Commit | Line | Data |
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c906108c | 1 | /* Data structures associated with breakpoints in GDB. |
32d0add0 | 2 | Copyright (C) 1992-2015 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #if !defined (BREAKPOINT_H) | |
20 | #define BREAKPOINT_H 1 | |
21 | ||
22 | #include "frame.h" | |
23 | #include "value.h" | |
d6e956e5 | 24 | #include "vec.h" |
b775012e | 25 | #include "ax.h" |
625e8578 | 26 | #include "command.h" |
de6f69ad | 27 | #include "break-common.h" |
729662a5 | 28 | #include "probe.h" |
c906108c | 29 | |
278cd55f | 30 | struct value; |
fe898f56 | 31 | struct block; |
4cb0213d | 32 | struct gdbpy_breakpoint_object; |
ed3ef339 | 33 | struct gdbscm_breakpoint_object; |
197f0a60 | 34 | struct get_number_or_range_state; |
619cebe8 | 35 | struct thread_info; |
28010a5d PA |
36 | struct bpstats; |
37 | struct bp_location; | |
983af33b SDJ |
38 | struct linespec_result; |
39 | struct linespec_sals; | |
f00aae0f | 40 | struct event_location; |
278cd55f | 41 | |
0e2de366 MS |
42 | /* This is the maximum number of bytes a breakpoint instruction can |
43 | take. Feel free to increase it. It's just used in a few places to | |
44 | size arrays that should be independent of the target | |
45 | architecture. */ | |
c906108c SS |
46 | |
47 | #define BREAKPOINT_MAX 16 | |
48 | \f | |
a96d9b2e SDJ |
49 | |
50 | /* Type of breakpoint. */ | |
c5aa993b JM |
51 | |
52 | enum bptype | |
53 | { | |
0e2de366 | 54 | bp_none = 0, /* Eventpoint has been deleted */ |
c5aa993b JM |
55 | bp_breakpoint, /* Normal breakpoint */ |
56 | bp_hardware_breakpoint, /* Hardware assisted breakpoint */ | |
7c16b83e | 57 | bp_single_step, /* Software single-step */ |
c5aa993b JM |
58 | bp_until, /* used by until command */ |
59 | bp_finish, /* used by finish command */ | |
60 | bp_watchpoint, /* Watchpoint */ | |
61 | bp_hardware_watchpoint, /* Hardware assisted watchpoint */ | |
62 | bp_read_watchpoint, /* read watchpoint, (hardware assisted) */ | |
63 | bp_access_watchpoint, /* access watchpoint, (hardware assisted) */ | |
64 | bp_longjmp, /* secret breakpoint to find longjmp() */ | |
65 | bp_longjmp_resume, /* secret breakpoint to escape longjmp() */ | |
66 | ||
e2e4d78b JK |
67 | /* Breakpoint placed to the same location(s) like bp_longjmp but used to |
68 | protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and | |
69 | one bp_call_dummy are chained together by related_breakpoint for each | |
70 | DUMMY_FRAME. */ | |
71 | bp_longjmp_call_dummy, | |
72 | ||
186c406b TT |
73 | /* An internal breakpoint that is installed on the unwinder's |
74 | debug hook. */ | |
75 | bp_exception, | |
76 | /* An internal breakpoint that is set at the point where an | |
77 | exception will land. */ | |
78 | bp_exception_resume, | |
79 | ||
0e2de366 | 80 | /* Used by wait_for_inferior for stepping over subroutine calls, |
2c03e5be | 81 | and for skipping prologues. */ |
c5aa993b JM |
82 | bp_step_resume, |
83 | ||
2c03e5be PA |
84 | /* Used by wait_for_inferior for stepping over signal |
85 | handlers. */ | |
86 | bp_hp_step_resume, | |
87 | ||
c5aa993b JM |
88 | /* Used to detect when a watchpoint expression has gone out of |
89 | scope. These breakpoints are usually not visible to the user. | |
90 | ||
91 | This breakpoint has some interesting properties: | |
c906108c SS |
92 | |
93 | 1) There's always a 1:1 mapping between watchpoints | |
94 | on local variables and watchpoint_scope breakpoints. | |
95 | ||
96 | 2) It automatically deletes itself and the watchpoint it's | |
97 | associated with when hit. | |
98 | ||
99 | 3) It can never be disabled. */ | |
c5aa993b JM |
100 | bp_watchpoint_scope, |
101 | ||
e2e4d78b JK |
102 | /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it |
103 | is chained with by related_breakpoint. */ | |
c5aa993b JM |
104 | bp_call_dummy, |
105 | ||
aa7d318d TT |
106 | /* A breakpoint set on std::terminate, that is used to catch |
107 | otherwise uncaught exceptions thrown during an inferior call. */ | |
108 | bp_std_terminate, | |
109 | ||
c5aa993b JM |
110 | /* Some dynamic linkers (HP, maybe Solaris) can arrange for special |
111 | code in the inferior to run when significant events occur in the | |
112 | dynamic linker (for example a library is loaded or unloaded). | |
113 | ||
114 | By placing a breakpoint in this magic code GDB will get control | |
115 | when these significant events occur. GDB can then re-examine | |
116 | the dynamic linker's data structures to discover any newly loaded | |
117 | dynamic libraries. */ | |
118 | bp_shlib_event, | |
119 | ||
c4093a6a JM |
120 | /* Some multi-threaded systems can arrange for a location in the |
121 | inferior to be executed when certain thread-related events occur | |
122 | (such as thread creation or thread death). | |
123 | ||
124 | By placing a breakpoint at one of these locations, GDB will get | |
125 | control when these events occur. GDB can then update its thread | |
126 | lists etc. */ | |
127 | ||
128 | bp_thread_event, | |
129 | ||
1900040c MS |
130 | /* On the same principal, an overlay manager can arrange to call a |
131 | magic location in the inferior whenever there is an interesting | |
132 | change in overlay status. GDB can update its overlay tables | |
133 | and fiddle with breakpoints in overlays when this breakpoint | |
134 | is hit. */ | |
135 | ||
136 | bp_overlay_event, | |
137 | ||
0fd8e87f UW |
138 | /* Master copies of longjmp breakpoints. These are always installed |
139 | as soon as an objfile containing longjmp is loaded, but they are | |
140 | always disabled. While necessary, temporary clones of bp_longjmp | |
141 | type will be created and enabled. */ | |
142 | ||
143 | bp_longjmp_master, | |
144 | ||
aa7d318d TT |
145 | /* Master copies of std::terminate breakpoints. */ |
146 | bp_std_terminate_master, | |
147 | ||
186c406b TT |
148 | /* Like bp_longjmp_master, but for exceptions. */ |
149 | bp_exception_master, | |
150 | ||
ce78b96d | 151 | bp_catchpoint, |
1042e4c0 SS |
152 | |
153 | bp_tracepoint, | |
7a697b8d | 154 | bp_fast_tracepoint, |
0fb4aa4b | 155 | bp_static_tracepoint, |
4efc6507 | 156 | |
e7e0cddf SS |
157 | /* A dynamic printf stops at the given location, does a formatted |
158 | print, then automatically continues. (Although this is sort of | |
159 | like a macro packaging up standard breakpoint functionality, | |
160 | GDB doesn't have a way to construct types of breakpoint from | |
161 | elements of behavior.) */ | |
162 | bp_dprintf, | |
163 | ||
4efc6507 DE |
164 | /* Event for JIT compiled code generation or deletion. */ |
165 | bp_jit_event, | |
0e30163f JK |
166 | |
167 | /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB | |
168 | inserts new bp_gnu_ifunc_resolver_return at the caller. | |
169 | bp_gnu_ifunc_resolver is still being kept here as a different thread | |
170 | may still hit it before bp_gnu_ifunc_resolver_return is hit by the | |
171 | original thread. */ | |
172 | bp_gnu_ifunc_resolver, | |
173 | ||
174 | /* On its hit GDB now know the resolved address of the target | |
175 | STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be | |
176 | deleted now and the breakpoint moved to the target function entry | |
177 | point. */ | |
178 | bp_gnu_ifunc_resolver_return, | |
c5aa993b | 179 | }; |
c906108c | 180 | |
0e2de366 | 181 | /* States of enablement of breakpoint. */ |
c906108c | 182 | |
b5de0fa7 | 183 | enum enable_state |
c5aa993b | 184 | { |
0e2de366 MS |
185 | bp_disabled, /* The eventpoint is inactive, and cannot |
186 | trigger. */ | |
187 | bp_enabled, /* The eventpoint is active, and can | |
188 | trigger. */ | |
189 | bp_call_disabled, /* The eventpoint has been disabled while a | |
190 | call into the inferior is "in flight", | |
191 | because some eventpoints interfere with | |
192 | the implementation of a call on some | |
193 | targets. The eventpoint will be | |
194 | automatically enabled and reset when the | |
195 | call "lands" (either completes, or stops | |
196 | at another eventpoint). */ | |
c5aa993b | 197 | }; |
c906108c SS |
198 | |
199 | ||
0e2de366 | 200 | /* Disposition of breakpoint. Ie: what to do after hitting it. */ |
c906108c | 201 | |
c5aa993b JM |
202 | enum bpdisp |
203 | { | |
b5de0fa7 | 204 | disp_del, /* Delete it */ |
0e2de366 MS |
205 | disp_del_at_next_stop, /* Delete at next stop, |
206 | whether hit or not */ | |
b5de0fa7 EZ |
207 | disp_disable, /* Disable it */ |
208 | disp_donttouch /* Leave it alone */ | |
c5aa993b | 209 | }; |
c906108c | 210 | |
b775012e LM |
211 | /* Status of breakpoint conditions used when synchronizing |
212 | conditions with the target. */ | |
213 | ||
214 | enum condition_status | |
215 | { | |
216 | condition_unchanged = 0, | |
217 | condition_modified, | |
218 | condition_updated | |
219 | }; | |
220 | ||
8181d85f DJ |
221 | /* Information used by targets to insert and remove breakpoints. */ |
222 | ||
223 | struct bp_target_info | |
224 | { | |
6c95b8df PA |
225 | /* Address space at which the breakpoint was placed. */ |
226 | struct address_space *placed_address_space; | |
227 | ||
0d5ed153 MR |
228 | /* Address at which the breakpoint was placed. This is normally |
229 | the same as REQUESTED_ADDRESS, except when adjustment happens in | |
230 | gdbarch_breakpoint_from_pc. The most common form of adjustment | |
231 | is stripping an alternate ISA marker from the PC which is used | |
232 | to determine the type of breakpoint to insert. */ | |
8181d85f DJ |
233 | CORE_ADDR placed_address; |
234 | ||
0d5ed153 MR |
235 | /* Address at which the breakpoint was requested. */ |
236 | CORE_ADDR reqstd_address; | |
237 | ||
f1310107 TJB |
238 | /* If this is a ranged breakpoint, then this field contains the |
239 | length of the range that will be watched for execution. */ | |
240 | int length; | |
241 | ||
8181d85f DJ |
242 | /* If the breakpoint lives in memory and reading that memory would |
243 | give back the breakpoint, instead of the original contents, then | |
244 | the original contents are cached here. Only SHADOW_LEN bytes of | |
245 | this buffer are valid, and only when the breakpoint is inserted. */ | |
246 | gdb_byte shadow_contents[BREAKPOINT_MAX]; | |
247 | ||
248 | /* The length of the data cached in SHADOW_CONTENTS. */ | |
249 | int shadow_len; | |
250 | ||
251 | /* The size of the placed breakpoint, according to | |
0e2de366 MS |
252 | gdbarch_breakpoint_from_pc, when the breakpoint was inserted. |
253 | This is generally the same as SHADOW_LEN, unless we did not need | |
8181d85f | 254 | to read from the target to implement the memory breakpoint |
0e2de366 MS |
255 | (e.g. if a remote stub handled the details). We may still need |
256 | the size to remove the breakpoint safely. */ | |
8181d85f | 257 | int placed_size; |
b775012e LM |
258 | |
259 | /* Vector of conditions the target should evaluate if it supports target-side | |
260 | breakpoint conditions. */ | |
261 | VEC(agent_expr_p) *conditions; | |
d3ce09f5 SS |
262 | |
263 | /* Vector of commands the target should evaluate if it supports | |
264 | target-side breakpoint commands. */ | |
265 | VEC(agent_expr_p) *tcommands; | |
266 | ||
267 | /* Flag that is true if the breakpoint should be left in place even | |
268 | when GDB is not connected. */ | |
269 | int persist; | |
8181d85f DJ |
270 | }; |
271 | ||
5cab636d DJ |
272 | /* GDB maintains two types of information about each breakpoint (or |
273 | watchpoint, or other related event). The first type corresponds | |
274 | to struct breakpoint; this is a relatively high-level structure | |
275 | which contains the source location(s), stopping conditions, user | |
276 | commands to execute when the breakpoint is hit, and so forth. | |
277 | ||
278 | The second type of information corresponds to struct bp_location. | |
279 | Each breakpoint has one or (eventually) more locations associated | |
280 | with it, which represent target-specific and machine-specific | |
281 | mechanisms for stopping the program. For instance, a watchpoint | |
282 | expression may require multiple hardware watchpoints in order to | |
283 | catch all changes in the value of the expression being watched. */ | |
284 | ||
285 | enum bp_loc_type | |
286 | { | |
287 | bp_loc_software_breakpoint, | |
288 | bp_loc_hardware_breakpoint, | |
289 | bp_loc_hardware_watchpoint, | |
290 | bp_loc_other /* Miscellaneous... */ | |
291 | }; | |
292 | ||
28010a5d PA |
293 | /* This structure is a collection of function pointers that, if |
294 | available, will be called instead of performing the default action | |
295 | for this bp_loc_type. */ | |
296 | ||
297 | struct bp_location_ops | |
298 | { | |
299 | /* Destructor. Releases everything from SELF (but not SELF | |
300 | itself). */ | |
301 | void (*dtor) (struct bp_location *self); | |
302 | }; | |
303 | ||
5cab636d DJ |
304 | struct bp_location |
305 | { | |
0d381245 VP |
306 | /* Chain pointer to the next breakpoint location for |
307 | the same parent breakpoint. */ | |
7cc221ef DJ |
308 | struct bp_location *next; |
309 | ||
28010a5d PA |
310 | /* Methods associated with this location. */ |
311 | const struct bp_location_ops *ops; | |
312 | ||
f431efe5 PA |
313 | /* The reference count. */ |
314 | int refc; | |
315 | ||
5cab636d DJ |
316 | /* Type of this breakpoint location. */ |
317 | enum bp_loc_type loc_type; | |
318 | ||
319 | /* Each breakpoint location must belong to exactly one higher-level | |
f431efe5 PA |
320 | breakpoint. This pointer is NULL iff this bp_location is no |
321 | longer attached to a breakpoint. For example, when a breakpoint | |
322 | is deleted, its locations may still be found in the | |
323 | moribund_locations list, or if we had stopped for it, in | |
324 | bpstats. */ | |
5cab636d DJ |
325 | struct breakpoint *owner; |
326 | ||
60e1c644 PA |
327 | /* Conditional. Break only if this expression's value is nonzero. |
328 | Unlike string form of condition, which is associated with | |
329 | breakpoint, this is associated with location, since if breakpoint | |
330 | has several locations, the evaluation of expression can be | |
331 | different for different locations. Only valid for real | |
332 | breakpoints; a watchpoint's conditional expression is stored in | |
333 | the owner breakpoint object. */ | |
511a6cd4 | 334 | struct expression *cond; |
0d381245 | 335 | |
b775012e LM |
336 | /* Conditional expression in agent expression |
337 | bytecode form. This is used for stub-side breakpoint | |
338 | condition evaluation. */ | |
339 | struct agent_expr *cond_bytecode; | |
340 | ||
341 | /* Signals that the condition has changed since the last time | |
342 | we updated the global location list. This means the condition | |
343 | needs to be sent to the target again. This is used together | |
344 | with target-side breakpoint conditions. | |
345 | ||
346 | condition_unchanged: It means there has been no condition changes. | |
347 | ||
348 | condition_modified: It means this location had its condition modified. | |
349 | ||
350 | condition_updated: It means we already marked all the locations that are | |
351 | duplicates of this location and thus we don't need to call | |
352 | force_breakpoint_reinsertion (...) for this location. */ | |
353 | ||
354 | enum condition_status condition_changed; | |
355 | ||
d3ce09f5 SS |
356 | struct agent_expr *cmd_bytecode; |
357 | ||
358 | /* Signals that breakpoint conditions and/or commands need to be | |
359 | re-synched with the target. This has no use other than | |
360 | target-side breakpoints. */ | |
b775012e LM |
361 | char needs_update; |
362 | ||
0d381245 VP |
363 | /* This location's address is in an unloaded solib, and so this |
364 | location should not be inserted. It will be automatically | |
365 | enabled when that solib is loaded. */ | |
366 | char shlib_disabled; | |
367 | ||
368 | /* Is this particular location enabled. */ | |
369 | char enabled; | |
511a6cd4 | 370 | |
5cab636d DJ |
371 | /* Nonzero if this breakpoint is now inserted. */ |
372 | char inserted; | |
373 | ||
1a853c52 PA |
374 | /* Nonzero if this is a permanent breakpoint. There is a breakpoint |
375 | instruction hard-wired into the target's code. Don't try to | |
376 | write another breakpoint instruction on top of it, or restore its | |
377 | value. Step over it using the architecture's | |
378 | gdbarch_skip_permanent_breakpoint method. */ | |
379 | char permanent; | |
380 | ||
5cab636d | 381 | /* Nonzero if this is not the first breakpoint in the list |
1e4d1764 YQ |
382 | for the given address. location of tracepoint can _never_ |
383 | be duplicated with other locations of tracepoints and other | |
384 | kinds of breakpoints, because two locations at the same | |
385 | address may have different actions, so both of these locations | |
386 | should be downloaded and so that `tfind N' always works. */ | |
5cab636d DJ |
387 | char duplicate; |
388 | ||
389 | /* If we someday support real thread-specific breakpoints, then | |
390 | the breakpoint location will need a thread identifier. */ | |
391 | ||
392 | /* Data for specific breakpoint types. These could be a union, but | |
393 | simplicity is more important than memory usage for breakpoints. */ | |
394 | ||
a6d9a66e UW |
395 | /* Architecture associated with this location's address. May be |
396 | different from the breakpoint architecture. */ | |
397 | struct gdbarch *gdbarch; | |
398 | ||
6c95b8df PA |
399 | /* The program space associated with this breakpoint location |
400 | address. Note that an address space may be represented in more | |
401 | than one program space (e.g. each uClinux program will be given | |
402 | its own program space, but there will only be one address space | |
403 | for all of them), but we must not insert more than one location | |
404 | at the same address in the same address space. */ | |
405 | struct program_space *pspace; | |
406 | ||
5cab636d DJ |
407 | /* Note that zero is a perfectly valid code address on some platforms |
408 | (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL | |
409 | is not a special value for this field. Valid for all types except | |
410 | bp_loc_other. */ | |
411 | CORE_ADDR address; | |
412 | ||
a3be7890 | 413 | /* For hardware watchpoints, the size of the memory region being |
f1310107 TJB |
414 | watched. For hardware ranged breakpoints, the size of the |
415 | breakpoint range. */ | |
a5606eee VP |
416 | int length; |
417 | ||
0e2de366 | 418 | /* Type of hardware watchpoint. */ |
a5606eee VP |
419 | enum target_hw_bp_type watchpoint_type; |
420 | ||
714835d5 | 421 | /* For any breakpoint type with an address, this is the section |
0e2de366 MS |
422 | associated with the address. Used primarily for overlay |
423 | debugging. */ | |
714835d5 | 424 | struct obj_section *section; |
cf3a9e5b | 425 | |
5cab636d DJ |
426 | /* Address at which breakpoint was requested, either by the user or |
427 | by GDB for internal breakpoints. This will usually be the same | |
428 | as ``address'' (above) except for cases in which | |
429 | ADJUST_BREAKPOINT_ADDRESS has computed a different address at | |
430 | which to place the breakpoint in order to comply with a | |
431 | processor's architectual constraints. */ | |
432 | CORE_ADDR requested_address; | |
8181d85f | 433 | |
6a3a010b MR |
434 | /* An additional address assigned with this location. This is currently |
435 | only used by STT_GNU_IFUNC resolver breakpoints to hold the address | |
436 | of the resolver function. */ | |
437 | CORE_ADDR related_address; | |
438 | ||
55aa24fb SDJ |
439 | /* If the location comes from a probe point, this is the probe associated |
440 | with it. */ | |
729662a5 | 441 | struct bound_probe probe; |
55aa24fb | 442 | |
0d381245 VP |
443 | char *function_name; |
444 | ||
8181d85f DJ |
445 | /* Details of the placed breakpoint, when inserted. */ |
446 | struct bp_target_info target_info; | |
447 | ||
448 | /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */ | |
449 | struct bp_target_info overlay_target_info; | |
20874c92 VP |
450 | |
451 | /* In a non-stop mode, it's possible that we delete a breakpoint, | |
452 | but as we do that, some still running thread hits that breakpoint. | |
453 | For that reason, we need to keep locations belonging to deleted | |
454 | breakpoints for a bit, so that don't report unexpected SIGTRAP. | |
455 | We can't keep such locations forever, so we use a heuristic -- | |
456 | after we process certain number of inferior events since | |
457 | breakpoint was deleted, we retire all locations of that breakpoint. | |
458 | This variable keeps a number of events still to go, when | |
459 | it becomes 0 this location is retired. */ | |
460 | int events_till_retirement; | |
f8eba3c6 | 461 | |
2f202fde JK |
462 | /* Line number which was used to place this location. |
463 | ||
464 | Breakpoint placed into a comment keeps it's user specified line number | |
465 | despite ADDRESS resolves into a different line number. */ | |
f8eba3c6 TT |
466 | |
467 | int line_number; | |
468 | ||
2f202fde JK |
469 | /* Symtab which was used to place this location. This is used |
470 | to find the corresponding source file name. */ | |
f8eba3c6 | 471 | |
2f202fde | 472 | struct symtab *symtab; |
5cab636d DJ |
473 | }; |
474 | ||
64166036 PA |
475 | /* The possible return values for print_bpstat, print_it_normal, |
476 | print_it_done, print_it_noop. */ | |
477 | enum print_stop_action | |
478 | { | |
479 | /* We printed nothing or we need to do some more analysis. */ | |
480 | PRINT_UNKNOWN = -1, | |
481 | ||
482 | /* We printed something, and we *do* desire that something to be | |
483 | followed by a location. */ | |
484 | PRINT_SRC_AND_LOC, | |
485 | ||
486 | /* We printed something, and we do *not* desire that something to be | |
487 | followed by a location. */ | |
488 | PRINT_SRC_ONLY, | |
489 | ||
490 | /* We already printed all we needed to print, don't print anything | |
491 | else. */ | |
492 | PRINT_NOTHING | |
493 | }; | |
494 | ||
3086aeae DJ |
495 | /* This structure is a collection of function pointers that, if available, |
496 | will be called instead of the performing the default action for this | |
497 | bptype. */ | |
498 | ||
77b06cd7 | 499 | struct breakpoint_ops |
3086aeae | 500 | { |
be5c67c1 PA |
501 | /* Destructor. Releases everything from SELF (but not SELF |
502 | itself). */ | |
503 | void (*dtor) (struct breakpoint *self); | |
504 | ||
28010a5d PA |
505 | /* Allocate a location for this breakpoint. */ |
506 | struct bp_location * (*allocate_location) (struct breakpoint *); | |
507 | ||
508 | /* Reevaluate a breakpoint. This is necessary after symbols change | |
509 | (e.g., an executable or DSO was loaded, or the inferior just | |
510 | started). */ | |
511 | void (*re_set) (struct breakpoint *self); | |
512 | ||
77b06cd7 | 513 | /* Insert the breakpoint or watchpoint or activate the catchpoint. |
348d480f PA |
514 | Return 0 for success, 1 if the breakpoint, watchpoint or |
515 | catchpoint type is not supported, -1 for failure. */ | |
77b06cd7 | 516 | int (*insert_location) (struct bp_location *); |
ce78b96d JB |
517 | |
518 | /* Remove the breakpoint/catchpoint that was previously inserted | |
77b06cd7 TJB |
519 | with the "insert" method above. Return 0 for success, 1 if the |
520 | breakpoint, watchpoint or catchpoint type is not supported, | |
521 | -1 for failure. */ | |
522 | int (*remove_location) (struct bp_location *); | |
ce78b96d | 523 | |
28010a5d PA |
524 | /* Return true if it the target has stopped due to hitting |
525 | breakpoint location BL. This function does not check if we | |
09ac7c10 TT |
526 | should stop, only if BL explains the stop. ASPACE is the address |
527 | space in which the event occurred, BP_ADDR is the address at | |
528 | which the inferior stopped, and WS is the target_waitstatus | |
529 | describing the event. */ | |
530 | int (*breakpoint_hit) (const struct bp_location *bl, | |
531 | struct address_space *aspace, | |
532 | CORE_ADDR bp_addr, | |
533 | const struct target_waitstatus *ws); | |
ce78b96d | 534 | |
28010a5d PA |
535 | /* Check internal conditions of the breakpoint referred to by BS. |
536 | If we should not stop for this breakpoint, set BS->stop to 0. */ | |
537 | void (*check_status) (struct bpstats *bs); | |
538 | ||
e09342b5 TJB |
539 | /* Tell how many hardware resources (debug registers) are needed |
540 | for this breakpoint. If this function is not provided, then | |
541 | the breakpoint or watchpoint needs one debug register. */ | |
542 | int (*resources_needed) (const struct bp_location *); | |
543 | ||
9c06b0b4 TJB |
544 | /* Tell whether we can downgrade from a hardware watchpoint to a software |
545 | one. If not, the user will not be able to enable the watchpoint when | |
546 | there are not enough hardware resources available. */ | |
547 | int (*works_in_software_mode) (const struct breakpoint *); | |
548 | ||
3086aeae DJ |
549 | /* The normal print routine for this breakpoint, called when we |
550 | hit it. */ | |
348d480f | 551 | enum print_stop_action (*print_it) (struct bpstats *bs); |
3086aeae | 552 | |
0e2de366 MS |
553 | /* Display information about this breakpoint, for "info |
554 | breakpoints". */ | |
a6d9a66e | 555 | void (*print_one) (struct breakpoint *, struct bp_location **); |
3086aeae | 556 | |
f1310107 TJB |
557 | /* Display extra information about this breakpoint, below the normal |
558 | breakpoint description in "info breakpoints". | |
559 | ||
560 | In the example below, the "address range" line was printed | |
561 | by print_one_detail_ranged_breakpoint. | |
562 | ||
563 | (gdb) info breakpoints | |
564 | Num Type Disp Enb Address What | |
565 | 2 hw breakpoint keep y in main at test-watch.c:70 | |
566 | address range: [0x10000458, 0x100004c7] | |
567 | ||
568 | */ | |
569 | void (*print_one_detail) (const struct breakpoint *, struct ui_out *); | |
570 | ||
0e2de366 MS |
571 | /* Display information about this breakpoint after setting it |
572 | (roughly speaking; this is called from "mention"). */ | |
3086aeae | 573 | void (*print_mention) (struct breakpoint *); |
6149aea9 PA |
574 | |
575 | /* Print to FP the CLI command that recreates this breakpoint. */ | |
576 | void (*print_recreate) (struct breakpoint *, struct ui_file *fp); | |
983af33b | 577 | |
5f700d83 | 578 | /* Create SALs from location, storing the result in linespec_result. |
983af33b SDJ |
579 | |
580 | For an explanation about the arguments, see the function | |
5f700d83 | 581 | `create_sals_from_location_default'. |
983af33b SDJ |
582 | |
583 | This function is called inside `create_breakpoint'. */ | |
f00aae0f KS |
584 | void (*create_sals_from_location) (const struct event_location *location, |
585 | struct linespec_result *canonical, | |
586 | enum bptype type_wanted); | |
983af33b SDJ |
587 | |
588 | /* This method will be responsible for creating a breakpoint given its SALs. | |
589 | Usually, it just calls `create_breakpoints_sal' (for ordinary | |
590 | breakpoints). However, there may be some special cases where we might | |
591 | need to do some tweaks, e.g., see | |
592 | `strace_marker_create_breakpoints_sal'. | |
593 | ||
594 | This function is called inside `create_breakpoint'. */ | |
595 | void (*create_breakpoints_sal) (struct gdbarch *, | |
596 | struct linespec_result *, | |
52d361e1 | 597 | char *, char *, |
983af33b SDJ |
598 | enum bptype, enum bpdisp, int, int, |
599 | int, const struct breakpoint_ops *, | |
44f238bb | 600 | int, int, int, unsigned); |
983af33b | 601 | |
5f700d83 | 602 | /* Given the location (second parameter), this method decodes it |
983af33b SDJ |
603 | and provides the SAL locations related to it. For ordinary breakpoints, |
604 | it calls `decode_line_full'. | |
605 | ||
5f700d83 | 606 | This function is called inside `location_to_sals'. */ |
f00aae0f KS |
607 | void (*decode_location) (struct breakpoint *b, |
608 | const struct event_location *location, | |
609 | struct symtabs_and_lines *sals); | |
ab04a2af | 610 | |
47591c29 | 611 | /* Return true if this breakpoint explains a signal. See |
ab04a2af | 612 | bpstat_explains_signal. */ |
47591c29 | 613 | int (*explains_signal) (struct breakpoint *, enum gdb_signal); |
9d6e6e84 HZ |
614 | |
615 | /* Called after evaluating the breakpoint's condition, | |
616 | and only if it evaluated true. */ | |
617 | void (*after_condition_true) (struct bpstats *bs); | |
3086aeae DJ |
618 | }; |
619 | ||
d9b3f62e PA |
620 | /* Helper for breakpoint_ops->print_recreate implementations. Prints |
621 | the "thread" or "task" condition of B, and then a newline. | |
622 | ||
623 | Necessary because most breakpoint implementations accept | |
624 | thread/task conditions at the end of the spec line, like "break foo | |
625 | thread 1", which needs outputting before any breakpoint-type | |
626 | specific extra command necessary for B's recreation. */ | |
627 | extern void print_recreate_thread (struct breakpoint *b, struct ui_file *fp); | |
628 | ||
d983da9c DJ |
629 | enum watchpoint_triggered |
630 | { | |
631 | /* This watchpoint definitely did not trigger. */ | |
632 | watch_triggered_no = 0, | |
633 | ||
634 | /* Some hardware watchpoint triggered, and it might have been this | |
635 | one, but we do not know which it was. */ | |
636 | watch_triggered_unknown, | |
637 | ||
638 | /* This hardware watchpoint definitely did trigger. */ | |
639 | watch_triggered_yes | |
640 | }; | |
641 | ||
74960c60 VP |
642 | typedef struct bp_location *bp_location_p; |
643 | DEF_VEC_P(bp_location_p); | |
644 | ||
9add0f1b | 645 | /* A reference-counted struct command_line. This lets multiple |
5cea2a26 PA |
646 | breakpoints share a single command list. This is an implementation |
647 | detail to the breakpoints module. */ | |
648 | struct counted_command_line; | |
9add0f1b | 649 | |
e09342b5 TJB |
650 | /* Some targets (e.g., embedded PowerPC) need two debug registers to set |
651 | a watchpoint over a memory region. If this flag is true, GDB will use | |
652 | only one register per watchpoint, thus assuming that all acesses that | |
653 | modify a memory location happen at its starting address. */ | |
654 | ||
655 | extern int target_exact_watchpoints; | |
656 | ||
c906108c SS |
657 | /* Note that the ->silent field is not currently used by any commands |
658 | (though the code is in there if it was to be, and set_raw_breakpoint | |
659 | does set it to 0). I implemented it because I thought it would be | |
660 | useful for a hack I had to put in; I'm going to leave it in because | |
661 | I can see how there might be times when it would indeed be useful */ | |
662 | ||
3a5c3e22 | 663 | /* This is for all kinds of breakpoints. */ |
c906108c SS |
664 | |
665 | struct breakpoint | |
c5aa993b | 666 | { |
3a5c3e22 | 667 | /* Methods associated with this breakpoint. */ |
c0a91b2b | 668 | const struct breakpoint_ops *ops; |
3a5c3e22 | 669 | |
c5aa993b | 670 | struct breakpoint *next; |
0e2de366 | 671 | /* Type of breakpoint. */ |
c5aa993b JM |
672 | enum bptype type; |
673 | /* Zero means disabled; remember the info but don't break here. */ | |
b5de0fa7 | 674 | enum enable_state enable_state; |
0e2de366 | 675 | /* What to do with this breakpoint after we hit it. */ |
c5aa993b JM |
676 | enum bpdisp disposition; |
677 | /* Number assigned to distinguish breakpoints. */ | |
678 | int number; | |
679 | ||
5cab636d DJ |
680 | /* Location(s) associated with this high-level breakpoint. */ |
681 | struct bp_location *loc; | |
76897487 | 682 | |
c5aa993b | 683 | /* Non-zero means a silent breakpoint (don't print frame info |
0e2de366 | 684 | if we stop here). */ |
c5aa993b | 685 | unsigned char silent; |
56435ebe TT |
686 | /* Non-zero means display ADDR_STRING to the user verbatim. */ |
687 | unsigned char display_canonical; | |
c5aa993b JM |
688 | /* Number of stops at this breakpoint that should |
689 | be continued automatically before really stopping. */ | |
690 | int ignore_count; | |
816338b5 SS |
691 | |
692 | /* Number of stops at this breakpoint before it will be | |
693 | disabled. */ | |
694 | int enable_count; | |
695 | ||
0e2de366 MS |
696 | /* Chain of command lines to execute when this breakpoint is |
697 | hit. */ | |
9add0f1b | 698 | struct counted_command_line *commands; |
c5aa993b JM |
699 | /* Stack depth (address of frame). If nonzero, break only if fp |
700 | equals this. */ | |
818dd999 | 701 | struct frame_id frame_id; |
c5aa993b | 702 | |
f8eba3c6 TT |
703 | /* The program space used to set the breakpoint. This is only set |
704 | for breakpoints which are specific to a program space; for | |
cc72b2a2 | 705 | non-thread-specific ordinary breakpoints this is NULL. */ |
6c95b8df PA |
706 | struct program_space *pspace; |
707 | ||
f00aae0f KS |
708 | /* Location we used to set the breakpoint (malloc'd). */ |
709 | struct event_location *location; | |
f1310107 | 710 | |
f8eba3c6 TT |
711 | /* The filter that should be passed to decode_line_full when |
712 | re-setting this breakpoint. This may be NULL, but otherwise is | |
713 | allocated with xmalloc. */ | |
714 | char *filter; | |
715 | ||
f00aae0f | 716 | /* For a ranged breakpoint, the location we used to find |
f1310107 | 717 | the end of the range (malloc'd). */ |
f00aae0f | 718 | struct event_location *location_range_end; |
f1310107 | 719 | |
a6d9a66e UW |
720 | /* Architecture we used to set the breakpoint. */ |
721 | struct gdbarch *gdbarch; | |
c5aa993b JM |
722 | /* Language we used to set the breakpoint. */ |
723 | enum language language; | |
724 | /* Input radix we used to set the breakpoint. */ | |
725 | int input_radix; | |
0e2de366 MS |
726 | /* String form of the breakpoint condition (malloc'd), or NULL if |
727 | there is no condition. */ | |
c5aa993b | 728 | char *cond_string; |
e7e0cddf | 729 | |
fb81d016 KS |
730 | /* String form of extra parameters, or NULL if there are none. |
731 | Malloc'd. */ | |
e7e0cddf | 732 | char *extra_string; |
c5aa993b | 733 | |
c5aa993b | 734 | /* Holds the address of the related watchpoint_scope breakpoint |
0e2de366 MS |
735 | when using watchpoints on local variables (might the concept of |
736 | a related breakpoint be useful elsewhere, if not just call it | |
737 | the watchpoint_scope breakpoint or something like that. | |
738 | FIXME). */ | |
c5aa993b JM |
739 | struct breakpoint *related_breakpoint; |
740 | ||
0e2de366 MS |
741 | /* Thread number for thread-specific breakpoint, |
742 | or -1 if don't care. */ | |
c5aa993b JM |
743 | int thread; |
744 | ||
0e2de366 MS |
745 | /* Ada task number for task-specific breakpoint, |
746 | or 0 if don't care. */ | |
4a306c9a JB |
747 | int task; |
748 | ||
c5aa993b JM |
749 | /* Count of the number of times this breakpoint was taken, dumped |
750 | with the info, but not used for anything else. Useful for | |
751 | seeing how many times you hit a break prior to the program | |
752 | aborting, so you can back up to just before the abort. */ | |
753 | int hit_count; | |
754 | ||
0d381245 VP |
755 | /* Is breakpoint's condition not yet parsed because we found |
756 | no location initially so had no context to parse | |
757 | the condition in. */ | |
758 | int condition_not_parsed; | |
1042e4c0 | 759 | |
84f4c1fe PM |
760 | /* With a Python scripting enabled GDB, store a reference to the |
761 | Python object that has been associated with this breakpoint. | |
762 | This is always NULL for a GDB that is not script enabled. It | |
763 | can sometimes be NULL for enabled GDBs as not all breakpoint | |
4cb0213d DE |
764 | types are tracked by the scripting language API. */ |
765 | struct gdbpy_breakpoint_object *py_bp_object; | |
ed3ef339 DE |
766 | |
767 | /* Same as py_bp_object, but for Scheme. */ | |
768 | struct gdbscm_breakpoint_object *scm_bp_object; | |
3a5c3e22 | 769 | }; |
e09342b5 | 770 | |
3a5c3e22 PA |
771 | /* An instance of this type is used to represent a watchpoint. It |
772 | includes a "struct breakpoint" as a kind of base class; users | |
773 | downcast to "struct breakpoint *" when needed. */ | |
9c06b0b4 | 774 | |
3a5c3e22 PA |
775 | struct watchpoint |
776 | { | |
777 | /* The base class. */ | |
778 | struct breakpoint base; | |
779 | ||
780 | /* String form of exp to use for displaying to the user (malloc'd), | |
781 | or NULL if none. */ | |
782 | char *exp_string; | |
783 | /* String form to use for reparsing of EXP (malloc'd) or NULL. */ | |
784 | char *exp_string_reparse; | |
785 | ||
786 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
787 | struct expression *exp; | |
788 | /* The largest block within which it is valid, or NULL if it is | |
789 | valid anywhere (e.g. consists just of global symbols). */ | |
270140bd | 790 | const struct block *exp_valid_block; |
3a5c3e22 PA |
791 | /* The conditional expression if any. */ |
792 | struct expression *cond_exp; | |
793 | /* The largest block within which it is valid, or NULL if it is | |
794 | valid anywhere (e.g. consists just of global symbols). */ | |
270140bd | 795 | const struct block *cond_exp_valid_block; |
3a5c3e22 PA |
796 | /* Value of the watchpoint the last time we checked it, or NULL when |
797 | we do not know the value yet or the value was not readable. VAL | |
798 | is never lazy. */ | |
799 | struct value *val; | |
800 | /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL, | |
801 | then an error occurred reading the value. */ | |
802 | int val_valid; | |
803 | ||
bb9d5f81 PP |
804 | /* When watching the location of a bitfield, contains the offset and size of |
805 | the bitfield. Otherwise contains 0. */ | |
806 | int val_bitpos; | |
807 | int val_bitsize; | |
808 | ||
3a5c3e22 PA |
809 | /* Holds the frame address which identifies the frame this |
810 | watchpoint should be evaluated in, or `null' if the watchpoint | |
811 | should be evaluated on the outermost frame. */ | |
812 | struct frame_id watchpoint_frame; | |
813 | ||
814 | /* Holds the thread which identifies the frame this watchpoint | |
815 | should be considered in scope for, or `null_ptid' if the | |
816 | watchpoint should be evaluated in all threads. */ | |
817 | ptid_t watchpoint_thread; | |
818 | ||
819 | /* For hardware watchpoints, the triggered status according to the | |
820 | hardware. */ | |
821 | enum watchpoint_triggered watchpoint_triggered; | |
822 | ||
823 | /* Whether this watchpoint is exact (see | |
824 | target_exact_watchpoints). */ | |
825 | int exact; | |
826 | ||
827 | /* The mask address for a masked hardware watchpoint. */ | |
828 | CORE_ADDR hw_wp_mask; | |
829 | }; | |
830 | ||
badd37ce SDJ |
831 | /* Given a function FUNC (struct breakpoint *B, void *DATA) and |
832 | USER_DATA, call FUNC for every known breakpoint passing USER_DATA | |
833 | as argument. | |
834 | ||
835 | If FUNC returns 1, the loop stops and the current | |
836 | 'struct breakpoint' being processed is returned. If FUNC returns | |
837 | zero, the loop continues. | |
838 | ||
839 | This function returns either a 'struct breakpoint' pointer or NULL. | |
840 | It was based on BFD's bfd_sections_find_if function. */ | |
841 | ||
842 | extern struct breakpoint *breakpoint_find_if | |
843 | (int (*func) (struct breakpoint *b, void *d), void *user_data); | |
844 | ||
b775012e LM |
845 | /* Return true if BPT is either a software breakpoint or a hardware |
846 | breakpoint. */ | |
847 | ||
848 | extern int is_breakpoint (const struct breakpoint *bpt); | |
849 | ||
3a5c3e22 PA |
850 | /* Returns true if BPT is really a watchpoint. */ |
851 | ||
852 | extern int is_watchpoint (const struct breakpoint *bpt); | |
d6e956e5 | 853 | |
d9b3f62e PA |
854 | /* An instance of this type is used to represent all kinds of |
855 | tracepoints. It includes a "struct breakpoint" as a kind of base | |
856 | class; users downcast to "struct breakpoint *" when needed. */ | |
857 | ||
858 | struct tracepoint | |
859 | { | |
860 | /* The base class. */ | |
861 | struct breakpoint base; | |
862 | ||
863 | /* Number of times this tracepoint should single-step and collect | |
864 | additional data. */ | |
865 | long step_count; | |
866 | ||
867 | /* Number of times this tracepoint should be hit before | |
868 | disabling/ending. */ | |
869 | int pass_count; | |
870 | ||
871 | /* The number of the tracepoint on the target. */ | |
872 | int number_on_target; | |
873 | ||
f196051f SS |
874 | /* The total space taken by all the trace frames for this |
875 | tracepoint. */ | |
876 | ULONGEST traceframe_usage; | |
877 | ||
d9b3f62e PA |
878 | /* The static tracepoint marker id, if known. */ |
879 | char *static_trace_marker_id; | |
880 | ||
881 | /* LTTng/UST allow more than one marker with the same ID string, | |
882 | although it unadvised because it confuses tools. When setting | |
883 | static tracepoints by marker ID, this will record the index in | |
884 | the array of markers we found for the given marker ID for which | |
885 | this static tracepoint corresponds. When resetting breakpoints, | |
886 | we will use this index to try to find the same marker again. */ | |
887 | int static_trace_marker_id_idx; | |
888 | }; | |
889 | ||
d6e956e5 VP |
890 | typedef struct breakpoint *breakpoint_p; |
891 | DEF_VEC_P(breakpoint_p); | |
c906108c | 892 | \f |
53a5351d JM |
893 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
894 | status"). This provides the ability to determine whether we have | |
895 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
896 | |
897 | typedef struct bpstats *bpstat; | |
898 | ||
198757a8 VP |
899 | /* Clears a chain of bpstat, freeing storage |
900 | of each. */ | |
a14ed312 | 901 | extern void bpstat_clear (bpstat *); |
c906108c SS |
902 | |
903 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
904 | is part of the bpstat is copied as well. */ | |
a14ed312 | 905 | extern bpstat bpstat_copy (bpstat); |
c906108c | 906 | |
6c95b8df | 907 | extern bpstat bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
908 | CORE_ADDR pc, ptid_t ptid, |
909 | const struct target_waitstatus *ws); | |
c906108c SS |
910 | \f |
911 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
628fe4e4 JK |
912 | breakpoint (a challenging task). |
913 | ||
914 | The enum values order defines priority-like order of the actions. | |
915 | Once you've decided that some action is appropriate, you'll never | |
916 | go back and decide something of a lower priority is better. Each | |
917 | of these actions is mutually exclusive with the others. That | |
918 | means, that if you find yourself adding a new action class here and | |
919 | wanting to tell GDB that you have two simultaneous actions to | |
920 | handle, something is wrong, and you probably don't actually need a | |
921 | new action type. | |
922 | ||
923 | Note that a step resume breakpoint overrides another breakpoint of | |
924 | signal handling (see comment in wait_for_inferior at where we set | |
925 | the step_resume breakpoint). */ | |
c906108c | 926 | |
c5aa993b JM |
927 | enum bpstat_what_main_action |
928 | { | |
929 | /* Perform various other tests; that is, this bpstat does not | |
930 | say to perform any action (e.g. failed watchpoint and nothing | |
931 | else). */ | |
932 | BPSTAT_WHAT_KEEP_CHECKING, | |
933 | ||
c5aa993b | 934 | /* Remove breakpoints, single step once, then put them back in and |
0e2de366 MS |
935 | go back to what we were doing. It's possible that this should |
936 | be removed from the main_action and put into a separate field, | |
937 | to more cleanly handle | |
938 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
c5aa993b JM |
939 | BPSTAT_WHAT_SINGLE, |
940 | ||
941 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
0e2de366 MS |
942 | and continue. The "remove all other breakpoints" part is |
943 | required if we are also stepping over another breakpoint as | |
944 | well as doing the longjmp handling. */ | |
c5aa993b JM |
945 | BPSTAT_WHAT_SET_LONGJMP_RESUME, |
946 | ||
947 | /* Clear longjmp_resume breakpoint, then handle as | |
948 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
949 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
950 | ||
2c03e5be PA |
951 | /* Clear step resume breakpoint, and keep checking. */ |
952 | BPSTAT_WHAT_STEP_RESUME, | |
953 | ||
628fe4e4 JK |
954 | /* Rather than distinguish between noisy and silent stops here, it |
955 | might be cleaner to have bpstat_print make that decision (also | |
956 | taking into account stop_print_frame and source_only). But the | |
0e2de366 MS |
957 | implications are a bit scary (interaction with auto-displays, |
958 | etc.), so I won't try it. */ | |
c5aa993b | 959 | |
628fe4e4 JK |
960 | /* Stop silently. */ |
961 | BPSTAT_WHAT_STOP_SILENT, | |
c5aa993b | 962 | |
628fe4e4 JK |
963 | /* Stop and print. */ |
964 | BPSTAT_WHAT_STOP_NOISY, | |
4efc6507 | 965 | |
2c03e5be PA |
966 | /* Clear step resume breakpoint, and keep checking. High-priority |
967 | step-resume breakpoints are used when even if there's a user | |
968 | breakpoint at the current PC when we set the step-resume | |
969 | breakpoint, we don't want to re-handle any breakpoint other | |
970 | than the step-resume when it's hit; instead we want to move | |
971 | past the breakpoint. This is used in the case of skipping | |
972 | signal handlers. */ | |
973 | BPSTAT_WHAT_HP_STEP_RESUME, | |
c5aa993b JM |
974 | }; |
975 | ||
aa7d318d TT |
976 | /* An enum indicating the kind of "stack dummy" stop. This is a bit |
977 | of a misnomer because only one kind of truly a stack dummy. */ | |
978 | enum stop_stack_kind | |
979 | { | |
980 | /* We didn't stop at a stack dummy breakpoint. */ | |
981 | STOP_NONE = 0, | |
982 | ||
983 | /* Stopped at a stack dummy. */ | |
984 | STOP_STACK_DUMMY, | |
985 | ||
986 | /* Stopped at std::terminate. */ | |
987 | STOP_STD_TERMINATE | |
988 | }; | |
989 | ||
c5aa993b JM |
990 | struct bpstat_what |
991 | { | |
992 | enum bpstat_what_main_action main_action; | |
993 | ||
0e2de366 MS |
994 | /* Did we hit a call dummy breakpoint? This only goes with a |
995 | main_action of BPSTAT_WHAT_STOP_SILENT or | |
996 | BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call | |
997 | dummy without popping the frame is not a useful one). */ | |
aa7d318d | 998 | enum stop_stack_kind call_dummy; |
186c406b TT |
999 | |
1000 | /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and | |
1001 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a | |
1002 | longjmp, false if we are handling an exception. */ | |
1003 | int is_longjmp; | |
c5aa993b | 1004 | }; |
c906108c SS |
1005 | |
1006 | /* Tell what to do about this bpstat. */ | |
a14ed312 | 1007 | struct bpstat_what bpstat_what (bpstat); |
243a9253 PA |
1008 | |
1009 | /* Run breakpoint event callbacks associated with the breakpoints that | |
1010 | triggered. */ | |
1011 | extern void bpstat_run_callbacks (bpstat bs_head); | |
1012 | ||
0e2de366 | 1013 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ |
a14ed312 | 1014 | bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *); |
c906108c | 1015 | |
47591c29 PA |
1016 | /* Nonzero if a signal that we got in target_wait() was due to |
1017 | circumstances explained by the bpstat; the signal is therefore not | |
1018 | random. */ | |
1019 | extern int bpstat_explains_signal (bpstat, enum gdb_signal); | |
c906108c | 1020 | |
67822962 PA |
1021 | /* Nonzero is this bpstat causes a stop. */ |
1022 | extern int bpstat_causes_stop (bpstat); | |
1023 | ||
c906108c SS |
1024 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1025 | without hardware support). This isn't related to a specific bpstat, | |
1026 | just to things like whether watchpoints are set. */ | |
a14ed312 | 1027 | extern int bpstat_should_step (void); |
c906108c | 1028 | |
c906108c SS |
1029 | /* Print a message indicating what happened. Returns nonzero to |
1030 | say that only the source line should be printed after this (zero | |
1031 | return means print the frame as well as the source line). */ | |
36dfb11c | 1032 | extern enum print_stop_action bpstat_print (bpstat, int); |
c906108c | 1033 | |
0e2de366 MS |
1034 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
1035 | stopped at. *BSP upon return is a bpstat which points to the | |
1036 | remaining breakpoints stopped at (but which is not guaranteed to be | |
1037 | good for anything but further calls to bpstat_num). | |
1038 | ||
8671a17b PA |
1039 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
1040 | Return -1 if stopped at a breakpoint that has been deleted since | |
1041 | we set it. | |
1042 | Return 1 otherwise. */ | |
1043 | extern int bpstat_num (bpstat *, int *); | |
c906108c | 1044 | |
347bddb7 PA |
1045 | /* Perform actions associated with the stopped inferior. Actually, we |
1046 | just use this for breakpoint commands. Perhaps other actions will | |
1047 | go here later, but this is executed at a late time (from the | |
1048 | command loop). */ | |
1049 | extern void bpstat_do_actions (void); | |
c906108c | 1050 | |
e93ca019 JK |
1051 | /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will |
1052 | not be performed. */ | |
1053 | extern void bpstat_clear_actions (void); | |
c906108c | 1054 | |
c906108c | 1055 | /* Implementation: */ |
e514a9d6 | 1056 | |
0e2de366 MS |
1057 | /* Values used to tell the printing routine how to behave for this |
1058 | bpstat. */ | |
e514a9d6 JM |
1059 | enum bp_print_how |
1060 | { | |
1061 | /* This is used when we want to do a normal printing of the reason | |
0e2de366 MS |
1062 | for stopping. The output will depend on the type of eventpoint |
1063 | we are dealing with. This is the default value, most commonly | |
1064 | used. */ | |
e514a9d6 | 1065 | print_it_normal, |
0e2de366 MS |
1066 | /* This is used when nothing should be printed for this bpstat |
1067 | entry. */ | |
e514a9d6 JM |
1068 | print_it_noop, |
1069 | /* This is used when everything which needs to be printed has | |
1070 | already been printed. But we still want to print the frame. */ | |
1071 | print_it_done | |
1072 | }; | |
1073 | ||
c906108c | 1074 | struct bpstats |
c5aa993b | 1075 | { |
f431efe5 PA |
1076 | /* Linked list because there can be more than one breakpoint at |
1077 | the same place, and a bpstat reflects the fact that all have | |
1078 | been hit. */ | |
c5aa993b | 1079 | bpstat next; |
f431efe5 PA |
1080 | |
1081 | /* Location that caused the stop. Locations are refcounted, so | |
1082 | this will never be NULL. Note that this location may end up | |
1083 | detached from a breakpoint, but that does not necessary mean | |
1084 | that the struct breakpoint is gone. E.g., consider a | |
1085 | watchpoint with a condition that involves an inferior function | |
1086 | call. Watchpoint locations are recreated often (on resumes, | |
1087 | hence on infcalls too). Between creating the bpstat and after | |
1088 | evaluating the watchpoint condition, this location may hence | |
1089 | end up detached from its original owner watchpoint, even though | |
1090 | the watchpoint is still listed. If it's condition evaluates as | |
1091 | true, we still want this location to cause a stop, and we will | |
1092 | still need to know which watchpoint it was originally attached. | |
1093 | What this means is that we should not (in most cases) follow | |
1094 | the `bpstat->bp_location->owner' link, but instead use the | |
1095 | `breakpoint_at' field below. */ | |
1096 | struct bp_location *bp_location_at; | |
1097 | ||
1098 | /* Breakpoint that caused the stop. This is nullified if the | |
1099 | breakpoint ends up being deleted. See comments on | |
1100 | `bp_location_at' above for why do we need this field instead of | |
1101 | following the location's owner. */ | |
1102 | struct breakpoint *breakpoint_at; | |
1103 | ||
9add0f1b TT |
1104 | /* The associated command list. */ |
1105 | struct counted_command_line *commands; | |
f431efe5 | 1106 | |
c5aa993b | 1107 | /* Old value associated with a watchpoint. */ |
278cd55f | 1108 | struct value *old_val; |
c5aa993b JM |
1109 | |
1110 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
1111 | char print; | |
1112 | ||
1113 | /* Nonzero if this breakpoint tells us to stop. */ | |
1114 | char stop; | |
1115 | ||
e514a9d6 JM |
1116 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
1117 | associated with this element of the bpstat chain. */ | |
1118 | enum bp_print_how print_it; | |
c5aa993b | 1119 | }; |
c906108c SS |
1120 | |
1121 | enum inf_context | |
c5aa993b JM |
1122 | { |
1123 | inf_starting, | |
1124 | inf_running, | |
6ca15a4b PA |
1125 | inf_exited, |
1126 | inf_execd | |
c5aa993b | 1127 | }; |
c2c6d25f JM |
1128 | |
1129 | /* The possible return values for breakpoint_here_p. | |
1130 | We guarantee that zero always means "no breakpoint here". */ | |
1131 | enum breakpoint_here | |
1132 | { | |
1133 | no_breakpoint_here = 0, | |
1134 | ordinary_breakpoint_here, | |
1135 | permanent_breakpoint_here | |
1136 | }; | |
c906108c | 1137 | \f |
c5aa993b | 1138 | |
c906108c SS |
1139 | /* Prototypes for breakpoint-related functions. */ |
1140 | ||
1cf4d951 PA |
1141 | /* Return 1 if there's a program/permanent breakpoint planted in |
1142 | memory at ADDRESS, return 0 otherwise. */ | |
1143 | ||
1144 | extern int program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address); | |
1145 | ||
0e2de366 MS |
1146 | extern enum breakpoint_here breakpoint_here_p (struct address_space *, |
1147 | CORE_ADDR); | |
c906108c | 1148 | |
6c95b8df | 1149 | extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR); |
1c5cfe86 | 1150 | |
6c95b8df | 1151 | extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c906108c | 1152 | |
0e2de366 MS |
1153 | extern int regular_breakpoint_inserted_here_p (struct address_space *, |
1154 | CORE_ADDR); | |
c36b740a | 1155 | |
0e2de366 MS |
1156 | extern int software_breakpoint_inserted_here_p (struct address_space *, |
1157 | CORE_ADDR); | |
4fa8626c | 1158 | |
9c02b525 PA |
1159 | /* Return non-zero iff there is a hardware breakpoint inserted at |
1160 | PC. */ | |
1161 | extern int hardware_breakpoint_inserted_here_p (struct address_space *, | |
1162 | CORE_ADDR); | |
1163 | ||
34b7e8a6 PA |
1164 | /* Check whether any location of BP is inserted at PC. */ |
1165 | ||
1166 | extern int breakpoint_has_location_inserted_here (struct breakpoint *bp, | |
1167 | struct address_space *aspace, | |
1168 | CORE_ADDR pc); | |
1169 | ||
2adfaa28 PA |
1170 | extern int single_step_breakpoint_inserted_here_p (struct address_space *, |
1171 | CORE_ADDR); | |
1172 | ||
9093389c PA |
1173 | /* Returns true if there's a hardware watchpoint or access watchpoint |
1174 | inserted in the range defined by ADDR and LEN. */ | |
1175 | extern int hardware_watchpoint_inserted_in_range (struct address_space *, | |
1176 | CORE_ADDR addr, | |
1177 | ULONGEST len); | |
1178 | ||
31e77af2 PA |
1179 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
1180 | same breakpoint location. In most targets, this can only be true | |
1181 | if ASPACE1 matches ASPACE2. On targets that have global | |
1182 | breakpoints, the address space doesn't really matter. */ | |
1183 | ||
1184 | extern int breakpoint_address_match (struct address_space *aspace1, | |
1185 | CORE_ADDR addr1, | |
1186 | struct address_space *aspace2, | |
1187 | CORE_ADDR addr2); | |
1188 | ||
ae66c1fc | 1189 | extern void until_break_command (char *, int, int); |
c906108c | 1190 | |
28010a5d PA |
1191 | /* Initialize a struct bp_location. */ |
1192 | ||
1193 | extern void init_bp_location (struct bp_location *loc, | |
1194 | const struct bp_location_ops *ops, | |
1195 | struct breakpoint *owner); | |
1196 | ||
0e30163f | 1197 | extern void update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
1198 | struct symtabs_and_lines sals, |
1199 | struct symtabs_and_lines sals_end); | |
0e30163f | 1200 | |
a14ed312 | 1201 | extern void breakpoint_re_set (void); |
69de3c6a | 1202 | |
a14ed312 | 1203 | extern void breakpoint_re_set_thread (struct breakpoint *); |
c906108c | 1204 | |
c906108c | 1205 | extern struct breakpoint *set_momentary_breakpoint |
a6d9a66e | 1206 | (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype); |
c906108c | 1207 | |
611c83ae | 1208 | extern struct breakpoint *set_momentary_breakpoint_at_pc |
a6d9a66e | 1209 | (struct gdbarch *, CORE_ADDR pc, enum bptype type); |
611c83ae | 1210 | |
e58b0e63 PA |
1211 | extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); |
1212 | ||
a14ed312 | 1213 | extern void set_ignore_count (int, int, int); |
c906108c | 1214 | |
a14ed312 | 1215 | extern void breakpoint_init_inferior (enum inf_context); |
c906108c | 1216 | |
4d6140d9 AC |
1217 | extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); |
1218 | ||
a14ed312 | 1219 | extern void delete_breakpoint (struct breakpoint *); |
c906108c | 1220 | |
a14ed312 | 1221 | extern void breakpoint_auto_delete (bpstat); |
c906108c | 1222 | |
20388dd6 YQ |
1223 | typedef void (*walk_bp_location_callback) (struct bp_location *, void *); |
1224 | ||
1225 | extern void iterate_over_bp_locations (walk_bp_location_callback); | |
1226 | ||
5cea2a26 PA |
1227 | /* Return the chain of command lines to execute when this breakpoint |
1228 | is hit. */ | |
1229 | extern struct command_line *breakpoint_commands (struct breakpoint *b); | |
1230 | ||
956a9fb9 JB |
1231 | /* Return a string image of DISP. The string is static, and thus should |
1232 | NOT be deallocated after use. */ | |
1233 | const char *bpdisp_text (enum bpdisp disp); | |
1234 | ||
a14ed312 | 1235 | extern void break_command (char *, int); |
c906108c | 1236 | |
a14ed312 KB |
1237 | extern void hbreak_command_wrapper (char *, int); |
1238 | extern void thbreak_command_wrapper (char *, int); | |
1239 | extern void rbreak_command_wrapper (char *, int); | |
84f4c1fe PM |
1240 | extern void watch_command_wrapper (char *, int, int); |
1241 | extern void awatch_command_wrapper (char *, int, int); | |
1242 | extern void rwatch_command_wrapper (char *, int, int); | |
a14ed312 | 1243 | extern void tbreak_command (char *, int); |
c906108c | 1244 | |
ab04a2af | 1245 | extern struct breakpoint_ops base_breakpoint_ops; |
348d480f | 1246 | extern struct breakpoint_ops bkpt_breakpoint_ops; |
19ca11c5 | 1247 | extern struct breakpoint_ops tracepoint_breakpoint_ops; |
c5867ab6 | 1248 | extern struct breakpoint_ops dprintf_breakpoint_ops; |
348d480f | 1249 | |
2060206e | 1250 | extern void initialize_breakpoint_ops (void); |
348d480f | 1251 | |
9ac4176b PA |
1252 | /* Arguments to pass as context to some catch command handlers. */ |
1253 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
1254 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
1255 | ||
1256 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
1257 | lists, and pass some additional user data to the command | |
1258 | function. */ | |
1259 | ||
1260 | extern void | |
1261 | add_catch_command (char *name, char *docstring, | |
82ae6c8d | 1262 | cmd_sfunc_ftype *sfunc, |
625e8578 | 1263 | completer_ftype *completer, |
9ac4176b PA |
1264 | void *user_data_catch, |
1265 | void *user_data_tcatch); | |
1266 | ||
28010a5d | 1267 | /* Initialize a breakpoint struct for Ada exception catchpoints. */ |
9ac4176b PA |
1268 | |
1269 | extern void | |
28010a5d PA |
1270 | init_ada_exception_breakpoint (struct breakpoint *b, |
1271 | struct gdbarch *gdbarch, | |
1272 | struct symtab_and_line sal, | |
1273 | char *addr_string, | |
c0a91b2b | 1274 | const struct breakpoint_ops *ops, |
28010a5d | 1275 | int tempflag, |
349774ef | 1276 | int enabled, |
28010a5d PA |
1277 | int from_tty); |
1278 | ||
ab04a2af TT |
1279 | extern void init_catchpoint (struct breakpoint *b, |
1280 | struct gdbarch *gdbarch, int tempflag, | |
1281 | char *cond_string, | |
1282 | const struct breakpoint_ops *ops); | |
1283 | ||
28010a5d | 1284 | /* Add breakpoint B on the breakpoint list, and notify the user, the |
3a5c3e22 PA |
1285 | target and breakpoint_created observers of its existence. If |
1286 | INTERNAL is non-zero, the breakpoint number will be allocated from | |
3ea46bff YQ |
1287 | the internal breakpoint count. If UPDATE_GLL is non-zero, |
1288 | update_global_location_list will be called. */ | |
28010a5d | 1289 | |
3ea46bff YQ |
1290 | extern void install_breakpoint (int internal, struct breakpoint *b, |
1291 | int update_gll); | |
9ac4176b | 1292 | |
44f238bb PA |
1293 | /* Flags that can be passed down to create_breakpoint, etc., to affect |
1294 | breakpoint creation in several ways. */ | |
1295 | ||
1296 | enum breakpoint_create_flags | |
1297 | { | |
1298 | /* We're adding a breakpoint to our tables that is already | |
1299 | inserted in the target. */ | |
1300 | CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0 | |
1301 | }; | |
1302 | ||
f00aae0f KS |
1303 | /* Set a breakpoint. This function is shared between CLI and MI functions |
1304 | for setting a breakpoint at LOCATION. | |
1305 | ||
1306 | This function has two major modes of operations, selected by the | |
1307 | PARSE_EXTRA parameter. | |
1308 | ||
1309 | If PARSE_EXTRA is zero, LOCATION is just the breakpoint's location, | |
1310 | with condition, thread, and extra string specified by the COND_STRING, | |
1311 | THREAD, and EXTRA_STRING parameters. | |
1312 | ||
1313 | If PARSE_EXTRA is non-zero, this function will attempt to extract | |
1314 | the condition, thread, and extra string from EXTRA_STRING, ignoring | |
1315 | the similarly named parameters. | |
1316 | ||
1317 | If INTERNAL is non-zero, the breakpoint number will be allocated | |
1318 | from the internal breakpoint count. | |
1319 | ||
1320 | Returns true if any breakpoint was created; false otherwise. */ | |
1321 | ||
1322 | extern int create_breakpoint (struct gdbarch *gdbarch, | |
1323 | const struct event_location *location, | |
8cdf0e15 | 1324 | char *cond_string, int thread, |
e7e0cddf | 1325 | char *extra_string, |
f00aae0f | 1326 | int parse_extra, |
0fb4aa4b | 1327 | int tempflag, enum bptype wanted_type, |
8cdf0e15 VP |
1328 | int ignore_count, |
1329 | enum auto_boolean pending_break_support, | |
c0a91b2b | 1330 | const struct breakpoint_ops *ops, |
8cdf0e15 | 1331 | int from_tty, |
84f4c1fe | 1332 | int enabled, |
44f238bb | 1333 | int internal, unsigned flags); |
98deb0da | 1334 | |
e236ba44 | 1335 | extern void insert_breakpoints (void); |
c906108c | 1336 | |
a14ed312 | 1337 | extern int remove_breakpoints (void); |
c906108c | 1338 | |
6c95b8df PA |
1339 | extern int remove_breakpoints_pid (int pid); |
1340 | ||
c906108c SS |
1341 | /* This function can be used to physically insert eventpoints from the |
1342 | specified traced inferior process, without modifying the breakpoint | |
0e2de366 MS |
1343 | package's state. This can be useful for those targets which |
1344 | support following the processes of a fork() or vfork() system call, | |
1345 | when both of the resulting two processes are to be followed. */ | |
a14ed312 | 1346 | extern int reattach_breakpoints (int); |
c906108c SS |
1347 | |
1348 | /* This function can be used to update the breakpoint package's state | |
1349 | after an exec() system call has been executed. | |
1350 | ||
1351 | This function causes the following: | |
1352 | ||
c5aa993b JM |
1353 | - All eventpoints are marked "not inserted". |
1354 | - All eventpoints with a symbolic address are reset such that | |
1355 | the symbolic address must be reevaluated before the eventpoints | |
1356 | can be reinserted. | |
1357 | - The solib breakpoints are explicitly removed from the breakpoint | |
1358 | list. | |
1359 | - A step-resume breakpoint, if any, is explicitly removed from the | |
1360 | breakpoint list. | |
1361 | - All eventpoints without a symbolic address are removed from the | |
0e2de366 | 1362 | breakpoint list. */ |
a14ed312 | 1363 | extern void update_breakpoints_after_exec (void); |
c906108c SS |
1364 | |
1365 | /* This function can be used to physically remove hardware breakpoints | |
1366 | and watchpoints from the specified traced inferior process, without | |
1367 | modifying the breakpoint package's state. This can be useful for | |
1368 | those targets which support following the processes of a fork() or | |
1369 | vfork() system call, when one of the resulting two processes is to | |
1370 | be detached and allowed to run free. | |
c5aa993b | 1371 | |
c906108c | 1372 | It is an error to use this function on the process whose id is |
39f77062 | 1373 | inferior_ptid. */ |
d80ee84f | 1374 | extern int detach_breakpoints (ptid_t ptid); |
c5aa993b | 1375 | |
6c95b8df PA |
1376 | /* This function is called when program space PSPACE is about to be |
1377 | deleted. It takes care of updating breakpoints to not reference | |
1378 | this PSPACE anymore. */ | |
1379 | extern void breakpoint_program_space_exit (struct program_space *pspace); | |
1380 | ||
186c406b TT |
1381 | extern void set_longjmp_breakpoint (struct thread_info *tp, |
1382 | struct frame_id frame); | |
611c83ae PA |
1383 | extern void delete_longjmp_breakpoint (int thread); |
1384 | ||
f59f708a PA |
1385 | /* Mark all longjmp breakpoints from THREAD for later deletion. */ |
1386 | extern void delete_longjmp_breakpoint_at_next_stop (int thread); | |
1387 | ||
e2e4d78b | 1388 | extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void); |
b67a2c6f | 1389 | extern void check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp); |
e2e4d78b | 1390 | |
1900040c MS |
1391 | extern void enable_overlay_breakpoints (void); |
1392 | extern void disable_overlay_breakpoints (void); | |
c906108c | 1393 | |
aa7d318d TT |
1394 | extern void set_std_terminate_breakpoint (void); |
1395 | extern void delete_std_terminate_breakpoint (void); | |
1396 | ||
c906108c SS |
1397 | /* These functions respectively disable or reenable all currently |
1398 | enabled watchpoints. When disabled, the watchpoints are marked | |
64b9b334 | 1399 | call_disabled. When re-enabled, they are marked enabled. |
c906108c | 1400 | |
04714b91 | 1401 | The intended client of these functions is call_function_by_hand. |
c906108c SS |
1402 | |
1403 | The inferior must be stopped, and all breakpoints removed, when | |
1404 | these functions are used. | |
1405 | ||
1406 | The need for these functions is that on some targets (e.g., HP-UX), | |
1407 | gdb is unable to unwind through the dummy frame that is pushed as | |
1408 | part of the implementation of a call command. Watchpoints can | |
1409 | cause the inferior to stop in places where this frame is visible, | |
1410 | and that can cause execution control to become very confused. | |
1411 | ||
7e73cedf | 1412 | Note that if a user sets breakpoints in an interactively called |
64b9b334 | 1413 | function, the call_disabled watchpoints will have been re-enabled |
c906108c SS |
1414 | when the first such breakpoint is reached. However, on targets |
1415 | that are unable to unwind through the call dummy frame, watches | |
1416 | of stack-based storage may then be deleted, because gdb will | |
1417 | believe that their watched storage is out of scope. (Sigh.) */ | |
a14ed312 | 1418 | extern void disable_watchpoints_before_interactive_call_start (void); |
c906108c | 1419 | |
a14ed312 | 1420 | extern void enable_watchpoints_after_interactive_call_stop (void); |
c906108c | 1421 | |
8bea4e01 UW |
1422 | /* These functions disable and re-enable all breakpoints during |
1423 | inferior startup. They are intended to be called from solib | |
1424 | code where necessary. This is needed on platforms where the | |
1425 | main executable is relocated at some point during startup | |
1426 | processing, making breakpoint addresses invalid. | |
1427 | ||
1428 | If additional breakpoints are created after the routine | |
1429 | disable_breakpoints_before_startup but before the routine | |
1430 | enable_breakpoints_after_startup was called, they will also | |
1431 | be marked as disabled. */ | |
1432 | extern void disable_breakpoints_before_startup (void); | |
1433 | extern void enable_breakpoints_after_startup (void); | |
1434 | ||
40c03ae8 | 1435 | /* For script interpreters that need to define breakpoint commands |
0e2de366 MS |
1436 | after they've already read the commands into a struct |
1437 | command_line. */ | |
40c03ae8 EZ |
1438 | extern enum command_control_type commands_from_control_command |
1439 | (char *arg, struct command_line *cmd); | |
c5aa993b | 1440 | |
a14ed312 | 1441 | extern void clear_breakpoint_hit_counts (void); |
c906108c | 1442 | |
48cb2d85 VP |
1443 | extern struct breakpoint *get_breakpoint (int num); |
1444 | ||
0e2de366 MS |
1445 | /* The following are for displays, which aren't really breakpoints, |
1446 | but here is as good a place as any for them. */ | |
c906108c | 1447 | |
a14ed312 | 1448 | extern void disable_current_display (void); |
c906108c | 1449 | |
a14ed312 | 1450 | extern void do_displays (void); |
c906108c | 1451 | |
a14ed312 | 1452 | extern void disable_display (int); |
c906108c | 1453 | |
a14ed312 | 1454 | extern void clear_displays (void); |
c906108c | 1455 | |
a14ed312 | 1456 | extern void disable_breakpoint (struct breakpoint *); |
c906108c | 1457 | |
a14ed312 | 1458 | extern void enable_breakpoint (struct breakpoint *); |
c906108c | 1459 | |
48cb2d85 VP |
1460 | extern void breakpoint_set_commands (struct breakpoint *b, |
1461 | struct command_line *commands); | |
1462 | ||
45a43567 TT |
1463 | extern void breakpoint_set_silent (struct breakpoint *b, int silent); |
1464 | ||
1465 | extern void breakpoint_set_thread (struct breakpoint *b, int thread); | |
1466 | ||
1467 | extern void breakpoint_set_task (struct breakpoint *b, int task); | |
1468 | ||
25b22b0a PA |
1469 | /* Clear the "inserted" flag in all breakpoints. */ |
1470 | extern void mark_breakpoints_out (void); | |
1471 | ||
4efc6507 DE |
1472 | extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *, |
1473 | CORE_ADDR); | |
1474 | ||
a6d9a66e UW |
1475 | extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *, |
1476 | CORE_ADDR); | |
c906108c | 1477 | |
f37f681c PA |
1478 | /* Create an solib event breakpoint at ADDRESS in the current program |
1479 | space, and immediately try to insert it. Returns a pointer to the | |
1480 | breakpoint on success. Deletes the new breakpoint and returns NULL | |
1481 | if inserting the breakpoint fails. */ | |
1482 | extern struct breakpoint *create_and_insert_solib_event_breakpoint | |
1483 | (struct gdbarch *gdbarch, CORE_ADDR address); | |
1484 | ||
a6d9a66e UW |
1485 | extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *, |
1486 | CORE_ADDR); | |
c4093a6a | 1487 | |
03673fc7 PP |
1488 | extern void remove_jit_event_breakpoints (void); |
1489 | ||
a14ed312 | 1490 | extern void remove_solib_event_breakpoints (void); |
c906108c | 1491 | |
f37f681c PA |
1492 | /* Mark solib event breakpoints of the current program space with |
1493 | delete at next stop disposition. */ | |
1494 | extern void remove_solib_event_breakpoints_at_next_stop (void); | |
1495 | ||
a14ed312 | 1496 | extern void remove_thread_event_breakpoints (void); |
c4093a6a | 1497 | |
cb851954 | 1498 | extern void disable_breakpoints_in_shlibs (void); |
c906108c | 1499 | |
0e2de366 | 1500 | /* This function returns TRUE if ep is a catchpoint. */ |
c326b90e | 1501 | extern int is_catchpoint (struct breakpoint *); |
c5aa993b | 1502 | |
91985142 MG |
1503 | /* Shared helper function (MI and CLI) for creating and installing |
1504 | a shared object event catchpoint. */ | |
1505 | extern void add_solib_catchpoint (char *arg, int is_load, int is_temp, | |
1506 | int enabled); | |
1507 | ||
c2c6d25f | 1508 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
0e2de366 | 1509 | deletes all breakpoints. */ |
c2c6d25f JM |
1510 | extern void delete_command (char *arg, int from_tty); |
1511 | ||
7c16b83e PA |
1512 | /* Create and insert a new software single step breakpoint for the |
1513 | current thread. May be called multiple times; each time will add a | |
1514 | new location to the set of potential addresses the next instruction | |
1515 | is at. */ | |
6c95b8df | 1516 | extern void insert_single_step_breakpoint (struct gdbarch *, |
0e2de366 MS |
1517 | struct address_space *, |
1518 | CORE_ADDR); | |
d983da9c DJ |
1519 | /* Check if any hardware watchpoints have triggered, according to the |
1520 | target. */ | |
1521 | int watchpoints_triggered (struct target_waitstatus *); | |
1522 | ||
f0ba3972 PA |
1523 | /* Helper for transparent breakpoint hiding for memory read and write |
1524 | routines. | |
1525 | ||
1526 | Update one of READBUF or WRITEBUF with either the shadows | |
1527 | (READBUF), or the breakpoint instructions (WRITEBUF) of inserted | |
1528 | breakpoints at the memory range defined by MEMADDR and extending | |
1529 | for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG | |
1530 | on entry.*/ | |
1531 | extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1532 | const gdb_byte *writebuf_org, | |
1533 | ULONGEST memaddr, LONGEST len); | |
8defab1a | 1534 | |
b57bacec PA |
1535 | /* Return true if breakpoints should be inserted now. That'll be the |
1536 | case if either: | |
1537 | ||
1538 | - the target has global breakpoints. | |
1539 | ||
1540 | - "breakpoint always-inserted" is on, and the target has | |
1541 | execution. | |
1542 | ||
1543 | - threads are executing. | |
1544 | */ | |
a25a5a45 | 1545 | extern int breakpoints_should_be_inserted_now (void); |
74960c60 | 1546 | |
20874c92 VP |
1547 | /* Called each time new event from target is processed. |
1548 | Retires previously deleted breakpoint locations that | |
1549 | in our opinion won't ever trigger. */ | |
1550 | extern void breakpoint_retire_moribund (void); | |
1551 | ||
adc36818 | 1552 | /* Set break condition of breakpoint B to EXP. */ |
7a26bd4d | 1553 | extern void set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
1554 | int from_tty); |
1555 | ||
a96d9b2e SDJ |
1556 | /* Checks if we are catching syscalls or not. |
1557 | Returns 0 if not, greater than 0 if we are. */ | |
1558 | extern int catch_syscall_enabled (void); | |
1559 | ||
1560 | /* Checks if we are catching syscalls with the specific | |
1561 | syscall_number. Used for "filtering" the catchpoints. | |
1562 | Returns 0 if not, greater than 0 if we are. */ | |
1563 | extern int catching_syscall_number (int syscall_number); | |
1564 | ||
1042e4c0 | 1565 | /* Return a tracepoint with the given number if found. */ |
d9b3f62e | 1566 | extern struct tracepoint *get_tracepoint (int num); |
1042e4c0 | 1567 | |
d9b3f62e | 1568 | extern struct tracepoint *get_tracepoint_by_number_on_target (int num); |
d5551862 | 1569 | |
1042e4c0 | 1570 | /* Find a tracepoint by parsing a number in the supplied string. */ |
d9b3f62e | 1571 | extern struct tracepoint * |
197f0a60 | 1572 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 1573 | struct get_number_or_range_state *state); |
1042e4c0 SS |
1574 | |
1575 | /* Return a vector of all tracepoints currently defined. The vector | |
1576 | is newly allocated; the caller should free when done with it. */ | |
1577 | extern VEC(breakpoint_p) *all_tracepoints (void); | |
1578 | ||
d77f58be | 1579 | extern int is_tracepoint (const struct breakpoint *b); |
a7bdde9e | 1580 | |
0fb4aa4b PA |
1581 | /* Return a vector of all static tracepoints defined at ADDR. The |
1582 | vector is newly allocated; the caller should free when done with | |
1583 | it. */ | |
1584 | extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr); | |
1585 | ||
a7bdde9e VP |
1586 | /* Function that can be passed to read_command_line to validate |
1587 | that each command is suitable for tracepoint command list. */ | |
1588 | extern void check_tracepoint_command (char *line, void *closure); | |
1589 | ||
95a42b64 TT |
1590 | /* Call at the start and end of an "rbreak" command to register |
1591 | breakpoint numbers for a later "commands" command. */ | |
1592 | extern void start_rbreak_breakpoints (void); | |
1593 | extern void end_rbreak_breakpoints (void); | |
1594 | ||
84f4c1fe PM |
1595 | /* Breakpoint iterator function. |
1596 | ||
1597 | Calls a callback function once for each breakpoint, so long as the | |
1598 | callback function returns false. If the callback function returns | |
1599 | true, the iteration will end and the current breakpoint will be | |
1600 | returned. This can be useful for implementing a search for a | |
1601 | breakpoint with arbitrary attributes, or for applying an operation | |
1602 | to every breakpoint. */ | |
1603 | extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *, | |
1604 | void *), void *); | |
1605 | ||
0574c78f GB |
1606 | /* Nonzero if the specified PC cannot be a location where functions |
1607 | have been inlined. */ | |
1608 | ||
1609 | extern int pc_at_non_inline_function (struct address_space *aspace, | |
09ac7c10 TT |
1610 | CORE_ADDR pc, |
1611 | const struct target_waitstatus *ws); | |
0574c78f | 1612 | |
09d682a4 TT |
1613 | extern int user_breakpoint_p (struct breakpoint *); |
1614 | ||
1bfeeb0f JL |
1615 | /* Attempt to determine architecture of location identified by SAL. */ |
1616 | extern struct gdbarch *get_sal_arch (struct symtab_and_line sal); | |
1617 | ||
2f202fde JK |
1618 | extern void breakpoint_free_objfile (struct objfile *objfile); |
1619 | ||
916703c0 TT |
1620 | extern char *ep_parse_optional_if_clause (char **arg); |
1621 | ||
c906108c | 1622 | #endif /* !defined (BREAKPOINT_H) */ |