Interpreter.

The opcodes filled-new-array and packed-switch aren't implemented but
are trivial given that they are variants of implemented opcodes.
Refactor Field::Get routines to take the declaring class in the case of
static field accesses. This avoids a check on every use of a field.
Refactor arg array builder to be shared by JNI invokes and invocations
into the interpreter.
Fix benign bug in const decoding in the verifier.

Change-Id: I8dee6c1f4b7f033e6c003422c56e9471cfaccda8
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
new file mode 100644
index 0000000..ea07ce8
--- /dev/null
+++ b/src/interpreter/interpreter.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_INTERPRETER_INTERPRETER_H_
+#define ART_SRC_INTERPRETER_INTERPRETER_H_
+
+#include "locks.h"
+
+namespace art {
+
+class AbstractMethod;
+union JValue;
+class Object;
+class Thread;
+
+namespace interpreter {
+
+extern void EnterInterpreterFromInvoke(Thread* self, AbstractMethod* method, Object* receiver,
+                                       JValue* args, JValue* result)
+    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+}  // namespace interpreter
+}  // namespace art
+
+#endif  // ART_SRC_INTERPRETER_INTERPRETER_H_