1 | /** @file
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2 | * VM - The Virtual Machine, data.
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3 | */
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4 |
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5 | /*
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6 | * Copyright (C) 2006-2007 innotek GmbH
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7 | *
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8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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9 | * available from http://www.virtualbox.org. This file is free software;
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10 | * you can redistribute it and/or modify it under the terms of the GNU
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11 | * General Public License as published by the Free Software Foundation,
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12 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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13 | * distribution. VirtualBox OSE is distributed in the hope that it will
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14 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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15 | *
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16 | * If you received this file as part of a commercial VirtualBox
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17 | * distribution, then only the terms of your commercial VirtualBox
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18 | * license agreement apply instead of the previous paragraph.
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19 | */
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20 |
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21 |
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22 | #ifndef __VBox_vm_h__
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23 | #define __VBox_vm_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/cpum.h>
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28 | #include <VBox/stam.h>
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29 | #include <VBox/vmapi.h>
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30 | #include <VBox/sup.h>
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31 |
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32 |
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33 | /** @defgroup grp_vm The Virtual Machine
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34 | * @{
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35 | */
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36 |
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37 | /** The name of the Guest Context VMM Core module. */
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38 | #define VMMGC_MAIN_MODULE_NAME "VMMGC.gc"
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39 | /** The name of the Ring 0 Context VMM Core module. */
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40 | #define VMMR0_MAIN_MODULE_NAME "VMMR0.r0"
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41 |
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42 | /** VM Forced Action Flags.
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43 | *
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44 | * Use the VM_FF_SET() and VM_FF_CLEAR() macros to change the force
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45 | * action mask of a VM.
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46 | *
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47 | * @{
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48 | */
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49 | /** This action forces the VM to service check and pending interrups on the APIC. */
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50 | #define VM_FF_INTERRUPT_APIC BIT(0)
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51 | /** This action forces the VM to service check and pending interrups on the PIC. */
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52 | #define VM_FF_INTERRUPT_PIC BIT(1)
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53 | /** This action forces the VM to schedule and run pending timer (TM). */
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54 | #define VM_FF_TIMER BIT(2)
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55 | /** PDM Queues are pending. */
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56 | #define VM_FF_PDM_QUEUES BIT(3)
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57 | /** PDM DMA transfers are pending. */
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58 | #define VM_FF_PDM_DMA BIT(4)
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59 | /** PDM critical section unlocking is pending, process promptly upon return to R3. */
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60 | #define VM_FF_PDM_CRITSECT BIT(5)
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61 |
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62 | /** This action forces the VM to call DBGF so DBGF can service debugger
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63 | * requests in the emulation thread.
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64 | * This action flag stays asserted till DBGF clears it.*/
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65 | #define VM_FF_DBGF BIT(8)
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66 | /** This action forces the VM to service pending requests from other
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67 | * thread or requests which must be executed in another context. */
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68 | #define VM_FF_REQUEST BIT(9)
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69 | /** Terminate the VM immediately. */
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70 | #define VM_FF_TERMINATE BIT(10)
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71 | /** Reset the VM. (postponed) */
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72 | #define VM_FF_RESET BIT(11)
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73 |
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74 | /** This action forces the VM to resync the page tables before going
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75 | * back to execute guest code. (GLOBAL FLUSH) */
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76 | #define VM_FF_PGM_SYNC_CR3 BIT(16)
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77 | /** Same as VM_FF_PGM_SYNC_CR3 except that global pages can be skipped.
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78 | * (NON-GLOBAL FLUSH) */
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79 | #define VM_FF_PGM_SYNC_CR3_NON_GLOBAL BIT(17)
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80 | /** Check the interupt and trap gates */
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81 | #define VM_FF_TRPM_SYNC_IDT BIT(18)
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82 | /** Check Guest's TSS ring 0 stack */
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83 | #define VM_FF_SELM_SYNC_TSS BIT(19)
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84 | /** Check Guest's GDT table */
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85 | #define VM_FF_SELM_SYNC_GDT BIT(20)
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86 | /** Check Guest's LDT table */
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87 | #define VM_FF_SELM_SYNC_LDT BIT(21)
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88 | /** Inhibit interrupts pending. See EMGetInhibitInterruptsPC(). */
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89 | #define VM_FF_INHIBIT_INTERRUPTS BIT(22)
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90 |
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91 | /** CSAM needs to scan the page that's being executed */
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92 | #define VM_FF_CSAM_SCAN_PAGE BIT(24)
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93 | /** CSAM needs to do some homework. */
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94 | #define VM_FF_CSAM_PENDING_ACTION BIT(25)
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95 |
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96 | /** Force return to Ring-3. */
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97 | #define VM_FF_TO_R3 BIT(28)
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98 |
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99 | /** Suspend the VM - debug only. */
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100 | #define VM_FF_DEBUG_SUSPEND BIT(31)
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101 |
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102 | /** Externally forced actions. Used to quit the idle/wait loop. */
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103 | #define VM_FF_EXTERNAL_SUSPENDED_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_REQUEST)
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104 | /** Externally forced actions. Used to quit the idle/wait loop. */
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105 | #define VM_FF_EXTERNAL_HALTED_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_TIMER | VM_FF_INTERRUPT_APIC | VM_FF_INTERRUPT_PIC | VM_FF_REQUEST | VM_FF_PDM_QUEUES | VM_FF_PDM_DMA)
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106 | /** High priority pre-execution actions. */
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107 | #define VM_FF_HIGH_PRIORITY_PRE_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_INTERRUPT_APIC | VM_FF_INTERRUPT_PIC | VM_FF_TIMER | VM_FF_DEBUG_SUSPEND \
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108 | | VM_FF_PGM_SYNC_CR3 | VM_FF_PGM_SYNC_CR3_NON_GLOBAL | VM_FF_SELM_SYNC_TSS | VM_FF_TRPM_SYNC_IDT | VM_FF_SELM_SYNC_GDT | VM_FF_SELM_SYNC_LDT)
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109 | /** High priority pre raw-mode execution mask. */
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110 | #define VM_FF_HIGH_PRIORITY_PRE_RAW_MASK (VM_FF_PGM_SYNC_CR3 | VM_FF_PGM_SYNC_CR3_NON_GLOBAL | VM_FF_SELM_SYNC_TSS | VM_FF_TRPM_SYNC_IDT | VM_FF_SELM_SYNC_GDT | VM_FF_SELM_SYNC_LDT | VM_FF_INHIBIT_INTERRUPTS)
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111 | /** High priority post-execution actions. */
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112 | #define VM_FF_HIGH_PRIORITY_POST_MASK (VM_FF_PDM_CRITSECT|VM_FF_CSAM_PENDING_ACTION)
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113 | /** Normal priority post-execution actions. */
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114 | #define VM_FF_NORMAL_PRIORITY_POST_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_RESET | VM_FF_CSAM_SCAN_PAGE)
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115 | /** Normal priority actions. */
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116 | #define VM_FF_NORMAL_PRIORITY_MASK (VM_FF_REQUEST | VM_FF_PDM_QUEUES | VM_FF_PDM_DMA)
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117 | /** Flags to check before resuming guest execution. */
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118 | #define VM_FF_RESUME_GUEST_MASK (VM_FF_TO_R3)
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119 | /** All the forced flags. */
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120 | #define VM_FF_ALL_MASK (~0U)
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121 | /** All the forced flags. */
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122 | #define VM_FF_ALL_BUT_RAW_MASK (~(VM_FF_HIGH_PRIORITY_PRE_RAW_MASK | VM_FF_CSAM_PENDING_ACTION | VM_FF_PDM_CRITSECT))
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123 |
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124 | /** @} */
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125 |
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126 | /** @def VM_FF_SET
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127 | * Sets a force action flag.
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128 | *
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129 | * @param pVM VM Handle.
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130 | * @param fFlag The flag to set.
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131 | */
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132 | #if 1
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133 | # define VM_FF_SET(pVM, fFlag) ASMAtomicOrU32(&(pVM)->fForcedActions, (fFlag))
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134 | #else
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135 | # define VM_FF_SET(pVM, fFlag) \
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136 | do { ASMAtomicOrU32(&(pVM)->fForcedActions, (fFlag)); \
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137 | RTLogPrintf("VM_FF_SET : %08x %s - %s(%d) %s\n", (pVM)->fForcedActions, #fFlag, __FILE__, __LINE__, __FUNCTION__); \
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138 | } while (0)
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139 | #endif
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140 |
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141 | /** @def VM_FF_CLEAR
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142 | * Clears a force action flag.
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143 | *
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144 | * @param pVM VM Handle.
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145 | * @param fFlag The flag to clear.
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146 | */
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147 | #if 1
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148 | # define VM_FF_CLEAR(pVM, fFlag) ASMAtomicAndU32(&(pVM)->fForcedActions, ~(fFlag))
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149 | #else
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150 | # define VM_FF_CLEAR(pVM, fFlag) \
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151 | do { ASMAtomicAndU32(&(pVM)->fForcedActions, ~(fFlag)); \
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152 | RTLogPrintf("VM_FF_CLEAR: %08x %s - %s(%d) %s\n", (pVM)->fForcedActions, #fFlag, __FILE__, __LINE__, __FUNCTION__); \
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153 | } while (0)
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154 | #endif
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155 |
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156 | /** @def VM_FF_ISSET
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157 | * Checks if a force action flag is set.
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158 | *
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159 | * @param pVM VM Handle.
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160 | * @param fFlag The flag to check.
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161 | */
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162 | #define VM_FF_ISSET(pVM, fFlag) (((pVM)->fForcedActions & (fFlag)) == (fFlag))
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163 |
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164 | /** @def VM_FF_ISPENDING
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165 | * Checks if one or more force action in the specified set is pending.
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166 | *
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167 | * @param pVM VM Handle.
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168 | * @param fFlags The flags to check for.
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169 | */
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170 | #define VM_FF_ISPENDING(pVM, fFlags) ((pVM)->fForcedActions & (fFlags))
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171 |
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172 |
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173 | /** @def VM_IS_EMT
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174 | * Checks if the current thread is the emulation thread (EMT).
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175 | *
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176 | * @remark The ring-0 variation will need attention if we expand the ring-0
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177 | * code to let threads other than EMT mess around with the VM.
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178 | */
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179 | #ifdef IN_GC
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180 | # define VM_IS_EMT(pVM) true
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181 | #elif defined(IN_RING0)
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182 | # define VM_IS_EMT(pVM) true
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183 | #else
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184 | # define VM_IS_EMT(pVM) ((pVM)->NativeThreadEMT == RTThreadNativeSelf())
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185 | #endif
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186 |
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187 | /** @def VM_ASSERT_EMT
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188 | * Asserts that the current thread IS the emulation thread (EMT).
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189 | */
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190 | #ifdef IN_GC
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191 | # define VM_ASSERT_EMT(pVM) Assert(VM_IS_EMT(pVM))
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192 | #elif defined(IN_RING0)
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193 | # define VM_ASSERT_EMT(pVM) Assert(VM_IS_EMT(pVM))
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194 | #else
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195 | # define VM_ASSERT_EMT(pVM) \
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196 | AssertMsg(VM_IS_EMT(pVM), \
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197 | ("Not emulation thread! Thread=%RTnthrd ThreadEMT=%RTnthrd\n", RTThreadNativeSelf(), pVM->NativeThreadEMT))
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198 | #endif
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199 |
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200 |
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201 | /**
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202 | * Asserts that the current thread is NOT the emulation thread.
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203 | */
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204 | #define VM_ASSERT_OTHER_THREAD(pVM) \
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205 | AssertMsg(!VM_IS_EMT(pVM), ("Not other thread!!\n"))
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206 |
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207 |
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208 |
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209 | /** This is the VM structure.
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210 | *
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211 | * It contains (nearly?) all the VM data which have to be available in all
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212 | * contexts. Even if it contains all the data the idea is to use APIs not
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213 | * to modify all the members all around the place. Therefore we make use of
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214 | * unions to hide everything which isn't local to the current source module.
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215 | * This means we'll have to pay a little bit of attention when adding new
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216 | * members to structures in the unions and make sure to keep the padding sizes
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217 | * up to date.
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218 | *
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219 | * Run tstVMStructSize after update!
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220 | */
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221 | typedef struct VM
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222 | {
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223 | /** The state of the VM.
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224 | * This field is read only to everyone except the VM and EM. */
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225 | VMSTATE enmVMState;
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226 | /** Forced action flags.
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227 | * See the VM_FF_* \#defines. Updated atomically.
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228 | */
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229 | volatile uint32_t fForcedActions;
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230 | /** Pointer to the array of page descriptors for the VM structure allocation. */
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231 | R3PTRTYPE(PSUPPAGE) paVMPagesR3;
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232 | /** Session handle. For use when calling SUPR0 APIs. */
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233 | HCPTRTYPE(PSUPDRVSESSION) pSession;
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234 | /** Pointer to the next VM.
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235 | * We keep a per process list of VM for the event that a process could
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236 | * contain more than one VM.
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237 | */
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238 | HCPTRTYPE(struct VM *) pNext;
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239 | /** Host Context VM Pointer.
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240 | * @obsolete don't use in new code! */
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241 | HCPTRTYPE(struct VM *) pVMHC;
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242 | /** Ring-3 Host Context VM Pointer. */
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243 | R3PTRTYPE(struct VM *) pVMR3;
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244 | /** Ring-0 Host Context VM Pointer. */
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245 | R0PTRTYPE(struct VM *) pVMR0;
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246 | /** Guest Context VM Pointer. */
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247 | GCPTRTYPE(struct VM *) pVMGC;
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248 |
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249 | /** @name Public VMM Switcher APIs
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250 | * @{ */
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251 | /**
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252 | * Assembly switch entry point for returning to host context.
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253 | * This function will clean up the stack frame.
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254 | *
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255 | * @param eax The return code, register.
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256 | * @param Ctx The guest core context.
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257 | * @remark Assume interrupts disabled.
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258 | */
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259 | RTGCPTR pfnVMMGCGuestToHostAsmGuestCtx/*(int32_t eax, CPUMCTXCORE Ctx)*/;
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260 |
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261 | /**
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262 | * Assembly switch entry point for returning to host context.
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263 | *
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264 | * This is an alternative entry point which we'll be using when the we have the
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265 | * hypervisor context and need to save that before going to the host.
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266 | *
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267 | * This is typically useful when abandoning the hypervisor because of a trap
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268 | * and want the trap state to be saved.
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269 | *
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270 | * @param eax The return code, register.
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271 | * @param ecx Pointer to the hypervisor core context, register.
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272 | * @remark Assume interrupts disabled.
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273 | */
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274 | RTGCPTR pfnVMMGCGuestToHostAsmHyperCtx/*(int32_t eax, PCPUMCTXCORE ecx)*/;
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275 |
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276 | /**
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277 | * Assembly switch entry point for returning to host context.
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278 | *
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279 | * This is an alternative to the two *Ctx APIs and implies that the context has already
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280 | * been saved, or that it's just a brief return to HC and that the caller intends to resume
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281 | * whatever it is doing upon 'return' from this call.
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282 | *
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283 | * @param eax The return code, register.
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284 | * @remark Assume interrupts disabled.
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285 | */
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286 | RTGCPTR pfnVMMGCGuestToHostAsm/*(int32_t eax)*/;
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287 | /** @} */
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288 |
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289 |
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290 | /** @name Various VM data owned by VM.
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291 | * @{ */
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292 | /** The thread handle of the emulation thread.
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293 | * Use the VM_IS_EMT() macro to check if executing in EMT. */
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294 | RTTHREAD ThreadEMT;
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295 | /** The native handle of ThreadEMT. Getting the native handle
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296 | * is generally faster than getting the IPRT one (except on OS/2 :-). */
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297 | RTNATIVETHREAD NativeThreadEMT;
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298 | /** @} */
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299 |
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300 |
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301 | /** @name Various items that are frequently accessed.
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302 | * @{ */
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303 | /** Raw ring-3 indicator. */
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304 | bool fRawR3Enabled;
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305 | /** Raw ring-0 indicator. */
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306 | bool fRawR0Enabled;
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307 | /** PATM enabled flag.
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308 | * This is placed here for performance reasons. */
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309 | bool fPATMEnabled;
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310 | /** CSAM enabled flag.
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311 | * This is placed here for performance reasons. */
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312 | bool fCSAMEnabled;
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313 |
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314 | /** Hardware VM support is available and enabled.
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315 | * This is placed here for performance reasons. */
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316 | bool fHWACCMEnabled;
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317 | /** @} */
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318 |
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319 |
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320 | /* padding to make gnuc put the StatQemuToGC where msc does. */
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321 | /*#if HC_ARCH_BITS == 32
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322 | uint32_t padding0;
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323 | #endif */
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324 |
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325 | /** Profiling the total time from Qemu to GC. */
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326 | STAMPROFILEADV StatTotalQemuToGC;
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327 | /** Profiling the total time from GC to Qemu. */
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328 | STAMPROFILEADV StatTotalGCToQemu;
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329 | /** Profiling the total time spent in GC. */
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330 | STAMPROFILEADV StatTotalInGC;
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331 | /** Profiling the total time spent not in Qemu. */
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332 | STAMPROFILEADV StatTotalInQemu;
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333 | /** Profiling the VMMSwitcher code for going to GC. */
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334 | STAMPROFILEADV StatSwitcherToGC;
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335 | /** Profiling the VMMSwitcher code for going to HC. */
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336 | STAMPROFILEADV StatSwitcherToHC;
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337 | STAMPROFILEADV StatSwitcherSaveRegs;
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338 | STAMPROFILEADV StatSwitcherSysEnter;
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339 | STAMPROFILEADV StatSwitcherDebug;
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340 | STAMPROFILEADV StatSwitcherCR0;
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341 | STAMPROFILEADV StatSwitcherCR4;
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342 | STAMPROFILEADV StatSwitcherJmpCR3;
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343 | STAMPROFILEADV StatSwitcherRstrRegs;
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344 | STAMPROFILEADV StatSwitcherLgdt;
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345 | STAMPROFILEADV StatSwitcherLidt;
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346 | STAMPROFILEADV StatSwitcherLldt;
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347 | STAMPROFILEADV StatSwitcherTSS;
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348 |
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349 | /* padding - the unions must be aligned on 32 bytes boundraries. */
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350 | uint32_t padding[HC_ARCH_BITS == 32 ? 6 : 6];
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351 |
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352 | /** CPUM part. */
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353 | union
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354 | {
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355 | #ifdef __CPUMInternal_h__
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356 | struct CPUM s;
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357 | #endif
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358 | #ifdef VBOX_WITH_HYBIRD_32BIT_KERNEL
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359 | char padding[3584]; /* multiple of 32 */
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360 | #else
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361 | char padding[HC_ARCH_BITS == 32 ? 3424 : 3552]; /* multiple of 32 */
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362 | #endif
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363 | } cpum;
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364 |
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365 | /** VMM part. */
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366 | union
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367 | {
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368 | #ifdef __VMMInternal_h__
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369 | struct VMM s;
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370 | #endif
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371 | char padding[1024]; /* multiple of 32 */
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372 | } vmm;
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373 |
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374 | /** PGM part. */
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375 | union
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376 | {
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377 | #ifdef __PGMInternal_h__
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378 | struct PGM s;
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379 | #endif
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380 | char padding[50*1024]; /* multiple of 32 */
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381 | } pgm;
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382 |
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383 | /** HWACCM part. */
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384 | union
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385 | {
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386 | #ifdef __HWACCMInternal_h__
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387 | struct HWACCM s;
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388 | #endif
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389 | char padding[1024]; /* multiple of 32 */
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390 | } hwaccm;
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391 |
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392 | /** TRPM part. */
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393 | union
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394 | {
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395 | #ifdef __TRPMInternal_h__
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396 | struct TRPM s;
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397 | #endif
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398 | char padding[5344]; /* multiple of 32 */
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399 | } trpm;
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400 |
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401 | /** SELM part. */
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402 | union
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403 | {
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404 | #ifdef __SELMInternal_h__
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405 | struct SELM s;
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406 | #endif
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407 | char padding[544]; /* multiple of 32 */
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408 | } selm;
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409 |
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410 | /** MM part. */
|
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411 | union
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412 | {
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413 | #ifdef __MMInternal_h__
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414 | struct MM s;
|
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415 | #endif
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416 | char padding[128]; /* multiple of 32 */
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417 | } mm;
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418 |
|
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419 | /** CFGM part. */
|
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420 | union
|
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421 | {
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422 | #ifdef __CFGMInternal_h__
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423 | struct CFGM s;
|
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424 | #endif
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425 | char padding[32]; /* multiple of 32 */
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426 | } cfgm;
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427 |
|
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428 | /** PDM part. */
|
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429 | union
|
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430 | {
|
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431 | #ifdef __PDMInternal_h__
|
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432 | struct PDM s;
|
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433 | #endif
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434 | char padding[1024]; /* multiple of 32 */
|
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435 | } pdm;
|
---|
436 |
|
---|
437 | /** IOM part. */
|
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438 | union
|
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439 | {
|
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440 | #ifdef __IOMInternal_h__
|
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441 | struct IOM s;
|
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442 | #endif
|
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443 | char padding[4544]; /* multiple of 32 */
|
---|
444 | } iom;
|
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445 |
|
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446 | /** PATM part. */
|
---|
447 | union
|
---|
448 | {
|
---|
449 | #ifdef __PATMInternal_h__
|
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450 | struct PATM s;
|
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451 | #endif
|
---|
452 | char padding[768]; /* multiple of 32 */
|
---|
453 | } patm;
|
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454 |
|
---|
455 | /** CSAM part. */
|
---|
456 | union
|
---|
457 | {
|
---|
458 | #ifdef __CSAMInternal_h__
|
---|
459 | struct CSAM s;
|
---|
460 | #endif
|
---|
461 | char padding[3328]; /* multiple of 32 */
|
---|
462 | } csam;
|
---|
463 |
|
---|
464 | /** EM part. */
|
---|
465 | union
|
---|
466 | {
|
---|
467 | #ifdef __EMInternal_h__
|
---|
468 | struct EM s;
|
---|
469 | #endif
|
---|
470 | char padding[1344]; /* multiple of 32 */
|
---|
471 | } em;
|
---|
472 |
|
---|
473 | /** TM part. */
|
---|
474 | union
|
---|
475 | {
|
---|
476 | #ifdef __TMInternal_h__
|
---|
477 | struct TM s;
|
---|
478 | #endif
|
---|
479 | char padding[1280]; /* multiple of 32 */
|
---|
480 | } tm;
|
---|
481 |
|
---|
482 | /** DBGF part. */
|
---|
483 | union
|
---|
484 | {
|
---|
485 | #ifdef __DBGFInternal_h__
|
---|
486 | struct DBGF s;
|
---|
487 | #endif
|
---|
488 | char padding[HC_ARCH_BITS == 32 ? 1888 : 1920]; /* multiple of 32 */
|
---|
489 | } dbgf;
|
---|
490 |
|
---|
491 | /** STAM part. */
|
---|
492 | union
|
---|
493 | {
|
---|
494 | #ifdef __STAMInternal_h__
|
---|
495 | struct STAM s;
|
---|
496 | #endif
|
---|
497 | char padding[32]; /* multiple of 32 */
|
---|
498 | } stam;
|
---|
499 |
|
---|
500 | /** SSM part. */
|
---|
501 | union
|
---|
502 | {
|
---|
503 | #ifdef __SSMInternal_h__
|
---|
504 | struct SSM s;
|
---|
505 | #endif
|
---|
506 | char padding[32]; /* multiple of 32 */
|
---|
507 | } ssm;
|
---|
508 |
|
---|
509 | /** VM part. */
|
---|
510 | union
|
---|
511 | {
|
---|
512 | #ifdef __VMInternal_h__
|
---|
513 | struct VMINT s;
|
---|
514 | #endif
|
---|
515 | char padding[768]; /* multiple of 32 */
|
---|
516 | } vm;
|
---|
517 |
|
---|
518 | /** REM part. */
|
---|
519 | union
|
---|
520 | {
|
---|
521 | #ifdef __REMInternal_h__
|
---|
522 | struct REM s;
|
---|
523 | #endif
|
---|
524 | char padding[HC_ARCH_BITS == 32 ? 0x6b00 : 0xbf00]; /* multiple of 32 */
|
---|
525 | } rem;
|
---|
526 | } VM;
|
---|
527 |
|
---|
528 | /** Pointer to a VM. */
|
---|
529 | #ifndef __VBox_types_h__
|
---|
530 | typedef struct VM *PVM;
|
---|
531 | #endif
|
---|
532 |
|
---|
533 |
|
---|
534 | #ifdef IN_GC
|
---|
535 | __BEGIN_DECLS
|
---|
536 |
|
---|
537 | /** The VM structure.
|
---|
538 | * This is imported from the VMMGCBuiltin module, i.e. it's a one
|
---|
539 | * of those magic globals which we should avoid using.
|
---|
540 | */
|
---|
541 | extern DECLIMPORT(VM) g_VM;
|
---|
542 |
|
---|
543 | __END_DECLS
|
---|
544 | #endif
|
---|
545 |
|
---|
546 | /** @} */
|
---|
547 |
|
---|
548 | #endif
|
---|
549 |
|
---|