1 /*
   2  * Copyright (c) 2002, 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,
  20  * CA 94065 USA or visit www.oracle.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.asm.sparc;
  26 
  27 import sun.jvm.hotspot.asm.SymbolFinder;
  28 import java.util.Vector;
  29 
  30 public class SPARCV9MembarInstruction extends SPARCInstruction
  31                   implements SPARCV9Instruction {
  32     final private int mmask;
  33     final private int cmask;
  34     final private String description;
  35 
  36     public SPARCV9MembarInstruction(int mmask, int cmask) {
  37         super("membar");
  38         this.mmask = mmask & 0xF;
  39         this.cmask = cmask & 0x7;
  40         description = initDescription();
  41     }
  42 
  43     private String initDescription() {
  44         StringBuffer buf = new StringBuffer();
  45         buf.append(getName());
  46         buf.append(spaces);
  47 
  48         Vector masks = new Vector();
  49         if ((mmask & 0x1) != 0)
  50             masks.add("#LoadLoad");
  51         if ((mmask & 0x2) != 0)
  52             masks.add("#StoreLoad");
  53         if ((mmask & 0x4) != 0)
  54             masks.add("#LoadStore");
  55         if ((mmask & 0x8) != 0)
  56             masks.add("#StoreStore");
  57 
  58         if ((cmask & 0x1) != 0)
  59             masks.add("#Lookaside");
  60         if ((cmask & 0x2) != 0)
  61             masks.add("#MemIssue");
  62         if ((cmask & 0x4) != 0)
  63             masks.add("#Sync");
  64 
  65         // add all masks
  66         Object[] tempMasks = masks.toArray();
  67         for (int i=0; i < tempMasks.length - 1; i++) {
  68             buf.append((String)tempMasks[i]);
  69             buf.append("| ");
  70         }
  71         buf.append((String)tempMasks[tempMasks.length - 1]);
  72 
  73         return buf.toString();
  74     }
  75 
  76     public int getMMask() {
  77         return mmask;
  78     }
  79 
  80     public int getCMask() {
  81         return cmask;
  82     }
  83 
  84     public String asString(long currentPc, SymbolFinder symFinder) {
  85         return description;
  86     }
  87 }