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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64GeneralRegister8.java @ 4142:bc8527f3071c

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Adjust code base to new level of warnings.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 18 Dec 2011 05:24:06 +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.amd64;
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24
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25 import com.sun.max.asm.x86.*;
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26 import com.sun.max.lang.*;
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27 import com.sun.max.util.*;
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28
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29 /**
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30 */
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31 public enum AMD64GeneralRegister8 implements GeneralRegister<AMD64GeneralRegister8> {
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32
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33 AL(0, false),
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34 CL(1, false),
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35 DL(2, false),
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36 BL(3, false),
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37 SPL(4, false),
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38 BPL(5, false),
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39 SIL(6, false),
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40 DIL(7, false),
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41 R8B(8, false),
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42 R9B(9, false),
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43 R10B(10, false),
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44 R11B(11, false),
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45 R12B(12, false),
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46 R13B(13, false),
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47 R14B(14, false),
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48 R15B(15, false),
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49 AH(4, true),
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50 CH(5, true),
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51 DH(6, true),
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52 BH(7, true);
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53
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54 public static final Enumerator<AMD64GeneralRegister8> ENUMERATOR = new Enumerator<>(AMD64GeneralRegister8.class);
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55
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56 private final int value;
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57 private final boolean isHighByte;
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58
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59 private AMD64GeneralRegister8(int value, boolean isHighByte) {
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60 this.value = value;
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61 this.isHighByte = isHighByte;
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62 }
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63
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64 public static AMD64GeneralRegister8 lowFrom(GeneralRegister generalRegister) {
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65 return ENUMERATOR.get(generalRegister.id());
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66 }
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67
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68 public static AMD64GeneralRegister8 highFrom(GeneralRegister generalRegister) {
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69 return ENUMERATOR.get(generalRegister.id() + 16);
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70 }
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71
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72 public static AMD64GeneralRegister8 fromValue(int value, boolean isRexBytePresent) {
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73 if (!isRexBytePresent && value >= AH.value) {
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74 return ENUMERATOR.get((value - AH.value) + AH.ordinal());
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75 }
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76 return ENUMERATOR.fromValue(value);
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77 }
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78
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79 public boolean isHighByte() {
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80 return isHighByte;
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81 }
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82
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83 public boolean requiresRexPrefix() {
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84 return value >= 4 && !isHighByte;
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85 }
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86
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87 public WordWidth width() {
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88 return WordWidth.BITS_8;
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89 }
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90
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91 public int id() {
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92 return ordinal() % 16;
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93 }
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94
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95 public int value() {
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96 return value;
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97 }
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98
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99 public long asLong() {
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100 return value();
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101 }
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102
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103 public String externalValue() {
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104 return "%" + name().toLowerCase();
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105 }
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106
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107 public String disassembledValue() {
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108 return name().toLowerCase();
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109 }
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110
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111 public Enumerator<AMD64GeneralRegister8> enumerator() {
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112 return ENUMERATOR;
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113 }
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114
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115 public AMD64GeneralRegister8 exampleValue() {
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116 return AL;
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117 }
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118 }