Commit | Line | Data |
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c906108c | 1 | /* Data structures associated with breakpoints in GDB. |
197e01b6 | 2 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4c38e0a4 | 3 | 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (BREAKPOINT_H) | |
21 | #define BREAKPOINT_H 1 | |
22 | ||
23 | #include "frame.h" | |
24 | #include "value.h" | |
d6e956e5 | 25 | #include "vec.h" |
c906108c | 26 | |
278cd55f | 27 | struct value; |
fe898f56 | 28 | struct block; |
50389644 | 29 | struct breakpoint_object; |
278cd55f | 30 | |
c906108c SS |
31 | /* This is the maximum number of bytes a breakpoint instruction can take. |
32 | Feel free to increase it. It's just used in a few places to size | |
33 | arrays that should be independent of the target architecture. */ | |
34 | ||
35 | #define BREAKPOINT_MAX 16 | |
36 | \f | |
a96d9b2e SDJ |
37 | |
38 | /* Type of breakpoint. */ | |
c906108c SS |
39 | /* FIXME In the future, we should fold all other breakpoint-like things into |
40 | here. This includes: | |
41 | ||
42 | * single-step (for machines where we have to simulate single stepping) | |
c5aa993b JM |
43 | (probably, though perhaps it is better for it to look as much as |
44 | possible like a single-step to wait_for_inferior). */ | |
45 | ||
46 | enum bptype | |
47 | { | |
48 | bp_none = 0, /* Eventpoint has been deleted. */ | |
49 | bp_breakpoint, /* Normal breakpoint */ | |
50 | bp_hardware_breakpoint, /* Hardware assisted breakpoint */ | |
51 | bp_until, /* used by until command */ | |
52 | bp_finish, /* used by finish command */ | |
53 | bp_watchpoint, /* Watchpoint */ | |
54 | bp_hardware_watchpoint, /* Hardware assisted watchpoint */ | |
55 | bp_read_watchpoint, /* read watchpoint, (hardware assisted) */ | |
56 | bp_access_watchpoint, /* access watchpoint, (hardware assisted) */ | |
57 | bp_longjmp, /* secret breakpoint to find longjmp() */ | |
58 | bp_longjmp_resume, /* secret breakpoint to escape longjmp() */ | |
59 | ||
186c406b TT |
60 | /* An internal breakpoint that is installed on the unwinder's |
61 | debug hook. */ | |
62 | bp_exception, | |
63 | /* An internal breakpoint that is set at the point where an | |
64 | exception will land. */ | |
65 | bp_exception_resume, | |
66 | ||
c5aa993b JM |
67 | /* Used by wait_for_inferior for stepping over subroutine calls, for |
68 | stepping over signal handlers, and for skipping prologues. */ | |
69 | bp_step_resume, | |
70 | ||
c5aa993b JM |
71 | /* Used to detect when a watchpoint expression has gone out of |
72 | scope. These breakpoints are usually not visible to the user. | |
73 | ||
74 | This breakpoint has some interesting properties: | |
c906108c SS |
75 | |
76 | 1) There's always a 1:1 mapping between watchpoints | |
77 | on local variables and watchpoint_scope breakpoints. | |
78 | ||
79 | 2) It automatically deletes itself and the watchpoint it's | |
80 | associated with when hit. | |
81 | ||
82 | 3) It can never be disabled. */ | |
c5aa993b JM |
83 | bp_watchpoint_scope, |
84 | ||
85 | /* The breakpoint at the end of a call dummy. */ | |
86 | /* FIXME: What if the function we are calling longjmp()s out of the | |
87 | call, or the user gets out with the "return" command? We currently | |
88 | have no way of cleaning up the breakpoint in these (obscure) situations. | |
89 | (Probably can solve this by noticing longjmp, "return", etc., it's | |
90 | similar to noticing when a watchpoint on a local variable goes out | |
91 | of scope (with hardware support for watchpoints)). */ | |
92 | bp_call_dummy, | |
93 | ||
aa7d318d TT |
94 | /* A breakpoint set on std::terminate, that is used to catch |
95 | otherwise uncaught exceptions thrown during an inferior call. */ | |
96 | bp_std_terminate, | |
97 | ||
c5aa993b JM |
98 | /* Some dynamic linkers (HP, maybe Solaris) can arrange for special |
99 | code in the inferior to run when significant events occur in the | |
100 | dynamic linker (for example a library is loaded or unloaded). | |
101 | ||
102 | By placing a breakpoint in this magic code GDB will get control | |
103 | when these significant events occur. GDB can then re-examine | |
104 | the dynamic linker's data structures to discover any newly loaded | |
105 | dynamic libraries. */ | |
106 | bp_shlib_event, | |
107 | ||
c4093a6a JM |
108 | /* Some multi-threaded systems can arrange for a location in the |
109 | inferior to be executed when certain thread-related events occur | |
110 | (such as thread creation or thread death). | |
111 | ||
112 | By placing a breakpoint at one of these locations, GDB will get | |
113 | control when these events occur. GDB can then update its thread | |
114 | lists etc. */ | |
115 | ||
116 | bp_thread_event, | |
117 | ||
1900040c MS |
118 | /* On the same principal, an overlay manager can arrange to call a |
119 | magic location in the inferior whenever there is an interesting | |
120 | change in overlay status. GDB can update its overlay tables | |
121 | and fiddle with breakpoints in overlays when this breakpoint | |
122 | is hit. */ | |
123 | ||
124 | bp_overlay_event, | |
125 | ||
0fd8e87f UW |
126 | /* Master copies of longjmp breakpoints. These are always installed |
127 | as soon as an objfile containing longjmp is loaded, but they are | |
128 | always disabled. While necessary, temporary clones of bp_longjmp | |
129 | type will be created and enabled. */ | |
130 | ||
131 | bp_longjmp_master, | |
132 | ||
aa7d318d TT |
133 | /* Master copies of std::terminate breakpoints. */ |
134 | bp_std_terminate_master, | |
135 | ||
186c406b TT |
136 | /* Like bp_longjmp_master, but for exceptions. */ |
137 | bp_exception_master, | |
138 | ||
ce78b96d | 139 | bp_catchpoint, |
1042e4c0 SS |
140 | |
141 | bp_tracepoint, | |
7a697b8d | 142 | bp_fast_tracepoint, |
0fb4aa4b | 143 | bp_static_tracepoint, |
4efc6507 DE |
144 | |
145 | /* Event for JIT compiled code generation or deletion. */ | |
146 | bp_jit_event, | |
c5aa993b | 147 | }; |
c906108c SS |
148 | |
149 | /* States of enablement of breakpoint. */ | |
150 | ||
b5de0fa7 | 151 | enum enable_state |
c5aa993b | 152 | { |
b5de0fa7 EZ |
153 | bp_disabled, /* The eventpoint is inactive, and cannot trigger. */ |
154 | bp_enabled, /* The eventpoint is active, and can trigger. */ | |
b5de0fa7 | 155 | bp_call_disabled, /* The eventpoint has been disabled while a call |
53a5351d JM |
156 | into the inferior is "in flight", because some |
157 | eventpoints interfere with the implementation of | |
158 | a call on some targets. The eventpoint will be | |
159 | automatically enabled and reset when the call | |
160 | "lands" (either completes, or stops at another | |
161 | eventpoint). */ | |
8bea4e01 UW |
162 | bp_startup_disabled,/* The eventpoint has been disabled during inferior |
163 | startup. This is necessary on some targets where | |
164 | the main executable will get relocated during | |
165 | startup, making breakpoint addresses invalid. | |
166 | The eventpoint will be automatically enabled and | |
167 | reset once inferior startup is complete. */ | |
b5de0fa7 | 168 | bp_permanent /* There is a breakpoint instruction hard-wired into |
c2c6d25f JM |
169 | the target's code. Don't try to write another |
170 | breakpoint instruction on top of it, or restore | |
171 | its value. Step over it using the architecture's | |
172 | SKIP_INSN macro. */ | |
c5aa993b | 173 | }; |
c906108c SS |
174 | |
175 | ||
176 | /* Disposition of breakpoint. Ie: what to do after hitting it. */ | |
177 | ||
c5aa993b JM |
178 | enum bpdisp |
179 | { | |
b5de0fa7 EZ |
180 | disp_del, /* Delete it */ |
181 | disp_del_at_next_stop, /* Delete at next stop, whether hit or not */ | |
182 | disp_disable, /* Disable it */ | |
183 | disp_donttouch /* Leave it alone */ | |
c5aa993b | 184 | }; |
c906108c | 185 | |
53a5351d JM |
186 | enum target_hw_bp_type |
187 | { | |
188 | hw_write = 0, /* Common HW watchpoint */ | |
189 | hw_read = 1, /* Read HW watchpoint */ | |
190 | hw_access = 2, /* Access HW watchpoint */ | |
191 | hw_execute = 3 /* Execute HW breakpoint */ | |
192 | }; | |
193 | ||
8181d85f DJ |
194 | |
195 | /* Information used by targets to insert and remove breakpoints. */ | |
196 | ||
197 | struct bp_target_info | |
198 | { | |
6c95b8df PA |
199 | /* Address space at which the breakpoint was placed. */ |
200 | struct address_space *placed_address_space; | |
201 | ||
8181d85f DJ |
202 | /* Address at which the breakpoint was placed. This is normally the |
203 | same as ADDRESS from the bp_location, except when adjustment | |
3b3b875c | 204 | happens in gdbarch_breakpoint_from_pc. The most common form of |
8181d85f DJ |
205 | adjustment is stripping an alternate ISA marker from the PC which |
206 | is used to determine the type of breakpoint to insert. */ | |
207 | CORE_ADDR placed_address; | |
208 | ||
209 | /* If the breakpoint lives in memory and reading that memory would | |
210 | give back the breakpoint, instead of the original contents, then | |
211 | the original contents are cached here. Only SHADOW_LEN bytes of | |
212 | this buffer are valid, and only when the breakpoint is inserted. */ | |
213 | gdb_byte shadow_contents[BREAKPOINT_MAX]; | |
214 | ||
215 | /* The length of the data cached in SHADOW_CONTENTS. */ | |
216 | int shadow_len; | |
217 | ||
218 | /* The size of the placed breakpoint, according to | |
3b3b875c | 219 | gdbarch_breakpoint_from_pc, when the breakpoint was inserted. This is |
8181d85f DJ |
220 | generally the same as SHADOW_LEN, unless we did not need |
221 | to read from the target to implement the memory breakpoint | |
222 | (e.g. if a remote stub handled the details). We may still | |
223 | need the size to remove the breakpoint safely. */ | |
224 | int placed_size; | |
225 | }; | |
226 | ||
5cab636d DJ |
227 | /* GDB maintains two types of information about each breakpoint (or |
228 | watchpoint, or other related event). The first type corresponds | |
229 | to struct breakpoint; this is a relatively high-level structure | |
230 | which contains the source location(s), stopping conditions, user | |
231 | commands to execute when the breakpoint is hit, and so forth. | |
232 | ||
233 | The second type of information corresponds to struct bp_location. | |
234 | Each breakpoint has one or (eventually) more locations associated | |
235 | with it, which represent target-specific and machine-specific | |
236 | mechanisms for stopping the program. For instance, a watchpoint | |
237 | expression may require multiple hardware watchpoints in order to | |
238 | catch all changes in the value of the expression being watched. */ | |
239 | ||
240 | enum bp_loc_type | |
241 | { | |
242 | bp_loc_software_breakpoint, | |
243 | bp_loc_hardware_breakpoint, | |
244 | bp_loc_hardware_watchpoint, | |
245 | bp_loc_other /* Miscellaneous... */ | |
246 | }; | |
247 | ||
248 | struct bp_location | |
249 | { | |
0d381245 VP |
250 | /* Chain pointer to the next breakpoint location for |
251 | the same parent breakpoint. */ | |
7cc221ef DJ |
252 | struct bp_location *next; |
253 | ||
f431efe5 PA |
254 | /* The reference count. */ |
255 | int refc; | |
256 | ||
5cab636d DJ |
257 | /* Type of this breakpoint location. */ |
258 | enum bp_loc_type loc_type; | |
259 | ||
260 | /* Each breakpoint location must belong to exactly one higher-level | |
f431efe5 PA |
261 | breakpoint. This pointer is NULL iff this bp_location is no |
262 | longer attached to a breakpoint. For example, when a breakpoint | |
263 | is deleted, its locations may still be found in the | |
264 | moribund_locations list, or if we had stopped for it, in | |
265 | bpstats. */ | |
5cab636d DJ |
266 | struct breakpoint *owner; |
267 | ||
60e1c644 PA |
268 | /* Conditional. Break only if this expression's value is nonzero. |
269 | Unlike string form of condition, which is associated with | |
270 | breakpoint, this is associated with location, since if breakpoint | |
271 | has several locations, the evaluation of expression can be | |
272 | different for different locations. Only valid for real | |
273 | breakpoints; a watchpoint's conditional expression is stored in | |
274 | the owner breakpoint object. */ | |
511a6cd4 | 275 | struct expression *cond; |
0d381245 VP |
276 | |
277 | /* This location's address is in an unloaded solib, and so this | |
278 | location should not be inserted. It will be automatically | |
279 | enabled when that solib is loaded. */ | |
280 | char shlib_disabled; | |
281 | ||
282 | /* Is this particular location enabled. */ | |
283 | char enabled; | |
511a6cd4 | 284 | |
5cab636d DJ |
285 | /* Nonzero if this breakpoint is now inserted. */ |
286 | char inserted; | |
287 | ||
288 | /* Nonzero if this is not the first breakpoint in the list | |
289 | for the given address. */ | |
290 | char duplicate; | |
291 | ||
292 | /* If we someday support real thread-specific breakpoints, then | |
293 | the breakpoint location will need a thread identifier. */ | |
294 | ||
295 | /* Data for specific breakpoint types. These could be a union, but | |
296 | simplicity is more important than memory usage for breakpoints. */ | |
297 | ||
a6d9a66e UW |
298 | /* Architecture associated with this location's address. May be |
299 | different from the breakpoint architecture. */ | |
300 | struct gdbarch *gdbarch; | |
301 | ||
6c95b8df PA |
302 | /* The program space associated with this breakpoint location |
303 | address. Note that an address space may be represented in more | |
304 | than one program space (e.g. each uClinux program will be given | |
305 | its own program space, but there will only be one address space | |
306 | for all of them), but we must not insert more than one location | |
307 | at the same address in the same address space. */ | |
308 | struct program_space *pspace; | |
309 | ||
5cab636d DJ |
310 | /* Note that zero is a perfectly valid code address on some platforms |
311 | (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL | |
312 | is not a special value for this field. Valid for all types except | |
313 | bp_loc_other. */ | |
314 | CORE_ADDR address; | |
315 | ||
a5606eee VP |
316 | /* For hardware watchpoints, the size of data ad ADDRESS being watches. */ |
317 | int length; | |
318 | ||
319 | /* Type of hardware watchpoint. */ | |
320 | enum target_hw_bp_type watchpoint_type; | |
321 | ||
714835d5 | 322 | /* For any breakpoint type with an address, this is the section |
cf3a9e5b | 323 | associated with the address. Used primarily for overlay debugging. */ |
714835d5 | 324 | struct obj_section *section; |
cf3a9e5b | 325 | |
5cab636d DJ |
326 | /* Address at which breakpoint was requested, either by the user or |
327 | by GDB for internal breakpoints. This will usually be the same | |
328 | as ``address'' (above) except for cases in which | |
329 | ADJUST_BREAKPOINT_ADDRESS has computed a different address at | |
330 | which to place the breakpoint in order to comply with a | |
331 | processor's architectual constraints. */ | |
332 | CORE_ADDR requested_address; | |
8181d85f | 333 | |
0d381245 VP |
334 | char *function_name; |
335 | ||
8181d85f DJ |
336 | /* Details of the placed breakpoint, when inserted. */ |
337 | struct bp_target_info target_info; | |
338 | ||
339 | /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */ | |
340 | struct bp_target_info overlay_target_info; | |
20874c92 VP |
341 | |
342 | /* In a non-stop mode, it's possible that we delete a breakpoint, | |
343 | but as we do that, some still running thread hits that breakpoint. | |
344 | For that reason, we need to keep locations belonging to deleted | |
345 | breakpoints for a bit, so that don't report unexpected SIGTRAP. | |
346 | We can't keep such locations forever, so we use a heuristic -- | |
347 | after we process certain number of inferior events since | |
348 | breakpoint was deleted, we retire all locations of that breakpoint. | |
349 | This variable keeps a number of events still to go, when | |
350 | it becomes 0 this location is retired. */ | |
351 | int events_till_retirement; | |
5cab636d DJ |
352 | }; |
353 | ||
3086aeae DJ |
354 | /* This structure is a collection of function pointers that, if available, |
355 | will be called instead of the performing the default action for this | |
356 | bptype. */ | |
357 | ||
358 | struct breakpoint_ops | |
359 | { | |
ce78b96d JB |
360 | /* Insert the breakpoint or activate the catchpoint. Should raise |
361 | an exception if the operation failed. */ | |
362 | void (*insert) (struct breakpoint *); | |
363 | ||
364 | /* Remove the breakpoint/catchpoint that was previously inserted | |
365 | with the "insert" method above. Return non-zero if the operation | |
366 | succeeded. */ | |
367 | int (*remove) (struct breakpoint *); | |
368 | ||
369 | /* Return non-zero if the debugger should tell the user that this | |
370 | breakpoint was hit. */ | |
371 | int (*breakpoint_hit) (struct breakpoint *); | |
372 | ||
3086aeae DJ |
373 | /* The normal print routine for this breakpoint, called when we |
374 | hit it. */ | |
375 | enum print_stop_action (*print_it) (struct breakpoint *); | |
376 | ||
377 | /* Display information about this breakpoint, for "info breakpoints". */ | |
a6d9a66e | 378 | void (*print_one) (struct breakpoint *, struct bp_location **); |
3086aeae DJ |
379 | |
380 | /* Display information about this breakpoint after setting it (roughly | |
381 | speaking; this is called from "mention"). */ | |
382 | void (*print_mention) (struct breakpoint *); | |
6149aea9 PA |
383 | |
384 | /* Print to FP the CLI command that recreates this breakpoint. */ | |
385 | void (*print_recreate) (struct breakpoint *, struct ui_file *fp); | |
3086aeae DJ |
386 | }; |
387 | ||
d983da9c DJ |
388 | enum watchpoint_triggered |
389 | { | |
390 | /* This watchpoint definitely did not trigger. */ | |
391 | watch_triggered_no = 0, | |
392 | ||
393 | /* Some hardware watchpoint triggered, and it might have been this | |
394 | one, but we do not know which it was. */ | |
395 | watch_triggered_unknown, | |
396 | ||
397 | /* This hardware watchpoint definitely did trigger. */ | |
398 | watch_triggered_yes | |
399 | }; | |
400 | ||
a96d9b2e SDJ |
401 | /* This is used to declare the VEC syscalls_to_be_caught. */ |
402 | DEF_VEC_I(int); | |
403 | ||
74960c60 VP |
404 | typedef struct bp_location *bp_location_p; |
405 | DEF_VEC_P(bp_location_p); | |
406 | ||
9add0f1b | 407 | /* A reference-counted struct command_line. This lets multiple |
5cea2a26 PA |
408 | breakpoints share a single command list. This is an implementation |
409 | detail to the breakpoints module. */ | |
410 | struct counted_command_line; | |
9add0f1b | 411 | |
c906108c SS |
412 | /* Note that the ->silent field is not currently used by any commands |
413 | (though the code is in there if it was to be, and set_raw_breakpoint | |
414 | does set it to 0). I implemented it because I thought it would be | |
415 | useful for a hack I had to put in; I'm going to leave it in because | |
416 | I can see how there might be times when it would indeed be useful */ | |
417 | ||
418 | /* This is for a breakpoint or a watchpoint. */ | |
419 | ||
420 | struct breakpoint | |
c5aa993b JM |
421 | { |
422 | struct breakpoint *next; | |
423 | /* Type of breakpoint. */ | |
424 | enum bptype type; | |
425 | /* Zero means disabled; remember the info but don't break here. */ | |
b5de0fa7 | 426 | enum enable_state enable_state; |
c5aa993b JM |
427 | /* What to do with this breakpoint after we hit it. */ |
428 | enum bpdisp disposition; | |
429 | /* Number assigned to distinguish breakpoints. */ | |
430 | int number; | |
431 | ||
5cab636d DJ |
432 | /* Location(s) associated with this high-level breakpoint. */ |
433 | struct bp_location *loc; | |
76897487 | 434 | |
644a1fe1 | 435 | /* Line number of this address. */ |
c5aa993b JM |
436 | |
437 | int line_number; | |
438 | ||
644a1fe1 | 439 | /* Source file name of this address. */ |
c5aa993b JM |
440 | |
441 | char *source_file; | |
442 | ||
443 | /* Non-zero means a silent breakpoint (don't print frame info | |
444 | if we stop here). */ | |
445 | unsigned char silent; | |
446 | /* Number of stops at this breakpoint that should | |
447 | be continued automatically before really stopping. */ | |
448 | int ignore_count; | |
c5aa993b | 449 | /* Chain of command lines to execute when this breakpoint is hit. */ |
9add0f1b | 450 | struct counted_command_line *commands; |
c5aa993b JM |
451 | /* Stack depth (address of frame). If nonzero, break only if fp |
452 | equals this. */ | |
818dd999 | 453 | struct frame_id frame_id; |
c5aa993b | 454 | |
6c95b8df PA |
455 | /* The program space used to set the breakpoint. */ |
456 | struct program_space *pspace; | |
457 | ||
644a1fe1 | 458 | /* String we used to set the breakpoint (malloc'd). */ |
c5aa993b | 459 | char *addr_string; |
a6d9a66e UW |
460 | /* Architecture we used to set the breakpoint. */ |
461 | struct gdbarch *gdbarch; | |
c5aa993b JM |
462 | /* Language we used to set the breakpoint. */ |
463 | enum language language; | |
464 | /* Input radix we used to set the breakpoint. */ | |
465 | int input_radix; | |
466 | /* String form of the breakpoint condition (malloc'd), or NULL if there | |
467 | is no condition. */ | |
468 | char *cond_string; | |
d63d0675 JK |
469 | /* String form of exp to use for displaying to the user (malloc'd), or |
470 | NULL if none. */ | |
c5aa993b | 471 | char *exp_string; |
d63d0675 JK |
472 | /* String form to use for reparsing of EXP (malloc'd) or NULL. */ |
473 | char *exp_string_reparse; | |
c5aa993b JM |
474 | |
475 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
476 | struct expression *exp; | |
477 | /* The largest block within which it is valid, or NULL if it is | |
478 | valid anywhere (e.g. consists just of global symbols). */ | |
479 | struct block *exp_valid_block; | |
60e1c644 PA |
480 | /* The conditional expression if any. NULL if not a watchpoint. */ |
481 | struct expression *cond_exp; | |
482 | /* The largest block within which it is valid, or NULL if it is | |
483 | valid anywhere (e.g. consists just of global symbols). */ | |
484 | struct block *cond_exp_valid_block; | |
fa4727a6 DJ |
485 | /* Value of the watchpoint the last time we checked it, or NULL |
486 | when we do not know the value yet or the value was not | |
487 | readable. VAL is never lazy. */ | |
278cd55f | 488 | struct value *val; |
fa4727a6 DJ |
489 | /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL, |
490 | then an error occurred reading the value. */ | |
491 | int val_valid; | |
c5aa993b | 492 | |
c5aa993b JM |
493 | /* Holds the address of the related watchpoint_scope breakpoint |
494 | when using watchpoints on local variables (might the concept | |
495 | of a related breakpoint be useful elsewhere, if not just call | |
496 | it the watchpoint_scope breakpoint or something like that. FIXME). */ | |
497 | struct breakpoint *related_breakpoint; | |
498 | ||
101dcfbe AC |
499 | /* Holds the frame address which identifies the frame this |
500 | watchpoint should be evaluated in, or `null' if the watchpoint | |
501 | should be evaluated on the outermost frame. */ | |
502 | struct frame_id watchpoint_frame; | |
c5aa993b | 503 | |
f6bc2008 PA |
504 | /* Holds the thread which identifies the frame this watchpoint |
505 | should be considered in scope for, or `null_ptid' if the | |
506 | watchpoint should be evaluated in all threads. */ | |
507 | ptid_t watchpoint_thread; | |
508 | ||
d983da9c DJ |
509 | /* For hardware watchpoints, the triggered status according to the |
510 | hardware. */ | |
511 | enum watchpoint_triggered watchpoint_triggered; | |
512 | ||
4a306c9a | 513 | /* Thread number for thread-specific breakpoint, or -1 if don't care. */ |
c5aa993b JM |
514 | int thread; |
515 | ||
4a306c9a JB |
516 | /* Ada task number for task-specific breakpoint, or 0 if don't care. */ |
517 | int task; | |
518 | ||
c5aa993b JM |
519 | /* Count of the number of times this breakpoint was taken, dumped |
520 | with the info, but not used for anything else. Useful for | |
521 | seeing how many times you hit a break prior to the program | |
522 | aborting, so you can back up to just before the abort. */ | |
523 | int hit_count; | |
524 | ||
53a5351d | 525 | /* Process id of a child process whose forking triggered this |
7e73cedf | 526 | catchpoint. This field is only valid immediately after this |
53a5351d | 527 | catchpoint has triggered. */ |
3a3e9ee3 | 528 | ptid_t forked_inferior_pid; |
c5aa993b | 529 | |
53a5351d | 530 | /* Filename of a program whose exec triggered this catchpoint. |
7e73cedf | 531 | This field is only valid immediately after this catchpoint has |
53a5351d | 532 | triggered. */ |
c5aa993b JM |
533 | char *exec_pathname; |
534 | ||
a96d9b2e SDJ |
535 | /* Syscall numbers used for the 'catch syscall' feature. |
536 | If no syscall has been specified for filtering, its value is NULL. | |
537 | Otherwise, it holds a list of all syscalls to be caught. | |
538 | The list elements are allocated with xmalloc. */ | |
539 | VEC(int) *syscalls_to_be_caught; | |
540 | ||
3086aeae DJ |
541 | /* Methods associated with this breakpoint. */ |
542 | struct breakpoint_ops *ops; | |
0101ce28 | 543 | |
0d381245 VP |
544 | /* Is breakpoint's condition not yet parsed because we found |
545 | no location initially so had no context to parse | |
546 | the condition in. */ | |
547 | int condition_not_parsed; | |
1042e4c0 SS |
548 | |
549 | /* Number of times this tracepoint should single-step | |
550 | and collect additional data. */ | |
551 | long step_count; | |
552 | ||
553 | /* Number of times this tracepoint should be hit before | |
554 | disabling/ending. */ | |
555 | int pass_count; | |
556 | ||
d5551862 SS |
557 | /* The number of the tracepoint on the target. */ |
558 | int number_on_target; | |
0fb4aa4b PA |
559 | |
560 | /* The static tracepoint marker id, if known. */ | |
561 | char *static_trace_marker_id; | |
562 | ||
563 | /* LTTng/UST allow more than one marker with the same ID string, | |
564 | although it unadvised because it confuses tools. When setting | |
565 | static tracepoints by marker ID, this will record the index in | |
566 | the array of markers we found for the given marker ID for which | |
567 | this static tracepoint corresponds. When resetting | |
568 | breakpoints, we will use this index to try to find the same | |
569 | marker again. */ | |
570 | int static_trace_marker_id_idx; | |
84f4c1fe PM |
571 | |
572 | /* With a Python scripting enabled GDB, store a reference to the | |
573 | Python object that has been associated with this breakpoint. | |
574 | This is always NULL for a GDB that is not script enabled. It | |
575 | can sometimes be NULL for enabled GDBs as not all breakpoint | |
576 | types are tracked by the Python scripting API. */ | |
50389644 | 577 | struct breakpoint_object *py_bp_object; |
84f4c1fe | 578 | }; |
d6e956e5 VP |
579 | |
580 | typedef struct breakpoint *breakpoint_p; | |
581 | DEF_VEC_P(breakpoint_p); | |
c906108c | 582 | \f |
53a5351d JM |
583 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
584 | status"). This provides the ability to determine whether we have | |
585 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
586 | |
587 | typedef struct bpstats *bpstat; | |
588 | ||
198757a8 VP |
589 | /* Clears a chain of bpstat, freeing storage |
590 | of each. */ | |
a14ed312 | 591 | extern void bpstat_clear (bpstat *); |
c906108c SS |
592 | |
593 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
594 | is part of the bpstat is copied as well. */ | |
a14ed312 | 595 | extern bpstat bpstat_copy (bpstat); |
c906108c | 596 | |
6c95b8df PA |
597 | extern bpstat bpstat_stop_status (struct address_space *aspace, |
598 | CORE_ADDR pc, ptid_t ptid); | |
c906108c SS |
599 | \f |
600 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
628fe4e4 JK |
601 | breakpoint (a challenging task). |
602 | ||
603 | The enum values order defines priority-like order of the actions. | |
604 | Once you've decided that some action is appropriate, you'll never | |
605 | go back and decide something of a lower priority is better. Each | |
606 | of these actions is mutually exclusive with the others. That | |
607 | means, that if you find yourself adding a new action class here and | |
608 | wanting to tell GDB that you have two simultaneous actions to | |
609 | handle, something is wrong, and you probably don't actually need a | |
610 | new action type. | |
611 | ||
612 | Note that a step resume breakpoint overrides another breakpoint of | |
613 | signal handling (see comment in wait_for_inferior at where we set | |
614 | the step_resume breakpoint). */ | |
c906108c | 615 | |
c5aa993b JM |
616 | enum bpstat_what_main_action |
617 | { | |
618 | /* Perform various other tests; that is, this bpstat does not | |
619 | say to perform any action (e.g. failed watchpoint and nothing | |
620 | else). */ | |
621 | BPSTAT_WHAT_KEEP_CHECKING, | |
622 | ||
c5aa993b JM |
623 | /* Remove breakpoints, single step once, then put them back in and |
624 | go back to what we were doing. It's possible that this should be | |
625 | removed from the main_action and put into a separate field, to more | |
626 | cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
627 | BPSTAT_WHAT_SINGLE, | |
628 | ||
629 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
630 | and continue. The "remove all other breakpoints" part is required | |
631 | if we are also stepping over another breakpoint as well as doing | |
632 | the longjmp handling. */ | |
633 | BPSTAT_WHAT_SET_LONGJMP_RESUME, | |
634 | ||
635 | /* Clear longjmp_resume breakpoint, then handle as | |
636 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
637 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
638 | ||
628fe4e4 JK |
639 | /* Rather than distinguish between noisy and silent stops here, it |
640 | might be cleaner to have bpstat_print make that decision (also | |
641 | taking into account stop_print_frame and source_only). But the | |
642 | implications are a bit scary (interaction with auto-displays, etc.), | |
643 | so I won't try it. */ | |
c5aa993b | 644 | |
628fe4e4 JK |
645 | /* Stop silently. */ |
646 | BPSTAT_WHAT_STOP_SILENT, | |
c5aa993b | 647 | |
628fe4e4 JK |
648 | /* Stop and print. */ |
649 | BPSTAT_WHAT_STOP_NOISY, | |
4efc6507 | 650 | |
628fe4e4 JK |
651 | /* Clear step resume breakpoint, and keep checking. */ |
652 | BPSTAT_WHAT_STEP_RESUME, | |
c5aa993b JM |
653 | }; |
654 | ||
aa7d318d TT |
655 | /* An enum indicating the kind of "stack dummy" stop. This is a bit |
656 | of a misnomer because only one kind of truly a stack dummy. */ | |
657 | enum stop_stack_kind | |
658 | { | |
659 | /* We didn't stop at a stack dummy breakpoint. */ | |
660 | STOP_NONE = 0, | |
661 | ||
662 | /* Stopped at a stack dummy. */ | |
663 | STOP_STACK_DUMMY, | |
664 | ||
665 | /* Stopped at std::terminate. */ | |
666 | STOP_STD_TERMINATE | |
667 | }; | |
668 | ||
c5aa993b JM |
669 | struct bpstat_what |
670 | { | |
671 | enum bpstat_what_main_action main_action; | |
672 | ||
673 | /* Did we hit a call dummy breakpoint? This only goes with a main_action | |
674 | of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of | |
675 | continuing from a call dummy without popping the frame is not a | |
676 | useful one). */ | |
aa7d318d | 677 | enum stop_stack_kind call_dummy; |
186c406b TT |
678 | |
679 | /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and | |
680 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a | |
681 | longjmp, false if we are handling an exception. */ | |
682 | int is_longjmp; | |
c5aa993b | 683 | }; |
c906108c | 684 | |
5c44784c JM |
685 | /* The possible return values for print_bpstat, print_it_normal, |
686 | print_it_done, print_it_noop. */ | |
687 | enum print_stop_action | |
688 | { | |
689 | PRINT_UNKNOWN = -1, | |
690 | PRINT_SRC_AND_LOC, | |
691 | PRINT_SRC_ONLY, | |
692 | PRINT_NOTHING | |
693 | }; | |
694 | ||
c906108c | 695 | /* Tell what to do about this bpstat. */ |
a14ed312 | 696 | struct bpstat_what bpstat_what (bpstat); |
c906108c SS |
697 | \f |
698 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ | |
a14ed312 | 699 | bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *); |
c906108c | 700 | |
c906108c SS |
701 | /* Nonzero if a signal that we got in wait() was due to circumstances |
702 | explained by the BS. */ | |
703 | /* Currently that is true if we have hit a breakpoint, or if there is | |
704 | a watchpoint enabled. */ | |
705 | #define bpstat_explains_signal(bs) ((bs) != NULL) | |
706 | ||
67822962 PA |
707 | /* Nonzero is this bpstat causes a stop. */ |
708 | extern int bpstat_causes_stop (bpstat); | |
709 | ||
c906108c SS |
710 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
711 | without hardware support). This isn't related to a specific bpstat, | |
712 | just to things like whether watchpoints are set. */ | |
a14ed312 | 713 | extern int bpstat_should_step (void); |
c906108c | 714 | |
c906108c SS |
715 | /* Print a message indicating what happened. Returns nonzero to |
716 | say that only the source line should be printed after this (zero | |
717 | return means print the frame as well as the source line). */ | |
a14ed312 | 718 | extern enum print_stop_action bpstat_print (bpstat); |
c906108c | 719 | |
8671a17b | 720 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
721 | at. *BSP upon return is a bpstat which points to the remaining |
722 | breakpoints stopped at (but which is not guaranteed to be good for | |
723 | anything but further calls to bpstat_num). | |
8671a17b PA |
724 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
725 | Return -1 if stopped at a breakpoint that has been deleted since | |
726 | we set it. | |
727 | Return 1 otherwise. */ | |
728 | extern int bpstat_num (bpstat *, int *); | |
c906108c | 729 | |
347bddb7 PA |
730 | /* Perform actions associated with the stopped inferior. Actually, we |
731 | just use this for breakpoint commands. Perhaps other actions will | |
732 | go here later, but this is executed at a late time (from the | |
733 | command loop). */ | |
734 | extern void bpstat_do_actions (void); | |
c906108c SS |
735 | |
736 | /* Modify BS so that the actions will not be performed. */ | |
a14ed312 | 737 | extern void bpstat_clear_actions (bpstat); |
c906108c | 738 | |
c906108c | 739 | /* Implementation: */ |
e514a9d6 JM |
740 | |
741 | /* Values used to tell the printing routine how to behave for this bpstat. */ | |
742 | enum bp_print_how | |
743 | { | |
744 | /* This is used when we want to do a normal printing of the reason | |
745 | for stopping. The output will depend on the type of eventpoint | |
746 | we are dealing with. This is the default value, most commonly | |
747 | used. */ | |
748 | print_it_normal, | |
749 | /* This is used when nothing should be printed for this bpstat entry. */ | |
750 | print_it_noop, | |
751 | /* This is used when everything which needs to be printed has | |
752 | already been printed. But we still want to print the frame. */ | |
753 | print_it_done | |
754 | }; | |
755 | ||
c906108c | 756 | struct bpstats |
c5aa993b | 757 | { |
f431efe5 PA |
758 | /* Linked list because there can be more than one breakpoint at |
759 | the same place, and a bpstat reflects the fact that all have | |
760 | been hit. */ | |
c5aa993b | 761 | bpstat next; |
f431efe5 PA |
762 | |
763 | /* Location that caused the stop. Locations are refcounted, so | |
764 | this will never be NULL. Note that this location may end up | |
765 | detached from a breakpoint, but that does not necessary mean | |
766 | that the struct breakpoint is gone. E.g., consider a | |
767 | watchpoint with a condition that involves an inferior function | |
768 | call. Watchpoint locations are recreated often (on resumes, | |
769 | hence on infcalls too). Between creating the bpstat and after | |
770 | evaluating the watchpoint condition, this location may hence | |
771 | end up detached from its original owner watchpoint, even though | |
772 | the watchpoint is still listed. If it's condition evaluates as | |
773 | true, we still want this location to cause a stop, and we will | |
774 | still need to know which watchpoint it was originally attached. | |
775 | What this means is that we should not (in most cases) follow | |
776 | the `bpstat->bp_location->owner' link, but instead use the | |
777 | `breakpoint_at' field below. */ | |
778 | struct bp_location *bp_location_at; | |
779 | ||
780 | /* Breakpoint that caused the stop. This is nullified if the | |
781 | breakpoint ends up being deleted. See comments on | |
782 | `bp_location_at' above for why do we need this field instead of | |
783 | following the location's owner. */ | |
784 | struct breakpoint *breakpoint_at; | |
785 | ||
9add0f1b TT |
786 | /* The associated command list. */ |
787 | struct counted_command_line *commands; | |
f431efe5 | 788 | |
9add0f1b TT |
789 | /* Commands left to be done. This points somewhere in |
790 | base_command. */ | |
791 | struct command_line *commands_left; | |
f431efe5 | 792 | |
c5aa993b | 793 | /* Old value associated with a watchpoint. */ |
278cd55f | 794 | struct value *old_val; |
c5aa993b JM |
795 | |
796 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
797 | char print; | |
798 | ||
799 | /* Nonzero if this breakpoint tells us to stop. */ | |
800 | char stop; | |
801 | ||
e514a9d6 JM |
802 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
803 | associated with this element of the bpstat chain. */ | |
804 | enum bp_print_how print_it; | |
c5aa993b | 805 | }; |
c906108c SS |
806 | |
807 | enum inf_context | |
c5aa993b JM |
808 | { |
809 | inf_starting, | |
810 | inf_running, | |
6ca15a4b PA |
811 | inf_exited, |
812 | inf_execd | |
c5aa993b | 813 | }; |
c2c6d25f JM |
814 | |
815 | /* The possible return values for breakpoint_here_p. | |
816 | We guarantee that zero always means "no breakpoint here". */ | |
817 | enum breakpoint_here | |
818 | { | |
819 | no_breakpoint_here = 0, | |
820 | ordinary_breakpoint_here, | |
821 | permanent_breakpoint_here | |
822 | }; | |
c906108c | 823 | \f |
c5aa993b | 824 | |
c906108c SS |
825 | /* Prototypes for breakpoint-related functions. */ |
826 | ||
6c95b8df | 827 | extern enum breakpoint_here breakpoint_here_p (struct address_space *, CORE_ADDR); |
c906108c | 828 | |
6c95b8df | 829 | extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR); |
1c5cfe86 | 830 | |
6c95b8df | 831 | extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c906108c | 832 | |
6c95b8df | 833 | extern int regular_breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c36b740a | 834 | |
6c95b8df | 835 | extern int software_breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
4fa8626c | 836 | |
9093389c PA |
837 | /* Returns true if there's a hardware watchpoint or access watchpoint |
838 | inserted in the range defined by ADDR and LEN. */ | |
839 | extern int hardware_watchpoint_inserted_in_range (struct address_space *, | |
840 | CORE_ADDR addr, | |
841 | ULONGEST len); | |
842 | ||
6c95b8df | 843 | extern int breakpoint_thread_match (struct address_space *, CORE_ADDR, ptid_t); |
c906108c | 844 | |
ae66c1fc | 845 | extern void until_break_command (char *, int, int); |
c906108c | 846 | |
a14ed312 | 847 | extern void breakpoint_re_set (void); |
69de3c6a | 848 | |
a14ed312 | 849 | extern void breakpoint_re_set_thread (struct breakpoint *); |
c906108c | 850 | |
c906108c | 851 | extern struct breakpoint *set_momentary_breakpoint |
a6d9a66e | 852 | (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype); |
c906108c | 853 | |
611c83ae | 854 | extern struct breakpoint *set_momentary_breakpoint_at_pc |
a6d9a66e | 855 | (struct gdbarch *, CORE_ADDR pc, enum bptype type); |
611c83ae | 856 | |
e58b0e63 PA |
857 | extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); |
858 | ||
a14ed312 | 859 | extern void set_ignore_count (int, int, int); |
c906108c | 860 | |
6c95b8df PA |
861 | extern void set_default_breakpoint (int, struct program_space *, |
862 | CORE_ADDR, struct symtab *, int); | |
c906108c | 863 | |
a14ed312 | 864 | extern void breakpoint_init_inferior (enum inf_context); |
c906108c | 865 | |
4d6140d9 AC |
866 | extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); |
867 | ||
a14ed312 | 868 | extern void delete_breakpoint (struct breakpoint *); |
c906108c | 869 | |
a14ed312 | 870 | extern void breakpoint_auto_delete (bpstat); |
c906108c | 871 | |
5cea2a26 PA |
872 | /* Return the chain of command lines to execute when this breakpoint |
873 | is hit. */ | |
874 | extern struct command_line *breakpoint_commands (struct breakpoint *b); | |
875 | ||
a14ed312 | 876 | extern void break_command (char *, int); |
c906108c | 877 | |
a14ed312 KB |
878 | extern void hbreak_command_wrapper (char *, int); |
879 | extern void thbreak_command_wrapper (char *, int); | |
880 | extern void rbreak_command_wrapper (char *, int); | |
84f4c1fe PM |
881 | extern void watch_command_wrapper (char *, int, int); |
882 | extern void awatch_command_wrapper (char *, int, int); | |
883 | extern void rwatch_command_wrapper (char *, int, int); | |
a14ed312 | 884 | extern void tbreak_command (char *, int); |
c906108c | 885 | |
8cdf0e15 VP |
886 | extern int create_breakpoint (struct gdbarch *gdbarch, char *arg, |
887 | char *cond_string, int thread, | |
888 | int parse_condition_and_thread, | |
0fb4aa4b | 889 | int tempflag, enum bptype wanted_type, |
8cdf0e15 VP |
890 | int ignore_count, |
891 | enum auto_boolean pending_break_support, | |
892 | struct breakpoint_ops *ops, | |
893 | int from_tty, | |
84f4c1fe PM |
894 | int enabled, |
895 | int internal); | |
98deb0da | 896 | |
e236ba44 | 897 | extern void insert_breakpoints (void); |
c906108c | 898 | |
a14ed312 | 899 | extern int remove_breakpoints (void); |
c906108c | 900 | |
6c95b8df PA |
901 | extern int remove_breakpoints_pid (int pid); |
902 | ||
c906108c SS |
903 | /* This function can be used to physically insert eventpoints from the |
904 | specified traced inferior process, without modifying the breakpoint | |
905 | package's state. This can be useful for those targets which support | |
906 | following the processes of a fork() or vfork() system call, when both | |
907 | of the resulting two processes are to be followed. */ | |
a14ed312 | 908 | extern int reattach_breakpoints (int); |
c906108c SS |
909 | |
910 | /* This function can be used to update the breakpoint package's state | |
911 | after an exec() system call has been executed. | |
912 | ||
913 | This function causes the following: | |
914 | ||
c5aa993b JM |
915 | - All eventpoints are marked "not inserted". |
916 | - All eventpoints with a symbolic address are reset such that | |
917 | the symbolic address must be reevaluated before the eventpoints | |
918 | can be reinserted. | |
919 | - The solib breakpoints are explicitly removed from the breakpoint | |
920 | list. | |
921 | - A step-resume breakpoint, if any, is explicitly removed from the | |
922 | breakpoint list. | |
923 | - All eventpoints without a symbolic address are removed from the | |
924 | breakpoint list. */ | |
a14ed312 | 925 | extern void update_breakpoints_after_exec (void); |
c906108c SS |
926 | |
927 | /* This function can be used to physically remove hardware breakpoints | |
928 | and watchpoints from the specified traced inferior process, without | |
929 | modifying the breakpoint package's state. This can be useful for | |
930 | those targets which support following the processes of a fork() or | |
931 | vfork() system call, when one of the resulting two processes is to | |
932 | be detached and allowed to run free. | |
c5aa993b | 933 | |
c906108c | 934 | It is an error to use this function on the process whose id is |
39f77062 | 935 | inferior_ptid. */ |
a14ed312 | 936 | extern int detach_breakpoints (int); |
c5aa993b | 937 | |
6c95b8df PA |
938 | /* This function is called when program space PSPACE is about to be |
939 | deleted. It takes care of updating breakpoints to not reference | |
940 | this PSPACE anymore. */ | |
941 | extern void breakpoint_program_space_exit (struct program_space *pspace); | |
942 | ||
186c406b TT |
943 | extern void set_longjmp_breakpoint (struct thread_info *tp, |
944 | struct frame_id frame); | |
611c83ae PA |
945 | extern void delete_longjmp_breakpoint (int thread); |
946 | ||
1900040c MS |
947 | extern void enable_overlay_breakpoints (void); |
948 | extern void disable_overlay_breakpoints (void); | |
c906108c | 949 | |
aa7d318d TT |
950 | extern void set_std_terminate_breakpoint (void); |
951 | extern void delete_std_terminate_breakpoint (void); | |
952 | ||
c906108c SS |
953 | /* These functions respectively disable or reenable all currently |
954 | enabled watchpoints. When disabled, the watchpoints are marked | |
955 | call_disabled. When reenabled, they are marked enabled. | |
956 | ||
04714b91 | 957 | The intended client of these functions is call_function_by_hand. |
c906108c SS |
958 | |
959 | The inferior must be stopped, and all breakpoints removed, when | |
960 | these functions are used. | |
961 | ||
962 | The need for these functions is that on some targets (e.g., HP-UX), | |
963 | gdb is unable to unwind through the dummy frame that is pushed as | |
964 | part of the implementation of a call command. Watchpoints can | |
965 | cause the inferior to stop in places where this frame is visible, | |
966 | and that can cause execution control to become very confused. | |
967 | ||
7e73cedf | 968 | Note that if a user sets breakpoints in an interactively called |
c906108c SS |
969 | function, the call_disabled watchpoints will have been reenabled |
970 | when the first such breakpoint is reached. However, on targets | |
971 | that are unable to unwind through the call dummy frame, watches | |
972 | of stack-based storage may then be deleted, because gdb will | |
973 | believe that their watched storage is out of scope. (Sigh.) */ | |
a14ed312 | 974 | extern void disable_watchpoints_before_interactive_call_start (void); |
c906108c | 975 | |
a14ed312 | 976 | extern void enable_watchpoints_after_interactive_call_stop (void); |
c906108c | 977 | |
8bea4e01 UW |
978 | /* These functions disable and re-enable all breakpoints during |
979 | inferior startup. They are intended to be called from solib | |
980 | code where necessary. This is needed on platforms where the | |
981 | main executable is relocated at some point during startup | |
982 | processing, making breakpoint addresses invalid. | |
983 | ||
984 | If additional breakpoints are created after the routine | |
985 | disable_breakpoints_before_startup but before the routine | |
986 | enable_breakpoints_after_startup was called, they will also | |
987 | be marked as disabled. */ | |
988 | extern void disable_breakpoints_before_startup (void); | |
989 | extern void enable_breakpoints_after_startup (void); | |
990 | ||
40c03ae8 EZ |
991 | /* For script interpreters that need to define breakpoint commands |
992 | after they've already read the commands into a struct command_line. */ | |
993 | extern enum command_control_type commands_from_control_command | |
994 | (char *arg, struct command_line *cmd); | |
c5aa993b | 995 | |
a14ed312 | 996 | extern void clear_breakpoint_hit_counts (void); |
c906108c | 997 | |
a14ed312 | 998 | extern int get_number (char **); |
5c44784c | 999 | |
a14ed312 | 1000 | extern int get_number_or_range (char **); |
5c44784c | 1001 | |
48cb2d85 VP |
1002 | extern struct breakpoint *get_breakpoint (int num); |
1003 | ||
c906108c SS |
1004 | /* The following are for displays, which aren't really breakpoints, but |
1005 | here is as good a place as any for them. */ | |
1006 | ||
a14ed312 | 1007 | extern void disable_current_display (void); |
c906108c | 1008 | |
a14ed312 | 1009 | extern void do_displays (void); |
c906108c | 1010 | |
a14ed312 | 1011 | extern void disable_display (int); |
c906108c | 1012 | |
a14ed312 | 1013 | extern void clear_displays (void); |
c906108c | 1014 | |
a14ed312 | 1015 | extern void disable_breakpoint (struct breakpoint *); |
c906108c | 1016 | |
a14ed312 | 1017 | extern void enable_breakpoint (struct breakpoint *); |
c906108c | 1018 | |
48cb2d85 VP |
1019 | extern void breakpoint_set_commands (struct breakpoint *b, |
1020 | struct command_line *commands); | |
1021 | ||
25b22b0a PA |
1022 | /* Clear the "inserted" flag in all breakpoints. */ |
1023 | extern void mark_breakpoints_out (void); | |
1024 | ||
a14ed312 | 1025 | extern void make_breakpoint_permanent (struct breakpoint *); |
c2c6d25f | 1026 | |
4efc6507 DE |
1027 | extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *, |
1028 | CORE_ADDR); | |
1029 | ||
a6d9a66e UW |
1030 | extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *, |
1031 | CORE_ADDR); | |
c906108c | 1032 | |
a6d9a66e UW |
1033 | extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *, |
1034 | CORE_ADDR); | |
c4093a6a | 1035 | |
a14ed312 | 1036 | extern void remove_solib_event_breakpoints (void); |
c906108c | 1037 | |
a14ed312 | 1038 | extern void remove_thread_event_breakpoints (void); |
c4093a6a | 1039 | |
cb851954 | 1040 | extern void disable_breakpoints_in_shlibs (void); |
c906108c | 1041 | |
c906108c | 1042 | /* This function returns TRUE if ep is a catchpoint. */ |
a14ed312 | 1043 | extern int ep_is_catchpoint (struct breakpoint *); |
c5aa993b | 1044 | |
c2c6d25f JM |
1045 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
1046 | deletes all breakpoints. */ | |
1047 | extern void delete_command (char *arg, int from_tty); | |
1048 | ||
80ce1ecb AC |
1049 | /* Pull all H/W watchpoints from the target. Return non-zero if the |
1050 | remove fails. */ | |
1051 | extern int remove_hw_watchpoints (void); | |
1052 | ||
8181d85f DJ |
1053 | /* Manage a software single step breakpoint (or two). Insert may be called |
1054 | twice before remove is called. */ | |
6c95b8df PA |
1055 | extern void insert_single_step_breakpoint (struct gdbarch *, |
1056 | struct address_space *, CORE_ADDR); | |
f02253f1 | 1057 | extern int single_step_breakpoints_inserted (void); |
8181d85f | 1058 | extern void remove_single_step_breakpoints (void); |
d03285ec | 1059 | extern void cancel_single_step_breakpoints (void); |
8181d85f DJ |
1060 | |
1061 | /* Manage manual breakpoints, separate from the normal chain of | |
1062 | breakpoints. These functions are used in murky target-specific | |
1063 | ways. Please do not add more uses! */ | |
6c95b8df PA |
1064 | extern void *deprecated_insert_raw_breakpoint (struct gdbarch *, |
1065 | struct address_space *, CORE_ADDR); | |
a6d9a66e | 1066 | extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *); |
f83f82bc | 1067 | |
d983da9c DJ |
1068 | /* Check if any hardware watchpoints have triggered, according to the |
1069 | target. */ | |
1070 | int watchpoints_triggered (struct target_waitstatus *); | |
1071 | ||
8defab1a DJ |
1072 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
1073 | by replacing any memory breakpoints with their shadowed contents. */ | |
1074 | void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, | |
1075 | LONGEST len); | |
1076 | ||
74960c60 VP |
1077 | extern int breakpoints_always_inserted_mode (void); |
1078 | ||
20874c92 VP |
1079 | /* Called each time new event from target is processed. |
1080 | Retires previously deleted breakpoint locations that | |
1081 | in our opinion won't ever trigger. */ | |
1082 | extern void breakpoint_retire_moribund (void); | |
1083 | ||
adc36818 PM |
1084 | /* Set break condition of breakpoint B to EXP. */ |
1085 | extern void set_breakpoint_condition (struct breakpoint *b, char *exp, | |
1086 | int from_tty); | |
1087 | ||
a96d9b2e SDJ |
1088 | /* Checks if we are catching syscalls or not. |
1089 | Returns 0 if not, greater than 0 if we are. */ | |
1090 | extern int catch_syscall_enabled (void); | |
1091 | ||
1092 | /* Checks if we are catching syscalls with the specific | |
1093 | syscall_number. Used for "filtering" the catchpoints. | |
1094 | Returns 0 if not, greater than 0 if we are. */ | |
1095 | extern int catching_syscall_number (int syscall_number); | |
1096 | ||
b2175913 MS |
1097 | /* Tell a breakpoint to be quiet. */ |
1098 | extern void make_breakpoint_silent (struct breakpoint *); | |
1099 | ||
1042e4c0 SS |
1100 | /* Return a tracepoint with the given number if found. */ |
1101 | extern struct breakpoint *get_tracepoint (int num); | |
1102 | ||
d5551862 SS |
1103 | extern struct breakpoint *get_tracepoint_by_number_on_target (int num); |
1104 | ||
1042e4c0 SS |
1105 | /* Find a tracepoint by parsing a number in the supplied string. */ |
1106 | extern struct breakpoint *get_tracepoint_by_number (char **arg, int multi_p, | |
1107 | int optional_p); | |
1108 | ||
1109 | /* Return a vector of all tracepoints currently defined. The vector | |
1110 | is newly allocated; the caller should free when done with it. */ | |
1111 | extern VEC(breakpoint_p) *all_tracepoints (void); | |
1112 | ||
d77f58be | 1113 | extern int is_tracepoint (const struct breakpoint *b); |
a7bdde9e | 1114 | |
0fb4aa4b PA |
1115 | /* Return a vector of all static tracepoints defined at ADDR. The |
1116 | vector is newly allocated; the caller should free when done with | |
1117 | it. */ | |
1118 | extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr); | |
1119 | ||
a7bdde9e VP |
1120 | /* Function that can be passed to read_command_line to validate |
1121 | that each command is suitable for tracepoint command list. */ | |
1122 | extern void check_tracepoint_command (char *line, void *closure); | |
1123 | ||
95a42b64 TT |
1124 | /* Call at the start and end of an "rbreak" command to register |
1125 | breakpoint numbers for a later "commands" command. */ | |
1126 | extern void start_rbreak_breakpoints (void); | |
1127 | extern void end_rbreak_breakpoints (void); | |
1128 | ||
84f4c1fe PM |
1129 | /* Breakpoint iterator function. |
1130 | ||
1131 | Calls a callback function once for each breakpoint, so long as the | |
1132 | callback function returns false. If the callback function returns | |
1133 | true, the iteration will end and the current breakpoint will be | |
1134 | returned. This can be useful for implementing a search for a | |
1135 | breakpoint with arbitrary attributes, or for applying an operation | |
1136 | to every breakpoint. */ | |
1137 | extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *, | |
1138 | void *), void *); | |
1139 | ||
c906108c | 1140 | #endif /* !defined (BREAKPOINT_H) */ |