--- /dev/null	2021-01-19 17:38:25.908523431 +0000
+++ new/src/cpu/aarch64/vm/bytes_aarch64.hpp	2021-01-25 19:31:28.566390602 +0000
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2013, Red Hat Inc.
+ * Copyright (c) 1997, 2010, Oracle and/or its affiliates.
+ * All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef CPU_AARCH64_VM_BYTES_AARCH64_HPP
+#define CPU_AARCH64_VM_BYTES_AARCH64_HPP
+
+#include "memory/allocation.hpp"
+
+class Bytes: AllStatic {
+ public:
+  // Returns true if the byte ordering used by Java is different from the native byte ordering
+  // of the underlying machine. For example, this is true for Intel x86, but false for Solaris
+  // on Sparc.
+  static inline bool is_Java_byte_ordering_different(){ return true; }
+
+
+  // Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering
+  // (no special code is needed since x86 CPUs can access unaligned data)
+  static inline u2   get_native_u2(address p)         { return *(u2*)p; }
+  static inline u4   get_native_u4(address p)         { return *(u4*)p; }
+  static inline u8   get_native_u8(address p)         { return *(u8*)p; }
+
+  static inline void put_native_u2(address p, u2 x)   { *(u2*)p = x; }
+  static inline void put_native_u4(address p, u4 x)   { *(u4*)p = x; }
+  static inline void put_native_u8(address p, u8 x)   { *(u8*)p = x; }
+
+
+  // Efficient reading and writing of unaligned unsigned data in Java
+  // byte ordering (i.e. big-endian ordering). Byte-order reversal is
+  // needed since x86 CPUs use little-endian format.
+  static inline u2   get_Java_u2(address p)           { return swap_u2(get_native_u2(p)); }
+  static inline u4   get_Java_u4(address p)           { return swap_u4(get_native_u4(p)); }
+  static inline u8   get_Java_u8(address p)           { return swap_u8(get_native_u8(p)); }
+
+  static inline void put_Java_u2(address p, u2 x)     { put_native_u2(p, swap_u2(x)); }
+  static inline void put_Java_u4(address p, u4 x)     { put_native_u4(p, swap_u4(x)); }
+  static inline void put_Java_u8(address p, u8 x)     { put_native_u8(p, swap_u8(x)); }
+
+
+  // Efficient swapping of byte ordering
+  static inline u2   swap_u2(u2 x);                   // compiler-dependent implementation
+  static inline u4   swap_u4(u4 x);                   // compiler-dependent implementation
+  static inline u8   swap_u8(u8 x);
+};
+
+
+// The following header contains the implementations of swap_u2, swap_u4, and swap_u8[_base]
+
+#ifdef TARGET_OS_ARCH_linux_aarch64
+# include "bytes_linux_aarch64.inline.hpp"
+#endif
+
+#endif // CPU_AARCH64_VM_BYTES_AARCH64_HPP