--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/BreakpointNode.java 2017-02-15 17:06:32.331357295 -0800 @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2011, 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.nodes; + +import org.graalvm.compiler.core.common.type.StampFactory; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.graph.NodeInputList; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.spi.LIRLowerable; +import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; + +/** + * A node that results in a platform dependent breakpoint instruction being emitted. A number of + * arguments can be associated with such a node for placing values of interest in the Java ABI + * specified parameter locations corresponding to the kinds of the values. That is, the arguments + * are set up as if the breakpoint instruction was a call to a compiled Java method. + *

+ * A breakpoint is usually place by defining a node intrinsic method as follows: + * + *

+ *     {@literal @}NodeIntrinsic(BreakpointNode.class)
+ *     static void breakpoint(Object object, Word mark, Word value) {
+ *          throw new GraalError("");
+ *     }
+ * 
+ * + * Note that the signature is arbitrary. It's sole purpose is to capture values you may want to + * inspect in the native debugger when the breakpoint is hit. + */ +@NodeInfo +public final class BreakpointNode extends FixedWithNextNode implements LIRLowerable { + + public static final NodeClass TYPE = NodeClass.create(BreakpointNode.class); + @Input NodeInputList arguments; + + public BreakpointNode(ValueNode... arguments) { + super(TYPE, StampFactory.forVoid()); + this.arguments = new NodeInputList<>(this, arguments); + } + + @Override + public void generate(NodeLIRBuilderTool gen) { + gen.visitBreakpointNode(this); + } + + public NodeInputList arguments() { + return arguments; + } + + @NodeIntrinsic + public static native void breakpoint(); +}