--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os_cpu/windows_x86/bytes_windows_x86.inline.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1998, 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 OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP
+#define OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP
+
+#pragma warning(disable: 4035) // Disable warning 4035: no return value
+
+// Efficient swapping of data bytes from Java byte
+// ordering to native byte ordering and vice versa.
+inline u2 Bytes::swap_u2(u2 x) {
+#ifdef AMD64
+  address p = (address) &x;
+  return  ( (u2(p[0]) << 8 ) | ( u2(p[1])) );
+#else
+  __asm {
+    mov ax, x
+    xchg al, ah
+  }
+  // no return statement needed, result is already in ax
+  // compiler warning C4035 disabled via warning pragma
+#endif // AMD64
+}
+
+inline u4 Bytes::swap_u4(u4 x) {
+#ifdef AMD64
+  address p = (address) &x;
+  return ( (u4(p[0]) << 24) | (u4(p[1]) << 16) | (u4(p[2]) << 8) | u4(p[3])) ;
+#else
+  __asm {
+    mov eax, x
+    bswap eax
+  }
+  // no return statement needed, result is already in eax
+  // compiler warning C4035 disabled via warning pragma
+#endif // AMD64
+}
+
+#ifdef AMD64
+inline u8 Bytes::swap_u8(u8 x) {
+  address p = (address) &x;
+  return ( (u8(p[0]) << 56) | (u8(p[1]) << 48) | (u8(p[2]) << 40) | (u8(p[3]) << 32) |
+           (u8(p[4]) << 24) | (u8(p[5]) << 16) | (u8(p[6]) << 8)  | u8(p[7])) ;
+}
+
+#else
+// Helper function for swap_u8
+inline u8 Bytes::swap_u8_base(u4 x, u4 y) {
+  __asm {
+    mov eax, y
+    mov edx, x
+    bswap eax
+    bswap edx
+  }
+  // no return statement needed, result is already in edx:eax
+  // compiler warning C4035 disabled via warning pragma
+}
+
+inline u8 Bytes::swap_u8(u8 x) {
+  return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1));
+}
+#endif // AMD64
+
+#pragma warning(default: 4035) // Enable warning 4035: no return value
+
+#endif // OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP