1 files changed, 33 insertions, 0 deletions
diff --git a/sysdeps/s390/nptl/pthread_spin_trylock.c b/sysdeps/s390/nptl/pthread_spin_trylock.c
new file mode 100644
index 0000000000..6cfd05d5e0
--- /dev/null
+++ b/sysdeps/s390/nptl/pthread_spin_trylock.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_trylock (lock)
+     pthread_spinlock_t *lock;
+{
+  int old;
+
+  __asm __volatile ("cs %0,%3,%1"
+		    : "=d" (old), "=Q" (*lock)
+		    : "0" (0), "d" (1), "m" (*lock) : "cc" );
+
+  return old != 0 ? EBUSY : 0;
+}