Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Data structures associated with breakpoints in GDB. |
197e01b6 | 2 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
7b6bb8da JB |
3 | 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #if !defined (BREAKPOINT_H) | |
22 | #define BREAKPOINT_H 1 | |
23 | ||
24 | #include "frame.h" | |
25 | #include "value.h" | |
d6e956e5 | 26 | #include "vec.h" |
c906108c | 27 | |
278cd55f | 28 | struct value; |
fe898f56 | 29 | struct block; |
50389644 | 30 | struct breakpoint_object; |
197f0a60 | 31 | struct get_number_or_range_state; |
278cd55f | 32 | |
0e2de366 MS |
33 | /* This is the maximum number of bytes a breakpoint instruction can |
34 | take. Feel free to increase it. It's just used in a few places to | |
35 | size arrays that should be independent of the target | |
36 | architecture. */ | |
c906108c SS |
37 | |
38 | #define BREAKPOINT_MAX 16 | |
39 | \f | |
a96d9b2e SDJ |
40 | |
41 | /* Type of breakpoint. */ | |
0e2de366 MS |
42 | /* FIXME In the future, we should fold all other breakpoint-like |
43 | things into here. This includes: | |
c906108c | 44 | |
0e2de366 MS |
45 | * single-step (for machines where we have to simulate single |
46 | stepping) (probably, though perhaps it is better for it to look as | |
47 | much as possible like a single-step to wait_for_inferior). */ | |
c5aa993b JM |
48 | |
49 | enum bptype | |
50 | { | |
0e2de366 | 51 | bp_none = 0, /* Eventpoint has been deleted */ |
c5aa993b JM |
52 | bp_breakpoint, /* Normal breakpoint */ |
53 | bp_hardware_breakpoint, /* Hardware assisted breakpoint */ | |
54 | bp_until, /* used by until command */ | |
55 | bp_finish, /* used by finish command */ | |
56 | bp_watchpoint, /* Watchpoint */ | |
57 | bp_hardware_watchpoint, /* Hardware assisted watchpoint */ | |
58 | bp_read_watchpoint, /* read watchpoint, (hardware assisted) */ | |
59 | bp_access_watchpoint, /* access watchpoint, (hardware assisted) */ | |
60 | bp_longjmp, /* secret breakpoint to find longjmp() */ | |
61 | bp_longjmp_resume, /* secret breakpoint to escape longjmp() */ | |
62 | ||
186c406b TT |
63 | /* An internal breakpoint that is installed on the unwinder's |
64 | debug hook. */ | |
65 | bp_exception, | |
66 | /* An internal breakpoint that is set at the point where an | |
67 | exception will land. */ | |
68 | bp_exception_resume, | |
69 | ||
0e2de366 MS |
70 | /* Used by wait_for_inferior for stepping over subroutine calls, |
71 | for stepping over signal handlers, and for skipping | |
72 | prologues. */ | |
c5aa993b JM |
73 | bp_step_resume, |
74 | ||
c5aa993b JM |
75 | /* Used to detect when a watchpoint expression has gone out of |
76 | scope. These breakpoints are usually not visible to the user. | |
77 | ||
78 | This breakpoint has some interesting properties: | |
c906108c SS |
79 | |
80 | 1) There's always a 1:1 mapping between watchpoints | |
81 | on local variables and watchpoint_scope breakpoints. | |
82 | ||
83 | 2) It automatically deletes itself and the watchpoint it's | |
84 | associated with when hit. | |
85 | ||
86 | 3) It can never be disabled. */ | |
c5aa993b JM |
87 | bp_watchpoint_scope, |
88 | ||
89 | /* The breakpoint at the end of a call dummy. */ | |
0e2de366 MS |
90 | /* FIXME: What if the function we are calling longjmp()s out of |
91 | the call, or the user gets out with the "return" command? We | |
92 | currently have no way of cleaning up the breakpoint in these | |
93 | (obscure) situations. (Probably can solve this by noticing | |
94 | longjmp, "return", etc., it's similar to noticing when a | |
95 | watchpoint on a local variable goes out of scope (with hardware | |
96 | support for watchpoints)). */ | |
c5aa993b JM |
97 | bp_call_dummy, |
98 | ||
aa7d318d TT |
99 | /* A breakpoint set on std::terminate, that is used to catch |
100 | otherwise uncaught exceptions thrown during an inferior call. */ | |
101 | bp_std_terminate, | |
102 | ||
c5aa993b JM |
103 | /* Some dynamic linkers (HP, maybe Solaris) can arrange for special |
104 | code in the inferior to run when significant events occur in the | |
105 | dynamic linker (for example a library is loaded or unloaded). | |
106 | ||
107 | By placing a breakpoint in this magic code GDB will get control | |
108 | when these significant events occur. GDB can then re-examine | |
109 | the dynamic linker's data structures to discover any newly loaded | |
110 | dynamic libraries. */ | |
111 | bp_shlib_event, | |
112 | ||
c4093a6a JM |
113 | /* Some multi-threaded systems can arrange for a location in the |
114 | inferior to be executed when certain thread-related events occur | |
115 | (such as thread creation or thread death). | |
116 | ||
117 | By placing a breakpoint at one of these locations, GDB will get | |
118 | control when these events occur. GDB can then update its thread | |
119 | lists etc. */ | |
120 | ||
121 | bp_thread_event, | |
122 | ||
1900040c MS |
123 | /* On the same principal, an overlay manager can arrange to call a |
124 | magic location in the inferior whenever there is an interesting | |
125 | change in overlay status. GDB can update its overlay tables | |
126 | and fiddle with breakpoints in overlays when this breakpoint | |
127 | is hit. */ | |
128 | ||
129 | bp_overlay_event, | |
130 | ||
0fd8e87f UW |
131 | /* Master copies of longjmp breakpoints. These are always installed |
132 | as soon as an objfile containing longjmp is loaded, but they are | |
133 | always disabled. While necessary, temporary clones of bp_longjmp | |
134 | type will be created and enabled. */ | |
135 | ||
136 | bp_longjmp_master, | |
137 | ||
aa7d318d TT |
138 | /* Master copies of std::terminate breakpoints. */ |
139 | bp_std_terminate_master, | |
140 | ||
186c406b TT |
141 | /* Like bp_longjmp_master, but for exceptions. */ |
142 | bp_exception_master, | |
143 | ||
ce78b96d | 144 | bp_catchpoint, |
1042e4c0 SS |
145 | |
146 | bp_tracepoint, | |
7a697b8d | 147 | bp_fast_tracepoint, |
0fb4aa4b | 148 | bp_static_tracepoint, |
4efc6507 DE |
149 | |
150 | /* Event for JIT compiled code generation or deletion. */ | |
151 | bp_jit_event, | |
c5aa993b | 152 | }; |
c906108c | 153 | |
0e2de366 | 154 | /* States of enablement of breakpoint. */ |
c906108c | 155 | |
b5de0fa7 | 156 | enum enable_state |
c5aa993b | 157 | { |
0e2de366 MS |
158 | bp_disabled, /* The eventpoint is inactive, and cannot |
159 | trigger. */ | |
160 | bp_enabled, /* The eventpoint is active, and can | |
161 | trigger. */ | |
162 | bp_call_disabled, /* The eventpoint has been disabled while a | |
163 | call into the inferior is "in flight", | |
164 | because some eventpoints interfere with | |
165 | the implementation of a call on some | |
166 | targets. The eventpoint will be | |
167 | automatically enabled and reset when the | |
168 | call "lands" (either completes, or stops | |
169 | at another eventpoint). */ | |
170 | bp_startup_disabled, /* The eventpoint has been disabled during | |
171 | inferior startup. This is necessary on | |
172 | some targets where the main executable | |
173 | will get relocated during startup, making | |
174 | breakpoint addresses invalid. The | |
175 | eventpoint will be automatically enabled | |
176 | and reset once inferior startup is | |
177 | complete. */ | |
178 | bp_permanent /* There is a breakpoint instruction | |
179 | hard-wired into the target's code. Don't | |
180 | try to write another breakpoint | |
181 | instruction on top of it, or restore its | |
182 | value. Step over it using the | |
183 | architecture's SKIP_INSN macro. */ | |
c5aa993b | 184 | }; |
c906108c SS |
185 | |
186 | ||
0e2de366 | 187 | /* Disposition of breakpoint. Ie: what to do after hitting it. */ |
c906108c | 188 | |
c5aa993b JM |
189 | enum bpdisp |
190 | { | |
b5de0fa7 | 191 | disp_del, /* Delete it */ |
0e2de366 MS |
192 | disp_del_at_next_stop, /* Delete at next stop, |
193 | whether hit or not */ | |
b5de0fa7 EZ |
194 | disp_disable, /* Disable it */ |
195 | disp_donttouch /* Leave it alone */ | |
c5aa993b | 196 | }; |
c906108c | 197 | |
53a5351d JM |
198 | enum target_hw_bp_type |
199 | { | |
200 | hw_write = 0, /* Common HW watchpoint */ | |
201 | hw_read = 1, /* Read HW watchpoint */ | |
202 | hw_access = 2, /* Access HW watchpoint */ | |
203 | hw_execute = 3 /* Execute HW breakpoint */ | |
204 | }; | |
205 | ||
8181d85f DJ |
206 | |
207 | /* Information used by targets to insert and remove breakpoints. */ | |
208 | ||
209 | struct bp_target_info | |
210 | { | |
6c95b8df PA |
211 | /* Address space at which the breakpoint was placed. */ |
212 | struct address_space *placed_address_space; | |
213 | ||
8181d85f DJ |
214 | /* Address at which the breakpoint was placed. This is normally the |
215 | same as ADDRESS from the bp_location, except when adjustment | |
3b3b875c | 216 | happens in gdbarch_breakpoint_from_pc. The most common form of |
8181d85f DJ |
217 | adjustment is stripping an alternate ISA marker from the PC which |
218 | is used to determine the type of breakpoint to insert. */ | |
219 | CORE_ADDR placed_address; | |
220 | ||
221 | /* If the breakpoint lives in memory and reading that memory would | |
222 | give back the breakpoint, instead of the original contents, then | |
223 | the original contents are cached here. Only SHADOW_LEN bytes of | |
224 | this buffer are valid, and only when the breakpoint is inserted. */ | |
225 | gdb_byte shadow_contents[BREAKPOINT_MAX]; | |
226 | ||
227 | /* The length of the data cached in SHADOW_CONTENTS. */ | |
228 | int shadow_len; | |
229 | ||
230 | /* The size of the placed breakpoint, according to | |
0e2de366 MS |
231 | gdbarch_breakpoint_from_pc, when the breakpoint was inserted. |
232 | This is generally the same as SHADOW_LEN, unless we did not need | |
8181d85f | 233 | to read from the target to implement the memory breakpoint |
0e2de366 MS |
234 | (e.g. if a remote stub handled the details). We may still need |
235 | the size to remove the breakpoint safely. */ | |
8181d85f DJ |
236 | int placed_size; |
237 | }; | |
238 | ||
5cab636d DJ |
239 | /* GDB maintains two types of information about each breakpoint (or |
240 | watchpoint, or other related event). The first type corresponds | |
241 | to struct breakpoint; this is a relatively high-level structure | |
242 | which contains the source location(s), stopping conditions, user | |
243 | commands to execute when the breakpoint is hit, and so forth. | |
244 | ||
245 | The second type of information corresponds to struct bp_location. | |
246 | Each breakpoint has one or (eventually) more locations associated | |
247 | with it, which represent target-specific and machine-specific | |
248 | mechanisms for stopping the program. For instance, a watchpoint | |
249 | expression may require multiple hardware watchpoints in order to | |
250 | catch all changes in the value of the expression being watched. */ | |
251 | ||
252 | enum bp_loc_type | |
253 | { | |
254 | bp_loc_software_breakpoint, | |
255 | bp_loc_hardware_breakpoint, | |
256 | bp_loc_hardware_watchpoint, | |
257 | bp_loc_other /* Miscellaneous... */ | |
258 | }; | |
259 | ||
260 | struct bp_location | |
261 | { | |
0d381245 VP |
262 | /* Chain pointer to the next breakpoint location for |
263 | the same parent breakpoint. */ | |
7cc221ef DJ |
264 | struct bp_location *next; |
265 | ||
f431efe5 PA |
266 | /* The reference count. */ |
267 | int refc; | |
268 | ||
5cab636d DJ |
269 | /* Type of this breakpoint location. */ |
270 | enum bp_loc_type loc_type; | |
271 | ||
272 | /* Each breakpoint location must belong to exactly one higher-level | |
f431efe5 PA |
273 | breakpoint. This pointer is NULL iff this bp_location is no |
274 | longer attached to a breakpoint. For example, when a breakpoint | |
275 | is deleted, its locations may still be found in the | |
276 | moribund_locations list, or if we had stopped for it, in | |
277 | bpstats. */ | |
5cab636d DJ |
278 | struct breakpoint *owner; |
279 | ||
60e1c644 PA |
280 | /* Conditional. Break only if this expression's value is nonzero. |
281 | Unlike string form of condition, which is associated with | |
282 | breakpoint, this is associated with location, since if breakpoint | |
283 | has several locations, the evaluation of expression can be | |
284 | different for different locations. Only valid for real | |
285 | breakpoints; a watchpoint's conditional expression is stored in | |
286 | the owner breakpoint object. */ | |
511a6cd4 | 287 | struct expression *cond; |
0d381245 VP |
288 | |
289 | /* This location's address is in an unloaded solib, and so this | |
290 | location should not be inserted. It will be automatically | |
291 | enabled when that solib is loaded. */ | |
292 | char shlib_disabled; | |
293 | ||
294 | /* Is this particular location enabled. */ | |
295 | char enabled; | |
511a6cd4 | 296 | |
5cab636d DJ |
297 | /* Nonzero if this breakpoint is now inserted. */ |
298 | char inserted; | |
299 | ||
300 | /* Nonzero if this is not the first breakpoint in the list | |
301 | for the given address. */ | |
302 | char duplicate; | |
303 | ||
304 | /* If we someday support real thread-specific breakpoints, then | |
305 | the breakpoint location will need a thread identifier. */ | |
306 | ||
307 | /* Data for specific breakpoint types. These could be a union, but | |
308 | simplicity is more important than memory usage for breakpoints. */ | |
309 | ||
a6d9a66e UW |
310 | /* Architecture associated with this location's address. May be |
311 | different from the breakpoint architecture. */ | |
312 | struct gdbarch *gdbarch; | |
313 | ||
6c95b8df PA |
314 | /* The program space associated with this breakpoint location |
315 | address. Note that an address space may be represented in more | |
316 | than one program space (e.g. each uClinux program will be given | |
317 | its own program space, but there will only be one address space | |
318 | for all of them), but we must not insert more than one location | |
319 | at the same address in the same address space. */ | |
320 | struct program_space *pspace; | |
321 | ||
5cab636d DJ |
322 | /* Note that zero is a perfectly valid code address on some platforms |
323 | (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL | |
324 | is not a special value for this field. Valid for all types except | |
325 | bp_loc_other. */ | |
326 | CORE_ADDR address; | |
327 | ||
a3be7890 TJB |
328 | /* For hardware watchpoints, the size of the memory region being |
329 | watched. */ | |
a5606eee VP |
330 | int length; |
331 | ||
0e2de366 | 332 | /* Type of hardware watchpoint. */ |
a5606eee VP |
333 | enum target_hw_bp_type watchpoint_type; |
334 | ||
714835d5 | 335 | /* For any breakpoint type with an address, this is the section |
0e2de366 MS |
336 | associated with the address. Used primarily for overlay |
337 | debugging. */ | |
714835d5 | 338 | struct obj_section *section; |
cf3a9e5b | 339 | |
5cab636d DJ |
340 | /* Address at which breakpoint was requested, either by the user or |
341 | by GDB for internal breakpoints. This will usually be the same | |
342 | as ``address'' (above) except for cases in which | |
343 | ADJUST_BREAKPOINT_ADDRESS has computed a different address at | |
344 | which to place the breakpoint in order to comply with a | |
345 | processor's architectual constraints. */ | |
346 | CORE_ADDR requested_address; | |
8181d85f | 347 | |
0d381245 VP |
348 | char *function_name; |
349 | ||
8181d85f DJ |
350 | /* Details of the placed breakpoint, when inserted. */ |
351 | struct bp_target_info target_info; | |
352 | ||
353 | /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */ | |
354 | struct bp_target_info overlay_target_info; | |
20874c92 VP |
355 | |
356 | /* In a non-stop mode, it's possible that we delete a breakpoint, | |
357 | but as we do that, some still running thread hits that breakpoint. | |
358 | For that reason, we need to keep locations belonging to deleted | |
359 | breakpoints for a bit, so that don't report unexpected SIGTRAP. | |
360 | We can't keep such locations forever, so we use a heuristic -- | |
361 | after we process certain number of inferior events since | |
362 | breakpoint was deleted, we retire all locations of that breakpoint. | |
363 | This variable keeps a number of events still to go, when | |
364 | it becomes 0 this location is retired. */ | |
365 | int events_till_retirement; | |
5cab636d DJ |
366 | }; |
367 | ||
3086aeae DJ |
368 | /* This structure is a collection of function pointers that, if available, |
369 | will be called instead of the performing the default action for this | |
370 | bptype. */ | |
371 | ||
77b06cd7 | 372 | struct breakpoint_ops |
3086aeae | 373 | { |
77b06cd7 TJB |
374 | /* Insert the breakpoint or watchpoint or activate the catchpoint. |
375 | Return 0 for success, 1 if the breakpoint, watchpoint or catchpoint | |
376 | type is not supported, -1 for failure. */ | |
377 | int (*insert_location) (struct bp_location *); | |
ce78b96d JB |
378 | |
379 | /* Remove the breakpoint/catchpoint that was previously inserted | |
77b06cd7 TJB |
380 | with the "insert" method above. Return 0 for success, 1 if the |
381 | breakpoint, watchpoint or catchpoint type is not supported, | |
382 | -1 for failure. */ | |
383 | int (*remove_location) (struct bp_location *); | |
ce78b96d JB |
384 | |
385 | /* Return non-zero if the debugger should tell the user that this | |
386 | breakpoint was hit. */ | |
387 | int (*breakpoint_hit) (struct breakpoint *); | |
388 | ||
e09342b5 TJB |
389 | /* Tell how many hardware resources (debug registers) are needed |
390 | for this breakpoint. If this function is not provided, then | |
391 | the breakpoint or watchpoint needs one debug register. */ | |
392 | int (*resources_needed) (const struct bp_location *); | |
393 | ||
3086aeae DJ |
394 | /* The normal print routine for this breakpoint, called when we |
395 | hit it. */ | |
396 | enum print_stop_action (*print_it) (struct breakpoint *); | |
397 | ||
0e2de366 MS |
398 | /* Display information about this breakpoint, for "info |
399 | breakpoints". */ | |
a6d9a66e | 400 | void (*print_one) (struct breakpoint *, struct bp_location **); |
3086aeae | 401 | |
0e2de366 MS |
402 | /* Display information about this breakpoint after setting it |
403 | (roughly speaking; this is called from "mention"). */ | |
3086aeae | 404 | void (*print_mention) (struct breakpoint *); |
6149aea9 PA |
405 | |
406 | /* Print to FP the CLI command that recreates this breakpoint. */ | |
407 | void (*print_recreate) (struct breakpoint *, struct ui_file *fp); | |
3086aeae DJ |
408 | }; |
409 | ||
d983da9c DJ |
410 | enum watchpoint_triggered |
411 | { | |
412 | /* This watchpoint definitely did not trigger. */ | |
413 | watch_triggered_no = 0, | |
414 | ||
415 | /* Some hardware watchpoint triggered, and it might have been this | |
416 | one, but we do not know which it was. */ | |
417 | watch_triggered_unknown, | |
418 | ||
419 | /* This hardware watchpoint definitely did trigger. */ | |
420 | watch_triggered_yes | |
421 | }; | |
422 | ||
a96d9b2e SDJ |
423 | /* This is used to declare the VEC syscalls_to_be_caught. */ |
424 | DEF_VEC_I(int); | |
425 | ||
74960c60 VP |
426 | typedef struct bp_location *bp_location_p; |
427 | DEF_VEC_P(bp_location_p); | |
428 | ||
9add0f1b | 429 | /* A reference-counted struct command_line. This lets multiple |
5cea2a26 PA |
430 | breakpoints share a single command list. This is an implementation |
431 | detail to the breakpoints module. */ | |
432 | struct counted_command_line; | |
9add0f1b | 433 | |
e09342b5 TJB |
434 | /* Some targets (e.g., embedded PowerPC) need two debug registers to set |
435 | a watchpoint over a memory region. If this flag is true, GDB will use | |
436 | only one register per watchpoint, thus assuming that all acesses that | |
437 | modify a memory location happen at its starting address. */ | |
438 | ||
439 | extern int target_exact_watchpoints; | |
440 | ||
c906108c SS |
441 | /* Note that the ->silent field is not currently used by any commands |
442 | (though the code is in there if it was to be, and set_raw_breakpoint | |
443 | does set it to 0). I implemented it because I thought it would be | |
444 | useful for a hack I had to put in; I'm going to leave it in because | |
445 | I can see how there might be times when it would indeed be useful */ | |
446 | ||
447 | /* This is for a breakpoint or a watchpoint. */ | |
448 | ||
449 | struct breakpoint | |
c5aa993b JM |
450 | { |
451 | struct breakpoint *next; | |
0e2de366 | 452 | /* Type of breakpoint. */ |
c5aa993b JM |
453 | enum bptype type; |
454 | /* Zero means disabled; remember the info but don't break here. */ | |
b5de0fa7 | 455 | enum enable_state enable_state; |
0e2de366 | 456 | /* What to do with this breakpoint after we hit it. */ |
c5aa993b JM |
457 | enum bpdisp disposition; |
458 | /* Number assigned to distinguish breakpoints. */ | |
459 | int number; | |
460 | ||
5cab636d DJ |
461 | /* Location(s) associated with this high-level breakpoint. */ |
462 | struct bp_location *loc; | |
76897487 | 463 | |
644a1fe1 | 464 | /* Line number of this address. */ |
c5aa993b JM |
465 | |
466 | int line_number; | |
467 | ||
644a1fe1 | 468 | /* Source file name of this address. */ |
c5aa993b JM |
469 | |
470 | char *source_file; | |
471 | ||
472 | /* Non-zero means a silent breakpoint (don't print frame info | |
0e2de366 | 473 | if we stop here). */ |
c5aa993b | 474 | unsigned char silent; |
56435ebe TT |
475 | /* Non-zero means display ADDR_STRING to the user verbatim. */ |
476 | unsigned char display_canonical; | |
c5aa993b JM |
477 | /* Number of stops at this breakpoint that should |
478 | be continued automatically before really stopping. */ | |
479 | int ignore_count; | |
0e2de366 MS |
480 | /* Chain of command lines to execute when this breakpoint is |
481 | hit. */ | |
9add0f1b | 482 | struct counted_command_line *commands; |
c5aa993b JM |
483 | /* Stack depth (address of frame). If nonzero, break only if fp |
484 | equals this. */ | |
818dd999 | 485 | struct frame_id frame_id; |
c5aa993b | 486 | |
6c95b8df PA |
487 | /* The program space used to set the breakpoint. */ |
488 | struct program_space *pspace; | |
489 | ||
644a1fe1 | 490 | /* String we used to set the breakpoint (malloc'd). */ |
c5aa993b | 491 | char *addr_string; |
a6d9a66e UW |
492 | /* Architecture we used to set the breakpoint. */ |
493 | struct gdbarch *gdbarch; | |
c5aa993b JM |
494 | /* Language we used to set the breakpoint. */ |
495 | enum language language; | |
496 | /* Input radix we used to set the breakpoint. */ | |
497 | int input_radix; | |
0e2de366 MS |
498 | /* String form of the breakpoint condition (malloc'd), or NULL if |
499 | there is no condition. */ | |
c5aa993b | 500 | char *cond_string; |
0e2de366 MS |
501 | /* String form of exp to use for displaying to the user |
502 | (malloc'd), or NULL if none. */ | |
c5aa993b | 503 | char *exp_string; |
d63d0675 JK |
504 | /* String form to use for reparsing of EXP (malloc'd) or NULL. */ |
505 | char *exp_string_reparse; | |
c5aa993b JM |
506 | |
507 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
508 | struct expression *exp; | |
509 | /* The largest block within which it is valid, or NULL if it is | |
510 | valid anywhere (e.g. consists just of global symbols). */ | |
511 | struct block *exp_valid_block; | |
60e1c644 PA |
512 | /* The conditional expression if any. NULL if not a watchpoint. */ |
513 | struct expression *cond_exp; | |
514 | /* The largest block within which it is valid, or NULL if it is | |
515 | valid anywhere (e.g. consists just of global symbols). */ | |
516 | struct block *cond_exp_valid_block; | |
fa4727a6 DJ |
517 | /* Value of the watchpoint the last time we checked it, or NULL |
518 | when we do not know the value yet or the value was not | |
519 | readable. VAL is never lazy. */ | |
278cd55f | 520 | struct value *val; |
fa4727a6 DJ |
521 | /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL, |
522 | then an error occurred reading the value. */ | |
523 | int val_valid; | |
c5aa993b | 524 | |
c5aa993b | 525 | /* Holds the address of the related watchpoint_scope breakpoint |
0e2de366 MS |
526 | when using watchpoints on local variables (might the concept of |
527 | a related breakpoint be useful elsewhere, if not just call it | |
528 | the watchpoint_scope breakpoint or something like that. | |
529 | FIXME). */ | |
c5aa993b JM |
530 | struct breakpoint *related_breakpoint; |
531 | ||
101dcfbe AC |
532 | /* Holds the frame address which identifies the frame this |
533 | watchpoint should be evaluated in, or `null' if the watchpoint | |
534 | should be evaluated on the outermost frame. */ | |
535 | struct frame_id watchpoint_frame; | |
c5aa993b | 536 | |
f6bc2008 PA |
537 | /* Holds the thread which identifies the frame this watchpoint |
538 | should be considered in scope for, or `null_ptid' if the | |
539 | watchpoint should be evaluated in all threads. */ | |
540 | ptid_t watchpoint_thread; | |
541 | ||
d983da9c DJ |
542 | /* For hardware watchpoints, the triggered status according to the |
543 | hardware. */ | |
544 | enum watchpoint_triggered watchpoint_triggered; | |
545 | ||
0e2de366 MS |
546 | /* Thread number for thread-specific breakpoint, |
547 | or -1 if don't care. */ | |
c5aa993b JM |
548 | int thread; |
549 | ||
0e2de366 MS |
550 | /* Ada task number for task-specific breakpoint, |
551 | or 0 if don't care. */ | |
4a306c9a JB |
552 | int task; |
553 | ||
c5aa993b JM |
554 | /* Count of the number of times this breakpoint was taken, dumped |
555 | with the info, but not used for anything else. Useful for | |
556 | seeing how many times you hit a break prior to the program | |
557 | aborting, so you can back up to just before the abort. */ | |
558 | int hit_count; | |
559 | ||
53a5351d | 560 | /* Process id of a child process whose forking triggered this |
7e73cedf | 561 | catchpoint. This field is only valid immediately after this |
53a5351d | 562 | catchpoint has triggered. */ |
3a3e9ee3 | 563 | ptid_t forked_inferior_pid; |
c5aa993b | 564 | |
53a5351d | 565 | /* Filename of a program whose exec triggered this catchpoint. |
7e73cedf | 566 | This field is only valid immediately after this catchpoint has |
53a5351d | 567 | triggered. */ |
c5aa993b JM |
568 | char *exec_pathname; |
569 | ||
0e2de366 MS |
570 | /* Syscall numbers used for the 'catch syscall' feature. If no |
571 | syscall has been specified for filtering, its value is NULL. | |
572 | Otherwise, it holds a list of all syscalls to be caught. The | |
573 | list elements are allocated with xmalloc. */ | |
a96d9b2e SDJ |
574 | VEC(int) *syscalls_to_be_caught; |
575 | ||
3086aeae DJ |
576 | /* Methods associated with this breakpoint. */ |
577 | struct breakpoint_ops *ops; | |
0101ce28 | 578 | |
0d381245 VP |
579 | /* Is breakpoint's condition not yet parsed because we found |
580 | no location initially so had no context to parse | |
581 | the condition in. */ | |
582 | int condition_not_parsed; | |
1042e4c0 SS |
583 | |
584 | /* Number of times this tracepoint should single-step | |
585 | and collect additional data. */ | |
586 | long step_count; | |
587 | ||
588 | /* Number of times this tracepoint should be hit before | |
589 | disabling/ending. */ | |
590 | int pass_count; | |
591 | ||
d5551862 SS |
592 | /* The number of the tracepoint on the target. */ |
593 | int number_on_target; | |
0fb4aa4b PA |
594 | |
595 | /* The static tracepoint marker id, if known. */ | |
596 | char *static_trace_marker_id; | |
597 | ||
598 | /* LTTng/UST allow more than one marker with the same ID string, | |
599 | although it unadvised because it confuses tools. When setting | |
600 | static tracepoints by marker ID, this will record the index in | |
601 | the array of markers we found for the given marker ID for which | |
602 | this static tracepoint corresponds. When resetting | |
603 | breakpoints, we will use this index to try to find the same | |
604 | marker again. */ | |
605 | int static_trace_marker_id_idx; | |
84f4c1fe PM |
606 | |
607 | /* With a Python scripting enabled GDB, store a reference to the | |
608 | Python object that has been associated with this breakpoint. | |
609 | This is always NULL for a GDB that is not script enabled. It | |
610 | can sometimes be NULL for enabled GDBs as not all breakpoint | |
611 | types are tracked by the Python scripting API. */ | |
50389644 | 612 | struct breakpoint_object *py_bp_object; |
e09342b5 TJB |
613 | |
614 | /* Whether this watchpoint is exact (see target_exact_watchpoints). */ | |
615 | int exact; | |
616 | }; | |
d6e956e5 VP |
617 | |
618 | typedef struct breakpoint *breakpoint_p; | |
619 | DEF_VEC_P(breakpoint_p); | |
c906108c | 620 | \f |
53a5351d JM |
621 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
622 | status"). This provides the ability to determine whether we have | |
623 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
624 | |
625 | typedef struct bpstats *bpstat; | |
626 | ||
198757a8 VP |
627 | /* Clears a chain of bpstat, freeing storage |
628 | of each. */ | |
a14ed312 | 629 | extern void bpstat_clear (bpstat *); |
c906108c SS |
630 | |
631 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
632 | is part of the bpstat is copied as well. */ | |
a14ed312 | 633 | extern bpstat bpstat_copy (bpstat); |
c906108c | 634 | |
6c95b8df PA |
635 | extern bpstat bpstat_stop_status (struct address_space *aspace, |
636 | CORE_ADDR pc, ptid_t ptid); | |
c906108c SS |
637 | \f |
638 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
628fe4e4 JK |
639 | breakpoint (a challenging task). |
640 | ||
641 | The enum values order defines priority-like order of the actions. | |
642 | Once you've decided that some action is appropriate, you'll never | |
643 | go back and decide something of a lower priority is better. Each | |
644 | of these actions is mutually exclusive with the others. That | |
645 | means, that if you find yourself adding a new action class here and | |
646 | wanting to tell GDB that you have two simultaneous actions to | |
647 | handle, something is wrong, and you probably don't actually need a | |
648 | new action type. | |
649 | ||
650 | Note that a step resume breakpoint overrides another breakpoint of | |
651 | signal handling (see comment in wait_for_inferior at where we set | |
652 | the step_resume breakpoint). */ | |
c906108c | 653 | |
c5aa993b JM |
654 | enum bpstat_what_main_action |
655 | { | |
656 | /* Perform various other tests; that is, this bpstat does not | |
657 | say to perform any action (e.g. failed watchpoint and nothing | |
658 | else). */ | |
659 | BPSTAT_WHAT_KEEP_CHECKING, | |
660 | ||
c5aa993b | 661 | /* Remove breakpoints, single step once, then put them back in and |
0e2de366 MS |
662 | go back to what we were doing. It's possible that this should |
663 | be removed from the main_action and put into a separate field, | |
664 | to more cleanly handle | |
665 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
c5aa993b JM |
666 | BPSTAT_WHAT_SINGLE, |
667 | ||
668 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
0e2de366 MS |
669 | and continue. The "remove all other breakpoints" part is |
670 | required if we are also stepping over another breakpoint as | |
671 | well as doing the longjmp handling. */ | |
c5aa993b JM |
672 | BPSTAT_WHAT_SET_LONGJMP_RESUME, |
673 | ||
674 | /* Clear longjmp_resume breakpoint, then handle as | |
675 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
676 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
677 | ||
628fe4e4 JK |
678 | /* Rather than distinguish between noisy and silent stops here, it |
679 | might be cleaner to have bpstat_print make that decision (also | |
680 | taking into account stop_print_frame and source_only). But the | |
0e2de366 MS |
681 | implications are a bit scary (interaction with auto-displays, |
682 | etc.), so I won't try it. */ | |
c5aa993b | 683 | |
628fe4e4 JK |
684 | /* Stop silently. */ |
685 | BPSTAT_WHAT_STOP_SILENT, | |
c5aa993b | 686 | |
628fe4e4 JK |
687 | /* Stop and print. */ |
688 | BPSTAT_WHAT_STOP_NOISY, | |
4efc6507 | 689 | |
628fe4e4 JK |
690 | /* Clear step resume breakpoint, and keep checking. */ |
691 | BPSTAT_WHAT_STEP_RESUME, | |
c5aa993b JM |
692 | }; |
693 | ||
aa7d318d TT |
694 | /* An enum indicating the kind of "stack dummy" stop. This is a bit |
695 | of a misnomer because only one kind of truly a stack dummy. */ | |
696 | enum stop_stack_kind | |
697 | { | |
698 | /* We didn't stop at a stack dummy breakpoint. */ | |
699 | STOP_NONE = 0, | |
700 | ||
701 | /* Stopped at a stack dummy. */ | |
702 | STOP_STACK_DUMMY, | |
703 | ||
704 | /* Stopped at std::terminate. */ | |
705 | STOP_STD_TERMINATE | |
706 | }; | |
707 | ||
c5aa993b JM |
708 | struct bpstat_what |
709 | { | |
710 | enum bpstat_what_main_action main_action; | |
711 | ||
0e2de366 MS |
712 | /* Did we hit a call dummy breakpoint? This only goes with a |
713 | main_action of BPSTAT_WHAT_STOP_SILENT or | |
714 | BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call | |
715 | dummy without popping the frame is not a useful one). */ | |
aa7d318d | 716 | enum stop_stack_kind call_dummy; |
186c406b TT |
717 | |
718 | /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and | |
719 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a | |
720 | longjmp, false if we are handling an exception. */ | |
721 | int is_longjmp; | |
c5aa993b | 722 | }; |
c906108c | 723 | |
5c44784c | 724 | /* The possible return values for print_bpstat, print_it_normal, |
0e2de366 | 725 | print_it_done, print_it_noop. */ |
5c44784c JM |
726 | enum print_stop_action |
727 | { | |
728 | PRINT_UNKNOWN = -1, | |
729 | PRINT_SRC_AND_LOC, | |
730 | PRINT_SRC_ONLY, | |
731 | PRINT_NOTHING | |
732 | }; | |
733 | ||
c906108c | 734 | /* Tell what to do about this bpstat. */ |
a14ed312 | 735 | struct bpstat_what bpstat_what (bpstat); |
c906108c | 736 | \f |
0e2de366 | 737 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ |
a14ed312 | 738 | bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *); |
c906108c | 739 | |
c906108c SS |
740 | /* Nonzero if a signal that we got in wait() was due to circumstances |
741 | explained by the BS. */ | |
742 | /* Currently that is true if we have hit a breakpoint, or if there is | |
743 | a watchpoint enabled. */ | |
744 | #define bpstat_explains_signal(bs) ((bs) != NULL) | |
745 | ||
67822962 PA |
746 | /* Nonzero is this bpstat causes a stop. */ |
747 | extern int bpstat_causes_stop (bpstat); | |
748 | ||
c906108c SS |
749 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
750 | without hardware support). This isn't related to a specific bpstat, | |
751 | just to things like whether watchpoints are set. */ | |
a14ed312 | 752 | extern int bpstat_should_step (void); |
c906108c | 753 | |
c906108c SS |
754 | /* Print a message indicating what happened. Returns nonzero to |
755 | say that only the source line should be printed after this (zero | |
756 | return means print the frame as well as the source line). */ | |
a14ed312 | 757 | extern enum print_stop_action bpstat_print (bpstat); |
c906108c | 758 | |
0e2de366 MS |
759 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
760 | stopped at. *BSP upon return is a bpstat which points to the | |
761 | remaining breakpoints stopped at (but which is not guaranteed to be | |
762 | good for anything but further calls to bpstat_num). | |
763 | ||
8671a17b PA |
764 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
765 | Return -1 if stopped at a breakpoint that has been deleted since | |
766 | we set it. | |
767 | Return 1 otherwise. */ | |
768 | extern int bpstat_num (bpstat *, int *); | |
c906108c | 769 | |
347bddb7 PA |
770 | /* Perform actions associated with the stopped inferior. Actually, we |
771 | just use this for breakpoint commands. Perhaps other actions will | |
772 | go here later, but this is executed at a late time (from the | |
773 | command loop). */ | |
774 | extern void bpstat_do_actions (void); | |
c906108c SS |
775 | |
776 | /* Modify BS so that the actions will not be performed. */ | |
a14ed312 | 777 | extern void bpstat_clear_actions (bpstat); |
c906108c | 778 | |
c906108c | 779 | /* Implementation: */ |
e514a9d6 | 780 | |
0e2de366 MS |
781 | /* Values used to tell the printing routine how to behave for this |
782 | bpstat. */ | |
e514a9d6 JM |
783 | enum bp_print_how |
784 | { | |
785 | /* This is used when we want to do a normal printing of the reason | |
0e2de366 MS |
786 | for stopping. The output will depend on the type of eventpoint |
787 | we are dealing with. This is the default value, most commonly | |
788 | used. */ | |
e514a9d6 | 789 | print_it_normal, |
0e2de366 MS |
790 | /* This is used when nothing should be printed for this bpstat |
791 | entry. */ | |
e514a9d6 JM |
792 | print_it_noop, |
793 | /* This is used when everything which needs to be printed has | |
794 | already been printed. But we still want to print the frame. */ | |
795 | print_it_done | |
796 | }; | |
797 | ||
c906108c | 798 | struct bpstats |
c5aa993b | 799 | { |
f431efe5 PA |
800 | /* Linked list because there can be more than one breakpoint at |
801 | the same place, and a bpstat reflects the fact that all have | |
802 | been hit. */ | |
c5aa993b | 803 | bpstat next; |
f431efe5 PA |
804 | |
805 | /* Location that caused the stop. Locations are refcounted, so | |
806 | this will never be NULL. Note that this location may end up | |
807 | detached from a breakpoint, but that does not necessary mean | |
808 | that the struct breakpoint is gone. E.g., consider a | |
809 | watchpoint with a condition that involves an inferior function | |
810 | call. Watchpoint locations are recreated often (on resumes, | |
811 | hence on infcalls too). Between creating the bpstat and after | |
812 | evaluating the watchpoint condition, this location may hence | |
813 | end up detached from its original owner watchpoint, even though | |
814 | the watchpoint is still listed. If it's condition evaluates as | |
815 | true, we still want this location to cause a stop, and we will | |
816 | still need to know which watchpoint it was originally attached. | |
817 | What this means is that we should not (in most cases) follow | |
818 | the `bpstat->bp_location->owner' link, but instead use the | |
819 | `breakpoint_at' field below. */ | |
820 | struct bp_location *bp_location_at; | |
821 | ||
822 | /* Breakpoint that caused the stop. This is nullified if the | |
823 | breakpoint ends up being deleted. See comments on | |
824 | `bp_location_at' above for why do we need this field instead of | |
825 | following the location's owner. */ | |
826 | struct breakpoint *breakpoint_at; | |
827 | ||
9add0f1b TT |
828 | /* The associated command list. */ |
829 | struct counted_command_line *commands; | |
f431efe5 | 830 | |
9add0f1b TT |
831 | /* Commands left to be done. This points somewhere in |
832 | base_command. */ | |
833 | struct command_line *commands_left; | |
f431efe5 | 834 | |
c5aa993b | 835 | /* Old value associated with a watchpoint. */ |
278cd55f | 836 | struct value *old_val; |
c5aa993b JM |
837 | |
838 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
839 | char print; | |
840 | ||
841 | /* Nonzero if this breakpoint tells us to stop. */ | |
842 | char stop; | |
843 | ||
e514a9d6 JM |
844 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
845 | associated with this element of the bpstat chain. */ | |
846 | enum bp_print_how print_it; | |
c5aa993b | 847 | }; |
c906108c SS |
848 | |
849 | enum inf_context | |
c5aa993b JM |
850 | { |
851 | inf_starting, | |
852 | inf_running, | |
6ca15a4b PA |
853 | inf_exited, |
854 | inf_execd | |
c5aa993b | 855 | }; |
c2c6d25f JM |
856 | |
857 | /* The possible return values for breakpoint_here_p. | |
858 | We guarantee that zero always means "no breakpoint here". */ | |
859 | enum breakpoint_here | |
860 | { | |
861 | no_breakpoint_here = 0, | |
862 | ordinary_breakpoint_here, | |
863 | permanent_breakpoint_here | |
864 | }; | |
c906108c | 865 | \f |
c5aa993b | 866 | |
c906108c SS |
867 | /* Prototypes for breakpoint-related functions. */ |
868 | ||
0e2de366 MS |
869 | extern enum breakpoint_here breakpoint_here_p (struct address_space *, |
870 | CORE_ADDR); | |
c906108c | 871 | |
6c95b8df | 872 | extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR); |
1c5cfe86 | 873 | |
6c95b8df | 874 | extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c906108c | 875 | |
0e2de366 MS |
876 | extern int regular_breakpoint_inserted_here_p (struct address_space *, |
877 | CORE_ADDR); | |
c36b740a | 878 | |
0e2de366 MS |
879 | extern int software_breakpoint_inserted_here_p (struct address_space *, |
880 | CORE_ADDR); | |
4fa8626c | 881 | |
9093389c PA |
882 | /* Returns true if there's a hardware watchpoint or access watchpoint |
883 | inserted in the range defined by ADDR and LEN. */ | |
884 | extern int hardware_watchpoint_inserted_in_range (struct address_space *, | |
885 | CORE_ADDR addr, | |
886 | ULONGEST len); | |
887 | ||
0e2de366 MS |
888 | extern int breakpoint_thread_match (struct address_space *, |
889 | CORE_ADDR, ptid_t); | |
c906108c | 890 | |
ae66c1fc | 891 | extern void until_break_command (char *, int, int); |
c906108c | 892 | |
a14ed312 | 893 | extern void breakpoint_re_set (void); |
69de3c6a | 894 | |
a14ed312 | 895 | extern void breakpoint_re_set_thread (struct breakpoint *); |
c906108c | 896 | |
c906108c | 897 | extern struct breakpoint *set_momentary_breakpoint |
a6d9a66e | 898 | (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype); |
c906108c | 899 | |
611c83ae | 900 | extern struct breakpoint *set_momentary_breakpoint_at_pc |
a6d9a66e | 901 | (struct gdbarch *, CORE_ADDR pc, enum bptype type); |
611c83ae | 902 | |
e58b0e63 PA |
903 | extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); |
904 | ||
a14ed312 | 905 | extern void set_ignore_count (int, int, int); |
c906108c | 906 | |
6c95b8df PA |
907 | extern void set_default_breakpoint (int, struct program_space *, |
908 | CORE_ADDR, struct symtab *, int); | |
c906108c | 909 | |
a14ed312 | 910 | extern void breakpoint_init_inferior (enum inf_context); |
c906108c | 911 | |
4d6140d9 AC |
912 | extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); |
913 | ||
a14ed312 | 914 | extern void delete_breakpoint (struct breakpoint *); |
c906108c | 915 | |
a14ed312 | 916 | extern void breakpoint_auto_delete (bpstat); |
c906108c | 917 | |
5cea2a26 PA |
918 | /* Return the chain of command lines to execute when this breakpoint |
919 | is hit. */ | |
920 | extern struct command_line *breakpoint_commands (struct breakpoint *b); | |
921 | ||
a14ed312 | 922 | extern void break_command (char *, int); |
c906108c | 923 | |
a14ed312 KB |
924 | extern void hbreak_command_wrapper (char *, int); |
925 | extern void thbreak_command_wrapper (char *, int); | |
926 | extern void rbreak_command_wrapper (char *, int); | |
84f4c1fe PM |
927 | extern void watch_command_wrapper (char *, int, int); |
928 | extern void awatch_command_wrapper (char *, int, int); | |
929 | extern void rwatch_command_wrapper (char *, int, int); | |
a14ed312 | 930 | extern void tbreak_command (char *, int); |
c906108c | 931 | |
8cdf0e15 VP |
932 | extern int create_breakpoint (struct gdbarch *gdbarch, char *arg, |
933 | char *cond_string, int thread, | |
934 | int parse_condition_and_thread, | |
0fb4aa4b | 935 | int tempflag, enum bptype wanted_type, |
8cdf0e15 VP |
936 | int ignore_count, |
937 | enum auto_boolean pending_break_support, | |
938 | struct breakpoint_ops *ops, | |
939 | int from_tty, | |
84f4c1fe PM |
940 | int enabled, |
941 | int internal); | |
98deb0da | 942 | |
e236ba44 | 943 | extern void insert_breakpoints (void); |
c906108c | 944 | |
a14ed312 | 945 | extern int remove_breakpoints (void); |
c906108c | 946 | |
6c95b8df PA |
947 | extern int remove_breakpoints_pid (int pid); |
948 | ||
c906108c SS |
949 | /* This function can be used to physically insert eventpoints from the |
950 | specified traced inferior process, without modifying the breakpoint | |
0e2de366 MS |
951 | package's state. This can be useful for those targets which |
952 | support following the processes of a fork() or vfork() system call, | |
953 | when both of the resulting two processes are to be followed. */ | |
a14ed312 | 954 | extern int reattach_breakpoints (int); |
c906108c SS |
955 | |
956 | /* This function can be used to update the breakpoint package's state | |
957 | after an exec() system call has been executed. | |
958 | ||
959 | This function causes the following: | |
960 | ||
c5aa993b JM |
961 | - All eventpoints are marked "not inserted". |
962 | - All eventpoints with a symbolic address are reset such that | |
963 | the symbolic address must be reevaluated before the eventpoints | |
964 | can be reinserted. | |
965 | - The solib breakpoints are explicitly removed from the breakpoint | |
966 | list. | |
967 | - A step-resume breakpoint, if any, is explicitly removed from the | |
968 | breakpoint list. | |
969 | - All eventpoints without a symbolic address are removed from the | |
0e2de366 | 970 | breakpoint list. */ |
a14ed312 | 971 | extern void update_breakpoints_after_exec (void); |
c906108c SS |
972 | |
973 | /* This function can be used to physically remove hardware breakpoints | |
974 | and watchpoints from the specified traced inferior process, without | |
975 | modifying the breakpoint package's state. This can be useful for | |
976 | those targets which support following the processes of a fork() or | |
977 | vfork() system call, when one of the resulting two processes is to | |
978 | be detached and allowed to run free. | |
c5aa993b | 979 | |
c906108c | 980 | It is an error to use this function on the process whose id is |
39f77062 | 981 | inferior_ptid. */ |
a14ed312 | 982 | extern int detach_breakpoints (int); |
c5aa993b | 983 | |
6c95b8df PA |
984 | /* This function is called when program space PSPACE is about to be |
985 | deleted. It takes care of updating breakpoints to not reference | |
986 | this PSPACE anymore. */ | |
987 | extern void breakpoint_program_space_exit (struct program_space *pspace); | |
988 | ||
186c406b TT |
989 | extern void set_longjmp_breakpoint (struct thread_info *tp, |
990 | struct frame_id frame); | |
611c83ae PA |
991 | extern void delete_longjmp_breakpoint (int thread); |
992 | ||
1900040c MS |
993 | extern void enable_overlay_breakpoints (void); |
994 | extern void disable_overlay_breakpoints (void); | |
c906108c | 995 | |
aa7d318d TT |
996 | extern void set_std_terminate_breakpoint (void); |
997 | extern void delete_std_terminate_breakpoint (void); | |
998 | ||
c906108c SS |
999 | /* These functions respectively disable or reenable all currently |
1000 | enabled watchpoints. When disabled, the watchpoints are marked | |
1001 | call_disabled. When reenabled, they are marked enabled. | |
1002 | ||
04714b91 | 1003 | The intended client of these functions is call_function_by_hand. |
c906108c SS |
1004 | |
1005 | The inferior must be stopped, and all breakpoints removed, when | |
1006 | these functions are used. | |
1007 | ||
1008 | The need for these functions is that on some targets (e.g., HP-UX), | |
1009 | gdb is unable to unwind through the dummy frame that is pushed as | |
1010 | part of the implementation of a call command. Watchpoints can | |
1011 | cause the inferior to stop in places where this frame is visible, | |
1012 | and that can cause execution control to become very confused. | |
1013 | ||
7e73cedf | 1014 | Note that if a user sets breakpoints in an interactively called |
c906108c SS |
1015 | function, the call_disabled watchpoints will have been reenabled |
1016 | when the first such breakpoint is reached. However, on targets | |
1017 | that are unable to unwind through the call dummy frame, watches | |
1018 | of stack-based storage may then be deleted, because gdb will | |
1019 | believe that their watched storage is out of scope. (Sigh.) */ | |
a14ed312 | 1020 | extern void disable_watchpoints_before_interactive_call_start (void); |
c906108c | 1021 | |
a14ed312 | 1022 | extern void enable_watchpoints_after_interactive_call_stop (void); |
c906108c | 1023 | |
8bea4e01 UW |
1024 | /* These functions disable and re-enable all breakpoints during |
1025 | inferior startup. They are intended to be called from solib | |
1026 | code where necessary. This is needed on platforms where the | |
1027 | main executable is relocated at some point during startup | |
1028 | processing, making breakpoint addresses invalid. | |
1029 | ||
1030 | If additional breakpoints are created after the routine | |
1031 | disable_breakpoints_before_startup but before the routine | |
1032 | enable_breakpoints_after_startup was called, they will also | |
1033 | be marked as disabled. */ | |
1034 | extern void disable_breakpoints_before_startup (void); | |
1035 | extern void enable_breakpoints_after_startup (void); | |
1036 | ||
40c03ae8 | 1037 | /* For script interpreters that need to define breakpoint commands |
0e2de366 MS |
1038 | after they've already read the commands into a struct |
1039 | command_line. */ | |
40c03ae8 EZ |
1040 | extern enum command_control_type commands_from_control_command |
1041 | (char *arg, struct command_line *cmd); | |
c5aa993b | 1042 | |
a14ed312 | 1043 | extern void clear_breakpoint_hit_counts (void); |
c906108c | 1044 | |
48cb2d85 VP |
1045 | extern struct breakpoint *get_breakpoint (int num); |
1046 | ||
0e2de366 MS |
1047 | /* The following are for displays, which aren't really breakpoints, |
1048 | but here is as good a place as any for them. */ | |
c906108c | 1049 | |
a14ed312 | 1050 | extern void disable_current_display (void); |
c906108c | 1051 | |
a14ed312 | 1052 | extern void do_displays (void); |
c906108c | 1053 | |
a14ed312 | 1054 | extern void disable_display (int); |
c906108c | 1055 | |
a14ed312 | 1056 | extern void clear_displays (void); |
c906108c | 1057 | |
a14ed312 | 1058 | extern void disable_breakpoint (struct breakpoint *); |
c906108c | 1059 | |
a14ed312 | 1060 | extern void enable_breakpoint (struct breakpoint *); |
c906108c | 1061 | |
48cb2d85 VP |
1062 | extern void breakpoint_set_commands (struct breakpoint *b, |
1063 | struct command_line *commands); | |
1064 | ||
45a43567 TT |
1065 | extern void breakpoint_set_silent (struct breakpoint *b, int silent); |
1066 | ||
1067 | extern void breakpoint_set_thread (struct breakpoint *b, int thread); | |
1068 | ||
1069 | extern void breakpoint_set_task (struct breakpoint *b, int task); | |
1070 | ||
25b22b0a PA |
1071 | /* Clear the "inserted" flag in all breakpoints. */ |
1072 | extern void mark_breakpoints_out (void); | |
1073 | ||
a14ed312 | 1074 | extern void make_breakpoint_permanent (struct breakpoint *); |
c2c6d25f | 1075 | |
4efc6507 DE |
1076 | extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *, |
1077 | CORE_ADDR); | |
1078 | ||
a6d9a66e UW |
1079 | extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *, |
1080 | CORE_ADDR); | |
c906108c | 1081 | |
a6d9a66e UW |
1082 | extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *, |
1083 | CORE_ADDR); | |
c4093a6a | 1084 | |
03673fc7 PP |
1085 | extern void remove_jit_event_breakpoints (void); |
1086 | ||
a14ed312 | 1087 | extern void remove_solib_event_breakpoints (void); |
c906108c | 1088 | |
a14ed312 | 1089 | extern void remove_thread_event_breakpoints (void); |
c4093a6a | 1090 | |
cb851954 | 1091 | extern void disable_breakpoints_in_shlibs (void); |
c906108c | 1092 | |
0e2de366 | 1093 | /* This function returns TRUE if ep is a catchpoint. */ |
a14ed312 | 1094 | extern int ep_is_catchpoint (struct breakpoint *); |
c5aa993b | 1095 | |
c2c6d25f | 1096 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
0e2de366 | 1097 | deletes all breakpoints. */ |
c2c6d25f JM |
1098 | extern void delete_command (char *arg, int from_tty); |
1099 | ||
0e2de366 MS |
1100 | /* Pull all H/W watchpoints from the target. Return non-zero if the |
1101 | remove fails. */ | |
80ce1ecb AC |
1102 | extern int remove_hw_watchpoints (void); |
1103 | ||
0e2de366 MS |
1104 | /* Manage a software single step breakpoint (or two). Insert may be |
1105 | called twice before remove is called. */ | |
6c95b8df | 1106 | extern void insert_single_step_breakpoint (struct gdbarch *, |
0e2de366 MS |
1107 | struct address_space *, |
1108 | CORE_ADDR); | |
f02253f1 | 1109 | extern int single_step_breakpoints_inserted (void); |
8181d85f | 1110 | extern void remove_single_step_breakpoints (void); |
d03285ec | 1111 | extern void cancel_single_step_breakpoints (void); |
8181d85f DJ |
1112 | |
1113 | /* Manage manual breakpoints, separate from the normal chain of | |
1114 | breakpoints. These functions are used in murky target-specific | |
1115 | ways. Please do not add more uses! */ | |
6c95b8df | 1116 | extern void *deprecated_insert_raw_breakpoint (struct gdbarch *, |
0e2de366 MS |
1117 | struct address_space *, |
1118 | CORE_ADDR); | |
a6d9a66e | 1119 | extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *); |
f83f82bc | 1120 | |
d983da9c DJ |
1121 | /* Check if any hardware watchpoints have triggered, according to the |
1122 | target. */ | |
1123 | int watchpoints_triggered (struct target_waitstatus *); | |
1124 | ||
8defab1a DJ |
1125 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
1126 | by replacing any memory breakpoints with their shadowed contents. */ | |
1127 | void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, | |
1128 | LONGEST len); | |
1129 | ||
74960c60 VP |
1130 | extern int breakpoints_always_inserted_mode (void); |
1131 | ||
20874c92 VP |
1132 | /* Called each time new event from target is processed. |
1133 | Retires previously deleted breakpoint locations that | |
1134 | in our opinion won't ever trigger. */ | |
1135 | extern void breakpoint_retire_moribund (void); | |
1136 | ||
adc36818 PM |
1137 | /* Set break condition of breakpoint B to EXP. */ |
1138 | extern void set_breakpoint_condition (struct breakpoint *b, char *exp, | |
1139 | int from_tty); | |
1140 | ||
a96d9b2e SDJ |
1141 | /* Checks if we are catching syscalls or not. |
1142 | Returns 0 if not, greater than 0 if we are. */ | |
1143 | extern int catch_syscall_enabled (void); | |
1144 | ||
1145 | /* Checks if we are catching syscalls with the specific | |
1146 | syscall_number. Used for "filtering" the catchpoints. | |
1147 | Returns 0 if not, greater than 0 if we are. */ | |
1148 | extern int catching_syscall_number (int syscall_number); | |
1149 | ||
1042e4c0 SS |
1150 | /* Return a tracepoint with the given number if found. */ |
1151 | extern struct breakpoint *get_tracepoint (int num); | |
1152 | ||
d5551862 SS |
1153 | extern struct breakpoint *get_tracepoint_by_number_on_target (int num); |
1154 | ||
1042e4c0 | 1155 | /* Find a tracepoint by parsing a number in the supplied string. */ |
197f0a60 TT |
1156 | extern struct breakpoint * |
1157 | get_tracepoint_by_number (char **arg, | |
1158 | struct get_number_or_range_state *state, | |
1159 | int optional_p); | |
1042e4c0 SS |
1160 | |
1161 | /* Return a vector of all tracepoints currently defined. The vector | |
1162 | is newly allocated; the caller should free when done with it. */ | |
1163 | extern VEC(breakpoint_p) *all_tracepoints (void); | |
1164 | ||
d77f58be | 1165 | extern int is_tracepoint (const struct breakpoint *b); |
a7bdde9e | 1166 | |
0fb4aa4b PA |
1167 | /* Return a vector of all static tracepoints defined at ADDR. The |
1168 | vector is newly allocated; the caller should free when done with | |
1169 | it. */ | |
1170 | extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr); | |
1171 | ||
a7bdde9e VP |
1172 | /* Function that can be passed to read_command_line to validate |
1173 | that each command is suitable for tracepoint command list. */ | |
1174 | extern void check_tracepoint_command (char *line, void *closure); | |
1175 | ||
95a42b64 TT |
1176 | /* Call at the start and end of an "rbreak" command to register |
1177 | breakpoint numbers for a later "commands" command. */ | |
1178 | extern void start_rbreak_breakpoints (void); | |
1179 | extern void end_rbreak_breakpoints (void); | |
1180 | ||
84f4c1fe PM |
1181 | /* Breakpoint iterator function. |
1182 | ||
1183 | Calls a callback function once for each breakpoint, so long as the | |
1184 | callback function returns false. If the callback function returns | |
1185 | true, the iteration will end and the current breakpoint will be | |
1186 | returned. This can be useful for implementing a search for a | |
1187 | breakpoint with arbitrary attributes, or for applying an operation | |
1188 | to every breakpoint. */ | |
1189 | extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *, | |
1190 | void *), void *); | |
1191 | ||
09d682a4 TT |
1192 | extern int user_breakpoint_p (struct breakpoint *); |
1193 | ||
c906108c | 1194 | #endif /* !defined (BREAKPOINT_H) */ |