1 files changed, 37 insertions, 0 deletions
diff --git a/ports/sysdeps/hppa/nptl/pthread_spin_lock.c b/ports/sysdeps/hppa/nptl/pthread_spin_lock.c
new file mode 100644
index 0000000000..bcf22408da
--- /dev/null
+++ b/ports/sysdeps/hppa/nptl/pthread_spin_lock.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 2005 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 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 <atomic.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_lock (pthread_spinlock_t *lock)
+{
+#if 0
+  volatile unsigned int *addr = __ldcw_align (lock);
+
+  while (__ldcw (addr) == 0)
+    while (*addr == 0) ;
+
+  return 0;
+#endif
+
+  while (atomic_compare_and_exchange_val_acq(lock, 1, 0) == 1)
+    while (*lock == 1);
+  
+  return 0;
+}