1 | /* $Id: DBGFAddrSpace.cpp 46915 2013-07-02 17:21:32Z vboxsync $ */
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2 | /** @file
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3 | * DBGF - Debugger Facility, Address Space Management.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2008-2013 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 | /** @page pg_dbgf_addr_space DBGFAddrSpace - Address Space Management
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20 | *
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21 | * What's an address space? It's mainly a convenient way of stuffing
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22 | * module segments and ad-hoc symbols together. It will also help out
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23 | * when the debugger gets extended to deal with user processes later.
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24 | *
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25 | * There are two standard address spaces that will always be present:
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26 | * - The physical address space.
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27 | * - The global virtual address space.
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28 | *
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29 | * Additional address spaces will be added and removed at runtime for
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30 | * guest processes. The global virtual address space will be used to
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31 | * track the kernel parts of the OS, or at least the bits of the kernel
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32 | * that is part of all address spaces (mac os x and 4G/4G patched linux).
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33 | *
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34 | */
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35 |
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36 | /*******************************************************************************
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37 | * Header Files *
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38 | *******************************************************************************/
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39 | #define LOG_GROUP LOG_GROUP_DBGF
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40 | #include <VBox/vmm/dbgf.h>
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41 | #include <VBox/vmm/hm.h>
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42 | #include <VBox/vmm/pdmapi.h>
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43 | #include <VBox/vmm/mm.h>
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44 | #ifdef VBOX_WITH_RAW_MODE
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45 | # include <VBox/vmm/patm.h>
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46 | #endif
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47 | #include "DBGFInternal.h"
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48 | #include <VBox/vmm/uvm.h>
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49 | #include <VBox/vmm/vm.h>
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50 | #include <VBox/err.h>
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51 | #include <VBox/log.h>
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52 |
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53 | #include <iprt/asm.h>
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54 | #include <iprt/assert.h>
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55 | #include <iprt/ctype.h>
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56 | #include <iprt/env.h>
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57 | #include <iprt/mem.h>
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58 | #include <iprt/path.h>
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59 | #include <iprt/param.h>
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60 |
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61 |
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62 | /*******************************************************************************
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63 | * Structures and Typedefs *
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64 | *******************************************************************************/
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65 | /**
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66 | * Address space database node.
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67 | */
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68 | typedef struct DBGFASDBNODE
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69 | {
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70 | /** The node core for DBGF::AsHandleTree, the key is the address space handle. */
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71 | AVLPVNODECORE HandleCore;
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72 | /** The node core for DBGF::AsPidTree, the key is the process id. */
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73 | AVLU32NODECORE PidCore;
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74 | /** The node core for DBGF::AsNameSpace, the string is the address space name. */
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75 | RTSTRSPACECORE NameCore;
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76 |
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77 | } DBGFASDBNODE;
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78 | /** Pointer to an address space database node. */
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79 | typedef DBGFASDBNODE *PDBGFASDBNODE;
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80 |
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81 |
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82 | /**
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83 | * For dbgfR3AsLoadImageOpenData and dbgfR3AsLoadMapOpenData.
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84 | */
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85 | typedef struct DBGFR3ASLOADOPENDATA
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86 | {
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87 | const char *pszModName;
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88 | RTGCUINTPTR uSubtrahend;
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89 | uint32_t fFlags;
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90 | RTDBGMOD hMod;
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91 | } DBGFR3ASLOADOPENDATA;
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92 |
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93 | /**
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94 | * Callback for dbgfR3AsSearchPath and dbgfR3AsSearchEnvPath.
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95 | *
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96 | * @returns VBox status code. If success, then the search is completed.
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97 | * @param pszFilename The file name under evaluation.
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98 | * @param pvUser The user argument.
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99 | */
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100 | typedef int FNDBGFR3ASSEARCHOPEN(const char *pszFilename, void *pvUser);
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101 | /** Pointer to a FNDBGFR3ASSEARCHOPEN. */
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102 | typedef FNDBGFR3ASSEARCHOPEN *PFNDBGFR3ASSEARCHOPEN;
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103 |
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104 |
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105 | /*******************************************************************************
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106 | * Defined Constants And Macros *
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107 | *******************************************************************************/
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108 | /** Locks the address space database for writing. */
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109 | #define DBGF_AS_DB_LOCK_WRITE(pUVM) \
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110 | do { \
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111 | int rcSem = RTSemRWRequestWrite((pUVM)->dbgf.s.hAsDbLock, RT_INDEFINITE_WAIT); \
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112 | AssertRC(rcSem); \
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113 | } while (0)
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114 |
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115 | /** Unlocks the address space database after writing. */
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116 | #define DBGF_AS_DB_UNLOCK_WRITE(pUVM) \
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117 | do { \
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118 | int rcSem = RTSemRWReleaseWrite((pUVM)->dbgf.s.hAsDbLock); \
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119 | AssertRC(rcSem); \
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120 | } while (0)
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121 |
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122 | /** Locks the address space database for reading. */
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123 | #define DBGF_AS_DB_LOCK_READ(pUVM) \
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124 | do { \
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125 | int rcSem = RTSemRWRequestRead((pUVM)->dbgf.s.hAsDbLock, RT_INDEFINITE_WAIT); \
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126 | AssertRC(rcSem); \
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127 | } while (0)
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128 |
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129 | /** Unlocks the address space database after reading. */
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130 | #define DBGF_AS_DB_UNLOCK_READ(pUVM) \
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131 | do { \
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132 | int rcSem = RTSemRWReleaseRead((pUVM)->dbgf.s.hAsDbLock); \
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133 | AssertRC(rcSem); \
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134 | } while (0)
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135 |
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136 |
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137 |
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138 | /**
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139 | * Initializes the address space parts of DBGF.
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140 | *
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141 | * @returns VBox status code.
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142 | * @param pUVM The user mode VM handle.
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143 | */
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144 | int dbgfR3AsInit(PUVM pUVM)
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145 | {
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146 | Assert(pUVM->pVM);
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147 |
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148 | /*
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149 | * Create the semaphore.
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150 | */
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151 | int rc = RTSemRWCreate(&pUVM->dbgf.s.hAsDbLock);
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152 | AssertRCReturn(rc, rc);
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153 |
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154 | /*
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155 | * Create the debugging config instance and set it up, defaulting to
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156 | * deferred loading in order to keep things fast.
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157 | */
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158 | rc = RTDbgCfgCreate(&pUVM->dbgf.s.hDbgCfg, NULL, true /*fNativePaths*/);
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159 | AssertRCReturn(rc, rc);
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160 | rc = RTDbgCfgChangeUInt(pUVM->dbgf.s.hDbgCfg, RTDBGCFGPROP_FLAGS, RTDBGCFGOP_PREPEND,
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161 | RTDBGCFG_FLAGS_DEFERRED);
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162 | AssertRCReturn(rc, rc);
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163 |
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164 | static struct
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165 | {
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166 | RTDBGCFGPROP enmProp;
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167 | const char *pszEnvName;
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168 | const char *pszCfgName;
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169 | } const s_aProps[] =
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170 | {
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171 | { RTDBGCFGPROP_FLAGS, "VBOXDBG_FLAGS", "Flags" },
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172 | { RTDBGCFGPROP_PATH, "VBOXDBG_PATH", "Path" },
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173 | { RTDBGCFGPROP_SUFFIXES, "VBOXDBG_SUFFIXES", "Suffixes" },
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174 | { RTDBGCFGPROP_SRC_PATH, "VBOXDBG_SRC_PATH", "SrcPath" },
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175 | };
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176 | PCFGMNODE pCfgDbgf = CFGMR3GetChild(CFGMR3GetRootU(pUVM), "/DBGF");
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177 | for (unsigned i = 0; i < RT_ELEMENTS(s_aProps); i++)
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178 | {
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179 | const char *pszEnvValue = RTEnvGet(s_aProps[i].pszEnvName);
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180 | if (pszEnvValue)
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181 | {
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182 | rc = RTDbgCfgChangeString(pUVM->dbgf.s.hDbgCfg, s_aProps[i].enmProp, RTDBGCFGOP_PREPEND, pszEnvValue);
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183 | if (RT_FAILURE(rc))
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184 | return VMR3SetError(pUVM, rc, RT_SRC_POS,
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185 | "DBGF Config Error: %s=%s -> %Rrc", s_aProps[i].pszEnvName, pszEnvValue, rc);
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186 | }
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187 |
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188 | char *pszCfgValue;
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189 | rc = CFGMR3QueryStringAllocDef(pCfgDbgf, s_aProps[i].pszCfgName, &pszCfgValue, NULL);
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190 | if (RT_FAILURE(rc))
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191 | return VMR3SetError(pUVM, rc, RT_SRC_POS,
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192 | "DBGF Config Error: Querying /DBGF/%s -> %Rrc", s_aProps[i].pszCfgName, rc);
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193 | if (pszCfgValue)
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194 | {
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195 | rc = RTDbgCfgChangeString(pUVM->dbgf.s.hDbgCfg, s_aProps[i].enmProp, RTDBGCFGOP_PREPEND, pszCfgValue);
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196 | if (RT_FAILURE(rc))
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197 | return VMR3SetError(pUVM, rc, RT_SRC_POS,
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198 | "DBGF Config Error: /DBGF/%s=%s -> %Rrc", s_aProps[i].pszCfgName, pszCfgValue, rc);
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199 | }
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200 | }
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201 |
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202 | /*
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203 | * Create the standard address spaces.
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204 | */
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205 | RTDBGAS hDbgAs;
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206 | rc = RTDbgAsCreate(&hDbgAs, 0, RTGCPTR_MAX, "Global");
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207 | AssertRCReturn(rc, rc);
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208 | rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
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209 | AssertRCReturn(rc, rc);
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210 | RTDbgAsRetain(hDbgAs);
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211 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_GLOBAL)] = hDbgAs;
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212 |
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213 | RTDbgAsRetain(hDbgAs);
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214 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_KERNEL)] = hDbgAs;
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215 |
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216 | rc = RTDbgAsCreate(&hDbgAs, 0, RTGCPHYS_MAX, "Physical");
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217 | AssertRCReturn(rc, rc);
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218 | rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
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219 | AssertRCReturn(rc, rc);
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220 | RTDbgAsRetain(hDbgAs);
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221 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_PHYS)] = hDbgAs;
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222 |
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223 | rc = RTDbgAsCreate(&hDbgAs, 0, RTRCPTR_MAX, "HyperRawMode");
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224 | AssertRCReturn(rc, rc);
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225 | rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
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226 | AssertRCReturn(rc, rc);
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227 | RTDbgAsRetain(hDbgAs);
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228 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)] = hDbgAs;
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229 | RTDbgAsRetain(hDbgAs);
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230 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC_AND_GC_GLOBAL)] = hDbgAs;
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231 |
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232 | rc = RTDbgAsCreate(&hDbgAs, 0, RTR0PTR_MAX, "HyperRing0");
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233 | AssertRCReturn(rc, rc);
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234 | rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
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235 | AssertRCReturn(rc, rc);
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236 | RTDbgAsRetain(hDbgAs);
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237 | pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_R0)] = hDbgAs;
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238 |
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239 | return VINF_SUCCESS;
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240 | }
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241 |
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242 |
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243 | /**
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244 | * Callback used by dbgfR3AsTerm / RTAvlPVDestroy to release an address space.
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245 | *
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246 | * @returns 0.
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247 | * @param pNode The address space database node.
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248 | * @param pvIgnore NULL.
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249 | */
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250 | static DECLCALLBACK(int) dbgfR3AsTermDestroyNode(PAVLPVNODECORE pNode, void *pvIgnore)
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251 | {
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252 | PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)pNode;
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253 | RTDbgAsRelease((RTDBGAS)pDbNode->HandleCore.Key);
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254 | pDbNode->HandleCore.Key = NIL_RTDBGAS;
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255 | /* Don't bother freeing it here as MM will free it soon and MM is much at
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256 | it when doing it wholesale instead of piecemeal. */
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257 | NOREF(pvIgnore);
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258 | return 0;
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259 | }
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260 |
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261 |
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262 | /**
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263 | * Terminates the address space parts of DBGF.
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264 | *
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265 | * @param pUVM The user mode VM handle.
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266 | */
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267 | void dbgfR3AsTerm(PUVM pUVM)
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268 | {
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269 | /*
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270 | * Create the semaphore.
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271 | */
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272 | int rc = RTSemRWDestroy(pUVM->dbgf.s.hAsDbLock);
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273 | AssertRC(rc);
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274 | pUVM->dbgf.s.hAsDbLock = NIL_RTSEMRW;
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275 |
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276 | /*
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277 | * Release all the address spaces.
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278 | */
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279 | RTAvlPVDestroy(&pUVM->dbgf.s.AsHandleTree, dbgfR3AsTermDestroyNode, NULL);
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280 | for (size_t i = 0; i < RT_ELEMENTS(pUVM->dbgf.s.ahAsAliases); i++)
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281 | {
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282 | RTDbgAsRelease(pUVM->dbgf.s.ahAsAliases[i]);
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283 | pUVM->dbgf.s.ahAsAliases[i] = NIL_RTDBGAS;
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284 | }
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285 | }
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286 |
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287 |
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288 | /**
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289 | * Relocates the RC address space.
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290 | *
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291 | * @param pUVM The user mode VM handle.
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292 | * @param offDelta The relocation delta.
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293 | */
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294 | void dbgfR3AsRelocate(PUVM pUVM, RTGCUINTPTR offDelta)
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295 | {
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296 | /*
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297 | * We will relocate the raw-mode context modules by offDelta if they have
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298 | * been injected into the the DBGF_AS_RC map.
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299 | */
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300 | if ( pUVM->dbgf.s.afAsAliasPopuplated[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)]
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301 | && offDelta != 0)
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302 | {
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303 | RTDBGAS hAs = pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)];
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304 |
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305 | /* Take a snapshot of the modules as we might have overlapping
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306 | addresses between the previous and new mapping. */
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307 | RTDbgAsLockExcl(hAs);
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308 | uint32_t cModules = RTDbgAsModuleCount(hAs);
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309 | if (cModules > 0 && cModules < _4K)
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310 | {
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311 | struct DBGFASRELOCENTRY
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312 | {
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313 | RTDBGMOD hDbgMod;
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314 | RTRCPTR uOldAddr;
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315 | } *paEntries = (struct DBGFASRELOCENTRY *)RTMemTmpAllocZ(sizeof(paEntries[0]) * cModules);
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316 | if (paEntries)
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317 | {
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318 | /* Snapshot. */
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319 | for (uint32_t i = 0; i < cModules; i++)
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320 | {
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321 | paEntries[i].hDbgMod = RTDbgAsModuleByIndex(hAs, i);
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322 | AssertLogRelMsg(paEntries[i].hDbgMod != NIL_RTDBGMOD, ("iModule=%#x\n", i));
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323 |
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324 | RTDBGASMAPINFO aMappings[1] = { { 0, 0 } };
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325 | uint32_t cMappings = 1;
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326 | int rc = RTDbgAsModuleQueryMapByIndex(hAs, i, &aMappings[0], &cMappings, 0 /*fFlags*/);
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327 | if (RT_SUCCESS(rc) && cMappings == 1 && aMappings[0].iSeg == NIL_RTDBGSEGIDX)
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328 | paEntries[i].uOldAddr = (RTRCPTR)aMappings[0].Address;
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329 | else
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330 | AssertLogRelMsgFailed(("iModule=%#x rc=%Rrc cMappings=%#x.\n", i, rc, cMappings));
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331 | }
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332 |
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333 | /* Unlink them. */
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334 | for (uint32_t i = 0; i < cModules; i++)
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335 | {
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336 | int rc = RTDbgAsModuleUnlink(hAs, paEntries[i].hDbgMod);
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337 | AssertLogRelMsg(RT_SUCCESS(rc), ("iModule=%#x rc=%Rrc hDbgMod=%p\n", i, rc, paEntries[i].hDbgMod));
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338 | }
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339 |
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340 | /* Link them at the new locations. */
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341 | for (uint32_t i = 0; i < cModules; i++)
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342 | {
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343 | RTRCPTR uNewAddr = paEntries[i].uOldAddr + offDelta;
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344 | int rc = RTDbgAsModuleLink(hAs, paEntries[i].hDbgMod, uNewAddr,
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345 | RTDBGASLINK_FLAGS_REPLACE);
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346 | AssertLogRelMsg(RT_SUCCESS(rc),
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347 | ("iModule=%#x rc=%Rrc hDbgMod=%p %RRv -> %RRv\n", i, rc, paEntries[i].hDbgMod,
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348 | paEntries[i].uOldAddr, uNewAddr));
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349 | RTDbgModRelease(paEntries[i].hDbgMod);
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350 | }
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351 |
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352 | RTMemTmpFree(paEntries);
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353 | }
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354 | else
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355 | AssertLogRelMsgFailed(("No memory for %#x modules.\n", cModules));
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356 | }
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357 | else
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358 | AssertLogRelMsgFailed(("cModules=%#x\n", cModules));
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359 | RTDbgAsUnlockExcl(hAs);
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360 | }
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361 | }
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362 |
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363 |
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364 | /**
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365 | * Gets the IPRT debugging configuration handle (no refs retained).
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366 | *
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367 | * @returns Config handle or NIL_RTDBGCFG.
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368 | * @param pUVM The user mode VM handle.
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369 | */
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370 | VMMR3DECL(RTDBGCFG) DBGFR3AsGetConfig(PUVM pUVM)
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371 | {
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372 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGCFG);
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373 | return pUVM->dbgf.s.hDbgCfg;
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374 | }
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375 |
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376 |
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377 | /**
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378 | * Adds the address space to the database.
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379 | *
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380 | * @returns VBox status code.
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381 | * @param pUVM The user mode VM handle.
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382 | * @param hDbgAs The address space handle. The reference of the caller
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383 | * will NOT be consumed.
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384 | * @param ProcId The process id or NIL_RTPROCESS.
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385 | */
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386 | VMMR3DECL(int) DBGFR3AsAdd(PUVM pUVM, RTDBGAS hDbgAs, RTPROCESS ProcId)
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387 | {
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388 | /*
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389 | * Input validation.
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390 | */
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391 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
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392 | const char *pszName = RTDbgAsName(hDbgAs);
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393 | if (!pszName)
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394 | return VERR_INVALID_HANDLE;
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395 | uint32_t cRefs = RTDbgAsRetain(hDbgAs);
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396 | if (cRefs == UINT32_MAX)
|
---|
397 | return VERR_INVALID_HANDLE;
|
---|
398 |
|
---|
399 | /*
|
---|
400 | * Allocate a tracking node.
|
---|
401 | */
|
---|
402 | int rc = VERR_NO_MEMORY;
|
---|
403 | PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_AS, sizeof(*pDbNode));
|
---|
404 | if (pDbNode)
|
---|
405 | {
|
---|
406 | pDbNode->HandleCore.Key = hDbgAs;
|
---|
407 | pDbNode->PidCore.Key = ProcId;
|
---|
408 | pDbNode->NameCore.pszString = pszName;
|
---|
409 | pDbNode->NameCore.cchString = strlen(pszName);
|
---|
410 | DBGF_AS_DB_LOCK_WRITE(pUVM);
|
---|
411 | if (RTStrSpaceInsert(&pUVM->dbgf.s.AsNameSpace, &pDbNode->NameCore))
|
---|
412 | {
|
---|
413 | if (RTAvlPVInsert(&pUVM->dbgf.s.AsHandleTree, &pDbNode->HandleCore))
|
---|
414 | {
|
---|
415 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
416 | return VINF_SUCCESS;
|
---|
417 | }
|
---|
418 |
|
---|
419 | /* bail out */
|
---|
420 | RTStrSpaceRemove(&pUVM->dbgf.s.AsNameSpace, pszName);
|
---|
421 | }
|
---|
422 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
423 | MMR3HeapFree(pDbNode);
|
---|
424 | }
|
---|
425 | RTDbgAsRelease(hDbgAs);
|
---|
426 | return rc;
|
---|
427 | }
|
---|
428 |
|
---|
429 |
|
---|
430 | /**
|
---|
431 | * Delete an address space from the database.
|
---|
432 | *
|
---|
433 | * The address space must not be engaged as any of the standard aliases.
|
---|
434 | *
|
---|
435 | * @returns VBox status code.
|
---|
436 | * @retval VERR_SHARING_VIOLATION if in use as an alias.
|
---|
437 | * @retval VERR_NOT_FOUND if not found in the address space database.
|
---|
438 | *
|
---|
439 | * @param pUVM The user mode VM handle.
|
---|
440 | * @param hDbgAs The address space handle. Aliases are not allowed.
|
---|
441 | */
|
---|
442 | VMMR3DECL(int) DBGFR3AsDelete(PUVM pUVM, RTDBGAS hDbgAs)
|
---|
443 | {
|
---|
444 | /*
|
---|
445 | * Input validation. Retain the address space so it can be released outside
|
---|
446 | * the lock as well as validated.
|
---|
447 | */
|
---|
448 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
449 | if (hDbgAs == NIL_RTDBGAS)
|
---|
450 | return VINF_SUCCESS;
|
---|
451 | uint32_t cRefs = RTDbgAsRetain(hDbgAs);
|
---|
452 | if (cRefs == UINT32_MAX)
|
---|
453 | return VERR_INVALID_HANDLE;
|
---|
454 | RTDbgAsRelease(hDbgAs);
|
---|
455 |
|
---|
456 | DBGF_AS_DB_LOCK_WRITE(pUVM);
|
---|
457 |
|
---|
458 | /*
|
---|
459 | * You cannot delete any of the aliases.
|
---|
460 | */
|
---|
461 | for (size_t i = 0; i < RT_ELEMENTS(pUVM->dbgf.s.ahAsAliases); i++)
|
---|
462 | if (pUVM->dbgf.s.ahAsAliases[i] == hDbgAs)
|
---|
463 | {
|
---|
464 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
465 | return VERR_SHARING_VIOLATION;
|
---|
466 | }
|
---|
467 |
|
---|
468 | /*
|
---|
469 | * Ok, try remove it from the database.
|
---|
470 | */
|
---|
471 | PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)RTAvlPVRemove(&pUVM->dbgf.s.AsHandleTree, hDbgAs);
|
---|
472 | if (!pDbNode)
|
---|
473 | {
|
---|
474 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
475 | return VERR_NOT_FOUND;
|
---|
476 | }
|
---|
477 | RTStrSpaceRemove(&pUVM->dbgf.s.AsNameSpace, pDbNode->NameCore.pszString);
|
---|
478 | if (pDbNode->PidCore.Key != NIL_RTPROCESS)
|
---|
479 | RTAvlU32Remove(&pUVM->dbgf.s.AsPidTree, pDbNode->PidCore.Key);
|
---|
480 |
|
---|
481 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
482 |
|
---|
483 | /*
|
---|
484 | * Free the resources.
|
---|
485 | */
|
---|
486 | RTDbgAsRelease(hDbgAs);
|
---|
487 | MMR3HeapFree(pDbNode);
|
---|
488 |
|
---|
489 | return VINF_SUCCESS;
|
---|
490 | }
|
---|
491 |
|
---|
492 |
|
---|
493 | /**
|
---|
494 | * Changes an alias to point to a new address space.
|
---|
495 | *
|
---|
496 | * Not all the aliases can be changed, currently it's only DBGF_AS_GLOBAL
|
---|
497 | * and DBGF_AS_KERNEL.
|
---|
498 | *
|
---|
499 | * @returns VBox status code.
|
---|
500 | * @param pUVM The user mode VM handle.
|
---|
501 | * @param hAlias The alias to change.
|
---|
502 | * @param hAliasFor The address space hAlias should be an alias for. This
|
---|
503 | * can be an alias. The caller's reference to this address
|
---|
504 | * space will NOT be consumed.
|
---|
505 | */
|
---|
506 | VMMR3DECL(int) DBGFR3AsSetAlias(PUVM pUVM, RTDBGAS hAlias, RTDBGAS hAliasFor)
|
---|
507 | {
|
---|
508 | /*
|
---|
509 | * Input validation.
|
---|
510 | */
|
---|
511 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
512 | AssertMsgReturn(DBGF_AS_IS_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
|
---|
513 | AssertMsgReturn(!DBGF_AS_IS_FIXED_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
|
---|
514 | RTDBGAS hRealAliasFor = DBGFR3AsResolveAndRetain(pUVM, hAliasFor);
|
---|
515 | if (hRealAliasFor == NIL_RTDBGAS)
|
---|
516 | return VERR_INVALID_HANDLE;
|
---|
517 |
|
---|
518 | /*
|
---|
519 | * Make sure the handle has is already in the database.
|
---|
520 | */
|
---|
521 | int rc = VERR_NOT_FOUND;
|
---|
522 | DBGF_AS_DB_LOCK_WRITE(pUVM);
|
---|
523 | if (RTAvlPVGet(&pUVM->dbgf.s.AsHandleTree, hRealAliasFor))
|
---|
524 | {
|
---|
525 | /*
|
---|
526 | * Update the alias table and release the current address space.
|
---|
527 | */
|
---|
528 | RTDBGAS hAsOld;
|
---|
529 | ASMAtomicXchgHandle(&pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(hAlias)], hRealAliasFor, &hAsOld);
|
---|
530 | uint32_t cRefs = RTDbgAsRelease(hAsOld);
|
---|
531 | Assert(cRefs > 0); Assert(cRefs != UINT32_MAX); NOREF(cRefs);
|
---|
532 | rc = VINF_SUCCESS;
|
---|
533 | }
|
---|
534 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
535 |
|
---|
536 | return rc;
|
---|
537 | }
|
---|
538 |
|
---|
539 |
|
---|
540 | /**
|
---|
541 | * @callback_method_impl{FNPDMR3ENUM}
|
---|
542 | */
|
---|
543 | static DECLCALLBACK(int) dbgfR3AsLazyPopulateR0Callback(PVM pVM, const char *pszFilename, const char *pszName,
|
---|
544 | RTUINTPTR ImageBase, size_t cbImage, PDMLDRCTX enmCtx, void *pvArg)
|
---|
545 | {
|
---|
546 | NOREF(pVM); NOREF(cbImage);
|
---|
547 |
|
---|
548 | /* Only ring-0 modules. */
|
---|
549 | if (enmCtx == PDMLDRCTX_RING_0)
|
---|
550 | {
|
---|
551 | RTDBGMOD hDbgMod;
|
---|
552 | int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszName, RTLDRARCH_HOST, pVM->pUVM->dbgf.s.hDbgCfg);
|
---|
553 | if (RT_SUCCESS(rc))
|
---|
554 | {
|
---|
555 | rc = RTDbgAsModuleLink((RTDBGAS)pvArg, hDbgMod, ImageBase, 0 /*fFlags*/);
|
---|
556 | if (RT_FAILURE(rc))
|
---|
557 | LogRel(("DBGF: Failed to link module \"%s\" into DBGF_AS_R0 at %RTptr: %Rrc\n",
|
---|
558 | pszName, ImageBase, rc));
|
---|
559 | }
|
---|
560 | else
|
---|
561 | LogRel(("DBGF: RTDbgModCreateFromImage failed with rc=%Rrc for module \"%s\" (%s)\n",
|
---|
562 | rc, pszName, pszFilename));
|
---|
563 | }
|
---|
564 | return VINF_SUCCESS;
|
---|
565 | }
|
---|
566 |
|
---|
567 |
|
---|
568 | /**
|
---|
569 | * @callback_method_impl{FNPDMR3ENUM}
|
---|
570 | */
|
---|
571 | static DECLCALLBACK(int) dbgfR3AsLazyPopulateRCCallback(PVM pVM, const char *pszFilename, const char *pszName,
|
---|
572 | RTUINTPTR ImageBase, size_t cbImage, PDMLDRCTX enmCtx, void *pvArg)
|
---|
573 | {
|
---|
574 | NOREF(pVM); NOREF(cbImage);
|
---|
575 |
|
---|
576 | /* Only raw-mode modules. */
|
---|
577 | if (enmCtx == PDMLDRCTX_RAW_MODE)
|
---|
578 | {
|
---|
579 | RTDBGMOD hDbgMod;
|
---|
580 | int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszName, RTLDRARCH_X86_32, pVM->pUVM->dbgf.s.hDbgCfg);
|
---|
581 | if (RT_SUCCESS(rc))
|
---|
582 | {
|
---|
583 | rc = RTDbgAsModuleLink((RTDBGAS)pvArg, hDbgMod, ImageBase, 0 /*fFlags*/);
|
---|
584 | if (RT_FAILURE(rc))
|
---|
585 | LogRel(("DBGF: Failed to link module \"%s\" into DBGF_AS_RC at %RTptr: %Rrc\n",
|
---|
586 | pszName, ImageBase, rc));
|
---|
587 | }
|
---|
588 | else
|
---|
589 | LogRel(("DBGF: RTDbgModCreateFromImage failed with rc=%Rrc for module \"%s\" (%s)\n",
|
---|
590 | rc, pszName, pszFilename));
|
---|
591 | }
|
---|
592 | return VINF_SUCCESS;
|
---|
593 | }
|
---|
594 |
|
---|
595 |
|
---|
596 | /**
|
---|
597 | * Lazily populates the specified address space.
|
---|
598 | *
|
---|
599 | * @param pUVM The user mode VM handle.
|
---|
600 | * @param hAlias The alias.
|
---|
601 | */
|
---|
602 | static void dbgfR3AsLazyPopulate(PUVM pUVM, RTDBGAS hAlias)
|
---|
603 | {
|
---|
604 | DBGF_AS_DB_LOCK_WRITE(pUVM);
|
---|
605 | uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
|
---|
606 | if (!pUVM->dbgf.s.afAsAliasPopuplated[iAlias])
|
---|
607 | {
|
---|
608 | RTDBGAS hDbgAs = pUVM->dbgf.s.ahAsAliases[iAlias];
|
---|
609 | if (hAlias == DBGF_AS_R0 && pUVM->pVM)
|
---|
610 | PDMR3LdrEnumModules(pUVM->pVM, dbgfR3AsLazyPopulateR0Callback, hDbgAs);
|
---|
611 | else if (hAlias == DBGF_AS_RC && pUVM->pVM && !HMIsEnabled(pUVM->pVM))
|
---|
612 | {
|
---|
613 | LogRel(("DBGF: Lazy init of RC address space\n"));
|
---|
614 | PDMR3LdrEnumModules(pUVM->pVM, dbgfR3AsLazyPopulateRCCallback, hDbgAs);
|
---|
615 | #ifdef VBOX_WITH_RAW_MODE
|
---|
616 | PATMR3DbgPopulateAddrSpace(pUVM->pVM, hDbgAs);
|
---|
617 | #endif
|
---|
618 | }
|
---|
619 |
|
---|
620 | pUVM->dbgf.s.afAsAliasPopuplated[iAlias] = true;
|
---|
621 | }
|
---|
622 | DBGF_AS_DB_UNLOCK_WRITE(pUVM);
|
---|
623 | }
|
---|
624 |
|
---|
625 |
|
---|
626 | /**
|
---|
627 | * Resolves the address space handle into a real handle if it's an alias.
|
---|
628 | *
|
---|
629 | * @returns Real address space handle. NIL_RTDBGAS if invalid handle.
|
---|
630 | *
|
---|
631 | * @param pUVM The user mode VM handle.
|
---|
632 | * @param hAlias The possibly address space alias.
|
---|
633 | *
|
---|
634 | * @remarks Doesn't take any locks.
|
---|
635 | */
|
---|
636 | VMMR3DECL(RTDBGAS) DBGFR3AsResolve(PUVM pUVM, RTDBGAS hAlias)
|
---|
637 | {
|
---|
638 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
|
---|
639 | AssertCompileNS(NIL_RTDBGAS == (RTDBGAS)0);
|
---|
640 |
|
---|
641 | uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
|
---|
642 | if (iAlias < DBGF_AS_COUNT)
|
---|
643 | ASMAtomicReadHandle(&pUVM->dbgf.s.ahAsAliases[iAlias], &hAlias);
|
---|
644 | return hAlias;
|
---|
645 | }
|
---|
646 |
|
---|
647 |
|
---|
648 | /**
|
---|
649 | * Resolves the address space handle into a real handle if it's an alias,
|
---|
650 | * and retains whatever it is.
|
---|
651 | *
|
---|
652 | * @returns Real address space handle. NIL_RTDBGAS if invalid handle.
|
---|
653 | *
|
---|
654 | * @param pUVM The user mode VM handle.
|
---|
655 | * @param hAlias The possibly address space alias.
|
---|
656 | */
|
---|
657 | VMMR3DECL(RTDBGAS) DBGFR3AsResolveAndRetain(PUVM pUVM, RTDBGAS hAlias)
|
---|
658 | {
|
---|
659 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
|
---|
660 | AssertCompileNS(NIL_RTDBGAS == (RTDBGAS)0);
|
---|
661 |
|
---|
662 | uint32_t cRefs;
|
---|
663 | uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
|
---|
664 | if (iAlias < DBGF_AS_COUNT)
|
---|
665 | {
|
---|
666 | if (DBGF_AS_IS_FIXED_ALIAS(hAlias))
|
---|
667 | {
|
---|
668 | /* Perform lazy address space population. */
|
---|
669 | if (!pUVM->dbgf.s.afAsAliasPopuplated[iAlias])
|
---|
670 | dbgfR3AsLazyPopulate(pUVM, hAlias);
|
---|
671 |
|
---|
672 | /* Won't ever change, no need to grab the lock. */
|
---|
673 | hAlias = pUVM->dbgf.s.ahAsAliases[iAlias];
|
---|
674 | cRefs = RTDbgAsRetain(hAlias);
|
---|
675 | }
|
---|
676 | else
|
---|
677 | {
|
---|
678 | /* May change, grab the lock so we can read it safely. */
|
---|
679 | DBGF_AS_DB_LOCK_READ(pUVM);
|
---|
680 | hAlias = pUVM->dbgf.s.ahAsAliases[iAlias];
|
---|
681 | cRefs = RTDbgAsRetain(hAlias);
|
---|
682 | DBGF_AS_DB_UNLOCK_READ(pUVM);
|
---|
683 | }
|
---|
684 | }
|
---|
685 | else
|
---|
686 | /* Not an alias, just retain it. */
|
---|
687 | cRefs = RTDbgAsRetain(hAlias);
|
---|
688 |
|
---|
689 | return cRefs != UINT32_MAX ? hAlias : NIL_RTDBGAS;
|
---|
690 | }
|
---|
691 |
|
---|
692 |
|
---|
693 | /**
|
---|
694 | * Query an address space by name.
|
---|
695 | *
|
---|
696 | * @returns Retained address space handle if found, NIL_RTDBGAS if not.
|
---|
697 | *
|
---|
698 | * @param pUVM The user mode VM handle.
|
---|
699 | * @param pszName The name.
|
---|
700 | */
|
---|
701 | VMMR3DECL(RTDBGAS) DBGFR3AsQueryByName(PUVM pUVM, const char *pszName)
|
---|
702 | {
|
---|
703 | /*
|
---|
704 | * Validate the input.
|
---|
705 | */
|
---|
706 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGAS);
|
---|
707 | AssertPtrReturn(pszName, NIL_RTDBGAS);
|
---|
708 | AssertReturn(*pszName, NIL_RTDBGAS);
|
---|
709 |
|
---|
710 | /*
|
---|
711 | * Look it up in the string space and retain the result.
|
---|
712 | */
|
---|
713 | RTDBGAS hDbgAs = NIL_RTDBGAS;
|
---|
714 | DBGF_AS_DB_LOCK_READ(pUVM);
|
---|
715 |
|
---|
716 | PRTSTRSPACECORE pNode = RTStrSpaceGet(&pUVM->dbgf.s.AsNameSpace, pszName);
|
---|
717 | if (pNode)
|
---|
718 | {
|
---|
719 | PDBGFASDBNODE pDbNode = RT_FROM_MEMBER(pNode, DBGFASDBNODE, NameCore);
|
---|
720 | hDbgAs = (RTDBGAS)pDbNode->HandleCore.Key;
|
---|
721 | uint32_t cRefs = RTDbgAsRetain(hDbgAs);
|
---|
722 | if (RT_UNLIKELY(cRefs == UINT32_MAX))
|
---|
723 | hDbgAs = NIL_RTDBGAS;
|
---|
724 | }
|
---|
725 |
|
---|
726 | DBGF_AS_DB_UNLOCK_READ(pUVM);
|
---|
727 | return hDbgAs;
|
---|
728 | }
|
---|
729 |
|
---|
730 |
|
---|
731 | /**
|
---|
732 | * Query an address space by process ID.
|
---|
733 | *
|
---|
734 | * @returns Retained address space handle if found, NIL_RTDBGAS if not.
|
---|
735 | *
|
---|
736 | * @param pUVM The user mode VM handle.
|
---|
737 | * @param ProcId The process ID.
|
---|
738 | */
|
---|
739 | VMMR3DECL(RTDBGAS) DBGFR3AsQueryByPid(PUVM pUVM, RTPROCESS ProcId)
|
---|
740 | {
|
---|
741 | /*
|
---|
742 | * Validate the input.
|
---|
743 | */
|
---|
744 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGAS);
|
---|
745 | AssertReturn(ProcId != NIL_RTPROCESS, NIL_RTDBGAS);
|
---|
746 |
|
---|
747 | /*
|
---|
748 | * Look it up in the PID tree and retain the result.
|
---|
749 | */
|
---|
750 | RTDBGAS hDbgAs = NIL_RTDBGAS;
|
---|
751 | DBGF_AS_DB_LOCK_READ(pUVM);
|
---|
752 |
|
---|
753 | PAVLU32NODECORE pNode = RTAvlU32Get(&pUVM->dbgf.s.AsPidTree, ProcId);
|
---|
754 | if (pNode)
|
---|
755 | {
|
---|
756 | PDBGFASDBNODE pDbNode = RT_FROM_MEMBER(pNode, DBGFASDBNODE, PidCore);
|
---|
757 | hDbgAs = (RTDBGAS)pDbNode->HandleCore.Key;
|
---|
758 | uint32_t cRefs = RTDbgAsRetain(hDbgAs);
|
---|
759 | if (RT_UNLIKELY(cRefs == UINT32_MAX))
|
---|
760 | hDbgAs = NIL_RTDBGAS;
|
---|
761 | }
|
---|
762 | DBGF_AS_DB_UNLOCK_READ(pUVM);
|
---|
763 |
|
---|
764 | return hDbgAs;
|
---|
765 | }
|
---|
766 |
|
---|
767 |
|
---|
768 | /**
|
---|
769 | * Searches for the file in the path.
|
---|
770 | *
|
---|
771 | * The file is first tested without any path modification, then we walk the path
|
---|
772 | * looking in each directory.
|
---|
773 | *
|
---|
774 | * @returns VBox status code.
|
---|
775 | * @param pszFilename The file to search for.
|
---|
776 | * @param pszPath The search path.
|
---|
777 | * @param pfnOpen The open callback function.
|
---|
778 | * @param pvUser User argument for the callback.
|
---|
779 | */
|
---|
780 | static int dbgfR3AsSearchPath(const char *pszFilename, const char *pszPath, PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
|
---|
781 | {
|
---|
782 | char szFound[RTPATH_MAX];
|
---|
783 |
|
---|
784 | /* Check the filename length. */
|
---|
785 | size_t const cchFilename = strlen(pszFilename);
|
---|
786 | if (cchFilename >= sizeof(szFound))
|
---|
787 | return VERR_FILENAME_TOO_LONG;
|
---|
788 | const char *pszName = RTPathFilename(pszFilename);
|
---|
789 | if (!pszName)
|
---|
790 | return VERR_IS_A_DIRECTORY;
|
---|
791 | size_t const cchName = strlen(pszName);
|
---|
792 |
|
---|
793 | /*
|
---|
794 | * Try default location first.
|
---|
795 | */
|
---|
796 | memcpy(szFound, pszFilename, cchFilename + 1);
|
---|
797 | int rc = pfnOpen(szFound, pvUser);
|
---|
798 | if (RT_SUCCESS(rc))
|
---|
799 | return rc;
|
---|
800 |
|
---|
801 | /*
|
---|
802 | * Walk the search path.
|
---|
803 | */
|
---|
804 | const char *psz = pszPath;
|
---|
805 | while (*psz)
|
---|
806 | {
|
---|
807 | /* Skip leading blanks - no directories with leading spaces, thank you. */
|
---|
808 | while (RT_C_IS_BLANK(*psz))
|
---|
809 | psz++;
|
---|
810 |
|
---|
811 | /* Find the end of this element. */
|
---|
812 | const char *pszNext;
|
---|
813 | const char *pszEnd = strchr(psz, ';');
|
---|
814 | if (!pszEnd)
|
---|
815 | pszEnd = pszNext = strchr(psz, '\0');
|
---|
816 | else
|
---|
817 | pszNext = pszEnd + 1;
|
---|
818 | if (pszEnd != psz)
|
---|
819 | {
|
---|
820 | size_t const cch = pszEnd - psz;
|
---|
821 | if (cch + 1 + cchName < sizeof(szFound))
|
---|
822 | {
|
---|
823 | /** @todo RTPathCompose, RTPathComposeN(). This code isn't right
|
---|
824 | * for 'E:' on DOS systems. It may also create unwanted double slashes. */
|
---|
825 | memcpy(szFound, psz, cch);
|
---|
826 | szFound[cch] = '/';
|
---|
827 | memcpy(szFound + cch + 1, pszName, cchName + 1);
|
---|
828 | int rc2 = pfnOpen(szFound, pvUser);
|
---|
829 | if (RT_SUCCESS(rc2))
|
---|
830 | return rc2;
|
---|
831 | if ( rc2 != rc
|
---|
832 | && ( rc == VERR_FILE_NOT_FOUND
|
---|
833 | || rc == VERR_OPEN_FAILED))
|
---|
834 | rc = rc2;
|
---|
835 | }
|
---|
836 | }
|
---|
837 |
|
---|
838 | /* advance */
|
---|
839 | psz = pszNext;
|
---|
840 | }
|
---|
841 |
|
---|
842 | /*
|
---|
843 | * Walk the path once again, this time do a depth search.
|
---|
844 | */
|
---|
845 | /** @todo do a depth search using the specified path. */
|
---|
846 |
|
---|
847 | /* failed */
|
---|
848 | return rc;
|
---|
849 | }
|
---|
850 |
|
---|
851 |
|
---|
852 | /**
|
---|
853 | * Same as dbgfR3AsSearchEnv, except that the path is taken from the environment.
|
---|
854 | *
|
---|
855 | * If the environment variable doesn't exist, the current directory is searched
|
---|
856 | * instead.
|
---|
857 | *
|
---|
858 | * @returns VBox status code.
|
---|
859 | * @param pszFilename The filename.
|
---|
860 | * @param pszEnvVar The environment variable name.
|
---|
861 | * @param pfnOpen The open callback function.
|
---|
862 | * @param pvUser User argument for the callback.
|
---|
863 | */
|
---|
864 | static int dbgfR3AsSearchEnvPath(const char *pszFilename, const char *pszEnvVar, PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
|
---|
865 | {
|
---|
866 | int rc;
|
---|
867 | char *pszPath = RTEnvDupEx(RTENV_DEFAULT, pszEnvVar);
|
---|
868 | if (pszPath)
|
---|
869 | {
|
---|
870 | rc = dbgfR3AsSearchPath(pszFilename, pszPath, pfnOpen, pvUser);
|
---|
871 | RTStrFree(pszPath);
|
---|
872 | }
|
---|
873 | else
|
---|
874 | rc = dbgfR3AsSearchPath(pszFilename, ".", pfnOpen, pvUser);
|
---|
875 | return rc;
|
---|
876 | }
|
---|
877 |
|
---|
878 |
|
---|
879 | /**
|
---|
880 | * Same as dbgfR3AsSearchEnv, except that the path is taken from the DBGF config
|
---|
881 | * (CFGM).
|
---|
882 | *
|
---|
883 | * Nothing is done if the CFGM variable isn't set.
|
---|
884 | *
|
---|
885 | * @returns VBox status code.
|
---|
886 | * @param pUVM The user mode VM handle.
|
---|
887 | * @param pszFilename The filename.
|
---|
888 | * @param pszCfgValue The name of the config variable (under /DBGF/).
|
---|
889 | * @param pfnOpen The open callback function.
|
---|
890 | * @param pvUser User argument for the callback.
|
---|
891 | */
|
---|
892 | static int dbgfR3AsSearchCfgPath(PUVM pUVM, const char *pszFilename, const char *pszCfgValue,
|
---|
893 | PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
|
---|
894 | {
|
---|
895 | char *pszPath;
|
---|
896 | int rc = CFGMR3QueryStringAllocDef(CFGMR3GetChild(CFGMR3GetRootU(pUVM), "/DBGF"), pszCfgValue, &pszPath, NULL);
|
---|
897 | if (RT_FAILURE(rc))
|
---|
898 | return rc;
|
---|
899 | if (!pszPath)
|
---|
900 | return VERR_FILE_NOT_FOUND;
|
---|
901 | rc = dbgfR3AsSearchPath(pszFilename, pszPath, pfnOpen, pvUser);
|
---|
902 | MMR3HeapFree(pszPath);
|
---|
903 | return rc;
|
---|
904 | }
|
---|
905 |
|
---|
906 |
|
---|
907 | /**
|
---|
908 | * Load symbols from an executable module into the specified address space.
|
---|
909 | *
|
---|
910 | * If an module exist at the specified address it will be replaced by this
|
---|
911 | * call, otherwise a new module is created.
|
---|
912 | *
|
---|
913 | * @returns VBox status code.
|
---|
914 | *
|
---|
915 | * @param pUVM The user mode VM handle.
|
---|
916 | * @param hDbgAs The address space.
|
---|
917 | * @param pszFilename The filename of the executable module.
|
---|
918 | * @param pszModName The module name. If NULL, then then the file name
|
---|
919 | * base is used (no extension or nothing).
|
---|
920 | * @param pModAddress The load address of the module.
|
---|
921 | * @param iModSeg The segment to load, pass NIL_RTDBGSEGIDX to load
|
---|
922 | * the whole image.
|
---|
923 | * @param fFlags Flags reserved for future extensions, must be 0.
|
---|
924 | */
|
---|
925 | VMMR3DECL(int) DBGFR3AsLoadImage(PUVM pUVM, RTDBGAS hDbgAs, const char *pszFilename, const char *pszModName, PCDBGFADDRESS pModAddress, RTDBGSEGIDX iModSeg, uint32_t fFlags)
|
---|
926 | {
|
---|
927 | /*
|
---|
928 | * Validate input
|
---|
929 | */
|
---|
930 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
931 | AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
|
---|
932 | AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
|
---|
933 | AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
|
---|
934 | AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER);
|
---|
935 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
936 | if (hRealAS == NIL_RTDBGAS)
|
---|
937 | return VERR_INVALID_HANDLE;
|
---|
938 |
|
---|
939 | RTDBGMOD hDbgMod;
|
---|
940 | int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszModName, RTLDRARCH_WHATEVER, pUVM->dbgf.s.hDbgCfg);
|
---|
941 | if (RT_SUCCESS(rc))
|
---|
942 | {
|
---|
943 | rc = DBGFR3AsLinkModule(pUVM, hRealAS, hDbgMod, pModAddress, iModSeg, 0);
|
---|
944 | if (RT_FAILURE(rc))
|
---|
945 | RTDbgModRelease(hDbgMod);
|
---|
946 | }
|
---|
947 |
|
---|
948 | RTDbgAsRelease(hRealAS);
|
---|
949 | return rc;
|
---|
950 | }
|
---|
951 |
|
---|
952 |
|
---|
953 | /**
|
---|
954 | * Load symbols from a map file into a module at the specified address space.
|
---|
955 | *
|
---|
956 | * If an module exist at the specified address it will be replaced by this
|
---|
957 | * call, otherwise a new module is created.
|
---|
958 | *
|
---|
959 | * @returns VBox status code.
|
---|
960 | *
|
---|
961 | * @param pUVM The user mode VM handle.
|
---|
962 | * @param hDbgAs The address space.
|
---|
963 | * @param pszFilename The map file.
|
---|
964 | * @param pszModName The module name. If NULL, then then the file name
|
---|
965 | * base is used (no extension or nothing).
|
---|
966 | * @param pModAddress The load address of the module.
|
---|
967 | * @param iModSeg The segment to load, pass NIL_RTDBGSEGIDX to load
|
---|
968 | * the whole image.
|
---|
969 | * @param uSubtrahend Value to to subtract from the symbols in the map
|
---|
970 | * file. This is useful for the linux System.map and
|
---|
971 | * /proc/kallsyms.
|
---|
972 | * @param fFlags Flags reserved for future extensions, must be 0.
|
---|
973 | */
|
---|
974 | VMMR3DECL(int) DBGFR3AsLoadMap(PUVM pUVM, RTDBGAS hDbgAs, const char *pszFilename, const char *pszModName,
|
---|
975 | PCDBGFADDRESS pModAddress, RTDBGSEGIDX iModSeg, RTGCUINTPTR uSubtrahend, uint32_t fFlags)
|
---|
976 | {
|
---|
977 | /*
|
---|
978 | * Validate input
|
---|
979 | */
|
---|
980 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
981 | AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
|
---|
982 | AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
|
---|
983 | AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
|
---|
984 | AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER);
|
---|
985 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
986 | if (hRealAS == NIL_RTDBGAS)
|
---|
987 | return VERR_INVALID_HANDLE;
|
---|
988 |
|
---|
989 | RTDBGMOD hDbgMod;
|
---|
990 | int rc = RTDbgModCreateFromMap(&hDbgMod, pszFilename, pszModName, uSubtrahend, pUVM->dbgf.s.hDbgCfg);
|
---|
991 | if (RT_SUCCESS(rc))
|
---|
992 | {
|
---|
993 | rc = DBGFR3AsLinkModule(pUVM, hRealAS, hDbgMod, pModAddress, iModSeg, 0);
|
---|
994 | if (RT_FAILURE(rc))
|
---|
995 | RTDbgModRelease(hDbgMod);
|
---|
996 | }
|
---|
997 |
|
---|
998 | RTDbgAsRelease(hRealAS);
|
---|
999 | return rc;
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 |
|
---|
1003 | /**
|
---|
1004 | * Wrapper around RTDbgAsModuleLink, RTDbgAsModuleLinkSeg and DBGFR3AsResolve.
|
---|
1005 | *
|
---|
1006 | * @returns VBox status code.
|
---|
1007 | * @param pUVM The user mode VM handle.
|
---|
1008 | * @param hDbgAs The address space handle.
|
---|
1009 | * @param hMod The module handle.
|
---|
1010 | * @param pModAddress The link address.
|
---|
1011 | * @param iModSeg The segment to link, NIL_RTDBGSEGIDX for the entire image.
|
---|
1012 | * @param fFlags Flags to pass to the link functions, see RTDBGASLINK_FLAGS_*.
|
---|
1013 | */
|
---|
1014 | VMMR3DECL(int) DBGFR3AsLinkModule(PUVM pUVM, RTDBGAS hDbgAs, RTDBGMOD hMod, PCDBGFADDRESS pModAddress,
|
---|
1015 | RTDBGSEGIDX iModSeg, uint32_t fFlags)
|
---|
1016 | {
|
---|
1017 | /*
|
---|
1018 | * Input validation.
|
---|
1019 | */
|
---|
1020 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1021 | AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
|
---|
1022 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
1023 | if (hRealAS == NIL_RTDBGAS)
|
---|
1024 | return VERR_INVALID_HANDLE;
|
---|
1025 |
|
---|
1026 | /*
|
---|
1027 | * Do the job.
|
---|
1028 | */
|
---|
1029 | int rc;
|
---|
1030 | if (iModSeg == NIL_RTDBGSEGIDX)
|
---|
1031 | rc = RTDbgAsModuleLink(hRealAS, hMod, pModAddress->FlatPtr, fFlags);
|
---|
1032 | else
|
---|
1033 | rc = RTDbgAsModuleLinkSeg(hRealAS, hMod, iModSeg, pModAddress->FlatPtr, fFlags);
|
---|
1034 |
|
---|
1035 | RTDbgAsRelease(hRealAS);
|
---|
1036 | return rc;
|
---|
1037 | }
|
---|
1038 |
|
---|
1039 |
|
---|
1040 | /**
|
---|
1041 | * Adds the module name to the symbol name.
|
---|
1042 | *
|
---|
1043 | * @param pSymbol The symbol info (in/out).
|
---|
1044 | * @param hMod The module handle.
|
---|
1045 | */
|
---|
1046 | static void dbgfR3AsSymbolJoinNames(PRTDBGSYMBOL pSymbol, RTDBGMOD hMod)
|
---|
1047 | {
|
---|
1048 | /* Figure the lengths, adjust them if the result is too long. */
|
---|
1049 | const char *pszModName = RTDbgModName(hMod);
|
---|
1050 | size_t cchModName = strlen(pszModName);
|
---|
1051 | size_t cchSymbol = strlen(pSymbol->szName);
|
---|
1052 | if (cchModName + 1 + cchSymbol >= sizeof(pSymbol->szName))
|
---|
1053 | {
|
---|
1054 | if (cchModName >= sizeof(pSymbol->szName) / 4)
|
---|
1055 | cchModName = sizeof(pSymbol->szName) / 4;
|
---|
1056 | if (cchModName + 1 + cchSymbol >= sizeof(pSymbol->szName))
|
---|
1057 | cchSymbol = sizeof(pSymbol->szName) - cchModName - 2;
|
---|
1058 | Assert(cchModName + 1 + cchSymbol < sizeof(pSymbol->szName));
|
---|
1059 | }
|
---|
1060 |
|
---|
1061 | /* Do the moving and copying. */
|
---|
1062 | memmove(&pSymbol->szName[cchModName + 1], &pSymbol->szName[0], cchSymbol + 1);
|
---|
1063 | memcpy(&pSymbol->szName[0], pszModName, cchModName);
|
---|
1064 | pSymbol->szName[cchModName] = '!';
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 |
|
---|
1068 | /** Temporary symbol conversion function. */
|
---|
1069 | static void dbgfR3AsSymbolConvert(PRTDBGSYMBOL pSymbol, PCDBGFSYMBOL pDbgfSym)
|
---|
1070 | {
|
---|
1071 | pSymbol->offSeg = pSymbol->Value = pDbgfSym->Value;
|
---|
1072 | pSymbol->cb = pDbgfSym->cb;
|
---|
1073 | pSymbol->iSeg = 0;
|
---|
1074 | pSymbol->fFlags = 0;
|
---|
1075 | pSymbol->iOrdinal = UINT32_MAX;
|
---|
1076 | strcpy(pSymbol->szName, pDbgfSym->szName);
|
---|
1077 | }
|
---|
1078 |
|
---|
1079 |
|
---|
1080 | /**
|
---|
1081 | * Query a symbol by address.
|
---|
1082 | *
|
---|
1083 | * The returned symbol is the one we consider closes to the specified address.
|
---|
1084 | *
|
---|
1085 | * @returns VBox status code. See RTDbgAsSymbolByAddr.
|
---|
1086 | *
|
---|
1087 | * @param pUVM The user mode VM handle.
|
---|
1088 | * @param hDbgAs The address space handle.
|
---|
1089 | * @param pAddress The address to lookup.
|
---|
1090 | * @param fFlags One of the RTDBGSYMADDR_FLAGS_XXX flags.
|
---|
1091 | * @param poffDisp Where to return the distance between the returned
|
---|
1092 | * symbol and pAddress. Optional.
|
---|
1093 | * @param pSymbol Where to return the symbol information. The returned
|
---|
1094 | * symbol name will be prefixed by the module name as
|
---|
1095 | * far as space allows.
|
---|
1096 | * @param phMod Where to return the module handle. Optional.
|
---|
1097 | */
|
---|
1098 | VMMR3DECL(int) DBGFR3AsSymbolByAddr(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress, uint32_t fFlags,
|
---|
1099 | PRTGCINTPTR poffDisp, PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod)
|
---|
1100 | {
|
---|
1101 | /*
|
---|
1102 | * Implement the special address space aliases the lazy way.
|
---|
1103 | */
|
---|
1104 | if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
|
---|
1105 | {
|
---|
1106 | int rc = DBGFR3AsSymbolByAddr(pUVM, DBGF_AS_RC, pAddress, fFlags, poffDisp, pSymbol, phMod);
|
---|
1107 | if (RT_FAILURE(rc))
|
---|
1108 | rc = DBGFR3AsSymbolByAddr(pUVM, DBGF_AS_GLOBAL, pAddress, fFlags, poffDisp, pSymbol, phMod);
|
---|
1109 | return rc;
|
---|
1110 | }
|
---|
1111 |
|
---|
1112 | /*
|
---|
1113 | * Input validation.
|
---|
1114 | */
|
---|
1115 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1116 | AssertReturn(DBGFR3AddrIsValid(pUVM, pAddress), VERR_INVALID_PARAMETER);
|
---|
1117 | AssertPtrNullReturn(poffDisp, VERR_INVALID_POINTER);
|
---|
1118 | AssertPtrReturn(pSymbol, VERR_INVALID_POINTER);
|
---|
1119 | AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
|
---|
1120 | if (poffDisp)
|
---|
1121 | *poffDisp = 0;
|
---|
1122 | if (phMod)
|
---|
1123 | *phMod = NIL_RTDBGMOD;
|
---|
1124 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
1125 | if (hRealAS == NIL_RTDBGAS)
|
---|
1126 | return VERR_INVALID_HANDLE;
|
---|
1127 |
|
---|
1128 | /*
|
---|
1129 | * Do the lookup.
|
---|
1130 | */
|
---|
1131 | RTDBGMOD hMod;
|
---|
1132 | int rc = RTDbgAsSymbolByAddr(hRealAS, pAddress->FlatPtr, fFlags, poffDisp, pSymbol, &hMod);
|
---|
1133 | if (RT_SUCCESS(rc))
|
---|
1134 | {
|
---|
1135 | dbgfR3AsSymbolJoinNames(pSymbol, hMod);
|
---|
1136 | if (!phMod)
|
---|
1137 | RTDbgModRelease(hMod);
|
---|
1138 | }
|
---|
1139 |
|
---|
1140 | return rc;
|
---|
1141 | }
|
---|
1142 |
|
---|
1143 |
|
---|
1144 | /**
|
---|
1145 | * Convenience function that combines RTDbgSymbolDup and DBGFR3AsSymbolByAddr.
|
---|
1146 | *
|
---|
1147 | * @returns Pointer to the symbol on success. This must be free using
|
---|
1148 | * RTDbgSymbolFree(). NULL is returned if not found or any error
|
---|
1149 | * occurs.
|
---|
1150 | *
|
---|
1151 | * @param pUVM The user mode VM handle.
|
---|
1152 | * @param hDbgAs See DBGFR3AsSymbolByAddr.
|
---|
1153 | * @param pAddress See DBGFR3AsSymbolByAddr.
|
---|
1154 | * @param fFlags See DBGFR3AsSymbolByAddr.
|
---|
1155 | * @param poffDisp See DBGFR3AsSymbolByAddr.
|
---|
1156 | * @param phMod See DBGFR3AsSymbolByAddr.
|
---|
1157 | */
|
---|
1158 | VMMR3DECL(PRTDBGSYMBOL) DBGFR3AsSymbolByAddrA(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress, uint32_t fFlags,
|
---|
1159 | PRTGCINTPTR poffDisp, PRTDBGMOD phMod)
|
---|
1160 | {
|
---|
1161 | RTDBGSYMBOL SymInfo;
|
---|
1162 | int rc = DBGFR3AsSymbolByAddr(pUVM, hDbgAs, pAddress, fFlags, poffDisp, &SymInfo, phMod);
|
---|
1163 | if (RT_SUCCESS(rc))
|
---|
1164 | return RTDbgSymbolDup(&SymInfo);
|
---|
1165 | return NULL;
|
---|
1166 | }
|
---|
1167 |
|
---|
1168 |
|
---|
1169 | /**
|
---|
1170 | * Query a symbol by name.
|
---|
1171 | *
|
---|
1172 | * The symbol can be prefixed by a module name pattern to scope the search. The
|
---|
1173 | * pattern is a simple string pattern with '*' and '?' as wild chars. See
|
---|
1174 | * RTStrSimplePatternMatch().
|
---|
1175 | *
|
---|
1176 | * @returns VBox status code. See RTDbgAsSymbolByAddr.
|
---|
1177 | *
|
---|
1178 | * @param pUVM The user mode VM handle.
|
---|
1179 | * @param hDbgAs The address space handle.
|
---|
1180 | * @param pszSymbol The symbol to search for, maybe prefixed by a
|
---|
1181 | * module pattern.
|
---|
1182 | * @param pSymbol Where to return the symbol information.
|
---|
1183 | * The returned symbol name will be prefixed by
|
---|
1184 | * the module name as far as space allows.
|
---|
1185 | * @param phMod Where to return the module handle. Optional.
|
---|
1186 | */
|
---|
1187 | VMMR3DECL(int) DBGFR3AsSymbolByName(PUVM pUVM, RTDBGAS hDbgAs, const char *pszSymbol,
|
---|
1188 | PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod)
|
---|
1189 | {
|
---|
1190 | /*
|
---|
1191 | * Implement the special address space aliases the lazy way.
|
---|
1192 | */
|
---|
1193 | if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
|
---|
1194 | {
|
---|
1195 | int rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_RC, pszSymbol, pSymbol, phMod);
|
---|
1196 | if (RT_FAILURE(rc))
|
---|
1197 | rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_GLOBAL, pszSymbol, pSymbol, phMod);
|
---|
1198 | return rc;
|
---|
1199 | }
|
---|
1200 |
|
---|
1201 | /*
|
---|
1202 | * Input validation.
|
---|
1203 | */
|
---|
1204 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1205 | AssertPtrReturn(pSymbol, VERR_INVALID_POINTER);
|
---|
1206 | AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
|
---|
1207 | if (phMod)
|
---|
1208 | *phMod = NIL_RTDBGMOD;
|
---|
1209 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
1210 | if (hRealAS == NIL_RTDBGAS)
|
---|
1211 | return VERR_INVALID_HANDLE;
|
---|
1212 |
|
---|
1213 |
|
---|
1214 | /*
|
---|
1215 | * Do the lookup.
|
---|
1216 | */
|
---|
1217 | RTDBGMOD hMod;
|
---|
1218 | int rc = RTDbgAsSymbolByName(hRealAS, pszSymbol, pSymbol, &hMod);
|
---|
1219 | if (RT_SUCCESS(rc))
|
---|
1220 | {
|
---|
1221 | dbgfR3AsSymbolJoinNames(pSymbol, hMod);
|
---|
1222 | if (!phMod)
|
---|
1223 | RTDbgModRelease(hMod);
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 | return rc;
|
---|
1227 | }
|
---|
1228 |
|
---|
1229 |
|
---|
1230 | VMMR3DECL(int) DBGFR3AsLineByAddr(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress,
|
---|
1231 | PRTGCINTPTR poffDisp, PRTDBGLINE pLine, PRTDBGMOD phMod)
|
---|
1232 | {
|
---|
1233 | /*
|
---|
1234 | * Implement the special address space aliases the lazy way.
|
---|
1235 | */
|
---|
1236 | if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
|
---|
1237 | {
|
---|
1238 | int rc = DBGFR3AsLineByAddr(pUVM, DBGF_AS_RC, pAddress, poffDisp, pLine, phMod);
|
---|
1239 | if (RT_FAILURE(rc))
|
---|
1240 | rc = DBGFR3AsLineByAddr(pUVM, DBGF_AS_GLOBAL, pAddress, poffDisp, pLine, phMod);
|
---|
1241 | return rc;
|
---|
1242 | }
|
---|
1243 |
|
---|
1244 | /*
|
---|
1245 | * Input validation.
|
---|
1246 | */
|
---|
1247 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
|
---|
1248 | AssertReturn(DBGFR3AddrIsValid(pUVM, pAddress), VERR_INVALID_PARAMETER);
|
---|
1249 | AssertPtrNullReturn(poffDisp, VERR_INVALID_POINTER);
|
---|
1250 | AssertPtrReturn(pLine, VERR_INVALID_POINTER);
|
---|
1251 | AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
|
---|
1252 | if (poffDisp)
|
---|
1253 | *poffDisp = 0;
|
---|
1254 | if (phMod)
|
---|
1255 | *phMod = NIL_RTDBGMOD;
|
---|
1256 | RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
|
---|
1257 | if (hRealAS == NIL_RTDBGAS)
|
---|
1258 | return VERR_INVALID_HANDLE;
|
---|
1259 |
|
---|
1260 | /*
|
---|
1261 | * Do the lookup.
|
---|
1262 | */
|
---|
1263 | return RTDbgAsLineByAddr(hRealAS, pAddress->FlatPtr, poffDisp, pLine, phMod);
|
---|
1264 | }
|
---|
1265 |
|
---|
1266 |
|
---|
1267 | VMMR3DECL(PRTDBGLINE) DBGFR3AsLineByAddrA(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress,
|
---|
1268 | PRTGCINTPTR poffDisp, PRTDBGMOD phMod)
|
---|
1269 | {
|
---|
1270 | RTDBGLINE Line;
|
---|
1271 | int rc = DBGFR3AsLineByAddr(pUVM, hDbgAs, pAddress, poffDisp, &Line, phMod);
|
---|
1272 | if (RT_SUCCESS(rc))
|
---|
1273 | return RTDbgLineDup(&Line);
|
---|
1274 | return NULL;
|
---|
1275 | }
|
---|
1276 |
|
---|