1 files changed, 77 insertions, 0 deletions
diff --git a/libpthread/nptl_db/td_thr_clear_event.c b/libpthread/nptl_db/td_thr_clear_event.c
new file mode 100644
index 000000000..c43c625a4
--- /dev/null
+++ b/libpthread/nptl_db/td_thr_clear_event.c
@@ -0,0 +1,77 @@
+/* Disable specific event for thread.
+   Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stddef.h>
+
+#include "thread_dbP.h"
+
+
+td_err_e
+td_thr_clear_event (th, event)
+     const td_thrhandle_t *th;
+     td_thr_events_t *event;
+{
+  td_err_e err;
+  psaddr_t eventmask;
+  void *copy = NULL;
+
+  LOG ("td_thr_clear_event");
+
+  /* Fetch the old event mask from the inferior and modify it in place.  */
+  err = DB_GET_FIELD_ADDRESS (eventmask, th->th_ta_p,
+			      th->th_unique, pthread, eventbuf_eventmask, 0);
+  if (err == TD_OK)
+    err = DB_GET_STRUCT (copy, th->th_ta_p, eventmask, td_thr_events_t);
+  if (err == TD_OK)
+    {
+      uint32_t idx;
+      for (idx = 0; idx < TD_EVENTSIZE; ++idx)
+	{
+	  psaddr_t word;
+	  uint32_t mask;
+	  err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy,
+				    td_thr_events_t, event_bits, idx);
+	  if (err != TD_OK)
+	    break;
+	  mask = (uintptr_t) word;
+	  mask &= ~event->event_bits[idx];
+	  word = (psaddr_t) (uintptr_t) mask;
+	  err = DB_PUT_FIELD_LOCAL (th->th_ta_p, copy,
+				    td_thr_events_t, event_bits, idx, word);
+	  if (err != TD_OK)
+	    break;
+	}
+      if (err == TD_NOAPLIC)
+	{
+	  err = TD_OK;
+	  while (idx < TD_EVENTSIZE)
+	    if (event->event_bits[idx++] != 0)
+	      {
+		err = TD_NOEVENT;
+		break;
+	      }
+	}
+      if (err == TD_OK)
+	/* Now write it back to the inferior.  */
+	err = DB_PUT_STRUCT (th->th_ta_p, eventmask, td_thr_events_t, copy);
+    }
+
+  return err;
+}