Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 61 insertions, 0 deletions

diff --git a/gcc-4.9/libjava/sysdep/ia64/locks.h b/gcc-4.9/libjava/sysdep/ia64/locks.h
new file mode 100644
index 000000000..1a861b2e3
--- /dev/null
+++ b/gcc-4.9/libjava/sysdep/ia64/locks.h
@@ -0,0 +1,61 @@
+// 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__
+
+#include <ia64intrin.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) 
+{
+  return __sync_bool_compare_and_swap (addr, old, new_val);
+}
+
+// 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) 
+{
+  register unsigned long ar_ccv __asm__("ar.ccv") = old;
+  unsigned long out;
+  __asm__ __volatile__("cmpxchg8.rel %0=%1,%2,%4"
+	      : "=r"(out), "=m"(*addr)
+	      : "r"(new_val), "m"(*addr), "d"(ar_ccv) : "memory");
+  return (out == old);
+}
+
+inline static void
+read_barrier()
+{
+  __sync_synchronize ();
+}
+
+inline static void
+write_barrier()
+{
+  __sync_synchronize ();
+}
+
+#endif