Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64GeneralRegister8.java @ 4235:23f41c48b19b
Re-enabled Java cleaning in gate.
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 06 Jan 2012 14:22:57 +0100 |
parents | bc8527f3071c |
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rev | line source |
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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 } |