1 files changed, 51 insertions, 0 deletions
diff --git a/libpthread/sysdeps/l4/pt-docancel.c b/libpthread/sysdeps/l4/pt-docancel.c
new file mode 100644
index 00000000..9a3bb26c
--- /dev/null
+++ b/libpthread/sysdeps/l4/pt-docancel.c
@@ -0,0 +1,51 @@
+/* Cancel a thread.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+static void
+call_exit (void)
+{
+  pthread_exit (0);
+}
+
+int
+__pthread_do_cancel (struct __pthread *p)
+{
+  assert (p->cancel_pending = 1);
+  assert (p->cancel_state == PTHREAD_CANCEL_ENABLE);
+
+  if (L4_SameThreads (L4_Myself (), p->threadid))
+    call_exit ();
+  else
+    {
+      L4_Word_t dummy;
+      L4_ThreadId_t dummy_id;
+
+      /* Change the ip of the target thread to make it exit.  */
+      L4_ExchangeRegisters (p->threadid, (1 << 4), 0, call_exit,
+			    0, 0, L4_nilthread,
+			    &dummy, &dummy, &dummy, &dummy, &dummy,
+			    &dummy_id);
+    }
+
+  return 0;
+}