Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/Option.java @ 4138:82af018d61db
Merge fixes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 22:03:44 +0100 |
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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 } |