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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, |
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 JM |
474 | unsigned char silent; |
475 | /* Number of stops at this breakpoint that should | |
476 | be continued automatically before really stopping. */ | |
477 | int ignore_count; | |
0e2de366 MS |
478 | /* Chain of command lines to execute when this breakpoint is |
479 | hit. */ | |
9add0f1b | 480 | struct counted_command_line *commands; |
c5aa993b JM |
481 | /* Stack depth (address of frame). If nonzero, break only if fp |
482 | equals this. */ | |
818dd999 | 483 | struct frame_id frame_id; |
c5aa993b | 484 | |
6c95b8df PA |
485 | /* The program space used to set the breakpoint. */ |
486 | struct program_space *pspace; | |
487 | ||
644a1fe1 | 488 | /* String we used to set the breakpoint (malloc'd). */ |
c5aa993b | 489 | char *addr_string; |
a6d9a66e UW |
490 | /* Architecture we used to set the breakpoint. */ |
491 | struct gdbarch *gdbarch; | |
c5aa993b JM |
492 | /* Language we used to set the breakpoint. */ |
493 | enum language language; | |
494 | /* Input radix we used to set the breakpoint. */ | |
495 | int input_radix; | |
0e2de366 MS |
496 | /* String form of the breakpoint condition (malloc'd), or NULL if |
497 | there is no condition. */ | |
c5aa993b | 498 | char *cond_string; |
0e2de366 MS |
499 | /* String form of exp to use for displaying to the user |
500 | (malloc'd), or NULL if none. */ | |
c5aa993b | 501 | char *exp_string; |
d63d0675 JK |
502 | /* String form to use for reparsing of EXP (malloc'd) or NULL. */ |
503 | char *exp_string_reparse; | |
c5aa993b JM |
504 | |
505 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
506 | struct expression *exp; | |
507 | /* The largest block within which it is valid, or NULL if it is | |
508 | valid anywhere (e.g. consists just of global symbols). */ | |
509 | struct block *exp_valid_block; | |
60e1c644 PA |
510 | /* The conditional expression if any. NULL if not a watchpoint. */ |
511 | struct expression *cond_exp; | |
512 | /* The largest block within which it is valid, or NULL if it is | |
513 | valid anywhere (e.g. consists just of global symbols). */ | |
514 | struct block *cond_exp_valid_block; | |
fa4727a6 DJ |
515 | /* Value of the watchpoint the last time we checked it, or NULL |
516 | when we do not know the value yet or the value was not | |
517 | readable. VAL is never lazy. */ | |
278cd55f | 518 | struct value *val; |
fa4727a6 DJ |
519 | /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL, |
520 | then an error occurred reading the value. */ | |
521 | int val_valid; | |
c5aa993b | 522 | |
c5aa993b | 523 | /* Holds the address of the related watchpoint_scope breakpoint |
0e2de366 MS |
524 | when using watchpoints on local variables (might the concept of |
525 | a related breakpoint be useful elsewhere, if not just call it | |
526 | the watchpoint_scope breakpoint or something like that. | |
527 | FIXME). */ | |
c5aa993b JM |
528 | struct breakpoint *related_breakpoint; |
529 | ||
101dcfbe AC |
530 | /* Holds the frame address which identifies the frame this |
531 | watchpoint should be evaluated in, or `null' if the watchpoint | |
532 | should be evaluated on the outermost frame. */ | |
533 | struct frame_id watchpoint_frame; | |
c5aa993b | 534 | |
f6bc2008 PA |
535 | /* Holds the thread which identifies the frame this watchpoint |
536 | should be considered in scope for, or `null_ptid' if the | |
537 | watchpoint should be evaluated in all threads. */ | |
538 | ptid_t watchpoint_thread; | |
539 | ||
d983da9c DJ |
540 | /* For hardware watchpoints, the triggered status according to the |
541 | hardware. */ | |
542 | enum watchpoint_triggered watchpoint_triggered; | |
543 | ||
0e2de366 MS |
544 | /* Thread number for thread-specific breakpoint, |
545 | or -1 if don't care. */ | |
c5aa993b JM |
546 | int thread; |
547 | ||
0e2de366 MS |
548 | /* Ada task number for task-specific breakpoint, |
549 | or 0 if don't care. */ | |
4a306c9a JB |
550 | int task; |
551 | ||
c5aa993b JM |
552 | /* Count of the number of times this breakpoint was taken, dumped |
553 | with the info, but not used for anything else. Useful for | |
554 | seeing how many times you hit a break prior to the program | |
555 | aborting, so you can back up to just before the abort. */ | |
556 | int hit_count; | |
557 | ||
53a5351d | 558 | /* Process id of a child process whose forking triggered this |
7e73cedf | 559 | catchpoint. This field is only valid immediately after this |
53a5351d | 560 | catchpoint has triggered. */ |
3a3e9ee3 | 561 | ptid_t forked_inferior_pid; |
c5aa993b | 562 | |
53a5351d | 563 | /* Filename of a program whose exec triggered this catchpoint. |
7e73cedf | 564 | This field is only valid immediately after this catchpoint has |
53a5351d | 565 | triggered. */ |
c5aa993b JM |
566 | char *exec_pathname; |
567 | ||
0e2de366 MS |
568 | /* Syscall numbers used for the 'catch syscall' feature. If no |
569 | syscall has been specified for filtering, its value is NULL. | |
570 | Otherwise, it holds a list of all syscalls to be caught. The | |
571 | list elements are allocated with xmalloc. */ | |
a96d9b2e SDJ |
572 | VEC(int) *syscalls_to_be_caught; |
573 | ||
3086aeae DJ |
574 | /* Methods associated with this breakpoint. */ |
575 | struct breakpoint_ops *ops; | |
0101ce28 | 576 | |
0d381245 VP |
577 | /* Is breakpoint's condition not yet parsed because we found |
578 | no location initially so had no context to parse | |
579 | the condition in. */ | |
580 | int condition_not_parsed; | |
1042e4c0 SS |
581 | |
582 | /* Number of times this tracepoint should single-step | |
583 | and collect additional data. */ | |
584 | long step_count; | |
585 | ||
586 | /* Number of times this tracepoint should be hit before | |
587 | disabling/ending. */ | |
588 | int pass_count; | |
589 | ||
d5551862 SS |
590 | /* The number of the tracepoint on the target. */ |
591 | int number_on_target; | |
0fb4aa4b PA |
592 | |
593 | /* The static tracepoint marker id, if known. */ | |
594 | char *static_trace_marker_id; | |
595 | ||
596 | /* LTTng/UST allow more than one marker with the same ID string, | |
597 | although it unadvised because it confuses tools. When setting | |
598 | static tracepoints by marker ID, this will record the index in | |
599 | the array of markers we found for the given marker ID for which | |
600 | this static tracepoint corresponds. When resetting | |
601 | breakpoints, we will use this index to try to find the same | |
602 | marker again. */ | |
603 | int static_trace_marker_id_idx; | |
84f4c1fe PM |
604 | |
605 | /* With a Python scripting enabled GDB, store a reference to the | |
606 | Python object that has been associated with this breakpoint. | |
607 | This is always NULL for a GDB that is not script enabled. It | |
608 | can sometimes be NULL for enabled GDBs as not all breakpoint | |
609 | types are tracked by the Python scripting API. */ | |
50389644 | 610 | struct breakpoint_object *py_bp_object; |
e09342b5 TJB |
611 | |
612 | /* Whether this watchpoint is exact (see target_exact_watchpoints). */ | |
613 | int exact; | |
614 | }; | |
d6e956e5 VP |
615 | |
616 | typedef struct breakpoint *breakpoint_p; | |
617 | DEF_VEC_P(breakpoint_p); | |
c906108c | 618 | \f |
53a5351d JM |
619 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
620 | status"). This provides the ability to determine whether we have | |
621 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
622 | |
623 | typedef struct bpstats *bpstat; | |
624 | ||
198757a8 VP |
625 | /* Clears a chain of bpstat, freeing storage |
626 | of each. */ | |
a14ed312 | 627 | extern void bpstat_clear (bpstat *); |
c906108c SS |
628 | |
629 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
630 | is part of the bpstat is copied as well. */ | |
a14ed312 | 631 | extern bpstat bpstat_copy (bpstat); |
c906108c | 632 | |
6c95b8df PA |
633 | extern bpstat bpstat_stop_status (struct address_space *aspace, |
634 | CORE_ADDR pc, ptid_t ptid); | |
c906108c SS |
635 | \f |
636 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
628fe4e4 JK |
637 | breakpoint (a challenging task). |
638 | ||
639 | The enum values order defines priority-like order of the actions. | |
640 | Once you've decided that some action is appropriate, you'll never | |
641 | go back and decide something of a lower priority is better. Each | |
642 | of these actions is mutually exclusive with the others. That | |
643 | means, that if you find yourself adding a new action class here and | |
644 | wanting to tell GDB that you have two simultaneous actions to | |
645 | handle, something is wrong, and you probably don't actually need a | |
646 | new action type. | |
647 | ||
648 | Note that a step resume breakpoint overrides another breakpoint of | |
649 | signal handling (see comment in wait_for_inferior at where we set | |
650 | the step_resume breakpoint). */ | |
c906108c | 651 | |
c5aa993b JM |
652 | enum bpstat_what_main_action |
653 | { | |
654 | /* Perform various other tests; that is, this bpstat does not | |
655 | say to perform any action (e.g. failed watchpoint and nothing | |
656 | else). */ | |
657 | BPSTAT_WHAT_KEEP_CHECKING, | |
658 | ||
c5aa993b | 659 | /* Remove breakpoints, single step once, then put them back in and |
0e2de366 MS |
660 | go back to what we were doing. It's possible that this should |
661 | be removed from the main_action and put into a separate field, | |
662 | to more cleanly handle | |
663 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
c5aa993b JM |
664 | BPSTAT_WHAT_SINGLE, |
665 | ||
666 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
0e2de366 MS |
667 | and continue. The "remove all other breakpoints" part is |
668 | required if we are also stepping over another breakpoint as | |
669 | well as doing the longjmp handling. */ | |
c5aa993b JM |
670 | BPSTAT_WHAT_SET_LONGJMP_RESUME, |
671 | ||
672 | /* Clear longjmp_resume breakpoint, then handle as | |
673 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
674 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
675 | ||
628fe4e4 JK |
676 | /* Rather than distinguish between noisy and silent stops here, it |
677 | might be cleaner to have bpstat_print make that decision (also | |
678 | taking into account stop_print_frame and source_only). But the | |
0e2de366 MS |
679 | implications are a bit scary (interaction with auto-displays, |
680 | etc.), so I won't try it. */ | |
c5aa993b | 681 | |
628fe4e4 JK |
682 | /* Stop silently. */ |
683 | BPSTAT_WHAT_STOP_SILENT, | |
c5aa993b | 684 | |
628fe4e4 JK |
685 | /* Stop and print. */ |
686 | BPSTAT_WHAT_STOP_NOISY, | |
4efc6507 | 687 | |
628fe4e4 JK |
688 | /* Clear step resume breakpoint, and keep checking. */ |
689 | BPSTAT_WHAT_STEP_RESUME, | |
c5aa993b JM |
690 | }; |
691 | ||
aa7d318d TT |
692 | /* An enum indicating the kind of "stack dummy" stop. This is a bit |
693 | of a misnomer because only one kind of truly a stack dummy. */ | |
694 | enum stop_stack_kind | |
695 | { | |
696 | /* We didn't stop at a stack dummy breakpoint. */ | |
697 | STOP_NONE = 0, | |
698 | ||
699 | /* Stopped at a stack dummy. */ | |
700 | STOP_STACK_DUMMY, | |
701 | ||
702 | /* Stopped at std::terminate. */ | |
703 | STOP_STD_TERMINATE | |
704 | }; | |
705 | ||
c5aa993b JM |
706 | struct bpstat_what |
707 | { | |
708 | enum bpstat_what_main_action main_action; | |
709 | ||
0e2de366 MS |
710 | /* Did we hit a call dummy breakpoint? This only goes with a |
711 | main_action of BPSTAT_WHAT_STOP_SILENT or | |
712 | BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call | |
713 | dummy without popping the frame is not a useful one). */ | |
aa7d318d | 714 | enum stop_stack_kind call_dummy; |
186c406b TT |
715 | |
716 | /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and | |
717 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a | |
718 | longjmp, false if we are handling an exception. */ | |
719 | int is_longjmp; | |
c5aa993b | 720 | }; |
c906108c | 721 | |
5c44784c | 722 | /* The possible return values for print_bpstat, print_it_normal, |
0e2de366 | 723 | print_it_done, print_it_noop. */ |
5c44784c JM |
724 | enum print_stop_action |
725 | { | |
726 | PRINT_UNKNOWN = -1, | |
727 | PRINT_SRC_AND_LOC, | |
728 | PRINT_SRC_ONLY, | |
729 | PRINT_NOTHING | |
730 | }; | |
731 | ||
c906108c | 732 | /* Tell what to do about this bpstat. */ |
a14ed312 | 733 | struct bpstat_what bpstat_what (bpstat); |
c906108c | 734 | \f |
0e2de366 | 735 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ |
a14ed312 | 736 | bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *); |
c906108c | 737 | |
c906108c SS |
738 | /* Nonzero if a signal that we got in wait() was due to circumstances |
739 | explained by the BS. */ | |
740 | /* Currently that is true if we have hit a breakpoint, or if there is | |
741 | a watchpoint enabled. */ | |
742 | #define bpstat_explains_signal(bs) ((bs) != NULL) | |
743 | ||
67822962 PA |
744 | /* Nonzero is this bpstat causes a stop. */ |
745 | extern int bpstat_causes_stop (bpstat); | |
746 | ||
c906108c SS |
747 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
748 | without hardware support). This isn't related to a specific bpstat, | |
749 | just to things like whether watchpoints are set. */ | |
a14ed312 | 750 | extern int bpstat_should_step (void); |
c906108c | 751 | |
c906108c SS |
752 | /* Print a message indicating what happened. Returns nonzero to |
753 | say that only the source line should be printed after this (zero | |
754 | return means print the frame as well as the source line). */ | |
a14ed312 | 755 | extern enum print_stop_action bpstat_print (bpstat); |
c906108c | 756 | |
0e2de366 MS |
757 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
758 | stopped at. *BSP upon return is a bpstat which points to the | |
759 | remaining breakpoints stopped at (but which is not guaranteed to be | |
760 | good for anything but further calls to bpstat_num). | |
761 | ||
8671a17b PA |
762 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
763 | Return -1 if stopped at a breakpoint that has been deleted since | |
764 | we set it. | |
765 | Return 1 otherwise. */ | |
766 | extern int bpstat_num (bpstat *, int *); | |
c906108c | 767 | |
347bddb7 PA |
768 | /* Perform actions associated with the stopped inferior. Actually, we |
769 | just use this for breakpoint commands. Perhaps other actions will | |
770 | go here later, but this is executed at a late time (from the | |
771 | command loop). */ | |
772 | extern void bpstat_do_actions (void); | |
c906108c SS |
773 | |
774 | /* Modify BS so that the actions will not be performed. */ | |
a14ed312 | 775 | extern void bpstat_clear_actions (bpstat); |
c906108c | 776 | |
c906108c | 777 | /* Implementation: */ |
e514a9d6 | 778 | |
0e2de366 MS |
779 | /* Values used to tell the printing routine how to behave for this |
780 | bpstat. */ | |
e514a9d6 JM |
781 | enum bp_print_how |
782 | { | |
783 | /* This is used when we want to do a normal printing of the reason | |
0e2de366 MS |
784 | for stopping. The output will depend on the type of eventpoint |
785 | we are dealing with. This is the default value, most commonly | |
786 | used. */ | |
e514a9d6 | 787 | print_it_normal, |
0e2de366 MS |
788 | /* This is used when nothing should be printed for this bpstat |
789 | entry. */ | |
e514a9d6 JM |
790 | print_it_noop, |
791 | /* This is used when everything which needs to be printed has | |
792 | already been printed. But we still want to print the frame. */ | |
793 | print_it_done | |
794 | }; | |
795 | ||
c906108c | 796 | struct bpstats |
c5aa993b | 797 | { |
f431efe5 PA |
798 | /* Linked list because there can be more than one breakpoint at |
799 | the same place, and a bpstat reflects the fact that all have | |
800 | been hit. */ | |
c5aa993b | 801 | bpstat next; |
f431efe5 PA |
802 | |
803 | /* Location that caused the stop. Locations are refcounted, so | |
804 | this will never be NULL. Note that this location may end up | |
805 | detached from a breakpoint, but that does not necessary mean | |
806 | that the struct breakpoint is gone. E.g., consider a | |
807 | watchpoint with a condition that involves an inferior function | |
808 | call. Watchpoint locations are recreated often (on resumes, | |
809 | hence on infcalls too). Between creating the bpstat and after | |
810 | evaluating the watchpoint condition, this location may hence | |
811 | end up detached from its original owner watchpoint, even though | |
812 | the watchpoint is still listed. If it's condition evaluates as | |
813 | true, we still want this location to cause a stop, and we will | |
814 | still need to know which watchpoint it was originally attached. | |
815 | What this means is that we should not (in most cases) follow | |
816 | the `bpstat->bp_location->owner' link, but instead use the | |
817 | `breakpoint_at' field below. */ | |
818 | struct bp_location *bp_location_at; | |
819 | ||
820 | /* Breakpoint that caused the stop. This is nullified if the | |
821 | breakpoint ends up being deleted. See comments on | |
822 | `bp_location_at' above for why do we need this field instead of | |
823 | following the location's owner. */ | |
824 | struct breakpoint *breakpoint_at; | |
825 | ||
9add0f1b TT |
826 | /* The associated command list. */ |
827 | struct counted_command_line *commands; | |
f431efe5 | 828 | |
9add0f1b TT |
829 | /* Commands left to be done. This points somewhere in |
830 | base_command. */ | |
831 | struct command_line *commands_left; | |
f431efe5 | 832 | |
c5aa993b | 833 | /* Old value associated with a watchpoint. */ |
278cd55f | 834 | struct value *old_val; |
c5aa993b JM |
835 | |
836 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
837 | char print; | |
838 | ||
839 | /* Nonzero if this breakpoint tells us to stop. */ | |
840 | char stop; | |
841 | ||
e514a9d6 JM |
842 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
843 | associated with this element of the bpstat chain. */ | |
844 | enum bp_print_how print_it; | |
c5aa993b | 845 | }; |
c906108c SS |
846 | |
847 | enum inf_context | |
c5aa993b JM |
848 | { |
849 | inf_starting, | |
850 | inf_running, | |
6ca15a4b PA |
851 | inf_exited, |
852 | inf_execd | |
c5aa993b | 853 | }; |
c2c6d25f JM |
854 | |
855 | /* The possible return values for breakpoint_here_p. | |
856 | We guarantee that zero always means "no breakpoint here". */ | |
857 | enum breakpoint_here | |
858 | { | |
859 | no_breakpoint_here = 0, | |
860 | ordinary_breakpoint_here, | |
861 | permanent_breakpoint_here | |
862 | }; | |
c906108c | 863 | \f |
c5aa993b | 864 | |
c906108c SS |
865 | /* Prototypes for breakpoint-related functions. */ |
866 | ||
0e2de366 MS |
867 | extern enum breakpoint_here breakpoint_here_p (struct address_space *, |
868 | CORE_ADDR); | |
c906108c | 869 | |
6c95b8df | 870 | extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR); |
1c5cfe86 | 871 | |
6c95b8df | 872 | extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR); |
c906108c | 873 | |
0e2de366 MS |
874 | extern int regular_breakpoint_inserted_here_p (struct address_space *, |
875 | CORE_ADDR); | |
c36b740a | 876 | |
0e2de366 MS |
877 | extern int software_breakpoint_inserted_here_p (struct address_space *, |
878 | CORE_ADDR); | |
4fa8626c | 879 | |
9093389c PA |
880 | /* Returns true if there's a hardware watchpoint or access watchpoint |
881 | inserted in the range defined by ADDR and LEN. */ | |
882 | extern int hardware_watchpoint_inserted_in_range (struct address_space *, | |
883 | CORE_ADDR addr, | |
884 | ULONGEST len); | |
885 | ||
0e2de366 MS |
886 | extern int breakpoint_thread_match (struct address_space *, |
887 | CORE_ADDR, ptid_t); | |
c906108c | 888 | |
ae66c1fc | 889 | extern void until_break_command (char *, int, int); |
c906108c | 890 | |
a14ed312 | 891 | extern void breakpoint_re_set (void); |
69de3c6a | 892 | |
a14ed312 | 893 | extern void breakpoint_re_set_thread (struct breakpoint *); |
c906108c | 894 | |
c906108c | 895 | extern struct breakpoint *set_momentary_breakpoint |
a6d9a66e | 896 | (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype); |
c906108c | 897 | |
611c83ae | 898 | extern struct breakpoint *set_momentary_breakpoint_at_pc |
a6d9a66e | 899 | (struct gdbarch *, CORE_ADDR pc, enum bptype type); |
611c83ae | 900 | |
e58b0e63 PA |
901 | extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); |
902 | ||
a14ed312 | 903 | extern void set_ignore_count (int, int, int); |
c906108c | 904 | |
6c95b8df PA |
905 | extern void set_default_breakpoint (int, struct program_space *, |
906 | CORE_ADDR, struct symtab *, int); | |
c906108c | 907 | |
a14ed312 | 908 | extern void breakpoint_init_inferior (enum inf_context); |
c906108c | 909 | |
4d6140d9 AC |
910 | extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); |
911 | ||
a14ed312 | 912 | extern void delete_breakpoint (struct breakpoint *); |
c906108c | 913 | |
a14ed312 | 914 | extern void breakpoint_auto_delete (bpstat); |
c906108c | 915 | |
5cea2a26 PA |
916 | /* Return the chain of command lines to execute when this breakpoint |
917 | is hit. */ | |
918 | extern struct command_line *breakpoint_commands (struct breakpoint *b); | |
919 | ||
a14ed312 | 920 | extern void break_command (char *, int); |
c906108c | 921 | |
a14ed312 KB |
922 | extern void hbreak_command_wrapper (char *, int); |
923 | extern void thbreak_command_wrapper (char *, int); | |
924 | extern void rbreak_command_wrapper (char *, int); | |
84f4c1fe PM |
925 | extern void watch_command_wrapper (char *, int, int); |
926 | extern void awatch_command_wrapper (char *, int, int); | |
927 | extern void rwatch_command_wrapper (char *, int, int); | |
a14ed312 | 928 | extern void tbreak_command (char *, int); |
c906108c | 929 | |
8cdf0e15 VP |
930 | extern int create_breakpoint (struct gdbarch *gdbarch, char *arg, |
931 | char *cond_string, int thread, | |
932 | int parse_condition_and_thread, | |
0fb4aa4b | 933 | int tempflag, enum bptype wanted_type, |
8cdf0e15 VP |
934 | int ignore_count, |
935 | enum auto_boolean pending_break_support, | |
936 | struct breakpoint_ops *ops, | |
937 | int from_tty, | |
84f4c1fe PM |
938 | int enabled, |
939 | int internal); | |
98deb0da | 940 | |
e236ba44 | 941 | extern void insert_breakpoints (void); |
c906108c | 942 | |
a14ed312 | 943 | extern int remove_breakpoints (void); |
c906108c | 944 | |
6c95b8df PA |
945 | extern int remove_breakpoints_pid (int pid); |
946 | ||
c906108c SS |
947 | /* This function can be used to physically insert eventpoints from the |
948 | specified traced inferior process, without modifying the breakpoint | |
0e2de366 MS |
949 | package's state. This can be useful for those targets which |
950 | support following the processes of a fork() or vfork() system call, | |
951 | when both of the resulting two processes are to be followed. */ | |
a14ed312 | 952 | extern int reattach_breakpoints (int); |
c906108c SS |
953 | |
954 | /* This function can be used to update the breakpoint package's state | |
955 | after an exec() system call has been executed. | |
956 | ||
957 | This function causes the following: | |
958 | ||
c5aa993b JM |
959 | - All eventpoints are marked "not inserted". |
960 | - All eventpoints with a symbolic address are reset such that | |
961 | the symbolic address must be reevaluated before the eventpoints | |
962 | can be reinserted. | |
963 | - The solib breakpoints are explicitly removed from the breakpoint | |
964 | list. | |
965 | - A step-resume breakpoint, if any, is explicitly removed from the | |
966 | breakpoint list. | |
967 | - All eventpoints without a symbolic address are removed from the | |
0e2de366 | 968 | breakpoint list. */ |
a14ed312 | 969 | extern void update_breakpoints_after_exec (void); |
c906108c SS |
970 | |
971 | /* This function can be used to physically remove hardware breakpoints | |
972 | and watchpoints from the specified traced inferior process, without | |
973 | modifying the breakpoint package's state. This can be useful for | |
974 | those targets which support following the processes of a fork() or | |
975 | vfork() system call, when one of the resulting two processes is to | |
976 | be detached and allowed to run free. | |
c5aa993b | 977 | |
c906108c | 978 | It is an error to use this function on the process whose id is |
39f77062 | 979 | inferior_ptid. */ |
a14ed312 | 980 | extern int detach_breakpoints (int); |
c5aa993b | 981 | |
6c95b8df PA |
982 | /* This function is called when program space PSPACE is about to be |
983 | deleted. It takes care of updating breakpoints to not reference | |
984 | this PSPACE anymore. */ | |
985 | extern void breakpoint_program_space_exit (struct program_space *pspace); | |
986 | ||
186c406b TT |
987 | extern void set_longjmp_breakpoint (struct thread_info *tp, |
988 | struct frame_id frame); | |
611c83ae PA |
989 | extern void delete_longjmp_breakpoint (int thread); |
990 | ||
1900040c MS |
991 | extern void enable_overlay_breakpoints (void); |
992 | extern void disable_overlay_breakpoints (void); | |
c906108c | 993 | |
aa7d318d TT |
994 | extern void set_std_terminate_breakpoint (void); |
995 | extern void delete_std_terminate_breakpoint (void); | |
996 | ||
c906108c SS |
997 | /* These functions respectively disable or reenable all currently |
998 | enabled watchpoints. When disabled, the watchpoints are marked | |
999 | call_disabled. When reenabled, they are marked enabled. | |
1000 | ||
04714b91 | 1001 | The intended client of these functions is call_function_by_hand. |
c906108c SS |
1002 | |
1003 | The inferior must be stopped, and all breakpoints removed, when | |
1004 | these functions are used. | |
1005 | ||
1006 | The need for these functions is that on some targets (e.g., HP-UX), | |
1007 | gdb is unable to unwind through the dummy frame that is pushed as | |
1008 | part of the implementation of a call command. Watchpoints can | |
1009 | cause the inferior to stop in places where this frame is visible, | |
1010 | and that can cause execution control to become very confused. | |
1011 | ||
7e73cedf | 1012 | Note that if a user sets breakpoints in an interactively called |
c906108c SS |
1013 | function, the call_disabled watchpoints will have been reenabled |
1014 | when the first such breakpoint is reached. However, on targets | |
1015 | that are unable to unwind through the call dummy frame, watches | |
1016 | of stack-based storage may then be deleted, because gdb will | |
1017 | believe that their watched storage is out of scope. (Sigh.) */ | |
a14ed312 | 1018 | extern void disable_watchpoints_before_interactive_call_start (void); |
c906108c | 1019 | |
a14ed312 | 1020 | extern void enable_watchpoints_after_interactive_call_stop (void); |
c906108c | 1021 | |
8bea4e01 UW |
1022 | /* These functions disable and re-enable all breakpoints during |
1023 | inferior startup. They are intended to be called from solib | |
1024 | code where necessary. This is needed on platforms where the | |
1025 | main executable is relocated at some point during startup | |
1026 | processing, making breakpoint addresses invalid. | |
1027 | ||
1028 | If additional breakpoints are created after the routine | |
1029 | disable_breakpoints_before_startup but before the routine | |
1030 | enable_breakpoints_after_startup was called, they will also | |
1031 | be marked as disabled. */ | |
1032 | extern void disable_breakpoints_before_startup (void); | |
1033 | extern void enable_breakpoints_after_startup (void); | |
1034 | ||
40c03ae8 | 1035 | /* For script interpreters that need to define breakpoint commands |
0e2de366 MS |
1036 | after they've already read the commands into a struct |
1037 | command_line. */ | |
40c03ae8 EZ |
1038 | extern enum command_control_type commands_from_control_command |
1039 | (char *arg, struct command_line *cmd); | |
c5aa993b | 1040 | |
a14ed312 | 1041 | extern void clear_breakpoint_hit_counts (void); |
c906108c | 1042 | |
48cb2d85 VP |
1043 | extern struct breakpoint *get_breakpoint (int num); |
1044 | ||
0e2de366 MS |
1045 | /* The following are for displays, which aren't really breakpoints, |
1046 | but here is as good a place as any for them. */ | |
c906108c | 1047 | |
a14ed312 | 1048 | extern void disable_current_display (void); |
c906108c | 1049 | |
a14ed312 | 1050 | extern void do_displays (void); |
c906108c | 1051 | |
a14ed312 | 1052 | extern void disable_display (int); |
c906108c | 1053 | |
a14ed312 | 1054 | extern void clear_displays (void); |
c906108c | 1055 | |
a14ed312 | 1056 | extern void disable_breakpoint (struct breakpoint *); |
c906108c | 1057 | |
a14ed312 | 1058 | extern void enable_breakpoint (struct breakpoint *); |
c906108c | 1059 | |
48cb2d85 VP |
1060 | extern void breakpoint_set_commands (struct breakpoint *b, |
1061 | struct command_line *commands); | |
1062 | ||
45a43567 TT |
1063 | extern void breakpoint_set_silent (struct breakpoint *b, int silent); |
1064 | ||
1065 | extern void breakpoint_set_thread (struct breakpoint *b, int thread); | |
1066 | ||
1067 | extern void breakpoint_set_task (struct breakpoint *b, int task); | |
1068 | ||
25b22b0a PA |
1069 | /* Clear the "inserted" flag in all breakpoints. */ |
1070 | extern void mark_breakpoints_out (void); | |
1071 | ||
a14ed312 | 1072 | extern void make_breakpoint_permanent (struct breakpoint *); |
c2c6d25f | 1073 | |
4efc6507 DE |
1074 | extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *, |
1075 | CORE_ADDR); | |
1076 | ||
a6d9a66e UW |
1077 | extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *, |
1078 | CORE_ADDR); | |
c906108c | 1079 | |
a6d9a66e UW |
1080 | extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *, |
1081 | CORE_ADDR); | |
c4093a6a | 1082 | |
03673fc7 PP |
1083 | extern void remove_jit_event_breakpoints (void); |
1084 | ||
a14ed312 | 1085 | extern void remove_solib_event_breakpoints (void); |
c906108c | 1086 | |
a14ed312 | 1087 | extern void remove_thread_event_breakpoints (void); |
c4093a6a | 1088 | |
cb851954 | 1089 | extern void disable_breakpoints_in_shlibs (void); |
c906108c | 1090 | |
0e2de366 | 1091 | /* This function returns TRUE if ep is a catchpoint. */ |
a14ed312 | 1092 | extern int ep_is_catchpoint (struct breakpoint *); |
c5aa993b | 1093 | |
c2c6d25f | 1094 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
0e2de366 | 1095 | deletes all breakpoints. */ |
c2c6d25f JM |
1096 | extern void delete_command (char *arg, int from_tty); |
1097 | ||
0e2de366 MS |
1098 | /* Pull all H/W watchpoints from the target. Return non-zero if the |
1099 | remove fails. */ | |
80ce1ecb AC |
1100 | extern int remove_hw_watchpoints (void); |
1101 | ||
0e2de366 MS |
1102 | /* Manage a software single step breakpoint (or two). Insert may be |
1103 | called twice before remove is called. */ | |
6c95b8df | 1104 | extern void insert_single_step_breakpoint (struct gdbarch *, |
0e2de366 MS |
1105 | struct address_space *, |
1106 | CORE_ADDR); | |
f02253f1 | 1107 | extern int single_step_breakpoints_inserted (void); |
8181d85f | 1108 | extern void remove_single_step_breakpoints (void); |
d03285ec | 1109 | extern void cancel_single_step_breakpoints (void); |
8181d85f DJ |
1110 | |
1111 | /* Manage manual breakpoints, separate from the normal chain of | |
1112 | breakpoints. These functions are used in murky target-specific | |
1113 | ways. Please do not add more uses! */ | |
6c95b8df | 1114 | extern void *deprecated_insert_raw_breakpoint (struct gdbarch *, |
0e2de366 MS |
1115 | struct address_space *, |
1116 | CORE_ADDR); | |
a6d9a66e | 1117 | extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *); |
f83f82bc | 1118 | |
d983da9c DJ |
1119 | /* Check if any hardware watchpoints have triggered, according to the |
1120 | target. */ | |
1121 | int watchpoints_triggered (struct target_waitstatus *); | |
1122 | ||
8defab1a DJ |
1123 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
1124 | by replacing any memory breakpoints with their shadowed contents. */ | |
1125 | void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, | |
1126 | LONGEST len); | |
1127 | ||
74960c60 VP |
1128 | extern int breakpoints_always_inserted_mode (void); |
1129 | ||
20874c92 VP |
1130 | /* Called each time new event from target is processed. |
1131 | Retires previously deleted breakpoint locations that | |
1132 | in our opinion won't ever trigger. */ | |
1133 | extern void breakpoint_retire_moribund (void); | |
1134 | ||
adc36818 PM |
1135 | /* Set break condition of breakpoint B to EXP. */ |
1136 | extern void set_breakpoint_condition (struct breakpoint *b, char *exp, | |
1137 | int from_tty); | |
1138 | ||
a96d9b2e SDJ |
1139 | /* Checks if we are catching syscalls or not. |
1140 | Returns 0 if not, greater than 0 if we are. */ | |
1141 | extern int catch_syscall_enabled (void); | |
1142 | ||
1143 | /* Checks if we are catching syscalls with the specific | |
1144 | syscall_number. Used for "filtering" the catchpoints. | |
1145 | Returns 0 if not, greater than 0 if we are. */ | |
1146 | extern int catching_syscall_number (int syscall_number); | |
1147 | ||
1042e4c0 SS |
1148 | /* Return a tracepoint with the given number if found. */ |
1149 | extern struct breakpoint *get_tracepoint (int num); | |
1150 | ||
d5551862 SS |
1151 | extern struct breakpoint *get_tracepoint_by_number_on_target (int num); |
1152 | ||
1042e4c0 | 1153 | /* Find a tracepoint by parsing a number in the supplied string. */ |
197f0a60 TT |
1154 | extern struct breakpoint * |
1155 | get_tracepoint_by_number (char **arg, | |
1156 | struct get_number_or_range_state *state, | |
1157 | int optional_p); | |
1042e4c0 SS |
1158 | |
1159 | /* Return a vector of all tracepoints currently defined. The vector | |
1160 | is newly allocated; the caller should free when done with it. */ | |
1161 | extern VEC(breakpoint_p) *all_tracepoints (void); | |
1162 | ||
d77f58be | 1163 | extern int is_tracepoint (const struct breakpoint *b); |
a7bdde9e | 1164 | |
0fb4aa4b PA |
1165 | /* Return a vector of all static tracepoints defined at ADDR. The |
1166 | vector is newly allocated; the caller should free when done with | |
1167 | it. */ | |
1168 | extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr); | |
1169 | ||
a7bdde9e VP |
1170 | /* Function that can be passed to read_command_line to validate |
1171 | that each command is suitable for tracepoint command list. */ | |
1172 | extern void check_tracepoint_command (char *line, void *closure); | |
1173 | ||
95a42b64 TT |
1174 | /* Call at the start and end of an "rbreak" command to register |
1175 | breakpoint numbers for a later "commands" command. */ | |
1176 | extern void start_rbreak_breakpoints (void); | |
1177 | extern void end_rbreak_breakpoints (void); | |
1178 | ||
84f4c1fe PM |
1179 | /* Breakpoint iterator function. |
1180 | ||
1181 | Calls a callback function once for each breakpoint, so long as the | |
1182 | callback function returns false. If the callback function returns | |
1183 | true, the iteration will end and the current breakpoint will be | |
1184 | returned. This can be useful for implementing a search for a | |
1185 | breakpoint with arbitrary attributes, or for applying an operation | |
1186 | to every breakpoint. */ | |
1187 | extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *, | |
1188 | void *), void *); | |
1189 | ||
09d682a4 TT |
1190 | extern int user_breakpoint_p (struct breakpoint *); |
1191 | ||
c906108c | 1192 | #endif /* !defined (BREAKPOINT_H) */ |