| /* |
| * Copyright (c) 2013, 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_10; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_6; |
| |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; |
| import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; |
| 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; |
| |
| /** |
| * Emits code to leave (pop) the current low-level stack frame. This operation also removes the |
| * return address if its location is on the stack. |
| */ |
| @NodeInfo(cycles = CYCLES_10, size = SIZE_6) |
| public final class LeaveCurrentStackFrameNode extends FixedWithNextNode implements LIRLowerable { |
| |
| public static final NodeClass<LeaveCurrentStackFrameNode> TYPE = NodeClass.create(LeaveCurrentStackFrameNode.class); |
| @Input SaveAllRegistersNode registerSaver; |
| |
| public LeaveCurrentStackFrameNode(ValueNode registerSaver) { |
| super(TYPE, StampFactory.forVoid()); |
| this.registerSaver = (SaveAllRegistersNode) registerSaver; |
| } |
| |
| private SaveRegistersOp getSaveRegistersOp() { |
| return registerSaver.getSaveRegistersOp(); |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool gen) { |
| ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLeaveCurrentStackFrame(getSaveRegistersOp()); |
| } |
| |
| @NodeIntrinsic |
| public static native void leaveCurrentStackFrame(long registerSaver); |
| } |