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 public abstract class SPARCV9PrivilegedRegisterInstruction extends SPARCInstruction
  30                           implements SPARCV9Instruction, /* imports */ SPARCV9PrivilegedRegisters {
  31     protected static final String regNames[] = {
  32         "%tpc", "%tnpc", "%tstate", "%tt", "%tick", "%tba", "%pstate", "%tl",
  33         "%pil", "%cwp",  "%cansave", "%canrestore", "%cleanwin", "%otherwin", "%wstate", "%fq"
  34     };
  35 
  36     protected static String getPrivilegedRegisterName(int regNum) {
  37         if ((regNum > 15 && regNum < 31) || regNum > 31)
  38             return null;
  39         return (regNum == 31)? "%ver" : regNames[regNum];
  40     }
  41 
  42     final protected int regNum;
  43 
  44     protected abstract String getDescription();
  45 
  46     protected SPARCV9PrivilegedRegisterInstruction(String name, int regNum) {
  47         super(name);
  48         this.regNum = regNum;
  49     }
  50 
  51     public int getPrivilegedRegisterNumber() {
  52         return regNum;
  53     }
  54 
  55     public String asString(long currentPc, SymbolFinder symFinder) {
  56         return getDescription();
  57     }
  58 }