1 /*
   2  * Copyright 2002-2003 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.x86;
  26 
  27 import sun.jvm.hotspot.asm.*;
  28 
  29 public abstract class X86Instruction implements Instruction, X86Opcodes {
  30    final private String name;
  31    final private int size;
  32    final private int prefixes;
  33 
  34    public X86Instruction(String name, int size, int prefixes) {
  35       this.name = name;
  36       this.size = size;
  37       this.prefixes = prefixes;
  38    }
  39 
  40    public abstract String asString(long currentPc, SymbolFinder symFinder);
  41 
  42    public String getName() {
  43       return name;
  44    }
  45 
  46    public String getPrefixString() {
  47       StringBuffer buf = new StringBuffer();
  48       if ((prefixes & PREFIX_REPZ) != 0)
  49          buf.append("repz ");
  50       if ((prefixes & PREFIX_REPNZ) != 0)
  51          buf.append("repnz ");
  52       if ((prefixes & PREFIX_LOCK) != 0)
  53          buf.append("lock ");
  54 
  55       return buf.toString();
  56    }
  57 
  58    protected String getOperandAsString(Operand op) {
  59       StringBuffer buf = new StringBuffer();
  60       if ((op instanceof Register) || (op instanceof Address)) {
  61          buf.append(op.toString());
  62       } else {
  63          Number number = ((Immediate)op).getNumber();
  64          buf.append("0x");
  65          buf.append(Integer.toHexString(number.intValue()));
  66       }
  67       return buf.toString();
  68    }
  69 
  70    public int getSize() {
  71       return size;
  72    }
  73 
  74    public boolean isArithmetic() {
  75       return false;
  76    }
  77 
  78    public boolean isBranch() {
  79       return false;
  80    }
  81 
  82    public boolean isCall() {
  83       return false;
  84    }
  85 
  86    public boolean isFloat() {
  87       return false;
  88    }
  89 
  90    public boolean isIllegal() {
  91       return false;
  92    }
  93 
  94    public boolean isLoad() {
  95       return false;
  96    }
  97 
  98    public boolean isLogical() {
  99       return false;
 100    }
 101 
 102    public boolean isMove() {
 103       return false;
 104    }
 105 
 106    public boolean isReturn() {
 107       return false;
 108    }
 109 
 110    public boolean isShift() {
 111       return false;
 112    }
 113 
 114    public boolean isStore() {
 115       return false;
 116    }
 117 
 118    public boolean isTrap() {
 119       return false;
 120    }
 121 
 122    public boolean isNoop() {
 123       return false;
 124    }
 125 
 126    protected static String comma = ", ";
 127    protected static String spaces = "\t";
 128 }