1 files changed, 64 insertions, 22 deletions

diff --git a/gdb/thread.c b/gdb/thread.c
index a66a2b5..13449a8 100644
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -1923,7 +1923,7 @@ thread_apply_command (char *tidlist, int from_tty)
 void
 thread_command (char *tidstr, int from_tty)
 {
-  if (!tidstr)
+  if (tidstr == NULL)
     {
       if (ptid_equal (inferior_ptid, null_ptid))
 	error (_("No thread selected"));
@@ -1943,10 +1943,31 @@ thread_command (char *tidstr, int from_tty)
 	}
       else
 	error (_("No stack."));
-      return;
     }
+  else
+    {
+      ptid_t previous_ptid = inferior_ptid;
+      enum gdb_rc result;
+
+      result = gdb_thread_select (current_uiout, tidstr, NULL);
+
+      /* If thread switch did not succeed don't notify or print.  */
+      if (result == GDB_RC_FAIL)
+	return;
 
-  gdb_thread_select (current_uiout, tidstr, NULL);
+      /* Print if the thread has not changed, otherwise an event will be sent.  */
+      if (ptid_equal (inferior_ptid, previous_ptid))
+	{
+	  print_selected_thread_frame (current_uiout,
+				       USER_SELECTED_THREAD
+				       | USER_SELECTED_FRAME);
+	}
+      else
+	{
+	  observer_notify_user_selected_context_changed (USER_SELECTED_THREAD
+							 | USER_SELECTED_FRAME);
+	}
+    }
 }
 
 /* Implementation of `thread name'.  */
@@ -2058,32 +2079,53 @@ do_captured_thread_select (struct ui_out *uiout, void *tidstr_v)
 
   annotate_thread_changed ();
 
-  if (ui_out_is_mi_like_p (uiout))
-    ui_out_field_int (uiout, "new-thread-id", inferior_thread ()->global_num);
-  else
+  /* Since the current thread may have changed, see if there is any
+     exited thread we can now delete.  */
+  prune_threads ();
+
+  return GDB_RC_OK;
+}
+
+/* Print thread and frame switch command response.  */
+
+void
+print_selected_thread_frame (struct ui_out *uiout,
+			     user_selected_what selection)
+{
+  struct thread_info *tp = inferior_thread ();
+  struct inferior *inf = current_inferior ();
+
+  if (selection & USER_SELECTED_THREAD)
     {
-      ui_out_text (uiout, "[Switching to thread ");
-      ui_out_field_string (uiout, "new-thread-id", print_thread_id (tp));
-      ui_out_text (uiout, " (");
-      ui_out_text (uiout, target_pid_to_str (inferior_ptid));
-      ui_out_text (uiout, ")]");
+      if (ui_out_is_mi_like_p (uiout))
+	{
+	  ui_out_field_int (uiout, "new-thread-id",
+			    inferior_thread ()->global_num);
+	}
+      else
+	{
+	  ui_out_text (uiout, "[Switching to thread ");
+	  ui_out_field_string (uiout, "new-thread-id", print_thread_id (tp));
+	  ui_out_text (uiout, " (");
+	  ui_out_text (uiout, target_pid_to_str (inferior_ptid));
+	  ui_out_text (uiout, ")]");
+	}
     }
 
-  /* Note that we can't reach this with an exited thread, due to the
-     thread_alive check above.  */
   if (tp->state == THREAD_RUNNING)
-    ui_out_text (uiout, "(running)\n");
-  else
     {
-      ui_out_text (uiout, "\n");
-      print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
+      if (selection & USER_SELECTED_THREAD)
+	ui_out_text (uiout, "(running)\n");
     }
+  else if (selection & USER_SELECTED_FRAME)
+    {
+      if (selection & USER_SELECTED_THREAD)
+	ui_out_text (uiout, "\n");
 
-  /* Since the current thread may have changed, see if there is any
-     exited thread we can now delete.  */
-  prune_threads ();
-
-  return GDB_RC_OK;
+      if (has_stack_frames ())
+	print_stack_frame_to_uiout (uiout, get_selected_frame (NULL),
+				    1, SRC_AND_LOC, 1);
+    }
 }
 
 enum gdb_rc