--- /dev/null	2019-03-28 11:25:00.000000000 -0700
+++ new/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIReflection.java	2019-03-28 11:25:00.000000000 -0700
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2018, 2019, 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.
+ */
+package jdk.vm.ci.hotspot;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.ResolvedJavaType;
+
+/**
+ * Reflection interface for reflecting on the internals of HotSpot JVMCI types and objects.
+ */
+abstract class HotSpotJVMCIReflection {
+
+    abstract boolean isInstance(HotSpotResolvedObjectTypeImpl holder, HotSpotObjectConstantImpl obj);
+
+    abstract boolean isAssignableFrom(HotSpotResolvedObjectTypeImpl holder, HotSpotResolvedObjectTypeImpl otherType);
+
+    abstract Annotation[] getAnnotations(HotSpotResolvedObjectTypeImpl holder);
+
+    abstract Annotation[] getDeclaredAnnotations(HotSpotResolvedObjectTypeImpl holder);
+
+    abstract <T extends Annotation> T getAnnotation(HotSpotResolvedObjectTypeImpl holder, Class<T> annotationClass);
+
+    abstract boolean isLocalClass(HotSpotResolvedObjectTypeImpl holder);
+
+    abstract boolean isMemberClass(HotSpotResolvedObjectTypeImpl holder);
+
+    abstract HotSpotResolvedObjectType getEnclosingClass(HotSpotResolvedObjectTypeImpl holder);
+
+    abstract JavaConstant readFieldValue(HotSpotResolvedObjectTypeImpl holder, HotSpotResolvedJavaField field, boolean isVolatile);
+
+    abstract JavaConstant readFieldValue(HotSpotObjectConstantImpl object, HotSpotResolvedJavaField field, boolean isVolatile);
+
+    abstract boolean equals(HotSpotObjectConstantImpl hotSpotResolvedJavaType, HotSpotObjectConstantImpl that);
+
+    abstract JavaConstant getJavaMirror(HotSpotResolvedPrimitiveType hotSpotResolvedJavaType);
+
+    abstract ResolvedJavaMethod.Parameter[] getParameters(HotSpotResolvedJavaMethodImpl javaMethod);
+
+    abstract Annotation[][] getParameterAnnotations(HotSpotResolvedJavaMethodImpl javaMethod);
+
+    abstract Type[] getGenericParameterTypes(HotSpotResolvedJavaMethodImpl javaMethod);
+
+    abstract Annotation[] getFieldAnnotations(HotSpotResolvedJavaFieldImpl javaMethod);
+
+    abstract Annotation[] getMethodAnnotations(HotSpotResolvedJavaMethodImpl javaField);
+
+    abstract Annotation[] getMethodDeclaredAnnotations(HotSpotResolvedJavaMethodImpl javaMethod);
+
+    abstract Annotation[] getFieldDeclaredAnnotations(HotSpotResolvedJavaFieldImpl javaMethod);
+
+    abstract <T extends Annotation> T getMethodAnnotation(HotSpotResolvedJavaMethodImpl javaMethod, Class<T> annotationClass);
+
+    abstract HotSpotResolvedObjectTypeImpl getType(HotSpotObjectConstantImpl object);
+
+    abstract String asString(HotSpotObjectConstantImpl object);
+
+    /**
+     * Given a {@link java.lang.Class} instance, return the corresponding ResolvedJavaType.
+     */
+    abstract ResolvedJavaType asJavaType(HotSpotObjectConstantImpl object);
+
+    abstract <T> T asObject(HotSpotObjectConstantImpl object, Class<T> type);
+
+    abstract Object asObject(HotSpotObjectConstantImpl object, HotSpotResolvedJavaType type);
+
+    abstract String formatString(HotSpotObjectConstantImpl object);
+
+    abstract Integer getLength(HotSpotObjectConstantImpl arrayObject);
+
+    abstract JavaConstant readArrayElement(HotSpotObjectConstantImpl arrayObject, int index);
+
+    abstract JavaConstant unboxPrimitive(HotSpotObjectConstantImpl source);
+
+    abstract JavaConstant forObject(Object value);
+
+    abstract JavaConstant boxPrimitive(JavaConstant source);
+
+    abstract int getInt(HotSpotObjectConstantImpl object, long displacement);
+
+    abstract byte getByte(HotSpotObjectConstantImpl object, long displacement);
+
+    abstract short getShort(HotSpotObjectConstantImpl object, long displacement);
+
+    abstract long getLong(HotSpotObjectConstantImpl object, long displacement);
+
+    abstract void checkRead(HotSpotObjectConstantImpl constant, JavaKind kind, long displacement, HotSpotResolvedObjectType type);
+
+    abstract <T extends Annotation> T getFieldAnnotation(HotSpotResolvedJavaFieldImpl javaField, Class<T> annotationClass);
+
+    /**
+     * Resolves {@code objectHandle} to a raw object if possible.
+     *
+     * @throws HotSpotJVMCIUnsupportedOperationError if {@code objectHandle} refers to an object in
+     *             another heap
+     */
+    abstract Object resolveObject(HotSpotObjectConstantImpl objectHandle);
+}