--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/Template.java	Sat Dec 17 19:59:18 2011 +0100
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2007, 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 com.sun.max.asm.gen;
+
+import java.lang.reflect.*;
+import java.util.*;
+
+import com.sun.max.*;
+import com.sun.max.asm.*;
+import com.sun.max.program.*;
+
+/**
+ * An internal representation of an assembler method.
+ */
+public abstract class Template implements Cloneable, Comparable<Template> {
+
+    private int serial = -1;
+    private InstructionDescription instructionDescription;
+    private int labelParameterIndex = -1;
+
+    protected Template(InstructionDescription instructionDescription) {
+        this.instructionDescription = instructionDescription;
+    }
+
+    protected Template(InstructionDescription instructionDescription, int serial) {
+        this.instructionDescription = instructionDescription;
+        this.serial = serial;
+    }
+
+    public int serial() {
+        return serial;
+    }
+
+    public void setSerial(int serial) {
+        this.serial = serial;
+    }
+
+    public InstructionDescription instructionDescription() {
+        return instructionDescription;
+    }
+
+    /**
+     * Gets the index of this template's parameter that can be represented as a {@linkplain Label label}.
+     * A template is guaranteed to at most one such parameter.
+     *
+     * @return the index of this template's label parameter or -1 if it does not have one
+     */
+    public int labelParameterIndex() {
+        return labelParameterIndex;
+    }
+
+    /**
+     * Call this right before adding a parameter that may be represented by a label.
+     */
+    protected void setLabelParameterIndex() {
+        if (labelParameterIndex != -1) {
+            throw ProgramError.unexpected("a template can have at most one label parameter");
+        }
+        labelParameterIndex = parameters().size();
+    }
+
+    public abstract String assemblerMethodName();
+
+    protected Method assemblerMethod;
+
+    /**
+     * Determines if this template is redundant with respect to another
+     * {@linkplain #canonicalRepresentative() canonical} template.
+     * Two templates are redundant if they both have the same name and operands.
+     * Redundant pairs of instructions are assumed to implement the same machine
+     * instruction semantics but may have different encodings.
+     *
+     * @return whether this template is redundant with respect some other template
+     */
+    public final boolean isRedundant() {
+        return canonicalRepresentative() != null;
+    }
+
+    /**
+     * @see #isRedundant()
+     */
+    public abstract Template canonicalRepresentative();
+
+    /**
+     * The name of the Java method that will be created from this template.
+     */
+    private String internalName;
+
+    public String internalName() {
+        return internalName;
+    }
+
+    protected void setInternalName(String name) {
+        this.internalName = name;
+    }
+
+    public String externalName() {
+        if (instructionDescription.externalName() != null) {
+            return instructionDescription.externalName();
+        }
+        return internalName();
+    }
+
+    public boolean isDisassemblable() {
+        return instructionDescription.isDisassemblable();
+    }
+
+    public boolean isExternallyTestable() {
+        return instructionDescription.isExternallyTestable();
+    }
+
+    public abstract List<? extends Operand> operands();
+
+    public abstract List<? extends Parameter> parameters();
+
+    /**
+     * Gets the argument from a given list of arguments corresponding to a parameter of this template.
+     *
+     * @return the argument at index {@code i} in {@code arguments} where {@code parameter == parameters().get(i)}
+     */
+    public Argument bindingFor(Parameter parameter, List<Argument> arguments) {
+        final List< ? extends Parameter> parameters = parameters();
+        assert arguments.size() == parameters.size();
+        final int index = Utils.indexOfIdentical(parameters, parameter);
+        ProgramError.check(index != -1, parameter + " is not a parameter of " + externalName());
+        return arguments.get(index);
+    }
+
+    public Class[] parameterTypes() {
+        final Class[] parameterTypes = new Class[parameters().size()];
+        for (int i = 0; i < parameters().size(); i++) {
+            parameterTypes[i] = parameters().get(i).type();
+        }
+        return parameterTypes;
+    }
+
+    @Override
+    public Template clone() {
+        try {
+            final Template result = (Template) super.clone();
+            result.instructionDescription = instructionDescription.clone();
+            return result;
+        } catch (CloneNotSupportedException cloneNotSupportedException) {
+            throw ProgramError.unexpected(cloneNotSupportedException);
+        }
+    }
+
+    public int compareTo(Template other) {
+        int result = internalName.compareTo(other.internalName);
+        if (result != 0) {
+            return result;
+        }
+        final List<? extends Parameter> myParameters = parameters();
+        final List<? extends Parameter> otherParameters = other.parameters();
+        final int n = Math.min(myParameters.size(), otherParameters.size());
+        for (int i = 0; i < n; i++) {
+            result = myParameters.get(i).compareTo(otherParameters.get(i));
+            if (result != 0) {
+                return result;
+            }
+        }
+        return new Integer(myParameters.size()).compareTo(otherParameters.size());
+    }
+
+    public final boolean isEquivalentTo(Template other) {
+        if (this == other) {
+            return true;
+        }
+        Template a = this;
+        if (a.canonicalRepresentative() != null) {
+            a = a.canonicalRepresentative();
+        }
+        Template b = other;
+        if (b.canonicalRepresentative() != null) {
+            b = b.canonicalRepresentative();
+        }
+        return a == b;
+    }
+}