locks.h (read_barrier): New.

	* sysdep/sh/locks.h (read_barrier): New.
	(write_barrier): Likewise.

From-SVN: r120735

libjava/ChangeLog

+2007-01-12  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	* sysdep/sh/locks.h (read_barrier): New.
+	(write_barrier): Likewise.
+
 2007-01-12  Andrew Haley  <aph@redhat.com>
 
 	* include/i386-signal.h: Rewrite to use rt_sigaction.

libjava/sysdep/sh/locks.h

 // locks.h - Thread synchronization primitives. SuperH implementation.
 
-/* Copyright (C) 2002  Free Software Foundation
+/* Copyright (C) 2002, 2007  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -69,4 +69,16 @@ compare_and_swap_release (volatile obj_addr_t *addr, obj_addr_t old,
   return compare_and_swap (addr, old, new_val);
 }
 
+inline static void
+read_barrier()
+{
+  __asm__ __volatile__(" " : : : "memory");
+}
+
+inline static void
+write_barrier()
+{
+  __asm__ __volatile__(" " : : : "memory");
+}
+
 #endif /* ! __SYSDEP_LOCKS_H__ */