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 
  29 abstract class ReadWriteDecoder extends InstructionDecoder {
  30     final int specialRegNum;
  31 
  32     abstract Instruction decodeReadWrite(int instruction,
  33                                SPARCInstructionFactory factory,
  34                                int rs1Num, int rdNum);
  35 
  36     ReadWriteDecoder(int specialRegNum) {
  37         this.specialRegNum = specialRegNum;
  38     }
  39 
  40     Instruction decode(int instruction, SPARCInstructionFactory factory) {
  41         Instruction instr = null;
  42         int rs1Num = getSourceRegister1(instruction);
  43         int rdNum = getDestinationRegister(instruction);
  44         return decodeReadWrite(instruction, factory, rs1Num, rdNum);
  45     }
  46 }