old_chain = make_cleanup_restore_current_thread ();
- switch_to_thread (info->ptid);
-
/* Go through handle_inferior_event/normal_stop, so we always
have consistent output as if the stop event had been
reported. */
old_chain_2 = make_cleanup (finish_thread_state_cleanup,
&minus_one_ptid);
- /* In non-stop mode, each thread is handled individually.
- Switch early, so the global state is set correctly for this
- thread. */
- if (non_stop
- && ecs->ws.kind != TARGET_WAITKIND_EXITED
- && ecs->ws.kind != TARGET_WAITKIND_SIGNALLED)
- context_switch (ecs->ptid);
-
/* Now figure out what to do with the result of the result. */
handle_inferior_event (ecs);
if (debug_infrun)
print_target_wait_results (waiton_ptid, ecs->ptid, &ecs->ws);
- if (non_stop
- && ecs->ws.kind != TARGET_WAITKIND_IGNORE
- && ecs->ws.kind != TARGET_WAITKIND_NO_RESUMED
- && ecs->ws.kind != TARGET_WAITKIND_EXITED
- && ecs->ws.kind != TARGET_WAITKIND_SIGNALLED)
- /* In non-stop mode, each thread is handled individually. Switch
- early, so the global state is set correctly for this
- thread. */
- context_switch (ecs->ptid);
-
/* If an error happens while handling the event, propagate GDB's
knowledge of the executing state to the frontend/user running
state. */
we're attaching or setting up a remote connection. */
if (stop_soon == STOP_QUIETLY || stop_soon == NO_STOP_QUIETLY)
{
+ if (!ptid_equal (ecs->ptid, inferior_ptid))
+ context_switch (ecs->ptid);
+
/* Loading of shared libraries might have changed breakpoint
addresses. Make sure new breakpoints are inserted. */
if (stop_soon == NO_STOP_QUIETLY
case TARGET_WAITKIND_SPURIOUS:
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SPURIOUS\n");
+ if (!ptid_equal (ecs->ptid, inferior_ptid)
+ && !ptid_equal (ecs->ptid, minus_one_ptid))
+ context_switch (ecs->ptid);
resume (0, GDB_SIGNAL_0);
prepare_to_wait (ecs);
return;
"infrun: stepping_past_"
"singlestep_breakpoint\n");
/* Pull the single step breakpoints out of the target. */
+ if (!ptid_equal (ecs->ptid, inferior_ptid))
+ context_switch (ecs->ptid);
remove_single_step_breakpoints ();
singlestep_breakpoints_inserted_p = 0;
/* Pull the single step breakpoints out of the target. */
if (singlestep_breakpoints_inserted_p)
{
+ if (!ptid_equal (ecs->ptid, inferior_ptid))
+ context_switch (ecs->ptid);
remove_single_step_breakpoints ();
singlestep_breakpoints_inserted_p = 0;
}
skip_inline_frames call would break things. Fortunately
that's an extremely unlikely scenario. */
if (!pc_at_non_inline_function (aspace, stop_pc, &ecs->ws)
- && !(ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP
- && ecs->event_thread->control.trap_expected
- && pc_at_non_inline_function (aspace,
- ecs->event_thread->prev_pc,
+ && !(ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP
+ && ecs->event_thread->control.trap_expected
+ && pc_at_non_inline_function (aspace,
+ ecs->event_thread->prev_pc,
&ecs->ws)))
- skip_inline_frames (ecs->ptid);
+ {
+ skip_inline_frames (ecs->ptid);
+
+ /* Re-fetch current thread's frame in case that invalidated
+ the frame cache. */
+ frame = get_current_frame ();
+ gdbarch = get_frame_arch (frame);
+ }
}
if (ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP
return;
}
- /* We're going to replace the current step-resume breakpoint
- with a longjmp-resume breakpoint. */
- delete_step_resume_breakpoint (ecs->event_thread);
-
/* Insert a breakpoint at resume address. */
insert_longjmp_resume_breakpoint (gdbarch, jmp_buf_pc);
}
return;
case BPSTAT_WHAT_CLEAR_LONGJMP_RESUME:
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog,
- "infrun: BPSTAT_WHAT_CLEAR_LONGJMP_RESUME\n");
+ {
+ struct frame_info *init_frame;
- if (what.is_longjmp)
- {
- gdb_assert (ecs->event_thread->control.step_resume_breakpoint
- != NULL);
- delete_step_resume_breakpoint (ecs->event_thread);
- }
- else
- {
- /* There are several cases to consider.
+ /* There are several cases to consider.
- 1. The initiating frame no longer exists. In this case
- we must stop, because the exception has gone too far.
+ 1. The initiating frame no longer exists. In this case
+ we must stop, because the exception or longjmp has gone
+ too far.
- 2. The initiating frame exists, and is the same as the
- current frame. We stop, because the exception has been
- caught.
+ 2. The initiating frame exists, and is the same as the
+ current frame. We stop, because the exception or longjmp
+ has been caught.
- 3. The initiating frame exists and is different from
- the current frame. This means the exception has been
- caught beneath the initiating frame, so keep going. */
- struct frame_info *init_frame
- = frame_find_by_id (ecs->event_thread->initiating_frame);
+ 3. The initiating frame exists and is different from the
+ current frame. This means the exception or longjmp has
+ been caught beneath the initiating frame, so keep
+ going.
- gdb_assert (ecs->event_thread->control.exception_resume_breakpoint
- != NULL);
- delete_exception_resume_breakpoint (ecs->event_thread);
+ 4. longjmp breakpoint has been placed just to protect
+ against stale dummy frames and user is not interested in
+ stopping around longjmps. */
- if (init_frame)
- {
- struct frame_id current_id
- = get_frame_id (get_current_frame ());
- if (frame_id_eq (current_id,
- ecs->event_thread->initiating_frame))
- {
- /* Case 2. Fall through. */
- }
- else
- {
- /* Case 3. */
- keep_going (ecs);
- return;
- }
- }
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: BPSTAT_WHAT_CLEAR_LONGJMP_RESUME\n");
- /* For Cases 1 and 2, remove the step-resume breakpoint,
- if it exists. */
- delete_step_resume_breakpoint (ecs->event_thread);
- }
+ gdb_assert (ecs->event_thread->control.exception_resume_breakpoint
+ != NULL);
+ delete_exception_resume_breakpoint (ecs->event_thread);
- ecs->event_thread->control.stop_step = 1;
- print_end_stepping_range_reason ();
- stop_stepping (ecs);
+ if (what.is_longjmp)
+ {
+ check_longjmp_breakpoint_for_call_dummy (ecs->event_thread->num);
+
+ if (!frame_id_p (ecs->event_thread->initiating_frame))
+ {
+ /* Case 4. */
+ keep_going (ecs);
+ return;
+ }
+ }
+
+ init_frame = frame_find_by_id (ecs->event_thread->initiating_frame);
+
+ if (init_frame)
+ {
+ struct frame_id current_id
+ = get_frame_id (get_current_frame ());
+ if (frame_id_eq (current_id,
+ ecs->event_thread->initiating_frame))
+ {
+ /* Case 2. Fall through. */
+ }
+ else
+ {
+ /* Case 3. */
+ keep_going (ecs);
+ return;
+ }
+ }
+
+ /* For Cases 1 and 2, remove the step-resume breakpoint,
+ if it exists. */
+ delete_step_resume_breakpoint (ecs->event_thread);
+
+ ecs->event_thread->control.stop_step = 1;
+ print_end_stepping_range_reason ();
+ stop_stepping (ecs);
+ }
return;
case BPSTAT_WHAT_SINGLE:
static void
insert_longjmp_resume_breakpoint (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- /* There should never be more than one step-resume or longjmp-resume
- breakpoint per thread, so we should never be setting a new
+ /* There should never be more than one longjmp-resume breakpoint per
+ thread, so we should never be setting a new
longjmp_resume_breakpoint when one is already active. */
- gdb_assert (inferior_thread ()->control.step_resume_breakpoint == NULL);
+ gdb_assert (inferior_thread ()->control.exception_resume_breakpoint == NULL);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: inserting longjmp-resume breakpoint at %s\n",
paddress (gdbarch, pc));
- inferior_thread ()->control.step_resume_breakpoint =
+ inferior_thread ()->control.exception_resume_breakpoint =
set_momentary_breakpoint_at_pc (gdbarch, pc, bp_longjmp_resume);
}
struct infcall_suspend_state
{
struct thread_suspend_state thread_suspend;
+#if 0 /* Currently unused and empty structures are not valid C. */
struct inferior_suspend_state inferior_suspend;
+#endif
/* Other fields: */
CORE_ADDR stop_pc;
}
inf_state->thread_suspend = tp->suspend;
+#if 0 /* Currently unused and empty structures are not valid C. */
inf_state->inferior_suspend = inf->suspend;
+#endif
/* run_inferior_call will not use the signal due to its `proceed' call with
GDB_SIGNAL_0 anyway. */
struct gdbarch *gdbarch = get_regcache_arch (regcache);
tp->suspend = inf_state->thread_suspend;
+#if 0 /* Currently unused and empty structures are not valid C. */
inf->suspend = inf_state->inferior_suspend;
+#endif
stop_pc = inf_state->stop_pc;
projects / deliverable / binutils-gdb.git / blobdiff