1 | /* $Id: TRPMInternal.h 2981 2007-06-01 16:01:28Z vboxsync $ */
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2 | /** @file
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3 | * TRPM - Internal header file.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2007 innotek GmbH
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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 as published by the Free Software Foundation,
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13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * If you received this file as part of a commercial VirtualBox
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18 | * distribution, then only the terms of your commercial VirtualBox
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19 | * license agreement apply instead of the previous paragraph.
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20 | */
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21 |
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22 | #ifndef __TRPMInternal_h__
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23 | #define __TRPMInternal_h__
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24 |
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25 | #include <VBox/cdefs.h>
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26 | #include <VBox/types.h>
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27 | #include <VBox/stam.h>
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28 | #include <VBox/cpum.h>
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29 |
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30 |
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31 | #if !defined(IN_TRPM_R3) && !defined(IN_TRPM_R0) && !defined(IN_TRPM_GC)
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32 | # error "Not in TRPM! This is an internal header!"
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33 | #endif
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34 |
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35 | /* Enable to allow trap forwarding in GC. */
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36 | #define TRPM_FORWARD_TRAPS_IN_GC
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37 |
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38 | /** First interrupt handler. Used for validating input. */
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39 | #define TRPM_HANDLER_INT_BASE 0x20
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40 |
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41 | __BEGIN_DECLS
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42 |
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43 |
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44 | /** @defgroup grp_trpm_int Internals
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45 | * @ingroup grp_trpm
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46 | * @internal
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47 | * @{
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48 | */
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49 |
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50 | /** @name TRPMGCTrapIn* flags.
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51 | * The lower bits are offsets into the CPUMCTXCORE structure.
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52 | * @{ */
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53 | /** The mask for the operation. */
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54 | #define TRPM_TRAP_IN_OP_MASK 0xffff
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55 | /** Traps on MOV GS, eax. */
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56 | #define TRPM_TRAP_IN_MOV_GS 1
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57 | /** Traps on MOV FS, eax. */
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58 | #define TRPM_TRAP_IN_MOV_FS 2
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59 | /** Traps on MOV ES, eax. */
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60 | #define TRPM_TRAP_IN_MOV_ES 3
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61 | /** Traps on MOV DS, eax. */
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62 | #define TRPM_TRAP_IN_MOV_DS 4
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63 | /** Traps on IRET. */
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64 | #define TRPM_TRAP_IN_IRET 5
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65 | /** Set if this is a V86 resume. */
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66 | #define TRPM_TRAP_IN_V86 BIT(30)
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67 | /** If set this is a hypervisor register set. If cleared it's a guest set. */
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68 | #define TRPM_TRAP_IN_HYPER BIT(31)
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69 | /** @} */
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70 |
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71 |
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72 | /**
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73 | * Converts a TRPM pointer into a VM pointer.
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74 | * @returns Pointer to the VM structure the TRPM is part of.
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75 | * @param pTRPM Pointer to TRPM instance data.
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76 | */
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77 | #define TRPM2VM(pTRPM) ( (PVM)((char*)pTRPM - pTRPM->offVM) )
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78 |
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79 |
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80 | /**
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81 | * TRPM Data (part of VM)
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82 | *
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83 | * IMPORTANT! Keep the nasm version of this struct up-to-date.
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84 | */
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85 | #pragma pack(4)
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86 | typedef struct TRPM
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87 | {
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88 | /** Offset to the VM structure.
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89 | * See TRPM2VM(). */
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90 | RTINT offVM;
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91 |
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92 | /** Active Interrupt or trap vector number.
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93 | * If not ~0U this indicates that we're currently processing
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94 | * a interrupt, trap, fault, abort, whatever which have arrived
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95 | * at that vector number.
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96 | */
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97 | RTUINT uActiveVector;
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98 |
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99 | /** Active trap type. */
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100 | TRPMEVENT enmActiveType;
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101 |
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102 | /** Errorcode for the active interrupt/trap. */
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103 | RTGCUINT uActiveErrorCode;
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104 |
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105 | /** CR2 at the time of the active exception. */
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106 | RTGCUINTPTR uActiveCR2;
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107 |
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108 | /** Saved trap vector number. */
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109 | RTGCUINT uSavedVector;
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110 |
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111 | /** Saved trap type. */
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112 | TRPMEVENT enmSavedType;
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113 |
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114 | /** Saved errorcode. */
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115 | RTGCUINT uSavedErrorCode;
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116 |
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117 | /** Saved cr2. */
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118 | RTGCUINTPTR uSavedCR2;
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119 |
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120 | /** Previous trap vector # - for debugging. */
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121 | RTGCUINT uPrevVector;
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122 |
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123 | /** IDT monitoring and sync flag */
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124 | RTUINT fDisableMonitoring; /** @todo r=bird: bool and 7 byte achPadding1. */
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125 |
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126 | /** Padding to get the IDTs at a 16 byte alignement. */
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127 | char achPadding1[4];
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128 |
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129 | /** IDTs. Aligned at 16 byte offset for speed. */
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130 | VBOXIDTE aIdt[256];
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131 |
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132 | /** Bitmap for IDTEs that contain PATM handlers. (needed for relocation) */
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133 | uint32_t au32IdtPatched[8];
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134 |
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135 | /** Temporary Hypervisor trap handlers.
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136 | * NULL means default action. */
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137 | RTGCPTR aTmpTrapHandlers[256];
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138 |
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139 | /** GC Pointer to the IDT shadow area (aIdt) placed in Hypervisor memory arena. */
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140 | RTGCPTR GCPtrIdt;
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141 | /** Current (last) Guest's IDTR. */
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142 | VBOXIDTR GuestIdtr;
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143 |
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144 | /** padding. */
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145 | uint8_t au8Padding[2];
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146 |
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147 | /** Checked trap & interrupt handler array */
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148 | RTGCPTR aGuestTrapHandler[256];
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149 |
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150 | /** GC: The number of times writes to the Guest IDT were detected. */
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151 | STAMCOUNTER StatGCWriteGuestIDTFault;
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152 | STAMCOUNTER StatGCWriteGuestIDTHandled;
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153 |
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154 | /** HC: Profiling of the TRPMR3SyncIDT() method. */
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155 | STAMPROFILE StatSyncIDT;
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156 | /** GC: Statistics for the trap handlers. */
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157 | STAMPROFILEADV aStatGCTraps[0x14];
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158 |
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159 | STAMCOUNTER StatForwardFailNoHandler;
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160 | STAMCOUNTER StatForwardFailPatchAddr;
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161 | STAMCOUNTER StatForwardFailGC;
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162 | STAMCOUNTER StatForwardFailHC;
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163 |
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164 | STAMPROFILEADV StatForwardProfGC;
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165 | STAMPROFILEADV StatForwardProfHC;
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166 | STAMPROFILEADV StatTrap0dDisasm;
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167 |
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168 | /* R3: Statistics for interrupt handlers (allocated on the hypervisor heap). */
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169 | R3PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR3;
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170 | /* R0: Statistics for interrupt handlers (allocated on the hypervisor heap). */
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171 | R0PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR0;
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172 | /* GC: Statistics for interrupt handlers (allocated on the hypervisor heap). */
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173 | GCPTRTYPE(PSTAMCOUNTER) paStatForwardedIRQGC;
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174 | } TRPM;
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175 | #pragma pack()
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176 |
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177 | /** Pointer to TRPM Data. */
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178 | typedef TRPM *PTRPM;
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179 |
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180 | TRPMGCDECL(int) trpmgcGuestIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange);
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181 | TRPMGCDECL(int) trpmgcShadowIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange);
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182 |
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183 | /**
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184 | * Clear guest trap/interrupt gate handler
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185 | *
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186 | * @returns VBox status code.
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187 | * @param pVM The VM to operate on.
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188 | * @param iTrap Interrupt/trap number.
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189 | */
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190 | TRPMDECL(int) trpmClearGuestTrapHandler(PVM pVM, unsigned iTrap);
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191 |
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192 |
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193 | #ifdef IN_RING3
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194 |
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195 | /**
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196 | * Clear passthrough interrupt gate handler (reset to default handler)
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197 | *
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198 | * @returns VBox status code.
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199 | * @param pVM The VM to operate on.
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200 | * @param iTrap Trap/interrupt gate number.
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201 | */
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202 | TRPMR3DECL(int) trpmR3ClearPassThroughHandler(PVM pVM, unsigned iTrap);
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203 |
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204 | #endif
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205 |
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206 |
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207 | #ifdef IN_RING0
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208 |
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209 | /**
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210 | * Calls the interrupt gate as if we received an interrupt while in Ring-0.
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211 | *
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212 | * @param uIP The interrupt gate IP.
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213 | * @param SelCS The interrupt gate CS.
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214 | * @param RSP The interrupt gate RSP. ~0 if no stack switch should take place. (only AMD64)
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215 | */
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216 | DECLASM(void) trpmR0DispatchHostInterrupt(RTR0UINTPTR uIP, RTSEL SelCS, RTR0UINTPTR RSP);
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217 |
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218 | /**
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219 | * Issues a software interrupt to the specified interrupt vector.
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220 | *
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221 | * @param uActiveVector The vector number.
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222 | */
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223 | DECLASM(void) trpmR0DispatchHostInterruptSimple(RTUINT uActiveVector);
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224 |
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225 | # ifndef VBOX_WITHOUT_IDT_PATCHING
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226 | /**
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227 | * Code used for the dispatching of interrupts in HC.
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228 | * @internal
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229 | */
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230 | DECLASM(int) trpmR0InterruptDispatcher(void);
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231 | # endif /* !VBOX_WITHOUT_IDT_PATCHING */
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232 |
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233 | #endif
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234 |
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235 | /** @} */
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236 |
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237 | __END_DECLS
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238 |
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239 | #endif
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