Commit | Line | Data |
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c906108c | 1 | /* Data structures associated with breakpoints in GDB. |
28e7fd62 | 2 | Copyright (C) 1992-2013 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" |
c906108c | 28 | |
278cd55f | 29 | struct value; |
fe898f56 | 30 | struct block; |
4cb0213d | 31 | struct gdbpy_breakpoint_object; |
197f0a60 | 32 | struct get_number_or_range_state; |
619cebe8 | 33 | struct thread_info; |
28010a5d PA |
34 | struct bpstats; |
35 | struct bp_location; | |
983af33b SDJ |
36 | struct linespec_result; |
37 | struct linespec_sals; | |
278cd55f | 38 | |
0e2de366 MS |
39 | /* This is the maximum number of bytes a breakpoint instruction can |
40 | take. Feel free to increase it. It's just used in a few places to | |
41 | size arrays that should be independent of the target | |
42 | architecture. */ | |
c906108c SS |
43 | |
44 | #define BREAKPOINT_MAX 16 | |
45 | \f | |
a96d9b2e SDJ |
46 | |
47 | /* Type of breakpoint. */ | |
0e2de366 MS |
48 | /* FIXME In the future, we should fold all other breakpoint-like |
49 | things into here. This includes: | |
c906108c | 50 | |
0e2de366 MS |
51 | * single-step (for machines where we have to simulate single |
52 | stepping) (probably, though perhaps it is better for it to look as | |
53 | much as possible like a single-step to wait_for_inferior). */ | |
c5aa993b JM |
54 | |
55 | enum bptype | |
56 | { | |
0e2de366 | 57 | bp_none = 0, /* Eventpoint has been deleted */ |
c5aa993b JM |
58 | bp_breakpoint, /* Normal breakpoint */ |
59 | bp_hardware_breakpoint, /* Hardware assisted breakpoint */ | |
60 | bp_until, /* used by until command */ | |
61 | bp_finish, /* used by finish command */ | |
62 | bp_watchpoint, /* Watchpoint */ | |
63 | bp_hardware_watchpoint, /* Hardware assisted watchpoint */ | |
64 | bp_read_watchpoint, /* read watchpoint, (hardware assisted) */ | |
65 | bp_access_watchpoint, /* access watchpoint, (hardware assisted) */ | |
66 | bp_longjmp, /* secret breakpoint to find longjmp() */ | |
67 | bp_longjmp_resume, /* secret breakpoint to escape longjmp() */ | |
68 | ||
e2e4d78b JK |
69 | /* Breakpoint placed to the same location(s) like bp_longjmp but used to |
70 | protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and | |
71 | one bp_call_dummy are chained together by related_breakpoint for each | |
72 | DUMMY_FRAME. */ | |
73 | bp_longjmp_call_dummy, | |
74 | ||
186c406b TT |
75 | /* An internal breakpoint that is installed on the unwinder's |
76 | debug hook. */ | |
77 | bp_exception, | |
78 | /* An internal breakpoint that is set at the point where an | |
79 | exception will land. */ | |
80 | bp_exception_resume, | |
81 | ||
0e2de366 | 82 | /* Used by wait_for_inferior for stepping over subroutine calls, |
2c03e5be | 83 | and for skipping prologues. */ |
c5aa993b JM |
84 | bp_step_resume, |
85 | ||
2c03e5be PA |
86 | /* Used by wait_for_inferior for stepping over signal |
87 | handlers. */ | |
88 | bp_hp_step_resume, | |
89 | ||
c5aa993b JM |
90 | /* Used to detect when a watchpoint expression has gone out of |
91 | scope. These breakpoints are usually not visible to the user. | |
92 | ||
93 | This breakpoint has some interesting properties: | |
c906108c SS |
94 | |
95 | 1) There's always a 1:1 mapping between watchpoints | |
96 | on local variables and watchpoint_scope breakpoints. | |
97 | ||
98 | 2) It automatically deletes itself and the watchpoint it's | |
99 | associated with when hit. | |
100 | ||
101 | 3) It can never be disabled. */ | |
c5aa993b JM |
102 | bp_watchpoint_scope, |
103 | ||
e2e4d78b JK |
104 | /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it |
105 | is chained with by related_breakpoint. */ | |
c5aa993b JM |
106 | bp_call_dummy, |
107 | ||
aa7d318d TT |
108 | /* A breakpoint set on std::terminate, that is used to catch |
109 | otherwise uncaught exceptions thrown during an inferior call. */ | |
110 | bp_std_terminate, | |
111 | ||
c5aa993b JM |
112 | /* Some dynamic linkers (HP, maybe Solaris) can arrange for special |
113 | code in the inferior to run when significant events occur in the | |
114 | dynamic linker (for example a library is loaded or unloaded). | |
115 | ||
116 | By placing a breakpoint in this magic code GDB will get control | |
117 | when these significant events occur. GDB can then re-examine | |
118 | the dynamic linker's data structures to discover any newly loaded | |
119 | dynamic libraries. */ | |
120 | bp_shlib_event, | |
121 | ||
c4093a6a JM |
122 | /* Some multi-threaded systems can arrange for a location in the |
123 | inferior to be executed when certain thread-related events occur | |
124 | (such as thread creation or thread death). | |
125 | ||
126 | By placing a breakpoint at one of these locations, GDB will get | |
127 | control when these events occur. GDB can then update its thread | |
128 | lists etc. */ | |
129 | ||
130 | bp_thread_event, | |
131 | ||
1900040c MS |
132 | /* On the same principal, an overlay manager can arrange to call a |
133 | magic location in the inferior whenever there is an interesting | |
134 | change in overlay status. GDB can update its overlay tables | |
135 | and fiddle with breakpoints in overlays when this breakpoint | |
136 | is hit. */ | |
137 | ||
138 | bp_overlay_event, | |
139 | ||
0fd8e87f UW |
140 | /* Master copies of longjmp breakpoints. These are always installed |
141 | as soon as an objfile containing longjmp is loaded, but they are | |
142 | always disabled. While necessary, temporary clones of bp_longjmp | |
143 | type will be created and enabled. */ | |
144 | ||
145 | bp_longjmp_master, | |
146 | ||
aa7d318d TT |
147 | /* Master copies of std::terminate breakpoints. */ |
148 | bp_std_terminate_master, | |
149 | ||
186c406b TT |
150 | /* Like bp_longjmp_master, but for exceptions. */ |
151 | bp_exception_master, | |
152 | ||
ce78b96d | 153 | bp_catchpoint, |
1042e4c0 SS |
154 | |
155 | bp_tracepoint, | |
7a697b8d | 156 | bp_fast_tracepoint, |
0fb4aa4b | 157 | bp_static_tracepoint, |
4efc6507 | 158 | |
e7e0cddf SS |
159 | /* A dynamic printf stops at the given location, does a formatted |
160 | print, then automatically continues. (Although this is sort of | |
161 | like a macro packaging up standard breakpoint functionality, | |
162 | GDB doesn't have a way to construct types of breakpoint from | |
163 | elements of behavior.) */ | |
164 | bp_dprintf, | |
165 | ||
4efc6507 DE |
166 | /* Event for JIT compiled code generation or deletion. */ |
167 | bp_jit_event, | |
0e30163f JK |
168 | |
169 | /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB | |
170 | inserts new bp_gnu_ifunc_resolver_return at the caller. | |
171 | bp_gnu_ifunc_resolver is still being kept here as a different thread | |
172 | may still hit it before bp_gnu_ifunc_resolver_return is hit by the | |
173 | original thread. */ | |
174 | bp_gnu_ifunc_resolver, | |
175 | ||
176 | /* On its hit GDB now know the resolved address of the target | |
177 | STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be | |
178 | deleted now and the breakpoint moved to the target function entry | |
179 | point. */ | |
180 | bp_gnu_ifunc_resolver_return, | |
c5aa993b | 181 | }; |
c906108c | 182 | |
0e2de366 | 183 | /* States of enablement of breakpoint. */ |
c906108c | 184 | |
b5de0fa7 | 185 | enum enable_state |
c5aa993b | 186 | { |
0e2de366 MS |
187 | bp_disabled, /* The eventpoint is inactive, and cannot |
188 | trigger. */ | |
189 | bp_enabled, /* The eventpoint is active, and can | |
190 | trigger. */ | |
191 | bp_call_disabled, /* The eventpoint has been disabled while a | |
192 | call into the inferior is "in flight", | |
193 | because some eventpoints interfere with | |
194 | the implementation of a call on some | |
195 | targets. The eventpoint will be | |
196 | automatically enabled and reset when the | |
197 | call "lands" (either completes, or stops | |
198 | at another eventpoint). */ | |
0e2de366 MS |
199 | bp_permanent /* There is a breakpoint instruction |
200 | hard-wired into the target's code. Don't | |
201 | try to write another breakpoint | |
202 | instruction on top of it, or restore its | |
203 | value. Step over it using the | |
204 | architecture's SKIP_INSN macro. */ | |
c5aa993b | 205 | }; |
c906108c SS |
206 | |
207 | ||
0e2de366 | 208 | /* Disposition of breakpoint. Ie: what to do after hitting it. */ |
c906108c | 209 | |
c5aa993b JM |
210 | enum bpdisp |
211 | { | |
b5de0fa7 | 212 | disp_del, /* Delete it */ |
0e2de366 MS |
213 | disp_del_at_next_stop, /* Delete at next stop, |
214 | whether hit or not */ | |
b5de0fa7 EZ |
215 | disp_disable, /* Disable it */ |
216 | disp_donttouch /* Leave it alone */ | |
c5aa993b | 217 | }; |
c906108c | 218 | |
b775012e LM |
219 | /* Status of breakpoint conditions used when synchronizing |
220 | conditions with the target. */ | |
221 | ||
222 | enum condition_status | |
223 | { | |
224 | condition_unchanged = 0, | |
225 | condition_modified, | |
226 | condition_updated | |
227 | }; | |
228 | ||
8181d85f DJ |
229 | /* Information used by targets to insert and remove breakpoints. */ |
230 | ||
231 | struct bp_target_info | |
232 | { | |
6c95b8df PA |
233 | /* Address space at which the breakpoint was placed. */ |
234 | struct address_space *placed_address_space; | |
235 | ||
8181d85f DJ |
236 | /* Address at which the breakpoint was placed. This is normally the |
237 | same as ADDRESS from the bp_location, except when adjustment | |
3b3b875c | 238 | happens in gdbarch_breakpoint_from_pc. The most common form of |
8181d85f DJ |
239 | adjustment is stripping an alternate ISA marker from the PC which |
240 | is used to determine the type of breakpoint to insert. */ | |
241 | CORE_ADDR placed_address; | |
242 | ||
f1310107 TJB |
243 | /* If this is a ranged breakpoint, then this field contains the |
244 | length of the range that will be watched for execution. */ | |
245 | int length; | |
246 | ||
8181d85f DJ |
247 | /* If the breakpoint lives in memory and reading that memory would |
248 | give back the breakpoint, instead of the original contents, then | |
249 | the original contents are cached here. Only SHADOW_LEN bytes of | |
250 | this buffer are valid, and only when the breakpoint is inserted. */ | |
251 | gdb_byte shadow_contents[BREAKPOINT_MAX]; | |
252 | ||
253 | /* The length of the data cached in SHADOW_CONTENTS. */ | |
254 | int shadow_len; | |
255 | ||
256 | /* The size of the placed breakpoint, according to | |
0e2de366 MS |
257 | gdbarch_breakpoint_from_pc, when the breakpoint was inserted. |
258 | This is generally the same as SHADOW_LEN, unless we did not need | |
8181d85f | 259 | to read from the target to implement the memory breakpoint |
0e2de366 MS |
260 | (e.g. if a remote stub handled the details). We may still need |
261 | the size to remove the breakpoint safely. */ | |
8181d85f | 262 | int placed_size; |
b775012e LM |
263 | |
264 | /* Vector of conditions the target should evaluate if it supports target-side | |
265 | breakpoint conditions. */ | |
266 | VEC(agent_expr_p) *conditions; | |
d3ce09f5 SS |
267 | |
268 | /* Vector of commands the target should evaluate if it supports | |
269 | target-side breakpoint commands. */ | |
270 | VEC(agent_expr_p) *tcommands; | |
271 | ||
272 | /* Flag that is true if the breakpoint should be left in place even | |
273 | when GDB is not connected. */ | |
274 | int persist; | |
8181d85f DJ |
275 | }; |
276 | ||
5cab636d DJ |
277 | /* GDB maintains two types of information about each breakpoint (or |
278 | watchpoint, or other related event). The first type corresponds | |
279 | to struct breakpoint; this is a relatively high-level structure | |
280 | which contains the source location(s), stopping conditions, user | |
281 | commands to execute when the breakpoint is hit, and so forth. | |
282 | ||
283 | The second type of information corresponds to struct bp_location. | |
284 | Each breakpoint has one or (eventually) more locations associated | |
285 | with it, which represent target-specific and machine-specific | |
286 | mechanisms for stopping the program. For instance, a watchpoint | |
287 | expression may require multiple hardware watchpoints in order to | |
288 | catch all changes in the value of the expression being watched. */ | |
289 | ||
290 | enum bp_loc_type | |
291 | { | |
292 | bp_loc_software_breakpoint, | |
293 | bp_loc_hardware_breakpoint, | |
294 | bp_loc_hardware_watchpoint, | |
295 | bp_loc_other /* Miscellaneous... */ | |
296 | }; | |
297 | ||
28010a5d PA |
298 | /* This structure is a collection of function pointers that, if |
299 | available, will be called instead of performing the default action | |
300 | for this bp_loc_type. */ | |
301 | ||
302 | struct bp_location_ops | |
303 | { | |
304 | /* Destructor. Releases everything from SELF (but not SELF | |
305 | itself). */ | |
306 | void (*dtor) (struct bp_location *self); | |
307 | }; | |
308 | ||
5cab636d DJ |
309 | struct bp_location |
310 | { | |
0d381245 VP |
311 | /* Chain pointer to the next breakpoint location for |
312 | the same parent breakpoint. */ | |
7cc221ef DJ |
313 | struct bp_location *next; |
314 | ||
28010a5d PA |
315 | /* Methods associated with this location. */ |
316 | const struct bp_location_ops *ops; | |
317 | ||
f431efe5 PA |
318 | /* The reference count. */ |
319 | int refc; | |
320 | ||
5cab636d DJ |
321 | /* Type of this breakpoint location. */ |
322 | enum bp_loc_type loc_type; | |
323 | ||
324 | /* Each breakpoint location must belong to exactly one higher-level | |
f431efe5 PA |
325 | breakpoint. This pointer is NULL iff this bp_location is no |
326 | longer attached to a breakpoint. For example, when a breakpoint | |
327 | is deleted, its locations may still be found in the | |
328 | moribund_locations list, or if we had stopped for it, in | |
329 | bpstats. */ | |
5cab636d DJ |
330 | struct breakpoint *owner; |
331 | ||
60e1c644 PA |
332 | /* Conditional. Break only if this expression's value is nonzero. |
333 | Unlike string form of condition, which is associated with | |
334 | breakpoint, this is associated with location, since if breakpoint | |
335 | has several locations, the evaluation of expression can be | |
336 | different for different locations. Only valid for real | |
337 | breakpoints; a watchpoint's conditional expression is stored in | |
338 | the owner breakpoint object. */ | |
511a6cd4 | 339 | struct expression *cond; |
0d381245 | 340 | |
b775012e LM |
341 | /* Conditional expression in agent expression |
342 | bytecode form. This is used for stub-side breakpoint | |
343 | condition evaluation. */ | |
344 | struct agent_expr *cond_bytecode; | |
345 | ||
346 | /* Signals that the condition has changed since the last time | |
347 | we updated the global location list. This means the condition | |
348 | needs to be sent to the target again. This is used together | |
349 | with target-side breakpoint conditions. | |
350 | ||
351 | condition_unchanged: It means there has been no condition changes. | |
352 | ||
353 | condition_modified: It means this location had its condition modified. | |
354 | ||
355 | condition_updated: It means we already marked all the locations that are | |
356 | duplicates of this location and thus we don't need to call | |
357 | force_breakpoint_reinsertion (...) for this location. */ | |
358 | ||
359 | enum condition_status condition_changed; | |
360 | ||
d3ce09f5 SS |
361 | struct agent_expr *cmd_bytecode; |
362 | ||
363 | /* Signals that breakpoint conditions and/or commands need to be | |
364 | re-synched with the target. This has no use other than | |
365 | target-side breakpoints. */ | |
b775012e LM |
366 | char needs_update; |
367 | ||
0d381245 VP |
368 | /* This location's address is in an unloaded solib, and so this |
369 | location should not be inserted. It will be automatically | |
370 | enabled when that solib is loaded. */ | |
371 | char shlib_disabled; | |
372 | ||
373 | /* Is this particular location enabled. */ | |
374 | char enabled; | |
511a6cd4 | 375 | |
5cab636d DJ |
376 | /* Nonzero if this breakpoint is now inserted. */ |
377 | char inserted; | |
378 | ||
379 | /* Nonzero if this is not the first breakpoint in the list | |
1e4d1764 YQ |
380 | for the given address. location of tracepoint can _never_ |
381 | be duplicated with other locations of tracepoints and other | |
382 | kinds of breakpoints, because two locations at the same | |
383 | address may have different actions, so both of these locations | |
384 | should be downloaded and so that `tfind N' always works. */ | |
5cab636d DJ |
385 | char duplicate; |
386 | ||
387 | /* If we someday support real thread-specific breakpoints, then | |
388 | the breakpoint location will need a thread identifier. */ | |
389 | ||
390 | /* Data for specific breakpoint types. These could be a union, but | |
391 | simplicity is more important than memory usage for breakpoints. */ | |
392 | ||
a6d9a66e UW |
393 | /* Architecture associated with this location's address. May be |
394 | different from the breakpoint architecture. */ | |
395 | struct gdbarch *gdbarch; | |
396 | ||
6c95b8df PA |
397 | /* The program space associated with this breakpoint location |
398 | address. Note that an address space may be represented in more | |
399 | than one program space (e.g. each uClinux program will be given | |
400 | its own program space, but there will only be one address space | |
401 | for all of them), but we must not insert more than one location | |
402 | at the same address in the same address space. */ | |
403 | struct program_space *pspace; | |
404 | ||
5cab636d DJ |
405 | /* Note that zero is a perfectly valid code address on some platforms |
406 | (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL | |
407 | is not a special value for this field. Valid for all types except | |
408 | bp_loc_other. */ | |
409 | CORE_ADDR address; | |
410 | ||
a3be7890 | 411 | /* For hardware watchpoints, the size of the memory region being |
f1310107 TJB |
412 | watched. For hardware ranged breakpoints, the size of the |
413 | breakpoint range. */ | |
a5606eee VP |
414 | int length; |
415 | ||
0e2de366 | 416 | /* Type of hardware watchpoint. */ |
a5606eee VP |
417 | enum target_hw_bp_type watchpoint_type; |
418 | ||
714835d5 | 419 | /* For any breakpoint type with an address, this is the section |
0e2de366 MS |
420 | associated with the address. Used primarily for overlay |
421 | debugging. */ | |
714835d5 | 422 | struct obj_section *section; |
cf3a9e5b | 423 | |
5cab636d DJ |
424 | /* Address at which breakpoint was requested, either by the user or |
425 | by GDB for internal breakpoints. This will usually be the same | |
426 | as ``address'' (above) except for cases in which | |
427 | ADJUST_BREAKPOINT_ADDRESS has computed a different address at | |
428 | which to place the breakpoint in order to comply with a | |
429 | processor's architectual constraints. */ | |
430 | CORE_ADDR requested_address; | |
8181d85f | 431 | |
6a3a010b MR |
432 | /* An additional address assigned with this location. This is currently |
433 | only used by STT_GNU_IFUNC resolver breakpoints to hold the address | |
434 | of the resolver function. */ | |
435 | CORE_ADDR related_address; | |
436 | ||
55aa24fb SDJ |
437 | /* If the location comes from a probe point, this is the probe associated |
438 | with it. */ | |
439 | struct probe *probe; | |
440 | ||
0d381245 VP |
441 | char *function_name; |
442 | ||
8181d85f DJ |
443 | /* Details of the placed breakpoint, when inserted. */ |
444 | struct bp_target_info target_info; | |
445 | ||
446 | /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */ | |
447 | struct bp_target_info overlay_target_info; | |
20874c92 VP |
448 | |
449 | /* In a non-stop mode, it's possible that we delete a breakpoint, | |
450 | but as we do that, some still running thread hits that breakpoint. | |
451 | For that reason, we need to keep locations belonging to deleted | |
452 | breakpoints for a bit, so that don't report unexpected SIGTRAP. | |
453 | We can't keep such locations forever, so we use a heuristic -- | |
454 | after we process certain number of inferior events since | |
455 | breakpoint was deleted, we retire all locations of that breakpoint. | |
456 | This variable keeps a number of events still to go, when | |
457 | it becomes 0 this location is retired. */ | |
458 | int events_till_retirement; | |
f8eba3c6 | 459 | |
2f202fde JK |
460 | /* Line number which was used to place this location. |
461 | ||
462 | Breakpoint placed into a comment keeps it's user specified line number | |
463 | despite ADDRESS resolves into a different line number. */ | |
f8eba3c6 TT |
464 | |
465 | int line_number; | |
466 | ||
2f202fde JK |
467 | /* Symtab which was used to place this location. This is used |
468 | to find the corresponding source file name. */ | |
f8eba3c6 | 469 | |
2f202fde | 470 | struct symtab *symtab; |
5cab636d DJ |
471 | }; |
472 | ||
3086aeae DJ |
473 | /* This structure is a collection of function pointers that, if available, |
474 | will be called instead of the performing the default action for this | |
475 | bptype. */ | |
476 | ||
77b06cd7 | 477 | struct breakpoint_ops |
3086aeae | 478 | { |
be5c67c1 PA |
479 | /* Destructor. Releases everything from SELF (but not SELF |
480 | itself). */ | |
481 | void (*dtor) (struct breakpoint *self); | |
482 | ||
28010a5d PA |
483 | /* Allocate a location for this breakpoint. */ |
484 | struct bp_location * (*allocate_location) (struct breakpoint *); | |
485 | ||
486 | /* Reevaluate a breakpoint. This is necessary after symbols change | |
487 | (e.g., an executable or DSO was loaded, or the inferior just | |
488 | started). */ | |
489 | void (*re_set) (struct breakpoint *self); | |
490 | ||
77b06cd7 | 491 | /* Insert the breakpoint or watchpoint or activate the catchpoint. |
348d480f PA |
492 | Return 0 for success, 1 if the breakpoint, watchpoint or |
493 | catchpoint type is not supported, -1 for failure. */ | |
77b06cd7 | 494 | int (*insert_location) (struct bp_location *); |
ce78b96d JB |
495 | |
496 | /* Remove the breakpoint/catchpoint that was previously inserted | |
77b06cd7 TJB |
497 | with the "insert" method above. Return 0 for success, 1 if the |
498 | breakpoint, watchpoint or catchpoint type is not supported, | |
499 | -1 for failure. */ | |
500 | int (*remove_location) (struct bp_location *); | |
ce78b96d | 501 | |
28010a5d PA |
502 | /* Return true if it the target has stopped due to hitting |
503 | breakpoint location BL. This function does not check if we | |
09ac7c10 TT |
504 | should stop, only if BL explains the stop. ASPACE is the address |
505 | space in which the event occurred, BP_ADDR is the address at | |
506 | which the inferior stopped, and WS is the target_waitstatus | |
507 | describing the event. */ | |
508 | int (*breakpoint_hit) (const struct bp_location *bl, | |
509 | struct address_space *aspace, | |
510 | CORE_ADDR bp_addr, | |
511 | const struct target_waitstatus *ws); | |
ce78b96d | 512 | |
28010a5d PA |
513 | /* Check internal conditions of the breakpoint referred to by BS. |
514 | If we should not stop for this breakpoint, set BS->stop to 0. */ | |
515 | void (*check_status) (struct bpstats *bs); | |
516 | ||
e09342b5 TJB |
517 | /* Tell how many hardware resources (debug registers) are needed |
518 | for this breakpoint. If this function is not provided, then | |
519 | the breakpoint or watchpoint needs one debug register. */ | |
520 | int (*resources_needed) (const struct bp_location *); | |
521 | ||
9c06b0b4 TJB |
522 | /* Tell whether we can downgrade from a hardware watchpoint to a software |
523 | one. If not, the user will not be able to enable the watchpoint when | |
524 | there are not enough hardware resources available. */ | |
525 | int (*works_in_software_mode) (const struct breakpoint *); | |
526 | ||
3086aeae DJ |
527 | /* The normal print routine for this breakpoint, called when we |
528 | hit it. */ | |
348d480f | 529 | enum print_stop_action (*print_it) (struct bpstats *bs); |
3086aeae | 530 | |
0e2de366 MS |
531 | /* Display information about this breakpoint, for "info |
532 | breakpoints". */ | |
a6d9a66e | 533 | void (*print_one) (struct breakpoint *, struct bp_location **); |
3086aeae | 534 | |
f1310107 TJB |
535 | /* Display extra information about this breakpoint, below the normal |
536 | breakpoint description in "info breakpoints". | |
537 | ||
538 | In the example below, the "address range" line was printed | |
539 | by print_one_detail_ranged_breakpoint. | |
540 | ||
541 | (gdb) info breakpoints | |
542 | Num Type Disp Enb Address What | |
543 | 2 hw breakpoint keep y in main at test-watch.c:70 | |
544 | address range: [0x10000458, 0x100004c7] | |
545 | ||
546 | */ | |
547 | void (*print_one_detail) (const struct breakpoint *, struct ui_out *); | |
548 | ||
0e2de366 MS |
549 | /* Display information about this breakpoint after setting it |
550 | (roughly speaking; this is called from "mention"). */ | |
3086aeae | 551 | void (*print_mention) (struct breakpoint *); |
6149aea9 PA |
552 | |
553 | /* Print to FP the CLI command that recreates this breakpoint. */ | |
554 | void (*print_recreate) (struct breakpoint *, struct ui_file *fp); | |
983af33b SDJ |
555 | |
556 | /* Create SALs from address string, storing the result in linespec_result. | |
557 | ||
558 | For an explanation about the arguments, see the function | |
559 | `create_sals_from_address_default'. | |
560 | ||
561 | This function is called inside `create_breakpoint'. */ | |
562 | void (*create_sals_from_address) (char **, struct linespec_result *, | |
563 | enum bptype, char *, char **); | |
564 | ||
565 | /* This method will be responsible for creating a breakpoint given its SALs. | |
566 | Usually, it just calls `create_breakpoints_sal' (for ordinary | |
567 | breakpoints). However, there may be some special cases where we might | |
568 | need to do some tweaks, e.g., see | |
569 | `strace_marker_create_breakpoints_sal'. | |
570 | ||
571 | This function is called inside `create_breakpoint'. */ | |
572 | void (*create_breakpoints_sal) (struct gdbarch *, | |
573 | struct linespec_result *, | |
52d361e1 | 574 | char *, char *, |
983af33b SDJ |
575 | enum bptype, enum bpdisp, int, int, |
576 | int, const struct breakpoint_ops *, | |
44f238bb | 577 | int, int, int, unsigned); |
983af33b SDJ |
578 | |
579 | /* Given the address string (second parameter), this method decodes it | |
580 | and provides the SAL locations related to it. For ordinary breakpoints, | |
581 | it calls `decode_line_full'. | |
582 | ||
583 | This function is called inside `addr_string_to_sals'. */ | |
584 | void (*decode_linespec) (struct breakpoint *, char **, | |
585 | struct symtabs_and_lines *); | |
ab04a2af | 586 | |
47591c29 | 587 | /* Return true if this breakpoint explains a signal. See |
ab04a2af | 588 | bpstat_explains_signal. */ |
47591c29 | 589 | int (*explains_signal) (struct breakpoint *, enum gdb_signal); |
9d6e6e84 HZ |
590 | |
591 | /* Called after evaluating the breakpoint's condition, | |
592 | and only if it evaluated true. */ | |
593 | void (*after_condition_true) (struct bpstats *bs); | |
3086aeae DJ |
594 | }; |
595 | ||
d9b3f62e PA |
596 | /* Helper for breakpoint_ops->print_recreate implementations. Prints |
597 | the "thread" or "task" condition of B, and then a newline. | |
598 | ||
599 | Necessary because most breakpoint implementations accept | |
600 | thread/task conditions at the end of the spec line, like "break foo | |
601 | thread 1", which needs outputting before any breakpoint-type | |
602 | specific extra command necessary for B's recreation. */ | |
603 | extern void print_recreate_thread (struct breakpoint *b, struct ui_file *fp); | |
604 | ||
d983da9c DJ |
605 | enum watchpoint_triggered |
606 | { | |
607 | /* This watchpoint definitely did not trigger. */ | |
608 | watch_triggered_no = 0, | |
609 | ||
610 | /* Some hardware watchpoint triggered, and it might have been this | |
611 | one, but we do not know which it was. */ | |
612 | watch_triggered_unknown, | |
613 | ||
614 | /* This hardware watchpoint definitely did trigger. */ | |
615 | watch_triggered_yes | |
616 | }; | |
617 | ||
74960c60 VP |
618 | typedef struct bp_location *bp_location_p; |
619 | DEF_VEC_P(bp_location_p); | |
620 | ||
9add0f1b | 621 | /* A reference-counted struct command_line. This lets multiple |
5cea2a26 PA |
622 | breakpoints share a single command list. This is an implementation |
623 | detail to the breakpoints module. */ | |
624 | struct counted_command_line; | |
9add0f1b | 625 | |
e09342b5 TJB |
626 | /* Some targets (e.g., embedded PowerPC) need two debug registers to set |
627 | a watchpoint over a memory region. If this flag is true, GDB will use | |
628 | only one register per watchpoint, thus assuming that all acesses that | |
629 | modify a memory location happen at its starting address. */ | |
630 | ||
631 | extern int target_exact_watchpoints; | |
632 | ||
c906108c SS |
633 | /* Note that the ->silent field is not currently used by any commands |
634 | (though the code is in there if it was to be, and set_raw_breakpoint | |
635 | does set it to 0). I implemented it because I thought it would be | |
636 | useful for a hack I had to put in; I'm going to leave it in because | |
637 | I can see how there might be times when it would indeed be useful */ | |
638 | ||
3a5c3e22 | 639 | /* This is for all kinds of breakpoints. */ |
c906108c SS |
640 | |
641 | struct breakpoint | |
c5aa993b | 642 | { |
3a5c3e22 | 643 | /* Methods associated with this breakpoint. */ |
c0a91b2b | 644 | const struct breakpoint_ops *ops; |
3a5c3e22 | 645 | |
c5aa993b | 646 | struct breakpoint *next; |
0e2de366 | 647 | /* Type of breakpoint. */ |
c5aa993b JM |
648 | enum bptype type; |
649 | /* Zero means disabled; remember the info but don't break here. */ | |
b5de0fa7 | 650 | enum enable_state enable_state; |
0e2de366 | 651 | /* What to do with this breakpoint after we hit it. */ |
c5aa993b JM |
652 | enum bpdisp disposition; |
653 | /* Number assigned to distinguish breakpoints. */ | |
654 | int number; | |
655 | ||
5cab636d DJ |
656 | /* Location(s) associated with this high-level breakpoint. */ |
657 | struct bp_location *loc; | |
76897487 | 658 | |
c5aa993b | 659 | /* Non-zero means a silent breakpoint (don't print frame info |
0e2de366 | 660 | if we stop here). */ |
c5aa993b | 661 | unsigned char silent; |
56435ebe TT |
662 | /* Non-zero means display ADDR_STRING to the user verbatim. */ |
663 | unsigned char display_canonical; | |
c5aa993b JM |
664 | /* Number of stops at this breakpoint that should |
665 | be continued automatically before really stopping. */ | |
666 | int ignore_count; | |
816338b5 SS |
667 | |
668 | /* Number of stops at this breakpoint before it will be | |
669 | disabled. */ | |
670 | int enable_count; | |
671 | ||
0e2de366 MS |
672 | /* Chain of command lines to execute when this breakpoint is |
673 | hit. */ | |
9add0f1b | 674 | struct counted_command_line *commands; |
c5aa993b JM |
675 | /* Stack depth (address of frame). If nonzero, break only if fp |
676 | equals this. */ | |
818dd999 | 677 | struct frame_id frame_id; |
c5aa993b | 678 | |
f8eba3c6 TT |
679 | /* The program space used to set the breakpoint. This is only set |
680 | for breakpoints which are specific to a program space; for | |
cc72b2a2 | 681 | non-thread-specific ordinary breakpoints this is NULL. */ |
6c95b8df PA |
682 | struct program_space *pspace; |
683 | ||
644a1fe1 | 684 | /* String we used to set the breakpoint (malloc'd). */ |
c5aa993b | 685 | char *addr_string; |
f1310107 | 686 | |
f8eba3c6 TT |
687 | /* The filter that should be passed to decode_line_full when |
688 | re-setting this breakpoint. This may be NULL, but otherwise is | |
689 | allocated with xmalloc. */ | |
690 | char *filter; | |
691 | ||
f1310107 TJB |
692 | /* For a ranged breakpoint, the string we used to find |
693 | the end of the range (malloc'd). */ | |
694 | char *addr_string_range_end; | |
695 | ||
a6d9a66e UW |
696 | /* Architecture we used to set the breakpoint. */ |
697 | struct gdbarch *gdbarch; | |
c5aa993b JM |
698 | /* Language we used to set the breakpoint. */ |
699 | enum language language; | |
700 | /* Input radix we used to set the breakpoint. */ | |
701 | int input_radix; | |
0e2de366 MS |
702 | /* String form of the breakpoint condition (malloc'd), or NULL if |
703 | there is no condition. */ | |
c5aa993b | 704 | char *cond_string; |
e7e0cddf | 705 | |
fb81d016 KS |
706 | /* String form of extra parameters, or NULL if there are none. |
707 | Malloc'd. */ | |
e7e0cddf | 708 | char *extra_string; |
c5aa993b | 709 | |
c5aa993b | 710 | /* Holds the address of the related watchpoint_scope breakpoint |
0e2de366 MS |
711 | when using watchpoints on local variables (might the concept of |
712 | a related breakpoint be useful elsewhere, if not just call it | |
713 | the watchpoint_scope breakpoint or something like that. | |
714 | FIXME). */ | |
c5aa993b JM |
715 | struct breakpoint *related_breakpoint; |
716 | ||
0e2de366 MS |
717 | /* Thread number for thread-specific breakpoint, |
718 | or -1 if don't care. */ | |
c5aa993b JM |
719 | int thread; |
720 | ||
0e2de366 MS |
721 | /* Ada task number for task-specific breakpoint, |
722 | or 0 if don't care. */ | |
4a306c9a JB |
723 | int task; |
724 | ||
c5aa993b JM |
725 | /* Count of the number of times this breakpoint was taken, dumped |
726 | with the info, but not used for anything else. Useful for | |
727 | seeing how many times you hit a break prior to the program | |
728 | aborting, so you can back up to just before the abort. */ | |
729 | int hit_count; | |
730 | ||
0d381245 VP |
731 | /* Is breakpoint's condition not yet parsed because we found |
732 | no location initially so had no context to parse | |
733 | the condition in. */ | |
734 | int condition_not_parsed; | |
1042e4c0 | 735 | |
84f4c1fe PM |
736 | /* With a Python scripting enabled GDB, store a reference to the |
737 | Python object that has been associated with this breakpoint. | |
738 | This is always NULL for a GDB that is not script enabled. It | |
739 | can sometimes be NULL for enabled GDBs as not all breakpoint | |
4cb0213d DE |
740 | types are tracked by the scripting language API. */ |
741 | struct gdbpy_breakpoint_object *py_bp_object; | |
3a5c3e22 | 742 | }; |
e09342b5 | 743 | |
3a5c3e22 PA |
744 | /* An instance of this type is used to represent a watchpoint. It |
745 | includes a "struct breakpoint" as a kind of base class; users | |
746 | downcast to "struct breakpoint *" when needed. */ | |
9c06b0b4 | 747 | |
3a5c3e22 PA |
748 | struct watchpoint |
749 | { | |
750 | /* The base class. */ | |
751 | struct breakpoint base; | |
752 | ||
753 | /* String form of exp to use for displaying to the user (malloc'd), | |
754 | or NULL if none. */ | |
755 | char *exp_string; | |
756 | /* String form to use for reparsing of EXP (malloc'd) or NULL. */ | |
757 | char *exp_string_reparse; | |
758 | ||
759 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
760 | struct expression *exp; | |
761 | /* The largest block within which it is valid, or NULL if it is | |
762 | valid anywhere (e.g. consists just of global symbols). */ | |
270140bd | 763 | const struct block *exp_valid_block; |
3a5c3e22 PA |
764 | /* The conditional expression if any. */ |
765 | struct expression *cond_exp; | |
766 | /* The largest block within which it is valid, or NULL if it is | |
767 | valid anywhere (e.g. consists just of global symbols). */ | |
270140bd | 768 | const struct block *cond_exp_valid_block; |
3a5c3e22 PA |
769 | /* Value of the watchpoint the last time we checked it, or NULL when |
770 | we do not know the value yet or the value was not readable. VAL | |
771 | is never lazy. */ | |
772 | struct value *val; | |
773 | /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL, | |
774 | then an error occurred reading the value. */ | |
775 | int val_valid; | |
776 | ||
777 | /* Holds the frame address which identifies the frame this | |
778 | watchpoint should be evaluated in, or `null' if the watchpoint | |
779 | should be evaluated on the outermost frame. */ | |
780 | struct frame_id watchpoint_frame; | |
781 | ||
782 | /* Holds the thread which identifies the frame this watchpoint | |
783 | should be considered in scope for, or `null_ptid' if the | |
784 | watchpoint should be evaluated in all threads. */ | |
785 | ptid_t watchpoint_thread; | |
786 | ||
787 | /* For hardware watchpoints, the triggered status according to the | |
788 | hardware. */ | |
789 | enum watchpoint_triggered watchpoint_triggered; | |
790 | ||
791 | /* Whether this watchpoint is exact (see | |
792 | target_exact_watchpoints). */ | |
793 | int exact; | |
794 | ||
795 | /* The mask address for a masked hardware watchpoint. */ | |
796 | CORE_ADDR hw_wp_mask; | |
797 | }; | |
798 | ||
b775012e LM |
799 | /* Return true if BPT is either a software breakpoint or a hardware |
800 | breakpoint. */ | |
801 | ||
802 | extern int is_breakpoint (const struct breakpoint *bpt); | |
803 | ||
3a5c3e22 PA |
804 | /* Returns true if BPT is really a watchpoint. */ |
805 | ||
806 | extern int is_watchpoint (const struct breakpoint *bpt); | |
d6e956e5 | 807 | |
d9b3f62e PA |
808 | /* An instance of this type is used to represent all kinds of |
809 | tracepoints. It includes a "struct breakpoint" as a kind of base | |
810 | class; users downcast to "struct breakpoint *" when needed. */ | |
811 | ||
812 | struct tracepoint | |
813 | { | |
814 | /* The base class. */ | |
815 | struct breakpoint base; | |
816 | ||
817 | /* Number of times this tracepoint should single-step and collect | |
818 | additional data. */ | |
819 | long step_count; | |
820 | ||
821 | /* Number of times this tracepoint should be hit before | |
822 | disabling/ending. */ | |
823 | int pass_count; | |
824 | ||
825 | /* The number of the tracepoint on the target. */ | |
826 | int number_on_target; | |
827 | ||
f196051f SS |
828 | /* The total space taken by all the trace frames for this |
829 | tracepoint. */ | |
830 | ULONGEST traceframe_usage; | |
831 | ||
d9b3f62e PA |
832 | /* The static tracepoint marker id, if known. */ |
833 | char *static_trace_marker_id; | |
834 | ||
835 | /* LTTng/UST allow more than one marker with the same ID string, | |
836 | although it unadvised because it confuses tools. When setting | |
837 | static tracepoints by marker ID, this will record the index in | |
838 | the array of markers we found for the given marker ID for which | |
839 | this static tracepoint corresponds. When resetting breakpoints, | |
840 | we will use this index to try to find the same marker again. */ | |
841 | int static_trace_marker_id_idx; | |
842 | }; | |
843 | ||
d6e956e5 VP |
844 | typedef struct breakpoint *breakpoint_p; |
845 | DEF_VEC_P(breakpoint_p); | |
c906108c | 846 | \f |
53a5351d JM |
847 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
848 | status"). This provides the ability to determine whether we have | |
849 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
850 | |
851 | typedef struct bpstats *bpstat; | |
852 | ||
198757a8 VP |
853 | /* Clears a chain of bpstat, freeing storage |
854 | of each. */ | |
a14ed312 | 855 | extern void bpstat_clear (bpstat *); |
c906108c SS |
856 | |
857 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
858 | is part of the bpstat is copied as well. */ | |
a14ed312 | 859 | extern bpstat bpstat_copy (bpstat); |
c906108c | 860 | |
6c95b8df | 861 | extern bpstat bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
862 | CORE_ADDR pc, ptid_t ptid, |
863 | const struct target_waitstatus *ws); | |
c906108c SS |
864 | \f |
865 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
628fe4e4 JK |
866 | breakpoint (a challenging task). |
867 | ||
868 | The enum values order defines priority-like order of the actions. | |
869 | Once you've decided that some action is appropriate, you'll never | |
870 | go back and decide something of a lower priority is better. Each | |
871 | of these actions is mutually exclusive with the others. That | |
872 | means, that if you find yourself adding a new action class here and | |
873 | wanting to tell GDB that you have two simultaneous actions to | |
874 | handle, something is wrong, and you probably don't actually need a | |
875 | new action type. | |
876 | ||
877 | Note that a step resume breakpoint overrides another breakpoint of | |
878 | signal handling (see comment in wait_for_inferior at where we set | |
879 | the step_resume breakpoint). */ | |
c906108c | 880 | |
c5aa993b JM |
881 | enum bpstat_what_main_action |
882 | { | |
883 | /* Perform various other tests; that is, this bpstat does not | |
884 | say to perform any action (e.g. failed watchpoint and nothing | |
885 | else). */ | |
886 | BPSTAT_WHAT_KEEP_CHECKING, | |
887 | ||
c5aa993b | 888 | /* Remove breakpoints, single step once, then put them back in and |
0e2de366 MS |
889 | go back to what we were doing. It's possible that this should |
890 | be removed from the main_action and put into a separate field, | |
891 | to more cleanly handle | |
892 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
c5aa993b JM |
893 | BPSTAT_WHAT_SINGLE, |
894 | ||
895 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
0e2de366 MS |
896 | and continue. The "remove all other breakpoints" part is |
897 | required if we are also stepping over another breakpoint as | |
898 | well as doing the longjmp handling. */ | |
c5aa993b JM |
899 | BPSTAT_WHAT_SET_LONGJMP_RESUME, |
900 | ||
901 | /* Clear longjmp_resume breakpoint, then handle as | |
902 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
903 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
904 | ||
2c03e5be PA |
905 | /* Clear step resume breakpoint, and keep checking. */ |
906 | BPSTAT_WHAT_STEP_RESUME, | |
907 | ||
628fe4e4 JK |
908 | /* Rather than distinguish between noisy and silent stops here, it |
909 | might be cleaner to have bpstat_print make that decision (also | |
910 | taking into account stop_print_frame and source_only). But the | |
0e2de366 MS |
911 | implications are a bit scary (interaction with auto-displays, |
912 | etc.), so I won't try it. */ | |
c5aa993b | 913 | |
628fe4e4 JK |
914 | /* Stop silently. */ |
915 | BPSTAT_WHAT_STOP_SILENT, | |
c5aa993b | 916 | |
628fe4e4 JK |
917 | /* Stop and print. */ |
918 | BPSTAT_WHAT_STOP_NOISY, | |
4efc6507 | 919 | |
2c03e5be PA |
920 | /* Clear step resume breakpoint, and keep checking. High-priority |
921 | step-resume breakpoints are used when even if there's a user | |
922 | breakpoint at the current PC when we set the step-resume | |
923 | breakpoint, we don't want to re-handle any breakpoint other | |
924 | than the step-resume when it's hit; instead we want to move | |
925 | past the breakpoint. This is used in the case of skipping | |
926 | signal handlers. */ | |
927 | BPSTAT_WHAT_HP_STEP_RESUME, | |
c5aa993b JM |
928 | }; |
929 | ||
aa7d318d TT |
930 | /* An enum indicating the kind of "stack dummy" stop. This is a bit |
931 | of a misnomer because only one kind of truly a stack dummy. */ | |
932 | enum stop_stack_kind | |
933 | { | |
934 | /* We didn't stop at a stack dummy breakpoint. */ | |
935 | STOP_NONE = 0, | |
936 | ||
937 | /* Stopped at a stack dummy. */ | |
938 | STOP_STACK_DUMMY, | |
939 | ||
940 | /* Stopped at std::terminate. */ | |
941 | STOP_STD_TERMINATE | |
942 | }; | |
943 | ||
c5aa993b JM |
944 | struct bpstat_what |
945 | { | |
946 | enum bpstat_what_main_action main_action; | |
947 | ||
0e2de366 MS |
948 | /* Did we hit a call dummy breakpoint? This only goes with a |
949 | main_action of BPSTAT_WHAT_STOP_SILENT or | |
950 | BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call | |
951 | dummy without popping the frame is not a useful one). */ | |
aa7d318d | 952 | enum stop_stack_kind call_dummy; |
186c406b TT |
953 | |
954 | /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and | |
955 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a | |
956 | longjmp, false if we are handling an exception. */ | |
957 | int is_longjmp; | |
c5aa993b | 958 | }; |
c906108c | 959 | |
5c44784c | 960 | /* The possible return values for print_bpstat, print_it_normal, |
0e2de366 | 961 | print_it_done, print_it_noop. */ |
5c44784c JM |
962 | enum print_stop_action |
963 | { | |
348d480f | 964 | /* We printed nothing or we need to do some more analysis. */ |
5c44784c | 965 | PRINT_UNKNOWN = -1, |
348d480f PA |
966 | |
967 | /* We printed something, and we *do* desire that something to be | |
968 | followed by a location. */ | |
5c44784c | 969 | PRINT_SRC_AND_LOC, |
348d480f PA |
970 | |
971 | /* We printed something, and we do *not* desire that something to | |
972 | be followed by a location. */ | |
5c44784c | 973 | PRINT_SRC_ONLY, |
348d480f PA |
974 | |
975 | /* We already printed all we needed to print, don't print anything | |
976 | else. */ | |
5c44784c JM |
977 | PRINT_NOTHING |
978 | }; | |
979 | ||
c906108c | 980 | /* Tell what to do about this bpstat. */ |
a14ed312 | 981 | struct bpstat_what bpstat_what (bpstat); |
c906108c | 982 | \f |
0e2de366 | 983 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ |
a14ed312 | 984 | bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *); |
c906108c | 985 | |
47591c29 PA |
986 | /* Nonzero if a signal that we got in target_wait() was due to |
987 | circumstances explained by the bpstat; the signal is therefore not | |
988 | random. */ | |
989 | extern int bpstat_explains_signal (bpstat, enum gdb_signal); | |
c906108c | 990 | |
67822962 PA |
991 | /* Nonzero is this bpstat causes a stop. */ |
992 | extern int bpstat_causes_stop (bpstat); | |
993 | ||
c906108c SS |
994 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
995 | without hardware support). This isn't related to a specific bpstat, | |
996 | just to things like whether watchpoints are set. */ | |
a14ed312 | 997 | extern int bpstat_should_step (void); |
c906108c | 998 | |
c906108c SS |
999 | /* Print a message indicating what happened. Returns nonzero to |
1000 | say that only the source line should be printed after this (zero | |
1001 | return means print the frame as well as the source line). */ | |
36dfb11c | 1002 | extern enum print_stop_action bpstat_print (bpstat, int); |
c906108c | 1003 | |
0e2de366 MS |
1004 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
1005 | stopped at. *BSP upon return is a bpstat which points to the | |
1006 | remaining breakpoints stopped at (but which is not guaranteed to be | |
1007 | good for anything but further calls to bpstat_num). | |
1008 | ||
8671a17b PA |
1009 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
1010 | Return -1 if stopped at a breakpoint that has been deleted since | |
1011 | we set it. | |
1012 | Return 1 otherwise. */ | |
1013 | extern int bpstat_num (bpstat *, int *); | |
c906108c | 1014 | |
347bddb7 PA |
1015 | /* Perform actions associated with the stopped inferior. Actually, we |
1016 | just use this for breakpoint commands. Perhaps other actions will | |
1017 | go here later, but this is executed at a late time (from the | |
1018 | command loop). */ | |
1019 | extern void bpstat_do_actions (void); | |
c906108c | 1020 | |
e93ca019 JK |
1021 | /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will |
1022 | not be performed. */ | |
1023 | extern void bpstat_clear_actions (void); | |
c906108c | 1024 | |
c906108c | 1025 | /* Implementation: */ |
e514a9d6 | 1026 | |
0e2de366 MS |
1027 | /* Values used to tell the printing routine how to behave for this |
1028 | bpstat. */ | |
e514a9d6 JM |
1029 | enum bp_print_how |
1030 | { | |
1031 | /* This is used when we want to do a normal printing of the reason | |
0e2de366 MS |
1032 | for stopping. The output will depend on the type of eventpoint |
1033 | we are dealing with. This is the default value, most commonly | |
1034 | used. */ | |
e514a9d6 | 1035 | print_it_normal, |
0e2de366 MS |
1036 | /* This is used when nothing should be printed for this bpstat |
1037 | entry. */ | |
e514a9d6 JM |
1038 | print_it_noop, |
1039 | /* This is used when everything which needs to be printed has | |
1040 | already been printed. But we still want to print the frame. */ | |
1041 | print_it_done | |
1042 | }; | |
1043 | ||
c906108c | 1044 | struct bpstats |
c5aa993b | 1045 | { |
f431efe5 PA |
1046 | /* Linked list because there can be more than one breakpoint at |
1047 | the same place, and a bpstat reflects the fact that all have | |
1048 | been hit. */ | |
c5aa993b | 1049 | bpstat next; |
f431efe5 PA |
1050 | |
1051 | /* Location that caused the stop. Locations are refcounted, so | |
1052 | this will never be NULL. Note that this location may end up | |
1053 | detached from a breakpoint, but that does not necessary mean | |
1054 | that the struct breakpoint is gone. E.g., consider a | |
1055 | watchpoint with a condition that involves an inferior function | |
1056 | call. Watchpoint locations are recreated often (on resumes, | |
1057 | hence on infcalls too). Between creating the bpstat and after | |
1058 | evaluating the watchpoint condition, this location may hence | |
1059 | end up detached from its original owner watchpoint, even though | |
1060 | the watchpoint is still listed. If it's condition evaluates as | |
1061 | true, we still want this location to cause a stop, and we will | |
1062 | still need to know which watchpoint it was originally attached. | |
1063 | What this means is that we should not (in most cases) follow | |
1064 | the `bpstat->bp_location->owner' link, but instead use the | |
1065 | `breakpoint_at' field below. */ | |
1066 | struct bp_location *bp_location_at; | |
1067 | ||
1068 | /* Breakpoint that caused the stop. This is nullified if the | |
1069 | breakpoint ends up being deleted. See comments on | |
1070 | `bp_location_at' above for why do we need this field instead of | |
1071 | following the location's owner. */ | |
1072 | struct breakpoint *breakpoint_at; | |
1073 | ||
9add0f1b TT |
1074 | /* The associated command list. */ |
1075 | struct counted_command_line *commands; | |
f431efe5 | 1076 | |
c5aa993b | 1077 | /* Old value associated with a watchpoint. */ |
278cd55f | 1078 | struct value *old_val; |
c5aa993b JM |
1079 | |
1080 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
1081 | char print; | |
1082 | ||
1083 | /* Nonzero if this breakpoint tells us to stop. */ | |
1084 | char stop; | |
1085 | ||
e514a9d6 JM |
1086 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
1087 | associated with this element of the bpstat chain. */ | |
1088 | enum bp_print_how print_it; | |
c5aa993b | 1089 | }; |
c906108c SS |
1090 | |
1091 | enum inf_context | |
c5aa993b JM |
1092 | { |
1093 | inf_starting, | |
1094 | inf_running, | |
6ca15a4b PA |
1095 | inf_exited, |
1096 | inf_execd | |
c5aa993b | 1097 | }; |
c2c6d25f JM |
1098 | |
1099 | /* The possible return values for breakpoint_here_p. | |
1100 | We guarantee that zero always means "no breakpoint here". */ | |
1101 | enum breakpoint_here | |
1102 | { | |
1103 | no_breakpoint_here = 0, | |
1104 | ordinary_breakpoint_here, | |
1105 | permanent_breakpoint_here | |
1106 | }; | |
c906108c | 1107 | \f |
c5aa993b | 1108 | |
c906108c SS |
1109 | /* Prototypes for breakpoint-related functions. */ |
1110 | ||
0e2de366 MS |
1111 | extern enum breakpoint_here breakpoint_here_p (struct address_space *, |
1112 | CORE_ADDR); | |
c906108c | 1113 | |
6c95b8df | 1114 | extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR); |
1c5cfe86 | 1115 | |
6c95b8df | 1116 | extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c906108c | 1117 | |
0e2de366 MS |
1118 | extern int regular_breakpoint_inserted_here_p (struct address_space *, |
1119 | CORE_ADDR); | |
c36b740a | 1120 | |
0e2de366 MS |
1121 | extern int software_breakpoint_inserted_here_p (struct address_space *, |
1122 | CORE_ADDR); | |
4fa8626c | 1123 | |
9093389c PA |
1124 | /* Returns true if there's a hardware watchpoint or access watchpoint |
1125 | inserted in the range defined by ADDR and LEN. */ | |
1126 | extern int hardware_watchpoint_inserted_in_range (struct address_space *, | |
1127 | CORE_ADDR addr, | |
1128 | ULONGEST len); | |
1129 | ||
0e2de366 MS |
1130 | extern int breakpoint_thread_match (struct address_space *, |
1131 | CORE_ADDR, ptid_t); | |
c906108c | 1132 | |
ae66c1fc | 1133 | extern void until_break_command (char *, int, int); |
c906108c | 1134 | |
28010a5d PA |
1135 | /* Initialize a struct bp_location. */ |
1136 | ||
1137 | extern void init_bp_location (struct bp_location *loc, | |
1138 | const struct bp_location_ops *ops, | |
1139 | struct breakpoint *owner); | |
1140 | ||
0e30163f | 1141 | extern void update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
1142 | struct symtabs_and_lines sals, |
1143 | struct symtabs_and_lines sals_end); | |
0e30163f | 1144 | |
a14ed312 | 1145 | extern void breakpoint_re_set (void); |
69de3c6a | 1146 | |
a14ed312 | 1147 | extern void breakpoint_re_set_thread (struct breakpoint *); |
c906108c | 1148 | |
c906108c | 1149 | extern struct breakpoint *set_momentary_breakpoint |
a6d9a66e | 1150 | (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype); |
c906108c | 1151 | |
611c83ae | 1152 | extern struct breakpoint *set_momentary_breakpoint_at_pc |
a6d9a66e | 1153 | (struct gdbarch *, CORE_ADDR pc, enum bptype type); |
611c83ae | 1154 | |
e58b0e63 PA |
1155 | extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); |
1156 | ||
a14ed312 | 1157 | extern void set_ignore_count (int, int, int); |
c906108c | 1158 | |
a14ed312 | 1159 | extern void breakpoint_init_inferior (enum inf_context); |
c906108c | 1160 | |
4d6140d9 AC |
1161 | extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); |
1162 | ||
a14ed312 | 1163 | extern void delete_breakpoint (struct breakpoint *); |
c906108c | 1164 | |
a14ed312 | 1165 | extern void breakpoint_auto_delete (bpstat); |
c906108c | 1166 | |
20388dd6 YQ |
1167 | typedef void (*walk_bp_location_callback) (struct bp_location *, void *); |
1168 | ||
1169 | extern void iterate_over_bp_locations (walk_bp_location_callback); | |
1170 | ||
5cea2a26 PA |
1171 | /* Return the chain of command lines to execute when this breakpoint |
1172 | is hit. */ | |
1173 | extern struct command_line *breakpoint_commands (struct breakpoint *b); | |
1174 | ||
956a9fb9 JB |
1175 | /* Return a string image of DISP. The string is static, and thus should |
1176 | NOT be deallocated after use. */ | |
1177 | const char *bpdisp_text (enum bpdisp disp); | |
1178 | ||
a14ed312 | 1179 | extern void break_command (char *, int); |
c906108c | 1180 | |
a14ed312 KB |
1181 | extern void hbreak_command_wrapper (char *, int); |
1182 | extern void thbreak_command_wrapper (char *, int); | |
1183 | extern void rbreak_command_wrapper (char *, int); | |
84f4c1fe PM |
1184 | extern void watch_command_wrapper (char *, int, int); |
1185 | extern void awatch_command_wrapper (char *, int, int); | |
1186 | extern void rwatch_command_wrapper (char *, int, int); | |
a14ed312 | 1187 | extern void tbreak_command (char *, int); |
c906108c | 1188 | |
ab04a2af | 1189 | extern struct breakpoint_ops base_breakpoint_ops; |
348d480f | 1190 | extern struct breakpoint_ops bkpt_breakpoint_ops; |
19ca11c5 | 1191 | extern struct breakpoint_ops tracepoint_breakpoint_ops; |
c5867ab6 | 1192 | extern struct breakpoint_ops dprintf_breakpoint_ops; |
348d480f | 1193 | |
2060206e | 1194 | extern void initialize_breakpoint_ops (void); |
348d480f | 1195 | |
9ac4176b PA |
1196 | /* Arguments to pass as context to some catch command handlers. */ |
1197 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
1198 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
1199 | ||
1200 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
1201 | lists, and pass some additional user data to the command | |
1202 | function. */ | |
1203 | ||
1204 | extern void | |
1205 | add_catch_command (char *name, char *docstring, | |
1206 | void (*sfunc) (char *args, int from_tty, | |
1207 | struct cmd_list_element *command), | |
625e8578 | 1208 | completer_ftype *completer, |
9ac4176b PA |
1209 | void *user_data_catch, |
1210 | void *user_data_tcatch); | |
1211 | ||
28010a5d | 1212 | /* Initialize a breakpoint struct for Ada exception catchpoints. */ |
9ac4176b PA |
1213 | |
1214 | extern void | |
28010a5d PA |
1215 | init_ada_exception_breakpoint (struct breakpoint *b, |
1216 | struct gdbarch *gdbarch, | |
1217 | struct symtab_and_line sal, | |
1218 | char *addr_string, | |
c0a91b2b | 1219 | const struct breakpoint_ops *ops, |
28010a5d | 1220 | int tempflag, |
349774ef | 1221 | int enabled, |
28010a5d PA |
1222 | int from_tty); |
1223 | ||
ab04a2af TT |
1224 | extern void init_catchpoint (struct breakpoint *b, |
1225 | struct gdbarch *gdbarch, int tempflag, | |
1226 | char *cond_string, | |
1227 | const struct breakpoint_ops *ops); | |
1228 | ||
28010a5d | 1229 | /* Add breakpoint B on the breakpoint list, and notify the user, the |
3a5c3e22 PA |
1230 | target and breakpoint_created observers of its existence. If |
1231 | INTERNAL is non-zero, the breakpoint number will be allocated from | |
3ea46bff YQ |
1232 | the internal breakpoint count. If UPDATE_GLL is non-zero, |
1233 | update_global_location_list will be called. */ | |
28010a5d | 1234 | |
3ea46bff YQ |
1235 | extern void install_breakpoint (int internal, struct breakpoint *b, |
1236 | int update_gll); | |
9ac4176b | 1237 | |
44f238bb PA |
1238 | /* Flags that can be passed down to create_breakpoint, etc., to affect |
1239 | breakpoint creation in several ways. */ | |
1240 | ||
1241 | enum breakpoint_create_flags | |
1242 | { | |
1243 | /* We're adding a breakpoint to our tables that is already | |
1244 | inserted in the target. */ | |
1245 | CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0 | |
1246 | }; | |
1247 | ||
8cdf0e15 VP |
1248 | extern int create_breakpoint (struct gdbarch *gdbarch, char *arg, |
1249 | char *cond_string, int thread, | |
e7e0cddf | 1250 | char *extra_string, |
f6de8ec2 | 1251 | int parse_arg, |
0fb4aa4b | 1252 | int tempflag, enum bptype wanted_type, |
8cdf0e15 VP |
1253 | int ignore_count, |
1254 | enum auto_boolean pending_break_support, | |
c0a91b2b | 1255 | const struct breakpoint_ops *ops, |
8cdf0e15 | 1256 | int from_tty, |
84f4c1fe | 1257 | int enabled, |
44f238bb | 1258 | int internal, unsigned flags); |
98deb0da | 1259 | |
e236ba44 | 1260 | extern void insert_breakpoints (void); |
c906108c | 1261 | |
a14ed312 | 1262 | extern int remove_breakpoints (void); |
c906108c | 1263 | |
6c95b8df PA |
1264 | extern int remove_breakpoints_pid (int pid); |
1265 | ||
c906108c SS |
1266 | /* This function can be used to physically insert eventpoints from the |
1267 | specified traced inferior process, without modifying the breakpoint | |
0e2de366 MS |
1268 | package's state. This can be useful for those targets which |
1269 | support following the processes of a fork() or vfork() system call, | |
1270 | when both of the resulting two processes are to be followed. */ | |
a14ed312 | 1271 | extern int reattach_breakpoints (int); |
c906108c SS |
1272 | |
1273 | /* This function can be used to update the breakpoint package's state | |
1274 | after an exec() system call has been executed. | |
1275 | ||
1276 | This function causes the following: | |
1277 | ||
c5aa993b JM |
1278 | - All eventpoints are marked "not inserted". |
1279 | - All eventpoints with a symbolic address are reset such that | |
1280 | the symbolic address must be reevaluated before the eventpoints | |
1281 | can be reinserted. | |
1282 | - The solib breakpoints are explicitly removed from the breakpoint | |
1283 | list. | |
1284 | - A step-resume breakpoint, if any, is explicitly removed from the | |
1285 | breakpoint list. | |
1286 | - All eventpoints without a symbolic address are removed from the | |
0e2de366 | 1287 | breakpoint list. */ |
a14ed312 | 1288 | extern void update_breakpoints_after_exec (void); |
c906108c SS |
1289 | |
1290 | /* This function can be used to physically remove hardware breakpoints | |
1291 | and watchpoints from the specified traced inferior process, without | |
1292 | modifying the breakpoint package's state. This can be useful for | |
1293 | those targets which support following the processes of a fork() or | |
1294 | vfork() system call, when one of the resulting two processes is to | |
1295 | be detached and allowed to run free. | |
c5aa993b | 1296 | |
c906108c | 1297 | It is an error to use this function on the process whose id is |
39f77062 | 1298 | inferior_ptid. */ |
d80ee84f | 1299 | extern int detach_breakpoints (ptid_t ptid); |
c5aa993b | 1300 | |
6c95b8df PA |
1301 | /* This function is called when program space PSPACE is about to be |
1302 | deleted. It takes care of updating breakpoints to not reference | |
1303 | this PSPACE anymore. */ | |
1304 | extern void breakpoint_program_space_exit (struct program_space *pspace); | |
1305 | ||
186c406b TT |
1306 | extern void set_longjmp_breakpoint (struct thread_info *tp, |
1307 | struct frame_id frame); | |
611c83ae PA |
1308 | extern void delete_longjmp_breakpoint (int thread); |
1309 | ||
f59f708a PA |
1310 | /* Mark all longjmp breakpoints from THREAD for later deletion. */ |
1311 | extern void delete_longjmp_breakpoint_at_next_stop (int thread); | |
1312 | ||
e2e4d78b JK |
1313 | extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void); |
1314 | extern void check_longjmp_breakpoint_for_call_dummy (int thread); | |
1315 | ||
1900040c MS |
1316 | extern void enable_overlay_breakpoints (void); |
1317 | extern void disable_overlay_breakpoints (void); | |
c906108c | 1318 | |
aa7d318d TT |
1319 | extern void set_std_terminate_breakpoint (void); |
1320 | extern void delete_std_terminate_breakpoint (void); | |
1321 | ||
c906108c SS |
1322 | /* These functions respectively disable or reenable all currently |
1323 | enabled watchpoints. When disabled, the watchpoints are marked | |
64b9b334 | 1324 | call_disabled. When re-enabled, they are marked enabled. |
c906108c | 1325 | |
04714b91 | 1326 | The intended client of these functions is call_function_by_hand. |
c906108c SS |
1327 | |
1328 | The inferior must be stopped, and all breakpoints removed, when | |
1329 | these functions are used. | |
1330 | ||
1331 | The need for these functions is that on some targets (e.g., HP-UX), | |
1332 | gdb is unable to unwind through the dummy frame that is pushed as | |
1333 | part of the implementation of a call command. Watchpoints can | |
1334 | cause the inferior to stop in places where this frame is visible, | |
1335 | and that can cause execution control to become very confused. | |
1336 | ||
7e73cedf | 1337 | Note that if a user sets breakpoints in an interactively called |
64b9b334 | 1338 | function, the call_disabled watchpoints will have been re-enabled |
c906108c SS |
1339 | when the first such breakpoint is reached. However, on targets |
1340 | that are unable to unwind through the call dummy frame, watches | |
1341 | of stack-based storage may then be deleted, because gdb will | |
1342 | believe that their watched storage is out of scope. (Sigh.) */ | |
a14ed312 | 1343 | extern void disable_watchpoints_before_interactive_call_start (void); |
c906108c | 1344 | |
a14ed312 | 1345 | extern void enable_watchpoints_after_interactive_call_stop (void); |
c906108c | 1346 | |
8bea4e01 UW |
1347 | /* These functions disable and re-enable all breakpoints during |
1348 | inferior startup. They are intended to be called from solib | |
1349 | code where necessary. This is needed on platforms where the | |
1350 | main executable is relocated at some point during startup | |
1351 | processing, making breakpoint addresses invalid. | |
1352 | ||
1353 | If additional breakpoints are created after the routine | |
1354 | disable_breakpoints_before_startup but before the routine | |
1355 | enable_breakpoints_after_startup was called, they will also | |
1356 | be marked as disabled. */ | |
1357 | extern void disable_breakpoints_before_startup (void); | |
1358 | extern void enable_breakpoints_after_startup (void); | |
1359 | ||
40c03ae8 | 1360 | /* For script interpreters that need to define breakpoint commands |
0e2de366 MS |
1361 | after they've already read the commands into a struct |
1362 | command_line. */ | |
40c03ae8 EZ |
1363 | extern enum command_control_type commands_from_control_command |
1364 | (char *arg, struct command_line *cmd); | |
c5aa993b | 1365 | |
a14ed312 | 1366 | extern void clear_breakpoint_hit_counts (void); |
c906108c | 1367 | |
48cb2d85 VP |
1368 | extern struct breakpoint *get_breakpoint (int num); |
1369 | ||
0e2de366 MS |
1370 | /* The following are for displays, which aren't really breakpoints, |
1371 | but here is as good a place as any for them. */ | |
c906108c | 1372 | |
a14ed312 | 1373 | extern void disable_current_display (void); |
c906108c | 1374 | |
a14ed312 | 1375 | extern void do_displays (void); |
c906108c | 1376 | |
a14ed312 | 1377 | extern void disable_display (int); |
c906108c | 1378 | |
a14ed312 | 1379 | extern void clear_displays (void); |
c906108c | 1380 | |
a14ed312 | 1381 | extern void disable_breakpoint (struct breakpoint *); |
c906108c | 1382 | |
a14ed312 | 1383 | extern void enable_breakpoint (struct breakpoint *); |
c906108c | 1384 | |
48cb2d85 VP |
1385 | extern void breakpoint_set_commands (struct breakpoint *b, |
1386 | struct command_line *commands); | |
1387 | ||
45a43567 TT |
1388 | extern void breakpoint_set_silent (struct breakpoint *b, int silent); |
1389 | ||
1390 | extern void breakpoint_set_thread (struct breakpoint *b, int thread); | |
1391 | ||
1392 | extern void breakpoint_set_task (struct breakpoint *b, int task); | |
1393 | ||
25b22b0a PA |
1394 | /* Clear the "inserted" flag in all breakpoints. */ |
1395 | extern void mark_breakpoints_out (void); | |
1396 | ||
a14ed312 | 1397 | extern void make_breakpoint_permanent (struct breakpoint *); |
c2c6d25f | 1398 | |
4efc6507 DE |
1399 | extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *, |
1400 | CORE_ADDR); | |
1401 | ||
a6d9a66e UW |
1402 | extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *, |
1403 | CORE_ADDR); | |
c906108c | 1404 | |
a6d9a66e UW |
1405 | extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *, |
1406 | CORE_ADDR); | |
c4093a6a | 1407 | |
03673fc7 PP |
1408 | extern void remove_jit_event_breakpoints (void); |
1409 | ||
a14ed312 | 1410 | extern void remove_solib_event_breakpoints (void); |
c906108c | 1411 | |
a14ed312 | 1412 | extern void remove_thread_event_breakpoints (void); |
c4093a6a | 1413 | |
cb851954 | 1414 | extern void disable_breakpoints_in_shlibs (void); |
c906108c | 1415 | |
0e2de366 | 1416 | /* This function returns TRUE if ep is a catchpoint. */ |
c326b90e | 1417 | extern int is_catchpoint (struct breakpoint *); |
c5aa993b | 1418 | |
91985142 MG |
1419 | /* Shared helper function (MI and CLI) for creating and installing |
1420 | a shared object event catchpoint. */ | |
1421 | extern void add_solib_catchpoint (char *arg, int is_load, int is_temp, | |
1422 | int enabled); | |
1423 | ||
c2c6d25f | 1424 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
0e2de366 | 1425 | deletes all breakpoints. */ |
c2c6d25f JM |
1426 | extern void delete_command (char *arg, int from_tty); |
1427 | ||
0e2de366 MS |
1428 | /* Manage a software single step breakpoint (or two). Insert may be |
1429 | called twice before remove is called. */ | |
6c95b8df | 1430 | extern void insert_single_step_breakpoint (struct gdbarch *, |
0e2de366 MS |
1431 | struct address_space *, |
1432 | CORE_ADDR); | |
f02253f1 | 1433 | extern int single_step_breakpoints_inserted (void); |
8181d85f | 1434 | extern void remove_single_step_breakpoints (void); |
d03285ec | 1435 | extern void cancel_single_step_breakpoints (void); |
8181d85f DJ |
1436 | |
1437 | /* Manage manual breakpoints, separate from the normal chain of | |
1438 | breakpoints. These functions are used in murky target-specific | |
1439 | ways. Please do not add more uses! */ | |
6c95b8df | 1440 | extern void *deprecated_insert_raw_breakpoint (struct gdbarch *, |
0e2de366 MS |
1441 | struct address_space *, |
1442 | CORE_ADDR); | |
a6d9a66e | 1443 | extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *); |
f83f82bc | 1444 | |
d983da9c DJ |
1445 | /* Check if any hardware watchpoints have triggered, according to the |
1446 | target. */ | |
1447 | int watchpoints_triggered (struct target_waitstatus *); | |
1448 | ||
f0ba3972 PA |
1449 | /* Helper for transparent breakpoint hiding for memory read and write |
1450 | routines. | |
1451 | ||
1452 | Update one of READBUF or WRITEBUF with either the shadows | |
1453 | (READBUF), or the breakpoint instructions (WRITEBUF) of inserted | |
1454 | breakpoints at the memory range defined by MEMADDR and extending | |
1455 | for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG | |
1456 | on entry.*/ | |
1457 | extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1458 | const gdb_byte *writebuf_org, | |
1459 | ULONGEST memaddr, LONGEST len); | |
8defab1a | 1460 | |
74960c60 VP |
1461 | extern int breakpoints_always_inserted_mode (void); |
1462 | ||
20874c92 VP |
1463 | /* Called each time new event from target is processed. |
1464 | Retires previously deleted breakpoint locations that | |
1465 | in our opinion won't ever trigger. */ | |
1466 | extern void breakpoint_retire_moribund (void); | |
1467 | ||
adc36818 PM |
1468 | /* Set break condition of breakpoint B to EXP. */ |
1469 | extern void set_breakpoint_condition (struct breakpoint *b, char *exp, | |
1470 | int from_tty); | |
1471 | ||
a96d9b2e SDJ |
1472 | /* Checks if we are catching syscalls or not. |
1473 | Returns 0 if not, greater than 0 if we are. */ | |
1474 | extern int catch_syscall_enabled (void); | |
1475 | ||
1476 | /* Checks if we are catching syscalls with the specific | |
1477 | syscall_number. Used for "filtering" the catchpoints. | |
1478 | Returns 0 if not, greater than 0 if we are. */ | |
1479 | extern int catching_syscall_number (int syscall_number); | |
1480 | ||
1042e4c0 | 1481 | /* Return a tracepoint with the given number if found. */ |
d9b3f62e | 1482 | extern struct tracepoint *get_tracepoint (int num); |
1042e4c0 | 1483 | |
d9b3f62e | 1484 | extern struct tracepoint *get_tracepoint_by_number_on_target (int num); |
d5551862 | 1485 | |
1042e4c0 | 1486 | /* Find a tracepoint by parsing a number in the supplied string. */ |
d9b3f62e | 1487 | extern struct tracepoint * |
197f0a60 TT |
1488 | get_tracepoint_by_number (char **arg, |
1489 | struct get_number_or_range_state *state, | |
1490 | int optional_p); | |
1042e4c0 SS |
1491 | |
1492 | /* Return a vector of all tracepoints currently defined. The vector | |
1493 | is newly allocated; the caller should free when done with it. */ | |
1494 | extern VEC(breakpoint_p) *all_tracepoints (void); | |
1495 | ||
d77f58be | 1496 | extern int is_tracepoint (const struct breakpoint *b); |
a7bdde9e | 1497 | |
0fb4aa4b PA |
1498 | /* Return a vector of all static tracepoints defined at ADDR. The |
1499 | vector is newly allocated; the caller should free when done with | |
1500 | it. */ | |
1501 | extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr); | |
1502 | ||
a7bdde9e VP |
1503 | /* Function that can be passed to read_command_line to validate |
1504 | that each command is suitable for tracepoint command list. */ | |
1505 | extern void check_tracepoint_command (char *line, void *closure); | |
1506 | ||
95a42b64 TT |
1507 | /* Call at the start and end of an "rbreak" command to register |
1508 | breakpoint numbers for a later "commands" command. */ | |
1509 | extern void start_rbreak_breakpoints (void); | |
1510 | extern void end_rbreak_breakpoints (void); | |
1511 | ||
84f4c1fe PM |
1512 | /* Breakpoint iterator function. |
1513 | ||
1514 | Calls a callback function once for each breakpoint, so long as the | |
1515 | callback function returns false. If the callback function returns | |
1516 | true, the iteration will end and the current breakpoint will be | |
1517 | returned. This can be useful for implementing a search for a | |
1518 | breakpoint with arbitrary attributes, or for applying an operation | |
1519 | to every breakpoint. */ | |
1520 | extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *, | |
1521 | void *), void *); | |
1522 | ||
0574c78f GB |
1523 | /* Nonzero if the specified PC cannot be a location where functions |
1524 | have been inlined. */ | |
1525 | ||
1526 | extern int pc_at_non_inline_function (struct address_space *aspace, | |
09ac7c10 TT |
1527 | CORE_ADDR pc, |
1528 | const struct target_waitstatus *ws); | |
0574c78f | 1529 | |
09d682a4 TT |
1530 | extern int user_breakpoint_p (struct breakpoint *); |
1531 | ||
1bfeeb0f JL |
1532 | /* Attempt to determine architecture of location identified by SAL. */ |
1533 | extern struct gdbarch *get_sal_arch (struct symtab_and_line sal); | |
1534 | ||
2f202fde JK |
1535 | extern void breakpoint_free_objfile (struct objfile *objfile); |
1536 | ||
916703c0 TT |
1537 | extern char *ep_parse_optional_if_clause (char **arg); |
1538 | ||
c906108c | 1539 | #endif /* !defined (BREAKPOINT_H) */ |