/* Data structures associated with breakpoints in GDB.
- Copyright (C) 1992-2004, 2007-2012 Free Software Foundation, Inc.
+ Copyright (C) 1992-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "vec.h"
#include "ax.h"
+#include "command.h"
+#include "break-common.h"
+#include "probe.h"
struct value;
struct block;
-struct breakpoint_object;
+struct gdbpy_breakpoint_object;
+struct gdbscm_breakpoint_object;
struct get_number_or_range_state;
struct thread_info;
struct bpstats;
bp_longjmp, /* secret breakpoint to find longjmp() */
bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
+ /* Breakpoint placed to the same location(s) like bp_longjmp but used to
+ protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
+ one bp_call_dummy are chained together by related_breakpoint for each
+ DUMMY_FRAME. */
+ bp_longjmp_call_dummy,
+
/* An internal breakpoint that is installed on the unwinder's
debug hook. */
bp_exception,
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)). */
+ /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
+ is chained with by related_breakpoint. */
bp_call_dummy,
/* A breakpoint set on std::terminate, that is used to catch
bp_fast_tracepoint,
bp_static_tracepoint,
+ /* A dynamic printf stops at the given location, does a formatted
+ print, then automatically continues. (Although this is sort of
+ like a macro packaging up standard breakpoint functionality,
+ GDB doesn't have a way to construct types of breakpoint from
+ elements of behavior.) */
+ bp_dprintf,
+
/* Event for JIT compiled code generation or deletion. */
bp_jit_event,
disp_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 */
- };
-
-
/* Status of breakpoint conditions used when synchronizing
conditions with the target. */
/* Vector of conditions the target should evaluate if it supports target-side
breakpoint conditions. */
VEC(agent_expr_p) *conditions;
+
+ /* Vector of commands the target should evaluate if it supports
+ target-side breakpoint commands. */
+ VEC(agent_expr_p) *tcommands;
+
+ /* Flag that is true if the breakpoint should be left in place even
+ when GDB is not connected. */
+ int persist;
};
/* GDB maintains two types of information about each breakpoint (or
enum condition_status condition_changed;
- /* Signals that breakpoint conditions need to be re-synched with the
- target. This has no use other than target-side breakpoints. */
+ struct agent_expr *cmd_bytecode;
+
+ /* Signals that breakpoint conditions and/or commands need to be
+ re-synched with the target. This has no use other than
+ target-side breakpoints. */
char needs_update;
/* This location's address is in an unloaded solib, and so this
processor's architectual constraints. */
CORE_ADDR requested_address;
+ /* An additional address assigned with this location. This is currently
+ only used by STT_GNU_IFUNC resolver breakpoints to hold the address
+ of the resolver function. */
+ CORE_ADDR related_address;
+
+ /* If the location comes from a probe point, this is the probe associated
+ with it. */
+ struct bound_probe probe;
+
char *function_name;
/* Details of the placed breakpoint, when inserted. */
it becomes 0 this location is retired. */
int events_till_retirement;
- /* Line number of this address. */
+ /* Line number which was used to place this location.
+
+ Breakpoint placed into a comment keeps it's user specified line number
+ despite ADDRESS resolves into a different line number. */
int line_number;
- /* Source file name of this address. */
+ /* Symtab which was used to place this location. This is used
+ to find the corresponding source file name. */
- char *source_file;
+ struct symtab *symtab;
};
/* This structure is a collection of function pointers that, if available,
This function is called inside `create_breakpoint'. */
void (*create_breakpoints_sal) (struct gdbarch *,
struct linespec_result *,
- struct linespec_sals *, char *,
+ char *, char *,
enum bptype, enum bpdisp, int, int,
int, const struct breakpoint_ops *,
int, int, int, unsigned);
This function is called inside `addr_string_to_sals'. */
void (*decode_linespec) (struct breakpoint *, char **,
struct symtabs_and_lines *);
+
+ /* Return true if this breakpoint explains a signal. See
+ bpstat_explains_signal. */
+ int (*explains_signal) (struct breakpoint *, enum gdb_signal);
+
+ /* Called after evaluating the breakpoint's condition,
+ and only if it evaluated true. */
+ void (*after_condition_true) (struct bpstats *bs);
};
/* Helper for breakpoint_ops->print_recreate implementations. Prints
/* String form of the breakpoint condition (malloc'd), or NULL if
there is no condition. */
char *cond_string;
- /* String form of exp to use for displaying to the user
- (malloc'd), or NULL if none. */
+
+ /* String form of extra parameters, or NULL if there are none.
+ Malloc'd. */
+ char *extra_string;
/* Holds the address of the related watchpoint_scope breakpoint
when using watchpoints on local variables (might the concept of
Python object that has been associated with this breakpoint.
This is always NULL for a GDB that is not script enabled. It
can sometimes be NULL for enabled GDBs as not all breakpoint
- types are tracked by the Python scripting API. */
- struct breakpoint_object *py_bp_object;
+ types are tracked by the scripting language API. */
+ struct gdbpy_breakpoint_object *py_bp_object;
+
+ /* Same as py_bp_object, but for Scheme. */
+ struct gdbscm_breakpoint_object *scm_bp_object;
};
/* An instance of this type is used to represent a watchpoint. It
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;
+ const struct block *exp_valid_block;
/* The conditional expression if any. */
struct expression *cond_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 *cond_exp_valid_block;
+ const struct block *cond_exp_valid_block;
/* Value of the watchpoint the last time we checked it, or NULL when
we do not know the value yet or the value was not readable. VAL
is never lazy. */
/* Find the bpstat associated with a breakpoint. NULL otherwise. */
bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *);
-/* Nonzero if a signal that we got in wait() was due to circumstances
- explained by the BS. */
-/* Currently that is true if we have hit a breakpoint, or if there is
- a watchpoint enabled. */
-#define bpstat_explains_signal(bs) ((bs) != NULL)
+/* Nonzero if a signal that we got in target_wait() was due to
+ circumstances explained by the bpstat; the signal is therefore not
+ random. */
+extern int bpstat_explains_signal (bpstat, enum gdb_signal);
/* Nonzero is this bpstat causes a stop. */
extern int bpstat_causes_stop (bpstat);
extern int software_breakpoint_inserted_here_p (struct address_space *,
CORE_ADDR);
+extern int single_step_breakpoint_inserted_here_p (struct address_space *,
+ CORE_ADDR);
+
/* Returns true if there's a hardware watchpoint or access watchpoint
inserted in the range defined by ADDR and LEN. */
extern int hardware_watchpoint_inserted_in_range (struct address_space *,
extern int breakpoint_thread_match (struct address_space *,
CORE_ADDR, ptid_t);
+/* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
+ same breakpoint location. In most targets, this can only be true
+ if ASPACE1 matches ASPACE2. On targets that have global
+ breakpoints, the address space doesn't really matter. */
+
+extern int breakpoint_address_match (struct address_space *aspace1,
+ CORE_ADDR addr1,
+ struct address_space *aspace2,
+ CORE_ADDR addr2);
+
extern void until_break_command (char *, int, int);
/* Initialize a struct bp_location. */
extern void breakpoint_auto_delete (bpstat);
+typedef void (*walk_bp_location_callback) (struct bp_location *, void *);
+
+extern void iterate_over_bp_locations (walk_bp_location_callback);
+
/* Return the chain of command lines to execute when this breakpoint
is hit. */
extern struct command_line *breakpoint_commands (struct breakpoint *b);
extern void rwatch_command_wrapper (char *, int, int);
extern void tbreak_command (char *, int);
+extern struct breakpoint_ops base_breakpoint_ops;
extern struct breakpoint_ops bkpt_breakpoint_ops;
+extern struct breakpoint_ops tracepoint_breakpoint_ops;
+extern struct breakpoint_ops dprintf_breakpoint_ops;
extern void initialize_breakpoint_ops (void);
extern void
add_catch_command (char *name, char *docstring,
- void (*sfunc) (char *args, int from_tty,
- struct cmd_list_element *command),
- char **(*completer) (struct cmd_list_element *cmd,
- char *text, char *word),
+ cmd_sfunc_ftype *sfunc,
+ completer_ftype *completer,
void *user_data_catch,
void *user_data_tcatch);
char *addr_string,
const struct breakpoint_ops *ops,
int tempflag,
+ int enabled,
int from_tty);
+extern void init_catchpoint (struct breakpoint *b,
+ struct gdbarch *gdbarch, int tempflag,
+ char *cond_string,
+ const struct breakpoint_ops *ops);
+
/* Add breakpoint B on the breakpoint list, and notify the user, the
target and breakpoint_created observers of its existence. If
INTERNAL is non-zero, the breakpoint number will be allocated from
extern int create_breakpoint (struct gdbarch *gdbarch, char *arg,
char *cond_string, int thread,
- int parse_condition_and_thread,
+ char *extra_string,
+ int parse_arg,
int tempflag, enum bptype wanted_type,
int ignore_count,
enum auto_boolean pending_break_support,
It is an error to use this function on the process whose id is
inferior_ptid. */
-extern int detach_breakpoints (int);
+extern int detach_breakpoints (ptid_t ptid);
/* This function is called when program space PSPACE is about to be
deleted. It takes care of updating breakpoints to not reference
/* Mark all longjmp breakpoints from THREAD for later deletion. */
extern void delete_longjmp_breakpoint_at_next_stop (int thread);
+extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void);
+extern void check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp);
+
extern void enable_overlay_breakpoints (void);
extern void disable_overlay_breakpoints (void);
extern void disable_breakpoints_in_shlibs (void);
/* This function returns TRUE if ep is a catchpoint. */
-extern int ep_is_catchpoint (struct breakpoint *);
+extern int is_catchpoint (struct breakpoint *);
+
+/* Shared helper function (MI and CLI) for creating and installing
+ a shared object event catchpoint. */
+extern void add_solib_catchpoint (char *arg, int is_load, int is_temp,
+ int enabled);
/* Enable breakpoints and delete when hit. Called with ARG == NULL
deletes all breakpoints. */
/* Find a tracepoint by parsing a number in the supplied string. */
extern struct tracepoint *
get_tracepoint_by_number (char **arg,
- struct get_number_or_range_state *state,
- int optional_p);
+ struct get_number_or_range_state *state);
/* Return a vector of all tracepoints currently defined. The vector
is newly allocated; the caller should free when done with it. */
/* Attempt to determine architecture of location identified by SAL. */
extern struct gdbarch *get_sal_arch (struct symtab_and_line sal);
-extern void handle_solib_event (void);
+extern void breakpoint_free_objfile (struct objfile *objfile);
+
+extern char *ep_parse_optional_if_clause (char **arg);
#endif /* !defined (BREAKPOINT_H) */
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