/* Everything about catch/throw catchpoints, for GDB.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "cp-support.h"
#include "location.h"
-/* Enums for exception-handling support. */
-enum exception_event_kind
-{
- EX_EVENT_THROW,
- EX_EVENT_RETHROW,
- EX_EVENT_CATCH
-};
-
/* Each spot where we may place an exception-related catchpoint has
two names: the SDT probe point and the function name. This
structure holds both. */
std::unique_ptr<compiled_regex> pattern;
};
+/* See breakpoint.h. */
+
+bool
+is_exception_catchpoint (breakpoint *bp)
+{
+ return bp->ops == &gnu_v3_exception_catchpoint_ops;
+}
+
\f
/* A helper function that fetches exception probe arguments. This
unsigned n_args;
pc_probe = find_probe_by_pc (pc);
- if (pc_probe.probe == NULL
- || strcmp (pc_probe.probe->provider, "libstdcxx") != 0
- || (strcmp (pc_probe.probe->name, "catch") != 0
- && strcmp (pc_probe.probe->name, "throw") != 0
- && strcmp (pc_probe.probe->name, "rethrow") != 0))
+ if (pc_probe.prob == NULL)
+ error (_("did not find exception probe (does libstdcxx have SDT probes?)"));
+
+ if (pc_probe.prob->get_provider () != "libstdcxx"
+ || (pc_probe.prob->get_name () != "catch"
+ && pc_probe.prob->get_name () != "throw"
+ && pc_probe.prob->get_name () != "rethrow"))
error (_("not stopped at a C++ exception catchpoint"));
- n_args = get_probe_argument_count (pc_probe.probe, frame);
+ n_args = pc_probe.prob->get_argument_count (get_frame_arch (frame));
if (n_args < 2)
error (_("C++ exception catchpoint has too few arguments"));
if (arg0 != NULL)
- *arg0 = evaluate_probe_argument (pc_probe.probe, 0, frame);
- *arg1 = evaluate_probe_argument (pc_probe.probe, 1, frame);
+ *arg0 = pc_probe.prob->evaluate_argument (0, frame);
+ *arg1 = pc_probe.prob->evaluate_argument (1, frame);
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
error (_("error computing probe argument at c++ exception catchpoint"));
if (self->pattern == NULL)
return;
- TRY
+ const char *name = nullptr;
+ gdb::unique_xmalloc_ptr<char> canon;
+ try
{
struct value *typeinfo_arg;
- std::string canon;
fetch_probe_arguments (NULL, &typeinfo_arg);
type_name = cplus_typename_from_type_info (typeinfo_arg);
canon = cp_canonicalize_string (type_name.c_str ());
- if (!canon.empty ())
- std::swap (type_name, canon);
+ name = (canon != nullptr
+ ? canon.get ()
+ : type_name.c_str ());
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
exception_print (gdb_stderr, e);
}
- END_CATCH
- if (!type_name.empty ())
+ if (name != nullptr)
{
- if (self->pattern->exec (type_name.c_str (), 0, NULL, 0) != 0)
+ if (self->pattern->exec (name, 0, NULL, 0) != 0)
bs->stop = 0;
}
}
struct program_space *filter_pspace = current_program_space;
/* We first try to use the probe interface. */
- TRY
+ try
{
event_location_up location
= new_probe_location (exception_functions[kind].probe);
sals = parse_probes (location.get (), filter_pspace, NULL);
}
- CATCH (e, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &e)
{
/* Using the probe interface failed. Let's fallback to the normal
catchpoint mode. */
- TRY
+ try
{
struct explicit_location explicit_loc;
sals = self->ops->decode_location (self, location.get (),
filter_pspace);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
/* NOT_FOUND_ERROR just means the breakpoint will be
pending, so let it through. */
if (ex.error != NOT_FOUND_ERROR)
- throw_exception (ex);
+ throw;
}
- END_CATCH
}
- END_CATCH
update_breakpoint_locations (self, filter_pspace, sals, {});
}
bp_temp = b->disposition == disp_del;
uiout->text (bp_temp ? "Temporary catchpoint "
: "Catchpoint ");
- if (!uiout->is_mi_like_p ())
- uiout->field_int ("bkptno", b->number);
+ uiout->field_signed ("bkptno", b->number);
uiout->text ((kind == EX_EVENT_THROW ? " (exception thrown), "
: (kind == EX_EVENT_CATCH ? " (exception caught), "
: " (exception rethrown), ")));
uiout->field_string ("reason",
async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
uiout->field_string ("disp", bpdisp_text (b->disposition));
- uiout->field_int ("bkptno", b->number);
}
return PRINT_SRC_AND_LOC;
}
enum exception_event_kind kind = classify_exception_breakpoint (b);
get_user_print_options (&opts);
+
if (opts.addressprint)
- {
- annotate_field (4);
- if (b->loc == NULL || b->loc->shlib_disabled)
- uiout->field_string ("addr", "<PENDING>");
- else
- uiout->field_core_addr ("addr",
- b->loc->gdbarch, b->loc->address);
- }
+ uiout->field_skip ("addr");
annotate_field (5);
- if (b->loc)
- *last_loc = b->loc;
switch (kind)
{
enum exception_event_kind kind = classify_exception_breakpoint (b);
bp_temp = b->disposition == disp_del;
- uiout->text (bp_temp ? _("Temporary catchpoint ")
- : _("Catchpoint "));
- uiout->field_int ("bkptno", b->number);
- uiout->text ((kind == EX_EVENT_THROW ? _(" (throw)")
- : (kind == EX_EVENT_CATCH ? _(" (catch)")
- : _(" (rethrow)"))));
+ uiout->message ("%s %d %s",
+ (bp_temp ? _("Temporary catchpoint ") : _("Catchpoint")),
+ b->number,
+ (kind == EX_EVENT_THROW
+ ? _("(throw)") : (kind == EX_EVENT_CATCH
+ ? _("(catch)") : _("(rethrow)"))));
}
/* Implement the "print_recreate" breakpoint_ops method for throw and
print_recreate_thread (b, fp);
}
+/* Implement the "allocate_location" breakpoint_ops method for throw
+ and catch catchpoints. */
+
+static bp_location *
+allocate_location_exception_catchpoint (breakpoint *self)
+{
+ return new bp_location (self, bp_loc_software_breakpoint);
+}
+
static void
handle_gnu_v3_exceptions (int tempflag, std::string &&except_rx,
const char *cond_string,
init_catchpoint (cp.get (), get_current_arch (), tempflag, cond_string,
&gnu_v3_exception_catchpoint_ops);
- /* We need to reset 'type' in order for code in breakpoint.c to do
- the right thing. */
- cp->type = bp_breakpoint;
cp->kind = ex_event;
cp->exception_rx = std::move (except_rx);
cp->pattern = std::move (pattern);
return std::string ();
}
-/* Deal with "catch catch", "catch throw", and "catch rethrow"
- commands. */
+/* See breakpoint.h. */
-static void
-catch_exception_command_1 (enum exception_event_kind ex_event,
- char *arg_entry,
- int tempflag, int from_tty)
+void
+catch_exception_event (enum exception_event_kind ex_event,
+ const char *arg, bool tempflag, int from_tty)
{
const char *cond_string = NULL;
- const char *arg = arg_entry;
if (!arg)
arg = "";
/* Implementation of "catch catch" command. */
static void
-catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
+catch_catch_command (const char *arg, int from_tty,
+ struct cmd_list_element *command)
{
- int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
- catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
+ catch_exception_event (EX_EVENT_CATCH, arg, tempflag, from_tty);
}
/* Implementation of "catch throw" command. */
static void
-catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
+catch_throw_command (const char *arg, int from_tty,
+ struct cmd_list_element *command)
{
- int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
- catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
+ catch_exception_event (EX_EVENT_THROW, arg, tempflag, from_tty);
}
/* Implementation of "catch rethrow" command. */
static void
-catch_rethrow_command (char *arg, int from_tty,
+catch_rethrow_command (const char *arg, int from_tty,
struct cmd_list_element *command)
{
- int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
+ bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
- catch_exception_command_1 (EX_EVENT_RETHROW, arg, tempflag, from_tty);
+ catch_exception_event (EX_EVENT_RETHROW, arg, tempflag, from_tty);
}
\f
ops->print_recreate = print_recreate_exception_catchpoint;
ops->print_one_detail = print_one_detail_exception_catchpoint;
ops->check_status = check_status_exception_catchpoint;
+ ops->allocate_location = allocate_location_exception_catchpoint;
}
+void _initialize_break_catch_throw ();
void
-_initialize_break_catch_throw (void)
+_initialize_break_catch_throw ()
{
initialize_throw_catchpoint_ops ();
projects / deliverable / binutils-gdb.git / blobdiff