--- /dev/null	2009-10-08 09:48:12.966002103 +0100
+++ new/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.hpp	2009-10-08 17:31:06.000000000 +0100
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2002 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2007, 2008 Red Hat, Inc.
+ * 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.
+ *
+ */
+
+// Platform specific for C++ based Interpreter
+
+#if defined(PPC) || defined(SPARC) || defined(IA64)
+#define LOTS_OF_REGS   // Use plenty of registers
+#else
+#undef LOTS_OF_REGS    // Loser platforms
+#endif
+
+ private:
+  interpreterState _self_link;
+
+ public:
+  inline void set_locals(intptr_t* new_locals) {
+    _locals = new_locals;
+  }
+  inline void set_method(methodOop new_method) {
+    _method = new_method;
+  }
+  inline interpreterState self_link() {
+    return _self_link;
+  }
+  inline void set_self_link(interpreterState new_self_link) {
+    _self_link = new_self_link;
+  }
+  inline interpreterState prev_link() {
+    return _prev_link;
+  }
+  inline void set_prev_link(interpreterState new_prev_link) {
+    _prev_link = new_prev_link;
+  }
+  inline void set_stack_limit(intptr_t* new_stack_limit) {
+    _stack_limit = new_stack_limit;
+  }
+  inline void set_stack_base(intptr_t* new_stack_base) {
+    _stack_base = new_stack_base;
+  }
+  inline void set_monitor_base(BasicObjectLock *new_monitor_base) {
+    _monitor_base = new_monitor_base;
+  }
+  inline void set_thread(JavaThread* new_thread) {
+    _thread = new_thread;
+  }
+  inline void set_constants(constantPoolCacheOop new_constants) {
+    _constants = new_constants;
+  }
+  inline oop oop_temp() {
+    return _oop_temp;
+  }
+  inline oop *oop_temp_addr() {
+    return &_oop_temp;
+  }
+  inline void set_oop_temp(oop new_oop_temp) {
+    _oop_temp = new_oop_temp;
+  }
+  inline address callee_entry_point() {
+    return _result._to_call._callee_entry_point;
+  }
+  inline address osr_buf() {
+    return _result._osr._osr_buf;
+  }
+  inline address osr_entry() {
+    return _result._osr._osr_entry;
+  }
+
+ public:
+  const char *name_of_field_at_address(address addr);
+
+// The frame manager handles this
+#define SET_LAST_JAVA_FRAME()
+#define RESET_LAST_JAVA_FRAME()
+
+// ZeroStack Implementation
+
+#undef STACK_INT
+#undef STACK_FLOAT
+#undef STACK_ADDR
+#undef STACK_OBJECT
+#undef STACK_DOUBLE
+#undef STACK_LONG
+
+#define GET_STACK_SLOT(offset)    (*((intptr_t*) &topOfStack[-(offset)]))
+#define STACK_SLOT(offset)    ((address) &topOfStack[-(offset)])
+#define STACK_ADDR(offset)    (*((address *) &topOfStack[-(offset)]))
+#define STACK_INT(offset)     (*((jint*) &topOfStack[-(offset)]))
+#define STACK_FLOAT(offset)   (*((jfloat *) &topOfStack[-(offset)]))
+#define STACK_OBJECT(offset)  (*((oop *) &topOfStack [-(offset)]))
+#define STACK_DOUBLE(offset)  (((VMJavaVal64*) &topOfStack[-(offset)])->d)
+#define STACK_LONG(offset)    (((VMJavaVal64 *) &topOfStack[-(offset)])->l)
+
+#define SET_STACK_SLOT(value, offset)   (*(intptr_t*)&topOfStack[-(offset)] = *(intptr_t*)(value))
+#define SET_STACK_ADDR(value, offset)   (*((address *)&topOfStack[-(offset)]) = (value))
+#define SET_STACK_INT(value, offset)    (*((jint *)&topOfStack[-(offset)]) = (value))
+#define SET_STACK_FLOAT(value, offset)  (*((jfloat *)&topOfStack[-(offset)]) = (value))
+#define SET_STACK_OBJECT(value, offset) (*((oop *)&topOfStack[-(offset)]) = (value))
+#define SET_STACK_DOUBLE(value, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->d = (value))
+#define SET_STACK_DOUBLE_FROM_ADDR(addr, offset) (((VMJavaVal64*)&topOfStack[-(offset)])->d =  \
+                                                 ((VMJavaVal64*)(addr))->d)
+#define SET_STACK_LONG(value, offset)   (((VMJavaVal64*)&topOfStack[-(offset)])->l = (value))
+#define SET_STACK_LONG_FROM_ADDR(addr, offset)   (((VMJavaVal64*)&topOfStack[-(offset)])->l =  \
+                                                 ((VMJavaVal64*)(addr))->l)
+// JavaLocals implementation
+
+#define LOCALS_SLOT(offset)    ((intptr_t*)&locals[-(offset)])
+#define LOCALS_ADDR(offset)    ((address)locals[-(offset)])
+#define LOCALS_INT(offset)     (*((jint*)&locals[-(offset)]))
+#define LOCALS_FLOAT(offset)   (*((jfloat*)&locals[-(offset)]))
+#define LOCALS_OBJECT(offset)  ((oop)locals[-(offset)])
+#define LOCALS_DOUBLE(offset)  (((VMJavaVal64*)&locals[-((offset) + 1)])->d)
+#define LOCALS_LONG(offset)    (((VMJavaVal64*)&locals[-((offset) + 1)])->l)
+#define LOCALS_LONG_AT(offset) (((address)&locals[-((offset) + 1)]))
+#define LOCALS_DOUBLE_AT(offset) (((address)&locals[-((offset) + 1)]))
+
+#define SET_LOCALS_SLOT(value, offset)    (*(intptr_t*)&locals[-(offset)] = *(intptr_t *)(value))
+#define SET_LOCALS_ADDR(value, offset)    (*((address *)&locals[-(offset)]) = (value))
+#define SET_LOCALS_INT(value, offset)     (*((jint *)&locals[-(offset)]) = (value))
+#define SET_LOCALS_FLOAT(value, offset)   (*((jfloat *)&locals[-(offset)]) = (value))
+#define SET_LOCALS_OBJECT(value, offset)  (*((oop *)&locals[-(offset)]) = (value))
+#define SET_LOCALS_DOUBLE(value, offset)  (((VMJavaVal64*)&locals[-((offset)+1)])->d = (value))
+#define SET_LOCALS_LONG(value, offset)    (((VMJavaVal64*)&locals[-((offset)+1)])->l = (value))
+#define SET_LOCALS_DOUBLE_FROM_ADDR(addr, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->d = \
+                                                  ((VMJavaVal64*)(addr))->d)
+#define SET_LOCALS_LONG_FROM_ADDR(addr, offset) (((VMJavaVal64*)&locals[-((offset)+1)])->l = \
+                                                ((VMJavaVal64*)(addr))->l)
+
+