/* Everything about breakpoints, for GDB.
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GDB.
#include "cli/cli-script.h"
#include "gdb_assert.h"
#include "block.h"
+#include "solist.h"
+#include "observer.h"
+#include "exceptions.h"
#include "gdb-events.h"
static int can_use_hardware_watchpoint (struct value *);
-extern void break_at_finish_command (char *, int);
-extern void break_at_finish_at_depth_command (char *, int);
-
-extern void tbreak_at_finish_command (char *, 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
char *cond_string,
enum bptype bp_kind);
-static void break_at_finish_at_depth_command_1 (char *arg,
- int flag, int from_tty);
-
-static void break_at_finish_command_1 (char *arg, int flag, int from_tty);
-
static void stop_command (char *arg, int from_tty);
static void stopin_command (char *arg, int from_tty);
unloaded. */
#ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
-#define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
+#define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \
error ("catch of library unloads not yet implemented on this platform")
#endif
strncpy (varname, start, p - start);
varname[p - start] = '\0';
val = value_of_internalvar (lookup_internalvar (varname));
- if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT)
+ if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT)
retval = (int) value_as_long (val);
else
{
\f
/* A wrapper function for inserting catchpoints. */
-static int
+static void
insert_catchpoint (struct ui_out *uo, void *args)
{
struct breakpoint *b = (struct breakpoint *) args;
}
if (val < 0)
- throw_exception (RETURN_ERROR);
-
- return 0;
+ throw_reason (RETURN_ERROR);
}
/* Helper routine: free the value chain for a breakpoint (watchpoint). */
if (VALUE_LVAL (v) == lval_memory
&& ! VALUE_LAZY (v))
{
- struct type *vtype = check_typedef (VALUE_TYPE (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
CORE_ADDR addr;
int len, type;
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
+ 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;
|| 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)
+ struct exception e = catch_exception (uiout, insert_catchpoint,
+ bpt->owner, RETURN_MASK_ERROR);
+ exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ",
+ bpt->owner->number);
+ if (e.reason < 0)
bpt->owner->enable_state = bp_disabled;
else
bpt->inserted = 1;
if (VALUE_LVAL (v) == lval_memory
&& ! VALUE_LAZY (v))
{
- struct type *vtype = check_typedef (VALUE_TYPE (v));
+ struct type *vtype = check_typedef (value_type (v));
if (v == b->owner->val_chain
|| (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
CORE_ADDR addr;
int len, type;
- addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- len = TYPE_LENGTH (VALUE_TYPE (v));
+ addr = VALUE_ADDRESS (v) + value_offset (v);
+ len = TYPE_LENGTH (value_type (v));
type = hw_write;
if (b->owner->type == bp_read_watchpoint)
type = hw_read;
struct value *v;
int found = 0;
- addr = target_stopped_data_address ();
- if (addr == 0)
+ if (!target_stopped_data_address (¤t_target, &addr))
continue;
for (v = b->val_chain; v; v = v->next)
{
if (VALUE_LVAL (v) == lval_memory
&& ! VALUE_LAZY (v))
{
- struct type *vtype = check_typedef (VALUE_TYPE (v));
+ struct type *vtype = check_typedef (value_type (v));
if (v == b->val_chain
|| (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
{
CORE_ADDR vaddr;
- vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
+ vaddr = VALUE_ADDRESS (v) + value_offset (v);
/* Exact match not required. Within range is
sufficient. */
if (addr >= vaddr &&
- addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v)))
+ addr < vaddr + TYPE_LENGTH (value_type (v)))
found = 1;
}
}
}
enum gdb_rc
-gdb_breakpoint_query (struct ui_out *uiout, int bnum)
+gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message)
{
struct captured_breakpoint_query_args args;
args.bnum = bnum;
/* For the moment we don't trust print_one_breakpoint() to not throw
an error. */
- return catch_exceptions (uiout, do_captured_breakpoint_query, &args,
- NULL, RETURN_MASK_ALL);
+ return catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args,
+ error_message, RETURN_MASK_ALL);
}
/* Return non-zero if B is user settable (breakpoints, watchpoints,
char astr1[40];
char astr2[40];
- strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l"));
- strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l"));
+ strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8));
+ strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8));
if (have_bnum)
warning ("Breakpoint %d address previously adjusted from %s to %s.",
bnum, astr1, astr2);
}
}
+/* Disable any breakpoints that are in in an unloaded shared library. Only
+ apply to enabled breakpoints, disabled ones can just stay disabled. */
+
+void
+disable_breakpoints_in_unloaded_shlib (struct so_list *solib)
+{
+ struct breakpoint *b;
+ int disabled_shlib_breaks = 0;
+
+#if defined (PC_SOLIB)
+ /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
+ ALL_BREAKPOINTS (b)
+ {
+ if ((b->loc->loc_type == bp_loc_hardware_breakpoint
+ || b->loc->loc_type == bp_loc_software_breakpoint)
+ && breakpoint_enabled (b)
+ && !b->loc->duplicate)
+ {
+ char *so_name = PC_SOLIB (b->loc->address);
+ if (so_name
+ && !strcmp (so_name, solib->so_name))
+ {
+ b->enable_state = bp_shlib_disabled;
+ /* At this point, we cannot rely on remove_breakpoint
+ succeeding so we must mark the breakpoint as not inserted
+ to prevent future errors occurring in remove_breakpoints. */
+ b->loc->inserted = 0;
+ if (!disabled_shlib_breaks)
+ {
+ target_terminal_ours_for_output ();
+ warning ("Temporarily disabling breakpoints for unloaded shared library \"%s\"",
+ so_name);
+ }
+ disabled_shlib_breaks = 1;
+ }
+ }
+ }
+#endif
+}
+
/* Try to reenable any breakpoints in shared libraries. */
void
re_enable_breakpoints_in_shlibs (void)
char **canonical = (char **) NULL;
int thread = -1; /* All threads. */
- /* Set a breakpoint on the specified hook. */
- sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL);
+ /* Set a breakpoint on the specified hook. */
+ sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL,
+ 0, &canonical, NULL);
addr_end = hookname;
if (sals.nelts == 0)
create_solib_unload_event_breakpoint (char *hookname, int tempflag,
char *dll_pathname, char *cond_string)
{
- solib_load_unload_1 (hookname,tempflag, dll_pathname,
+ solib_load_unload_1 (hookname, tempflag, dll_pathname,
cond_string, bp_catch_unload);
}
}
}
-static int
+static void
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)
static int
break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp)
{
+ struct exception e;
int tempflag, hardwareflag;
struct symtabs_and_lines sals;
struct expression **cond = 0;
struct cleanup *old_chain;
struct cleanup *breakpoint_chain = NULL;
struct captured_parse_breakpoint_args parse_args;
- int i, rc;
+ int i;
int pending = 0;
int thread = -1;
int ignore_count = 0;
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);
+ e = catch_exception (uiout, do_captured_parse_breakpoint,
+ &parse_args, RETURN_MASK_ALL);
/* If caller is interested in rc value from parse, set value. */
-
- if (rc != GDB_RC_OK)
+ switch (e.reason)
{
- /* Check for file or function not found. */
- if (not_found)
+ case RETURN_QUIT:
+ exception_print (gdb_stderr, e);
+ return e.reason;
+ case RETURN_ERROR:
+ switch (e.error)
{
- /* If called to resolve pending breakpoint, just return error code. */
+ case NOT_FOUND_ERROR:
+ /* If called to resolve pending breakpoint, just return
+ error code. */
if (pending_bp)
- return rc;
+ return e.reason;
- error_output_message (NULL, err_msg);
- xfree (err_msg);
+ exception_print (gdb_stderr, e);
- /* If pending breakpoint support is turned off, throw error. */
+ /* If pending breakpoint support is turned off, throw
+ error. */
if (pending_break_support == AUTO_BOOLEAN_FALSE)
- throw_exception (RETURN_ERROR);
+ throw_reason (RETURN_ERROR);
- /* If pending breakpoint support is auto query and the user selects
- no, then simply return the error code. */
+ /* If pending breakpoint support is auto query and the user
+ selects no, then simply return the error code. */
if (pending_break_support == AUTO_BOOLEAN_AUTO &&
!nquery ("Make breakpoint pending on future shared library load? "))
- return rc;
+ return e.reason;
- /* At this point, either the user was queried about setting a
- pending breakpoint and selected yes, or pending breakpoint
- behavior is on and thus a pending breakpoint is defaulted
- on behalf of the user. */
+ /* At this point, either the user was queried about setting
+ a pending breakpoint and selected yes, or pending
+ breakpoint behavior is on and thus a pending breakpoint
+ is defaulted on behalf of the user. */
copy_arg = xstrdup (addr_start);
addr_string = ©_arg;
sals.nelts = 1;
sals.sals = &pending_sal;
pending_sal.pc = 0;
pending = 1;
+ break;
+ default:
+ exception_print (gdb_stderr, e);
+ return e.reason;
}
- else
- return rc;
+ default:
+ if (!sals.nelts)
+ return GDB_RC_FAIL;
}
- 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);
};
static int
-do_captured_breakpoint (void *data)
+do_captured_breakpoint (struct ui_out *uiout, void *data)
{
struct captured_breakpoint_args *args = data;
struct symtabs_and_lines sals;
enum gdb_rc
gdb_breakpoint (char *address, char *condition,
int hardwareflag, int tempflag,
- int thread, int ignore_count)
+ int thread, int ignore_count,
+ char **error_message)
{
struct captured_breakpoint_args args;
args.address = address;
args.tempflag = tempflag;
args.thread = thread;
args.ignore_count = ignore_count;
- return catch_errors (do_captured_breakpoint, &args,
- NULL, RETURN_MASK_ALL);
-}
-
-
-static void
-break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty)
-{
- struct frame_info *frame;
- CORE_ADDR low, high, selected_pc = 0;
- char *extra_args = NULL;
- char *level_arg;
- int extra_args_len = 0, if_arg = 0;
-
- if (!arg ||
- (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
- {
-
- if (default_breakpoint_valid)
- {
- if (deprecated_selected_frame)
- {
- selected_pc = get_frame_pc (deprecated_selected_frame);
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- level_arg = (char *) xmalloc (extra_args - arg);
- strncpy (level_arg, arg, extra_args - arg - 1);
- level_arg[extra_args - arg - 1] = '\0';
- }
- else
- {
- level_arg = (char *) xmalloc (strlen (arg) + 1);
- strcpy (level_arg, arg);
- }
-
- frame = parse_frame_specification (level_arg);
- if (frame)
- selected_pc = get_frame_pc (frame);
- else
- selected_pc = 0;
- }
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
-
- if (selected_pc)
- {
- if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high))
- {
- char *addr_string;
- if (extra_args_len)
- 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, NULL);
- xfree (addr_string);
- }
- else
- error ("No function contains the specified address");
- }
- else
- error ("Unable to set breakpoint at procedure exit");
-}
-
-
-static void
-break_at_finish_command_1 (char *arg, int flag, int from_tty)
-{
- char *addr_string, *break_string, *beg_addr_string;
- CORE_ADDR low, high;
- struct symtabs_and_lines sals;
- struct symtab_and_line sal;
- struct cleanup *old_chain;
- char *extra_args = NULL;
- int extra_args_len = 0;
- int i, if_arg = 0;
-
- if (!arg ||
- (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t')))
- {
- if (default_breakpoint_valid)
- {
- if (deprecated_selected_frame)
- {
- addr_string = xstrprintf ("*0x%s",
- paddr_nz (get_frame_pc (deprecated_selected_frame)));
- if (arg)
- if_arg = 1;
- }
- else
- error ("No selected frame.");
- }
- else
- error ("No default breakpoint address now.");
- }
- else
- {
- addr_string = (char *) xmalloc (strlen (arg) + 1);
- strcpy (addr_string, arg);
- }
-
- if (if_arg)
- {
- extra_args = arg;
- extra_args_len = strlen (arg);
- }
- else if (arg)
- {
- /* get the stuff after the function name or address */
- extra_args = strchr (arg, ' ');
- if (extra_args)
- {
- extra_args++;
- extra_args_len = strlen (extra_args);
- }
- }
-
- sals.sals = NULL;
- sals.nelts = 0;
-
- beg_addr_string = addr_string;
- sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0,
- (char ***) NULL, NULL);
-
- xfree (beg_addr_string);
- old_chain = make_cleanup (xfree, sals.sals);
- for (i = 0; (i < sals.nelts); i++)
- {
- sal = sals.sals[i];
- if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high))
- {
- break_string;
- if (extra_args_len)
- break_string = xstrprintf ("*0x%s %s", paddr_nz (high),
- extra_args);
- else
- break_string = xstrprintf ("*0x%s", paddr_nz (high));
- break_command_1 (break_string, flag, from_tty, NULL);
- xfree (break_string);
- }
- else
- error ("No function contains the specified address");
- }
- if (sals.nelts > 1)
- {
- warning ("Multiple breakpoints were set.\n");
- warning ("Use the \"delete\" command to delete unwanted breakpoints.");
- }
- do_cleanups (old_chain);
+ return catch_exceptions_with_msg (uiout, do_captured_breakpoint, &args,
+ error_message, RETURN_MASK_ALL);
}
break_command_1 (arg, 0, from_tty, NULL);
}
-void
-break_at_finish_command (char *arg, int from_tty)
-{
- break_at_finish_command_1 (arg, 0, from_tty);
-}
-
-void
-break_at_finish_at_depth_command (char *arg, int from_tty)
-{
- break_at_finish_at_depth_command_1 (arg, 0, from_tty);
-}
-
void
tbreak_command (char *arg, int from_tty)
{
break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL);
}
-void
-tbreak_at_finish_command (char *arg, int from_tty)
-{
- break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty);
-}
-
static void
hbreak_command (char *arg, int from_tty)
{
{
/* Ahh, memory we actually used! Check if we can cover
it with hardware watchpoints. */
- struct type *vtype = check_typedef (VALUE_TYPE (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 a
|| (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
&& TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
{
- CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v);
- int len = TYPE_LENGTH (VALUE_TYPE (v));
+ CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v);
+ int len = TYPE_LENGTH (value_type (v));
if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len))
return 0;
get_frame_id (deprecated_selected_frame),
bp_until);
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
old_chain = make_cleanup_delete_breakpoint (breakpoint);
else
old_chain = make_exec_cleanup_delete_breakpoint (breakpoint);
where we get a chance to do that is in fetch_inferior_event, so
we must set things up for that. */
- if (event_loop_p && target_can_async_p ())
+ if (target_can_async_p ())
{
/* In this case the arg for the continuation is just the point
in the exec_cleanups chain from where to start doing
sal.pc = get_frame_pc (prev_frame);
breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame),
bp_until);
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
make_cleanup_delete_breakpoint (breakpoint);
else
make_exec_cleanup_delete_breakpoint (breakpoint);
proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
/* Do the cleanups now, anly if we are not running asynchronously,
of if we are, but the target is still synchronous. */
- if (!event_loop_p || !target_can_async_p ())
+ if (!target_can_async_p ())
do_cleanups (old_chain);
}
A real solution to this problem might involve reference counts in bp's,
and/or giving them pointers back to their referencing bpstat's, and
teaching delete_breakpoint to only free a bp's storage when no more
- references were extent. A cheaper bandaid was chosen. */
+ references were extent. A cheaper bandaid was chosen. */
if (bpt->type == bp_none)
return;
isn't actually running. target_enable_exception_callback for a
null target ops vector gives an undesirable error message, so we
check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
- exceptions are supported in this way, it's OK for now. FIXME */
+ exceptions are supported in this way, it's OK for now. FIXME */
if (ep_is_exception_catchpoint (bpt) && target_has_execution)
{
/* Format possible error msg */
struct breakpoint *b = (struct breakpoint *) bint;
struct value *mark;
int i;
+ int not_found;
+ int *not_found_ptr = NULL;
struct symtabs_and_lines sals;
char *s;
enum enable_state save_enable;
save_enable = b->enable_state;
if (b->enable_state != bp_shlib_disabled)
b->enable_state = bp_disabled;
+ else
+ /* If resetting a shlib-disabled breakpoint, we don't want to
+ see an error message if it is not found since we will expect
+ this to occur until the shared library is finally reloaded.
+ We accomplish this by giving decode_line_1 a pointer to use
+ for silent notification that the symbol is not found. */
+ not_found_ptr = ¬_found;
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, NULL);
+ sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL,
+ not_found_ptr);
for (i = 0; i < sals.nelts; i++)
{
resolve_sal_pc (&sals.sals[i]);
{
struct frame_id saved_frame_id;
- saved_frame_id = get_frame_id (get_selected_frame ());
+ saved_frame_id = get_frame_id (get_selected_frame (NULL));
if (bpt->exp_valid_block != NULL)
{
struct frame_info *fr =
/* The enable command enables the specified breakpoints (or all defined
breakpoints) so they once again become (or continue to be) effective
- in stopping the inferior. */
+ in stopping the inferior. */
static void
enable_command (char *args, int from_tty)
static struct cmd_list_element *breakpoint_show_cmdlist;
struct cmd_list_element *c;
+#ifdef SOLIB_ADD
+ observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
+#endif
+
breakpoint_chain = 0;
/* Don't bother to call set_breakpoint_count. $bpnum isn't useful
before a breakpoint is set. */
projects / deliverable / binutils-gdb.git / blobdiff