1 | /* $Id: EMHM.cpp 45728 2013-04-25 12:08:17Z vboxsync $ */
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2 | /** @file
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3 | * EM - Execution Monitor / Manager - hardware virtualization
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2013 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 | * Header Files *
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20 | *******************************************************************************/
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21 | #define LOG_GROUP LOG_GROUP_EM
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22 | #include <VBox/vmm/em.h>
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23 | #include <VBox/vmm/vmm.h>
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24 | #include <VBox/vmm/csam.h>
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25 | #include <VBox/vmm/selm.h>
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26 | #include <VBox/vmm/trpm.h>
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27 | #include <VBox/vmm/iem.h>
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28 | #include <VBox/vmm/iom.h>
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29 | #include <VBox/vmm/dbgf.h>
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30 | #include <VBox/vmm/pgm.h>
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31 | #ifdef VBOX_WITH_REM
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32 | # include <VBox/vmm/rem.h>
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33 | #endif
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34 | #include <VBox/vmm/tm.h>
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35 | #include <VBox/vmm/mm.h>
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36 | #include <VBox/vmm/ssm.h>
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37 | #include <VBox/vmm/pdmapi.h>
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38 | #include <VBox/vmm/pdmcritsect.h>
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39 | #include <VBox/vmm/pdmqueue.h>
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40 | #include <VBox/vmm/hm.h>
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41 | #include "EMInternal.h"
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42 | #include <VBox/vmm/vm.h>
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43 | #include <VBox/vmm/cpumdis.h>
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44 | #include <VBox/dis.h>
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45 | #include <VBox/disopcode.h>
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46 | #include <VBox/vmm/dbgf.h>
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47 | #include "VMMTracing.h"
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48 |
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49 | #include <iprt/asm.h>
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50 |
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51 |
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52 | /*******************************************************************************
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53 | * Defined Constants And Macros *
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54 | *******************************************************************************/
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55 | #if 0 /* Disabled till after 2.1.0 when we've time to test it. */
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56 | #define EM_NOTIFY_HM
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57 | #endif
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58 |
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59 |
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60 | /*******************************************************************************
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61 | * Internal Functions *
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62 | *******************************************************************************/
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63 | DECLINLINE(int) emR3ExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
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64 | static int emR3ExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
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65 | static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
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66 |
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67 | #define EMHANDLERC_WITH_HM
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68 | #include "EMHandleRCTmpl.h"
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69 |
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70 |
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71 | #if defined(DEBUG) && defined(SOME_UNUSED_FUNCTIONS)
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72 |
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73 | /**
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74 | * Steps hardware accelerated mode.
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75 | *
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76 | * @returns VBox status code.
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77 | * @param pVM Pointer to the VM.
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78 | * @param pVCpu Pointer to the VMCPU.
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79 | */
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80 | static int emR3HmStep(PVM pVM, PVMCPU pVCpu)
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81 | {
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82 | Assert(pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM);
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83 |
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84 | int rc;
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85 | PCPUMCTX pCtx = pVCpu->em.s.pCtx;
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86 | # ifdef VBOX_WITH_RAW_MODE
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87 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT | VMCPU_FF_TRPM_SYNC_IDT | VMCPU_FF_SELM_SYNC_TSS));
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88 | # endif
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89 |
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90 | /*
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91 | * Check vital forced actions, but ignore pending interrupts and timers.
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92 | */
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93 | if ( VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
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94 | || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
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95 | {
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96 | rc = emR3HmForcedActions(pVM, pVCpu, pCtx);
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97 | if (rc != VINF_SUCCESS)
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98 | return rc;
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99 | }
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100 | /*
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101 | * Set flags for single stepping.
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102 | */
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103 | CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) | X86_EFL_TF | X86_EFL_RF);
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104 |
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105 | /*
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106 | * Single step.
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107 | * We do not start time or anything, if anything we should just do a few nanoseconds.
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108 | */
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109 | do
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110 | {
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111 | rc = VMMR3HmRunGC(pVM, pVCpu);
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112 | } while ( rc == VINF_SUCCESS
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113 | || rc == VINF_EM_RAW_INTERRUPT);
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114 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
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115 |
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116 | /*
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117 | * Make sure the trap flag is cleared.
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118 | * (Too bad if the guest is trying to single step too.)
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119 | */
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120 | CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) & ~X86_EFL_TF);
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121 |
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122 | /*
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123 | * Deal with the return codes.
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124 | */
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125 | rc = emR3HighPriorityPostForcedActions(pVM, pVCpu, rc);
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126 | rc = emR3HmHandleRC(pVM, pVCpu, pCtx, rc);
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127 | return rc;
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128 | }
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129 |
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130 |
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131 | static int emR3SingleStepExecHm(PVM pVM, PVMCPU pVCpu, uint32_t cIterations)
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132 | {
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133 | int rc = VINF_SUCCESS;
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134 | EMSTATE enmOldState = pVCpu->em.s.enmState;
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135 | pVCpu->em.s.enmState = EMSTATE_DEBUG_GUEST_HM;
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136 |
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137 | Log(("Single step BEGIN:\n"));
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138 | for (uint32_t i = 0; i < cIterations; i++)
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139 | {
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140 | DBGFR3PrgStep(pVCpu);
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141 | DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "RSS");
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142 | rc = emR3HmStep(pVM, pVCpu);
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143 | if ( rc != VINF_SUCCESS
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144 | || !HMR3CanExecuteGuest(pVM, pVCpu->em.s.pCtx))
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145 | break;
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146 | }
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147 | Log(("Single step END: rc=%Rrc\n", rc));
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148 | CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) & ~X86_EFL_TF);
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149 | pVCpu->em.s.enmState = enmOldState;
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150 | return rc == VINF_SUCCESS ? VINF_EM_RESCHEDULE_REM : rc;
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151 | }
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152 |
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153 | #endif /* DEBUG */
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154 |
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155 |
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156 | /**
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157 | * Executes one (or perhaps a few more) instruction(s).
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158 | *
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159 | * @returns VBox status code suitable for EM.
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160 | *
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161 | * @param pVM Pointer to the VM.
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162 | * @param pVCpu Pointer to the VMCPU.
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163 | * @param rcRC Return code from RC.
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164 | * @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
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165 | * instruction and prefix the log output with this text.
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166 | */
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167 | #ifdef LOG_ENABLED
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168 | static int emR3ExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
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169 | #else
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170 | static int emR3ExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
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171 | #endif
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172 | {
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173 | #ifdef LOG_ENABLED
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174 | PCPUMCTX pCtx = pVCpu->em.s.pCtx;
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175 | #endif
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176 | int rc;
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177 | NOREF(rcRC);
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178 |
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179 | /*
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180 | *
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181 | * The simple solution is to use the recompiler.
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182 | * The better solution is to disassemble the current instruction and
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183 | * try handle as many as possible without using REM.
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184 | *
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185 | */
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186 |
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187 | #ifdef LOG_ENABLED
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188 | /*
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189 | * Disassemble the instruction if requested.
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190 | */
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191 | if (pszPrefix)
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192 | {
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193 | DBGFR3_INFO_LOG(pVM, "cpumguest", pszPrefix);
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194 | DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
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195 | }
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196 | #endif /* LOG_ENABLED */
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197 |
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198 | #if 0
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199 | /* Try our own instruction emulator before falling back to the recompiler. */
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200 | DISCPUSTATE Cpu;
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201 | rc = CPUMR3DisasmInstrCPU(pVM, pVCpu, pCtx, pCtx->rip, &Cpu, "GEN EMU");
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202 | if (RT_SUCCESS(rc))
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203 | {
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204 | switch (Cpu.pCurInstr->uOpcode)
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205 | {
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206 | /* @todo we can do more now */
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207 | case OP_MOV:
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208 | case OP_AND:
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209 | case OP_OR:
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210 | case OP_XOR:
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211 | case OP_POP:
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212 | case OP_INC:
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213 | case OP_DEC:
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214 | case OP_XCHG:
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215 | STAM_PROFILE_START(&pVCpu->em.s.StatMiscEmu, a);
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216 | rc = EMInterpretInstructionCpuUpdtPC(pVM, pVCpu, &Cpu, CPUMCTX2CORE(pCtx), 0);
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217 | if (RT_SUCCESS(rc))
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218 | {
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219 | #ifdef EM_NOTIFY_HM
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220 | if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
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221 | HMR3NotifyEmulated(pVCpu);
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222 | #endif
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223 | STAM_PROFILE_STOP(&pVCpu->em.s.StatMiscEmu, a);
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224 | return rc;
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225 | }
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226 | if (rc != VERR_EM_INTERPRETER)
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227 | AssertMsgFailedReturn(("rc=%Rrc\n", rc), rc);
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228 | STAM_PROFILE_STOP(&pVCpu->em.s.StatMiscEmu, a);
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229 | break;
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230 | }
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231 | }
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232 | #endif /* 0 */
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233 | STAM_PROFILE_START(&pVCpu->em.s.StatREMEmu, a);
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234 | Log(("EMINS: %04x:%RGv RSP=%RGv\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip, (RTGCPTR)pCtx->rsp));
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235 | #ifdef VBOX_WITH_REM
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236 | EMRemLock(pVM);
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237 | /* Flush the recompiler TLB if the VCPU has changed. */
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238 | if (pVM->em.s.idLastRemCpu != pVCpu->idCpu)
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239 | CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL);
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240 | pVM->em.s.idLastRemCpu = pVCpu->idCpu;
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241 |
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242 | rc = REMR3EmulateInstruction(pVM, pVCpu);
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243 | EMRemUnlock(pVM);
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244 | #else
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245 | rc = VBOXSTRICTRC_TODO(IEMExecOne(pVCpu)); NOREF(pVM);
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246 | #endif
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247 | STAM_PROFILE_STOP(&pVCpu->em.s.StatREMEmu, a);
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248 |
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249 | #ifdef EM_NOTIFY_HM
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250 | if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
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251 | HMR3NotifyEmulated(pVCpu);
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252 | #endif
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253 | return rc;
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254 | }
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255 |
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256 |
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257 | /**
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258 | * Executes one (or perhaps a few more) instruction(s).
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259 | * This is just a wrapper for discarding pszPrefix in non-logging builds.
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260 | *
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261 | * @returns VBox status code suitable for EM.
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262 | * @param pVM Pointer to the VM.
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263 | * @param pVCpu Pointer to the VMCPU.
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264 | * @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
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265 | * instruction and prefix the log output with this text.
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266 | * @param rcGC GC return code
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267 | */
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268 | DECLINLINE(int) emR3ExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
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269 | {
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270 | #ifdef LOG_ENABLED
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271 | return emR3ExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
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272 | #else
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273 | return emR3ExecuteInstructionWorker(pVM, pVCpu, rcGC);
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274 | #endif
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275 | }
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276 |
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277 | /**
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278 | * Executes one (or perhaps a few more) IO instruction(s).
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279 | *
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280 | * @returns VBox status code suitable for EM.
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281 | * @param pVM Pointer to the VM.
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282 | * @param pVCpu Pointer to the VMCPU.
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283 | */
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284 | static int emR3ExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
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285 | {
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286 | PCPUMCTX pCtx = pVCpu->em.s.pCtx;
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287 |
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288 | STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
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289 |
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290 | /* Try to restart the io instruction that was refused in ring-0. */
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291 | VBOXSTRICTRC rcStrict = HMR3RestartPendingIOInstr(pVM, pVCpu, pCtx);
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292 | if (IOM_SUCCESS(rcStrict))
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293 | {
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294 | STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoRestarted);
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295 | STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
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296 | return VBOXSTRICTRC_TODO(rcStrict); /* rip already updated. */
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297 | }
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298 | AssertMsgReturn(rcStrict == VERR_NOT_FOUND, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
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299 | RT_SUCCESS_NP(rcStrict) ? VERR_IPE_UNEXPECTED_INFO_STATUS : VBOXSTRICTRC_TODO(rcStrict));
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300 |
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301 | /** @todo probably we should fall back to the recompiler; otherwise we'll go back and forth between HC & GC
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302 | * as io instructions tend to come in packages of more than one
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303 | */
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304 | DISCPUSTATE Cpu;
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305 | int rc2 = CPUMR3DisasmInstrCPU(pVM, pVCpu, pCtx, pCtx->rip, &Cpu, "IO EMU");
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306 | if (RT_SUCCESS(rc2))
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307 | {
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308 | rcStrict = VINF_EM_RAW_EMULATE_INSTR;
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309 |
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310 | if (!(Cpu.fPrefix & (DISPREFIX_REP | DISPREFIX_REPNE)))
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311 | {
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312 | switch (Cpu.pCurInstr->uOpcode)
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313 | {
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314 | case OP_IN:
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315 | {
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316 | STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIn);
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317 | rcStrict = IOMInterpretIN(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
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318 | break;
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319 | }
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320 |
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321 | case OP_OUT:
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322 | {
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323 | STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatOut);
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324 | rcStrict = IOMInterpretOUT(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
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325 | break;
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326 | }
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327 | }
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328 | }
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329 | else if (Cpu.fPrefix & DISPREFIX_REP)
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330 | {
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331 | switch (Cpu.pCurInstr->uOpcode)
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332 | {
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333 | case OP_INSB:
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334 | case OP_INSWD:
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335 | {
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336 | STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIn);
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337 | rcStrict = IOMInterpretINS(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
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338 | break;
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339 | }
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340 |
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341 | case OP_OUTSB:
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342 | case OP_OUTSWD:
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343 | {
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344 | STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatOut);
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345 | rcStrict = IOMInterpretOUTS(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
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346 | break;
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347 | }
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348 | }
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349 | }
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350 |
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351 | /*
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352 | * Handled the I/O return codes.
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353 | * (The unhandled cases end up with rcStrict == VINF_EM_RAW_EMULATE_INSTR.)
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354 | */
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355 | if (IOM_SUCCESS(rcStrict))
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356 | {
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357 | pCtx->rip += Cpu.cbInstr;
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358 | STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
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359 | return VBOXSTRICTRC_TODO(rcStrict);
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360 | }
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361 |
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362 | if (rcStrict == VINF_EM_RAW_GUEST_TRAP)
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363 | {
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364 | /* The active trap will be dispatched. */
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365 | Assert(TRPMHasTrap(pVCpu));
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366 | STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
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367 | return VINF_SUCCESS;
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368 | }
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369 | AssertMsg(rcStrict != VINF_TRPM_XCPT_DISPATCHED, ("Handle VINF_TRPM_XCPT_DISPATCHED\n"));
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370 |
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371 | if (RT_FAILURE(rcStrict))
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372 | {
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373 | STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
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374 | return VBOXSTRICTRC_TODO(rcStrict);
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375 | }
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376 | AssertMsg(rcStrict == VINF_EM_RAW_EMULATE_INSTR || rcStrict == VINF_EM_RESCHEDULE_REM, ("rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
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377 | }
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378 |
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379 | STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
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380 | return emR3ExecuteInstruction(pVM, pVCpu, "IO: ");
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381 | }
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382 |
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383 |
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384 | /**
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385 | * Process raw-mode specific forced actions.
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386 | *
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387 | * This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK is pending.
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388 | *
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389 | * @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
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390 | * EM statuses.
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391 | * @param pVM Pointer to the VM.
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392 | * @param pVCpu Pointer to the VMCPU.
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393 | * @param pCtx Pointer to the guest CPU context.
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394 | */
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395 | static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
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396 | {
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397 | /*
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398 | * Sync page directory.
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399 | */
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400 | if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
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401 | {
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402 | Assert(pVCpu->em.s.enmState != EMSTATE_WAIT_SIPI);
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403 | int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
|
---|
404 | if (RT_FAILURE(rc))
|
---|
405 | return rc;
|
---|
406 |
|
---|
407 | #ifdef VBOX_WITH_RAW_MODE
|
---|
408 | Assert(!VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT));
|
---|
409 | #endif
|
---|
410 |
|
---|
411 | /* Prefetch pages for EIP and ESP. */
|
---|
412 | /** @todo This is rather expensive. Should investigate if it really helps at all. */
|
---|
413 | rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_CS, CPUMCTX2CORE(pCtx), pCtx->rip));
|
---|
414 | if (rc == VINF_SUCCESS)
|
---|
415 | rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_SS, CPUMCTX2CORE(pCtx), pCtx->rsp));
|
---|
416 | if (rc != VINF_SUCCESS)
|
---|
417 | {
|
---|
418 | if (rc != VINF_PGM_SYNC_CR3)
|
---|
419 | {
|
---|
420 | AssertLogRelMsgReturn(RT_FAILURE(rc), ("%Rrc\n", rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
|
---|
421 | return rc;
|
---|
422 | }
|
---|
423 | rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
|
---|
424 | if (RT_FAILURE(rc))
|
---|
425 | return rc;
|
---|
426 | }
|
---|
427 | /** @todo maybe prefetch the supervisor stack page as well */
|
---|
428 | #ifdef VBOX_WITH_RAW_MODE
|
---|
429 | Assert(!VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT));
|
---|
430 | #endif
|
---|
431 | }
|
---|
432 |
|
---|
433 | /*
|
---|
434 | * Allocate handy pages (just in case the above actions have consumed some pages).
|
---|
435 | */
|
---|
436 | if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
|
---|
437 | {
|
---|
438 | int rc = PGMR3PhysAllocateHandyPages(pVM);
|
---|
439 | if (RT_FAILURE(rc))
|
---|
440 | return rc;
|
---|
441 | }
|
---|
442 |
|
---|
443 | /*
|
---|
444 | * Check whether we're out of memory now.
|
---|
445 | *
|
---|
446 | * This may stem from some of the above actions or operations that has been executed
|
---|
447 | * since we ran FFs. The allocate handy pages must for instance always be followed by
|
---|
448 | * this check.
|
---|
449 | */
|
---|
450 | if (VM_FF_ISPENDING(pVM, VM_FF_PGM_NO_MEMORY))
|
---|
451 | return VINF_EM_NO_MEMORY;
|
---|
452 |
|
---|
453 | return VINF_SUCCESS;
|
---|
454 | }
|
---|
455 |
|
---|
456 |
|
---|
457 | /**
|
---|
458 | * Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
|
---|
459 | *
|
---|
460 | * This function contains the raw-mode version of the inner
|
---|
461 | * execution loop (the outer loop being in EMR3ExecuteVM()).
|
---|
462 | *
|
---|
463 | * @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE, VINF_EM_RESCHEDULE_RAW,
|
---|
464 | * VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
|
---|
465 | *
|
---|
466 | * @param pVM Pointer to the VM.
|
---|
467 | * @param pVCpu Pointer to the VMCPU.
|
---|
468 | * @param pfFFDone Where to store an indicator telling whether or not
|
---|
469 | * FFs were done before returning.
|
---|
470 | */
|
---|
471 | int emR3HmExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
|
---|
472 | {
|
---|
473 | int rc = VERR_IPE_UNINITIALIZED_STATUS;
|
---|
474 | PCPUMCTX pCtx = pVCpu->em.s.pCtx;
|
---|
475 |
|
---|
476 | LogFlow(("emR3HmExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
|
---|
477 | *pfFFDone = false;
|
---|
478 |
|
---|
479 | STAM_COUNTER_INC(&pVCpu->em.s.StatHmExecuteEntry);
|
---|
480 |
|
---|
481 | #ifdef EM_NOTIFY_HM
|
---|
482 | HMR3NotifyScheduled(pVCpu);
|
---|
483 | #endif
|
---|
484 |
|
---|
485 | /*
|
---|
486 | * Spin till we get a forced action which returns anything but VINF_SUCCESS.
|
---|
487 | */
|
---|
488 | for (;;)
|
---|
489 | {
|
---|
490 | STAM_PROFILE_ADV_START(&pVCpu->em.s.StatHmEntry, a);
|
---|
491 |
|
---|
492 | /* Check if a forced reschedule is pending. */
|
---|
493 | if (HMR3IsRescheduleRequired(pVM, pCtx))
|
---|
494 | {
|
---|
495 | rc = VINF_EM_RESCHEDULE;
|
---|
496 | break;
|
---|
497 | }
|
---|
498 |
|
---|
499 | /*
|
---|
500 | * Process high priority pre-execution raw-mode FFs.
|
---|
501 | */
|
---|
502 | #ifdef VBOX_WITH_RAW_MODE
|
---|
503 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_TSS | VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT));
|
---|
504 | #endif
|
---|
505 | if ( VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
|
---|
506 | || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
|
---|
507 | {
|
---|
508 | rc = emR3HmForcedActions(pVM, pVCpu, pCtx);
|
---|
509 | if (rc != VINF_SUCCESS)
|
---|
510 | break;
|
---|
511 | }
|
---|
512 |
|
---|
513 | #ifdef LOG_ENABLED
|
---|
514 | /*
|
---|
515 | * Log important stuff before entering GC.
|
---|
516 | */
|
---|
517 | if (TRPMHasTrap(pVCpu))
|
---|
518 | Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
|
---|
519 |
|
---|
520 | uint32_t cpl = CPUMGetGuestCPL(pVCpu);
|
---|
521 |
|
---|
522 | if (pVM->cCpus == 1)
|
---|
523 | {
|
---|
524 | if (pCtx->eflags.Bits.u1VM)
|
---|
525 | Log(("HWV86: %08X IF=%d\n", pCtx->eip, pCtx->eflags.Bits.u1IF));
|
---|
526 | else if (CPUMIsGuestIn64BitCodeEx(pCtx))
|
---|
527 | Log(("HWR%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
|
---|
528 | else
|
---|
529 | Log(("HWR%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
|
---|
530 | }
|
---|
531 | else
|
---|
532 | {
|
---|
533 | if (pCtx->eflags.Bits.u1VM)
|
---|
534 | Log(("HWV86-CPU%d: %08X IF=%d\n", pVCpu->idCpu, pCtx->eip, pCtx->eflags.Bits.u1IF));
|
---|
535 | else if (CPUMIsGuestIn64BitCodeEx(pCtx))
|
---|
536 | Log(("HWR%d-CPU%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
|
---|
537 | else
|
---|
538 | Log(("HWR%d-CPU%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
|
---|
539 | }
|
---|
540 | #endif /* LOG_ENABLED */
|
---|
541 |
|
---|
542 | /*
|
---|
543 | * Execute the code.
|
---|
544 | */
|
---|
545 | STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatHmEntry, a);
|
---|
546 |
|
---|
547 | if (RT_LIKELY(EMR3IsExecutionAllowed(pVM, pVCpu)))
|
---|
548 | {
|
---|
549 | STAM_PROFILE_START(&pVCpu->em.s.StatHmExec, x);
|
---|
550 | rc = VMMR3HmRunGC(pVM, pVCpu);
|
---|
551 | STAM_PROFILE_STOP(&pVCpu->em.s.StatHmExec, x);
|
---|
552 | }
|
---|
553 | else
|
---|
554 | {
|
---|
555 | /* Give up this time slice; virtual time continues */
|
---|
556 | STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
|
---|
557 | RTThreadSleep(5);
|
---|
558 | STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
|
---|
559 | rc = VINF_SUCCESS;
|
---|
560 | }
|
---|
561 |
|
---|
562 |
|
---|
563 | /*
|
---|
564 | * Deal with high priority post execution FFs before doing anything else.
|
---|
565 | */
|
---|
566 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
|
---|
567 | if ( VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
|
---|
568 | || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
|
---|
569 | rc = emR3HighPriorityPostForcedActions(pVM, pVCpu, rc);
|
---|
570 |
|
---|
571 | /*
|
---|
572 | * Process the returned status code.
|
---|
573 | */
|
---|
574 | if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
|
---|
575 | break;
|
---|
576 |
|
---|
577 | rc = emR3HmHandleRC(pVM, pVCpu, pCtx, rc);
|
---|
578 | if (rc != VINF_SUCCESS)
|
---|
579 | break;
|
---|
580 |
|
---|
581 | /*
|
---|
582 | * Check and execute forced actions.
|
---|
583 | */
|
---|
584 | #ifdef VBOX_HIGH_RES_TIMERS_HACK
|
---|
585 | TMTimerPollVoid(pVM, pVCpu);
|
---|
586 | #endif
|
---|
587 | if ( VM_FF_ISPENDING(pVM, VM_FF_ALL_MASK)
|
---|
588 | || VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_ALL_MASK))
|
---|
589 | {
|
---|
590 | rc = emR3ForcedActions(pVM, pVCpu, rc);
|
---|
591 | VBOXVMM_EM_FF_ALL_RET(pVCpu, rc);
|
---|
592 | if ( rc != VINF_SUCCESS
|
---|
593 | && rc != VINF_EM_RESCHEDULE_HM)
|
---|
594 | {
|
---|
595 | *pfFFDone = true;
|
---|
596 | break;
|
---|
597 | }
|
---|
598 | }
|
---|
599 | }
|
---|
600 |
|
---|
601 | /*
|
---|
602 | * Return to outer loop.
|
---|
603 | */
|
---|
604 | #if defined(LOG_ENABLED) && defined(DEBUG)
|
---|
605 | RTLogFlush(NULL);
|
---|
606 | #endif
|
---|
607 | return rc;
|
---|
608 | }
|
---|
609 |
|
---|