--- /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/nodes/PatchReturnAddressNode.java 2016-12-09 00:49:37.946693525 -0800 @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2009, 2015, 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.nodes; + +import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2; +import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; + +import org.graalvm.compiler.core.common.type.StampFactory; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.hotspot.HotSpotNodeLIRBuilder; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.FixedWithNextNode; +import org.graalvm.compiler.nodes.ValueNode; +import org.graalvm.compiler.nodes.spi.LIRLowerable; +import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; +import org.graalvm.compiler.word.Word; + +/** + * Modifies the return address of the current frame. + */ +@NodeInfo(cycles = CYCLES_2, size = SIZE_1) +public final class PatchReturnAddressNode extends FixedWithNextNode implements LIRLowerable { + + public static final NodeClass TYPE = NodeClass.create(PatchReturnAddressNode.class); + @Input ValueNode address; + + public PatchReturnAddressNode(ValueNode address) { + super(TYPE, StampFactory.forVoid()); + this.address = address; + } + + @Override + public void generate(NodeLIRBuilderTool gen) { + ((HotSpotNodeLIRBuilder) gen).emitPatchReturnAddress(address); + } + + @NodeIntrinsic + public static native void patchReturnAddress(Word address); +}