1 files changed, 105 insertions, 0 deletions
diff --git a/libpthread/nptl_db/td_ta_event_getmsg.c b/libpthread/nptl_db/td_ta_event_getmsg.c
new file mode 100644
index 000000000..6e68ff4ff
--- /dev/null
+++ b/libpthread/nptl_db/td_ta_event_getmsg.c
@@ -0,0 +1,105 @@
+/* Retrieve event.
+   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 <string.h>
+
+#include "thread_dbP.h"
+
+
+td_err_e
+td_ta_event_getmsg (const td_thragent_t *ta_arg, td_event_msg_t *msg)
+{
+  td_thragent_t *const ta = (td_thragent_t *) ta_arg;
+  td_err_e err;
+  psaddr_t eventbuf, eventnum, eventdata;
+  psaddr_t thp, next;
+  void *copy;
+
+  /* XXX I cannot think of another way but using a static variable.  */
+  /* XXX Use at least __thread once it is possible.  */
+  static td_thrhandle_t th;
+
+  LOG ("td_thr_event_getmsg");
+
+  /* Test whether the TA parameter is ok.  */
+  if (! ta_ok (ta))
+    return TD_BADTA;
+
+  /* Get the pointer to the thread descriptor with the last event.  */
+  err = DB_GET_VALUE (thp, ta, __nptl_last_event, 0);
+  if (err != TD_OK)
+    return err;
+
+  if (thp == 0)
+    /* Nothing waiting.  */
+    return TD_NOMSG;
+
+  /* Copy the event message buffer in from the inferior.  */
+  err = DB_GET_FIELD_ADDRESS (eventbuf, ta, thp, pthread, eventbuf, 0);
+  if (err == TD_OK)
+    err = DB_GET_STRUCT (copy, ta, eventbuf, td_eventbuf_t);
+  if (err != TD_OK)
+    return err;
+
+  /* Read the event details from the target thread.  */
+  err = DB_GET_FIELD_LOCAL (eventnum, ta, copy, td_eventbuf_t, eventnum, 0);
+  if (err != TD_OK)
+    return err;
+  /* If the structure is on the list there better be an event recorded.  */
+  if ((int) (uintptr_t) eventnum == TD_EVENT_NONE)
+    return TD_DBERR;
+
+  /* Fill the user's data structure.  */
+  err = DB_GET_FIELD_LOCAL (eventdata, ta, copy, td_eventbuf_t, eventdata, 0);
+  if (err != TD_OK)
+    return err;
+
+  /* Generate the thread descriptor.  */
+  th.th_ta_p = (td_thragent_t *) ta;
+  th.th_unique = thp;
+
+  /* Fill the user's data structure.  */
+  msg->msg.data = (uintptr_t) eventdata;
+  msg->event = (uintptr_t) eventnum;
+  msg->th_p = &th;
+
+  /* And clear the event message in the target.  */
+  memset (copy, 0, ta->ta_sizeof_td_eventbuf_t);
+  err = DB_PUT_STRUCT (ta, eventbuf, td_eventbuf_t, copy);
+  if (err != TD_OK)
+    return err;
+
+  /* Get the pointer to the next descriptor with an event.  */
+  err = DB_GET_FIELD (next, ta, thp, pthread, nextevent, 0);
+  if (err != TD_OK)
+    return err;
+
+  /* Store the pointer in the list head variable.  */
+  err = DB_PUT_VALUE (ta, __nptl_last_event, 0, next);
+  if (err != TD_OK)
+    return err;
+
+  if (next != 0)
+    /* Clear the next pointer in the current descriptor.  */
+    err = DB_PUT_FIELD (ta, thp, pthread, nextevent, 0, 0);
+
+  return err;
+}