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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/Option.java @ 4138:82af018d61db

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Merge fixes.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 22:03:44 +0100
parents e233f5660da4
children
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1 /*
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.sun.max.asm.gen.risc;
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24
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25 import com.sun.max.asm.gen.risc.field.*;
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26
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27 /**
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28 * An Option is one of the values that an {@link OptionField optional field} can take.
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29 * An example is the value of the <i>predict bit</i> for the SPARC Branch on Equal with
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30 * Prediction instruction that specifies the bit is set. The format of this instruction is:
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31 *
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32 * bge_pt(...) // assembler method
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33 * bge,pt ... // external assembler syntax
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34 */
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35 public class Option {
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36
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37 /**
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38 * The addition to the assembler method's name used to specify this option value.
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39 */
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40 protected final String name;
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41
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42 /**
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43 * The addition to the external assembler syntax used to specify this option value.
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44 */
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45 protected final String externalName;
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46
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47 /**
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48 * The value of the option.
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49 */
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50 protected final int value;
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51
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52 /**
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53 * The field to which this option applies.
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54 */
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55 private final OptionField field;
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56
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57 public String name() {
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58 return name;
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59 }
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60
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61 public String externalName() {
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62 return externalName;
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63 }
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64
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65 public int value() {
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66 return value;
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67 }
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68
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69 public Option() {
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70 this("");
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71 }
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72
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73 public Option(String name) {
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74 this(name, 0);
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75 }
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76
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77 public Option(String name, int value) {
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78 this(name, value, "");
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79 }
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80
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81 public Option(String name, int value, String externalName) {
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82 this(name, value, externalName, null);
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83 }
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84
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85 public Option(String name, int value, String externalName, OptionField field) {
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86 this.name = name;
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87 this.value = value;
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88 this.externalName = externalName;
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89 this.field = field;
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90 }
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91
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92 public OptionField field() {
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93 return field;
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94 }
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95
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96 public boolean isRedundant() {
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97 return (field.defaultOption() != null) && (value == field.defaultOption().value) && (!(equals(field.defaultOption())));
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98 }
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99
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100 @Override
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101 public boolean equals(Object other) {
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102 return other instanceof Option && name.equals(((Option) other).name);
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103 }
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104
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105 @Override
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106 public int hashCode() {
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107 return name.hashCode();
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108 }
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109 }