--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotForeignCallLinkage.java	2016-12-09 00:49:17.433789288 -0800
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2012, 2016, 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 org.graalvm.compiler.hotspot;
+
+import jdk.vm.ci.meta.InvokeTarget;
+
+import org.graalvm.compiler.core.common.LocationIdentity;
+import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
+import org.graalvm.compiler.core.target.Backend;
+import org.graalvm.compiler.hotspot.stubs.Stub;
+
+/**
+ * The details required to link a HotSpot runtime or stub call.
+ */
+public interface HotSpotForeignCallLinkage extends ForeignCallLinkage, InvokeTarget {
+
+    /**
+     * Constants for specifying whether a foreign call destroys or preserves registers. A foreign
+     * call will always destroy {@link HotSpotForeignCallLinkage#getOutgoingCallingConvention() its}
+     * {@linkplain ForeignCallLinkage#getTemporaries() temporary} registers.
+     */
+    enum RegisterEffect {
+        DESTROYS_REGISTERS,
+        PRESERVES_REGISTERS
+    }
+
+    /**
+     * Constants for specifying whether a call is a leaf or not and whether a
+     * {@code JavaFrameAnchor} prologue and epilogue is required around the call. A leaf function
+     * does not lock, GC or throw exceptions.
+     */
+    enum Transition {
+        /**
+         * A call to a leaf function that is guaranteed to not use floating point registers and will
+         * never have its caller stack inspected by the VM. That is, {@code JavaFrameAnchor}
+         * management around the call can be omitted.
+         */
+        LEAF_NOFP,
+
+        /**
+         * A call to a leaf function that might use floating point registers but will never have its
+         * caller stack inspected. That is, {@code JavaFrameAnchor} management around the call can
+         * be omitted.
+         */
+        LEAF,
+
+        /**
+         * A call to a leaf function that might use floating point registers and may have its caller
+         * stack inspected. That is, {@code JavaFrameAnchor} management code around the call is
+         * required.
+         */
+        STACK_INSPECTABLE_LEAF,
+
+        /**
+         * A function that may lock, GC or raise an exception and thus requires debug info to be
+         * associated with a call site to the function. The execution stack may be inspected while
+         * in the called function. That is, {@code JavaFrameAnchor} management code around the call
+         * is required.
+         */
+        SAFEPOINT,
+    }
+
+    /**
+     * Sentinel marker for a computed jump address.
+     */
+    long JUMP_ADDRESS = 0xDEADDEADBEEFBEEFL;
+
+    boolean isReexecutable();
+
+    LocationIdentity[] getKilledLocations();
+
+    void setCompiledStub(Stub stub);
+
+    /**
+     * Determines if this is a call to a compiled {@linkplain Stub stub}.
+     */
+    boolean isCompiledStub();
+
+    void finalizeAddress(Backend backend);
+
+    long getAddress();
+
+    /**
+     * Determines if the runtime function or stub might use floating point registers. If the answer
+     * is no, then no FPU state management prologue or epilogue needs to be emitted around the call.
+     */
+    boolean mayContainFP();
+
+    /**
+     * Determines if a {@code JavaFrameAnchor} needs to be set up and torn down around this call.
+     */
+    boolean needsJavaFrameAnchor();
+
+    /**
+     * Gets the VM symbol associated with the target {@linkplain #getAddress() address} of the call.
+     */
+    String getSymbol();
+
+    /**
+     * Identifies foreign calls which are guaranteed to include a safepoint check.
+     */
+    boolean isGuaranteedSafepoint();
+}