--- /dev/null 2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/spi/ForeignCallDescriptor.java 2016-12-07 13:47:59.707500032 -0800
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2009, 2013, 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 java.util.Arrays;
+
+/**
+ * The name and signature of a foreign call. A foreign call differs from a normal compiled Java call
+ * in at least one of these aspects:
+ *
+ * - The call is to C/C++/assembler code.
+ * - The call uses different conventions for passing parameters or returning values.
+ * - The callee has different register saving semantics. For example, the callee may save all
+ * registers (apart from some specified temporaries) in which case the register allocator doesn't
+ * not need to spill all live registers around the call site.
+ * - The call does not occur at an INVOKE* bytecode. Such a call could be transformed into a
+ * standard Java call if the foreign routine is a normal Java method and the runtime supports
+ * linking Java calls at arbitrary bytecodes.
+ *
+ */
+public class ForeignCallDescriptor {
+
+ private final String name;
+ private final Class> resultType;
+ private final Class>[] argumentTypes;
+
+ public ForeignCallDescriptor(String name, Class> resultType, Class>... argumentTypes) {
+ this.name = name;
+ this.resultType = resultType;
+ this.argumentTypes = argumentTypes;
+ }
+
+ /**
+ * Gets the name of this foreign call.
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * Gets the return type of this foreign call.
+ */
+ public Class> getResultType() {
+ return resultType;
+ }
+
+ /**
+ * Gets the argument types of this foreign call.
+ */
+ public Class>[] getArgumentTypes() {
+ return argumentTypes.clone();
+ }
+
+ @Override
+ public int hashCode() {
+ return name.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (obj instanceof ForeignCallDescriptor) {
+ ForeignCallDescriptor other = (ForeignCallDescriptor) obj;
+ return other.name.equals(name) && other.resultType.equals(resultType) && Arrays.equals(other.argumentTypes, argumentTypes);
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder sb = new StringBuilder(name).append('(');
+ String sep = "";
+ for (Class> arg : argumentTypes) {
+ sb.append(sep).append(arg.getSimpleName());
+ sep = ",";
+ }
+ return sb.append(')').append(resultType.getSimpleName()).toString();
+ }
+}