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1 /*
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2 * Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.asm.x86;
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26
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27 import sun.jvm.hotspot.asm.*;
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28
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29 public abstract class X86Instruction implements Instruction, X86Opcodes {
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30 final private String name;
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31 final private int size;
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32 final private int prefixes;
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33
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34 public X86Instruction(String name, int size, int prefixes) {
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35 this.name = name;
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36 this.size = size;
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37 this.prefixes = prefixes;
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38 }
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39
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40 public abstract String asString(long currentPc, SymbolFinder symFinder);
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41
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42 public String getName() {
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43 return name;
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44 }
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45
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46 public String getPrefixString() {
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47 StringBuffer buf = new StringBuffer();
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48 if ((prefixes & PREFIX_REPZ) != 0)
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49 buf.append("repz ");
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50 if ((prefixes & PREFIX_REPNZ) != 0)
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51 buf.append("repnz ");
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52 if ((prefixes & PREFIX_LOCK) != 0)
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53 buf.append("lock ");
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54
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55 return buf.toString();
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56 }
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57
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58 protected String getOperandAsString(Operand op) {
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59 StringBuffer buf = new StringBuffer();
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60 if ((op instanceof Register) || (op instanceof Address)) {
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61 buf.append(op.toString());
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62 } else {
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63 Number number = ((Immediate)op).getNumber();
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64 buf.append("0x");
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65 buf.append(Integer.toHexString(number.intValue()));
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66 }
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67 return buf.toString();
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68 }
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69
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70 public int getSize() {
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71 return size;
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72 }
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73
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74 public boolean isArithmetic() {
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75 return false;
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76 }
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77
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78 public boolean isBranch() {
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79 return false;
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80 }
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81
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82 public boolean isCall() {
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83 return false;
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84 }
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85
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86 public boolean isFloat() {
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87 return false;
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88 }
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89
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90 public boolean isIllegal() {
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91 return false;
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92 }
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93
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94 public boolean isLoad() {
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95 return false;
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96 }
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97
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98 public boolean isLogical() {
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99 return false;
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100 }
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101
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102 public boolean isMove() {
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103 return false;
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104 }
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105
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106 public boolean isReturn() {
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107 return false;
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108 }
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109
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110 public boolean isShift() {
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111 return false;
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112 }
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113
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114 public boolean isStore() {
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115 return false;
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116 }
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117
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118 public boolean isTrap() {
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119 return false;
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120 }
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121
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122 public boolean isNoop() {
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123 return false;
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124 }
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125
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126 protected static String comma = ", ";
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127 protected static String spaces = "\t";
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128 }
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