/* Data structures associated with breakpoints in GDB.
- Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1992-2004, 2007-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame.h"
#include "value.h"
#include "vec.h"
+#include "ax.h"
struct value;
struct block;
struct thread_info;
struct bpstats;
struct bp_location;
+struct linespec_result;
+struct linespec_sals;
/* 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
automatically enabled and reset when the
call "lands" (either completes, or stops
at another eventpoint). */
- bp_startup_disabled, /* The eventpoint has been disabled during
- inferior startup. This is necessary on
- some targets where the main executable
- will get relocated during startup, making
- breakpoint addresses invalid. The
- eventpoint will be automatically enabled
- and reset once inferior startup is
- complete. */
bp_permanent /* There is a breakpoint instruction
hard-wired into the target's code. Don't
try to write another breakpoint
};
+/* Status of breakpoint conditions used when synchronizing
+ conditions with the target. */
+
+enum condition_status
+ {
+ condition_unchanged = 0,
+ condition_modified,
+ condition_updated
+ };
+
/* Information used by targets to insert and remove breakpoints. */
struct bp_target_info
(e.g. if a remote stub handled the details). We may still need
the size to remove the breakpoint safely. */
int placed_size;
+
+ /* Vector of conditions the target should evaluate if it supports target-side
+ breakpoint conditions. */
+ VEC(agent_expr_p) *conditions;
};
/* GDB maintains two types of information about each breakpoint (or
the owner breakpoint object. */
struct expression *cond;
+ /* Conditional expression in agent expression
+ bytecode form. This is used for stub-side breakpoint
+ condition evaluation. */
+ struct agent_expr *cond_bytecode;
+
+ /* Signals that the condition has changed since the last time
+ we updated the global location list. This means the condition
+ needs to be sent to the target again. This is used together
+ with target-side breakpoint conditions.
+
+ condition_unchanged: It means there has been no condition changes.
+
+ condition_modified: It means this location had its condition modified.
+
+ condition_updated: It means we already marked all the locations that are
+ duplicates of this location and thus we don't need to call
+ force_breakpoint_reinsertion (...) for this location. */
+
+ 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. */
+ char needs_update;
+
/* This location's address is in an unloaded solib, and so this
location should not be inserted. It will be automatically
enabled when that solib is loaded. */
This variable keeps a number of events still to go, when
it becomes 0 this location is retired. */
int events_till_retirement;
+
+ /* Line number of this address. */
+
+ int line_number;
+
+ /* Source file name of this address. */
+
+ char *source_file;
};
/* This structure is a collection of function pointers that, if available,
/* Return true if it the target has stopped due to hitting
breakpoint location BL. This function does not check if we
- should stop, only if BL explains the stop. */
- int (*breakpoint_hit) (const struct bp_location *bl, struct address_space *,
- CORE_ADDR);
+ should stop, only if BL explains the stop. ASPACE is the address
+ space in which the event occurred, BP_ADDR is the address at
+ which the inferior stopped, and WS is the target_waitstatus
+ describing the event. */
+ int (*breakpoint_hit) (const struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR bp_addr,
+ const struct target_waitstatus *ws);
/* Check internal conditions of the breakpoint referred to by BS.
If we should not stop for this breakpoint, set BS->stop to 0. */
/* Print to FP the CLI command that recreates this breakpoint. */
void (*print_recreate) (struct breakpoint *, struct ui_file *fp);
+
+ /* Create SALs from address string, storing the result in linespec_result.
+
+ For an explanation about the arguments, see the function
+ `create_sals_from_address_default'.
+
+ This function is called inside `create_breakpoint'. */
+ void (*create_sals_from_address) (char **, struct linespec_result *,
+ enum bptype, char *, char **);
+
+ /* This method will be responsible for creating a breakpoint given its SALs.
+ Usually, it just calls `create_breakpoints_sal' (for ordinary
+ breakpoints). However, there may be some special cases where we might
+ need to do some tweaks, e.g., see
+ `strace_marker_create_breakpoints_sal'.
+
+ This function is called inside `create_breakpoint'. */
+ void (*create_breakpoints_sal) (struct gdbarch *,
+ struct linespec_result *,
+ struct linespec_sals *, char *,
+ enum bptype, enum bpdisp, int, int,
+ int, const struct breakpoint_ops *,
+ int, int, int, unsigned);
+
+ /* Given the address string (second parameter), this method decodes it
+ and provides the SAL locations related to it. For ordinary breakpoints,
+ it calls `decode_line_full'.
+
+ This function is called inside `addr_string_to_sals'. */
+ void (*decode_linespec) (struct breakpoint *, char **,
+ struct symtabs_and_lines *);
};
/* Helper for breakpoint_ops->print_recreate implementations. Prints
watch_triggered_yes
};
-/* This is used to declare the VEC syscalls_to_be_caught. */
-DEF_VEC_I(int);
-
typedef struct bp_location *bp_location_p;
DEF_VEC_P(bp_location_p);
/* Location(s) associated with this high-level breakpoint. */
struct bp_location *loc;
- /* Line number of this address. */
-
- int line_number;
-
- /* Source file name of this address. */
-
- 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;
+
+ /* Number of stops at this breakpoint before it will be
+ disabled. */
+ int enable_count;
+
/* Chain of command lines to execute when this breakpoint is
hit. */
struct counted_command_line *commands;
equals this. */
struct frame_id frame_id;
- /* The program space used to set the breakpoint. */
+ /* The program space used to set the breakpoint. This is only set
+ for breakpoints which are specific to a program space; for
+ non-thread-specific ordinary breakpoints this is NULL. */
struct program_space *pspace;
/* String we used to set the breakpoint (malloc'd). */
char *addr_string;
+ /* The filter that should be passed to decode_line_full when
+ re-setting this breakpoint. This may be NULL, but otherwise is
+ allocated with xmalloc. */
+ char *filter;
+
/* For a ranged breakpoint, the string we used to find
the end of the range (malloc'd). */
char *addr_string_range_end;
CORE_ADDR hw_wp_mask;
};
+/* Return true if BPT is either a software breakpoint or a hardware
+ breakpoint. */
+
+extern int is_breakpoint (const struct breakpoint *bpt);
+
/* Returns true if BPT is really a watchpoint. */
extern int is_watchpoint (const struct breakpoint *bpt);
extern bpstat bpstat_copy (bpstat);
extern bpstat bpstat_stop_status (struct address_space *aspace,
- CORE_ADDR pc, ptid_t ptid);
+ CORE_ADDR pc, ptid_t ptid,
+ const struct target_waitstatus *ws);
\f
/* This bpstat_what stuff tells wait_for_inferior what to do with a
breakpoint (a challenging task).
extern void install_breakpoint (int internal, struct breakpoint *b,
int update_gll);
+/* Flags that can be passed down to create_breakpoint, etc., to affect
+ breakpoint creation in several ways. */
+
+enum breakpoint_create_flags
+ {
+ /* We're adding a breakpoint to our tables that is already
+ inserted in the target. */
+ CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0
+ };
+
extern int create_breakpoint (struct gdbarch *gdbarch, char *arg,
char *cond_string, int thread,
int parse_condition_and_thread,
const struct breakpoint_ops *ops,
int from_tty,
int enabled,
- int internal);
+ int internal, unsigned flags);
extern void insert_breakpoints (void);
struct frame_id frame);
extern void delete_longjmp_breakpoint (int thread);
+/* Mark all longjmp breakpoints from THREAD for later deletion. */
+extern void delete_longjmp_breakpoint_at_next_stop (int thread);
+
extern void enable_overlay_breakpoints (void);
extern void disable_overlay_breakpoints (void);
target. */
int watchpoints_triggered (struct target_waitstatus *);
-/* Update BUF, which is LEN bytes read from the target address MEMADDR,
- by replacing any memory breakpoints with their shadowed contents. */
-void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr,
- LONGEST len);
+/* Helper for transparent breakpoint hiding for memory read and write
+ routines.
+
+ Update one of READBUF or WRITEBUF with either the shadows
+ (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
+ breakpoints at the memory range defined by MEMADDR and extending
+ for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
+ on entry.*/
+extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
+ const gdb_byte *writebuf_org,
+ ULONGEST memaddr, LONGEST len);
extern int breakpoints_always_inserted_mode (void);
have been inlined. */
extern int pc_at_non_inline_function (struct address_space *aspace,
- CORE_ADDR pc);
+ CORE_ADDR pc,
+ const struct target_waitstatus *ws);
extern int user_breakpoint_p (struct breakpoint *);
/* 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);
+
#endif /* !defined (BREAKPOINT_H) */