/* Data structures associated with breakpoints in GDB.
Copyright (C) 1992, 93, 94, 95, 96, 98, 1999 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#if !defined (BREAKPOINT_H)
#define BREAKPOINT_H 1
#include "frame.h"
#include "value.h"
+#include "gdb-events.h"
+
/* This is the maximum number of bytes a breakpoint instruction can take.
Feel free to increase it. It's just used in a few places to size
arrays that should be independent of the target architecture. */
here. This includes:
* single-step (for machines where we have to simulate single stepping)
- (probably, though perhaps it is better for it to look as much as
- possible like a single-step to wait_for_inferior). */
-
-enum bptype {
- bp_none = 0, /* Eventpoint has been deleted. */
- bp_breakpoint, /* Normal breakpoint */
- bp_hardware_breakpoint, /* Hardware assisted breakpoint */
- bp_until, /* used by until command */
- bp_finish, /* used by finish command */
- bp_watchpoint, /* Watchpoint */
- bp_hardware_watchpoint, /* Hardware assisted watchpoint */
- bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
- bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
- bp_longjmp, /* secret breakpoint to find longjmp() */
- bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
-
- /* Used by wait_for_inferior for stepping over subroutine calls, for
- stepping over signal handlers, and for skipping prologues. */
- bp_step_resume,
-
- /* Used by wait_for_inferior for stepping over signal handlers. */
- bp_through_sigtramp,
-
- /* Used to detect when a watchpoint expression has gone out of
- scope. These breakpoints are usually not visible to the user.
-
- This breakpoint has some interesting properties:
+ (probably, though perhaps it is better for it to look as much as
+ possible like a single-step to wait_for_inferior). */
+
+enum bptype
+ {
+ bp_none = 0, /* Eventpoint has been deleted. */
+ bp_breakpoint, /* Normal breakpoint */
+ bp_hardware_breakpoint, /* Hardware assisted breakpoint */
+ bp_until, /* used by until command */
+ bp_finish, /* used by finish command */
+ bp_watchpoint, /* Watchpoint */
+ bp_hardware_watchpoint, /* Hardware assisted watchpoint */
+ bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
+ bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
+ bp_longjmp, /* secret breakpoint to find longjmp() */
+ bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
+
+ /* Used by wait_for_inferior for stepping over subroutine calls, for
+ stepping over signal handlers, and for skipping prologues. */
+ bp_step_resume,
+
+ /* Used by wait_for_inferior for stepping over signal handlers. */
+ bp_through_sigtramp,
+
+ /* Used to detect when a watchpoint expression has gone out of
+ scope. These breakpoints are usually not visible to the user.
+
+ This breakpoint has some interesting properties:
1) There's always a 1:1 mapping between watchpoints
on local variables and watchpoint_scope breakpoints.
associated with when hit.
3) It can never be disabled. */
- bp_watchpoint_scope,
-
- /* The breakpoint at the end of a call dummy. */
- /* FIXME: What if the function we are calling longjmp()s out of the
- call, or the user gets out with the "return" command? We currently
- have no way of cleaning up the breakpoint in these (obscure) situations.
- (Probably can solve this by noticing longjmp, "return", etc., it's
- similar to noticing when a watchpoint on a local variable goes out
- of scope (with hardware support for watchpoints)). */
- bp_call_dummy,
-
- /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
- code in the inferior to run when significant events occur in the
- dynamic linker (for example a library is loaded or unloaded).
-
- By placing a breakpoint in this magic code GDB will get control
- when these significant events occur. GDB can then re-examine
- the dynamic linker's data structures to discover any newly loaded
- dynamic libraries. */
- bp_shlib_event,
-
- /* These breakpoints are used to implement the "catch load" command
- on platforms whose dynamic linkers support such functionality. */
- bp_catch_load,
-
- /* These breakpoints are used to implement the "catch unload" command
- on platforms whose dynamic linkers support such functionality. */
- bp_catch_unload,
-
- /* These are not really breakpoints, but are catchpoints that
- implement the "catch fork", "catch vfork" and "catch exec" commands
- on platforms whose kernel support such functionality. (I.e.,
- kernels which can raise an event when a fork or exec occurs, as
- opposed to the debugger setting breakpoints on functions named
- "fork" or "exec".) */
- bp_catch_fork,
- bp_catch_vfork,
- bp_catch_exec,
-
- /* These are catchpoints to implement "catch catch" and "catch throw"
- commands for C++ exception handling. */
- bp_catch_catch,
- bp_catch_throw
-
-
-};
+ bp_watchpoint_scope,
+
+ /* The breakpoint at the end of a call dummy. */
+ /* FIXME: What if the function we are calling longjmp()s out of the
+ call, or the user gets out with the "return" command? We currently
+ have no way of cleaning up the breakpoint in these (obscure) situations.
+ (Probably can solve this by noticing longjmp, "return", etc., it's
+ similar to noticing when a watchpoint on a local variable goes out
+ of scope (with hardware support for watchpoints)). */
+ bp_call_dummy,
+
+ /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
+ code in the inferior to run when significant events occur in the
+ dynamic linker (for example a library is loaded or unloaded).
+
+ By placing a breakpoint in this magic code GDB will get control
+ when these significant events occur. GDB can then re-examine
+ the dynamic linker's data structures to discover any newly loaded
+ dynamic libraries. */
+ bp_shlib_event,
+
+ /* Some multi-threaded systems can arrange for a location in the
+ inferior to be executed when certain thread-related events occur
+ (such as thread creation or thread death).
+
+ By placing a breakpoint at one of these locations, GDB will get
+ control when these events occur. GDB can then update its thread
+ lists etc. */
+
+ bp_thread_event,
+
+ /* These breakpoints are used to implement the "catch load" command
+ on platforms whose dynamic linkers support such functionality. */
+ bp_catch_load,
+
+ /* These breakpoints are used to implement the "catch unload" command
+ on platforms whose dynamic linkers support such functionality. */
+ bp_catch_unload,
+
+ /* These are not really breakpoints, but are catchpoints that
+ implement the "catch fork", "catch vfork" and "catch exec" commands
+ on platforms whose kernel support such functionality. (I.e.,
+ kernels which can raise an event when a fork or exec occurs, as
+ opposed to the debugger setting breakpoints on functions named
+ "fork" or "exec".) */
+ bp_catch_fork,
+ bp_catch_vfork,
+ bp_catch_exec,
+
+ /* These are catchpoints to implement "catch catch" and "catch throw"
+ commands for C++ exception handling. */
+ bp_catch_catch,
+ bp_catch_throw
+
+
+ };
/* States of enablement of breakpoint. */
-enum enable {
- disabled, /* The eventpoint is inactive, and cannot trigger. */
- enabled, /* The eventpoint is active, and can trigger. */
- shlib_disabled, /* The eventpoint's address is within an unloaded solib.
- The eventpoint will be automatically enabled & reset
- when that solib is loaded. */
- call_disabled /* The eventpoint has been disabled while a call into
- the inferior is "in flight", because some eventpoints
- interfere with the implementation of a call on some
- targets. The eventpoint will be automatically enabled
- & reset when the call "lands" (either completes, or
- stops at another eventpoint). */
-};
+enum enable
+ {
+ disabled, /* The eventpoint is inactive, and cannot trigger. */
+ enabled, /* The eventpoint is active, and can trigger. */
+ shlib_disabled, /* The eventpoint's address is in an unloaded solib.
+ The eventpoint will be automatically enabled
+ and reset when that solib is loaded. */
+ call_disabled, /* The eventpoint has been disabled while a call
+ into the inferior is "in flight", because some
+ eventpoints interfere with the implementation of
+ a call on some targets. The eventpoint will be
+ automatically enabled and reset when the call
+ "lands" (either completes, or stops at another
+ eventpoint). */
+ permanent /* There is a breakpoint instruction hard-wired into
+ the target's code. Don't try to write another
+ breakpoint instruction on top of it, or restore
+ its value. Step over it using the architecture's
+ SKIP_INSN macro. */
+ };
/* Disposition of breakpoint. Ie: what to do after hitting it. */
-enum bpdisp {
- del, /* Delete it */
- del_at_next_stop, /* Delete at next stop, whether hit or not */
- disable, /* Disable it */
- donttouch /* Leave it alone */
-};
+enum bpdisp
+ {
+ del, /* Delete it */
+ del_at_next_stop, /* Delete at next stop, whether hit or not */
+ disable, /* Disable it */
+ donttouch /* Leave it alone */
+ };
+
+enum target_hw_bp_type
+ {
+ hw_write = 0, /* Common HW watchpoint */
+ hw_read = 1, /* Read HW watchpoint */
+ hw_access = 2, /* Access HW watchpoint */
+ hw_execute = 3 /* Execute HW breakpoint */
+ };
/* Note that the ->silent field is not currently used by any commands
(though the code is in there if it was to be, and set_raw_breakpoint
/* This is for a breakpoint or a watchpoint. */
struct breakpoint
-{
- struct breakpoint *next;
- /* Type of breakpoint. */
- enum bptype type;
- /* Zero means disabled; remember the info but don't break here. */
- enum enable enable;
- /* What to do with this breakpoint after we hit it. */
- enum bpdisp disposition;
- /* Number assigned to distinguish breakpoints. */
- int number;
-
- /* Address to break at, or NULL if not a breakpoint. */
- CORE_ADDR address;
-
- /* Line number of this address. Only matters if address is
- non-NULL. */
-
- int line_number;
-
- /* Source file name of this address. Only matters if address is
- non-NULL. */
-
- char *source_file;
-
- /* Non-zero means a silent breakpoint (don't print frame info
- if we stop here). */
- unsigned char silent;
- /* Number of stops at this breakpoint that should
- be continued automatically before really stopping. */
- int ignore_count;
- /* "Real" contents of byte where breakpoint has been inserted.
- Valid only when breakpoints are in the program. Under the complete
- control of the target insert_breakpoint and remove_breakpoint routines.
- No other code should assume anything about the value(s) here. */
- char shadow_contents[BREAKPOINT_MAX];
- /* Nonzero if this breakpoint is now inserted. Only matters if address
- is non-NULL. */
- char inserted;
- /* Nonzero if this is not the first breakpoint in the list
- for the given address. Only matters if address is non-NULL. */
- char duplicate;
- /* Chain of command lines to execute when this breakpoint is hit. */
- struct command_line *commands;
- /* Stack depth (address of frame). If nonzero, break only if fp
- equals this. */
- CORE_ADDR frame;
- /* Conditional. Break only if this expression's value is nonzero. */
- struct expression *cond;
-
- /* String we used to set the breakpoint (malloc'd). Only matters if
- address is non-NULL. */
- char *addr_string;
- /* Language we used to set the breakpoint. */
- enum language language;
- /* Input radix we used to set the breakpoint. */
- int input_radix;
- /* String form of the breakpoint condition (malloc'd), or NULL if there
- is no condition. */
- char *cond_string;
- /* String form of exp (malloc'd), or NULL if none. */
- char *exp_string;
-
- /* The expression we are watching, or NULL if not a watchpoint. */
- struct expression *exp;
- /* The largest block within which it is valid, or NULL if it is
- valid anywhere (e.g. consists just of global symbols). */
- struct block *exp_valid_block;
- /* Value of the watchpoint the last time we checked it. */
- value_ptr val;
-
- /* Holds the value chain for a hardware watchpoint expression. */
- value_ptr val_chain;
-
- /* Holds the address of the related watchpoint_scope breakpoint
- when using watchpoints on local variables (might the concept
- of a related breakpoint be useful elsewhere, if not just call
- it the watchpoint_scope breakpoint or something like that. FIXME). */
- struct breakpoint *related_breakpoint;
-
- /* Holds the frame address which identifies the frame this watchpoint
- should be evaluated in, or NULL if the watchpoint should be evaluated
- on the outermost frame. */
- CORE_ADDR watchpoint_frame;
-
- /* Thread number for thread-specific breakpoint, or -1 if don't care */
- int thread;
-
- /* Count of the number of times this breakpoint was taken, dumped
- with the info, but not used for anything else. Useful for
- seeing how many times you hit a break prior to the program
- aborting, so you can back up to just before the abort. */
- int hit_count;
-
- /* Filename of a dynamically-linked library (dll), used for bp_catch_load
- and bp_catch_unload (malloc'd), or NULL if any library is significant. */
- char * dll_pathname;
-
- /* Filename of a dll whose state change (e.g., load or unload)
- triggered this catchpoint. This field is only vaid immediately
- after this catchpoint has triggered. */
- char * triggered_dll_pathname;
-
- /* Process id of a child process whose forking triggered this catchpoint.
- This field is only vaid immediately after this catchpoint has triggered. */
- int forked_inferior_pid;
-
- /* Filename of a program whose exec triggered this catchpoint. This
- field is only vaid immediately after this catchpoint has triggered. */
- char * exec_pathname;
-
- asection *section;
-};
+ {
+ struct breakpoint *next;
+ /* Type of breakpoint. */
+ enum bptype type;
+ /* Zero means disabled; remember the info but don't break here. */
+ enum enable enable;
+ /* What to do with this breakpoint after we hit it. */
+ enum bpdisp disposition;
+ /* Number assigned to distinguish breakpoints. */
+ int number;
+
+ /* Address to break at, or NULL if not a breakpoint. */
+ CORE_ADDR address;
+
+ /* Line number of this address. Only matters if address is
+ non-NULL. */
+
+ int line_number;
+
+ /* Source file name of this address. Only matters if address is
+ non-NULL. */
+
+ char *source_file;
+
+ /* Non-zero means a silent breakpoint (don't print frame info
+ if we stop here). */
+ unsigned char silent;
+ /* Number of stops at this breakpoint that should
+ be continued automatically before really stopping. */
+ int ignore_count;
+ /* "Real" contents of byte where breakpoint has been inserted.
+ Valid only when breakpoints are in the program. Under the complete
+ control of the target insert_breakpoint and remove_breakpoint routines.
+ No other code should assume anything about the value(s) here. */
+ char shadow_contents[BREAKPOINT_MAX];
+ /* Nonzero if this breakpoint is now inserted. Only matters if address
+ is non-NULL. */
+ char inserted;
+ /* Nonzero if this is not the first breakpoint in the list
+ for the given address. Only matters if address is non-NULL. */
+ char duplicate;
+ /* Chain of command lines to execute when this breakpoint is hit. */
+ struct command_line *commands;
+ /* Stack depth (address of frame). If nonzero, break only if fp
+ equals this. */
+ CORE_ADDR frame;
+ /* Conditional. Break only if this expression's value is nonzero. */
+ struct expression *cond;
+
+ /* String we used to set the breakpoint (malloc'd). Only matters if
+ address is non-NULL. */
+ char *addr_string;
+ /* Language we used to set the breakpoint. */
+ enum language language;
+ /* Input radix we used to set the breakpoint. */
+ int input_radix;
+ /* String form of the breakpoint condition (malloc'd), or NULL if there
+ is no condition. */
+ char *cond_string;
+ /* String form of exp (malloc'd), or NULL if none. */
+ char *exp_string;
+
+ /* The expression we are watching, or NULL if not a watchpoint. */
+ struct expression *exp;
+ /* The largest block within which it is valid, or NULL if it is
+ valid anywhere (e.g. consists just of global symbols). */
+ struct block *exp_valid_block;
+ /* Value of the watchpoint the last time we checked it. */
+ value_ptr val;
+
+ /* Holds the value chain for a hardware watchpoint expression. */
+ value_ptr val_chain;
+
+ /* Holds the address of the related watchpoint_scope breakpoint
+ when using watchpoints on local variables (might the concept
+ of a related breakpoint be useful elsewhere, if not just call
+ it the watchpoint_scope breakpoint or something like that. FIXME). */
+ struct breakpoint *related_breakpoint;
+
+ /* Holds the frame address which identifies the frame this watchpoint
+ should be evaluated in, or NULL if the watchpoint should be evaluated
+ on the outermost frame. */
+ CORE_ADDR watchpoint_frame;
+
+ /* Thread number for thread-specific breakpoint, or -1 if don't care */
+ int thread;
+
+ /* Count of the number of times this breakpoint was taken, dumped
+ with the info, but not used for anything else. Useful for
+ seeing how many times you hit a break prior to the program
+ aborting, so you can back up to just before the abort. */
+ int hit_count;
+
+ /* Filename of a dynamically-linked library (dll), used for
+ bp_catch_load and bp_catch_unload (malloc'd), or NULL if any
+ library is significant. */
+ char *dll_pathname;
+
+ /* Filename of a dll whose state change (e.g., load or unload)
+ triggered this catchpoint. This field is only vaid immediately
+ after this catchpoint has triggered. */
+ char *triggered_dll_pathname;
+
+ /* Process id of a child process whose forking triggered this
+ catchpoint. This field is only vaid immediately after this
+ catchpoint has triggered. */
+ int forked_inferior_pid;
+
+ /* Filename of a program whose exec triggered this catchpoint.
+ This field is only vaid immediately after this catchpoint has
+ triggered. */
+ char *exec_pathname;
+
+ asection *section;
+ };
\f
-/* The following stuff is an abstract data type "bpstat" ("breakpoint status").
- This provides the ability to determine whether we have stopped at a
- breakpoint, and what we should do about it. */
+/* The following stuff is an abstract data type "bpstat" ("breakpoint
+ status"). This provides the ability to determine whether we have
+ stopped at a breakpoint, and what we should do about it. */
typedef struct bpstats *bpstat;
/* This bpstat_what stuff tells wait_for_inferior what to do with a
breakpoint (a challenging task). */
-enum bpstat_what_main_action {
- /* Perform various other tests; that is, this bpstat does not
- say to perform any action (e.g. failed watchpoint and nothing
- else). */
- BPSTAT_WHAT_KEEP_CHECKING,
-
- /* Rather than distinguish between noisy and silent stops here, it
- might be cleaner to have bpstat_print make that decision (also
- taking into account stop_print_frame and source_only). But the
- implications are a bit scary (interaction with auto-displays, etc.),
- so I won't try it. */
-
- /* Stop silently. */
- BPSTAT_WHAT_STOP_SILENT,
-
- /* Stop and print. */
- BPSTAT_WHAT_STOP_NOISY,
-
- /* Remove breakpoints, single step once, then put them back in and
- go back to what we were doing. It's possible that this should be
- removed from the main_action and put into a separate field, to more
- cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
- BPSTAT_WHAT_SINGLE,
-
- /* Set longjmp_resume breakpoint, remove all other breakpoints,
- and continue. The "remove all other breakpoints" part is required
- if we are also stepping over another breakpoint as well as doing
- the longjmp handling. */
- BPSTAT_WHAT_SET_LONGJMP_RESUME,
-
- /* Clear longjmp_resume breakpoint, then handle as
- BPSTAT_WHAT_KEEP_CHECKING. */
- BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
-
- /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */
- BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE,
-
- /* Clear step resume breakpoint, and keep checking. */
- BPSTAT_WHAT_STEP_RESUME,
-
- /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep
- checking. */
- BPSTAT_WHAT_THROUGH_SIGTRAMP,
-
- /* Check the dynamic linker's data structures for new libraries, then
- keep checking. */
- BPSTAT_WHAT_CHECK_SHLIBS,
-
- /* Check the dynamic linker's data structures for new libraries, then
- resume out of the dynamic linker's callback, stop and print. */
- BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK,
-
- /* This is just used to keep track of how many enums there are. */
- BPSTAT_WHAT_LAST
-};
-
-struct bpstat_what {
- enum bpstat_what_main_action main_action;
-
- /* Did we hit a call dummy breakpoint? This only goes with a main_action
- of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
- continuing from a call dummy without popping the frame is not a
- useful one). */
- int call_dummy;
-};
+enum bpstat_what_main_action
+ {
+ /* Perform various other tests; that is, this bpstat does not
+ say to perform any action (e.g. failed watchpoint and nothing
+ else). */
+ BPSTAT_WHAT_KEEP_CHECKING,
+
+ /* Rather than distinguish between noisy and silent stops here, it
+ might be cleaner to have bpstat_print make that decision (also
+ taking into account stop_print_frame and source_only). But the
+ implications are a bit scary (interaction with auto-displays, etc.),
+ so I won't try it. */
+
+ /* Stop silently. */
+ BPSTAT_WHAT_STOP_SILENT,
+
+ /* Stop and print. */
+ BPSTAT_WHAT_STOP_NOISY,
+
+ /* Remove breakpoints, single step once, then put them back in and
+ go back to what we were doing. It's possible that this should be
+ removed from the main_action and put into a separate field, to more
+ cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
+ BPSTAT_WHAT_SINGLE,
+
+ /* Set longjmp_resume breakpoint, remove all other breakpoints,
+ and continue. The "remove all other breakpoints" part is required
+ if we are also stepping over another breakpoint as well as doing
+ the longjmp handling. */
+ BPSTAT_WHAT_SET_LONGJMP_RESUME,
+
+ /* Clear longjmp_resume breakpoint, then handle as
+ BPSTAT_WHAT_KEEP_CHECKING. */
+ BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
+
+ /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */
+ BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE,
+
+ /* Clear step resume breakpoint, and keep checking. */
+ BPSTAT_WHAT_STEP_RESUME,
+
+ /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep
+ checking. */
+ BPSTAT_WHAT_THROUGH_SIGTRAMP,
+
+ /* Check the dynamic linker's data structures for new libraries, then
+ keep checking. */
+ BPSTAT_WHAT_CHECK_SHLIBS,
+
+ /* Check the dynamic linker's data structures for new libraries, then
+ resume out of the dynamic linker's callback, stop and print. */
+ BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK,
+
+ /* This is just used to keep track of how many enums there are. */
+ BPSTAT_WHAT_LAST
+ };
+
+struct bpstat_what
+ {
+ enum bpstat_what_main_action main_action;
+
+ /* Did we hit a call dummy breakpoint? This only goes with a main_action
+ of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
+ continuing from a call dummy without popping the frame is not a
+ useful one). */
+ int call_dummy;
+ };
+
+/* The possible return values for print_bpstat, print_it_normal,
+ print_it_done, print_it_noop. */
+enum print_stop_action
+ {
+ PRINT_UNKNOWN = -1,
+ PRINT_SRC_AND_LOC,
+ PRINT_SRC_ONLY,
+ PRINT_NOTHING
+ };
/* Tell what to do about this bpstat. */
struct bpstat_what bpstat_what PARAMS ((bpstat));
step_resume breakpoint.
See wait_for_inferior's use of this function.
- */
+ */
extern struct breakpoint *
-bpstat_find_step_resume_breakpoint PARAMS ((bpstat));
+ bpstat_find_step_resume_breakpoint PARAMS ((bpstat));
/* Nonzero if a signal that we got in wait() was due to circumstances
explained by the BS. */
/* Print a message indicating what happened. Returns nonzero to
say that only the source line should be printed after this (zero
return means print the frame as well as the source line). */
-extern int bpstat_print PARAMS ((bpstat));
+extern enum print_stop_action bpstat_print PARAMS ((bpstat));
/* Return the breakpoint number of the first breakpoint we are stopped
at. *BSP upon return is a bpstat which points to the remaining
/* Given a bpstat that records zero or more triggered eventpoints, this
function returns another bpstat which contains only the catchpoints
on that first list, if any.
- */
+ */
extern void bpstat_get_triggered_catchpoints PARAMS ((bpstat, bpstat *));
-
+
/* Implementation: */
+
+/* Values used to tell the printing routine how to behave for this bpstat. */
+enum bp_print_how
+ {
+ /* This is used when we want to do a normal printing of the reason
+ for stopping. The output will depend on the type of eventpoint
+ we are dealing with. This is the default value, most commonly
+ used. */
+ print_it_normal,
+ /* This is used when nothing should be printed for this bpstat entry. */
+ print_it_noop,
+ /* This is used when everything which needs to be printed has
+ already been printed. But we still want to print the frame. */
+ print_it_done
+ };
+
struct bpstats
-{
- /* Linked list because there can be two breakpoints at the
- same place, and a bpstat reflects the fact that both have been hit. */
- bpstat next;
- /* Breakpoint that we are at. */
- struct breakpoint *breakpoint_at;
- /* Commands left to be done. */
- struct command_line *commands;
- /* Old value associated with a watchpoint. */
- value_ptr old_val;
-
- /* Nonzero if this breakpoint tells us to print the frame. */
- char print;
-
- /* Nonzero if this breakpoint tells us to stop. */
- char stop;
-
- /* Function called by bpstat_print to print stuff associated with
- this element of the bpstat chain. Returns 0 or 1 just like
- bpstat_print, or -1 if it can't deal with it. */
- int (*print_it) PARAMS((bpstat bs));
-};
+ {
+ /* Linked list because there can be two breakpoints at the same
+ place, and a bpstat reflects the fact that both have been hit. */
+ bpstat next;
+ /* Breakpoint that we are at. */
+ struct breakpoint *breakpoint_at;
+ /* Commands left to be done. */
+ struct command_line *commands;
+ /* Old value associated with a watchpoint. */
+ value_ptr old_val;
+
+ /* Nonzero if this breakpoint tells us to print the frame. */
+ char print;
+
+ /* Nonzero if this breakpoint tells us to stop. */
+ char stop;
+
+ /* Tell bpstat_print and print_bp_stop_message how to print stuff
+ associated with this element of the bpstat chain. */
+ enum bp_print_how print_it;
+ };
enum inf_context
-{
- inf_starting,
- inf_running,
- inf_exited
-};
-
+ {
+ inf_starting,
+ inf_running,
+ inf_exited
+ };
+
+/* The possible return values for breakpoint_here_p.
+ We guarantee that zero always means "no breakpoint here". */
+enum breakpoint_here
+ {
+ no_breakpoint_here = 0,
+ ordinary_breakpoint_here,
+ permanent_breakpoint_here
+ };
\f
+
/* Prototypes for breakpoint-related functions. */
-#ifdef __STDC__ /* Forward declarations for prototypes */
+/* Forward declarations for prototypes */
struct frame_info;
-#endif
-extern int breakpoint_here_p PARAMS ((CORE_ADDR));
+extern enum breakpoint_here breakpoint_here_p PARAMS ((CORE_ADDR));
extern int breakpoint_inserted_here_p PARAMS ((CORE_ADDR));
extern void set_ignore_count PARAMS ((int, int, int));
-extern void set_default_breakpoint PARAMS ((int, CORE_ADDR, struct symtab *, int));
+extern void set_default_breakpoint PARAMS ((int, CORE_ADDR,
+ struct symtab *, int));
extern void mark_breakpoints_out PARAMS ((void));
extern void breakpoint_init_inferior PARAMS ((enum inf_context));
+extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *);
+
+extern struct cleanup *make_exec_cleanup_delete_breakpoint (struct breakpoint *);
+
extern void delete_breakpoint PARAMS ((struct breakpoint *));
extern void breakpoint_auto_delete PARAMS ((bpstat));
extern void break_command PARAMS ((char *, int));
+extern void hbreak_command_wrapper PARAMS ((char *, int));
+extern void thbreak_command_wrapper PARAMS ((char *, int));
+extern void rbreak_command_wrapper PARAMS ((char *, int));
+extern void watch_command_wrapper PARAMS ((char *, int));
+extern void awatch_command_wrapper PARAMS ((char *, int));
+extern void rwatch_command_wrapper PARAMS ((char *, int));
extern void tbreak_command PARAMS ((char *, int));
extern int insert_breakpoints PARAMS ((void));
This function causes the following:
- - All eventpoints are marked "not inserted".
- - All eventpoints with a symbolic address are reset such that
- the symbolic address must be reevaluated before the eventpoints
- can be reinserted.
- - The solib breakpoints are explicitly removed from the breakpoint
- list.
- - A step-resume breakpoint, if any, is explicitly removed from the
- breakpoint list.
- - All eventpoints without a symbolic address are removed from the
- breakpoint list. */
+ - All eventpoints are marked "not inserted".
+ - All eventpoints with a symbolic address are reset such that
+ the symbolic address must be reevaluated before the eventpoints
+ can be reinserted.
+ - The solib breakpoints are explicitly removed from the breakpoint
+ list.
+ - A step-resume breakpoint, if any, is explicitly removed from the
+ breakpoint list.
+ - All eventpoints without a symbolic address are removed from the
+ breakpoint list. */
extern void update_breakpoints_after_exec PARAMS ((void));
/* This function can be used to physically remove hardware breakpoints
those targets which support following the processes of a fork() or
vfork() system call, when one of the resulting two processes is to
be detached and allowed to run free.
-
+
It is an error to use this function on the process whose id is
inferior_pid. */
extern int detach_breakpoints PARAMS ((int));
-
+
extern void enable_longjmp_breakpoint PARAMS ((void));
extern void disable_longjmp_breakpoint PARAMS ((void));
extern void
enable_watchpoints_after_interactive_call_stop PARAMS ((void));
-
+
extern void clear_breakpoint_hit_counts PARAMS ((void));
+extern int get_number PARAMS ((char **));
+
+extern int get_number_or_range PARAMS ((char **));
+
/* The following are for displays, which aren't really breakpoints, but
here is as good a place as any for them. */
extern void enable_breakpoint PARAMS ((struct breakpoint *));
-extern void create_solib_event_breakpoint PARAMS ((CORE_ADDR));
+extern void make_breakpoint_permanent PARAMS ((struct breakpoint *));
+
+extern struct breakpoint *create_solib_event_breakpoint PARAMS ((CORE_ADDR));
+
+extern struct breakpoint *create_thread_event_breakpoint PARAMS ((CORE_ADDR));
extern void remove_solib_event_breakpoints PARAMS ((void));
+extern void remove_thread_event_breakpoints PARAMS ((void));
+
extern void disable_breakpoints_in_shlibs PARAMS ((int silent));
extern void re_enable_breakpoints_in_shlibs PARAMS ((void));
-extern void create_solib_load_event_breakpoint PARAMS ((char *, int, char *, char *));
-
-extern void create_solib_unload_event_breakpoint PARAMS ((char *, int, char *, char *));
-
+extern void create_solib_load_event_breakpoint PARAMS ((char *, int,
+ char *, char *));
+
+extern void create_solib_unload_event_breakpoint PARAMS ((char *, int,
+ char *, char *));
+
extern void create_fork_event_catchpoint PARAMS ((int, char *));
-
+
extern void create_vfork_event_catchpoint PARAMS ((int, char *));
extern void create_exec_event_catchpoint PARAMS ((int, char *));
-
+
/* This function returns TRUE if ep is a catchpoint. */
extern int ep_is_catchpoint PARAMS ((struct breakpoint *));
-
+
/* This function returns TRUE if ep is a catchpoint of a
shared library (aka dynamically-linked library) event,
such as a library load or unload. */
extern int ep_is_shlib_catchpoint PARAMS ((struct breakpoint *));
-
+
extern struct breakpoint *set_breakpoint_sal PARAMS ((struct symtab_and_line));
+/* Enable breakpoints and delete when hit. Called with ARG == NULL
+ deletes all breakpoints. */
+extern void delete_command (char *arg, int from_tty);
+
+/* Pull all H/W watchpoints from the target. Return non-zero if the
+ remove fails. */
+extern int remove_hw_watchpoints (void);
+
#endif /* !defined (BREAKPOINT_H) */