Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Data structures associated with breakpoints in GDB. |
2 | Copyright (C) 1992, 93, 94, 95, 96, 98, 1999 Free Software Foundation, Inc. | |
3 | ||
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #if !defined (BREAKPOINT_H) | |
22 | #define BREAKPOINT_H 1 | |
23 | ||
24 | #include "frame.h" | |
25 | #include "value.h" | |
26 | ||
104c1213 JM |
27 | #include "gdb-events.h" |
28 | ||
c906108c SS |
29 | /* This is the maximum number of bytes a breakpoint instruction can take. |
30 | Feel free to increase it. It's just used in a few places to size | |
31 | arrays that should be independent of the target architecture. */ | |
32 | ||
33 | #define BREAKPOINT_MAX 16 | |
34 | \f | |
35 | /* Type of breakpoint. */ | |
36 | /* FIXME In the future, we should fold all other breakpoint-like things into | |
37 | here. This includes: | |
38 | ||
39 | * single-step (for machines where we have to simulate single stepping) | |
c5aa993b JM |
40 | (probably, though perhaps it is better for it to look as much as |
41 | possible like a single-step to wait_for_inferior). */ | |
42 | ||
43 | enum bptype | |
44 | { | |
45 | bp_none = 0, /* Eventpoint has been deleted. */ | |
46 | bp_breakpoint, /* Normal breakpoint */ | |
47 | bp_hardware_breakpoint, /* Hardware assisted breakpoint */ | |
48 | bp_until, /* used by until command */ | |
49 | bp_finish, /* used by finish command */ | |
50 | bp_watchpoint, /* Watchpoint */ | |
51 | bp_hardware_watchpoint, /* Hardware assisted watchpoint */ | |
52 | bp_read_watchpoint, /* read watchpoint, (hardware assisted) */ | |
53 | bp_access_watchpoint, /* access watchpoint, (hardware assisted) */ | |
54 | bp_longjmp, /* secret breakpoint to find longjmp() */ | |
55 | bp_longjmp_resume, /* secret breakpoint to escape longjmp() */ | |
56 | ||
57 | /* Used by wait_for_inferior for stepping over subroutine calls, for | |
58 | stepping over signal handlers, and for skipping prologues. */ | |
59 | bp_step_resume, | |
60 | ||
61 | /* Used by wait_for_inferior for stepping over signal handlers. */ | |
62 | bp_through_sigtramp, | |
63 | ||
64 | /* Used to detect when a watchpoint expression has gone out of | |
65 | scope. These breakpoints are usually not visible to the user. | |
66 | ||
67 | This breakpoint has some interesting properties: | |
c906108c SS |
68 | |
69 | 1) There's always a 1:1 mapping between watchpoints | |
70 | on local variables and watchpoint_scope breakpoints. | |
71 | ||
72 | 2) It automatically deletes itself and the watchpoint it's | |
73 | associated with when hit. | |
74 | ||
75 | 3) It can never be disabled. */ | |
c5aa993b JM |
76 | bp_watchpoint_scope, |
77 | ||
78 | /* The breakpoint at the end of a call dummy. */ | |
79 | /* FIXME: What if the function we are calling longjmp()s out of the | |
80 | call, or the user gets out with the "return" command? We currently | |
81 | have no way of cleaning up the breakpoint in these (obscure) situations. | |
82 | (Probably can solve this by noticing longjmp, "return", etc., it's | |
83 | similar to noticing when a watchpoint on a local variable goes out | |
84 | of scope (with hardware support for watchpoints)). */ | |
85 | bp_call_dummy, | |
86 | ||
87 | /* Some dynamic linkers (HP, maybe Solaris) can arrange for special | |
88 | code in the inferior to run when significant events occur in the | |
89 | dynamic linker (for example a library is loaded or unloaded). | |
90 | ||
91 | By placing a breakpoint in this magic code GDB will get control | |
92 | when these significant events occur. GDB can then re-examine | |
93 | the dynamic linker's data structures to discover any newly loaded | |
94 | dynamic libraries. */ | |
95 | bp_shlib_event, | |
96 | ||
c4093a6a JM |
97 | /* Some multi-threaded systems can arrange for a location in the |
98 | inferior to be executed when certain thread-related events occur | |
99 | (such as thread creation or thread death). | |
100 | ||
101 | By placing a breakpoint at one of these locations, GDB will get | |
102 | control when these events occur. GDB can then update its thread | |
103 | lists etc. */ | |
104 | ||
105 | bp_thread_event, | |
106 | ||
c5aa993b JM |
107 | /* These breakpoints are used to implement the "catch load" command |
108 | on platforms whose dynamic linkers support such functionality. */ | |
109 | bp_catch_load, | |
110 | ||
111 | /* These breakpoints are used to implement the "catch unload" command | |
112 | on platforms whose dynamic linkers support such functionality. */ | |
113 | bp_catch_unload, | |
114 | ||
115 | /* These are not really breakpoints, but are catchpoints that | |
116 | implement the "catch fork", "catch vfork" and "catch exec" commands | |
117 | on platforms whose kernel support such functionality. (I.e., | |
118 | kernels which can raise an event when a fork or exec occurs, as | |
119 | opposed to the debugger setting breakpoints on functions named | |
120 | "fork" or "exec".) */ | |
121 | bp_catch_fork, | |
122 | bp_catch_vfork, | |
123 | bp_catch_exec, | |
124 | ||
125 | /* These are catchpoints to implement "catch catch" and "catch throw" | |
126 | commands for C++ exception handling. */ | |
127 | bp_catch_catch, | |
128 | bp_catch_throw | |
129 | ||
130 | ||
131 | }; | |
c906108c SS |
132 | |
133 | /* States of enablement of breakpoint. */ | |
134 | ||
c5aa993b JM |
135 | enum enable |
136 | { | |
53a5351d JM |
137 | disabled, /* The eventpoint is inactive, and cannot trigger. */ |
138 | enabled, /* The eventpoint is active, and can trigger. */ | |
139 | shlib_disabled, /* The eventpoint's address is in an unloaded solib. | |
140 | The eventpoint will be automatically enabled | |
141 | and reset when that solib is loaded. */ | |
c2c6d25f | 142 | call_disabled, /* The eventpoint has been disabled while a call |
53a5351d JM |
143 | into the inferior is "in flight", because some |
144 | eventpoints interfere with the implementation of | |
145 | a call on some targets. The eventpoint will be | |
146 | automatically enabled and reset when the call | |
147 | "lands" (either completes, or stops at another | |
148 | eventpoint). */ | |
c2c6d25f JM |
149 | permanent /* There is a breakpoint instruction hard-wired into |
150 | the target's code. Don't try to write another | |
151 | breakpoint instruction on top of it, or restore | |
152 | its value. Step over it using the architecture's | |
153 | SKIP_INSN macro. */ | |
c5aa993b | 154 | }; |
c906108c SS |
155 | |
156 | ||
157 | /* Disposition of breakpoint. Ie: what to do after hitting it. */ | |
158 | ||
c5aa993b JM |
159 | enum bpdisp |
160 | { | |
161 | del, /* Delete it */ | |
162 | del_at_next_stop, /* Delete at next stop, whether hit or not */ | |
163 | disable, /* Disable it */ | |
164 | donttouch /* Leave it alone */ | |
165 | }; | |
c906108c | 166 | |
53a5351d JM |
167 | enum target_hw_bp_type |
168 | { | |
169 | hw_write = 0, /* Common HW watchpoint */ | |
170 | hw_read = 1, /* Read HW watchpoint */ | |
171 | hw_access = 2, /* Access HW watchpoint */ | |
172 | hw_execute = 3 /* Execute HW breakpoint */ | |
173 | }; | |
174 | ||
c906108c SS |
175 | /* Note that the ->silent field is not currently used by any commands |
176 | (though the code is in there if it was to be, and set_raw_breakpoint | |
177 | does set it to 0). I implemented it because I thought it would be | |
178 | useful for a hack I had to put in; I'm going to leave it in because | |
179 | I can see how there might be times when it would indeed be useful */ | |
180 | ||
181 | /* This is for a breakpoint or a watchpoint. */ | |
182 | ||
183 | struct breakpoint | |
c5aa993b JM |
184 | { |
185 | struct breakpoint *next; | |
186 | /* Type of breakpoint. */ | |
187 | enum bptype type; | |
188 | /* Zero means disabled; remember the info but don't break here. */ | |
189 | enum enable enable; | |
190 | /* What to do with this breakpoint after we hit it. */ | |
191 | enum bpdisp disposition; | |
192 | /* Number assigned to distinguish breakpoints. */ | |
193 | int number; | |
194 | ||
195 | /* Address to break at, or NULL if not a breakpoint. */ | |
196 | CORE_ADDR address; | |
197 | ||
198 | /* Line number of this address. Only matters if address is | |
199 | non-NULL. */ | |
200 | ||
201 | int line_number; | |
202 | ||
203 | /* Source file name of this address. Only matters if address is | |
204 | non-NULL. */ | |
205 | ||
206 | char *source_file; | |
207 | ||
208 | /* Non-zero means a silent breakpoint (don't print frame info | |
209 | if we stop here). */ | |
210 | unsigned char silent; | |
211 | /* Number of stops at this breakpoint that should | |
212 | be continued automatically before really stopping. */ | |
213 | int ignore_count; | |
214 | /* "Real" contents of byte where breakpoint has been inserted. | |
215 | Valid only when breakpoints are in the program. Under the complete | |
216 | control of the target insert_breakpoint and remove_breakpoint routines. | |
217 | No other code should assume anything about the value(s) here. */ | |
218 | char shadow_contents[BREAKPOINT_MAX]; | |
219 | /* Nonzero if this breakpoint is now inserted. Only matters if address | |
220 | is non-NULL. */ | |
221 | char inserted; | |
222 | /* Nonzero if this is not the first breakpoint in the list | |
223 | for the given address. Only matters if address is non-NULL. */ | |
224 | char duplicate; | |
225 | /* Chain of command lines to execute when this breakpoint is hit. */ | |
226 | struct command_line *commands; | |
227 | /* Stack depth (address of frame). If nonzero, break only if fp | |
228 | equals this. */ | |
229 | CORE_ADDR frame; | |
230 | /* Conditional. Break only if this expression's value is nonzero. */ | |
231 | struct expression *cond; | |
232 | ||
233 | /* String we used to set the breakpoint (malloc'd). Only matters if | |
234 | address is non-NULL. */ | |
235 | char *addr_string; | |
236 | /* Language we used to set the breakpoint. */ | |
237 | enum language language; | |
238 | /* Input radix we used to set the breakpoint. */ | |
239 | int input_radix; | |
240 | /* String form of the breakpoint condition (malloc'd), or NULL if there | |
241 | is no condition. */ | |
242 | char *cond_string; | |
243 | /* String form of exp (malloc'd), or NULL if none. */ | |
244 | char *exp_string; | |
245 | ||
246 | /* The expression we are watching, or NULL if not a watchpoint. */ | |
247 | struct expression *exp; | |
248 | /* The largest block within which it is valid, or NULL if it is | |
249 | valid anywhere (e.g. consists just of global symbols). */ | |
250 | struct block *exp_valid_block; | |
251 | /* Value of the watchpoint the last time we checked it. */ | |
252 | value_ptr val; | |
253 | ||
254 | /* Holds the value chain for a hardware watchpoint expression. */ | |
255 | value_ptr val_chain; | |
256 | ||
257 | /* Holds the address of the related watchpoint_scope breakpoint | |
258 | when using watchpoints on local variables (might the concept | |
259 | of a related breakpoint be useful elsewhere, if not just call | |
260 | it the watchpoint_scope breakpoint or something like that. FIXME). */ | |
261 | struct breakpoint *related_breakpoint; | |
262 | ||
263 | /* Holds the frame address which identifies the frame this watchpoint | |
264 | should be evaluated in, or NULL if the watchpoint should be evaluated | |
265 | on the outermost frame. */ | |
266 | CORE_ADDR watchpoint_frame; | |
267 | ||
268 | /* Thread number for thread-specific breakpoint, or -1 if don't care */ | |
269 | int thread; | |
270 | ||
271 | /* Count of the number of times this breakpoint was taken, dumped | |
272 | with the info, but not used for anything else. Useful for | |
273 | seeing how many times you hit a break prior to the program | |
274 | aborting, so you can back up to just before the abort. */ | |
275 | int hit_count; | |
276 | ||
53a5351d JM |
277 | /* Filename of a dynamically-linked library (dll), used for |
278 | bp_catch_load and bp_catch_unload (malloc'd), or NULL if any | |
279 | library is significant. */ | |
c5aa993b JM |
280 | char *dll_pathname; |
281 | ||
282 | /* Filename of a dll whose state change (e.g., load or unload) | |
283 | triggered this catchpoint. This field is only vaid immediately | |
284 | after this catchpoint has triggered. */ | |
285 | char *triggered_dll_pathname; | |
286 | ||
53a5351d JM |
287 | /* Process id of a child process whose forking triggered this |
288 | catchpoint. This field is only vaid immediately after this | |
289 | catchpoint has triggered. */ | |
c5aa993b JM |
290 | int forked_inferior_pid; |
291 | ||
53a5351d JM |
292 | /* Filename of a program whose exec triggered this catchpoint. |
293 | This field is only vaid immediately after this catchpoint has | |
294 | triggered. */ | |
c5aa993b JM |
295 | char *exec_pathname; |
296 | ||
297 | asection *section; | |
298 | }; | |
c906108c | 299 | \f |
53a5351d JM |
300 | /* The following stuff is an abstract data type "bpstat" ("breakpoint |
301 | status"). This provides the ability to determine whether we have | |
302 | stopped at a breakpoint, and what we should do about it. */ | |
c906108c SS |
303 | |
304 | typedef struct bpstats *bpstat; | |
305 | ||
306 | /* Interface: */ | |
307 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
308 | Also free any storage that is part of a bpstat. */ | |
309 | extern void bpstat_clear PARAMS ((bpstat *)); | |
310 | ||
311 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
312 | is part of the bpstat is copied as well. */ | |
313 | extern bpstat bpstat_copy PARAMS ((bpstat)); | |
314 | ||
315 | extern bpstat bpstat_stop_status PARAMS ((CORE_ADDR *, int)); | |
316 | \f | |
317 | /* This bpstat_what stuff tells wait_for_inferior what to do with a | |
318 | breakpoint (a challenging task). */ | |
319 | ||
c5aa993b JM |
320 | enum bpstat_what_main_action |
321 | { | |
322 | /* Perform various other tests; that is, this bpstat does not | |
323 | say to perform any action (e.g. failed watchpoint and nothing | |
324 | else). */ | |
325 | BPSTAT_WHAT_KEEP_CHECKING, | |
326 | ||
327 | /* Rather than distinguish between noisy and silent stops here, it | |
328 | might be cleaner to have bpstat_print make that decision (also | |
329 | taking into account stop_print_frame and source_only). But the | |
330 | implications are a bit scary (interaction with auto-displays, etc.), | |
331 | so I won't try it. */ | |
332 | ||
333 | /* Stop silently. */ | |
334 | BPSTAT_WHAT_STOP_SILENT, | |
335 | ||
336 | /* Stop and print. */ | |
337 | BPSTAT_WHAT_STOP_NOISY, | |
338 | ||
339 | /* Remove breakpoints, single step once, then put them back in and | |
340 | go back to what we were doing. It's possible that this should be | |
341 | removed from the main_action and put into a separate field, to more | |
342 | cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */ | |
343 | BPSTAT_WHAT_SINGLE, | |
344 | ||
345 | /* Set longjmp_resume breakpoint, remove all other breakpoints, | |
346 | and continue. The "remove all other breakpoints" part is required | |
347 | if we are also stepping over another breakpoint as well as doing | |
348 | the longjmp handling. */ | |
349 | BPSTAT_WHAT_SET_LONGJMP_RESUME, | |
350 | ||
351 | /* Clear longjmp_resume breakpoint, then handle as | |
352 | BPSTAT_WHAT_KEEP_CHECKING. */ | |
353 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME, | |
354 | ||
355 | /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */ | |
356 | BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE, | |
357 | ||
358 | /* Clear step resume breakpoint, and keep checking. */ | |
359 | BPSTAT_WHAT_STEP_RESUME, | |
360 | ||
361 | /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep | |
362 | checking. */ | |
363 | BPSTAT_WHAT_THROUGH_SIGTRAMP, | |
364 | ||
365 | /* Check the dynamic linker's data structures for new libraries, then | |
366 | keep checking. */ | |
367 | BPSTAT_WHAT_CHECK_SHLIBS, | |
368 | ||
369 | /* Check the dynamic linker's data structures for new libraries, then | |
370 | resume out of the dynamic linker's callback, stop and print. */ | |
371 | BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK, | |
372 | ||
373 | /* This is just used to keep track of how many enums there are. */ | |
374 | BPSTAT_WHAT_LAST | |
375 | }; | |
376 | ||
377 | struct bpstat_what | |
378 | { | |
379 | enum bpstat_what_main_action main_action; | |
380 | ||
381 | /* Did we hit a call dummy breakpoint? This only goes with a main_action | |
382 | of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of | |
383 | continuing from a call dummy without popping the frame is not a | |
384 | useful one). */ | |
385 | int call_dummy; | |
386 | }; | |
c906108c | 387 | |
5c44784c JM |
388 | /* The possible return values for print_bpstat, print_it_normal, |
389 | print_it_done, print_it_noop. */ | |
390 | enum print_stop_action | |
391 | { | |
392 | PRINT_UNKNOWN = -1, | |
393 | PRINT_SRC_AND_LOC, | |
394 | PRINT_SRC_ONLY, | |
395 | PRINT_NOTHING | |
396 | }; | |
397 | ||
c906108c SS |
398 | /* Tell what to do about this bpstat. */ |
399 | struct bpstat_what bpstat_what PARAMS ((bpstat)); | |
400 | \f | |
401 | /* Find the bpstat associated with a breakpoint. NULL otherwise. */ | |
402 | bpstat bpstat_find_breakpoint PARAMS ((bpstat, struct breakpoint *)); | |
403 | ||
404 | /* Find a step_resume breakpoint associated with this bpstat. | |
405 | (If there are multiple step_resume bp's on the list, this function | |
406 | will arbitrarily pick one.) | |
407 | ||
408 | It is an error to use this function if BPSTAT doesn't contain a | |
409 | step_resume breakpoint. | |
410 | ||
411 | See wait_for_inferior's use of this function. | |
c5aa993b | 412 | */ |
c906108c | 413 | extern struct breakpoint * |
c5aa993b | 414 | bpstat_find_step_resume_breakpoint PARAMS ((bpstat)); |
c906108c SS |
415 | |
416 | /* Nonzero if a signal that we got in wait() was due to circumstances | |
417 | explained by the BS. */ | |
418 | /* Currently that is true if we have hit a breakpoint, or if there is | |
419 | a watchpoint enabled. */ | |
420 | #define bpstat_explains_signal(bs) ((bs) != NULL) | |
421 | ||
422 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
423 | without hardware support). This isn't related to a specific bpstat, | |
424 | just to things like whether watchpoints are set. */ | |
425 | extern int bpstat_should_step PARAMS ((void)); | |
426 | ||
427 | /* Nonzero if there are enabled hardware watchpoints. */ | |
428 | extern int bpstat_have_active_hw_watchpoints PARAMS ((void)); | |
429 | ||
430 | /* Print a message indicating what happened. Returns nonzero to | |
431 | say that only the source line should be printed after this (zero | |
432 | return means print the frame as well as the source line). */ | |
5c44784c | 433 | extern enum print_stop_action bpstat_print PARAMS ((bpstat)); |
c906108c SS |
434 | |
435 | /* Return the breakpoint number of the first breakpoint we are stopped | |
436 | at. *BSP upon return is a bpstat which points to the remaining | |
437 | breakpoints stopped at (but which is not guaranteed to be good for | |
438 | anything but further calls to bpstat_num). | |
439 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
440 | extern int bpstat_num PARAMS ((bpstat *)); | |
441 | ||
442 | /* Perform actions associated with having stopped at *BSP. Actually, we just | |
443 | use this for breakpoint commands. Perhaps other actions will go here | |
444 | later, but this is executed at a late time (from the command loop). */ | |
445 | extern void bpstat_do_actions PARAMS ((bpstat *)); | |
446 | ||
447 | /* Modify BS so that the actions will not be performed. */ | |
448 | extern void bpstat_clear_actions PARAMS ((bpstat)); | |
449 | ||
450 | /* Given a bpstat that records zero or more triggered eventpoints, this | |
451 | function returns another bpstat which contains only the catchpoints | |
452 | on that first list, if any. | |
c5aa993b | 453 | */ |
c906108c | 454 | extern void bpstat_get_triggered_catchpoints PARAMS ((bpstat, bpstat *)); |
c5aa993b | 455 | |
c906108c | 456 | /* Implementation: */ |
e514a9d6 JM |
457 | |
458 | /* Values used to tell the printing routine how to behave for this bpstat. */ | |
459 | enum bp_print_how | |
460 | { | |
461 | /* This is used when we want to do a normal printing of the reason | |
462 | for stopping. The output will depend on the type of eventpoint | |
463 | we are dealing with. This is the default value, most commonly | |
464 | used. */ | |
465 | print_it_normal, | |
466 | /* This is used when nothing should be printed for this bpstat entry. */ | |
467 | print_it_noop, | |
468 | /* This is used when everything which needs to be printed has | |
469 | already been printed. But we still want to print the frame. */ | |
470 | print_it_done | |
471 | }; | |
472 | ||
c906108c | 473 | struct bpstats |
c5aa993b | 474 | { |
53a5351d JM |
475 | /* Linked list because there can be two breakpoints at the same |
476 | place, and a bpstat reflects the fact that both have been hit. */ | |
c5aa993b JM |
477 | bpstat next; |
478 | /* Breakpoint that we are at. */ | |
479 | struct breakpoint *breakpoint_at; | |
480 | /* Commands left to be done. */ | |
481 | struct command_line *commands; | |
482 | /* Old value associated with a watchpoint. */ | |
483 | value_ptr old_val; | |
484 | ||
485 | /* Nonzero if this breakpoint tells us to print the frame. */ | |
486 | char print; | |
487 | ||
488 | /* Nonzero if this breakpoint tells us to stop. */ | |
489 | char stop; | |
490 | ||
e514a9d6 JM |
491 | /* Tell bpstat_print and print_bp_stop_message how to print stuff |
492 | associated with this element of the bpstat chain. */ | |
493 | enum bp_print_how print_it; | |
c5aa993b | 494 | }; |
c906108c SS |
495 | |
496 | enum inf_context | |
c5aa993b JM |
497 | { |
498 | inf_starting, | |
499 | inf_running, | |
500 | inf_exited | |
501 | }; | |
c2c6d25f JM |
502 | |
503 | /* The possible return values for breakpoint_here_p. | |
504 | We guarantee that zero always means "no breakpoint here". */ | |
505 | enum breakpoint_here | |
506 | { | |
507 | no_breakpoint_here = 0, | |
508 | ordinary_breakpoint_here, | |
509 | permanent_breakpoint_here | |
510 | }; | |
c906108c | 511 | \f |
c5aa993b | 512 | |
c906108c SS |
513 | /* Prototypes for breakpoint-related functions. */ |
514 | ||
104c1213 | 515 | /* Forward declarations for prototypes */ |
c906108c | 516 | struct frame_info; |
c906108c | 517 | |
c2c6d25f | 518 | extern enum breakpoint_here breakpoint_here_p PARAMS ((CORE_ADDR)); |
c906108c SS |
519 | |
520 | extern int breakpoint_inserted_here_p PARAMS ((CORE_ADDR)); | |
521 | ||
522 | extern int frame_in_dummy PARAMS ((struct frame_info *)); | |
523 | ||
524 | extern int breakpoint_thread_match PARAMS ((CORE_ADDR, int)); | |
525 | ||
526 | extern void until_break_command PARAMS ((char *, int)); | |
527 | ||
528 | extern void breakpoint_re_set PARAMS ((void)); | |
529 | ||
530 | extern void breakpoint_re_set_thread PARAMS ((struct breakpoint *)); | |
531 | ||
532 | extern int ep_is_exception_catchpoint PARAMS ((struct breakpoint *)); | |
533 | ||
534 | extern struct breakpoint *set_momentary_breakpoint | |
535 | PARAMS ((struct symtab_and_line, struct frame_info *, enum bptype)); | |
536 | ||
537 | extern void set_ignore_count PARAMS ((int, int, int)); | |
538 | ||
53a5351d JM |
539 | extern void set_default_breakpoint PARAMS ((int, CORE_ADDR, |
540 | struct symtab *, int)); | |
c906108c SS |
541 | |
542 | extern void mark_breakpoints_out PARAMS ((void)); | |
543 | ||
544 | extern void breakpoint_init_inferior PARAMS ((enum inf_context)); | |
545 | ||
546 | extern void delete_breakpoint PARAMS ((struct breakpoint *)); | |
547 | ||
548 | extern void breakpoint_auto_delete PARAMS ((bpstat)); | |
549 | ||
550 | extern void breakpoint_clear_ignore_counts PARAMS ((void)); | |
551 | ||
552 | extern void break_command PARAMS ((char *, int)); | |
553 | ||
8b93c638 JM |
554 | extern void hbreak_command_wrapper PARAMS ((char *, int)); |
555 | extern void thbreak_command_wrapper PARAMS ((char *, int)); | |
556 | extern void rbreak_command_wrapper PARAMS ((char *, int)); | |
557 | extern void watch_command_wrapper PARAMS ((char *, int)); | |
558 | extern void awatch_command_wrapper PARAMS ((char *, int)); | |
559 | extern void rwatch_command_wrapper PARAMS ((char *, int)); | |
c906108c SS |
560 | extern void tbreak_command PARAMS ((char *, int)); |
561 | ||
562 | extern int insert_breakpoints PARAMS ((void)); | |
563 | ||
564 | extern int remove_breakpoints PARAMS ((void)); | |
565 | ||
566 | /* This function can be used to physically insert eventpoints from the | |
567 | specified traced inferior process, without modifying the breakpoint | |
568 | package's state. This can be useful for those targets which support | |
569 | following the processes of a fork() or vfork() system call, when both | |
570 | of the resulting two processes are to be followed. */ | |
571 | extern int reattach_breakpoints PARAMS ((int)); | |
572 | ||
573 | /* This function can be used to update the breakpoint package's state | |
574 | after an exec() system call has been executed. | |
575 | ||
576 | This function causes the following: | |
577 | ||
c5aa993b JM |
578 | - All eventpoints are marked "not inserted". |
579 | - All eventpoints with a symbolic address are reset such that | |
580 | the symbolic address must be reevaluated before the eventpoints | |
581 | can be reinserted. | |
582 | - The solib breakpoints are explicitly removed from the breakpoint | |
583 | list. | |
584 | - A step-resume breakpoint, if any, is explicitly removed from the | |
585 | breakpoint list. | |
586 | - All eventpoints without a symbolic address are removed from the | |
587 | breakpoint list. */ | |
c906108c SS |
588 | extern void update_breakpoints_after_exec PARAMS ((void)); |
589 | ||
590 | /* This function can be used to physically remove hardware breakpoints | |
591 | and watchpoints from the specified traced inferior process, without | |
592 | modifying the breakpoint package's state. This can be useful for | |
593 | those targets which support following the processes of a fork() or | |
594 | vfork() system call, when one of the resulting two processes is to | |
595 | be detached and allowed to run free. | |
c5aa993b | 596 | |
c906108c SS |
597 | It is an error to use this function on the process whose id is |
598 | inferior_pid. */ | |
599 | extern int detach_breakpoints PARAMS ((int)); | |
c5aa993b | 600 | |
c906108c SS |
601 | extern void enable_longjmp_breakpoint PARAMS ((void)); |
602 | ||
603 | extern void disable_longjmp_breakpoint PARAMS ((void)); | |
604 | ||
605 | extern void set_longjmp_resume_breakpoint PARAMS ((CORE_ADDR, | |
606 | struct frame_info *)); | |
607 | /* These functions respectively disable or reenable all currently | |
608 | enabled watchpoints. When disabled, the watchpoints are marked | |
609 | call_disabled. When reenabled, they are marked enabled. | |
610 | ||
611 | The intended client of these functions is infcmd.c\run_stack_dummy. | |
612 | ||
613 | The inferior must be stopped, and all breakpoints removed, when | |
614 | these functions are used. | |
615 | ||
616 | The need for these functions is that on some targets (e.g., HP-UX), | |
617 | gdb is unable to unwind through the dummy frame that is pushed as | |
618 | part of the implementation of a call command. Watchpoints can | |
619 | cause the inferior to stop in places where this frame is visible, | |
620 | and that can cause execution control to become very confused. | |
621 | ||
622 | Note that if a user sets breakpoints in an interactively call | |
623 | function, the call_disabled watchpoints will have been reenabled | |
624 | when the first such breakpoint is reached. However, on targets | |
625 | that are unable to unwind through the call dummy frame, watches | |
626 | of stack-based storage may then be deleted, because gdb will | |
627 | believe that their watched storage is out of scope. (Sigh.) */ | |
628 | extern void | |
629 | disable_watchpoints_before_interactive_call_start PARAMS ((void)); | |
630 | ||
631 | extern void | |
632 | enable_watchpoints_after_interactive_call_stop PARAMS ((void)); | |
633 | ||
c5aa993b | 634 | |
c906108c SS |
635 | extern void clear_breakpoint_hit_counts PARAMS ((void)); |
636 | ||
5c44784c JM |
637 | extern int get_number PARAMS ((char **)); |
638 | ||
639 | extern int get_number_or_range PARAMS ((char **)); | |
640 | ||
c906108c SS |
641 | /* The following are for displays, which aren't really breakpoints, but |
642 | here is as good a place as any for them. */ | |
643 | ||
644 | extern void disable_current_display PARAMS ((void)); | |
645 | ||
646 | extern void do_displays PARAMS ((void)); | |
647 | ||
648 | extern void disable_display PARAMS ((int)); | |
649 | ||
650 | extern void clear_displays PARAMS ((void)); | |
651 | ||
652 | extern void disable_breakpoint PARAMS ((struct breakpoint *)); | |
653 | ||
654 | extern void enable_breakpoint PARAMS ((struct breakpoint *)); | |
655 | ||
c2c6d25f JM |
656 | extern void make_breakpoint_permanent PARAMS ((struct breakpoint *)); |
657 | ||
658 | extern struct breakpoint *create_solib_event_breakpoint PARAMS ((CORE_ADDR)); | |
c906108c | 659 | |
c4093a6a JM |
660 | extern struct breakpoint *create_thread_event_breakpoint PARAMS ((CORE_ADDR)); |
661 | ||
c906108c SS |
662 | extern void remove_solib_event_breakpoints PARAMS ((void)); |
663 | ||
c4093a6a JM |
664 | extern void remove_thread_event_breakpoints PARAMS ((void)); |
665 | ||
c906108c SS |
666 | extern void disable_breakpoints_in_shlibs PARAMS ((int silent)); |
667 | ||
668 | extern void re_enable_breakpoints_in_shlibs PARAMS ((void)); | |
669 | ||
53a5351d JM |
670 | extern void create_solib_load_event_breakpoint PARAMS ((char *, int, |
671 | char *, char *)); | |
c5aa993b | 672 | |
53a5351d JM |
673 | extern void create_solib_unload_event_breakpoint PARAMS ((char *, int, |
674 | char *, char *)); | |
c5aa993b | 675 | |
c906108c | 676 | extern void create_fork_event_catchpoint PARAMS ((int, char *)); |
c5aa993b | 677 | |
c906108c SS |
678 | extern void create_vfork_event_catchpoint PARAMS ((int, char *)); |
679 | ||
680 | extern void create_exec_event_catchpoint PARAMS ((int, char *)); | |
c5aa993b | 681 | |
c906108c SS |
682 | /* This function returns TRUE if ep is a catchpoint. */ |
683 | extern int ep_is_catchpoint PARAMS ((struct breakpoint *)); | |
c5aa993b | 684 | |
c906108c SS |
685 | /* This function returns TRUE if ep is a catchpoint of a |
686 | shared library (aka dynamically-linked library) event, | |
687 | such as a library load or unload. */ | |
688 | extern int ep_is_shlib_catchpoint PARAMS ((struct breakpoint *)); | |
c5aa993b | 689 | |
c906108c SS |
690 | extern struct breakpoint *set_breakpoint_sal PARAMS ((struct symtab_and_line)); |
691 | ||
c2c6d25f JM |
692 | /* Enable breakpoints and delete when hit. Called with ARG == NULL |
693 | deletes all breakpoints. */ | |
694 | extern void delete_command (char *arg, int from_tty); | |
695 | ||
c906108c | 696 | #endif /* !defined (BREAKPOINT_H) */ |