hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/nodes/VMErrorNode.java

/*
 * Copyright (c) 2012, 2016, 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
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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.hotspot.HotSpotBackend.VM_ERROR;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN;

import org.graalvm.compiler.bytecode.Bytecode;
import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FrameState;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import org.graalvm.compiler.replacements.Log;
import org.graalvm.compiler.replacements.nodes.CStringConstant;

import jdk.vm.ci.code.CodeUtil;
import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.meta.Value;

/**
 * Causes the VM to exit with a description of the current Java location and an optional
 * {@linkplain Log#printf(String, long) formatted} error message specified.
 */
@NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN)
public final class VMErrorNode extends DeoptimizingStubCall implements LIRLowerable {

    public static final NodeClass<VMErrorNode> TYPE = NodeClass.create(VMErrorNode.class);
    protected final String format;
    @Input ValueNode value;

    public VMErrorNode(String format, ValueNode value) {
        super(TYPE, StampFactory.forVoid());
        this.format = format;
        this.value = value;
    }

    @Override
    public void generate(NodeLIRBuilderTool gen) {
        String whereString;
        if (stateBefore() != null) {
            String nl = CodeUtil.NEW_LINE;
            StringBuilder sb = new StringBuilder("in compiled code associated with frame state:");
            FrameState fs = stateBefore();
            while (fs != null) {
                Bytecode.appendLocation(sb.append(nl).append("\t"), fs.getCode(), fs.bci);
                fs = fs.outerFrameState();
            }
            whereString = sb.toString();
        } else {
            ResolvedJavaMethod method = graph().method();
            whereString = "in compiled code for " + (method == null ? graph().toString() : method.format("%H.%n(%p)"));
        }

        LIRKind wordKind = gen.getLIRGeneratorTool().getLIRKind(StampFactory.pointer());
        Value whereArg = gen.getLIRGeneratorTool().emitConstant(wordKind, new CStringConstant(whereString));
        Value formatArg = gen.getLIRGeneratorTool().emitConstant(wordKind, new CStringConstant(format));

        ForeignCallLinkage linkage = gen.getLIRGeneratorTool().getForeignCalls().lookupForeignCall(VM_ERROR);
        gen.getLIRGeneratorTool().emitForeignCall(linkage, null, whereArg, formatArg, gen.operand(value));
    }

    @NodeIntrinsic
    public static native void vmError(@ConstantNodeParameter String format, long value);
}