--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/interpreter/interpreter.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 1997, 2015, 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 SHARE_VM_INTERPRETER_INTERPRETER_HPP
+#define SHARE_VM_INTERPRETER_INTERPRETER_HPP
+
+#include "code/stubs.hpp"
+#include "interpreter/cppInterpreter.hpp"
+#include "interpreter/templateInterpreter.hpp"
+#include "memory/resourceArea.hpp"
+#include "utilities/align.hpp"
+
+// This file contains the platform-independent parts
+// of the interpreter and the interpreter generator.
+
+class InterpreterMacroAssembler;
+
+//------------------------------------------------------------------------------------------------------------------------
+// An InterpreterCodelet is a piece of interpreter code. All
+// interpreter code is generated into little codelets which
+// contain extra information for debugging and printing purposes.
+
+class InterpreterCodelet: public Stub {
+  friend class VMStructs;
+  friend class CodeCacheDumper; // possible extension [do not remove]
+ private:
+  int         _size;                             // the size in bytes
+  const char* _description;                      // a description of the codelet, for debugging & printing
+  Bytecodes::Code _bytecode;                     // associated bytecode if any
+  DEBUG_ONLY(CodeStrings _strings;)              // Comments for annotating assembler output.
+
+ public:
+  // Initialization/finalization
+  void    initialize(int size,
+                     CodeStrings& strings)       { _size = size;
+                                                   DEBUG_ONLY(::new(&_strings) CodeStrings();)
+                                                   DEBUG_ONLY(_strings.assign(strings);) }
+  void    finalize()                             { ShouldNotCallThis(); }
+
+  // General info/converters
+  int     size() const                           { return _size; }
+  static  int code_size_to_size(int code_size)   { return align_up((int)sizeof(InterpreterCodelet), CodeEntryAlignment) + code_size; }
+
+  // Code info
+  address code_begin() const                     { return (address)this + align_up(sizeof(InterpreterCodelet), CodeEntryAlignment); }
+  address code_end() const                       { return (address)this + size(); }
+
+  // Debugging
+  void    verify();
+  void    print_on(outputStream* st) const;
+  void    print() const { print_on(tty); }
+
+  // Interpreter-specific initialization
+  void    initialize(const char* description, Bytecodes::Code bytecode);
+
+  // Interpreter-specific attributes
+  int         code_size() const                  { return code_end() - code_begin(); }
+  const char* description() const                { return _description; }
+  Bytecodes::Code bytecode() const               { return _bytecode; }
+};
+
+// Define a prototype interface
+DEF_STUB_INTERFACE(InterpreterCodelet);
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// A CodeletMark serves as an automatic creator/initializer for Codelets
+// (As a subclass of ResourceMark it automatically GC's the allocated
+// code buffer and assemblers).
+
+class CodeletMark: ResourceMark {
+ private:
+  InterpreterCodelet*         _clet;
+  InterpreterMacroAssembler** _masm;
+  CodeBuffer                  _cb;
+
+  int codelet_size() {
+    // Request the whole code buffer (minus a little for alignment).
+    // The commit call below trims it back for each codelet.
+    int codelet_size = AbstractInterpreter::code()->available_space() - 2*K;
+
+    // Guarantee there's a little bit of code space left.
+    guarantee(codelet_size > 0 && (size_t)codelet_size > 2*K,
+              "not enough space for interpreter generation");
+
+    return codelet_size;
+  }
+
+ public:
+  CodeletMark(InterpreterMacroAssembler*& masm,
+              const char* description,
+              Bytecodes::Code bytecode = Bytecodes::_illegal);
+  ~CodeletMark();
+};
+
+// Wrapper typedef to use the name Interpreter to mean either
+// the c++ interpreter or the template interpreter.
+
+typedef CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) Interpreter;
+
+#endif // SHARE_VM_INTERPRETER_INTERPRETER_HPP