1 | /** @file
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2 | * HM - VMX Structures and Definitions. (VMM)
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3 | */
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4 |
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5 | /*
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6 | * Copyright (C) 2006-2020 Oracle Corporation
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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 (GPL) as published by the Free Software
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12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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15 | *
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16 | * The contents of this file may alternatively be used under the terms
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17 | * of the Common Development and Distribution License Version 1.0
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18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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19 | * VirtualBox OSE distribution, in which case the provisions of the
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20 | * CDDL are applicable instead of those of the GPL.
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21 | *
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22 | * You may elect to license modified versions of this file under the
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23 | * terms and conditions of either the GPL or the CDDL or both.
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24 | */
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25 |
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26 | #ifndef VBOX_INCLUDED_vmm_hmvmxinline_h
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27 | #define VBOX_INCLUDED_vmm_hmvmxinline_h
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28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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29 | # pragma once
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30 | #endif
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31 |
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32 | #include <VBox/vmm/hm_vmx.h>
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33 | #include <VBox/err.h>
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34 |
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35 | /* In Visual C++ versions prior to 2012, the vmx intrinsics are only available
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36 | when targeting AMD64. */
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37 | #if RT_INLINE_ASM_USES_INTRIN >= RT_MSC_VER_VS2010 && defined(RT_ARCH_AMD64)
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38 | # include <iprt/sanitized/intrin.h>
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39 | /* We always want them as intrinsics, no functions. */
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40 | # pragma intrinsic(__vmx_on)
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41 | # pragma intrinsic(__vmx_off)
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42 | # pragma intrinsic(__vmx_vmclear)
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43 | # pragma intrinsic(__vmx_vmptrld)
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44 | # pragma intrinsic(__vmx_vmread)
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45 | # pragma intrinsic(__vmx_vmwrite)
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46 | # define VMX_USE_MSC_INTRINSICS 1
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47 | #else
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48 | # define VMX_USE_MSC_INTRINSICS 0
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49 | #endif
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50 |
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51 | /* Skip checking VMREAD/VMWRITE failures on non-strict builds. */
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52 | #ifndef VBOX_STRICT
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53 | # define VBOX_WITH_VMREAD_VMWRITE_NOCHECK
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54 | #endif
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55 |
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56 |
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57 | /** @defgroup grp_hm_vmx_inline VMX Inline Helpers
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58 | * @ingroup grp_hm_vmx
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59 | * @{
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60 | */
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61 | /**
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62 | * Gets the effective width of a VMCS field given it's encoding adjusted for
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63 | * HIGH/FULL access for 64-bit fields.
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64 | *
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65 | * @returns The effective VMCS field width.
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66 | * @param uFieldEnc The VMCS field encoding.
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67 | *
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68 | * @remarks Warning! This function does not verify the encoding is for a valid and
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69 | * supported VMCS field.
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70 | */
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71 | DECLINLINE(uint8_t) VMXGetVmcsFieldWidthEff(uint32_t uFieldEnc)
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72 | {
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73 | /* Only the "HIGH" parts of all 64-bit fields have bit 0 set. */
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74 | if (uFieldEnc & RT_BIT(0))
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75 | return VMXVMCSFIELDWIDTH_32BIT;
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76 |
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77 | /* Bits 13:14 contains the width of the VMCS field, see VMXVMCSFIELDWIDTH_XXX. */
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78 | return (uFieldEnc >> 13) & 0x3;
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79 | }
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80 |
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81 |
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82 | /**
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83 | * Returns whether the given VMCS field is a read-only VMCS field or not.
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84 | *
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85 | * @returns @c true if it's a read-only field, @c false otherwise.
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86 | * @param uFieldEnc The VMCS field encoding.
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87 | *
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88 | * @remarks Warning! This function does not verify that the encoding is for a valid
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89 | * and/or supported VMCS field.
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90 | */
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91 | DECLINLINE(bool) VMXIsVmcsFieldReadOnly(uint32_t uFieldEnc)
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92 | {
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93 | /* See Intel spec. B.4.2 "Natural-Width Read-Only Data Fields". */
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94 | return (RT_BF_GET(uFieldEnc, VMX_BF_VMCSFIELD_TYPE) == VMXVMCSFIELDTYPE_VMEXIT_INFO);
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95 | }
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96 |
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97 |
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98 | /**
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99 | * Returns whether the given VM-entry interruption-information type is valid or not.
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100 | *
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101 | * @returns @c true if it's a valid type, @c false otherwise.
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102 | * @param fSupportsMTF Whether the Monitor-Trap Flag CPU feature is supported.
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103 | * @param uType The VM-entry interruption-information type.
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104 | */
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105 | DECLINLINE(bool) VMXIsEntryIntInfoTypeValid(bool fSupportsMTF, uint8_t uType)
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106 | {
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107 | /* See Intel spec. 26.2.1.3 "VM-Entry Control Fields". */
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108 | switch (uType)
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109 | {
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110 | case VMX_ENTRY_INT_INFO_TYPE_EXT_INT:
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111 | case VMX_ENTRY_INT_INFO_TYPE_NMI:
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112 | case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT:
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113 | case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
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114 | case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
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115 | case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT: return true;
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116 | case VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT: return fSupportsMTF;
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117 | default:
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118 | return false;
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119 | }
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120 | }
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121 |
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122 |
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123 | /**
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124 | * Returns whether the given VM-entry interruption-information vector and type
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125 | * combination is valid or not.
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126 | *
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127 | * @returns @c true if it's a valid vector/type combination, @c false otherwise.
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128 | * @param uVector The VM-entry interruption-information vector.
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129 | * @param uType The VM-entry interruption-information type.
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130 | *
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131 | * @remarks Warning! This function does not validate the type field individually.
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132 | * Use it after verifying type is valid using HMVmxIsEntryIntInfoTypeValid.
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133 | */
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134 | DECLINLINE(bool) VMXIsEntryIntInfoVectorValid(uint8_t uVector, uint8_t uType)
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135 | {
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136 | /* See Intel spec. 26.2.1.3 "VM-Entry Control Fields". */
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137 | if ( uType == VMX_ENTRY_INT_INFO_TYPE_NMI
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138 | && uVector != X86_XCPT_NMI)
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139 | return false;
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140 | if ( uType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
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141 | && uVector > X86_XCPT_LAST)
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142 | return false;
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143 | if ( uType == VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT
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144 | && uVector != VMX_ENTRY_INT_INFO_VECTOR_MTF)
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145 | return false;
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146 | return true;
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147 | }
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148 |
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149 |
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150 | /**
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151 | * Returns whether or not the VM-exit is trap-like or fault-like.
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152 | *
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153 | * @returns @c true if it's a trap-like VM-exit, @c false otherwise.
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154 | * @param uExitReason The VM-exit reason.
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155 | *
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156 | * @remarks Warning! This does not validate the VM-exit reason.
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157 | */
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158 | DECLINLINE(bool) VMXIsVmexitTrapLike(uint32_t uExitReason)
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159 | {
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160 | /*
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161 | * Trap-like VM-exits - The instruction causing the VM-exit completes before the
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162 | * VM-exit occurs.
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163 | *
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164 | * Fault-like VM-exits - The instruction causing the VM-exit is not completed before
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165 | * the VM-exit occurs.
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166 | *
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167 | * See Intel spec. 25.5.2 "Monitor Trap Flag".
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168 | * See Intel spec. 29.1.4 "EOI Virtualization".
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169 | * See Intel spec. 29.4.3.3 "APIC-Write VM Exits".
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170 | * See Intel spec. 29.1.2 "TPR Virtualization".
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171 | */
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172 | /** @todo NSTVMX: r=ramshankar: What about VM-exits due to debug traps (single-step,
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173 | * I/O breakpoints, data breakpoints), debug exceptions (data breakpoint)
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174 | * delayed by MovSS blocking, machine-check exceptions. */
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175 | switch (uExitReason)
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176 | {
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177 | case VMX_EXIT_MTF:
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178 | case VMX_EXIT_VIRTUALIZED_EOI:
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179 | case VMX_EXIT_APIC_WRITE:
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180 | case VMX_EXIT_TPR_BELOW_THRESHOLD:
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181 | return true;
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182 | }
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183 | return false;
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184 | }
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185 |
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186 |
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187 | /**
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188 | * Returns whether the VM-entry is vectoring or not given the VM-entry interruption
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189 | * information field.
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190 | *
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191 | * @returns @c true if the VM-entry is vectoring, @c false otherwise.
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192 | * @param uEntryIntInfo The VM-entry interruption information field.
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193 | * @param pEntryIntInfoType The VM-entry interruption information type field.
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194 | * Optional, can be NULL. Only updated when this
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195 | * function returns @c true.
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196 | */
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197 | DECLINLINE(bool) VMXIsVmentryVectoring(uint32_t uEntryIntInfo, uint8_t *pEntryIntInfoType)
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198 | {
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199 | /*
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200 | * The definition of what is a vectoring VM-entry is taken
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201 | * from Intel spec. 26.6 "Special Features of VM Entry".
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202 | */
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203 | if (!VMX_ENTRY_INT_INFO_IS_VALID(uEntryIntInfo))
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204 | return false;
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205 |
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206 | /* Scope and keep variable defines on top to satisy archaic c89 nonsense. */
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207 | {
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208 | uint8_t const uType = VMX_ENTRY_INT_INFO_TYPE(uEntryIntInfo);
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209 | switch (uType)
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210 | {
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211 | case VMX_ENTRY_INT_INFO_TYPE_EXT_INT:
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212 | case VMX_ENTRY_INT_INFO_TYPE_NMI:
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213 | case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT:
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214 | case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
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215 | case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
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216 | case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT:
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217 | {
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218 | if (pEntryIntInfoType)
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219 | *pEntryIntInfoType = uType;
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220 | return true;
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221 | }
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222 | }
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223 | }
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224 | return false;
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225 | }
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226 |
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227 |
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228 | /**
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229 | * Gets the description for a VMX abort reason.
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230 | *
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231 | * @returns The descriptive string.
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232 | * @param enmAbort The VMX abort reason.
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233 | */
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234 | DECLINLINE(const char *) VMXGetAbortDesc(VMXABORT enmAbort)
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235 | {
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236 | switch (enmAbort)
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237 | {
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238 | case VMXABORT_NONE: return "VMXABORT_NONE";
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239 | case VMXABORT_SAVE_GUEST_MSRS: return "VMXABORT_SAVE_GUEST_MSRS";
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240 | case VMXBOART_HOST_PDPTE: return "VMXBOART_HOST_PDPTE";
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241 | case VMXABORT_CURRENT_VMCS_CORRUPT: return "VMXABORT_CURRENT_VMCS_CORRUPT";
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242 | case VMXABORT_LOAD_HOST_MSR: return "VMXABORT_LOAD_HOST_MSR";
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243 | case VMXABORT_MACHINE_CHECK_XCPT: return "VMXABORT_MACHINE_CHECK_XCPT";
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244 | case VMXABORT_HOST_NOT_IN_LONG_MODE: return "VMXABORT_HOST_NOT_IN_LONG_MODE";
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245 | default:
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246 | break;
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247 | }
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248 | return "Unknown/invalid";
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249 | }
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250 |
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251 |
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252 | /**
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253 | * Gets the description for a virtual VMCS state.
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254 | *
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255 | * @returns The descriptive string.
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256 | * @param fVmcsState The virtual-VMCS state.
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257 | */
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258 | DECLINLINE(const char *) VMXGetVmcsStateDesc(uint8_t fVmcsState)
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259 | {
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260 | switch (fVmcsState)
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261 | {
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262 | case VMX_V_VMCS_LAUNCH_STATE_CLEAR: return "Clear";
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263 | case VMX_V_VMCS_LAUNCH_STATE_LAUNCHED: return "Launched";
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264 | default: return "Unknown";
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265 | }
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266 | }
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267 |
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268 |
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269 | /**
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270 | * Gets the description for a VM-entry interruption information event type.
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271 | *
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272 | * @returns The descriptive string.
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273 | * @param uType The event type.
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274 | */
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275 | DECLINLINE(const char *) VMXGetEntryIntInfoTypeDesc(uint8_t uType)
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276 | {
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277 | switch (uType)
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278 | {
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279 | case VMX_ENTRY_INT_INFO_TYPE_EXT_INT: return "External Interrupt";
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280 | case VMX_ENTRY_INT_INFO_TYPE_NMI: return "NMI";
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281 | case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT: return "Hardware Exception";
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282 | case VMX_ENTRY_INT_INFO_TYPE_SW_INT: return "Software Interrupt";
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283 | case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
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284 | case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT: return "Software Exception";
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285 | case VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT: return "Other Event";
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286 | default:
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287 | break;
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288 | }
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289 | return "Unknown/invalid";
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290 | }
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291 |
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292 |
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293 | /**
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294 | * Gets the description for a VM-exit interruption information event type.
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295 | *
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296 | * @returns The descriptive string.
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297 | * @param uType The event type.
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298 | */
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299 | DECLINLINE(const char *) VMXGetExitIntInfoTypeDesc(uint8_t uType)
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300 | {
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301 | switch (uType)
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302 | {
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303 | case VMX_EXIT_INT_INFO_TYPE_EXT_INT: return "External Interrupt";
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304 | case VMX_EXIT_INT_INFO_TYPE_NMI: return "NMI";
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305 | case VMX_EXIT_INT_INFO_TYPE_HW_XCPT: return "Hardware Exception";
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306 | case VMX_EXIT_INT_INFO_TYPE_SW_INT: return "Software Interrupt";
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307 | case VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
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308 | case VMX_EXIT_INT_INFO_TYPE_SW_XCPT: return "Software Exception";
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309 | default:
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310 | break;
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311 | }
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312 | return "Unknown/invalid";
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313 | }
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314 |
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315 |
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316 | /**
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317 | * Gets the description for an IDT-vectoring information event type.
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318 | *
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319 | * @returns The descriptive string.
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320 | * @param uType The event type.
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321 | */
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322 | DECLINLINE(const char *) VMXGetIdtVectoringInfoTypeDesc(uint8_t uType)
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323 | {
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324 | switch (uType)
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325 | {
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326 | case VMX_IDT_VECTORING_INFO_TYPE_EXT_INT: return "External Interrupt";
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327 | case VMX_IDT_VECTORING_INFO_TYPE_NMI: return "NMI";
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328 | case VMX_IDT_VECTORING_INFO_TYPE_HW_XCPT: return "Hardware Exception";
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329 | case VMX_IDT_VECTORING_INFO_TYPE_SW_INT: return "Software Interrupt";
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330 | case VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
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331 | case VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT: return "Software Exception";
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332 | default:
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333 | break;
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334 | }
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335 | return "Unknown/invalid";
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336 | }
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337 |
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338 |
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339 | /** @} */
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340 |
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341 |
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342 | /** @defgroup grp_hm_vmx_asm VMX Assembly Helpers
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343 | * @{
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344 | */
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345 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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346 |
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347 | /**
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348 | * Dispatches an NMI to the host.
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349 | */
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350 | DECLASM(int) VMXDispatchHostNmi(void);
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351 |
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352 |
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353 | /**
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354 | * Executes VMXON.
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355 | *
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356 | * @returns VBox status code.
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357 | * @param HCPhysVmxOn Physical address of VMXON structure.
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358 | */
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359 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
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360 | DECLASM(int) VMXEnable(RTHCPHYS HCPhysVmxOn);
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361 | #else
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362 | DECLINLINE(int) VMXEnable(RTHCPHYS HCPhysVmxOn)
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363 | {
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364 | # if VMX_USE_MSC_INTRINSICS
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365 | unsigned char rcMsc = __vmx_on(&HCPhysVmxOn);
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366 | if (RT_LIKELY(rcMsc == 0))
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367 | return VINF_SUCCESS;
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368 | return rcMsc == 2 ? VERR_VMX_INVALID_VMXON_PTR : VERR_VMX_VMXON_FAILED;
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369 |
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370 | # elif RT_INLINE_ASM_GNU_STYLE
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371 | # ifdef RT_ARCH_AMD64
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372 | int rc;
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373 | __asm__ __volatile__ (
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374 | "pushq %2 \n\t"
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375 | ".byte 0xf3, 0x0f, 0xc7, 0x34, 0x24 # VMXON [esp] \n\t"
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376 | "ja 2f \n\t"
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377 | "je 1f \n\t"
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378 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
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379 | "jmp 2f \n\t"
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380 | "1: \n\t"
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381 | "movl $" RT_XSTR(VERR_VMX_VMXON_FAILED)", %0 \n\t"
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382 | "2: \n\t"
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383 | "add $8, %%rsp \n\t"
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384 | :"=rm"(rc)
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385 | :"0"(VINF_SUCCESS),
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386 | "ir"(HCPhysVmxOn) /* don't allow direct memory reference here, */
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387 | /* this would not work with -fomit-frame-pointer */
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388 | :"memory"
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389 | );
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390 | return rc;
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391 | # else
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392 | int rc;
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393 | __asm__ __volatile__ (
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394 | "push %3 \n\t"
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395 | "push %2 \n\t"
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396 | ".byte 0xf3, 0x0f, 0xc7, 0x34, 0x24 # VMXON [esp] \n\t"
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397 | "ja 2f \n\t"
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398 | "je 1f \n\t"
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399 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
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400 | "jmp 2f \n\t"
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401 | "1: \n\t"
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402 | "movl $" RT_XSTR(VERR_VMX_VMXON_FAILED)", %0 \n\t"
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403 | "2: \n\t"
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404 | "add $8, %%esp \n\t"
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405 | :"=rm"(rc)
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406 | :"0"(VINF_SUCCESS),
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407 | "ir"((uint32_t)HCPhysVmxOn), /* don't allow direct memory reference here, */
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408 | "ir"((uint32_t)(HCPhysVmxOn >> 32)) /* this would not work with -fomit-frame-pointer */
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409 | :"memory"
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410 | );
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411 | return rc;
|
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412 | # endif
|
---|
413 |
|
---|
414 | # elif defined(RT_ARCH_X86)
|
---|
415 | int rc = VINF_SUCCESS;
|
---|
416 | __asm
|
---|
417 | {
|
---|
418 | push dword ptr [HCPhysVmxOn + 4]
|
---|
419 | push dword ptr [HCPhysVmxOn]
|
---|
420 | _emit 0xf3
|
---|
421 | _emit 0x0f
|
---|
422 | _emit 0xc7
|
---|
423 | _emit 0x34
|
---|
424 | _emit 0x24 /* VMXON [esp] */
|
---|
425 | jnc vmxon_good
|
---|
426 | mov dword ptr [rc], VERR_VMX_INVALID_VMXON_PTR
|
---|
427 | jmp the_end
|
---|
428 |
|
---|
429 | vmxon_good:
|
---|
430 | jnz the_end
|
---|
431 | mov dword ptr [rc], VERR_VMX_VMXON_FAILED
|
---|
432 | the_end:
|
---|
433 | add esp, 8
|
---|
434 | }
|
---|
435 | return rc;
|
---|
436 |
|
---|
437 | # else
|
---|
438 | # error "Shouldn't be here..."
|
---|
439 | # endif
|
---|
440 | }
|
---|
441 | #endif
|
---|
442 |
|
---|
443 |
|
---|
444 | /**
|
---|
445 | * Executes VMXOFF.
|
---|
446 | */
|
---|
447 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
|
---|
448 | DECLASM(void) VMXDisable(void);
|
---|
449 | #else
|
---|
450 | DECLINLINE(void) VMXDisable(void)
|
---|
451 | {
|
---|
452 | # if VMX_USE_MSC_INTRINSICS
|
---|
453 | __vmx_off();
|
---|
454 |
|
---|
455 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
456 | __asm__ __volatile__ (
|
---|
457 | ".byte 0x0f, 0x01, 0xc4 # VMXOFF \n\t"
|
---|
458 | );
|
---|
459 |
|
---|
460 | # elif defined(RT_ARCH_X86)
|
---|
461 | __asm
|
---|
462 | {
|
---|
463 | _emit 0x0f
|
---|
464 | _emit 0x01
|
---|
465 | _emit 0xc4 /* VMXOFF */
|
---|
466 | }
|
---|
467 |
|
---|
468 | # else
|
---|
469 | # error "Shouldn't be here..."
|
---|
470 | # endif
|
---|
471 | }
|
---|
472 | #endif
|
---|
473 |
|
---|
474 |
|
---|
475 | /**
|
---|
476 | * Executes VMCLEAR.
|
---|
477 | *
|
---|
478 | * @returns VBox status code.
|
---|
479 | * @param HCPhysVmcs Physical address of VM control structure.
|
---|
480 | */
|
---|
481 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
|
---|
482 | DECLASM(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs);
|
---|
483 | #else
|
---|
484 | DECLINLINE(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs)
|
---|
485 | {
|
---|
486 | # if VMX_USE_MSC_INTRINSICS
|
---|
487 | unsigned char rcMsc = __vmx_vmclear(&HCPhysVmcs);
|
---|
488 | if (RT_LIKELY(rcMsc == 0))
|
---|
489 | return VINF_SUCCESS;
|
---|
490 | return VERR_VMX_INVALID_VMCS_PTR;
|
---|
491 |
|
---|
492 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
493 | # ifdef RT_ARCH_AMD64
|
---|
494 | int rc;
|
---|
495 | __asm__ __volatile__ (
|
---|
496 | "pushq %2 \n\t"
|
---|
497 | ".byte 0x66, 0x0f, 0xc7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
|
---|
498 | "jnc 1f \n\t"
|
---|
499 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
500 | "1: \n\t"
|
---|
501 | "add $8, %%rsp \n\t"
|
---|
502 | :"=rm"(rc)
|
---|
503 | :"0"(VINF_SUCCESS),
|
---|
504 | "ir"(HCPhysVmcs) /* don't allow direct memory reference here, */
|
---|
505 | /* this would not work with -fomit-frame-pointer */
|
---|
506 | :"memory"
|
---|
507 | );
|
---|
508 | return rc;
|
---|
509 | # else
|
---|
510 | int rc;
|
---|
511 | __asm__ __volatile__ (
|
---|
512 | "push %3 \n\t"
|
---|
513 | "push %2 \n\t"
|
---|
514 | ".byte 0x66, 0x0f, 0xc7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
|
---|
515 | "jnc 1f \n\t"
|
---|
516 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
517 | "1: \n\t"
|
---|
518 | "add $8, %%esp \n\t"
|
---|
519 | :"=rm"(rc)
|
---|
520 | :"0"(VINF_SUCCESS),
|
---|
521 | "ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
|
---|
522 | "ir"((uint32_t)(HCPhysVmcs >> 32)) /* this would not work with -fomit-frame-pointer */
|
---|
523 | :"memory"
|
---|
524 | );
|
---|
525 | return rc;
|
---|
526 | # endif
|
---|
527 |
|
---|
528 | # elif defined(RT_ARCH_X86)
|
---|
529 | int rc = VINF_SUCCESS;
|
---|
530 | __asm
|
---|
531 | {
|
---|
532 | push dword ptr [HCPhysVmcs + 4]
|
---|
533 | push dword ptr [HCPhysVmcs]
|
---|
534 | _emit 0x66
|
---|
535 | _emit 0x0f
|
---|
536 | _emit 0xc7
|
---|
537 | _emit 0x34
|
---|
538 | _emit 0x24 /* VMCLEAR [esp] */
|
---|
539 | jnc success
|
---|
540 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
|
---|
541 | success:
|
---|
542 | add esp, 8
|
---|
543 | }
|
---|
544 | return rc;
|
---|
545 |
|
---|
546 | # else
|
---|
547 | # error "Shouldn't be here..."
|
---|
548 | # endif
|
---|
549 | }
|
---|
550 | #endif
|
---|
551 |
|
---|
552 |
|
---|
553 | /**
|
---|
554 | * Executes VMPTRLD.
|
---|
555 | *
|
---|
556 | * @returns VBox status code.
|
---|
557 | * @param HCPhysVmcs Physical address of VMCS structure.
|
---|
558 | */
|
---|
559 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
|
---|
560 | DECLASM(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs);
|
---|
561 | #else
|
---|
562 | DECLINLINE(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs)
|
---|
563 | {
|
---|
564 | # if VMX_USE_MSC_INTRINSICS
|
---|
565 | unsigned char rcMsc = __vmx_vmptrld(&HCPhysVmcs);
|
---|
566 | if (RT_LIKELY(rcMsc == 0))
|
---|
567 | return VINF_SUCCESS;
|
---|
568 | return VERR_VMX_INVALID_VMCS_PTR;
|
---|
569 |
|
---|
570 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
571 | # ifdef RT_ARCH_AMD64
|
---|
572 | int rc;
|
---|
573 | __asm__ __volatile__ (
|
---|
574 | "pushq %2 \n\t"
|
---|
575 | ".byte 0x0f, 0xc7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
|
---|
576 | "jnc 1f \n\t"
|
---|
577 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
578 | "1: \n\t"
|
---|
579 | "add $8, %%rsp \n\t"
|
---|
580 | :"=rm"(rc)
|
---|
581 | :"0"(VINF_SUCCESS),
|
---|
582 | "ir"(HCPhysVmcs) /* don't allow direct memory reference here, */
|
---|
583 | /* this will not work with -fomit-frame-pointer */
|
---|
584 | :"memory"
|
---|
585 | );
|
---|
586 | return rc;
|
---|
587 | # else
|
---|
588 | int rc;
|
---|
589 | __asm__ __volatile__ (
|
---|
590 | "push %3 \n\t"
|
---|
591 | "push %2 \n\t"
|
---|
592 | ".byte 0x0f, 0xc7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
|
---|
593 | "jnc 1f \n\t"
|
---|
594 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
595 | "1: \n\t"
|
---|
596 | "add $8, %%esp \n\t"
|
---|
597 | :"=rm"(rc)
|
---|
598 | :"0"(VINF_SUCCESS),
|
---|
599 | "ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
|
---|
600 | "ir"((uint32_t)(HCPhysVmcs >> 32)) /* this will not work with -fomit-frame-pointer */
|
---|
601 | :"memory"
|
---|
602 | );
|
---|
603 | return rc;
|
---|
604 | # endif
|
---|
605 |
|
---|
606 | # elif defined(RT_ARCH_X86)
|
---|
607 | int rc = VINF_SUCCESS;
|
---|
608 | __asm
|
---|
609 | {
|
---|
610 | push dword ptr [HCPhysVmcs + 4]
|
---|
611 | push dword ptr [HCPhysVmcs]
|
---|
612 | _emit 0x0f
|
---|
613 | _emit 0xc7
|
---|
614 | _emit 0x34
|
---|
615 | _emit 0x24 /* VMPTRLD [esp] */
|
---|
616 | jnc success
|
---|
617 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
|
---|
618 | success:
|
---|
619 | add esp, 8
|
---|
620 | }
|
---|
621 | return rc;
|
---|
622 |
|
---|
623 | # else
|
---|
624 | # error "Shouldn't be here..."
|
---|
625 | # endif
|
---|
626 | }
|
---|
627 | #endif
|
---|
628 |
|
---|
629 |
|
---|
630 | /**
|
---|
631 | * Executes VMPTRST.
|
---|
632 | *
|
---|
633 | * @returns VBox status code.
|
---|
634 | * @param pHCPhysVmcs Where to store the physical address of the current
|
---|
635 | * VMCS.
|
---|
636 | */
|
---|
637 | DECLASM(int) VMXGetCurrentVmcs(RTHCPHYS *pHCPhysVmcs);
|
---|
638 |
|
---|
639 |
|
---|
640 | /**
|
---|
641 | * Executes VMWRITE for a 32-bit field.
|
---|
642 | *
|
---|
643 | * @returns VBox status code.
|
---|
644 | * @retval VINF_SUCCESS.
|
---|
645 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
646 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
647 | *
|
---|
648 | * @param uFieldEnc VMCS field encoding.
|
---|
649 | * @param u32Val The 32-bit value to set.
|
---|
650 | *
|
---|
651 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
652 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
653 | */
|
---|
654 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
|
---|
655 | DECLASM(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val);
|
---|
656 | #else
|
---|
657 | DECLINLINE(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val)
|
---|
658 | {
|
---|
659 | # if VMX_USE_MSC_INTRINSICS
|
---|
660 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
661 | __vmx_vmwrite(uFieldEnc, u32Val);
|
---|
662 | return VINF_SUCCESS;
|
---|
663 | # else
|
---|
664 | unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u32Val);
|
---|
665 | if (RT_LIKELY(rcMsc == 0))
|
---|
666 | return VINF_SUCCESS;
|
---|
667 | return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
|
---|
668 | # endif
|
---|
669 |
|
---|
670 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
671 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
672 | __asm__ __volatile__ (
|
---|
673 | ".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
|
---|
674 | :
|
---|
675 | :"a"(uFieldEnc),
|
---|
676 | "d"(u32Val)
|
---|
677 | );
|
---|
678 | return VINF_SUCCESS;
|
---|
679 | # else
|
---|
680 | int rc;
|
---|
681 | __asm__ __volatile__ (
|
---|
682 | ".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
|
---|
683 | "ja 2f \n\t"
|
---|
684 | "je 1f \n\t"
|
---|
685 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
686 | "jmp 2f \n\t"
|
---|
687 | "1: \n\t"
|
---|
688 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
|
---|
689 | "2: \n\t"
|
---|
690 | :"=rm"(rc)
|
---|
691 | :"0"(VINF_SUCCESS),
|
---|
692 | "a"(uFieldEnc),
|
---|
693 | "d"(u32Val)
|
---|
694 | );
|
---|
695 | return rc;
|
---|
696 | # endif
|
---|
697 |
|
---|
698 | # elif defined(RT_ARCH_X86)
|
---|
699 | int rc = VINF_SUCCESS;
|
---|
700 | __asm
|
---|
701 | {
|
---|
702 | push dword ptr [u32Val]
|
---|
703 | mov eax, [uFieldEnc]
|
---|
704 | _emit 0x0f
|
---|
705 | _emit 0x79
|
---|
706 | _emit 0x04
|
---|
707 | _emit 0x24 /* VMWRITE eax, [esp] */
|
---|
708 | jnc valid_vmcs
|
---|
709 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
|
---|
710 | jmp the_end
|
---|
711 | valid_vmcs:
|
---|
712 | jnz the_end
|
---|
713 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
|
---|
714 | the_end:
|
---|
715 | add esp, 4
|
---|
716 | }
|
---|
717 | return rc;
|
---|
718 |
|
---|
719 | # else
|
---|
720 | # error "Shouldn't be here..."
|
---|
721 | # endif
|
---|
722 | }
|
---|
723 | #endif
|
---|
724 |
|
---|
725 |
|
---|
726 | /**
|
---|
727 | * Executes VMWRITE for a 64-bit field.
|
---|
728 | *
|
---|
729 | * @returns VBox status code.
|
---|
730 | * @retval VINF_SUCCESS.
|
---|
731 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
732 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
733 | *
|
---|
734 | * @param uFieldEnc The VMCS field encoding.
|
---|
735 | * @param u64Val The 16, 32 or 64-bit value to set.
|
---|
736 | *
|
---|
737 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
738 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
739 | */
|
---|
740 | #if defined(RT_ARCH_X86) || (RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS)
|
---|
741 | DECLASM(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val);
|
---|
742 | #else
|
---|
743 | DECLINLINE(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val)
|
---|
744 | {
|
---|
745 | # if VMX_USE_MSC_INTRINSICS
|
---|
746 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
747 | __vmx_vmwrite(uFieldEnc, u64Val);
|
---|
748 | return VINF_SUCCESS;
|
---|
749 | # else
|
---|
750 | unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u64Val);
|
---|
751 | if (RT_LIKELY(rcMsc == 0))
|
---|
752 | return VINF_SUCCESS;
|
---|
753 | return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
|
---|
754 | # endif
|
---|
755 |
|
---|
756 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
757 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
758 | __asm__ __volatile__ (
|
---|
759 | ".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
|
---|
760 | :
|
---|
761 | :"a"(uFieldEnc),
|
---|
762 | "d"(u64Val)
|
---|
763 | );
|
---|
764 | return VINF_SUCCESS;
|
---|
765 | # else
|
---|
766 | int rc;
|
---|
767 | __asm__ __volatile__ (
|
---|
768 | ".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
|
---|
769 | "ja 2f \n\t"
|
---|
770 | "je 1f \n\t"
|
---|
771 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
772 | "jmp 2f \n\t"
|
---|
773 | "1: \n\t"
|
---|
774 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
|
---|
775 | "2: \n\t"
|
---|
776 | :"=rm"(rc)
|
---|
777 | :"0"(VINF_SUCCESS),
|
---|
778 | "a"(uFieldEnc),
|
---|
779 | "d"(u64Val)
|
---|
780 | );
|
---|
781 | return rc;
|
---|
782 | # endif
|
---|
783 |
|
---|
784 | # else
|
---|
785 | # error "Shouldn't be here..."
|
---|
786 | # endif
|
---|
787 | }
|
---|
788 | #endif
|
---|
789 |
|
---|
790 |
|
---|
791 | /**
|
---|
792 | * Executes VMWRITE for a 16-bit VMCS field.
|
---|
793 | *
|
---|
794 | * @returns VBox status code.
|
---|
795 | * @retval VINF_SUCCESS.
|
---|
796 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
797 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
798 | *
|
---|
799 | * @param uVmcsField The VMCS field.
|
---|
800 | * @param u16Val The 16-bit value to set.
|
---|
801 | *
|
---|
802 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
803 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
804 | */
|
---|
805 | DECLINLINE(int) VMXWriteVmcs16(uint32_t uVmcsField, uint16_t u16Val)
|
---|
806 | {
|
---|
807 | AssertMsg(RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_WIDTH) == VMX_VMCSFIELD_WIDTH_16BIT, ("%#RX32\n", uVmcsField));
|
---|
808 | return VMXWriteVmcs32(uVmcsField, u16Val);
|
---|
809 | }
|
---|
810 |
|
---|
811 |
|
---|
812 | /**
|
---|
813 | * Executes VMWRITE for a natural-width VMCS field.
|
---|
814 | */
|
---|
815 | #ifdef RT_ARCH_AMD64
|
---|
816 | # define VMXWriteVmcsNw VMXWriteVmcs64
|
---|
817 | #else
|
---|
818 | # define VMXWriteVmcsNw VMXWriteVmcs32
|
---|
819 | #endif
|
---|
820 |
|
---|
821 |
|
---|
822 | /**
|
---|
823 | * Invalidate a page using INVEPT.
|
---|
824 | *
|
---|
825 | * @returns VBox status code.
|
---|
826 | * @param enmFlush Type of flush.
|
---|
827 | * @param pDescriptor Pointer to the descriptor.
|
---|
828 | */
|
---|
829 | DECLASM(int) VMXR0InvEPT(VMXTLBFLUSHEPT enmFlush, uint64_t *pDescriptor);
|
---|
830 |
|
---|
831 |
|
---|
832 | /**
|
---|
833 | * Invalidate a page using INVVPID.
|
---|
834 | *
|
---|
835 | * @returns VBox status code.
|
---|
836 | * @param enmFlush Type of flush.
|
---|
837 | * @param pDescriptor Pointer to the descriptor.
|
---|
838 | */
|
---|
839 | DECLASM(int) VMXR0InvVPID(VMXTLBFLUSHVPID enmFlush, uint64_t *pDescriptor);
|
---|
840 |
|
---|
841 |
|
---|
842 | /**
|
---|
843 | * Executes VMREAD for a 32-bit field.
|
---|
844 | *
|
---|
845 | * @returns VBox status code.
|
---|
846 | * @retval VINF_SUCCESS.
|
---|
847 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
848 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
849 | *
|
---|
850 | * @param uFieldEnc The VMCS field encoding.
|
---|
851 | * @param pData Where to store VMCS field value.
|
---|
852 | *
|
---|
853 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
854 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
855 | */
|
---|
856 | #if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
|
---|
857 | DECLASM(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData);
|
---|
858 | #else
|
---|
859 | DECLINLINE(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData)
|
---|
860 | {
|
---|
861 | # if VMX_USE_MSC_INTRINSICS
|
---|
862 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
863 | uint64_t u64Tmp = 0;
|
---|
864 | __vmx_vmread(uFieldEnc, &u64Tmp);
|
---|
865 | *pData = (uint32_t)u64Tmp;
|
---|
866 | return VINF_SUCCESS;
|
---|
867 | # else
|
---|
868 | unsigned char rcMsc;
|
---|
869 | uint64_t u64Tmp;
|
---|
870 | rcMsc = __vmx_vmread(uFieldEnc, &u64Tmp);
|
---|
871 | *pData = (uint32_t)u64Tmp;
|
---|
872 | if (RT_LIKELY(rcMsc == 0))
|
---|
873 | return VINF_SUCCESS;
|
---|
874 | return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
|
---|
875 | # endif
|
---|
876 |
|
---|
877 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
878 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
879 | __asm__ __volatile__ (
|
---|
880 | ".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
|
---|
881 | :"=d"(*pData)
|
---|
882 | :"a"(uFieldEnc),
|
---|
883 | "d"(0)
|
---|
884 | );
|
---|
885 | return VINF_SUCCESS;
|
---|
886 | # else
|
---|
887 | int rc;
|
---|
888 | __asm__ __volatile__ (
|
---|
889 | "movl $" RT_XSTR(VINF_SUCCESS)", %0 \n\t"
|
---|
890 | ".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
|
---|
891 | "ja 2f \n\t"
|
---|
892 | "je 1f \n\t"
|
---|
893 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
894 | "jmp 2f \n\t"
|
---|
895 | "1: \n\t"
|
---|
896 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
|
---|
897 | "2: \n\t"
|
---|
898 | :"=&r"(rc),
|
---|
899 | "=d"(*pData)
|
---|
900 | :"a"(uFieldEnc),
|
---|
901 | "d"(0)
|
---|
902 | );
|
---|
903 | return rc;
|
---|
904 | # endif
|
---|
905 |
|
---|
906 | # elif defined(RT_ARCH_X86)
|
---|
907 | int rc = VINF_SUCCESS;
|
---|
908 | __asm
|
---|
909 | {
|
---|
910 | sub esp, 4
|
---|
911 | mov dword ptr [esp], 0
|
---|
912 | mov eax, [uFieldEnc]
|
---|
913 | _emit 0x0f
|
---|
914 | _emit 0x78
|
---|
915 | _emit 0x04
|
---|
916 | _emit 0x24 /* VMREAD eax, [esp] */
|
---|
917 | mov edx, pData
|
---|
918 | pop dword ptr [edx]
|
---|
919 | jnc valid_vmcs
|
---|
920 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
|
---|
921 | jmp the_end
|
---|
922 | valid_vmcs:
|
---|
923 | jnz the_end
|
---|
924 | mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
|
---|
925 | the_end:
|
---|
926 | }
|
---|
927 | return rc;
|
---|
928 |
|
---|
929 | # else
|
---|
930 | # error "Shouldn't be here..."
|
---|
931 | # endif
|
---|
932 | }
|
---|
933 | #endif
|
---|
934 |
|
---|
935 |
|
---|
936 | /**
|
---|
937 | * Executes VMREAD for a 64-bit field.
|
---|
938 | *
|
---|
939 | * @returns VBox status code.
|
---|
940 | * @retval VINF_SUCCESS.
|
---|
941 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
942 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
943 | *
|
---|
944 | * @param uFieldEnc The VMCS field encoding.
|
---|
945 | * @param pData Where to store VMCS field value.
|
---|
946 | *
|
---|
947 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
948 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
949 | */
|
---|
950 | #if defined(RT_ARCH_X86) || (RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS)
|
---|
951 | DECLASM(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData);
|
---|
952 | #else
|
---|
953 | DECLINLINE(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData)
|
---|
954 | {
|
---|
955 | # if VMX_USE_MSC_INTRINSICS
|
---|
956 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
957 | __vmx_vmread(uFieldEnc, pData);
|
---|
958 | return VINF_SUCCESS;
|
---|
959 | # else
|
---|
960 | unsigned char rcMsc;
|
---|
961 | rcMsc = __vmx_vmread(uFieldEnc, pData);
|
---|
962 | if (RT_LIKELY(rcMsc == 0))
|
---|
963 | return VINF_SUCCESS;
|
---|
964 | return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
|
---|
965 | # endif
|
---|
966 |
|
---|
967 | # elif RT_INLINE_ASM_GNU_STYLE
|
---|
968 | # ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
|
---|
969 | __asm__ __volatile__ (
|
---|
970 | ".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
|
---|
971 | :"=d"(*pData)
|
---|
972 | :"a"(uFieldEnc),
|
---|
973 | "d"(0)
|
---|
974 | );
|
---|
975 | return VINF_SUCCESS;
|
---|
976 | # else
|
---|
977 | int rc;
|
---|
978 | __asm__ __volatile__ (
|
---|
979 | "movl $" RT_XSTR(VINF_SUCCESS)", %0 \n\t"
|
---|
980 | ".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
|
---|
981 | "ja 2f \n\t"
|
---|
982 | "je 1f \n\t"
|
---|
983 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
|
---|
984 | "jmp 2f \n\t"
|
---|
985 | "1: \n\t"
|
---|
986 | "movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
|
---|
987 | "2: \n\t"
|
---|
988 | :"=&r"(rc),
|
---|
989 | "=d"(*pData)
|
---|
990 | :"a"(uFieldEnc),
|
---|
991 | "d"(0)
|
---|
992 | );
|
---|
993 | return rc;
|
---|
994 | # endif
|
---|
995 | # else
|
---|
996 | # error "Shouldn't be here..."
|
---|
997 | # endif
|
---|
998 | }
|
---|
999 | #endif
|
---|
1000 |
|
---|
1001 |
|
---|
1002 | /**
|
---|
1003 | * Executes VMREAD for a 16-bit field.
|
---|
1004 | *
|
---|
1005 | * @returns VBox status code.
|
---|
1006 | * @retval VINF_SUCCESS.
|
---|
1007 | * @retval VERR_VMX_INVALID_VMCS_PTR.
|
---|
1008 | * @retval VERR_VMX_INVALID_VMCS_FIELD.
|
---|
1009 | *
|
---|
1010 | * @param uVmcsField The VMCS field.
|
---|
1011 | * @param pData Where to store VMCS field value.
|
---|
1012 | *
|
---|
1013 | * @remarks The values of the two status codes can be OR'ed together, the result
|
---|
1014 | * will be VERR_VMX_INVALID_VMCS_PTR.
|
---|
1015 | */
|
---|
1016 | DECLINLINE(int) VMXReadVmcs16(uint32_t uVmcsField, uint16_t *pData)
|
---|
1017 | {
|
---|
1018 | uint32_t u32Tmp;
|
---|
1019 | int rc;
|
---|
1020 | AssertMsg(RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_WIDTH) == VMX_VMCSFIELD_WIDTH_16BIT, ("%#RX32\n", uVmcsField));
|
---|
1021 | rc = VMXReadVmcs32(uVmcsField, &u32Tmp);
|
---|
1022 | *pData = (uint16_t)u32Tmp;
|
---|
1023 | return rc;
|
---|
1024 | }
|
---|
1025 |
|
---|
1026 |
|
---|
1027 | /**
|
---|
1028 | * Executes VMREAD for a natural-width VMCS field.
|
---|
1029 | */
|
---|
1030 | #ifdef RT_ARCH_AMD64
|
---|
1031 | # define VMXReadVmcsNw VMXReadVmcs64
|
---|
1032 | #else
|
---|
1033 | # define VMXReadVmcsNw VMXReadVmcs32
|
---|
1034 | #endif
|
---|
1035 |
|
---|
1036 | #endif /* RT_ARCH_AMD64 || RT_ARCH_X86 */
|
---|
1037 |
|
---|
1038 | /** @} */
|
---|
1039 |
|
---|
1040 | #endif /* !VBOX_INCLUDED_vmm_hmvmxinline_h */
|
---|
1041 |
|
---|