--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/bytes_x86.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,70 @@
+/*
+ * Copyright 1997-2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class Bytes: AllStatic {
+ private:
+#ifndef AMD64
+  // Helper function for swap_u8
+  static inline u8   swap_u8_base(u4 x, u4 y);        // compiler-dependent implementation
+#endif // AMD64
+
+ 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]
+#include "incls/_bytes_pd.inline.hpp.incl"