1 files changed, 50 insertions, 0 deletions
diff --git a/libjava/sysdep/ia64/locks.h b/libjava/sysdep/ia64/locks.h
new file mode 100644
index 00000000000..6edee83ea99
--- /dev/null
+++ b/libjava/sysdep/ia64/locks.h
@@ -0,0 +1,50 @@
+// locks.h - Thread synchronization primitives. IA64 implementation.
+
+/* Copyright (C) 2002  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#ifndef __SYSDEP_LOCKS_H__
+#define __SYSDEP_LOCKS_H__
+
+typedef size_t obj_addr_t;	/* Integer type big enough for object	*/
+				/* address.				*/
+
+inline static bool
+compare_and_swap(volatile obj_addr_t *addr,
+	 				      obj_addr_t old,
+					      obj_addr_t new_val) 
+{
+  unsigned long oldval;
+  __asm__ __volatile__("mov ar.ccv=%4 ;; cmpxchg8.acq %0=%1,%2,ar.ccv"
+	      : "=r"(oldval), "=m"(*addr)
+	      : "r"(new_val), "1"(*addr), "r"(old) : "memory");
+  return (oldval == old);
+}
+
+// The fact that *addr is volatile should cause the compiler to
+// automatically generate an st8.rel.
+inline static void
+release_set(volatile obj_addr_t *addr, obj_addr_t new_val)
+{
+  __asm__ __volatile__(" " : : : "memory");
+  *(addr) = new_val;
+}
+
+inline static bool
+compare_and_swap_release(volatile obj_addr_t *addr,
+	 				             obj_addr_t old,
+						     obj_addr_t new_val) 
+{
+  unsigned long oldval;
+  __asm__ __volatile__("mov ar.ccv=%4 ;; cmpxchg8.rel %0=%1,%2,ar.ccv"
+	      : "=r"(oldval), "=m"(*addr)
+	      : "r"(new_val), "1"(*addr), "r"(old) : "memory");
+  return (oldval == old);
+}
+
+#endif