/* Everything about breakpoints, for GDB.
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
- Foundation, Inc.
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+ Free Software Foundation, Inc.
This file is part of GDB.
extern void tbreak_at_finish_command (char *, int);
-static void break_command_1 (char *, int, int);
+static int break_command_1 (char *, int, int, struct breakpoint *);
static void mention (struct breakpoint *);
static int get_number_trailer (char **, int);
+static int do_captured_parse_breakpoint (struct ui_out *, void *);
+
void set_breakpoint_count (int);
typedef enum
}
insertion_state_t;
-static int remove_breakpoint (struct breakpoint *, insertion_state_t);
+static int remove_breakpoint (struct bp_location *, insertion_state_t);
static enum print_stop_action print_it_typical (bpstat);
static char *ep_parse_optional_filename (char **arg);
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
-static void catch_exec_command_1 (char *arg, int tempflag, int from_tty);
-#endif
-
static void create_exception_catchpoint (int tempflag, char *cond_string,
enum exception_event_kind ex_event,
struct symtab_and_line *sal);
B ? (TMP=B->next, 1): 0; \
B = TMP)
-/* True if SHIFT_INST_REGS defined, false otherwise. */
+/* Similar iterators for the low-level breakpoints. */
-int must_shift_inst_regs =
-#if defined(SHIFT_INST_REGS)
-1
-#else
-0
-#endif
- ;
+#define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next)
+
+#define ALL_BP_LOCATIONS_SAFE(B,TMP) \
+ for (B = bp_location_chain; \
+ B ? (TMP=B->next, 1): 0; \
+ B = TMP)
/* True if breakpoint hit counts should be displayed in breakpoint info. */
int show_breakpoint_hit_counts = 1;
-/* Chain of all breakpoints defined. */
+/* Chains of all breakpoints defined. */
struct breakpoint *breakpoint_chain;
+struct bp_location *bp_location_chain;
+
/* Number of last breakpoint made. */
int breakpoint_count;
error ("catch of library unloads not yet implemented on this platform")
#endif
+/* Return whether a breakpoint is an active enabled breakpoint. */
+static int
+breakpoint_enabled (struct breakpoint *b)
+{
+ return (b->enable_state == bp_enabled && !b->pending);
+}
+
/* Set breakpoint count to NUM. */
void
/* I don't know if it matters whether this is the string the user
typed in or the decompiled expression. */
b->cond_string = savestring (arg, strlen (arg));
- b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0);
- if (*arg)
- error ("Junk at end of expression");
+ if (!b->pending)
+ {
+ b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0);
+ if (*arg)
+ error ("Junk at end of expression");
+ }
}
breakpoints_changed ();
breakpoint_modify_event (b->number);
read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len)
{
int status;
- struct breakpoint *b;
+ struct bp_location *b;
CORE_ADDR bp_addr = 0;
int bp_size = 0;
/* No breakpoints on this machine. */
return target_read_memory (memaddr, myaddr, len);
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->type == bp_none)
- warning ("reading through apparently deleted breakpoint #%d?",
- b->number);
+ if (b->owner->type == bp_none)
+ warning ("reading through apparently deleted breakpoint #%d?",
+ b->owner->number);
- /* memory breakpoint? */
- if (b->type == bp_watchpoint
- || b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint)
+ if (b->loc_type != bp_loc_software_breakpoint)
continue;
- /* bp in memory? */
- if (!b->loc->inserted)
+ if (!b->inserted)
continue;
/* Addresses and length of the part of the breakpoint that
we need to copy. */
breakpoint values. BREAKPOINT_FROM_PC still manages to
correctly determine the breakpoints memory address and size
for these targets. */
- bp_addr = b->loc->address;
+ bp_addr = b->address;
bp_size = 0;
if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
continue;
}
memcpy (myaddr + bp_addr - memaddr,
- b->loc->shadow_contents + bptoffset, bp_size);
+ b->shadow_contents + bptoffset, bp_size);
if (bp_addr > memaddr)
{
return 0;
}
-/* insert_breakpoints is used when starting or continuing the program.
- remove_breakpoints is used when the program stops.
- Both return zero if successful,
- or an `errno' value if could not write the inferior. */
+/* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
+ Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
+ PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems.
-int
-insert_breakpoints (void)
+ NOTE drow/2003-09-09: This routine could be broken down to an object-style
+ method for each breakpoint or catchpoint type. */
+static int
+insert_bp_location (struct bp_location *bpt,
+ struct ui_file *tmp_error_stream,
+ int *disabled_breaks, int *process_warning,
+ int *hw_breakpoint_error)
{
- struct breakpoint *b, *temp;
- int return_val = 0; /* return success code. */
int val = 0;
- int disabled_breaks = 0;
- int hw_breakpoint_error = 0;
-#ifdef ONE_PROCESS_WRITETEXT
- int process_warning = 0;
-#endif
- struct ui_file *tmp_error_stream = mem_fileopen ();
- make_cleanup_ui_file_delete (tmp_error_stream);
-
- /* Explicitly mark the warning -- this will only be printed if
- there was an error. */
- fprintf_unfiltered (tmp_error_stream, "Warning:\n");
+ /* Permanent breakpoints cannot be inserted or removed. Disabled
+ breakpoints should not be inserted. */
+ if (!breakpoint_enabled (bpt->owner))
+ return 0;
- ALL_BREAKPOINTS_SAFE (b, temp)
- {
- /* Permanent breakpoints cannot be inserted or removed. Disabled
- breakpoints should not be inserted. */
- if (b->enable_state != bp_enabled)
- continue;
+ if (bpt->inserted || bpt->duplicate)
+ return 0;
- if ((b->type == bp_watchpoint
- || b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint) && (!b->val))
- {
- struct value *val;
- val = evaluate_expression (b->exp);
- release_value (val);
- if (VALUE_LAZY (val))
- value_fetch_lazy (val);
- b->val = val;
- }
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_throw
- && b->type != bp_catch_catch
- && !b->loc->inserted
- && !b->loc->duplicate)
- {
- /* "Normal" instruction breakpoint: either the standard
- trap-instruction bp (bp_breakpoint), or a
- bp_hardware_breakpoint. */
-
- /* First check to see if we have to handle an overlay. */
- if (overlay_debugging == ovly_off
- || b->section == NULL
- || !(section_is_overlay (b->section)))
- {
- /* No overlay handling: just set the breakpoint. */
+ if (bpt->loc_type == bp_loc_software_breakpoint
+ || bpt->loc_type == bp_loc_hardware_breakpoint)
+ {
+ /* First check to see if we have to handle an overlay. */
+ if (overlay_debugging == ovly_off
+ || bpt->section == NULL
+ || !(section_is_overlay (bpt->section)))
+ {
+ /* No overlay handling: just set the breakpoint. */
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->loc->address,
- b->loc->shadow_contents);
- else
- val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents);
- }
- else
- {
- /* This breakpoint is in an overlay section.
- Shall we set a breakpoint at the LMA? */
- if (!overlay_events_enabled)
- {
- /* Yes -- overlay event support is not active,
- so we must try to set a breakpoint at the LMA.
- This will not work for a hardware breakpoint. */
- if (b->type == bp_hardware_breakpoint)
- warning ("hardware breakpoint %d not supported in overlay!\n",
- b->number);
- else
- {
- CORE_ADDR addr = overlay_unmapped_address (b->loc->address,
- b->section);
- /* Set a software (trap) breakpoint at the LMA. */
- val = target_insert_breakpoint (addr, b->loc->shadow_contents);
- if (val != 0)
- fprintf_unfiltered (tmp_error_stream,
- "Overlay breakpoint %d failed: in ROM?",
- b->number);
- }
- }
- /* Shall we set a breakpoint at the VMA? */
- if (section_is_mapped (b->section))
- {
- /* Yes. This overlay section is mapped into memory. */
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->loc->address,
- b->loc->shadow_contents);
- else
- val = target_insert_breakpoint (b->loc->address,
- b->loc->shadow_contents);
- }
- else
- {
- /* No. This breakpoint will not be inserted.
- No error, but do not mark the bp as 'inserted'. */
- continue;
- }
- }
+ if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (bpt->address,
+ bpt->shadow_contents);
+ else
+ val = target_insert_breakpoint (bpt->address,
+ bpt->shadow_contents);
+ }
+ else
+ {
+ /* This breakpoint is in an overlay section.
+ Shall we set a breakpoint at the LMA? */
+ if (!overlay_events_enabled)
+ {
+ /* Yes -- overlay event support is not active,
+ so we must try to set a breakpoint at the LMA.
+ This will not work for a hardware breakpoint. */
+ if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ warning ("hardware breakpoint %d not supported in overlay!\n",
+ bpt->owner->number);
+ else
+ {
+ CORE_ADDR addr = overlay_unmapped_address (bpt->address,
+ bpt->section);
+ /* Set a software (trap) breakpoint at the LMA. */
+ val = target_insert_breakpoint (addr, bpt->shadow_contents);
+ if (val != 0)
+ fprintf_unfiltered (tmp_error_stream,
+ "Overlay breakpoint %d failed: in ROM?",
+ bpt->owner->number);
+ }
+ }
+ /* Shall we set a breakpoint at the VMA? */
+ if (section_is_mapped (bpt->section))
+ {
+ /* Yes. This overlay section is mapped into memory. */
+ if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (bpt->address,
+ bpt->shadow_contents);
+ else
+ val = target_insert_breakpoint (bpt->address,
+ bpt->shadow_contents);
+ }
+ else
+ {
+ /* No. This breakpoint will not be inserted.
+ No error, but do not mark the bp as 'inserted'. */
+ return 0;
+ }
+ }
- if (val)
- {
- /* Can't set the breakpoint. */
+ if (val)
+ {
+ /* Can't set the breakpoint. */
#if defined (DISABLE_UNSETTABLE_BREAK)
- if (DISABLE_UNSETTABLE_BREAK (b->loc->address))
- {
- /* See also: disable_breakpoints_in_shlibs. */
- val = 0;
- b->enable_state = bp_shlib_disabled;
- if (!disabled_breaks)
- {
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert breakpoint %d.\n",
- b->number);
- fprintf_unfiltered (tmp_error_stream,
- "Temporarily disabling shared library breakpoints:\n");
- }
- disabled_breaks = 1;
- fprintf_unfiltered (tmp_error_stream,
- "breakpoint #%d\n", b->number);
- }
- else
+ if (DISABLE_UNSETTABLE_BREAK (bpt->address))
+ {
+ /* See also: disable_breakpoints_in_shlibs. */
+ val = 0;
+ bpt->owner->enable_state = bp_shlib_disabled;
+ if (!*disabled_breaks)
+ {
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert breakpoint %d.\n",
+ bpt->owner->number);
+ fprintf_unfiltered (tmp_error_stream,
+ "Temporarily disabling shared library breakpoints:\n");
+ }
+ *disabled_breaks = 1;
+ fprintf_unfiltered (tmp_error_stream,
+ "breakpoint #%d\n", bpt->owner->number);
+ }
+ else
#endif
- {
+ {
#ifdef ONE_PROCESS_WRITETEXT
- process_warning = 1;
+ *process_warning = 1;
#endif
- if (b->type == bp_hardware_breakpoint)
- {
- hw_breakpoint_error = 1;
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert hardware breakpoint %d.\n",
- b->number);
- }
- else
- {
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert breakpoint %d.\n",
- b->number);
- fprintf_filtered (tmp_error_stream,
- "Error accessing memory address ");
- print_address_numeric (b->loc->address, 1, tmp_error_stream);
- fprintf_filtered (tmp_error_stream, ": %s.\n",
- safe_strerror (val));
- }
+ if (bpt->loc_type == bp_loc_hardware_breakpoint)
+ {
+ *hw_breakpoint_error = 1;
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert hardware breakpoint %d.\n",
+ bpt->owner->number);
+ }
+ else
+ {
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert breakpoint %d.\n",
+ bpt->owner->number);
+ fprintf_filtered (tmp_error_stream,
+ "Error accessing memory address ");
+ print_address_numeric (bpt->address, 1, tmp_error_stream);
+ fprintf_filtered (tmp_error_stream, ": %s.\n",
+ safe_strerror (val));
+ }
- }
- }
- else
- b->loc->inserted = 1;
+ }
+ }
+ else
+ bpt->inserted = 1;
- if (val)
- return_val = val; /* remember failure */
- }
- else if (ep_is_exception_catchpoint (b)
- && !b->loc->inserted
- && !b->loc->duplicate)
+ return val;
+ }
- {
- /* If we get here, we must have a callback mechanism for exception
- events -- with g++ style embedded label support, we insert
- ordinary breakpoints and not catchpoints. */
- val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents);
- if (val)
- {
- /* Couldn't set breakpoint for some reason */
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert catchpoint %d; disabling it.\n",
- b->number);
- fprintf_filtered (tmp_error_stream,
- "Error accessing memory address ");
- print_address_numeric (b->loc->address, 1, tmp_error_stream);
- fprintf_filtered (tmp_error_stream, ": %s.\n",
- safe_strerror (val));
- b->enable_state = bp_disabled;
- }
- else
- {
- /* Bp set, now make sure callbacks are enabled */
- /* Format possible error msg */
- char *message = xstrprintf ("Error inserting catchpoint %d:\n",
- b->number);
- struct cleanup *cleanups = make_cleanup (xfree, message);
- int val;
- args_for_catchpoint_enable args;
- args.kind = b->type == bp_catch_catch ?
- EX_EVENT_CATCH : EX_EVENT_THROW;
- args.enable_p = 1;
- val = catch_errors (cover_target_enable_exception_callback,
- &args, message, RETURN_MASK_ALL);
- do_cleanups (cleanups);
- if (val != 0 && val != -1)
- {
- b->loc->inserted = 1;
- }
- /* Check if something went wrong; val == 0 can be ignored */
- if (val == -1)
- {
- /* something went wrong */
- fprintf_unfiltered (tmp_error_stream,
- "Cannot insert catchpoint %d; disabling it.\n",
- b->number);
- b->enable_state = bp_disabled;
- }
- }
+ else if (bpt->loc_type == bp_loc_hardware_watchpoint
+ /* NOTE drow/2003-09-08: This state only exists for removing
+ watchpoints. It's not clear that it's necessary... */
+ && bpt->owner->disposition != disp_del_at_next_stop)
+ {
+ /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints
+ based on the expression. Ideally this should happen at a higher level,
+ and there should be one bp_location for each computed address we
+ must watch. As soon as a many-to-one mapping is available I'll
+ convert this. */
- if (val)
- return_val = val; /* remember failure */
- }
+ struct frame_info *saved_frame;
+ int saved_level, within_current_scope;
+ struct value *mark = value_mark ();
+ struct value *v;
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->disposition != disp_del_at_next_stop
- && !b->loc->inserted
- && !b->loc->duplicate)
- {
- struct frame_info *saved_frame;
- int saved_level, within_current_scope;
- struct value *mark = value_mark ();
- struct value *v;
+ /* Save the current frame and level so we can restore it after
+ evaluating the watchpoint expression on its own frame. */
+ /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
+ took a frame parameter, so that we didn't have to change the
+ selected frame. */
+ saved_frame = deprecated_selected_frame;
+ saved_level = frame_relative_level (deprecated_selected_frame);
+
+ /* Determine if the watchpoint is within scope. */
+ if (bpt->owner->exp_valid_block == NULL)
+ within_current_scope = 1;
+ else
+ {
+ struct frame_info *fi;
+ fi = frame_find_by_id (bpt->owner->watchpoint_frame);
+ within_current_scope = (fi != NULL);
+ if (within_current_scope)
+ select_frame (fi);
+ }
- /* Save the current frame and level so we can restore it after
- evaluating the watchpoint expression on its own frame. */
- saved_frame = deprecated_selected_frame;
- saved_level = frame_relative_level (deprecated_selected_frame);
+ if (within_current_scope)
+ {
+ /* Evaluate the expression and cut the chain of values
+ produced off from the value chain.
- /* Determine if the watchpoint is within scope. */
- if (b->exp_valid_block == NULL)
- within_current_scope = 1;
- else
- {
- struct frame_info *fi;
- fi = frame_find_by_id (b->watchpoint_frame);
- within_current_scope = (fi != NULL);
- if (within_current_scope)
- select_frame (fi);
- }
+ Make sure the value returned isn't lazy; we use
+ laziness to determine what memory GDB actually needed
+ in order to compute the value of the expression. */
+ v = evaluate_expression (bpt->owner->exp);
+ VALUE_CONTENTS (v);
+ value_release_to_mark (mark);
- if (within_current_scope)
- {
- /* Evaluate the expression and cut the chain of values
- produced off from the value chain.
+ bpt->owner->val_chain = v;
+ bpt->inserted = 1;
- Make sure the value returned isn't lazy; we use
- laziness to determine what memory GDB actually needed
- in order to compute the value of the expression. */
- v = evaluate_expression (b->exp);
- VALUE_CONTENTS(v);
- value_release_to_mark (mark);
+ /* Look at each value on the value chain. */
+ for (; v; v = v->next)
+ {
+ /* If it's a memory location, and GDB actually needed
+ its contents to evaluate the expression, then we
+ must watch it. */
+ if (VALUE_LVAL (v) == lval_memory
+ && ! VALUE_LAZY (v))
+ {
+ struct type *vtype = check_typedef (VALUE_TYPE (v));
+
+ /* We only watch structs and arrays if user asked
+ for it explicitly, never if they just happen to
+ appear in the middle of some value chain. */
+ if (v == bpt->owner->val_chain
+ || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
+ && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
+ {
+ CORE_ADDR addr;
+ int len, type;
+
+ addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ len = TYPE_LENGTH (VALUE_TYPE (v));
+ type = hw_write;
+ if (bpt->owner->type == bp_read_watchpoint)
+ type = hw_read;
+ else if (bpt->owner->type == bp_access_watchpoint)
+ type = hw_access;
+
+ val = target_insert_watchpoint (addr, len, type);
+ if (val == -1)
+ {
+ /* Don't exit the loop, try to insert
+ every value on the value chain. That's
+ because we will be removing all the
+ watches below, and removing a
+ watchpoint we didn't insert could have
+ adverse effects. */
+ bpt->inserted = 0;
+ }
+ val = 0;
+ }
+ }
+ }
+ /* Failure to insert a watchpoint on any memory value in the
+ value chain brings us here. */
+ if (!bpt->inserted)
+ {
+ remove_breakpoint (bpt, mark_uninserted);
+ *hw_breakpoint_error = 1;
+ fprintf_unfiltered (tmp_error_stream,
+ "Could not insert hardware watchpoint %d.\n",
+ bpt->owner->number);
+ val = -1;
+ }
+ }
+ else
+ {
+ printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number);
+ printf_filtered ("because the program has left the block \n");
+ printf_filtered ("in which its expression is valid.\n");
+ if (bpt->owner->related_breakpoint)
+ bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop;
+ bpt->owner->disposition = disp_del_at_next_stop;
+ }
- b->val_chain = v;
- b->loc->inserted = 1;
+ /* Restore the frame and level. */
+ if (saved_frame != deprecated_selected_frame
+ || saved_level != frame_relative_level (deprecated_selected_frame))
+ select_frame (saved_frame);
- /* Look at each value on the value chain. */
- for (; v; v = v->next)
- {
- /* If it's a memory location, and GDB actually needed
- its contents to evaluate the expression, then we
- must watch it. */
- if (VALUE_LVAL (v) == lval_memory
- && ! VALUE_LAZY (v))
- {
- struct type *vtype = check_typedef (VALUE_TYPE (v));
-
- /* We only watch structs and arrays if user asked
- for it explicitly, never if they just happen to
- appear in the middle of some value chain. */
- if (v == b->val_chain
- || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
- && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
- {
- CORE_ADDR addr;
- int len, type;
-
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
- type = hw_write;
- if (b->type == bp_read_watchpoint)
- type = hw_read;
- else if (b->type == bp_access_watchpoint)
- type = hw_access;
-
- val = target_insert_watchpoint (addr, len, type);
- if (val == -1)
- {
- /* Don't exit the loop, try to insert
- every value on the value chain. That's
- because we will be removing all the
- watches below, and removing a
- watchpoint we didn't insert could have
- adverse effects. */
- b->loc->inserted = 0;
- }
- val = 0;
- }
- }
- }
- /* Failure to insert a watchpoint on any memory value in the
- value chain brings us here. */
- if (!b->loc->inserted)
- {
- remove_breakpoint (b, mark_uninserted);
- hw_breakpoint_error = 1;
- fprintf_unfiltered (tmp_error_stream,
- "Could not insert hardware watchpoint %d.\n",
- b->number);
- val = -1;
- }
- }
- else
- {
- printf_filtered ("Hardware watchpoint %d deleted ", b->number);
- printf_filtered ("because the program has left the block \n");
- printf_filtered ("in which its expression is valid.\n");
- if (b->related_breakpoint)
- b->related_breakpoint->disposition = disp_del_at_next_stop;
- b->disposition = disp_del_at_next_stop;
- }
+ return val;
+ }
- /* Restore the frame and level. */
- if ((saved_frame != deprecated_selected_frame) ||
- (saved_level != frame_relative_level (deprecated_selected_frame)))
- select_frame (saved_frame);
+ else if (ep_is_exception_catchpoint (bpt->owner))
+ {
+ /* FIXME drow/2003-09-09: This code sets both a catchpoint and a
+ breakpoint. Once again, it would be better if this was represented
+ as two bp_locations. */
- if (val)
- return_val = val; /* remember failure */
- }
- else if ((b->type == bp_catch_fork
- || b->type == bp_catch_vfork
- || b->type == bp_catch_exec)
- && !b->loc->inserted
- && !b->loc->duplicate)
- {
- char *prefix = xstrprintf ("warning: inserting catchpoint %d: ",
- b->number);
- struct cleanup *cleanups = make_cleanup (xfree, prefix);
- val = catch_exceptions (uiout, insert_catchpoint, b, prefix,
- RETURN_MASK_ERROR);
- do_cleanups (cleanups);
- if (val < 0)
- b->enable_state = bp_disabled;
- else
- b->loc->inserted = 1;
- }
- }
-
- if (return_val)
+ /* If we get here, we must have a callback mechanism for exception
+ events -- with g++ style embedded label support, we insert
+ ordinary breakpoints and not catchpoints. */
+ val = target_insert_breakpoint (bpt->address, bpt->shadow_contents);
+ if (val)
+ {
+ /* Couldn't set breakpoint for some reason */
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert catchpoint %d; disabling it.\n",
+ bpt->owner->number);
+ fprintf_filtered (tmp_error_stream,
+ "Error accessing memory address ");
+ print_address_numeric (bpt->address, 1, tmp_error_stream);
+ fprintf_filtered (tmp_error_stream, ": %s.\n",
+ safe_strerror (val));
+ bpt->owner->enable_state = bp_disabled;
+ }
+ else
+ {
+ /* Bp set, now make sure callbacks are enabled */
+ /* Format possible error msg */
+ char *message = xstrprintf ("Error inserting catchpoint %d:\n",
+ bpt->owner->number);
+ struct cleanup *cleanups = make_cleanup (xfree, message);
+ int val;
+ args_for_catchpoint_enable args;
+ args.kind = bpt->owner->type == bp_catch_catch ?
+ EX_EVENT_CATCH : EX_EVENT_THROW;
+ args.enable_p = 1;
+ val = catch_errors (cover_target_enable_exception_callback,
+ &args, message, RETURN_MASK_ALL);
+ do_cleanups (cleanups);
+ if (val != 0 && val != -1)
+ bpt->inserted = 1;
+
+ /* Check if something went wrong; val == 0 can be ignored */
+ if (val == -1)
+ {
+ /* something went wrong */
+ fprintf_unfiltered (tmp_error_stream,
+ "Cannot insert catchpoint %d; disabling it.\n",
+ bpt->owner->number);
+ bpt->owner->enable_state = bp_disabled;
+ }
+ }
+
+ return val;
+ }
+
+ else if (bpt->owner->type == bp_catch_fork
+ || bpt->owner->type == bp_catch_vfork
+ || bpt->owner->type == bp_catch_exec)
+ {
+ char *prefix = xstrprintf ("warning: inserting catchpoint %d: ",
+ bpt->owner->number);
+ struct cleanup *cleanups = make_cleanup (xfree, prefix);
+ val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix,
+ RETURN_MASK_ERROR);
+ do_cleanups (cleanups);
+ if (val < 0)
+ bpt->owner->enable_state = bp_disabled;
+ else
+ bpt->inserted = 1;
+
+ /* We've already printed an error message if there was a problem
+ inserting this catchpoint, and we've disabled the catchpoint,
+ so just return success. */
+ return 0;
+ }
+
+ return 0;
+}
+
+/* insert_breakpoints is used when starting or continuing the program.
+ remove_breakpoints is used when the program stops.
+ Both return zero if successful,
+ or an `errno' value if could not write the inferior. */
+
+int
+insert_breakpoints (void)
+{
+ struct bp_location *b, *temp;
+ int return_val = 0; /* return success code. */
+ int val = 0;
+ int disabled_breaks = 0;
+ int hw_breakpoint_error = 0;
+ int process_warning = 0;
+
+ struct ui_file *tmp_error_stream = mem_fileopen ();
+ make_cleanup_ui_file_delete (tmp_error_stream);
+
+ /* Explicitly mark the warning -- this will only be printed if
+ there was an error. */
+ fprintf_unfiltered (tmp_error_stream, "Warning:\n");
+
+ ALL_BP_LOCATIONS_SAFE (b, temp)
+ {
+ /* Permanent breakpoints cannot be inserted or removed. Disabled
+ breakpoints should not be inserted. */
+ if (!breakpoint_enabled (b->owner))
+ continue;
+
+ /* FIXME drow/2003-10-07: This code should be pushed elsewhere when
+ hardware watchpoints are split into multiple loc breakpoints. */
+ if ((b->loc_type == bp_loc_hardware_watchpoint
+ || b->owner->type == bp_watchpoint) && !b->owner->val)
+ {
+ struct value *val;
+ val = evaluate_expression (b->owner->exp);
+ release_value (val);
+ if (VALUE_LAZY (val))
+ value_fetch_lazy (val);
+ b->owner->val = val;
+ }
+
+ val = insert_bp_location (b, tmp_error_stream,
+ &disabled_breaks, &process_warning,
+ &hw_breakpoint_error);
+ if (val)
+ return_val = val;
+ }
+
+ if (return_val)
{
/* If a hardware breakpoint or watchpoint was inserted, add a
message about possibly exhausted resources. */
- if (hw_breakpoint_error)
+ if (hw_breakpoint_error)
{
fprintf_unfiltered (tmp_error_stream,
"Could not insert hardware breakpoints:\n\
int
remove_breakpoints (void)
{
- struct breakpoint *b;
+ struct bp_location *b;
int val;
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->loc->inserted)
+ if (b->inserted)
{
val = remove_breakpoint (b, mark_uninserted);
if (val != 0)
int
remove_hw_watchpoints (void)
{
- struct breakpoint *b;
+ struct bp_location *b;
int val;
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->loc->inserted
- && (b->type == bp_hardware_watchpoint
- || b->type == bp_read_watchpoint
- || b->type == bp_access_watchpoint))
+ if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint)
{
val = remove_breakpoint (b, mark_uninserted);
if (val != 0)
int
reattach_breakpoints (int pid)
{
- struct breakpoint *b;
+ struct bp_location *b;
int val;
struct cleanup *old_chain = save_inferior_ptid ();
/* Set inferior_ptid; remove_breakpoint uses this global. */
inferior_ptid = pid_to_ptid (pid);
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->loc->inserted)
+ if (b->inserted)
{
remove_breakpoint (b, mark_inserted);
- if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents);
+ if (b->loc_type == bp_loc_hardware_breakpoint)
+ val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
else
- val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_insert_breakpoint (b->address, b->shadow_contents);
+ /* FIXME drow/2003-10-07: This doesn't handle any other kinds of
+ breakpoints. It's wrong for watchpoints, for example. */
if (val != 0)
{
do_cleanups (old_chain);
int
detach_breakpoints (int pid)
{
- struct breakpoint *b;
+ struct bp_location *b;
int val;
struct cleanup *old_chain = save_inferior_ptid ();
/* Set inferior_ptid; remove_breakpoint uses this global. */
inferior_ptid = pid_to_ptid (pid);
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->loc->inserted)
+ if (b->inserted)
{
val = remove_breakpoint (b, mark_inserted);
if (val != 0)
}
static int
-remove_breakpoint (struct breakpoint *b, insertion_state_t is)
+remove_breakpoint (struct bp_location *b, insertion_state_t is)
{
int val;
- if (b->enable_state == bp_permanent)
+ if (b->owner->enable_state == bp_permanent)
/* Permanent breakpoints cannot be inserted or removed. */
return 0;
- if (b->type == bp_none)
+ if (b->owner->type == bp_none)
warning ("attempted to remove apparently deleted breakpoint #%d?",
- b->number);
-
- if (b->type != bp_watchpoint
- && b->type != bp_hardware_watchpoint
- && b->type != bp_read_watchpoint
- && b->type != bp_access_watchpoint
- && b->type != bp_catch_fork
- && b->type != bp_catch_vfork
- && b->type != bp_catch_exec
- && b->type != bp_catch_catch
- && b->type != bp_catch_throw)
+ b->owner->number);
+
+ if (b->loc_type == bp_loc_software_breakpoint
+ || b->loc_type == bp_loc_hardware_breakpoint)
{
/* "Normal" instruction breakpoint: either the standard
trap-instruction bp (bp_breakpoint), or a
{
/* No overlay handling: just remove the breakpoint. */
- if (b->type == bp_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->loc->address,
- b->loc->shadow_contents);
+ if (b->loc_type == bp_loc_hardware_breakpoint)
+ val = target_remove_hw_breakpoint (b->address,
+ b->shadow_contents);
else
- val = target_remove_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
}
else
{
/* Yes -- overlay event support is not active, so we
should have set a breakpoint at the LMA. Remove it.
*/
- CORE_ADDR addr = overlay_unmapped_address (b->loc->address,
+ CORE_ADDR addr = overlay_unmapped_address (b->address,
b->section);
/* Ignore any failures: if the LMA is in ROM, we will
have already warned when we failed to insert it. */
- if (b->type != bp_hardware_breakpoint)
- target_remove_hw_breakpoint (addr, b->loc->shadow_contents);
+ if (b->loc_type == bp_loc_hardware_breakpoint)
+ target_remove_hw_breakpoint (addr, b->shadow_contents);
else
- target_remove_breakpoint (addr, b->loc->shadow_contents);
+ target_remove_breakpoint (addr, b->shadow_contents);
}
/* Did we set a breakpoint at the VMA?
If so, we will have marked the breakpoint 'inserted'. */
- if (b->loc->inserted)
+ if (b->inserted)
{
/* Yes -- remove it. Previously we did not bother to
remove the breakpoint if the section had been
unmapped, but let's not rely on that being safe. We
don't know what the overlay manager might do. */
- if (b->type == bp_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->loc->address,
- b->loc->shadow_contents);
+ if (b->loc_type == bp_loc_hardware_breakpoint)
+ val = target_remove_hw_breakpoint (b->address,
+ b->shadow_contents);
else
- val = target_remove_breakpoint (b->loc->address,
- b->loc->shadow_contents);
+ val = target_remove_breakpoint (b->address,
+ b->shadow_contents);
}
else
{
}
if (val)
return val;
- b->loc->inserted = (is == mark_inserted);
+ b->inserted = (is == mark_inserted);
}
- else if ((b->type == bp_hardware_watchpoint ||
- b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable_state == bp_enabled
- && !b->loc->duplicate)
+ else if (b->loc_type == bp_loc_hardware_watchpoint
+ && breakpoint_enabled (b->owner)
+ && !b->duplicate)
{
struct value *v;
struct value *n;
- b->loc->inserted = (is == mark_inserted);
+ b->inserted = (is == mark_inserted);
/* Walk down the saved value chain. */
- for (v = b->val_chain; v; v = v->next)
+ for (v = b->owner->val_chain; v; v = v->next)
{
/* For each memory reference remove the watchpoint
at that address. */
{
struct type *vtype = check_typedef (VALUE_TYPE (v));
- if (v == b->val_chain
+ if (v == b->owner->val_chain
|| (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
&& TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
{
addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
len = TYPE_LENGTH (VALUE_TYPE (v));
type = hw_write;
- if (b->type == bp_read_watchpoint)
+ if (b->owner->type == bp_read_watchpoint)
type = hw_read;
- else if (b->type == bp_access_watchpoint)
+ else if (b->owner->type == bp_access_watchpoint)
type = hw_access;
val = target_remove_watchpoint (addr, len, type);
if (val == -1)
- b->loc->inserted = 1;
+ b->inserted = 1;
val = 0;
}
}
}
/* Failure to remove any of the hardware watchpoints comes here. */
- if ((is == mark_uninserted) && (b->loc->inserted))
+ if ((is == mark_uninserted) && (b->inserted))
warning ("Could not remove hardware watchpoint %d.",
- b->number);
+ b->owner->number);
/* Free the saved value chain. We will construct a new one
the next time the watchpoint is inserted. */
- for (v = b->val_chain; v; v = n)
+ for (v = b->owner->val_chain; v; v = n)
{
n = v->next;
value_free (v);
}
- b->val_chain = NULL;
+ b->owner->val_chain = NULL;
}
- else if ((b->type == bp_catch_fork ||
- b->type == bp_catch_vfork ||
- b->type == bp_catch_exec)
- && b->enable_state == bp_enabled
- && !b->loc->duplicate)
+ else if ((b->owner->type == bp_catch_fork ||
+ b->owner->type == bp_catch_vfork ||
+ b->owner->type == bp_catch_exec)
+ && breakpoint_enabled (b->owner)
+ && !b->duplicate)
{
val = -1;
- switch (b->type)
+ switch (b->owner->type)
{
case bp_catch_fork:
val = target_remove_fork_catchpoint (PIDGET (inferior_ptid));
}
if (val)
return val;
- b->loc->inserted = (is == mark_inserted);
+ b->inserted = (is == mark_inserted);
}
- else if ((b->type == bp_catch_catch ||
- b->type == bp_catch_throw)
- && b->enable_state == bp_enabled
- && !b->loc->duplicate)
+ else if ((b->owner->type == bp_catch_catch ||
+ b->owner->type == bp_catch_throw)
+ && breakpoint_enabled (b->owner)
+ && !b->duplicate)
{
- val = target_remove_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
if (val)
return val;
- b->loc->inserted = (is == mark_inserted);
+ b->inserted = (is == mark_inserted);
}
- else if (ep_is_exception_catchpoint (b)
- && b->loc->inserted /* sometimes previous insert doesn't happen */
- && b->enable_state == bp_enabled
- && !b->loc->duplicate)
+ else if (ep_is_exception_catchpoint (b->owner)
+ && b->inserted /* sometimes previous insert doesn't happen */
+ && breakpoint_enabled (b->owner)
+ && !b->duplicate)
{
- val = target_remove_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_remove_breakpoint (b->address, b->shadow_contents);
if (val)
return val;
- b->loc->inserted = (is == mark_inserted);
+ b->inserted = (is == mark_inserted);
}
return 0;
void
mark_breakpoints_out (void)
{
- struct breakpoint *b;
+ struct bp_location *bpt;
- ALL_BREAKPOINTS (b)
- b->loc->inserted = 0;
+ ALL_BP_LOCATIONS (bpt)
+ bpt->inserted = 0;
}
/* Clear the "inserted" flag in all breakpoints and delete any
breakpoint_init_inferior (enum inf_context context)
{
struct breakpoint *b, *temp;
+ struct bp_location *bpt;
static int warning_needed = 0;
+ ALL_BP_LOCATIONS (bpt)
+ bpt->inserted = 0;
+
ALL_BREAKPOINTS_SAFE (b, temp)
{
- b->loc->inserted = 0;
-
switch (b->type)
{
case bp_call_dummy:
enum breakpoint_here
breakpoint_here_p (CORE_ADDR pc)
{
- struct breakpoint *b;
+ struct bp_location *bpt;
int any_breakpoint_here = 0;
- ALL_BREAKPOINTS (b)
- if ((b->enable_state == bp_enabled
- || b->enable_state == bp_permanent)
- && b->loc->address == pc) /* bp is enabled and matches pc */
- {
- if (overlay_debugging
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else if (b->enable_state == bp_permanent)
- return permanent_breakpoint_here;
- else
- any_breakpoint_here = 1;
- }
+ ALL_BP_LOCATIONS (bpt)
+ {
+ if (bpt->loc_type != bp_loc_software_breakpoint
+ && bpt->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+
+ if ((breakpoint_enabled (bpt->owner)
+ || bpt->owner->enable_state == bp_permanent)
+ && bpt->address == pc) /* bp is enabled and matches pc */
+ {
+ if (overlay_debugging
+ && section_is_overlay (bpt->section)
+ && !section_is_mapped (bpt->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else if (bpt->owner->enable_state == bp_permanent)
+ return permanent_breakpoint_here;
+ else
+ any_breakpoint_here = 1;
+ }
+ }
return any_breakpoint_here ? ordinary_breakpoint_here : 0;
}
int
breakpoint_inserted_here_p (CORE_ADDR pc)
{
- struct breakpoint *b;
+ struct bp_location *bpt;
- ALL_BREAKPOINTS (b)
- if (b->loc->inserted
- && b->loc->address == pc) /* bp is inserted and matches pc */
+ ALL_BP_LOCATIONS (bpt)
{
- if (overlay_debugging
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
+ if (bpt->loc_type != bp_loc_software_breakpoint
+ && bpt->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+
+ if (bpt->inserted
+ && bpt->address == pc) /* bp is inserted and matches pc */
+ {
+ if (overlay_debugging
+ && section_is_overlay (bpt->section)
+ && !section_is_mapped (bpt->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/* This function returns non-zero iff there is a software breakpoint
+ inserted at PC. */
+
+int
+software_breakpoint_inserted_here_p (CORE_ADDR pc)
+{
+ struct bp_location *bpt;
+ int any_breakpoint_here = 0;
+
+ ALL_BP_LOCATIONS (bpt)
+ {
+ if (bpt->loc_type != bp_loc_software_breakpoint)
+ continue;
+
+ if ((breakpoint_enabled (bpt->owner)
+ || bpt->owner->enable_state == bp_permanent)
+ && bpt->inserted
+ && bpt->address == pc) /* bp is enabled and matches pc */
+ {
+ if (overlay_debugging
+ && section_is_overlay (bpt->section)
+ && !section_is_mapped (bpt->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
}
return 0;
return 0;
}
-/* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
- PC is valid for process/thread PID. */
+/* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
+ PC is valid for process/thread PTID. */
int
breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid)
{
- struct breakpoint *b;
+ struct bp_location *bpt;
int thread;
thread = pid_to_thread_id (ptid);
- ALL_BREAKPOINTS (b)
- if (b->enable_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && b->loc->address == pc
- && (b->thread == -1 || b->thread == thread))
- {
- if (overlay_debugging
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
+ ALL_BP_LOCATIONS (bpt)
+ {
+ if (bpt->loc_type != bp_loc_software_breakpoint
+ && bpt->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+
+ if ((breakpoint_enabled (bpt->owner)
+ || bpt->owner->enable_state == bp_permanent)
+ && bpt->address == pc
+ && (bpt->owner->thread == -1 || bpt->owner->thread == thread))
+ {
+ if (overlay_debugging
+ && section_is_overlay (bpt->section)
+ && !section_is_mapped (bpt->section))
+ continue; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
+ }
}
return 0;
{
bpstat bs;
struct cleanup *old_chain;
- struct command_line *cmd;
/* Avoid endless recursion if a `source' command is contained
in bs->commands. */
breakpoint_proceeded = 0;
for (; bs != NULL; bs = bs->next)
{
+ struct command_line *cmd;
+ struct cleanup *this_cmd_tree_chain;
+
+ /* Take ownership of the BSP's command tree, if it has one.
+
+ The command tree could legitimately contain commands like
+ 'step' and 'next', which call clear_proceed_status, which
+ frees stop_bpstat's command tree. To make sure this doesn't
+ free the tree we're executing out from under us, we need to
+ take ownership of the tree ourselves. Since a given bpstat's
+ commands are only executed once, we don't need to copy it; we
+ can clear the pointer in the bpstat, and make sure we free
+ the tree when we're done. */
cmd = bs->commands;
+ bs->commands = 0;
+ this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd);
+
while (cmd != NULL)
{
execute_control_command (cmd);
else
cmd = cmd->next;
}
+
+ /* We can free this command tree now. */
+ do_cleanups (this_cmd_tree_chain);
+
if (breakpoint_proceeded)
/* The inferior is proceeded by the command; bomb out now.
The bpstat chain has been blown away by wait_for_inferior.
But since execution has stopped again, there is a new bpstat
to look at, so start over. */
goto top;
- else
- free_command_lines (&bs->commands);
}
do_cleanups (old_chain);
}
struct breakpoint *b;
struct frame_info *fr;
int within_current_scope;
-#if 0
- struct frame_id current_frame_id;
-#endif
b = bs->breakpoint_at;
}
}
-/* Get a bpstat associated with having just stopped at address *PC
- and frame address CORE_ADDRESS. Update *PC to point at the
- breakpoint (if we hit a breakpoint). NOT_A_SW_BREAKPOINT is nonzero
- if this is known to not be a real breakpoint (it could still be a
- watchpoint, though). */
+/* Get a bpstat associated with having just stopped at address
+ BP_ADDR. */
/* Determine whether we stopped at a breakpoint, etc, or whether we
don't understand this stop. Result is a chain of bpstat's such that:
commands, FIXME??? fields. */
bpstat
-bpstat_stop_status (CORE_ADDR *pc, int not_a_sw_breakpoint)
+bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid)
{
struct breakpoint *b, *temp;
- CORE_ADDR bp_addr;
/* True if we've hit a breakpoint (as opposed to a watchpoint). */
int real_breakpoint = 0;
/* Root of the chain of bpstat's */
struct bpstats root_bs[1];
/* Pointer to the last thing in the chain currently. */
bpstat bs = root_bs;
-
- /* Get the address where the breakpoint would have been. The
- "not_a_sw_breakpoint" argument is meant to distinguish between a
- breakpoint trap event and a trace/singlestep trap event. For a
- trace/singlestep trap event, we would not want to subtract
- DECR_PC_AFTER_BREAK from the PC. */
-
- bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK);
+ int thread_id = pid_to_thread_id (ptid);
ALL_BREAKPOINTS_SAFE (b, temp)
{
- if (b->enable_state == bp_disabled
- || b->enable_state == bp_shlib_disabled
- || b->enable_state == bp_call_disabled)
+ if (!breakpoint_enabled (b) && b->enable_state != bp_permanent)
continue;
if (b->type != bp_watchpoint
if (b->loc->address != bp_addr) /* address doesn't match */
continue;
if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
+ && section_is_overlay (b->loc->section)
+ && !section_is_mapped (b->loc->section))
continue;
}
if (b->type == bp_hardware_breakpoint)
{
- if (b->loc->address != (*pc - DECR_PC_AFTER_HW_BREAK))
+ if (b->loc->address != bp_addr)
continue;
if (overlay_debugging /* unmapped overlay section */
- && section_is_overlay (b->section)
- && !section_is_mapped (b->section))
+ && section_is_overlay (b->loc->section)
+ && !section_is_mapped (b->loc->section))
continue;
}
/* Don't consider this a hit. */
--(b->hit_count);
}
+ else if (b->thread != -1 && b->thread != thread_id)
+ {
+ bs->stop = 0;
+ /* Don't consider this a hit. */
+ --(b->hit_count);
+ }
else if (b->ignore_count > 0)
{
b->ignore_count--;
bs->print = 0;
bs->commands = b->commands;
if (bs->commands &&
- (STREQ ("silent", bs->commands->line) ||
- (xdb_commands && STREQ ("Q", bs->commands->line))))
+ (strcmp ("silent", bs->commands->line) == 0
+ || (xdb_commands && strcmp ("Q", bs->commands->line) == 0)))
{
bs->commands = bs->commands->next;
bs->print = 0;
bs->next = NULL; /* Terminate the chain */
bs = root_bs->next; /* Re-grab the head of the chain */
- if (real_breakpoint && bs)
- {
- if (bs->breakpoint_at->type == bp_hardware_breakpoint)
- {
- if (DECR_PC_AFTER_HW_BREAK != 0)
- {
- *pc = *pc - DECR_PC_AFTER_HW_BREAK;
- write_pc (*pc);
- }
- }
- else
- {
- if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs)
- {
- *pc = bp_addr;
-#if defined (SHIFT_INST_REGS)
- SHIFT_INST_REGS ();
-#else /* No SHIFT_INST_REGS. */
- write_pc (bp_addr);
-#endif /* No SHIFT_INST_REGS. */
- }
- }
- }
-
/* The value of a hardware watchpoint hasn't changed, but the
intermediate memory locations we are watching may have. */
if (bs && !bs->stop &&
{
struct breakpoint *b;
ALL_BREAKPOINTS (b)
- if (b->enable_state == bp_enabled && b->type == bp_watchpoint)
+ if (breakpoint_enabled (b) && b->type == bp_watchpoint)
return 1;
return 0;
}
int
bpstat_have_active_hw_watchpoints (void)
{
- struct breakpoint *b;
- ALL_BREAKPOINTS (b)
- if ((b->enable_state == bp_enabled) &&
- (b->loc->inserted) &&
- ((b->type == bp_hardware_watchpoint) ||
- (b->type == bp_read_watchpoint) ||
- (b->type == bp_access_watchpoint)))
+ struct bp_location *bpt;
+ ALL_BP_LOCATIONS (bpt)
+ if (breakpoint_enabled (bpt->owner)
+ && bpt->inserted
+ && bpt->loc_type == bp_loc_hardware_watchpoint)
return 1;
return 0;
}
if (addressprint)
{
annotate_field (4);
- ui_out_field_core_addr (uiout, "addr", b->loc->address);
+ if (b->pending)
+ {
+ ui_out_field_string (uiout, "addr", "<PENDING>");
+ if (TARGET_ADDR_BIT <= 32)
+ ui_out_spaces (uiout, 2);
+ else
+ ui_out_spaces (uiout, 8);
+ }
+ else
+ ui_out_field_core_addr (uiout, "addr", b->loc->address);
}
annotate_field (5);
*last_addr = b->loc->address;
if (b->source_file)
{
- sym = find_pc_sect_function (b->loc->address, b->section);
+ sym = find_pc_sect_function (b->loc->address, b->loc->section);
if (sym)
{
ui_out_text (uiout, "in ");
ui_out_text (uiout, ":");
ui_out_field_int (uiout, "line", b->line_number);
}
+ else if (b->pending)
+ {
+ ui_out_field_string (uiout, "pending", b->addr_string);
+ }
else
{
print_address_symbolic (b->loc->address, stb->stream, demangle, "");
ui_out_field_stream (uiout, "cond", stb);
ui_out_text (uiout, "\n");
}
-
+
+ if (b->pending && b->cond_string)
+ {
+ annotate_field (7);
+ ui_out_text (uiout, "\tstop only if ");
+ ui_out_field_string (uiout, "cond", b->cond_string);
+ ui_out_text (uiout, "\n");
+ }
+
if (b->thread != -1)
{
/* FIXME should make an annotation for this */
ALL_BREAKPOINTS (b)
if (b->loc->address == pc) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
+ if (!b->pending && (!overlay_debugging || b->loc->section == section))
others++;
if (others > 0)
{
printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
ALL_BREAKPOINTS (b)
if (b->loc->address == pc) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
+ if (!b->pending && (!overlay_debugging || b->loc->section == section))
{
others--;
printf_filtered ("%d%s%s ",
static void
check_duplicates (struct breakpoint *bpt)
{
- struct breakpoint *b;
+ struct bp_location *b;
int count = 0;
- struct breakpoint *perm_bp = 0;
+ struct bp_location *perm_bp = 0;
CORE_ADDR address = bpt->loc->address;
- asection *section = bpt->section;
+ asection *section = bpt->loc->section;
if (! breakpoint_address_is_meaningful (bpt))
return;
- ALL_BREAKPOINTS (b)
- if (b->enable_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && b->loc->address == address /* address / overlay match */
+ ALL_BP_LOCATIONS (b)
+ if (b->owner->enable_state != bp_disabled
+ && b->owner->enable_state != bp_shlib_disabled
+ && !b->owner->pending
+ && b->owner->enable_state != bp_call_disabled
+ && b->address == address /* address / overlay match */
&& (!overlay_debugging || b->section == section)
- && breakpoint_address_is_meaningful (b))
+ && breakpoint_address_is_meaningful (b->owner))
{
/* Have we found a permanent breakpoint? */
- if (b->enable_state == bp_permanent)
+ if (b->owner->enable_state == bp_permanent)
{
perm_bp = b;
break;
}
count++;
- b->loc->duplicate = count > 1;
+ b->duplicate = count > 1;
}
/* If we found a permanent breakpoint at this address, go over the
duplicates. */
if (perm_bp)
{
- perm_bp->loc->duplicate = 0;
+ perm_bp->duplicate = 0;
/* Permanent breakpoint should always be inserted. */
- if (! perm_bp->loc->inserted)
+ if (! perm_bp->inserted)
internal_error (__FILE__, __LINE__,
"allegedly permanent breakpoint is not "
"actually inserted");
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
if (b != perm_bp)
{
- if (b->loc->inserted)
- internal_error (__FILE__, __LINE__,
- "another breakpoint was inserted on top of "
- "a permanent breakpoint");
-
- if (b->enable_state != bp_disabled
- && b->enable_state != bp_shlib_disabled
- && b->enable_state != bp_call_disabled
- && b->loc->address == address /* address / overlay match */
+ if (b->owner->enable_state != bp_disabled
+ && b->owner->enable_state != bp_shlib_disabled
+ && !b->owner->pending
+ && b->owner->enable_state != bp_call_disabled
+ && b->address == address /* address / overlay match */
&& (!overlay_debugging || b->section == section)
- && breakpoint_address_is_meaningful (b))
- b->loc->duplicate = 1;
+ && breakpoint_address_is_meaningful (b->owner))
+ {
+ if (b->inserted)
+ internal_error (__FILE__, __LINE__,
+ "another breakpoint was inserted on top of "
+ "a permanent breakpoint");
+
+ b->duplicate = 1;
+ }
}
}
}
}
}
+/* Allocate a struct bp_location. */
+
+static struct bp_location *
+allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type)
+{
+ struct bp_location *loc, *loc_p;
+
+ loc = xmalloc (sizeof (struct bp_location));
+ memset (loc, 0, sizeof (*loc));
+
+ loc->owner = bpt;
+
+ switch (bp_type)
+ {
+ case bp_breakpoint:
+ case bp_until:
+ case bp_finish:
+ case bp_longjmp:
+ case bp_longjmp_resume:
+ case bp_step_resume:
+ case bp_through_sigtramp:
+ case bp_watchpoint_scope:
+ case bp_call_dummy:
+ case bp_shlib_event:
+ case bp_thread_event:
+ case bp_overlay_event:
+ case bp_catch_load:
+ case bp_catch_unload:
+ loc->loc_type = bp_loc_software_breakpoint;
+ break;
+ case bp_hardware_breakpoint:
+ loc->loc_type = bp_loc_hardware_breakpoint;
+ break;
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ loc->loc_type = bp_loc_hardware_watchpoint;
+ break;
+ case bp_watchpoint:
+ case bp_catch_fork:
+ case bp_catch_vfork:
+ case bp_catch_exec:
+ case bp_catch_catch:
+ case bp_catch_throw:
+ loc->loc_type = bp_loc_other;
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, "unknown breakpoint type");
+ }
+
+ /* Add this breakpoint to the end of the chain. */
+
+ loc_p = bp_location_chain;
+ if (loc_p == 0)
+ bp_location_chain = loc;
+ else
+ {
+ while (loc_p->next)
+ loc_p = loc_p->next;
+ loc_p->next = loc;
+ }
+
+ return loc;
+}
+
/* set_raw_breakpoint() is a low level routine for allocating and
partially initializing a breakpoint of type BPTYPE. The newly
created breakpoint's address, section, source file name, and line
b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint));
memset (b, 0, sizeof (*b));
- b->loc = (struct bp_location *) xmalloc (sizeof (struct bp_location));
- memset (b->loc, 0, sizeof (*b->loc));
+ b->loc = allocate_bp_location (b, bptype);
b->loc->requested_address = sal.pc;
b->loc->address = adjust_breakpoint_address (b->loc->requested_address);
if (sal.symtab == NULL)
else
b->source_file = savestring (sal.symtab->filename,
strlen (sal.symtab->filename));
- b->section = sal.section;
+ b->loc->section = sal.section;
b->type = bptype;
b->language = current_language->la_language;
b->input_radix = input_radix;
b->forked_inferior_pid = 0;
b->exec_pathname = NULL;
b->ops = NULL;
+ b->pending = 0;
/* Add this breakpoint to the end of the chain
so that a list of breakpoints will come out in order
delete_breakpoint (b);
}
+struct captured_parse_breakpoint_args
+ {
+ char **arg_p;
+ struct symtabs_and_lines *sals_p;
+ char ***addr_string_p;
+ int *not_found_ptr;
+ };
+
+struct lang_and_radix
+ {
+ enum language lang;
+ int radix;
+ };
+
+/* Cleanup helper routine to restore the current language and
+ input radix. */
+static void
+do_restore_lang_radix_cleanup (void *old)
+{
+ struct lang_and_radix *p = old;
+ set_language (p->lang);
+ input_radix = p->radix;
+}
+
+/* Try and resolve a pending breakpoint. */
+static int
+resolve_pending_breakpoint (struct breakpoint *b)
+{
+ /* Try and reparse the breakpoint in case the shared library
+ is now loaded. */
+ struct symtabs_and_lines sals;
+ struct symtab_and_line pending_sal;
+ char **cond_string = (char **) NULL;
+ char *copy_arg = b->addr_string;
+ char **addr_string;
+ char *errmsg;
+ int rc;
+ int not_found = 0;
+ struct ui_file *old_gdb_stderr;
+ struct lang_and_radix old_lr;
+ struct cleanup *old_chain;
+
+ /* Set language, input-radix, then reissue breakpoint command.
+ Ensure the language and input-radix are restored afterwards. */
+ old_lr.lang = current_language->la_language;
+ old_lr.radix = input_radix;
+ old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr);
+
+ set_language (b->language);
+ input_radix = b->input_radix;
+ rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b);
+
+ if (rc == GDB_RC_OK)
+ /* Pending breakpoint has been resolved. */
+ printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string);
+
+ do_cleanups (old_chain);
+ return rc;
+}
+
#ifdef SOLIB_ADD
void
remove_solib_event_breakpoints (void)
#if defined (PC_SOLIB)
if (((b->type == bp_breakpoint) ||
(b->type == bp_hardware_breakpoint)) &&
- b->enable_state == bp_enabled &&
+ breakpoint_enabled (b) &&
!b->loc->duplicate &&
PC_SOLIB (b->loc->address))
{
void
re_enable_breakpoints_in_shlibs (void)
{
- struct breakpoint *b;
+ struct breakpoint *b, *tmp;
- ALL_BREAKPOINTS (b)
+ ALL_BREAKPOINTS_SAFE (b, tmp)
+ {
if (b->enable_state == bp_shlib_disabled)
- {
- char buf[1];
-
- /* Do not reenable the breakpoint if the shared library
- is still not mapped in. */
- if (target_read_memory (b->loc->address, buf, 1) == 0)
- b->enable_state = bp_enabled;
- }
+ {
+ char buf[1], *lib;
+
+ /* Do not reenable the breakpoint if the shared library
+ is still not mapped in. */
+ lib = PC_SOLIB (b->loc->address);
+ if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0)
+ b->enable_state = bp_enabled;
+ }
+ else if (b->pending && (b->enable_state == bp_enabled))
+ {
+ if (resolve_pending_breakpoint (b) == GDB_RC_OK)
+ delete_breakpoint (b);
+ }
+ }
}
#endif
int thread = -1; /* All threads. */
/* Set a breakpoint on the specified hook. */
- sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical);
+ sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL);
addr_end = hookname;
if (sals.nelts == 0)
*other_type_used = 0;
ALL_BREAKPOINTS (b)
{
- if (b->enable_state == bp_enabled)
+ if (breakpoint_enabled (b))
{
if (b->type == type)
i++;
else if ((b->type == bp_hardware_watchpoint ||
b->type == bp_read_watchpoint ||
- b->type == bp_access_watchpoint)
- && b->enable_state == bp_enabled)
+ b->type == bp_access_watchpoint))
*other_type_used = 1;
}
}
|| (b->type == bp_read_watchpoint)
|| (b->type == bp_access_watchpoint)
|| ep_is_exception_catchpoint (b))
- && (b->enable_state == bp_enabled))
+ && breakpoint_enabled (b))
{
b->enable_state = bp_call_disabled;
check_duplicates (b);
if (say_where)
{
- if (addressprint || b->source_file == NULL)
+ if (b->pending)
+ {
+ printf_filtered (" (%s) pending.", b->addr_string);
+ }
+ else
{
- printf_filtered (" at ");
- print_address_numeric (b->loc->address, 1, gdb_stdout);
+ if (addressprint || b->source_file == NULL)
+ {
+ printf_filtered (" at ");
+ print_address_numeric (b->loc->address, 1, gdb_stdout);
+ }
+ if (b->source_file)
+ printf_filtered (": file %s, line %d.",
+ b->source_file, b->line_number);
}
- if (b->source_file)
- printf_filtered (": file %s, line %d.",
- b->source_file, b->line_number);
}
do_cleanups (old_chain);
if (ui_out_is_mi_like_p (uiout))
SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
COND[i] and COND_STRING[i] values.
+ The parameter PENDING_BP points to a pending breakpoint that is
+ the basis of the breakpoints currently being created. The pending
+ breakpoint may contain a separate condition string or commands
+ that were added after the initial pending breakpoint was created.
+
NOTE: If the function succeeds, the caller is expected to cleanup
the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
array contents). If the function fails (error() is called), the
create_breakpoints (struct symtabs_and_lines sals, char **addr_string,
struct expression **cond, char **cond_string,
enum bptype type, enum bpdisp disposition,
- int thread, int ignore_count, int from_tty)
+ int thread, int ignore_count, int from_tty,
+ struct breakpoint *pending_bp)
{
if (type == bp_hardware_breakpoint)
{
b->ignore_count = ignore_count;
b->enable_state = bp_enabled;
b->disposition = disposition;
+ /* If resolving a pending breakpoint, a check must be made to see if
+ the user has specified a new condition or commands for the
+ breakpoint. A new condition will override any condition that was
+ initially specified with the initial breakpoint command. */
+ if (pending_bp)
+ {
+ char *arg;
+ if (pending_bp->cond_string)
+ {
+ arg = pending_bp->cond_string;
+ b->cond_string = savestring (arg, strlen (arg));
+ b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0);
+ if (*arg)
+ error ("Junk at end of pending breakpoint condition expression");
+ }
+ /* If there are commands associated with the breakpoint, they should
+ be copied too. */
+ if (pending_bp->commands)
+ b->commands = copy_command_lines (pending_bp->commands);
+ }
mention (b);
}
}
static void
parse_breakpoint_sals (char **address,
struct symtabs_and_lines *sals,
- char ***addr_string)
+ char ***addr_string,
+ int *not_found_ptr)
{
char *addr_start = *address;
*addr_string = NULL;
|| ((strchr ("+-", (*address)[0]) != NULL)
&& ((*address)[1] != '['))))
*sals = decode_line_1 (address, 1, default_breakpoint_symtab,
- default_breakpoint_line, addr_string);
+ default_breakpoint_line, addr_string,
+ not_found_ptr);
else
- *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string);
+ *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0,
+ addr_string, not_found_ptr);
}
/* For any SAL that didn't have a canonical string, fill one in. */
if (sals->nelts > 0 && *addr_string == NULL)
}
}
+static int
+do_captured_parse_breakpoint (struct ui_out *ui, void *data)
+{
+ struct captured_parse_breakpoint_args *args = data;
+
+ parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p,
+ args->not_found_ptr);
+
+ return GDB_RC_OK;
+}
+
/* Set a breakpoint according to ARG (function, linenum or *address)
flag: first bit : 0 non-temporary, 1 temporary.
- second bit : 0 normal breakpoint, 1 hardware breakpoint. */
+ second bit : 0 normal breakpoint, 1 hardware breakpoint.
-static void
-break_command_1 (char *arg, int flag, int from_tty)
+ PENDING_BP is non-NULL when this function is being called to resolve
+ a pending breakpoint. */
+
+static int
+break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp)
{
int tempflag, hardwareflag;
struct symtabs_and_lines sals;
struct expression **cond = 0;
- /* Pointers in arg to the start, and one past the end, of the
- condition. */
+ struct symtab_and_line pending_sal;
char **cond_string = (char **) NULL;
+ char *copy_arg;
+ char *err_msg;
char *addr_start = arg;
char **addr_string;
struct cleanup *old_chain;
struct cleanup *breakpoint_chain = NULL;
- int i;
+ struct captured_parse_breakpoint_args parse_args;
+ int i, rc;
+ int pending = 0;
int thread = -1;
int ignore_count = 0;
+ int not_found = 0;
hardwareflag = flag & BP_HARDWAREFLAG;
tempflag = flag & BP_TEMPFLAG;
sals.sals = NULL;
sals.nelts = 0;
addr_string = NULL;
- parse_breakpoint_sals (&arg, &sals, &addr_string);
- if (!sals.nelts)
- return;
+ parse_args.arg_p = &arg;
+ parse_args.sals_p = &sals;
+ parse_args.addr_string_p = &addr_string;
+ parse_args.not_found_ptr = ¬_found;
+
+ rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint,
+ &parse_args, NULL, &err_msg,
+ RETURN_MASK_ALL);
+
+ /* If caller is interested in rc value from parse, set value. */
+
+ if (rc != GDB_RC_OK)
+ {
+ /* Check for file or function not found. */
+ if (not_found)
+ {
+ /* If called to resolve pending breakpoint, just return error code. */
+ if (pending_bp)
+ return rc;
+
+ error_output_message (NULL, err_msg);
+ xfree (err_msg);
+ if (!query ("Make breakpoint pending on future shared library load? "))
+ return rc;
+ copy_arg = xstrdup (addr_start);
+ addr_string = ©_arg;
+ sals.nelts = 1;
+ sals.sals = &pending_sal;
+ pending_sal.pc = 0;
+ pending = 1;
+ }
+ else
+ return rc;
+ }
+ else if (!sals.nelts)
+ return GDB_RC_FAIL;
/* Create a chain of things that always need to be cleaned up. */
old_chain = make_cleanup (null_cleanup, 0);
- /* Make sure that all storage allocated to SALS gets freed. */
- make_cleanup (xfree, sals.sals);
-
- /* Cleanup the addr_string array but not its contents. */
- make_cleanup (xfree, addr_string);
+ if (!pending)
+ {
+ /* Make sure that all storage allocated to SALS gets freed. */
+ make_cleanup (xfree, sals.sals);
+
+ /* Cleanup the addr_string array but not its contents. */
+ make_cleanup (xfree, addr_string);
+ }
/* Allocate space for all the cond expressions. */
cond = xcalloc (sals.nelts, sizeof (struct expression *));
/* Resolve all line numbers to PC's and verify that the addresses
are ok for the target. */
- breakpoint_sals_to_pc (&sals, addr_start);
+ if (!pending)
+ breakpoint_sals_to_pc (&sals, addr_start);
/* Verify that condition can be parsed, before setting any
breakpoints. Allocate a separate condition expression for each
breakpoint. */
thread = -1; /* No specific thread yet */
- for (i = 0; i < sals.nelts; i++)
+ if (!pending)
{
- char *tok = arg;
- while (tok && *tok)
+ for (i = 0; i < sals.nelts; i++)
{
- char *end_tok;
- int toklen;
- char *cond_start = NULL;
- char *cond_end = NULL;
- while (*tok == ' ' || *tok == '\t')
- tok++;
-
- end_tok = tok;
-
- while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
- end_tok++;
-
- toklen = end_tok - tok;
-
- if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ char *tok = arg;
+ while (tok && *tok)
{
- tok = cond_start = end_tok + 1;
- cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0);
- make_cleanup (xfree, cond[i]);
- cond_end = tok;
- cond_string[i] = savestring (cond_start, cond_end - cond_start);
- make_cleanup (xfree, cond_string[i]);
- }
- else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
- {
- char *tmptok;
-
- tok = end_tok + 1;
- tmptok = tok;
- thread = strtol (tok, &tok, 0);
- if (tok == tmptok)
- error ("Junk after thread keyword.");
- if (!valid_thread_id (thread))
- error ("Unknown thread %d\n", thread);
+ char *end_tok;
+ int toklen;
+ char *cond_start = NULL;
+ char *cond_end = NULL;
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+
+ end_tok = tok;
+
+ while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000')
+ end_tok++;
+
+ toklen = end_tok - tok;
+
+ if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
+ {
+ tok = cond_start = end_tok + 1;
+ cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc),
+ 0);
+ make_cleanup (xfree, cond[i]);
+ cond_end = tok;
+ cond_string[i] = savestring (cond_start,
+ cond_end - cond_start);
+ make_cleanup (xfree, cond_string[i]);
+ }
+ else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
+ {
+ char *tmptok;
+
+ tok = end_tok + 1;
+ tmptok = tok;
+ thread = strtol (tok, &tok, 0);
+ if (tok == tmptok)
+ error ("Junk after thread keyword.");
+ if (!valid_thread_id (thread))
+ error ("Unknown thread %d\n", thread);
+ }
+ else
+ error ("Junk at end of arguments.");
}
- else
- error ("Junk at end of arguments.");
}
+ create_breakpoints (sals, addr_string, cond, cond_string,
+ hardwareflag ? bp_hardware_breakpoint
+ : bp_breakpoint,
+ tempflag ? disp_del : disp_donttouch,
+ thread, ignore_count, from_tty,
+ pending_bp);
}
-
- create_breakpoints (sals, addr_string, cond, cond_string,
- hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
- tempflag ? disp_del : disp_donttouch,
- thread, ignore_count, from_tty);
-
+ else
+ {
+ struct symtab_and_line sal;
+ struct breakpoint *b;
+
+ sal.symtab = NULL;
+ sal.pc = 0;
+
+ make_cleanup (xfree, copy_arg);
+
+ b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint
+ : bp_breakpoint);
+ set_breakpoint_count (breakpoint_count + 1);
+ b->number = breakpoint_count;
+ b->cond = *cond;
+ b->thread = thread;
+ b->addr_string = *addr_string;
+ b->cond_string = *cond_string;
+ b->ignore_count = ignore_count;
+ b->pending = 1;
+ b->disposition = tempflag ? disp_del : disp_donttouch;
+ b->from_tty = from_tty;
+ b->flag = flag;
+ mention (b);
+ }
+
if (sals.nelts > 1)
{
warning ("Multiple breakpoints were set.");
discard_cleanups (breakpoint_chain);
/* But cleanup everything else. */
do_cleanups (old_chain);
+
+ return GDB_RC_OK;
}
/* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
sals.nelts = 0;
address_end = args->address;
addr_string = NULL;
- parse_breakpoint_sals (&address_end, &sals, &addr_string);
+ parse_breakpoint_sals (&address_end, &sals, &addr_string, 0);
if (!sals.nelts)
return GDB_RC_NONE;
create_breakpoints (sals, addr_string, cond, cond_string,
args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint,
args->tempflag ? disp_del : disp_donttouch,
- args->thread, args->ignore_count, 0/*from-tty*/);
+ args->thread, args->ignore_count, 0/*from-tty*/,
+ NULL/*pending_bp*/);
/* That's it. Discard the cleanups for data inserted into the
breakpoint. */
addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args);
else
addr_string = xstrprintf ("*0x%s", paddr_nz (high));
- break_command_1 (addr_string, flag, from_tty);
+ break_command_1 (addr_string, flag, from_tty, NULL);
xfree (addr_string);
}
else
beg_addr_string = addr_string;
sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0,
- (char ***) NULL);
+ (char ***) NULL, NULL);
xfree (beg_addr_string);
old_chain = make_cleanup (xfree, sals.sals);
extra_args);
else
break_string = xstrprintf ("*0x%s", paddr_nz (high));
- break_command_1 (break_string, flag, from_tty);
+ break_command_1 (break_string, flag, from_tty, NULL);
xfree (break_string);
}
else
void
break_command (char *arg, int from_tty)
{
- break_command_1 (arg, 0, from_tty);
+ break_command_1 (arg, 0, from_tty, NULL);
}
void
void
tbreak_command (char *arg, int from_tty)
{
- break_command_1 (arg, BP_TEMPFLAG, from_tty);
+ break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL);
}
void
static void
hbreak_command (char *arg, int from_tty)
{
- break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
+ break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL);
}
static void
thbreak_command (char *arg, int from_tty)
{
- break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
+ break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL);
}
static void
if (badInput)
printf_filtered ("Usage: stop in <function | address>\n");
else
- break_command_1 (arg, 0, from_tty);
+ break_command_1 (arg, 0, from_tty, NULL);
}
static void
if (badInput)
printf_filtered ("Usage: stop at <line>\n");
else
- break_command_1 (arg, 0, from_tty);
+ break_command_1 (arg, 0, from_tty, NULL);
}
/* accessflag: hw_write: watch write,
if (default_breakpoint_valid)
sals = decode_line_1 (&arg, 1, default_breakpoint_symtab,
- default_breakpoint_line, (char ***) NULL);
+ default_breakpoint_line, (char ***) NULL, NULL);
else
sals = decode_line_1 (&arg, 1, (struct symtab *) NULL,
- 0, (char ***) NULL);
+ 0, (char ***) NULL, NULL);
if (sals.nelts != 1)
error ("Couldn't get information on specified line.");
do_cleanups (old_chain);
}
-#if 0
-/* These aren't used; I don't konw what they were for. */
-/* Set a breakpoint at the catch clause for NAME. */
-static int
-catch_breakpoint (char *name)
-{
-}
-
-static int
-disable_catch_breakpoint (void)
-{
-}
-
-static int
-delete_catch_breakpoint (void)
-{
-}
-
-static int
-enable_catch_breakpoint (void)
-{
-}
-#endif /* 0 */
-
static void
ep_skip_leading_whitespace (char **s)
{
}
catch_fork_kind;
-#if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
-static void catch_fork_command_1 (catch_fork_kind fork_kind,
- char *arg, int tempflag, int from_tty);
-
static void
catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag,
int from_tty)
break;
}
}
-#endif
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
static void
catch_exec_command_1 (char *arg, int tempflag, int from_tty)
{
and enable reporting of such events. */
create_exec_event_catchpoint (tempflag, cond_string);
}
-#endif
-#if defined(SOLIB_ADD)
static void
catch_load_command_1 (char *arg, int tempflag, int from_tty)
{
SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag,
dll_pathname, cond_string);
}
-#endif /* SOLIB_ADD */
/* Commands to deal with catching exceptions. */
trigger_func_name = xstrdup ("__cxa_throw");
nameptr = trigger_func_name;
- sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL);
+ sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL);
if (sals.nelts == 0)
{
xfree (trigger_func_name);
}
else if (strncmp (arg1_start, "fork", arg1_length) == 0)
{
-#if defined(CHILD_INSERT_FORK_CATCHPOINT)
catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of fork not yet implemented");
-#endif
}
else if (strncmp (arg1_start, "vfork", arg1_length) == 0)
{
-#if defined(CHILD_INSERT_VFORK_CATCHPOINT)
catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of vfork not yet implemented");
-#endif
}
else if (strncmp (arg1_start, "exec", arg1_length) == 0)
{
-#if defined(CHILD_INSERT_EXEC_CATCHPOINT)
catch_exec_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of exec not yet implemented");
-#endif
}
else if (strncmp (arg1_start, "load", arg1_length) == 0)
{
-#if defined(SOLIB_ADD)
catch_load_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
}
else if (strncmp (arg1_start, "unload", arg1_length) == 0)
{
-#if defined(SOLIB_ADD)
catch_unload_command_1 (arg1_end + 1, tempflag, from_tty);
-#else
- error ("Catch of load not implemented");
-#endif
}
else if (strncmp (arg1_start, "stop", arg1_length) == 0)
{
return b;
}
-#if 0
-/* These aren't used; I don't know what they were for. */
-/* Disable breakpoints on all catch clauses described in ARGS. */
-static void
-disable_catch (char *args)
-{
- /* Map the disable command to catch clauses described in ARGS. */
-}
-
-/* Enable breakpoints on all catch clauses described in ARGS. */
-static void
-enable_catch (char *args)
-{
- /* Map the disable command to catch clauses described in ARGS. */
-}
-
-/* Delete breakpoints on all catch clauses in the active scope. */
-static void
-delete_catch (char *args)
-{
- /* Map the delete command to catch clauses described in ARGS. */
-}
-#endif /* 0 */
-
static void
catch_command (char *arg, int from_tty)
{
&& b->type != bp_access_watchpoint
/* Not if b is a watchpoint of any sort... */
&& (((sal.pc && (b->loc->address == sal.pc))
- && (!section_is_overlay (b->section)
- || b->section == sal.section))
+ && (!section_is_overlay (b->loc->section)
+ || b->loc->section == sal.section))
/* Yes, if sal.pc matches b (modulo overlays). */
|| ((default_match || (0 == sal.pc))
&& b->source_file != NULL
&& sal.symtab != NULL
- && STREQ (b->source_file, sal.symtab->filename)
+ && strcmp (b->source_file, sal.symtab->filename) == 0
&& b->line_number == sal.line)))
/* Yes, if sal source file and line matches b. */
{
{
struct breakpoint *b;
bpstat bs;
+ struct bp_location *loc;
if (bpt == NULL)
error ("Internal error (attempted to delete a NULL breakpoint)");
breakpoint_delete_event (bpt->number);
if (bpt->loc->inserted)
- remove_breakpoint (bpt, mark_inserted);
+ remove_breakpoint (bpt->loc, mark_inserted);
if (breakpoint_chain == bpt)
breakpoint_chain = bpt->next;
+ if (bp_location_chain == bpt->loc)
+ bp_location_chain = bpt->loc->next;
+
/* If we have callback-style exception catchpoints, don't go through
the adjustments to the C++ runtime library etc. if the inferior
isn't actually running. target_enable_exception_callback for a
break;
}
+ ALL_BP_LOCATIONS (loc)
+ if (loc->next == bpt->loc)
+ {
+ loc->next = bpt->loc->next;
+ break;
+ }
+
check_duplicates (bpt);
/* If this breakpoint was inserted, and there is another breakpoint
at the same address, we need to insert the other breakpoint. */
{
ALL_BREAKPOINTS (b)
if (b->loc->address == bpt->loc->address
- && b->section == bpt->section
+ && b->loc->section == bpt->loc->section
&& !b->loc->duplicate
&& b->enable_state != bp_disabled
&& b->enable_state != bp_shlib_disabled
+ && !b->pending
&& b->enable_state != bp_call_disabled)
{
int val;
shlib_disabled breakpoint though. There's a fair chance we
can't re-set it if the shared library it's in hasn't been
loaded yet. */
+
+ if (b->pending)
+ break;
+
save_enable = b->enable_state;
if (b->enable_state != bp_shlib_disabled)
b->enable_state = bp_disabled;
set_language (b->language);
input_radix = b->input_radix;
s = b->addr_string;
- sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL);
+ sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, NULL);
for (i = 0; i < sals.nelts; i++)
{
resolve_sal_pc (&sals.sals[i]);
{
s = b->cond_string;
if (b->cond)
- xfree (b->cond);
+ {
+ xfree (b->cond);
+ /* Avoid re-freeing b->exp if an error during the call
+ to parse_exp_1. */
+ b->cond = NULL;
+ }
b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0);
}
the source file name or the line number changes... */
|| (b->source_file != NULL
&& sals.sals[i].symtab != NULL
- && (!STREQ (b->source_file, sals.sals[i].symtab->filename)
+ && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0
|| b->line_number != sals.sals[i].line)
)
/* ...or we switch between having a source file and not having
rather than once for every breakpoint. */
breakpoints_changed ();
}
- b->section = sals.sals[i].section;
+ b->loc->section = sals.sals[i].section;
b->enable_state = save_enable; /* Restore it, this worked. */
/* So for now, just use a global context. */
if (b->exp)
- xfree (b->exp);
+ {
+ xfree (b->exp);
+ /* Avoid re-freeing b->exp if an error during the call to
+ parse_expression. */
+ b->exp = NULL;
+ }
b->exp = parse_expression (b->exp_string);
b->exp_valid_block = innermost_block;
mark = value_mark ();
if (b->val)
- value_free (b->val);
+ {
+ value_free (b->val);
+ /* Avoid re-freeing b->val if an error during the call to
+ evaluate_expression. */
+ b->val = NULL;
+ }
b->val = evaluate_expression (b->exp);
release_value (b->val);
- if (VALUE_LAZY (b->val) && b->enable_state == bp_enabled)
+ if (VALUE_LAZY (b->val) && breakpoint_enabled (b))
value_fetch_lazy (b->val);
if (b->cond_string != NULL)
{
s = b->cond_string;
if (b->cond)
- xfree (b->cond);
+ {
+ xfree (b->cond);
+ /* Avoid re-freeing b->exp if an error during the call
+ to parse_exp_1. */
+ b->cond = NULL;
+ }
b->cond = parse_exp_1 (&s, (struct block *) 0, 0);
}
- if (b->enable_state == bp_enabled)
+ if (breakpoint_enabled (b))
mention (b);
value_free_to_mark (mark);
break;
error ("Hardware breakpoints used exceeds limit.");
}
- if (bpt->enable_state != bp_permanent)
- bpt->enable_state = bp_enabled;
- bpt->disposition = disposition;
- check_duplicates (bpt);
- breakpoints_changed ();
-
- if (bpt->type == bp_watchpoint ||
- bpt->type == bp_hardware_watchpoint ||
- bpt->type == bp_read_watchpoint ||
- bpt->type == bp_access_watchpoint)
+ if (bpt->pending)
{
- if (bpt->exp_valid_block != NULL)
+ if (bpt->enable_state != bp_enabled)
{
- struct frame_info *fr =
- fr = frame_find_by_id (bpt->watchpoint_frame);
- if (fr == NULL)
+ /* When enabling a pending breakpoint, we need to check if the breakpoint
+ is resolvable since shared libraries could have been loaded
+ after the breakpoint was disabled. */
+ breakpoints_changed ();
+ if (resolve_pending_breakpoint (bpt) == GDB_RC_OK)
{
- printf_filtered ("\
-Cannot enable watchpoint %d because the block in which its expression\n\
-is valid is not currently in scope.\n", bpt->number);
- bpt->enable_state = bp_disabled;
+ delete_breakpoint (bpt);
return;
}
-
- save_selected_frame = deprecated_selected_frame;
- save_selected_frame_level = frame_relative_level (deprecated_selected_frame);
- select_frame (fr);
+ bpt->enable_state = bp_enabled;
+ bpt->disposition = disposition;
}
-
- value_free (bpt->val);
- mark = value_mark ();
- bpt->val = evaluate_expression (bpt->exp);
- release_value (bpt->val);
- if (VALUE_LAZY (bpt->val))
- value_fetch_lazy (bpt->val);
-
- if (bpt->type == bp_hardware_watchpoint ||
- bpt->type == bp_read_watchpoint ||
+ }
+ else /* Not a pending breakpoint. */
+ {
+ if (bpt->enable_state != bp_permanent)
+ bpt->enable_state = bp_enabled;
+ bpt->disposition = disposition;
+ check_duplicates (bpt);
+ breakpoints_changed ();
+
+ if (bpt->type == bp_watchpoint ||
+ bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint ||
bpt->type == bp_access_watchpoint)
{
- int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
- int mem_cnt = can_use_hardware_watchpoint (bpt->val);
-
- /* Hack around 'unused var' error for some targets here */
- (void) mem_cnt, i;
- target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
- bpt->type, i + mem_cnt, other_type_used);
- /* we can consider of type is bp_hardware_watchpoint, convert to
- bp_watchpoint in the following condition */
- if (target_resources_ok < 0)
+ if (bpt->exp_valid_block != NULL)
+ {
+ struct frame_info *fr =
+ fr = frame_find_by_id (bpt->watchpoint_frame);
+ if (fr == NULL)
+ {
+ printf_filtered ("\
+Cannot enable watchpoint %d because the block in which its expression\n\
+is valid is not currently in scope.\n", bpt->number);
+ bpt->enable_state = bp_disabled;
+ return;
+ }
+
+ save_selected_frame = deprecated_selected_frame;
+ save_selected_frame_level = frame_relative_level (deprecated_selected_frame);
+ select_frame (fr);
+ }
+
+ value_free (bpt->val);
+ mark = value_mark ();
+ bpt->val = evaluate_expression (bpt->exp);
+ release_value (bpt->val);
+ if (VALUE_LAZY (bpt->val))
+ value_fetch_lazy (bpt->val);
+
+ if (bpt->type == bp_hardware_watchpoint ||
+ bpt->type == bp_read_watchpoint ||
+ bpt->type == bp_access_watchpoint)
{
- printf_filtered ("\
+ int i = hw_watchpoint_used_count (bpt->type, &other_type_used);
+ int mem_cnt = can_use_hardware_watchpoint (bpt->val);
+
+ /* Hack around 'unused var' error for some targets here */
+ (void) mem_cnt, i;
+ target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT (
+ bpt->type, i + mem_cnt, other_type_used);
+ /* we can consider of type is bp_hardware_watchpoint, convert to
+ bp_watchpoint in the following condition */
+ if (target_resources_ok < 0)
+ {
+ printf_filtered ("\
Cannot enable watchpoint %d because target watch resources\n\
have been allocated for other watchpoints.\n", bpt->number);
- bpt->enable_state = bp_disabled;
- value_free_to_mark (mark);
- return;
+ bpt->enable_state = bp_disabled;
+ value_free_to_mark (mark);
+ return;
+ }
}
+
+ if (save_selected_frame_level >= 0)
+ select_frame (save_selected_frame);
+ value_free_to_mark (mark);
}
-
- if (save_selected_frame_level >= 0)
- select_frame (save_selected_frame);
- value_free_to_mark (mark);
}
+
if (modify_breakpoint_hook)
modify_breakpoint_hook (bpt);
breakpoint_modify_event (bpt->number);
sals = decode_line_1 (&string, funfirstline,
default_breakpoint_symtab,
default_breakpoint_line,
- (char ***) NULL);
+ (char ***) NULL, NULL);
else
sals = decode_line_1 (&string, funfirstline,
- (struct symtab *) NULL, 0, (char ***) NULL);
+ (struct symtab *) NULL, 0, (char ***) NULL, NULL);
if (*string)
error ("Junk at end of line specification: %s", string);
return sals;
projects / deliverable / binutils-gdb.git / blobdiff