}
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);
B ? (TMP=B->next, 1): 0; \
B = TMP)
+/* Similar iterators for the low-level breakpoints. */
+
+#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 SHIFT_INST_REGS defined, false otherwise. */
int must_shift_inst_regs =
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;
+}
+
/* 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->address), 0);
+ b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0);
if (*arg)
error ("Junk at end of expression");
}
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->inserted)
continue;
/* Addresses and length of the part of the breakpoint that
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->inserted
- && !b->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->address,
- b->shadow_contents);
- else
- val = target_insert_breakpoint (b->address, b->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->address,
- b->section);
- /* Set a software (trap) breakpoint at the LMA. */
- val = target_insert_breakpoint (addr, b->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->address,
- b->shadow_contents);
- else
- val = target_insert_breakpoint (b->address,
- b->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->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->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->inserted = 1;
+ }
+ }
+ else
+ bpt->inserted = 1;
- if (val)
- return_val = val; /* remember failure */
- }
- else if (ep_is_exception_catchpoint (b)
- && !b->inserted
- && !b->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->address, b->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->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->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->inserted
- && !b->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->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->inserted = 0;
- }
- val = 0;
- }
- }
- }
- /* Failure to insert a watchpoint on any memory value in the
- value chain brings us here. */
- if (!b->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->inserted
- && !b->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->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->inserted)
{
int
remove_hw_watchpoints (void)
{
- struct breakpoint *b;
+ struct bp_location *b;
int val;
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
{
- if (b->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->inserted)
{
remove_breakpoint (b, mark_inserted);
- if (b->type == bp_hardware_breakpoint)
+ if (b->loc_type == bp_loc_hardware_breakpoint)
val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
else
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);
(b->type == bp_catch_vfork) ||
(b->type == bp_catch_fork))
{
- b->address = (CORE_ADDR) NULL;
+ b->loc->address = (CORE_ADDR) NULL;
continue;
}
unnecessary. A call to breakpoint_re_set_one always recomputes
the breakpoint's address from scratch, or deletes it if it can't.
So I think this assignment could be deleted without effect. */
- b->address = (CORE_ADDR) NULL;
+ b->loc->address = (CORE_ADDR) NULL;
}
/* FIXME what about longjmp breakpoints? Re-create them here? */
create_overlay_event_breakpoint ("_ovly_debug_event");
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->inserted)
{
}
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)
+ if (b->loc_type == bp_loc_hardware_breakpoint)
val = target_remove_hw_breakpoint (b->address,
b->shadow_contents);
else
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)
+ if (b->loc_type == bp_loc_hardware_breakpoint)
target_remove_hw_breakpoint (addr, b->shadow_contents);
else
target_remove_breakpoint (addr, b->shadow_contents);
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)
+ if (b->loc_type == bp_loc_hardware_breakpoint)
val = target_remove_hw_breakpoint (b->address,
b->shadow_contents);
else
return val;
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
+ else if (b->loc_type == bp_loc_hardware_watchpoint
+ && breakpoint_enabled (b->owner)
&& !b->duplicate)
{
struct value *v;
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);
/* Failure to remove any of the hardware watchpoints comes here. */
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
+ 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));
return val;
b->inserted = (is == mark_inserted);
}
- else if ((b->type == bp_catch_catch ||
- b->type == bp_catch_throw)
- && b->enable_state == bp_enabled
+ else if ((b->owner->type == bp_catch_catch ||
+ b->owner->type == bp_catch_throw)
+ && breakpoint_enabled (b->owner)
&& !b->duplicate)
{
return val;
b->inserted = (is == mark_inserted);
}
- else if (ep_is_exception_catchpoint (b)
+ else if (ep_is_exception_catchpoint (b->owner)
&& b->inserted /* sometimes previous insert doesn't happen */
- && b->enable_state == bp_enabled
+ && breakpoint_enabled (b->owner)
&& !b->duplicate)
{
void
mark_breakpoints_out (void)
{
- struct breakpoint *b;
+ struct bp_location *bpt;
- ALL_BREAKPOINTS (b)
- b->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->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->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->inserted
- && b->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;
/* We need to check the PC as well as the frame on the sparc,
for signals.exp in the testsuite. */
&& (get_frame_pc (frame)
- >= (b->address
+ >= (b->loc->address
- DEPRECATED_SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * DEPRECATED_REGISTER_SIZE))
- && get_frame_pc (frame) <= b->address)
+ && get_frame_pc (frame) <= b->loc->address)
return 1;
}
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->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);
}
{
case bp_breakpoint:
case bp_hardware_breakpoint:
- if (bs->breakpoint_at->address != bs->breakpoint_at->requested_address)
- breakpoint_adjustment_warning (bs->breakpoint_at->requested_address,
- bs->breakpoint_at->address,
+ if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address)
+ breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address,
+ bs->breakpoint_at->loc->address,
bs->breakpoint_at->number, 1);
annotate_breakpoint (bs->breakpoint_at->number);
ui_out_text (uiout, "\nBreakpoint ");
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
&& b->type != bp_catch_catch
&& b->type != bp_catch_throw) /* a non-watchpoint bp */
{
- if (b->address != bp_addr) /* address doesn't match */
+ 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->address != (*pc - DECR_PC_AFTER_HW_BREAK))
+ if (b->loc->address != (*pc - DECR_PC_AFTER_HW_BREAK))
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;
}
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;
{
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->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->address);
+ ui_out_field_core_addr (uiout, "addr", b->loc->address);
}
annotate_field (5);
- *last_addr = b->address;
+ *last_addr = b->loc->address;
if (b->source_file)
{
- sym = find_pc_sect_function (b->address, b->section);
+ sym = find_pc_sect_function (b->loc->address, b->loc->section);
if (sym)
{
ui_out_text (uiout, "in ");
}
else
{
- print_address_symbolic (b->address, stb->stream, demangle, "");
+ print_address_symbolic (b->loc->address, stb->stream, demangle, "");
ui_out_field_stream (uiout, "at", stb);
}
break;
struct breakpoint *b;
ALL_BREAKPOINTS (b)
- if (b->address == pc) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
+ if (b->loc->address == pc) /* address match / overlay match */
+ if (!overlay_debugging || b->loc->section == section)
others++;
if (others > 0)
{
printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : "");
ALL_BREAKPOINTS (b)
- if (b->address == pc) /* address match / overlay match */
- if (!overlay_debugging || b->section == section)
+ if (b->loc->address == pc) /* address match / overlay match */
+ if (!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;
- CORE_ADDR address = bpt->address;
- asection *section = bpt->section;
+ struct bp_location *perm_bp = 0;
+ CORE_ADDR address = bpt->loc->address;
+ 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
+ ALL_BP_LOCATIONS (b)
+ if (b->owner->enable_state != bp_disabled
+ && b->owner->enable_state != bp_shlib_disabled
+ && 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;
"allegedly permanent breakpoint is not "
"actually inserted");
- ALL_BREAKPOINTS (b)
+ ALL_BP_LOCATIONS (b)
if (b != perm_bp)
{
- if (b->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
+ if (b->owner->enable_state != bp_disabled
+ && b->owner->enable_state != bp_shlib_disabled
+ && b->owner->enable_state != bp_call_disabled
&& b->address == address /* address / overlay match */
&& (!overlay_debugging || b->section == section)
- && breakpoint_address_is_meaningful (b))
- b->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->requested_address = sal.pc;
- b->address = adjust_breakpoint_address (b->requested_address);
+ 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)
b->source_file = 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->enable_state = bp_permanent;
/* By definition, permanent breakpoints are already present in the code. */
- b->inserted = 1;
+ b->loc->inserted = 1;
}
static struct breakpoint *
b = create_internal_breakpoint (0, bp_longjmp_resume);
else
{
- if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
+ if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL)
return;
b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp);
struct breakpoint *b;
struct minimal_symbol *m;
- if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL)
+ if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL)
return;
b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m),
b->enable_state = bp_enabled;
/* addr_string has to be used or breakpoint_re_set will delete me. */
- xasprintf (&b->addr_string, "*0x%s", paddr (b->address));
+ xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address));
return b;
}
#if defined (PC_SOLIB)
if (((b->type == bp_breakpoint) ||
(b->type == bp_hardware_breakpoint)) &&
- b->enable_state == bp_enabled &&
- !b->duplicate &&
- PC_SOLIB (b->address))
+ breakpoint_enabled (b) &&
+ !b->loc->duplicate &&
+ PC_SOLIB (b->loc->address))
{
b->enable_state = bp_shlib_disabled;
if (!silent)
ALL_BREAKPOINTS (b)
if (b->enable_state == bp_shlib_disabled)
{
- char buf[1];
+ char buf[1], *lib;
/* Do not reenable the breakpoint if the shared library
is still not mapped in. */
- if (target_read_memory (b->address, buf, 1) == 0)
+ lib = PC_SOLIB (b->loc->address);
+ if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0)
b->enable_state = bp_enabled;
}
}
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;
}
}
ALL_BREAKPOINTS (b)
if (b->type == bp_longjmp_resume)
{
- b->requested_address = pc;
- b->address = adjust_breakpoint_address (b->requested_address);
+ b->loc->requested_address = pc;
+ b->loc->address = adjust_breakpoint_address (b->loc->requested_address);
b->enable_state = bp_enabled;
b->frame_id = frame_id;
check_duplicates (b);
|| (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 (addressprint || b->source_file == NULL)
{
printf_filtered (" at ");
- print_address_numeric (b->address, 1, gdb_stdout);
+ print_address_numeric (b->loc->address, 1, gdb_stdout);
}
if (b->source_file)
printf_filtered (": file %s, line %d.",
else
/* addr_string has to be used or breakpoint_re_set will delete
me. */
- xasprintf (&b->addr_string, "*0x%s", paddr (b->address));
+ xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address));
b->cond_string = cond_string[i];
b->ignore_count = ignore_count;
b->enable_state = bp_enabled;
|| ((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, NULL);
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, NULL);
}
/* For any SAL that didn't have a canonical string, fill one in. */
if (sals->nelts > 0 && *addr_string == NULL)
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);
scope_breakpoint->frame_id = get_frame_id (prev_frame);
/* Set the address at which we will stop. */
- scope_breakpoint->requested_address = get_frame_pc (prev_frame);
- scope_breakpoint->address =
- adjust_breakpoint_address (scope_breakpoint->requested_address);
+ scope_breakpoint->loc->requested_address
+ = get_frame_pc (prev_frame);
+ scope_breakpoint->loc->address
+ = adjust_breakpoint_address (scope_breakpoint->loc->requested_address);
/* The scope breakpoint is related to the watchpoint. We
will need to act on them together. */
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.");
if (addressprint)
{
annotate_field (4);
- ui_out_field_core_addr (uiout, "addr", b->address);
+ ui_out_field_core_addr (uiout, "addr", b->loc->address);
}
annotate_field (5);
- *last_addr = b->address;
+ *last_addr = b->loc->address;
if (strstr (b->addr_string, "throw") != NULL)
ui_out_field_string (uiout, "what", "exception throw");
else
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);
&& b->type != bp_read_watchpoint
&& b->type != bp_access_watchpoint
/* Not if b is a watchpoint of any sort... */
- && (((sal.pc && (b->address == sal.pc))
- && (!section_is_overlay (b->section)
- || b->section == sal.section))
+ && (((sal.pc && (b->loc->address == sal.pc))
+ && (!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)");
delete_breakpoint_hook (bpt);
breakpoint_delete_event (bpt->number);
- if (bpt->inserted)
- remove_breakpoint (bpt, mark_inserted);
+ if (bpt->loc->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. */
- if (bpt->inserted
+ if (bpt->loc->inserted
&& bpt->type != bp_hardware_watchpoint
&& bpt->type != bp_read_watchpoint
&& bpt->type != bp_access_watchpoint
&& bpt->type != bp_catch_exec)
{
ALL_BREAKPOINTS (b)
- if (b->address == bpt->address
- && b->section == bpt->section
- && !b->duplicate
+ if (b->loc->address == bpt->loc->address
+ && b->loc->section == bpt->loc->section
+ && !b->loc->duplicate
&& b->enable_state != bp_disabled
&& b->enable_state != bp_shlib_disabled
&& b->enable_state != bp_call_disabled)
"a permanent breakpoint");
if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
+ val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents);
else
- val = target_insert_breakpoint (b->address, b->shadow_contents);
+ val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents);
/* If there was an error in the insert, print a message, then stop execution. */
if (val != 0)
{
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->address, 1, tmp_error_stream);
+ print_address_numeric (b->loc->address, 1, tmp_error_stream);
fprintf_filtered (tmp_error_stream, ": %s.\n",
safe_strerror (val));
}
error_stream(tmp_error_stream);
}
else
- b->inserted = 1;
+ b->loc->inserted = 1;
}
}
bp, we mark it as deleted before freeing its storage. */
bpt->type = bp_none;
+ xfree (bpt->loc);
xfree (bpt);
}
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]);
}
/* We need to re-set the breakpoint if the address changes... */
- if (b->address != sals.sals[i].pc
+ if (b->loc->address != sals.sals[i].pc
/* ...or new and old breakpoints both have source files, and
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
savestring (sals.sals[i].symtab->filename,
strlen (sals.sals[i].symtab->filename));
b->line_number = sals.sals[i].line;
- b->requested_address = sals.sals[i].pc;
- b->address = adjust_breakpoint_address (b->requested_address);
+ b->loc->requested_address = sals.sals[i].pc;
+ b->loc->address
+ = adjust_breakpoint_address (b->loc->requested_address);
/* Used to check for duplicates here, but that can
cause trouble, as it doesn't check for disabled
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. */
value_free (b->val);
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)
xfree (b->cond);
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;
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