Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/dis/x86/X86Disassembler.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | bc8527f3071c |
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.dis.x86; |
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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 |
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28 import com.sun.max.*; |
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29 import com.sun.max.asm.*; |
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30 import com.sun.max.asm.amd64.*; |
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31 import com.sun.max.asm.dis.*; |
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32 import com.sun.max.asm.gen.*; |
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33 import com.sun.max.asm.gen.cisc.x86.*; |
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34 import com.sun.max.asm.x86.*; |
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35 import com.sun.max.io.*; |
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36 import com.sun.max.lang.*; |
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37 import com.sun.max.program.*; |
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38 import com.sun.max.util.*; |
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39 |
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40 /** |
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41 * An x86 instruction disassembler. |
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42 * |
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43 * The string representation for disassembler output has the following format, |
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44 * which borrows from both Intel and AT&T syntax and differs from either |
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45 * regarding indirect addressing and indexing. |
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46 * |
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47 * Operand order follows Intel syntax: |
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48 * |
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49 * mnemonic argument |
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50 * mnemonic destination, source |
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51 * mnemonic argument1, argument2, argument3 |
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52 * |
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53 * Some mnemonics may have operand size suffixes as in AT&T (gas) syntax. |
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54 * Suffix Intel size Java size # bits |
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55 * ------ ----------- --------- ------ |
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56 * b byte byte 8 |
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57 * w word short 16 |
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58 * l long word int 32 |
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59 * q quad word long 64 |
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60 * |
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61 * Using this AT&T syntax feature, there is no need for operand size indicators |
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62 * (e.g. DWORD PTR) for pointers as in Intel syntax. |
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63 * |
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64 * Registers etc. are named as in Intel syntax, |
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65 * in lower case without AT&T's "%" prefix. |
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66 * |
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67 * Indexing is indicated by '[' and ']', similiar to array access in the Java(TM) Programming Language: |
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68 * |
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69 * base[index], e.g. eax[ebx] |
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70 * |
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71 * Indirect access looks like indexing without a base (or with implicit base 0): |
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72 * |
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73 * [indirect], e.g. [ecx] |
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74 * |
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75 * Displacements are added/subtracted from the index/indirect operand: |
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76 * |
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77 * base[index + displacement], e.g. ebp[eax - 12] |
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78 * [indirect + displacement], e.g. [esi + 100] |
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79 * |
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80 * Scale is displayed as multiplication of the index: |
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81 * |
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82 * [base[index * scale] or base[index * scale + displacement], e.g. ecx[ebx * 4 + 10] |
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83 * |
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84 * A scale of 1 is left implicit, i.e. not printed. |
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85 * Scale literals are the unsigned decimal integer numbers 2, 4, 8. |
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86 * |
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87 * Displacement literals are signed decimal integer numbers. |
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88 * |
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89 * Direct memory references (pointer literals) are unsigned hexadecimal integer numbers, e.g.: |
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90 * |
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91 * [0x12345678], 0x12345678[eax] |
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92 * |
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93 * Immediate operands are unsigned hexadecimal integer numbers, e.g.: |
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94 * |
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95 * 0x12, 0xffff, 0x0, 0x123456789abcdef |
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96 * |
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97 * Offset operands are signed decimal integer numbers, like displacements, but without space between the sign and the number, e.g.: |
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98 * |
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99 * jmp +12 |
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100 * call -2048 |
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101 * |
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102 * RIP (Relative to Instruction Pointer) addressing is a combination of an offset operand and indirect addressing, e.g.: |
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103 * |
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104 * add [+20], eax |
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105 * mov ebx, [-200] |
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106 * |
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107 * The disassembler displays synthetic labels for all target addresses |
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108 * within the disassembled address range that hit the start address of an instruction. |
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109 * Operands that coincide with such a label are displayed with the respective Label prepended. e.g.: |
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110 * |
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111 * jmp L1: +100 |
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112 * adc [L2: +128], ESI |
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113 * |
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114 * @see Disassembler |
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115 * @see X86DisassembledInstruction |
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116 */ |
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117 public abstract class X86Disassembler extends Disassembler { |
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118 |
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119 private X86Assembly<? extends X86Template> assembly; |
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120 |
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121 protected X86Disassembler(ImmediateArgument startAddress, X86Assembly<? extends X86Template> assembly, InlineDataDecoder inlineDataDecoder) { |
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|
122 super(startAddress, Endianness.LITTLE, inlineDataDecoder); |
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parents:
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123 this.assembly = assembly; |
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parents:
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124 } |
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125 |
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126 protected abstract boolean isRexPrefix(HexByte opcode); |
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127 |
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128 private X86InstructionHeader scanInstructionHeader(BufferedInputStream stream, boolean justSkip) throws IOException { |
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129 int byteValue = stream.read(); |
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130 if (byteValue < 0) { |
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131 return null; |
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132 } |
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133 final X86InstructionHeader header = new X86InstructionHeader(); |
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134 |
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135 do { |
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parents:
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136 final HexByte hexByte = HexByte.VALUES.get(byteValue); |
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137 if (header.opcode1 == null) { |
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138 if (hexByte == X86Opcode.ADDRESS_SIZE) { |
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139 header.hasAddressSizePrefix = true; |
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|
140 } else if (hexByte == X86Opcode.OPERAND_SIZE) { |
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|
141 if (header.instructionSelectionPrefix != null) { |
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142 return X86InstructionHeader.INVALID; |
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143 } |
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144 header.instructionSelectionPrefix = hexByte; |
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|
145 } else if (hexByte == X86Opcode.REPE || hexByte == X86Opcode.REPNE) { |
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146 if (header.instructionSelectionPrefix != null) { |
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147 return X86InstructionHeader.INVALID; |
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148 } |
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149 header.instructionSelectionPrefix = hexByte; |
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150 } else if (isRexPrefix(hexByte)) { |
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151 header.rexPrefix = hexByte; |
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152 } else { |
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153 header.opcode1 = hexByte; |
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154 if (hexByte != HexByte._0F) { |
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155 break; |
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156 } |
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|
157 } |
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|
158 } else { |
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|
159 header.opcode2 = hexByte; |
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160 break; |
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|
161 } |
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162 byteValue = stream.read(); |
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163 } while (byteValue >= 0); |
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164 |
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165 if (TRACE && !justSkip) { |
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166 System.out.println("Scanned header: " + header); |
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167 } |
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168 |
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169 return justSkip ? null : header; |
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170 } |
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171 |
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172 private List<Argument> scanArguments(BufferedInputStream stream, X86Template template, X86InstructionHeader header, byte modRMByte, byte sibByte) throws IOException { |
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173 final List<Argument> arguments = new ArrayList<Argument>(); |
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174 final byte rexByte = (header.rexPrefix != null) ? header.rexPrefix.byteValue() : 0; |
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175 for (X86Parameter parameter : template.parameters()) { |
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176 int value = 0; |
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177 switch (parameter.place()) { |
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178 case MOD_REG_REXR: |
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179 value = X86Field.extractRexValue(X86Field.REX_R_BIT_INDEX, rexByte); |
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180 // fall through... |
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181 case MOD_REG: |
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182 value += X86Field.REG.extract(modRMByte); |
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183 break; |
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184 case MOD_RM_REXB: |
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185 value = X86Field.extractRexValue(X86Field.REX_B_BIT_INDEX, rexByte); |
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186 // fall through... |
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187 case MOD_RM: |
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188 value += X86Field.RM.extract(modRMByte); |
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189 break; |
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|
190 case SIB_BASE_REXB: |
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|
191 value = X86Field.extractRexValue(X86Field.REX_B_BIT_INDEX, rexByte); |
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|
192 // fall through... |
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|
193 case SIB_BASE: |
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194 value += X86Field.BASE.extract(sibByte); |
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195 break; |
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|
196 case SIB_INDEX_REXX: |
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197 value = X86Field.extractRexValue(X86Field.REX_X_BIT_INDEX, rexByte); |
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198 // fall through... |
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|
199 case SIB_INDEX: |
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200 value += X86Field.INDEX.extract(sibByte); |
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201 break; |
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|
202 case SIB_SCALE: |
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|
203 value = X86Field.SCALE.extract(sibByte); |
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204 break; |
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|
205 case APPEND: |
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|
206 if (parameter instanceof X86EnumerableParameter) { |
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|
207 final X86EnumerableParameter enumerableParameter = (X86EnumerableParameter) parameter; |
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208 final Enumerator enumerator = enumerableParameter.enumerator(); |
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209 arguments.add((Argument) enumerator.fromValue(endianness().readByte(stream))); |
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|
210 continue; |
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|
211 } |
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|
212 final X86NumericalParameter numericalParameter = (X86NumericalParameter) parameter; |
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213 switch (numericalParameter.width()) { |
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|
214 case BITS_8: |
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215 arguments.add(new Immediate8Argument(endianness().readByte(stream))); |
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|
216 break; |
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|
217 case BITS_16: |
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|
218 arguments.add(new Immediate16Argument(endianness().readShort(stream))); |
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|
219 break; |
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|
220 case BITS_32: |
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|
221 arguments.add(new Immediate32Argument(endianness().readInt(stream))); |
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|
222 break; |
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|
223 case BITS_64: |
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|
224 arguments.add(new Immediate64Argument(endianness().readLong(stream))); |
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|
225 break; |
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|
226 } |
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|
227 continue; |
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parents:
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|
228 case OPCODE1_REXB: |
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|
229 value = X86Field.extractRexValue(X86Field.REX_B_BIT_INDEX, rexByte); |
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parents:
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|
230 // fall through... |
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parents:
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|
231 case OPCODE1: |
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parents:
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|
232 value += header.opcode1.ordinal() & 7; |
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parents:
diff
changeset
|
233 break; |
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|
234 case OPCODE2_REXB: |
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|
235 value = X86Field.extractRexValue(X86Field.REX_B_BIT_INDEX, rexByte); |
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parents:
diff
changeset
|
236 // fall through... |
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|
237 case OPCODE2: |
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|
238 value += header.opcode2.ordinal() & 7; |
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parents:
diff
changeset
|
239 break; |
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parents:
diff
changeset
|
240 } |
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parents:
diff
changeset
|
241 final X86EnumerableParameter enumerableParameter = (X86EnumerableParameter) parameter; |
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diff
changeset
|
242 final Enumerator enumerator = enumerableParameter.enumerator(); |
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parents:
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|
243 if (enumerator == AMD64GeneralRegister8.ENUMERATOR) { |
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parents:
diff
changeset
|
244 arguments.add(AMD64GeneralRegister8.fromValue(value, header.rexPrefix != null)); |
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245 } else { |
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246 arguments.add((Argument) enumerator.fromValue(value)); |
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parents:
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247 } |
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parents:
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|
248 } |
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249 return arguments; |
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parents:
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250 } |
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251 |
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252 private int getModVariantParameterIndex(X86Template template, byte modRMByte, byte sibByte) { |
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253 if (template.modCase() == X86TemplateContext.ModCase.MOD_0 && X86Field.MOD.extract(modRMByte) != X86TemplateContext.ModCase.MOD_0.value()) { |
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254 switch (template.rmCase()) { |
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255 case NORMAL: { |
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parents:
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|
256 if (template.addressSizeAttribute() == WordWidth.BITS_16) { |
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257 if (X86Field.RM.extract(modRMByte) != X86TemplateContext.RMCase.SWORD.value()) { |
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258 return -1; |
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|
259 } |
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260 } else if (X86Field.RM.extract(modRMByte) != X86TemplateContext.RMCase.SDWORD.value()) { |
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261 return -1; |
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262 } |
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263 for (int i = 0; i < template.parameters().size(); i++) { |
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264 switch (template.parameters().get(i).place()) { |
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265 case MOD_RM_REXB: |
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|
266 case MOD_RM: |
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267 return i; |
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268 default: |
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269 break; |
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|
270 } |
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271 } |
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272 break; |
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273 } |
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274 case SIB: { |
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275 if (template.sibBaseCase() == X86TemplateContext.SibBaseCase.GENERAL_REGISTER && X86Field.BASE.extract(sibByte) == 5) { |
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276 for (int i = 0; i < template.parameters().size(); i++) { |
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277 switch (template.parameters().get(i).place()) { |
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|
278 case SIB_BASE_REXB: |
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279 case SIB_BASE: |
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280 return i; |
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281 default: |
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282 break; |
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|
283 } |
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|
284 } |
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|
285 } |
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parents:
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|
286 break; |
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|
287 } |
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|
288 default: { |
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parents:
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|
289 break; |
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|
290 } |
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parents:
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|
291 } |
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|
292 } |
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293 return -1; |
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|
294 } |
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295 |
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|
296 private byte getSibByte(BufferedInputStream stream, X86Template template, byte modRMByte) throws IOException { |
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297 if (template.addressSizeAttribute() == WordWidth.BITS_16) { |
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298 return 0; |
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|
299 } |
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|
300 if (template.hasSibByte()) { |
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301 return endianness().readByte(stream); |
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|
302 } |
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parents:
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|
303 if (template.hasModRMByte() && X86Field.RM.extract(modRMByte) == X86TemplateContext.RMCase.SIB.value() && |
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|
304 X86Field.MOD.extract(modRMByte) != X86TemplateContext.ModCase.MOD_3.value()) { |
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|
305 return endianness().readByte(stream); |
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parents:
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|
306 } |
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parents:
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|
307 return 0; |
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parents:
diff
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|
308 } |
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|
309 |
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parents:
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|
310 protected abstract Map<X86InstructionHeader, List<X86Template>> headerToTemplates(); |
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|
311 |
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|
312 private static int serial; |
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|
313 |
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parents:
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|
314 public DisassembledObject scanInstruction(BufferedInputStream stream, X86InstructionHeader header) throws IOException, AssemblyException { |
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parents:
diff
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|
315 if (header != X86InstructionHeader.INVALID) { |
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parents:
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|
316 serial++; |
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parents:
diff
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|
317 Trace.line(4, "instruction: " + serial); |
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parents:
diff
changeset
|
318 if (header.opcode1 != null) { |
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parents:
diff
changeset
|
319 boolean isFloatingPointEscape = false; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
320 if (X86Opcode.isFloatingPointEscape(header.opcode1)) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
321 final int byte2 = stream.read(); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
322 if (byte2 >= 0xC0) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
323 isFloatingPointEscape = true; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
324 header.opcode2 = HexByte.VALUES.get(byte2); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
325 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
326 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
327 final List<X86Template> templates = headerToTemplates().get(header); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
328 if (templates != null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
329 for (X86Template template : templates) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
330 stream.reset(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
331 scanInstructionHeader(stream, true); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
332 if (isFloatingPointEscape) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
333 stream.read(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
334 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
335 try { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
336 byte modRMByte = 0; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
337 byte sibByte = 0; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
338 int modVariantParameterIndex = -1; |
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parents:
diff
changeset
|
339 List<Argument> arguments = null; |
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parents:
diff
changeset
|
340 if (template.hasModRMByte()) { |
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parents:
diff
changeset
|
341 modRMByte = endianness().readByte(stream); |
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parents:
diff
changeset
|
342 sibByte = getSibByte(stream, template, modRMByte); |
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parents:
diff
changeset
|
343 modVariantParameterIndex = getModVariantParameterIndex(template, modRMByte, sibByte); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
344 if (modVariantParameterIndex >= 0) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
345 final X86Template modVariantTemplate = X86Assembly.getModVariantTemplate(templates, template, template.parameters().get(modVariantParameterIndex).type()); |
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parents:
diff
changeset
|
346 arguments = scanArguments(stream, modVariantTemplate, header, modRMByte, sibByte); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
347 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
348 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
349 if (arguments == null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
350 arguments = scanArguments(stream, template, header, modRMByte, sibByte); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
351 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
352 if (modVariantParameterIndex >= 0) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
353 final Immediate8Argument immediateArgument = (Immediate8Argument) arguments.get(modVariantParameterIndex); |
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parents:
diff
changeset
|
354 if (immediateArgument.value() != 0) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
355 continue; |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
356 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
357 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
358 // Remove the mod variant argument |
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parents:
diff
changeset
|
359 final Argument modVariantArgument = arguments.get(modVariantParameterIndex); |
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parents:
diff
changeset
|
360 final List<Argument> result = new ArrayList<Argument>(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
361 for (Argument argument : arguments) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
362 if (modVariantArgument != argument) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
363 result.add(argument); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
364 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
365 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
366 arguments = result; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
367 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
368 if (!(Utils.indexOfIdentical(arguments, null) != -1)) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
369 byte[] bytes; |
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370 if (true) { |
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371 final Assembler assembler = createAssembler(currentPosition); |
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372 try { |
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373 assembly.assemble(assembler, template, arguments); |
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374 } catch (AssemblyException e) { |
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375 // try the next template |
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376 continue; |
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377 } |
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378 bytes = assembler.toByteArray(); |
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379 } else { // TODO: does not work yet |
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380 final X86TemplateAssembler templateAssembler = new X86TemplateAssembler(template, addressWidth()); |
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381 bytes = templateAssembler.assemble(arguments); |
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382 } |
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383 if (bytes != null) { |
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384 stream.reset(); |
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385 if (Streams.startsWith(stream, bytes)) { |
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386 final DisassembledInstruction disassembledInstruction = createDisassembledInstruction(currentPosition, bytes, template, arguments); |
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387 currentPosition += bytes.length; |
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388 return disassembledInstruction; |
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389 } |
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390 } |
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391 } |
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392 } catch (NoSuchAssemblerMethodError e) { |
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393 // Until the X86TemplateAssembler is complete, only templates for which a generated assembler |
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394 // method exists can be disassembled |
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395 } catch (IOException ioException) { |
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396 // this one did not work, so loop back up and try another template |
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397 } |
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398 } |
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399 } |
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400 } |
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401 if (header.instructionSelectionPrefix == X86Opcode.REPE || header.instructionSelectionPrefix == X86Opcode.REPNE) { |
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402 |
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403 stream.reset(); |
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404 final int size = 1; |
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405 final byte[] data = new byte[size]; |
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406 Streams.readFully(stream, data); |
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|
407 |
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408 final X86InstructionHeader prefixHeader = new X86InstructionHeader(); |
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409 prefixHeader.opcode1 = header.instructionSelectionPrefix; |
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410 final List<X86Template> prefixTemplates = headerToTemplates().get(prefixHeader); |
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411 final X86Template template = Utils.first(prefixTemplates); |
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412 final byte[] bytes = new byte[]{header.instructionSelectionPrefix.byteValue()}; |
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413 List<Argument> empty = Collections.emptyList(); |
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414 final DisassembledInstruction disassembledInstruction = createDisassembledInstruction(currentPosition, bytes, template, empty); |
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415 currentPosition++; |
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416 return disassembledInstruction; |
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|
417 } |
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|
418 } |
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|
419 if (INLINE_INVALID_INSTRUCTIONS_AS_BYTES) { |
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420 stream.reset(); |
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421 final int size = 1; |
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|
422 final byte[] data = new byte[size]; |
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423 Streams.readFully(stream, data); |
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424 final InlineData inlineData = new InlineData(currentPosition, data); |
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425 final DisassembledData disassembledData = createDisassembledDataObjects(inlineData).iterator().next(); |
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changeset
|
426 currentPosition += size; |
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|
427 return disassembledData; |
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|
428 } |
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changeset
|
429 throw new AssemblyException("unknown instruction"); |
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parents:
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changeset
|
430 } |
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diff
changeset
|
431 |
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diff
changeset
|
432 /** |
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|
433 * Creates a disassembled instruction based on a given sequence of bytes, a template and a set of arguments. The |
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|
434 * caller has performed the necessary decoding of the bytes to derive the template and arguments. |
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|
435 * |
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|
436 * @param position the position an instruction stream from which the bytes were read |
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|
437 * @param bytes the bytes of an instruction |
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|
438 * @param template the template that corresponds to the instruction encoded in {@code bytes} |
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|
439 * @param arguments the arguments of the instruction encoded in {@code bytes} |
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440 * @return a disassembled instruction representing the result of decoding {@code bytes} into an instruction |
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|
441 */ |
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diff
changeset
|
442 protected X86DisassembledInstruction createDisassembledInstruction(int position, byte[] bytes, X86Template template, List<Argument> arguments) { |
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|
443 return new X86DisassembledInstruction(this, position, bytes, template, arguments); |
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changeset
|
444 } |
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diff
changeset
|
445 |
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changeset
|
446 private static final int MORE_THAN_ANY_INSTRUCTION_LENGTH = 100; |
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|
447 private static final boolean INLINE_INVALID_INSTRUCTIONS_AS_BYTES = true; |
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parents:
diff
changeset
|
448 |
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parents:
diff
changeset
|
449 @Override |
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parents:
diff
changeset
|
450 public List<DisassembledObject> scanOne0(BufferedInputStream stream) throws IOException, AssemblyException { |
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changeset
|
451 final List<DisassembledObject> disassembledObjects = new ArrayList<DisassembledObject>(); |
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changeset
|
452 stream.mark(MORE_THAN_ANY_INSTRUCTION_LENGTH); |
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parents:
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changeset
|
453 final X86InstructionHeader header = scanInstructionHeader(stream, false); |
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parents:
diff
changeset
|
454 if (header == null) { |
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parents:
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changeset
|
455 throw new AssemblyException("unknown instruction"); |
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parents:
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changeset
|
456 } |
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parents:
diff
changeset
|
457 disassembledObjects.add(scanInstruction(stream, header)); |
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parents:
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changeset
|
458 return disassembledObjects; |
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parents:
diff
changeset
|
459 } |
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parents:
diff
changeset
|
460 |
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parents:
diff
changeset
|
461 @Override |
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diff
changeset
|
462 public List<DisassembledObject> scan0(BufferedInputStream stream) throws IOException, AssemblyException { |
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parents:
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changeset
|
463 final SortedSet<Integer> knownGoodCodePositions = new TreeSet<Integer>(); |
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changeset
|
464 final List<DisassembledObject> result = new ArrayList<DisassembledObject>(); |
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parents:
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changeset
|
465 boolean processingKnownValidCode = true; |
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parents:
diff
changeset
|
466 |
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diff
changeset
|
467 while (true) { |
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parents:
diff
changeset
|
468 while (knownGoodCodePositions.size() > 0 && knownGoodCodePositions.first().intValue() < currentPosition) { |
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parents:
diff
changeset
|
469 knownGoodCodePositions.remove(knownGoodCodePositions.first()); |
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parents:
diff
changeset
|
470 } |
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parents:
diff
changeset
|
471 |
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parents:
diff
changeset
|
472 scanInlineData(stream, result); |
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diff
changeset
|
473 |
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diff
changeset
|
474 stream.mark(MORE_THAN_ANY_INSTRUCTION_LENGTH); |
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parents:
diff
changeset
|
475 |
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parents:
diff
changeset
|
476 final X86InstructionHeader header = scanInstructionHeader(stream, false); |
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parents:
diff
changeset
|
477 if (header == null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
478 return result; |
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parents:
diff
changeset
|
479 } |
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parents:
diff
changeset
|
480 final DisassembledObject disassembledObject = scanInstruction(stream, header); |
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parents:
diff
changeset
|
481 |
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parents:
diff
changeset
|
482 if (knownGoodCodePositions.size() > 0) { |
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parents:
diff
changeset
|
483 final int firstKnownGoodCodePosition = knownGoodCodePositions.first().intValue(); |
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parents:
diff
changeset
|
484 final int startPosition = disassembledObject.startPosition(); |
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parents:
diff
changeset
|
485 if (firstKnownGoodCodePosition > startPosition && firstKnownGoodCodePosition < disassembledObject.endPosition()) { |
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parents:
diff
changeset
|
486 // there is a known valid code location in the middle of this instruction - assume that it is an invalid instruction |
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parents:
diff
changeset
|
487 stream.reset(); |
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parents:
diff
changeset
|
488 final int size = firstKnownGoodCodePosition - startPosition; |
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parents:
diff
changeset
|
489 final byte[] data = new byte[size]; |
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parents:
diff
changeset
|
490 Streams.readFully(stream, data); |
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parents:
diff
changeset
|
491 final InlineData inlineData = new InlineData(startPosition, data); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
492 currentPosition += addDisassembledDataObjects(result, inlineData); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
493 processingKnownValidCode = true; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
494 } else { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
495 result.add(disassembledObject); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
496 if (firstKnownGoodCodePosition == startPosition) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
497 processingKnownValidCode = true; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
498 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
499 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
500 } else { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
501 if (processingKnownValidCode && disassembledObject instanceof DisassembledInstruction) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
502 final DisassembledInstruction disassembledInstruction = (DisassembledInstruction) disassembledObject; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
503 if (isRelativeJumpForward(disassembledInstruction)) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
504 int jumpOffset; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
505 if (Utils.first(disassembledInstruction.arguments()) instanceof Immediate32Argument) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
506 jumpOffset = ((Immediate32Argument) Utils.first(disassembledInstruction.arguments())).value(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
507 } else { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
508 assert Utils.first(disassembledInstruction.arguments()) instanceof Immediate8Argument; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
509 jumpOffset = ((Immediate8Argument) Utils.first(disassembledInstruction.arguments())).value(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
510 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
511 final int targetPosition = disassembledInstruction.endPosition() + jumpOffset; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
512 knownGoodCodePositions.add(targetPosition); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
513 processingKnownValidCode = false; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
514 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
515 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
516 result.add(disassembledObject); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
517 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
518 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
519 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
520 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
521 private boolean isRelativeJumpForward(DisassembledInstruction instruction) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
522 return instruction.template().internalName().equals("jmp") && // check if this is a jump instruction... |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
523 instruction.arguments().size() == 1 && // that accepts one operand... |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
524 ((Utils.first(instruction.arguments()) instanceof Immediate32Argument && // which is a relative offset... |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
525 ((Immediate32Argument) Utils.first(instruction.arguments())).value() >= 0) || // forward in the code stream |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
526 (Utils.first(instruction.arguments()) instanceof Immediate8Argument && // which is a relative offset... |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
527 ((Immediate8Argument) Utils.first(instruction.arguments())).value() >= 0)); // forward in the code stream |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
528 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
529 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
530 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
531 public ImmediateArgument addressForRelativeAddressing(DisassembledInstruction di) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
532 return startAddress().plus(di.endPosition()); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
533 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
534 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
535 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
536 public String mnemonic(DisassembledInstruction di) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
537 return di.template().externalName(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
538 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
539 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
540 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
541 public String operandsToString(DisassembledInstruction di, AddressMapper addressMapper) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
542 final LinkedList<X86Operand> operandQueue = new LinkedList<X86Operand>(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
543 for (Operand operand : di.template().operands()) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
544 operandQueue.add((X86Operand) operand); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
545 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
546 final LinkedList<Argument> argumentQueue = new LinkedList<Argument>(di.arguments()); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
547 String result = ""; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
548 String separator = ""; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
549 while (!operandQueue.isEmpty()) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
550 result += separator + getOperand(di, operandQueue, argumentQueue, addressMapper); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
551 separator = ", "; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
552 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
553 return result; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
554 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
555 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
556 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
557 public String toString(DisassembledInstruction di, AddressMapper addressMapper) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
558 String s = operandsToString(di, addressMapper); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
559 if (s.length() > 0) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
560 s = " " + s; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
561 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
562 return Strings.padLengthWithSpaces(mnemonic(di), 8) + s; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
563 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
564 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
565 private String getSibIndexAndScale(Queue<X86Operand> operands, Queue<Argument> arguments) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
566 X86Parameter parameter = (X86Parameter) operands.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
567 assert parameter.place() == ParameterPlace.SIB_INDEX || parameter.place() == ParameterPlace.SIB_INDEX_REXX; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
568 final String result = arguments.remove().disassembledValue(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
569 parameter = (X86Parameter) operands.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
570 assert parameter.place() == ParameterPlace.SIB_SCALE; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
571 final Scale scale = (Scale) arguments.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
572 if (scale == Scale.SCALE_1) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
573 return result; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
574 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
575 return result + " * " + scale.disassembledValue(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
576 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
577 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
578 private String addition(Argument argument, String space) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
579 assert argument instanceof ImmediateArgument; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
580 final long value = argument.asLong(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
581 final String s = Long.toString(value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
582 if (value >= 0) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
583 return "+" + space + s; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
584 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
585 return "-" + space + s.substring(1); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
586 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
587 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
588 private String getOperand(DisassembledInstruction di, Queue<X86Operand> operands, Queue<Argument> arguments, AddressMapper addressMapper) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
589 final X86Operand operand = operands.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
590 if (operand instanceof ImplicitOperand) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
591 final ImplicitOperand implicitOperand = (ImplicitOperand) operand; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
592 return implicitOperand.argument().disassembledValue(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
593 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
594 final X86Parameter parameter = (X86Parameter) operand; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
595 final Argument argument = arguments.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
596 if (parameter instanceof X86DisplacementParameter) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
597 assert parameter.place() == ParameterPlace.APPEND; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
598 final X86Parameter nextParameter = (X86Parameter) operands.element(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
599 String prefix = ""; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
600 if (IndirectRegister.class.isAssignableFrom(nextParameter.type())) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
601 operands.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
602 prefix += "[" + arguments.remove().disassembledValue(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
603 } else { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
604 if (nextParameter.place() == ParameterPlace.SIB_BASE || nextParameter.place() == ParameterPlace.SIB_BASE_REXB) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
605 operands.remove(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
606 prefix += arguments.remove().disassembledValue(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
607 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
608 prefix += "[" + getSibIndexAndScale(operands, arguments); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
609 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
610 return prefix + " " + addition(argument, " ") + "]"; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
611 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
612 if (parameter.place() == ParameterPlace.SIB_BASE || parameter.place() == ParameterPlace.SIB_BASE_REXB) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
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613 return argument.disassembledValue() + "[" + getSibIndexAndScale(operands, arguments) + "]"; |
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614 } |
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615 if (IndirectRegister.class.isAssignableFrom(parameter.type())) { |
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616 return "[" + argument.disassembledValue() + "]"; |
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617 } |
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618 if (parameter instanceof X86AddressParameter) { |
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619 String address = argument.disassembledValue(); |
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620 final DisassembledLabel label = addressMapper.labelAt((ImmediateArgument) argument); |
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621 if (label != null) { |
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622 address = label.name() + ": " + address; |
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623 } |
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624 final X86Operand nextOperand = operands.peek(); |
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625 if (nextOperand instanceof X86Parameter) { |
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626 final X86Parameter nextParameter = (X86Parameter) nextOperand; |
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627 if (nextParameter.place() == ParameterPlace.SIB_INDEX || nextParameter.place() == ParameterPlace.SIB_INDEX_REXX) { |
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628 return address + "[" + getSibIndexAndScale(operands, arguments) + "]"; |
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629 } |
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630 } |
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631 return "[" + address + "]"; |
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632 } |
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633 if (parameter instanceof X86OffsetParameter) { |
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634 String offset = addition(argument, ""); |
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635 final ImmediateArgument targetAddress = di.addressForRelativeAddressing().plus((ImmediateArgument) argument); |
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636 final DisassembledLabel label = addressMapper.labelAt(targetAddress); |
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637 if (label != null) { |
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638 offset = label.name() + ": " + offset; |
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639 } |
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640 if (((X86Template) di.template()).addressSizeAttribute() == WordWidth.BITS_64 && ((X86Template) di.template()).rmCase() == X86TemplateContext.RMCase.SDWORD) { |
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641 return "[" + offset + "]"; // RIP |
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642 } |
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643 return offset; |
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644 } |
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645 if (parameter.getClass() == X86ImmediateParameter.class) { |
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646 return argument.disassembledValue(); |
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647 } |
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648 return argument.disassembledValue(); |
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649 } |
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650 } |