1 /*
   2  * Copyright 2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.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 sun.jvm.hotspot.utilities.Assert;
  29 
  30 public class SPARCV9ReadInstruction extends SPARCV9SpecialRegisterInstruction {
  31     final private int specialReg;
  32     final private int asrRegNum;
  33     final private SPARCRegister rd;
  34 
  35     public SPARCV9ReadInstruction(int specialReg, int asrRegNum, SPARCRegister rd) {
  36         super("rd");
  37         this.specialReg = specialReg;
  38         this.asrRegNum = asrRegNum;
  39         this.rd = rd;
  40     }
  41 
  42     public int getSpecialRegister() {
  43         return specialReg;
  44     }
  45 
  46     public int getAncillaryRegister() {
  47         if (Assert.ASSERTS_ENABLED)
  48             Assert.that(specialReg == ASR, "not an ancillary register");
  49         return asrRegNum;
  50     }
  51 
  52     protected String getDescription() {
  53         StringBuffer buf = new StringBuffer();
  54         buf.append(getName());
  55         buf.append(spaces);
  56         if(specialReg == ASR)
  57             buf.append("%asr" + asrRegNum);
  58         else
  59             buf.append(getSpecialRegisterName(specialReg));
  60         buf.append(comma);
  61         buf.append(rd.toString());
  62         return buf.toString();
  63     }
  64 }