1 | ; $Id: PAEand32Bit.mac 21942 2009-08-03 14:39:00Z vboxsync $
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2 | ;; @file
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3 | ; VMM - World Switchers, template for PAE and 32-Bit.
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4 | ;
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5 |
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6 | ;
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7 | ; Copyright (C) 2006-2007 Sun Microsystems, Inc.
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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 | ; Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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18 | ; Clara, CA 95054 USA or visit http://www.sun.com if you need
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19 | ; additional information or have any questions.
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20 | ;
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21 |
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22 | ;%define DEBUG_STUFF 1
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23 |
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24 | ;*******************************************************************************
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25 | ;* Header Files *
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26 | ;*******************************************************************************
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27 | %include "VBox/asmdefs.mac"
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28 | %include "VBox/x86.mac"
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29 | %include "VBox/cpum.mac"
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30 | %include "VBox/stam.mac"
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31 | %include "VBox/vm.mac"
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32 | %include "CPUMInternal.mac"
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33 | %include "VMMSwitcher/VMMSwitcher.mac"
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34 |
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35 | %undef NEED_ID
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36 | %ifdef NEED_PAE_ON_32BIT_HOST
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37 | %define NEED_ID
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38 | %endif
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39 | %ifdef NEED_32BIT_ON_PAE_HOST
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40 | %define NEED_ID
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41 | %endif
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42 |
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43 |
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44 |
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45 | ;
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46 | ; Start the fixup records
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47 | ; We collect the fixups in the .data section as we go along
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48 | ; It is therefore VITAL that no-one is using the .data section
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49 | ; for anything else between 'Start' and 'End'.
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50 | ;
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51 | BEGINDATA
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52 | GLOBALNAME Fixups
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53 |
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54 |
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55 |
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56 | BEGINCODE
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57 | GLOBALNAME Start
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58 |
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59 | ;;
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60 | ; The C interface.
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61 | ;
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62 | BEGINPROC vmmR0HostToGuest
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63 |
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64 | %ifdef DEBUG_STUFF
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65 | COM_S_NEWLINE
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66 | COM_S_CHAR '^'
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67 | %endif
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68 |
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69 | %ifdef VBOX_WITH_STATISTICS
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70 | ;
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71 | ; Switcher stats.
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72 | ;
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73 | FIXUP FIX_HC_VM_OFF, 1, VM.StatSwitcherToGC
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74 | mov edx, 0ffffffffh
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75 | STAM_PROFILE_ADV_START edx
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76 | %endif
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77 |
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78 | ;
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79 | ; Call worker.
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80 | ;
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81 | FIXUP FIX_HC_CPUM_OFF, 1, 0
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82 | mov edx, 0ffffffffh
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83 | push cs ; allow for far return and restore cs correctly.
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84 | call NAME(vmmR0HostToGuestAsm)
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85 |
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86 | %ifdef VBOX_WITH_STATISTICS
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87 | ;
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88 | ; Switcher stats.
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89 | ;
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90 | FIXUP FIX_HC_VM_OFF, 1, VM.StatSwitcherToHC
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91 | mov edx, 0ffffffffh
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92 | STAM_PROFILE_ADV_STOP edx
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93 | %endif
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94 |
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95 | ret
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96 | ENDPROC vmmR0HostToGuest
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97 |
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98 |
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99 |
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100 | ; *****************************************************************************
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101 | ; vmmR0HostToGuestAsm
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102 | ;
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103 | ; Phase one of the switch from host to guest context (host MMU context)
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104 | ;
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105 | ; INPUT:
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106 | ; - edx virtual address of CPUM structure (valid in host context)
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107 | ;
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108 | ; USES/DESTROYS:
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109 | ; - eax, ecx, edx
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110 | ;
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111 | ; ASSUMPTION:
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112 | ; - current CS and DS selectors are wide open
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113 | ;
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114 | ; *****************************************************************************
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115 | ALIGNCODE(16)
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116 | BEGINPROC vmmR0HostToGuestAsm
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117 | ;;
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118 | ;; Save CPU host context
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119 | ;; Skip eax, edx and ecx as these are not preserved over calls.
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120 | ;;
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121 | CPUMCPU_FROM_CPUM(edx)
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122 | ; general registers.
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123 | mov [edx + CPUMCPU.Host.ebx], ebx
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124 | mov [edx + CPUMCPU.Host.edi], edi
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125 | mov [edx + CPUMCPU.Host.esi], esi
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126 | mov [edx + CPUMCPU.Host.esp], esp
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127 | mov [edx + CPUMCPU.Host.ebp], ebp
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128 | ; selectors.
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129 | mov [edx + CPUMCPU.Host.ds], ds
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130 | mov [edx + CPUMCPU.Host.es], es
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131 | mov [edx + CPUMCPU.Host.fs], fs
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132 | mov [edx + CPUMCPU.Host.gs], gs
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133 | mov [edx + CPUMCPU.Host.ss], ss
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134 | ; special registers.
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135 | sldt [edx + CPUMCPU.Host.ldtr]
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136 | sidt [edx + CPUMCPU.Host.idtr]
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137 | sgdt [edx + CPUMCPU.Host.gdtr]
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138 | str [edx + CPUMCPU.Host.tr]
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139 | ; flags
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140 | pushfd
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141 | pop dword [edx + CPUMCPU.Host.eflags]
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142 |
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143 | FIXUP FIX_NO_SYSENTER_JMP, 0, htg_no_sysenter - NAME(Start) ; this will insert a jmp htg_no_sysenter if host doesn't use sysenter.
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144 | ; save MSR_IA32_SYSENTER_CS register.
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145 | mov ecx, MSR_IA32_SYSENTER_CS
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146 | mov ebx, edx ; save edx
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147 | rdmsr ; edx:eax <- MSR[ecx]
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148 | mov [ebx + CPUMCPU.Host.SysEnter.cs], eax
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149 | mov [ebx + CPUMCPU.Host.SysEnter.cs + 4], edx
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150 | xor eax, eax ; load 0:0 to cause #GP upon sysenter
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151 | xor edx, edx
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152 | wrmsr
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153 | xchg ebx, edx ; restore edx
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154 | jmp short htg_no_sysenter
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155 |
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156 | ALIGNCODE(16)
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157 | htg_no_sysenter:
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158 |
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159 | FIXUP FIX_NO_SYSCALL_JMP, 0, htg_no_syscall - NAME(Start) ; this will insert a jmp htg_no_syscall if host doesn't use syscall.
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160 | ; clear MSR_K6_EFER_SCE.
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161 | mov ebx, edx ; save edx
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162 | mov ecx, MSR_K6_EFER
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163 | rdmsr ; edx:eax <- MSR[ecx]
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164 | and eax, ~MSR_K6_EFER_SCE
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165 | wrmsr
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166 | mov edx, ebx ; restore edx
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167 | jmp short htg_no_syscall
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168 |
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169 | ALIGNCODE(16)
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170 | htg_no_syscall:
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171 |
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172 | ;; handle use flags.
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173 | mov esi, [edx + CPUMCPU.fUseFlags] ; esi == use flags.
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174 | and esi, ~CPUM_USED_FPU ; Clear CPUM_USED_* flags. ;;@todo FPU check can be optimized to use cr0 flags!
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175 | mov [edx + CPUMCPU.fUseFlags], esi
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176 |
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177 | ; debug registers.
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178 | test esi, CPUM_USE_DEBUG_REGS | CPUM_USE_DEBUG_REGS_HOST
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179 | jz htg_debug_regs_no
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180 | jmp htg_debug_regs_save_dr7and6
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181 | htg_debug_regs_no:
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182 |
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183 | ; control registers.
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184 | mov eax, cr0
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185 | mov [edx + CPUMCPU.Host.cr0], eax
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186 | ;mov eax, cr2 ; assume host os don't suff things in cr2. (safe)
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187 | ;mov [edx + CPUMCPU.Host.cr2], eax
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188 | mov eax, cr3
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189 | mov [edx + CPUMCPU.Host.cr3], eax
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190 | mov eax, cr4
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191 | mov [edx + CPUMCPU.Host.cr4], eax
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192 |
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193 | ;;
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194 | ;; Start switching to VMM context.
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195 | ;;
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196 |
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197 | ;
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198 | ; Change CR0 and CR4 so we can correctly emulate FPU/MMX/SSE[23] exceptions
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199 | ; Also disable WP. (eax==cr4 now)
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200 | ; Note! X86_CR4_PSE and X86_CR4_PAE are important if the host thinks so :-)
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201 | ; Note! X86_CR4_VMXE must not be touched in case the CPU is in vmx root mode
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202 | ;
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203 | and eax, X86_CR4_MCE | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_VMXE
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204 | mov ecx, [edx + CPUMCPU.Guest.cr4]
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205 | ;; @todo Switcher cleanup: Determin base CR4 during CPUMR0Init / VMMR3SelectSwitcher putting it
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206 | ; in CPUMCPU.Hyper.cr4 (which isn't currently being used). That should
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207 | ; simplify this operation a bit (and improve locality of the data).
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208 |
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209 | ;
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210 | ; CR4.AndMask and CR4.OrMask are set in CPUMR3Init based on the presence of
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211 | ; FXSAVE support on the host CPU
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212 | ;
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213 | CPUM_FROM_CPUMCPU(edx)
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214 | and ecx, [edx + CPUM.CR4.AndMask]
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215 | or eax, ecx
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216 | or eax, [edx + CPUM.CR4.OrMask]
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217 | mov cr4, eax
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218 |
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219 | CPUMCPU_FROM_CPUM(edx)
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220 | mov eax, [edx + CPUMCPU.Guest.cr0]
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221 | and eax, X86_CR0_EM
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222 | or eax, X86_CR0_PE | X86_CR0_PG | X86_CR0_TS | X86_CR0_ET | X86_CR0_NE | X86_CR0_MP
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223 | mov cr0, eax
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224 |
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225 | ; Load new gdt so we can do far jump to guest code after cr3 reload.
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226 | lgdt [edx + CPUMCPU.Hyper.gdtr]
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227 | DEBUG_CHAR('1') ; trashes esi
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228 |
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229 | ; Store the hypervisor cr3 for later loading
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230 | mov ebp, [edx + CPUMCPU.Hyper.cr3]
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231 |
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232 | ;;
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233 | ;; Load Intermediate memory context.
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234 | ;;
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235 | FIXUP SWITCHER_FIX_INTER_CR3_HC, 1
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236 | mov eax, 0ffffffffh
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237 | mov cr3, eax
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238 | DEBUG_CHAR('2') ; trashes esi
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239 |
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240 | %ifdef NEED_ID
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241 | ;;
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242 | ;; Jump to identity mapped location
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243 | ;;
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244 | FIXUP FIX_HC_2_ID_NEAR_REL, 1, NAME(IDEnterTarget) - NAME(Start)
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245 | jmp near NAME(IDEnterTarget)
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246 |
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247 | ; We're now on identity mapped pages!
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248 | ALIGNCODE(16)
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249 | GLOBALNAME IDEnterTarget
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250 | DEBUG_CHAR('3')
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251 | mov edx, cr4
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252 | %ifdef NEED_PAE_ON_32BIT_HOST
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253 | or edx, X86_CR4_PAE
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254 | %else
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255 | and edx, ~X86_CR4_PAE
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256 | %endif
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257 | mov eax, cr0
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258 | and eax, (~X86_CR0_PG) & 0xffffffff ; prevent yasm warning
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259 | mov cr0, eax
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260 | DEBUG_CHAR('4')
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261 | mov cr4, edx
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262 | FIXUP SWITCHER_FIX_INTER_CR3_GC, 1
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263 | mov edx, 0ffffffffh
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264 | mov cr3, edx
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265 | or eax, X86_CR0_PG
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266 | DEBUG_CHAR('5')
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267 | mov cr0, eax
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268 | DEBUG_CHAR('6')
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269 | %endif
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270 |
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271 | ;;
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272 | ;; Jump to guest code mapping of the code and load the Hypervisor CS.
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273 | ;;
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274 | FIXUP FIX_GC_FAR32, 1, NAME(FarJmpGCTarget) - NAME(Start)
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275 | jmp 0fff8h:0deadfaceh
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276 |
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277 |
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278 | ;;
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279 | ;; When we arrive at this label we're at the
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280 | ;; guest code mapping of the switching code.
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281 | ;;
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282 | ALIGNCODE(16)
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283 | GLOBALNAME FarJmpGCTarget
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284 | DEBUG_CHAR('-')
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285 | ; load final cr3 and do far jump to load cs.
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286 | mov cr3, ebp ; ebp set above
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287 | DEBUG_CHAR('0')
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288 |
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289 | ;;
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290 | ;; We're in VMM MMU context and VMM CS is loaded.
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291 | ;; Setup the rest of the VMM state.
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292 | ;;
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293 | FIXUP FIX_GC_CPUMCPU_OFF, 1, 0
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294 | mov edx, 0ffffffffh
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295 | ; Activate guest IDT
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296 | DEBUG_CHAR('1')
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297 | lidt [edx + CPUMCPU.Hyper.idtr]
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298 | ; Load selectors
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299 | DEBUG_CHAR('2')
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300 | FIXUP FIX_HYPER_DS, 1
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301 | mov eax, 0ffffh
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302 | mov ds, eax
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303 | mov es, eax
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304 | xor eax, eax
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305 | mov gs, eax
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306 | mov fs, eax
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307 |
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308 | ; Setup stack; use the lss_esp, ss pair for lss
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309 | DEBUG_CHAR('3')
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310 | mov eax, [edx + CPUMCPU.Hyper.esp]
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311 | mov [edx + CPUMCPU.Hyper.lss_esp], eax
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312 | lss esp, [edx + CPUMCPU.Hyper.lss_esp]
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313 |
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314 | ; Restore TSS selector; must mark it as not busy before using ltr (!)
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315 | DEBUG_CHAR('4')
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316 | FIXUP FIX_GC_TSS_GDTE_DW2, 2
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317 | and dword [0ffffffffh], ~0200h ; clear busy flag (2nd type2 bit)
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318 | DEBUG_CHAR('5')
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319 | ltr word [edx + CPUMCPU.Hyper.tr]
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320 | DEBUG_CHAR('6')
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321 |
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322 | ; Activate the ldt (now we can safely crash).
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323 | lldt [edx + CPUMCPU.Hyper.ldtr]
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324 | DEBUG_CHAR('7')
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325 |
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326 | ;; use flags.
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327 | mov esi, [edx + CPUMCPU.fUseFlags]
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328 |
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329 | ; debug registers
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330 | test esi, CPUM_USE_DEBUG_REGS
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331 | jz htg_debug_regs_guest_no
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332 | jmp htg_debug_regs_guest
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333 | htg_debug_regs_guest_no:
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334 | DEBUG_CHAR('9')
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335 |
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336 | %ifdef VBOX_WITH_NMI
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337 | ;
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338 | ; Setup K7 NMI.
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339 | ;
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340 | mov esi, edx
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341 | ; clear all PerfEvtSeln registers
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342 | xor eax, eax
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343 | xor edx, edx
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344 | mov ecx, MSR_K7_PERFCTR0
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345 | wrmsr
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346 | mov ecx, MSR_K7_PERFCTR1
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347 | wrmsr
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348 | mov ecx, MSR_K7_PERFCTR2
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349 | wrmsr
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350 | mov ecx, MSR_K7_PERFCTR3
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351 | wrmsr
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352 |
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353 | mov eax, RT_BIT(20) | RT_BIT(17) | RT_BIT(16) | 076h
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354 | mov ecx, MSR_K7_EVNTSEL0
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355 | wrmsr
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356 | mov eax, 02329B000h
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357 | mov edx, 0fffffffeh ; -1.6GHz * 5
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358 | mov ecx, MSR_K7_PERFCTR0
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359 | wrmsr
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360 |
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361 | FIXUP FIX_GC_APIC_BASE_32BIT, 1
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362 | mov eax, 0f0f0f0f0h
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363 | add eax, 0340h ; APIC_LVTPC
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364 | mov dword [eax], 0400h ; APIC_DM_NMI
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365 |
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366 | xor edx, edx
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367 | mov eax, RT_BIT(20) | RT_BIT(17) | RT_BIT(16) | 076h | RT_BIT(22) ;+EN
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368 | mov ecx, MSR_K7_EVNTSEL0
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369 | wrmsr
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370 |
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371 | mov edx, esi
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372 | %endif
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373 |
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374 | ; General registers.
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375 | mov ebx, [edx + CPUMCPU.Hyper.ebx]
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376 | mov ebp, [edx + CPUMCPU.Hyper.ebp]
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377 | mov esi, [edx + CPUMCPU.Hyper.esi]
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378 | mov edi, [edx + CPUMCPU.Hyper.edi]
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379 | push dword [edx + CPUMCPU.Hyper.eflags]
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380 | popfd
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381 | DEBUG_CHAR('!')
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382 |
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383 | ;;
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384 | ;; Return to the VMM code which either called the switcher or
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385 | ;; the code set up to run by HC.
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386 | ;;
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387 | %ifdef DEBUG_STUFF
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388 | COM_S_PRINT ';eip='
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389 | mov eax, [edx + CPUMCPU.Hyper.eip]
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390 | COM_S_DWORD_REG eax
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391 | COM_S_CHAR ';'
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392 | %endif
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393 | mov eax, [edx + CPUMCPU.Hyper.eip]
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394 | ; callees expect CPUM ptr
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395 | CPUM_FROM_CPUMCPU(edx)
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396 |
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397 | %ifdef VBOX_WITH_STATISTICS
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398 | FIXUP FIX_GC_VM_OFF, 1, VM.StatSwitcherToGC
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399 | mov edx, 0ffffffffh
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400 | STAM_PROFILE_ADV_STOP edx
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401 | FIXUP FIX_GC_CPUM_OFF, 1, 0
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402 | mov edx, 0ffffffffh
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403 | %endif
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404 | jmp eax
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405 |
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406 | ;;
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407 | ; Detour for saving the host DR7 and DR6.
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408 | ; esi and edx must be preserved.
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409 | htg_debug_regs_save_dr7and6:
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410 | DEBUG_S_CHAR('s');
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411 | mov eax, dr7 ; not sure, but if I read the docs right this will trap if GD is set. FIXME!!!
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412 | mov [edx + CPUMCPU.Host.dr7], eax
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413 | xor eax, eax ; clear everything. (bit 12? is read as 1...)
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414 | mov dr7, eax
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415 | mov eax, dr6 ; just in case we save the state register too.
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416 | mov [edx + CPUMCPU.Host.dr6], eax
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417 | jmp htg_debug_regs_no
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418 |
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419 | ;;
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420 | ; Detour for saving host DR0-3 and loading hypervisor debug registers.
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421 | ; esi and edx must be preserved.
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422 | htg_debug_regs_guest:
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423 | DEBUG_S_CHAR('D')
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424 | DEBUG_S_CHAR('R')
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425 | DEBUG_S_CHAR('x')
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426 | ; save host DR0-3.
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427 | mov eax, dr0
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428 | mov [edx + CPUMCPU.Host.dr0], eax
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429 | mov ebx, dr1
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430 | mov [edx + CPUMCPU.Host.dr1], ebx
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431 | mov ecx, dr2
|
---|
432 | mov [edx + CPUMCPU.Host.dr2], ecx
|
---|
433 | mov eax, dr3
|
---|
434 | mov [edx + CPUMCPU.Host.dr3], eax
|
---|
435 |
|
---|
436 | ; load hyper DR0-7
|
---|
437 | mov ebx, [edx + CPUMCPU.Hyper.dr]
|
---|
438 | mov dr0, ebx
|
---|
439 | mov ecx, [edx + CPUMCPU.Hyper.dr + 8*1]
|
---|
440 | mov dr1, ecx
|
---|
441 | mov eax, [edx + CPUMCPU.Hyper.dr + 8*2]
|
---|
442 | mov dr2, eax
|
---|
443 | mov ebx, [edx + CPUMCPU.Hyper.dr + 8*3]
|
---|
444 | mov dr3, ebx
|
---|
445 | ;mov eax, [edx + CPUMCPU.Hyper.dr + 8*6]
|
---|
446 | mov ecx, 0ffff0ff0h
|
---|
447 | mov dr6, ecx
|
---|
448 | mov eax, [edx + CPUMCPU.Hyper.dr + 8*7]
|
---|
449 | mov dr7, eax
|
---|
450 | jmp htg_debug_regs_guest_no
|
---|
451 |
|
---|
452 | ENDPROC vmmR0HostToGuestAsm
|
---|
453 |
|
---|
454 |
|
---|
455 | ;;
|
---|
456 | ; Trampoline for doing a call when starting the hyper visor execution.
|
---|
457 | ;
|
---|
458 | ; Push any arguments to the routine.
|
---|
459 | ; Push the argument frame size (cArg * 4).
|
---|
460 | ; Push the call target (_cdecl convention).
|
---|
461 | ; Push the address of this routine.
|
---|
462 | ;
|
---|
463 | ;
|
---|
464 | ALIGNCODE(16)
|
---|
465 | BEGINPROC vmmGCCallTrampoline
|
---|
466 | %ifdef DEBUG_STUFF
|
---|
467 | COM_S_CHAR 'c'
|
---|
468 | COM_S_CHAR 't'
|
---|
469 | COM_S_CHAR '!'
|
---|
470 | %endif
|
---|
471 |
|
---|
472 | ; call routine
|
---|
473 | pop eax ; call address
|
---|
474 | mov esi, edx ; save edx
|
---|
475 | pop edi ; argument count.
|
---|
476 | %ifdef DEBUG_STUFF
|
---|
477 | COM_S_PRINT ';eax='
|
---|
478 | COM_S_DWORD_REG eax
|
---|
479 | COM_S_CHAR ';'
|
---|
480 | %endif
|
---|
481 | call eax ; do call
|
---|
482 | add esp, edi ; cleanup stack
|
---|
483 |
|
---|
484 | ; return to the host context.
|
---|
485 | push byte 0 ; eip
|
---|
486 | mov edx, esi ; CPUM pointer
|
---|
487 |
|
---|
488 | %ifdef DEBUG_STUFF
|
---|
489 | COM_S_CHAR '`'
|
---|
490 | %endif
|
---|
491 | jmp NAME(VMMGCGuestToHostAsm) ; eax = returncode.
|
---|
492 | ENDPROC vmmGCCallTrampoline
|
---|
493 |
|
---|
494 |
|
---|
495 |
|
---|
496 | ;;
|
---|
497 | ; The C interface.
|
---|
498 | ;
|
---|
499 | ALIGNCODE(16)
|
---|
500 | BEGINPROC vmmGCGuestToHost
|
---|
501 | %ifdef DEBUG_STUFF
|
---|
502 | push esi
|
---|
503 | COM_NEWLINE
|
---|
504 | DEBUG_CHAR('b')
|
---|
505 | DEBUG_CHAR('a')
|
---|
506 | DEBUG_CHAR('c')
|
---|
507 | DEBUG_CHAR('k')
|
---|
508 | DEBUG_CHAR('!')
|
---|
509 | COM_NEWLINE
|
---|
510 | pop esi
|
---|
511 | %endif
|
---|
512 | mov eax, [esp + 4]
|
---|
513 | jmp NAME(VMMGCGuestToHostAsm)
|
---|
514 | ENDPROC vmmGCGuestToHost
|
---|
515 |
|
---|
516 |
|
---|
517 | ;;
|
---|
518 | ; VMMGCGuestToHostAsmGuestCtx
|
---|
519 | ;
|
---|
520 | ; Switches from Guest Context to Host Context.
|
---|
521 | ; Of course it's only called from within the GC.
|
---|
522 | ;
|
---|
523 | ; @param eax Return code.
|
---|
524 | ; @param esp + 4 Pointer to CPUMCTXCORE.
|
---|
525 | ;
|
---|
526 | ; @remark ASSUMES interrupts disabled.
|
---|
527 | ;
|
---|
528 | ALIGNCODE(16)
|
---|
529 | BEGINPROC VMMGCGuestToHostAsmGuestCtx
|
---|
530 | DEBUG_CHAR('~')
|
---|
531 |
|
---|
532 | %ifdef VBOX_WITH_STATISTICS
|
---|
533 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalInGC
|
---|
534 | mov edx, 0ffffffffh
|
---|
535 | STAM_PROFILE_ADV_STOP edx
|
---|
536 |
|
---|
537 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalGCToQemu
|
---|
538 | mov edx, 0ffffffffh
|
---|
539 | STAM_PROFILE_ADV_START edx
|
---|
540 |
|
---|
541 | FIXUP FIX_GC_VM_OFF, 1, VM.StatSwitcherToHC
|
---|
542 | mov edx, 0ffffffffh
|
---|
543 | STAM_PROFILE_ADV_START edx
|
---|
544 | %endif
|
---|
545 |
|
---|
546 | ;
|
---|
547 | ; Load the CPUMCPU pointer.
|
---|
548 | ;
|
---|
549 | FIXUP FIX_GC_CPUMCPU_OFF, 1, 0
|
---|
550 | mov edx, 0ffffffffh
|
---|
551 |
|
---|
552 | ; Skip return address (assumes called!)
|
---|
553 | lea esp, [esp + 4]
|
---|
554 |
|
---|
555 | ;
|
---|
556 | ; Guest Context (assumes esp now points to CPUMCTXCORE structure).
|
---|
557 | ;
|
---|
558 | ; general purpose registers.
|
---|
559 | push eax
|
---|
560 |
|
---|
561 | mov eax, [esp + 4 + CPUMCTXCORE.eax]
|
---|
562 | mov [edx + CPUMCPU.Guest.eax], eax
|
---|
563 | mov eax, [esp + 4 + CPUMCTXCORE.ecx]
|
---|
564 | mov [edx + CPUMCPU.Guest.ecx], eax
|
---|
565 | mov eax, [esp + 4 + CPUMCTXCORE.edx]
|
---|
566 | mov [edx + CPUMCPU.Guest.edx], eax
|
---|
567 | mov eax, [esp + 4 + CPUMCTXCORE.ebx]
|
---|
568 | mov [edx + CPUMCPU.Guest.ebx], eax
|
---|
569 | mov eax, [esp + 4 + CPUMCTXCORE.esp]
|
---|
570 | mov [edx + CPUMCPU.Guest.esp], eax
|
---|
571 | mov eax, [esp + 4 + CPUMCTXCORE.ebp]
|
---|
572 | mov [edx + CPUMCPU.Guest.ebp], eax
|
---|
573 | mov eax, [esp + 4 + CPUMCTXCORE.esi]
|
---|
574 | mov [edx + CPUMCPU.Guest.esi], eax
|
---|
575 | mov eax, [esp + 4 + CPUMCTXCORE.edi]
|
---|
576 | mov [edx + CPUMCPU.Guest.edi], eax
|
---|
577 | mov eax, dword [esp + 4 + CPUMCTXCORE.es]
|
---|
578 | mov dword [edx + CPUMCPU.Guest.es], eax
|
---|
579 | mov eax, dword [esp + 4 + CPUMCTXCORE.cs]
|
---|
580 | mov dword [edx + CPUMCPU.Guest.cs], eax
|
---|
581 | mov eax, dword [esp + 4 + CPUMCTXCORE.ss]
|
---|
582 | mov dword [edx + CPUMCPU.Guest.ss], eax
|
---|
583 | mov eax, dword [esp + 4 + CPUMCTXCORE.ds]
|
---|
584 | mov dword [edx + CPUMCPU.Guest.ds], eax
|
---|
585 | mov eax, dword [esp + 4 + CPUMCTXCORE.fs]
|
---|
586 | mov dword [edx + CPUMCPU.Guest.fs], eax
|
---|
587 | mov eax, dword [esp + 4 + CPUMCTXCORE.gs]
|
---|
588 | mov dword [edx + CPUMCPU.Guest.gs], eax
|
---|
589 | mov eax, [esp + 4 + CPUMCTXCORE.eflags]
|
---|
590 | mov dword [edx + CPUMCPU.Guest.eflags], eax
|
---|
591 | mov eax, [esp + 4 + CPUMCTXCORE.eip]
|
---|
592 | mov dword [edx + CPUMCPU.Guest.eip], eax
|
---|
593 | pop eax
|
---|
594 |
|
---|
595 | add esp, CPUMCTXCORE_size ; skip CPUMCTXCORE structure
|
---|
596 |
|
---|
597 | jmp vmmGCGuestToHostAsm_EIPDone
|
---|
598 | ENDPROC VMMGCGuestToHostAsmGuestCtx
|
---|
599 |
|
---|
600 |
|
---|
601 | ;;
|
---|
602 | ; VMMGCGuestToHostAsmHyperCtx
|
---|
603 | ;
|
---|
604 | ; This is an alternative entry point which we'll be using
|
---|
605 | ; when the we have the hypervisor context and need to save
|
---|
606 | ; that before going to the host.
|
---|
607 | ;
|
---|
608 | ; This is typically useful when abandoning the hypervisor
|
---|
609 | ; because of a trap and want the trap state to be saved.
|
---|
610 | ;
|
---|
611 | ; @param eax Return code.
|
---|
612 | ; @param ecx Points to CPUMCTXCORE.
|
---|
613 | ; @uses eax,edx,ecx
|
---|
614 | ALIGNCODE(16)
|
---|
615 | BEGINPROC VMMGCGuestToHostAsmHyperCtx
|
---|
616 | DEBUG_CHAR('#')
|
---|
617 |
|
---|
618 | %ifdef VBOX_WITH_STATISTICS
|
---|
619 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalInGC
|
---|
620 | mov edx, 0ffffffffh
|
---|
621 | STAM_PROFILE_ADV_STOP edx
|
---|
622 |
|
---|
623 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalGCToQemu
|
---|
624 | mov edx, 0ffffffffh
|
---|
625 | STAM_PROFILE_ADV_START edx
|
---|
626 |
|
---|
627 | FIXUP FIX_GC_VM_OFF, 1, VM.StatSwitcherToHC
|
---|
628 | mov edx, 0ffffffffh
|
---|
629 | STAM_PROFILE_ADV_START edx
|
---|
630 | %endif
|
---|
631 |
|
---|
632 | ;
|
---|
633 | ; Load the CPUM pointer.
|
---|
634 | ;
|
---|
635 | FIXUP FIX_GC_CPUMCPU_OFF, 1, 0
|
---|
636 | mov edx, 0ffffffffh
|
---|
637 |
|
---|
638 | push eax ; save return code.
|
---|
639 | ; general purpose registers
|
---|
640 | mov eax, [ecx + CPUMCTXCORE.edi]
|
---|
641 | mov [edx + CPUMCPU.Hyper.edi], eax
|
---|
642 | mov eax, [ecx + CPUMCTXCORE.esi]
|
---|
643 | mov [edx + CPUMCPU.Hyper.esi], eax
|
---|
644 | mov eax, [ecx + CPUMCTXCORE.ebp]
|
---|
645 | mov [edx + CPUMCPU.Hyper.ebp], eax
|
---|
646 | mov eax, [ecx + CPUMCTXCORE.eax]
|
---|
647 | mov [edx + CPUMCPU.Hyper.eax], eax
|
---|
648 | mov eax, [ecx + CPUMCTXCORE.ebx]
|
---|
649 | mov [edx + CPUMCPU.Hyper.ebx], eax
|
---|
650 | mov eax, [ecx + CPUMCTXCORE.edx]
|
---|
651 | mov [edx + CPUMCPU.Hyper.edx], eax
|
---|
652 | mov eax, [ecx + CPUMCTXCORE.ecx]
|
---|
653 | mov [edx + CPUMCPU.Hyper.ecx], eax
|
---|
654 | mov eax, [ecx + CPUMCTXCORE.esp]
|
---|
655 | mov [edx + CPUMCPU.Hyper.esp], eax
|
---|
656 | ; selectors
|
---|
657 | mov eax, [ecx + CPUMCTXCORE.ss]
|
---|
658 | mov [edx + CPUMCPU.Hyper.ss], eax
|
---|
659 | mov eax, [ecx + CPUMCTXCORE.gs]
|
---|
660 | mov [edx + CPUMCPU.Hyper.gs], eax
|
---|
661 | mov eax, [ecx + CPUMCTXCORE.fs]
|
---|
662 | mov [edx + CPUMCPU.Hyper.fs], eax
|
---|
663 | mov eax, [ecx + CPUMCTXCORE.es]
|
---|
664 | mov [edx + CPUMCPU.Hyper.es], eax
|
---|
665 | mov eax, [ecx + CPUMCTXCORE.ds]
|
---|
666 | mov [edx + CPUMCPU.Hyper.ds], eax
|
---|
667 | mov eax, [ecx + CPUMCTXCORE.cs]
|
---|
668 | mov [edx + CPUMCPU.Hyper.cs], eax
|
---|
669 | ; flags
|
---|
670 | mov eax, [ecx + CPUMCTXCORE.eflags]
|
---|
671 | mov [edx + CPUMCPU.Hyper.eflags], eax
|
---|
672 | ; eip
|
---|
673 | mov eax, [ecx + CPUMCTXCORE.eip]
|
---|
674 | mov [edx + CPUMCPU.Hyper.eip], eax
|
---|
675 | ; jump to common worker code.
|
---|
676 | pop eax ; restore return code.
|
---|
677 | jmp vmmGCGuestToHostAsm_SkipHyperRegs
|
---|
678 |
|
---|
679 | ENDPROC VMMGCGuestToHostAsmHyperCtx
|
---|
680 |
|
---|
681 |
|
---|
682 | ;;
|
---|
683 | ; VMMGCGuestToHostAsm
|
---|
684 | ;
|
---|
685 | ; This is an alternative entry point which we'll be using
|
---|
686 | ; when the we have saved the guest state already or we haven't
|
---|
687 | ; been messing with the guest at all.
|
---|
688 | ;
|
---|
689 | ; @param eax Return code.
|
---|
690 | ; @uses eax, edx, ecx (or it may use them in the future)
|
---|
691 | ;
|
---|
692 | ALIGNCODE(16)
|
---|
693 | BEGINPROC VMMGCGuestToHostAsm
|
---|
694 | DEBUG_CHAR('%')
|
---|
695 |
|
---|
696 | %ifdef VBOX_WITH_STATISTICS
|
---|
697 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalInGC
|
---|
698 | mov edx, 0ffffffffh
|
---|
699 | STAM_PROFILE_ADV_STOP edx
|
---|
700 |
|
---|
701 | FIXUP FIX_GC_VM_OFF, 1, VM.StatTotalGCToQemu
|
---|
702 | mov edx, 0ffffffffh
|
---|
703 | STAM_PROFILE_ADV_START edx
|
---|
704 |
|
---|
705 | FIXUP FIX_GC_VM_OFF, 1, VM.StatSwitcherToHC
|
---|
706 | mov edx, 0ffffffffh
|
---|
707 | STAM_PROFILE_ADV_START edx
|
---|
708 | %endif
|
---|
709 |
|
---|
710 | ;
|
---|
711 | ; Load the CPUMCPU pointer.
|
---|
712 | ;
|
---|
713 | FIXUP FIX_GC_CPUMCPU_OFF, 1, 0
|
---|
714 | mov edx, 0ffffffffh
|
---|
715 |
|
---|
716 | pop dword [edx + CPUMCPU.Hyper.eip] ; call return from stack
|
---|
717 | jmp short vmmGCGuestToHostAsm_EIPDone
|
---|
718 |
|
---|
719 | ALIGNCODE(16)
|
---|
720 | vmmGCGuestToHostAsm_EIPDone:
|
---|
721 | ; general registers which we care about.
|
---|
722 | mov dword [edx + CPUMCPU.Hyper.ebx], ebx
|
---|
723 | mov dword [edx + CPUMCPU.Hyper.esi], esi
|
---|
724 | mov dword [edx + CPUMCPU.Hyper.edi], edi
|
---|
725 | mov dword [edx + CPUMCPU.Hyper.ebp], ebp
|
---|
726 | mov dword [edx + CPUMCPU.Hyper.esp], esp
|
---|
727 |
|
---|
728 | ; special registers which may change.
|
---|
729 | vmmGCGuestToHostAsm_SkipHyperRegs:
|
---|
730 | ; str [edx + CPUMCPU.Hyper.tr] - double fault only, and it won't be right then either.
|
---|
731 | sldt [edx + CPUMCPU.Hyper.ldtr]
|
---|
732 |
|
---|
733 | ; No need to save CRx here. They are set dynamically according to Guest/Host requirements.
|
---|
734 | ; FPU context is saved before restore of host saving (another) branch.
|
---|
735 |
|
---|
736 | %ifdef VBOX_WITH_NMI
|
---|
737 | ;
|
---|
738 | ; Disarm K7 NMI.
|
---|
739 | ;
|
---|
740 | mov esi, edx
|
---|
741 | mov edi, eax
|
---|
742 |
|
---|
743 | xor edx, edx
|
---|
744 | xor eax, eax
|
---|
745 | mov ecx, MSR_K7_EVNTSEL0
|
---|
746 | wrmsr
|
---|
747 |
|
---|
748 | mov eax, edi
|
---|
749 | mov edx, esi
|
---|
750 | %endif
|
---|
751 |
|
---|
752 |
|
---|
753 | ;;
|
---|
754 | ;; Load Intermediate memory context.
|
---|
755 | ;;
|
---|
756 | mov edi, eax ; save return code in EDI (careful with COM_DWORD_REG from here on!)
|
---|
757 | mov ecx, [edx + CPUMCPU.Host.cr3]
|
---|
758 | FIXUP SWITCHER_FIX_INTER_CR3_GC, 1
|
---|
759 | mov eax, 0ffffffffh
|
---|
760 | mov cr3, eax
|
---|
761 | DEBUG_CHAR('?')
|
---|
762 |
|
---|
763 | ;; We're now in intermediate memory context!
|
---|
764 | %ifdef NEED_ID
|
---|
765 | ;;
|
---|
766 | ;; Jump to identity mapped location
|
---|
767 | ;;
|
---|
768 | FIXUP FIX_GC_2_ID_NEAR_REL, 1, NAME(IDExitTarget) - NAME(Start)
|
---|
769 | jmp near NAME(IDExitTarget)
|
---|
770 |
|
---|
771 | ; We're now on identity mapped pages!
|
---|
772 | ALIGNCODE(16)
|
---|
773 | GLOBALNAME IDExitTarget
|
---|
774 | DEBUG_CHAR('1')
|
---|
775 | mov edx, cr4
|
---|
776 | %ifdef NEED_PAE_ON_32BIT_HOST
|
---|
777 | and edx, ~X86_CR4_PAE
|
---|
778 | %else
|
---|
779 | or edx, X86_CR4_PAE
|
---|
780 | %endif
|
---|
781 | mov eax, cr0
|
---|
782 | and eax, (~X86_CR0_PG) & 0xffffffff ; prevent yasm warning
|
---|
783 | mov cr0, eax
|
---|
784 | DEBUG_CHAR('2')
|
---|
785 | mov cr4, edx
|
---|
786 | FIXUP SWITCHER_FIX_INTER_CR3_HC, 1
|
---|
787 | mov edx, 0ffffffffh
|
---|
788 | mov cr3, edx
|
---|
789 | or eax, X86_CR0_PG
|
---|
790 | DEBUG_CHAR('3')
|
---|
791 | mov cr0, eax
|
---|
792 | DEBUG_CHAR('4')
|
---|
793 |
|
---|
794 | ;;
|
---|
795 | ;; Jump to HC mapping.
|
---|
796 | ;;
|
---|
797 | FIXUP FIX_ID_2_HC_NEAR_REL, 1, NAME(HCExitTarget) - NAME(Start)
|
---|
798 | jmp near NAME(HCExitTarget)
|
---|
799 | %else
|
---|
800 | ;;
|
---|
801 | ;; Jump to HC mapping.
|
---|
802 | ;;
|
---|
803 | FIXUP FIX_GC_2_HC_NEAR_REL, 1, NAME(HCExitTarget) - NAME(Start)
|
---|
804 | jmp near NAME(HCExitTarget)
|
---|
805 | %endif
|
---|
806 |
|
---|
807 |
|
---|
808 | ;
|
---|
809 | ; When we arrive here we're at the host context
|
---|
810 | ; mapping of the switcher code.
|
---|
811 | ;
|
---|
812 | ALIGNCODE(16)
|
---|
813 | GLOBALNAME HCExitTarget
|
---|
814 | DEBUG_CHAR('9')
|
---|
815 | ; load final cr3
|
---|
816 | mov cr3, ecx
|
---|
817 | DEBUG_CHAR('@')
|
---|
818 |
|
---|
819 |
|
---|
820 | ;;
|
---|
821 | ;; Restore Host context.
|
---|
822 | ;;
|
---|
823 | ; Load CPUM pointer into edx
|
---|
824 | FIXUP FIX_HC_CPUM_OFF, 1, 0
|
---|
825 | mov edx, 0ffffffffh
|
---|
826 | CPUMCPU_FROM_CPUM(edx)
|
---|
827 | ; activate host gdt and idt
|
---|
828 | lgdt [edx + CPUMCPU.Host.gdtr]
|
---|
829 | DEBUG_CHAR('0')
|
---|
830 | lidt [edx + CPUMCPU.Host.idtr]
|
---|
831 | DEBUG_CHAR('1')
|
---|
832 | ; Restore TSS selector; must mark it as not busy before using ltr (!)
|
---|
833 | %if 1 ; ASSUME that this is supposed to be 'BUSY'. (saves 20-30 ticks on the T42p)
|
---|
834 | movzx eax, word [edx + CPUMCPU.Host.tr] ; eax <- TR
|
---|
835 | and al, 0F8h ; mask away TI and RPL bits, get descriptor offset.
|
---|
836 | add eax, [edx + CPUMCPU.Host.gdtr + 2] ; eax <- GDTR.address + descriptor offset.
|
---|
837 | and dword [eax + 4], ~0200h ; clear busy flag (2nd type2 bit)
|
---|
838 | ltr word [edx + CPUMCPU.Host.tr]
|
---|
839 | %else
|
---|
840 | movzx eax, word [edx + CPUMCPU.Host.tr] ; eax <- TR
|
---|
841 | and al, 0F8h ; mask away TI and RPL bits, get descriptor offset.
|
---|
842 | add eax, [edx + CPUMCPU.Host.gdtr + 2] ; eax <- GDTR.address + descriptor offset.
|
---|
843 | mov ecx, [eax + 4] ; ecx <- 2nd descriptor dword
|
---|
844 | mov ebx, ecx ; save orginal value
|
---|
845 | and ecx, ~0200h ; clear busy flag (2nd type2 bit)
|
---|
846 | mov [eax + 4], ecx ; not using xchg here is paranoia..
|
---|
847 | ltr word [edx + CPUMCPU.Host.tr]
|
---|
848 | xchg [eax + 4], ebx ; using xchg is paranoia too...
|
---|
849 | %endif
|
---|
850 | ; activate ldt
|
---|
851 | DEBUG_CHAR('2')
|
---|
852 | lldt [edx + CPUMCPU.Host.ldtr]
|
---|
853 | ; Restore segment registers
|
---|
854 | mov eax, [edx + CPUMCPU.Host.ds]
|
---|
855 | mov ds, eax
|
---|
856 | mov eax, [edx + CPUMCPU.Host.es]
|
---|
857 | mov es, eax
|
---|
858 | mov eax, [edx + CPUMCPU.Host.fs]
|
---|
859 | mov fs, eax
|
---|
860 | mov eax, [edx + CPUMCPU.Host.gs]
|
---|
861 | mov gs, eax
|
---|
862 | ; restore stack
|
---|
863 | lss esp, [edx + CPUMCPU.Host.esp]
|
---|
864 |
|
---|
865 |
|
---|
866 | FIXUP FIX_NO_SYSENTER_JMP, 0, gth_sysenter_no - NAME(Start) ; this will insert a jmp gth_sysenter_no if host doesn't use sysenter.
|
---|
867 | ; restore MSR_IA32_SYSENTER_CS register.
|
---|
868 | mov ecx, MSR_IA32_SYSENTER_CS
|
---|
869 | mov eax, [edx + CPUMCPU.Host.SysEnter.cs]
|
---|
870 | mov ebx, [edx + CPUMCPU.Host.SysEnter.cs + 4]
|
---|
871 | xchg edx, ebx ; save/load edx
|
---|
872 | wrmsr ; MSR[ecx] <- edx:eax
|
---|
873 | xchg edx, ebx ; restore edx
|
---|
874 | jmp short gth_sysenter_no
|
---|
875 |
|
---|
876 | ALIGNCODE(16)
|
---|
877 | gth_sysenter_no:
|
---|
878 |
|
---|
879 | FIXUP FIX_NO_SYSCALL_JMP, 0, gth_syscall_no - NAME(Start) ; this will insert a jmp gth_syscall_no if host doesn't use syscall.
|
---|
880 | ; set MSR_K6_EFER_SCE.
|
---|
881 | mov ebx, edx ; save edx
|
---|
882 | mov ecx, MSR_K6_EFER
|
---|
883 | rdmsr
|
---|
884 | or eax, MSR_K6_EFER_SCE
|
---|
885 | wrmsr
|
---|
886 | mov edx, ebx ; restore edx
|
---|
887 | jmp short gth_syscall_no
|
---|
888 |
|
---|
889 | ALIGNCODE(16)
|
---|
890 | gth_syscall_no:
|
---|
891 |
|
---|
892 | ; Restore FPU if guest has used it.
|
---|
893 | ; Using fxrstor should ensure that we're not causing unwanted exception on the host.
|
---|
894 | mov esi, [edx + CPUMCPU.fUseFlags] ; esi == use flags.
|
---|
895 | test esi, CPUM_USED_FPU
|
---|
896 | jz near gth_fpu_no
|
---|
897 | mov ecx, cr0
|
---|
898 | and ecx, ~(X86_CR0_TS | X86_CR0_EM)
|
---|
899 | mov cr0, ecx
|
---|
900 |
|
---|
901 | FIXUP FIX_NO_FXSAVE_JMP, 0, gth_no_fxsave - NAME(Start) ; this will insert a jmp gth_no_fxsave if fxsave isn't supported.
|
---|
902 | fxsave [edx + CPUMCPU.Guest.fpu]
|
---|
903 | fxrstor [edx + CPUMCPU.Host.fpu]
|
---|
904 | jmp near gth_fpu_no
|
---|
905 |
|
---|
906 | gth_no_fxsave:
|
---|
907 | fnsave [edx + CPUMCPU.Guest.fpu]
|
---|
908 | mov eax, [edx + CPUMCPU.Host.fpu] ; control word
|
---|
909 | not eax ; 1 means exception ignored (6 LS bits)
|
---|
910 | and eax, byte 03Fh ; 6 LS bits only
|
---|
911 | test eax, [edx + CPUMCPU.Host.fpu + 4] ; status word
|
---|
912 | jz gth_no_exceptions_pending
|
---|
913 |
|
---|
914 | ; technically incorrect, but we certainly don't want any exceptions now!!
|
---|
915 | and dword [edx + CPUMCPU.Host.fpu + 4], ~03Fh
|
---|
916 |
|
---|
917 | gth_no_exceptions_pending:
|
---|
918 | frstor [edx + CPUMCPU.Host.fpu]
|
---|
919 | jmp short gth_fpu_no
|
---|
920 |
|
---|
921 | ALIGNCODE(16)
|
---|
922 | gth_fpu_no:
|
---|
923 |
|
---|
924 | ; Control registers.
|
---|
925 | ; Would've liked to have these highere up in case of crashes, but
|
---|
926 | ; the fpu stuff must be done before we restore cr0.
|
---|
927 | mov ecx, [edx + CPUMCPU.Host.cr4]
|
---|
928 | mov cr4, ecx
|
---|
929 | mov ecx, [edx + CPUMCPU.Host.cr0]
|
---|
930 | mov cr0, ecx
|
---|
931 | ;mov ecx, [edx + CPUMCPU.Host.cr2] ; assumes this is waste of time.
|
---|
932 | ;mov cr2, ecx
|
---|
933 |
|
---|
934 | ; restore debug registers (if modified) (esi must still be fUseFlags!)
|
---|
935 | ; (must be done after cr4 reload because of the debug extension.)
|
---|
936 | test esi, CPUM_USE_DEBUG_REGS | CPUM_USE_DEBUG_REGS_HOST
|
---|
937 | jz short gth_debug_regs_no
|
---|
938 | jmp gth_debug_regs_restore
|
---|
939 | gth_debug_regs_no:
|
---|
940 |
|
---|
941 | ; restore general registers.
|
---|
942 | mov eax, edi ; restore return code. eax = return code !!
|
---|
943 | mov edi, [edx + CPUMCPU.Host.edi]
|
---|
944 | mov esi, [edx + CPUMCPU.Host.esi]
|
---|
945 | mov ebx, [edx + CPUMCPU.Host.ebx]
|
---|
946 | mov ebp, [edx + CPUMCPU.Host.ebp]
|
---|
947 | push dword [edx + CPUMCPU.Host.eflags]
|
---|
948 | popfd
|
---|
949 |
|
---|
950 | %ifdef DEBUG_STUFF
|
---|
951 | ; COM_S_CHAR '4'
|
---|
952 | %endif
|
---|
953 | retf
|
---|
954 |
|
---|
955 | ;;
|
---|
956 | ; Detour for restoring the host debug registers.
|
---|
957 | ; edx and edi must be preserved.
|
---|
958 | gth_debug_regs_restore:
|
---|
959 | DEBUG_S_CHAR('d')
|
---|
960 | xor eax, eax
|
---|
961 | mov dr7, eax ; paranoia or not?
|
---|
962 | test esi, CPUM_USE_DEBUG_REGS
|
---|
963 | jz short gth_debug_regs_dr7
|
---|
964 | DEBUG_S_CHAR('r')
|
---|
965 | mov eax, [edx + CPUMCPU.Host.dr0]
|
---|
966 | mov dr0, eax
|
---|
967 | mov ebx, [edx + CPUMCPU.Host.dr1]
|
---|
968 | mov dr1, ebx
|
---|
969 | mov ecx, [edx + CPUMCPU.Host.dr2]
|
---|
970 | mov dr2, ecx
|
---|
971 | mov eax, [edx + CPUMCPU.Host.dr3]
|
---|
972 | mov dr3, eax
|
---|
973 | gth_debug_regs_dr7:
|
---|
974 | mov ebx, [edx + CPUMCPU.Host.dr6]
|
---|
975 | mov dr6, ebx
|
---|
976 | mov ecx, [edx + CPUMCPU.Host.dr7]
|
---|
977 | mov dr7, ecx
|
---|
978 | jmp gth_debug_regs_no
|
---|
979 |
|
---|
980 | ENDPROC VMMGCGuestToHostAsm
|
---|
981 |
|
---|
982 |
|
---|
983 | GLOBALNAME End
|
---|
984 | ;
|
---|
985 | ; The description string (in the text section).
|
---|
986 | ;
|
---|
987 | NAME(Description):
|
---|
988 | db SWITCHER_DESCRIPTION
|
---|
989 | db 0
|
---|
990 |
|
---|
991 | extern NAME(Relocate)
|
---|
992 |
|
---|
993 | ;
|
---|
994 | ; End the fixup records.
|
---|
995 | ;
|
---|
996 | BEGINDATA
|
---|
997 | db FIX_THE_END ; final entry.
|
---|
998 | GLOBALNAME FixupsEnd
|
---|
999 |
|
---|
1000 | ;;
|
---|
1001 | ; The switcher definition structure.
|
---|
1002 | ALIGNDATA(16)
|
---|
1003 | GLOBALNAME Def
|
---|
1004 | istruc VMMSWITCHERDEF
|
---|
1005 | at VMMSWITCHERDEF.pvCode, RTCCPTR_DEF NAME(Start)
|
---|
1006 | at VMMSWITCHERDEF.pvFixups, RTCCPTR_DEF NAME(Fixups)
|
---|
1007 | at VMMSWITCHERDEF.pszDesc, RTCCPTR_DEF NAME(Description)
|
---|
1008 | at VMMSWITCHERDEF.pfnRelocate, RTCCPTR_DEF NAME(Relocate)
|
---|
1009 | at VMMSWITCHERDEF.enmType, dd SWITCHER_TYPE
|
---|
1010 | at VMMSWITCHERDEF.cbCode, dd NAME(End) - NAME(Start)
|
---|
1011 | at VMMSWITCHERDEF.offR0HostToGuest, dd NAME(vmmR0HostToGuest) - NAME(Start)
|
---|
1012 | at VMMSWITCHERDEF.offGCGuestToHost, dd NAME(vmmGCGuestToHost) - NAME(Start)
|
---|
1013 | at VMMSWITCHERDEF.offGCCallTrampoline, dd NAME(vmmGCCallTrampoline) - NAME(Start)
|
---|
1014 | at VMMSWITCHERDEF.offGCGuestToHostAsm, dd NAME(VMMGCGuestToHostAsm) - NAME(Start)
|
---|
1015 | at VMMSWITCHERDEF.offGCGuestToHostAsmHyperCtx, dd NAME(VMMGCGuestToHostAsmHyperCtx)- NAME(Start)
|
---|
1016 | at VMMSWITCHERDEF.offGCGuestToHostAsmGuestCtx, dd NAME(VMMGCGuestToHostAsmGuestCtx)- NAME(Start)
|
---|
1017 | ; disasm help
|
---|
1018 | at VMMSWITCHERDEF.offHCCode0, dd 0
|
---|
1019 | %ifdef NEED_ID
|
---|
1020 | at VMMSWITCHERDEF.cbHCCode0, dd NAME(IDEnterTarget) - NAME(Start)
|
---|
1021 | %else
|
---|
1022 | at VMMSWITCHERDEF.cbHCCode0, dd NAME(FarJmpGCTarget) - NAME(Start)
|
---|
1023 | %endif
|
---|
1024 | at VMMSWITCHERDEF.offHCCode1, dd NAME(HCExitTarget) - NAME(Start)
|
---|
1025 | at VMMSWITCHERDEF.cbHCCode1, dd NAME(End) - NAME(HCExitTarget)
|
---|
1026 | %ifdef NEED_ID
|
---|
1027 | at VMMSWITCHERDEF.offIDCode0, dd NAME(IDEnterTarget) - NAME(Start)
|
---|
1028 | at VMMSWITCHERDEF.cbIDCode0, dd NAME(FarJmpGCTarget) - NAME(IDEnterTarget)
|
---|
1029 | at VMMSWITCHERDEF.offIDCode1, dd NAME(IDExitTarget) - NAME(Start)
|
---|
1030 | at VMMSWITCHERDEF.cbIDCode1, dd NAME(HCExitTarget) - NAME(IDExitTarget)
|
---|
1031 | %else
|
---|
1032 | at VMMSWITCHERDEF.offIDCode0, dd 0
|
---|
1033 | at VMMSWITCHERDEF.cbIDCode0, dd 0
|
---|
1034 | at VMMSWITCHERDEF.offIDCode1, dd 0
|
---|
1035 | at VMMSWITCHERDEF.cbIDCode1, dd 0
|
---|
1036 | %endif
|
---|
1037 | at VMMSWITCHERDEF.offGCCode, dd NAME(FarJmpGCTarget) - NAME(Start)
|
---|
1038 | %ifdef NEED_ID
|
---|
1039 | at VMMSWITCHERDEF.cbGCCode, dd NAME(IDExitTarget) - NAME(FarJmpGCTarget)
|
---|
1040 | %else
|
---|
1041 | at VMMSWITCHERDEF.cbGCCode, dd NAME(HCExitTarget) - NAME(FarJmpGCTarget)
|
---|
1042 | %endif
|
---|
1043 |
|
---|
1044 | iend
|
---|
1045 |
|
---|