1 /* 2 * Copyright (c) 2013, 2014, 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_20; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_10; 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 import org.graalvm.compiler.word.Word; 39 40 import jdk.vm.ci.meta.Value; 41 42 /** 43 * Emits code to enter a low-level stack frame specifically to call out to the C++ method 44 * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. 45 */ 46 @NodeInfo(cycles = CYCLES_20, size = SIZE_10) 47 public final class EnterUnpackFramesStackFrameNode extends FixedWithNextNode implements LIRLowerable { 48 public static final NodeClass<EnterUnpackFramesStackFrameNode> TYPE = NodeClass.create(EnterUnpackFramesStackFrameNode.class); 49 50 @Input ValueNode framePc; 51 @Input ValueNode senderSp; 52 @Input ValueNode senderFp; 53 @Input SaveAllRegistersNode registerSaver; 54 55 public EnterUnpackFramesStackFrameNode(ValueNode framePc, ValueNode senderSp, ValueNode senderFp, ValueNode registerSaver) { 56 super(TYPE, StampFactory.forVoid()); 57 this.framePc = framePc; 58 this.senderSp = senderSp; 59 this.senderFp = senderFp; 60 this.registerSaver = (SaveAllRegistersNode) registerSaver; 61 } 62 63 private SaveRegistersOp getSaveRegistersOp() { 64 return registerSaver.getSaveRegistersOp(); 65 } 66 67 @Override 68 public void generate(NodeLIRBuilderTool gen) { 69 Value operandValue = gen.operand(framePc); 70 Value senderSpValue = gen.operand(senderSp); 71 Value senderFpValue = gen.operand(senderFp); 72 ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitEnterUnpackFramesStackFrame(operandValue, senderSpValue, senderFpValue, getSaveRegistersOp()); 73 } 74 75 @NodeIntrinsic 76 public static native void enterUnpackFramesStackFrame(Word framePc, Word senderSp, Word senderFp, long registerSaver); 77 }