--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/spi/ForeignCallLinkage.java	Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2009, 2012, 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.core.common.spi;
+
+import jdk.vm.ci.code.CallingConvention;
+import jdk.vm.ci.meta.InvokeTarget;
+import jdk.vm.ci.meta.Value;
+
+/**
+ * The runtime specific details of a {@linkplain ForeignCallDescriptor foreign} call.
+ */
+public interface ForeignCallLinkage extends InvokeTarget {
+
+    /**
+     * Gets the details of where parameters are passed and value(s) are returned from the caller's
+     * perspective.
+     */
+    CallingConvention getOutgoingCallingConvention();
+
+    /**
+     * Gets the details of where parameters are passed and value(s) are returned from the callee's
+     * perspective.
+     */
+    CallingConvention getIncomingCallingConvention();
+
+    /**
+     * Returns the maximum absolute offset of a PC relative call to this stub from any position in
+     * the code cache or -1 when not applicable. Intended for determining the required size of
+     * address/offset fields.
+     */
+    long getMaxCallTargetOffset();
+
+    ForeignCallDescriptor getDescriptor();
+
+    /**
+     * Gets the values used/killed by this foreign call.
+     */
+    Value[] getTemporaries();
+
+    /**
+     * Determines if the foreign call target destroys all registers.
+     *
+     * @return {@code true} if the register allocator must save all live registers around a call to
+     *         this target
+     */
+    boolean destroysRegisters();
+
+    /**
+     * Determines if debug info needs to be associated with this call. Debug info is required if the
+     * function can raise an exception, try to lock, trigger GC or do anything else that requires
+     * the VM to be able to inspect the thread's execution state.
+     */
+    boolean needsDebugInfo();
+}