1 files changed, 34 insertions, 0 deletions
diff --git a/nptl/sysdeps/s390/pthread_spin_lock.c b/nptl/sysdeps/s390/pthread_spin_lock.c
new file mode 100644
index 0000000000..7d0067b0e9
--- /dev/null
+++ b/nptl/sysdeps/s390/pthread_spin_lock.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2003 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "pthreadP.h"
+
+int
+pthread_spin_lock (lock)
+     pthread_spinlock_t *lock;
+{
+  unsigned long int oldval;
+
+  __asm __volatile ("0: lhi %0,0\n"
+		    "   cs  %0,%2,%1\n"
+		    "   jl  0b"
+		    : "=d" (oldval), "=Q" (*lock)
+		    : "d" (1), "m" (*lock) : "cc" );
+  return 0;
+}