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.*;
  28 
  29 class CoprocessorDecoder extends InstructionDecoder {
  30     private int op3;
  31     CoprocessorDecoder(int op3) {
  32         this.op3 = op3;
  33     }
  34 
  35     Instruction decode(int instruction, SPARCInstructionFactory factory) {
  36         int rs1Num = getSourceRegister1(instruction);
  37         int rs2Num = getSourceRegister2(instruction);
  38         int rdNum = getDestinationRegister(instruction);
  39 
  40         return factory.newCoprocessorInstruction(instruction, op3,
  41                                      (instruction & OPC_MASK) >> OPF_START_BIT,
  42                                      rs1Num, rs2Num, rdNum);
  43     }
  44 }