1 | /* $Id: DBGPlugInWinNt.cpp 76408 2018-12-23 16:38:11Z vboxsync $ */
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2 | /** @file
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3 | * DBGPlugInWindows - Debugger and Guest OS Digger Plugin For Windows NT.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2009-2017 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 |
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19 | /*********************************************************************************************************************************
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20 | * Header Files *
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21 | *********************************************************************************************************************************/
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22 | #define LOG_GROUP LOG_GROUP_DBGF /// @todo add new log group.
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23 | #include "DBGPlugIns.h"
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24 | #include <VBox/vmm/dbgf.h>
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25 | #include <VBox/vmm/cpumctx.h>
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26 | #include <VBox/vmm/mm.h>
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27 | #include <VBox/err.h>
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28 | #include <VBox/param.h>
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29 | #include <iprt/ctype.h>
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30 | #include <iprt/ldr.h>
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31 | #include <iprt/mem.h>
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32 | #include <iprt/path.h>
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33 | #include <iprt/stream.h>
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34 | #include <iprt/string.h>
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35 | #include <iprt/utf16.h>
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36 | #include <iprt/formats/pecoff.h>
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37 | #include <iprt/formats/mz.h>
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38 | #include <iprt/nt/nt-structures.h>
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39 |
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40 |
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41 | /*********************************************************************************************************************************
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42 | * Structures and Typedefs *
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43 | *********************************************************************************************************************************/
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44 |
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45 | /** @name Internal WinNT structures
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46 | * @{ */
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47 | /**
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48 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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49 | * Tested with XP.
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50 | */
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51 | typedef struct NTMTE32
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52 | {
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53 | struct
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54 | {
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55 | uint32_t Flink;
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56 | uint32_t Blink;
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57 | } InLoadOrderLinks,
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58 | InMemoryOrderModuleList,
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59 | InInitializationOrderModuleList;
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60 | uint32_t DllBase;
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61 | uint32_t EntryPoint;
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62 | /** @note This field is not a size in NT 3.1. It's NULL for images loaded by the
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63 | * boot loader, for other images it looks like some kind of pointer. */
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64 | uint32_t SizeOfImage;
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65 | struct
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66 | {
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67 | uint16_t Length;
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68 | uint16_t MaximumLength;
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69 | uint32_t Buffer;
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70 | } FullDllName,
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71 | BaseDllName;
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72 | uint32_t Flags;
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73 | uint16_t LoadCount;
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74 | uint16_t TlsIndex;
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75 | /* ... there is more ... */
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76 | } NTMTE32;
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77 | typedef NTMTE32 *PNTMTE32;
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78 |
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79 | /**
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80 | * PsLoadedModuleList entry for 64-bit NT aka LDR_DATA_TABLE_ENTRY.
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81 | */
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82 | typedef struct NTMTE64
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83 | {
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84 | struct
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85 | {
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86 | uint64_t Flink;
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87 | uint64_t Blink;
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88 | } InLoadOrderLinks, /**< 0x00 */
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89 | InMemoryOrderModuleList, /**< 0x10 */
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90 | InInitializationOrderModuleList; /**< 0x20 */
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91 | uint64_t DllBase; /**< 0x30 */
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92 | uint64_t EntryPoint; /**< 0x38 */
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93 | uint32_t SizeOfImage; /**< 0x40 */
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94 | uint32_t Alignment; /**< 0x44 */
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95 | struct
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96 | {
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97 | uint16_t Length; /**< 0x48,0x58 */
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98 | uint16_t MaximumLength; /**< 0x4a,0x5a */
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99 | uint32_t Alignment; /**< 0x4c,0x5c */
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100 | uint64_t Buffer; /**< 0x50,0x60 */
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101 | } FullDllName, /**< 0x48 */
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102 | BaseDllName; /**< 0x58 */
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103 | uint32_t Flags; /**< 0x68 */
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104 | uint16_t LoadCount; /**< 0x6c */
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105 | uint16_t TlsIndex; /**< 0x6e */
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106 | /* ... there is more ... */
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107 | } NTMTE64;
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108 | typedef NTMTE64 *PNTMTE64;
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109 |
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110 | /** MTE union. */
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111 | typedef union NTMTE
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112 | {
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113 | NTMTE32 vX_32;
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114 | NTMTE64 vX_64;
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115 | } NTMTE;
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116 | typedef NTMTE *PNTMTE;
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117 |
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118 |
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119 | /**
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120 | * The essential bits of the KUSER_SHARED_DATA structure.
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121 | */
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122 | typedef struct NTKUSERSHAREDDATA
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123 | {
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124 | uint32_t TickCountLowDeprecated;
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125 | uint32_t TickCountMultiplier;
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126 | struct
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127 | {
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128 | uint32_t LowPart;
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129 | int32_t High1Time;
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130 | int32_t High2Time;
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131 |
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132 | } InterruptTime,
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133 | SystemTime,
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134 | TimeZoneBias;
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135 | uint16_t ImageNumberLow;
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136 | uint16_t ImageNumberHigh;
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137 | RTUTF16 NtSystemRoot[260];
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138 | uint32_t MaxStackTraceDepth;
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139 | uint32_t CryptoExponent;
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140 | uint32_t TimeZoneId;
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141 | uint32_t LargePageMinimum;
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142 | uint32_t Reserved2[7];
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143 | uint32_t NtProductType;
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144 | uint8_t ProductTypeIsValid;
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145 | uint8_t abPadding[3];
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146 | uint32_t NtMajorVersion;
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147 | uint32_t NtMinorVersion;
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148 | /* uint8_t ProcessorFeatures[64];
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149 | ...
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150 | */
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151 | } NTKUSERSHAREDDATA;
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152 | typedef NTKUSERSHAREDDATA *PNTKUSERSHAREDDATA;
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153 |
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154 | /** KI_USER_SHARED_DATA for i386 */
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155 | #define NTKUSERSHAREDDATA_WINNT32 UINT32_C(0xffdf0000)
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156 | /** KI_USER_SHARED_DATA for AMD64 */
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157 | #define NTKUSERSHAREDDATA_WINNT64 UINT64_C(0xfffff78000000000)
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158 |
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159 | /** NTKUSERSHAREDDATA::NtProductType */
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160 | typedef enum NTPRODUCTTYPE
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161 | {
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162 | kNtProductType_Invalid = 0,
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163 | kNtProductType_WinNt = 1,
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164 | kNtProductType_LanManNt,
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165 | kNtProductType_Server
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166 | } NTPRODUCTTYPE;
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167 |
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168 |
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169 | /** NT image header union. */
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170 | typedef union NTHDRSU
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171 | {
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172 | IMAGE_NT_HEADERS32 vX_32;
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173 | IMAGE_NT_HEADERS64 vX_64;
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174 | } NTHDRS;
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175 | /** Pointer to NT image header union. */
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176 | typedef NTHDRS *PNTHDRS;
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177 | /** Pointer to const NT image header union. */
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178 | typedef NTHDRS const *PCNTHDRS;
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179 |
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180 | /** @} */
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181 |
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182 |
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183 |
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184 | typedef enum DBGDIGGERWINNTVER
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185 | {
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186 | DBGDIGGERWINNTVER_UNKNOWN,
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187 | DBGDIGGERWINNTVER_3_1,
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188 | DBGDIGGERWINNTVER_3_5,
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189 | DBGDIGGERWINNTVER_4_0,
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190 | DBGDIGGERWINNTVER_5_0,
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191 | DBGDIGGERWINNTVER_5_1,
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192 | DBGDIGGERWINNTVER_6_0
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193 | } DBGDIGGERWINNTVER;
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194 |
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195 | /**
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196 | * WinNT guest OS digger instance data.
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197 | */
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198 | typedef struct DBGDIGGERWINNT
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199 | {
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200 | /** Whether the information is valid or not.
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201 | * (For fending off illegal interface method calls.) */
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202 | bool fValid;
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203 | /** 32-bit (true) or 64-bit (false) */
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204 | bool f32Bit;
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205 | /** Set if NT 3.1 was detected.
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206 | * This implies both Misc.VirtualSize and NTMTE32::SizeOfImage are zero. */
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207 | bool fNt31;
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208 |
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209 | /** The NT version. */
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210 | DBGDIGGERWINNTVER enmVer;
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211 | /** NTKUSERSHAREDDATA::NtProductType */
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212 | NTPRODUCTTYPE NtProductType;
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213 | /** NTKUSERSHAREDDATA::NtMajorVersion */
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214 | uint32_t NtMajorVersion;
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215 | /** NTKUSERSHAREDDATA::NtMinorVersion */
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216 | uint32_t NtMinorVersion;
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217 |
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218 | /** The address of the ntoskrnl.exe image. */
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219 | DBGFADDRESS KernelAddr;
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220 | /** The address of the ntoskrnl.exe module table entry. */
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221 | DBGFADDRESS KernelMteAddr;
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222 | /** The address of PsLoadedModuleList. */
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223 | DBGFADDRESS PsLoadedModuleListAddr;
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224 | } DBGDIGGERWINNT;
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225 | /** Pointer to the linux guest OS digger instance data. */
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226 | typedef DBGDIGGERWINNT *PDBGDIGGERWINNT;
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227 |
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228 |
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229 | /**
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230 | * The WinNT digger's loader reader instance data.
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231 | */
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232 | typedef struct DBGDIGGERWINNTRDR
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233 | {
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234 | /** The VM handle (referenced). */
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235 | PUVM pUVM;
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236 | /** The image base. */
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237 | DBGFADDRESS ImageAddr;
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238 | /** The image size. */
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239 | uint32_t cbImage;
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240 | /** The file offset of the SizeOfImage field in the optional header if it
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241 | * needs patching, otherwise set to UINT32_MAX. */
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242 | uint32_t offSizeOfImage;
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243 | /** The correct image size. */
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244 | uint32_t cbCorrectImageSize;
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245 | /** Number of entries in the aMappings table. */
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246 | uint32_t cMappings;
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247 | /** Mapping hint. */
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248 | uint32_t iHint;
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249 | /** Mapping file offset to memory offsets, ordered by file offset. */
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250 | struct
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251 | {
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252 | /** The file offset. */
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253 | uint32_t offFile;
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254 | /** The size of this mapping. */
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255 | uint32_t cbMem;
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256 | /** The offset to the memory from the start of the image. */
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257 | uint32_t offMem;
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258 | } aMappings[1];
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259 | } DBGDIGGERWINNTRDR;
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260 | /** Pointer a WinNT loader reader instance data. */
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261 | typedef DBGDIGGERWINNTRDR *PDBGDIGGERWINNTRDR;
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262 |
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263 |
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264 | /*********************************************************************************************************************************
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265 | * Defined Constants And Macros *
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266 | *********************************************************************************************************************************/
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267 | /** Validates a 32-bit Windows NT kernel address */
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268 | #define WINNT32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x80000000) && (Addr) < UINT32_C(0xfffff000))
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269 | /** Validates a 64-bit Windows NT kernel address */
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270 | #define WINNT64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffff800000000000) && (Addr) < UINT64_C(0xfffffffffffff000))
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271 | /** Validates a kernel address. */
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272 | #define WINNT_VALID_ADDRESS(pThis, Addr) ((pThis)->f32Bit ? WINNT32_VALID_ADDRESS(Addr) : WINNT64_VALID_ADDRESS(Addr))
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273 | /** Versioned and bitness wrapper. */
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274 | #define WINNT_UNION(pThis, pUnion, Member) ((pThis)->f32Bit ? (pUnion)->vX_32. Member : (pUnion)->vX_64. Member )
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275 |
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276 | /** The length (in chars) of the kernel file name (no path). */
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277 | #define WINNT_KERNEL_BASE_NAME_LEN 12
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278 |
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279 | /** WindowsNT on little endian ASCII systems. */
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280 | #define DIG_WINNT_MOD_TAG UINT64_C(0x54696e646f774e54)
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281 |
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282 |
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283 | /*********************************************************************************************************************************
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284 | * Internal Functions *
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285 | *********************************************************************************************************************************/
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286 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData);
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287 |
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288 |
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289 | /*********************************************************************************************************************************
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290 | * Global Variables *
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291 | *********************************************************************************************************************************/
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292 | /** Kernel names. */
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293 | static const RTUTF16 g_wszKernelNames[][WINNT_KERNEL_BASE_NAME_LEN + 1] =
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294 | {
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295 | { 'n', 't', 'o', 's', 'k', 'r', 'n', 'l', '.', 'e', 'x', 'e' }
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296 | };
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297 |
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298 |
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299 |
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300 | /**
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301 | * Process a PE image found in guest memory.
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302 | *
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303 | * @param pThis The instance data.
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304 | * @param pUVM The user mode VM handle.
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305 | * @param pszName The module name.
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306 | * @param pszFilename The image filename.
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307 | * @param pImageAddr The image address.
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308 | * @param cbImage The size of the image.
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309 | */
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310 | static void dbgDiggerWinNtProcessImage(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName, const char *pszFilename,
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311 | PCDBGFADDRESS pImageAddr, uint32_t cbImage)
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312 | {
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313 | LogFlow(("DigWinNt: %RGp %#x %s\n", pImageAddr->FlatPtr, cbImage, pszName));
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314 |
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315 | /*
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316 | * Do some basic validation first.
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317 | */
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318 | if ( (cbImage < sizeof(IMAGE_NT_HEADERS64) && !pThis->fNt31)
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319 | || cbImage >= _1M * 256)
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320 | {
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321 | Log(("DigWinNt: %s: Bad image size: %#x\n", pszName, cbImage));
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322 | return;
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323 | }
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324 |
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325 | /*
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326 | * Use the common in-memory module reader to create a debug module.
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327 | */
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328 | RTERRINFOSTATIC ErrInfo;
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329 | RTDBGMOD hDbgMod = NIL_RTDBGMOD;
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330 | int rc = DBGFR3ModInMem(pUVM, pImageAddr, pThis->fNt31 ? DBGFMODINMEM_F_PE_NT31 : 0, pszName, pszFilename,
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331 | pThis->f32Bit ? RTLDRARCH_X86_32 : RTLDRARCH_AMD64, cbImage,
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332 | &hDbgMod, RTErrInfoInitStatic(&ErrInfo));
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333 | if (RT_SUCCESS(rc))
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334 | {
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335 | /*
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336 | * Tag the module.
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337 | */
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338 | rc = RTDbgModSetTag(hDbgMod, DIG_WINNT_MOD_TAG);
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339 | AssertRC(rc);
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340 |
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341 | /*
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342 | * Link the module.
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343 | */
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344 | RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
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345 | if (hAs != NIL_RTDBGAS)
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346 | rc = RTDbgAsModuleLink(hAs, hDbgMod, pImageAddr->FlatPtr, RTDBGASLINK_FLAGS_REPLACE /*fFlags*/);
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347 | else
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348 | rc = VERR_INTERNAL_ERROR;
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349 | RTDbgModRelease(hDbgMod);
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350 | RTDbgAsRelease(hAs);
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351 | }
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352 | else if (RTErrInfoIsSet(&ErrInfo.Core))
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353 | Log(("DigWinNt: %s: DBGFR3ModInMem failed: %Rrc - %s\n", pszName, rc, ErrInfo.Core.pszMsg));
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354 | else
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355 | Log(("DigWinNt: %s: DBGFR3ModInMem failed: %Rrc\n", pszName, rc));
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356 | }
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357 |
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358 |
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359 | /**
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360 | * Generate a debugger compatible module name from a filename.
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361 | *
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362 | * @returns Pointer to module name (doesn't need to be pszName).
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363 | * @param pszFilename The source filename.
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364 | * @param pszName Buffer to put the module name in.
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365 | * @param cbName Buffer size.
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366 | */
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367 | static const char *dbgDiggerWintNtFilenameToModuleName(const char *pszFilename, char *pszName, size_t cbName)
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368 | {
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369 | /* Skip to the filename part of the filename. :-) */
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370 | pszFilename = RTPathFilenameEx(pszFilename, RTPATH_STR_F_STYLE_DOS);
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371 |
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372 | /* We try use 'nt' for the kernel. */
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373 | if ( RTStrICmpAscii(pszFilename, "ntoskrnl.exe") == 0
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374 | || RTStrICmpAscii(pszFilename, "ntkrnlmp.exe") == 0)
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375 | return "nt";
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376 |
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377 |
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378 | /* Drop the extension if .dll or .sys. */
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379 | size_t cchFilename = strlen(pszFilename);
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380 | if ( cchFilename > 4
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381 | && pszFilename[cchFilename - 4] == '.')
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382 | {
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383 | if ( RTStrICmpAscii(&pszFilename[cchFilename - 4], ".sys") == 0
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384 | || RTStrICmpAscii(&pszFilename[cchFilename - 4], ".dll") == 0)
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385 | cchFilename -= 4;
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386 | }
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387 |
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388 | /* Copy and do replacements. */
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389 | if (cchFilename >= cbName)
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390 | cchFilename = cbName - 1;
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391 | size_t off;
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392 | for (off = 0; off < cchFilename; off++)
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393 | {
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394 | char ch = pszFilename[off];
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395 | if (!RT_C_IS_ALNUM(ch))
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396 | ch = '_';
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397 | pszName[off] = ch;
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398 | }
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399 | pszName[off] = '\0';
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400 | return pszName;
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401 | }
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402 |
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403 |
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404 | /**
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405 | * @copydoc DBGFOSREG::pfnStackUnwindAssist
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406 | */
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407 | static DECLCALLBACK(int) dbgDiggerWinNtStackUnwindAssist(PUVM pUVM, void *pvData, VMCPUID idCpu, PDBGFSTACKFRAME pFrame,
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408 | PRTDBGUNWINDSTATE pState, PCCPUMCTX pInitialCtx, RTDBGAS hAs,
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409 | uint64_t *puScratch)
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410 | {
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411 | Assert(pInitialCtx);
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412 |
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413 | /*
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414 | * We want to locate trap frames here. The trap frame structure contains
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415 | * the 64-bit IRET frame, so given unwind information it's easy to identify
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416 | * using the return type and frame address.
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417 | */
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418 | if (pFrame->fFlags & DBGFSTACKFRAME_FLAGS_64BIT)
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419 | {
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420 | /*
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421 | * Is this a trap frame? If so, try read the trap frame.
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422 | */
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423 | if ( pFrame->enmReturnType == RTDBGRETURNTYPE_IRET64
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424 | && !(pFrame->AddrFrame.FlatPtr & 0x7)
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425 | && WINNT64_VALID_ADDRESS(pFrame->AddrFrame.FlatPtr) )
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426 | {
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427 | KTRAP_FRAME_AMD64 TrapFrame;
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428 | RT_ZERO(TrapFrame);
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429 | uint64_t const uTrapFrameAddr = pFrame->AddrFrame.FlatPtr
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430 | - RT_UOFFSETOF(KTRAP_FRAME_AMD64, ErrCdOrXcptFrameOrS);
|
---|
431 | int rc = pState->pfnReadStack(pState, uTrapFrameAddr, sizeof(TrapFrame), &TrapFrame);
|
---|
432 | if (RT_SUCCESS(rc))
|
---|
433 | {
|
---|
434 | /* Valid? Not too much else we can check here (EFlags isn't
|
---|
435 | reliable in manually construct frames). */
|
---|
436 | if (TrapFrame.ExceptionActive <= 2)
|
---|
437 | {
|
---|
438 | pFrame->fFlags |= DBGFSTACKFRAME_FLAGS_TRAP_FRAME;
|
---|
439 |
|
---|
440 | /*
|
---|
441 | * Add sure 'register' information from the frame to the frame.
|
---|
442 | *
|
---|
443 | * To avoid code duplication, we do this in two steps in a loop.
|
---|
444 | * The first iteration only figures out how many registers we're
|
---|
445 | * going to save and allocates room for them. The second iteration
|
---|
446 | * does the actual adding.
|
---|
447 | */
|
---|
448 | uint32_t cRegs = pFrame->cSureRegs;
|
---|
449 | PDBGFREGVALEX paSureRegs = NULL;
|
---|
450 | #define ADD_REG_NAMED(a_Type, a_ValMemb, a_Value, a_pszName) do { \
|
---|
451 | if (paSureRegs) \
|
---|
452 | { \
|
---|
453 | paSureRegs[iReg].pszName = a_pszName;\
|
---|
454 | paSureRegs[iReg].enmReg = DBGFREG_END; \
|
---|
455 | paSureRegs[iReg].enmType = a_Type; \
|
---|
456 | paSureRegs[iReg].Value.a_ValMemb = (a_Value); \
|
---|
457 | } \
|
---|
458 | iReg++; \
|
---|
459 | } while (0)
|
---|
460 | #define MAYBE_ADD_GREG(a_Value, a_enmReg, a_idxReg) do { \
|
---|
461 | if (!(pState->u.x86.Loaded.s.fRegs & RT_BIT(a_idxReg))) \
|
---|
462 | { \
|
---|
463 | if (paSureRegs) \
|
---|
464 | { \
|
---|
465 | pState->u.x86.Loaded.s.fRegs |= RT_BIT(a_idxReg); \
|
---|
466 | pState->u.x86.auRegs[a_idxReg] = (a_Value); \
|
---|
467 | paSureRegs[iReg].Value.u64 = (a_Value); \
|
---|
468 | paSureRegs[iReg].enmReg = a_enmReg; \
|
---|
469 | paSureRegs[iReg].enmType = DBGFREGVALTYPE_U64; \
|
---|
470 | paSureRegs[iReg].pszName = NULL; \
|
---|
471 | } \
|
---|
472 | iReg++; \
|
---|
473 | } \
|
---|
474 | } while (0)
|
---|
475 | for (unsigned iLoop = 0; iLoop < 2; iLoop++)
|
---|
476 | {
|
---|
477 | uint32_t iReg = pFrame->cSureRegs;
|
---|
478 | ADD_REG_NAMED(DBGFREGVALTYPE_U64, u64, uTrapFrameAddr, "TrapFrame");
|
---|
479 | ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, TrapFrame.ExceptionActive, "ExceptionActive");
|
---|
480 | if (TrapFrame.ExceptionActive == 0)
|
---|
481 | {
|
---|
482 | ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, TrapFrame.PreviousIrql, "PrevIrql");
|
---|
483 | ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, (uint8_t)TrapFrame.ErrCdOrXcptFrameOrS, "IntNo");
|
---|
484 | }
|
---|
485 | else if ( TrapFrame.ExceptionActive == 1
|
---|
486 | && TrapFrame.FaultIndicator == ((TrapFrame.ErrCdOrXcptFrameOrS >> 1) & 0x9))
|
---|
487 | ADD_REG_NAMED(DBGFREGVALTYPE_U64, u64, TrapFrame.FaultAddrOrCtxRecOrTS, "cr2-probably");
|
---|
488 | if (TrapFrame.SegCs & X86_SEL_RPL)
|
---|
489 | ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, 1, "UserMode");
|
---|
490 | else
|
---|
491 | ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, 1, "KernelMode");
|
---|
492 | if (TrapFrame.ExceptionActive <= 1)
|
---|
493 | {
|
---|
494 | MAYBE_ADD_GREG(TrapFrame.Rax, DBGFREG_RAX, X86_GREG_xAX);
|
---|
495 | MAYBE_ADD_GREG(TrapFrame.Rcx, DBGFREG_RCX, X86_GREG_xCX);
|
---|
496 | MAYBE_ADD_GREG(TrapFrame.Rdx, DBGFREG_RDX, X86_GREG_xDX);
|
---|
497 | MAYBE_ADD_GREG(TrapFrame.R8, DBGFREG_R8, X86_GREG_x8);
|
---|
498 | MAYBE_ADD_GREG(TrapFrame.R9, DBGFREG_R9, X86_GREG_x9);
|
---|
499 | MAYBE_ADD_GREG(TrapFrame.R10, DBGFREG_R10, X86_GREG_x10);
|
---|
500 | MAYBE_ADD_GREG(TrapFrame.R11, DBGFREG_R11, X86_GREG_x11);
|
---|
501 | }
|
---|
502 | else if (TrapFrame.ExceptionActive == 2)
|
---|
503 | {
|
---|
504 | MAYBE_ADD_GREG(TrapFrame.Rbx, DBGFREG_RBX, X86_GREG_xBX);
|
---|
505 | MAYBE_ADD_GREG(TrapFrame.Rsi, DBGFREG_RSI, X86_GREG_xSI);
|
---|
506 | MAYBE_ADD_GREG(TrapFrame.Rdi, DBGFREG_RDI, X86_GREG_xDI);
|
---|
507 | }
|
---|
508 | // MAYBE_ADD_GREG(TrapFrame.Rbp, DBGFREG_RBP, X86_GREG_xBP); - KiInterrupt[Sub]Dispatch* may leave this invalid.
|
---|
509 |
|
---|
510 | /* Done? */
|
---|
511 | if (iLoop > 0)
|
---|
512 | {
|
---|
513 | Assert(cRegs == iReg);
|
---|
514 | break;
|
---|
515 | }
|
---|
516 |
|
---|
517 | /* Resize the array, zeroing the extension. */
|
---|
518 | if (pFrame->cSureRegs)
|
---|
519 | paSureRegs = (PDBGFREGVALEX)MMR3HeapRealloc(pFrame->paSureRegs, iReg * sizeof(paSureRegs[0]));
|
---|
520 | else
|
---|
521 | paSureRegs = (PDBGFREGVALEX)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_STACK, iReg * sizeof(paSureRegs[0]));
|
---|
522 | AssertReturn(paSureRegs, VERR_NO_MEMORY);
|
---|
523 |
|
---|
524 | pFrame->paSureRegs = paSureRegs;
|
---|
525 | RT_BZERO(&paSureRegs[pFrame->cSureRegs], (iReg - pFrame->cSureRegs) * sizeof(paSureRegs[0]));
|
---|
526 | cRegs = iReg;
|
---|
527 | }
|
---|
528 | #undef ADD_REG_NAMED
|
---|
529 | #undef MAYBE_ADD_GREG
|
---|
530 |
|
---|
531 | /* Commit the register update. */
|
---|
532 | pFrame->cSureRegs = cRegs;
|
---|
533 | }
|
---|
534 | }
|
---|
535 | }
|
---|
536 | }
|
---|
537 |
|
---|
538 | RT_NOREF(pUVM, pvData, idCpu, hAs, pInitialCtx, puScratch);
|
---|
539 | return VINF_SUCCESS;
|
---|
540 | }
|
---|
541 |
|
---|
542 |
|
---|
543 | /**
|
---|
544 | * @copydoc DBGFOSREG::pfnQueryInterface
|
---|
545 | */
|
---|
546 | static DECLCALLBACK(void *) dbgDiggerWinNtQueryInterface(PUVM pUVM, void *pvData, DBGFOSINTERFACE enmIf)
|
---|
547 | {
|
---|
548 | RT_NOREF3(pUVM, pvData, enmIf);
|
---|
549 | return NULL;
|
---|
550 | }
|
---|
551 |
|
---|
552 |
|
---|
553 | /**
|
---|
554 | * @copydoc DBGFOSREG::pfnQueryVersion
|
---|
555 | */
|
---|
556 | static DECLCALLBACK(int) dbgDiggerWinNtQueryVersion(PUVM pUVM, void *pvData, char *pszVersion, size_t cchVersion)
|
---|
557 | {
|
---|
558 | RT_NOREF1(pUVM);
|
---|
559 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
560 | Assert(pThis->fValid);
|
---|
561 | const char *pszNtProductType;
|
---|
562 | switch (pThis->NtProductType)
|
---|
563 | {
|
---|
564 | case kNtProductType_WinNt: pszNtProductType = "-WinNT"; break;
|
---|
565 | case kNtProductType_LanManNt: pszNtProductType = "-LanManNT"; break;
|
---|
566 | case kNtProductType_Server: pszNtProductType = "-Server"; break;
|
---|
567 | default: pszNtProductType = ""; break;
|
---|
568 | }
|
---|
569 | RTStrPrintf(pszVersion, cchVersion, "%u.%u-%s%s", pThis->NtMajorVersion, pThis->NtMinorVersion,
|
---|
570 | pThis->f32Bit ? "x86" : "AMD64", pszNtProductType);
|
---|
571 | return VINF_SUCCESS;
|
---|
572 | }
|
---|
573 |
|
---|
574 |
|
---|
575 | /**
|
---|
576 | * @copydoc DBGFOSREG::pfnTerm
|
---|
577 | */
|
---|
578 | static DECLCALLBACK(void) dbgDiggerWinNtTerm(PUVM pUVM, void *pvData)
|
---|
579 | {
|
---|
580 | RT_NOREF1(pUVM);
|
---|
581 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
582 | Assert(pThis->fValid);
|
---|
583 |
|
---|
584 | /*
|
---|
585 | * As long as we're using our private LDR reader implementation,
|
---|
586 | * we must unlink and ditch the modules we created.
|
---|
587 | */
|
---|
588 | RTDBGAS hDbgAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
589 | if (hDbgAs != NIL_RTDBGAS)
|
---|
590 | {
|
---|
591 | uint32_t iMod = RTDbgAsModuleCount(hDbgAs);
|
---|
592 | while (iMod-- > 0)
|
---|
593 | {
|
---|
594 | RTDBGMOD hMod = RTDbgAsModuleByIndex(hDbgAs, iMod);
|
---|
595 | if (hMod != NIL_RTDBGMOD)
|
---|
596 | {
|
---|
597 | if (RTDbgModGetTag(hMod) == DIG_WINNT_MOD_TAG)
|
---|
598 | {
|
---|
599 | int rc = RTDbgAsModuleUnlink(hDbgAs, hMod);
|
---|
600 | AssertRC(rc);
|
---|
601 | }
|
---|
602 | RTDbgModRelease(hMod);
|
---|
603 | }
|
---|
604 | }
|
---|
605 | RTDbgAsRelease(hDbgAs);
|
---|
606 | }
|
---|
607 |
|
---|
608 | pThis->fValid = false;
|
---|
609 | }
|
---|
610 |
|
---|
611 |
|
---|
612 | /**
|
---|
613 | * @copydoc DBGFOSREG::pfnRefresh
|
---|
614 | */
|
---|
615 | static DECLCALLBACK(int) dbgDiggerWinNtRefresh(PUVM pUVM, void *pvData)
|
---|
616 | {
|
---|
617 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
618 | NOREF(pThis);
|
---|
619 | Assert(pThis->fValid);
|
---|
620 |
|
---|
621 | /*
|
---|
622 | * For now we'll flush and reload everything.
|
---|
623 | */
|
---|
624 | dbgDiggerWinNtTerm(pUVM, pvData);
|
---|
625 |
|
---|
626 | return dbgDiggerWinNtInit(pUVM, pvData);
|
---|
627 | }
|
---|
628 |
|
---|
629 |
|
---|
630 | /**
|
---|
631 | * @copydoc DBGFOSREG::pfnInit
|
---|
632 | */
|
---|
633 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData)
|
---|
634 | {
|
---|
635 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
636 | Assert(!pThis->fValid);
|
---|
637 |
|
---|
638 | union
|
---|
639 | {
|
---|
640 | uint8_t au8[0x2000];
|
---|
641 | RTUTF16 wsz[0x2000/2];
|
---|
642 | NTKUSERSHAREDDATA UserSharedData;
|
---|
643 | } u;
|
---|
644 | DBGFADDRESS Addr;
|
---|
645 | int rc;
|
---|
646 |
|
---|
647 | /*
|
---|
648 | * Figure the NT version.
|
---|
649 | */
|
---|
650 | DBGFR3AddrFromFlat(pUVM, &Addr, pThis->f32Bit ? NTKUSERSHAREDDATA_WINNT32 : NTKUSERSHAREDDATA_WINNT64);
|
---|
651 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &u, PAGE_SIZE);
|
---|
652 | if (RT_SUCCESS(rc))
|
---|
653 | {
|
---|
654 | pThis->NtProductType = u.UserSharedData.ProductTypeIsValid && u.UserSharedData.NtProductType <= kNtProductType_Server
|
---|
655 | ? (NTPRODUCTTYPE)u.UserSharedData.NtProductType
|
---|
656 | : kNtProductType_Invalid;
|
---|
657 | pThis->NtMajorVersion = u.UserSharedData.NtMajorVersion;
|
---|
658 | pThis->NtMinorVersion = u.UserSharedData.NtMinorVersion;
|
---|
659 | }
|
---|
660 | else if (pThis->fNt31)
|
---|
661 | {
|
---|
662 | pThis->NtProductType = kNtProductType_WinNt;
|
---|
663 | pThis->NtMajorVersion = 3;
|
---|
664 | pThis->NtMinorVersion = 1;
|
---|
665 | }
|
---|
666 | else
|
---|
667 | {
|
---|
668 | Log(("DigWinNt: Error reading KUSER_SHARED_DATA: %Rrc\n", rc));
|
---|
669 | return rc;
|
---|
670 | }
|
---|
671 |
|
---|
672 | /*
|
---|
673 | * Dig out the module chain.
|
---|
674 | */
|
---|
675 | DBGFADDRESS AddrPrev = pThis->PsLoadedModuleListAddr;
|
---|
676 | Addr = pThis->KernelMteAddr;
|
---|
677 | do
|
---|
678 | {
|
---|
679 | /* Read the validate the MTE. */
|
---|
680 | NTMTE Mte;
|
---|
681 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &Mte, pThis->f32Bit ? sizeof(Mte.vX_32) : sizeof(Mte.vX_64));
|
---|
682 | if (RT_FAILURE(rc))
|
---|
683 | break;
|
---|
684 | if (WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Blink) != AddrPrev.FlatPtr)
|
---|
685 | {
|
---|
686 | Log(("DigWinNt: Bad Mte At %RGv - backpointer\n", Addr.FlatPtr));
|
---|
687 | break;
|
---|
688 | }
|
---|
689 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink)) )
|
---|
690 | {
|
---|
691 | Log(("DigWinNt: Bad Mte at %RGv - forward pointer\n", Addr.FlatPtr));
|
---|
692 | break;
|
---|
693 | }
|
---|
694 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)))
|
---|
695 | {
|
---|
696 | Log(("DigWinNt: Bad Mte at %RGv - BaseDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)));
|
---|
697 | break;
|
---|
698 | }
|
---|
699 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)))
|
---|
700 | {
|
---|
701 | Log(("DigWinNt: Bad Mte at %RGv - FullDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)));
|
---|
702 | break;
|
---|
703 | }
|
---|
704 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, DllBase)))
|
---|
705 | {
|
---|
706 | Log(("DigWinNt: Bad Mte at %RGv - DllBase=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, DllBase) ));
|
---|
707 | break;
|
---|
708 | }
|
---|
709 |
|
---|
710 | uint32_t const cbImageMte = !pThis->fNt31 ? WINNT_UNION(pThis, &Mte, SizeOfImage) : 0;
|
---|
711 | if ( !pThis->fNt31
|
---|
712 | && ( cbImageMte > _256M
|
---|
713 | || WINNT_UNION(pThis, &Mte, EntryPoint) - WINNT_UNION(pThis, &Mte, DllBase) > cbImageMte) )
|
---|
714 | {
|
---|
715 | Log(("DigWinNt: Bad Mte at %RGv - EntryPoint=%llx SizeOfImage=%x DllBase=%llx\n",
|
---|
716 | Addr.FlatPtr, WINNT_UNION(pThis, &Mte, EntryPoint), cbImageMte, WINNT_UNION(pThis, &Mte, DllBase)));
|
---|
717 | break;
|
---|
718 | }
|
---|
719 |
|
---|
720 | /* Read the full name. */
|
---|
721 | DBGFADDRESS AddrName;
|
---|
722 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, FullDllName.Buffer));
|
---|
723 | uint16_t cbName = WINNT_UNION(pThis, &Mte, FullDllName.Length);
|
---|
724 | if (cbName < sizeof(u))
|
---|
725 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
726 | else
|
---|
727 | rc = VERR_OUT_OF_RANGE;
|
---|
728 | if (RT_FAILURE(rc))
|
---|
729 | {
|
---|
730 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer));
|
---|
731 | cbName = WINNT_UNION(pThis, &Mte, BaseDllName.Length);
|
---|
732 | if (cbName < sizeof(u))
|
---|
733 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
734 | else
|
---|
735 | rc = VERR_OUT_OF_RANGE;
|
---|
736 | }
|
---|
737 | if (RT_SUCCESS(rc))
|
---|
738 | {
|
---|
739 | u.wsz[cbName / 2] = '\0';
|
---|
740 |
|
---|
741 | char *pszFilename;
|
---|
742 | rc = RTUtf16ToUtf8(u.wsz, &pszFilename);
|
---|
743 | if (RT_SUCCESS(rc))
|
---|
744 | {
|
---|
745 | char szModName[128];
|
---|
746 | const char *pszModName = dbgDiggerWintNtFilenameToModuleName(pszFilename, szModName, sizeof(szModName));
|
---|
747 |
|
---|
748 | /* Read the start of the PE image and pass it along to a worker. */
|
---|
749 | DBGFADDRESS ImageAddr;
|
---|
750 | DBGFR3AddrFromFlat(pUVM, &ImageAddr, WINNT_UNION(pThis, &Mte, DllBase));
|
---|
751 | dbgDiggerWinNtProcessImage(pThis, pUVM, pszModName, pszFilename, &ImageAddr, cbImageMte);
|
---|
752 | RTStrFree(pszFilename);
|
---|
753 | }
|
---|
754 | }
|
---|
755 |
|
---|
756 | /* next */
|
---|
757 | AddrPrev = Addr;
|
---|
758 | DBGFR3AddrFromFlat(pUVM, &Addr, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink));
|
---|
759 | } while ( Addr.FlatPtr != pThis->KernelMteAddr.FlatPtr
|
---|
760 | && Addr.FlatPtr != pThis->PsLoadedModuleListAddr.FlatPtr);
|
---|
761 |
|
---|
762 | pThis->fValid = true;
|
---|
763 | return VINF_SUCCESS;
|
---|
764 | }
|
---|
765 |
|
---|
766 |
|
---|
767 | /**
|
---|
768 | * @copydoc DBGFOSREG::pfnProbe
|
---|
769 | */
|
---|
770 | static DECLCALLBACK(bool) dbgDiggerWinNtProbe(PUVM pUVM, void *pvData)
|
---|
771 | {
|
---|
772 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
773 | DBGFADDRESS Addr;
|
---|
774 | union
|
---|
775 | {
|
---|
776 | uint8_t au8[8192];
|
---|
777 | uint16_t au16[8192/2];
|
---|
778 | uint32_t au32[8192/4];
|
---|
779 | IMAGE_DOS_HEADER MzHdr;
|
---|
780 | RTUTF16 wsz[8192/2];
|
---|
781 | X86DESC64GATE a32Gates[X86_XCPT_PF + 1];
|
---|
782 | X86DESC64GATE a64Gates[X86_XCPT_PF + 1];
|
---|
783 | } u;
|
---|
784 |
|
---|
785 | union
|
---|
786 | {
|
---|
787 | NTMTE32 v32;
|
---|
788 | NTMTE64 v64;
|
---|
789 | } uMte, uMte2, uMte3;
|
---|
790 |
|
---|
791 | /*
|
---|
792 | * NT only runs in protected or long mode.
|
---|
793 | */
|
---|
794 | CPUMMODE const enmMode = DBGFR3CpuGetMode(pUVM, 0 /*idCpu*/);
|
---|
795 | if (enmMode != CPUMMODE_PROTECTED && enmMode != CPUMMODE_LONG)
|
---|
796 | return false;
|
---|
797 | bool const f64Bit = enmMode == CPUMMODE_LONG;
|
---|
798 | uint64_t const uStart = f64Bit ? UINT64_C(0xffff080000000000) : UINT32_C(0x80001000);
|
---|
799 | uint64_t const uEnd = f64Bit ? UINT64_C(0xffffffffffff0000) : UINT32_C(0xffff0000);
|
---|
800 |
|
---|
801 | /*
|
---|
802 | * To approximately locate the kernel we examine the IDTR handlers.
|
---|
803 | *
|
---|
804 | * The exception/trap/fault handlers are all in NT kernel image, we pick
|
---|
805 | * KiPageFault here.
|
---|
806 | */
|
---|
807 | uint64_t uIdtrBase = 0;
|
---|
808 | uint16_t uIdtrLimit = 0;
|
---|
809 | int rc = DBGFR3RegCpuQueryXdtr(pUVM, 0, DBGFREG_IDTR, &uIdtrBase, &uIdtrLimit);
|
---|
810 | AssertRCReturn(rc, false);
|
---|
811 |
|
---|
812 | const uint16_t cbMinIdtr = (X86_XCPT_PF + 1) * (f64Bit ? sizeof(X86DESC64GATE) : sizeof(X86DESCGATE));
|
---|
813 | if (uIdtrLimit < cbMinIdtr)
|
---|
814 | return false;
|
---|
815 |
|
---|
816 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uIdtrBase), &u, cbMinIdtr);
|
---|
817 | if (RT_FAILURE(rc))
|
---|
818 | return false;
|
---|
819 |
|
---|
820 | uint64_t uKrnlStart = uStart;
|
---|
821 | uint64_t uKrnlEnd = uEnd;
|
---|
822 | if (f64Bit)
|
---|
823 | {
|
---|
824 | uint64_t uHandler = u.a64Gates[X86_XCPT_PF].u16OffsetLow
|
---|
825 | | ((uint32_t)u.a64Gates[X86_XCPT_PF].u16OffsetHigh << 16)
|
---|
826 | | ((uint64_t)u.a64Gates[X86_XCPT_PF].u32OffsetTop << 32);
|
---|
827 | if (uHandler < uStart || uHandler > uEnd)
|
---|
828 | return false;
|
---|
829 | uKrnlStart = (uHandler & ~(uint64_t)_4M) - _512M;
|
---|
830 | uKrnlEnd = (uHandler + (uint64_t)_4M) & ~(uint64_t)_4M;
|
---|
831 | }
|
---|
832 | else
|
---|
833 | {
|
---|
834 | uint32_t uHandler = u.a32Gates[X86_XCPT_PF].u16OffsetLow
|
---|
835 | | ((uint32_t)u.a64Gates[X86_XCPT_PF].u16OffsetHigh << 16);
|
---|
836 | if (uHandler < uStart || uHandler > uEnd)
|
---|
837 | return false;
|
---|
838 | uKrnlStart = (uHandler & ~(uint64_t)_4M) - _64M;
|
---|
839 | uKrnlEnd = (uHandler + (uint64_t)_4M) & ~(uint64_t)_4M;
|
---|
840 | }
|
---|
841 |
|
---|
842 | /*
|
---|
843 | * Look for the PAGELK section name that seems to be a part of all kernels.
|
---|
844 | * Then try find the module table entry for it. Since it's the first entry
|
---|
845 | * in the PsLoadedModuleList we can easily validate the list head and report
|
---|
846 | * success.
|
---|
847 | *
|
---|
848 | * Note! We ASSUME the section name is 8 byte aligned.
|
---|
849 | */
|
---|
850 | DBGFADDRESS KernelAddr;
|
---|
851 | for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, uKrnlStart);
|
---|
852 | KernelAddr.FlatPtr < uKrnlEnd;
|
---|
853 | KernelAddr.FlatPtr += PAGE_SIZE)
|
---|
854 | {
|
---|
855 | bool fNt31 = false;
|
---|
856 | DBGFADDRESS const RetryAddress = KernelAddr;
|
---|
857 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
858 | 8, "PAGELK\0", sizeof("PAGELK\0"), &KernelAddr);
|
---|
859 | if ( rc == VERR_DBGF_MEM_NOT_FOUND
|
---|
860 | && enmMode != CPUMMODE_LONG)
|
---|
861 | {
|
---|
862 | /* NT3.1 didn't have a PAGELK section, so look for _TEXT instead. The
|
---|
863 | following VirtualSize is zero, so check for that too. */
|
---|
864 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &RetryAddress, uEnd - RetryAddress.FlatPtr,
|
---|
865 | 8, "_TEXT\0\0\0\0\0\0", sizeof("_TEXT\0\0\0\0\0\0"), &KernelAddr);
|
---|
866 | fNt31 = true;
|
---|
867 | }
|
---|
868 | if (RT_FAILURE(rc))
|
---|
869 | break;
|
---|
870 | DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & PAGE_OFFSET_MASK);
|
---|
871 |
|
---|
872 | /* MZ + PE header. */
|
---|
873 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &KernelAddr, &u, sizeof(u));
|
---|
874 | if ( RT_SUCCESS(rc)
|
---|
875 | && u.MzHdr.e_magic == IMAGE_DOS_SIGNATURE
|
---|
876 | && !(u.MzHdr.e_lfanew & 0x7)
|
---|
877 | && u.MzHdr.e_lfanew >= 0x080
|
---|
878 | && u.MzHdr.e_lfanew <= 0x400) /* W8 is at 0x288*/
|
---|
879 | {
|
---|
880 | if (enmMode != CPUMMODE_LONG)
|
---|
881 | {
|
---|
882 | IMAGE_NT_HEADERS32 const *pHdrs = (IMAGE_NT_HEADERS32 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
883 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
884 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_I386
|
---|
885 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
886 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
887 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL)) == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
888 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
|
---|
889 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
890 | )
|
---|
891 | {
|
---|
892 | /* Find the MTE. */
|
---|
893 | RT_ZERO(uMte);
|
---|
894 | uMte.v32.DllBase = KernelAddr.FlatPtr;
|
---|
895 | uMte.v32.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
896 | uMte.v32.SizeOfImage = !fNt31 ? pHdrs->OptionalHeader.SizeOfImage : 0; /* NT 3.1 didn't set the size. */
|
---|
897 | DBGFADDRESS HitAddr;
|
---|
898 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
899 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
900 | while (RT_SUCCESS(rc))
|
---|
901 | {
|
---|
902 | /* check the name. */
|
---|
903 | DBGFADDRESS MteAddr = HitAddr;
|
---|
904 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE32, DllBase)),
|
---|
905 | &uMte2.v32, sizeof(uMte2.v32));
|
---|
906 | if ( RT_SUCCESS(rc)
|
---|
907 | && uMte2.v32.DllBase == uMte.v32.DllBase
|
---|
908 | && uMte2.v32.EntryPoint == uMte.v32.EntryPoint
|
---|
909 | && uMte2.v32.SizeOfImage == uMte.v32.SizeOfImage
|
---|
910 | && WINNT32_VALID_ADDRESS(uMte2.v32.InLoadOrderLinks.Flink)
|
---|
911 | && WINNT32_VALID_ADDRESS(uMte2.v32.BaseDllName.Buffer)
|
---|
912 | && WINNT32_VALID_ADDRESS(uMte2.v32.FullDllName.Buffer)
|
---|
913 | && uMte2.v32.BaseDllName.Length <= 128
|
---|
914 | && uMte2.v32.FullDllName.Length <= 260
|
---|
915 | )
|
---|
916 | {
|
---|
917 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.BaseDllName.Buffer),
|
---|
918 | u.wsz, uMte2.v32.BaseDllName.Length);
|
---|
919 | u.wsz[uMte2.v32.BaseDllName.Length / 2] = '\0';
|
---|
920 | if ( RT_SUCCESS(rc)
|
---|
921 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
922 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
923 | )
|
---|
924 | )
|
---|
925 | {
|
---|
926 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
927 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.InLoadOrderLinks.Blink),
|
---|
928 | &uMte3.v32, RT_SIZEOFMEMB(NTMTE32, InLoadOrderLinks));
|
---|
929 | if ( RT_SUCCESS(rc)
|
---|
930 | && uMte3.v32.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
931 | && WINNT32_VALID_ADDRESS(uMte3.v32.InLoadOrderLinks.Blink) )
|
---|
932 | {
|
---|
933 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
934 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, Addr.FlatPtr));
|
---|
935 | pThis->KernelAddr = KernelAddr;
|
---|
936 | pThis->KernelMteAddr = MteAddr;
|
---|
937 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
938 | pThis->f32Bit = true;
|
---|
939 | pThis->fNt31 = fNt31;
|
---|
940 | return true;
|
---|
941 | }
|
---|
942 | }
|
---|
943 | else if (RT_SUCCESS(rc))
|
---|
944 | {
|
---|
945 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
946 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, u.wsz));
|
---|
947 | break; /* Not NT kernel */
|
---|
948 | }
|
---|
949 | }
|
---|
950 |
|
---|
951 | /* next */
|
---|
952 | DBGFR3AddrAdd(&HitAddr, 4);
|
---|
953 | if (HitAddr.FlatPtr < uEnd)
|
---|
954 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
955 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
956 | else
|
---|
957 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
958 | }
|
---|
959 | }
|
---|
960 | }
|
---|
961 | else
|
---|
962 | {
|
---|
963 | IMAGE_NT_HEADERS64 const *pHdrs = (IMAGE_NT_HEADERS64 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
964 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
965 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64
|
---|
966 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
967 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
968 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL))
|
---|
969 | == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
970 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC
|
---|
971 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
972 | )
|
---|
973 | {
|
---|
974 | /* Find the MTE. */
|
---|
975 | RT_ZERO(uMte.v64);
|
---|
976 | uMte.v64.DllBase = KernelAddr.FlatPtr;
|
---|
977 | uMte.v64.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
978 | uMte.v64.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
|
---|
979 | DBGFADDRESS ScanAddr;
|
---|
980 | DBGFADDRESS HitAddr;
|
---|
981 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &ScanAddr, uStart),
|
---|
982 | uEnd - uStart, 8 /*align*/, &uMte.v64.DllBase, 5 * sizeof(uint32_t), &HitAddr);
|
---|
983 | while (RT_SUCCESS(rc))
|
---|
984 | {
|
---|
985 | /* Read the start of the MTE and check some basic members. */
|
---|
986 | DBGFADDRESS MteAddr = HitAddr;
|
---|
987 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE64, DllBase)),
|
---|
988 | &uMte2.v64, sizeof(uMte2.v64));
|
---|
989 | if ( RT_SUCCESS(rc)
|
---|
990 | && uMte2.v64.DllBase == uMte.v64.DllBase
|
---|
991 | && uMte2.v64.EntryPoint == uMte.v64.EntryPoint
|
---|
992 | && uMte2.v64.SizeOfImage == uMte.v64.SizeOfImage
|
---|
993 | && WINNT64_VALID_ADDRESS(uMte2.v64.InLoadOrderLinks.Flink)
|
---|
994 | && WINNT64_VALID_ADDRESS(uMte2.v64.BaseDllName.Buffer)
|
---|
995 | && WINNT64_VALID_ADDRESS(uMte2.v64.FullDllName.Buffer)
|
---|
996 | && uMte2.v64.BaseDllName.Length <= 128
|
---|
997 | && uMte2.v64.FullDllName.Length <= 260
|
---|
998 | )
|
---|
999 | {
|
---|
1000 | /* Try read the base name and compare with known NT kernel names. */
|
---|
1001 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.BaseDllName.Buffer),
|
---|
1002 | u.wsz, uMte2.v64.BaseDllName.Length);
|
---|
1003 | u.wsz[uMte2.v64.BaseDllName.Length / 2] = '\0';
|
---|
1004 | if ( RT_SUCCESS(rc)
|
---|
1005 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
1006 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
1007 | )
|
---|
1008 | )
|
---|
1009 | {
|
---|
1010 | /* Read the link entry of the previous entry in the list and check that its
|
---|
1011 | forward pointer points at the MTE we've found. */
|
---|
1012 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
1013 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.InLoadOrderLinks.Blink),
|
---|
1014 | &uMte3.v64, RT_SIZEOFMEMB(NTMTE64, InLoadOrderLinks));
|
---|
1015 | if ( RT_SUCCESS(rc)
|
---|
1016 | && uMte3.v64.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
1017 | && WINNT64_VALID_ADDRESS(uMte3.v64.InLoadOrderLinks.Blink) )
|
---|
1018 | {
|
---|
1019 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
1020 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, Addr.FlatPtr));
|
---|
1021 | pThis->KernelAddr = KernelAddr;
|
---|
1022 | pThis->KernelMteAddr = MteAddr;
|
---|
1023 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
1024 | pThis->f32Bit = false;
|
---|
1025 | pThis->fNt31 = false;
|
---|
1026 | return true;
|
---|
1027 | }
|
---|
1028 | }
|
---|
1029 | else if (RT_SUCCESS(rc))
|
---|
1030 | {
|
---|
1031 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
1032 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, u.wsz));
|
---|
1033 | break; /* Not NT kernel */
|
---|
1034 | }
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | /* next */
|
---|
1038 | DBGFR3AddrAdd(&HitAddr, 8);
|
---|
1039 | if (HitAddr.FlatPtr < uEnd)
|
---|
1040 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
1041 | 8 /*align*/, &uMte.v64.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
1042 | else
|
---|
1043 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
1044 | }
|
---|
1045 | }
|
---|
1046 | }
|
---|
1047 | }
|
---|
1048 | }
|
---|
1049 | return false;
|
---|
1050 | }
|
---|
1051 |
|
---|
1052 |
|
---|
1053 | /**
|
---|
1054 | * @copydoc DBGFOSREG::pfnDestruct
|
---|
1055 | */
|
---|
1056 | static DECLCALLBACK(void) dbgDiggerWinNtDestruct(PUVM pUVM, void *pvData)
|
---|
1057 | {
|
---|
1058 | RT_NOREF2(pUVM, pvData);
|
---|
1059 | }
|
---|
1060 |
|
---|
1061 |
|
---|
1062 | /**
|
---|
1063 | * @copydoc DBGFOSREG::pfnConstruct
|
---|
1064 | */
|
---|
1065 | static DECLCALLBACK(int) dbgDiggerWinNtConstruct(PUVM pUVM, void *pvData)
|
---|
1066 | {
|
---|
1067 | RT_NOREF1(pUVM);
|
---|
1068 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
1069 | pThis->fValid = false;
|
---|
1070 | pThis->f32Bit = false;
|
---|
1071 | pThis->enmVer = DBGDIGGERWINNTVER_UNKNOWN;
|
---|
1072 | return VINF_SUCCESS;
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 |
|
---|
1076 | const DBGFOSREG g_DBGDiggerWinNt =
|
---|
1077 | {
|
---|
1078 | /* .u32Magic = */ DBGFOSREG_MAGIC,
|
---|
1079 | /* .fFlags = */ 0,
|
---|
1080 | /* .cbData = */ sizeof(DBGDIGGERWINNT),
|
---|
1081 | /* .szName = */ "WinNT",
|
---|
1082 | /* .pfnConstruct = */ dbgDiggerWinNtConstruct,
|
---|
1083 | /* .pfnDestruct = */ dbgDiggerWinNtDestruct,
|
---|
1084 | /* .pfnProbe = */ dbgDiggerWinNtProbe,
|
---|
1085 | /* .pfnInit = */ dbgDiggerWinNtInit,
|
---|
1086 | /* .pfnRefresh = */ dbgDiggerWinNtRefresh,
|
---|
1087 | /* .pfnTerm = */ dbgDiggerWinNtTerm,
|
---|
1088 | /* .pfnQueryVersion = */ dbgDiggerWinNtQueryVersion,
|
---|
1089 | /* .pfnQueryInterface = */ dbgDiggerWinNtQueryInterface,
|
---|
1090 | /* .pfnStackUnwindAssist = */ dbgDiggerWinNtStackUnwindAssist,
|
---|
1091 | /* .u32EndMagic = */ DBGFOSREG_MAGIC
|
---|
1092 | };
|
---|
1093 |
|
---|