gdb/breakpoint.h

   1 /* Data structures associated with breakpoints in GDB.
   2    Copyright (C) 1992, 93, 94, 95, 96, 98, 1999 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   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.
  10
  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.
  15
  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.  */
  20
  21 #if !defined (BREAKPOINT_H)
  22 #define BREAKPOINT_H 1
  23
  24 #include "frame.h"
  25 #include "value.h"
  26
  27 #include "gdb-events.h"
  28
  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)
  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:
  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.  */
  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
  97     /* These breakpoints are used to implement the "catch load" command
  98        on platforms whose dynamic linkers support such functionality.  */
  99     bp_catch_load,
 100
 101     /* These breakpoints are used to implement the "catch unload" command
 102        on platforms whose dynamic linkers support such functionality.  */
 103     bp_catch_unload,
 104
 105     /* These are not really breakpoints, but are catchpoints that
 106        implement the "catch fork", "catch vfork" and "catch exec" commands
 107        on platforms whose kernel support such functionality.  (I.e.,
 108        kernels which can raise an event when a fork or exec occurs, as
 109        opposed to the debugger setting breakpoints on functions named
 110        "fork" or "exec".) */
 111     bp_catch_fork,
 112     bp_catch_vfork,
 113     bp_catch_exec,
 114
 115     /* These are catchpoints to implement "catch catch" and "catch throw"
 116        commands for C++ exception handling. */
 117     bp_catch_catch,
 118     bp_catch_throw
 119
 120
 121   };
 122
 123 /* States of enablement of breakpoint. */
 124
 125 enum enable
 126   {
 127     disabled,           /* The eventpoint is inactive, and cannot trigger. */
 128     enabled,            /* The eventpoint is active, and can trigger. */
 129     shlib_disabled,     /* The eventpoint's address is in an unloaded solib.
 130                            The eventpoint will be automatically enabled
 131                            and reset when that solib is loaded. */
 132     call_disabled       /* The eventpoint has been disabled while a call
 133                            into the inferior is "in flight", because some
 134                            eventpoints interfere with the implementation of
 135                            a call on some targets.  The eventpoint will be
 136                            automatically enabled and reset when the call
 137                            "lands" (either completes, or stops at another
 138                            eventpoint). */
 139   };
 140
 141
 142 /* Disposition of breakpoint.  Ie: what to do after hitting it. */
 143
 144 enum bpdisp
 145   {
 146     del,                        /* Delete it */
 147     del_at_next_stop,           /* Delete at next stop, whether hit or not */
 148     disable,                    /* Disable it */
 149     donttouch                   /* Leave it alone */
 150   };
 151
 152 enum target_hw_bp_type
 153   {
 154     hw_write   = 0,             /* Common  HW watchpoint */
 155     hw_read    = 1,             /* Read    HW watchpoint */
 156     hw_access  = 2,             /* Access  HW watchpoint */
 157     hw_execute = 3              /* Execute HW breakpoint */
 158   };
 159
 160 /* Note that the ->silent field is not currently used by any commands
 161    (though the code is in there if it was to be, and set_raw_breakpoint
 162    does set it to 0).  I implemented it because I thought it would be
 163    useful for a hack I had to put in; I'm going to leave it in because
 164    I can see how there might be times when it would indeed be useful */
 165
 166 /* This is for a breakpoint or a watchpoint.  */
 167
 168 struct breakpoint
 169   {
 170     struct breakpoint *next;
 171     /* Type of breakpoint. */
 172     enum bptype type;
 173     /* Zero means disabled; remember the info but don't break here.  */
 174     enum enable enable;
 175     /* What to do with this breakpoint after we hit it. */
 176     enum bpdisp disposition;
 177     /* Number assigned to distinguish breakpoints.  */
 178     int number;
 179
 180     /* Address to break at, or NULL if not a breakpoint.  */
 181     CORE_ADDR address;
 182
 183     /* Line number of this address.  Only matters if address is
 184        non-NULL.  */
 185
 186     int line_number;
 187
 188     /* Source file name of this address.  Only matters if address is
 189        non-NULL.  */
 190
 191     char *source_file;
 192
 193     /* Non-zero means a silent breakpoint (don't print frame info
 194        if we stop here). */
 195     unsigned char silent;
 196     /* Number of stops at this breakpoint that should
 197        be continued automatically before really stopping.  */
 198     int ignore_count;
 199     /* "Real" contents of byte where breakpoint has been inserted.
 200        Valid only when breakpoints are in the program.  Under the complete
 201        control of the target insert_breakpoint and remove_breakpoint routines.
 202        No other code should assume anything about the value(s) here.  */
 203     char shadow_contents[BREAKPOINT_MAX];
 204     /* Nonzero if this breakpoint is now inserted.  Only matters if address
 205        is non-NULL.  */
 206     char inserted;
 207     /* Nonzero if this is not the first breakpoint in the list
 208        for the given address.  Only matters if address is non-NULL.  */
 209     char duplicate;
 210     /* Chain of command lines to execute when this breakpoint is hit.  */
 211     struct command_line *commands;
 212     /* Stack depth (address of frame).  If nonzero, break only if fp
 213        equals this.  */
 214     CORE_ADDR frame;
 215     /* Conditional.  Break only if this expression's value is nonzero.  */
 216     struct expression *cond;
 217
 218     /* String we used to set the breakpoint (malloc'd).  Only matters if
 219        address is non-NULL.  */
 220     char *addr_string;
 221     /* Language we used to set the breakpoint.  */
 222     enum language language;
 223     /* Input radix we used to set the breakpoint.  */
 224     int input_radix;
 225     /* String form of the breakpoint condition (malloc'd), or NULL if there
 226        is no condition.  */
 227     char *cond_string;
 228     /* String form of exp (malloc'd), or NULL if none.  */
 229     char *exp_string;
 230
 231     /* The expression we are watching, or NULL if not a watchpoint.  */
 232     struct expression *exp;
 233     /* The largest block within which it is valid, or NULL if it is
 234        valid anywhere (e.g. consists just of global symbols).  */
 235     struct block *exp_valid_block;
 236     /* Value of the watchpoint the last time we checked it.  */
 237     value_ptr val;
 238
 239     /* Holds the value chain for a hardware watchpoint expression.  */
 240     value_ptr val_chain;
 241
 242     /* Holds the address of the related watchpoint_scope breakpoint
 243        when using watchpoints on local variables (might the concept
 244        of a related breakpoint be useful elsewhere, if not just call
 245        it the watchpoint_scope breakpoint or something like that. FIXME).  */
 246     struct breakpoint *related_breakpoint;
 247
 248     /* Holds the frame address which identifies the frame this watchpoint
 249        should be evaluated in, or NULL if the watchpoint should be evaluated
 250        on the outermost frame.  */
 251     CORE_ADDR watchpoint_frame;
 252
 253     /* Thread number for thread-specific breakpoint, or -1 if don't care */
 254     int thread;
 255
 256     /* Count of the number of times this breakpoint was taken, dumped
 257        with the info, but not used for anything else.  Useful for
 258        seeing how many times you hit a break prior to the program
 259        aborting, so you can back up to just before the abort.  */
 260     int hit_count;
 261
 262     /* Filename of a dynamically-linked library (dll), used for
 263        bp_catch_load and bp_catch_unload (malloc'd), or NULL if any
 264        library is significant.  */
 265     char *dll_pathname;
 266
 267     /* Filename of a dll whose state change (e.g., load or unload)
 268        triggered this catchpoint.  This field is only vaid immediately
 269        after this catchpoint has triggered.  */
 270     char *triggered_dll_pathname;
 271
 272     /* Process id of a child process whose forking triggered this
 273        catchpoint.  This field is only vaid immediately after this
 274        catchpoint has triggered.  */
 275     int forked_inferior_pid;
 276
 277     /* Filename of a program whose exec triggered this catchpoint.
 278        This field is only vaid immediately after this catchpoint has
 279        triggered.  */
 280     char *exec_pathname;
 281
 282     asection *section;
 283   };
 284 \f
 285 /* The following stuff is an abstract data type "bpstat" ("breakpoint
 286    status").  This provides the ability to determine whether we have
 287    stopped at a breakpoint, and what we should do about it.  */
 288
 289 typedef struct bpstats *bpstat;
 290
 291 /* Interface:  */
 292 /* Clear a bpstat so that it says we are not at any breakpoint.
 293    Also free any storage that is part of a bpstat.  */
 294 extern void bpstat_clear PARAMS ((bpstat *));
 295
 296 /* Return a copy of a bpstat.  Like "bs1 = bs2" but all storage that
 297    is part of the bpstat is copied as well.  */
 298 extern bpstat bpstat_copy PARAMS ((bpstat));
 299
 300 extern bpstat bpstat_stop_status PARAMS ((CORE_ADDR *, int));
 301 \f
 302 /* This bpstat_what stuff tells wait_for_inferior what to do with a
 303    breakpoint (a challenging task).  */
 304
 305 enum bpstat_what_main_action
 306   {
 307     /* Perform various other tests; that is, this bpstat does not
 308        say to perform any action (e.g. failed watchpoint and nothing
 309        else).  */
 310     BPSTAT_WHAT_KEEP_CHECKING,
 311
 312     /* Rather than distinguish between noisy and silent stops here, it
 313        might be cleaner to have bpstat_print make that decision (also
 314        taking into account stop_print_frame and source_only).  But the
 315        implications are a bit scary (interaction with auto-displays, etc.),
 316        so I won't try it.  */
 317
 318     /* Stop silently.  */
 319     BPSTAT_WHAT_STOP_SILENT,
 320
 321     /* Stop and print.  */
 322     BPSTAT_WHAT_STOP_NOISY,
 323
 324     /* Remove breakpoints, single step once, then put them back in and
 325        go back to what we were doing.  It's possible that this should be
 326        removed from the main_action and put into a separate field, to more
 327        cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE.  */
 328     BPSTAT_WHAT_SINGLE,
 329
 330     /* Set longjmp_resume breakpoint, remove all other breakpoints,
 331        and continue.  The "remove all other breakpoints" part is required
 332        if we are also stepping over another breakpoint as well as doing
 333        the longjmp handling.  */
 334     BPSTAT_WHAT_SET_LONGJMP_RESUME,
 335
 336     /* Clear longjmp_resume breakpoint, then handle as
 337        BPSTAT_WHAT_KEEP_CHECKING.  */
 338     BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
 339
 340     /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE.  */
 341     BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE,
 342
 343     /* Clear step resume breakpoint, and keep checking.  */
 344     BPSTAT_WHAT_STEP_RESUME,
 345
 346     /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep
 347        checking.  */
 348     BPSTAT_WHAT_THROUGH_SIGTRAMP,
 349
 350     /* Check the dynamic linker's data structures for new libraries, then
 351        keep checking.  */
 352     BPSTAT_WHAT_CHECK_SHLIBS,
 353
 354     /* Check the dynamic linker's data structures for new libraries, then
 355        resume out of the dynamic linker's callback, stop and print.  */
 356     BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK,
 357
 358     /* This is just used to keep track of how many enums there are.  */
 359     BPSTAT_WHAT_LAST
 360   };
 361
 362 struct bpstat_what
 363   {
 364     enum bpstat_what_main_action main_action;
 365
 366     /* Did we hit a call dummy breakpoint?  This only goes with a main_action
 367        of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
 368        continuing from a call dummy without popping the frame is not a
 369        useful one).  */
 370     int call_dummy;
 371   };
 372
 373 /* Tell what to do about this bpstat.  */
 374 struct bpstat_what bpstat_what PARAMS ((bpstat));
 375 \f
 376 /* Find the bpstat associated with a breakpoint.  NULL otherwise. */
 377 bpstat bpstat_find_breakpoint PARAMS ((bpstat, struct breakpoint *));
 378
 379 /* Find a step_resume breakpoint associated with this bpstat.
 380    (If there are multiple step_resume bp's on the list, this function
 381    will arbitrarily pick one.)
 382
 383    It is an error to use this function if BPSTAT doesn't contain a
 384    step_resume breakpoint.
 385
 386    See wait_for_inferior's use of this function.
 387  */
 388 extern struct breakpoint *
 389   bpstat_find_step_resume_breakpoint PARAMS ((bpstat));
 390
 391 /* Nonzero if a signal that we got in wait() was due to circumstances
 392    explained by the BS.  */
 393 /* Currently that is true if we have hit a breakpoint, or if there is
 394    a watchpoint enabled.  */
 395 #define bpstat_explains_signal(bs) ((bs) != NULL)
 396
 397 /* Nonzero if we should step constantly (e.g. watchpoints on machines
 398    without hardware support).  This isn't related to a specific bpstat,
 399    just to things like whether watchpoints are set.  */
 400 extern int bpstat_should_step PARAMS ((void));
 401
 402 /* Nonzero if there are enabled hardware watchpoints. */
 403 extern int bpstat_have_active_hw_watchpoints PARAMS ((void));
 404
 405 /* Print a message indicating what happened.  Returns nonzero to
 406    say that only the source line should be printed after this (zero
 407    return means print the frame as well as the source line).  */
 408 extern int bpstat_print PARAMS ((bpstat));
 409
 410 /* Return the breakpoint number of the first breakpoint we are stopped
 411    at.  *BSP upon return is a bpstat which points to the remaining
 412    breakpoints stopped at (but which is not guaranteed to be good for
 413    anything but further calls to bpstat_num).
 414    Return 0 if passed a bpstat which does not indicate any breakpoints.  */
 415 extern int bpstat_num PARAMS ((bpstat *));
 416
 417 /* Perform actions associated with having stopped at *BSP.  Actually, we just
 418    use this for breakpoint commands.  Perhaps other actions will go here
 419    later, but this is executed at a late time (from the command loop).  */
 420 extern void bpstat_do_actions PARAMS ((bpstat *));
 421
 422 /* Modify BS so that the actions will not be performed.  */
 423 extern void bpstat_clear_actions PARAMS ((bpstat));
 424
 425 /* Given a bpstat that records zero or more triggered eventpoints, this
 426    function returns another bpstat which contains only the catchpoints
 427    on that first list, if any.
 428  */
 429 extern void bpstat_get_triggered_catchpoints PARAMS ((bpstat, bpstat *));
 430
 431 /* Implementation:  */
 432 struct bpstats
 433   {
 434     /* Linked list because there can be two breakpoints at the same
 435        place, and a bpstat reflects the fact that both have been hit.  */
 436     bpstat next;
 437     /* Breakpoint that we are at.  */
 438     struct breakpoint *breakpoint_at;
 439     /* Commands left to be done.  */
 440     struct command_line *commands;
 441     /* Old value associated with a watchpoint.  */
 442     value_ptr old_val;
 443
 444     /* Nonzero if this breakpoint tells us to print the frame.  */
 445     char print;
 446
 447     /* Nonzero if this breakpoint tells us to stop.  */
 448     char stop;
 449
 450     /* Function called by bpstat_print to print stuff associated with
 451        this element of the bpstat chain.  Returns 0 or 1 just like
 452        bpstat_print, or -1 if it can't deal with it.  */
 453     int (*print_it) PARAMS ((bpstat bs));
 454   };
 455
 456 enum inf_context
 457   {
 458     inf_starting,
 459     inf_running,
 460     inf_exited
 461   };
 462 \f
 463
 464 /* Prototypes for breakpoint-related functions.  */
 465
 466 /* Forward declarations for prototypes */
 467 struct frame_info;
 468
 469 extern int breakpoint_here_p PARAMS ((CORE_ADDR));
 470
 471 extern int breakpoint_inserted_here_p PARAMS ((CORE_ADDR));
 472
 473 extern int frame_in_dummy PARAMS ((struct frame_info *));
 474
 475 extern int breakpoint_thread_match PARAMS ((CORE_ADDR, int));
 476
 477 extern void until_break_command PARAMS ((char *, int));
 478
 479 extern void breakpoint_re_set PARAMS ((void));
 480
 481 extern void breakpoint_re_set_thread PARAMS ((struct breakpoint *));
 482
 483 extern int ep_is_exception_catchpoint PARAMS ((struct breakpoint *));
 484
 485 extern struct breakpoint *set_momentary_breakpoint
 486   PARAMS ((struct symtab_and_line, struct frame_info *, enum bptype));
 487
 488 extern void set_ignore_count PARAMS ((int, int, int));
 489
 490 extern void set_default_breakpoint PARAMS ((int, CORE_ADDR,
 491                                             struct symtab *, int));
 492
 493 extern void mark_breakpoints_out PARAMS ((void));
 494
 495 extern void breakpoint_init_inferior PARAMS ((enum inf_context));
 496
 497 extern void delete_breakpoint PARAMS ((struct breakpoint *));
 498
 499 extern void breakpoint_auto_delete PARAMS ((bpstat));
 500
 501 extern void breakpoint_clear_ignore_counts PARAMS ((void));
 502
 503 extern void break_command PARAMS ((char *, int));
 504
 505 extern void tbreak_command PARAMS ((char *, int));
 506
 507 extern int insert_breakpoints PARAMS ((void));
 508
 509 extern int remove_breakpoints PARAMS ((void));
 510
 511 /* This function can be used to physically insert eventpoints from the
 512    specified traced inferior process, without modifying the breakpoint
 513    package's state.  This can be useful for those targets which support
 514    following the processes of a fork() or vfork() system call, when both
 515    of the resulting two processes are to be followed.  */
 516 extern int reattach_breakpoints PARAMS ((int));
 517
 518 /* This function can be used to update the breakpoint package's state
 519    after an exec() system call has been executed.
 520
 521    This function causes the following:
 522
 523    - All eventpoints are marked "not inserted".
 524    - All eventpoints with a symbolic address are reset such that
 525    the symbolic address must be reevaluated before the eventpoints
 526    can be reinserted.
 527    - The solib breakpoints are explicitly removed from the breakpoint
 528    list.
 529    - A step-resume breakpoint, if any, is explicitly removed from the
 530    breakpoint list.
 531    - All eventpoints without a symbolic address are removed from the
 532    breakpoint list. */
 533 extern void update_breakpoints_after_exec PARAMS ((void));
 534
 535 /* This function can be used to physically remove hardware breakpoints
 536    and watchpoints from the specified traced inferior process, without
 537    modifying the breakpoint package's state.  This can be useful for
 538    those targets which support following the processes of a fork() or
 539    vfork() system call, when one of the resulting two processes is to
 540    be detached and allowed to run free.
 541
 542    It is an error to use this function on the process whose id is
 543    inferior_pid.  */
 544 extern int detach_breakpoints PARAMS ((int));
 545
 546 extern void enable_longjmp_breakpoint PARAMS ((void));
 547
 548 extern void disable_longjmp_breakpoint PARAMS ((void));
 549
 550 extern void set_longjmp_resume_breakpoint PARAMS ((CORE_ADDR,
 551                                                    struct frame_info *));
 552 /* These functions respectively disable or reenable all currently
 553    enabled watchpoints.  When disabled, the watchpoints are marked
 554    call_disabled.  When reenabled, they are marked enabled.
 555
 556    The intended client of these functions is infcmd.c\run_stack_dummy.
 557
 558    The inferior must be stopped, and all breakpoints removed, when
 559    these functions are used.
 560
 561    The need for these functions is that on some targets (e.g., HP-UX),
 562    gdb is unable to unwind through the dummy frame that is pushed as
 563    part of the implementation of a call command.  Watchpoints can
 564    cause the inferior to stop in places where this frame is visible,
 565    and that can cause execution control to become very confused.
 566
 567    Note that if a user sets breakpoints in an interactively call
 568    function, the call_disabled watchpoints will have been reenabled
 569    when the first such breakpoint is reached.  However, on targets
 570    that are unable to unwind through the call dummy frame, watches
 571    of stack-based storage may then be deleted, because gdb will
 572    believe that their watched storage is out of scope.  (Sigh.) */
 573 extern void
 574 disable_watchpoints_before_interactive_call_start PARAMS ((void));
 575
 576 extern void
 577 enable_watchpoints_after_interactive_call_stop PARAMS ((void));
 578
 579
 580 extern void clear_breakpoint_hit_counts PARAMS ((void));
 581
 582 /* The following are for displays, which aren't really breakpoints, but
 583    here is as good a place as any for them.  */
 584
 585 extern void disable_current_display PARAMS ((void));
 586
 587 extern void do_displays PARAMS ((void));
 588
 589 extern void disable_display PARAMS ((int));
 590
 591 extern void clear_displays PARAMS ((void));
 592
 593 extern void disable_breakpoint PARAMS ((struct breakpoint *));
 594
 595 extern void enable_breakpoint PARAMS ((struct breakpoint *));
 596
 597 extern void create_solib_event_breakpoint PARAMS ((CORE_ADDR));
 598
 599 extern void remove_solib_event_breakpoints PARAMS ((void));
 600
 601 extern void disable_breakpoints_in_shlibs PARAMS ((int silent));
 602
 603 extern void re_enable_breakpoints_in_shlibs PARAMS ((void));
 604
 605 extern void create_solib_load_event_breakpoint PARAMS ((char *, int,
 606                                                         char *, char *));
 607
 608 extern void create_solib_unload_event_breakpoint PARAMS ((char *, int,
 609                                                           char *, char *));
 610
 611 extern void create_fork_event_catchpoint PARAMS ((int, char *));
 612
 613 extern void create_vfork_event_catchpoint PARAMS ((int, char *));
 614
 615 extern void create_exec_event_catchpoint PARAMS ((int, char *));
 616
 617 /* This function returns TRUE if ep is a catchpoint. */
 618 extern int ep_is_catchpoint PARAMS ((struct breakpoint *));
 619
 620 /* This function returns TRUE if ep is a catchpoint of a
 621    shared library (aka dynamically-linked library) event,
 622    such as a library load or unload. */
 623 extern int ep_is_shlib_catchpoint PARAMS ((struct breakpoint *));
 624
 625 extern struct breakpoint *set_breakpoint_sal PARAMS ((struct symtab_and_line));
 626
 627 #endif /* !defined (BREAKPOINT_H) */