Mercurial > hg > truffle
annotate graal/com.oracle.max.criutils/src/com/oracle/max/criutils/HexCodeFile.java @ 6421:d855dd01629f
fix to PostOrderBlockIterator: deal with unnecessary BeginNodes
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 19 Sep 2012 12:12:00 +0200 |
parents | 4f9574b2893e |
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1 /* |
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2 * Copyright (c) 2009, 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.oracle.max.criutils; |
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24 |
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25 import java.io.*; |
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26 import java.util.*; |
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27 import java.util.regex.*; |
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28 |
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29 import com.oracle.graal.api.code.*; |
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30 import com.oracle.graal.api.code.CompilationResult.CodeAnnotation; |
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31 import com.oracle.graal.api.code.CompilationResult.CodeComment; |
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32 import com.oracle.graal.api.code.CompilationResult.JumpTable; |
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33 import com.oracle.graal.api.code.CompilationResult.LookupTable; |
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34 |
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35 |
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36 /** |
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37 * A HexCodeFile is a textual format for representing a chunk of machine code along |
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38 * with extra information that can be used to enhance a disassembly of the code. |
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39 * |
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40 * A pseudo grammar for a HexCodeFile is given below. |
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41 * <pre> |
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42 * HexCodeFile ::= Platform Delim HexCode Delim (OptionalSection Delim)* |
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43 * |
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44 * OptionalSection ::= Comment | OperandComment | JumpTable | LookupTable |
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45 * |
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46 * Platform ::= "Platform" ISA WordWidth |
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47 * |
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48 * HexCode ::= "HexCode" StartAddress HexDigits |
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49 * |
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50 * Comment ::= "Comment" Position String |
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51 * |
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52 * OperandComment ::= "OperandComment" Position String |
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53 * |
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54 * JumpTable ::= "JumpTable" Position EntrySize Low High |
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55 * |
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56 * LookupTable ::= "LookupTable" Position NPairs KeySize OffsetSize |
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57 * |
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58 * Position, EntrySize, Low, High, NPairs KeySize OffsetSize ::= int |
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59 * |
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60 * Delim := "<||@" |
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61 * </pre> |
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62 * |
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63 * There must be exactly one HexCode and Platform part in a HexCodeFile. The length of HexDigits must be even |
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64 * as each pair of digits represents a single byte. |
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65 * <p> |
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66 * Below is an example of a valid Code input: |
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67 * <pre> |
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68 * |
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69 * Platform AMD64 64 <||@ |
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70 * HexCode 0 e8000000009090904883ec084889842410d0ffff48893c24e800000000488b3c24488bf0e8000000004883c408c3 <||@ |
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71 * Comment 24 frame-ref-map: +0 {0} |
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72 * at java.lang.String.toLowerCase(String.java:2496) [bci: 1] |
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73 * |0 |
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74 * locals: |stack:0:a |
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75 * stack: |stack:0:a |
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76 * <||@ |
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77 * OperandComment 24 {java.util.Locale.getDefault()} <||@ |
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78 * Comment 36 frame-ref-map: +0 {0} |
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79 * at java.lang.String.toLowerCase(String.java:2496) [bci: 4] |
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80 * |0 |
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81 * locals: |stack:0:a |
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82 * <||@ |
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83 * OperandComment 36 {java.lang.String.toLowerCase(Locale)} <||@ |
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84 * |
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85 * </pre> |
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86 */ |
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87 public class HexCodeFile { |
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88 |
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89 public static final String NEW_LINE = CodeUtil.NEW_LINE; |
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90 public static final String SECTION_DELIM = " <||@"; |
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91 public static final Pattern SECTION = Pattern.compile("(\\S+)\\s+(.*)", Pattern.DOTALL); |
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92 public static final Pattern COMMENT = Pattern.compile("(\\d+)\\s+(.*)", Pattern.DOTALL); |
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93 public static final Pattern OPERAND_COMMENT = COMMENT; |
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94 public static final Pattern JUMP_TABLE = Pattern.compile("(\\d+)\\s+(\\d+)\\s+(-{0,1}\\d+)\\s+(-{0,1}\\d+)\\s*"); |
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95 public static final Pattern LOOKUP_TABLE = Pattern.compile("(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s*"); |
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96 public static final Pattern HEX_CODE = Pattern.compile("(\\p{XDigit}+)(?:\\s+(\\p{XDigit}*))?"); |
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97 public static final Pattern PLATFORM = Pattern.compile("(\\S+)\\s+(\\S+)", Pattern.DOTALL); |
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98 |
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99 /** |
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100 * Delimiter placed before a HexCodeFile when embedded in a string/stream. |
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101 */ |
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102 public static final String EMBEDDED_HCF_OPEN = "<<<HexCodeFile"; |
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103 |
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104 /** |
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105 * Delimiter placed after a HexCodeFile when embedded in a string/stream. |
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106 */ |
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107 public static final String EMBEDDED_HCF_CLOSE = "HexCodeFile>>>"; |
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108 |
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109 /** |
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110 * Map from a machine code position to a list of comments for the position. |
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111 */ |
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112 public final Map<Integer, List<String>> comments = new TreeMap<>(); |
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113 |
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114 /** |
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115 * Map from a machine code position to a comment for the operands of the instruction at the position. |
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116 */ |
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117 public final Map<Integer, String> operandComments = new TreeMap<>(); |
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118 |
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119 public final byte[] code; |
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120 |
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121 public final ArrayList<JumpTable> jumpTables = new ArrayList<>(); |
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122 |
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123 public final ArrayList<LookupTable> lookupTables = new ArrayList<>(); |
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124 |
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125 public final String isa; |
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126 |
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127 public final int wordWidth; |
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128 |
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129 public final long startAddress; |
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130 |
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131 public HexCodeFile(byte[] code, long startAddress, String isa, int wordWidth) { |
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132 this.code = code; |
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133 this.startAddress = startAddress; |
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134 this.isa = isa; |
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135 this.wordWidth = wordWidth; |
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136 } |
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137 |
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138 /** |
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139 * Parses a string in the format produced by {@link #toString()} to produce a {@link HexCodeFile} object. |
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140 */ |
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141 public static HexCodeFile parse(String input, int sourceOffset, String source, String sourceName) { |
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142 return new Parser(input, sourceOffset, source, sourceName).hcf; |
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143 } |
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144 |
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145 /** |
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146 * Formats this HexCodeFile as a string that can be parsed with {@link #parse(String, int, String, String)}. |
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147 */ |
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148 @Override |
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149 public String toString() { |
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150 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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151 writeTo(baos); |
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152 return baos.toString(); |
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153 } |
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154 |
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155 public String toEmbeddedString() { |
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156 return EMBEDDED_HCF_OPEN + NEW_LINE + toString() + EMBEDDED_HCF_CLOSE; |
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157 } |
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158 |
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159 public void writeTo(OutputStream out) { |
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160 PrintStream ps = out instanceof PrintStream ? (PrintStream) out : new PrintStream(out); |
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161 ps.printf("Platform %s %d %s%n", isa, wordWidth, SECTION_DELIM); |
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162 ps.printf("HexCode %x %s %s%n", startAddress, HexCodeFile.hexCodeString(code), SECTION_DELIM); |
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163 |
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164 for (JumpTable table : jumpTables) { |
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165 ps.printf("JumpTable %d %d %d %d %s%n", table.position, table.entrySize, table.low, table.high, SECTION_DELIM); |
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166 } |
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167 |
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168 for (LookupTable table : lookupTables) { |
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169 ps.printf("LookupTable %d %d %d %d %s%n", table.position, table.npairs, table.keySize, table.keySize, SECTION_DELIM); |
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170 } |
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171 |
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172 for (Map.Entry<Integer, List<String>> e : comments.entrySet()) { |
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173 int pos = e.getKey(); |
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174 for (String comment : e.getValue()) { |
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175 ps.printf("Comment %d %s %s%n", pos, comment, SECTION_DELIM); |
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176 } |
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177 } |
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178 |
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179 for (Map.Entry<Integer, String> e : operandComments.entrySet()) { |
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180 ps.printf("OperandComment %d %s %s%n", e.getKey(), e.getValue(), SECTION_DELIM); |
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181 } |
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182 ps.flush(); |
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183 } |
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184 |
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185 |
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186 /** |
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187 * Formats a byte array as a string of hex digits. |
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188 */ |
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189 public static String hexCodeString(byte[] code) { |
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190 StringBuilder sb = new StringBuilder(code.length * 2); |
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191 for (int b : code) { |
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192 String hex = Integer.toHexString(b & 0xff); |
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193 if (hex.length() == 1) { |
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194 sb.append('0'); |
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|
195 } |
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|
196 sb.append(hex); |
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197 } |
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198 return sb.toString(); |
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199 } |
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|
200 |
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|
201 /** |
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202 * Adds a comment to the list of comments for a given position. |
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203 */ |
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204 public void addComment(int pos, String comment) { |
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205 List<String> list = comments.get(pos); |
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206 if (list == null) { |
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207 list = new ArrayList<>(); |
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208 comments.put(pos, list); |
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209 } |
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210 list.add(encodeString(comment)); |
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211 } |
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212 |
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|
213 /** |
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214 * Sets an operand comment for a given position. |
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215 * |
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216 * @return the previous operand comment for {@code pos} |
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217 */ |
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218 public String addOperandComment(int pos, String comment) { |
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219 return operandComments.put(pos, encodeString(comment)); |
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220 } |
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221 |
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|
222 /** |
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223 * Adds any jump tables, lookup tables or code comments from a list of code annotations. |
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224 */ |
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225 public static void addAnnotations(HexCodeFile hcf, List<CodeAnnotation> annotations) { |
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226 if (annotations == null || annotations.isEmpty()) { |
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227 return; |
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228 } |
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229 for (CodeAnnotation a : annotations) { |
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230 if (a instanceof JumpTable) { |
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231 JumpTable table = (JumpTable) a; |
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|
232 hcf.jumpTables.add(table); |
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|
233 } else if (a instanceof LookupTable) { |
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|
234 LookupTable table = (LookupTable) a; |
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235 hcf.lookupTables.add(table); |
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|
236 } else if (a instanceof CodeComment) { |
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237 CodeComment comment = (CodeComment) a; |
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238 hcf.addComment(comment.position, comment.value); |
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239 } |
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240 } |
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241 } |
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242 |
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243 /** |
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244 * Modifies a string to mangle any substrings matching {@link #SECTION_DELIM}. |
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245 */ |
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246 public static String encodeString(String input) { |
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247 int index; |
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248 String s = input; |
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249 while ((index = s.indexOf(SECTION_DELIM)) != -1) { |
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250 s = s.substring(0, index) + " < |@" + s.substring(index + SECTION_DELIM.length()); |
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251 } |
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252 return s; |
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253 } |
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254 |
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255 /** |
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256 * Helper class to parse a string in the format produced by {@link HexCodeFile#toString()} |
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257 * and produce a {@link HexCodeFile} object. |
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258 */ |
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259 static class Parser { |
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260 |
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261 final String input; |
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262 final String inputSource; |
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263 String isa; |
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264 int wordWidth; |
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265 byte[] code; |
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266 long startAddress; |
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267 HexCodeFile hcf; |
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268 |
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269 Parser(String input, int sourceOffset, String source, String sourceName) { |
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270 this.input = input; |
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271 this.inputSource = sourceName; |
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272 parseSections(sourceOffset, source); |
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273 } |
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274 |
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275 void makeHCF() { |
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276 if (hcf == null) { |
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277 if (isa != null && wordWidth != 0 && code != null) { |
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278 hcf = new HexCodeFile(code, startAddress, isa, wordWidth); |
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279 } |
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280 } |
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281 } |
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282 |
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283 void checkHCF(String section, int offset) { |
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284 check(hcf != null, offset, section + " section must be after Platform and HexCode section"); |
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285 } |
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286 |
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287 void check(boolean condition, int offset, String message) { |
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288 if (!condition) { |
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289 error(offset, message); |
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290 } |
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291 } |
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292 |
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293 Error error(int offset, String message) { |
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294 throw new Error(errorMessage(offset, message)); |
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295 } |
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296 |
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297 void warning(int offset, String message) { |
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298 System.err.println("Warning: " + errorMessage(offset, message)); |
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299 } |
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300 |
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301 String errorMessage(int offset, String message) { |
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302 assert offset < input.length(); |
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303 InputPos inputPos = filePos(offset); |
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304 int lineEnd = input.indexOf(HexCodeFile.NEW_LINE, offset); |
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305 int lineStart = offset - inputPos.col; |
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306 String line = lineEnd == -1 ? input.substring(lineStart) : input.substring(lineStart, lineEnd); |
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307 return String.format("%s:%d: %s%n%s%n%" + (inputPos.col + 1) + "s", inputSource, inputPos.line, message, line, "^"); |
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308 } |
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309 |
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310 static class InputPos { |
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311 final int line; |
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312 final int col; |
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313 public InputPos(int line, int col) { |
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314 this.line = line; |
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315 this.col = col; |
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316 } |
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317 } |
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318 |
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319 InputPos filePos(int index) { |
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320 assert input != null; |
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321 int lineStart = input.lastIndexOf(HexCodeFile.NEW_LINE, index) + 1; |
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322 |
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323 String l = input.substring(lineStart, lineStart + 10); |
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324 System.out.println("YYY" + input.substring(index, index + 10) + "..."); |
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325 System.out.println("XXX" + l + "..."); |
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326 |
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327 int pos = input.indexOf(HexCodeFile.NEW_LINE, 0); |
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328 int line = 1; |
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329 while (pos > 0 && pos < index) { |
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330 line++; |
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331 pos = input.indexOf(HexCodeFile.NEW_LINE, pos + 1); |
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332 } |
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333 return new InputPos(line, index - lineStart); |
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334 } |
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335 |
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336 void parseSections(int offset, String source) { |
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337 assert input.startsWith(source, offset); |
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338 int index = 0; |
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339 int endIndex = source.indexOf(SECTION_DELIM); |
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340 while (endIndex != -1) { |
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341 while (source.charAt(index) <= ' ') { |
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342 index++; |
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343 } |
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344 String section = source.substring(index, endIndex).trim(); |
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345 parseSection(offset + index, section); |
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346 index = endIndex + SECTION_DELIM.length(); |
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347 endIndex = source.indexOf(SECTION_DELIM, index); |
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348 } |
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349 } |
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350 |
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351 int parseInt(int offset, String value) { |
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352 try { |
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353 return Integer.parseInt(value); |
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354 } catch (NumberFormatException e) { |
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355 throw error(offset, "Not a valid integer: " + value); |
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356 } |
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357 } |
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358 |
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359 void parseSection(int offset, String section) { |
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360 if (section.isEmpty()) { |
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361 return; |
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362 } |
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363 assert input.startsWith(section, offset); |
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364 Matcher m = HexCodeFile.SECTION.matcher(section); |
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365 check(m.matches(), offset, "Section does not match pattern " + HexCodeFile.SECTION); |
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366 |
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367 String header = m.group(1); |
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368 String body = m.group(2); |
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369 int headerOffset = offset + m.start(1); |
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370 int bodyOffset = offset + m.start(2); |
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371 |
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372 if (header.equals("Platform")) { |
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373 check(isa == null, bodyOffset, "Duplicate Platform section found"); |
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374 m = HexCodeFile.PLATFORM.matcher(body); |
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375 check(m.matches(), bodyOffset, "Platform does not match pattern " + HexCodeFile.PLATFORM); |
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376 isa = m.group(1); |
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377 wordWidth = parseInt(bodyOffset + m.start(2), m.group(2)); |
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378 makeHCF(); |
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379 } else if (header.equals("HexCode")) { |
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380 check(code == null, bodyOffset, "Duplicate Code section found"); |
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381 m = HexCodeFile.HEX_CODE.matcher(body); |
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382 check(m.matches(), bodyOffset, "Code does not match pattern " + HexCodeFile.HEX_CODE); |
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383 String hexAddress = m.group(1); |
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384 startAddress = Long.valueOf(hexAddress, 16); |
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385 String hexCode = m.group(2); |
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386 if (hexCode == null) { |
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387 code = new byte[0]; |
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388 } else { |
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389 check((hexCode.length() % 2) == 0, bodyOffset, "Hex code length must be even"); |
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390 code = new byte[hexCode.length() / 2]; |
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391 for (int i = 0; i < code.length; i++) { |
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392 String hexByte = hexCode.substring(i * 2, (i + 1) * 2); |
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393 code[i] = (byte) Integer.parseInt(hexByte, 16); |
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394 } |
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395 } |
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396 makeHCF(); |
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397 } else if (header.equals("Comment")) { |
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398 checkHCF("Comment", headerOffset); |
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399 m = HexCodeFile.COMMENT.matcher(body); |
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400 check(m.matches(), bodyOffset, "Comment does not match pattern " + HexCodeFile.COMMENT); |
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401 int pos = parseInt(bodyOffset + m.start(1), m.group(1)); |
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402 String comment = m.group(2); |
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403 hcf.addComment(pos, comment); |
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404 } else if (header.equals("OperandComment")) { |
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405 checkHCF("OperandComment", headerOffset); |
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406 m = HexCodeFile.OPERAND_COMMENT.matcher(body); |
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407 check(m.matches(), bodyOffset, "OperandComment does not match pattern " + HexCodeFile.OPERAND_COMMENT); |
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408 int pos = parseInt(bodyOffset + m.start(1), m.group(1)); |
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409 String comment = m.group(2); |
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410 hcf.addOperandComment(pos, comment); |
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411 } else if (header.equals("JumpTable")) { |
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412 checkHCF("JumpTable", headerOffset); |
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413 m = HexCodeFile.JUMP_TABLE.matcher(body); |
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414 check(m.matches(), bodyOffset, "JumpTable does not match pattern " + HexCodeFile.JUMP_TABLE); |
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415 int pos = parseInt(bodyOffset + m.start(1), m.group(1)); |
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416 int entrySize = parseInt(bodyOffset + m.start(2), m.group(2)); |
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417 int low = parseInt(bodyOffset + m.start(3), m.group(3)); |
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418 int high = parseInt(bodyOffset + m.start(4), m.group(4)); |
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419 hcf.jumpTables.add(new JumpTable(pos, low, high, entrySize)); |
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420 } else if (header.equals("LookupTable")) { |
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421 checkHCF("LookupTable", headerOffset); |
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422 m = HexCodeFile.LOOKUP_TABLE.matcher(body); |
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423 check(m.matches(), bodyOffset, "LookupTable does not match pattern " + HexCodeFile.LOOKUP_TABLE); |
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424 int pos = parseInt(bodyOffset + m.start(1), m.group(1)); |
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425 int npairs = parseInt(bodyOffset + m.start(2), m.group(2)); |
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426 int keySize = parseInt(bodyOffset + m.start(3), m.group(3)); |
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427 int offsetSize = parseInt(bodyOffset + m.start(4), m.group(4)); |
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428 hcf.lookupTables.add(new LookupTable(pos, npairs, keySize, offsetSize)); |
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429 } else { |
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430 error(offset, "Unknown section header: " + header); |
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431 } |
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432 } |
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433 } |
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434 } |