1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_10; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_6; 27 28 import org.graalvm.compiler.core.common.type.StampFactory; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.hotspot.HotSpotBackend; 31 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 32 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; 33 import org.graalvm.compiler.nodeinfo.NodeInfo; 34 import org.graalvm.compiler.nodes.FixedWithNextNode; 35 import org.graalvm.compiler.nodes.ValueNode; 36 import org.graalvm.compiler.nodes.spi.LIRLowerable; 37 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 38 39 /** 40 * Emits code to leave a low-level stack frame specifically to call out to the C++ method 41 * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. 42 */ 43 @NodeInfo(cycles = CYCLES_10, size = SIZE_6) 44 public final class LeaveUnpackFramesStackFrameNode extends FixedWithNextNode implements LIRLowerable { 45 46 public static final NodeClass<LeaveUnpackFramesStackFrameNode> TYPE = NodeClass.create(LeaveUnpackFramesStackFrameNode.class); 47 @Input SaveAllRegistersNode registerSaver; 48 49 public LeaveUnpackFramesStackFrameNode(ValueNode registerSaver) { 50 super(TYPE, StampFactory.forVoid()); 51 this.registerSaver = (SaveAllRegistersNode) registerSaver; 52 } 53 54 private SaveRegistersOp getSaveRegistersOp() { 55 return registerSaver.getSaveRegistersOp(); 56 } 57 58 @Override 59 public void generate(NodeLIRBuilderTool gen) { 60 ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLeaveUnpackFramesStackFrame(getSaveRegistersOp()); 61 } 62 63 @NodeIntrinsic 64 public static native void leaveUnpackFramesStackFrame(long registerSaver); 65 }