int stop_after_trap;
-/* Nonzero means expecting a trap and caller will handle it themselves.
- It is used after attach, due to attaching to a process;
- when running in the shell before the child program has been exec'd;
- and when running some kinds of remote stuff (FIXME?). */
-
-enum stop_kind stop_soon;
-
-/* Nonzero if proceed is being used for a "finish" command or a similar
- situation when stop_registers should be saved. */
-
-int proceed_to_finish;
-
/* Save register contents here when about to pop a stack dummy frame,
if-and-only-if proceed_to_finish is set.
Thus this contains the return value from the called function (assuming
static void
follow_exec (ptid_t pid, char *execd_pathname)
{
- ptid_t saved_pid = pid;
struct target_ops *tgt;
struct thread_info *th = inferior_thread ();
inferior has essentially been killed & reborn. */
gdb_flush (gdb_stdout);
- generic_mourn_inferior ();
- /* Because mourn_inferior resets inferior_ptid. */
- inferior_ptid = saved_pid;
+
+ breakpoint_init_inferior (inf_execd);
if (gdb_sysroot && *gdb_sysroot)
{
static int
displaced_step_prepare (ptid_t ptid)
{
- struct cleanup *old_cleanups;
+ struct cleanup *old_cleanups, *ignore_cleanups;
struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
CORE_ADDR original, copy;
displaced_step_clear ();
+ old_cleanups = save_inferior_ptid ();
+ inferior_ptid = ptid;
+
original = regcache_read_pc (regcache);
copy = gdbarch_displaced_step_location (gdbarch);
/* Save the original contents of the copy area. */
displaced_step_saved_copy = xmalloc (len);
- old_cleanups = make_cleanup (free_current_contents,
- &displaced_step_saved_copy);
+ ignore_cleanups = make_cleanup (free_current_contents,
+ &displaced_step_saved_copy);
read_memory (copy, displaced_step_saved_copy, len);
if (debug_displaced)
{
};
closure = gdbarch_displaced_step_copy_insn (gdbarch,
- original, copy, regcache);
+ original, copy, regcache);
/* We don't support the fully-simulated case at present. */
gdb_assert (closure);
/* Resume execution at the copy. */
regcache_write_pc (regcache, copy);
- discard_cleanups (old_cleanups);
+ discard_cleanups (ignore_cleanups);
+
+ do_cleanups (old_cleanups);
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog, "displaced: displaced pc to 0x%s\n",
- paddr_nz (copy));
+ paddr_nz (copy));
/* Save the information we need to fix things up if the step
succeeds. */
do_cleanups (old_cleanups);
+ displaced_step_ptid = null_ptid;
+
/* Are there any pending displaced stepping requests? If so, run
one now. */
- if (displaced_step_request_queue)
+ while (displaced_step_request_queue)
{
struct displaced_step_request *head;
ptid_t ptid;
+ CORE_ADDR actual_pc;
head = displaced_step_request_queue;
ptid = head->ptid;
displaced_step_request_queue = head->next;
xfree (head);
- if (debug_displaced)
- fprintf_unfiltered (gdb_stdlog,
- "displaced: stepping queued %s now\n",
- target_pid_to_str (ptid));
+ context_switch (ptid);
+
+ actual_pc = read_pc ();
+
+ if (breakpoint_here_p (actual_pc))
+ {
+ if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog,
+ "displaced: stepping queued %s now\n",
+ target_pid_to_str (ptid));
+
+ displaced_step_prepare (ptid);
+
+ if (debug_displaced)
+ {
+ gdb_byte buf[4];
+
+ fprintf_unfiltered (gdb_stdlog, "displaced: run 0x%s: ",
+ paddr_nz (actual_pc));
+ read_memory (actual_pc, buf, sizeof (buf));
+ displaced_step_dump_bytes (gdb_stdlog, buf, sizeof (buf));
+ }
+
+ target_resume (ptid, 1, TARGET_SIGNAL_0);
+
+ /* Done, we're stepping a thread. */
+ break;
+ }
+ else
+ {
+ int step;
+ struct thread_info *tp = inferior_thread ();
+
+ /* The breakpoint we were sitting under has since been
+ removed. */
+ tp->trap_expected = 0;
+ /* Go back to what we were trying to do. */
+ step = currently_stepping (tp);
- displaced_step_ptid = null_ptid;
- displaced_step_prepare (ptid);
- target_resume (ptid, 1, TARGET_SIGNAL_0);
+ if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog, "breakpoint is gone %s: step(%d)\n",
+ target_pid_to_str (tp->ptid), step);
+
+ target_resume (ptid, step, TARGET_SIGNAL_0);
+ tp->stop_signal = TARGET_SIGNAL_0;
+
+ /* This request was discarded. See if there's any other
+ thread waiting for its turn. */
+ }
}
}
}
target_resume (resume_ptid, step, sig);
+
+ /* Avoid confusing the next resume, if the next stop/resume
+ happens to apply to another thread. */
+ tp->stop_signal = TARGET_SIGNAL_0;
}
discard_cleanups (old_cleanups);
{
if (!ptid_equal (inferior_ptid, null_ptid))
{
- struct thread_info *tp = inferior_thread ();
+ struct thread_info *tp;
+ struct inferior *inferior;
+
+ tp = inferior_thread ();
tp->trap_expected = 0;
tp->step_range_start = 0;
tp->step_range_end = 0;
tp->step_frame_id = null_frame_id;
tp->step_over_calls = STEP_OVER_UNDEBUGGABLE;
+
+ tp->stop_step = 0;
+
+ tp->proceed_to_finish = 0;
+
/* Discard any remaining commands or status from previous
stop. */
bpstat_clear (&tp->stop_bpstat);
+
+ inferior = current_inferior ();
+ inferior->stop_soon = NO_STOP_QUIETLY;
}
stop_after_trap = 0;
- stop_soon = NO_STOP_QUIETLY;
- proceed_to_finish = 0;
breakpoint_proceeded = 1; /* We're about to proceed... */
if (stop_registers)
struct thread_info *tp;
CORE_ADDR pc = regcache_read_pc (regcache);
int oneproc = 0;
+ enum target_signal stop_signal;
if (step > 0)
step_start_function = find_pc_function (pc);
if (! tp->trap_expected || use_displaced_stepping (gdbarch))
insert_breakpoints ();
+ if (!non_stop)
+ {
+ /* Pass the last stop signal to the thread we're resuming,
+ irrespective of whether the current thread is the thread that
+ got the last event or not. This was historically GDB's
+ behaviour before keeping a stop_signal per thread. */
+
+ struct thread_info *last_thread;
+ ptid_t last_ptid;
+ struct target_waitstatus last_status;
+
+ get_last_target_status (&last_ptid, &last_status);
+ if (!ptid_equal (inferior_ptid, last_ptid)
+ && !ptid_equal (last_ptid, null_ptid)
+ && !ptid_equal (last_ptid, minus_one_ptid))
+ {
+ last_thread = find_thread_pid (last_ptid);
+ if (last_thread)
+ {
+ tp->stop_signal = last_thread->stop_signal;
+ last_thread->stop_signal = TARGET_SIGNAL_0;
+ }
+ }
+ }
+
if (siggnal != TARGET_SIGNAL_DEFAULT)
- stop_signal = siggnal;
+ tp->stop_signal = siggnal;
/* If this signal should not be seen by program,
give it zero. Used for debugging signals. */
- else if (!signal_program[stop_signal])
- stop_signal = TARGET_SIGNAL_0;
+ else if (!signal_program[tp->stop_signal])
+ tp->stop_signal = TARGET_SIGNAL_0;
annotate_starting ();
init_infwait_state ();
/* Resume inferior. */
- resume (oneproc || step || bpstat_should_step (), stop_signal);
+ resume (oneproc || step || bpstat_should_step (), tp->stop_signal);
/* Wait for it to stop (if not standalone)
and in any case decode why it stopped, and act accordingly. */
void
start_remote (int from_tty)
{
+ struct inferior *inferior;
init_wait_for_inferior ();
- stop_soon = STOP_QUIETLY_REMOTE;
+
+ inferior = current_inferior ();
+ inferior->stop_soon = STOP_QUIETLY_REMOTE;
/* Always go on waiting for the target, regardless of the mode. */
/* FIXME: cagney/1999-09-23: At present it isn't possible to
breakpoint_init_inferior (inf_starting);
- /* Don't confuse first call to proceed(). */
- stop_signal = TARGET_SIGNAL_0;
-
/* The first resume is not following a fork/vfork/exec. */
pending_follow.kind = TARGET_WAITKIND_SPURIOUS; /* I.e., none. */
else
ecs->ptid = target_wait (waiton_ptid, &ecs->ws);
- ecs->event_thread = find_thread_pid (ecs->ptid);
-
if (treat_exec_as_sigtrap && ecs->ws.kind == TARGET_WAITKIND_EXECD)
{
xfree (ecs->ws.value.execd_pathname);
thread. */
context_switch (ecs->ptid);
- ecs->event_thread = find_thread_pid (ecs->ptid);
-
/* Now figure out what to do with the result of the result. */
handle_inferior_event (ecs);
if (!ecs->wait_some_more)
{
+ struct inferior *inf = find_inferior_pid (ptid_get_pid (ecs->ptid));
+
delete_step_thread_step_resume_breakpoint ();
- if (stop_soon == NO_STOP_QUIETLY)
+ /* We may not find an inferior if this was a process exit. */
+ if (inf == NULL || inf->stop_soon == NO_STOP_QUIETLY)
normal_stop ();
- if (step_multi && stop_step)
+ if (target_has_execution
+ && ecs->ws.kind != TARGET_WAITKIND_EXITED
+ && ecs->ws.kind != TARGET_WAITKIND_SIGNALLED
+ && ecs->event_thread->step_multi
+ && ecs->event_thread->stop_step)
inferior_event_handler (INF_EXEC_CONTINUE, NULL);
else
inferior_event_handler (INF_EXEC_COMPLETE, NULL);
target_last_wait_ptid = minus_one_ptid;
}
-/* Switch thread contexts, maintaining "infrun state". */
+/* Switch thread contexts. */
static void
context_switch (ptid_t ptid)
{
- /* Caution: it may happen that the new thread (or the old one!)
- is not in the thread list. In this case we must not attempt
- to "switch context", or we run the risk that our context may
- be lost. This may happen as a result of the target module
- mishandling thread creation. */
-
if (debug_infrun)
{
fprintf_unfiltered (gdb_stdlog, "infrun: Switching context from %s ",
target_pid_to_str (ptid));
}
- if (in_thread_list (inferior_ptid) && in_thread_list (ptid))
- { /* Perform infrun state context switch: */
- /* Save infrun state for the old thread. */
- save_infrun_state (inferior_ptid,
- cmd_continuation, intermediate_continuation,
- proceed_to_finish,
- stop_step,
- step_multi,
- stop_signal);
-
- /* Load infrun state for the new thread. */
- load_infrun_state (ptid,
- &cmd_continuation, &intermediate_continuation,
- &proceed_to_finish,
- &stop_step,
- &step_multi,
- &stop_signal);
- }
-
switch_to_thread (ptid);
}
-/* Context switch to thread PTID. */
-ptid_t
-context_switch_to (ptid_t ptid)
-{
- ptid_t current_ptid = inferior_ptid;
-
- /* Context switch to the new thread. */
- if (!ptid_equal (ptid, inferior_ptid))
- {
- context_switch (ptid);
- }
- return current_ptid;
-}
-
static void
adjust_pc_after_break (struct execution_control_state *ecs)
{
breakpoint_pc = regcache_read_pc (regcache)
- gdbarch_decr_pc_after_break (gdbarch);
- /* Check whether there actually is a software breakpoint inserted
- at that location. */
- if (software_breakpoint_inserted_here_p (breakpoint_pc))
+ /* Check whether there actually is a software breakpoint inserted at
+ that location.
+
+ If in non-stop mode, a race condition is possible where we've
+ removed a breakpoint, but stop events for that breakpoint were
+ already queued and arrive later. To suppress those spurious
+ SIGTRAPs, we keep a list of such breakpoint locations for a bit,
+ and retire them after a number of stop events are reported. */
+ if (software_breakpoint_inserted_here_p (breakpoint_pc)
+ || (non_stop && moribund_breakpoint_here_p (breakpoint_pc)))
{
/* When using hardware single-step, a SIGTRAP is reported for both
a completed single-step and a software breakpoint. Need to
int stopped_by_watchpoint;
int stepped_after_stopped_by_watchpoint = 0;
struct symtab_and_line stop_pc_sal;
+ enum stop_kind stop_soon;
- breakpoint_retire_moribund ();
+ if (ecs->ws.kind != TARGET_WAITKIND_EXITED
+ && ecs->ws.kind != TARGET_WAITKIND_SIGNALLED
+ && ecs->ws.kind != TARGET_WAITKIND_IGNORE)
+ {
+ struct inferior *inf = find_inferior_pid (ptid_get_pid (ecs->ptid));
+ gdb_assert (inf);
+ stop_soon = inf->stop_soon;
+ }
+ else
+ stop_soon = NO_STOP_QUIETLY;
/* Cache the last pid/waitstatus. */
target_last_wait_ptid = ecs->ptid;
/* Always clear state belonging to the previous time we stopped. */
stop_stack_dummy = 0;
- adjust_pc_after_break (ecs);
-
- reinit_frame_cache ();
-
/* If it's a new process, add it to the thread database */
ecs->new_thread_event = (!ptid_equal (ecs->ptid, inferior_ptid)
&& ecs->ws.kind != TARGET_WAITKIND_SIGNALLED && ecs->new_thread_event)
add_thread (ecs->ptid);
+ ecs->event_thread = find_thread_pid (ecs->ptid);
+
+ /* Dependent on valid ECS->EVENT_THREAD. */
+ adjust_pc_after_break (ecs);
+
+ /* Dependent on the current PC value modified by adjust_pc_after_break. */
+ reinit_frame_cache ();
+
if (ecs->ws.kind != TARGET_WAITKIND_IGNORE)
{
+ breakpoint_retire_moribund ();
+
/* Mark the non-executing threads accordingly. */
if (!non_stop
|| ecs->ws.kind == TARGET_WAITKIND_EXITED
/* Record the exit code in the convenience variable $_exitcode, so
that the user can inspect this again later. */
set_internalvar (lookup_internalvar ("_exitcode"),
- value_from_longest (builtin_type_int,
+ value_from_longest (builtin_type_int32,
(LONGEST) ecs->ws.value.integer));
gdb_flush (gdb_stdout);
target_mourn_inferior ();
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SIGNALLED\n");
stop_print_frame = 0;
- stop_signal = ecs->ws.value.sig;
target_terminal_ours (); /* Must do this before mourn anyway */
/* Note: By definition of TARGET_WAITKIND_SIGNALLED, we shouldn't
may be needed. */
target_mourn_inferior ();
- print_stop_reason (SIGNAL_EXITED, stop_signal);
+ print_stop_reason (SIGNAL_EXITED, ecs->ws.value.sig);
singlestep_breakpoints_inserted_p = 0;
stop_stepping (ecs);
return;
case TARGET_WAITKIND_VFORKED:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_FORKED\n");
- stop_signal = TARGET_SIGNAL_TRAP;
pending_follow.kind = ecs->ws.kind;
pending_follow.fork_event.parent_pid = ecs->ptid;
/* If no catchpoint triggered for this, then keep going. */
if (ecs->random_signal)
{
- stop_signal = TARGET_SIGNAL_0;
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
keep_going (ecs);
return;
}
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_TRAP;
goto process_event_stop_test;
case TARGET_WAITKIND_EXECD:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_EXECD\n");
- stop_signal = TARGET_SIGNAL_TRAP;
-
pending_follow.execd_pathname =
savestring (ecs->ws.value.execd_pathname,
strlen (ecs->ws.value.execd_pathname));
- /* This causes the eventpoints and symbol table to be reset. Must
- do this now, before trying to determine whether to stop. */
- follow_exec (inferior_ptid, pending_follow.execd_pathname);
- xfree (pending_follow.execd_pathname);
-
- stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid));
-
- {
- /* The breakpoints module may need to touch the inferior's
- memory. Switch to the (stopped) event ptid
- momentarily. */
- ptid_t saved_inferior_ptid = inferior_ptid;
- inferior_ptid = ecs->ptid;
-
- ecs->event_thread->stop_bpstat = bpstat_stop_status (stop_pc, ecs->ptid);
-
- ecs->random_signal = !bpstat_explains_signal (ecs->event_thread->stop_bpstat);
- inferior_ptid = saved_inferior_ptid;
- }
-
if (!ptid_equal (ecs->ptid, inferior_ptid))
{
context_switch (ecs->ptid);
reinit_frame_cache ();
}
+ stop_pc = read_pc ();
+
+ /* This causes the eventpoints and symbol table to be reset.
+ Must do this now, before trying to determine whether to
+ stop. */
+ follow_exec (inferior_ptid, pending_follow.execd_pathname);
+ xfree (pending_follow.execd_pathname);
+
+ ecs->event_thread->stop_bpstat = bpstat_stop_status (stop_pc, ecs->ptid);
+ ecs->random_signal = !bpstat_explains_signal (ecs->event_thread->stop_bpstat);
+
/* If no catchpoint triggered for this, then keep going. */
if (ecs->random_signal)
{
- stop_signal = TARGET_SIGNAL_0;
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
keep_going (ecs);
return;
}
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_TRAP;
goto process_event_stop_test;
/* Be careful not to try to gather much state about a thread
case TARGET_WAITKIND_STOPPED:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_STOPPED\n");
- stop_signal = ecs->ws.value.sig;
+ ecs->event_thread->stop_signal = ecs->ws.value.sig;
break;
/* We had an event in the inferior, but we are not interested
/* Do we need to clean up the state of a thread that has completed a
displaced single-step? (Doing so usually affects the PC, so do
it here, before we set stop_pc.) */
- displaced_step_fixup (ecs->ptid, stop_signal);
+ if (ecs->ws.kind == TARGET_WAITKIND_STOPPED)
+ displaced_step_fixup (ecs->ptid, ecs->event_thread->stop_signal);
stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid));
/* We've either finished single-stepping past the single-step
breakpoint, or stopped for some other reason. It would be nice if
we could tell, but we can't reliably. */
- if (stop_signal == TARGET_SIGNAL_TRAP)
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP)
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stepping_past_singlestep_breakpoint\n");
/* If we stopped for some other reason than single-stepping, ignore
the fact that we were supposed to switch back. */
- if (stop_signal == TARGET_SIGNAL_TRAP)
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP)
{
struct thread_info *tp;
another thread. If so, then step that thread past the breakpoint,
and continue it. */
- if (stop_signal == TARGET_SIGNAL_TRAP)
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP)
{
int thread_hop_needed = 0;
if (new_singlestep_pc != singlestep_pc)
{
+ enum target_signal stop_signal;
+
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: unexpected thread,"
" but expected thread advanced also\n");
singlestep_ptid. Don't swap here, since that's
the context we want to use. Just fudge our
state and continue. */
+ stop_signal = ecs->event_thread->stop_signal;
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
ecs->ptid = singlestep_ptid;
ecs->event_thread = find_thread_pid (ecs->ptid);
+ ecs->event_thread->stop_signal = stop_signal;
stop_pc = new_singlestep_pc;
}
else
+= gdbarch_deprecated_function_start_offset (current_gdbarch);
ecs->event_thread->stepping_over_breakpoint = 0;
bpstat_clear (&ecs->event_thread->stop_bpstat);
- stop_step = 0;
+ ecs->event_thread->stop_step = 0;
stop_print_frame = 1;
ecs->random_signal = 0;
stopped_by_random_signal = 0;
- if (stop_signal == TARGET_SIGNAL_TRAP
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP
&& ecs->event_thread->trap_expected
&& gdbarch_single_step_through_delay_p (current_gdbarch)
&& currently_stepping (ecs->event_thread))
If we're doing a displaced step past a breakpoint, then the
breakpoint is always inserted at the original instruction;
non-standard signals can't be explained by the breakpoint. */
- if (stop_signal == TARGET_SIGNAL_TRAP
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP
|| (! ecs->event_thread->trap_expected
&& breakpoint_inserted_here_p (stop_pc)
- && (stop_signal == TARGET_SIGNAL_ILL
- || stop_signal == TARGET_SIGNAL_SEGV
- || stop_signal == TARGET_SIGNAL_EMT))
+ && (ecs->event_thread->stop_signal == TARGET_SIGNAL_ILL
+ || ecs->event_thread->stop_signal == TARGET_SIGNAL_SEGV
+ || ecs->event_thread->stop_signal == TARGET_SIGNAL_EMT))
|| stop_soon == STOP_QUIETLY || stop_soon == STOP_QUIETLY_NO_SIGSTOP
|| stop_soon == STOP_QUIETLY_REMOTE)
{
- if (stop_signal == TARGET_SIGNAL_TRAP && stop_after_trap)
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP && stop_after_trap)
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stopped\n");
(e.g. gdbserver). We already rely on SIGTRAP being our
signal, so this is no exception. */
if (stop_soon == STOP_QUIETLY_NO_SIGSTOP
- && (stop_signal == TARGET_SIGNAL_STOP
- || stop_signal == TARGET_SIGNAL_TRAP))
+ && (ecs->event_thread->stop_signal == TARGET_SIGNAL_STOP
+ || ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP))
{
stop_stepping (ecs);
- stop_signal = TARGET_SIGNAL_0;
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
return;
}
another signal besides SIGTRAP, so check here as well as
above.''
- If someone ever tries to get get call dummys on a
+ If someone ever tries to get call dummys on a
non-executable stack to work (where the target would stop
with something like a SIGSEGV), then those tests might need
to be re-instated. Given, however, that the tests were only
be necessary for call dummies on a non-executable stack on
SPARC. */
- if (stop_signal == TARGET_SIGNAL_TRAP)
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP)
ecs->random_signal
= !(bpstat_explains_signal (ecs->event_thread->stop_bpstat)
|| ecs->event_thread->trap_expected
{
ecs->random_signal = !bpstat_explains_signal (ecs->event_thread->stop_bpstat);
if (!ecs->random_signal)
- stop_signal = TARGET_SIGNAL_TRAP;
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_TRAP;
}
}
int printed = 0;
if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "infrun: random signal %d\n", stop_signal);
+ fprintf_unfiltered (gdb_stdlog, "infrun: random signal %d\n",
+ ecs->event_thread->stop_signal);
stopped_by_random_signal = 1;
- if (signal_print[stop_signal])
+ if (signal_print[ecs->event_thread->stop_signal])
{
printed = 1;
target_terminal_ours_for_output ();
- print_stop_reason (SIGNAL_RECEIVED, stop_signal);
+ print_stop_reason (SIGNAL_RECEIVED, ecs->event_thread->stop_signal);
}
- if (signal_stop_state (stop_signal))
+ /* Always stop on signals if we're just gaining control of the
+ program. */
+ if (stop_soon != NO_STOP_QUIETLY
+ || signal_stop_state (ecs->event_thread->stop_signal))
{
stop_stepping (ecs);
return;
target_terminal_inferior ();
/* Clear the signal if it should not be passed. */
- if (signal_program[stop_signal] == 0)
- stop_signal = TARGET_SIGNAL_0;
+ if (signal_program[ecs->event_thread->stop_signal] == 0)
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
if (ecs->event_thread->prev_pc == read_pc ()
&& ecs->event_thread->trap_expected
}
if (ecs->event_thread->step_range_end != 0
- && stop_signal != TARGET_SIGNAL_0
+ && ecs->event_thread->stop_signal != TARGET_SIGNAL_0
&& (ecs->event_thread->step_range_start <= stop_pc
&& stop_pc < ecs->event_thread->step_range_end)
&& frame_id_eq (get_frame_id (get_current_frame ()),
gdb_assert (ecs->event_thread->step_resume_breakpoint != NULL);
delete_step_resume_breakpoint (ecs->event_thread);
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
/* Also, maybe we just did a "nexti" inside a prolog, so we
thought it was a subroutine call but it was not. Stop as
well. FENN */
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
if (real_stop_pc != 0)
ecs->stop_func_start = real_stop_pc;
- if (in_solib_dynsym_resolve_code (ecs->stop_func_start))
+ if (real_stop_pc != 0 && in_solib_dynsym_resolve_code (real_stop_pc))
{
struct symtab_and_line sr_sal;
init_sal (&sr_sal);
if (ecs->event_thread->step_over_calls == STEP_OVER_UNDEBUGGABLE
&& step_stop_if_no_debug)
{
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
/* If we have no line number and the step-stop-if-no-debug
is set, we stop the step so that the user has a chance to
switch in assembly mode. */
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
one instruction. */
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stepi/nexti\n");
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
or can this happen as a result of a return or longjmp?). */
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: no line number info\n");
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
better. */
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: stepped to a different line\n");
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
if (ecs->stop_func_start == stop_pc)
{
/* We are already there: stop now. */
- stop_step = 1;
+ ecs->event_thread->stop_step = 1;
print_stop_reason (END_STEPPING_RANGE, 0);
stop_stepping (ecs);
return;
/* If we did not do break;, it means we should keep running the
inferior and not return to debugger. */
- if (ecs->event_thread->trap_expected && stop_signal != TARGET_SIGNAL_TRAP)
+ if (ecs->event_thread->trap_expected
+ && ecs->event_thread->stop_signal != TARGET_SIGNAL_TRAP)
{
/* We took a signal (which we are supposed to pass through to
the inferior, else we'd not get here) and we haven't yet
gotten our trap. Simply continue. */
- resume (currently_stepping (ecs->event_thread), stop_signal);
+ resume (currently_stepping (ecs->event_thread),
+ ecs->event_thread->stop_signal);
}
else
{
simulator; the simulator then delivers the hardware
equivalent of a SIGNAL_TRAP to the program being debugged. */
- if (stop_signal == TARGET_SIGNAL_TRAP && !signal_program[stop_signal])
- stop_signal = TARGET_SIGNAL_0;
+ if (ecs->event_thread->stop_signal == TARGET_SIGNAL_TRAP
+ && !signal_program[ecs->event_thread->stop_signal])
+ ecs->event_thread->stop_signal = TARGET_SIGNAL_0;
-
- resume (currently_stepping (ecs->event_thread), stop_signal);
+ resume (currently_stepping (ecs->event_thread),
+ ecs->event_thread->stop_signal);
}
prepare_to_wait (ecs);
/* For now print nothing. */
/* Print a message only if not in the middle of doing a "step n"
operation for n > 1 */
- if (!step_multi || !stop_step)
+ if (!inferior_thread ()->step_multi
+ || !inferior_thread ()->stop_step)
if (ui_out_is_mi_like_p (uiout))
ui_out_field_string
(uiout, "reason",
/* Don't print a message if in the middle of doing a "step n"
operation for n > 1 */
- if (step_multi && stop_step)
+ if (target_has_execution
+ && last.kind != TARGET_WAITKIND_SIGNALLED
+ && last.kind != TARGET_WAITKIND_EXITED
+ && inferior_thread ()->step_multi
+ && inferior_thread ()->stop_step)
goto done;
target_terminal_ours ();
if (target_has_stack && !stop_stack_dummy)
set_current_sal_from_frame (get_current_frame (), 1);
- /* Look up the hook_stop and run it (CLI internally handles problem
- of stop_command's pre-hook not existing). */
- if (stop_command)
- catch_errors (hook_stop_stub, stop_command,
- "Error while running hook_stop:\n", RETURN_MASK_ALL);
-
if (!target_has_stack)
- {
+ goto done;
- goto done;
- }
+ if (last.kind == TARGET_WAITKIND_SIGNALLED
+ || last.kind == TARGET_WAITKIND_EXITED)
+ goto done;
/* Select innermost stack frame - i.e., current frame is frame 0,
and current location is based on that.
/* FIXME: cagney/2002-12-01: Given that a frame ID does
(or should) carry around the function and does (or
should) use that when doing a frame comparison. */
- if (stop_step
+ if (tp->stop_step
&& frame_id_eq (tp->step_frame_id,
get_frame_id (get_current_frame ()))
&& step_start_function == find_pc_function (stop_pc))
/* Save the function value return registers, if we care.
We might be about to restore their previous contents. */
- if (proceed_to_finish)
+ if (inferior_thread ()->proceed_to_finish)
{
/* This should not be necessary. */
if (stop_registers)
done:
annotate_stopped ();
- if (!suppress_stop_observer && !step_multi)
+ if (!suppress_stop_observer
+ && !(target_has_execution
+ && last.kind != TARGET_WAITKIND_SIGNALLED
+ && last.kind != TARGET_WAITKIND_EXITED
+ && inferior_thread ()->step_multi))
{
if (!ptid_equal (inferior_ptid, null_ptid))
observer_notify_normal_stop (inferior_thread ()->stop_bpstat);
else
set_running (inferior_ptid, 0);
}
+
+ /* Look up the hook_stop and run it (CLI internally handles problem
+ of stop_command's pre-hook not existing). */
+ if (stop_command)
+ catch_errors (hook_stop_stub, stop_command,
+ "Error while running hook_stop:\n", RETURN_MASK_ALL);
+
}
static int
int
signal_stop_state (int signo)
{
- /* Always stop on signals if we're just gaining control of the
- program. */
- return signal_stop[signo] || stop_soon != NO_STOP_QUIETLY;
+ return signal_stop[signo];
}
int
/* Break the command line up into args. */
- argv = buildargv (args);
- if (argv == NULL)
- {
- nomem (0);
- }
+ argv = gdb_buildargv (args);
old_chain = make_cleanup_freeargv (argv);
/* Walk through the args, looking for signal oursigs, signal names, and
char **argv;
struct cleanup *old_chain;
+ if (args == NULL)
+ error_no_arg (_("xdb command"));
+
/* Break the command line up into args. */
- argv = buildargv (args);
- if (argv == NULL)
- {
- nomem (0);
- }
+ argv = gdb_buildargv (args);
old_chain = make_cleanup_freeargv (argv);
if (argv[1] != (char *) NULL)
{
{
struct inferior_status *inf_status = XMALLOC (struct inferior_status);
struct thread_info *tp = inferior_thread ();
+ struct inferior *inf = current_inferior ();
- inf_status->stop_signal = stop_signal;
+ inf_status->stop_signal = tp->stop_signal;
inf_status->stop_pc = stop_pc;
- inf_status->stop_step = stop_step;
+ inf_status->stop_step = tp->stop_step;
inf_status->stop_stack_dummy = stop_stack_dummy;
inf_status->stopped_by_random_signal = stopped_by_random_signal;
inf_status->stepping_over_breakpoint = tp->trap_expected;
inf_status->step_frame_id = tp->step_frame_id;
inf_status->step_over_calls = tp->step_over_calls;
inf_status->stop_after_trap = stop_after_trap;
- inf_status->stop_soon = stop_soon;
+ inf_status->stop_soon = inf->stop_soon;
/* Save original bpstat chain here; replace it with copy of chain.
If caller's caller is walking the chain, they'll be happier if we
hand them back the original chain when restore_inferior_status is
tp->stop_bpstat = bpstat_copy (tp->stop_bpstat);
inf_status->breakpoint_proceeded = breakpoint_proceeded;
inf_status->restore_stack_info = restore_stack_info;
- inf_status->proceed_to_finish = proceed_to_finish;
+ inf_status->proceed_to_finish = tp->proceed_to_finish;
inf_status->registers = regcache_dup (get_current_regcache ());
restore_inferior_status (struct inferior_status *inf_status)
{
struct thread_info *tp = inferior_thread ();
+ struct inferior *inf = current_inferior ();
- stop_signal = inf_status->stop_signal;
+ tp->stop_signal = inf_status->stop_signal;
stop_pc = inf_status->stop_pc;
- stop_step = inf_status->stop_step;
+ tp->stop_step = inf_status->stop_step;
stop_stack_dummy = inf_status->stop_stack_dummy;
stopped_by_random_signal = inf_status->stopped_by_random_signal;
tp->trap_expected = inf_status->stepping_over_breakpoint;
tp->step_frame_id = inf_status->step_frame_id;
tp->step_over_calls = inf_status->step_over_calls;
stop_after_trap = inf_status->stop_after_trap;
- stop_soon = inf_status->stop_soon;
+ inf->stop_soon = inf_status->stop_soon;
bpstat_clear (&tp->stop_bpstat);
tp->stop_bpstat = inf_status->stop_bpstat;
breakpoint_proceeded = inf_status->breakpoint_proceeded;
- proceed_to_finish = inf_status->proceed_to_finish;
+ tp->proceed_to_finish = inf_status->proceed_to_finish;
/* The inferior can be gone if the user types "print exit(0)"
(and perhaps other times). */
projects / deliverable / binutils-gdb.git / blobdiff