||
2416 | This is so we have a finer control over which locations' conditions are | |
2417 | being evaluated by GDB or the remote stub. */ | |
2418 | if (null_condition_or_parse_error) | |
2419 | { | |
e0d9a270 | 2420 | for (bp_location *loc : loc_range) |
b775012e | 2421 | { |
b775012e LM |
2422 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2423 | { | |
2424 | /* Only go as far as the first NULL bytecode is | |
2425 | located. */ | |
2426 | if (!loc->cond_bytecode) | |
2427 | return; | |
2428 | ||
833177a4 | 2429 | loc->cond_bytecode.reset (); |
b775012e LM |
2430 | } |
2431 | } | |
2432 | } | |
2433 | ||
7f32a4d5 PA |
2434 | /* No NULL conditions or failed bytecode generation. Build a |
2435 | condition list for this location's address. If we have software | |
2436 | and hardware locations at the same address, they aren't | |
2437 | considered duplicates, but we still marge all the conditions | |
2438 | anyway, as it's simpler, and doesn't really make a practical | |
2439 | difference. */ | |
e0d9a270 SM |
2440 | for (bp_location *loc : loc_range) |
2441 | if (loc->cond | |
2442 | && is_breakpoint (loc->owner) | |
2443 | && loc->pspace->num == bl->pspace->num | |
2444 | && loc->owner->enable_state == bp_enabled | |
2445 | && loc->enabled | |
2446 | && !loc->disabled_by_cond) | |
2447 | { | |
2448 | /* Add the condition to the vector. This will be used later | |
2449 | to send the conditions to the target. */ | |
2450 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2451 | } | |
b775012e LM |
2452 | |
2453 | return; | |
2454 | } | |
2455 | ||
d3ce09f5 SS |
2456 | /* Parses a command described by string CMD into an agent expression |
2457 | bytecode suitable for evaluation by the bytecode interpreter. | |
2458 | Return NULL if there was any error during parsing. */ | |
2459 | ||
833177a4 | 2460 | static agent_expr_up |
d3ce09f5 SS |
2461 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2462 | { | |
bbc13ae3 KS |
2463 | const char *cmdrest; |
2464 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2465 | struct gdbarch *gdbarch = get_current_arch (); |
2466 | ||
833177a4 | 2467 | if (cmd == NULL) |
d3ce09f5 SS |
2468 | return NULL; |
2469 | ||
2470 | cmdrest = cmd; | |
2471 | ||
2472 | if (*cmdrest == ',') | |
2473 | ++cmdrest; | |
f1735a53 | 2474 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2475 | |
2476 | if (*cmdrest++ != '"') | |
2477 | error (_("No format string following the location")); | |
2478 | ||
2479 | format_start = cmdrest; | |
2480 | ||
8e481c3b | 2481 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2482 | |
2483 | format_end = cmdrest; | |
2484 | ||
2485 | if (*cmdrest++ != '"') | |
2486 | error (_("Bad format string, non-terminated '\"'.")); | |
2487 | ||
f1735a53 | 2488 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2489 | |
2490 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2491 | error (_("Invalid argument syntax")); | |
2492 | ||
2493 | if (*cmdrest == ',') | |
2494 | cmdrest++; | |
f1735a53 | 2495 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2496 | |
2497 | /* For each argument, make an expression. */ | |
2498 | ||
8e481c3b | 2499 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2500 | while (*cmdrest != '\0') |
2501 | { | |
bbc13ae3 | 2502 | const char *cmd1; |
d3ce09f5 SS |
2503 | |
2504 | cmd1 = cmdrest; | |
4d01a485 | 2505 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2506 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2507 | cmdrest = cmd1; |
2508 | if (*cmdrest == ',') | |
2509 | ++cmdrest; | |
2510 | } | |
2511 | ||
833177a4 PA |
2512 | agent_expr_up aexpr; |
2513 | ||
d3ce09f5 SS |
2514 | /* We don't want to stop processing, so catch any errors |
2515 | that may show up. */ | |
a70b8144 | 2516 | try |
d3ce09f5 | 2517 | { |
036e657b JB |
2518 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2519 | format_start, format_end - format_start, | |
8e481c3b | 2520 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2521 | } |
230d2906 | 2522 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2523 | { |
2524 | /* If we got here, it means the command could not be parsed to a valid | |
2525 | bytecode expression and thus can't be evaluated on the target's side. | |
2526 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2527 | } |
492d29ea | 2528 | |
d3ce09f5 SS |
2529 | /* We have a valid agent expression, return it. */ |
2530 | return aexpr; | |
2531 | } | |
2532 | ||
2533 | /* Based on location BL, create a list of breakpoint commands to be | |
2534 | passed on to the target. If we have duplicated locations with | |
2535 | different commands, we will add any such to the list. */ | |
2536 | ||
2537 | static void | |
2538 | build_target_command_list (struct bp_location *bl) | |
2539 | { | |
d3ce09f5 SS |
2540 | int null_command_or_parse_error = 0; |
2541 | int modified = bl->needs_update; | |
d3ce09f5 | 2542 | |
3cde5c42 PA |
2543 | /* Clear commands left over from a previous insert. */ |
2544 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2545 | |
41fac0cf | 2546 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2547 | return; |
2548 | ||
41fac0cf PA |
2549 | /* For now, limit to agent-style dprintf breakpoints. */ |
2550 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2551 | return; |
2552 | ||
e0d9a270 SM |
2553 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2554 | ||
7f32a4d5 PA |
2555 | /* For now, if we have any location at the same address that isn't a |
2556 | dprintf, don't install the target-side commands, as that would | |
2557 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2558 | control. */ |
e0d9a270 SM |
2559 | for (bp_location *loc : loc_range) |
2560 | if (is_breakpoint (loc->owner) | |
2561 | && loc->pspace->num == bl->pspace->num | |
2562 | && loc->owner->type != bp_dprintf) | |
2563 | return; | |
41fac0cf | 2564 | |
d3ce09f5 SS |
2565 | /* Do a first pass to check for locations with no assigned |
2566 | conditions or conditions that fail to parse to a valid agent expression | |
2567 | bytecode. If any of these happen, then it's no use to send conditions | |
2568 | to the target since this location will always trigger and generate a | |
2569 | response back to GDB. */ | |
e0d9a270 | 2570 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2571 | { |
d3ce09f5 SS |
2572 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2573 | { | |
2574 | if (modified) | |
2575 | { | |
d3ce09f5 SS |
2576 | /* Re-parse the commands since something changed. In that |
2577 | case we already freed the command bytecodes (see | |
2578 | force_breakpoint_reinsertion). We just | |
2579 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2580 | loc->cmd_bytecode |
2581 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2582 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2583 | } |
2584 | ||
2585 | /* If we have a NULL bytecode expression, it means something | |
2586 | went wrong or we have a null command expression. */ | |
2587 | if (!loc->cmd_bytecode) | |
2588 | { | |
2589 | null_command_or_parse_error = 1; | |
2590 | break; | |
2591 | } | |
2592 | } | |
2593 | } | |
2594 | ||
2595 | /* If anything failed, then we're not doing target-side commands, | |
2596 | and so clean up. */ | |
2597 | if (null_command_or_parse_error) | |
2598 | { | |
e0d9a270 SM |
2599 | for (bp_location *loc : loc_range) |
2600 | if (is_breakpoint (loc->owner) | |
2601 | && loc->pspace->num == bl->pspace->num) | |
2602 | { | |
2603 | /* Only go as far as the first NULL bytecode is | |
2604 | located. */ | |
2605 | if (loc->cmd_bytecode == NULL) | |
2606 | return; | |
d3ce09f5 | 2607 | |
e0d9a270 SM |
2608 | loc->cmd_bytecode.reset (); |
2609 | } | |
d3ce09f5 SS |
2610 | } |
2611 | ||
7f32a4d5 PA |
2612 | /* No NULL commands or failed bytecode generation. Build a command |
2613 | list for all duplicate locations at this location's address. | |
2614 | Note that here we must care for whether the breakpoint location | |
2615 | types are considered duplicates, otherwise, say, if we have a | |
2616 | software and hardware location at the same address, the target | |
2617 | could end up running the commands twice. For the moment, we only | |
2618 | support targets-side commands with dprintf, but it doesn't hurt | |
2619 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2620 | for (bp_location *loc : loc_range) |
2621 | if (breakpoint_locations_match (bl, loc) | |
2622 | && loc->owner->extra_string | |
2623 | && is_breakpoint (loc->owner) | |
2624 | && loc->pspace->num == bl->pspace->num | |
2625 | && loc->owner->enable_state == bp_enabled | |
2626 | && loc->enabled | |
2627 | && !loc->disabled_by_cond) | |
2628 | { | |
2629 | /* Add the command to the vector. This will be used later | |
2630 | to send the commands to the target. */ | |
2631 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2632 | } | |
d3ce09f5 SS |
2633 | |
2634 | bl->target_info.persist = 0; | |
2635 | /* Maybe flag this location as persistent. */ | |
2636 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2637 | bl->target_info.persist = 1; | |
2638 | } | |
2639 | ||
833b7ab5 YQ |
2640 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2641 | of breakpoint according to ADDR except single-step breakpoint. | |
2642 | Get the kind of single-step breakpoint according to the current | |
2643 | registers state. */ | |
cd6c3b4f YQ |
2644 | |
2645 | static int | |
2646 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2647 | { | |
833b7ab5 YQ |
2648 | if (bl->owner->type == bp_single_step) |
2649 | { | |
2650 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2651 | struct regcache *regcache; | |
2652 | ||
00431a78 | 2653 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2654 | |
2655 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2656 | regcache, addr); | |
2657 | } | |
2658 | else | |
2659 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2660 | } |
2661 | ||
35df4500 TJB |
2662 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2663 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2664 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2665 | Returns 0 for success, 1 if the bp_location type is not supported or |
2666 | -1 for failure. | |
879bfdc2 | 2667 | |
4a64f543 MS |
2668 | NOTE drow/2003-09-09: This routine could be broken down to an |
2669 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2670 | static int |
35df4500 | 2671 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2672 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2673 | int *disabled_breaks, |
dd61ec5c MW |
2674 | int *hw_breakpoint_error, |
2675 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2676 | { |
cc06b668 | 2677 | gdb_exception bp_excpt; |
879bfdc2 | 2678 | |
b775012e | 2679 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2680 | return 0; |
2681 | ||
35c63cd8 JB |
2682 | /* Note we don't initialize bl->target_info, as that wipes out |
2683 | the breakpoint location's shadow_contents if the breakpoint | |
2684 | is still inserted at that location. This in turn breaks | |
2685 | target_read_memory which depends on these buffers when | |
2686 | a memory read is requested at the breakpoint location: | |
2687 | Once the target_info has been wiped, we fail to see that | |
2688 | we have a breakpoint inserted at that address and thus | |
2689 | read the breakpoint instead of returning the data saved in | |
2690 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2691 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2692 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2693 | bl->target_info.length = bl->length; |
8181d85f | 2694 | |
b775012e LM |
2695 | /* When working with target-side conditions, we must pass all the conditions |
2696 | for the same breakpoint address down to the target since GDB will not | |
2697 | insert those locations. With a list of breakpoint conditions, the target | |
2698 | can decide when to stop and notify GDB. */ | |
2699 | ||
2700 | if (is_breakpoint (bl->owner)) | |
2701 | { | |
2702 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2703 | build_target_command_list (bl); |
2704 | /* Reset the modification marker. */ | |
b775012e LM |
2705 | bl->needs_update = 0; |
2706 | } | |
2707 | ||
7f32a4d5 PA |
2708 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2709 | set at a read-only address, then a breakpoint location will have | |
2710 | been changed to hardware breakpoint before we get here. If it is | |
2711 | "off" however, error out before actually trying to insert the | |
2712 | breakpoint, with a nicer error message. */ | |
35df4500 | 2713 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2714 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2715 | { |
7f32a4d5 | 2716 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2717 | |
7f32a4d5 PA |
2718 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2719 | { | |
6cb06a8c TT |
2720 | gdb_printf (tmp_error_stream, |
2721 | _("Cannot insert breakpoint %d.\n" | |
2722 | "Cannot set software breakpoint " | |
2723 | "at read-only address %s\n"), | |
2724 | bl->owner->number, | |
2725 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2726 | return 1; |
765dc015 | 2727 | } |
7f32a4d5 PA |
2728 | } |
2729 | ||
2730 | if (bl->loc_type == bp_loc_software_breakpoint | |
2731 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2732 | { | |
879bfdc2 DJ |
2733 | /* First check to see if we have to handle an overlay. */ |
2734 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2735 | || bl->section == NULL |
2736 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2737 | { |
2738 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2739 | try |
dd61ec5c | 2740 | { |
0000e5cc PA |
2741 | int val; |
2742 | ||
c47614fe | 2743 | val = bl->owner->insert_location (bl); |
0000e5cc | 2744 | if (val) |
688fca4f | 2745 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2746 | } |
94aeb44b | 2747 | catch (gdb_exception &e) |
dd61ec5c | 2748 | { |
94aeb44b | 2749 | bp_excpt = std::move (e); |
dd61ec5c | 2750 | } |
879bfdc2 DJ |
2751 | } |
2752 | else | |
2753 | { | |
4a64f543 | 2754 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2755 | Shall we set a breakpoint at the LMA? */ |
2756 | if (!overlay_events_enabled) | |
2757 | { | |
2758 | /* Yes -- overlay event support is not active, | |
2759 | so we must try to set a breakpoint at the LMA. | |
2760 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2761 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2762 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2763 | bl->owner->number); |
879bfdc2 DJ |
2764 | else |
2765 | { | |
35df4500 TJB |
2766 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2767 | bl->section); | |
879bfdc2 | 2768 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2769 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2770 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2771 | |
2772 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2773 | try |
0000e5cc PA |
2774 | { |
2775 | int val; | |
2776 | ||
579c6ad9 | 2777 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2778 | = breakpoint_kind (bl, &addr); |
2779 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2780 | val = target_insert_breakpoint (bl->gdbarch, |
2781 | &bl->overlay_target_info); | |
2782 | if (val) | |
688fca4f PA |
2783 | bp_excpt |
2784 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2785 | } |
94aeb44b | 2786 | catch (gdb_exception &e) |
0000e5cc | 2787 | { |
94aeb44b | 2788 | bp_excpt = std::move (e); |
0000e5cc PA |
2789 | } |
2790 | ||
688fca4f | 2791 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2792 | gdb_printf (tmp_error_stream, |
2793 | "Overlay breakpoint %d " | |
2794 | "failed: in ROM?\n", | |
2795 | bl->owner->number); | |
879bfdc2 DJ |
2796 | } |
2797 | } | |
2798 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2799 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2800 | { |
2801 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2802 | try |
dda83cd7 | 2803 | { |
0000e5cc PA |
2804 | int val; |
2805 | ||
c47614fe | 2806 | val = bl->owner->insert_location (bl); |
0000e5cc | 2807 | if (val) |
688fca4f | 2808 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2809 | } |
94aeb44b | 2810 | catch (gdb_exception &e) |
dda83cd7 | 2811 | { |
94aeb44b | 2812 | bp_excpt = std::move (e); |
dda83cd7 | 2813 | } |
879bfdc2 DJ |
2814 | } |
2815 | else | |
2816 | { | |
2817 | /* No. This breakpoint will not be inserted. | |
2818 | No error, but do not mark the bp as 'inserted'. */ | |
2819 | return 0; | |
2820 | } | |
2821 | } | |
2822 | ||
688fca4f | 2823 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2824 | { |
2825 | /* Can't set the breakpoint. */ | |
0000e5cc | 2826 | |
80dc83fd AB |
2827 | /* If the target has closed then it will have deleted any |
2828 | breakpoints inserted within the target inferior, as a result | |
2829 | any further attempts to interact with the breakpoint objects | |
2830 | is not possible. Just rethrow the error. */ | |
2831 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2832 | throw bp_excpt; | |
2833 | gdb_assert (bl->owner != nullptr); | |
2834 | ||
0000e5cc PA |
2835 | /* In some cases, we might not be able to insert a |
2836 | breakpoint in a shared library that has already been | |
2837 | removed, but we have not yet processed the shlib unload | |
2838 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2839 | breakpoint insertion themselves can't tell why the |
2840 | breakpoint insertion failed (e.g., the remote target | |
2841 | doesn't define error codes), so we must treat generic | |
2842 | errors as memory errors. */ | |
688fca4f PA |
2843 | if (bp_excpt.reason == RETURN_ERROR |
2844 | && (bp_excpt.error == GENERIC_ERROR | |
2845 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2846 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2847 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2848 | || shared_objfile_contains_address_p (bl->pspace, |
2849 | bl->address))) | |
879bfdc2 | 2850 | { |
4a64f543 | 2851 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2852 | bl->shlib_disabled = 1; |
76727919 | 2853 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2854 | if (!*disabled_breaks) |
2855 | { | |
6cb06a8c TT |
2856 | gdb_printf (tmp_error_stream, |
2857 | "Cannot insert breakpoint %d.\n", | |
2858 | bl->owner->number); | |
2859 | gdb_printf (tmp_error_stream, | |
2860 | "Temporarily disabling shared " | |
2861 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2862 | } |
2863 | *disabled_breaks = 1; | |
6cb06a8c TT |
2864 | gdb_printf (tmp_error_stream, |
2865 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2866 | return 0; |
879bfdc2 DJ |
2867 | } |
2868 | else | |
879bfdc2 | 2869 | { |
35df4500 | 2870 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2871 | { |
0000e5cc | 2872 | *hw_breakpoint_error = 1; |
688fca4f | 2873 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2874 | gdb_printf (tmp_error_stream, |
2875 | "Cannot insert hardware breakpoint %d%s", | |
2876 | bl->owner->number, | |
2877 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2878 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2879 | gdb_printf (tmp_error_stream, "%s.\n", |
2880 | bp_excpt.what ()); | |
879bfdc2 DJ |
2881 | } |
2882 | else | |
2883 | { | |
688fca4f | 2884 | if (bp_excpt.message == NULL) |
0000e5cc | 2885 | { |
1ccbe998 | 2886 | std::string message |
0000e5cc PA |
2887 | = memory_error_message (TARGET_XFER_E_IO, |
2888 | bl->gdbarch, bl->address); | |
0000e5cc | 2889 | |
6cb06a8c TT |
2890 | gdb_printf (tmp_error_stream, |
2891 | "Cannot insert breakpoint %d.\n" | |
2892 | "%s\n", | |
2893 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2894 | } |
2895 | else | |
2896 | { | |
6cb06a8c TT |
2897 | gdb_printf (tmp_error_stream, |
2898 | "Cannot insert breakpoint %d: %s\n", | |
2899 | bl->owner->number, | |
2900 | bp_excpt.what ()); | |
0000e5cc | 2901 | } |
879bfdc2 | 2902 | } |
0000e5cc | 2903 | return 1; |
879bfdc2 DJ |
2904 | |
2905 | } | |
2906 | } | |
2907 | else | |
35df4500 | 2908 | bl->inserted = 1; |
879bfdc2 | 2909 | |
0000e5cc | 2910 | return 0; |
879bfdc2 DJ |
2911 | } |
2912 | ||
35df4500 | 2913 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2914 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2915 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2916 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2917 | { |
0000e5cc PA |
2918 | int val; |
2919 | ||
c47614fe | 2920 | val = bl->owner->insert_location (bl); |
85d721b8 PA |
2921 | |
2922 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2923 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2924 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2925 | { |
85d721b8 PA |
2926 | /* But don't try to insert it, if there's already another |
2927 | hw_access location that would be considered a duplicate | |
2928 | of this one. */ | |
48d7020b | 2929 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2930 | if (loc != bl |
85d721b8 | 2931 | && loc->watchpoint_type == hw_access |
35df4500 | 2932 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2933 | { |
35df4500 TJB |
2934 | bl->duplicate = 1; |
2935 | bl->inserted = 1; | |
2936 | bl->target_info = loc->target_info; | |
2937 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2938 | val = 0; |
2939 | break; | |
2940 | } | |
2941 | ||
2942 | if (val == 1) | |
2943 | { | |
77b06cd7 | 2944 | bl->watchpoint_type = hw_access; |
c47614fe | 2945 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2946 | |
2947 | if (val) | |
2948 | /* Back to the original value. */ | |
2949 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2950 | } |
2951 | } | |
2952 | ||
35df4500 | 2953 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2954 | } |
2955 | ||
35df4500 | 2956 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2957 | { |
0000e5cc PA |
2958 | int val; |
2959 | ||
c47614fe | 2960 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2961 | if (val) |
2962 | { | |
2963 | bl->owner->enable_state = bp_disabled; | |
2964 | ||
2965 | if (val == 1) | |
2966 | warning (_("\ | |
2967 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2968 | of catchpoint."), bl->owner->number); | |
2969 | else | |
2970 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2971 | } | |
2972 | ||
2973 | bl->inserted = (val == 0); | |
1640b821 DJ |
2974 | |
2975 | /* We've already printed an error message if there was a problem | |
2976 | inserting this catchpoint, and we've disabled the catchpoint, | |
2977 | so just return success. */ | |
2978 | return 0; | |
879bfdc2 DJ |
2979 | } |
2980 | ||
2981 | return 0; | |
2982 | } | |
2983 | ||
6c95b8df PA |
2984 | /* This function is called when program space PSPACE is about to be |
2985 | deleted. It takes care of updating breakpoints to not reference | |
2986 | PSPACE anymore. */ | |
2987 | ||
2988 | void | |
2989 | breakpoint_program_space_exit (struct program_space *pspace) | |
2990 | { | |
6c95b8df | 2991 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2992 | for (breakpoint *b : all_breakpoints_safe ()) |
2993 | if (b->pspace == pspace) | |
2994 | delete_breakpoint (b); | |
6c95b8df PA |
2995 | |
2996 | /* Breakpoints set through other program spaces could have locations | |
2997 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2998 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2999 | { |
3000 | struct bp_location *tmp; | |
3001 | ||
3002 | if (loc->pspace == pspace) | |
3003 | { | |
2bdf28a0 | 3004 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
3005 | if (loc->owner->loc == loc) |
3006 | loc->owner->loc = loc->next; | |
3007 | else | |
3008 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
3009 | if (tmp->next == loc) | |
3010 | { | |
3011 | tmp->next = loc->next; | |
3012 | break; | |
3013 | } | |
3014 | } | |
3015 | } | |
3016 | ||
3017 | /* Now update the global location list to permanently delete the | |
3018 | removed locations above. */ | |
44702360 | 3019 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
3020 | } |
3021 | ||
74960c60 VP |
3022 | /* Make sure all breakpoints are inserted in inferior. |
3023 | Throws exception on any error. | |
3024 | A breakpoint that is already inserted won't be inserted | |
3025 | again, so calling this function twice is safe. */ | |
3026 | void | |
3027 | insert_breakpoints (void) | |
3028 | { | |
43892fdf | 3029 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 3030 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
3031 | { |
3032 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3033 | ||
3034 | update_watchpoint (w, 0 /* don't reparse. */); | |
3035 | } | |
74960c60 | 3036 | |
04086b45 PA |
3037 | /* Updating watchpoints creates new locations, so update the global |
3038 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
3039 | ignore breakpoints_always_inserted_mode. Also, |
3040 | update_global_location_list tries to "upgrade" software | |
3041 | breakpoints to hardware breakpoints to handle "set breakpoint | |
3042 | auto-hw", so we need to call it even if we don't have new | |
3043 | locations. */ | |
04086b45 | 3044 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
3045 | } |
3046 | ||
b775012e LM |
3047 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3048 | target. It is the case with deleting and disabling of breakpoints when using | |
3049 | always-inserted mode. */ | |
3050 | ||
3051 | static void | |
3052 | update_inserted_breakpoint_locations (void) | |
3053 | { | |
b775012e LM |
3054 | int error_flag = 0; |
3055 | int val = 0; | |
3056 | int disabled_breaks = 0; | |
3057 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3058 | int hw_bp_details_reported = 0; |
b775012e | 3059 | |
d7e74731 | 3060 | string_file tmp_error_stream; |
b775012e LM |
3061 | |
3062 | /* Explicitly mark the warning -- this will only be printed if | |
3063 | there was an error. */ | |
d7e74731 | 3064 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 3065 | |
5ed8105e | 3066 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 3067 | |
48d7020b | 3068 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
3069 | { |
3070 | /* We only want to update software breakpoints and hardware | |
3071 | breakpoints. */ | |
3072 | if (!is_breakpoint (bl->owner)) | |
3073 | continue; | |
3074 | ||
3075 | /* We only want to update locations that are already inserted | |
3076 | and need updating. This is to avoid unwanted insertion during | |
3077 | deletion of breakpoints. */ | |
4daf1902 | 3078 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
3079 | continue; |
3080 | ||
3081 | switch_to_program_space_and_thread (bl->pspace); | |
3082 | ||
3083 | /* For targets that support global breakpoints, there's no need | |
3084 | to select an inferior to insert breakpoint to. In fact, even | |
3085 | if we aren't attached to any process yet, we should still | |
3086 | insert breakpoints. */ | |
f5656ead | 3087 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3088 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
3089 | continue; |
3090 | ||
d7e74731 | 3091 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3092 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3093 | if (val) |
3094 | error_flag = val; | |
3095 | } | |
3096 | ||
3097 | if (error_flag) | |
3098 | { | |
223ffa71 | 3099 | target_terminal::ours_for_output (); |
b775012e LM |
3100 | error_stream (tmp_error_stream); |
3101 | } | |
b775012e LM |
3102 | } |
3103 | ||
c30eee59 | 3104 | /* Used when starting or continuing the program. */ |
c906108c | 3105 | |
74960c60 VP |
3106 | static void |
3107 | insert_breakpoint_locations (void) | |
c906108c | 3108 | { |
eacd795a | 3109 | int error_flag = 0; |
c906108c | 3110 | int val = 0; |
3fbb6ffa | 3111 | int disabled_breaks = 0; |
81d0cc19 | 3112 | int hw_breakpoint_error = 0; |
dd61ec5c | 3113 | int hw_bp_error_explained_already = 0; |
c906108c | 3114 | |
d7e74731 PA |
3115 | string_file tmp_error_stream; |
3116 | ||
81d0cc19 GS |
3117 | /* Explicitly mark the warning -- this will only be printed if |
3118 | there was an error. */ | |
d7e74731 | 3119 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3120 | |
5ed8105e | 3121 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3122 | |
48d7020b | 3123 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3124 | { |
b775012e | 3125 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3126 | continue; |
3127 | ||
4a64f543 MS |
3128 | /* There is no point inserting thread-specific breakpoints if |
3129 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3130 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3131 | if (bl->owner->thread != -1 |
5d5658a1 | 3132 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3133 | continue; |
3134 | ||
35df4500 | 3135 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3136 | |
3137 | /* For targets that support global breakpoints, there's no need | |
3138 | to select an inferior to insert breakpoint to. In fact, even | |
3139 | if we aren't attached to any process yet, we should still | |
3140 | insert breakpoints. */ | |
f5656ead | 3141 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3142 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3143 | continue; |
3144 | ||
d7e74731 | 3145 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3146 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3147 | if (val) |
eacd795a | 3148 | error_flag = val; |
879bfdc2 | 3149 | } |
c906108c | 3150 | |
4a64f543 MS |
3151 | /* If we failed to insert all locations of a watchpoint, remove |
3152 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3153 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3154 | { |
3155 | int some_failed = 0; | |
a5606eee VP |
3156 | |
3157 | if (!is_hardware_watchpoint (bpt)) | |
3158 | continue; | |
3159 | ||
d6b74ac4 | 3160 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3161 | continue; |
74960c60 VP |
3162 | |
3163 | if (bpt->disposition == disp_del_at_next_stop) | |
3164 | continue; | |
a5606eee | 3165 | |
40cb8ca5 | 3166 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3167 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3168 | { |
3169 | some_failed = 1; | |
3170 | break; | |
3171 | } | |
40cb8ca5 | 3172 | |
a5606eee VP |
3173 | if (some_failed) |
3174 | { | |
40cb8ca5 | 3175 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3176 | if (loc->inserted) |
834c0d03 | 3177 | remove_breakpoint (loc); |
a5606eee VP |
3178 | |
3179 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3180 | tmp_error_stream.printf ("Could not insert " |
3181 | "hardware watchpoint %d.\n", | |
3182 | bpt->number); | |
eacd795a | 3183 | error_flag = -1; |
a5606eee VP |
3184 | } |
3185 | } | |
3186 | ||
eacd795a | 3187 | if (error_flag) |
81d0cc19 GS |
3188 | { |
3189 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3190 | message about possibly exhausted resources. */ |
dd61ec5c | 3191 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3192 | { |
d7e74731 | 3193 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3194 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3195 | } |
223ffa71 | 3196 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3197 | error_stream (tmp_error_stream); |
3198 | } | |
c906108c SS |
3199 | } |
3200 | ||
c30eee59 TJB |
3201 | /* Used when the program stops. |
3202 | Returns zero if successful, or non-zero if there was a problem | |
3203 | removing a breakpoint location. */ | |
3204 | ||
c906108c | 3205 | int |
fba45db2 | 3206 | remove_breakpoints (void) |
c906108c | 3207 | { |
3a1bae8e | 3208 | int val = 0; |
c906108c | 3209 | |
48d7020b | 3210 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3211 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3212 | val |= remove_breakpoint (bl); |
01add95b | 3213 | |
3a1bae8e | 3214 | return val; |
c906108c SS |
3215 | } |
3216 | ||
49fa26b0 PA |
3217 | /* When a thread exits, remove breakpoints that are related to |
3218 | that thread. */ | |
3219 | ||
3220 | static void | |
3221 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3222 | { | |
1428b37a | 3223 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3224 | { |
5d5658a1 | 3225 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3226 | { |
3227 | b->disposition = disp_del_at_next_stop; | |
3228 | ||
6cb06a8c | 3229 | gdb_printf (_("\ |
43792cf0 | 3230 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3231 | b->number, print_thread_id (tp)); |
49fa26b0 PA |
3232 | |
3233 | /* Hide it from the user. */ | |
3234 | b->number = 0; | |
3235 | } | |
3236 | } | |
3237 | } | |
3238 | ||
f3869b1a | 3239 | /* See breakpoint.h. */ |
6c95b8df | 3240 | |
f3869b1a | 3241 | void |
00431a78 | 3242 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3243 | { |
6c95b8df | 3244 | int val; |
6c95b8df | 3245 | |
48d7020b | 3246 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3247 | { |
3248 | if (bl->pspace != inf->pspace) | |
3249 | continue; | |
6c95b8df | 3250 | |
01add95b SM |
3251 | if (bl->inserted && !bl->target_info.persist) |
3252 | { | |
3253 | val = remove_breakpoint (bl); | |
3254 | if (val != 0) | |
3255 | return; | |
3256 | } | |
3257 | } | |
6c95b8df PA |
3258 | } |
3259 | ||
e58b0e63 PA |
3260 | static int internal_breakpoint_number = -1; |
3261 | ||
84f4c1fe PM |
3262 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3263 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3264 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3265 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3266 | breakpoint_count and that value incremented. Internal breakpoints |
3267 | do not set the internal var bpnum. */ | |
3268 | static void | |
3269 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3270 | { | |
3271 | if (internal) | |
3272 | b->number = internal_breakpoint_number--; | |
3273 | else | |
3274 | { | |
3275 | set_breakpoint_count (breakpoint_count + 1); | |
3276 | b->number = breakpoint_count; | |
3277 | } | |
3278 | } | |
3279 | ||
e62c965a | 3280 | static struct breakpoint * |
a6d9a66e | 3281 | create_internal_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 3282 | CORE_ADDR address, enum bptype type) |
e62c965a | 3283 | { |
752a2291 PA |
3284 | std::unique_ptr<internal_breakpoint> b |
3285 | (new internal_breakpoint (gdbarch, type, address)); | |
e62c965a | 3286 | |
e62c965a | 3287 | b->number = internal_breakpoint_number--; |
e62c965a | 3288 | |
752a2291 | 3289 | return add_to_breakpoint_chain (std::move (b)); |
e62c965a PP |
3290 | } |
3291 | ||
17450429 PP |
3292 | static const char *const longjmp_names[] = |
3293 | { | |
3294 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3295 | }; | |
3296 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3297 | ||
3298 | /* Per-objfile data private to breakpoint.c. */ | |
3299 | struct breakpoint_objfile_data | |
3300 | { | |
3301 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3302 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3303 | |
3304 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3305 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3306 | |
28106bc2 | 3307 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3308 | int longjmp_searched = 0; |
28106bc2 | 3309 | |
45461e0d SM |
3310 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3311 | references. */ | |
3312 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3313 | |
17450429 | 3314 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3315 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3316 | |
3317 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3318 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3319 | |
3320 | /* True if we have looked for exception probes. */ | |
43dce439 | 3321 | int exception_searched = 0; |
28106bc2 | 3322 | |
45461e0d SM |
3323 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3324 | references. */ | |
3325 | std::vector<probe *> exception_probes; | |
17450429 PP |
3326 | }; |
3327 | ||
08b8a139 | 3328 | static const registry<objfile>::key<breakpoint_objfile_data> |
51d3063a | 3329 | breakpoint_objfile_key; |
17450429 PP |
3330 | |
3331 | /* Minimal symbol not found sentinel. */ | |
3332 | static struct minimal_symbol msym_not_found; | |
3333 | ||
3334 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3335 | ||
3336 | static int | |
3337 | msym_not_found_p (const struct minimal_symbol *msym) | |
3338 | { | |
3339 | return msym == &msym_not_found; | |
3340 | } | |
3341 | ||
3342 | /* Return per-objfile data needed by breakpoint.c. | |
3343 | Allocate the data if necessary. */ | |
3344 | ||
3345 | static struct breakpoint_objfile_data * | |
3346 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3347 | { | |
3348 | struct breakpoint_objfile_data *bp_objfile_data; | |
3349 | ||
51d3063a | 3350 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3351 | if (bp_objfile_data == NULL) |
51d3063a | 3352 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3353 | return bp_objfile_data; |
3354 | } | |
3355 | ||
e62c965a | 3356 | static void |
af02033e | 3357 | create_overlay_event_breakpoint (void) |
e62c965a | 3358 | { |
af02033e | 3359 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3360 | |
2030c079 | 3361 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3362 | { |
3363 | struct breakpoint *b; | |
17450429 PP |
3364 | struct breakpoint_objfile_data *bp_objfile_data; |
3365 | CORE_ADDR addr; | |
69de3c6a | 3366 | |
17450429 PP |
3367 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3368 | ||
3b7344d5 | 3369 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3370 | continue; |
3371 | ||
3b7344d5 | 3372 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3373 | { |
3b7344d5 | 3374 | struct bound_minimal_symbol m; |
17450429 PP |
3375 | |
3376 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3377 | if (m.minsym == NULL) |
17450429 PP |
3378 | { |
3379 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3380 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3381 | continue; |
3382 | } | |
3383 | bp_objfile_data->overlay_msym = m; | |
3384 | } | |
e62c965a | 3385 | |
4aeddc50 | 3386 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3387 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3388 | bp_overlay_event); |
40d97ee2 | 3389 | b->locspec = new_explicit_location_spec_function (func_name); |
e62c965a | 3390 | |
69de3c6a | 3391 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3392 | { |
3393 | b->enable_state = bp_enabled; | |
3394 | overlay_events_enabled = 1; | |
3395 | } | |
69de3c6a PP |
3396 | else |
3397 | { | |
dda83cd7 SM |
3398 | b->enable_state = bp_disabled; |
3399 | overlay_events_enabled = 0; | |
69de3c6a | 3400 | } |
e62c965a | 3401 | } |
e62c965a PP |
3402 | } |
3403 | ||
2a7f6487 TV |
3404 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3405 | true if a breakpoint was installed. */ | |
3406 | ||
3407 | static bool | |
3408 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3409 | { |
2a7f6487 TV |
3410 | struct gdbarch *gdbarch = objfile->arch (); |
3411 | struct breakpoint_objfile_data *bp_objfile_data | |
3412 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3413 | |
2a7f6487 | 3414 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3415 | { |
2a7f6487 TV |
3416 | std::vector<probe *> ret |
3417 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3418 | |
2a7f6487 | 3419 | if (!ret.empty ()) |
94c93c35 | 3420 | { |
2a7f6487 TV |
3421 | /* We are only interested in checking one element. */ |
3422 | probe *p = ret[0]; | |
0fd8e87f | 3423 | |
2a7f6487 TV |
3424 | if (!p->can_evaluate_arguments ()) |
3425 | { | |
3426 | /* We cannot use the probe interface here, | |
3427 | because it does not know how to evaluate | |
3428 | arguments. */ | |
3429 | ret.clear (); | |
3430 | } | |
3431 | } | |
3432 | bp_objfile_data->longjmp_probes = ret; | |
3433 | bp_objfile_data->longjmp_searched = 1; | |
3434 | } | |
0fd8e87f | 3435 | |
2a7f6487 TV |
3436 | if (bp_objfile_data->longjmp_probes.empty ()) |
3437 | return false; | |
17450429 | 3438 | |
2a7f6487 TV |
3439 | for (probe *p : bp_objfile_data->longjmp_probes) |
3440 | { | |
3441 | struct breakpoint *b; | |
25f9533e | 3442 | |
2a7f6487 TV |
3443 | b = create_internal_breakpoint (gdbarch, |
3444 | p->get_relocated_address (objfile), | |
9efa3c7f | 3445 | bp_longjmp_master); |
264f9890 | 3446 | b->locspec = new_probe_location_spec ("-probe-stap libc:longjmp"); |
2a7f6487 TV |
3447 | b->enable_state = bp_disabled; |
3448 | } | |
aed57c53 | 3449 | |
2a7f6487 TV |
3450 | return true; |
3451 | } | |
25f9533e | 3452 | |
2a7f6487 TV |
3453 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3454 | Return true if at least one breakpoint was installed. */ | |
3455 | ||
3456 | static bool | |
3457 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3458 | { | |
3459 | struct gdbarch *gdbarch = objfile->arch (); | |
3460 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3461 | return false; | |
3462 | ||
3463 | struct breakpoint_objfile_data *bp_objfile_data | |
3464 | = get_breakpoint_objfile_data (objfile); | |
3465 | unsigned int installed_bp = 0; | |
3466 | ||
3467 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3468 | { | |
3469 | struct breakpoint *b; | |
3470 | const char *func_name; | |
3471 | CORE_ADDR addr; | |
2a7f6487 TV |
3472 | |
3473 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3474 | continue; | |
28106bc2 | 3475 | |
2a7f6487 TV |
3476 | func_name = longjmp_names[i]; |
3477 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3478 | { | |
3479 | struct bound_minimal_symbol m; | |
3480 | ||
3481 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3482 | if (m.minsym == NULL) | |
3483 | { | |
3484 | /* Prevent future lookups in this objfile. */ | |
3485 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3486 | continue; |
3487 | } | |
2a7f6487 TV |
3488 | bp_objfile_data->longjmp_msym[i] = m; |
3489 | } | |
28106bc2 | 3490 | |
4aeddc50 | 3491 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
9efa3c7f | 3492 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); |
40d97ee2 | 3493 | b->locspec = new_explicit_location_spec_function (func_name); |
2a7f6487 TV |
3494 | b->enable_state = bp_disabled; |
3495 | installed_bp++; | |
3496 | } | |
28106bc2 | 3497 | |
2a7f6487 TV |
3498 | return installed_bp > 0; |
3499 | } | |
0fd8e87f | 3500 | |
2a7f6487 | 3501 | /* Create a master longjmp breakpoint. */ |
17450429 | 3502 | |
2a7f6487 TV |
3503 | static void |
3504 | create_longjmp_master_breakpoint (void) | |
3505 | { | |
3506 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3507 | |
2a7f6487 TV |
3508 | for (struct program_space *pspace : program_spaces) |
3509 | { | |
3510 | set_current_program_space (pspace); | |
17450429 | 3511 | |
2a7f6487 TV |
3512 | for (objfile *obj : current_program_space->objfiles ()) |
3513 | { | |
3514 | /* Skip separate debug object, it's handled in the loop below. */ | |
3515 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3516 | continue; | |
3517 | ||
3518 | /* Try a probe kind breakpoint on main objfile. */ | |
3519 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3520 | continue; | |
3521 | ||
3522 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3523 | objfiles. */ | |
3524 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3525 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3526 | break; | |
94c93c35 TT |
3527 | } |
3528 | } | |
0fd8e87f UW |
3529 | } |
3530 | ||
af02033e | 3531 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3532 | static void |
af02033e | 3533 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3534 | { |
af02033e | 3535 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3536 | |
5ed8105e | 3537 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3538 | |
94c93c35 TT |
3539 | for (struct program_space *pspace : program_spaces) |
3540 | { | |
3541 | CORE_ADDR addr; | |
17450429 | 3542 | |
94c93c35 | 3543 | set_current_program_space (pspace); |
17450429 | 3544 | |
94c93c35 TT |
3545 | for (objfile *objfile : current_program_space->objfiles ()) |
3546 | { | |
3547 | struct breakpoint *b; | |
3548 | struct breakpoint_objfile_data *bp_objfile_data; | |
aa7d318d | 3549 | |
94c93c35 | 3550 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3551 | |
94c93c35 TT |
3552 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3553 | continue; | |
17450429 | 3554 | |
94c93c35 TT |
3555 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3556 | { | |
3557 | struct bound_minimal_symbol m; | |
17450429 | 3558 | |
94c93c35 | 3559 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3560 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3561 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3562 | { |
3563 | /* Prevent future lookups in this objfile. */ | |
3564 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3565 | continue; | |
3566 | } | |
3567 | bp_objfile_data->terminate_msym = m; | |
3568 | } | |
aa7d318d | 3569 | |
4aeddc50 | 3570 | addr = bp_objfile_data->terminate_msym.value_address (); |
94c93c35 | 3571 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3572 | bp_std_terminate_master); |
40d97ee2 | 3573 | b->locspec = new_explicit_location_spec_function (func_name); |
94c93c35 TT |
3574 | b->enable_state = bp_disabled; |
3575 | } | |
3576 | } | |
aa7d318d TT |
3577 | } |
3578 | ||
1940319c TV |
3579 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3580 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3581 | |
1940319c TV |
3582 | static bool |
3583 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3584 | { |
1940319c TV |
3585 | struct breakpoint *b; |
3586 | struct gdbarch *gdbarch; | |
3587 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3588 | |
1940319c | 3589 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3590 | |
1940319c TV |
3591 | /* We prefer the SystemTap probe point if it exists. */ |
3592 | if (!bp_objfile_data->exception_searched) | |
3593 | { | |
3594 | std::vector<probe *> ret | |
3595 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3596 | |
1940319c | 3597 | if (!ret.empty ()) |
28106bc2 | 3598 | { |
1940319c TV |
3599 | /* We are only interested in checking one element. */ |
3600 | probe *p = ret[0]; | |
25f9533e | 3601 | |
1940319c | 3602 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3603 | { |
1940319c TV |
3604 | /* We cannot use the probe interface here, because it does |
3605 | not know how to evaluate arguments. */ | |
3606 | ret.clear (); | |
25f9533e | 3607 | } |
28106bc2 | 3608 | } |
1940319c TV |
3609 | bp_objfile_data->exception_probes = ret; |
3610 | bp_objfile_data->exception_searched = 1; | |
3611 | } | |
28106bc2 | 3612 | |
1940319c TV |
3613 | if (bp_objfile_data->exception_probes.empty ()) |
3614 | return false; | |
45461e0d | 3615 | |
1940319c | 3616 | gdbarch = objfile->arch (); |
28106bc2 | 3617 | |
1940319c TV |
3618 | for (probe *p : bp_objfile_data->exception_probes) |
3619 | { | |
3620 | b = create_internal_breakpoint (gdbarch, | |
3621 | p->get_relocated_address (objfile), | |
9efa3c7f | 3622 | bp_exception_master); |
264f9890 | 3623 | b->locspec = new_probe_location_spec ("-probe-stap libgcc:unwind"); |
1940319c TV |
3624 | b->enable_state = bp_disabled; |
3625 | } | |
28106bc2 | 3626 | |
1940319c TV |
3627 | return true; |
3628 | } | |
28106bc2 | 3629 | |
1940319c TV |
3630 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3631 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3632 | |
1940319c TV |
3633 | static bool |
3634 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3635 | { | |
3636 | const char *const func_name = "_Unwind_DebugHook"; | |
3637 | struct breakpoint *b; | |
3638 | struct gdbarch *gdbarch; | |
3639 | struct breakpoint_objfile_data *bp_objfile_data; | |
3640 | CORE_ADDR addr; | |
186c406b | 3641 | |
1940319c | 3642 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3643 | |
1940319c TV |
3644 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3645 | return false; | |
17450429 | 3646 | |
1940319c TV |
3647 | gdbarch = objfile->arch (); |
3648 | ||
3649 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3650 | { | |
3651 | struct bound_minimal_symbol debug_hook; | |
3652 | ||
3653 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3654 | if (debug_hook.minsym == NULL) | |
3655 | { | |
3656 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3657 | return false; | |
186c406b | 3658 | } |
17450429 | 3659 | |
1940319c TV |
3660 | bp_objfile_data->exception_msym = debug_hook; |
3661 | } | |
3662 | ||
4aeddc50 | 3663 | addr = bp_objfile_data->exception_msym.value_address (); |
328d42d8 SM |
3664 | addr = gdbarch_convert_from_func_ptr_addr |
3665 | (gdbarch, addr, current_inferior ()->top_target ()); | |
9efa3c7f | 3666 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); |
40d97ee2 | 3667 | b->locspec = new_explicit_location_spec_function (func_name); |
1940319c TV |
3668 | b->enable_state = bp_disabled; |
3669 | ||
3670 | return true; | |
3671 | } | |
3672 | ||
3673 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3674 | ||
3675 | static void | |
3676 | create_exception_master_breakpoint (void) | |
3677 | { | |
3678 | for (objfile *obj : current_program_space->objfiles ()) | |
3679 | { | |
3680 | /* Skip separate debug object. */ | |
3681 | if (obj->separate_debug_objfile_backlink) | |
3682 | continue; | |
3683 | ||
3684 | /* Try a probe kind breakpoint. */ | |
3685 | if (create_exception_master_breakpoint_probe (obj)) | |
3686 | continue; | |
3687 | ||
7c6944ab TV |
3688 | /* Iterate over main and separate debug objects and try an |
3689 | _Unwind_DebugHook kind breakpoint. */ | |
3690 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3691 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3692 | break; |
186c406b | 3693 | } |
186c406b TT |
3694 | } |
3695 | ||
9ef9e6a6 KS |
3696 | /* Does B have a location spec? */ |
3697 | ||
3698 | static int | |
264f9890 | 3699 | breakpoint_location_spec_empty_p (const struct breakpoint *b) |
9ef9e6a6 | 3700 | { |
238dc9af | 3701 | return (b->locspec != nullptr && b->locspec->empty_p ()); |
9ef9e6a6 KS |
3702 | } |
3703 | ||
c906108c | 3704 | void |
fba45db2 | 3705 | update_breakpoints_after_exec (void) |
c906108c | 3706 | { |
25b22b0a PA |
3707 | /* We're about to delete breakpoints from GDB's lists. If the |
3708 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3709 | writing the breakpoints' "shadow contents" back into memory. The | |
3710 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3711 | do that. Instead, the target is responsible from marking | |
3712 | breakpoints out as soon as it detects an exec. We don't do that | |
3713 | here instead, because there may be other attempts to delete | |
3714 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3715 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3716 | if (bploc->pspace == current_program_space) |
3717 | gdb_assert (!bploc->inserted); | |
c906108c | 3718 | |
1428b37a | 3719 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3720 | { |
3721 | if (b->pspace != current_program_space) | |
c5aa993b | 3722 | continue; |
c906108c | 3723 | |
01add95b SM |
3724 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3725 | if (b->type == bp_shlib_event) | |
3726 | { | |
3727 | delete_breakpoint (b); | |
3728 | continue; | |
3729 | } | |
4efc6507 | 3730 | |
01add95b SM |
3731 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3732 | if (b->type == bp_jit_event) | |
3733 | { | |
3734 | delete_breakpoint (b); | |
3735 | continue; | |
3736 | } | |
c4093a6a | 3737 | |
01add95b SM |
3738 | /* Thread event breakpoints must be set anew after an exec(), |
3739 | as must overlay event and longjmp master breakpoints. */ | |
3740 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3741 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3742 | || b->type == bp_exception_master) | |
3743 | { | |
3744 | delete_breakpoint (b); | |
3745 | continue; | |
3746 | } | |
c5aa993b | 3747 | |
01add95b SM |
3748 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3749 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3750 | { | |
3751 | delete_breakpoint (b); | |
3752 | continue; | |
3753 | } | |
7c16b83e | 3754 | |
01add95b SM |
3755 | /* Just like single-step breakpoints. */ |
3756 | if (b->type == bp_single_step) | |
3757 | { | |
3758 | delete_breakpoint (b); | |
3759 | continue; | |
3760 | } | |
611c83ae | 3761 | |
01add95b SM |
3762 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3763 | after an exec. */ | |
3764 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3765 | || b->type == bp_longjmp_call_dummy | |
3766 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3767 | { | |
3768 | delete_breakpoint (b); | |
3769 | continue; | |
3770 | } | |
ce78b96d | 3771 | |
01add95b SM |
3772 | if (b->type == bp_catchpoint) |
3773 | { | |
3774 | /* For now, none of the bp_catchpoint breakpoints need to | |
3775 | do anything at this point. In the future, if some of | |
3776 | the catchpoints need to something, we will need to add | |
3777 | a new method, and call this method from here. */ | |
3778 | continue; | |
3779 | } | |
c5aa993b | 3780 | |
01add95b SM |
3781 | /* bp_finish is a special case. The only way we ought to be able |
3782 | to see one of these when an exec() has happened, is if the user | |
3783 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3784 | carries them to the call-site of the current callee, by setting | |
3785 | a temporary bp there and resuming. But in this case, the finish | |
3786 | will carry them entirely through the vfork & exec. | |
3787 | ||
3788 | We don't want to allow a bp_finish to remain inserted now. But | |
3789 | we can't safely delete it, 'cause finish_command has a handle to | |
3790 | the bp on a bpstat, and will later want to delete it. There's a | |
3791 | chance (and I've seen it happen) that if we delete the bp_finish | |
3792 | here, that its storage will get reused by the time finish_command | |
3793 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3794 | We really must allow finish_command to delete a bp_finish. | |
3795 | ||
3796 | In the absence of a general solution for the "how do we know | |
3797 | it's safe to delete something others may have handles to?" | |
3798 | problem, what we'll do here is just uninsert the bp_finish, and | |
3799 | let finish_command delete it. | |
3800 | ||
3801 | (We know the bp_finish is "doomed" in the sense that it's | |
3802 | momentary, and will be deleted as soon as finish_command sees | |
3803 | the inferior stopped. So it doesn't matter that the bp's | |
3804 | address is probably bogus in the new a.out, unlike e.g., the | |
3805 | solib breakpoints.) */ | |
3806 | ||
3807 | if (b->type == bp_finish) | |
3808 | { | |
3809 | continue; | |
3810 | } | |
3811 | ||
3812 | /* Without a symbolic address, we have little hope of the | |
3813 | pre-exec() address meaning the same thing in the post-exec() | |
3814 | a.out. */ | |
264f9890 | 3815 | if (breakpoint_location_spec_empty_p (b)) |
01add95b SM |
3816 | { |
3817 | delete_breakpoint (b); | |
3818 | continue; | |
3819 | } | |
3820 | } | |
c906108c SS |
3821 | } |
3822 | ||
3823 | int | |
d80ee84f | 3824 | detach_breakpoints (ptid_t ptid) |
c906108c | 3825 | { |
3a1bae8e | 3826 | int val = 0; |
2989a365 | 3827 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3828 | struct inferior *inf = current_inferior (); |
c5aa993b | 3829 | |
e99b03dc | 3830 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3831 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3832 | |
6c95b8df | 3833 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3834 | inferior_ptid = ptid; |
48d7020b | 3835 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3836 | { |
3837 | if (bl->pspace != inf->pspace) | |
3838 | continue; | |
3839 | ||
3840 | /* This function must physically remove breakpoints locations | |
3841 | from the specified ptid, without modifying the breakpoint | |
6e14e441 PA |
3842 | package's state. Locations of type bp_loc_other and |
3843 | bp_loc_software_watchpoint are only maintained at GDB side, | |
3844 | so there is no need to remove them. Moreover, removing these | |
01add95b | 3845 | would modify the breakpoint package's state. */ |
6e14e441 PA |
3846 | if (bl->loc_type == bp_loc_other |
3847 | || bl->loc_type == bp_loc_software_watchpoint) | |
01add95b SM |
3848 | continue; |
3849 | ||
3850 | if (bl->inserted) | |
3851 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3852 | } | |
d03285ec | 3853 | |
3a1bae8e | 3854 | return val; |
c906108c SS |
3855 | } |
3856 | ||
35df4500 | 3857 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3858 | Note that this is used to detach breakpoints from a child fork. |
3859 | When we get here, the child isn't in the inferior list, and neither | |
3860 | do we have objects to represent its address space --- we should | |
35df4500 | 3861 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3862 | |
c906108c | 3863 | static int |
b2b6a7da | 3864 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3865 | { |
3866 | int val; | |
c5aa993b | 3867 | |
35df4500 TJB |
3868 | /* BL is never in moribund_locations by our callers. */ |
3869 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3870 | |
74960c60 VP |
3871 | /* The type of none suggests that owner is actually deleted. |
3872 | This should not ever happen. */ | |
35df4500 | 3873 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3874 | |
35df4500 TJB |
3875 | if (bl->loc_type == bp_loc_software_breakpoint |
3876 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3877 | { |
c02f5703 MS |
3878 | /* "Normal" instruction breakpoint: either the standard |
3879 | trap-instruction bp (bp_breakpoint), or a | |
3880 | bp_hardware_breakpoint. */ | |
3881 | ||
3882 | /* First check to see if we have to handle an overlay. */ | |
3883 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3884 | || bl->section == NULL |
3885 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3886 | { |
3887 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3888 | |
3889 | /* If we're trying to uninsert a memory breakpoint that we | |
3890 | know is set in a dynamic object that is marked | |
3891 | shlib_disabled, then either the dynamic object was | |
3892 | removed with "remove-symbol-file" or with | |
3893 | "nosharedlibrary". In the former case, we don't know | |
3894 | whether another dynamic object might have loaded over the | |
3895 | breakpoint's address -- the user might well let us know | |
3896 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3897 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3898 | list of dynamically loaded objects). If we have the |
3899 | breakpoint's shadow memory, that is, this is a software | |
3900 | breakpoint managed by GDB, check whether the breakpoint | |
3901 | is still inserted in memory, to avoid overwriting wrong | |
3902 | code with stale saved shadow contents. Note that HW | |
3903 | breakpoints don't have shadow memory, as they're | |
3904 | implemented using a mechanism that is not dependent on | |
3905 | being able to modify the target's memory, and as such | |
3906 | they should always be removed. */ | |
3907 | if (bl->shlib_disabled | |
3908 | && bl->target_info.shadow_len != 0 | |
3909 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3910 | val = 0; | |
3911 | else | |
c47614fe | 3912 | val = bl->owner->remove_location (bl, reason); |
c02f5703 | 3913 | } |
c906108c SS |
3914 | else |
3915 | { | |
4a64f543 | 3916 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3917 | Did we set a breakpoint at the LMA? */ |
3918 | if (!overlay_events_enabled) | |
3919 | { | |
3920 | /* Yes -- overlay event support is not active, so we | |
3921 | should have set a breakpoint at the LMA. Remove it. | |
3922 | */ | |
c02f5703 MS |
3923 | /* Ignore any failures: if the LMA is in ROM, we will |
3924 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3925 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3926 | target_remove_hw_breakpoint (bl->gdbarch, | |
3927 | &bl->overlay_target_info); | |
c02f5703 | 3928 | else |
35df4500 | 3929 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3930 | &bl->overlay_target_info, |
3931 | reason); | |
c02f5703 MS |
3932 | } |
3933 | /* Did we set a breakpoint at the VMA? | |
3934 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3935 | if (bl->inserted) |
c906108c | 3936 | { |
c02f5703 MS |
3937 | /* Yes -- remove it. Previously we did not bother to |
3938 | remove the breakpoint if the section had been | |
3939 | unmapped, but let's not rely on that being safe. We | |
3940 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3941 | |
3942 | /* However, we should remove *software* breakpoints only | |
3943 | if the section is still mapped, or else we overwrite | |
3944 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3945 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3946 | || section_is_mapped (bl->section)) | |
c47614fe | 3947 | val = bl->owner->remove_location (bl, reason); |
aa67235e UW |
3948 | else |
3949 | val = 0; | |
c906108c | 3950 | } |
c02f5703 MS |
3951 | else |
3952 | { | |
3953 | /* No -- not inserted, so no need to remove. No error. */ | |
3954 | val = 0; | |
3955 | } | |
c906108c | 3956 | } |
879d1e6b | 3957 | |
08351840 PA |
3958 | /* In some cases, we might not be able to remove a breakpoint in |
3959 | a shared library that has already been removed, but we have | |
3960 | not yet processed the shlib unload event. Similarly for an | |
3961 | unloaded add-symbol-file object - the user might not yet have | |
3962 | had the chance to remove-symbol-file it. shlib_disabled will | |
3963 | be set if the library/object has already been removed, but | |
3964 | the breakpoint hasn't been uninserted yet, e.g., after | |
3965 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3966 | always-inserted mode. */ | |
076855f9 | 3967 | if (val |
08351840 PA |
3968 | && (bl->loc_type == bp_loc_software_breakpoint |
3969 | && (bl->shlib_disabled | |
3970 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3971 | || shared_objfile_contains_address_p (bl->pspace, |
3972 | bl->address)))) | |
879d1e6b UW |
3973 | val = 0; |
3974 | ||
c906108c SS |
3975 | if (val) |
3976 | return val; | |
b2b6a7da | 3977 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3978 | } |
35df4500 | 3979 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3980 | { |
b2b6a7da | 3981 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c47614fe | 3982 | bl->owner->remove_location (bl, reason); |
2e70b7b9 | 3983 | |
c906108c | 3984 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3985 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3986 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3987 | bl->owner->number); |
c906108c | 3988 | } |
35df4500 | 3989 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3990 | && breakpoint_enabled (bl->owner) |
3991 | && !bl->duplicate) | |
ce78b96d | 3992 | { |
c47614fe | 3993 | val = bl->owner->remove_location (bl, reason); |
ce78b96d JB |
3994 | if (val) |
3995 | return val; | |
77b06cd7 | 3996 | |
b2b6a7da | 3997 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3998 | } |
c906108c SS |
3999 | |
4000 | return 0; | |
4001 | } | |
4002 | ||
6c95b8df | 4003 | static int |
834c0d03 | 4004 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 4005 | { |
35df4500 TJB |
4006 | /* BL is never in moribund_locations by our callers. */ |
4007 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4008 | |
6c95b8df PA |
4009 | /* The type of none suggests that owner is actually deleted. |
4010 | This should not ever happen. */ | |
35df4500 | 4011 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 4012 | |
5ed8105e | 4013 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 4014 | |
35df4500 | 4015 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4016 | |
5ed8105e | 4017 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4018 | } |
4019 | ||
c906108c SS |
4020 | /* Clear the "inserted" flag in all breakpoints. */ |
4021 | ||
25b22b0a | 4022 | void |
fba45db2 | 4023 | mark_breakpoints_out (void) |
c906108c | 4024 | { |
48d7020b | 4025 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 4026 | if (bl->pspace == current_program_space) |
35df4500 | 4027 | bl->inserted = 0; |
c906108c SS |
4028 | } |
4029 | ||
53a5351d JM |
4030 | /* Clear the "inserted" flag in all breakpoints and delete any |
4031 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4032 | |
4033 | Plus other such housekeeping that has to be done for breakpoints | |
4034 | between runs. | |
4035 | ||
53a5351d JM |
4036 | Note: this function gets called at the end of a run (by |
4037 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4038 | init_wait_for_inferior). */ |
c906108c SS |
4039 | |
4040 | ||
4041 | ||
4042 | void | |
fba45db2 | 4043 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4044 | { |
6c95b8df | 4045 | struct program_space *pspace = current_program_space; |
c906108c | 4046 | |
50c71eaf PA |
4047 | /* If breakpoint locations are shared across processes, then there's |
4048 | nothing to do. */ | |
f5656ead | 4049 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4050 | return; |
4051 | ||
1a853c52 | 4052 | mark_breakpoints_out (); |
075f6582 | 4053 | |
1428b37a | 4054 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
4055 | { |
4056 | if (b->loc && b->loc->pspace != pspace) | |
4057 | continue; | |
6c95b8df | 4058 | |
01add95b SM |
4059 | switch (b->type) |
4060 | { | |
4061 | case bp_call_dummy: | |
4062 | case bp_longjmp_call_dummy: | |
c906108c | 4063 | |
01add95b SM |
4064 | /* If the call dummy breakpoint is at the entry point it will |
4065 | cause problems when the inferior is rerun, so we better get | |
4066 | rid of it. */ | |
ab92d69b | 4067 | |
01add95b | 4068 | case bp_watchpoint_scope: |
ab92d69b | 4069 | |
01add95b | 4070 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 4071 | |
01add95b | 4072 | case bp_shlib_event: |
ab92d69b | 4073 | |
01add95b SM |
4074 | /* Also remove solib event breakpoints. Their addresses may |
4075 | have changed since the last time we ran the program. | |
4076 | Actually we may now be debugging against different target; | |
4077 | and so the solib backend that installed this breakpoint may | |
4078 | not be used in by the target. E.g., | |
ab92d69b | 4079 | |
01add95b SM |
4080 | (gdb) file prog-linux |
4081 | (gdb) run # native linux target | |
4082 | ... | |
4083 | (gdb) kill | |
4084 | (gdb) file prog-win.exe | |
4085 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4086 | */ | |
c906108c | 4087 | |
01add95b | 4088 | case bp_step_resume: |
f59f708a | 4089 | |
01add95b | 4090 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4091 | |
01add95b | 4092 | case bp_single_step: |
7c16b83e | 4093 | |
01add95b | 4094 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4095 | |
01add95b SM |
4096 | delete_breakpoint (b); |
4097 | break; | |
c906108c | 4098 | |
01add95b SM |
4099 | case bp_watchpoint: |
4100 | case bp_hardware_watchpoint: | |
4101 | case bp_read_watchpoint: | |
4102 | case bp_access_watchpoint: | |
4103 | { | |
4104 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4105 | |
01add95b SM |
4106 | /* Likewise for watchpoints on local expressions. */ |
4107 | if (w->exp_valid_block != NULL) | |
4108 | delete_breakpoint (b); | |
4109 | else | |
4110 | { | |
4111 | /* Get rid of existing locations, which are no longer | |
4112 | valid. New ones will be created in | |
4113 | update_watchpoint, when the inferior is restarted. | |
4114 | The next update_global_location_list call will | |
4115 | garbage collect them. */ | |
4116 | b->loc = NULL; | |
4117 | ||
4118 | if (context == inf_starting) | |
4119 | { | |
4120 | /* Reset val field to force reread of starting value in | |
4121 | insert_breakpoints. */ | |
4122 | w->val.reset (nullptr); | |
4123 | w->val_valid = false; | |
4124 | } | |
4125 | } | |
4126 | } | |
4127 | break; | |
4128 | default: | |
4129 | break; | |
3a5c3e22 | 4130 | } |
01add95b | 4131 | } |
1c5cfe86 PA |
4132 | |
4133 | /* Get rid of the moribund locations. */ | |
1123588c | 4134 | for (bp_location *bl : moribund_locations) |
35df4500 | 4135 | decref_bp_location (&bl); |
1123588c | 4136 | moribund_locations.clear (); |
c906108c SS |
4137 | } |
4138 | ||
6c95b8df PA |
4139 | /* These functions concern about actual breakpoints inserted in the |
4140 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4141 | we need to hop over the bkpt --- so we check for address space | |
4142 | match, not program space. */ | |
4143 | ||
c2c6d25f JM |
4144 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4145 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4146 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4147 | permanent breakpoint. | |
4148 | - When continuing from a location with an ordinary breakpoint, we | |
4149 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4150 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4151 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4152 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4153 | |
c2c6d25f | 4154 | enum breakpoint_here |
accd0bcd | 4155 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4156 | { |
c2c6d25f | 4157 | int any_breakpoint_here = 0; |
c906108c | 4158 | |
48d7020b | 4159 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4160 | { |
35df4500 TJB |
4161 | if (bl->loc_type != bp_loc_software_breakpoint |
4162 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4163 | continue; |
4164 | ||
f1310107 | 4165 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4166 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4167 | || bl->permanent) |
f1310107 | 4168 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4169 | { |
4170 | if (overlay_debugging | |
35df4500 TJB |
4171 | && section_is_overlay (bl->section) |
4172 | && !section_is_mapped (bl->section)) | |
075f6582 | 4173 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4174 | else if (bl->permanent) |
075f6582 DJ |
4175 | return permanent_breakpoint_here; |
4176 | else | |
4177 | any_breakpoint_here = 1; | |
4178 | } | |
4179 | } | |
c906108c | 4180 | |
f486487f | 4181 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4182 | } |
4183 | ||
d35ae833 PA |
4184 | /* See breakpoint.h. */ |
4185 | ||
4186 | int | |
accd0bcd | 4187 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4188 | CORE_ADDR addr, ULONGEST len) |
4189 | { | |
48d7020b | 4190 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4191 | { |
4192 | if (bl->loc_type != bp_loc_software_breakpoint | |
4193 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4194 | continue; | |
4195 | ||
4196 | if ((breakpoint_enabled (bl->owner) | |
4197 | || bl->permanent) | |
4198 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4199 | addr, len)) | |
4200 | { | |
4201 | if (overlay_debugging | |
4202 | && section_is_overlay (bl->section) | |
4203 | && !section_is_mapped (bl->section)) | |
4204 | { | |
4205 | /* Unmapped overlay -- can't be a match. */ | |
4206 | continue; | |
4207 | } | |
4208 | ||
4209 | return 1; | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | return 0; | |
4214 | } | |
4215 | ||
1c5cfe86 PA |
4216 | /* Return true if there's a moribund breakpoint at PC. */ |
4217 | ||
4218 | int | |
accd0bcd | 4219 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4220 | { |
1123588c | 4221 | for (bp_location *loc : moribund_locations) |
f1310107 | 4222 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4223 | return 1; |
4224 | ||
4225 | return 0; | |
4226 | } | |
c2c6d25f | 4227 | |
f7ce857f PA |
4228 | /* Returns non-zero iff BL is inserted at PC, in address space |
4229 | ASPACE. */ | |
4230 | ||
4231 | static int | |
4232 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4233 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4234 | { |
4235 | if (bl->inserted | |
4236 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4237 | aspace, pc)) | |
4238 | { | |
4239 | if (overlay_debugging | |
4240 | && section_is_overlay (bl->section) | |
4241 | && !section_is_mapped (bl->section)) | |
4242 | return 0; /* unmapped overlay -- can't be a match */ | |
4243 | else | |
4244 | return 1; | |
4245 | } | |
4246 | return 0; | |
4247 | } | |
4248 | ||
a1fd2fa5 | 4249 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4250 | |
4251 | int | |
accd0bcd | 4252 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4253 | { |
e0d9a270 | 4254 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4255 | { |
35df4500 TJB |
4256 | if (bl->loc_type != bp_loc_software_breakpoint |
4257 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4258 | continue; |
4259 | ||
f7ce857f PA |
4260 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4261 | return 1; | |
c5aa993b | 4262 | } |
c36b740a VP |
4263 | return 0; |
4264 | } | |
4265 | ||
a1fd2fa5 PA |
4266 | /* This function returns non-zero iff there is a software breakpoint |
4267 | inserted at PC. */ | |
c36b740a VP |
4268 | |
4269 | int | |
accd0bcd | 4270 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4271 | CORE_ADDR pc) |
4fa8626c | 4272 | { |
e0d9a270 | 4273 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4274 | { |
35df4500 | 4275 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4276 | continue; |
4277 | ||
f7ce857f PA |
4278 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4279 | return 1; | |
4fa8626c DJ |
4280 | } |
4281 | ||
4282 | return 0; | |
9c02b525 PA |
4283 | } |
4284 | ||
4285 | /* See breakpoint.h. */ | |
4286 | ||
4287 | int | |
accd0bcd | 4288 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4289 | CORE_ADDR pc) |
4290 | { | |
e0d9a270 | 4291 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4292 | { |
9c02b525 PA |
4293 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4294 | continue; | |
4295 | ||
4296 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4297 | return 1; | |
4298 | } | |
4299 | ||
4300 | return 0; | |
4fa8626c DJ |
4301 | } |
4302 | ||
9093389c | 4303 | int |
accd0bcd | 4304 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4305 | CORE_ADDR addr, ULONGEST len) |
4306 | { | |
43892fdf | 4307 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4308 | { |
9093389c PA |
4309 | if (bpt->type != bp_hardware_watchpoint |
4310 | && bpt->type != bp_access_watchpoint) | |
4311 | continue; | |
4312 | ||
4313 | if (!breakpoint_enabled (bpt)) | |
4314 | continue; | |
4315 | ||
40cb8ca5 | 4316 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4317 | if (loc->pspace->aspace == aspace && loc->inserted) |
4318 | { | |
4319 | CORE_ADDR l, h; | |
4320 | ||
4321 | /* Check for intersection. */ | |
768adc05 PA |
4322 | l = std::max<CORE_ADDR> (loc->address, addr); |
4323 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4324 | if (l < h) |
4325 | return 1; | |
4326 | } | |
4327 | } | |
4328 | return 0; | |
4329 | } | |
c5aa993b | 4330 | |
f2478a7e | 4331 | /* See breakpoint.h. */ |
c906108c | 4332 | |
f2478a7e SM |
4333 | bool |
4334 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4335 | { |
f2478a7e | 4336 | return (b->type == bp_catchpoint); |
c906108c SS |
4337 | } |
4338 | ||
c906108c SS |
4339 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4340 | Also free any storage that is part of a bpstat. */ | |
4341 | ||
4342 | void | |
313f3b21 | 4343 | bpstat_clear (bpstat **bsp) |
c906108c | 4344 | { |
313f3b21 SM |
4345 | bpstat *p; |
4346 | bpstat *q; | |
c906108c SS |
4347 | |
4348 | if (bsp == 0) | |
4349 | return; | |
4350 | p = *bsp; | |
4351 | while (p != NULL) | |
4352 | { | |
4353 | q = p->next; | |
04afa70c | 4354 | delete p; |
c906108c SS |
4355 | p = q; |
4356 | } | |
4357 | *bsp = NULL; | |
4358 | } | |
4359 | ||
313f3b21 | 4360 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4361 | : next (NULL), |
4362 | bp_location_at (other.bp_location_at), | |
4363 | breakpoint_at (other.breakpoint_at), | |
4364 | commands (other.commands), | |
04afa70c TT |
4365 | print (other.print), |
4366 | stop (other.stop), | |
4367 | print_it (other.print_it) | |
4368 | { | |
850645cf TT |
4369 | if (other.old_val != NULL) |
4370 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4371 | } |
4372 | ||
c906108c SS |
4373 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4374 | is part of the bpstat is copied as well. */ | |
4375 | ||
313f3b21 SM |
4376 | bpstat * |
4377 | bpstat_copy (bpstat *bs) | |
c906108c | 4378 | { |
313f3b21 SM |
4379 | bpstat *p = nullptr; |
4380 | bpstat *tmp; | |
4381 | bpstat *retval = nullptr; | |
c906108c SS |
4382 | |
4383 | if (bs == NULL) | |
4384 | return bs; | |
4385 | ||
4386 | for (; bs != NULL; bs = bs->next) | |
4387 | { | |
313f3b21 | 4388 | tmp = new bpstat (*bs); |
31cc81e9 | 4389 | |
c906108c SS |
4390 | if (p == NULL) |
4391 | /* This is the first thing in the chain. */ | |
4392 | retval = tmp; | |
4393 | else | |
4394 | p->next = tmp; | |
4395 | p = tmp; | |
4396 | } | |
4397 | p->next = NULL; | |
4398 | return retval; | |
4399 | } | |
4400 | ||
4a64f543 | 4401 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4402 | |
313f3b21 SM |
4403 | bpstat * |
4404 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4405 | { |
c5aa993b JM |
4406 | if (bsp == NULL) |
4407 | return NULL; | |
c906108c | 4408 | |
c5aa993b JM |
4409 | for (; bsp != NULL; bsp = bsp->next) |
4410 | { | |
f431efe5 | 4411 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4412 | return bsp; |
4413 | } | |
c906108c SS |
4414 | return NULL; |
4415 | } | |
4416 | ||
ab04a2af TT |
4417 | /* See breakpoint.h. */ |
4418 | ||
4c462cb0 | 4419 | bool |
313f3b21 | 4420 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4421 | { |
ab04a2af TT |
4422 | for (; bsp != NULL; bsp = bsp->next) |
4423 | { | |
427cd150 TT |
4424 | if (bsp->breakpoint_at == NULL) |
4425 | { | |
4426 | /* A moribund location can never explain a signal other than | |
4427 | GDB_SIGNAL_TRAP. */ | |
4428 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4429 | return true; |
427cd150 TT |
4430 | } |
4431 | else | |
47591c29 | 4432 | { |
c47614fe | 4433 | if (bsp->breakpoint_at->explains_signal (sig)) |
4c462cb0 | 4434 | return true; |
47591c29 | 4435 | } |
ab04a2af TT |
4436 | } |
4437 | ||
4c462cb0 | 4438 | return false; |
ab04a2af TT |
4439 | } |
4440 | ||
4a64f543 MS |
4441 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4442 | stopped at. *BSP upon return is a bpstat which points to the | |
4443 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4444 | good for anything but further calls to bpstat_num). | |
4445 | ||
8671a17b PA |
4446 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4447 | Return -1 if stopped at a breakpoint that has been deleted since | |
4448 | we set it. | |
4449 | Return 1 otherwise. */ | |
c906108c SS |
4450 | |
4451 | int | |
313f3b21 | 4452 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4453 | { |
4454 | struct breakpoint *b; | |
4455 | ||
4456 | if ((*bsp) == NULL) | |
4457 | return 0; /* No more breakpoint values */ | |
8671a17b | 4458 | |
4a64f543 MS |
4459 | /* We assume we'll never have several bpstats that correspond to a |
4460 | single breakpoint -- otherwise, this function might return the | |
4461 | same number more than once and this will look ugly. */ | |
f431efe5 | 4462 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4463 | *bsp = (*bsp)->next; |
4464 | if (b == NULL) | |
4465 | return -1; /* breakpoint that's been deleted since */ | |
4466 | ||
4467 | *num = b->number; /* We have its number */ | |
4468 | return 1; | |
c906108c SS |
4469 | } |
4470 | ||
e93ca019 | 4471 | /* See breakpoint.h. */ |
c906108c SS |
4472 | |
4473 | void | |
e93ca019 | 4474 | bpstat_clear_actions (void) |
c906108c | 4475 | { |
313f3b21 | 4476 | bpstat *bs; |
e93ca019 | 4477 | |
00431a78 | 4478 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4479 | return; |
4480 | ||
00431a78 | 4481 | thread_info *tp = inferior_thread (); |
e93ca019 | 4482 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4483 | { |
d1b0a7bf | 4484 | bs->commands = NULL; |
850645cf | 4485 | bs->old_val.reset (nullptr); |
c906108c SS |
4486 | } |
4487 | } | |
4488 | ||
f3b1572e PA |
4489 | /* Called when a command is about to proceed the inferior. */ |
4490 | ||
4491 | static void | |
4492 | breakpoint_about_to_proceed (void) | |
4493 | { | |
d7e15655 | 4494 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4495 | { |
4496 | struct thread_info *tp = inferior_thread (); | |
4497 | ||
4498 | /* Allow inferior function calls in breakpoint commands to not | |
4499 | interrupt the command list. When the call finishes | |
4500 | successfully, the inferior will be standing at the same | |
4501 | breakpoint as if nothing happened. */ | |
16c381f0 | 4502 | if (tp->control.in_infcall) |
f3b1572e PA |
4503 | return; |
4504 | } | |
4505 | ||
4506 | breakpoint_proceeded = 1; | |
4507 | } | |
4508 | ||
abf85f46 JK |
4509 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4510 | or its equivalent. */ | |
4511 | ||
4512 | static int | |
4513 | command_line_is_silent (struct command_line *cmd) | |
4514 | { | |
4f45d445 | 4515 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4516 | } |
4517 | ||
4a64f543 MS |
4518 | /* Execute all the commands associated with all the breakpoints at |
4519 | this location. Any of these commands could cause the process to | |
4520 | proceed beyond this point, etc. We look out for such changes by | |
4521 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4522 | |
347bddb7 PA |
4523 | Returns true if a breakpoint command resumed the inferior. In that |
4524 | case, it is the caller's responsibility to recall it again with the | |
4525 | bpstat of the current thread. */ | |
4526 | ||
4527 | static int | |
313f3b21 | 4528 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4529 | { |
313f3b21 | 4530 | bpstat *bs; |
347bddb7 | 4531 | int again = 0; |
c906108c SS |
4532 | |
4533 | /* Avoid endless recursion if a `source' command is contained | |
4534 | in bs->commands. */ | |
4535 | if (executing_breakpoint_commands) | |
347bddb7 | 4536 | return 0; |
c906108c | 4537 | |
81b1e71c TT |
4538 | scoped_restore save_executing |
4539 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4540 | |
1ac32117 | 4541 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4542 | |
4a64f543 | 4543 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4544 | bs = *bsp; |
4545 | ||
4546 | breakpoint_proceeded = 0; | |
4547 | for (; bs != NULL; bs = bs->next) | |
4548 | { | |
d1b0a7bf | 4549 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4550 | |
4551 | /* Take ownership of the BSP's command tree, if it has one. | |
4552 | ||
dda83cd7 SM |
4553 | The command tree could legitimately contain commands like |
4554 | 'step' and 'next', which call clear_proceed_status, which | |
4555 | frees stop_bpstat's command tree. To make sure this doesn't | |
4556 | free the tree we're executing out from under us, we need to | |
4557 | take ownership of the tree ourselves. Since a given bpstat's | |
4558 | commands are only executed once, we don't need to copy it; we | |
4559 | can clear the pointer in the bpstat, and make sure we free | |
4560 | the tree when we're done. */ | |
d1b0a7bf | 4561 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4562 | bs->commands = NULL; |
d1b0a7bf TT |
4563 | if (ccmd != NULL) |
4564 | cmd = ccmd.get (); | |
abf85f46 JK |
4565 | if (command_line_is_silent (cmd)) |
4566 | { | |
4567 | /* The action has been already done by bpstat_stop_status. */ | |
4568 | cmd = cmd->next; | |
4569 | } | |
6c50ab1c | 4570 | |
c906108c SS |
4571 | while (cmd != NULL) |
4572 | { | |
4573 | execute_control_command (cmd); | |
4574 | ||
4575 | if (breakpoint_proceeded) | |
4576 | break; | |
4577 | else | |
4578 | cmd = cmd->next; | |
4579 | } | |
6c50ab1c | 4580 | |
c906108c | 4581 | if (breakpoint_proceeded) |
32c1e744 | 4582 | { |
cb814510 | 4583 | if (current_ui->async) |
347bddb7 PA |
4584 | /* If we are in async mode, then the target might be still |
4585 | running, not stopped at any breakpoint, so nothing for | |
4586 | us to do here -- just return to the event loop. */ | |
4587 | ; | |
32c1e744 VP |
4588 | else |
4589 | /* In sync mode, when execute_control_command returns | |
4590 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4591 | Breakpoint commands for that stop were not run, since |
4592 | execute_command does not run breakpoint commands -- | |
4593 | only command_line_handler does, but that one is not | |
4594 | involved in execution of breakpoint commands. So, we | |
4595 | can now execute breakpoint commands. It should be | |
4596 | noted that making execute_command do bpstat actions is | |
4597 | not an option -- in this case we'll have recursive | |
4598 | invocation of bpstat for each breakpoint with a | |
4599 | command, and can easily blow up GDB stack. Instead, we | |
4600 | return true, which will trigger the caller to recall us | |
4601 | with the new stop_bpstat. */ | |
4602 | again = 1; | |
4603 | break; | |
32c1e744 | 4604 | } |
c906108c | 4605 | } |
347bddb7 PA |
4606 | return again; |
4607 | } | |
4608 | ||
00431a78 PA |
4609 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4610 | one, is alive and has execution. Return NULL otherwise. */ | |
4611 | ||
4612 | static thread_info * | |
4613 | get_bpstat_thread () | |
4614 | { | |
55f6301a | 4615 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4616 | return NULL; |
4617 | ||
4618 | thread_info *tp = inferior_thread (); | |
611841bb | 4619 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4620 | return NULL; |
4621 | return tp; | |
4622 | } | |
4623 | ||
347bddb7 PA |
4624 | void |
4625 | bpstat_do_actions (void) | |
4626 | { | |
694c6bf5 | 4627 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4628 | thread_info *tp; |
353d1d73 | 4629 | |
347bddb7 | 4630 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4631 | while ((tp = get_bpstat_thread ()) != NULL) |
4632 | { | |
4633 | /* Since in sync mode, bpstat_do_actions may resume the | |
4634 | inferior, and only return when it is stopped at the next | |
4635 | breakpoint, we keep doing breakpoint actions until it returns | |
4636 | false to indicate the inferior was not resumed. */ | |
4637 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4638 | break; | |
4639 | } | |
353d1d73 | 4640 | |
694c6bf5 | 4641 | cleanup_if_error.release (); |
c906108c SS |
4642 | } |
4643 | ||
fa4727a6 DJ |
4644 | /* Print out the (old or new) value associated with a watchpoint. */ |
4645 | ||
4646 | static void | |
4647 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4648 | { | |
4649 | if (val == NULL) | |
7f6aba03 | 4650 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4651 | else |
79a45b7d TT |
4652 | { |
4653 | struct value_print_options opts; | |
4654 | get_user_print_options (&opts); | |
4655 | value_print (val, stream, &opts); | |
4656 | } | |
fa4727a6 DJ |
4657 | } |
4658 | ||
f303dbd6 PA |
4659 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4660 | debugging multiple threads. */ | |
4661 | ||
4662 | void | |
4663 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4664 | { | |
112e8700 | 4665 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4666 | return; |
4667 | ||
112e8700 | 4668 | uiout->text ("\n"); |
f303dbd6 PA |
4669 | |
4670 | if (show_thread_that_caused_stop ()) | |
4671 | { | |
f303dbd6 PA |
4672 | struct thread_info *thr = inferior_thread (); |
4673 | ||
112e8700 | 4674 | uiout->text ("Thread "); |
33eca680 | 4675 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4676 | |
25558938 | 4677 | const char *name = thread_name (thr); |
f303dbd6 PA |
4678 | if (name != NULL) |
4679 | { | |
112e8700 | 4680 | uiout->text (" \""); |
33eca680 | 4681 | uiout->field_string ("name", name); |
112e8700 | 4682 | uiout->text ("\""); |
f303dbd6 PA |
4683 | } |
4684 | ||
112e8700 | 4685 | uiout->text (" hit "); |
f303dbd6 PA |
4686 | } |
4687 | } | |
4688 | ||
e514a9d6 | 4689 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4690 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4691 | 'print_it' in the bpstat structure. Under some circumstances we |
4692 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4693 | normal_stop(). */ |
e514a9d6 JM |
4694 | |
4695 | static enum print_stop_action | |
313f3b21 | 4696 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4697 | { |
4698 | switch (bs->print_it) | |
4699 | { | |
4700 | case print_it_noop: | |
4a64f543 | 4701 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4702 | return PRINT_UNKNOWN; |
4703 | break; | |
4704 | ||
4705 | case print_it_done: | |
4706 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4707 | relevant messages. */ |
e514a9d6 JM |
4708 | return PRINT_SRC_AND_LOC; |
4709 | break; | |
4710 | ||
4711 | case print_it_normal: | |
4f8d1dc6 | 4712 | { |
f431efe5 PA |
4713 | struct breakpoint *b = bs->breakpoint_at; |
4714 | ||
1a6a67de TJB |
4715 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4716 | which has since been deleted. */ | |
4717 | if (b == NULL) | |
4718 | return PRINT_UNKNOWN; | |
4719 | ||
348d480f | 4720 | /* Normal case. Call the breakpoint's print_it method. */ |
c47614fe | 4721 | return b->print_it (bs); |
4f8d1dc6 | 4722 | } |
348d480f | 4723 | break; |
3086aeae | 4724 | |
e514a9d6 | 4725 | default: |
8e65ff28 | 4726 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4727 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4728 | break; |
c906108c | 4729 | } |
c906108c SS |
4730 | } |
4731 | ||
2f9ee862 | 4732 | /* See breakpoint.h. */ |
edcc5120 | 4733 | |
2f9ee862 | 4734 | void |
4e9e993a | 4735 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4736 | { |
6fb16ce6 | 4737 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4738 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4739 | |
4740 | if (!is_catchpoint) | |
4741 | { | |
4742 | if (any_added || any_deleted) | |
112e8700 | 4743 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4744 | else |
112e8700 SM |
4745 | current_uiout->text (_("Stopped due to shared library event (no " |
4746 | "libraries added or removed)\n")); | |
edcc5120 TT |
4747 | } |
4748 | ||
112e8700 SM |
4749 | if (current_uiout->is_mi_like_p ()) |
4750 | current_uiout->field_string ("reason", | |
4751 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4752 | |
4753 | if (any_deleted) | |
4754 | { | |
112e8700 | 4755 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4756 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4757 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4758 | { |
6fb16ce6 SM |
4759 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4760 | ||
edcc5120 | 4761 | if (ix > 0) |
112e8700 SM |
4762 | current_uiout->text (" "); |
4763 | current_uiout->field_string ("library", name); | |
4764 | current_uiout->text ("\n"); | |
edcc5120 | 4765 | } |
edcc5120 TT |
4766 | } |
4767 | ||
4768 | if (any_added) | |
4769 | { | |
112e8700 | 4770 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4771 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4772 | bool first = true; |
52941706 | 4773 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4774 | { |
bcb430e4 | 4775 | if (!first) |
112e8700 | 4776 | current_uiout->text (" "); |
bcb430e4 | 4777 | first = false; |
112e8700 SM |
4778 | current_uiout->field_string ("library", iter->so_name); |
4779 | current_uiout->text ("\n"); | |
edcc5120 | 4780 | } |
edcc5120 TT |
4781 | } |
4782 | } | |
4783 | ||
e514a9d6 JM |
4784 | /* Print a message indicating what happened. This is called from |
4785 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4786 | list - a list of the eventpoints that caused this stop. KIND is |
4787 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4788 | routine calls the generic print routine for printing a message |
4789 | about reasons for stopping. This will print (for example) the | |
4790 | "Breakpoint n," part of the output. The return value of this | |
4791 | routine is one of: | |
c906108c | 4792 | |
4a64f543 | 4793 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4794 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4795 | code to print the location. An example is |
c5aa993b JM |
4796 | "Breakpoint 1, " which should be followed by |
4797 | the location. | |
917317f4 | 4798 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4799 | to also print the location part of the message. |
4800 | An example is the catch/throw messages, which | |
4a64f543 | 4801 | don't require a location appended to the end. |
917317f4 | 4802 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4803 | further info to be printed. */ |
c906108c | 4804 | |
917317f4 | 4805 | enum print_stop_action |
403c71fd | 4806 | bpstat_print (bpstat *bs, target_waitkind kind) |
c906108c | 4807 | { |
f486487f | 4808 | enum print_stop_action val; |
c5aa993b | 4809 | |
c906108c | 4810 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4811 | (Currently all watchpoints go on the bpstat whether hit or not. |
4812 | That probably could (should) be changed, provided care is taken | |
c906108c | 4813 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4814 | for (; bs; bs = bs->next) |
4815 | { | |
4816 | val = print_bp_stop_message (bs); | |
4817 | if (val == PRINT_SRC_ONLY | |
4818 | || val == PRINT_SRC_AND_LOC | |
4819 | || val == PRINT_NOTHING) | |
4820 | return val; | |
4821 | } | |
c906108c | 4822 | |
36dfb11c TT |
4823 | /* If we had hit a shared library event breakpoint, |
4824 | print_bp_stop_message would print out this message. If we hit an | |
4825 | OS-level shared library event, do the same thing. */ | |
4826 | if (kind == TARGET_WAITKIND_LOADED) | |
4827 | { | |
4e9e993a | 4828 | print_solib_event (false); |
36dfb11c TT |
4829 | return PRINT_NOTHING; |
4830 | } | |
4831 | ||
e514a9d6 | 4832 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4833 | with and nothing was printed. */ |
917317f4 | 4834 | return PRINT_UNKNOWN; |
c906108c SS |
4835 | } |
4836 | ||
bf469271 | 4837 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4838 | |
bf469271 PA |
4839 | static bool |
4840 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4841 | { |
278cd55f | 4842 | struct value *mark = value_mark (); |
bf469271 | 4843 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4844 | |
c906108c | 4845 | value_free_to_mark (mark); |
bf469271 | 4846 | return res; |
c906108c SS |
4847 | } |
4848 | ||
5760d0ab | 4849 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4850 | |
313f3b21 | 4851 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4852 | : next (NULL), |
b6433ede | 4853 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4854 | breakpoint_at (bl->owner), |
4855 | commands (NULL), | |
04afa70c TT |
4856 | print (0), |
4857 | stop (0), | |
4858 | print_it (print_it_normal) | |
c906108c | 4859 | { |
04afa70c TT |
4860 | **bs_link_pointer = this; |
4861 | *bs_link_pointer = &next; | |
4862 | } | |
4863 | ||
313f3b21 | 4864 | bpstat::bpstat () |
04afa70c | 4865 | : next (NULL), |
04afa70c TT |
4866 | breakpoint_at (NULL), |
4867 | commands (NULL), | |
04afa70c TT |
4868 | print (0), |
4869 | stop (0), | |
4870 | print_it (print_it_normal) | |
4871 | { | |
c906108c SS |
4872 | } |
4873 | \f | |
d983da9c DJ |
4874 | /* The target has stopped with waitstatus WS. Check if any hardware |
4875 | watchpoints have triggered, according to the target. */ | |
4876 | ||
4877 | int | |
c272a98c | 4878 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 4879 | { |
57810aa7 | 4880 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4881 | CORE_ADDR addr; |
d983da9c DJ |
4882 | |
4883 | if (!stopped_by_watchpoint) | |
4884 | { | |
4885 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4886 | as not triggered. */ | |
43892fdf | 4887 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4888 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4889 | { |
4890 | struct watchpoint *w = (struct watchpoint *) b; | |
4891 | ||
4892 | w->watchpoint_triggered = watch_triggered_no; | |
4893 | } | |
d983da9c DJ |
4894 | |
4895 | return 0; | |
4896 | } | |
4897 | ||
328d42d8 | 4898 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4899 | { |
4900 | /* We were stopped by a watchpoint, but we don't know where. | |
4901 | Mark all watchpoints as unknown. */ | |
43892fdf | 4902 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4903 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4904 | { |
4905 | struct watchpoint *w = (struct watchpoint *) b; | |
4906 | ||
4907 | w->watchpoint_triggered = watch_triggered_unknown; | |
4908 | } | |
d983da9c | 4909 | |
3c4797ba | 4910 | return 1; |
d983da9c DJ |
4911 | } |
4912 | ||
4913 | /* The target could report the data address. Mark watchpoints | |
4914 | affected by this data address as triggered, and all others as not | |
4915 | triggered. */ | |
4916 | ||
43892fdf | 4917 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4918 | if (is_hardware_watchpoint (b)) |
d983da9c | 4919 | { |
3a5c3e22 | 4920 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4921 | |
3a5c3e22 | 4922 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4923 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4924 | { |
3a5c3e22 | 4925 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4926 | { |
3a5c3e22 PA |
4927 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4928 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4929 | |
4930 | if (newaddr == start) | |
4931 | { | |
3a5c3e22 | 4932 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4933 | break; |
4934 | } | |
4935 | } | |
4936 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4937 | else if (target_watchpoint_addr_within_range |
4938 | (current_inferior ()->top_target (), addr, loc->address, | |
4939 | loc->length)) | |
9c06b0b4 | 4940 | { |
3a5c3e22 | 4941 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4942 | break; |
4943 | } | |
4944 | } | |
d983da9c DJ |
4945 | } |
4946 | ||
4947 | return 1; | |
4948 | } | |
4949 | ||
bf469271 PA |
4950 | /* Possible return values for watchpoint_check. */ |
4951 | enum wp_check_result | |
4952 | { | |
4953 | /* The watchpoint has been deleted. */ | |
4954 | WP_DELETED = 1, | |
4955 | ||
4956 | /* The value has changed. */ | |
4957 | WP_VALUE_CHANGED = 2, | |
4958 | ||
4959 | /* The value has not changed. */ | |
4960 | WP_VALUE_NOT_CHANGED = 3, | |
4961 | ||
4962 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4963 | WP_IGNORE = 4, | |
4964 | }; | |
c906108c SS |
4965 | |
4966 | #define BP_TEMPFLAG 1 | |
4967 | #define BP_HARDWAREFLAG 2 | |
4968 | ||
4a64f543 | 4969 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4970 | changed. */ |
553e4c11 | 4971 | |
bf469271 | 4972 | static wp_check_result |
313f3b21 | 4973 | watchpoint_check (bpstat *bs) |
c906108c | 4974 | { |
3a5c3e22 | 4975 | struct watchpoint *b; |
c906108c SS |
4976 | struct frame_info *fr; |
4977 | int within_current_scope; | |
4978 | ||
f431efe5 | 4979 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4980 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4981 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4982 | |
f6bc2008 PA |
4983 | /* If this is a local watchpoint, we only want to check if the |
4984 | watchpoint frame is in scope if the current thread is the thread | |
4985 | that was used to create the watchpoint. */ | |
4986 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4987 | return WP_IGNORE; |
f6bc2008 | 4988 | |
c906108c SS |
4989 | if (b->exp_valid_block == NULL) |
4990 | within_current_scope = 1; | |
4991 | else | |
4992 | { | |
edb3359d DJ |
4993 | struct frame_info *frame = get_current_frame (); |
4994 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4995 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4996 | ||
c9cf6e20 | 4997 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4998 | still in the function but the stack frame has already been |
4999 | invalidated. Since we can't rely on the values of local | |
5000 | variables after the stack has been destroyed, we are treating | |
5001 | the watchpoint in that state as `not changed' without further | |
5002 | checking. Don't mark watchpoints as changed if the current | |
5003 | frame is in an epilogue - even if they are in some other | |
5004 | frame, our view of the stack is likely to be wrong and | |
5005 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5006 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5007 | return WP_IGNORE; |
a0f49112 | 5008 | |
101dcfbe | 5009 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5010 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5011 | |
5012 | /* If we've gotten confused in the unwinder, we might have | |
5013 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5014 | if (within_current_scope) |
5015 | { | |
5016 | struct symbol *function; | |
5017 | ||
5018 | function = get_frame_function (fr); | |
5019 | if (function == NULL | |
4aeddc50 | 5020 | || !contained_in (b->exp_valid_block, function->value_block ())) |
edb3359d DJ |
5021 | within_current_scope = 0; |
5022 | } | |
69fbadd5 | 5023 | |
edb3359d | 5024 | if (within_current_scope) |
c906108c SS |
5025 | /* If we end up stopping, the current frame will get selected |
5026 | in normal_stop. So this call to select_frame won't affect | |
5027 | the user. */ | |
0f7d239c | 5028 | select_frame (fr); |
c906108c | 5029 | } |
c5aa993b | 5030 | |
c906108c SS |
5031 | if (within_current_scope) |
5032 | { | |
4a64f543 | 5033 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
5034 | time before we return to the command level and call |
5035 | free_all_values. We can't call free_all_values because we | |
5036 | might be in the middle of evaluating a function call. */ | |
c906108c | 5037 | |
9c06b0b4 | 5038 | struct value *mark; |
fa4727a6 DJ |
5039 | struct value *new_val; |
5040 | ||
c1fc2657 | 5041 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5042 | /* Since we don't know the exact trigger address (from |
5043 | stopped_data_address), just tell the user we've triggered | |
5044 | a mask watchpoint. */ | |
5045 | return WP_VALUE_CHANGED; | |
5046 | ||
5047 | mark = value_mark (); | |
1eaebe02 | 5048 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 5049 | NULL, NULL, false); |
218d2fc6 | 5050 | |
bb9d5f81 PP |
5051 | if (b->val_bitsize != 0) |
5052 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5053 | ||
4a64f543 MS |
5054 | /* We use value_equal_contents instead of value_equal because |
5055 | the latter coerces an array to a pointer, thus comparing just | |
5056 | the address of the array instead of its contents. This is | |
5057 | not what we want. */ | |
fa4727a6 | 5058 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
5059 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
5060 | new_val))) | |
c906108c | 5061 | { |
c906108c | 5062 | bs->old_val = b->val; |
850645cf | 5063 | b->val = release_value (new_val); |
4c1d86d9 | 5064 | b->val_valid = true; |
850645cf TT |
5065 | if (new_val != NULL) |
5066 | value_free_to_mark (mark); | |
c906108c SS |
5067 | return WP_VALUE_CHANGED; |
5068 | } | |
5069 | else | |
5070 | { | |
60e1c644 | 5071 | /* Nothing changed. */ |
c906108c | 5072 | value_free_to_mark (mark); |
c906108c SS |
5073 | return WP_VALUE_NOT_CHANGED; |
5074 | } | |
5075 | } | |
5076 | else | |
5077 | { | |
5078 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
5079 | if we temporarily ignored the watchpoint, then when |
5080 | we reenter the block in which it is valid it contains | |
5081 | garbage (in the case of a function, it may have two | |
5082 | garbage values, one before and one after the prologue). | |
5083 | So we can't even detect the first assignment to it and | |
5084 | watch after that (since the garbage may or may not equal | |
5085 | the first value assigned). */ | |
348d480f | 5086 | /* We print all the stop information in |
c47614fe TT |
5087 | breakpointprint_it, but in this case, by the time we |
5088 | call breakpoint->print_it this bp will be deleted | |
348d480f PA |
5089 | already. So we have no choice but print the information |
5090 | here. */ | |
468afe6c | 5091 | |
0e454242 | 5092 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5093 | { |
468afe6c PA |
5094 | struct ui_out *uiout = current_uiout; |
5095 | ||
112e8700 SM |
5096 | if (uiout->is_mi_like_p ()) |
5097 | uiout->field_string | |
5098 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5099 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5100 | "left the block in\n" | |
5101 | "which its expression is valid.\n", | |
5102 | signed_field ("wpnum", b->number)); | |
468afe6c | 5103 | } |
4ce44c66 | 5104 | |
cdac0397 | 5105 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5106 | b->commands = NULL; |
d0fb5eae | 5107 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5108 | |
5109 | return WP_DELETED; | |
5110 | } | |
5111 | } | |
5112 | ||
18a18393 | 5113 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5114 | breakpoint location BL. This function does not check if we should |
5115 | stop, only if BL explains the stop. */ | |
5116 | ||
18a18393 | 5117 | static int |
6c95b8df | 5118 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5119 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5120 | const target_waitstatus &ws) |
18a18393 VP |
5121 | { |
5122 | struct breakpoint *b = bl->owner; | |
5123 | ||
348d480f | 5124 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5125 | gdb_assert (b != NULL); |
5126 | ||
c47614fe | 5127 | return b->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5128 | } |
5129 | ||
3a5c3e22 PA |
5130 | /* Determine if the watched values have actually changed, and we |
5131 | should stop. If not, set BS->stop to 0. */ | |
5132 | ||
18a18393 | 5133 | static void |
313f3b21 | 5134 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5135 | { |
2bdf28a0 | 5136 | const struct bp_location *bl; |
3a5c3e22 | 5137 | struct watchpoint *b; |
2bdf28a0 JK |
5138 | |
5139 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5140 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5141 | gdb_assert (bl != NULL); |
3a5c3e22 | 5142 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5143 | gdb_assert (b != NULL); |
18a18393 | 5144 | |
18a18393 | 5145 | { |
18a18393 VP |
5146 | int must_check_value = 0; |
5147 | ||
c1fc2657 | 5148 | if (b->type == bp_watchpoint) |
18a18393 VP |
5149 | /* For a software watchpoint, we must always check the |
5150 | watched value. */ | |
5151 | must_check_value = 1; | |
5152 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5153 | /* We have a hardware watchpoint (read, write, or access) | |
5154 | and the target earlier reported an address watched by | |
5155 | this watchpoint. */ | |
5156 | must_check_value = 1; | |
5157 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5158 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5159 | /* We were stopped by a hardware watchpoint, but the target could |
5160 | not report the data address. We must check the watchpoint's | |
5161 | value. Access and read watchpoints are out of luck; without | |
5162 | a data address, we can't figure it out. */ | |
5163 | must_check_value = 1; | |
3a5c3e22 | 5164 | |
18a18393 VP |
5165 | if (must_check_value) |
5166 | { | |
bf469271 PA |
5167 | wp_check_result e; |
5168 | ||
a70b8144 | 5169 | try |
bf469271 PA |
5170 | { |
5171 | e = watchpoint_check (bs); | |
5172 | } | |
230d2906 | 5173 | catch (const gdb_exception &ex) |
bf469271 PA |
5174 | { |
5175 | exception_fprintf (gdb_stderr, ex, | |
5176 | "Error evaluating expression " | |
5177 | "for watchpoint %d\n", | |
5178 | b->number); | |
5179 | ||
5180 | SWITCH_THRU_ALL_UIS () | |
5181 | { | |
6cb06a8c TT |
5182 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5183 | b->number); | |
bf469271 PA |
5184 | } |
5185 | watchpoint_del_at_next_stop (b); | |
5186 | e = WP_DELETED; | |
5187 | } | |
bf469271 | 5188 | |
18a18393 VP |
5189 | switch (e) |
5190 | { | |
5191 | case WP_DELETED: | |
5192 | /* We've already printed what needs to be printed. */ | |
5193 | bs->print_it = print_it_done; | |
5194 | /* Stop. */ | |
5195 | break; | |
60e1c644 PA |
5196 | case WP_IGNORE: |
5197 | bs->print_it = print_it_noop; | |
5198 | bs->stop = 0; | |
5199 | break; | |
18a18393 | 5200 | case WP_VALUE_CHANGED: |
c1fc2657 | 5201 | if (b->type == bp_read_watchpoint) |
18a18393 | 5202 | { |
85d721b8 PA |
5203 | /* There are two cases to consider here: |
5204 | ||
4a64f543 | 5205 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5206 | In that case, trust the target, and always report |
5207 | the watchpoint hit to the user. Even though | |
5208 | reads don't cause value changes, the value may | |
5209 | have changed since the last time it was read, and | |
5210 | since we're not trapping writes, we will not see | |
5211 | those, and as such we should ignore our notion of | |
5212 | old value. | |
5213 | ||
4a64f543 | 5214 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5215 | reads and writes. There are two ways this may |
5216 | happen: | |
5217 | ||
4a64f543 | 5218 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5219 | reads only, but can break on accesses (reads or |
5220 | writes), such as e.g., x86. We detect this case | |
5221 | at the time we try to insert read watchpoints. | |
5222 | ||
4a64f543 | 5223 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5224 | watchpoints, but, the user set an access or write |
5225 | watchpoint watching the same memory as this read | |
5226 | watchpoint. | |
5227 | ||
5228 | If we're watching memory writes as well as reads, | |
5229 | ignore watchpoint hits when we find that the | |
5230 | value hasn't changed, as reads don't cause | |
5231 | changes. This still gives false positives when | |
5232 | the program writes the same value to memory as | |
5233 | what there was already in memory (we will confuse | |
5234 | it for a read), but it's much better than | |
5235 | nothing. */ | |
5236 | ||
5237 | int other_write_watchpoint = 0; | |
5238 | ||
5239 | if (bl->watchpoint_type == hw_read) | |
5240 | { | |
43892fdf | 5241 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5242 | if (other_b->type == bp_hardware_watchpoint |
5243 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5244 | { |
3a5c3e22 PA |
5245 | struct watchpoint *other_w = |
5246 | (struct watchpoint *) other_b; | |
5247 | ||
5248 | if (other_w->watchpoint_triggered | |
5249 | == watch_triggered_yes) | |
5250 | { | |
5251 | other_write_watchpoint = 1; | |
5252 | break; | |
5253 | } | |
85d721b8 PA |
5254 | } |
5255 | } | |
5256 | ||
5257 | if (other_write_watchpoint | |
5258 | || bl->watchpoint_type == hw_access) | |
5259 | { | |
5260 | /* We're watching the same memory for writes, | |
5261 | and the value changed since the last time we | |
5262 | updated it, so this trap must be for a write. | |
5263 | Ignore it. */ | |
5264 | bs->print_it = print_it_noop; | |
5265 | bs->stop = 0; | |
5266 | } | |
18a18393 VP |
5267 | } |
5268 | break; | |
5269 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5270 | if (b->type == bp_hardware_watchpoint |
5271 | || b->type == bp_watchpoint) | |
18a18393 VP |
5272 | { |
5273 | /* Don't stop: write watchpoints shouldn't fire if | |
5274 | the value hasn't changed. */ | |
5275 | bs->print_it = print_it_noop; | |
5276 | bs->stop = 0; | |
5277 | } | |
5278 | /* Stop. */ | |
5279 | break; | |
5280 | default: | |
5281 | /* Can't happen. */ | |
18a18393 VP |
5282 | break; |
5283 | } | |
5284 | } | |
5285 | else /* must_check_value == 0 */ | |
5286 | { | |
5287 | /* This is a case where some watchpoint(s) triggered, but | |
5288 | not at the address of this watchpoint, or else no | |
5289 | watchpoint triggered after all. So don't print | |
5290 | anything for this watchpoint. */ | |
5291 | bs->print_it = print_it_noop; | |
5292 | bs->stop = 0; | |
5293 | } | |
5294 | } | |
5295 | } | |
5296 | ||
7d4df6a4 DE |
5297 | /* For breakpoints that are currently marked as telling gdb to stop, |
5298 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5299 | of breakpoint referred to by BS. If we should not stop for this |
5300 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5301 | |
18a18393 | 5302 | static void |
313f3b21 | 5303 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5304 | { |
2bdf28a0 JK |
5305 | const struct bp_location *bl; |
5306 | struct breakpoint *b; | |
bf469271 PA |
5307 | /* Assume stop. */ |
5308 | bool condition_result = true; | |
7d4df6a4 DE |
5309 | struct expression *cond; |
5310 | ||
5311 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5312 | |
5313 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5314 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5315 | gdb_assert (bl != NULL); |
f431efe5 | 5316 | b = bs->breakpoint_at; |
2bdf28a0 | 5317 | gdb_assert (b != NULL); |
18a18393 | 5318 | |
b775012e LM |
5319 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5320 | need to do so again since GDB does not know if we stopped due to a | |
5321 | breakpoint or a single step breakpoint. */ | |
5322 | ||
18a18393 | 5323 | if (frame_id_p (b->frame_id) |
edb3359d | 5324 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5325 | { |
7d4df6a4 DE |
5326 | bs->stop = 0; |
5327 | return; | |
5328 | } | |
60e1c644 | 5329 | |
12ab52e9 PA |
5330 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5331 | evaluating the condition if this isn't the specified | |
5332 | thread/task. */ | |
00431a78 PA |
5333 | if ((b->thread != -1 && b->thread != thread->global_num) |
5334 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5335 | { |
5336 | bs->stop = 0; | |
5337 | return; | |
5338 | } | |
5339 | ||
6dddc817 DE |
5340 | /* Evaluate extension language breakpoints that have a "stop" method |
5341 | implemented. */ | |
5342 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5343 | |
7d4df6a4 DE |
5344 | if (is_watchpoint (b)) |
5345 | { | |
5346 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5347 | |
4d01a485 | 5348 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5349 | } |
5350 | else | |
4d01a485 | 5351 | cond = bl->cond.get (); |
60e1c644 | 5352 | |
7d4df6a4 DE |
5353 | if (cond && b->disposition != disp_del_at_next_stop) |
5354 | { | |
5355 | int within_current_scope = 1; | |
5356 | struct watchpoint * w; | |
60e1c644 | 5357 | |
7d4df6a4 DE |
5358 | /* We use value_mark and value_free_to_mark because it could |
5359 | be a long time before we return to the command level and | |
5360 | call free_all_values. We can't call free_all_values | |
5361 | because we might be in the middle of evaluating a | |
5362 | function call. */ | |
5363 | struct value *mark = value_mark (); | |
5364 | ||
5365 | if (is_watchpoint (b)) | |
5366 | w = (struct watchpoint *) b; | |
5367 | else | |
5368 | w = NULL; | |
5369 | ||
5370 | /* Need to select the frame, with all that implies so that | |
5371 | the conditions will have the right context. Because we | |
5372 | use the frame, we will not see an inlined function's | |
5373 | variables when we arrive at a breakpoint at the start | |
5374 | of the inlined function; the current frame will be the | |
5375 | call site. */ | |
5376 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5377 | select_frame (get_current_frame ()); | |
5378 | else | |
18a18393 | 5379 | { |
7d4df6a4 DE |
5380 | struct frame_info *frame; |
5381 | ||
5382 | /* For local watchpoint expressions, which particular | |
5383 | instance of a local is being watched matters, so we | |
5384 | keep track of the frame to evaluate the expression | |
5385 | in. To evaluate the condition however, it doesn't | |
5386 | really matter which instantiation of the function | |
5387 | where the condition makes sense triggers the | |
5388 | watchpoint. This allows an expression like "watch | |
5389 | global if q > 10" set in `func', catch writes to | |
5390 | global on all threads that call `func', or catch | |
5391 | writes on all recursive calls of `func' by a single | |
5392 | thread. We simply always evaluate the condition in | |
5393 | the innermost frame that's executing where it makes | |
5394 | sense to evaluate the condition. It seems | |
5395 | intuitive. */ | |
5396 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5397 | if (frame != NULL) | |
5398 | select_frame (frame); | |
5399 | else | |
5400 | within_current_scope = 0; | |
18a18393 | 5401 | } |
7d4df6a4 | 5402 | if (within_current_scope) |
bf469271 | 5403 | { |
a70b8144 | 5404 | try |
bf469271 PA |
5405 | { |
5406 | condition_result = breakpoint_cond_eval (cond); | |
5407 | } | |
230d2906 | 5408 | catch (const gdb_exception &ex) |
bf469271 PA |
5409 | { |
5410 | exception_fprintf (gdb_stderr, ex, | |
5411 | "Error in testing breakpoint condition:\n"); | |
5412 | } | |
bf469271 | 5413 | } |
7d4df6a4 | 5414 | else |
18a18393 | 5415 | { |
7d4df6a4 DE |
5416 | warning (_("Watchpoint condition cannot be tested " |
5417 | "in the current scope")); | |
5418 | /* If we failed to set the right context for this | |
5419 | watchpoint, unconditionally report it. */ | |
18a18393 | 5420 | } |
7d4df6a4 DE |
5421 | /* FIXME-someday, should give breakpoint #. */ |
5422 | value_free_to_mark (mark); | |
18a18393 | 5423 | } |
7d4df6a4 | 5424 | |
bf469271 | 5425 | if (cond && !condition_result) |
7d4df6a4 DE |
5426 | { |
5427 | bs->stop = 0; | |
5428 | } | |
7d4df6a4 DE |
5429 | else if (b->ignore_count > 0) |
5430 | { | |
5431 | b->ignore_count--; | |
5432 | bs->stop = 0; | |
5433 | /* Increase the hit count even though we don't stop. */ | |
5434 | ++(b->hit_count); | |
76727919 | 5435 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5436 | } |
18a18393 VP |
5437 | } |
5438 | ||
1cf4d951 PA |
5439 | /* Returns true if we need to track moribund locations of LOC's type |
5440 | on the current target. */ | |
5441 | ||
5442 | static int | |
5443 | need_moribund_for_location_type (struct bp_location *loc) | |
5444 | { | |
5445 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5446 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5447 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5448 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5449 | } | |
5450 | ||
ddfe970e | 5451 | /* See breakpoint.h. */ |
c906108c | 5452 | |
313f3b21 | 5453 | bpstat * |
ddfe970e | 5454 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5455 | const target_waitstatus &ws) |
c906108c | 5456 | { |
313f3b21 | 5457 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5458 | |
43892fdf | 5459 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5460 | { |
1a853c52 | 5461 | if (!breakpoint_enabled (b)) |
429374b8 | 5462 | continue; |
a5606eee | 5463 | |
40cb8ca5 | 5464 | for (bp_location *bl : b->locations ()) |
429374b8 | 5465 | { |
4a64f543 MS |
5466 | /* For hardware watchpoints, we look only at the first |
5467 | location. The watchpoint_check function will work on the | |
5468 | entire expression, not the individual locations. For | |
5469 | read watchpoints, the watchpoints_triggered function has | |
5470 | checked all locations already. */ | |
429374b8 JK |
5471 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5472 | break; | |
18a18393 | 5473 | |
b5fa468f | 5474 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5475 | continue; |
c5aa993b | 5476 | |
09ac7c10 | 5477 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5478 | continue; |
c5aa993b | 5479 | |
4a64f543 MS |
5480 | /* Come here if it's a watchpoint, or if the break address |
5481 | matches. */ | |
c5aa993b | 5482 | |
313f3b21 | 5483 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5484 | explain stop. */ |
c5aa993b | 5485 | |
f431efe5 PA |
5486 | /* Assume we stop. Should we find a watchpoint that is not |
5487 | actually triggered, or if the condition of the breakpoint | |
5488 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5489 | bs->stop = 1; |
5490 | bs->print = 1; | |
d983da9c | 5491 | |
f431efe5 PA |
5492 | /* If this is a scope breakpoint, mark the associated |
5493 | watchpoint as triggered so that we will handle the | |
5494 | out-of-scope event. We'll get to the watchpoint next | |
5495 | iteration. */ | |
d0fb5eae | 5496 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5497 | { |
5498 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5499 | ||
5500 | w->watchpoint_triggered = watch_triggered_yes; | |
5501 | } | |
f431efe5 PA |
5502 | } |
5503 | } | |
5504 | ||
7c16b83e | 5505 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5506 | if (!target_supports_stopped_by_sw_breakpoint () |
5507 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5508 | { |
1123588c | 5509 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5510 | { |
1cf4d951 PA |
5511 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5512 | && need_moribund_for_location_type (loc)) | |
5513 | { | |
313f3b21 | 5514 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 PA |
5515 | /* For hits of moribund locations, we should just proceed. */ |
5516 | bs->stop = 0; | |
5517 | bs->print = 0; | |
5518 | bs->print_it = print_it_noop; | |
5519 | } | |
f431efe5 PA |
5520 | } |
5521 | } | |
5522 | ||
ddfe970e KS |
5523 | return bs_head; |
5524 | } | |
5525 | ||
5526 | /* See breakpoint.h. */ | |
5527 | ||
313f3b21 | 5528 | bpstat * |
ddfe970e | 5529 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5530 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5531 | const target_waitstatus &ws, |
313f3b21 | 5532 | bpstat *stop_chain) |
ddfe970e KS |
5533 | { |
5534 | struct breakpoint *b = NULL; | |
5535 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5536 | bpstat *bs_head = stop_chain; |
5537 | bpstat *bs; | |
ddfe970e KS |
5538 | int need_remove_insert; |
5539 | int removed_any; | |
5540 | ||
5541 | /* First, build the bpstat chain with locations that explain a | |
5542 | target stop, while being careful to not set the target running, | |
5543 | as that may invalidate locations (in particular watchpoint | |
5544 | locations are recreated). Resuming will happen here with | |
5545 | breakpoint conditions or watchpoint expressions that include | |
5546 | inferior function calls. */ | |
5547 | if (bs_head == NULL) | |
5548 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5549 | ||
edcc5120 TT |
5550 | /* A bit of special processing for shlib breakpoints. We need to |
5551 | process solib loading here, so that the lists of loaded and | |
5552 | unloaded libraries are correct before we handle "catch load" and | |
5553 | "catch unload". */ | |
5554 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5555 | { | |
5d268276 | 5556 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5557 | { |
5558 | handle_solib_event (); | |
5559 | break; | |
5560 | } | |
5561 | } | |
5562 | ||
f431efe5 PA |
5563 | /* Now go through the locations that caused the target to stop, and |
5564 | check whether we're interested in reporting this stop to higher | |
5565 | layers, or whether we should resume the target transparently. */ | |
5566 | ||
5567 | removed_any = 0; | |
5568 | ||
5760d0ab | 5569 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5570 | { |
5571 | if (!bs->stop) | |
5572 | continue; | |
5573 | ||
f431efe5 | 5574 | b = bs->breakpoint_at; |
c47614fe | 5575 | b->check_status (bs); |
348d480f | 5576 | if (bs->stop) |
28010a5d | 5577 | { |
00431a78 | 5578 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5579 | |
429374b8 JK |
5580 | if (bs->stop) |
5581 | { | |
5582 | ++(b->hit_count); | |
c906108c | 5583 | |
4a64f543 | 5584 | /* We will stop here. */ |
429374b8 JK |
5585 | if (b->disposition == disp_disable) |
5586 | { | |
816338b5 | 5587 | --(b->enable_count); |
1a853c52 | 5588 | if (b->enable_count <= 0) |
429374b8 | 5589 | b->enable_state = bp_disabled; |
f431efe5 | 5590 | removed_any = 1; |
429374b8 | 5591 | } |
bd7ccaa9 | 5592 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 JK |
5593 | if (b->silent) |
5594 | bs->print = 0; | |
5595 | bs->commands = b->commands; | |
abf85f46 | 5596 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5597 | ? bs->commands.get () : NULL)) |
abf85f46 | 5598 | bs->print = 0; |
9d6e6e84 | 5599 | |
c47614fe | 5600 | b->after_condition_true (bs); |
429374b8 JK |
5601 | } |
5602 | ||
348d480f | 5603 | } |
a9b3a50f PA |
5604 | |
5605 | /* Print nothing for this entry if we don't stop or don't | |
5606 | print. */ | |
5607 | if (!bs->stop || !bs->print) | |
5608 | bs->print_it = print_it_noop; | |
429374b8 | 5609 | } |
876fa593 | 5610 | |
d983da9c DJ |
5611 | /* If we aren't stopping, the value of some hardware watchpoint may |
5612 | not have changed, but the intermediate memory locations we are | |
5613 | watching may have. Don't bother if we're stopping; this will get | |
5614 | done later. */ | |
d832cb68 | 5615 | need_remove_insert = 0; |
5760d0ab JK |
5616 | if (! bpstat_causes_stop (bs_head)) |
5617 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5618 | if (!bs->stop |
f431efe5 PA |
5619 | && bs->breakpoint_at |
5620 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5621 | { |
3a5c3e22 PA |
5622 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5623 | ||
5624 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5625 | need_remove_insert = 1; |
d983da9c DJ |
5626 | } |
5627 | ||
d832cb68 | 5628 | if (need_remove_insert) |
44702360 | 5629 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5630 | else if (removed_any) |
44702360 | 5631 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5632 | |
5760d0ab | 5633 | return bs_head; |
c906108c | 5634 | } |
628fe4e4 | 5635 | |
d37e0847 PA |
5636 | /* See breakpoint.h. */ |
5637 | ||
5638 | bpstat * | |
5639 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5640 | thread_info *thread, const target_waitstatus &ws) | |
5641 | { | |
5642 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5643 | ||
5644 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5645 | previous stop to avoid confusing bpstat_stop_status. */ | |
5646 | watchpoints_triggered (ws); | |
5647 | ||
5648 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5649 | } | |
5650 | ||
628fe4e4 | 5651 | static void |
61c26be8 | 5652 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5653 | { |
628fe4e4 JK |
5654 | struct gdbarch *gdbarch; |
5655 | ||
1eb8556f | 5656 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5657 | |
628fe4e4 JK |
5658 | /* Switch terminal for any messages produced by |
5659 | breakpoint_re_set. */ | |
223ffa71 | 5660 | target_terminal::ours_for_output (); |
628fe4e4 | 5661 | |
61c26be8 MS |
5662 | gdbarch = get_frame_arch (get_current_frame ()); |
5663 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5664 | thus it is expected that its objectfile can be found through | |
5665 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5666 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5667 | function needs to be updated too. */ | |
5668 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5669 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5670 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5671 | |
223ffa71 | 5672 | target_terminal::inferior (); |
628fe4e4 JK |
5673 | } |
5674 | ||
5675 | /* Prepare WHAT final decision for infrun. */ | |
5676 | ||
5677 | /* Decide what infrun needs to do with this bpstat. */ | |
5678 | ||
c906108c | 5679 | struct bpstat_what |
313f3b21 | 5680 | bpstat_what (bpstat *bs_head) |
c906108c | 5681 | { |
c906108c | 5682 | struct bpstat_what retval; |
313f3b21 | 5683 | bpstat *bs; |
c906108c | 5684 | |
628fe4e4 | 5685 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5686 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5687 | retval.is_longjmp = false; |
628fe4e4 | 5688 | |
0e30163f | 5689 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5690 | { |
628fe4e4 JK |
5691 | /* Extract this BS's action. After processing each BS, we check |
5692 | if its action overrides all we've seem so far. */ | |
5693 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5694 | enum bptype bptype; | |
5695 | ||
c906108c | 5696 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5697 | { |
5698 | /* I suspect this can happen if it was a momentary | |
5699 | breakpoint which has since been deleted. */ | |
5700 | bptype = bp_none; | |
5701 | } | |
20874c92 | 5702 | else |
f431efe5 | 5703 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5704 | |
5705 | switch (bptype) | |
c906108c SS |
5706 | { |
5707 | case bp_none: | |
628fe4e4 | 5708 | break; |
c906108c SS |
5709 | case bp_breakpoint: |
5710 | case bp_hardware_breakpoint: | |
7c16b83e | 5711 | case bp_single_step: |
c906108c SS |
5712 | case bp_until: |
5713 | case bp_finish: | |
a9b3a50f | 5714 | case bp_shlib_event: |
c906108c SS |
5715 | if (bs->stop) |
5716 | { | |
5717 | if (bs->print) | |
628fe4e4 | 5718 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5719 | else |
628fe4e4 | 5720 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5721 | } |
5722 | else | |
628fe4e4 | 5723 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5724 | break; |
5725 | case bp_watchpoint: | |
5726 | case bp_hardware_watchpoint: | |
5727 | case bp_read_watchpoint: | |
5728 | case bp_access_watchpoint: | |
5729 | if (bs->stop) | |
5730 | { | |
5731 | if (bs->print) | |
628fe4e4 | 5732 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5733 | else |
628fe4e4 | 5734 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5735 | } |
5736 | else | |
628fe4e4 JK |
5737 | { |
5738 | /* There was a watchpoint, but we're not stopping. | |
5739 | This requires no further action. */ | |
5740 | } | |
c906108c SS |
5741 | break; |
5742 | case bp_longjmp: | |
e2e4d78b | 5743 | case bp_longjmp_call_dummy: |
186c406b | 5744 | case bp_exception: |
0a39bb32 PA |
5745 | if (bs->stop) |
5746 | { | |
5747 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5748 | retval.is_longjmp = bptype != bp_exception; | |
5749 | } | |
5750 | else | |
5751 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5752 | break; |
5753 | case bp_longjmp_resume: | |
186c406b | 5754 | case bp_exception_resume: |
0a39bb32 PA |
5755 | if (bs->stop) |
5756 | { | |
5757 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5758 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5759 | } | |
5760 | else | |
5761 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5762 | break; |
5763 | case bp_step_resume: | |
5764 | if (bs->stop) | |
628fe4e4 JK |
5765 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5766 | else | |
c906108c | 5767 | { |
628fe4e4 JK |
5768 | /* It is for the wrong frame. */ |
5769 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5770 | } |
c906108c | 5771 | break; |
2c03e5be PA |
5772 | case bp_hp_step_resume: |
5773 | if (bs->stop) | |
5774 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5775 | else | |
5776 | { | |
5777 | /* It is for the wrong frame. */ | |
5778 | this_action = BPSTAT_WHAT_SINGLE; | |
5779 | } | |
5780 | break; | |
c906108c | 5781 | case bp_watchpoint_scope: |
c4093a6a | 5782 | case bp_thread_event: |
1900040c | 5783 | case bp_overlay_event: |
0fd8e87f | 5784 | case bp_longjmp_master: |
aa7d318d | 5785 | case bp_std_terminate_master: |
186c406b | 5786 | case bp_exception_master: |
628fe4e4 | 5787 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5788 | break; |
ce78b96d | 5789 | case bp_catchpoint: |
c5aa993b JM |
5790 | if (bs->stop) |
5791 | { | |
5792 | if (bs->print) | |
628fe4e4 | 5793 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5794 | else |
628fe4e4 | 5795 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5796 | } |
5797 | else | |
628fe4e4 | 5798 | { |
cb1e4e32 PA |
5799 | /* Some catchpoints are implemented with breakpoints. |
5800 | For those, we need to step over the breakpoint. */ | |
6e14e441 PA |
5801 | if (bs->bp_location_at->loc_type == bp_loc_software_breakpoint |
5802 | || bs->bp_location_at->loc_type == bp_loc_hardware_breakpoint) | |
cb1e4e32 | 5803 | this_action = BPSTAT_WHAT_SINGLE; |
628fe4e4 JK |
5804 | } |
5805 | break; | |
628fe4e4 | 5806 | case bp_jit_event: |
628fe4e4 | 5807 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5808 | break; |
c906108c | 5809 | case bp_call_dummy: |
53a5351d JM |
5810 | /* Make sure the action is stop (silent or noisy), |
5811 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5812 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5813 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5814 | break; |
5815 | case bp_std_terminate: | |
5816 | /* Make sure the action is stop (silent or noisy), | |
5817 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5818 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5819 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5820 | break; |
1042e4c0 | 5821 | case bp_tracepoint: |
7a697b8d | 5822 | case bp_fast_tracepoint: |
0fb4aa4b | 5823 | case bp_static_tracepoint: |
7b572efb | 5824 | case bp_static_marker_tracepoint: |
1042e4c0 SS |
5825 | /* Tracepoint hits should not be reported back to GDB, and |
5826 | if one got through somehow, it should have been filtered | |
5827 | out already. */ | |
5828 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5829 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5830 | break; |
5831 | case bp_gnu_ifunc_resolver: | |
5832 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5833 | this_action = BPSTAT_WHAT_SINGLE; | |
5834 | break; | |
5835 | case bp_gnu_ifunc_resolver_return: | |
5836 | /* The breakpoint will be removed, execution will restart from the | |
5837 | PC of the former breakpoint. */ | |
5838 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5839 | break; | |
e7e0cddf SS |
5840 | |
5841 | case bp_dprintf: | |
a11cfd87 HZ |
5842 | if (bs->stop) |
5843 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5844 | else | |
5845 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5846 | break; |
5847 | ||
628fe4e4 JK |
5848 | default: |
5849 | internal_error (__FILE__, __LINE__, | |
5850 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5851 | } |
628fe4e4 | 5852 | |
325fac50 | 5853 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5854 | } |
628fe4e4 | 5855 | |
243a9253 PA |
5856 | return retval; |
5857 | } | |
628fe4e4 | 5858 | |
243a9253 | 5859 | void |
313f3b21 | 5860 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 5861 | { |
313f3b21 | 5862 | bpstat *bs; |
628fe4e4 | 5863 | |
0e30163f JK |
5864 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5865 | { | |
5866 | struct breakpoint *b = bs->breakpoint_at; | |
5867 | ||
5868 | if (b == NULL) | |
5869 | continue; | |
5870 | switch (b->type) | |
5871 | { | |
243a9253 | 5872 | case bp_jit_event: |
61c26be8 | 5873 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5874 | break; |
0e30163f | 5875 | case bp_gnu_ifunc_resolver: |
74421c0b | 5876 | gnu_ifunc_resolver_stop ((code_breakpoint *) b); |
0e30163f JK |
5877 | break; |
5878 | case bp_gnu_ifunc_resolver_return: | |
74421c0b | 5879 | gnu_ifunc_resolver_return_stop ((code_breakpoint *) b); |
0e30163f JK |
5880 | break; |
5881 | } | |
5882 | } | |
c906108c SS |
5883 | } |
5884 | ||
4c462cb0 | 5885 | /* See breakpoint.h. */ |
c906108c | 5886 | |
4c462cb0 SM |
5887 | bool |
5888 | bpstat_should_step () | |
c906108c | 5889 | { |
43892fdf | 5890 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5891 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5892 | return true; |
43892fdf | 5893 | |
4c462cb0 | 5894 | return false; |
c906108c SS |
5895 | } |
5896 | ||
4c462cb0 SM |
5897 | /* See breakpoint.h. */ |
5898 | ||
5899 | bool | |
313f3b21 | 5900 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
5901 | { |
5902 | for (; bs != NULL; bs = bs->next) | |
5903 | if (bs->stop) | |
4c462cb0 | 5904 | return true; |
67822962 | 5905 | |
4c462cb0 | 5906 | return false; |
67822962 PA |
5907 | } |
5908 | ||
c906108c | 5909 | \f |
c5aa993b | 5910 | |
6c92c339 | 5911 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
5912 | so it starts at the position corresponding to the table column |
5913 | named COL_NAME in the currently active table of UIOUT. */ | |
5914 | ||
6c92c339 | 5915 | static int |
170b53b2 UW |
5916 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
5917 | { | |
170b53b2 | 5918 | int i, total_width, width, align; |
c5209615 | 5919 | const char *text; |
170b53b2 UW |
5920 | |
5921 | total_width = 0; | |
112e8700 | 5922 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5923 | { |
5924 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 5925 | return total_width; |
170b53b2 UW |
5926 | |
5927 | total_width += width + 1; | |
5928 | } | |
5929 | ||
6c92c339 | 5930 | return 0; |
170b53b2 UW |
5931 | } |
5932 | ||
b775012e LM |
5933 | /* Determine if the locations of this breakpoint will have their conditions |
5934 | evaluated by the target, host or a mix of both. Returns the following: | |
5935 | ||
5936 | "host": Host evals condition. | |
5937 | "host or target": Host or Target evals condition. | |
5938 | "target": Target evals condition. | |
5939 | */ | |
5940 | ||
5941 | static const char * | |
a67bcaba | 5942 | bp_condition_evaluator (const breakpoint *b) |
b775012e | 5943 | { |
b775012e LM |
5944 | char host_evals = 0; |
5945 | char target_evals = 0; | |
5946 | ||
5947 | if (!b) | |
5948 | return NULL; | |
5949 | ||
5950 | if (!is_breakpoint (b)) | |
5951 | return NULL; | |
5952 | ||
5953 | if (gdb_evaluates_breakpoint_condition_p () | |
5954 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5955 | return condition_evaluation_host; | |
5956 | ||
40cb8ca5 | 5957 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5958 | { |
5959 | if (bl->cond_bytecode) | |
5960 | target_evals++; | |
5961 | else | |
5962 | host_evals++; | |
5963 | } | |
5964 | ||
5965 | if (host_evals && target_evals) | |
5966 | return condition_evaluation_both; | |
5967 | else if (target_evals) | |
5968 | return condition_evaluation_target; | |
5969 | else | |
5970 | return condition_evaluation_host; | |
5971 | } | |
5972 | ||
5973 | /* Determine the breakpoint location's condition evaluator. This is | |
5974 | similar to bp_condition_evaluator, but for locations. */ | |
5975 | ||
5976 | static const char * | |
5977 | bp_location_condition_evaluator (struct bp_location *bl) | |
5978 | { | |
5979 | if (bl && !is_breakpoint (bl->owner)) | |
5980 | return NULL; | |
5981 | ||
5982 | if (gdb_evaluates_breakpoint_condition_p () | |
5983 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5984 | return condition_evaluation_host; | |
5985 | ||
5986 | if (bl && bl->cond_bytecode) | |
5987 | return condition_evaluation_target; | |
5988 | else | |
5989 | return condition_evaluation_host; | |
5990 | } | |
5991 | ||
859825b8 JK |
5992 | /* Print the LOC location out of the list of B->LOC locations. */ |
5993 | ||
170b53b2 | 5994 | static void |
a67bcaba | 5995 | print_breakpoint_location (const breakpoint *b, |
170b53b2 | 5996 | struct bp_location *loc) |
0d381245 | 5997 | { |
79a45e25 | 5998 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5999 | |
6000 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 6001 | |
859825b8 JK |
6002 | if (loc != NULL && loc->shlib_disabled) |
6003 | loc = NULL; | |
6004 | ||
6c95b8df PA |
6005 | if (loc != NULL) |
6006 | set_current_program_space (loc->pspace); | |
6007 | ||
56435ebe | 6008 | if (b->display_canonical) |
709438c7 | 6009 | uiout->field_string ("what", b->locspec->to_string ()); |
2f202fde | 6010 | else if (loc && loc->symtab) |
0d381245 | 6011 | { |
4a27f119 KS |
6012 | const struct symbol *sym = loc->symbol; |
6013 | ||
0d381245 VP |
6014 | if (sym) |
6015 | { | |
112e8700 | 6016 | uiout->text ("in "); |
987012b8 | 6017 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 6018 | function_name_style.style ()); |
112e8700 SM |
6019 | uiout->text (" "); |
6020 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6021 | uiout->text ("at "); | |
0d381245 | 6022 | } |
112e8700 | 6023 | uiout->field_string ("file", |
cbe56571 | 6024 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 6025 | file_name_style.style ()); |
112e8700 | 6026 | uiout->text (":"); |
05cba821 | 6027 | |
112e8700 SM |
6028 | if (uiout->is_mi_like_p ()) |
6029 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6030 | |
381befee | 6031 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 6032 | } |
859825b8 | 6033 | else if (loc) |
0d381245 | 6034 | { |
d7e74731 | 6035 | string_file stb; |
170b53b2 | 6036 | |
d7e74731 | 6037 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6038 | demangle, ""); |
112e8700 | 6039 | uiout->field_stream ("at", stb); |
0d381245 | 6040 | } |
859825b8 | 6041 | else |
f00aae0f | 6042 | { |
709438c7 | 6043 | uiout->field_string ("pending", b->locspec->to_string ()); |
f00aae0f KS |
6044 | /* If extra_string is available, it could be holding a condition |
6045 | or dprintf arguments. In either case, make sure it is printed, | |
6046 | too, but only for non-MI streams. */ | |
112e8700 | 6047 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6048 | { |
6049 | if (b->type == bp_dprintf) | |
112e8700 | 6050 | uiout->text (","); |
f00aae0f | 6051 | else |
112e8700 | 6052 | uiout->text (" "); |
6f781ee3 | 6053 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
6054 | } |
6055 | } | |
6c95b8df | 6056 | |
b775012e LM |
6057 | if (loc && is_breakpoint (b) |
6058 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6059 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6060 | { | |
112e8700 SM |
6061 | uiout->text (" ("); |
6062 | uiout->field_string ("evaluated-by", | |
b775012e | 6063 | bp_location_condition_evaluator (loc)); |
112e8700 | 6064 | uiout->text (")"); |
b775012e | 6065 | } |
0d381245 VP |
6066 | } |
6067 | ||
269b11a2 PA |
6068 | static const char * |
6069 | bptype_string (enum bptype type) | |
c906108c | 6070 | { |
c4093a6a JM |
6071 | struct ep_type_description |
6072 | { | |
6073 | enum bptype type; | |
a121b7c1 | 6074 | const char *description; |
c4093a6a JM |
6075 | }; |
6076 | static struct ep_type_description bptypes[] = | |
c906108c | 6077 | { |
c5aa993b JM |
6078 | {bp_none, "?deleted?"}, |
6079 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6080 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6081 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6082 | {bp_until, "until"}, |
6083 | {bp_finish, "finish"}, | |
6084 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6085 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6086 | {bp_read_watchpoint, "read watchpoint"}, |
6087 | {bp_access_watchpoint, "acc watchpoint"}, | |
6088 | {bp_longjmp, "longjmp"}, | |
6089 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6090 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6091 | {bp_exception, "exception"}, |
6092 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6093 | {bp_step_resume, "step resume"}, |
2c03e5be | 6094 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6095 | {bp_watchpoint_scope, "watchpoint scope"}, |
6096 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6097 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6098 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6099 | {bp_thread_event, "thread events"}, |
1900040c | 6100 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6101 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6102 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6103 | {bp_exception_master, "exception master"}, |
ce78b96d | 6104 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6105 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6106 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6107 | {bp_static_tracepoint, "static tracepoint"}, |
7b572efb | 6108 | {bp_static_marker_tracepoint, "static marker tracepoint"}, |
e7e0cddf | 6109 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6110 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6111 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6112 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6113 | }; |
269b11a2 PA |
6114 | |
6115 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6116 | || ((int) type != bptypes[(int) type].type)) | |
6117 | internal_error (__FILE__, __LINE__, | |
6118 | _("bptypes table does not describe type #%d."), | |
6119 | (int) type); | |
6120 | ||
6121 | return bptypes[(int) type].description; | |
6122 | } | |
6123 | ||
998580f1 MK |
6124 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6125 | For CLI, prefix the list with the string 'inf'. */ | |
6126 | ||
6127 | static void | |
6128 | output_thread_groups (struct ui_out *uiout, | |
6129 | const char *field_name, | |
5c632425 | 6130 | const std::vector<int> &inf_nums, |
998580f1 MK |
6131 | int mi_only) |
6132 | { | |
112e8700 | 6133 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6134 | |
6135 | /* For backward compatibility, don't display inferiors in CLI unless | |
6136 | there are several. Always display them for MI. */ | |
6137 | if (!is_mi && mi_only) | |
6138 | return; | |
6139 | ||
10f489e5 | 6140 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6141 | |
5c632425 | 6142 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6143 | { |
6144 | if (is_mi) | |
6145 | { | |
6146 | char mi_group[10]; | |
6147 | ||
5c632425 | 6148 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6149 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6150 | } |
6151 | else | |
6152 | { | |
6153 | if (i == 0) | |
112e8700 | 6154 | uiout->text (" inf "); |
998580f1 | 6155 | else |
112e8700 | 6156 | uiout->text (", "); |
998580f1 | 6157 | |
5c632425 | 6158 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6159 | } |
6160 | } | |
998580f1 MK |
6161 | } |
6162 | ||
9db0d853 SM |
6163 | /* See breakpoint.h. */ |
6164 | ||
6165 | bool fix_breakpoint_script_output_globally = false; | |
6166 | ||
a38118e5 PA |
6167 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6168 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6169 | info breakpoints" show the software breakpoint locations of | |
6170 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6171 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6172 | print_one method did something; false otherwise. */ | |
269b11a2 | 6173 | |
c01e038b | 6174 | static bool |
269b11a2 PA |
6175 | print_one_breakpoint_location (struct breakpoint *b, |
6176 | struct bp_location *loc, | |
6177 | int loc_number, | |
6178 | struct bp_location **last_loc, | |
a38118e5 | 6179 | int allflag, bool raw_loc) |
269b11a2 PA |
6180 | { |
6181 | struct command_line *l; | |
c2c6d25f | 6182 | static char bpenables[] = "nynny"; |
c906108c | 6183 | |
79a45e25 | 6184 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6185 | int header_of_multiple = 0; |
6186 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6187 | struct value_print_options opts; |
6188 | ||
6189 | get_user_print_options (&opts); | |
0d381245 VP |
6190 | |
6191 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6192 | /* See comment in print_one_breakpoint concerning treatment of |
6193 | breakpoints with single disabled location. */ | |
0d381245 VP |
6194 | if (loc == NULL |
6195 | && (b->loc != NULL | |
b5fa468f TBA |
6196 | && (b->loc->next != NULL |
6197 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6198 | header_of_multiple = 1; |
6199 | if (loc == NULL) | |
6200 | loc = b->loc; | |
6201 | ||
c4093a6a JM |
6202 | annotate_record (); |
6203 | ||
6204 | /* 1 */ | |
6205 | annotate_field (0); | |
0d381245 | 6206 | if (part_of_multiple) |
528e1572 | 6207 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6208 | else |
381befee | 6209 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6210 | |
6211 | /* 2 */ | |
6212 | annotate_field (1); | |
0d381245 | 6213 | if (part_of_multiple) |
112e8700 | 6214 | uiout->field_skip ("type"); |
269b11a2 | 6215 | else |
112e8700 | 6216 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6217 | |
6218 | /* 3 */ | |
6219 | annotate_field (2); | |
0d381245 | 6220 | if (part_of_multiple) |
112e8700 | 6221 | uiout->field_skip ("disp"); |
0d381245 | 6222 | else |
112e8700 | 6223 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6224 | |
c4093a6a JM |
6225 | /* 4 */ |
6226 | annotate_field (3); | |
0d381245 | 6227 | if (part_of_multiple) |
fbcda577 PA |
6228 | { |
6229 | /* For locations that are disabled because of an invalid | |
6230 | condition, display "N*" on the CLI, where "*" refers to a | |
6231 | footnote below the table. For MI, simply display a "N" | |
6232 | without a footnote. On the CLI, for enabled locations whose | |
6233 | breakpoint is disabled, display "y-". */ | |
6234 | auto get_enable_state = [uiout, loc] () -> const char * | |
6235 | { | |
6236 | if (uiout->is_mi_like_p ()) | |
6237 | { | |
6238 | if (loc->disabled_by_cond) | |
6239 | return "N"; | |
6240 | else if (!loc->enabled) | |
6241 | return "n"; | |
6242 | else | |
6243 | return "y"; | |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | if (loc->disabled_by_cond) | |
6248 | return "N*"; | |
6249 | else if (!loc->enabled) | |
6250 | return "n"; | |
6251 | else if (!breakpoint_enabled (loc->owner)) | |
6252 | return "y-"; | |
6253 | else | |
6254 | return "y"; | |
6255 | } | |
6256 | }; | |
6257 | uiout->field_string ("enabled", get_enable_state ()); | |
6258 | } | |
0d381245 | 6259 | else |
112e8700 | 6260 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6261 | |
c4093a6a | 6262 | /* 5 and 6 */ |
c01e038b | 6263 | bool result = false; |
c47614fe | 6264 | if (!raw_loc && b->print_one (last_loc)) |
c01e038b | 6265 | result = true; |
3086aeae | 6266 | else |
a38118e5 PA |
6267 | { |
6268 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6269 | { |
6270 | struct watchpoint *w = (struct watchpoint *) b; | |
6271 | ||
6272 | /* Field 4, the address, is omitted (which makes the columns | |
6273 | not line up too nicely with the headers, but the effect | |
6274 | is relatively readable). */ | |
6275 | if (opts.addressprint) | |
112e8700 | 6276 | uiout->field_skip ("addr"); |
3a5c3e22 | 6277 | annotate_field (5); |
a4c50be3 | 6278 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6279 | } |
f06f1252 TT |
6280 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6281 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6282 | { |
6283 | if (opts.addressprint) | |
6284 | { | |
6285 | annotate_field (4); | |
6286 | if (header_of_multiple) | |
7f6aba03 TT |
6287 | uiout->field_string ("addr", "<MULTIPLE>", |
6288 | metadata_style.style ()); | |
a38118e5 | 6289 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6290 | uiout->field_string ("addr", "<PENDING>", |
6291 | metadata_style.style ()); | |
a38118e5 PA |
6292 | else |
6293 | uiout->field_core_addr ("addr", | |
6294 | loc->gdbarch, loc->address); | |
6295 | } | |
6296 | annotate_field (5); | |
6297 | if (!header_of_multiple) | |
6298 | print_breakpoint_location (b, loc); | |
6299 | if (b->loc) | |
6300 | *last_loc = b->loc; | |
6301 | } | |
6302 | } | |
6c95b8df | 6303 | |
998580f1 | 6304 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6305 | { |
5c632425 | 6306 | std::vector<int> inf_nums; |
998580f1 | 6307 | int mi_only = 1; |
6c95b8df | 6308 | |
08036331 | 6309 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6310 | { |
6311 | if (inf->pspace == loc->pspace) | |
5c632425 | 6312 | inf_nums.push_back (inf->num); |
6c95b8df | 6313 | } |
998580f1 | 6314 | |
dda83cd7 | 6315 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6316 | there are several. Always display for MI. */ |
6317 | if (allflag | |
6318 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6319 | && (program_spaces.size () > 1 |
998580f1 MK |
6320 | || number_of_inferiors () > 1) |
6321 | /* LOC is for existing B, it cannot be in | |
6322 | moribund_locations and thus having NULL OWNER. */ | |
6323 | && loc->owner->type != bp_catchpoint)) | |
6324 | mi_only = 0; | |
5c632425 | 6325 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6326 | } |
6327 | ||
4a306c9a | 6328 | if (!part_of_multiple) |
c4093a6a | 6329 | { |
4a306c9a JB |
6330 | if (b->thread != -1) |
6331 | { | |
6332 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6333 | "stop only in" line a little further down. */ |
112e8700 | 6334 | uiout->text (" thread "); |
381befee | 6335 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6336 | } |
6337 | else if (b->task != 0) | |
6338 | { | |
112e8700 | 6339 | uiout->text (" task "); |
381befee | 6340 | uiout->field_signed ("task", b->task); |
4a306c9a | 6341 | } |
c4093a6a | 6342 | } |
f1310107 | 6343 | |
112e8700 | 6344 | uiout->text ("\n"); |
f1310107 | 6345 | |
348d480f | 6346 | if (!part_of_multiple) |
c47614fe | 6347 | b->print_one_detail (uiout); |
f1310107 | 6348 | |
0d381245 | 6349 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6350 | { |
6351 | annotate_field (6); | |
112e8700 | 6352 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6353 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6354 | the frame ID. */ |
112e8700 | 6355 | uiout->field_core_addr ("frame", |
5af949e3 | 6356 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6357 | uiout->text ("\n"); |
c4093a6a JM |
6358 | } |
6359 | ||
28010a5d | 6360 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6361 | { |
6362 | annotate_field (7); | |
d77f58be | 6363 | if (is_tracepoint (b)) |
112e8700 | 6364 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6365 | else |
112e8700 | 6366 | uiout->text ("\tstop only if "); |
6f781ee3 | 6367 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6368 | |
6369 | /* Print whether the target is doing the breakpoint's condition | |
6370 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6371 | if (is_breakpoint (b) | |
6372 | && breakpoint_condition_evaluation_mode () | |
6373 | == condition_evaluation_target) | |
6374 | { | |
6a831f06 PA |
6375 | uiout->message (" (%pF evals)", |
6376 | string_field ("evaluated-by", | |
6377 | bp_condition_evaluator (b))); | |
b775012e | 6378 | } |
112e8700 | 6379 | uiout->text ("\n"); |
0101ce28 JJ |
6380 | } |
6381 | ||
0d381245 | 6382 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6383 | { |
4a64f543 | 6384 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6385 | uiout->text ("\tstop only in thread "); |
6386 | if (uiout->is_mi_like_p ()) | |
381befee | 6387 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6388 | else |
6389 | { | |
6390 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6391 | ||
112e8700 | 6392 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6393 | } |
112e8700 | 6394 | uiout->text ("\n"); |
c4093a6a JM |
6395 | } |
6396 | ||
556ec64d YQ |
6397 | if (!part_of_multiple) |
6398 | { | |
6399 | if (b->hit_count) | |
31f56a27 YQ |
6400 | { |
6401 | /* FIXME should make an annotation for this. */ | |
6402 | if (is_catchpoint (b)) | |
112e8700 | 6403 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6404 | else if (is_tracepoint (b)) |
112e8700 | 6405 | uiout->text ("\ttracepoint"); |
31f56a27 | 6406 | else |
112e8700 SM |
6407 | uiout->text ("\tbreakpoint"); |
6408 | uiout->text (" already hit "); | |
381befee | 6409 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6410 | if (b->hit_count == 1) |
112e8700 | 6411 | uiout->text (" time\n"); |
31f56a27 | 6412 | else |
112e8700 | 6413 | uiout->text (" times\n"); |
31f56a27 | 6414 | } |
556ec64d YQ |
6415 | else |
6416 | { | |
31f56a27 | 6417 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6418 | if (uiout->is_mi_like_p ()) |
381befee | 6419 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6420 | } |
6421 | } | |
8b93c638 | 6422 | |
0d381245 | 6423 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6424 | { |
6425 | annotate_field (8); | |
6a831f06 PA |
6426 | uiout->message ("\tignore next %pF hits\n", |
6427 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6428 | } |
059fb39f | 6429 | |
816338b5 SS |
6430 | /* Note that an enable count of 1 corresponds to "enable once" |
6431 | behavior, which is reported by the combination of enablement and | |
6432 | disposition, so we don't need to mention it here. */ | |
6433 | if (!part_of_multiple && b->enable_count > 1) | |
6434 | { | |
6435 | annotate_field (8); | |
112e8700 | 6436 | uiout->text ("\tdisable after "); |
816338b5 SS |
6437 | /* Tweak the wording to clarify that ignore and enable counts |
6438 | are distinct, and have additive effect. */ | |
6439 | if (b->ignore_count) | |
112e8700 | 6440 | uiout->text ("additional "); |
816338b5 | 6441 | else |
112e8700 | 6442 | uiout->text ("next "); |
381befee | 6443 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6444 | uiout->text (" hits\n"); |
816338b5 SS |
6445 | } |
6446 | ||
f196051f SS |
6447 | if (!part_of_multiple && is_tracepoint (b)) |
6448 | { | |
6449 | struct tracepoint *tp = (struct tracepoint *) b; | |
6450 | ||
6451 | if (tp->traceframe_usage) | |
6452 | { | |
112e8700 | 6453 | uiout->text ("\ttrace buffer usage "); |
381befee | 6454 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6455 | uiout->text (" bytes\n"); |
f196051f SS |
6456 | } |
6457 | } | |
d3ce09f5 | 6458 | |
d1b0a7bf | 6459 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6460 | if (!part_of_multiple && l) |
c4093a6a JM |
6461 | { |
6462 | annotate_field (9); | |
9db0d853 SM |
6463 | |
6464 | bool use_fixed_output = | |
6465 | (uiout->test_flags (fix_breakpoint_script_output) | |
6466 | || fix_breakpoint_script_output_globally); | |
6467 | ||
6468 | gdb::optional<ui_out_emit_tuple> tuple_emitter; | |
6469 | gdb::optional<ui_out_emit_list> list_emitter; | |
6470 | ||
6471 | if (use_fixed_output) | |
6472 | list_emitter.emplace (uiout, "script"); | |
6473 | else | |
6474 | tuple_emitter.emplace (uiout, "script"); | |
6475 | ||
8b93c638 | 6476 | print_command_lines (uiout, l, 4); |
c4093a6a | 6477 | } |
d24317b4 | 6478 | |
d9b3f62e | 6479 | if (is_tracepoint (b)) |
1042e4c0 | 6480 | { |
d9b3f62e PA |
6481 | struct tracepoint *t = (struct tracepoint *) b; |
6482 | ||
6483 | if (!part_of_multiple && t->pass_count) | |
6484 | { | |
6485 | annotate_field (10); | |
112e8700 | 6486 | uiout->text ("\tpass count "); |
381befee | 6487 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6488 | uiout->text (" \n"); |
d9b3f62e | 6489 | } |
f2a8bc8a YQ |
6490 | |
6491 | /* Don't display it when tracepoint or tracepoint location is | |
6492 | pending. */ | |
6493 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6494 | { | |
6495 | annotate_field (11); | |
6496 | ||
112e8700 SM |
6497 | if (uiout->is_mi_like_p ()) |
6498 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6499 | loc->inserted ? "y" : "n"); |
6500 | else | |
6501 | { | |
6502 | if (loc->inserted) | |
112e8700 | 6503 | uiout->text ("\t"); |
f2a8bc8a | 6504 | else |
112e8700 SM |
6505 | uiout->text ("\tnot "); |
6506 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6507 | } |
6508 | } | |
1042e4c0 SS |
6509 | } |
6510 | ||
112e8700 | 6511 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6512 | { |
3a5c3e22 PA |
6513 | if (is_watchpoint (b)) |
6514 | { | |
6515 | struct watchpoint *w = (struct watchpoint *) b; | |
6516 | ||
a4c50be3 | 6517 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6518 | } |
264f9890 PA |
6519 | else if (b->locspec != nullptr) |
6520 | { | |
709438c7 | 6521 | const char *str = b->locspec->to_string (); |
264f9890 PA |
6522 | if (str != nullptr) |
6523 | uiout->field_string ("original-location", str); | |
6524 | } | |
d24317b4 | 6525 | } |
c01e038b TT |
6526 | |
6527 | return result; | |
c4093a6a | 6528 | } |
c5aa993b | 6529 | |
13674803 SM |
6530 | /* See breakpoint.h. */ |
6531 | ||
6532 | bool fix_multi_location_breakpoint_output_globally = false; | |
6533 | ||
0d381245 VP |
6534 | static void |
6535 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6536 | struct bp_location **last_loc, |
6c95b8df | 6537 | int allflag) |
0d381245 | 6538 | { |
79a45e25 | 6539 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6540 | bool use_fixed_output |
6541 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6542 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6543 | |
b4be1b06 | 6544 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6545 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6546 | allflag, false); | |
8d3788bd | 6547 | |
b4be1b06 SM |
6548 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6549 | are outside. */ | |
6550 | if (!use_fixed_output) | |
6551 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6552 | |
6553 | /* If this breakpoint has custom print function, | |
6554 | it's already printed. Otherwise, print individual | |
6555 | locations, if any. */ | |
c01e038b | 6556 | if (!printed || allflag) |
0d381245 | 6557 | { |
4a64f543 MS |
6558 | /* If breakpoint has a single location that is disabled, we |
6559 | print it as if it had several locations, since otherwise it's | |
6560 | hard to represent "breakpoint enabled, location disabled" | |
6561 | situation. | |
6562 | ||
6563 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6564 | internally, that's not a property exposed to users. |
6565 | ||
6566 | Likewise, while catchpoints may be implemented with | |
6567 | breakpoints (e.g., catch throw), that's not a property | |
6568 | exposed to users. We do however display the internal | |
6569 | breakpoint locations with "maint info breakpoints". */ | |
6570 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6571 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6572 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6573 | && (allflag |
b5fa468f TBA |
6574 | || (b->loc && (b->loc->next |
6575 | || !b->loc->enabled | |
6576 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6577 | { |
b4be1b06 SM |
6578 | gdb::optional<ui_out_emit_list> locations_list; |
6579 | ||
6580 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6581 | MI record. For later versions, place breakpoint locations in a | |
6582 | list. */ | |
6583 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6584 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6585 | |
b4be1b06 | 6586 | int n = 1; |
40cb8ca5 | 6587 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6588 | { |
b4be1b06 | 6589 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6590 | print_one_breakpoint_location (b, loc, n, last_loc, |
6591 | allflag, allflag); | |
40cb8ca5 | 6592 | n++; |
8d3788bd | 6593 | } |
0d381245 VP |
6594 | } |
6595 | } | |
6596 | } | |
6597 | ||
a6d9a66e UW |
6598 | static int |
6599 | breakpoint_address_bits (struct breakpoint *b) | |
6600 | { | |
6601 | int print_address_bits = 0; | |
a6d9a66e | 6602 | |
40cb8ca5 | 6603 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6604 | { |
6e14e441 PA |
6605 | if (!bl_address_is_meaningful (loc)) |
6606 | continue; | |
c7437ca6 | 6607 | |
6e14e441 | 6608 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6609 | if (addr_bit > print_address_bits) |
6610 | print_address_bits = addr_bit; | |
6611 | } | |
6612 | ||
6613 | return print_address_bits; | |
6614 | } | |
0d381245 | 6615 | |
65630365 | 6616 | /* See breakpoint.h. */ |
c5aa993b | 6617 | |
65630365 PA |
6618 | void |
6619 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6620 | { |
a6d9a66e | 6621 | struct bp_location *dummy_loc = NULL; |
65630365 | 6622 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6623 | } |
c5aa993b | 6624 | |
09d682a4 TT |
6625 | /* Return true if this breakpoint was set by the user, false if it is |
6626 | internal or momentary. */ | |
6627 | ||
6628 | int | |
6629 | user_breakpoint_p (struct breakpoint *b) | |
6630 | { | |
46c6471b | 6631 | return b->number > 0; |
09d682a4 TT |
6632 | } |
6633 | ||
93daf339 TT |
6634 | /* See breakpoint.h. */ |
6635 | ||
6636 | int | |
6637 | pending_breakpoint_p (struct breakpoint *b) | |
6638 | { | |
6639 | return b->loc == NULL; | |
6640 | } | |
6641 | ||
5c458ae8 SM |
6642 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6643 | ||
6644 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6645 | understood by number_or_range_parser. Only breakpoints included in this | |
6646 | list are then printed. | |
6647 | ||
6648 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6649 | ||
6650 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6651 | ones for which it returns true. | |
6652 | ||
6653 | Return the total number of breakpoints listed. */ | |
c906108c | 6654 | |
d77f58be | 6655 | static int |
5c458ae8 | 6656 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6657 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6658 | { |
a6d9a66e | 6659 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6660 | int nr_printable_breakpoints; |
79a45b7d | 6661 | struct value_print_options opts; |
a6d9a66e | 6662 | int print_address_bits = 0; |
269b11a2 | 6663 | int print_type_col_width = 14; |
79a45e25 | 6664 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6665 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6666 | |
79a45b7d TT |
6667 | get_user_print_options (&opts); |
6668 | ||
4a64f543 MS |
6669 | /* Compute the number of rows in the table, as well as the size |
6670 | required for address fields. */ | |
7f3b0473 | 6671 | nr_printable_breakpoints = 0; |
43892fdf | 6672 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6673 | { |
6674 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6675 | if (filter && !filter (b)) | |
6676 | continue; | |
6677 | ||
5c458ae8 | 6678 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6679 | accept. Skip the others. */ |
5c458ae8 | 6680 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6681 | { |
5c458ae8 | 6682 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6683 | continue; |
5c458ae8 | 6684 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6685 | continue; |
6686 | } | |
269b11a2 | 6687 | |
5c458ae8 | 6688 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6689 | { |
6690 | int addr_bit, type_len; | |
a6d9a66e | 6691 | |
e5a67952 MS |
6692 | addr_bit = breakpoint_address_bits (b); |
6693 | if (addr_bit > print_address_bits) | |
6694 | print_address_bits = addr_bit; | |
269b11a2 | 6695 | |
e5a67952 MS |
6696 | type_len = strlen (bptype_string (b->type)); |
6697 | if (type_len > print_type_col_width) | |
6698 | print_type_col_width = type_len; | |
6699 | ||
6700 | nr_printable_breakpoints++; | |
6701 | } | |
6702 | } | |
7f3b0473 | 6703 | |
4a2b031d TT |
6704 | { |
6705 | ui_out_emit_table table_emitter (uiout, | |
6706 | opts.addressprint ? 6 : 5, | |
6707 | nr_printable_breakpoints, | |
6708 | "BreakpointTable"); | |
6709 | ||
6710 | if (nr_printable_breakpoints > 0) | |
6711 | annotate_breakpoints_headers (); | |
6712 | if (nr_printable_breakpoints > 0) | |
6713 | annotate_field (0); | |
6714 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6715 | if (nr_printable_breakpoints > 0) | |
6716 | annotate_field (1); | |
6717 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6718 | if (nr_printable_breakpoints > 0) | |
6719 | annotate_field (2); | |
6720 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6721 | if (nr_printable_breakpoints > 0) | |
6722 | annotate_field (3); | |
6723 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6724 | if (opts.addressprint) | |
6725 | { | |
6726 | if (nr_printable_breakpoints > 0) | |
6727 | annotate_field (4); | |
6728 | if (print_address_bits <= 32) | |
6729 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6730 | else | |
6731 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6732 | } | |
6733 | if (nr_printable_breakpoints > 0) | |
6734 | annotate_field (5); | |
6735 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6736 | uiout->table_body (); | |
6737 | if (nr_printable_breakpoints > 0) | |
6738 | annotate_breakpoints_table (); | |
6739 | ||
43892fdf | 6740 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6741 | { |
6742 | QUIT; | |
6743 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6744 | if (filter && !filter (b)) | |
6745 | continue; | |
e5a67952 | 6746 | |
5c458ae8 | 6747 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6748 | accept. Skip the others. */ |
e5a67952 | 6749 | |
5c458ae8 | 6750 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6751 | { |
5c458ae8 | 6752 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6753 | { |
5c458ae8 | 6754 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6755 | continue; |
6756 | } | |
6757 | else /* all others */ | |
6758 | { | |
5c458ae8 | 6759 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6760 | continue; |
6761 | } | |
6762 | } | |
6763 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6764 | show_internal is set. */ |
6765 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6766 | { |
6767 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6768 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6769 | if (loc->disabled_by_cond) |
6770 | has_disabled_by_cond_location = true; | |
6771 | } | |
4a2b031d TT |
6772 | } |
6773 | } | |
698384cd | 6774 | |
7f3b0473 | 6775 | if (nr_printable_breakpoints == 0) |
c906108c | 6776 | { |
4a64f543 MS |
6777 | /* If there's a filter, let the caller decide how to report |
6778 | empty list. */ | |
d77f58be SS |
6779 | if (!filter) |
6780 | { | |
5c458ae8 | 6781 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6782 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6783 | else |
112e8700 | 6784 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6785 | bp_num_list); |
d77f58be | 6786 | } |
c906108c SS |
6787 | } |
6788 | else | |
c4093a6a | 6789 | { |
a6d9a66e UW |
6790 | if (last_loc && !server_command) |
6791 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6792 | |
85c88e2a | 6793 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6794 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6795 | "location.\n")); | |
c4093a6a | 6796 | } |
c906108c | 6797 | |
4a64f543 | 6798 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6799 | there have been breakpoints? */ |
c906108c | 6800 | annotate_breakpoints_table_end (); |
d77f58be SS |
6801 | |
6802 | return nr_printable_breakpoints; | |
c906108c SS |
6803 | } |
6804 | ||
ad443146 SS |
6805 | /* Display the value of default-collect in a way that is generally |
6806 | compatible with the breakpoint list. */ | |
6807 | ||
6808 | static void | |
6809 | default_collect_info (void) | |
6810 | { | |
79a45e25 PA |
6811 | struct ui_out *uiout = current_uiout; |
6812 | ||
ad443146 SS |
6813 | /* If it has no value (which is frequently the case), say nothing; a |
6814 | message like "No default-collect." gets in user's face when it's | |
6815 | not wanted. */ | |
e0700ba4 | 6816 | if (default_collect.empty ()) |
ad443146 SS |
6817 | return; |
6818 | ||
6819 | /* The following phrase lines up nicely with per-tracepoint collect | |
6820 | actions. */ | |
112e8700 SM |
6821 | uiout->text ("default collect "); |
6822 | uiout->field_string ("default-collect", default_collect); | |
6823 | uiout->text (" \n"); | |
ad443146 SS |
6824 | } |
6825 | ||
c906108c | 6826 | static void |
0b39b52e | 6827 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6828 | { |
5c458ae8 | 6829 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6830 | |
6831 | default_collect_info (); | |
d77f58be SS |
6832 | } |
6833 | ||
6834 | static void | |
1d12d88f | 6835 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6836 | { |
5c458ae8 | 6837 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6838 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6839 | |
6840 | if (num_printed == 0) | |
6841 | { | |
e5a67952 | 6842 | if (args == NULL || *args == '\0') |
112e8700 | 6843 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6844 | else |
112e8700 | 6845 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6846 | } |
c906108c SS |
6847 | } |
6848 | ||
7a292a7a | 6849 | static void |
4495129a | 6850 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6851 | { |
5c458ae8 | 6852 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6853 | |
6854 | default_collect_info (); | |
c906108c SS |
6855 | } |
6856 | ||
0d381245 | 6857 | static int |
714835d5 | 6858 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6859 | struct program_space *pspace, |
714835d5 | 6860 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6861 | { |
40cb8ca5 | 6862 | for (bp_location *bl : b->locations ()) |
0d381245 | 6863 | { |
6c95b8df PA |
6864 | if (bl->pspace == pspace |
6865 | && bl->address == pc | |
0d381245 VP |
6866 | && (!overlay_debugging || bl->section == section)) |
6867 | return 1; | |
6868 | } | |
6869 | return 0; | |
6870 | } | |
6871 | ||
bd21b6c9 | 6872 | /* See breakpoint.h. */ |
c906108c | 6873 | |
bd21b6c9 | 6874 | void |
6c95b8df PA |
6875 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6876 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6877 | struct obj_section *section, int thread) |
c906108c | 6878 | { |
52f0bd74 | 6879 | int others = 0; |
c906108c | 6880 | |
43892fdf | 6881 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6882 | others += (user_breakpoint_p (b) |
dda83cd7 | 6883 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6884 | |
c906108c SS |
6885 | if (others > 0) |
6886 | { | |
a3f17187 | 6887 | if (others == 1) |
6cb06a8c | 6888 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 6889 | else /* if (others == ???) */ |
6cb06a8c | 6890 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 6891 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6892 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6893 | { |
6894 | others--; | |
6cb06a8c | 6895 | gdb_printf ("%d", b->number); |
0d381245 | 6896 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 6897 | gdb_printf (" (all threads)"); |
0d381245 | 6898 | else if (b->thread != -1) |
6cb06a8c TT |
6899 | gdb_printf (" (thread %d)", b->thread); |
6900 | gdb_printf ("%s%s ", | |
6901 | ((b->enable_state == bp_disabled | |
6902 | || b->enable_state == bp_call_disabled) | |
6903 | ? " (disabled)" | |
6904 | : ""), | |
6905 | (others > 1) ? "," | |
6906 | : ((others == 1) ? " and" : "")); | |
0d381245 | 6907 | } |
6a831f06 PA |
6908 | current_uiout->message (_("also set at pc %ps.\n"), |
6909 | styled_string (address_style.style (), | |
6910 | paddress (gdbarch, pc))); | |
c906108c SS |
6911 | } |
6912 | } | |
6913 | \f | |
c906108c | 6914 | |
cb1e4e32 PA |
6915 | /* Return true iff it is meaningful to use the address member of LOC. |
6916 | For some breakpoint types, the locations' address members are | |
6917 | irrelevant and it makes no sense to attempt to compare them to | |
6918 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6919 | |
cb1e4e32 PA |
6920 | More specifically, software watchpoints and catchpoints that are |
6921 | not backed by breakpoints always have a zero valued location | |
6922 | address and we don't want to mark breakpoints of any of these types | |
6923 | to be a duplicate of an actual breakpoint location at address | |
6924 | zero. */ | |
e4f237da | 6925 | |
cb1e4e32 PA |
6926 | static bool |
6927 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6928 | { |
cb1e4e32 | 6929 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6930 | } |
6931 | ||
6932 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6933 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6934 | ||
6935 | static int | |
4a64f543 MS |
6936 | watchpoint_locations_match (struct bp_location *loc1, |
6937 | struct bp_location *loc2) | |
2d134ed3 | 6938 | { |
3a5c3e22 PA |
6939 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6940 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6941 | ||
6942 | /* Both of them must exist. */ | |
6943 | gdb_assert (w1 != NULL); | |
6944 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6945 | |
4a64f543 MS |
6946 | /* If the target can evaluate the condition expression in hardware, |
6947 | then we we need to insert both watchpoints even if they are at | |
6948 | the same place. Otherwise the watchpoint will only trigger when | |
6949 | the condition of whichever watchpoint was inserted evaluates to | |
6950 | true, not giving a chance for GDB to check the condition of the | |
6951 | other watchpoint. */ | |
3a5c3e22 | 6952 | if ((w1->cond_exp |
4a64f543 MS |
6953 | && target_can_accel_watchpoint_condition (loc1->address, |
6954 | loc1->length, | |
0cf6dd15 | 6955 | loc1->watchpoint_type, |
4d01a485 | 6956 | w1->cond_exp.get ())) |
3a5c3e22 | 6957 | || (w2->cond_exp |
4a64f543 MS |
6958 | && target_can_accel_watchpoint_condition (loc2->address, |
6959 | loc2->length, | |
0cf6dd15 | 6960 | loc2->watchpoint_type, |
4d01a485 | 6961 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6962 | return 0; |
6963 | ||
85d721b8 PA |
6964 | /* Note that this checks the owner's type, not the location's. In |
6965 | case the target does not support read watchpoints, but does | |
6966 | support access watchpoints, we'll have bp_read_watchpoint | |
6967 | watchpoints with hw_access locations. Those should be considered | |
6968 | duplicates of hw_read locations. The hw_read locations will | |
6969 | become hw_access locations later. */ | |
2d134ed3 PA |
6970 | return (loc1->owner->type == loc2->owner->type |
6971 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6972 | && loc1->address == loc2->address | |
6973 | && loc1->length == loc2->length); | |
e4f237da KB |
6974 | } |
6975 | ||
31e77af2 | 6976 | /* See breakpoint.h. */ |
6c95b8df | 6977 | |
31e77af2 | 6978 | int |
accd0bcd YQ |
6979 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6980 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6981 | { |
f5656ead | 6982 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6983 | || aspace1 == aspace2) |
6984 | && addr1 == addr2); | |
6985 | } | |
6986 | ||
f1310107 TJB |
6987 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6988 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6989 | matches ASPACE2. On targets that have global breakpoints, the address | |
6990 | space doesn't really matter. */ | |
6991 | ||
6992 | static int | |
accd0bcd YQ |
6993 | breakpoint_address_match_range (const address_space *aspace1, |
6994 | CORE_ADDR addr1, | |
6995 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6996 | CORE_ADDR addr2) |
6997 | { | |
f5656ead | 6998 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6999 | || aspace1 == aspace2) |
7000 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7001 | } | |
7002 | ||
7003 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7004 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7005 | matches the breakpoint's address space. On targets that have global | |
7006 | breakpoints, the address space doesn't really matter. */ | |
7007 | ||
7008 | static int | |
7009 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 7010 | const address_space *aspace, |
f1310107 TJB |
7011 | CORE_ADDR addr) |
7012 | { | |
7013 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7014 | aspace, addr) | |
7015 | || (bl->length | |
7016 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7017 | bl->address, bl->length, | |
7018 | aspace, addr))); | |
7019 | } | |
7020 | ||
d35ae833 PA |
7021 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
7022 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
7023 | match happens only if ASPACE matches the breakpoint's address | |
7024 | space. On targets that have global breakpoints, the address space | |
7025 | doesn't really matter. */ | |
7026 | ||
7027 | static int | |
7028 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 7029 | const address_space *aspace, |
d35ae833 PA |
7030 | CORE_ADDR addr, int len) |
7031 | { | |
7032 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7033 | || bl->pspace->aspace == aspace) | |
7034 | { | |
7035 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7036 | ||
7037 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7038 | return 1; | |
7039 | } | |
7040 | return 0; | |
7041 | } | |
7042 | ||
1e4d1764 YQ |
7043 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7044 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7045 | true, otherwise returns false. */ | |
7046 | ||
7047 | static int | |
7048 | tracepoint_locations_match (struct bp_location *loc1, | |
7049 | struct bp_location *loc2) | |
7050 | { | |
7051 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7052 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7053 | locations at the same address of different tracepoints are regarded as | |
7054 | different locations. */ | |
7055 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7056 | else | |
7057 | return 0; | |
7058 | } | |
7059 | ||
2d134ed3 | 7060 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 7061 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
7062 | the same location. If SW_HW_BPS_MATCH is true, then software |
7063 | breakpoint locations and hardware breakpoint locations match, | |
7064 | otherwise they don't. */ | |
2d134ed3 PA |
7065 | |
7066 | static int | |
7f32a4d5 PA |
7067 | breakpoint_locations_match (struct bp_location *loc1, |
7068 | struct bp_location *loc2, | |
7069 | bool sw_hw_bps_match) | |
2d134ed3 | 7070 | { |
2bdf28a0 JK |
7071 | int hw_point1, hw_point2; |
7072 | ||
7073 | /* Both of them must not be in moribund_locations. */ | |
7074 | gdb_assert (loc1->owner != NULL); | |
7075 | gdb_assert (loc2->owner != NULL); | |
7076 | ||
7077 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7078 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7079 | |
7080 | if (hw_point1 != hw_point2) | |
7081 | return 0; | |
7082 | else if (hw_point1) | |
7083 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7084 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7085 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7086 | else |
7f32a4d5 PA |
7087 | /* We compare bp_location.length in order to cover ranged |
7088 | breakpoints. Keep this in sync with | |
7089 | bp_location_is_less_than. */ | |
f1310107 TJB |
7090 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
7091 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 7092 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 7093 | && loc1->length == loc2->length); |
2d134ed3 PA |
7094 | } |
7095 | ||
76897487 KB |
7096 | static void |
7097 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 7098 | int bnum, int have_bnum) |
76897487 | 7099 | { |
f63fbe86 MS |
7100 | /* The longest string possibly returned by hex_string_custom |
7101 | is 50 chars. These must be at least that big for safety. */ | |
7102 | char astr1[64]; | |
7103 | char astr2[64]; | |
76897487 | 7104 | |
bb599908 PH |
7105 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7106 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7107 | if (have_bnum) |
8a3fe4f8 | 7108 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 7109 | bnum, astr1, astr2); |
76897487 | 7110 | else |
8a3fe4f8 | 7111 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7112 | } |
7113 | ||
4a64f543 MS |
7114 | /* Adjust a breakpoint's address to account for architectural |
7115 | constraints on breakpoint placement. Return the adjusted address. | |
7116 | Note: Very few targets require this kind of adjustment. For most | |
7117 | targets, this function is simply the identity function. */ | |
76897487 KB |
7118 | |
7119 | static CORE_ADDR | |
a6d9a66e | 7120 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
60270718 AB |
7121 | CORE_ADDR bpaddr, enum bptype bptype, |
7122 | struct program_space *pspace) | |
76897487 | 7123 | { |
60270718 AB |
7124 | gdb_assert (pspace != nullptr); |
7125 | ||
a0de8c21 YQ |
7126 | if (bptype == bp_watchpoint |
7127 | || bptype == bp_hardware_watchpoint | |
7128 | || bptype == bp_read_watchpoint | |
7129 | || bptype == bp_access_watchpoint | |
7130 | || bptype == bp_catchpoint) | |
88f7da05 KB |
7131 | { |
7132 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 7133 | have their addresses modified. */ |
88f7da05 KB |
7134 | return bpaddr; |
7135 | } | |
7c16b83e PA |
7136 | else if (bptype == bp_single_step) |
7137 | { | |
7138 | /* Single-step breakpoints should not have their addresses | |
7139 | modified. If there's any architectural constrain that | |
7140 | applies to this address, then it should have already been | |
7141 | taken into account when the breakpoint was created in the | |
7142 | first place. If we didn't do this, stepping through e.g., | |
7143 | Thumb-2 IT blocks would break. */ | |
7144 | return bpaddr; | |
7145 | } | |
76897487 KB |
7146 | else |
7147 | { | |
a0de8c21 YQ |
7148 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7149 | ||
60270718 AB |
7150 | /* Some targets have architectural constraints on the placement |
7151 | of breakpoint instructions. Obtain the adjusted address. */ | |
a0de8c21 YQ |
7152 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) |
7153 | { | |
60270718 AB |
7154 | /* Targets that implement this adjustment function will likely |
7155 | inspect either the symbol table, target memory at BPADDR, or | |
7156 | even state registers, so ensure a suitable thread (and its | |
7157 | associated program space) are currently selected. */ | |
7158 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
7159 | switch_to_program_space_and_thread (pspace); | |
7160 | adjusted_bpaddr | |
7161 | = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
a0de8c21 | 7162 | } |
76897487 | 7163 | |
a0de8c21 | 7164 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7165 | |
7166 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7167 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7168 | is required. */ |
7169 | if (adjusted_bpaddr != bpaddr) | |
7170 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7171 | ||
7172 | return adjusted_bpaddr; | |
7173 | } | |
7174 | } | |
7175 | ||
cb1e4e32 PA |
7176 | static bp_loc_type |
7177 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7178 | { |
cb1e4e32 | 7179 | switch (type) |
e049a4b5 DJ |
7180 | { |
7181 | case bp_breakpoint: | |
7c16b83e | 7182 | case bp_single_step: |
e049a4b5 DJ |
7183 | case bp_until: |
7184 | case bp_finish: | |
7185 | case bp_longjmp: | |
7186 | case bp_longjmp_resume: | |
e2e4d78b | 7187 | case bp_longjmp_call_dummy: |
186c406b TT |
7188 | case bp_exception: |
7189 | case bp_exception_resume: | |
e049a4b5 | 7190 | case bp_step_resume: |
2c03e5be | 7191 | case bp_hp_step_resume: |
e049a4b5 DJ |
7192 | case bp_watchpoint_scope: |
7193 | case bp_call_dummy: | |
aa7d318d | 7194 | case bp_std_terminate: |
e049a4b5 DJ |
7195 | case bp_shlib_event: |
7196 | case bp_thread_event: | |
7197 | case bp_overlay_event: | |
4efc6507 | 7198 | case bp_jit_event: |
0fd8e87f | 7199 | case bp_longjmp_master: |
aa7d318d | 7200 | case bp_std_terminate_master: |
186c406b | 7201 | case bp_exception_master: |
0e30163f JK |
7202 | case bp_gnu_ifunc_resolver: |
7203 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7204 | case bp_dprintf: |
cb1e4e32 | 7205 | return bp_loc_software_breakpoint; |
e049a4b5 | 7206 | case bp_hardware_breakpoint: |
cb1e4e32 | 7207 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7208 | case bp_hardware_watchpoint: |
7209 | case bp_read_watchpoint: | |
7210 | case bp_access_watchpoint: | |
cb1e4e32 | 7211 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7212 | case bp_watchpoint: |
6e14e441 | 7213 | return bp_loc_software_watchpoint; |
ce78b96d | 7214 | case bp_catchpoint: |
15c3d785 PA |
7215 | case bp_tracepoint: |
7216 | case bp_fast_tracepoint: | |
0fb4aa4b | 7217 | case bp_static_tracepoint: |
7b572efb | 7218 | case bp_static_marker_tracepoint: |
cb1e4e32 | 7219 | return bp_loc_other; |
e049a4b5 | 7220 | default: |
e2e0b3e5 | 7221 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7222 | } |
cb1e4e32 PA |
7223 | } |
7224 | ||
7225 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7226 | { | |
7227 | this->owner = owner; | |
7228 | this->cond_bytecode = NULL; | |
7229 | this->shlib_disabled = 0; | |
7230 | this->enabled = 1; | |
b5fa468f | 7231 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7232 | |
7233 | this->loc_type = type; | |
e049a4b5 | 7234 | |
cb1e4e32 PA |
7235 | if (this->loc_type == bp_loc_software_breakpoint |
7236 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7237 | mark_breakpoint_location_modified (this); | |
7238 | ||
b6433ede | 7239 | incref (); |
cb1e4e32 PA |
7240 | } |
7241 | ||
7242 | bp_location::bp_location (breakpoint *owner) | |
7243 | : bp_location::bp_location (owner, | |
7244 | bp_location_from_bp_type (owner->type)) | |
7245 | { | |
28010a5d PA |
7246 | } |
7247 | ||
f431efe5 PA |
7248 | /* Decrement reference count. If the reference count reaches 0, |
7249 | destroy the bp_location. Sets *BLP to NULL. */ | |
7250 | ||
7251 | static void | |
7252 | decref_bp_location (struct bp_location **blp) | |
7253 | { | |
b6433ede | 7254 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7255 | *blp = NULL; |
7256 | } | |
7257 | ||
346774a9 | 7258 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7259 | |
b270e6f9 TT |
7260 | static breakpoint * |
7261 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7262 | { |
346774a9 | 7263 | struct breakpoint *b1; |
b270e6f9 | 7264 | struct breakpoint *result = b.get (); |
c906108c | 7265 | |
346774a9 PA |
7266 | /* Add this breakpoint to the end of the chain so that a list of |
7267 | breakpoints will come out in order of increasing numbers. */ | |
7268 | ||
7269 | b1 = breakpoint_chain; | |
7270 | if (b1 == 0) | |
b270e6f9 | 7271 | breakpoint_chain = b.release (); |
346774a9 PA |
7272 | else |
7273 | { | |
7274 | while (b1->next) | |
7275 | b1 = b1->next; | |
b270e6f9 | 7276 | b1->next = b.release (); |
346774a9 | 7277 | } |
b270e6f9 TT |
7278 | |
7279 | return result; | |
346774a9 PA |
7280 | } |
7281 | ||
0ba852ab | 7282 | /* Initialize loc->function_name. */ |
0e30163f | 7283 | |
0d381245 | 7284 | static void |
0ba852ab | 7285 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7286 | { |
2bdf28a0 JK |
7287 | gdb_assert (loc->owner != NULL); |
7288 | ||
0d381245 | 7289 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7290 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7291 | || is_tracepoint (loc->owner)) |
0d381245 | 7292 | { |
2c02bd72 | 7293 | const char *function_name; |
0e30163f | 7294 | |
3467ec66 | 7295 | if (loc->msymbol != NULL |
60f62e2b SM |
7296 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7297 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7298 | { |
7299 | struct breakpoint *b = loc->owner; | |
7300 | ||
c9d95fa3 | 7301 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7302 | |
7303 | if (b->type == bp_breakpoint && b->loc == loc | |
7304 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7305 | { |
7306 | /* Create only the whole new breakpoint of this type but do not | |
7307 | mess more complicated breakpoints with multiple locations. */ | |
7308 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7309 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7310 | breakpoint. */ |
3467ec66 | 7311 | loc->related_address = loc->address; |
0e30163f JK |
7312 | } |
7313 | } | |
3467ec66 PA |
7314 | else |
7315 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7316 | |
2c02bd72 | 7317 | if (function_name) |
23d6ee64 | 7318 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7319 | } |
7320 | } | |
7321 | ||
a6d9a66e | 7322 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7323 | struct gdbarch * |
a6d9a66e UW |
7324 | get_sal_arch (struct symtab_and_line sal) |
7325 | { | |
7326 | if (sal.section) | |
08feed99 | 7327 | return sal.section->objfile->arch (); |
a6d9a66e | 7328 | if (sal.symtab) |
3c86fae3 | 7329 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7330 | |
7331 | return NULL; | |
7332 | } | |
7333 | ||
53a5351d | 7334 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7335 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7336 | initiated the operation. */ | |
c906108c SS |
7337 | |
7338 | void | |
186c406b | 7339 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7340 | { |
5d5658a1 | 7341 | int thread = tp->global_num; |
0fd8e87f UW |
7342 | |
7343 | /* To avoid having to rescan all objfile symbols at every step, | |
7344 | we maintain a list of continually-inserted but always disabled | |
7345 | longjmp "master" breakpoints. Here, we simply create momentary | |
7346 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7347 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7348 | if (b->pspace == current_program_space |
186c406b TT |
7349 | && (b->type == bp_longjmp_master |
7350 | || b->type == bp_exception_master)) | |
0fd8e87f | 7351 | { |
06edf0c0 | 7352 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
e2e4d78b JK |
7353 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7354 | after their removal. */ | |
7ab97995 | 7355 | momentary_breakpoint_from_master (b, type, 1, thread); |
0fd8e87f | 7356 | } |
186c406b TT |
7357 | |
7358 | tp->initiating_frame = frame; | |
c906108c SS |
7359 | } |
7360 | ||
611c83ae | 7361 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7362 | void |
611c83ae | 7363 | delete_longjmp_breakpoint (int thread) |
c906108c | 7364 | { |
1428b37a | 7365 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7366 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7367 | { |
7368 | if (b->thread == thread) | |
7369 | delete_breakpoint (b); | |
7370 | } | |
c906108c SS |
7371 | } |
7372 | ||
f59f708a PA |
7373 | void |
7374 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7375 | { | |
1428b37a | 7376 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7377 | if (b->type == bp_longjmp || b->type == bp_exception) |
7378 | { | |
7379 | if (b->thread == thread) | |
7380 | b->disposition = disp_del_at_next_stop; | |
7381 | } | |
7382 | } | |
7383 | ||
e2e4d78b JK |
7384 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7385 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7386 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7387 | breakpoints. */ | |
7388 | ||
7389 | struct breakpoint * | |
7390 | set_longjmp_breakpoint_for_call_dummy (void) | |
7391 | { | |
43892fdf | 7392 | breakpoint *retval = nullptr; |
e2e4d78b | 7393 | |
43892fdf | 7394 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7395 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7396 | { | |
7ab97995 PA |
7397 | int thread = inferior_thread ()->global_num; |
7398 | breakpoint *new_b | |
7399 | = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7400 | 1, thread); | |
e2e4d78b JK |
7401 | |
7402 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7403 | ||
7404 | gdb_assert (new_b->related_breakpoint == new_b); | |
7405 | if (retval == NULL) | |
7406 | retval = new_b; | |
7407 | new_b->related_breakpoint = retval; | |
7408 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7409 | retval = retval->related_breakpoint; | |
7410 | retval->related_breakpoint = new_b; | |
7411 | } | |
7412 | ||
7413 | return retval; | |
7414 | } | |
7415 | ||
7416 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7417 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7418 | stack. |
7419 | ||
b4b3e2de AB |
7420 | If the unwind fails then there is not sufficient information to discard |
7421 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7422 | be cleaned up next time this function is called from a location where | |
7423 | unwinding is possible. */ | |
e2e4d78b JK |
7424 | |
7425 | void | |
b67a2c6f | 7426 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7427 | { |
7428 | struct breakpoint *b, *b_tmp; | |
7429 | ||
7430 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7431 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7432 | { |
7433 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7434 | ||
b4b3e2de AB |
7435 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7436 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7437 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7438 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7439 | |
7440 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7441 | more to do. Or, if the dummy frame associated with the | |
7442 | bp_call_dummy is still on the stack then we need to leave this | |
7443 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7444 | if (dummy_b->type != bp_call_dummy |
7445 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7446 | continue; | |
b4b3e2de AB |
7447 | |
7448 | /* We didn't find the dummy frame on the stack, this could be | |
7449 | because we have longjmp'd to a stack frame that is previous to | |
7450 | the dummy frame, or it could be because the stack unwind is | |
7451 | broken at some point between the longjmp frame and the dummy | |
7452 | frame. | |
7453 | ||
7454 | Next we figure out why the stack unwind stopped. If it looks | |
7455 | like the unwind is complete then we assume the dummy frame has | |
7456 | been jumped over, however, if the unwind stopped for an | |
7457 | unexpected reason then we assume the stack unwind is currently | |
7458 | broken, and that we will (eventually) return to the dummy | |
7459 | frame. | |
7460 | ||
7461 | It might be tempting to consider using frame_id_inner here, but | |
7462 | that is not safe. There is no guarantee that the stack frames | |
7463 | we are looking at here are even on the same stack as the | |
7464 | original dummy frame, hence frame_id_inner can't be used. See | |
7465 | the comments on frame_id_inner for more details. */ | |
7466 | bool unwind_finished_unexpectedly = false; | |
7467 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7468 | { | |
7469 | struct frame_info *prev = get_prev_frame (fi); | |
7470 | if (prev == nullptr) | |
7471 | { | |
7472 | /* FI is the last stack frame. Why did this frame not | |
7473 | unwind further? */ | |
7474 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7475 | if (stop_reason != UNWIND_NO_REASON | |
7476 | && stop_reason != UNWIND_OUTERMOST) | |
7477 | unwind_finished_unexpectedly = true; | |
7478 | } | |
7479 | fi = prev; | |
7480 | } | |
7481 | if (unwind_finished_unexpectedly) | |
7482 | continue; | |
7483 | ||
00431a78 | 7484 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7485 | |
7486 | while (b->related_breakpoint != b) | |
7487 | { | |
7488 | if (b_tmp == b->related_breakpoint) | |
7489 | b_tmp = b->related_breakpoint->next; | |
7490 | delete_breakpoint (b->related_breakpoint); | |
7491 | } | |
7492 | delete_breakpoint (b); | |
7493 | } | |
7494 | } | |
7495 | ||
1900040c MS |
7496 | void |
7497 | enable_overlay_breakpoints (void) | |
7498 | { | |
43892fdf | 7499 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7500 | if (b->type == bp_overlay_event) |
01add95b SM |
7501 | { |
7502 | b->enable_state = bp_enabled; | |
7503 | update_global_location_list (UGLL_MAY_INSERT); | |
7504 | overlay_events_enabled = 1; | |
7505 | } | |
1900040c MS |
7506 | } |
7507 | ||
7508 | void | |
7509 | disable_overlay_breakpoints (void) | |
7510 | { | |
43892fdf | 7511 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7512 | if (b->type == bp_overlay_event) |
01add95b SM |
7513 | { |
7514 | b->enable_state = bp_disabled; | |
7515 | update_global_location_list (UGLL_DONT_INSERT); | |
7516 | overlay_events_enabled = 0; | |
7517 | } | |
1900040c MS |
7518 | } |
7519 | ||
aa7d318d TT |
7520 | /* Set an active std::terminate breakpoint for each std::terminate |
7521 | master breakpoint. */ | |
7522 | void | |
7523 | set_std_terminate_breakpoint (void) | |
7524 | { | |
1428b37a | 7525 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7526 | if (b->pspace == current_program_space |
7527 | && b->type == bp_std_terminate_master) | |
7528 | { | |
7ab97995 PA |
7529 | momentary_breakpoint_from_master (b, bp_std_terminate, 1, |
7530 | inferior_thread ()->global_num); | |
aa7d318d TT |
7531 | } |
7532 | } | |
7533 | ||
7534 | /* Delete all the std::terminate breakpoints. */ | |
7535 | void | |
7536 | delete_std_terminate_breakpoint (void) | |
7537 | { | |
1428b37a | 7538 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7539 | if (b->type == bp_std_terminate) |
7540 | delete_breakpoint (b); | |
7541 | } | |
7542 | ||
c4093a6a | 7543 | struct breakpoint * |
a6d9a66e | 7544 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7545 | { |
7546 | struct breakpoint *b; | |
c4093a6a | 7547 | |
9efa3c7f | 7548 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
06edf0c0 | 7549 | |
b5de0fa7 | 7550 | b->enable_state = bp_enabled; |
264f9890 PA |
7551 | /* locspec has to be used or breakpoint_re_set will delete me. */ |
7552 | b->locspec = new_address_location_spec (b->loc->address, NULL, 0); | |
c4093a6a | 7553 | |
44702360 | 7554 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7555 | |
c4093a6a JM |
7556 | return b; |
7557 | } | |
7558 | ||
0101ce28 JJ |
7559 | struct lang_and_radix |
7560 | { | |
7561 | enum language lang; | |
7562 | int radix; | |
7563 | }; | |
7564 | ||
4efc6507 DE |
7565 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7566 | ||
7567 | struct breakpoint * | |
7568 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7569 | { | |
9efa3c7f | 7570 | return create_internal_breakpoint (gdbarch, address, bp_jit_event); |
4efc6507 | 7571 | } |
0101ce28 | 7572 | |
03673fc7 PP |
7573 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7574 | ||
7575 | void | |
7576 | remove_jit_event_breakpoints (void) | |
7577 | { | |
1428b37a | 7578 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7579 | if (b->type == bp_jit_event |
7580 | && b->loc->pspace == current_program_space) | |
7581 | delete_breakpoint (b); | |
7582 | } | |
7583 | ||
cae688ec JJ |
7584 | void |
7585 | remove_solib_event_breakpoints (void) | |
7586 | { | |
1428b37a | 7587 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7588 | if (b->type == bp_shlib_event |
7589 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7590 | delete_breakpoint (b); |
7591 | } | |
7592 | ||
f37f681c PA |
7593 | /* See breakpoint.h. */ |
7594 | ||
7595 | void | |
7596 | remove_solib_event_breakpoints_at_next_stop (void) | |
7597 | { | |
1428b37a | 7598 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7599 | if (b->type == bp_shlib_event |
7600 | && b->loc->pspace == current_program_space) | |
7601 | b->disposition = disp_del_at_next_stop; | |
7602 | } | |
7603 | ||
04086b45 PA |
7604 | /* Helper for create_solib_event_breakpoint / |
7605 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7606 | INSERT_MODE to pass through to update_global_location_list. */ | |
7607 | ||
7608 | static struct breakpoint * | |
7609 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7610 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7611 | { |
7612 | struct breakpoint *b; | |
7613 | ||
9efa3c7f | 7614 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
04086b45 | 7615 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7616 | return b; |
7617 | } | |
7618 | ||
04086b45 PA |
7619 | struct breakpoint * |
7620 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7621 | { | |
7622 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7623 | } | |
7624 | ||
f37f681c PA |
7625 | /* See breakpoint.h. */ |
7626 | ||
7627 | struct breakpoint * | |
7628 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7629 | { | |
7630 | struct breakpoint *b; | |
7631 | ||
04086b45 PA |
7632 | /* Explicitly tell update_global_location_list to insert |
7633 | locations. */ | |
7634 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7635 | if (!b->loc->inserted) |
7636 | { | |
7637 | delete_breakpoint (b); | |
7638 | return NULL; | |
7639 | } | |
7640 | return b; | |
7641 | } | |
7642 | ||
cae688ec JJ |
7643 | /* Disable any breakpoints that are on code in shared libraries. Only |
7644 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7645 | ||
7646 | void | |
cb851954 | 7647 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7648 | { |
48d7020b | 7649 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7650 | { |
7651 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7652 | struct breakpoint *b = loc->owner; | |
7653 | ||
7654 | /* We apply the check to all breakpoints, including disabled for | |
7655 | those with loc->duplicate set. This is so that when breakpoint | |
7656 | becomes enabled, or the duplicate is removed, gdb will try to | |
7657 | insert all breakpoints. If we don't set shlib_disabled here, | |
7658 | we'll try to insert those breakpoints and fail. */ | |
7659 | if (((b->type == bp_breakpoint) | |
7660 | || (b->type == bp_jit_event) | |
7661 | || (b->type == bp_hardware_breakpoint) | |
7662 | || (is_tracepoint (b))) | |
7663 | && loc->pspace == current_program_space | |
7664 | && !loc->shlib_disabled | |
7665 | && solib_name_from_address (loc->pspace, loc->address) | |
7666 | ) | |
7667 | { | |
7668 | loc->shlib_disabled = 1; | |
7669 | } | |
7670 | } | |
cae688ec JJ |
7671 | } |
7672 | ||
63644780 NB |
7673 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7674 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7675 | disabled ones can just stay disabled. */ | |
84acb35a | 7676 | |
75149521 | 7677 | static void |
84acb35a JJ |
7678 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7679 | { | |
84acb35a JJ |
7680 | int disabled_shlib_breaks = 0; |
7681 | ||
48d7020b | 7682 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7683 | { |
7684 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7685 | struct breakpoint *b = loc->owner; | |
7686 | ||
7687 | if (solib->pspace == loc->pspace | |
7688 | && !loc->shlib_disabled | |
7689 | && (((b->type == bp_breakpoint | |
7690 | || b->type == bp_jit_event | |
7691 | || b->type == bp_hardware_breakpoint) | |
7692 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7693 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7694 | || is_tracepoint (b)) | |
7695 | && solib_contains_address_p (solib, loc->address)) | |
7696 | { | |
7697 | loc->shlib_disabled = 1; | |
7698 | /* At this point, we cannot rely on remove_breakpoint | |
7699 | succeeding so we must mark the breakpoint as not inserted | |
7700 | to prevent future errors occurring in remove_breakpoints. */ | |
7701 | loc->inserted = 0; | |
7702 | ||
7703 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7704 | gdb::observers::breakpoint_modified.notify (b); | |
7705 | ||
7706 | if (!disabled_shlib_breaks) | |
7707 | { | |
7708 | target_terminal::ours_for_output (); | |
7709 | warning (_("Temporarily disabling breakpoints " | |
7710 | "for unloaded shared library \"%s\""), | |
7711 | solib->so_name); | |
7712 | } | |
7713 | disabled_shlib_breaks = 1; | |
7714 | } | |
7715 | } | |
84acb35a JJ |
7716 | } |
7717 | ||
63644780 NB |
7718 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7719 | notification of free_objfile. Only apply to enabled breakpoints, | |
7720 | disabled ones can just stay disabled. */ | |
7721 | ||
7722 | static void | |
7723 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7724 | { | |
63644780 NB |
7725 | if (objfile == NULL) |
7726 | return; | |
7727 | ||
d03de421 PA |
7728 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7729 | managed by the user with add-symbol-file/remove-symbol-file. | |
7730 | Similarly to how breakpoints in shared libraries are handled in | |
7731 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7732 | shlib_disabled so they end up uninserted on the next global |
7733 | location list update. Shared libraries not loaded by the user | |
7734 | aren't handled here -- they're already handled in | |
7735 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7736 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7737 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7738 | main objfile). */ | |
7739 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7740 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7741 | return; |
7742 | ||
43892fdf | 7743 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7744 | { |
63644780 NB |
7745 | int bp_modified = 0; |
7746 | ||
7747 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7748 | continue; | |
7749 | ||
40cb8ca5 | 7750 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7751 | { |
7752 | CORE_ADDR loc_addr = loc->address; | |
7753 | ||
7754 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7755 | && loc->loc_type != bp_loc_software_breakpoint) | |
7756 | continue; | |
7757 | ||
7758 | if (loc->shlib_disabled != 0) | |
7759 | continue; | |
7760 | ||
7761 | if (objfile->pspace != loc->pspace) | |
7762 | continue; | |
7763 | ||
7764 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7765 | && loc->loc_type != bp_loc_software_breakpoint) | |
7766 | continue; | |
7767 | ||
7768 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7769 | { | |
7770 | loc->shlib_disabled = 1; | |
08351840 PA |
7771 | /* At this point, we don't know whether the object was |
7772 | unmapped from the inferior or not, so leave the | |
7773 | inserted flag alone. We'll handle failure to | |
7774 | uninsert quietly, in case the object was indeed | |
7775 | unmapped. */ | |
63644780 NB |
7776 | |
7777 | mark_breakpoint_location_modified (loc); | |
7778 | ||
7779 | bp_modified = 1; | |
7780 | } | |
7781 | } | |
7782 | ||
7783 | if (bp_modified) | |
76727919 | 7784 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7785 | } |
7786 | } | |
7787 | ||
b650a282 | 7788 | /* See breakpoint.h. */ |
ce78b96d | 7789 | |
92bb0228 PA |
7790 | breakpoint::breakpoint (struct gdbarch *gdbarch_, enum bptype bptype, |
7791 | bool temp, const char *cond_string_) | |
7792 | : type (bptype), | |
7793 | disposition (temp ? disp_del : disp_donttouch), | |
7794 | gdbarch (gdbarch_), | |
7795 | language (current_language->la_language), | |
7796 | input_radix (::input_radix), | |
7797 | cond_string (cond_string_ != nullptr | |
7798 | ? make_unique_xstrdup (cond_string_) | |
7799 | : nullptr), | |
7800 | related_breakpoint (this) | |
7801 | { | |
7802 | } | |
7803 | ||
7804 | /* See breakpoint.h. */ | |
7805 | ||
fed1c982 | 7806 | catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, |
92bb0228 PA |
7807 | const char *cond_string) |
7808 | : breakpoint (gdbarch, bp_catchpoint, temp, cond_string) | |
c906108c | 7809 | { |
acd0955b | 7810 | add_dummy_location (this, current_program_space); |
c5aa993b | 7811 | |
acd0955b | 7812 | pspace = current_program_space; |
346774a9 PA |
7813 | } |
7814 | ||
28010a5d | 7815 | void |
b270e6f9 | 7816 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 7817 | { |
b270e6f9 | 7818 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 7819 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
7820 | if (is_tracepoint (b)) |
7821 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
7822 | if (!internal) |
7823 | mention (b); | |
76727919 | 7824 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
7825 | |
7826 | if (update_gll) | |
44702360 | 7827 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
7828 | } |
7829 | ||
c906108c | 7830 | static int |
fba45db2 | 7831 | hw_breakpoint_used_count (void) |
c906108c | 7832 | { |
c906108c SS |
7833 | int i = 0; |
7834 | ||
43892fdf | 7835 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 7836 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 7837 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
7838 | { |
7839 | /* Special types of hardware breakpoints may use more than | |
7840 | one register. */ | |
c47614fe | 7841 | i += b->resources_needed (bl); |
f1310107 | 7842 | } |
c906108c SS |
7843 | |
7844 | return i; | |
7845 | } | |
7846 | ||
a1398e0c PA |
7847 | /* Returns the resources B would use if it were a hardware |
7848 | watchpoint. */ | |
7849 | ||
c906108c | 7850 | static int |
a1398e0c | 7851 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 7852 | { |
c906108c SS |
7853 | int i = 0; |
7854 | ||
a1398e0c PA |
7855 | if (!breakpoint_enabled (b)) |
7856 | return 0; | |
7857 | ||
40cb8ca5 | 7858 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
7859 | { |
7860 | /* Special types of hardware watchpoints may use more than | |
7861 | one register. */ | |
c47614fe | 7862 | i += b->resources_needed (bl); |
a1398e0c PA |
7863 | } |
7864 | ||
7865 | return i; | |
7866 | } | |
7867 | ||
7868 | /* Returns the sum the used resources of all hardware watchpoints of | |
7869 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
7870 | the sum of the used resources of all hardware watchpoints of other | |
7871 | types _not_ TYPE. */ | |
7872 | ||
7873 | static int | |
7874 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
7875 | enum bptype type, int *other_type_used) | |
7876 | { | |
7877 | int i = 0; | |
a1398e0c | 7878 | |
c906108c | 7879 | *other_type_used = 0; |
43892fdf | 7880 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 7881 | { |
a1398e0c PA |
7882 | if (b == except) |
7883 | continue; | |
e09342b5 TJB |
7884 | if (!breakpoint_enabled (b)) |
7885 | continue; | |
7886 | ||
a1398e0c PA |
7887 | if (b->type == type) |
7888 | i += hw_watchpoint_use_count (b); | |
7889 | else if (is_hardware_watchpoint (b)) | |
7890 | *other_type_used = 1; | |
e09342b5 TJB |
7891 | } |
7892 | ||
c906108c SS |
7893 | return i; |
7894 | } | |
7895 | ||
c906108c | 7896 | void |
fba45db2 | 7897 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7898 | { |
43892fdf | 7899 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7900 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7901 | { |
b5de0fa7 | 7902 | b->enable_state = bp_call_disabled; |
44702360 | 7903 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 7904 | } |
c906108c SS |
7905 | } |
7906 | ||
7907 | void | |
fba45db2 | 7908 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7909 | { |
43892fdf | 7910 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7911 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7912 | { |
b5de0fa7 | 7913 | b->enable_state = bp_enabled; |
44702360 | 7914 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 7915 | } |
c906108c SS |
7916 | } |
7917 | ||
8bea4e01 UW |
7918 | void |
7919 | disable_breakpoints_before_startup (void) | |
7920 | { | |
6c95b8df | 7921 | current_program_space->executing_startup = 1; |
44702360 | 7922 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
7923 | } |
7924 | ||
7925 | void | |
7926 | enable_breakpoints_after_startup (void) | |
7927 | { | |
6c95b8df | 7928 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7929 | breakpoint_re_set (); |
8bea4e01 UW |
7930 | } |
7931 | ||
7a3e3265 PA |
7932 | /* Allocate a new momentary breakpoint. */ |
7933 | ||
7ab97995 | 7934 | template<typename... Arg> |
7a3e3265 | 7935 | static momentary_breakpoint * |
7ab97995 PA |
7936 | new_momentary_breakpoint (struct gdbarch *gdbarch, enum bptype type, |
7937 | Arg&&... args) | |
7a3e3265 PA |
7938 | { |
7939 | if (type == bp_longjmp || type == bp_exception) | |
7ab97995 PA |
7940 | return new longjmp_breakpoint (gdbarch, type, |
7941 | std::forward<Arg> (args)...); | |
7a3e3265 | 7942 | else |
7ab97995 PA |
7943 | return new momentary_breakpoint (gdbarch, type, |
7944 | std::forward<Arg> (args)...); | |
7a3e3265 PA |
7945 | } |
7946 | ||
7c16b83e PA |
7947 | /* Set a momentary breakpoint of type TYPE at address specified by |
7948 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
7949 | frame. */ | |
c906108c | 7950 | |
454dafbd | 7951 | breakpoint_up |
a6d9a66e UW |
7952 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7953 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7954 | { |
193facb3 JK |
7955 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
7956 | tail-called one. */ | |
7957 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 7958 | |
7a3e3265 | 7959 | std::unique_ptr<momentary_breakpoint> b |
7ab97995 PA |
7960 | (new_momentary_breakpoint (gdbarch, type, sal.pspace, frame_id, |
7961 | inferior_thread ()->global_num)); | |
7a3e3265 PA |
7962 | |
7963 | b->add_location (sal); | |
c906108c | 7964 | |
7a3e3265 PA |
7965 | breakpoint_up bp (add_to_breakpoint_chain (std::move (b))); |
7966 | ||
44702360 | 7967 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7968 | |
7a3e3265 | 7969 | return bp; |
c906108c | 7970 | } |
611c83ae | 7971 | |
06edf0c0 | 7972 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
7973 | The new breakpoint will have type TYPE, use OPS as its |
7974 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 7975 | |
06edf0c0 PA |
7976 | static struct breakpoint * |
7977 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7978 | enum bptype type, | |
7ab97995 PA |
7979 | int loc_enabled, |
7980 | int thread) | |
e58b0e63 | 7981 | { |
7a3e3265 | 7982 | std::unique_ptr<breakpoint> copy |
7ab97995 PA |
7983 | (new_momentary_breakpoint (orig->gdbarch, type, orig->pspace, |
7984 | orig->frame_id, thread)); | |
ee89d0a4 | 7985 | copy->loc = copy->allocate_location (); |
0ba852ab | 7986 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 7987 | |
a6d9a66e | 7988 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7989 | copy->loc->requested_address = orig->loc->requested_address; |
7990 | copy->loc->address = orig->loc->address; | |
7991 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7992 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 7993 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 7994 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 7995 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 7996 | copy->loc->enabled = loc_enabled; |
e58b0e63 | 7997 | |
7a3e3265 | 7998 | breakpoint *b = add_to_breakpoint_chain (std::move (copy)); |
44702360 | 7999 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
7a3e3265 | 8000 | return b; |
e58b0e63 PA |
8001 | } |
8002 | ||
06edf0c0 PA |
8003 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8004 | ORIG is NULL. */ | |
8005 | ||
8006 | struct breakpoint * | |
8007 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8008 | { | |
8009 | /* If there's nothing to clone, then return nothing. */ | |
8010 | if (orig == NULL) | |
8011 | return NULL; | |
8012 | ||
7ab97995 PA |
8013 | return momentary_breakpoint_from_master (orig, orig->type, 0, |
8014 | orig->thread); | |
06edf0c0 PA |
8015 | } |
8016 | ||
454dafbd | 8017 | breakpoint_up |
a6d9a66e UW |
8018 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8019 | enum bptype type) | |
611c83ae PA |
8020 | { |
8021 | struct symtab_and_line sal; | |
8022 | ||
8023 | sal = find_pc_line (pc, 0); | |
8024 | sal.pc = pc; | |
8025 | sal.section = find_pc_overlay (pc); | |
8026 | sal.explicit_pc = 1; | |
8027 | ||
a6d9a66e | 8028 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8029 | } |
c906108c | 8030 | \f |
c5aa993b | 8031 | |
c906108c SS |
8032 | /* Tell the user we have just set a breakpoint B. */ |
8033 | ||
8034 | static void | |
b713485d | 8035 | mention (const breakpoint *b) |
c906108c | 8036 | { |
c47614fe | 8037 | b->print_mention (); |
2d33446d | 8038 | current_uiout->text ("\n"); |
c906108c | 8039 | } |
c906108c | 8040 | \f |
c5aa993b | 8041 | |
5133a315 | 8042 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8043 | |
7f32a4d5 PA |
8044 | /* Handle "set breakpoint auto-hw on". |
8045 | ||
8046 | If the explicitly specified breakpoint type is not hardware | |
8047 | breakpoint, check the memory map to see whether the breakpoint | |
8048 | address is in read-only memory. | |
8049 | ||
8050 | - location type is not hardware breakpoint, memory is read-only. | |
8051 | We change the type of the location to hardware breakpoint. | |
8052 | ||
8053 | - location type is hardware breakpoint, memory is read-write. This | |
8054 | means we've previously made the location hardware one, but then the | |
8055 | memory map changed, so we undo. | |
8056 | */ | |
8057 | ||
8058 | static void | |
8059 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8060 | { | |
8061 | if (automatic_hardware_breakpoints | |
8062 | && bl->owner->type != bp_hardware_breakpoint | |
8063 | && (bl->loc_type == bp_loc_software_breakpoint | |
8064 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8065 | { | |
8066 | /* When breakpoints are removed, remove_breakpoints will use | |
8067 | location types we've just set here, the only possible problem | |
8068 | is that memory map has changed during running program, but | |
8069 | it's not going to work anyway with current gdb. */ | |
8070 | mem_region *mr = lookup_mem_region (bl->address); | |
8071 | ||
8072 | if (mr != nullptr) | |
8073 | { | |
8074 | enum bp_loc_type new_type; | |
8075 | ||
8076 | if (mr->attrib.mode != MEM_RW) | |
8077 | new_type = bp_loc_hardware_breakpoint; | |
8078 | else | |
8079 | new_type = bp_loc_software_breakpoint; | |
8080 | ||
8081 | if (new_type != bl->loc_type) | |
8082 | { | |
8083 | static bool said = false; | |
8084 | ||
8085 | bl->loc_type = new_type; | |
8086 | if (!said) | |
8087 | { | |
6cb06a8c TT |
8088 | gdb_printf (_("Note: automatically using " |
8089 | "hardware breakpoints for " | |
8090 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8091 | said = true; |
8092 | } | |
8093 | } | |
8094 | } | |
8095 | } | |
8096 | } | |
8097 | ||
06615628 | 8098 | bp_location * |
74421c0b | 8099 | code_breakpoint::add_location (const symtab_and_line &sal) |
0d381245 | 8100 | { |
06615628 | 8101 | struct bp_location *new_loc, **tmp; |
3742cc8b | 8102 | CORE_ADDR adjusted_address; |
06615628 | 8103 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
3742cc8b YQ |
8104 | |
8105 | if (loc_gdbarch == NULL) | |
06615628 | 8106 | loc_gdbarch = gdbarch; |
3742cc8b YQ |
8107 | |
8108 | /* Adjust the breakpoint's address prior to allocating a location. | |
ee89d0a4 | 8109 | Once we call allocate_location(), that mostly uninitialized |
3742cc8b YQ |
8110 | location will be placed on the location chain. Adjustment of the |
8111 | breakpoint may cause target_read_memory() to be called and we do | |
8112 | not want its scan of the location chain to find a breakpoint and | |
8113 | location that's only been partially initialized. */ | |
8114 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
60270718 AB |
8115 | sal.pc, type, |
8116 | sal.pspace); | |
0d381245 | 8117 | |
d30113d4 | 8118 | /* Sort the locations by their ADDRESS. */ |
06615628 PA |
8119 | new_loc = allocate_location (); |
8120 | for (tmp = &(loc); *tmp != NULL && (*tmp)->address <= adjusted_address; | |
d30113d4 | 8121 | tmp = &((*tmp)->next)) |
0d381245 | 8122 | ; |
06615628 PA |
8123 | new_loc->next = *tmp; |
8124 | *tmp = new_loc; | |
8125 | ||
8126 | new_loc->requested_address = sal.pc; | |
8127 | new_loc->address = adjusted_address; | |
8128 | new_loc->pspace = sal.pspace; | |
8129 | new_loc->probe.prob = sal.prob; | |
8130 | new_loc->probe.objfile = sal.objfile; | |
8131 | gdb_assert (new_loc->pspace != NULL); | |
8132 | new_loc->section = sal.section; | |
8133 | new_loc->gdbarch = loc_gdbarch; | |
8134 | new_loc->line_number = sal.line; | |
8135 | new_loc->symtab = sal.symtab; | |
8136 | new_loc->symbol = sal.symbol; | |
8137 | new_loc->msymbol = sal.msymbol; | |
8138 | new_loc->objfile = sal.objfile; | |
8139 | ||
8140 | set_breakpoint_location_function (new_loc); | |
1a853c52 | 8141 | |
6ae88661 LM |
8142 | /* While by definition, permanent breakpoints are already present in the |
8143 | code, we don't mark the location as inserted. Normally one would expect | |
8144 | that GDB could rely on that breakpoint instruction to stop the program, | |
8145 | thus removing the need to insert its own breakpoint, except that executing | |
8146 | the breakpoint instruction can kill the target instead of reporting a | |
8147 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8148 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8149 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8150 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8151 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8152 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8153 | it manually increments the PC, thus avoiding executing the breakpoint | |
8154 | instruction.) */ | |
06615628 PA |
8155 | if (bp_loc_is_permanent (new_loc)) |
8156 | new_loc->permanent = 1; | |
1a853c52 | 8157 | |
06615628 | 8158 | return new_loc; |
0d381245 | 8159 | } |
514f746b AR |
8160 | \f |
8161 | ||
5133a315 LM |
8162 | /* Return true if LOC is pointing to a permanent breakpoint, |
8163 | return false otherwise. */ | |
1cf4d951 | 8164 | |
5133a315 | 8165 | static bool |
1cf4d951 PA |
8166 | bp_loc_is_permanent (struct bp_location *loc) |
8167 | { | |
514f746b AR |
8168 | gdb_assert (loc != NULL); |
8169 | ||
cb1e4e32 PA |
8170 | /* If we have a non-breakpoint-backed catchpoint or a software |
8171 | watchpoint, just return 0. We should not attempt to read from | |
8172 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8173 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8174 | memory. */ |
cb1e4e32 | 8175 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8176 | return false; |
244558af | 8177 | |
5ed8105e | 8178 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8179 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8180 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8181 | } |
8182 | ||
e7e0cddf SS |
8183 | /* Build a command list for the dprintf corresponding to the current |
8184 | settings of the dprintf style options. */ | |
8185 | ||
8186 | static void | |
8187 | update_dprintf_command_list (struct breakpoint *b) | |
8188 | { | |
6f781ee3 | 8189 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8190 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8191 | |
8192 | if (!dprintf_args) | |
8193 | return; | |
8194 | ||
8195 | dprintf_args = skip_spaces (dprintf_args); | |
8196 | ||
8197 | /* Allow a comma, as it may have terminated a location, but don't | |
8198 | insist on it. */ | |
8199 | if (*dprintf_args == ',') | |
8200 | ++dprintf_args; | |
8201 | dprintf_args = skip_spaces (dprintf_args); | |
8202 | ||
8203 | if (*dprintf_args != '"') | |
8204 | error (_("Bad format string, missing '\"'.")); | |
8205 | ||
d3ce09f5 | 8206 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8207 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8208 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8209 | { |
e0700ba4 | 8210 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8211 | error (_("No function supplied for dprintf call")); |
8212 | ||
e0700ba4 | 8213 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8214 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8215 | dprintf_function.c_str (), |
8216 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8217 | dprintf_args); |
8218 | else | |
8219 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8220 | dprintf_function.c_str (), |
e7e0cddf SS |
8221 | dprintf_args); |
8222 | } | |
d3ce09f5 SS |
8223 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8224 | { | |
8225 | if (target_can_run_breakpoint_commands ()) | |
8226 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8227 | else | |
8228 | { | |
8229 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8230 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8231 | } | |
8232 | } | |
e7e0cddf SS |
8233 | else |
8234 | internal_error (__FILE__, __LINE__, | |
8235 | _("Invalid dprintf style.")); | |
8236 | ||
f28045c2 | 8237 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8238 | |
12973681 TT |
8239 | /* Manufacture a printf sequence. */ |
8240 | struct command_line *printf_cmd_line | |
8579fd13 | 8241 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8242 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8243 | command_lines_deleter ())); | |
e7e0cddf SS |
8244 | } |
8245 | ||
8246 | /* Update all dprintf commands, making their command lists reflect | |
8247 | current style settings. */ | |
8248 | ||
8249 | static void | |
eb4c3f4a | 8250 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8251 | struct cmd_list_element *c) |
8252 | { | |
43892fdf SM |
8253 | for (breakpoint *b : all_breakpoints ()) |
8254 | if (b->type == bp_dprintf) | |
e7e0cddf | 8255 | update_dprintf_command_list (b); |
e7e0cddf | 8256 | } |
c3f6f71d | 8257 | |
74421c0b | 8258 | code_breakpoint::code_breakpoint (struct gdbarch *gdbarch_, |
3b003a61 PA |
8259 | enum bptype type_, |
8260 | gdb::array_view<const symtab_and_line> sals, | |
264f9890 | 8261 | location_spec_up &&locspec_, |
3b003a61 PA |
8262 | gdb::unique_xmalloc_ptr<char> filter_, |
8263 | gdb::unique_xmalloc_ptr<char> cond_string_, | |
8264 | gdb::unique_xmalloc_ptr<char> extra_string_, | |
8265 | enum bpdisp disposition_, | |
8266 | int thread_, int task_, int ignore_count_, | |
8267 | int from_tty, | |
8268 | int enabled_, unsigned flags, | |
8269 | int display_canonical_) | |
8270 | : breakpoint (gdbarch_, type_) | |
018d34a4 | 8271 | { |
0d381245 | 8272 | int i; |
018d34a4 VP |
8273 | |
8274 | if (type == bp_hardware_breakpoint) | |
8275 | { | |
fbbd034e AS |
8276 | int target_resources_ok; |
8277 | ||
8278 | i = hw_breakpoint_used_count (); | |
8279 | target_resources_ok = | |
8280 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8281 | i + 1, 0); |
8282 | if (target_resources_ok == 0) | |
8283 | error (_("No hardware breakpoint support in the target.")); | |
8284 | else if (target_resources_ok < 0) | |
8285 | error (_("Hardware breakpoints used exceeds limit.")); | |
8286 | } | |
8287 | ||
6c5b2ebe | 8288 | gdb_assert (!sals.empty ()); |
6c95b8df | 8289 | |
3b003a61 PA |
8290 | thread = thread_; |
8291 | task = task_; | |
0d381245 | 8292 | |
3b003a61 PA |
8293 | cond_string = std::move (cond_string_); |
8294 | extra_string = std::move (extra_string_); | |
8295 | ignore_count = ignore_count_; | |
8296 | enable_state = enabled_ ? bp_enabled : bp_disabled; | |
8297 | disposition = disposition_; | |
5af949e3 | 8298 | |
3b003a61 PA |
8299 | if (type == bp_static_tracepoint |
8300 | || type == bp_static_marker_tracepoint) | |
8301 | { | |
8302 | auto *t = static_cast<struct tracepoint *> (this); | |
8303 | struct static_tracepoint_marker marker; | |
0d381245 | 8304 | |
3b003a61 | 8305 | if (strace_marker_p (this)) |
0d381245 | 8306 | { |
3b003a61 PA |
8307 | /* We already know the marker exists, otherwise, we wouldn't |
8308 | see a sal for it. */ | |
709438c7 | 8309 | const char *p = &locspec_->to_string ()[3]; |
3b003a61 | 8310 | const char *endp; |
0fb4aa4b | 8311 | |
3b003a61 | 8312 | p = skip_spaces (p); |
0fb4aa4b | 8313 | |
3b003a61 | 8314 | endp = skip_to_space (p); |
0fb4aa4b | 8315 | |
3b003a61 | 8316 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8317 | |
3b003a61 PA |
8318 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8319 | t->static_trace_marker_id.c_str ()); | |
8320 | } | |
8321 | else if (target_static_tracepoint_marker_at (sals[0].pc, &marker)) | |
8322 | { | |
8323 | t->static_trace_marker_id = std::move (marker.str_id); | |
0fb4aa4b | 8324 | |
3b003a61 PA |
8325 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8326 | t->static_trace_marker_id.c_str ()); | |
0d381245 VP |
8327 | } |
8328 | else | |
3b003a61 PA |
8329 | warning (_("Couldn't determine the static tracepoint marker to probe")); |
8330 | } | |
8331 | ||
8332 | for (const auto &sal : sals) | |
8333 | { | |
8334 | if (from_tty) | |
018d34a4 | 8335 | { |
3b003a61 PA |
8336 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8337 | if (loc_gdbarch == nullptr) | |
8338 | loc_gdbarch = gdbarch; | |
8339 | ||
8340 | describe_other_breakpoints (loc_gdbarch, | |
8341 | sal.pspace, sal.pc, sal.section, thread); | |
0d381245 VP |
8342 | } |
8343 | ||
3b003a61 PA |
8344 | bp_location *new_loc = add_location (sal); |
8345 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) | |
8346 | new_loc->inserted = 1; | |
8347 | ||
b5fa468f TBA |
8348 | /* Do not set breakpoint locations conditions yet. As locations |
8349 | are inserted, they get sorted based on their addresses. Let | |
8350 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8351 | |
8352 | /* Dynamic printf requires and uses additional arguments on the | |
8353 | command line, otherwise it's an error. */ | |
8354 | if (type == bp_dprintf) | |
8355 | { | |
3b003a61 PA |
8356 | if (extra_string != nullptr) |
8357 | update_dprintf_command_list (this); | |
e7e0cddf SS |
8358 | else |
8359 | error (_("Format string required")); | |
8360 | } | |
3b003a61 PA |
8361 | else if (extra_string != nullptr) |
8362 | error (_("Garbage '%s' at end of command"), extra_string.get ()); | |
855a6e68 | 8363 | } |
018d34a4 | 8364 | |
b5fa468f TBA |
8365 | /* The order of the locations is now stable. Set the location |
8366 | condition using the location's number. */ | |
8367 | int loc_num = 1; | |
3b003a61 | 8368 | for (bp_location *bl : locations ()) |
b5fa468f | 8369 | { |
3b003a61 PA |
8370 | if (cond_string != nullptr) |
8371 | set_breakpoint_location_condition (cond_string.get (), bl, | |
8372 | number, loc_num); | |
b5fa468f TBA |
8373 | |
8374 | ++loc_num; | |
8375 | } | |
8376 | ||
3b003a61 | 8377 | display_canonical = display_canonical_; |
264f9890 PA |
8378 | if (locspec_ != nullptr) |
8379 | locspec = std::move (locspec_); | |
018d34a4 | 8380 | else |
264f9890 | 8381 | locspec = new_address_location_spec (this->loc->address, NULL, 0); |
3b003a61 | 8382 | filter = std::move (filter_); |
d9b3f62e | 8383 | } |
018d34a4 | 8384 | |
d9b3f62e PA |
8385 | static void |
8386 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8387 | gdb::array_view<const symtab_and_line> sals, |
264f9890 | 8388 | location_spec_up &&locspec, |
e1e01040 PA |
8389 | gdb::unique_xmalloc_ptr<char> filter, |
8390 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8391 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8392 | enum bptype type, enum bpdisp disposition, |
8393 | int thread, int task, int ignore_count, | |
ef4848c7 | 8394 | int from_tty, |
44f238bb PA |
8395 | int enabled, int internal, unsigned flags, |
8396 | int display_canonical) | |
d9b3f62e | 8397 | { |
74421c0b | 8398 | std::unique_ptr<code_breakpoint> b |
3b003a61 PA |
8399 | = new_breakpoint_from_type (gdbarch, |
8400 | type, | |
8401 | sals, | |
264f9890 | 8402 | std::move (locspec), |
3b003a61 PA |
8403 | std::move (filter), |
8404 | std::move (cond_string), | |
8405 | std::move (extra_string), | |
8406 | disposition, | |
8407 | thread, task, ignore_count, | |
8408 | from_tty, | |
8409 | enabled, flags, | |
8410 | display_canonical); | |
d9b3f62e | 8411 | |
b270e6f9 | 8412 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8413 | } |
8414 | ||
8415 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8416 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8417 | value. COND_STRING, if not NULL, specified the condition to be | |
8418 | used for all breakpoints. Essentially the only case where | |
8419 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8420 | function. In that case, it's still not possible to specify | |
8421 | separate conditions for different overloaded functions, so | |
8422 | we take just a single condition string. | |
8423 | ||
c3f6f71d | 8424 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8425 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8426 | array contents). If the function fails (error() is called), the |
8427 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8428 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8429 | |
8430 | static void | |
8cdf0e15 | 8431 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8432 | struct linespec_result *canonical, |
e1e01040 PA |
8433 | gdb::unique_xmalloc_ptr<char> cond_string, |
8434 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8435 | enum bptype type, enum bpdisp disposition, |
8436 | int thread, int task, int ignore_count, | |
ef4848c7 | 8437 | int from_tty, |
44f238bb | 8438 | int enabled, int internal, unsigned flags) |
c906108c | 8439 | { |
f8eba3c6 | 8440 | if (canonical->pre_expanded) |
6c5b2ebe | 8441 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8442 | |
6c5b2ebe | 8443 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8444 | { |
f00aae0f | 8445 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8446 | 'break', without arguments. */ |
264f9890 | 8447 | location_spec_up locspec |
5c1ddcb6 PA |
8448 | = (canonical->locspec != nullptr |
8449 | ? canonical->locspec->clone () | |
8450 | : nullptr); | |
e1e01040 | 8451 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8452 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8453 | |
6c5b2ebe | 8454 | create_breakpoint_sal (gdbarch, lsal.sals, |
264f9890 | 8455 | std::move (locspec), |
e1e01040 PA |
8456 | std::move (filter_string), |
8457 | std::move (cond_string), | |
8458 | std::move (extra_string), | |
e7e0cddf | 8459 | type, disposition, |
ef4848c7 | 8460 | thread, task, ignore_count, |
44f238bb | 8461 | from_tty, enabled, internal, flags, |
56435ebe | 8462 | canonical->special_display); |
c3f6f71d | 8463 | } |
c3f6f71d | 8464 | } |
c906108c | 8465 | |
264f9890 | 8466 | /* Parse LOCSPEC which is assumed to be a SAL specification possibly |
c3f6f71d | 8467 | followed by conditionals. On return, SALS contains an array of SAL |
264f9890 PA |
8468 | addresses found. LOCSPEC points to the end of the SAL (for |
8469 | linespec locspecs). | |
9998af43 TJB |
8470 | |
8471 | The array and the line spec strings are allocated on the heap, it is | |
8472 | the caller's responsibility to free them. */ | |
c906108c | 8473 | |
b9362cc7 | 8474 | static void |
264f9890 | 8475 | parse_breakpoint_sals (location_spec *locspec, |
58438ac1 | 8476 | struct linespec_result *canonical) |
c3f6f71d | 8477 | { |
f00aae0f KS |
8478 | struct symtab_and_line cursal; |
8479 | ||
7464aeaa | 8480 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
f00aae0f | 8481 | { |
40d97ee2 | 8482 | const char *spec = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 8483 | |
a20714ff | 8484 | if (spec == NULL) |
f00aae0f KS |
8485 | { |
8486 | /* The last displayed codepoint, if it's valid, is our default | |
8487 | breakpoint address. */ | |
8488 | if (last_displayed_sal_is_valid ()) | |
8489 | { | |
f00aae0f KS |
8490 | /* Set sal's pspace, pc, symtab, and line to the values |
8491 | corresponding to the last call to print_frame_info. | |
8492 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8493 | as the breakpoint line number is inappropriate otherwise. | |
8494 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8495 | symtab_and_line sal = get_last_displayed_sal (); |
8496 | CORE_ADDR pc = sal.pc; | |
8497 | ||
f00aae0f KS |
8498 | sal = find_pc_line (pc, 0); |
8499 | ||
8500 | /* "break" without arguments is equivalent to "break *PC" | |
8501 | where PC is the last displayed codepoint's address. So | |
8502 | make sure to set sal.explicit_pc to prevent GDB from | |
8503 | trying to expand the list of sals to include all other | |
8504 | instances with the same symtab and line. */ | |
8505 | sal.pc = pc; | |
8506 | sal.explicit_pc = 1; | |
8507 | ||
6c5b2ebe PA |
8508 | struct linespec_sals lsal; |
8509 | lsal.sals = {sal}; | |
f00aae0f KS |
8510 | lsal.canonical = NULL; |
8511 | ||
6c5b2ebe | 8512 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8513 | return; |
8514 | } | |
8515 | else | |
8516 | error (_("No default breakpoint address now.")); | |
c906108c | 8517 | } |
c906108c | 8518 | } |
f00aae0f KS |
8519 | |
8520 | /* Force almost all breakpoints to be in terms of the | |
8521 | current_source_symtab (which is decode_line_1's default). | |
8522 | This should produce the results we want almost all of the | |
8523 | time while leaving default_breakpoint_* alone. | |
8524 | ||
8525 | ObjC: However, don't match an Objective-C method name which | |
8526 | may have a '+' or '-' succeeded by a '['. */ | |
8527 | cursal = get_current_source_symtab_and_line (); | |
8528 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8529 | { |
a20714ff | 8530 | const char *spec = NULL; |
cc80f267 | 8531 | |
7464aeaa | 8532 | if (locspec->type () == LINESPEC_LOCATION_SPEC) |
40d97ee2 | 8533 | spec = as_linespec_location_spec (locspec)->spec_string; |
cc80f267 | 8534 | |
f00aae0f | 8535 | if (!cursal.symtab |
a20714ff PA |
8536 | || (spec != NULL |
8537 | && strchr ("+-", spec[0]) != NULL | |
8538 | && spec[1] != '[')) | |
f00aae0f | 8539 | { |
264f9890 | 8540 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8541 | get_last_displayed_symtab (), |
8542 | get_last_displayed_line (), | |
8543 | canonical, NULL, NULL); | |
8544 | return; | |
8545 | } | |
c906108c | 8546 | } |
f00aae0f | 8547 | |
264f9890 | 8548 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8549 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8550 | } |
c906108c | 8551 | |
c906108c | 8552 | |
c3f6f71d | 8553 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8554 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8555 | |
b9362cc7 | 8556 | static void |
6c5b2ebe | 8557 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8558 | { |
6c5b2ebe PA |
8559 | for (auto &sal : sals) |
8560 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8561 | } |
8562 | ||
7a697b8d SS |
8563 | /* Fast tracepoints may have restrictions on valid locations. For |
8564 | instance, a fast tracepoint using a jump instead of a trap will | |
8565 | likely have to overwrite more bytes than a trap would, and so can | |
8566 | only be placed where the instruction is longer than the jump, or a | |
8567 | multi-instruction sequence does not have a jump into the middle of | |
8568 | it, etc. */ | |
8569 | ||
8570 | static void | |
8571 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8572 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8573 | { |
6c5b2ebe | 8574 | for (const auto &sal : sals) |
7a697b8d | 8575 | { |
f8eba3c6 TT |
8576 | struct gdbarch *sarch; |
8577 | ||
6c5b2ebe | 8578 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8579 | /* We fall back to GDBARCH if there is no architecture |
8580 | associated with SAL. */ | |
8581 | if (sarch == NULL) | |
8582 | sarch = gdbarch; | |
281d762b TT |
8583 | std::string msg; |
8584 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8585 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8586 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8587 | } |
8588 | } | |
8589 | ||
018d34a4 VP |
8590 | /* Given TOK, a string specification of condition and thread, as |
8591 | accepted by the 'break' command, extract the condition | |
8592 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8593 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8594 | If no condition is found, *COND_STRING is set to NULL. |
8595 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8596 | |
8597 | static void | |
bbc13ae3 | 8598 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8599 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8600 | int *thread, int *task, | |
8601 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8602 | { |
6f781ee3 | 8603 | cond_string->reset (); |
018d34a4 | 8604 | *thread = -1; |
ed1d1739 | 8605 | *task = 0; |
6f781ee3 | 8606 | rest->reset (); |
733d554a | 8607 | bool force = false; |
ed1d1739 | 8608 | |
018d34a4 VP |
8609 | while (tok && *tok) |
8610 | { | |
bbc13ae3 | 8611 | const char *end_tok; |
018d34a4 | 8612 | int toklen; |
bbc13ae3 KS |
8613 | const char *cond_start = NULL; |
8614 | const char *cond_end = NULL; | |
cc59ec59 | 8615 | |
f1735a53 | 8616 | tok = skip_spaces (tok); |
e7e0cddf SS |
8617 | |
8618 | if ((*tok == '"' || *tok == ',') && rest) | |
8619 | { | |
6f781ee3 | 8620 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8621 | return; |
8622 | } | |
8623 | ||
f1735a53 | 8624 | end_tok = skip_to_space (tok); |
d634f2de | 8625 | |
018d34a4 | 8626 | toklen = end_tok - tok; |
d634f2de | 8627 | |
018d34a4 VP |
8628 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8629 | { | |
8630 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8631 | try |
8632 | { | |
8633 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8634 | } | |
8635 | catch (const gdb_exception_error &) | |
8636 | { | |
8637 | if (!force) | |
8638 | throw; | |
8639 | else | |
8640 | tok = tok + strlen (tok); | |
8641 | } | |
018d34a4 | 8642 | cond_end = tok; |
6f781ee3 | 8643 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8644 | } |
733d554a TBA |
8645 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8646 | { | |
5759831a | 8647 | tok = tok + toklen; |
733d554a TBA |
8648 | force = true; |
8649 | } | |
018d34a4 VP |
8650 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8651 | { | |
5d5658a1 PA |
8652 | const char *tmptok; |
8653 | struct thread_info *thr; | |
d634f2de | 8654 | |
018d34a4 | 8655 | tok = end_tok + 1; |
5d5658a1 | 8656 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8657 | if (tok == tmptok) |
8658 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8659 | *thread = thr->global_num; |
bbc13ae3 | 8660 | tok = tmptok; |
018d34a4 | 8661 | } |
4a306c9a JB |
8662 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8663 | { | |
8664 | char *tmptok; | |
8665 | ||
8666 | tok = end_tok + 1; | |
bbc13ae3 | 8667 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8668 | if (tok == tmptok) |
8669 | error (_("Junk after task keyword.")); | |
8670 | if (!valid_task_id (*task)) | |
b6199126 | 8671 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8672 | tok = tmptok; |
4a306c9a | 8673 | } |
e7e0cddf SS |
8674 | else if (rest) |
8675 | { | |
6f781ee3 | 8676 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8677 | return; |
e7e0cddf | 8678 | } |
018d34a4 VP |
8679 | else |
8680 | error (_("Junk at end of arguments.")); | |
8681 | } | |
8682 | } | |
8683 | ||
b5fa468f TBA |
8684 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8685 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8686 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8687 | for the description of these parameters and INPUT. */ | |
8688 | ||
8689 | static void | |
8690 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8691 | const char *input, |
8692 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8693 | int *thread, int *task, | |
8694 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8695 | { |
8696 | int num_failures = 0; | |
8697 | for (auto &sal : sals) | |
8698 | { | |
6f781ee3 | 8699 | gdb::unique_xmalloc_ptr<char> cond; |
b5fa468f TBA |
8700 | int thread_id = 0; |
8701 | int task_id = 0; | |
6f781ee3 | 8702 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8703 | |
8704 | /* Here we want to parse 'arg' to separate condition from thread | |
8705 | number. But because parsing happens in a context and the | |
8706 | contexts of sals might be different, try each until there is | |
8707 | success. Finding one successful parse is sufficient for our | |
8708 | goal. When setting the breakpoint we'll re-parse the | |
8709 | condition in the context of each sal. */ | |
8710 | try | |
8711 | { | |
8712 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8713 | &task_id, &remaining); | |
6f781ee3 | 8714 | *cond_string = std::move (cond); |
b5fa468f TBA |
8715 | *thread = thread_id; |
8716 | *task = task_id; | |
6f781ee3 | 8717 | *rest = std::move (remaining); |
b5fa468f TBA |
8718 | break; |
8719 | } | |
8720 | catch (const gdb_exception_error &e) | |
8721 | { | |
8722 | num_failures++; | |
8723 | /* If no sal remains, do not continue. */ | |
8724 | if (num_failures == sals.size ()) | |
8725 | throw; | |
8726 | } | |
8727 | } | |
8728 | } | |
8729 | ||
0fb4aa4b PA |
8730 | /* Decode a static tracepoint marker spec. */ |
8731 | ||
6c5b2ebe | 8732 | static std::vector<symtab_and_line> |
f00aae0f | 8733 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8734 | { |
f00aae0f KS |
8735 | const char *p = &(*arg_p)[3]; |
8736 | const char *endp; | |
0fb4aa4b | 8737 | |
f1735a53 | 8738 | p = skip_spaces (p); |
0fb4aa4b | 8739 | |
f1735a53 | 8740 | endp = skip_to_space (p); |
0fb4aa4b | 8741 | |
81b1e71c | 8742 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8743 | |
5d9310c4 SM |
8744 | std::vector<static_tracepoint_marker> markers |
8745 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8746 | if (markers.empty ()) | |
81b1e71c TT |
8747 | error (_("No known static tracepoint marker named %s"), |
8748 | marker_str.c_str ()); | |
0fb4aa4b | 8749 | |
6c5b2ebe | 8750 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8751 | sals.reserve (markers.size ()); |
0fb4aa4b | 8752 | |
5d9310c4 | 8753 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8754 | { |
5d9310c4 SM |
8755 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8756 | sal.pc = marker.address; | |
6c5b2ebe | 8757 | sals.push_back (sal); |
5d9310c4 | 8758 | } |
0fb4aa4b | 8759 | |
0fb4aa4b PA |
8760 | *arg_p = endp; |
8761 | return sals; | |
8762 | } | |
8763 | ||
bac7c5cf GB |
8764 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8765 | according to IS_TRACEPOINT. */ | |
8766 | ||
8767 | static const struct breakpoint_ops * | |
264f9890 PA |
8768 | breakpoint_ops_for_location_spec_type (enum location_spec_type locspec_type, |
8769 | bool is_tracepoint) | |
bac7c5cf GB |
8770 | { |
8771 | if (is_tracepoint) | |
8772 | { | |
264f9890 | 8773 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8774 | return &tracepoint_probe_breakpoint_ops; |
8775 | else | |
74421c0b | 8776 | return &code_breakpoint_ops; |
bac7c5cf GB |
8777 | } |
8778 | else | |
8779 | { | |
264f9890 | 8780 | if (locspec_type == PROBE_LOCATION_SPEC) |
bac7c5cf GB |
8781 | return &bkpt_probe_breakpoint_ops; |
8782 | else | |
74421c0b | 8783 | return &code_breakpoint_ops; |
bac7c5cf GB |
8784 | } |
8785 | } | |
8786 | ||
8787 | /* See breakpoint.h. */ | |
8788 | ||
8789 | const struct breakpoint_ops * | |
264f9890 PA |
8790 | breakpoint_ops_for_location_spec (const location_spec *locspec, |
8791 | bool is_tracepoint) | |
bac7c5cf | 8792 | { |
264f9890 PA |
8793 | if (locspec != nullptr) |
8794 | return (breakpoint_ops_for_location_spec_type | |
7464aeaa | 8795 | (locspec->type (), is_tracepoint)); |
74421c0b | 8796 | return &code_breakpoint_ops; |
bac7c5cf GB |
8797 | } |
8798 | ||
f00aae0f | 8799 | /* See breakpoint.h. */ |
0101ce28 | 8800 | |
8cdf0e15 VP |
8801 | int |
8802 | create_breakpoint (struct gdbarch *gdbarch, | |
264f9890 | 8803 | location_spec *locspec, |
e1e01040 PA |
8804 | const char *cond_string, |
8805 | int thread, const char *extra_string, | |
10a636cc | 8806 | bool force_condition, int parse_extra, |
0fb4aa4b | 8807 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
8808 | int ignore_count, |
8809 | enum auto_boolean pending_break_support, | |
c0a91b2b | 8810 | const struct breakpoint_ops *ops, |
44f238bb PA |
8811 | int from_tty, int enabled, int internal, |
8812 | unsigned flags) | |
c3f6f71d | 8813 | { |
7efd8fc2 | 8814 | struct linespec_result canonical; |
0101ce28 | 8815 | int pending = 0; |
4a306c9a | 8816 | int task = 0; |
86b17b60 | 8817 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 8818 | |
348d480f PA |
8819 | gdb_assert (ops != NULL); |
8820 | ||
f00aae0f KS |
8821 | /* If extra_string isn't useful, set it to NULL. */ |
8822 | if (extra_string != NULL && *extra_string == '\0') | |
8823 | extra_string = NULL; | |
8824 | ||
a70b8144 | 8825 | try |
b78a6381 | 8826 | { |
264f9890 | 8827 | ops->create_sals_from_location_spec (locspec, &canonical); |
b78a6381 | 8828 | } |
230d2906 | 8829 | catch (const gdb_exception_error &e) |
0101ce28 | 8830 | { |
492d29ea PA |
8831 | /* If caller is interested in rc value from parse, set |
8832 | value. */ | |
8833 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 8834 | { |
05ff989b AC |
8835 | /* If pending breakpoint support is turned off, throw |
8836 | error. */ | |
fa8d40ab JJ |
8837 | |
8838 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 8839 | throw; |
723a2275 VP |
8840 | |
8841 | exception_print (gdb_stderr, e); | |
fa8d40ab | 8842 | |
dda83cd7 | 8843 | /* If pending breakpoint support is auto query and the user |
05ff989b | 8844 | selects no, then simply return the error code. */ |
059fb39f | 8845 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
8846 | && !nquery (_("Make %s pending on future shared library load? "), |
8847 | bptype_string (type_wanted))) | |
fd9b8c24 | 8848 | return 0; |
fa8d40ab | 8849 | |
05ff989b AC |
8850 | /* At this point, either the user was queried about setting |
8851 | a pending breakpoint and selected yes, or pending | |
8852 | breakpoint behavior is on and thus a pending breakpoint | |
8853 | is defaulted on behalf of the user. */ | |
f00aae0f | 8854 | pending = 1; |
0101ce28 | 8855 | } |
492d29ea | 8856 | else |
eedc3f4f | 8857 | throw; |
0101ce28 | 8858 | } |
492d29ea | 8859 | |
6c5b2ebe | 8860 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 8861 | return 0; |
c3f6f71d | 8862 | |
c3f6f71d JM |
8863 | /* Resolve all line numbers to PC's and verify that the addresses |
8864 | are ok for the target. */ | |
0101ce28 | 8865 | if (!pending) |
f8eba3c6 | 8866 | { |
6c5b2ebe PA |
8867 | for (auto &lsal : canonical.lsals) |
8868 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 8869 | } |
c3f6f71d | 8870 | |
7a697b8d | 8871 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 8872 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 8873 | { |
6c5b2ebe PA |
8874 | for (const auto &lsal : canonical.lsals) |
8875 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 8876 | } |
7a697b8d | 8877 | |
c3f6f71d JM |
8878 | /* Verify that condition can be parsed, before setting any |
8879 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8880 | breakpoint. */ |
0101ce28 | 8881 | if (!pending) |
c3f6f71d | 8882 | { |
e1e01040 PA |
8883 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
8884 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
8885 | ||
f00aae0f | 8886 | if (parse_extra) |
dda83cd7 | 8887 | { |
6f781ee3 TT |
8888 | gdb::unique_xmalloc_ptr<char> rest; |
8889 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 8890 | |
6c5b2ebe | 8891 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 8892 | |
b5fa468f TBA |
8893 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
8894 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
8895 | cond_string_copy = std::move (cond); |
8896 | extra_string_copy = std::move (rest); | |
dda83cd7 | 8897 | } |
2f069f6f | 8898 | else |
dda83cd7 | 8899 | { |
f00aae0f KS |
8900 | if (type_wanted != bp_dprintf |
8901 | && extra_string != NULL && *extra_string != '\0') | |
8902 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 8903 | |
10a636cc TBA |
8904 | /* Check the validity of the condition. We should error out |
8905 | if the condition is invalid at all of the locations and | |
8906 | if it is not forced. In the PARSE_EXTRA case above, this | |
8907 | check is done when parsing the EXTRA_STRING. */ | |
8908 | if (cond_string != nullptr && !force_condition) | |
8909 | { | |
8910 | int num_failures = 0; | |
8911 | const linespec_sals &lsal = canonical.lsals[0]; | |
8912 | for (const auto &sal : lsal.sals) | |
8913 | { | |
8914 | const char *cond = cond_string; | |
8915 | try | |
8916 | { | |
8917 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
8918 | /* One success is sufficient to keep going. */ | |
8919 | break; | |
8920 | } | |
8921 | catch (const gdb_exception_error &) | |
8922 | { | |
8923 | num_failures++; | |
8924 | /* If this is the last sal, error out. */ | |
8925 | if (num_failures == lsal.sals.size ()) | |
8926 | throw; | |
8927 | } | |
8928 | } | |
8929 | } | |
8930 | ||
0878d0fa YQ |
8931 | /* Create a private copy of condition string. */ |
8932 | if (cond_string) | |
e1e01040 | 8933 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
8934 | /* Create a private copy of any extra string. */ |
8935 | if (extra_string) | |
e1e01040 | 8936 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 8937 | } |
0fb4aa4b | 8938 | |
52d361e1 | 8939 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
8940 | std::move (cond_string_copy), |
8941 | std::move (extra_string_copy), | |
8942 | type_wanted, | |
d9b3f62e | 8943 | tempflag ? disp_del : disp_donttouch, |
ef4848c7 | 8944 | thread, task, ignore_count, |
44f238bb | 8945 | from_tty, enabled, internal, flags); |
c906108c | 8946 | } |
0101ce28 JJ |
8947 | else |
8948 | { | |
73063f51 TT |
8949 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (gdbarch, |
8950 | type_wanted); | |
5c1ddcb6 | 8951 | b->locspec = locspec->clone (); |
bfccc43c | 8952 | |
f00aae0f KS |
8953 | if (parse_extra) |
8954 | b->cond_string = NULL; | |
e12c7713 MK |
8955 | else |
8956 | { | |
8957 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
8958 | b->cond_string.reset (cond_string != NULL |
8959 | ? xstrdup (cond_string) | |
8960 | : NULL); | |
15630549 | 8961 | b->thread = thread; |
e12c7713 | 8962 | } |
f00aae0f KS |
8963 | |
8964 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
8965 | b->extra_string.reset (extra_string != NULL |
8966 | ? xstrdup (extra_string) | |
8967 | : NULL); | |
0101ce28 | 8968 | b->ignore_count = ignore_count; |
0101ce28 | 8969 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8970 | b->condition_not_parsed = 1; |
41447f92 | 8971 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 8972 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 8973 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 8974 | b->pspace = current_program_space; |
8bea4e01 | 8975 | |
b270e6f9 | 8976 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
8977 | } |
8978 | ||
6c5b2ebe | 8979 | if (canonical.lsals.size () > 1) |
95a42b64 | 8980 | { |
3e43a32a MS |
8981 | warning (_("Multiple breakpoints were set.\nUse the " |
8982 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8983 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8984 | } |
8985 | ||
44702360 | 8986 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
8987 | |
8988 | return 1; | |
c3f6f71d | 8989 | } |
c906108c | 8990 | |
348d480f | 8991 | /* Set a breakpoint. |
72b2ff0e VP |
8992 | ARG is a string describing breakpoint address, |
8993 | condition, and thread. | |
8994 | FLAG specifies if a breakpoint is hardware on, | |
8995 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8996 | and BP_TEMPFLAG. */ | |
348d480f | 8997 | |
98deb0da | 8998 | static void |
f2fc3015 | 8999 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9000 | { |
72b2ff0e | 9001 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9002 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9003 | ? bp_hardware_breakpoint | |
9004 | : bp_breakpoint); | |
f00aae0f | 9005 | |
264f9890 PA |
9006 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
9007 | const struct breakpoint_ops *ops | |
9008 | = breakpoint_ops_for_location_spec (locspec.get (), | |
9009 | false /* is_tracepoint */); | |
c3f6f71d | 9010 | |
8cdf0e15 | 9011 | create_breakpoint (get_current_arch (), |
264f9890 | 9012 | locspec.get (), |
10a636cc | 9013 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9014 | tempflag, type_wanted, |
8cdf0e15 VP |
9015 | 0 /* Ignore count */, |
9016 | pending_break_support, | |
55aa24fb | 9017 | ops, |
8cdf0e15 | 9018 | from_tty, |
84f4c1fe | 9019 | 1 /* enabled */, |
44f238bb PA |
9020 | 0 /* internal */, |
9021 | 0); | |
c906108c SS |
9022 | } |
9023 | ||
c906108c SS |
9024 | /* Helper function for break_command_1 and disassemble_command. */ |
9025 | ||
9026 | void | |
fba45db2 | 9027 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9028 | { |
9029 | CORE_ADDR pc; | |
9030 | ||
9031 | if (sal->pc == 0 && sal->symtab != NULL) | |
9032 | { | |
9033 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9034 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9035 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9036 | sal->pc = pc; |
6a048695 | 9037 | |
4a64f543 | 9038 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9039 | number, then skip the function prologue if necessary. */ |
6a048695 | 9040 | if (sal->explicit_line) |
059acae7 | 9041 | skip_prologue_sal (sal); |
c906108c SS |
9042 | } |
9043 | ||
9044 | if (sal->section == 0 && sal->symtab != NULL) | |
9045 | { | |
346d1dfe | 9046 | const struct blockvector *bv; |
3977b71f | 9047 | const struct block *b; |
c5aa993b | 9048 | struct symbol *sym; |
c906108c | 9049 | |
43f3e411 | 9050 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9051 | sal->symtab->compunit ()); |
c906108c SS |
9052 | if (bv != NULL) |
9053 | { | |
7f0df278 | 9054 | sym = block_linkage_function (b); |
c906108c SS |
9055 | if (sym != NULL) |
9056 | { | |
3c86fae3 SM |
9057 | fixup_symbol_section (sym, sal->symtab->compunit ()->objfile ()); |
9058 | sal->section | |
9059 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9060 | } |
9061 | else | |
9062 | { | |
4a64f543 | 9063 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9064 | just have to look harder. This case can be executed |
9065 | if we have line numbers but no functions (as can | |
9066 | happen in assembly source). */ | |
c906108c | 9067 | |
5ed8105e | 9068 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9069 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9070 | |
5ed8105e | 9071 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9072 | if (msym.minsym) |
1db66e34 | 9073 | sal->section = msym.obj_section (); |
c906108c SS |
9074 | } |
9075 | } | |
9076 | } | |
9077 | } | |
9078 | ||
9079 | void | |
0b39b52e | 9080 | break_command (const char *arg, int from_tty) |
c906108c | 9081 | { |
db107f19 | 9082 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9083 | } |
9084 | ||
c906108c | 9085 | void |
0b39b52e | 9086 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9087 | { |
db107f19 | 9088 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9089 | } |
9090 | ||
c906108c | 9091 | static void |
0b39b52e | 9092 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9093 | { |
db107f19 | 9094 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9095 | } |
9096 | ||
9097 | static void | |
0b39b52e | 9098 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9099 | { |
db107f19 | 9100 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9101 | } |
9102 | ||
e7e0cddf SS |
9103 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9104 | with a prewired command list consisting of a single output command, | |
9105 | built from extra arguments supplied on the dprintf command | |
9106 | line. */ | |
9107 | ||
da821c7b | 9108 | static void |
0b39b52e | 9109 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9110 | { |
264f9890 | 9111 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f KS |
9112 | |
9113 | /* If non-NULL, ARG should have been advanced past the location; | |
9114 | the next character must be ','. */ | |
9115 | if (arg != NULL) | |
9116 | { | |
9117 | if (arg[0] != ',' || arg[1] == '\0') | |
9118 | error (_("Format string required")); | |
9119 | else | |
9120 | { | |
9121 | /* Skip the comma. */ | |
9122 | ++arg; | |
9123 | } | |
9124 | } | |
9125 | ||
e7e0cddf | 9126 | create_breakpoint (get_current_arch (), |
264f9890 | 9127 | locspec.get (), |
10a636cc | 9128 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9129 | 0, bp_dprintf, |
9130 | 0 /* Ignore count */, | |
9131 | pending_break_support, | |
74421c0b | 9132 | &code_breakpoint_ops, |
e7e0cddf SS |
9133 | from_tty, |
9134 | 1 /* enabled */, | |
9135 | 0 /* internal */, | |
9136 | 0); | |
9137 | } | |
9138 | ||
d3ce09f5 | 9139 | static void |
0b39b52e | 9140 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9141 | { |
9142 | error (_("May only run agent-printf on the target")); | |
9143 | } | |
9144 | ||
ec45bb67 | 9145 | /* Implement the "breakpoint_hit" method for ranged breakpoints. */ |
f1310107 | 9146 | |
ec45bb67 TT |
9147 | int |
9148 | ranged_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
9149 | const address_space *aspace, | |
9150 | CORE_ADDR bp_addr, | |
9151 | const target_waitstatus &ws) | |
f1310107 | 9152 | { |
c272a98c SM |
9153 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9154 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9155 | return 0; |
9156 | ||
f1310107 TJB |
9157 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9158 | bl->length, aspace, bp_addr); | |
9159 | } | |
9160 | ||
ec45bb67 | 9161 | /* Implement the "resources_needed" method for ranged breakpoints. */ |
f1310107 | 9162 | |
ec45bb67 TT |
9163 | int |
9164 | ranged_breakpoint::resources_needed (const struct bp_location *bl) | |
f1310107 TJB |
9165 | { |
9166 | return target_ranged_break_num_registers (); | |
9167 | } | |
9168 | ||
ec45bb67 | 9169 | /* Implement the "print_it" method for ranged breakpoints. */ |
f1310107 | 9170 | |
ec45bb67 | 9171 | enum print_stop_action |
7bd86313 | 9172 | ranged_breakpoint::print_it (const bpstat *bs) const |
f1310107 | 9173 | { |
ec45bb67 | 9174 | struct bp_location *bl = loc; |
79a45e25 | 9175 | struct ui_out *uiout = current_uiout; |
f1310107 | 9176 | |
ec45bb67 | 9177 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 TJB |
9178 | |
9179 | /* Ranged breakpoints have only one location. */ | |
9180 | gdb_assert (bl && bl->next == NULL); | |
9181 | ||
ec45bb67 | 9182 | annotate_breakpoint (number); |
f303dbd6 PA |
9183 | |
9184 | maybe_print_thread_hit_breakpoint (uiout); | |
9185 | ||
ec45bb67 | 9186 | if (disposition == disp_del) |
112e8700 | 9187 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9188 | else |
112e8700 SM |
9189 | uiout->text ("Ranged breakpoint "); |
9190 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9191 | { |
112e8700 | 9192 | uiout->field_string ("reason", |
f1310107 | 9193 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
ec45bb67 | 9194 | uiout->field_string ("disp", bpdisp_text (disposition)); |
f1310107 | 9195 | } |
ec45bb67 | 9196 | uiout->field_signed ("bkptno", number); |
112e8700 | 9197 | uiout->text (", "); |
f1310107 TJB |
9198 | |
9199 | return PRINT_SRC_AND_LOC; | |
9200 | } | |
9201 | ||
ec45bb67 | 9202 | /* Implement the "print_one" method for ranged breakpoints. */ |
f1310107 | 9203 | |
ec45bb67 | 9204 | bool |
a67bcaba | 9205 | ranged_breakpoint::print_one (bp_location **last_loc) const |
f1310107 | 9206 | { |
ec45bb67 | 9207 | struct bp_location *bl = loc; |
f1310107 | 9208 | struct value_print_options opts; |
79a45e25 | 9209 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9210 | |
9211 | /* Ranged breakpoints have only one location. */ | |
9212 | gdb_assert (bl && bl->next == NULL); | |
9213 | ||
9214 | get_user_print_options (&opts); | |
9215 | ||
9216 | if (opts.addressprint) | |
9217 | /* We don't print the address range here, it will be printed later | |
f7968895 | 9218 | by ranged_breakpoint::print_one_detail. */ |
112e8700 | 9219 | uiout->field_skip ("addr"); |
f1310107 | 9220 | annotate_field (5); |
ec45bb67 | 9221 | print_breakpoint_location (this, bl); |
f1310107 | 9222 | *last_loc = bl; |
c01e038b TT |
9223 | |
9224 | return true; | |
f1310107 TJB |
9225 | } |
9226 | ||
ec45bb67 | 9227 | /* Implement the "print_one_detail" method for ranged breakpoints. */ |
f1310107 | 9228 | |
ec45bb67 TT |
9229 | void |
9230 | ranged_breakpoint::print_one_detail (struct ui_out *uiout) const | |
f1310107 TJB |
9231 | { |
9232 | CORE_ADDR address_start, address_end; | |
ec45bb67 | 9233 | struct bp_location *bl = loc; |
d7e74731 | 9234 | string_file stb; |
f1310107 TJB |
9235 | |
9236 | gdb_assert (bl); | |
9237 | ||
9238 | address_start = bl->address; | |
9239 | address_end = address_start + bl->length - 1; | |
9240 | ||
112e8700 | 9241 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9242 | stb.printf ("[%s, %s]", |
9243 | print_core_address (bl->gdbarch, address_start), | |
9244 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9245 | uiout->field_stream ("addr", stb); |
9246 | uiout->text ("\n"); | |
f1310107 TJB |
9247 | } |
9248 | ||
ec45bb67 | 9249 | /* Implement the "print_mention" method for ranged breakpoints. */ |
f1310107 | 9250 | |
ec45bb67 | 9251 | void |
b713485d | 9252 | ranged_breakpoint::print_mention () const |
f1310107 | 9253 | { |
ec45bb67 | 9254 | struct bp_location *bl = loc; |
79a45e25 | 9255 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9256 | |
9257 | gdb_assert (bl); | |
ec45bb67 | 9258 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 | 9259 | |
2d33446d | 9260 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
ec45bb67 | 9261 | number, paddress (bl->gdbarch, bl->address), |
2d33446d | 9262 | paddress (bl->gdbarch, bl->address + bl->length - 1)); |
f1310107 TJB |
9263 | } |
9264 | ||
ec45bb67 | 9265 | /* Implement the "print_recreate" method for ranged breakpoints. */ |
f1310107 | 9266 | |
ec45bb67 | 9267 | void |
4d1ae558 | 9268 | ranged_breakpoint::print_recreate (struct ui_file *fp) const |
f1310107 | 9269 | { |
6cb06a8c | 9270 | gdb_printf (fp, "break-range %s, %s", |
709438c7 PA |
9271 | locspec->to_string (), |
9272 | locspec_range_end->to_string ()); | |
04d0163c | 9273 | print_recreate_thread (fp); |
f1310107 TJB |
9274 | } |
9275 | ||
f1310107 TJB |
9276 | /* Find the address where the end of the breakpoint range should be |
9277 | placed, given the SAL of the end of the range. This is so that if | |
9278 | the user provides a line number, the end of the range is set to the | |
9279 | last instruction of the given line. */ | |
9280 | ||
9281 | static CORE_ADDR | |
9282 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9283 | { | |
9284 | CORE_ADDR end; | |
9285 | ||
9286 | /* If the user provided a PC value, use it. Otherwise, | |
9287 | find the address of the end of the given location. */ | |
9288 | if (sal.explicit_pc) | |
9289 | end = sal.pc; | |
9290 | else | |
9291 | { | |
9292 | int ret; | |
9293 | CORE_ADDR start; | |
9294 | ||
9295 | ret = find_line_pc_range (sal, &start, &end); | |
9296 | if (!ret) | |
9297 | error (_("Could not find location of the end of the range.")); | |
9298 | ||
9299 | /* find_line_pc_range returns the start of the next line. */ | |
9300 | end--; | |
9301 | } | |
9302 | ||
9303 | return end; | |
9304 | } | |
9305 | ||
9306 | /* Implement the "break-range" CLI command. */ | |
9307 | ||
9308 | static void | |
0b39b52e | 9309 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9310 | { |
f2fc3015 | 9311 | const char *arg_start; |
f1310107 TJB |
9312 | struct linespec_result canonical_start, canonical_end; |
9313 | int bp_count, can_use_bp, length; | |
9314 | CORE_ADDR end; | |
f1310107 TJB |
9315 | |
9316 | /* We don't support software ranged breakpoints. */ | |
9317 | if (target_ranged_break_num_registers () < 0) | |
9318 | error (_("This target does not support hardware ranged breakpoints.")); | |
9319 | ||
9320 | bp_count = hw_breakpoint_used_count (); | |
9321 | bp_count += target_ranged_break_num_registers (); | |
9322 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9323 | bp_count, 0); | |
9324 | if (can_use_bp < 0) | |
9325 | error (_("Hardware breakpoints used exceeds limit.")); | |
9326 | ||
f8eba3c6 | 9327 | arg = skip_spaces (arg); |
f1310107 TJB |
9328 | if (arg == NULL || arg[0] == '\0') |
9329 | error(_("No address range specified.")); | |
9330 | ||
f8eba3c6 | 9331 | arg_start = arg; |
264f9890 PA |
9332 | location_spec_up start_locspec |
9333 | = string_to_location_spec (&arg, current_language); | |
9334 | parse_breakpoint_sals (start_locspec.get (), &canonical_start); | |
f1310107 TJB |
9335 | |
9336 | if (arg[0] != ',') | |
9337 | error (_("Too few arguments.")); | |
6c5b2ebe | 9338 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9339 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9340 | |
6c5b2ebe | 9341 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9342 | |
6c5b2ebe PA |
9343 | if (canonical_start.lsals.size () > 1 |
9344 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9345 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9346 | ||
6c5b2ebe | 9347 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9348 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9349 | |
9350 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9351 | arg = skip_spaces (arg); |
f1310107 | 9352 | |
264f9890 | 9353 | /* Parse the end location specification. */ |
f1310107 | 9354 | |
f1310107 TJB |
9355 | arg_start = arg; |
9356 | ||
f8eba3c6 | 9357 | /* We call decode_line_full directly here instead of using |
264f9890 PA |
9358 | parse_breakpoint_sals because we need to specify the start |
9359 | location spec's symtab and line as the default symtab and line | |
9360 | for the end of the range. This makes it possible to have ranges | |
9361 | like "foo.c:27, +14", where +14 means 14 lines from the start | |
9362 | location spec. */ | |
9363 | location_spec_up end_locspec | |
9364 | = string_to_location_spec (&arg, current_language); | |
9365 | decode_line_full (end_locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9366 | sal_start.symtab, sal_start.line, |
9367 | &canonical_end, NULL, NULL); | |
9368 | ||
6c5b2ebe | 9369 | if (canonical_end.lsals.empty ()) |
f1310107 | 9370 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9371 | |
6c5b2ebe PA |
9372 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9373 | if (canonical_end.lsals.size () > 1 | |
9374 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9375 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9376 | ||
6c5b2ebe | 9377 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9378 | |
9379 | end = find_breakpoint_range_end (sal_end); | |
9380 | if (sal_start.pc > end) | |
177b42fe | 9381 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9382 | |
9383 | length = end - sal_start.pc + 1; | |
9384 | if (length < 0) | |
9385 | /* Length overflowed. */ | |
9386 | error (_("Address range too large.")); | |
9387 | else if (length == 1) | |
9388 | { | |
9389 | /* This range is simple enough to be handled by | |
9390 | the `hbreak' command. */ | |
81b1e71c | 9391 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9392 | |
9393 | return; | |
9394 | } | |
9395 | ||
b925bf21 PA |
9396 | /* Now set up the breakpoint and install it. */ |
9397 | ||
9398 | std::unique_ptr<breakpoint> br | |
9399 | (new ranged_breakpoint (get_current_arch (), | |
9400 | sal_start, length, | |
264f9890 PA |
9401 | std::move (start_locspec), |
9402 | std::move (end_locspec))); | |
f1310107 | 9403 | |
27a62b43 | 9404 | install_breakpoint (false, std::move (br), true); |
f1310107 TJB |
9405 | } |
9406 | ||
4a64f543 MS |
9407 | /* Return non-zero if EXP is verified as constant. Returned zero |
9408 | means EXP is variable. Also the constant detection may fail for | |
9409 | some constant expressions and in such case still falsely return | |
9410 | zero. */ | |
2e6e3d9c | 9411 | |
dab72643 | 9412 | static bool |
65d79d4b SDJ |
9413 | watchpoint_exp_is_const (const struct expression *exp) |
9414 | { | |
1eaebe02 | 9415 | return exp->op->constant_p (); |
65d79d4b SDJ |
9416 | } |
9417 | ||
3a292923 | 9418 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9419 | |
3a292923 TT |
9420 | void |
9421 | watchpoint::re_set () | |
348d480f PA |
9422 | { |
9423 | /* Watchpoint can be either on expression using entirely global | |
9424 | variables, or it can be on local variables. | |
9425 | ||
9426 | Watchpoints of the first kind are never auto-deleted, and even | |
9427 | persist across program restarts. Since they can use variables | |
9428 | from shared libraries, we need to reparse expression as libraries | |
9429 | are loaded and unloaded. | |
9430 | ||
9431 | Watchpoints on local variables can also change meaning as result | |
9432 | of solib event. For example, if a watchpoint uses both a local | |
9433 | and a global variables in expression, it's a local watchpoint, | |
9434 | but unloading of a shared library will make the expression | |
9435 | invalid. This is not a very common use case, but we still | |
9436 | re-evaluate expression, to avoid surprises to the user. | |
9437 | ||
9438 | Note that for local watchpoints, we re-evaluate it only if | |
9439 | watchpoints frame id is still valid. If it's not, it means the | |
9440 | watchpoint is out of scope and will be deleted soon. In fact, | |
9441 | I'm not sure we'll ever be called in this case. | |
9442 | ||
9443 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9444 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9445 | |
3a5c3e22 PA |
9446 | Don't do anything about disabled watchpoints, since they will be |
9447 | reevaluated again when enabled. */ | |
3a292923 | 9448 | update_watchpoint (this, 1 /* reparse */); |
348d480f PA |
9449 | } |
9450 | ||
3a292923 | 9451 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9452 | |
3a292923 TT |
9453 | int |
9454 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9455 | { |
3a292923 | 9456 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9457 | |
9458 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9459 | cond_exp.get ()); |
77b06cd7 TJB |
9460 | } |
9461 | ||
3a292923 | 9462 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9463 | |
3a292923 TT |
9464 | int |
9465 | watchpoint::remove_location (struct bp_location *bl, | |
9466 | enum remove_bp_reason reason) | |
77b06cd7 | 9467 | { |
3a292923 | 9468 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9469 | |
9470 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9471 | cond_exp.get ()); |
e09342b5 TJB |
9472 | } |
9473 | ||
3a292923 TT |
9474 | int |
9475 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9476 | const address_space *aspace, CORE_ADDR bp_addr, | |
9477 | const target_waitstatus &ws) | |
e09342b5 | 9478 | { |
348d480f | 9479 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9480 | |
348d480f PA |
9481 | /* Continuable hardware watchpoints are treated as non-existent if the |
9482 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9483 | some data address). Otherwise gdb won't stop on a break instruction | |
9484 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9485 | been defined. Also skip watchpoints which we know did not trigger | |
9486 | (did not match the data address). */ | |
9487 | if (is_hardware_watchpoint (b) | |
3a292923 | 9488 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9489 | return 0; |
9c06b0b4 | 9490 | |
348d480f | 9491 | return 1; |
9c06b0b4 TJB |
9492 | } |
9493 | ||
3a292923 TT |
9494 | void |
9495 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9496 | { |
348d480f | 9497 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9498 | |
348d480f | 9499 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9500 | } |
9501 | ||
3a292923 TT |
9502 | /* Implement the "resources_needed" method for hardware |
9503 | watchpoints. */ | |
9c06b0b4 | 9504 | |
3a292923 TT |
9505 | int |
9506 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9507 | { |
3a292923 | 9508 | int length = exact? 1 : bl->length; |
348d480f PA |
9509 | |
9510 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9511 | } |
9512 | ||
3a292923 TT |
9513 | /* Implement the "works_in_software_mode" method for hardware |
9514 | watchpoints. */ | |
9c06b0b4 | 9515 | |
5a61e176 | 9516 | bool |
3a292923 | 9517 | watchpoint::works_in_software_mode () const |
9c06b0b4 | 9518 | { |
efa80663 | 9519 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9520 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9521 | } |
9522 | ||
3a292923 | 9523 | enum print_stop_action |
7bd86313 | 9524 | watchpoint::print_it (const bpstat *bs) const |
9c06b0b4 | 9525 | { |
348d480f | 9526 | struct breakpoint *b; |
348d480f | 9527 | enum print_stop_action result; |
79a45e25 | 9528 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9529 | |
9530 | gdb_assert (bs->bp_location_at != NULL); | |
9531 | ||
348d480f PA |
9532 | b = bs->breakpoint_at; |
9533 | ||
f303dbd6 PA |
9534 | annotate_watchpoint (b->number); |
9535 | maybe_print_thread_hit_breakpoint (uiout); | |
9536 | ||
d7e74731 PA |
9537 | string_file stb; |
9538 | ||
76f9c9cf | 9539 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9540 | switch (b->type) |
9541 | { | |
348d480f | 9542 | case bp_watchpoint: |
9c06b0b4 | 9543 | case bp_hardware_watchpoint: |
112e8700 SM |
9544 | if (uiout->is_mi_like_p ()) |
9545 | uiout->field_string | |
9546 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9547 | mention (b); |
76f9c9cf | 9548 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9549 | uiout->text ("\nOld value = "); |
850645cf | 9550 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9551 | uiout->field_stream ("old", stb); |
9552 | uiout->text ("\nNew value = "); | |
3a292923 | 9553 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9554 | uiout->field_stream ("new", stb); |
9555 | uiout->text ("\n"); | |
348d480f PA |
9556 | /* More than one watchpoint may have been triggered. */ |
9557 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9558 | break; |
9559 | ||
9560 | case bp_read_watchpoint: | |
112e8700 SM |
9561 | if (uiout->is_mi_like_p ()) |
9562 | uiout->field_string | |
9563 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9564 | mention (b); |
76f9c9cf | 9565 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9566 | uiout->text ("\nValue = "); |
3a292923 | 9567 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9568 | uiout->field_stream ("value", stb); |
9569 | uiout->text ("\n"); | |
348d480f | 9570 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9571 | break; |
9572 | ||
9573 | case bp_access_watchpoint: | |
348d480f PA |
9574 | if (bs->old_val != NULL) |
9575 | { | |
112e8700 SM |
9576 | if (uiout->is_mi_like_p ()) |
9577 | uiout->field_string | |
9578 | ("reason", | |
348d480f PA |
9579 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9580 | mention (b); | |
76f9c9cf | 9581 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9582 | uiout->text ("\nOld value = "); |
850645cf | 9583 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9584 | uiout->field_stream ("old", stb); |
9585 | uiout->text ("\nNew value = "); | |
348d480f PA |
9586 | } |
9587 | else | |
9588 | { | |
9589 | mention (b); | |
112e8700 SM |
9590 | if (uiout->is_mi_like_p ()) |
9591 | uiout->field_string | |
9592 | ("reason", | |
348d480f | 9593 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9594 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9595 | uiout->text ("\nValue = "); |
348d480f | 9596 | } |
3a292923 | 9597 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9598 | uiout->field_stream ("new", stb); |
9599 | uiout->text ("\n"); | |
348d480f | 9600 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9601 | break; |
9602 | default: | |
348d480f | 9603 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9604 | } |
9605 | ||
348d480f PA |
9606 | return result; |
9607 | } | |
9608 | ||
3a292923 | 9609 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9610 | |
3a292923 | 9611 | void |
b713485d | 9612 | watchpoint::print_mention () const |
348d480f | 9613 | { |
79a45e25 | 9614 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9615 | const char *tuple_name; |
348d480f | 9616 | |
3a292923 | 9617 | switch (type) |
348d480f PA |
9618 | { |
9619 | case bp_watchpoint: | |
112e8700 | 9620 | uiout->text ("Watchpoint "); |
46b9c129 | 9621 | tuple_name = "wpt"; |
348d480f PA |
9622 | break; |
9623 | case bp_hardware_watchpoint: | |
112e8700 | 9624 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9625 | tuple_name = "wpt"; |
348d480f PA |
9626 | break; |
9627 | case bp_read_watchpoint: | |
112e8700 | 9628 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9629 | tuple_name = "hw-rwpt"; |
348d480f PA |
9630 | break; |
9631 | case bp_access_watchpoint: | |
112e8700 | 9632 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9633 | tuple_name = "hw-awpt"; |
348d480f PA |
9634 | break; |
9635 | default: | |
9636 | internal_error (__FILE__, __LINE__, | |
9637 | _("Invalid hardware watchpoint type.")); | |
9638 | } | |
9639 | ||
46b9c129 | 9640 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9641 | uiout->field_signed ("number", number); |
112e8700 | 9642 | uiout->text (": "); |
3a292923 | 9643 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9644 | } |
9645 | ||
3a292923 | 9646 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9647 | |
3a292923 | 9648 | void |
4d1ae558 | 9649 | watchpoint::print_recreate (struct ui_file *fp) const |
348d480f | 9650 | { |
3a292923 | 9651 | switch (type) |
348d480f PA |
9652 | { |
9653 | case bp_watchpoint: | |
9654 | case bp_hardware_watchpoint: | |
6cb06a8c | 9655 | gdb_printf (fp, "watch"); |
348d480f PA |
9656 | break; |
9657 | case bp_read_watchpoint: | |
6cb06a8c | 9658 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9659 | break; |
9660 | case bp_access_watchpoint: | |
6cb06a8c | 9661 | gdb_printf (fp, "awatch"); |
348d480f PA |
9662 | break; |
9663 | default: | |
9664 | internal_error (__FILE__, __LINE__, | |
9665 | _("Invalid watchpoint type.")); | |
9666 | } | |
9667 | ||
3a292923 | 9668 | gdb_printf (fp, " %s", exp_string.get ()); |
04d0163c | 9669 | print_recreate_thread (fp); |
348d480f PA |
9670 | } |
9671 | ||
3a292923 | 9672 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9673 | |
a6860f3a | 9674 | bool |
3a292923 | 9675 | watchpoint::explains_signal (enum gdb_signal sig) |
427cd150 TT |
9676 | { |
9677 | /* A software watchpoint cannot cause a signal other than | |
9678 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9679 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
a6860f3a | 9680 | return false; |
427cd150 | 9681 | |
a6860f3a | 9682 | return true; |
427cd150 TT |
9683 | } |
9684 | ||
3a292923 TT |
9685 | struct masked_watchpoint : public watchpoint |
9686 | { | |
73063f51 TT |
9687 | using watchpoint::watchpoint; |
9688 | ||
3a292923 TT |
9689 | int insert_location (struct bp_location *) override; |
9690 | int remove_location (struct bp_location *, | |
9691 | enum remove_bp_reason reason) override; | |
9692 | int resources_needed (const struct bp_location *) override; | |
5a61e176 | 9693 | bool works_in_software_mode () const override; |
7bd86313 | 9694 | enum print_stop_action print_it (const bpstat *bs) const override; |
3a292923 | 9695 | void print_one_detail (struct ui_out *) const override; |
b713485d | 9696 | void print_mention () const override; |
4d1ae558 | 9697 | void print_recreate (struct ui_file *fp) const override; |
3a292923 | 9698 | }; |
348d480f | 9699 | |
3a292923 | 9700 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9701 | |
3a292923 TT |
9702 | int |
9703 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9704 | { |
3a292923 | 9705 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9706 | bl->watchpoint_type); |
9707 | } | |
9708 | ||
3a292923 | 9709 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9710 | |
3a292923 TT |
9711 | int |
9712 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9713 | enum remove_bp_reason reason) | |
348d480f | 9714 | { |
3a292923 | 9715 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9716 | bl->watchpoint_type); |
348d480f PA |
9717 | } |
9718 | ||
3a292923 TT |
9719 | /* Implement the "resources_needed" method for masked hardware |
9720 | watchpoints. */ | |
348d480f | 9721 | |
3a292923 TT |
9722 | int |
9723 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9724 | { |
3a292923 | 9725 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9726 | } |
9727 | ||
3a292923 TT |
9728 | /* Implement the "works_in_software_mode" method for masked hardware |
9729 | watchpoints. */ | |
348d480f | 9730 | |
5a61e176 | 9731 | bool |
3a292923 | 9732 | masked_watchpoint::works_in_software_mode () const |
348d480f | 9733 | { |
5a61e176 | 9734 | return false; |
348d480f PA |
9735 | } |
9736 | ||
3a292923 TT |
9737 | /* Implement the "print_it" method for masked hardware |
9738 | watchpoints. */ | |
348d480f | 9739 | |
3a292923 | 9740 | enum print_stop_action |
7bd86313 | 9741 | masked_watchpoint::print_it (const bpstat *bs) const |
348d480f PA |
9742 | { |
9743 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9744 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9745 | |
9746 | /* Masked watchpoints have only one location. */ | |
9747 | gdb_assert (b->loc && b->loc->next == NULL); | |
9748 | ||
f303dbd6 PA |
9749 | annotate_watchpoint (b->number); |
9750 | maybe_print_thread_hit_breakpoint (uiout); | |
9751 | ||
348d480f PA |
9752 | switch (b->type) |
9753 | { | |
9754 | case bp_hardware_watchpoint: | |
112e8700 SM |
9755 | if (uiout->is_mi_like_p ()) |
9756 | uiout->field_string | |
9757 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9758 | break; |
9759 | ||
9760 | case bp_read_watchpoint: | |
112e8700 SM |
9761 | if (uiout->is_mi_like_p ()) |
9762 | uiout->field_string | |
9763 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9764 | break; |
9765 | ||
9766 | case bp_access_watchpoint: | |
112e8700 SM |
9767 | if (uiout->is_mi_like_p ()) |
9768 | uiout->field_string | |
9769 | ("reason", | |
348d480f PA |
9770 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9771 | break; | |
9772 | default: | |
9773 | internal_error (__FILE__, __LINE__, | |
9774 | _("Invalid hardware watchpoint type.")); | |
9775 | } | |
9776 | ||
9777 | mention (b); | |
112e8700 | 9778 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9779 | Check the underlying instruction at PC for the memory\n\ |
9780 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9781 | uiout->text ("\n"); |
9c06b0b4 TJB |
9782 | |
9783 | /* More than one watchpoint may have been triggered. */ | |
9784 | return PRINT_UNKNOWN; | |
9785 | } | |
9786 | ||
3a292923 TT |
9787 | /* Implement the "print_one_detail" method for masked hardware |
9788 | watchpoints. */ | |
9c06b0b4 | 9789 | |
3a292923 TT |
9790 | void |
9791 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9792 | { |
9793 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9794 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9795 | |
112e8700 | 9796 | uiout->text ("\tmask "); |
3a292923 | 9797 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 9798 | uiout->text ("\n"); |
9c06b0b4 TJB |
9799 | } |
9800 | ||
3a292923 TT |
9801 | /* Implement the "print_mention" method for masked hardware |
9802 | watchpoints. */ | |
9c06b0b4 | 9803 | |
3a292923 | 9804 | void |
b713485d | 9805 | masked_watchpoint::print_mention () const |
9c06b0b4 | 9806 | { |
79a45e25 | 9807 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9808 | const char *tuple_name; |
9c06b0b4 | 9809 | |
3a292923 | 9810 | switch (type) |
9c06b0b4 TJB |
9811 | { |
9812 | case bp_hardware_watchpoint: | |
112e8700 | 9813 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 9814 | tuple_name = "wpt"; |
9c06b0b4 TJB |
9815 | break; |
9816 | case bp_read_watchpoint: | |
112e8700 | 9817 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 9818 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
9819 | break; |
9820 | case bp_access_watchpoint: | |
112e8700 | 9821 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 9822 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
9823 | break; |
9824 | default: | |
9825 | internal_error (__FILE__, __LINE__, | |
9826 | _("Invalid hardware watchpoint type.")); | |
9827 | } | |
9828 | ||
46b9c129 | 9829 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9830 | uiout->field_signed ("number", number); |
112e8700 | 9831 | uiout->text (": "); |
3a292923 | 9832 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
9833 | } |
9834 | ||
3a292923 TT |
9835 | /* Implement the "print_recreate" method for masked hardware |
9836 | watchpoints. */ | |
9c06b0b4 | 9837 | |
3a292923 | 9838 | void |
4d1ae558 | 9839 | masked_watchpoint::print_recreate (struct ui_file *fp) const |
9c06b0b4 | 9840 | { |
3a292923 | 9841 | switch (type) |
9c06b0b4 TJB |
9842 | { |
9843 | case bp_hardware_watchpoint: | |
6cb06a8c | 9844 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
9845 | break; |
9846 | case bp_read_watchpoint: | |
6cb06a8c | 9847 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
9848 | break; |
9849 | case bp_access_watchpoint: | |
6cb06a8c | 9850 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
9851 | break; |
9852 | default: | |
9853 | internal_error (__FILE__, __LINE__, | |
9854 | _("Invalid hardware watchpoint type.")); | |
9855 | } | |
9856 | ||
3a292923 TT |
9857 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
9858 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
04d0163c | 9859 | print_recreate_thread (fp); |
9c06b0b4 TJB |
9860 | } |
9861 | ||
9c06b0b4 TJB |
9862 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
9863 | ||
f2478a7e | 9864 | static bool |
9c06b0b4 TJB |
9865 | is_masked_watchpoint (const struct breakpoint *b) |
9866 | { | |
3a292923 | 9867 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
9868 | } |
9869 | ||
53a5351d | 9870 | /* accessflag: hw_write: watch write, |
dda83cd7 | 9871 | hw_read: watch read, |
53a5351d | 9872 | hw_access: watch access (read or write) */ |
c906108c | 9873 | static void |
bbc13ae3 | 9874 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 9875 | bool just_location, bool internal) |
c906108c | 9876 | { |
c1fc2657 | 9877 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 9878 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 9879 | struct value *result; |
bb9d5f81 | 9880 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
9881 | const char *exp_start = NULL; |
9882 | const char *exp_end = NULL; | |
9883 | const char *tok, *end_tok; | |
9c06b0b4 | 9884 | int toklen = -1; |
bbc13ae3 KS |
9885 | const char *cond_start = NULL; |
9886 | const char *cond_end = NULL; | |
c906108c | 9887 | enum bptype bp_type; |
37e4754d | 9888 | int thread = -1; |
9c06b0b4 TJB |
9889 | /* Flag to indicate whether we are going to use masks for |
9890 | the hardware watchpoint. */ | |
2e362716 | 9891 | bool use_mask = false; |
9c06b0b4 | 9892 | CORE_ADDR mask = 0; |
8a18382f | 9893 | int task = 0; |
c906108c | 9894 | |
37e4754d LM |
9895 | /* Make sure that we actually have parameters to parse. */ |
9896 | if (arg != NULL && arg[0] != '\0') | |
9897 | { | |
bbc13ae3 KS |
9898 | const char *value_start; |
9899 | ||
9900 | exp_end = arg + strlen (arg); | |
37e4754d | 9901 | |
9c06b0b4 TJB |
9902 | /* Look for "parameter value" pairs at the end |
9903 | of the arguments string. */ | |
bbc13ae3 | 9904 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
9905 | { |
9906 | /* Skip whitespace at the end of the argument list. */ | |
9907 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9908 | tok--; | |
9909 | ||
9910 | /* Find the beginning of the last token. | |
9911 | This is the value of the parameter. */ | |
9912 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9913 | tok--; | |
9914 | value_start = tok + 1; | |
9915 | ||
9916 | /* Skip whitespace. */ | |
9917 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9918 | tok--; | |
9919 | ||
9920 | end_tok = tok; | |
9921 | ||
9922 | /* Find the beginning of the second to last token. | |
9923 | This is the parameter itself. */ | |
9924 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9925 | tok--; | |
9926 | tok++; | |
9927 | toklen = end_tok - tok + 1; | |
9928 | ||
61012eef | 9929 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 9930 | { |
5d5658a1 | 9931 | struct thread_info *thr; |
9c06b0b4 TJB |
9932 | /* At this point we've found a "thread" token, which means |
9933 | the user is trying to set a watchpoint that triggers | |
9934 | only in a specific thread. */ | |
5d5658a1 | 9935 | const char *endp; |
37e4754d | 9936 | |
9c06b0b4 TJB |
9937 | if (thread != -1) |
9938 | error(_("You can specify only one thread.")); | |
37e4754d | 9939 | |
9c06b0b4 | 9940 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 9941 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 9942 | |
5d5658a1 | 9943 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 9944 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 9945 | invalid_thread_id_error (value_start); |
9c06b0b4 | 9946 | |
5d5658a1 | 9947 | thread = thr->global_num; |
9c06b0b4 | 9948 | } |
8a18382f TT |
9949 | else if (toklen == 4 && startswith (tok, "task")) |
9950 | { | |
9951 | char *tmp; | |
9952 | ||
9953 | task = strtol (value_start, &tmp, 0); | |
9954 | if (tmp == value_start) | |
9955 | error (_("Junk after task keyword.")); | |
9956 | if (!valid_task_id (task)) | |
9957 | error (_("Unknown task %d."), task); | |
9958 | } | |
61012eef | 9959 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
9960 | { |
9961 | /* We've found a "mask" token, which means the user wants to | |
9962 | create a hardware watchpoint that is going to have the mask | |
9963 | facility. */ | |
9964 | struct value *mask_value, *mark; | |
37e4754d | 9965 | |
9c06b0b4 TJB |
9966 | if (use_mask) |
9967 | error(_("You can specify only one mask.")); | |
37e4754d | 9968 | |
2e362716 | 9969 | use_mask = just_location = true; |
37e4754d | 9970 | |
9c06b0b4 TJB |
9971 | mark = value_mark (); |
9972 | mask_value = parse_to_comma_and_eval (&value_start); | |
9973 | mask = value_as_address (mask_value); | |
9974 | value_free_to_mark (mark); | |
9975 | } | |
9976 | else | |
9977 | /* We didn't recognize what we found. We should stop here. */ | |
9978 | break; | |
37e4754d | 9979 | |
9c06b0b4 TJB |
9980 | /* Truncate the string and get rid of the "parameter value" pair before |
9981 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 9982 | exp_end = tok; |
9c06b0b4 | 9983 | } |
37e4754d | 9984 | } |
bbc13ae3 KS |
9985 | else |
9986 | exp_end = arg; | |
37e4754d | 9987 | |
bbc13ae3 KS |
9988 | /* Parse the rest of the arguments. From here on out, everything |
9989 | is in terms of a newly allocated string instead of the original | |
9990 | ARG. */ | |
81b1e71c TT |
9991 | std::string expression (arg, exp_end - arg); |
9992 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
9993 | innermost_block_tracker tracker; |
9994 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 9995 | exp_end = arg; |
fa8a61dc TT |
9996 | /* Remove trailing whitespace from the expression before saving it. |
9997 | This makes the eventual display of the expression string a bit | |
9998 | prettier. */ | |
9999 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10000 | --exp_end; | |
10001 | ||
65d79d4b | 10002 | /* Checking if the expression is not constant. */ |
4d01a485 | 10003 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10004 | { |
10005 | int len; | |
10006 | ||
10007 | len = exp_end - exp_start; | |
10008 | while (len > 0 && isspace (exp_start[len - 1])) | |
10009 | len--; | |
10010 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10011 | } | |
10012 | ||
699bd4cf | 10013 | exp_valid_block = tracker.block (); |
b926417a | 10014 | struct value *mark = value_mark (); |
850645cf | 10015 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10016 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10017 | just_location); | |
06a64a0b | 10018 | |
850645cf | 10019 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10020 | { |
850645cf TT |
10021 | saved_bitpos = value_bitpos (val_as_value); |
10022 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10023 | } |
10024 | ||
850645cf | 10025 | value_ref_ptr val; |
06a64a0b TT |
10026 | if (just_location) |
10027 | { | |
9c06b0b4 TJB |
10028 | int ret; |
10029 | ||
06a64a0b | 10030 | exp_valid_block = NULL; |
850645cf | 10031 | val = release_value (value_addr (result)); |
06a64a0b | 10032 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10033 | |
10034 | if (use_mask) | |
10035 | { | |
850645cf | 10036 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10037 | mask); |
10038 | if (ret == -1) | |
10039 | error (_("This target does not support masked watchpoints.")); | |
10040 | else if (ret == -2) | |
10041 | error (_("Invalid mask or memory region.")); | |
10042 | } | |
06a64a0b | 10043 | } |
850645cf TT |
10044 | else if (val_as_value != NULL) |
10045 | val = release_value (val_as_value); | |
c906108c | 10046 | |
f1735a53 TT |
10047 | tok = skip_spaces (arg); |
10048 | end_tok = skip_to_space (tok); | |
c906108c SS |
10049 | |
10050 | toklen = end_tok - tok; | |
10051 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10052 | { | |
10053 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10054 | innermost_block_tracker if_tracker; |
10055 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10056 | |
10057 | /* The watchpoint expression may not be local, but the condition | |
10058 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10059 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10060 | |
c906108c SS |
10061 | cond_end = tok; |
10062 | } | |
10063 | if (*tok) | |
8a3fe4f8 | 10064 | error (_("Junk at end of command.")); |
c906108c | 10065 | |
441d7c93 PA |
10066 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10067 | ||
10068 | /* Save this because create_internal_breakpoint below invalidates | |
10069 | 'wp_frame'. */ | |
10070 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10071 | |
10072 | /* If the expression is "local", then set up a "watchpoint scope" | |
10073 | breakpoint at the point where we've left the scope of the watchpoint | |
10074 | expression. Create the scope breakpoint before the watchpoint, so | |
10075 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10076 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10077 | { |
441d7c93 PA |
10078 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10079 | ||
10080 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10081 | { |
441d7c93 PA |
10082 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10083 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10084 | ||
24b21115 | 10085 | scope_breakpoint |
441d7c93 | 10086 | = create_internal_breakpoint (caller_arch, caller_pc, |
9efa3c7f | 10087 | bp_watchpoint_scope); |
d983da9c | 10088 | |
441d7c93 PA |
10089 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10090 | wp_frame = NULL; | |
10091 | ||
edb3359d | 10092 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10093 | |
edb3359d DJ |
10094 | /* Automatically delete the breakpoint when it hits. */ |
10095 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10096 | |
edb3359d | 10097 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10098 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10099 | |
edb3359d | 10100 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10101 | scope_breakpoint->loc->gdbarch = caller_arch; |
10102 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10103 | scope_breakpoint->loc->address |
a6d9a66e UW |
10104 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10105 | scope_breakpoint->loc->requested_address, | |
60270718 AB |
10106 | scope_breakpoint->type, |
10107 | current_program_space); | |
edb3359d | 10108 | } |
d983da9c DJ |
10109 | } |
10110 | ||
e8369a73 AB |
10111 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10112 | watchpoints here even if hardware watchpoints are turned off, a call | |
10113 | to update_watchpoint later in this function will cause the type to | |
10114 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10115 | ||
10116 | if (accessflag == hw_read) | |
10117 | bp_type = bp_read_watchpoint; | |
10118 | else if (accessflag == hw_access) | |
10119 | bp_type = bp_access_watchpoint; | |
10120 | else | |
10121 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10122 | |
3a292923 | 10123 | std::unique_ptr<watchpoint> w; |
348d480f | 10124 | if (use_mask) |
73063f51 | 10125 | w.reset (new masked_watchpoint (nullptr, bp_type)); |
348d480f | 10126 | else |
73063f51 | 10127 | w.reset (new watchpoint (nullptr, bp_type)); |
3a292923 | 10128 | |
c1fc2657 | 10129 | w->thread = thread; |
8a18382f | 10130 | w->task = task; |
c1fc2657 SM |
10131 | w->disposition = disp_donttouch; |
10132 | w->pspace = current_program_space; | |
b22e99fd | 10133 | w->exp = std::move (exp); |
3a5c3e22 PA |
10134 | w->exp_valid_block = exp_valid_block; |
10135 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10136 | if (just_location) |
10137 | { | |
850645cf TT |
10138 | struct type *t = value_type (val.get ()); |
10139 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10140 | |
43cc5389 | 10141 | w->exp_string_reparse |
a4c50be3 | 10142 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10143 | |
8579fd13 AB |
10144 | w->exp_string = xstrprintf ("-location %.*s", |
10145 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10146 | } |
10147 | else | |
a4c50be3 | 10148 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10149 | |
10150 | if (use_mask) | |
10151 | { | |
3a5c3e22 | 10152 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10153 | } |
10154 | else | |
10155 | { | |
3a5c3e22 | 10156 | w->val = val; |
bb9d5f81 PP |
10157 | w->val_bitpos = saved_bitpos; |
10158 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10159 | w->val_valid = true; |
9c06b0b4 | 10160 | } |
77b06cd7 | 10161 | |
c906108c | 10162 | if (cond_start) |
6f781ee3 | 10163 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10164 | else |
c1fc2657 | 10165 | w->cond_string = 0; |
c5aa993b | 10166 | |
441d7c93 | 10167 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10168 | { |
441d7c93 | 10169 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10170 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10171 | } |
c906108c | 10172 | else |
f6bc2008 | 10173 | { |
3a5c3e22 PA |
10174 | w->watchpoint_frame = null_frame_id; |
10175 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10176 | } |
c906108c | 10177 | |
d983da9c | 10178 | if (scope_breakpoint != NULL) |
c906108c | 10179 | { |
d983da9c DJ |
10180 | /* The scope breakpoint is related to the watchpoint. We will |
10181 | need to act on them together. */ | |
c1fc2657 | 10182 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10183 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10184 | } |
d983da9c | 10185 | |
06a64a0b TT |
10186 | if (!just_location) |
10187 | value_free_to_mark (mark); | |
2d134ed3 | 10188 | |
b270e6f9 TT |
10189 | /* Finally update the new watchpoint. This creates the locations |
10190 | that should be inserted. */ | |
10191 | update_watchpoint (w.get (), 1); | |
a9634178 | 10192 | |
b270e6f9 | 10193 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10194 | } |
10195 | ||
e09342b5 | 10196 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10197 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10198 | |
c906108c | 10199 | static int |
a6535de1 | 10200 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10201 | { |
10202 | int found_memory_cnt = 0; | |
10203 | ||
10204 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10205 | if (!can_use_hw_watchpoints) |
c906108c | 10206 | return 0; |
c5aa993b | 10207 | |
a6535de1 TT |
10208 | gdb_assert (!vals.empty ()); |
10209 | struct value *head = vals[0].get (); | |
10210 | ||
5c44784c JM |
10211 | /* Make sure that the value of the expression depends only upon |
10212 | memory contents, and values computed from them within GDB. If we | |
10213 | find any register references or function calls, we can't use a | |
10214 | hardware watchpoint. | |
10215 | ||
10216 | The idea here is that evaluating an expression generates a series | |
10217 | of values, one holding the value of every subexpression. (The | |
10218 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10219 | a*b+c.) GDB's values hold almost enough information to establish | |
10220 | the criteria given above --- they identify memory lvalues, | |
10221 | register lvalues, computed values, etcetera. So we can evaluate | |
10222 | the expression, and then scan the chain of values that leaves | |
10223 | behind to decide whether we can detect any possible change to the | |
10224 | expression's final value using only hardware watchpoints. | |
10225 | ||
10226 | However, I don't think that the values returned by inferior | |
10227 | function calls are special in any way. So this function may not | |
10228 | notice that an expression involving an inferior function call | |
10229 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10230 | for (const value_ref_ptr &iter : vals) |
c906108c | 10231 | { |
a6535de1 TT |
10232 | struct value *v = iter.get (); |
10233 | ||
5c44784c | 10234 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10235 | { |
8464be76 DJ |
10236 | if (v != head && value_lazy (v)) |
10237 | /* A lazy memory lvalue in the chain is one that GDB never | |
10238 | needed to fetch; we either just used its address (e.g., | |
10239 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10240 | in `a,b'). This doesn't apply to HEAD; if that is | |
10241 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10242 | ; |
53a5351d | 10243 | else |
5c44784c JM |
10244 | { |
10245 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10246 | it with hardware watchpoints. */ |
df407dfe | 10247 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10248 | |
10249 | /* We only watch structs and arrays if user asked for it | |
10250 | explicitly, never if they just happen to appear in a | |
10251 | middle of some value chain. */ | |
10252 | if (v == head | |
78134374 SM |
10253 | || (vtype->code () != TYPE_CODE_STRUCT |
10254 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10255 | { |
42ae5230 | 10256 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10257 | int len; |
10258 | int num_regs; | |
10259 | ||
a9634178 | 10260 | len = (target_exact_watchpoints |
e09342b5 | 10261 | && is_scalar_type_recursive (vtype))? |
df86565b | 10262 | 1 : value_type (v)->length (); |
2e70b7b9 | 10263 | |
e09342b5 TJB |
10264 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10265 | if (!num_regs) | |
2e70b7b9 MS |
10266 | return 0; |
10267 | else | |
e09342b5 | 10268 | found_memory_cnt += num_regs; |
2e70b7b9 | 10269 | } |
5c44784c | 10270 | } |
c5aa993b | 10271 | } |
5086187c AC |
10272 | else if (VALUE_LVAL (v) != not_lval |
10273 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10274 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10275 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10276 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10277 | } |
10278 | ||
10279 | /* The expression itself looks suitable for using a hardware | |
10280 | watchpoint, but give the target machine a chance to reject it. */ | |
10281 | return found_memory_cnt; | |
10282 | } | |
10283 | ||
8b93c638 | 10284 | void |
2e362716 | 10285 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10286 | { |
84f4c1fe | 10287 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10288 | } |
10289 | ||
a15a5258 AB |
10290 | /* Options for the watch, awatch, and rwatch commands. */ |
10291 | ||
10292 | struct watch_options | |
10293 | { | |
10294 | /* For -location. */ | |
10295 | bool location = false; | |
10296 | }; | |
10297 | ||
10298 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10299 | ||
10300 | Historically GDB always accepted both '-location' and '-l' flags for | |
10301 | these commands (both flags being synonyms). When converting to the | |
10302 | newer option scheme only '-location' is added here. That's fine (for | |
10303 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10304 | accepted, so '-l', '-loc', are now all accepted. | |
10305 | ||
10306 | What this means is that, if in the future, we add any new flag here | |
10307 | that starts with '-l' then this will break backward compatibility, so | |
10308 | please, don't do that! */ | |
10309 | ||
10310 | static const gdb::option::option_def watch_option_defs[] = { | |
10311 | gdb::option::flag_option_def<watch_options> { | |
10312 | "location", | |
10313 | [] (watch_options *opt) { return &opt->location; }, | |
10314 | N_("\ | |
10315 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10316 | -l can be used as a short form of -location."), | |
10317 | }, | |
10318 | }; | |
10319 | ||
10320 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10321 | commands. */ | |
10322 | ||
10323 | static gdb::option::option_def_group | |
10324 | make_watch_options_def_group (watch_options *opts) | |
10325 | { | |
10326 | return {{watch_option_defs}, opts}; | |
10327 | } | |
10328 | ||
06a64a0b TT |
10329 | /* A helper function that looks for the "-location" argument and then |
10330 | calls watch_command_1. */ | |
10331 | ||
10332 | static void | |
0b39b52e | 10333 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10334 | { |
a15a5258 AB |
10335 | watch_options opts; |
10336 | auto grp = make_watch_options_def_group (&opts); | |
10337 | gdb::option::process_options | |
10338 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10339 | if (arg != nullptr && *arg == '\0') | |
10340 | arg = nullptr; | |
10341 | ||
10342 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10343 | } | |
06a64a0b | 10344 | |
a15a5258 AB |
10345 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10346 | static void | |
10347 | watch_command_completer (struct cmd_list_element *ignore, | |
10348 | completion_tracker &tracker, | |
10349 | const char *text, const char * /*word*/) | |
10350 | { | |
10351 | const auto group = make_watch_options_def_group (nullptr); | |
10352 | if (gdb::option::complete_options | |
10353 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10354 | return; | |
06a64a0b | 10355 | |
a15a5258 AB |
10356 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10357 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10358 | } |
8926118c | 10359 | |
c5aa993b | 10360 | static void |
0b39b52e | 10361 | watch_command (const char *arg, int from_tty) |
c906108c | 10362 | { |
06a64a0b | 10363 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10364 | } |
10365 | ||
8b93c638 | 10366 | void |
2e362716 | 10367 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10368 | { |
84f4c1fe | 10369 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10370 | } |
8926118c | 10371 | |
c5aa993b | 10372 | static void |
0b39b52e | 10373 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10374 | { |
06a64a0b | 10375 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10376 | } |
10377 | ||
8b93c638 | 10378 | void |
2e362716 | 10379 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10380 | { |
84f4c1fe | 10381 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10382 | } |
8926118c | 10383 | |
c5aa993b | 10384 | static void |
0b39b52e | 10385 | awatch_command (const char *arg, int from_tty) |
c906108c | 10386 | { |
06a64a0b | 10387 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10388 | } |
c906108c | 10389 | \f |
c5aa993b | 10390 | |
cfc31633 PA |
10391 | /* Data for the FSM that manages the until(location)/advance commands |
10392 | in infcmd.c. Here because it uses the mechanisms of | |
10393 | breakpoints. */ | |
c906108c | 10394 | |
46e3ed7f | 10395 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10396 | { |
46e3ed7f | 10397 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10398 | int thread; |
10399 | ||
df631783 PA |
10400 | /* The breakpoint set at the return address in the caller frame, |
10401 | plus breakpoints at all the destination locations. */ | |
10402 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10403 | |
46e3ed7f | 10404 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10405 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10406 | : thread_fsm (cmd_interp), |
10407 | thread (thread), | |
df631783 | 10408 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10409 | { |
10410 | } | |
cfc31633 | 10411 | |
46e3ed7f TT |
10412 | void clean_up (struct thread_info *thread) override; |
10413 | bool should_stop (struct thread_info *thread) override; | |
10414 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10415 | }; |
10416 | ||
cfc31633 PA |
10417 | /* Implementation of the 'should_stop' FSM method for the |
10418 | until(location)/advance commands. */ | |
10419 | ||
46e3ed7f TT |
10420 | bool |
10421 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10422 | { |
df631783 PA |
10423 | for (const breakpoint_up &bp : breakpoints) |
10424 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10425 | bp.get ()) != NULL) | |
10426 | { | |
10427 | set_finished (); | |
10428 | break; | |
10429 | } | |
cfc31633 | 10430 | |
46e3ed7f | 10431 | return true; |
cfc31633 PA |
10432 | } |
10433 | ||
10434 | /* Implementation of the 'clean_up' FSM method for the | |
10435 | until(location)/advance commands. */ | |
10436 | ||
46e3ed7f TT |
10437 | void |
10438 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10439 | { |
cfc31633 | 10440 | /* Clean up our temporary breakpoints. */ |
df631783 | 10441 | breakpoints.clear (); |
46e3ed7f | 10442 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10443 | } |
10444 | ||
10445 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10446 | until(location)/advance commands. */ | |
10447 | ||
46e3ed7f TT |
10448 | enum async_reply_reason |
10449 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10450 | { |
10451 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10452 | } |
10453 | ||
c906108c | 10454 | void |
f2fc3015 | 10455 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10456 | { |
8556afb4 PA |
10457 | struct frame_info *frame; |
10458 | struct gdbarch *frame_gdbarch; | |
10459 | struct frame_id stack_frame_id; | |
10460 | struct frame_id caller_frame_id; | |
186c406b TT |
10461 | int thread; |
10462 | struct thread_info *tp; | |
c906108c | 10463 | |
70509625 | 10464 | clear_proceed_status (0); |
c906108c SS |
10465 | |
10466 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10467 | this function. */ |
c5aa993b | 10468 | |
264f9890 | 10469 | location_spec_up locspec = string_to_location_spec (&arg, current_language); |
f00aae0f | 10470 | |
6c5b2ebe PA |
10471 | std::vector<symtab_and_line> sals |
10472 | = (last_displayed_sal_is_valid () | |
264f9890 | 10473 | ? decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, NULL, |
6c5b2ebe PA |
10474 | get_last_displayed_symtab (), |
10475 | get_last_displayed_line ()) | |
264f9890 | 10476 | : decode_line_1 (locspec.get (), DECODE_LINE_FUNFIRSTLINE, |
cafb3438 | 10477 | NULL, NULL, 0)); |
c5aa993b | 10478 | |
df631783 | 10479 | if (sals.empty ()) |
8a3fe4f8 | 10480 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10481 | |
c906108c | 10482 | if (*arg) |
8a3fe4f8 | 10483 | error (_("Junk at end of arguments.")); |
c5aa993b | 10484 | |
186c406b | 10485 | tp = inferior_thread (); |
5d5658a1 | 10486 | thread = tp->global_num; |
186c406b | 10487 | |
8556afb4 PA |
10488 | /* Note linespec handling above invalidates the frame chain. |
10489 | Installing a breakpoint also invalidates the frame chain (as it | |
10490 | may need to switch threads), so do any frame handling before | |
10491 | that. */ | |
10492 | ||
10493 | frame = get_selected_frame (NULL); | |
10494 | frame_gdbarch = get_frame_arch (frame); | |
10495 | stack_frame_id = get_stack_frame_id (frame); | |
10496 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10497 | |
ae66c1fc EZ |
10498 | /* Keep within the current frame, or in frames called by the current |
10499 | one. */ | |
edb3359d | 10500 | |
df631783 | 10501 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10502 | |
10503 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10504 | ||
883bc8d1 | 10505 | if (frame_id_p (caller_frame_id)) |
c906108c | 10506 | { |
883bc8d1 | 10507 | struct symtab_and_line sal2; |
cfc31633 | 10508 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10509 | |
10510 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10511 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10512 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10513 | |
10514 | breakpoint_up caller_breakpoint | |
10515 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10516 | caller_frame_id, bp_until); | |
10517 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10518 | |
0f443d1b | 10519 | set_longjmp_breakpoint (tp, stack_frame_id); |
5419bdae | 10520 | lj_deleter.emplace (thread); |
c906108c | 10521 | } |
c5aa993b | 10522 | |
c70a6932 JK |
10523 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10524 | frame = NULL; | |
10525 | ||
df631783 PA |
10526 | /* If the user told us to continue until a specified location, we |
10527 | don't specify a frame at which we need to stop. Otherwise, | |
10528 | specify the selected frame, because we want to stop only at the | |
10529 | very same frame. */ | |
10530 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10531 | ||
10532 | for (symtab_and_line &sal : sals) | |
10533 | { | |
10534 | resolve_sal_pc (&sal); | |
10535 | ||
10536 | breakpoint_up location_breakpoint | |
10537 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10538 | stop_frame_id, bp_until); | |
10539 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10540 | } | |
883bc8d1 | 10541 | |
573269a8 LS |
10542 | tp->set_thread_fsm |
10543 | (std::unique_ptr<thread_fsm> | |
10544 | (new until_break_fsm (command_interp (), tp->global_num, | |
10545 | std::move (breakpoints)))); | |
f107f563 | 10546 | |
5419bdae TT |
10547 | if (lj_deleter) |
10548 | lj_deleter->release (); | |
f107f563 | 10549 | |
cfc31633 | 10550 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10551 | } |
ae66c1fc | 10552 | |
c906108c SS |
10553 | \f |
10554 | ||
81b1e71c | 10555 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10556 | |
10557 | static int | |
81b1e71c | 10558 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10559 | { |
81b1e71c TT |
10560 | uintptr_t ua = (uintptr_t) a; |
10561 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10562 | |
81b1e71c | 10563 | if (a->number < b->number) |
8a2c437b | 10564 | return -1; |
81b1e71c | 10565 | else if (a->number > b->number) |
8a2c437b TT |
10566 | return 1; |
10567 | ||
10568 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10569 | the number 0. */ | |
10570 | if (ua < ub) | |
10571 | return -1; | |
94b0e70d | 10572 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10573 | } |
10574 | ||
80f8a6eb | 10575 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10576 | |
10577 | static void | |
0b39b52e | 10578 | clear_command (const char *arg, int from_tty) |
c906108c | 10579 | { |
c906108c | 10580 | int default_match; |
c906108c | 10581 | |
6c5b2ebe PA |
10582 | std::vector<symtab_and_line> decoded_sals; |
10583 | symtab_and_line last_sal; | |
10584 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10585 | if (arg) |
10586 | { | |
6c5b2ebe PA |
10587 | decoded_sals |
10588 | = decode_line_with_current_source (arg, | |
10589 | (DECODE_LINE_FUNFIRSTLINE | |
10590 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10591 | default_match = 0; |
6c5b2ebe | 10592 | sals = decoded_sals; |
c906108c SS |
10593 | } |
10594 | else | |
10595 | { | |
1bfeeb0f JL |
10596 | /* Set sal's line, symtab, pc, and pspace to the values |
10597 | corresponding to the last call to print_frame_info. If the | |
10598 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10599 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10600 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10601 | error (_("No source file specified.")); |
c906108c | 10602 | |
c906108c | 10603 | default_match = 1; |
6c5b2ebe | 10604 | sals = last_sal; |
c906108c SS |
10605 | } |
10606 | ||
4a64f543 MS |
10607 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10608 | seems, because all existing breakpoints typically have both | |
10609 | file/line and pc set. So, if clear is given file/line, we can | |
10610 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10611 | |
10612 | We only support clearing given the address explicitly | |
10613 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10614 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10615 | due to optimization, all in one block. |
4a64f543 MS |
10616 | |
10617 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10618 | PC corresponding to the same file:line, the breakpoint won't |
10619 | be cleared. We probably can still clear the breakpoint, but | |
10620 | since the other PC value is never presented to user, user | |
10621 | can only find it by guessing, and it does not seem important | |
10622 | to support that. */ | |
10623 | ||
4a64f543 MS |
10624 | /* For each line spec given, delete bps which correspond to it. Do |
10625 | it in two passes, solely to preserve the current behavior that | |
10626 | from_tty is forced true if we delete more than one | |
10627 | breakpoint. */ | |
c906108c | 10628 | |
81b1e71c | 10629 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10630 | for (const auto &sal : sals) |
c906108c | 10631 | { |
05cba821 JK |
10632 | const char *sal_fullname; |
10633 | ||
c906108c | 10634 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10635 | If line given (pc == 0), clear all bpts on specified line. |
10636 | If defaulting, clear all bpts on default line | |
10637 | or at default pc. | |
c5aa993b | 10638 | |
dda83cd7 | 10639 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10640 | |
dda83cd7 SM |
10641 | 0 1 pc |
10642 | 1 1 pc _and_ line | |
10643 | 0 0 line | |
10644 | 1 0 <can't happen> */ | |
c906108c | 10645 | |
05cba821 JK |
10646 | sal_fullname = (sal.symtab == NULL |
10647 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10648 | |
4a64f543 | 10649 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10650 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10651 | { |
0d381245 | 10652 | int match = 0; |
4a64f543 | 10653 | /* Are we going to delete b? */ |
a5c69b1e EL |
10654 | if (b->type != bp_none && !is_watchpoint (b) |
10655 | && user_breakpoint_p (b)) | |
0d381245 | 10656 | { |
40cb8ca5 | 10657 | for (bp_location *loc : b->locations ()) |
0d381245 | 10658 | { |
f8eba3c6 TT |
10659 | /* If the user specified file:line, don't allow a PC |
10660 | match. This matches historical gdb behavior. */ | |
10661 | int pc_match = (!sal.explicit_line | |
10662 | && sal.pc | |
10663 | && (loc->pspace == sal.pspace) | |
10664 | && (loc->address == sal.pc) | |
10665 | && (!section_is_overlay (loc->section) | |
10666 | || loc->section == sal.section)); | |
4aac40c8 TT |
10667 | int line_match = 0; |
10668 | ||
10669 | if ((default_match || sal.explicit_line) | |
2f202fde | 10670 | && loc->symtab != NULL |
05cba821 | 10671 | && sal_fullname != NULL |
4aac40c8 | 10672 | && sal.pspace == loc->pspace |
05cba821 JK |
10673 | && loc->line_number == sal.line |
10674 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10675 | sal_fullname) == 0) | |
10676 | line_match = 1; | |
4aac40c8 | 10677 | |
0d381245 VP |
10678 | if (pc_match || line_match) |
10679 | { | |
10680 | match = 1; | |
10681 | break; | |
10682 | } | |
10683 | } | |
10684 | } | |
10685 | ||
10686 | if (match) | |
81b1e71c | 10687 | found.push_back (b); |
c906108c | 10688 | } |
80f8a6eb | 10689 | } |
8a2c437b | 10690 | |
80f8a6eb | 10691 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10692 | if (found.empty ()) |
80f8a6eb MS |
10693 | { |
10694 | if (arg) | |
8a3fe4f8 | 10695 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10696 | else |
8a3fe4f8 | 10697 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10698 | } |
c906108c | 10699 | |
8a2c437b | 10700 | /* Remove duplicates from the vec. */ |
81b1e71c | 10701 | std::sort (found.begin (), found.end (), |
b926417a | 10702 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10703 | { |
b926417a | 10704 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10705 | }); |
10706 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10707 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10708 | { |
b926417a | 10709 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10710 | }), |
10711 | found.end ()); | |
8a2c437b | 10712 | |
81b1e71c | 10713 | if (found.size () > 1) |
4a64f543 | 10714 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10715 | if (from_tty) |
a3f17187 | 10716 | { |
81b1e71c | 10717 | if (found.size () == 1) |
6cb06a8c | 10718 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10719 | else |
6cb06a8c | 10720 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10721 | } |
d6e956e5 | 10722 | |
81b1e71c | 10723 | for (breakpoint *iter : found) |
80f8a6eb | 10724 | { |
c5aa993b | 10725 | if (from_tty) |
6cb06a8c | 10726 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10727 | delete_breakpoint (iter); |
c906108c | 10728 | } |
80f8a6eb | 10729 | if (from_tty) |
a11ac3b3 | 10730 | gdb_putc ('\n'); |
c906108c SS |
10731 | } |
10732 | \f | |
10733 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10734 | all breakpoints that are marked for deletion, whether hit or not. | |
10735 | This is called after any breakpoint is hit, or after errors. */ | |
10736 | ||
10737 | void | |
313f3b21 | 10738 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10739 | { |
c906108c | 10740 | for (; bs; bs = bs->next) |
f431efe5 PA |
10741 | if (bs->breakpoint_at |
10742 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10743 | && bs->stop) |
f431efe5 | 10744 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10745 | |
1428b37a | 10746 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10747 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10748 | delete_breakpoint (b); |
c906108c SS |
10749 | } |
10750 | ||
4a64f543 | 10751 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10752 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10753 | bl_address_is_meaningful says), secondarily by ordering first |
10754 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10755 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10756 | |
10757 | static int | |
39ef2f62 | 10758 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10759 | { |
876fa593 | 10760 | if (a->address != b->address) |
39ef2f62 | 10761 | return a->address < b->address; |
876fa593 | 10762 | |
dea2aa5f LM |
10763 | /* Sort locations at the same address by their pspace number, keeping |
10764 | locations of the same inferior (in a multi-inferior environment) | |
10765 | grouped. */ | |
10766 | ||
10767 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10768 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10769 | |
876fa593 | 10770 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10771 | if (a->permanent != b->permanent) |
39ef2f62 | 10772 | return a->permanent > b->permanent; |
876fa593 | 10773 | |
7f32a4d5 PA |
10774 | /* Sort by type in order to make duplicate determination easier. |
10775 | See update_global_location_list. This is kept in sync with | |
10776 | breakpoint_locations_match. */ | |
10777 | if (a->loc_type < b->loc_type) | |
10778 | return true; | |
10779 | ||
10780 | /* Likewise, for range-breakpoints, sort by length. */ | |
10781 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10782 | && b->loc_type == bp_loc_hardware_breakpoint | |
10783 | && a->length < b->length) | |
10784 | return true; | |
10785 | ||
c56a97f9 JK |
10786 | /* Make the internal GDB representation stable across GDB runs |
10787 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10788 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10789 | |
10790 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 10791 | return a->owner->number < b->owner->number; |
876fa593 | 10792 | |
39ef2f62 | 10793 | return a < b; |
876fa593 JK |
10794 | } |
10795 | ||
f5336ca5 PA |
10796 | /* Set bp_locations_placed_address_before_address_max and |
10797 | bp_locations_shadow_len_after_address_max according to the current | |
10798 | content of the bp_locations array. */ | |
f7545552 TT |
10799 | |
10800 | static void | |
f5336ca5 | 10801 | bp_locations_target_extensions_update (void) |
f7545552 | 10802 | { |
f5336ca5 PA |
10803 | bp_locations_placed_address_before_address_max = 0; |
10804 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 10805 | |
48d7020b | 10806 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
10807 | { |
10808 | CORE_ADDR start, end, addr; | |
10809 | ||
10810 | if (!bp_location_has_shadow (bl)) | |
10811 | continue; | |
10812 | ||
10813 | start = bl->target_info.placed_address; | |
10814 | end = start + bl->target_info.shadow_len; | |
10815 | ||
10816 | gdb_assert (bl->address >= start); | |
10817 | addr = bl->address - start; | |
f5336ca5 PA |
10818 | if (addr > bp_locations_placed_address_before_address_max) |
10819 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
10820 | |
10821 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10822 | ||
10823 | gdb_assert (bl->address < end); | |
10824 | addr = end - bl->address; | |
f5336ca5 PA |
10825 | if (addr > bp_locations_shadow_len_after_address_max) |
10826 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 10827 | } |
f7545552 TT |
10828 | } |
10829 | ||
1e4d1764 YQ |
10830 | /* Download tracepoint locations if they haven't been. */ |
10831 | ||
10832 | static void | |
10833 | download_tracepoint_locations (void) | |
10834 | { | |
dd2e65cc | 10835 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 10836 | |
5ed8105e | 10837 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 10838 | |
f6d17b2b | 10839 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
10840 | { |
10841 | struct tracepoint *t; | |
f2a8bc8a | 10842 | int bp_location_downloaded = 0; |
1e4d1764 | 10843 | |
7ed2c994 | 10844 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
10845 | ? !may_insert_fast_tracepoints |
10846 | : !may_insert_tracepoints)) | |
10847 | continue; | |
10848 | ||
dd2e65cc YQ |
10849 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
10850 | { | |
10851 | if (target_can_download_tracepoint ()) | |
10852 | can_download_tracepoint = TRIBOOL_TRUE; | |
10853 | else | |
10854 | can_download_tracepoint = TRIBOOL_FALSE; | |
10855 | } | |
10856 | ||
10857 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
10858 | break; | |
10859 | ||
40cb8ca5 | 10860 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
10861 | { |
10862 | /* In tracepoint, locations are _never_ duplicated, so | |
10863 | should_be_inserted is equivalent to | |
10864 | unduplicated_should_be_inserted. */ | |
10865 | if (!should_be_inserted (bl) || bl->inserted) | |
10866 | continue; | |
1e4d1764 | 10867 | |
7ed2c994 | 10868 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 10869 | |
7ed2c994 | 10870 | target_download_tracepoint (bl); |
1e4d1764 | 10871 | |
7ed2c994 | 10872 | bl->inserted = 1; |
f2a8bc8a | 10873 | bp_location_downloaded = 1; |
7ed2c994 YQ |
10874 | } |
10875 | t = (struct tracepoint *) b; | |
10876 | t->number_on_target = b->number; | |
f2a8bc8a | 10877 | if (bp_location_downloaded) |
76727919 | 10878 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 10879 | } |
1e4d1764 YQ |
10880 | } |
10881 | ||
934709f0 PW |
10882 | /* Swap the insertion/duplication state between two locations. */ |
10883 | ||
10884 | static void | |
10885 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10886 | { | |
10887 | const int left_inserted = left->inserted; | |
10888 | const int left_duplicate = left->duplicate; | |
b775012e | 10889 | const int left_needs_update = left->needs_update; |
934709f0 PW |
10890 | const struct bp_target_info left_target_info = left->target_info; |
10891 | ||
1e4d1764 YQ |
10892 | /* Locations of tracepoints can never be duplicated. */ |
10893 | if (is_tracepoint (left->owner)) | |
10894 | gdb_assert (!left->duplicate); | |
10895 | if (is_tracepoint (right->owner)) | |
10896 | gdb_assert (!right->duplicate); | |
10897 | ||
934709f0 PW |
10898 | left->inserted = right->inserted; |
10899 | left->duplicate = right->duplicate; | |
b775012e | 10900 | left->needs_update = right->needs_update; |
934709f0 PW |
10901 | left->target_info = right->target_info; |
10902 | right->inserted = left_inserted; | |
10903 | right->duplicate = left_duplicate; | |
b775012e | 10904 | right->needs_update = left_needs_update; |
934709f0 PW |
10905 | right->target_info = left_target_info; |
10906 | } | |
10907 | ||
b775012e LM |
10908 | /* Force the re-insertion of the locations at ADDRESS. This is called |
10909 | once a new/deleted/modified duplicate location is found and we are evaluating | |
10910 | conditions on the target's side. Such conditions need to be updated on | |
10911 | the target. */ | |
10912 | ||
10913 | static void | |
10914 | force_breakpoint_reinsertion (struct bp_location *bl) | |
10915 | { | |
b775012e LM |
10916 | CORE_ADDR address = 0; |
10917 | int pspace_num; | |
10918 | ||
10919 | address = bl->address; | |
10920 | pspace_num = bl->pspace->num; | |
10921 | ||
10922 | /* This is only meaningful if the target is | |
10923 | evaluating conditions and if the user has | |
10924 | opted for condition evaluation on the target's | |
10925 | side. */ | |
10926 | if (gdb_evaluates_breakpoint_condition_p () | |
10927 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
10928 | return; | |
10929 | ||
10930 | /* Flag all breakpoint locations with this address and | |
10931 | the same program space as the location | |
10932 | as "its condition has changed". We need to | |
10933 | update the conditions on the target's side. */ | |
e0d9a270 | 10934 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 10935 | { |
b775012e LM |
10936 | if (!is_breakpoint (loc->owner) |
10937 | || pspace_num != loc->pspace->num) | |
10938 | continue; | |
10939 | ||
10940 | /* Flag the location appropriately. We use a different state to | |
10941 | let everyone know that we already updated the set of locations | |
10942 | with addr bl->address and program space bl->pspace. This is so | |
10943 | we don't have to keep calling these functions just to mark locations | |
10944 | that have already been marked. */ | |
10945 | loc->condition_changed = condition_updated; | |
10946 | ||
10947 | /* Free the agent expression bytecode as well. We will compute | |
10948 | it later on. */ | |
833177a4 | 10949 | loc->cond_bytecode.reset (); |
b775012e LM |
10950 | } |
10951 | } | |
7f32a4d5 | 10952 | |
44702360 PA |
10953 | /* Called whether new breakpoints are created, or existing breakpoints |
10954 | deleted, to update the global location list and recompute which | |
10955 | locations are duplicate of which. | |
b775012e | 10956 | |
04086b45 PA |
10957 | The INSERT_MODE flag determines whether locations may not, may, or |
10958 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
10959 | info. */ | |
b60e7edf | 10960 | |
0d381245 | 10961 | static void |
44702360 | 10962 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 10963 | { |
b775012e LM |
10964 | /* Last breakpoint location address that was marked for update. */ |
10965 | CORE_ADDR last_addr = 0; | |
10966 | /* Last breakpoint location program space that was marked for update. */ | |
10967 | int last_pspace_num = -1; | |
f7545552 | 10968 | |
2d134ed3 PA |
10969 | /* Used in the duplicates detection below. When iterating over all |
10970 | bp_locations, points to the first bp_location of a given address. | |
10971 | Breakpoints and watchpoints of different types are never | |
10972 | duplicates of each other. Keep one pointer for each type of | |
10973 | breakpoint/watchpoint, so we only need to loop over all locations | |
10974 | once. */ | |
10975 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10976 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10977 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10978 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10979 | |
f5336ca5 PA |
10980 | /* Saved former bp_locations array which we compare against the newly |
10981 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
10982 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
10983 | bp_locations.clear (); | |
876fa593 | 10984 | |
43892fdf | 10985 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 10986 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 10987 | bp_locations.push_back (loc); |
7f32a4d5 PA |
10988 | |
10989 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
10990 | breakpoint. Do this before deciding whether locations are | |
10991 | duplicates. Also do this before sorting because sorting order | |
10992 | depends on location type. */ | |
5d51cd5d SM |
10993 | for (bp_location *loc : bp_locations) |
10994 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 10995 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 10996 | |
5d51cd5d | 10997 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 10998 | bp_location_is_less_than); |
876fa593 | 10999 | |
f5336ca5 | 11000 | bp_locations_target_extensions_update (); |
74960c60 | 11001 | |
4a64f543 MS |
11002 | /* Identify bp_location instances that are no longer present in the |
11003 | new list, and therefore should be freed. Note that it's not | |
11004 | necessary that those locations should be removed from inferior -- | |
11005 | if there's another location at the same address (previously | |
11006 | marked as duplicate), we don't need to remove/insert the | |
11007 | location. | |
876fa593 | 11008 | |
4a64f543 MS |
11009 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11010 | and former bp_location array state respectively. */ | |
876fa593 | 11011 | |
5d51cd5d SM |
11012 | size_t loc_i = 0; |
11013 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11014 | { |
e5dd4106 | 11015 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11016 | not, we have to free it. */ |
c7d46a38 | 11017 | int found_object = 0; |
20874c92 VP |
11018 | /* Tells if the location should remain inserted in the target. */ |
11019 | int keep_in_target = 0; | |
11020 | int removed = 0; | |
876fa593 | 11021 | |
4a64f543 MS |
11022 | /* Skip LOCP entries which will definitely never be needed. |
11023 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11024 | while (loc_i < bp_locations.size () |
11025 | && bp_locations[loc_i]->address < old_loc->address) | |
11026 | loc_i++; | |
c7d46a38 | 11027 | |
5d51cd5d SM |
11028 | for (size_t loc2_i = loc_i; |
11029 | (loc2_i < bp_locations.size () | |
11030 | && bp_locations[loc2_i]->address == old_loc->address); | |
11031 | loc2_i++) | |
c7d46a38 | 11032 | { |
b775012e LM |
11033 | /* Check if this is a new/duplicated location or a duplicated |
11034 | location that had its condition modified. If so, we want to send | |
11035 | its condition to the target if evaluation of conditions is taking | |
11036 | place there. */ | |
5d51cd5d | 11037 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11038 | && (last_addr != old_loc->address |
11039 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11040 | { |
5d51cd5d | 11041 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11042 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11043 | } |
b775012e | 11044 | |
5d51cd5d | 11045 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11046 | found_object = 1; |
c7d46a38 | 11047 | } |
74960c60 | 11048 | |
b775012e LM |
11049 | /* We have already handled this address, update it so that we don't |
11050 | have to go through updates again. */ | |
11051 | last_addr = old_loc->address; | |
11052 | ||
11053 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11054 | if (!found_object) | |
11055 | force_breakpoint_reinsertion (old_loc); | |
11056 | ||
4a64f543 MS |
11057 | /* If this location is no longer present, and inserted, look if |
11058 | there's maybe a new location at the same address. If so, | |
11059 | mark that one inserted, and don't remove this one. This is | |
11060 | needed so that we don't have a time window where a breakpoint | |
11061 | at certain location is not inserted. */ | |
74960c60 | 11062 | |
876fa593 | 11063 | if (old_loc->inserted) |
0d381245 | 11064 | { |
4a64f543 MS |
11065 | /* If the location is inserted now, we might have to remove |
11066 | it. */ | |
74960c60 | 11067 | |
876fa593 | 11068 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11069 | { |
4a64f543 MS |
11070 | /* The location is still present in the location list, |
11071 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11072 | keep_in_target = 1; |
74960c60 VP |
11073 | } |
11074 | else | |
11075 | { | |
b775012e LM |
11076 | /* This location still exists, but it won't be kept in the |
11077 | target since it may have been disabled. We proceed to | |
11078 | remove its target-side condition. */ | |
11079 | ||
4a64f543 MS |
11080 | /* The location is either no longer present, or got |
11081 | disabled. See if there's another location at the | |
11082 | same address, in which case we don't need to remove | |
11083 | this one from the target. */ | |
876fa593 | 11084 | |
2bdf28a0 | 11085 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11086 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11087 | { |
5d51cd5d SM |
11088 | for (size_t loc2_i = loc_i; |
11089 | (loc2_i < bp_locations.size () | |
11090 | && bp_locations[loc2_i]->address == old_loc->address); | |
11091 | loc2_i++) | |
876fa593 | 11092 | { |
5d51cd5d | 11093 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11094 | |
7f32a4d5 PA |
11095 | if (loc2 == old_loc) |
11096 | continue; | |
11097 | ||
2d134ed3 | 11098 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11099 | { |
85d721b8 PA |
11100 | /* Read watchpoint locations are switched to |
11101 | access watchpoints, if the former are not | |
11102 | supported, but the latter are. */ | |
11103 | if (is_hardware_watchpoint (old_loc->owner)) | |
11104 | { | |
11105 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11106 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11107 | } | |
11108 | ||
934709f0 PW |
11109 | /* loc2 is a duplicated location. We need to check |
11110 | if it should be inserted in case it will be | |
11111 | unduplicated. */ | |
7f32a4d5 | 11112 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11113 | { |
934709f0 | 11114 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11115 | keep_in_target = 1; |
11116 | break; | |
11117 | } | |
876fa593 JK |
11118 | } |
11119 | } | |
11120 | } | |
74960c60 VP |
11121 | } |
11122 | ||
20874c92 VP |
11123 | if (!keep_in_target) |
11124 | { | |
834c0d03 | 11125 | if (remove_breakpoint (old_loc)) |
20874c92 | 11126 | { |
4a64f543 MS |
11127 | /* This is just about all we can do. We could keep |
11128 | this location on the global list, and try to | |
11129 | remove it next time, but there's no particular | |
11130 | reason why we will succeed next time. | |
20874c92 | 11131 | |
4a64f543 MS |
11132 | Note that at this point, old_loc->owner is still |
11133 | valid, as delete_breakpoint frees the breakpoint | |
11134 | only after calling us. */ | |
6cb06a8c TT |
11135 | gdb_printf (_("warning: Error removing " |
11136 | "breakpoint %d\n"), | |
11137 | old_loc->owner->number); | |
20874c92 VP |
11138 | } |
11139 | removed = 1; | |
11140 | } | |
0d381245 | 11141 | } |
74960c60 VP |
11142 | |
11143 | if (!found_object) | |
1c5cfe86 | 11144 | { |
fbea99ea | 11145 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11146 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11147 | { |
db82e815 PA |
11148 | /* This location was removed from the target. In |
11149 | non-stop mode, a race condition is possible where | |
11150 | we've removed a breakpoint, but stop events for that | |
11151 | breakpoint are already queued and will arrive later. | |
11152 | We apply an heuristic to be able to distinguish such | |
11153 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11154 | breakpoint location for a bit, and will retire it | |
11155 | after we see some number of events. The theory here | |
11156 | is that reporting of events should, "on the average", | |
11157 | be fair, so after a while we'll see events from all | |
11158 | threads that have anything of interest, and no longer | |
11159 | need to keep this breakpoint location around. We | |
11160 | don't hold locations forever so to reduce chances of | |
11161 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11162 | SIGTRAP. | |
11163 | ||
11164 | The heuristic failing can be disastrous on | |
11165 | decr_pc_after_break targets. | |
11166 | ||
11167 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11168 | if we fail to recognize a late breakpoint SIGTRAP, | |
11169 | because events_till_retirement has reached 0 too | |
11170 | soon, we'll fail to do the PC adjustment, and report | |
11171 | a random SIGTRAP to the user. When the user resumes | |
11172 | the inferior, it will most likely immediately crash | |
2dec564e | 11173 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11174 | corrupted, because of being resumed e.g., in the |
11175 | middle of a multi-byte instruction, or skipped a | |
11176 | one-byte instruction. This was actually seen happen | |
11177 | on native x86-linux, and should be less rare on | |
11178 | targets that do not support new thread events, like | |
11179 | remote, due to the heuristic depending on | |
11180 | thread_count. | |
11181 | ||
11182 | Mistaking a random SIGTRAP for a breakpoint trap | |
11183 | causes similar symptoms (PC adjustment applied when | |
11184 | it shouldn't), but then again, playing with SIGTRAPs | |
11185 | behind the debugger's back is asking for trouble. | |
11186 | ||
11187 | Since hardware watchpoint traps are always | |
11188 | distinguishable from other traps, so we don't need to | |
11189 | apply keep hardware watchpoint moribund locations | |
11190 | around. We simply always ignore hardware watchpoint | |
11191 | traps we can no longer explain. */ | |
11192 | ||
5b6d1e4f PA |
11193 | process_stratum_target *proc_target = nullptr; |
11194 | for (inferior *inf : all_inferiors ()) | |
11195 | if (inf->pspace == old_loc->pspace) | |
11196 | { | |
11197 | proc_target = inf->process_target (); | |
11198 | break; | |
11199 | } | |
11200 | if (proc_target != nullptr) | |
11201 | old_loc->events_till_retirement | |
11202 | = 3 * (thread_count (proc_target) + 1); | |
11203 | else | |
11204 | old_loc->events_till_retirement = 1; | |
876fa593 | 11205 | old_loc->owner = NULL; |
20874c92 | 11206 | |
1123588c | 11207 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11208 | } |
11209 | else | |
f431efe5 PA |
11210 | { |
11211 | old_loc->owner = NULL; | |
11212 | decref_bp_location (&old_loc); | |
11213 | } | |
20874c92 | 11214 | } |
74960c60 | 11215 | } |
1c5cfe86 | 11216 | |
348d480f PA |
11217 | /* Rescan breakpoints at the same address and section, marking the |
11218 | first one as "first" and any others as "duplicates". This is so | |
11219 | that the bpt instruction is only inserted once. If we have a | |
11220 | permanent breakpoint at the same place as BPT, make that one the | |
11221 | official one, and the rest as duplicates. Permanent breakpoints | |
11222 | are sorted first for the same address. | |
11223 | ||
11224 | Do the same for hardware watchpoints, but also considering the | |
11225 | watchpoint's type (regular/access/read) and length. */ | |
11226 | ||
11227 | bp_loc_first = NULL; | |
11228 | wp_loc_first = NULL; | |
11229 | awp_loc_first = NULL; | |
11230 | rwp_loc_first = NULL; | |
40cb8ca5 | 11231 | |
48d7020b | 11232 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11233 | { |
11234 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11235 | non-NULL. */ | |
348d480f | 11236 | struct bp_location **loc_first_p; |
43892fdf | 11237 | breakpoint *b = loc->owner; |
348d480f | 11238 | |
6f380991 | 11239 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11240 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11241 | /* Don't detect duplicate for tracepoint locations because they are |
11242 | never duplicated. See the comments in field `duplicate' of | |
11243 | `struct bp_location'. */ | |
348d480f | 11244 | || is_tracepoint (b)) |
b775012e LM |
11245 | { |
11246 | /* Clear the condition modification flag. */ | |
11247 | loc->condition_changed = condition_unchanged; | |
11248 | continue; | |
11249 | } | |
348d480f | 11250 | |
348d480f PA |
11251 | if (b->type == bp_hardware_watchpoint) |
11252 | loc_first_p = &wp_loc_first; | |
11253 | else if (b->type == bp_read_watchpoint) | |
11254 | loc_first_p = &rwp_loc_first; | |
11255 | else if (b->type == bp_access_watchpoint) | |
11256 | loc_first_p = &awp_loc_first; | |
11257 | else | |
11258 | loc_first_p = &bp_loc_first; | |
11259 | ||
11260 | if (*loc_first_p == NULL | |
11261 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11262 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11263 | { | |
11264 | *loc_first_p = loc; | |
11265 | loc->duplicate = 0; | |
b775012e LM |
11266 | |
11267 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11268 | { | |
11269 | loc->needs_update = 1; | |
11270 | /* Clear the condition modification flag. */ | |
11271 | loc->condition_changed = condition_unchanged; | |
11272 | } | |
348d480f PA |
11273 | continue; |
11274 | } | |
11275 | ||
934709f0 PW |
11276 | |
11277 | /* This and the above ensure the invariant that the first location | |
11278 | is not duplicated, and is the inserted one. | |
11279 | All following are marked as duplicated, and are not inserted. */ | |
11280 | if (loc->inserted) | |
11281 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11282 | loc->duplicate = 1; |
11283 | ||
b775012e LM |
11284 | /* Clear the condition modification flag. */ |
11285 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11286 | } |
11287 | ||
a25a5a45 | 11288 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11289 | { |
04086b45 | 11290 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11291 | insert_breakpoint_locations (); |
11292 | else | |
11293 | { | |
44702360 PA |
11294 | /* Even though the caller told us to not insert new |
11295 | locations, we may still need to update conditions on the | |
11296 | target's side of breakpoints that were already inserted | |
11297 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11298 | only update conditions for locations that are marked |
11299 | "needs_update". */ | |
11300 | update_inserted_breakpoint_locations (); | |
11301 | } | |
11302 | } | |
348d480f | 11303 | |
04086b45 | 11304 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11305 | download_tracepoint_locations (); |
348d480f PA |
11306 | } |
11307 | ||
11308 | void | |
11309 | breakpoint_retire_moribund (void) | |
11310 | { | |
1123588c TT |
11311 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11312 | { | |
11313 | struct bp_location *loc = moribund_locations[ix]; | |
11314 | if (--(loc->events_till_retirement) == 0) | |
11315 | { | |
11316 | decref_bp_location (&loc); | |
11317 | unordered_remove (moribund_locations, ix); | |
11318 | --ix; | |
11319 | } | |
11320 | } | |
348d480f PA |
11321 | } |
11322 | ||
11323 | static void | |
44702360 | 11324 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11325 | { |
348d480f | 11326 | |
a70b8144 | 11327 | try |
492d29ea PA |
11328 | { |
11329 | update_global_location_list (insert_mode); | |
11330 | } | |
230d2906 | 11331 | catch (const gdb_exception_error &e) |
492d29ea PA |
11332 | { |
11333 | } | |
348d480f PA |
11334 | } |
11335 | ||
11336 | /* Clear BKP from a BPS. */ | |
11337 | ||
11338 | static void | |
313f3b21 | 11339 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11340 | { |
313f3b21 | 11341 | bpstat *bs; |
348d480f PA |
11342 | |
11343 | for (bs = bps; bs; bs = bs->next) | |
11344 | if (bs->breakpoint_at == bpt) | |
11345 | { | |
11346 | bs->breakpoint_at = NULL; | |
11347 | bs->old_val = NULL; | |
11348 | /* bs->commands will be freed later. */ | |
11349 | } | |
11350 | } | |
11351 | ||
11352 | /* Callback for iterate_over_threads. */ | |
11353 | static int | |
11354 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11355 | { | |
9a3c8263 | 11356 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11357 | |
11358 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11359 | return 0; | |
11360 | } | |
11361 | ||
c47614fe | 11362 | /* Helper for breakpoint and tracepoint breakpoint->mention |
348d480f PA |
11363 | callbacks. */ |
11364 | ||
11365 | static void | |
b713485d | 11366 | say_where (const breakpoint *b) |
348d480f PA |
11367 | { |
11368 | struct value_print_options opts; | |
11369 | ||
11370 | get_user_print_options (&opts); | |
11371 | ||
11372 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11373 | single string. */ | |
11374 | if (b->loc == NULL) | |
11375 | { | |
f00aae0f KS |
11376 | /* For pending locations, the output differs slightly based |
11377 | on b->extra_string. If this is non-NULL, it contains either | |
11378 | a condition or dprintf arguments. */ | |
11379 | if (b->extra_string == NULL) | |
11380 | { | |
709438c7 | 11381 | gdb_printf (_(" (%s) pending."), b->locspec->to_string ()); |
f00aae0f KS |
11382 | } |
11383 | else if (b->type == bp_dprintf) | |
11384 | { | |
6cb06a8c | 11385 | gdb_printf (_(" (%s,%s) pending."), |
709438c7 | 11386 | b->locspec->to_string (), |
6cb06a8c | 11387 | b->extra_string.get ()); |
f00aae0f KS |
11388 | } |
11389 | else | |
11390 | { | |
6cb06a8c | 11391 | gdb_printf (_(" (%s %s) pending."), |
709438c7 | 11392 | b->locspec->to_string (), |
6cb06a8c | 11393 | b->extra_string.get ()); |
f00aae0f | 11394 | } |
348d480f PA |
11395 | } |
11396 | else | |
11397 | { | |
2f202fde | 11398 | if (opts.addressprint || b->loc->symtab == NULL) |
6cb06a8c TT |
11399 | gdb_printf (" at %ps", |
11400 | styled_string (address_style.style (), | |
11401 | paddress (b->loc->gdbarch, | |
11402 | b->loc->address))); | |
2f202fde | 11403 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
11404 | { |
11405 | /* If there is a single location, we can print the location | |
11406 | more nicely. */ | |
11407 | if (b->loc->next == NULL) | |
0bb296cb | 11408 | { |
6a831f06 PA |
11409 | const char *filename |
11410 | = symtab_to_filename_for_display (b->loc->symtab); | |
6cb06a8c TT |
11411 | gdb_printf (": file %ps, line %d.", |
11412 | styled_string (file_name_style.style (), | |
11413 | filename), | |
11414 | b->loc->line_number); | |
0bb296cb | 11415 | } |
f8eba3c6 TT |
11416 | else |
11417 | /* This is not ideal, but each location may have a | |
11418 | different file name, and this at least reflects the | |
11419 | real situation somewhat. */ | |
709438c7 | 11420 | gdb_printf (": %s.", b->locspec->to_string ()); |
f8eba3c6 | 11421 | } |
348d480f PA |
11422 | |
11423 | if (b->loc->next) | |
11424 | { | |
11425 | struct bp_location *loc = b->loc; | |
11426 | int n = 0; | |
11427 | for (; loc; loc = loc->next) | |
11428 | ++n; | |
6cb06a8c | 11429 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11430 | } |
11431 | } | |
11432 | } | |
11433 | ||
40cb8ca5 SM |
11434 | /* See breakpoint.h. */ |
11435 | ||
a67bcaba | 11436 | bp_location_range breakpoint::locations () const |
40cb8ca5 | 11437 | { |
9be25986 | 11438 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11439 | } |
11440 | ||
4c6a92b1 TT |
11441 | struct bp_location * |
11442 | breakpoint::allocate_location () | |
11443 | { | |
11444 | return new bp_location (this); | |
11445 | } | |
11446 | ||
2060206e PA |
11447 | #define internal_error_pure_virtual_called() \ |
11448 | gdb_assert_not_reached ("pure virtual function called") | |
11449 | ||
4c6a92b1 TT |
11450 | int |
11451 | breakpoint::insert_location (struct bp_location *bl) | |
11452 | { | |
11453 | internal_error_pure_virtual_called (); | |
11454 | } | |
11455 | ||
4c6a92b1 TT |
11456 | int |
11457 | breakpoint::remove_location (struct bp_location *bl, | |
11458 | enum remove_bp_reason reason) | |
11459 | { | |
11460 | internal_error_pure_virtual_called (); | |
11461 | } | |
11462 | ||
4c6a92b1 TT |
11463 | int |
11464 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11465 | const address_space *aspace, | |
11466 | CORE_ADDR bp_addr, | |
11467 | const target_waitstatus &ws) | |
11468 | { | |
11469 | internal_error_pure_virtual_called (); | |
11470 | } | |
11471 | ||
4c6a92b1 TT |
11472 | int |
11473 | breakpoint::resources_needed (const struct bp_location *bl) | |
11474 | { | |
11475 | internal_error_pure_virtual_called (); | |
11476 | } | |
11477 | ||
4c6a92b1 | 11478 | enum print_stop_action |
7bd86313 | 11479 | breakpoint::print_it (const bpstat *bs) const |
4c6a92b1 TT |
11480 | { |
11481 | internal_error_pure_virtual_called (); | |
11482 | } | |
11483 | ||
4c6a92b1 | 11484 | void |
b713485d | 11485 | breakpoint::print_mention () const |
4c6a92b1 TT |
11486 | { |
11487 | internal_error_pure_virtual_called (); | |
11488 | } | |
11489 | ||
4c6a92b1 | 11490 | void |
4d1ae558 | 11491 | breakpoint::print_recreate (struct ui_file *fp) const |
4c6a92b1 TT |
11492 | { |
11493 | internal_error_pure_virtual_called (); | |
11494 | } | |
11495 | ||
2060206e PA |
11496 | /* Default breakpoint_ops methods. */ |
11497 | ||
2b5ab5b8 | 11498 | void |
74421c0b | 11499 | code_breakpoint::re_set () |
348d480f | 11500 | { |
06edf0c0 | 11501 | /* FIXME: is this still reachable? */ |
264f9890 | 11502 | if (breakpoint_location_spec_empty_p (this)) |
06edf0c0 | 11503 | { |
f00aae0f | 11504 | /* Anything without a location can't be re-set. */ |
2b5ab5b8 | 11505 | delete_breakpoint (this); |
06edf0c0 | 11506 | return; |
348d480f | 11507 | } |
06edf0c0 | 11508 | |
b3d5660a | 11509 | re_set_default (); |
348d480f PA |
11510 | } |
11511 | ||
2b5ab5b8 | 11512 | int |
74421c0b | 11513 | code_breakpoint::insert_location (struct bp_location *bl) |
348d480f | 11514 | { |
cd6c3b4f YQ |
11515 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11516 | ||
579c6ad9 | 11517 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11518 | bl->target_info.placed_address = addr; |
11519 | ||
5d926615 | 11520 | int result; |
348d480f | 11521 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
5d926615 | 11522 | result = target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11523 | else |
5d926615 TT |
11524 | result = target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
11525 | ||
11526 | if (result == 0 && bl->probe.prob != nullptr) | |
11527 | { | |
11528 | /* The insertion was successful, now let's set the probe's semaphore | |
11529 | if needed. */ | |
11530 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); | |
11531 | } | |
11532 | ||
11533 | return result; | |
348d480f PA |
11534 | } |
11535 | ||
2b5ab5b8 | 11536 | int |
74421c0b | 11537 | code_breakpoint::remove_location (struct bp_location *bl, |
2b5ab5b8 | 11538 | enum remove_bp_reason reason) |
348d480f | 11539 | { |
5d926615 TT |
11540 | if (bl->probe.prob != nullptr) |
11541 | { | |
11542 | /* Let's clear the semaphore before removing the location. */ | |
11543 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); | |
11544 | } | |
11545 | ||
348d480f PA |
11546 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
11547 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11548 | else | |
73971819 | 11549 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11550 | } |
11551 | ||
2b5ab5b8 | 11552 | int |
74421c0b | 11553 | code_breakpoint::breakpoint_hit (const struct bp_location *bl, |
2b5ab5b8 TT |
11554 | const address_space *aspace, |
11555 | CORE_ADDR bp_addr, | |
11556 | const target_waitstatus &ws) | |
348d480f | 11557 | { |
c272a98c SM |
11558 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11559 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11560 | return 0; |
11561 | ||
348d480f PA |
11562 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11563 | aspace, bp_addr)) | |
11564 | return 0; | |
11565 | ||
11566 | if (overlay_debugging /* unmapped overlay section */ | |
11567 | && section_is_overlay (bl->section) | |
11568 | && !section_is_mapped (bl->section)) | |
11569 | return 0; | |
11570 | ||
11571 | return 1; | |
11572 | } | |
11573 | ||
f293a0b5 TT |
11574 | int |
11575 | dprintf_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11576 | const address_space *aspace, | |
11577 | CORE_ADDR bp_addr, | |
11578 | const target_waitstatus &ws) | |
cd1608cc PA |
11579 | { |
11580 | if (dprintf_style == dprintf_style_agent | |
11581 | && target_can_run_breakpoint_commands ()) | |
11582 | { | |
11583 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11584 | for this address it must be for a breakpoint that happens to | |
11585 | be set at the same address. */ | |
11586 | return 0; | |
11587 | } | |
11588 | ||
f293a0b5 | 11589 | return this->ordinary_breakpoint::breakpoint_hit (bl, aspace, bp_addr, ws); |
cd1608cc PA |
11590 | } |
11591 | ||
7dd8e7ae TT |
11592 | int |
11593 | ordinary_breakpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 11594 | { |
7dd8e7ae | 11595 | gdb_assert (type == bp_hardware_breakpoint); |
348d480f PA |
11596 | |
11597 | return 1; | |
11598 | } | |
11599 | ||
7dd8e7ae | 11600 | enum print_stop_action |
7bd86313 | 11601 | ordinary_breakpoint::print_it (const bpstat *bs) const |
348d480f | 11602 | { |
348d480f | 11603 | const struct bp_location *bl; |
001c8c33 | 11604 | int bp_temp; |
79a45e25 | 11605 | struct ui_out *uiout = current_uiout; |
348d480f | 11606 | |
b6433ede | 11607 | bl = bs->bp_location_at.get (); |
348d480f | 11608 | |
7dd8e7ae | 11609 | bp_temp = disposition == disp_del; |
001c8c33 PA |
11610 | if (bl->address != bl->requested_address) |
11611 | breakpoint_adjustment_warning (bl->requested_address, | |
11612 | bl->address, | |
7dd8e7ae TT |
11613 | number, 1); |
11614 | annotate_breakpoint (number); | |
f303dbd6 PA |
11615 | maybe_print_thread_hit_breakpoint (uiout); |
11616 | ||
112e8700 | 11617 | if (uiout->is_mi_like_p ()) |
348d480f | 11618 | { |
112e8700 | 11619 | uiout->field_string ("reason", |
001c8c33 | 11620 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
7dd8e7ae | 11621 | uiout->field_string ("disp", bpdisp_text (disposition)); |
06edf0c0 | 11622 | } |
6a831f06 PA |
11623 | if (bp_temp) |
11624 | uiout->message ("Temporary breakpoint %pF, ", | |
7dd8e7ae | 11625 | signed_field ("bkptno", number)); |
6a831f06 PA |
11626 | else |
11627 | uiout->message ("Breakpoint %pF, ", | |
7dd8e7ae | 11628 | signed_field ("bkptno", number)); |
06edf0c0 | 11629 | |
001c8c33 | 11630 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11631 | } |
11632 | ||
7dd8e7ae | 11633 | void |
b713485d | 11634 | ordinary_breakpoint::print_mention () const |
06edf0c0 | 11635 | { |
112e8700 | 11636 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11637 | return; |
11638 | ||
7dd8e7ae | 11639 | switch (type) |
06edf0c0 PA |
11640 | { |
11641 | case bp_breakpoint: | |
11642 | case bp_gnu_ifunc_resolver: | |
7dd8e7ae | 11643 | if (disposition == disp_del) |
6cb06a8c | 11644 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11645 | else |
6cb06a8c | 11646 | gdb_printf (_("Breakpoint")); |
7dd8e7ae TT |
11647 | gdb_printf (_(" %d"), number); |
11648 | if (type == bp_gnu_ifunc_resolver) | |
6cb06a8c | 11649 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11650 | break; |
11651 | case bp_hardware_breakpoint: | |
7dd8e7ae | 11652 | gdb_printf (_("Hardware assisted breakpoint %d"), number); |
06edf0c0 | 11653 | break; |
e7e0cddf | 11654 | case bp_dprintf: |
7dd8e7ae | 11655 | gdb_printf (_("Dprintf %d"), number); |
e7e0cddf | 11656 | break; |
06edf0c0 PA |
11657 | } |
11658 | ||
7dd8e7ae | 11659 | say_where (this); |
06edf0c0 PA |
11660 | } |
11661 | ||
7dd8e7ae | 11662 | void |
4d1ae558 | 11663 | ordinary_breakpoint::print_recreate (struct ui_file *fp) const |
06edf0c0 | 11664 | { |
7dd8e7ae | 11665 | if (type == bp_breakpoint && disposition == disp_del) |
6cb06a8c | 11666 | gdb_printf (fp, "tbreak"); |
7dd8e7ae | 11667 | else if (type == bp_breakpoint) |
6cb06a8c | 11668 | gdb_printf (fp, "break"); |
7dd8e7ae TT |
11669 | else if (type == bp_hardware_breakpoint |
11670 | && disposition == disp_del) | |
6cb06a8c | 11671 | gdb_printf (fp, "thbreak"); |
7dd8e7ae | 11672 | else if (type == bp_hardware_breakpoint) |
6cb06a8c | 11673 | gdb_printf (fp, "hbreak"); |
06edf0c0 PA |
11674 | else |
11675 | internal_error (__FILE__, __LINE__, | |
7dd8e7ae | 11676 | _("unhandled breakpoint type %d"), (int) type); |
06edf0c0 | 11677 | |
709438c7 | 11678 | gdb_printf (fp, " %s", locspec->to_string ()); |
f00aae0f KS |
11679 | |
11680 | /* Print out extra_string if this breakpoint is pending. It might | |
11681 | contain, for example, conditions that were set by the user. */ | |
7dd8e7ae TT |
11682 | if (loc == NULL && extra_string != NULL) |
11683 | gdb_printf (fp, " %s", extra_string.get ()); | |
f00aae0f | 11684 | |
04d0163c | 11685 | print_recreate_thread (fp); |
06edf0c0 PA |
11686 | } |
11687 | ||
2b5ab5b8 | 11688 | std::vector<symtab_and_line> |
264f9890 PA |
11689 | code_breakpoint::decode_location_spec (location_spec *locspec, |
11690 | program_space *search_pspace) | |
983af33b | 11691 | { |
7464aeaa | 11692 | if (locspec->type () == PROBE_LOCATION_SPEC) |
264f9890 | 11693 | return bkpt_probe_decode_location_spec (this, locspec, search_pspace); |
5d926615 | 11694 | |
264f9890 | 11695 | return decode_location_spec_default (this, locspec, search_pspace); |
983af33b SDJ |
11696 | } |
11697 | ||
06edf0c0 PA |
11698 | /* Virtual table for internal breakpoints. */ |
11699 | ||
c359fff5 TT |
11700 | void |
11701 | internal_breakpoint::re_set () | |
06edf0c0 | 11702 | { |
c359fff5 | 11703 | switch (type) |
06edf0c0 PA |
11704 | { |
11705 | /* Delete overlay event and longjmp master breakpoints; they | |
11706 | will be reset later by breakpoint_re_set. */ | |
11707 | case bp_overlay_event: | |
11708 | case bp_longjmp_master: | |
11709 | case bp_std_terminate_master: | |
11710 | case bp_exception_master: | |
c359fff5 | 11711 | delete_breakpoint (this); |
06edf0c0 PA |
11712 | break; |
11713 | ||
11714 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11715 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11716 | case bp_shlib_event: |
11717 | ||
11718 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11719 | it is set up, we do not want to touch it. */ | |
11720 | case bp_thread_event: | |
11721 | break; | |
11722 | } | |
11723 | } | |
11724 | ||
c359fff5 TT |
11725 | void |
11726 | internal_breakpoint::check_status (bpstat *bs) | |
06edf0c0 | 11727 | { |
c359fff5 | 11728 | if (type == bp_shlib_event) |
a9b3a50f PA |
11729 | { |
11730 | /* If requested, stop when the dynamic linker notifies GDB of | |
11731 | events. This allows the user to get control and place | |
11732 | breakpoints in initializer routines for dynamically loaded | |
11733 | objects (among other things). */ | |
11734 | bs->stop = stop_on_solib_events; | |
11735 | bs->print = stop_on_solib_events; | |
11736 | } | |
11737 | else | |
11738 | bs->stop = 0; | |
06edf0c0 PA |
11739 | } |
11740 | ||
c359fff5 | 11741 | enum print_stop_action |
7bd86313 | 11742 | internal_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11743 | { |
c359fff5 | 11744 | switch (type) |
06edf0c0 | 11745 | { |
348d480f PA |
11746 | case bp_shlib_event: |
11747 | /* Did we stop because the user set the stop_on_solib_events | |
11748 | variable? (If so, we report this as a generic, "Stopped due | |
11749 | to shlib event" message.) */ | |
4e9e993a | 11750 | print_solib_event (false); |
348d480f PA |
11751 | break; |
11752 | ||
11753 | case bp_thread_event: | |
11754 | /* Not sure how we will get here. | |
11755 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11756 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11757 | break; |
11758 | ||
11759 | case bp_overlay_event: | |
11760 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11761 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11762 | break; |
11763 | ||
11764 | case bp_longjmp_master: | |
11765 | /* These should never be enabled. */ | |
6cb06a8c | 11766 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11767 | break; |
11768 | ||
11769 | case bp_std_terminate_master: | |
11770 | /* These should never be enabled. */ | |
6cb06a8c TT |
11771 | gdb_printf (_("std::terminate Master Breakpoint: " |
11772 | "gdb should not stop!\n")); | |
348d480f PA |
11773 | break; |
11774 | ||
11775 | case bp_exception_master: | |
11776 | /* These should never be enabled. */ | |
6cb06a8c TT |
11777 | gdb_printf (_("Exception Master Breakpoint: " |
11778 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11779 | break; |
11780 | } | |
11781 | ||
001c8c33 | 11782 | return PRINT_NOTHING; |
06edf0c0 PA |
11783 | } |
11784 | ||
c359fff5 | 11785 | void |
b713485d | 11786 | internal_breakpoint::print_mention () const |
06edf0c0 PA |
11787 | { |
11788 | /* Nothing to mention. These breakpoints are internal. */ | |
11789 | } | |
11790 | ||
06edf0c0 PA |
11791 | /* Virtual table for momentary breakpoints */ |
11792 | ||
1fd30a47 TT |
11793 | void |
11794 | momentary_breakpoint::re_set () | |
06edf0c0 PA |
11795 | { |
11796 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 11797 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
11798 | Otherwise these should have been blown away via the cleanup chain |
11799 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11800 | } | |
11801 | ||
1fd30a47 TT |
11802 | void |
11803 | momentary_breakpoint::check_status (bpstat *bs) | |
06edf0c0 PA |
11804 | { |
11805 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11806 | } | |
11807 | ||
1fd30a47 | 11808 | enum print_stop_action |
7bd86313 | 11809 | momentary_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11810 | { |
001c8c33 | 11811 | return PRINT_UNKNOWN; |
348d480f PA |
11812 | } |
11813 | ||
1fd30a47 | 11814 | void |
b713485d | 11815 | momentary_breakpoint::print_mention () const |
348d480f | 11816 | { |
06edf0c0 | 11817 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11818 | } |
11819 | ||
e2e4d78b JK |
11820 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
11821 | ||
11822 | It gets cleared already on the removal of the first one of such placed | |
11823 | breakpoints. This is OK as they get all removed altogether. */ | |
11824 | ||
c1fc2657 | 11825 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 11826 | { |
c1fc2657 | 11827 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 11828 | |
c1fc2657 | 11829 | if (tp != NULL) |
e2e4d78b | 11830 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
11831 | } |
11832 | ||
55aa24fb | 11833 | static void |
264f9890 PA |
11834 | bkpt_probe_create_sals_from_location_spec (location_spec *locspec, |
11835 | struct linespec_result *canonical) | |
03ada39e | 11836 | |
55aa24fb SDJ |
11837 | { |
11838 | struct linespec_sals lsal; | |
11839 | ||
264f9890 | 11840 | lsal.sals = parse_probes (locspec, NULL, canonical); |
709438c7 | 11841 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 11842 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
11843 | } |
11844 | ||
6c5b2ebe | 11845 | static std::vector<symtab_and_line> |
264f9890 PA |
11846 | bkpt_probe_decode_location_spec (struct breakpoint *b, |
11847 | location_spec *locspec, | |
11848 | program_space *search_pspace) | |
55aa24fb | 11849 | { |
264f9890 PA |
11850 | std::vector<symtab_and_line> sals |
11851 | = parse_probes (locspec, search_pspace, NULL); | |
6c5b2ebe | 11852 | if (sals.empty ()) |
55aa24fb | 11853 | error (_("probe not found")); |
6c5b2ebe | 11854 | return sals; |
55aa24fb SDJ |
11855 | } |
11856 | ||
779dcceb TT |
11857 | int |
11858 | tracepoint::breakpoint_hit (const struct bp_location *bl, | |
11859 | const address_space *aspace, CORE_ADDR bp_addr, | |
11860 | const target_waitstatus &ws) | |
348d480f PA |
11861 | { |
11862 | /* By definition, the inferior does not report stops at | |
11863 | tracepoints. */ | |
11864 | return 0; | |
74960c60 VP |
11865 | } |
11866 | ||
779dcceb TT |
11867 | void |
11868 | tracepoint::print_one_detail (struct ui_out *uiout) const | |
74960c60 | 11869 | { |
779dcceb | 11870 | if (!static_trace_marker_id.empty ()) |
348d480f | 11871 | { |
7b572efb TT |
11872 | gdb_assert (type == bp_static_tracepoint |
11873 | || type == bp_static_marker_tracepoint); | |
cc59ec59 | 11874 | |
6a831f06 PA |
11875 | uiout->message ("\tmarker id is %pF\n", |
11876 | string_field ("static-tracepoint-marker-string-id", | |
779dcceb | 11877 | static_trace_marker_id.c_str ())); |
348d480f | 11878 | } |
0d381245 VP |
11879 | } |
11880 | ||
779dcceb | 11881 | void |
b713485d | 11882 | tracepoint::print_mention () const |
a474d7c2 | 11883 | { |
112e8700 | 11884 | if (current_uiout->is_mi_like_p ()) |
348d480f | 11885 | return; |
cc59ec59 | 11886 | |
779dcceb | 11887 | switch (type) |
348d480f PA |
11888 | { |
11889 | case bp_tracepoint: | |
6cb06a8c | 11890 | gdb_printf (_("Tracepoint")); |
779dcceb | 11891 | gdb_printf (_(" %d"), number); |
348d480f PA |
11892 | break; |
11893 | case bp_fast_tracepoint: | |
6cb06a8c | 11894 | gdb_printf (_("Fast tracepoint")); |
779dcceb | 11895 | gdb_printf (_(" %d"), number); |
348d480f PA |
11896 | break; |
11897 | case bp_static_tracepoint: | |
7b572efb | 11898 | case bp_static_marker_tracepoint: |
6cb06a8c | 11899 | gdb_printf (_("Static tracepoint")); |
779dcceb | 11900 | gdb_printf (_(" %d"), number); |
348d480f PA |
11901 | break; |
11902 | default: | |
11903 | internal_error (__FILE__, __LINE__, | |
779dcceb | 11904 | _("unhandled tracepoint type %d"), (int) type); |
348d480f PA |
11905 | } |
11906 | ||
779dcceb | 11907 | say_where (this); |
a474d7c2 PA |
11908 | } |
11909 | ||
779dcceb | 11910 | void |
4d1ae558 | 11911 | tracepoint::print_recreate (struct ui_file *fp) const |
a474d7c2 | 11912 | { |
779dcceb | 11913 | if (type == bp_fast_tracepoint) |
6cb06a8c | 11914 | gdb_printf (fp, "ftrace"); |
7b572efb TT |
11915 | else if (type == bp_static_tracepoint |
11916 | || type == bp_static_marker_tracepoint) | |
6cb06a8c | 11917 | gdb_printf (fp, "strace"); |
779dcceb | 11918 | else if (type == bp_tracepoint) |
6cb06a8c | 11919 | gdb_printf (fp, "trace"); |
348d480f PA |
11920 | else |
11921 | internal_error (__FILE__, __LINE__, | |
779dcceb | 11922 | _("unhandled tracepoint type %d"), (int) type); |
cc59ec59 | 11923 | |
709438c7 | 11924 | gdb_printf (fp, " %s", locspec->to_string ()); |
04d0163c | 11925 | print_recreate_thread (fp); |
d9b3f62e | 11926 | |
779dcceb TT |
11927 | if (pass_count) |
11928 | gdb_printf (fp, " passcount %d\n", pass_count); | |
a474d7c2 PA |
11929 | } |
11930 | ||
bac7c5cf | 11931 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
11932 | |
11933 | static void | |
264f9890 PA |
11934 | tracepoint_probe_create_sals_from_location_spec |
11935 | (location_spec *locspec, | |
03ada39e | 11936 | struct linespec_result *canonical) |
55aa24fb SDJ |
11937 | { |
11938 | /* We use the same method for breakpoint on probes. */ | |
264f9890 | 11939 | bkpt_probe_create_sals_from_location_spec (locspec, canonical); |
55aa24fb SDJ |
11940 | } |
11941 | ||
f293a0b5 TT |
11942 | void |
11943 | dprintf_breakpoint::re_set () | |
5c2b4418 | 11944 | { |
b3d5660a | 11945 | re_set_default (); |
5c2b4418 | 11946 | |
f00aae0f | 11947 | /* extra_string should never be non-NULL for dprintf. */ |
f293a0b5 | 11948 | gdb_assert (extra_string != NULL); |
5c2b4418 HZ |
11949 | |
11950 | /* 1 - connect to target 1, that can run breakpoint commands. | |
11951 | 2 - create a dprintf, which resolves fine. | |
11952 | 3 - disconnect from target 1 | |
11953 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
11954 | ||
11955 | After steps #3/#4, you'll want the dprintf command list to | |
11956 | be updated, because target 1 and 2 may well return different | |
11957 | answers for target_can_run_breakpoint_commands(). | |
11958 | Given absence of finer grained resetting, we get to do | |
11959 | it all the time. */ | |
f293a0b5 TT |
11960 | if (extra_string != NULL) |
11961 | update_dprintf_command_list (this); | |
5c2b4418 HZ |
11962 | } |
11963 | ||
f293a0b5 | 11964 | /* Implement the "print_recreate" method for dprintf. */ |
2d9442cc | 11965 | |
f293a0b5 | 11966 | void |
4d1ae558 | 11967 | dprintf_breakpoint::print_recreate (struct ui_file *fp) const |
2d9442cc | 11968 | { |
709438c7 | 11969 | gdb_printf (fp, "dprintf %s,%s", locspec->to_string (), extra_string.get ()); |
04d0163c | 11970 | print_recreate_thread (fp); |
2d9442cc HZ |
11971 | } |
11972 | ||
f293a0b5 | 11973 | /* Implement the "after_condition_true" method for dprintf. |
9d6e6e84 HZ |
11974 | |
11975 | dprintf's are implemented with regular commands in their command | |
11976 | list, but we run the commands here instead of before presenting the | |
11977 | stop to the user, as dprintf's don't actually cause a stop. This | |
11978 | also makes it so that the commands of multiple dprintfs at the same | |
11979 | address are all handled. */ | |
11980 | ||
f293a0b5 TT |
11981 | void |
11982 | dprintf_breakpoint::after_condition_true (struct bpstat *bs) | |
9d6e6e84 | 11983 | { |
9d6e6e84 HZ |
11984 | /* dprintf's never cause a stop. This wasn't set in the |
11985 | check_status hook instead because that would make the dprintf's | |
11986 | condition not be evaluated. */ | |
11987 | bs->stop = 0; | |
11988 | ||
11989 | /* Run the command list here. Take ownership of it instead of | |
11990 | copying. We never want these commands to run later in | |
11991 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
11992 | be set at same address as this dprintf, or even if running the | |
11993 | commands here throws. */ | |
9c95aea1 KB |
11994 | counted_command_line cmds = std::move (bs->commands); |
11995 | gdb_assert (cmds != nullptr); | |
11996 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
11997 | } |
11998 | ||
983af33b SDJ |
11999 | /* The breakpoint_ops structure to be used on static tracepoints with |
12000 | markers (`-m'). */ | |
12001 | ||
12002 | static void | |
264f9890 PA |
12003 | strace_marker_create_sals_from_location_spec (location_spec *locspec, |
12004 | struct linespec_result *canonical) | |
983af33b SDJ |
12005 | { |
12006 | struct linespec_sals lsal; | |
f00aae0f | 12007 | const char *arg_start, *arg; |
983af33b | 12008 | |
40d97ee2 | 12009 | arg = arg_start = as_linespec_location_spec (locspec)->spec_string; |
f00aae0f | 12010 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12011 | |
f2fc3015 TT |
12012 | std::string str (arg_start, arg - arg_start); |
12013 | const char *ptr = str.c_str (); | |
264f9890 PA |
12014 | canonical->locspec |
12015 | = new_linespec_location_spec (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12016 | |
709438c7 | 12017 | lsal.canonical = xstrdup (canonical->locspec->to_string ()); |
6c5b2ebe | 12018 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12019 | } |
12020 | ||
12021 | static void | |
12022 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12023 | struct linespec_result *canonical, | |
e1e01040 PA |
12024 | gdb::unique_xmalloc_ptr<char> cond_string, |
12025 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12026 | enum bptype type_wanted, |
12027 | enum bpdisp disposition, | |
12028 | int thread, | |
12029 | int task, int ignore_count, | |
983af33b | 12030 | int from_tty, int enabled, |
44f238bb | 12031 | int internal, unsigned flags) |
983af33b | 12032 | { |
6c5b2ebe | 12033 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12034 | |
12035 | /* If the user is creating a static tracepoint by marker id | |
12036 | (strace -m MARKER_ID), then store the sals index, so that | |
12037 | breakpoint_re_set can try to match up which of the newly | |
12038 | found markers corresponds to this one, and, don't try to | |
12039 | expand multiple locations for each sal, given than SALS | |
12040 | already should contain all sals for MARKER_ID. */ | |
12041 | ||
6c5b2ebe | 12042 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12043 | { |
5c1ddcb6 | 12044 | location_spec_up locspec = canonical->locspec->clone (); |
983af33b | 12045 | |
3b003a61 PA |
12046 | std::unique_ptr<tracepoint> tp |
12047 | (new tracepoint (gdbarch, | |
12048 | type_wanted, | |
12049 | lsal.sals[i], | |
264f9890 | 12050 | std::move (locspec), |
3b003a61 PA |
12051 | NULL, |
12052 | std::move (cond_string), | |
12053 | std::move (extra_string), | |
12054 | disposition, | |
12055 | thread, task, ignore_count, | |
12056 | from_tty, enabled, flags, | |
12057 | canonical->special_display)); | |
12058 | ||
983af33b SDJ |
12059 | /* Given that its possible to have multiple markers with |
12060 | the same string id, if the user is creating a static | |
12061 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12062 | store the sals index, so that breakpoint_re_set can | |
12063 | try to match up which of the newly found markers | |
12064 | corresponds to this one */ | |
12065 | tp->static_trace_marker_id_idx = i; | |
12066 | ||
b270e6f9 | 12067 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12068 | } |
12069 | } | |
12070 | ||
6d7a8c56 | 12071 | std::vector<symtab_and_line> |
264f9890 PA |
12072 | static_marker_tracepoint::decode_location_spec (location_spec *locspec, |
12073 | program_space *search_pspace) | |
983af33b | 12074 | { |
40d97ee2 | 12075 | const char *s = as_linespec_location_spec (locspec)->spec_string; |
983af33b | 12076 | |
6c5b2ebe | 12077 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
6d7a8c56 | 12078 | if (sals.size () > static_trace_marker_id_idx) |
983af33b | 12079 | { |
6d7a8c56 | 12080 | sals[0] = sals[static_trace_marker_id_idx]; |
6c5b2ebe PA |
12081 | sals.resize (1); |
12082 | return sals; | |
983af33b SDJ |
12083 | } |
12084 | else | |
6d7a8c56 | 12085 | error (_("marker %s not found"), static_trace_marker_id.c_str ()); |
983af33b SDJ |
12086 | } |
12087 | ||
8613a476 TT |
12088 | /* Static tracepoints with marker (`-m'). */ |
12089 | static struct breakpoint_ops strace_marker_breakpoint_ops = | |
12090 | { | |
264f9890 | 12091 | strace_marker_create_sals_from_location_spec, |
8613a476 TT |
12092 | strace_marker_create_breakpoints_sal, |
12093 | }; | |
983af33b SDJ |
12094 | |
12095 | static int | |
12096 | strace_marker_p (struct breakpoint *b) | |
12097 | { | |
7b572efb | 12098 | return b->type == bp_static_marker_tracepoint; |
983af33b SDJ |
12099 | } |
12100 | ||
53a5351d | 12101 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12102 | structures. */ |
c906108c SS |
12103 | |
12104 | void | |
fba45db2 | 12105 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12106 | { |
8a3fe4f8 | 12107 | gdb_assert (bpt != NULL); |
c906108c | 12108 | |
4a64f543 MS |
12109 | /* Has this bp already been deleted? This can happen because |
12110 | multiple lists can hold pointers to bp's. bpstat lists are | |
12111 | especial culprits. | |
12112 | ||
12113 | One example of this happening is a watchpoint's scope bp. When | |
12114 | the scope bp triggers, we notice that the watchpoint is out of | |
12115 | scope, and delete it. We also delete its scope bp. But the | |
12116 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12117 | That bpstat is then checked for auto-deleting bp's, which are | |
12118 | deleted. | |
12119 | ||
12120 | A real solution to this problem might involve reference counts in | |
12121 | bp's, and/or giving them pointers back to their referencing | |
12122 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12123 | storage when no more references were extent. A cheaper bandaid | |
12124 | was chosen. */ | |
c906108c SS |
12125 | if (bpt->type == bp_none) |
12126 | return; | |
12127 | ||
4a64f543 MS |
12128 | /* At least avoid this stale reference until the reference counting |
12129 | of breakpoints gets resolved. */ | |
d0fb5eae | 12130 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12131 | { |
d0fb5eae | 12132 | struct breakpoint *related; |
3a5c3e22 | 12133 | struct watchpoint *w; |
d0fb5eae JK |
12134 | |
12135 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12136 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12137 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12138 | w = (struct watchpoint *) bpt; |
12139 | else | |
12140 | w = NULL; | |
12141 | if (w != NULL) | |
12142 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12143 | |
12144 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12145 | for (related = bpt; related->related_breakpoint != bpt; | |
12146 | related = related->related_breakpoint); | |
12147 | related->related_breakpoint = bpt->related_breakpoint; | |
12148 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12149 | } |
12150 | ||
a9634178 TJB |
12151 | /* watch_command_1 creates a watchpoint but only sets its number if |
12152 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12153 | a problem in that process, we'll be asked to delete the half-created | |
12154 | watchpoint. In that case, don't announce the deletion. */ | |
12155 | if (bpt->number) | |
76727919 | 12156 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12157 | |
c906108c SS |
12158 | if (breakpoint_chain == bpt) |
12159 | breakpoint_chain = bpt->next; | |
12160 | ||
43892fdf | 12161 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12162 | if (b->next == bpt) |
01add95b SM |
12163 | { |
12164 | b->next = bpt->next; | |
12165 | break; | |
12166 | } | |
c906108c | 12167 | |
f431efe5 PA |
12168 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12169 | been freed. */ | |
12170 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12171 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12172 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12173 | commands are associated with the bpstat; if we remove it here, | |
12174 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12175 | event-top.c won't do anything, and temporary breakpoints with | |
12176 | commands won't work. */ | |
12177 | ||
12178 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12179 | ||
4a64f543 MS |
12180 | /* Now that breakpoint is removed from breakpoint list, update the |
12181 | global location list. This will remove locations that used to | |
12182 | belong to this breakpoint. Do this before freeing the breakpoint | |
12183 | itself, since remove_breakpoint looks at location's owner. It | |
12184 | might be better design to have location completely | |
12185 | self-contained, but it's not the case now. */ | |
44702360 | 12186 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12187 | |
4a64f543 MS |
12188 | /* On the chance that someone will soon try again to delete this |
12189 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12190 | bpt->type = bp_none; |
4d01a485 | 12191 | delete bpt; |
c906108c SS |
12192 | } |
12193 | ||
51be5b68 PA |
12194 | /* Iterator function to call a user-provided callback function once |
12195 | for each of B and its related breakpoints. */ | |
12196 | ||
12197 | static void | |
12198 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12199 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12200 | { |
12201 | struct breakpoint *related; | |
12202 | ||
12203 | related = b; | |
12204 | do | |
12205 | { | |
12206 | struct breakpoint *next; | |
12207 | ||
12208 | /* FUNCTION may delete RELATED. */ | |
12209 | next = related->related_breakpoint; | |
12210 | ||
12211 | if (next == related) | |
12212 | { | |
12213 | /* RELATED is the last ring entry. */ | |
48649e1b | 12214 | function (related); |
51be5b68 PA |
12215 | |
12216 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12217 | B. There's nothing left to do anyway, so just break | |
12218 | out. */ | |
12219 | break; | |
12220 | } | |
12221 | else | |
48649e1b | 12222 | function (related); |
51be5b68 PA |
12223 | |
12224 | related = next; | |
12225 | } | |
12226 | while (related != b); | |
12227 | } | |
95a42b64 | 12228 | |
4495129a | 12229 | static void |
981a3fb3 | 12230 | delete_command (const char *arg, int from_tty) |
c906108c | 12231 | { |
ea9365bb TT |
12232 | dont_repeat (); |
12233 | ||
c906108c SS |
12234 | if (arg == 0) |
12235 | { | |
12236 | int breaks_to_delete = 0; | |
12237 | ||
46c6471b | 12238 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12239 | internal breakpoints, these have to be deleted with an |
12240 | explicit breakpoint number argument. */ | |
43892fdf | 12241 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12242 | if (user_breakpoint_p (b)) |
973d738b DJ |
12243 | { |
12244 | breaks_to_delete = 1; | |
12245 | break; | |
12246 | } | |
c906108c SS |
12247 | |
12248 | /* Ask user only if there are some breakpoints to delete. */ | |
12249 | if (!from_tty | |
e2e0b3e5 | 12250 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12251 | for (breakpoint *b : all_breakpoints_safe ()) |
12252 | if (user_breakpoint_p (b)) | |
12253 | delete_breakpoint (b); | |
c906108c SS |
12254 | } |
12255 | else | |
48649e1b | 12256 | map_breakpoint_numbers |
b926417a | 12257 | (arg, [&] (breakpoint *br) |
48649e1b | 12258 | { |
b926417a | 12259 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12260 | }); |
c906108c SS |
12261 | } |
12262 | ||
c2f4122d PA |
12263 | /* Return true if all locations of B bound to PSPACE are pending. If |
12264 | PSPACE is NULL, all locations of all program spaces are | |
12265 | considered. */ | |
12266 | ||
0d381245 | 12267 | static int |
c2f4122d | 12268 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12269 | { |
40cb8ca5 | 12270 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12271 | if ((pspace == NULL |
12272 | || loc->pspace == pspace) | |
12273 | && !loc->shlib_disabled | |
8645ff69 | 12274 | && !loc->pspace->executing_startup) |
0d381245 VP |
12275 | return 0; |
12276 | return 1; | |
fe3f5fa8 VP |
12277 | } |
12278 | ||
776592bf DE |
12279 | /* Subroutine of update_breakpoint_locations to simplify it. |
12280 | Return non-zero if multiple fns in list LOC have the same name. | |
12281 | Null names are ignored. */ | |
12282 | ||
12283 | static int | |
12284 | ambiguous_names_p (struct bp_location *loc) | |
12285 | { | |
12286 | struct bp_location *l; | |
2698f5ea | 12287 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12288 | xcalloc, xfree)); |
776592bf DE |
12289 | |
12290 | for (l = loc; l != NULL; l = l->next) | |
12291 | { | |
12292 | const char **slot; | |
23d6ee64 | 12293 | const char *name = l->function_name.get (); |
776592bf DE |
12294 | |
12295 | /* Allow for some names to be NULL, ignore them. */ | |
12296 | if (name == NULL) | |
12297 | continue; | |
12298 | ||
c1fb9836 | 12299 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12300 | INSERT); |
4a64f543 MS |
12301 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12302 | returns NULL. */ | |
776592bf | 12303 | if (*slot != NULL) |
c1fb9836 | 12304 | return 1; |
776592bf DE |
12305 | *slot = name; |
12306 | } | |
12307 | ||
776592bf DE |
12308 | return 0; |
12309 | } | |
12310 | ||
0fb4aa4b PA |
12311 | /* When symbols change, it probably means the sources changed as well, |
12312 | and it might mean the static tracepoint markers are no longer at | |
12313 | the same address or line numbers they used to be at last we | |
12314 | checked. Losing your static tracepoints whenever you rebuild is | |
12315 | undesirable. This function tries to resync/rematch gdb static | |
12316 | tracepoints with the markers on the target, for static tracepoints | |
12317 | that have not been set by marker id. Static tracepoint that have | |
12318 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12319 | The heuristic is: | |
12320 | ||
12321 | 1) For a tracepoint set at a specific address, look for a marker at | |
12322 | the old PC. If one is found there, assume to be the same marker. | |
12323 | If the name / string id of the marker found is different from the | |
12324 | previous known name, assume that means the user renamed the marker | |
12325 | in the sources, and output a warning. | |
12326 | ||
12327 | 2) For a tracepoint set at a given line number, look for a marker | |
12328 | at the new address of the old line number. If one is found there, | |
12329 | assume to be the same marker. If the name / string id of the | |
12330 | marker found is different from the previous known name, assume that | |
12331 | means the user renamed the marker in the sources, and output a | |
12332 | warning. | |
12333 | ||
12334 | 3) If a marker is no longer found at the same address or line, it | |
12335 | may mean the marker no longer exists. But it may also just mean | |
12336 | the code changed a bit. Maybe the user added a few lines of code | |
12337 | that made the marker move up or down (in line number terms). Ask | |
12338 | the target for info about the marker with the string id as we knew | |
12339 | it. If found, update line number and address in the matching | |
12340 | static tracepoint. This will get confused if there's more than one | |
12341 | marker with the same ID (possible in UST, although unadvised | |
12342 | precisely because it confuses tools). */ | |
12343 | ||
12344 | static struct symtab_and_line | |
12345 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12346 | { | |
d9b3f62e | 12347 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12348 | struct static_tracepoint_marker marker; |
12349 | CORE_ADDR pc; | |
0fb4aa4b PA |
12350 | |
12351 | pc = sal.pc; | |
12352 | if (sal.line) | |
12353 | find_line_pc (sal.symtab, sal.line, &pc); | |
12354 | ||
12355 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12356 | { | |
5d9310c4 | 12357 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12358 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12359 | b->number, tp->static_trace_marker_id.c_str (), |
12360 | marker.str_id.c_str ()); | |
0fb4aa4b | 12361 | |
5d9310c4 | 12362 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12363 | |
12364 | return sal; | |
12365 | } | |
12366 | ||
12367 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12368 | by string ID. */ | |
12369 | if (!sal.explicit_pc | |
12370 | && sal.line != 0 | |
12371 | && sal.symtab != NULL | |
5d9310c4 | 12372 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12373 | { |
5d9310c4 SM |
12374 | std::vector<static_tracepoint_marker> markers |
12375 | = target_static_tracepoint_markers_by_strid | |
12376 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12377 | |
5d9310c4 | 12378 | if (!markers.empty ()) |
0fb4aa4b | 12379 | { |
0fb4aa4b | 12380 | struct symbol *sym; |
80e1d417 | 12381 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12382 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 12383 | |
5d9310c4 | 12384 | tpmarker = &markers[0]; |
0fb4aa4b | 12385 | |
5d9310c4 | 12386 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12387 | |
12388 | warning (_("marker for static tracepoint %d (%s) not " | |
12389 | "found at previous line number"), | |
5d9310c4 | 12390 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12391 | |
51abb421 | 12392 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12393 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12394 | uiout->text ("Now in "); |
0fb4aa4b PA |
12395 | if (sym) |
12396 | { | |
987012b8 | 12397 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12398 | function_name_style.style ()); |
112e8700 | 12399 | uiout->text (" at "); |
0fb4aa4b | 12400 | } |
112e8700 | 12401 | uiout->field_string ("file", |
cbe56571 | 12402 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12403 | file_name_style.style ()); |
112e8700 | 12404 | uiout->text (":"); |
0fb4aa4b | 12405 | |
112e8700 | 12406 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12407 | { |
0b0865da | 12408 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12409 | |
112e8700 | 12410 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12411 | } |
12412 | ||
381befee | 12413 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12414 | uiout->text ("\n"); |
0fb4aa4b | 12415 | |
80e1d417 | 12416 | b->loc->line_number = sal2.line; |
2f202fde | 12417 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12418 | |
40d97ee2 PA |
12419 | std::unique_ptr<explicit_location_spec> els |
12420 | (new explicit_location_spec ()); | |
12421 | els->source_filename | |
12422 | = xstrdup (symtab_to_filename_for_display (sal2.symtab)); | |
12423 | els->line_offset.offset = b->loc->line_number; | |
12424 | els->line_offset.sign = LINE_OFFSET_NONE; | |
12425 | ||
12426 | b->locspec = std::move (els); | |
0fb4aa4b PA |
12427 | |
12428 | /* Might be nice to check if function changed, and warn if | |
12429 | so. */ | |
0fb4aa4b PA |
12430 | } |
12431 | } | |
12432 | return sal; | |
12433 | } | |
12434 | ||
8d3788bd VP |
12435 | /* Returns 1 iff locations A and B are sufficiently same that |
12436 | we don't need to report breakpoint as changed. */ | |
12437 | ||
12438 | static int | |
12439 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
12440 | { | |
12441 | while (a && b) | |
12442 | { | |
12443 | if (a->address != b->address) | |
12444 | return 0; | |
12445 | ||
12446 | if (a->shlib_disabled != b->shlib_disabled) | |
12447 | return 0; | |
12448 | ||
12449 | if (a->enabled != b->enabled) | |
12450 | return 0; | |
12451 | ||
b5fa468f TBA |
12452 | if (a->disabled_by_cond != b->disabled_by_cond) |
12453 | return 0; | |
12454 | ||
8d3788bd VP |
12455 | a = a->next; |
12456 | b = b->next; | |
12457 | } | |
12458 | ||
12459 | if ((a == NULL) != (b == NULL)) | |
12460 | return 0; | |
12461 | ||
12462 | return 1; | |
12463 | } | |
12464 | ||
c2f4122d PA |
12465 | /* Split all locations of B that are bound to PSPACE out of B's |
12466 | location list to a separate list and return that list's head. If | |
12467 | PSPACE is NULL, hoist out all locations of B. */ | |
12468 | ||
12469 | static struct bp_location * | |
12470 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12471 | { | |
12472 | struct bp_location head; | |
12473 | struct bp_location *i = b->loc; | |
12474 | struct bp_location **i_link = &b->loc; | |
12475 | struct bp_location *hoisted = &head; | |
12476 | ||
12477 | if (pspace == NULL) | |
12478 | { | |
12479 | i = b->loc; | |
12480 | b->loc = NULL; | |
12481 | return i; | |
12482 | } | |
12483 | ||
12484 | head.next = NULL; | |
12485 | ||
12486 | while (i != NULL) | |
12487 | { | |
12488 | if (i->pspace == pspace) | |
12489 | { | |
12490 | *i_link = i->next; | |
12491 | i->next = NULL; | |
12492 | hoisted->next = i; | |
12493 | hoisted = i; | |
12494 | } | |
12495 | else | |
12496 | i_link = &i->next; | |
12497 | i = *i_link; | |
12498 | } | |
12499 | ||
12500 | return head.next; | |
12501 | } | |
12502 | ||
12503 | /* Create new breakpoint locations for B (a hardware or software | |
12504 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12505 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12506 | FILTER_PSPACE. Locations of other program spaces are left | |
12507 | untouched. */ | |
f1310107 | 12508 | |
0e30163f | 12509 | void |
74421c0b | 12510 | update_breakpoint_locations (code_breakpoint *b, |
c2f4122d | 12511 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12512 | gdb::array_view<const symtab_and_line> sals, |
12513 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12514 | { |
c2f4122d | 12515 | struct bp_location *existing_locations; |
0d381245 | 12516 | |
6c5b2ebe | 12517 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12518 | { |
12519 | /* Ranged breakpoints have only one start location and one end | |
12520 | location. */ | |
12521 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12522 | gdb_printf (gdb_stderr, |
12523 | _("Could not reset ranged breakpoint %d: " | |
12524 | "multiple locations found\n"), | |
12525 | b->number); | |
f8eba3c6 TT |
12526 | return; |
12527 | } | |
f1310107 | 12528 | |
4a64f543 MS |
12529 | /* If there's no new locations, and all existing locations are |
12530 | pending, don't do anything. This optimizes the common case where | |
12531 | all locations are in the same shared library, that was unloaded. | |
12532 | We'd like to retain the location, so that when the library is | |
12533 | loaded again, we don't loose the enabled/disabled status of the | |
12534 | individual locations. */ | |
6c5b2ebe | 12535 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12536 | return; |
12537 | ||
c2f4122d | 12538 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12539 | |
6c5b2ebe | 12540 | for (const auto &sal : sals) |
fe3f5fa8 | 12541 | { |
f8eba3c6 TT |
12542 | struct bp_location *new_loc; |
12543 | ||
6c5b2ebe | 12544 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12545 | |
06615628 | 12546 | new_loc = b->add_location (sal); |
fe3f5fa8 | 12547 | |
0d381245 VP |
12548 | /* Reparse conditions, they might contain references to the |
12549 | old symtab. */ | |
12550 | if (b->cond_string != NULL) | |
12551 | { | |
bbc13ae3 | 12552 | const char *s; |
fe3f5fa8 | 12553 | |
6f781ee3 | 12554 | s = b->cond_string.get (); |
a70b8144 | 12555 | try |
0d381245 | 12556 | { |
6c5b2ebe PA |
12557 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12558 | block_for_pc (sal.pc), | |
0d381245 VP |
12559 | 0); |
12560 | } | |
230d2906 | 12561 | catch (const gdb_exception_error &e) |
0d381245 | 12562 | { |
b5fa468f | 12563 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12564 | } |
12565 | } | |
fe3f5fa8 | 12566 | |
6c5b2ebe | 12567 | if (!sals_end.empty ()) |
f1310107 | 12568 | { |
6c5b2ebe | 12569 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12570 | |
6c5b2ebe | 12571 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12572 | } |
0d381245 | 12573 | } |
fe3f5fa8 | 12574 | |
4a64f543 MS |
12575 | /* If possible, carry over 'disable' status from existing |
12576 | breakpoints. */ | |
0d381245 VP |
12577 | { |
12578 | struct bp_location *e = existing_locations; | |
776592bf DE |
12579 | /* If there are multiple breakpoints with the same function name, |
12580 | e.g. for inline functions, comparing function names won't work. | |
12581 | Instead compare pc addresses; this is just a heuristic as things | |
12582 | may have moved, but in practice it gives the correct answer | |
12583 | often enough until a better solution is found. */ | |
12584 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12585 | ||
0d381245 VP |
12586 | for (; e; e = e->next) |
12587 | { | |
b5fa468f | 12588 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12589 | { |
776592bf DE |
12590 | if (have_ambiguous_names) |
12591 | { | |
40cb8ca5 | 12592 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12593 | { |
12594 | /* Ignore software vs hardware location type at | |
12595 | this point, because with "set breakpoint | |
12596 | auto-hw", after a re-set, locations that were | |
12597 | hardware can end up as software, or vice versa. | |
12598 | As mentioned above, this is an heuristic and in | |
12599 | practice should give the correct answer often | |
12600 | enough. */ | |
12601 | if (breakpoint_locations_match (e, l, true)) | |
12602 | { | |
b5fa468f TBA |
12603 | l->enabled = e->enabled; |
12604 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12605 | break; |
12606 | } | |
12607 | } | |
776592bf DE |
12608 | } |
12609 | else | |
12610 | { | |
40cb8ca5 | 12611 | for (bp_location *l : b->locations ()) |
776592bf | 12612 | if (l->function_name |
23d6ee64 TT |
12613 | && strcmp (e->function_name.get (), |
12614 | l->function_name.get ()) == 0) | |
776592bf | 12615 | { |
b5fa468f TBA |
12616 | l->enabled = e->enabled; |
12617 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12618 | break; |
12619 | } | |
12620 | } | |
0d381245 VP |
12621 | } |
12622 | } | |
12623 | } | |
fe3f5fa8 | 12624 | |
8d3788bd | 12625 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12626 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12627 | } |
12628 | ||
264f9890 | 12629 | /* Find the SaL locations corresponding to the given LOCSPEC. |
ef23e705 TJB |
12630 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12631 | ||
2c9a6d72 TT |
12632 | std::vector<symtab_and_line> |
12633 | code_breakpoint::location_spec_to_sals (location_spec *locspec, | |
12634 | struct program_space *search_pspace, | |
12635 | int *found) | |
ef23e705 | 12636 | { |
cc06b668 | 12637 | struct gdb_exception exception; |
ef23e705 | 12638 | |
6c5b2ebe PA |
12639 | std::vector<symtab_and_line> sals; |
12640 | ||
a70b8144 | 12641 | try |
ef23e705 | 12642 | { |
2c9a6d72 | 12643 | sals = decode_location_spec (locspec, search_pspace); |
ef23e705 | 12644 | } |
94aeb44b | 12645 | catch (gdb_exception_error &e) |
ef23e705 TJB |
12646 | { |
12647 | int not_found_and_ok = 0; | |
492d29ea | 12648 | |
ef23e705 TJB |
12649 | /* For pending breakpoints, it's expected that parsing will |
12650 | fail until the right shared library is loaded. User has | |
12651 | already told to create pending breakpoints and don't need | |
12652 | extra messages. If breakpoint is in bp_shlib_disabled | |
12653 | state, then user already saw the message about that | |
12654 | breakpoint being disabled, and don't want to see more | |
12655 | errors. */ | |
58438ac1 | 12656 | if (e.error == NOT_FOUND_ERROR |
2c9a6d72 TT |
12657 | && (condition_not_parsed |
12658 | || (loc != NULL | |
c2f4122d | 12659 | && search_pspace != NULL |
2c9a6d72 TT |
12660 | && loc->pspace != search_pspace) |
12661 | || (loc && loc->shlib_disabled) | |
12662 | || (loc && loc->pspace->executing_startup) | |
12663 | || enable_state == bp_disabled)) | |
ef23e705 TJB |
12664 | not_found_and_ok = 1; |
12665 | ||
12666 | if (!not_found_and_ok) | |
12667 | { | |
12668 | /* We surely don't want to warn about the same breakpoint | |
12669 | 10 times. One solution, implemented here, is disable | |
12670 | the breakpoint on error. Another solution would be to | |
12671 | have separate 'warning emitted' flag. Since this | |
12672 | happens only when a binary has changed, I don't know | |
12673 | which approach is better. */ | |
2c9a6d72 | 12674 | enable_state = bp_disabled; |
eedc3f4f | 12675 | throw; |
ef23e705 | 12676 | } |
94aeb44b TT |
12677 | |
12678 | exception = std::move (e); | |
ef23e705 TJB |
12679 | } |
12680 | ||
492d29ea | 12681 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12682 | { |
6c5b2ebe PA |
12683 | for (auto &sal : sals) |
12684 | resolve_sal_pc (&sal); | |
2c9a6d72 | 12685 | if (condition_not_parsed && extra_string != NULL) |
ef23e705 | 12686 | { |
2c9a6d72 TT |
12687 | gdb::unique_xmalloc_ptr<char> local_cond, local_extra; |
12688 | int local_thread, local_task; | |
ef23e705 | 12689 | |
2c9a6d72 TT |
12690 | find_condition_and_thread_for_sals (sals, extra_string.get (), |
12691 | &local_cond, &local_thread, | |
12692 | &local_task, &local_extra); | |
12693 | gdb_assert (cond_string == nullptr); | |
12694 | if (local_cond != nullptr) | |
12695 | cond_string = std::move (local_cond); | |
12696 | thread = local_thread; | |
12697 | task = local_task; | |
12698 | if (local_extra != nullptr) | |
12699 | extra_string = std::move (local_extra); | |
12700 | condition_not_parsed = 0; | |
ef23e705 TJB |
12701 | } |
12702 | ||
2c9a6d72 TT |
12703 | if (type == bp_static_tracepoint) |
12704 | sals[0] = update_static_tracepoint (this, sals[0]); | |
ef23e705 | 12705 | |
58438ac1 TT |
12706 | *found = 1; |
12707 | } | |
12708 | else | |
12709 | *found = 0; | |
ef23e705 TJB |
12710 | |
12711 | return sals; | |
12712 | } | |
12713 | ||
348d480f PA |
12714 | /* The default re_set method, for typical hardware or software |
12715 | breakpoints. Reevaluate the breakpoint and recreate its | |
12716 | locations. */ | |
12717 | ||
b3d5660a TT |
12718 | void |
12719 | code_breakpoint::re_set_default () | |
ef23e705 | 12720 | { |
c2f4122d | 12721 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 12722 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 12723 | |
6c5b2ebe | 12724 | int found; |
2c9a6d72 TT |
12725 | std::vector<symtab_and_line> sals = location_spec_to_sals (locspec.get (), |
12726 | filter_pspace, | |
12727 | &found); | |
ef23e705 | 12728 | if (found) |
6c5b2ebe | 12729 | expanded = std::move (sals); |
ef23e705 | 12730 | |
b3d5660a | 12731 | if (locspec_range_end != nullptr) |
f1310107 | 12732 | { |
6c5b2ebe | 12733 | std::vector<symtab_and_line> sals_end |
2c9a6d72 | 12734 | = location_spec_to_sals (locspec_range_end.get (), |
264f9890 | 12735 | filter_pspace, &found); |
f1310107 | 12736 | if (found) |
6c5b2ebe | 12737 | expanded_end = std::move (sals_end); |
f1310107 TJB |
12738 | } |
12739 | ||
b3d5660a | 12740 | update_breakpoint_locations (this, filter_pspace, expanded, expanded_end); |
28010a5d PA |
12741 | } |
12742 | ||
983af33b SDJ |
12743 | /* Default method for creating SALs from an address string. It basically |
12744 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12745 | ||
12746 | static void | |
264f9890 PA |
12747 | create_sals_from_location_spec_default (location_spec *locspec, |
12748 | struct linespec_result *canonical) | |
983af33b | 12749 | { |
264f9890 | 12750 | parse_breakpoint_sals (locspec, canonical); |
983af33b SDJ |
12751 | } |
12752 | ||
983af33b | 12753 | /* Decode the line represented by S by calling decode_line_full. This is the |
5f700d83 | 12754 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 12755 | |
6c5b2ebe | 12756 | static std::vector<symtab_and_line> |
264f9890 PA |
12757 | decode_location_spec_default (struct breakpoint *b, |
12758 | location_spec *locspec, | |
12759 | program_space *search_pspace) | |
983af33b SDJ |
12760 | { |
12761 | struct linespec_result canonical; | |
12762 | ||
264f9890 | 12763 | decode_line_full (locspec, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 12764 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 12765 | b->filter.get ()); |
983af33b SDJ |
12766 | |
12767 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 12768 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 12769 | |
6c5b2ebe | 12770 | if (!canonical.lsals.empty ()) |
983af33b | 12771 | { |
6c5b2ebe PA |
12772 | const linespec_sals &lsal = canonical.lsals[0]; |
12773 | return std::move (lsal.sals); | |
983af33b | 12774 | } |
6c5b2ebe | 12775 | return {}; |
983af33b SDJ |
12776 | } |
12777 | ||
bf469271 | 12778 | /* Reset a breakpoint. */ |
c906108c | 12779 | |
bf469271 PA |
12780 | static void |
12781 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 12782 | { |
fdf44873 TT |
12783 | input_radix = b->input_radix; |
12784 | set_language (b->language); | |
c906108c | 12785 | |
c47614fe | 12786 | b->re_set (); |
c906108c SS |
12787 | } |
12788 | ||
c2f4122d PA |
12789 | /* Re-set breakpoint locations for the current program space. |
12790 | Locations bound to other program spaces are left untouched. */ | |
12791 | ||
c906108c | 12792 | void |
69de3c6a | 12793 | breakpoint_re_set (void) |
c906108c | 12794 | { |
c5aa993b | 12795 | { |
fdf44873 TT |
12796 | scoped_restore_current_language save_language; |
12797 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 12798 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 12799 | |
8e817061 JB |
12800 | /* breakpoint_re_set_one sets the current_language to the language |
12801 | of the breakpoint it is resetting (see prepare_re_set_context) | |
12802 | before re-evaluating the breakpoint's location. This change can | |
12803 | unfortunately get undone by accident if the language_mode is set | |
12804 | to auto, and we either switch frames, or more likely in this context, | |
12805 | we select the current frame. | |
12806 | ||
12807 | We prevent this by temporarily turning the language_mode to | |
12808 | language_mode_manual. We restore it once all breakpoints | |
12809 | have been reset. */ | |
12810 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
12811 | language_mode = language_mode_manual; | |
12812 | ||
5ed8105e PA |
12813 | /* Note: we must not try to insert locations until after all |
12814 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
12815 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
12816 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 12817 | |
1428b37a | 12818 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 12819 | { |
a70b8144 | 12820 | try |
bf469271 PA |
12821 | { |
12822 | breakpoint_re_set_one (b); | |
12823 | } | |
230d2906 | 12824 | catch (const gdb_exception &ex) |
bf469271 PA |
12825 | { |
12826 | exception_fprintf (gdb_stderr, ex, | |
12827 | "Error in re-setting breakpoint %d: ", | |
12828 | b->number); | |
12829 | } | |
5ed8105e | 12830 | } |
5ed8105e PA |
12831 | |
12832 | jit_breakpoint_re_set (); | |
12833 | } | |
6c95b8df | 12834 | |
af02033e PP |
12835 | create_overlay_event_breakpoint (); |
12836 | create_longjmp_master_breakpoint (); | |
12837 | create_std_terminate_master_breakpoint (); | |
186c406b | 12838 | create_exception_master_breakpoint (); |
2a7f3dff PA |
12839 | |
12840 | /* Now we can insert. */ | |
12841 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
12842 | } |
12843 | \f | |
c906108c SS |
12844 | /* Reset the thread number of this breakpoint: |
12845 | ||
12846 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12847 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12848 | void |
fba45db2 | 12849 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12850 | { |
12851 | if (b->thread != -1) | |
12852 | { | |
00431a78 | 12853 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
12854 | |
12855 | /* We're being called after following a fork. The new fork is | |
12856 | selected as current, and unless this was a vfork will have a | |
12857 | different program space from the original thread. Reset that | |
12858 | as well. */ | |
12859 | b->loc->pspace = current_program_space; | |
c906108c SS |
12860 | } |
12861 | } | |
12862 | ||
03ac34d5 MS |
12863 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12864 | If from_tty is nonzero, it prints a message to that effect, | |
12865 | which ends with a period (no newline). */ | |
12866 | ||
c906108c | 12867 | void |
fba45db2 | 12868 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12869 | { |
c906108c SS |
12870 | if (count < 0) |
12871 | count = 0; | |
12872 | ||
43892fdf | 12873 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12874 | if (b->number == bptnum) |
01add95b SM |
12875 | { |
12876 | if (is_tracepoint (b)) | |
12877 | { | |
12878 | if (from_tty && count != 0) | |
6cb06a8c TT |
12879 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
12880 | bptnum); | |
01add95b SM |
12881 | return; |
12882 | } | |
12883 | ||
12884 | b->ignore_count = count; | |
12885 | if (from_tty) | |
12886 | { | |
12887 | if (count == 0) | |
6cb06a8c TT |
12888 | gdb_printf (_("Will stop next time " |
12889 | "breakpoint %d is reached."), | |
12890 | bptnum); | |
01add95b | 12891 | else if (count == 1) |
6cb06a8c TT |
12892 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
12893 | bptnum); | |
01add95b | 12894 | else |
6cb06a8c TT |
12895 | gdb_printf (_("Will ignore next %d " |
12896 | "crossings of breakpoint %d."), | |
12897 | count, bptnum); | |
01add95b SM |
12898 | } |
12899 | gdb::observers::breakpoint_modified.notify (b); | |
12900 | return; | |
12901 | } | |
c906108c | 12902 | |
8a3fe4f8 | 12903 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
12904 | } |
12905 | ||
c906108c SS |
12906 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
12907 | ||
12908 | static void | |
0b39b52e | 12909 | ignore_command (const char *args, int from_tty) |
c906108c | 12910 | { |
0b39b52e | 12911 | const char *p = args; |
52f0bd74 | 12912 | int num; |
c906108c SS |
12913 | |
12914 | if (p == 0) | |
e2e0b3e5 | 12915 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 12916 | |
c906108c | 12917 | num = get_number (&p); |
5c44784c | 12918 | if (num == 0) |
8a3fe4f8 | 12919 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 12920 | if (*p == 0) |
8a3fe4f8 | 12921 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
12922 | |
12923 | set_ignore_count (num, | |
12924 | longest_to_int (value_as_long (parse_and_eval (p))), | |
12925 | from_tty); | |
221ea385 | 12926 | if (from_tty) |
6cb06a8c | 12927 | gdb_printf ("\n"); |
c906108c SS |
12928 | } |
12929 | \f | |
d0fe4701 XR |
12930 | |
12931 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
12932 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
12933 | |
12934 | static void | |
d0fe4701 XR |
12935 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
12936 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 12937 | { |
d0fe4701 XR |
12938 | if (bp_num_range.first == 0) |
12939 | { | |
12940 | warning (_("bad breakpoint number at or near '%d'"), | |
12941 | bp_num_range.first); | |
12942 | } | |
12943 | else | |
c906108c | 12944 | { |
d0fe4701 | 12945 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 12946 | { |
d0fe4701 XR |
12947 | bool match = false; |
12948 | ||
1428b37a | 12949 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 12950 | if (b->number == i) |
5c44784c | 12951 | { |
bfd28288 | 12952 | match = true; |
48649e1b | 12953 | function (b); |
11cf8741 | 12954 | break; |
5c44784c | 12955 | } |
bfd28288 | 12956 | if (!match) |
6cb06a8c | 12957 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 12958 | } |
c906108c SS |
12959 | } |
12960 | } | |
12961 | ||
d0fe4701 XR |
12962 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
12963 | ARGS. */ | |
12964 | ||
12965 | static void | |
12966 | map_breakpoint_numbers (const char *args, | |
12967 | gdb::function_view<void (breakpoint *)> function) | |
12968 | { | |
12969 | if (args == NULL || *args == '\0') | |
12970 | error_no_arg (_("one or more breakpoint numbers")); | |
12971 | ||
12972 | number_or_range_parser parser (args); | |
12973 | ||
12974 | while (!parser.finished ()) | |
12975 | { | |
12976 | int num = parser.get_number (); | |
12977 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
12978 | } | |
12979 | } | |
12980 | ||
12981 | /* Return the breakpoint location structure corresponding to the | |
12982 | BP_NUM and LOC_NUM values. */ | |
12983 | ||
0d381245 | 12984 | static struct bp_location * |
d0fe4701 | 12985 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 12986 | { |
43892fdf | 12987 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
12988 | |
12989 | if (!b || b->number != bp_num) | |
d0fe4701 | 12990 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 12991 | |
0d381245 | 12992 | if (loc_num == 0) |
d0fe4701 | 12993 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 12994 | |
d0fe4701 | 12995 | int n = 0; |
40cb8ca5 | 12996 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
12997 | if (++n == loc_num) |
12998 | return loc; | |
12999 | ||
13000 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13001 | } |
13002 | ||
95e95a6d PA |
13003 | /* Modes of operation for extract_bp_num. */ |
13004 | enum class extract_bp_kind | |
13005 | { | |
13006 | /* Extracting a breakpoint number. */ | |
13007 | bp, | |
13008 | ||
13009 | /* Extracting a location number. */ | |
13010 | loc, | |
13011 | }; | |
13012 | ||
13013 | /* Extract a breakpoint or location number (as determined by KIND) | |
13014 | from the string starting at START. TRAILER is a character which | |
13015 | can be found after the number. If you don't want a trailer, use | |
13016 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13017 | string. This always returns a positive integer. */ | |
13018 | ||
13019 | static int | |
13020 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13021 | int trailer, const char **end_out = NULL) | |
13022 | { | |
13023 | const char *end = start; | |
13024 | int num = get_number_trailer (&end, trailer); | |
13025 | if (num < 0) | |
13026 | error (kind == extract_bp_kind::bp | |
13027 | ? _("Negative breakpoint number '%.*s'") | |
13028 | : _("Negative breakpoint location number '%.*s'"), | |
13029 | int (end - start), start); | |
13030 | if (num == 0) | |
13031 | error (kind == extract_bp_kind::bp | |
13032 | ? _("Bad breakpoint number '%.*s'") | |
13033 | : _("Bad breakpoint location number '%.*s'"), | |
13034 | int (end - start), start); | |
13035 | ||
13036 | if (end_out != NULL) | |
13037 | *end_out = end; | |
13038 | return num; | |
13039 | } | |
13040 | ||
13041 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13042 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13043 | representing the (inclusive) range. The returned pair's elements | |
13044 | are always positive integers. */ | |
13045 | ||
13046 | static std::pair<int, int> | |
13047 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13048 | const std::string &arg, | |
13049 | std::string::size_type arg_offset) | |
13050 | { | |
13051 | std::pair<int, int> range; | |
13052 | const char *bp_loc = &arg[arg_offset]; | |
13053 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13054 | if (dash != std::string::npos) | |
13055 | { | |
13056 | /* bp_loc is a range (x-z). */ | |
13057 | if (arg.length () == dash + 1) | |
13058 | error (kind == extract_bp_kind::bp | |
13059 | ? _("Bad breakpoint number at or near: '%s'") | |
13060 | : _("Bad breakpoint location number at or near: '%s'"), | |
13061 | bp_loc); | |
13062 | ||
13063 | const char *end; | |
13064 | const char *start_first = bp_loc; | |
13065 | const char *start_second = &arg[dash + 1]; | |
13066 | range.first = extract_bp_num (kind, start_first, '-'); | |
13067 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13068 | ||
13069 | if (range.first > range.second) | |
13070 | error (kind == extract_bp_kind::bp | |
13071 | ? _("Inverted breakpoint range at '%.*s'") | |
13072 | : _("Inverted breakpoint location range at '%.*s'"), | |
13073 | int (end - start_first), start_first); | |
13074 | } | |
13075 | else | |
13076 | { | |
13077 | /* bp_loc is a single value. */ | |
13078 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13079 | range.second = range.first; | |
13080 | } | |
13081 | return range; | |
13082 | } | |
13083 | ||
d0fe4701 XR |
13084 | /* Extract the breakpoint/location range specified by ARG. Returns |
13085 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13086 | BP_LOC_RANGE. | |
13087 | ||
13088 | ARG may be in any of the following forms: | |
13089 | ||
13090 | x where 'x' is a breakpoint number. | |
13091 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13092 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13093 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13094 | location number range. | |
13095 | */ | |
13096 | ||
cc638e86 | 13097 | static void |
d0fe4701 XR |
13098 | extract_bp_number_and_location (const std::string &arg, |
13099 | std::pair<int, int> &bp_num_range, | |
13100 | std::pair<int, int> &bp_loc_range) | |
13101 | { | |
13102 | std::string::size_type dot = arg.find ('.'); | |
13103 | ||
13104 | if (dot != std::string::npos) | |
13105 | { | |
13106 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13107 | ||
13108 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13109 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13110 | |
95e95a6d PA |
13111 | bp_num_range.first |
13112 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13113 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13114 | |
95e95a6d PA |
13115 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13116 | arg, dot + 1); | |
d0fe4701 XR |
13117 | } |
13118 | else | |
13119 | { | |
13120 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13121 | |
95e95a6d | 13122 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13123 | bp_loc_range.first = 0; |
13124 | bp_loc_range.second = 0; | |
13125 | } | |
d0fe4701 XR |
13126 | } |
13127 | ||
13128 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13129 | specifies whether to enable or disable. */ | |
13130 | ||
13131 | static void | |
13132 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13133 | { | |
13134 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13135 | if (loc != NULL) | |
13136 | { | |
b5fa468f TBA |
13137 | if (loc->disabled_by_cond && enable) |
13138 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13139 | "cannot enable."), bp_num, loc_num); | |
13140 | ||
d0fe4701 XR |
13141 | if (loc->enabled != enable) |
13142 | { | |
13143 | loc->enabled = enable; | |
13144 | mark_breakpoint_location_modified (loc); | |
13145 | } | |
13146 | if (target_supports_enable_disable_tracepoint () | |
13147 | && current_trace_status ()->running && loc->owner | |
13148 | && is_tracepoint (loc->owner)) | |
13149 | target_disable_tracepoint (loc); | |
13150 | } | |
13151 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13152 | |
e5213e2c SF |
13153 | gdb::observers::breakpoint_modified.notify (loc->owner); |
13154 | } | |
13155 | ||
13156 | /* Calculates LOC_NUM for LOC by traversing the bp_location chain of LOC's | |
13157 | owner. 1-based indexing. -1 signals NOT FOUND. */ | |
13158 | ||
13159 | static int | |
13160 | find_loc_num_by_location (bp_location *loc) | |
13161 | { | |
13162 | if (loc != nullptr && loc->owner != nullptr) | |
13163 | { | |
13164 | /* Locations use 1-based indexing. */ | |
13165 | int loc_num = 1; | |
13166 | for (bp_location *it : loc->owner->locations ()) | |
13167 | { | |
13168 | if (it == loc) | |
13169 | return loc_num; | |
13170 | loc_num++; | |
13171 | } | |
13172 | } | |
13173 | return -1; | |
13174 | } | |
13175 | ||
13176 | /* Enable or disable a breakpoint location LOC. ENABLE | |
13177 | specifies whether to enable or disable. */ | |
13178 | ||
13179 | void | |
13180 | enable_disable_bp_location (bp_location *loc, bool enable) | |
13181 | { | |
13182 | if (loc == nullptr) | |
13183 | error (_("Breakpoint location is invalid.")); | |
13184 | ||
13185 | if (loc->owner == nullptr) | |
13186 | error (_("Breakpoint location does not have an owner breakpoint.")); | |
13187 | ||
13188 | if (loc->disabled_by_cond && enable) | |
13189 | { | |
13190 | int loc_num = find_loc_num_by_location (loc); | |
13191 | if (loc_num == -1) | |
13192 | error (_("Breakpoint location LOC_NUM could not be found.")); | |
13193 | else | |
13194 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13195 | "cannot enable."), loc->owner->number, loc_num); | |
13196 | } | |
13197 | ||
13198 | if (loc->enabled != enable) | |
13199 | { | |
13200 | loc->enabled = enable; | |
13201 | mark_breakpoint_location_modified (loc); | |
13202 | } | |
13203 | ||
13204 | if (target_supports_enable_disable_tracepoint () | |
13205 | && current_trace_status ()->running && loc->owner | |
13206 | && is_tracepoint (loc->owner)) | |
13207 | target_disable_tracepoint (loc); | |
13208 | ||
13209 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d | 13210 | gdb::observers::breakpoint_modified.notify (loc->owner); |
d0fe4701 XR |
13211 | } |
13212 | ||
13213 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13214 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13215 | (inclusive) range of location numbers of that breakpoint to | |
13216 | enable/disable. ENABLE specifies whether to enable or disable the | |
13217 | location. */ | |
13218 | ||
13219 | static void | |
13220 | enable_disable_breakpoint_location_range (int bp_num, | |
13221 | std::pair<int, int> &bp_loc_range, | |
13222 | bool enable) | |
13223 | { | |
13224 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13225 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13226 | } | |
0d381245 | 13227 | |
1900040c MS |
13228 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13229 | If from_tty is nonzero, it prints a message to that effect, | |
13230 | which ends with a period (no newline). */ | |
13231 | ||
c906108c | 13232 | void |
fba45db2 | 13233 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13234 | { |
13235 | /* Never disable a watchpoint scope breakpoint; we want to | |
13236 | hit them when we leave scope so we can delete both the | |
13237 | watchpoint and its scope breakpoint at that time. */ | |
13238 | if (bpt->type == bp_watchpoint_scope) | |
13239 | return; | |
13240 | ||
b5de0fa7 | 13241 | bpt->enable_state = bp_disabled; |
c906108c | 13242 | |
b775012e LM |
13243 | /* Mark breakpoint locations modified. */ |
13244 | mark_breakpoint_modified (bpt); | |
13245 | ||
d248b706 KY |
13246 | if (target_supports_enable_disable_tracepoint () |
13247 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13248 | { | |
40cb8ca5 | 13249 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13250 | target_disable_tracepoint (location); |
13251 | } | |
13252 | ||
44702360 | 13253 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13254 | |
76727919 | 13255 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13256 | } |
13257 | ||
d0fe4701 XR |
13258 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13259 | specified in ARGS. ARGS may be in any of the formats handled by | |
13260 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13261 | or disable the breakpoints/locations. */ | |
13262 | ||
c906108c | 13263 | static void |
d0fe4701 | 13264 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13265 | { |
c906108c | 13266 | if (args == 0) |
46c6471b | 13267 | { |
43892fdf | 13268 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13269 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13270 | { |
13271 | if (enable) | |
13272 | enable_breakpoint (bpt); | |
13273 | else | |
13274 | disable_breakpoint (bpt); | |
13275 | } | |
46c6471b | 13276 | } |
9eaabc75 | 13277 | else |
0d381245 | 13278 | { |
cb791d59 | 13279 | std::string num = extract_arg (&args); |
9eaabc75 | 13280 | |
cb791d59 | 13281 | while (!num.empty ()) |
d248b706 | 13282 | { |
d0fe4701 | 13283 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13284 | |
cc638e86 PA |
13285 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13286 | ||
13287 | if (bp_loc_range.first == bp_loc_range.second | |
13288 | && bp_loc_range.first == 0) | |
d0fe4701 | 13289 | { |
cc638e86 PA |
13290 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
13291 | map_breakpoint_number_range (bp_num_range, | |
13292 | enable | |
13293 | ? enable_breakpoint | |
13294 | : disable_breakpoint); | |
13295 | } | |
13296 | else | |
13297 | { | |
13298 | /* Handle breakpoint ids with formats 'x.y' or | |
13299 | 'x.y-z'. */ | |
13300 | enable_disable_breakpoint_location_range | |
13301 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13302 | } |
9eaabc75 | 13303 | num = extract_arg (&args); |
d248b706 | 13304 | } |
0d381245 | 13305 | } |
c906108c SS |
13306 | } |
13307 | ||
d0fe4701 XR |
13308 | /* The disable command disables the specified breakpoints/locations |
13309 | (or all defined breakpoints) so they're no longer effective in | |
13310 | stopping the inferior. ARGS may be in any of the forms defined in | |
13311 | extract_bp_number_and_location. */ | |
13312 | ||
13313 | static void | |
13314 | disable_command (const char *args, int from_tty) | |
13315 | { | |
13316 | enable_disable_command (args, from_tty, false); | |
13317 | } | |
13318 | ||
c906108c | 13319 | static void |
816338b5 SS |
13320 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13321 | int count) | |
c906108c | 13322 | { |
afe38095 | 13323 | int target_resources_ok; |
c906108c SS |
13324 | |
13325 | if (bpt->type == bp_hardware_breakpoint) | |
13326 | { | |
13327 | int i; | |
c5aa993b | 13328 | i = hw_breakpoint_used_count (); |
53a5351d | 13329 | target_resources_ok = |
d92524f1 | 13330 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13331 | i + 1, 0); |
c906108c | 13332 | if (target_resources_ok == 0) |
8a3fe4f8 | 13333 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13334 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13335 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13336 | } |
13337 | ||
cc60f2e3 | 13338 | if (is_watchpoint (bpt)) |
c906108c | 13339 | { |
d07205c2 | 13340 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13341 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13342 | |
a70b8144 | 13343 | try |
c906108c | 13344 | { |
3a5c3e22 PA |
13345 | struct watchpoint *w = (struct watchpoint *) bpt; |
13346 | ||
1e718ff1 TJB |
13347 | orig_enable_state = bpt->enable_state; |
13348 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 13349 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 13350 | } |
230d2906 | 13351 | catch (const gdb_exception &e) |
c5aa993b | 13352 | { |
1e718ff1 | 13353 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13354 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13355 | bpt->number); | |
13356 | return; | |
c5aa993b | 13357 | } |
c906108c | 13358 | } |
0101ce28 | 13359 | |
b775012e LM |
13360 | bpt->enable_state = bp_enabled; |
13361 | ||
13362 | /* Mark breakpoint locations modified. */ | |
13363 | mark_breakpoint_modified (bpt); | |
13364 | ||
d248b706 KY |
13365 | if (target_supports_enable_disable_tracepoint () |
13366 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13367 | { | |
40cb8ca5 | 13368 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13369 | target_enable_tracepoint (location); |
13370 | } | |
13371 | ||
b4c291bb | 13372 | bpt->disposition = disposition; |
816338b5 | 13373 | bpt->enable_count = count; |
44702360 | 13374 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13375 | |
76727919 | 13376 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13377 | } |
13378 | ||
fe3f5fa8 | 13379 | |
c906108c | 13380 | void |
fba45db2 | 13381 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13382 | { |
816338b5 | 13383 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13384 | } |
13385 | ||
d0fe4701 XR |
13386 | /* The enable command enables the specified breakpoints/locations (or |
13387 | all defined breakpoints) so they once again become (or continue to | |
13388 | be) effective in stopping the inferior. ARGS may be in any of the | |
13389 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13390 | |
c906108c | 13391 | static void |
981a3fb3 | 13392 | enable_command (const char *args, int from_tty) |
c906108c | 13393 | { |
d0fe4701 | 13394 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13395 | } |
13396 | ||
c906108c | 13397 | static void |
4495129a | 13398 | enable_once_command (const char *args, int from_tty) |
c906108c | 13399 | { |
48649e1b TT |
13400 | map_breakpoint_numbers |
13401 | (args, [&] (breakpoint *b) | |
13402 | { | |
13403 | iterate_over_related_breakpoints | |
13404 | (b, [&] (breakpoint *bpt) | |
13405 | { | |
13406 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13407 | }); | |
13408 | }); | |
816338b5 SS |
13409 | } |
13410 | ||
13411 | static void | |
4495129a | 13412 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13413 | { |
b9d61307 SM |
13414 | int count; |
13415 | ||
13416 | if (args == NULL) | |
13417 | error_no_arg (_("hit count")); | |
13418 | ||
13419 | count = get_number (&args); | |
816338b5 | 13420 | |
48649e1b TT |
13421 | map_breakpoint_numbers |
13422 | (args, [&] (breakpoint *b) | |
13423 | { | |
13424 | iterate_over_related_breakpoints | |
13425 | (b, [&] (breakpoint *bpt) | |
13426 | { | |
13427 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13428 | }); | |
13429 | }); | |
c906108c SS |
13430 | } |
13431 | ||
c906108c | 13432 | static void |
4495129a | 13433 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13434 | { |
48649e1b TT |
13435 | map_breakpoint_numbers |
13436 | (args, [&] (breakpoint *b) | |
13437 | { | |
13438 | iterate_over_related_breakpoints | |
13439 | (b, [&] (breakpoint *bpt) | |
13440 | { | |
13441 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13442 | }); | |
13443 | }); | |
c906108c SS |
13444 | } |
13445 | \f | |
1f3b5d1b PP |
13446 | /* Invalidate last known value of any hardware watchpoint if |
13447 | the memory which that value represents has been written to by | |
13448 | GDB itself. */ | |
13449 | ||
13450 | static void | |
8de0566d YQ |
13451 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13452 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13453 | const bfd_byte *data) |
13454 | { | |
43892fdf | 13455 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13456 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13457 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13458 | { |
3a5c3e22 | 13459 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13460 | |
850645cf | 13461 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13462 | { |
40cb8ca5 | 13463 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13464 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13465 | && loc->address + loc->length > addr | |
13466 | && addr + len > loc->address) | |
13467 | { | |
3a5c3e22 | 13468 | wp->val = NULL; |
4c1d86d9 | 13469 | wp->val_valid = false; |
3a5c3e22 PA |
13470 | } |
13471 | } | |
1f3b5d1b PP |
13472 | } |
13473 | } | |
13474 | ||
8181d85f DJ |
13475 | /* Create and insert a breakpoint for software single step. */ |
13476 | ||
13477 | void | |
6c95b8df | 13478 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13479 | const address_space *aspace, |
4a64f543 | 13480 | CORE_ADDR next_pc) |
8181d85f | 13481 | { |
7c16b83e PA |
13482 | struct thread_info *tp = inferior_thread (); |
13483 | struct symtab_and_line sal; | |
13484 | CORE_ADDR pc = next_pc; | |
8181d85f | 13485 | |
34b7e8a6 PA |
13486 | if (tp->control.single_step_breakpoints == NULL) |
13487 | { | |
960bc2bd | 13488 | std::unique_ptr<breakpoint> b |
7ab97995 PA |
13489 | (new momentary_breakpoint (gdbarch, bp_single_step, |
13490 | current_program_space, | |
13491 | null_frame_id, | |
13492 | tp->global_num)); | |
960bc2bd | 13493 | |
34b7e8a6 | 13494 | tp->control.single_step_breakpoints |
960bc2bd | 13495 | = add_to_breakpoint_chain (std::move (b)); |
34b7e8a6 | 13496 | } |
8181d85f | 13497 | |
7c16b83e PA |
13498 | sal = find_pc_line (pc, 0); |
13499 | sal.pc = pc; | |
13500 | sal.section = find_pc_overlay (pc); | |
13501 | sal.explicit_pc = 1; | |
960bc2bd PA |
13502 | |
13503 | auto *ss_bp | |
13504 | = static_cast<momentary_breakpoint *> (tp->control.single_step_breakpoints); | |
13505 | ss_bp->add_location (sal); | |
8181d85f | 13506 | |
7c16b83e | 13507 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13508 | } |
13509 | ||
93f9a11f YQ |
13510 | /* Insert single step breakpoints according to the current state. */ |
13511 | ||
13512 | int | |
13513 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13514 | { | |
f5ea389a | 13515 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13516 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13517 | |
f5ea389a | 13518 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13519 | |
a0ff9e1a | 13520 | if (!next_pcs.empty ()) |
93f9a11f | 13521 | { |
f5ea389a | 13522 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 13523 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13524 | |
a0ff9e1a | 13525 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13526 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13527 | ||
93f9a11f YQ |
13528 | return 1; |
13529 | } | |
13530 | else | |
13531 | return 0; | |
13532 | } | |
13533 | ||
34b7e8a6 | 13534 | /* See breakpoint.h. */ |
f02253f1 HZ |
13535 | |
13536 | int | |
7c16b83e | 13537 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13538 | const address_space *aspace, |
7c16b83e | 13539 | CORE_ADDR pc) |
1aafd4da | 13540 | { |
40cb8ca5 | 13541 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13542 | if (loc->inserted |
13543 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13544 | return 1; | |
1aafd4da | 13545 | |
7c16b83e | 13546 | return 0; |
ef370185 JB |
13547 | } |
13548 | ||
13549 | /* Check whether a software single-step breakpoint is inserted at | |
13550 | PC. */ | |
13551 | ||
13552 | int | |
accd0bcd | 13553 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13554 | CORE_ADDR pc) |
13555 | { | |
43892fdf | 13556 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13557 | { |
13558 | if (bpt->type == bp_single_step | |
13559 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13560 | return 1; | |
13561 | } | |
13562 | return 0; | |
1aafd4da UW |
13563 | } |
13564 | ||
1042e4c0 SS |
13565 | /* Tracepoint-specific operations. */ |
13566 | ||
13567 | /* Set tracepoint count to NUM. */ | |
13568 | static void | |
13569 | set_tracepoint_count (int num) | |
13570 | { | |
13571 | tracepoint_count = num; | |
4fa62494 | 13572 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13573 | } |
13574 | ||
70221824 | 13575 | static void |
0b39b52e | 13576 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13577 | { |
264f9890 PA |
13578 | location_spec_up locspec = string_to_location_spec (&arg, |
13579 | current_language); | |
13580 | const struct breakpoint_ops *ops = breakpoint_ops_for_location_spec | |
13581 | (locspec.get (), true /* is_tracepoint */); | |
55aa24fb | 13582 | |
558a9d82 | 13583 | create_breakpoint (get_current_arch (), |
264f9890 | 13584 | locspec.get (), |
10a636cc | 13585 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13586 | 0 /* tempflag */, |
13587 | bp_tracepoint /* type_wanted */, | |
13588 | 0 /* Ignore count */, | |
13589 | pending_break_support, | |
13590 | ops, | |
13591 | from_tty, | |
13592 | 1 /* enabled */, | |
13593 | 0 /* internal */, 0); | |
1042e4c0 SS |
13594 | } |
13595 | ||
70221824 | 13596 | static void |
0b39b52e | 13597 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13598 | { |
264f9890 PA |
13599 | location_spec_up locspec = string_to_location_spec (&arg, |
13600 | current_language); | |
558a9d82 | 13601 | create_breakpoint (get_current_arch (), |
264f9890 | 13602 | locspec.get (), |
10a636cc | 13603 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13604 | 0 /* tempflag */, |
13605 | bp_fast_tracepoint /* type_wanted */, | |
13606 | 0 /* Ignore count */, | |
13607 | pending_break_support, | |
74421c0b | 13608 | &code_breakpoint_ops, |
558a9d82 YQ |
13609 | from_tty, |
13610 | 1 /* enabled */, | |
13611 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13612 | } |
13613 | ||
13614 | /* strace command implementation. Creates a static tracepoint. */ | |
13615 | ||
70221824 | 13616 | static void |
0b39b52e | 13617 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13618 | { |
a678887d | 13619 | const struct breakpoint_ops *ops; |
264f9890 | 13620 | location_spec_up locspec; |
7b572efb | 13621 | enum bptype type; |
983af33b SDJ |
13622 | |
13623 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13624 | or with a normal static tracepoint. */ | |
61012eef | 13625 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13626 | { |
13627 | ops = &strace_marker_breakpoint_ops; | |
264f9890 PA |
13628 | locspec = new_linespec_location_spec (&arg, |
13629 | symbol_name_match_type::FULL); | |
7b572efb | 13630 | type = bp_static_marker_tracepoint; |
f00aae0f | 13631 | } |
983af33b | 13632 | else |
f00aae0f | 13633 | { |
74421c0b | 13634 | ops = &code_breakpoint_ops; |
264f9890 | 13635 | locspec = string_to_location_spec (&arg, current_language); |
7b572efb | 13636 | type = bp_static_tracepoint; |
f00aae0f | 13637 | } |
983af33b | 13638 | |
558a9d82 | 13639 | create_breakpoint (get_current_arch (), |
264f9890 | 13640 | locspec.get (), |
10a636cc | 13641 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 | 13642 | 0 /* tempflag */, |
7b572efb | 13643 | type /* type_wanted */, |
558a9d82 YQ |
13644 | 0 /* Ignore count */, |
13645 | pending_break_support, | |
13646 | ops, | |
13647 | from_tty, | |
13648 | 1 /* enabled */, | |
13649 | 0 /* internal */, 0); | |
7a697b8d SS |
13650 | } |
13651 | ||
409873ef SS |
13652 | /* Set up a fake reader function that gets command lines from a linked |
13653 | list that was acquired during tracepoint uploading. */ | |
13654 | ||
13655 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13656 | static int next_cmd; |
409873ef SS |
13657 | |
13658 | static char * | |
13659 | read_uploaded_action (void) | |
13660 | { | |
a18ba4e4 | 13661 | char *rslt = nullptr; |
409873ef | 13662 | |
a18ba4e4 SM |
13663 | if (next_cmd < this_utp->cmd_strings.size ()) |
13664 | { | |
67aa1f3c | 13665 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13666 | next_cmd++; |
13667 | } | |
409873ef SS |
13668 | |
13669 | return rslt; | |
13670 | } | |
13671 | ||
00bf0b85 SS |
13672 | /* Given information about a tracepoint as recorded on a target (which |
13673 | can be either a live system or a trace file), attempt to create an | |
13674 | equivalent GDB tracepoint. This is not a reliable process, since | |
13675 | the target does not necessarily have all the information used when | |
13676 | the tracepoint was originally defined. */ | |
13677 | ||
d9b3f62e | 13678 | struct tracepoint * |
00bf0b85 | 13679 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13680 | { |
f2fc3015 TT |
13681 | const char *addr_str; |
13682 | char small_buf[100]; | |
d9b3f62e | 13683 | struct tracepoint *tp; |
fd9b8c24 | 13684 | |
409873ef | 13685 | if (utp->at_string) |
67aa1f3c | 13686 | addr_str = utp->at_string.get (); |
409873ef SS |
13687 | else |
13688 | { | |
13689 | /* In the absence of a source location, fall back to raw | |
13690 | address. Since there is no way to confirm that the address | |
13691 | means the same thing as when the trace was started, warn the | |
13692 | user. */ | |
3e43a32a MS |
13693 | warning (_("Uploaded tracepoint %d has no " |
13694 | "source location, using raw address"), | |
409873ef | 13695 | utp->number); |
8c042590 | 13696 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13697 | addr_str = small_buf; |
13698 | } | |
13699 | ||
13700 | /* There's not much we can do with a sequence of bytecodes. */ | |
13701 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13702 | warning (_("Uploaded tracepoint %d condition " |
13703 | "has no source form, ignoring it"), | |
409873ef | 13704 | utp->number); |
d5551862 | 13705 | |
264f9890 PA |
13706 | location_spec_up locspec = string_to_location_spec (&addr_str, |
13707 | current_language); | |
8cdf0e15 | 13708 | if (!create_breakpoint (get_current_arch (), |
264f9890 | 13709 | locspec.get (), |
67aa1f3c | 13710 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13711 | false /* force_condition */, |
e7e0cddf | 13712 | 0 /* parse cond/thread */, |
8cdf0e15 | 13713 | 0 /* tempflag */, |
0fb4aa4b | 13714 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13715 | 0 /* Ignore count */, |
13716 | pending_break_support, | |
74421c0b | 13717 | &code_breakpoint_ops, |
8cdf0e15 | 13718 | 0 /* from_tty */, |
84f4c1fe | 13719 | utp->enabled /* enabled */, |
44f238bb PA |
13720 | 0 /* internal */, |
13721 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13722 | return NULL; |
fd9b8c24 | 13723 | |
409873ef | 13724 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13725 | tp = get_tracepoint (tracepoint_count); |
13726 | gdb_assert (tp != NULL); | |
d5551862 | 13727 | |
00bf0b85 SS |
13728 | if (utp->pass > 0) |
13729 | { | |
8c042590 | 13730 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13731 | tp->number); |
00bf0b85 | 13732 | |
409873ef | 13733 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13734 | } |
13735 | ||
409873ef SS |
13736 | /* If we have uploaded versions of the original commands, set up a |
13737 | special-purpose "reader" function and call the usual command line | |
13738 | reader, then pass the result to the breakpoint command-setting | |
13739 | function. */ | |
a18ba4e4 | 13740 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13741 | { |
12973681 | 13742 | counted_command_line cmd_list; |
00bf0b85 | 13743 | |
409873ef | 13744 | this_utp = utp; |
3149d8c1 | 13745 | next_cmd = 0; |
d5551862 | 13746 | |
60b3cef2 | 13747 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13748 | |
c1fc2657 | 13749 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13750 | } |
a18ba4e4 SM |
13751 | else if (!utp->actions.empty () |
13752 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
13753 | warning (_("Uploaded tracepoint %d actions " |
13754 | "have no source form, ignoring them"), | |
409873ef | 13755 | utp->number); |
00bf0b85 | 13756 | |
f196051f | 13757 | /* Copy any status information that might be available. */ |
c1fc2657 | 13758 | tp->hit_count = utp->hit_count; |
f196051f SS |
13759 | tp->traceframe_usage = utp->traceframe_usage; |
13760 | ||
00bf0b85 | 13761 | return tp; |
d9b3f62e | 13762 | } |
00bf0b85 | 13763 | |
1042e4c0 SS |
13764 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13765 | omitted. */ | |
13766 | ||
13767 | static void | |
1d12d88f | 13768 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 13769 | { |
79a45e25 | 13770 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13771 | int num_printed; |
1042e4c0 | 13772 | |
5c458ae8 | 13773 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
13774 | |
13775 | if (num_printed == 0) | |
1042e4c0 | 13776 | { |
e5a67952 | 13777 | if (args == NULL || *args == '\0') |
112e8700 | 13778 | uiout->message ("No tracepoints.\n"); |
d77f58be | 13779 | else |
112e8700 | 13780 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13781 | } |
ad443146 SS |
13782 | |
13783 | default_collect_info (); | |
1042e4c0 SS |
13784 | } |
13785 | ||
4a64f543 | 13786 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13787 | Not supported by all targets. */ |
13788 | static void | |
5fed81ff | 13789 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13790 | { |
13791 | enable_command (args, from_tty); | |
13792 | } | |
13793 | ||
4a64f543 | 13794 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13795 | Not supported by all targets. */ |
13796 | static void | |
5fed81ff | 13797 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13798 | { |
13799 | disable_command (args, from_tty); | |
13800 | } | |
13801 | ||
4a64f543 | 13802 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 13803 | static void |
4495129a | 13804 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 13805 | { |
1042e4c0 SS |
13806 | dont_repeat (); |
13807 | ||
13808 | if (arg == 0) | |
13809 | { | |
13810 | int breaks_to_delete = 0; | |
13811 | ||
13812 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
13813 | Do not delete internal or call-dummy breakpoints, these |
13814 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 13815 | argument. */ |
f6d17b2b | 13816 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 13817 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
13818 | { |
13819 | breaks_to_delete = 1; | |
13820 | break; | |
13821 | } | |
1042e4c0 SS |
13822 | |
13823 | /* Ask user only if there are some breakpoints to delete. */ | |
13824 | if (!from_tty | |
13825 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13826 | { | |
1428b37a | 13827 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 13828 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 13829 | delete_breakpoint (b); |
1042e4c0 SS |
13830 | } |
13831 | } | |
13832 | else | |
48649e1b | 13833 | map_breakpoint_numbers |
b926417a | 13834 | (arg, [&] (breakpoint *br) |
48649e1b | 13835 | { |
b926417a | 13836 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13837 | }); |
1042e4c0 SS |
13838 | } |
13839 | ||
197f0a60 TT |
13840 | /* Helper function for trace_pass_command. */ |
13841 | ||
13842 | static void | |
d9b3f62e | 13843 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 13844 | { |
d9b3f62e | 13845 | tp->pass_count = count; |
76727919 | 13846 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 13847 | if (from_tty) |
6cb06a8c TT |
13848 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
13849 | tp->number, count); | |
197f0a60 TT |
13850 | } |
13851 | ||
1042e4c0 SS |
13852 | /* Set passcount for tracepoint. |
13853 | ||
13854 | First command argument is passcount, second is tracepoint number. | |
13855 | If tracepoint number omitted, apply to most recently defined. | |
13856 | Also accepts special argument "all". */ | |
13857 | ||
13858 | static void | |
0b39b52e | 13859 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 13860 | { |
d9b3f62e | 13861 | struct tracepoint *t1; |
0b39b52e | 13862 | ULONGEST count; |
1042e4c0 SS |
13863 | |
13864 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13865 | error (_("passcount command requires an " |
13866 | "argument (count + optional TP num)")); | |
1042e4c0 | 13867 | |
0b39b52e | 13868 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 13869 | |
529480d0 | 13870 | args = skip_spaces (args); |
1042e4c0 SS |
13871 | if (*args && strncasecmp (args, "all", 3) == 0) |
13872 | { | |
13873 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
13874 | if (*args) |
13875 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13876 | |
f6d17b2b | 13877 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
13878 | { |
13879 | t1 = (struct tracepoint *) b; | |
13880 | trace_pass_set_count (t1, count, from_tty); | |
13881 | } | |
197f0a60 TT |
13882 | } |
13883 | else if (*args == '\0') | |
1042e4c0 | 13884 | { |
5fa1d40e | 13885 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 13886 | if (t1) |
197f0a60 TT |
13887 | trace_pass_set_count (t1, count, from_tty); |
13888 | } | |
13889 | else | |
13890 | { | |
bfd28288 PA |
13891 | number_or_range_parser parser (args); |
13892 | while (!parser.finished ()) | |
1042e4c0 | 13893 | { |
bfd28288 | 13894 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
13895 | if (t1) |
13896 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13897 | } |
13898 | } | |
1042e4c0 SS |
13899 | } |
13900 | ||
d9b3f62e | 13901 | struct tracepoint * |
1042e4c0 SS |
13902 | get_tracepoint (int num) |
13903 | { | |
f6d17b2b | 13904 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 13905 | if (t->number == num) |
d9b3f62e | 13906 | return (struct tracepoint *) t; |
1042e4c0 SS |
13907 | |
13908 | return NULL; | |
13909 | } | |
13910 | ||
d5551862 SS |
13911 | /* Find the tracepoint with the given target-side number (which may be |
13912 | different from the tracepoint number after disconnecting and | |
13913 | reconnecting). */ | |
13914 | ||
d9b3f62e | 13915 | struct tracepoint * |
d5551862 SS |
13916 | get_tracepoint_by_number_on_target (int num) |
13917 | { | |
f6d17b2b | 13918 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
13919 | { |
13920 | struct tracepoint *t = (struct tracepoint *) b; | |
13921 | ||
13922 | if (t->number_on_target == num) | |
13923 | return t; | |
13924 | } | |
d5551862 SS |
13925 | |
13926 | return NULL; | |
13927 | } | |
13928 | ||
1042e4c0 | 13929 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 13930 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
13931 | If the argument is missing, the most recent tracepoint |
13932 | (tracepoint_count) is returned. */ | |
13933 | ||
d9b3f62e | 13934 | struct tracepoint * |
0b39b52e | 13935 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 13936 | number_or_range_parser *parser) |
1042e4c0 | 13937 | { |
1042e4c0 | 13938 | int tpnum; |
0b39b52e | 13939 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 13940 | |
bfd28288 | 13941 | if (parser != NULL) |
197f0a60 | 13942 | { |
bfd28288 PA |
13943 | gdb_assert (!parser->finished ()); |
13944 | tpnum = parser->get_number (); | |
197f0a60 TT |
13945 | } |
13946 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 13947 | tpnum = tracepoint_count; |
1042e4c0 | 13948 | else |
197f0a60 | 13949 | tpnum = get_number (arg); |
1042e4c0 SS |
13950 | |
13951 | if (tpnum <= 0) | |
13952 | { | |
13953 | if (instring && *instring) | |
6cb06a8c TT |
13954 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
13955 | instring); | |
1042e4c0 | 13956 | else |
6cb06a8c | 13957 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
13958 | return NULL; |
13959 | } | |
13960 | ||
f6d17b2b | 13961 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 13962 | if (t->number == tpnum) |
d9b3f62e | 13963 | return (struct tracepoint *) t; |
1042e4c0 | 13964 | |
6cb06a8c | 13965 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
13966 | return NULL; |
13967 | } | |
13968 | ||
d9b3f62e | 13969 | void |
04d0163c | 13970 | breakpoint::print_recreate_thread (struct ui_file *fp) const |
d9b3f62e | 13971 | { |
04d0163c TT |
13972 | if (thread != -1) |
13973 | gdb_printf (fp, " thread %d", thread); | |
d9b3f62e | 13974 | |
04d0163c TT |
13975 | if (task != 0) |
13976 | gdb_printf (fp, " task %d", task); | |
d9b3f62e | 13977 | |
6cb06a8c | 13978 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
13979 | } |
13980 | ||
6149aea9 PA |
13981 | /* Save information on user settable breakpoints (watchpoints, etc) to |
13982 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
13983 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 13984 | true. */ |
6149aea9 | 13985 | |
1042e4c0 | 13986 | static void |
4495129a | 13987 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 13988 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 13989 | { |
6149aea9 | 13990 | int any = 0; |
6149aea9 | 13991 | int extra_trace_bits = 0; |
1042e4c0 | 13992 | |
6149aea9 PA |
13993 | if (filename == 0 || *filename == 0) |
13994 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
13995 | |
13996 | /* See if we have anything to save. */ | |
43892fdf | 13997 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
13998 | { |
13999 | /* Skip internal and momentary breakpoints. */ | |
14000 | if (!user_breakpoint_p (tp)) | |
14001 | continue; | |
6149aea9 | 14002 | |
01add95b SM |
14003 | /* If we have a filter, only save the breakpoints it accepts. */ |
14004 | if (filter && !filter (tp)) | |
14005 | continue; | |
6149aea9 | 14006 | |
01add95b | 14007 | any = 1; |
6149aea9 | 14008 | |
01add95b SM |
14009 | if (is_tracepoint (tp)) |
14010 | { | |
14011 | extra_trace_bits = 1; | |
6149aea9 | 14012 | |
01add95b SM |
14013 | /* We can stop searching. */ |
14014 | break; | |
14015 | } | |
14016 | } | |
6149aea9 PA |
14017 | |
14018 | if (!any) | |
1042e4c0 | 14019 | { |
6149aea9 | 14020 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14021 | return; |
14022 | } | |
14023 | ||
ee0c3293 | 14024 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14025 | |
14026 | stdio_file fp; | |
14027 | ||
ee0c3293 | 14028 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14029 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14030 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14031 | |
6149aea9 | 14032 | if (extra_trace_bits) |
d7e74731 | 14033 | save_trace_state_variables (&fp); |
8bf6485c | 14034 | |
43892fdf | 14035 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14036 | { |
14037 | /* Skip internal and momentary breakpoints. */ | |
14038 | if (!user_breakpoint_p (tp)) | |
14039 | continue; | |
8bf6485c | 14040 | |
01add95b SM |
14041 | /* If we have a filter, only save the breakpoints it accepts. */ |
14042 | if (filter && !filter (tp)) | |
14043 | continue; | |
6149aea9 | 14044 | |
c47614fe | 14045 | tp->print_recreate (&fp); |
1042e4c0 | 14046 | |
01add95b SM |
14047 | /* Note, we can't rely on tp->number for anything, as we can't |
14048 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14049 | instead. */ | |
6149aea9 | 14050 | |
01add95b | 14051 | if (tp->cond_string) |
6f781ee3 | 14052 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 14053 | |
01add95b SM |
14054 | if (tp->ignore_count) |
14055 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 14056 | |
01add95b SM |
14057 | if (tp->type != bp_dprintf && tp->commands) |
14058 | { | |
14059 | fp.puts (" commands\n"); | |
1042e4c0 | 14060 | |
992aeed8 TT |
14061 | ui_out_redirect_pop redir (current_uiout, &fp); |
14062 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
6149aea9 | 14063 | |
01add95b SM |
14064 | fp.puts (" end\n"); |
14065 | } | |
6149aea9 | 14066 | |
01add95b SM |
14067 | if (tp->enable_state == bp_disabled) |
14068 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 14069 | |
01add95b SM |
14070 | /* If this is a multi-location breakpoint, check if the locations |
14071 | should be individually disabled. Watchpoint locations are | |
14072 | special, and not user visible. */ | |
14073 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14074 | { | |
14075 | int n = 1; | |
40cb8ca5 | 14076 | |
01add95b SM |
14077 | for (bp_location *loc : tp->locations ()) |
14078 | { | |
14079 | if (!loc->enabled) | |
14080 | fp.printf ("disable $bpnum.%d\n", n); | |
14081 | ||
14082 | n++; | |
14083 | } | |
14084 | } | |
14085 | } | |
8bf6485c | 14086 | |
e0700ba4 SM |
14087 | if (extra_trace_bits && !default_collect.empty ()) |
14088 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14089 | |
1042e4c0 | 14090 | if (from_tty) |
6cb06a8c | 14091 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14092 | } |
14093 | ||
14094 | /* The `save breakpoints' command. */ | |
14095 | ||
14096 | static void | |
4495129a | 14097 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14098 | { |
14099 | save_breakpoints (args, from_tty, NULL); | |
14100 | } | |
14101 | ||
14102 | /* The `save tracepoints' command. */ | |
14103 | ||
14104 | static void | |
4495129a | 14105 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14106 | { |
14107 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14108 | } |
14109 | ||
c906108c | 14110 | \f |
629500fa KS |
14111 | /* This help string is used to consolidate all the help string for specifying |
14112 | locations used by several commands. */ | |
14113 | ||
264f9890 | 14114 | #define LOCATION_SPEC_HELP_STRING \ |
629500fa KS |
14115 | "Linespecs are colon-separated lists of location parameters, such as\n\ |
14116 | source filename, function name, label name, and line number.\n\ | |
14117 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14118 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14119 | \"factorial.c:fact:the_top\".\n\ | |
14120 | \n\ | |
14121 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14122 | program. Example: To specify the fourth byte past the start function\n\ | |
14123 | \"main\", use \"*main + 4\".\n\ | |
14124 | \n\ | |
14125 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14126 | syntax to specify location parameters.\n\ | |
14127 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14128 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14129 | -function fact -label the_top\".\n\ |
14130 | \n\ | |
14131 | By default, a specified function is matched against the program's\n\ | |
14132 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14133 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14134 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14135 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14136 | specified name as a complete fully-qualified name instead." |
629500fa | 14137 | |
4a64f543 MS |
14138 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14139 | commands. It is defined as a macro to prevent duplication. | |
14140 | COMMAND should be a string constant containing the name of the | |
14141 | command. */ | |
629500fa | 14142 | |
31e2b00f | 14143 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14144 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14145 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14146 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14147 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14148 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14149 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14150 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14151 | below.\n\ | |
14152 | \n\ | |
dc10affe PA |
14153 | With no LOCATION, uses current execution address of the selected\n\ |
14154 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14155 | \n\ |
14156 | THREADNUM is the number from \"info threads\".\n\ | |
14157 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14158 | \n\ |
14159 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14160 | it is invalid for all current locations.\n\ | |
264f9890 | 14161 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14162 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14163 | conditions are different.\n\ | |
31e2b00f AS |
14164 | \n\ |
14165 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14166 | ||
44feb3ce TT |
14167 | /* List of subcommands for "catch". */ |
14168 | static struct cmd_list_element *catch_cmdlist; | |
14169 | ||
14170 | /* List of subcommands for "tcatch". */ | |
14171 | static struct cmd_list_element *tcatch_cmdlist; | |
14172 | ||
9ac4176b | 14173 | void |
a121b7c1 | 14174 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14175 | cmd_func_ftype *func, |
625e8578 | 14176 | completer_ftype *completer, |
44feb3ce TT |
14177 | void *user_data_catch, |
14178 | void *user_data_tcatch) | |
14179 | { | |
14180 | struct cmd_list_element *command; | |
14181 | ||
0450cc4c | 14182 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14183 | &catch_cmdlist); |
5538b03c | 14184 | command->func = func; |
0f8e2034 | 14185 | command->set_context (user_data_catch); |
a96d9b2e | 14186 | set_cmd_completer (command, completer); |
44feb3ce | 14187 | |
0450cc4c | 14188 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14189 | &tcatch_cmdlist); |
5538b03c | 14190 | command->func = func; |
0f8e2034 | 14191 | command->set_context (user_data_tcatch); |
a96d9b2e | 14192 | set_cmd_completer (command, completer); |
44feb3ce TT |
14193 | } |
14194 | ||
0574c78f GB |
14195 | /* Zero if any of the breakpoint's locations could be a location where |
14196 | functions have been inlined, nonzero otherwise. */ | |
14197 | ||
14198 | static int | |
14199 | is_non_inline_function (struct breakpoint *b) | |
14200 | { | |
14201 | /* The shared library event breakpoint is set on the address of a | |
14202 | non-inline function. */ | |
14203 | if (b->type == bp_shlib_event) | |
14204 | return 1; | |
14205 | ||
14206 | return 0; | |
14207 | } | |
14208 | ||
14209 | /* Nonzero if the specified PC cannot be a location where functions | |
14210 | have been inlined. */ | |
14211 | ||
14212 | int | |
accd0bcd | 14213 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14214 | const target_waitstatus &ws) |
0574c78f | 14215 | { |
43892fdf | 14216 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14217 | { |
14218 | if (!is_non_inline_function (b)) | |
14219 | continue; | |
14220 | ||
40cb8ca5 | 14221 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14222 | { |
14223 | if (!bl->shlib_disabled | |
09ac7c10 | 14224 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14225 | return 1; |
14226 | } | |
14227 | } | |
14228 | ||
14229 | return 0; | |
14230 | } | |
14231 | ||
2f202fde JK |
14232 | /* Remove any references to OBJFILE which is going to be freed. */ |
14233 | ||
14234 | void | |
14235 | breakpoint_free_objfile (struct objfile *objfile) | |
14236 | { | |
48d7020b | 14237 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14238 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14239 | loc->symtab = NULL; |
14240 | } | |
14241 | ||
8bfd80db YQ |
14242 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14243 | ||
14244 | static struct cmd_list_element *enablebreaklist = NULL; | |
14245 | ||
8588b356 SM |
14246 | /* See breakpoint.h. */ |
14247 | ||
14248 | cmd_list_element *commands_cmd_element = nullptr; | |
14249 | ||
6c265988 | 14250 | void _initialize_breakpoint (); |
c906108c | 14251 | void |
6c265988 | 14252 | _initialize_breakpoint () |
c906108c SS |
14253 | { |
14254 | struct cmd_list_element *c; | |
14255 | ||
c90e7d63 SM |
14256 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14257 | "breakpoint"); | |
14258 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14259 | "breakpoint"); | |
14260 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14261 | "breakpoint"); | |
84acb35a | 14262 | |
c906108c SS |
14263 | breakpoint_chain = 0; |
14264 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14265 | before a breakpoint is set. */ | |
14266 | breakpoint_count = 0; | |
14267 | ||
1042e4c0 SS |
14268 | tracepoint_count = 0; |
14269 | ||
1bedd215 AC |
14270 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14271 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14272 | Usage is `ignore N COUNT'.")); | |
c906108c | 14273 | |
8588b356 SM |
14274 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14275 | commands_command, _("\ | |
18da0c51 MG |
14276 | Set commands to be executed when the given breakpoints are hit.\n\ |
14277 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14278 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14279 | (e.g. `5-7').\n\ | |
c906108c SS |
14280 | With no argument, the targeted breakpoint is the last one set.\n\ |
14281 | The commands themselves follow starting on the next line.\n\ | |
14282 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14283 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14284 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14285 | |
b1d4d8d1 TBA |
14286 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14287 | static std::string condition_command_help | |
14288 | = gdb::option::build_help (_("\ | |
1bedd215 | 14289 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14290 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14291 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14292 | \n\ |
14293 | Options:\n\ | |
14294 | %OPTIONS%"), cc_opts); | |
14295 | ||
14296 | c = add_com ("condition", class_breakpoint, condition_command, | |
14297 | condition_command_help.c_str ()); | |
14298 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14299 | |
1bedd215 | 14300 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14301 | Set a temporary breakpoint.\n\ |
c906108c SS |
14302 | Like \"break\" except the breakpoint is only temporary,\n\ |
14303 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14304 | by using \"enable delete\" on the breakpoint number.\n\ |
14305 | \n" | |
14306 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14307 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14308 | |
1bedd215 | 14309 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14310 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14311 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14312 | some target hardware may not have this support.\n\ |
14313 | \n" | |
14314 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14315 | set_cmd_completer (c, location_completer); |
c906108c | 14316 | |
1bedd215 | 14317 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14318 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14319 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14320 | so it will be deleted when hit.\n\ |
14321 | \n" | |
14322 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14323 | set_cmd_completer (c, location_completer); |
c906108c | 14324 | |
3947f654 SM |
14325 | cmd_list_element *enable_cmd |
14326 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14327 | Enable all or some breakpoints.\n\ |
14328 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14329 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14330 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14331 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14332 | With a subcommand you can enable temporarily."), |
3947f654 | 14333 | &enablelist, 1, &cmdlist); |
c906108c | 14334 | |
3947f654 | 14335 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14336 | |
84951ab5 | 14337 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14338 | Enable all or some breakpoints.\n\ |
14339 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14340 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14341 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14342 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14343 | &enablebreaklist, 1, &enablelist); |
c906108c | 14344 | |
1a966eab | 14345 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14346 | Enable some breakpoints for one hit.\n\ |
14347 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14348 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14349 | &enablebreaklist); |
14350 | ||
1a966eab | 14351 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14352 | Enable some breakpoints and delete when hit.\n\ |
14353 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14354 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14355 | &enablebreaklist); |
14356 | ||
816338b5 | 14357 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14358 | Enable some breakpoints for COUNT hits.\n\ |
14359 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14360 | If a breakpoint is hit while enabled in this fashion,\n\ |
14361 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14362 | &enablebreaklist); | |
14363 | ||
1a966eab | 14364 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14365 | Enable some breakpoints and delete when hit.\n\ |
14366 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14367 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14368 | &enablelist); |
14369 | ||
1a966eab | 14370 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14371 | Enable some breakpoints for one hit.\n\ |
14372 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14373 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14374 | &enablelist); |
14375 | ||
14376 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14377 | Enable some breakpoints for COUNT hits.\n\ |
14378 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14379 | If a breakpoint is hit while enabled in this fashion,\n\ |
14380 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14381 | &enablelist); |
14382 | ||
3947f654 SM |
14383 | cmd_list_element *disable_cmd |
14384 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14385 | Disable all or some breakpoints.\n\ |
14386 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14387 | Arguments are breakpoint numbers with spaces in between.\n\ |
14388 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14389 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14390 | &disablelist, 1, &cmdlist); |
14391 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14392 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14393 | |
57b4f16e | 14394 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14395 | Disable all or some breakpoints.\n\ |
14396 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14397 | Arguments are breakpoint numbers with spaces in between.\n\ |
14398 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14399 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14400 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14401 | &disablelist); |
14402 | ||
3947f654 SM |
14403 | cmd_list_element *delete_cmd |
14404 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14405 | Delete all or some breakpoints.\n\ |
14406 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14407 | Arguments are breakpoint numbers with spaces in between.\n\ |
14408 | To delete all breakpoints, give no argument.\n\ | |
14409 | \n\ | |
590042fc | 14410 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14411 | &deletelist, 1, &cmdlist); |
14412 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14413 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14414 | |
57b4f16e | 14415 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14416 | Delete all or some breakpoints or auto-display expressions.\n\ |
14417 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14418 | Arguments are breakpoint numbers with spaces in between.\n\ |
14419 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14420 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14421 | &deletelist); |
14422 | ||
3947f654 SM |
14423 | cmd_list_element *clear_cmd |
14424 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14425 | Clear breakpoint at specified location.\n\ |
14426 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14427 | \n\ |
14428 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14429 | is executing in.\n" |
264f9890 | 14430 | "\n" LOCATION_SPEC_HELP_STRING "\n\n\ |
1bedd215 | 14431 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14432 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14433 | |
3947f654 SM |
14434 | cmd_list_element *break_cmd |
14435 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14436 | Set breakpoint at specified location.\n" |
31e2b00f | 14437 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14438 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14439 | |
3947f654 SM |
14440 | add_com_alias ("b", break_cmd, class_run, 1); |
14441 | add_com_alias ("br", break_cmd, class_run, 1); | |
14442 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14443 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14444 | |
e0f25bd9 SM |
14445 | cmd_list_element *info_breakpoints_cmd |
14446 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14447 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14448 | The \"Type\" column indicates one of:\n\ |
14449 | \tbreakpoint - normal breakpoint\n\ | |
14450 | \twatchpoint - watchpoint\n\ | |
14451 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14452 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14453 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14454 | address and file/line number respectively.\n\ |
14455 | \n\ | |
14456 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14457 | are set to the address of the last breakpoint listed unless the command\n\ |
14458 | is prefixed with \"server \".\n\n\ | |
c906108c | 14459 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14460 | breakpoint set.")); |
c906108c | 14461 | |
e0f25bd9 | 14462 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14463 | |
1a966eab AC |
14464 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14465 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14466 | The \"Type\" column indicates one of:\n\ |
14467 | \tbreakpoint - normal breakpoint\n\ | |
14468 | \twatchpoint - watchpoint\n\ | |
14469 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14470 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14471 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14472 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14473 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14474 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14475 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14476 | address and file/line number respectively.\n\ |
14477 | \n\ | |
14478 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14479 | are set to the address of the last breakpoint listed unless the command\n\ |
14480 | is prefixed with \"server \".\n\n\ | |
c906108c | 14481 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14482 | breakpoint set."), |
c906108c SS |
14483 | &maintenanceinfolist); |
14484 | ||
3b6acaee | 14485 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14486 | Set catchpoints to catch events."), |
2f822da5 | 14487 | &catch_cmdlist, |
3b6acaee | 14488 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14489 | |
3b6acaee | 14490 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14491 | Set temporary catchpoints to catch events."), |
2f822da5 | 14492 | &tcatch_cmdlist, |
3b6acaee | 14493 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14494 | |
a15a5258 AB |
14495 | const auto opts = make_watch_options_def_group (nullptr); |
14496 | ||
14497 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14498 | Set a watchpoint for EXPRESSION.\n\ | |
14499 | Usage: watch [-location] EXPRESSION\n\ | |
14500 | \n\ | |
14501 | Options:\n\ | |
14502 | %OPTIONS%\n\ | |
14503 | \n\ | |
c906108c | 14504 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14505 | an expression changes."), opts); |
14506 | c = add_com ("watch", class_breakpoint, watch_command, | |
14507 | watch_help.c_str ()); | |
14508 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14509 | ||
14510 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14511 | Set a read watchpoint for EXPRESSION.\n\ | |
14512 | Usage: rwatch [-location] EXPRESSION\n\ | |
14513 | \n\ | |
14514 | Options:\n\ | |
14515 | %OPTIONS%\n\ | |
14516 | \n\ | |
14517 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14518 | an expression is read."), opts); | |
14519 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14520 | rwatch_help.c_str ()); | |
14521 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14522 | ||
14523 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14524 | Set an access watchpoint for EXPRESSION.\n\ | |
14525 | Usage: awatch [-location] EXPRESSION\n\ | |
14526 | \n\ | |
14527 | Options:\n\ | |
14528 | %OPTIONS%\n\ | |
14529 | \n\ | |
14530 | An access watchpoint stops execution of your program whenever the value\n\ | |
14531 | of an expression is either read or written."), opts); | |
14532 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14533 | awatch_help.c_str ()); | |
14534 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14535 | |
11db9430 | 14536 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14537 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14538 | |
920d2a44 AC |
14539 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14540 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14541 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14542 | &can_use_hw_watchpoints, _("\ | |
14543 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14544 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14545 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14546 | such is available. (However, any hardware watchpoints that were\n\ | |
14547 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14548 | hardware.)"), |
14549 | NULL, | |
920d2a44 | 14550 | show_can_use_hw_watchpoints, |
85c07804 | 14551 | &setlist, &showlist); |
c906108c SS |
14552 | |
14553 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14554 | |
1042e4c0 SS |
14555 | /* Tracepoint manipulation commands. */ |
14556 | ||
3947f654 SM |
14557 | cmd_list_element *trace_cmd |
14558 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14559 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14560 | \n" |
14561 | BREAK_ARGS_HELP ("trace") "\n\ | |
14562 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14563 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14564 | |
3947f654 SM |
14565 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14566 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14567 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14568 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14569 | |
7a697b8d | 14570 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14571 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14572 | \n" |
14573 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14574 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14575 | set_cmd_completer (c, location_completer); | |
14576 | ||
0fb4aa4b | 14577 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14578 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14579 | \n\ |
14580 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14581 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14582 | or -m MARKER_ID.\n\n\ | |
14583 | If a marker id is specified, probe the marker with that name. With\n\ | |
14584 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14585 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14586 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14587 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14588 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14589 | \n\ | |
14590 | CONDITION is a boolean expression.\n\ | |
264f9890 | 14591 | \n" LOCATION_SPEC_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14592 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14593 | conditions are different.\n\ | |
0fb4aa4b PA |
14594 | \n\ |
14595 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14596 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14597 | set_cmd_completer (c, location_completer); | |
14598 | ||
e0f25bd9 SM |
14599 | cmd_list_element *info_tracepoints_cmd |
14600 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14601 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14602 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14603 | last tracepoint set.")); | |
14604 | ||
e0f25bd9 | 14605 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14606 | |
5e84b7ee SM |
14607 | cmd_list_element *delete_tracepoints_cmd |
14608 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14609 | Delete specified tracepoints.\n\ |
14610 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14611 | No argument means delete all tracepoints."), | |
14612 | &deletelist); | |
5e84b7ee | 14613 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14614 | |
14615 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14616 | Disable specified tracepoints.\n\ | |
14617 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14618 | No argument means disable all tracepoints."), | |
14619 | &disablelist); | |
14620 | deprecate_cmd (c, "disable"); | |
14621 | ||
14622 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14623 | Enable specified tracepoints.\n\ | |
14624 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14625 | No argument means enable all tracepoints."), | |
14626 | &enablelist); | |
14627 | deprecate_cmd (c, "enable"); | |
14628 | ||
14629 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14630 | Set the passcount for a tracepoint.\n\ | |
14631 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14632 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14633 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14634 | ||
0743fc83 TT |
14635 | add_basic_prefix_cmd ("save", class_breakpoint, |
14636 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 14637 | &save_cmdlist, |
0743fc83 | 14638 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
14639 | |
14640 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14641 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14642 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14643 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14644 | session to restore them."), | |
14645 | &save_cmdlist); | |
14646 | set_cmd_completer (c, filename_completer); | |
14647 | ||
3947f654 SM |
14648 | cmd_list_element *save_tracepoints_cmd |
14649 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14650 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14651 | Use the 'source' command in another debug session to restore them."), |
14652 | &save_cmdlist); | |
3947f654 | 14653 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 14654 | |
3947f654 | 14655 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
14656 | deprecate_cmd (c, "save tracepoints"); |
14657 | ||
f54bdb6d SM |
14658 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
14659 | _("\ | |
590042fc | 14660 | Breakpoint specific settings.\n\ |
fa8d40ab | 14661 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14662 | pending breakpoint behavior."), |
f54bdb6d | 14663 | _("\ |
590042fc | 14664 | Breakpoint specific settings.\n\ |
fa8d40ab | 14665 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14666 | pending breakpoint behavior."), |
f54bdb6d SM |
14667 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
14668 | &setlist, &showlist); | |
fa8d40ab | 14669 | |
7915a72c AC |
14670 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14671 | &pending_break_support, _("\ | |
14672 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14673 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14674 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14675 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14676 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14677 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14678 | NULL, |
920d2a44 | 14679 | show_pending_break_support, |
6e1d7d6c AC |
14680 | &breakpoint_set_cmdlist, |
14681 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14682 | |
14683 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14684 | |
14685 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14686 | &automatic_hardware_breakpoints, _("\ | |
14687 | Set automatic usage of hardware breakpoints."), _("\ | |
14688 | Show automatic usage of hardware breakpoints."), _("\ | |
14689 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14690 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14691 | a warning will be emitted for such breakpoints."), | |
14692 | NULL, | |
14693 | show_automatic_hardware_breakpoints, | |
14694 | &breakpoint_set_cmdlist, | |
14695 | &breakpoint_show_cmdlist); | |
74960c60 | 14696 | |
a25a5a45 PA |
14697 | add_setshow_boolean_cmd ("always-inserted", class_support, |
14698 | &always_inserted_mode, _("\ | |
74960c60 VP |
14699 | Set mode for inserting breakpoints."), _("\ |
14700 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
14701 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
14702 | they're created, kept inserted even when execution stops, and removed\n\ | |
14703 | only when the user deletes them. When this mode is off (the default),\n\ | |
14704 | breakpoints are inserted only when execution continues, and removed\n\ | |
14705 | when execution stops."), | |
72d0e2c5 YQ |
14706 | NULL, |
14707 | &show_always_inserted_mode, | |
14708 | &breakpoint_set_cmdlist, | |
14709 | &breakpoint_show_cmdlist); | |
f1310107 | 14710 | |
b775012e LM |
14711 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
14712 | condition_evaluation_enums, | |
14713 | &condition_evaluation_mode_1, _("\ | |
14714 | Set mode of breakpoint condition evaluation."), _("\ | |
14715 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 14716 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
14717 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
14718 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
14719 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
14720 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
14721 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 14722 | be set to \"host\"."), |
b775012e LM |
14723 | &set_condition_evaluation_mode, |
14724 | &show_condition_evaluation_mode, | |
14725 | &breakpoint_set_cmdlist, | |
14726 | &breakpoint_show_cmdlist); | |
14727 | ||
f1310107 TJB |
14728 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
14729 | Set a breakpoint for an address range.\n\ | |
14730 | break-range START-LOCATION, END-LOCATION\n\ | |
14731 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14732 | LINENUM, for that line in the current file,\n\ | |
14733 | FILE:LINENUM, for that line in that file,\n\ | |
14734 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 14735 | or the start of the range\n\ |
f1310107 TJB |
14736 | FUNCTION, for the first line in that function,\n\ |
14737 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14738 | *ADDRESS, for the instruction at that address.\n\ | |
14739 | \n\ | |
14740 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14741 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14742 | range (including START-LOCATION and END-LOCATION).")); | |
14743 | ||
e7e0cddf | 14744 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 14745 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 14746 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa | 14747 | location may be a linespec, explicit, or address location.\n" |
264f9890 | 14748 | "\n" LOCATION_SPEC_HELP_STRING)); |
e7e0cddf SS |
14749 | set_cmd_completer (c, location_completer); |
14750 | ||
14751 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
14752 | dprintf_style_enums, &dprintf_style, _("\ | |
14753 | Set the style of usage for dynamic printf."), _("\ | |
14754 | Show the style of usage for dynamic printf."), _("\ | |
14755 | This setting chooses how GDB will do a dynamic printf.\n\ | |
14756 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
14757 | console, as with the \"printf\" command.\n\ | |
14758 | If the value is \"call\", the print is done by calling a function in your\n\ | |
14759 | program; by default printf(), but you can choose a different function or\n\ | |
14760 | output stream by setting dprintf-function and dprintf-channel."), | |
14761 | update_dprintf_commands, NULL, | |
14762 | &setlist, &showlist); | |
14763 | ||
e7e0cddf SS |
14764 | add_setshow_string_cmd ("dprintf-function", class_support, |
14765 | &dprintf_function, _("\ | |
590042fc PW |
14766 | Set the function to use for dynamic printf."), _("\ |
14767 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14768 | update_dprintf_commands, NULL, |
14769 | &setlist, &showlist); | |
14770 | ||
e7e0cddf SS |
14771 | add_setshow_string_cmd ("dprintf-channel", class_support, |
14772 | &dprintf_channel, _("\ | |
590042fc PW |
14773 | Set the channel to use for dynamic printf."), _("\ |
14774 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14775 | update_dprintf_commands, NULL, |
14776 | &setlist, &showlist); | |
14777 | ||
d3ce09f5 SS |
14778 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
14779 | &disconnected_dprintf, _("\ | |
14780 | Set whether dprintf continues after GDB disconnects."), _("\ | |
14781 | Show whether dprintf continues after GDB disconnects."), _("\ | |
14782 | Use this to let dprintf commands continue to hit and produce output\n\ | |
14783 | even if GDB disconnects or detaches from the target."), | |
14784 | NULL, | |
14785 | NULL, | |
14786 | &setlist, &showlist); | |
14787 | ||
14788 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
14789 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
14790 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
14791 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
14792 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 14793 | |
491144b5 | 14794 | automatic_hardware_breakpoints = true; |
f3b1572e | 14795 | |
c90e7d63 SM |
14796 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
14797 | "breakpoint"); | |
14798 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
14799 | "breakpoint"); | |
c906108c | 14800 | } |