--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/RiscAssembly.java	Sat Dec 17 19:59:18 2011 +0100
@@ -0,0 +1,91 @@
+/*
+ * 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.risc;
+
+import java.io.*;
+import java.util.*;
+
+import com.sun.max.asm.dis.risc.*;
+import com.sun.max.asm.gen.*;
+import com.sun.max.collect.*;
+import com.sun.max.lang.*;
+
+/**
+ */
+public abstract class RiscAssembly extends Assembly<RiscTemplate> {
+
+    protected RiscAssembly(ISA isa, Class<RiscTemplate> templateType) {
+        super(isa, templateType);
+    }
+
+    private List<SpecificityGroup> specificityGroups;
+
+    private void initialize() {
+        final IntHashMap<IntHashMap<OpcodeMaskGroup>> specificityTable = new IntHashMap<IntHashMap<OpcodeMaskGroup>>();
+        for (RiscTemplate template : templates()) {
+            if (!template.isRedundant()) {
+                IntHashMap<OpcodeMaskGroup> opcodeMaskGroups = specificityTable.get(template.specificity());
+                if (opcodeMaskGroups == null) {
+                    opcodeMaskGroups = new IntHashMap<OpcodeMaskGroup>();
+                    specificityTable.put(template.specificity(), opcodeMaskGroups);
+                }
+                final int opcodeMask = template.opcodeMask();
+                OpcodeMaskGroup opcodeMaskGroup = opcodeMaskGroups.get(opcodeMask);
+                if (opcodeMaskGroup == null) {
+                    opcodeMaskGroup = new OpcodeMaskGroup(opcodeMask);
+                    opcodeMaskGroups.put(opcodeMask, opcodeMaskGroup);
+                }
+                opcodeMaskGroup.add(template);
+            }
+        }
+        specificityGroups = new LinkedList<SpecificityGroup>();
+        for (int specificity = 33; specificity >= 0; specificity--) {
+            final IntHashMap<OpcodeMaskGroup> opcodeGroupTable = specificityTable.get(specificity);
+            if (opcodeGroupTable != null) {
+                final List<OpcodeMaskGroup> opcodeMaskGroups = opcodeGroupTable.toList();
+                final SpecificityGroup specificityGroup = new SpecificityGroup(specificity, opcodeMaskGroups);
+                specificityGroups.add(specificityGroup);
+            }
+        }
+    }
+
+    public void printSpecificityGroups(PrintStream out) {
+        for (SpecificityGroup specificityGroup : specificityGroups) {
+            out.println("Specificity group " + specificityGroup.specificity());
+            for (OpcodeMaskGroup opcodeMaskGroup : specificityGroup.opcodeMaskGroups()) {
+                out.println("  Opcode mask group " + Integer.toBinaryString(opcodeMaskGroup.mask()));
+                for (RiscTemplate template : opcodeMaskGroup.templates()) {
+                    out.println("    " + template);
+                }
+            }
+        }
+    }
+
+    public List<SpecificityGroup> specificityGroups() {
+        if (specificityGroups == null) {
+            initialize();
+        }
+        return specificityGroups;
+    }
+
+}