1 /*

     2  * Copyright (c) 2002, 2003, 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, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * 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 }