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.*;
  28 import sun.jvm.hotspot.utilities.Assert;
  29 
  30 public class SPARCSpecialLoadInstruction
  31                         extends SPARCSpecialRegisterInstruction
  32                         implements /* imports */ SPARCSpecialRegisters {
  33     final private int specialReg;
  34     final private int cregNum;
  35     final private SPARCRegisterIndirectAddress addr;
  36 
  37     public SPARCSpecialLoadInstruction(String name, int specialReg, int cregNum,
  38                                              SPARCRegisterIndirectAddress addr) {
  39         super(name);
  40         this.specialReg = specialReg;
  41         this.cregNum = cregNum;
  42         this.addr = addr;
  43     }
  44 
  45     public SPARCSpecialLoadInstruction(String name, int specialReg, SPARCRegisterIndirectAddress addr) {
  46         this(name, specialReg, -1, addr);
  47     }
  48 
  49     public int getSpecialRegister() {
  50         return specialReg;
  51     }
  52 
  53     public int getCoprocessorRegister() {
  54         if (Assert.ASSERTS_ENABLED)
  55             Assert.that(specialReg == CREG, "not a coprocesssor register");
  56         return cregNum;
  57     }
  58 
  59     public Address getSource() {
  60         return addr;
  61     }
  62 
  63     protected String getDescription() {
  64         StringBuffer buf = new StringBuffer();
  65         buf.append(getName());
  66         buf.append(spaces);
  67         buf.append(addr);
  68         buf.append(comma);
  69         if (specialReg == CREG) {
  70            buf.append("creg" + cregNum);
  71         } else {
  72            buf.append(getSpecialRegisterName(specialReg));
  73         }
  74         return buf.toString();
  75     }
  76 }