| 1 | ; $Id: HWACCMR0A.asm 12071 2008-09-03 16:05:46Z vboxsync $
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| 2 | ;; @file
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| 3 | ; VMXM - R0 vmx helpers
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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 | ;*******************************************************************************
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| 23 | ;* Header Files *
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| 24 | ;*******************************************************************************
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| 25 | %include "VBox/asmdefs.mac"
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| 26 | %include "VBox/err.mac"
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| 27 | %include "VBox/hwacc_vmx.mac"
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| 28 | %include "VBox/cpum.mac"
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| 29 | %include "VBox/x86.mac"
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| 30 |
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| 31 | %ifdef RT_OS_OS2 ;; @todo fix OMF support in yasm and kick nasm out completely.
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| 32 | %macro vmwrite 2,
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| 33 | int3
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| 34 | %endmacro
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| 35 | %define vmlaunch int3
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| 36 | %define vmresume int3
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| 37 | %define vmsave int3
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| 38 | %define vmload int3
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| 39 | %define vmrun int3
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| 40 | %define clgi int3
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| 41 | %define stgi int3
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| 42 | %macro invlpga 2,
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| 43 | int3
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| 44 | %endmacro
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| 45 | %endif
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| 46 |
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| 47 | ;; This is too risky wrt. stability, performance and correctness.
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| 48 | ;%define VBOX_WITH_DR6_EXPERIMENT 1
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| 49 |
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| 50 | ;; @def MYPUSHAD
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| 51 | ; Macro generating an equivalent to pushad
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| 52 |
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| 53 | ;; @def MYPOPAD
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| 54 | ; Macro generating an equivalent to popad
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| 55 |
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| 56 | ;; @def MYPUSHSEGS
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| 57 | ; Macro saving all segment registers on the stack.
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| 58 | ; @param 1 full width register name
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| 59 | ; @param 2 16-bit regsiter name for \a 1.
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| 60 |
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| 61 | ;; @def MYPOPSEGS
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| 62 | ; Macro restoring all segment registers on the stack
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| 63 | ; @param 1 full width register name
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| 64 | ; @param 2 16-bit regsiter name for \a 1.
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| 65 |
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| 66 | %ifdef RT_ARCH_AMD64
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| 67 | ; Save a host and load the corresponding guest MSR (trashes rdx & rcx)
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| 68 | %macro LOADGUESTMSR 2
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| 69 | mov rcx, %1
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| 70 | rdmsr
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| 71 | push rdx
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| 72 | push rax
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| 73 | mov edx, dword [xSI + %2 + 4]
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| 74 | mov eax, dword [xSI + %2]
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| 75 | wrmsr
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| 76 | %endmacro
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| 77 |
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| 78 | ; Save a guest and load the corresponding host MSR (trashes rdx & rcx)
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| 79 | ; Only really useful for gs kernel base as that one can be changed behind our back (swapgs)
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| 80 | %macro LOADHOSTMSREX 2
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| 81 | mov rcx, %1
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| 82 | rdmsr
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| 83 | mov dword [xSI + %2], eax
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| 84 | mov dword [xSI + %2 + 4], edx
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| 85 | pop rax
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| 86 | pop rdx
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| 87 | wrmsr
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| 88 | %endmacro
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| 89 |
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| 90 | ; Load the corresponding host MSR (trashes rdx & rcx)
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| 91 | %macro LOADHOSTMSR 1
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| 92 | mov rcx, %1
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| 93 | pop rax
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| 94 | pop rdx
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| 95 | wrmsr
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| 96 | %endmacro
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| 97 |
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| 98 | %ifdef ASM_CALL64_GCC
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| 99 | %macro MYPUSHAD 0
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| 100 | push r15
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| 101 | push r14
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| 102 | push r13
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| 103 | push r12
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| 104 | push rbx
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| 105 | %endmacro
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| 106 | %macro MYPOPAD 0
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| 107 | pop rbx
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| 108 | pop r12
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| 109 | pop r13
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| 110 | pop r14
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| 111 | pop r15
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| 112 | %endmacro
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| 113 |
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| 114 | %else ; ASM_CALL64_MSC
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| 115 | %macro MYPUSHAD 0
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| 116 | push r15
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| 117 | push r14
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| 118 | push r13
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| 119 | push r12
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| 120 | push rbx
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| 121 | push rsi
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| 122 | push rdi
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| 123 | %endmacro
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| 124 | %macro MYPOPAD 0
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| 125 | pop rdi
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| 126 | pop rsi
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| 127 | pop rbx
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| 128 | pop r12
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| 129 | pop r13
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| 130 | pop r14
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| 131 | pop r15
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| 132 | %endmacro
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| 133 | %endif
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| 134 |
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| 135 | ; trashes, rax, rdx & rcx
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| 136 | %macro MYPUSHSEGS 2
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| 137 | mov %2, es
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| 138 | push %1
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| 139 | mov %2, ds
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| 140 | push %1
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| 141 |
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| 142 | ; Special case for FS; Windows and Linux either don't use it or restore it when leaving kernel mode, Solaris OTOH doesn't and we must save it.
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| 143 | mov ecx, MSR_K8_FS_BASE
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| 144 | rdmsr
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| 145 | push rdx
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| 146 | push rax
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| 147 | push fs
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| 148 |
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| 149 | ; Special case for GS; OSes typically use swapgs to reset the hidden base register for GS on entry into the kernel. The same happens on exit
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| 150 | mov ecx, MSR_K8_GS_BASE
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| 151 | rdmsr
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| 152 | push rdx
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| 153 | push rax
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| 154 | push gs
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| 155 | %endmacro
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| 156 |
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| 157 | ; trashes, rax, rdx & rcx
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| 158 | %macro MYPOPSEGS 2
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| 159 | ; Note: do not step through this code with a debugger!
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| 160 | pop gs
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| 161 | pop rax
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| 162 | pop rdx
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| 163 | mov ecx, MSR_K8_GS_BASE
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| 164 | wrmsr
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| 165 |
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| 166 | pop fs
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| 167 | pop rax
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| 168 | pop rdx
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| 169 | mov ecx, MSR_K8_FS_BASE
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| 170 | wrmsr
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| 171 | ; Now it's safe to step again
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| 172 |
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| 173 | pop %1
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| 174 | mov ds, %2
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| 175 | pop %1
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| 176 | mov es, %2
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| 177 | %endmacro
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| 178 |
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| 179 | %else ; RT_ARCH_X86
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| 180 | %macro MYPUSHAD 0
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| 181 | pushad
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| 182 | %endmacro
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| 183 | %macro MYPOPAD 0
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| 184 | popad
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| 185 | %endmacro
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| 186 |
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| 187 | %macro MYPUSHSEGS 2
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| 188 | push ds
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| 189 | push es
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| 190 | push fs
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| 191 | push gs
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| 192 | %endmacro
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| 193 | %macro MYPOPSEGS 2
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| 194 | pop gs
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| 195 | pop fs
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| 196 | pop es
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| 197 | pop ds
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| 198 | %endmacro
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| 199 | %endif
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| 200 |
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| 201 |
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| 202 | BEGINCODE
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| 203 |
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| 204 | ;/**
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| 205 | ; * Prepares for and executes VMLAUNCH/VMRESUME (32 bits guest mode)
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| 206 | ; *
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| 207 | ; * @returns VBox status code
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| 208 | ; * @param fResume vmlauch/vmresume
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| 209 | ; * @param pCtx Guest context
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| 210 | ; */
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| 211 | BEGINPROC VMXR0StartVM32
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| 212 | push xBP
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| 213 | mov xBP, xSP
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| 214 |
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| 215 | pushf
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| 216 | cli
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| 217 |
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| 218 | ;/* First we have to save some final CPU context registers. */
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| 219 | %ifdef RT_ARCH_AMD64
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| 220 | mov rax, qword .vmlaunch_done
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| 221 | push rax
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| 222 | %else
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| 223 | push .vmlaunch_done
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| 224 | %endif
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| 225 | mov eax, VMX_VMCS_HOST_RIP ;/* return address (too difficult to continue after VMLAUNCH?) */
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| 226 | vmwrite xAX, [xSP]
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| 227 | ;/* Note: assumes success... */
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| 228 | add xSP, xS
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| 229 |
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| 230 | ;/* Manual save and restore:
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| 231 | ; * - General purpose registers except RIP, RSP
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| 232 | ; *
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| 233 | ; * Trashed:
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| 234 | ; * - CR2 (we don't care)
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| 235 | ; * - LDTR (reset to 0)
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| 236 | ; * - DRx (presumably not changed at all)
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| 237 | ; * - DR7 (reset to 0x400)
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| 238 | ; * - EFLAGS (reset to RT_BIT(1); not relevant)
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| 239 | ; *
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| 240 | ; */
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| 241 |
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| 242 | ;/* Save all general purpose host registers. */
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| 243 | MYPUSHAD
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| 244 |
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| 245 | ;/* Save the Guest CPU context pointer. */
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| 246 | %ifdef RT_ARCH_AMD64
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| 247 | %ifdef ASM_CALL64_GCC
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| 248 | ; fResume already in rdi
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| 249 | ; pCtx already in rsi
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| 250 | %else
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| 251 | mov rdi, rcx ; fResume
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| 252 | mov rsi, rdx ; pCtx
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| 253 | %endif
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| 254 | %else
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| 255 | mov edi, [ebp + 8] ; fResume
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| 256 | mov esi, [ebp + 12] ; pCtx
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| 257 | %endif
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| 258 |
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| 259 | ;/* Save segment registers */
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| 260 | ; Note: MYPUSHSEGS trashes rdx & rcx, so we moved it here (msvc amd64 case)
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| 261 | MYPUSHSEGS xAX, ax
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| 262 |
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| 263 | ; Save the pCtx pointer
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| 264 | push xSI
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| 265 |
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| 266 | ; Save LDTR
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| 267 | xor eax, eax
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| 268 | sldt ax
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| 269 | push xAX
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| 270 |
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| 271 | ; VMX only saves the base of the GDTR & IDTR and resets the limit to 0xffff; we must restore the limit correctly!
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| 272 | sub xSP, xS*2
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| 273 | sgdt [xSP]
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| 274 |
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| 275 | sub xSP, xS*2
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| 276 | sidt [xSP]
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| 277 |
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| 278 | %ifdef VBOX_WITH_DR6_EXPERIMENT
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| 279 | ; Restore DR6 - experiment, not safe!
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| 280 | mov xBX, [xSI + CPUMCTX.dr6]
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| 281 | mov dr6, xBX
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| 282 | %endif
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| 283 |
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| 284 | ; Restore CR2
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| 285 | mov ebx, [xSI + CPUMCTX.cr2]
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| 286 | mov cr2, xBX
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| 287 |
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| 288 | mov eax, VMX_VMCS_HOST_RSP
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| 289 | vmwrite xAX, xSP
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| 290 | ;/* Note: assumes success... */
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| 291 | ;/* Don't mess with ESP anymore!! */
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| 292 |
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| 293 | ;/* Restore Guest's general purpose registers. */
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| 294 | mov eax, [xSI + CPUMCTX.eax]
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| 295 | mov ebx, [xSI + CPUMCTX.ebx]
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| 296 | mov ecx, [xSI + CPUMCTX.ecx]
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| 297 | mov edx, [xSI + CPUMCTX.edx]
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| 298 | mov ebp, [xSI + CPUMCTX.ebp]
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| 299 |
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| 300 | ; resume or start?
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| 301 | cmp xDI, 0 ; fResume
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| 302 | je .vmlauch_lauch
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| 303 |
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| 304 | ;/* Restore edi & esi. */
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| 305 | mov edi, [xSI + CPUMCTX.edi]
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| 306 | mov esi, [xSI + CPUMCTX.esi]
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| 307 |
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| 308 | vmresume
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| 309 | jmp .vmlaunch_done; ;/* here if vmresume detected a failure. */
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| 310 |
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| 311 | .vmlauch_lauch:
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| 312 | ;/* Restore edi & esi. */
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| 313 | mov edi, [xSI + CPUMCTX.edi]
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| 314 | mov esi, [xSI + CPUMCTX.esi]
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| 315 |
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| 316 | vmlaunch
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| 317 | jmp .vmlaunch_done; ;/* here if vmlaunch detected a failure. */
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| 318 |
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| 319 | ALIGNCODE(16)
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| 320 | .vmlaunch_done:
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| 321 | jc near .vmxstart_invalid_vmxon_ptr
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| 322 | jz near .vmxstart_start_failed
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| 323 |
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| 324 | ; Restore base and limit of the IDTR & GDTR
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| 325 | lidt [xSP]
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| 326 | add xSP, xS*2
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| 327 | lgdt [xSP]
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| 328 | add xSP, xS*2
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| 329 |
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| 330 | push xDI
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| 331 | mov xDI, [xSP + xS * 2] ; pCtx
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| 332 |
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| 333 | mov [ss:xDI + CPUMCTX.eax], eax
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| 334 | mov [ss:xDI + CPUMCTX.ebx], ebx
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| 335 | mov [ss:xDI + CPUMCTX.ecx], ecx
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| 336 | mov [ss:xDI + CPUMCTX.edx], edx
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| 337 | mov [ss:xDI + CPUMCTX.esi], esi
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| 338 | mov [ss:xDI + CPUMCTX.ebp], ebp
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| 339 | %ifdef RT_ARCH_AMD64
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| 340 | pop xAX ; the guest edi we pushed above
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| 341 | mov dword [ss:xDI + CPUMCTX.edi], eax
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| 342 | %else
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| 343 | pop dword [ss:xDI + CPUMCTX.edi] ; the guest edi we pushed above
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| 344 | %endif
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| 345 |
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| 346 | %ifdef VBOX_WITH_DR6_EXPERIMENT
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| 347 | ; Save DR6 - experiment, not safe!
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| 348 | mov xAX, dr6
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| 349 | mov [ss:xDI + CPUMCTX.dr6], xAX
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| 350 | %endif
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| 351 |
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| 352 | pop xAX ; saved LDTR
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| 353 | lldt ax
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| 354 |
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| 355 | add xSP, xS ; pCtx
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| 356 |
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| 357 | ; Restore segment registers
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| 358 | MYPOPSEGS xAX, ax
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| 359 |
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| 360 | ; Restore general purpose registers
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| 361 | MYPOPAD
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| 362 |
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| 363 | mov eax, VINF_SUCCESS
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| 364 |
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| 365 | .vmstart_end:
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| 366 | popf
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| 367 | pop xBP
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| 368 | ret
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| 369 |
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| 370 |
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| 371 | .vmxstart_invalid_vmxon_ptr:
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| 372 | ; Restore base and limit of the IDTR & GDTR
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| 373 | lidt [xSP]
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| 374 | add xSP, xS*2
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| 375 | lgdt [xSP]
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| 376 | add xSP, xS*2
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| 377 |
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| 378 | pop xAX ; saved LDTR
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| 379 | lldt ax
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| 380 |
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| 381 | add xSP, xS ; pCtx
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| 382 |
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| 383 | ; Restore segment registers
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| 384 | MYPOPSEGS xAX, ax
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| 385 |
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| 386 | ; Restore all general purpose host registers.
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| 387 | MYPOPAD
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| 388 | mov eax, VERR_VMX_INVALID_VMXON_PTR
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| 389 | jmp .vmstart_end
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| 390 |
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| 391 | .vmxstart_start_failed:
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| 392 | ; Restore base and limit of the IDTR & GDTR
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| 393 | lidt [xSP]
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| 394 | add xSP, xS*2
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| 395 | lgdt [xSP]
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| 396 | add xSP, xS*2
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| 397 |
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| 398 | pop xAX ; saved LDTR
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| 399 | lldt ax
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| 400 |
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| 401 | add xSP, xS ; pCtx
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| 402 |
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| 403 | ; Restore segment registers
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| 404 | MYPOPSEGS xAX, ax
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| 405 |
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| 406 | ; Restore all general purpose host registers.
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| 407 | MYPOPAD
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| 408 | mov eax, VERR_VMX_UNABLE_TO_START_VM
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| 409 | jmp .vmstart_end
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| 410 |
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| 411 | ENDPROC VMXR0StartVM32
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| 412 |
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| 413 | %ifdef RT_ARCH_AMD64
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| 414 | ;/**
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| 415 | ; * Prepares for and executes VMLAUNCH/VMRESUME (64 bits guest mode)
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| 416 | ; *
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| 417 | ; * @returns VBox status code
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| 418 | ; * @param fResume vmlauch/vmresume
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| 419 | ; * @param pCtx Guest context
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| 420 | ; */
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| 421 | BEGINPROC VMXR0StartVM64
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| 422 | push xBP
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| 423 | mov xBP, xSP
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| 424 |
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| 425 | pushf
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| 426 | cli
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| 427 |
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| 428 | ;/* First we have to save some final CPU context registers. */
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| 429 | mov rax, qword .vmlaunch64_done
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| 430 | push rax
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| 431 | mov rax, VMX_VMCS_HOST_RIP ;/* return address (too difficult to continue after VMLAUNCH?) */
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| 432 | vmwrite rax, [xSP]
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| 433 | ;/* Note: assumes success... */
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| 434 | add xSP, xS
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| 435 |
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| 436 | ;/* Manual save and restore:
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| 437 | ; * - General purpose registers except RIP, RSP
|
|---|
| 438 | ; *
|
|---|
| 439 | ; * Trashed:
|
|---|
| 440 | ; * - CR2 (we don't care)
|
|---|
| 441 | ; * - LDTR (reset to 0)
|
|---|
| 442 | ; * - DRx (presumably not changed at all)
|
|---|
| 443 | ; * - DR7 (reset to 0x400)
|
|---|
| 444 | ; * - EFLAGS (reset to RT_BIT(1); not relevant)
|
|---|
| 445 | ; *
|
|---|
| 446 | ; */
|
|---|
| 447 |
|
|---|
| 448 | ;/* Save all general purpose host registers. */
|
|---|
| 449 | MYPUSHAD
|
|---|
| 450 |
|
|---|
| 451 | ;/* Save the Guest CPU context pointer. */
|
|---|
| 452 | %ifdef ASM_CALL64_GCC
|
|---|
| 453 | ; fResume already in rdi
|
|---|
| 454 | ; pCtx already in rsi
|
|---|
| 455 | %else
|
|---|
| 456 | mov rdi, rcx ; fResume
|
|---|
| 457 | mov rsi, rdx ; pCtx
|
|---|
| 458 | %endif
|
|---|
| 459 |
|
|---|
| 460 | ;/* Save segment registers */
|
|---|
| 461 | ; Note: MYPUSHSEGS trashes rdx & rcx, so we moved it here (msvc amd64 case)
|
|---|
| 462 | MYPUSHSEGS xAX, ax
|
|---|
| 463 |
|
|---|
| 464 | ; Save the host LSTAR, CSTAR, SFMASK & KERNEL_GSBASE MSRs and restore the guest MSRs
|
|---|
| 465 | ; @todo use the automatic load feature for MSRs
|
|---|
| 466 | LOADGUESTMSR MSR_K8_LSTAR, CPUMCTX.msrLSTAR
|
|---|
| 467 | LOADGUESTMSR MSR_K8_CSTAR, CPUMCTX.msrCSTAR
|
|---|
| 468 | LOADGUESTMSR MSR_K6_STAR, CPUMCTX.msrSTAR
|
|---|
| 469 | LOADGUESTMSR MSR_K8_SF_MASK, CPUMCTX.msrSFMASK
|
|---|
| 470 | LOADGUESTMSR MSR_K8_KERNEL_GS_BASE, CPUMCTX.msrKERNELGSBASE
|
|---|
| 471 |
|
|---|
| 472 | ; Save the pCtx pointer
|
|---|
| 473 | push xSI
|
|---|
| 474 |
|
|---|
| 475 | ; Save LDTR
|
|---|
| 476 | xor eax, eax
|
|---|
| 477 | sldt ax
|
|---|
| 478 | push xAX
|
|---|
| 479 |
|
|---|
| 480 | ; VMX only saves the base of the GDTR & IDTR and resets the limit to 0xffff; we must restore the limit correctly!
|
|---|
| 481 | sub xSP, xS*2
|
|---|
| 482 | sgdt [xSP]
|
|---|
| 483 |
|
|---|
| 484 | sub xSP, xS*2
|
|---|
| 485 | sidt [xSP]
|
|---|
| 486 |
|
|---|
| 487 | %ifdef VBOX_WITH_DR6_EXPERIMENT
|
|---|
| 488 | ; Restore DR6 - experiment, not safe!
|
|---|
| 489 | mov xBX, [xSI + CPUMCTX.dr6]
|
|---|
| 490 | mov dr6, xBX
|
|---|
| 491 | %endif
|
|---|
| 492 |
|
|---|
| 493 | ; Restore CR2
|
|---|
| 494 | mov rbx, qword [xSI + CPUMCTX.cr2]
|
|---|
| 495 | mov cr2, rbx
|
|---|
| 496 |
|
|---|
| 497 | mov eax, VMX_VMCS_HOST_RSP
|
|---|
| 498 | vmwrite xAX, xSP
|
|---|
| 499 | ;/* Note: assumes success... */
|
|---|
| 500 | ;/* Don't mess with ESP anymore!! */
|
|---|
| 501 |
|
|---|
| 502 | ;/* Restore Guest's general purpose registers. */
|
|---|
| 503 | mov rax, qword [xSI + CPUMCTX.eax]
|
|---|
| 504 | mov rbx, qword [xSI + CPUMCTX.ebx]
|
|---|
| 505 | mov rcx, qword [xSI + CPUMCTX.ecx]
|
|---|
| 506 | mov rdx, qword [xSI + CPUMCTX.edx]
|
|---|
| 507 | mov rbp, qword [xSI + CPUMCTX.ebp]
|
|---|
| 508 | mov r8, qword [xSI + CPUMCTX.r8]
|
|---|
| 509 | mov r9, qword [xSI + CPUMCTX.r9]
|
|---|
| 510 | mov r10, qword [xSI + CPUMCTX.r10]
|
|---|
| 511 | mov r11, qword [xSI + CPUMCTX.r11]
|
|---|
| 512 | mov r12, qword [xSI + CPUMCTX.r12]
|
|---|
| 513 | mov r13, qword [xSI + CPUMCTX.r13]
|
|---|
| 514 | mov r14, qword [xSI + CPUMCTX.r14]
|
|---|
| 515 | mov r15, qword [xSI + CPUMCTX.r15]
|
|---|
| 516 |
|
|---|
| 517 | ; resume or start?
|
|---|
| 518 | cmp xDI, 0 ; fResume
|
|---|
| 519 | je .vmlauch64_lauch
|
|---|
| 520 |
|
|---|
| 521 | ;/* Restore edi & esi. */
|
|---|
| 522 | mov rdi, qword [xSI + CPUMCTX.edi]
|
|---|
| 523 | mov rsi, qword [xSI + CPUMCTX.esi]
|
|---|
| 524 |
|
|---|
| 525 | vmresume
|
|---|
| 526 | jmp .vmlaunch64_done; ;/* here if vmresume detected a failure. */
|
|---|
| 527 |
|
|---|
| 528 | .vmlauch64_lauch:
|
|---|
| 529 | ;/* Restore rdi & rsi. */
|
|---|
| 530 | mov rdi, qword [xSI + CPUMCTX.edi]
|
|---|
| 531 | mov rsi, qword [xSI + CPUMCTX.esi]
|
|---|
| 532 |
|
|---|
| 533 | vmlaunch
|
|---|
| 534 | jmp .vmlaunch64_done; ;/* here if vmlaunch detected a failure. */
|
|---|
| 535 |
|
|---|
| 536 | ALIGNCODE(16)
|
|---|
| 537 | .vmlaunch64_done:
|
|---|
| 538 | jc near .vmxstart64_invalid_vmxon_ptr
|
|---|
| 539 | jz near .vmxstart64_start_failed
|
|---|
| 540 |
|
|---|
| 541 | ; Restore base and limit of the IDTR & GDTR
|
|---|
| 542 | lidt [xSP]
|
|---|
| 543 | add xSP, xS*2
|
|---|
| 544 | lgdt [xSP]
|
|---|
| 545 | add xSP, xS*2
|
|---|
| 546 |
|
|---|
| 547 | push xDI
|
|---|
| 548 | mov xDI, [xSP + xS * 2] ; pCtx
|
|---|
| 549 |
|
|---|
| 550 | mov qword [xDI + CPUMCTX.eax], rax
|
|---|
| 551 | mov qword [xDI + CPUMCTX.ebx], rbx
|
|---|
| 552 | mov qword [xDI + CPUMCTX.ecx], rcx
|
|---|
| 553 | mov qword [xDI + CPUMCTX.edx], rdx
|
|---|
| 554 | mov qword [xDI + CPUMCTX.esi], rsi
|
|---|
| 555 | mov qword [xDI + CPUMCTX.ebp], rbp
|
|---|
| 556 | mov qword [xDI + CPUMCTX.r8], r8
|
|---|
| 557 | mov qword [xDI + CPUMCTX.r9], r9
|
|---|
| 558 | mov qword [xDI + CPUMCTX.r10], r10
|
|---|
| 559 | mov qword [xDI + CPUMCTX.r11], r11
|
|---|
| 560 | mov qword [xDI + CPUMCTX.r12], r12
|
|---|
| 561 | mov qword [xDI + CPUMCTX.r13], r13
|
|---|
| 562 | mov qword [xDI + CPUMCTX.r14], r14
|
|---|
| 563 | mov qword [xDI + CPUMCTX.r15], r15
|
|---|
| 564 |
|
|---|
| 565 | pop xAX ; the guest edi we pushed above
|
|---|
| 566 | mov qword [xDI + CPUMCTX.edi], rax
|
|---|
| 567 |
|
|---|
| 568 | %ifdef VBOX_WITH_DR6_EXPERIMENT
|
|---|
| 569 | ; Save DR6 - experiment, not safe!
|
|---|
| 570 | mov xAX, dr6
|
|---|
| 571 | mov [xDI + CPUMCTX.dr6], xAX
|
|---|
| 572 | %endif
|
|---|
| 573 |
|
|---|
| 574 | pop xAX ; saved LDTR
|
|---|
| 575 | lldt ax
|
|---|
| 576 |
|
|---|
| 577 | pop xSI ; pCtx (needed in rsi by the macros below)
|
|---|
| 578 |
|
|---|
| 579 | ; Restore the host LSTAR, CSTAR, SFMASK & KERNEL_GSBASE MSRs
|
|---|
| 580 | ; @todo use the automatic load feature for MSRs
|
|---|
| 581 | LOADHOSTMSREX MSR_K8_KERNEL_GS_BASE, CPUMCTX.msrKERNELGSBASE
|
|---|
| 582 | LOADHOSTMSR MSR_K8_SF_MASK
|
|---|
| 583 | LOADHOSTMSR MSR_K6_STAR
|
|---|
| 584 | LOADHOSTMSR MSR_K8_CSTAR
|
|---|
| 585 | LOADHOSTMSR MSR_K8_LSTAR
|
|---|
| 586 |
|
|---|
| 587 | ; Restore segment registers
|
|---|
| 588 | MYPOPSEGS xAX, ax
|
|---|
| 589 |
|
|---|
| 590 | ; Restore general purpose registers
|
|---|
| 591 | MYPOPAD
|
|---|
| 592 |
|
|---|
| 593 | mov eax, VINF_SUCCESS
|
|---|
| 594 |
|
|---|
| 595 | .vmstart64_end:
|
|---|
| 596 | popf
|
|---|
| 597 | pop xBP
|
|---|
| 598 | ret
|
|---|
| 599 |
|
|---|
| 600 |
|
|---|
| 601 | .vmxstart64_invalid_vmxon_ptr:
|
|---|
| 602 | ; Restore base and limit of the IDTR & GDTR
|
|---|
| 603 | lidt [xSP]
|
|---|
| 604 | add xSP, xS*2
|
|---|
| 605 | lgdt [xSP]
|
|---|
| 606 | add xSP, xS*2
|
|---|
| 607 |
|
|---|
| 608 | pop xAX ; saved LDTR
|
|---|
| 609 | lldt ax
|
|---|
| 610 |
|
|---|
| 611 | pop xSI ; pCtx (needed in rsi by the macros below)
|
|---|
| 612 |
|
|---|
| 613 | ; Restore the host LSTAR, CSTAR, SFMASK & KERNEL_GSBASE MSRs
|
|---|
| 614 | ; @todo use the automatic load feature for MSRs
|
|---|
| 615 | LOADHOSTMSREX MSR_K8_KERNEL_GS_BASE, CPUMCTX.msrKERNELGSBASE
|
|---|
| 616 | LOADHOSTMSR MSR_K8_SF_MASK
|
|---|
| 617 | LOADHOSTMSR MSR_K8_CSTAR
|
|---|
| 618 | LOADHOSTMSR MSR_K8_LSTAR
|
|---|
| 619 |
|
|---|
| 620 | ; Restore segment registers
|
|---|
| 621 | MYPOPSEGS xAX, ax
|
|---|
| 622 |
|
|---|
| 623 | ; Restore all general purpose host registers.
|
|---|
| 624 | MYPOPAD
|
|---|
| 625 | mov eax, VERR_VMX_INVALID_VMXON_PTR
|
|---|
| 626 | jmp .vmstart64_end
|
|---|
| 627 |
|
|---|
| 628 | .vmxstart64_start_failed:
|
|---|
| 629 | ; Restore base and limit of the IDTR & GDTR
|
|---|
| 630 | lidt [xSP]
|
|---|
| 631 | add xSP, xS*2
|
|---|
| 632 | lgdt [xSP]
|
|---|
| 633 | add xSP, xS*2
|
|---|
| 634 |
|
|---|
| 635 | pop xAX ; saved LDTR
|
|---|
| 636 | lldt ax
|
|---|
| 637 |
|
|---|
| 638 | pop xSI ; pCtx (needed in rsi by the macros below)
|
|---|
| 639 |
|
|---|
| 640 | ; Restore the host LSTAR, CSTAR, SFMASK & KERNEL_GSBASE MSRs
|
|---|
| 641 | ; @todo use the automatic load feature for MSRs
|
|---|
| 642 | LOADHOSTMSREX MSR_K8_KERNEL_GS_BASE, CPUMCTX.msrKERNELGSBASE
|
|---|
| 643 | LOADHOSTMSR MSR_K8_SF_MASK
|
|---|
| 644 | LOADHOSTMSR MSR_K8_CSTAR
|
|---|
| 645 | LOADHOSTMSR MSR_K8_LSTAR
|
|---|
| 646 |
|
|---|
| 647 | ; Restore segment registers
|
|---|
| 648 | MYPOPSEGS xAX, ax
|
|---|
| 649 |
|
|---|
| 650 | ; Restore all general purpose host registers.
|
|---|
| 651 | MYPOPAD
|
|---|
| 652 | mov eax, VERR_VMX_UNABLE_TO_START_VM
|
|---|
| 653 | jmp .vmstart64_end
|
|---|
| 654 | ENDPROC VMXR0StartVM64
|
|---|
| 655 |
|
|---|
| 656 | ;/**
|
|---|
| 657 | ; * Executes VMWRITE
|
|---|
| 658 | ; *
|
|---|
| 659 | ; * @returns VBox status code
|
|---|
| 660 | ; * @param idxField x86: [ebp + 08h] msc: rcx gcc: rdi VMCS index
|
|---|
| 661 | ; * @param pData x86: [ebp + 0ch] msc: rdx gcc: rsi VM field value
|
|---|
| 662 | ; */
|
|---|
| 663 | BEGINPROC VMXWriteVMCS64
|
|---|
| 664 | %ifdef ASM_CALL64_GCC
|
|---|
| 665 | mov eax, 0ffffffffh
|
|---|
| 666 | and rdi, rax
|
|---|
| 667 | xor rax, rax
|
|---|
| 668 | vmwrite rdi, rsi
|
|---|
| 669 | %else
|
|---|
| 670 | mov eax, 0ffffffffh
|
|---|
| 671 | and rcx, rax
|
|---|
| 672 | xor rax, rax
|
|---|
| 673 | vmwrite rcx, rdx
|
|---|
| 674 | %endif
|
|---|
| 675 | jnc .valid_vmcs
|
|---|
| 676 | mov eax, VERR_VMX_INVALID_VMCS_PTR
|
|---|
| 677 | ret
|
|---|
| 678 | .valid_vmcs:
|
|---|
| 679 | jnz .the_end
|
|---|
| 680 | mov eax, VERR_VMX_INVALID_VMCS_FIELD
|
|---|
| 681 | .the_end:
|
|---|
| 682 | ret
|
|---|
| 683 | ENDPROC VMXWriteVMCS64
|
|---|
| 684 |
|
|---|
| 685 | ;/**
|
|---|
| 686 | ; * Executes VMREAD
|
|---|
| 687 | ; *
|
|---|
| 688 | ; * @returns VBox status code
|
|---|
| 689 | ; * @param idxField VMCS index
|
|---|
| 690 | ; * @param pData Ptr to store VM field value
|
|---|
| 691 | ; */
|
|---|
| 692 | ;DECLASM(int) VMXReadVMCS64(uint32_t idxField, uint64_t *pData);
|
|---|
| 693 | BEGINPROC VMXReadVMCS64
|
|---|
| 694 | %ifdef ASM_CALL64_GCC
|
|---|
| 695 | mov eax, 0ffffffffh
|
|---|
| 696 | and rdi, rax
|
|---|
| 697 | xor rax, rax
|
|---|
| 698 | vmread [rsi], rdi
|
|---|
| 699 | %else
|
|---|
| 700 | mov eax, 0ffffffffh
|
|---|
| 701 | and rcx, rax
|
|---|
| 702 | xor rax, rax
|
|---|
| 703 | vmread [rdx], rcx
|
|---|
| 704 | %endif
|
|---|
| 705 | jnc .valid_vmcs
|
|---|
| 706 | mov eax, VERR_VMX_INVALID_VMCS_PTR
|
|---|
| 707 | ret
|
|---|
| 708 | .valid_vmcs:
|
|---|
| 709 | jnz .the_end
|
|---|
| 710 | mov eax, VERR_VMX_INVALID_VMCS_FIELD
|
|---|
| 711 | .the_end:
|
|---|
| 712 | ret
|
|---|
| 713 | ENDPROC VMXReadVMCS64
|
|---|
| 714 |
|
|---|
| 715 |
|
|---|
| 716 | ;/**
|
|---|
| 717 | ; * Executes VMXON
|
|---|
| 718 | ; *
|
|---|
| 719 | ; * @returns VBox status code
|
|---|
| 720 | ; * @param HCPhysVMXOn Physical address of VMXON structure
|
|---|
| 721 | ; */
|
|---|
| 722 | ;DECLASM(int) VMXEnable(RTHCPHYS HCPhysVMXOn);
|
|---|
| 723 | BEGINPROC VMXEnable
|
|---|
| 724 | %ifdef RT_ARCH_AMD64
|
|---|
| 725 | xor rax, rax
|
|---|
| 726 | %ifdef ASM_CALL64_GCC
|
|---|
| 727 | push rdi
|
|---|
| 728 | %else
|
|---|
| 729 | push rcx
|
|---|
| 730 | %endif
|
|---|
| 731 | vmxon [rsp]
|
|---|
| 732 | %else
|
|---|
| 733 | xor eax, eax
|
|---|
| 734 | vmxon [esp + 4]
|
|---|
| 735 | %endif
|
|---|
| 736 | jnc .good
|
|---|
| 737 | mov eax, VERR_VMX_INVALID_VMXON_PTR
|
|---|
| 738 | jmp .the_end
|
|---|
| 739 |
|
|---|
| 740 | .good:
|
|---|
| 741 | jnz .the_end
|
|---|
| 742 | mov eax, VERR_VMX_GENERIC
|
|---|
| 743 |
|
|---|
| 744 | .the_end:
|
|---|
| 745 | %ifdef RT_ARCH_AMD64
|
|---|
| 746 | add rsp, 8
|
|---|
| 747 | %endif
|
|---|
| 748 | ret
|
|---|
| 749 | ENDPROC VMXEnable
|
|---|
| 750 |
|
|---|
| 751 | ;/**
|
|---|
| 752 | ; * Executes VMXOFF
|
|---|
| 753 | ; */
|
|---|
| 754 | ;DECLASM(void) VMXDisable(void);
|
|---|
| 755 | BEGINPROC VMXDisable
|
|---|
| 756 | vmxoff
|
|---|
| 757 | ret
|
|---|
| 758 | ENDPROC VMXDisable
|
|---|
| 759 |
|
|---|
| 760 |
|
|---|
| 761 | ;/**
|
|---|
| 762 | ; * Executes VMCLEAR
|
|---|
| 763 | ; *
|
|---|
| 764 | ; * @returns VBox status code
|
|---|
| 765 | ; * @param HCPhysVMCS Physical address of VM control structure
|
|---|
| 766 | ; */
|
|---|
| 767 | ;DECLASM(int) VMXClearVMCS(RTHCPHYS HCPhysVMCS);
|
|---|
| 768 | BEGINPROC VMXClearVMCS
|
|---|
| 769 | %ifdef RT_ARCH_AMD64
|
|---|
| 770 | xor rax, rax
|
|---|
| 771 | %ifdef ASM_CALL64_GCC
|
|---|
| 772 | push rdi
|
|---|
| 773 | %else
|
|---|
| 774 | push rcx
|
|---|
| 775 | %endif
|
|---|
| 776 | vmclear [rsp]
|
|---|
| 777 | %else
|
|---|
| 778 | xor eax, eax
|
|---|
| 779 | vmclear [esp + 4]
|
|---|
| 780 | %endif
|
|---|
| 781 | jnc .the_end
|
|---|
| 782 | mov eax, VERR_VMX_INVALID_VMCS_PTR
|
|---|
| 783 | .the_end:
|
|---|
| 784 | %ifdef RT_ARCH_AMD64
|
|---|
| 785 | add rsp, 8
|
|---|
| 786 | %endif
|
|---|
| 787 | ret
|
|---|
| 788 | ENDPROC VMXClearVMCS
|
|---|
| 789 |
|
|---|
| 790 |
|
|---|
| 791 | ;/**
|
|---|
| 792 | ; * Executes VMPTRLD
|
|---|
| 793 | ; *
|
|---|
| 794 | ; * @returns VBox status code
|
|---|
| 795 | ; * @param HCPhysVMCS Physical address of VMCS structure
|
|---|
| 796 | ; */
|
|---|
| 797 | ;DECLASM(int) VMXActivateVMCS(RTHCPHYS HCPhysVMCS);
|
|---|
| 798 | BEGINPROC VMXActivateVMCS
|
|---|
| 799 | %ifdef RT_ARCH_AMD64
|
|---|
| 800 | xor rax, rax
|
|---|
| 801 | %ifdef ASM_CALL64_GCC
|
|---|
| 802 | push rdi
|
|---|
| 803 | %else
|
|---|
| 804 | push rcx
|
|---|
| 805 | %endif
|
|---|
| 806 | vmptrld [rsp]
|
|---|
| 807 | %else
|
|---|
| 808 | xor eax, eax
|
|---|
| 809 | vmptrld [esp + 4]
|
|---|
| 810 | %endif
|
|---|
| 811 | jnc .the_end
|
|---|
| 812 | mov eax, VERR_VMX_INVALID_VMCS_PTR
|
|---|
| 813 | .the_end:
|
|---|
| 814 | %ifdef RT_ARCH_AMD64
|
|---|
| 815 | add rsp, 8
|
|---|
| 816 | %endif
|
|---|
| 817 | ret
|
|---|
| 818 | ENDPROC VMXActivateVMCS
|
|---|
| 819 |
|
|---|
| 820 | %endif ; RT_ARCH_AMD64
|
|---|
| 821 |
|
|---|
| 822 | ;/**
|
|---|
| 823 | ; * Executes VMPTRST
|
|---|
| 824 | ; *
|
|---|
| 825 | ; * @returns VBox status code
|
|---|
| 826 | ; * @param [esp + 04h] gcc:rdi msc:rcx Param 1 - First parameter - Address that will receive the current pointer
|
|---|
| 827 | ; */
|
|---|
| 828 | ;DECLASM(int) VMXGetActivateVMCS(RTHCPHYS *pVMCS);
|
|---|
| 829 | BEGINPROC VMXGetActivateVMCS
|
|---|
| 830 | %ifdef RT_ARCH_AMD64
|
|---|
| 831 | %ifdef ASM_CALL64_GCC
|
|---|
| 832 | vmptrst qword [rdi]
|
|---|
| 833 | %else
|
|---|
| 834 | vmptrst qword [rcx]
|
|---|
| 835 | %endif
|
|---|
| 836 | %else
|
|---|
| 837 | vmptrst qword [esp+04h]
|
|---|
| 838 | %endif
|
|---|
| 839 | xor eax, eax
|
|---|
| 840 | ret
|
|---|
| 841 | ENDPROC VMXGetActivateVMCS
|
|---|
| 842 |
|
|---|
| 843 |
|
|---|
| 844 | ;/**
|
|---|
| 845 | ; * Prepares for and executes VMRUN (32 bits guests)
|
|---|
| 846 | ; *
|
|---|
| 847 | ; * @returns VBox status code
|
|---|
| 848 | ; * @param HCPhysVMCB Physical address of host VMCB
|
|---|
| 849 | ; * @param HCPhysVMCB Physical address of guest VMCB
|
|---|
| 850 | ; * @param pCtx Guest context
|
|---|
| 851 | ; */
|
|---|
| 852 | BEGINPROC SVMVMRun
|
|---|
| 853 | %ifdef RT_ARCH_AMD64 ; fake a cdecl stack frame
|
|---|
| 854 | %ifdef ASM_CALL64_GCC
|
|---|
| 855 | push rdx
|
|---|
| 856 | push rsi
|
|---|
| 857 | push rdi
|
|---|
| 858 | %else
|
|---|
| 859 | push r8
|
|---|
| 860 | push rdx
|
|---|
| 861 | push rcx
|
|---|
| 862 | %endif
|
|---|
| 863 | push 0
|
|---|
| 864 | %endif
|
|---|
| 865 | push xBP
|
|---|
| 866 | mov xBP, xSP
|
|---|
| 867 | pushf
|
|---|
| 868 |
|
|---|
| 869 | ;/* Manual save and restore:
|
|---|
| 870 | ; * - General purpose registers except RIP, RSP, RAX
|
|---|
| 871 | ; *
|
|---|
| 872 | ; * Trashed:
|
|---|
| 873 | ; * - CR2 (we don't care)
|
|---|
| 874 | ; * - LDTR (reset to 0)
|
|---|
| 875 | ; * - DRx (presumably not changed at all)
|
|---|
| 876 | ; * - DR7 (reset to 0x400)
|
|---|
| 877 | ; */
|
|---|
| 878 |
|
|---|
| 879 | ;/* Save all general purpose host registers. */
|
|---|
| 880 | MYPUSHAD
|
|---|
| 881 |
|
|---|
| 882 | ;/* Save the Guest CPU context pointer. */
|
|---|
| 883 | mov xSI, [xBP + xS*2 + RTHCPHYS_CB*2] ; pCtx
|
|---|
| 884 | push xSI ; push for saving the state at the end
|
|---|
| 885 |
|
|---|
| 886 | ; Restore CR2
|
|---|
| 887 | mov ebx, [xSI + CPUMCTX.cr2]
|
|---|
| 888 | mov cr2, xBX
|
|---|
| 889 |
|
|---|
| 890 | ; save host fs, gs, sysenter msr etc
|
|---|
| 891 | mov xAX, [xBP + xS*2] ; pVMCBHostPhys (64 bits physical address; x86: take low dword only)
|
|---|
| 892 | push xAX ; save for the vmload after vmrun
|
|---|
| 893 | vmsave
|
|---|
| 894 |
|
|---|
| 895 | ; setup eax for VMLOAD
|
|---|
| 896 | mov xAX, [xBP + xS*2 + RTHCPHYS_CB] ; pVMCBPhys (64 bits physical address; take low dword only)
|
|---|
| 897 |
|
|---|
| 898 | ;/* Restore Guest's general purpose registers. */
|
|---|
| 899 | ;/* EAX is loaded from the VMCB by VMRUN */
|
|---|
| 900 | mov ebx, [xSI + CPUMCTX.ebx]
|
|---|
| 901 | mov ecx, [xSI + CPUMCTX.ecx]
|
|---|
| 902 | mov edx, [xSI + CPUMCTX.edx]
|
|---|
| 903 | mov edi, [xSI + CPUMCTX.edi]
|
|---|
| 904 | mov ebp, [xSI + CPUMCTX.ebp]
|
|---|
| 905 | mov esi, [xSI + CPUMCTX.esi]
|
|---|
| 906 |
|
|---|
| 907 | ; Clear the global interrupt flag & execute sti to make sure external interrupts cause a world switch
|
|---|
| 908 | clgi
|
|---|
| 909 | sti
|
|---|
| 910 |
|
|---|
| 911 | ; load guest fs, gs, sysenter msr etc
|
|---|
| 912 | vmload
|
|---|
| 913 | ; run the VM
|
|---|
| 914 | vmrun
|
|---|
| 915 |
|
|---|
| 916 | ;/* EAX is in the VMCB already; we can use it here. */
|
|---|
| 917 |
|
|---|
| 918 | ; save guest fs, gs, sysenter msr etc
|
|---|
| 919 | vmsave
|
|---|
| 920 |
|
|---|
| 921 | ; load host fs, gs, sysenter msr etc
|
|---|
| 922 | pop xAX ; pushed above
|
|---|
| 923 | vmload
|
|---|
| 924 |
|
|---|
| 925 | ; Set the global interrupt flag again, but execute cli to make sure IF=0.
|
|---|
| 926 | cli
|
|---|
| 927 | stgi
|
|---|
| 928 |
|
|---|
| 929 | pop xAX ; pCtx
|
|---|
| 930 |
|
|---|
| 931 | mov [ss:xAX + CPUMCTX.ebx], ebx
|
|---|
| 932 | mov [ss:xAX + CPUMCTX.ecx], ecx
|
|---|
| 933 | mov [ss:xAX + CPUMCTX.edx], edx
|
|---|
| 934 | mov [ss:xAX + CPUMCTX.esi], esi
|
|---|
| 935 | mov [ss:xAX + CPUMCTX.edi], edi
|
|---|
| 936 | mov [ss:xAX + CPUMCTX.ebp], ebp
|
|---|
| 937 |
|
|---|
| 938 | ; Restore general purpose registers
|
|---|
| 939 | MYPOPAD
|
|---|
| 940 |
|
|---|
| 941 | mov eax, VINF_SUCCESS
|
|---|
| 942 |
|
|---|
| 943 | popf
|
|---|
| 944 | pop xBP
|
|---|
| 945 | %ifdef RT_ARCH_AMD64
|
|---|
| 946 | add xSP, 4*xS
|
|---|
| 947 | %endif
|
|---|
| 948 | ret
|
|---|
| 949 | ENDPROC SVMVMRun
|
|---|
| 950 |
|
|---|
| 951 | %ifdef RT_ARCH_AMD64
|
|---|
| 952 | ;/**
|
|---|
| 953 | ; * Prepares for and executes VMRUN (64 bits guests)
|
|---|
| 954 | ; *
|
|---|
| 955 | ; * @returns VBox status code
|
|---|
| 956 | ; * @param HCPhysVMCB Physical address of host VMCB
|
|---|
| 957 | ; * @param HCPhysVMCB Physical address of guest VMCB
|
|---|
| 958 | ; * @param pCtx Guest context
|
|---|
| 959 | ; */
|
|---|
| 960 | BEGINPROC SVMVMRun64
|
|---|
| 961 | ; fake a cdecl stack frame
|
|---|
| 962 | %ifdef ASM_CALL64_GCC
|
|---|
| 963 | push rdx
|
|---|
| 964 | push rsi
|
|---|
| 965 | push rdi
|
|---|
| 966 | %else
|
|---|
| 967 | push r8
|
|---|
| 968 | push rdx
|
|---|
| 969 | push rcx
|
|---|
| 970 | %endif
|
|---|
| 971 | push 0
|
|---|
| 972 | push rbp
|
|---|
| 973 | mov rbp, rsp
|
|---|
| 974 | pushf
|
|---|
| 975 |
|
|---|
| 976 | ;/* Manual save and restore:
|
|---|
| 977 | ; * - General purpose registers except RIP, RSP, RAX
|
|---|
| 978 | ; *
|
|---|
| 979 | ; * Trashed:
|
|---|
| 980 | ; * - CR2 (we don't care)
|
|---|
| 981 | ; * - LDTR (reset to 0)
|
|---|
| 982 | ; * - DRx (presumably not changed at all)
|
|---|
| 983 | ; * - DR7 (reset to 0x400)
|
|---|
| 984 | ; */
|
|---|
| 985 |
|
|---|
| 986 | ;/* Save all general purpose host registers. */
|
|---|
| 987 | MYPUSHAD
|
|---|
| 988 |
|
|---|
| 989 | ;/* Save the Guest CPU context pointer. */
|
|---|
| 990 | mov rsi, [rbp + xS*2 + RTHCPHYS_CB*2] ; pCtx
|
|---|
| 991 | push rsi ; push for saving the state at the end
|
|---|
| 992 |
|
|---|
| 993 | ; Restore CR2
|
|---|
| 994 | mov rbx, [rsi + CPUMCTX.cr2]
|
|---|
| 995 | mov cr2, rbx
|
|---|
| 996 |
|
|---|
| 997 | ; save host fs, gs, sysenter msr etc
|
|---|
| 998 | mov rax, [rbp + xS*2] ; pVMCBHostPhys (64 bits physical address; x86: take low dword only)
|
|---|
| 999 | push rax ; save for the vmload after vmrun
|
|---|
| 1000 | vmsave
|
|---|
| 1001 |
|
|---|
| 1002 | ; setup eax for VMLOAD
|
|---|
| 1003 | mov rax, [rbp + xS*2 + RTHCPHYS_CB] ; pVMCBPhys (64 bits physical address; take low dword only)
|
|---|
| 1004 |
|
|---|
| 1005 | ;/* Restore Guest's general purpose registers. */
|
|---|
| 1006 | ;/* RAX is loaded from the VMCB by VMRUN */
|
|---|
| 1007 | mov rbx, qword [xSI + CPUMCTX.ebx]
|
|---|
| 1008 | mov rcx, qword [xSI + CPUMCTX.ecx]
|
|---|
| 1009 | mov rdx, qword [xSI + CPUMCTX.edx]
|
|---|
| 1010 | mov rdi, qword [xSI + CPUMCTX.edi]
|
|---|
| 1011 | mov rbp, qword [xSI + CPUMCTX.ebp]
|
|---|
| 1012 | mov r8, qword [xSI + CPUMCTX.r8]
|
|---|
| 1013 | mov r9, qword [xSI + CPUMCTX.r9]
|
|---|
| 1014 | mov r10, qword [xSI + CPUMCTX.r10]
|
|---|
| 1015 | mov r11, qword [xSI + CPUMCTX.r11]
|
|---|
| 1016 | mov r12, qword [xSI + CPUMCTX.r12]
|
|---|
| 1017 | mov r13, qword [xSI + CPUMCTX.r13]
|
|---|
| 1018 | mov r14, qword [xSI + CPUMCTX.r14]
|
|---|
| 1019 | mov r15, qword [xSI + CPUMCTX.r15]
|
|---|
| 1020 | mov rsi, qword [xSI + CPUMCTX.esi]
|
|---|
| 1021 |
|
|---|
| 1022 | ; Clear the global interrupt flag & execute sti to make sure external interrupts cause a world switch
|
|---|
| 1023 | clgi
|
|---|
| 1024 | sti
|
|---|
| 1025 |
|
|---|
| 1026 | ; load guest fs, gs, sysenter msr etc
|
|---|
| 1027 | vmload
|
|---|
| 1028 | ; run the VM
|
|---|
| 1029 | vmrun
|
|---|
| 1030 |
|
|---|
| 1031 | ;/* RAX is in the VMCB already; we can use it here. */
|
|---|
| 1032 |
|
|---|
| 1033 | ; save guest fs, gs, sysenter msr etc
|
|---|
| 1034 | vmsave
|
|---|
| 1035 |
|
|---|
| 1036 | ; load host fs, gs, sysenter msr etc
|
|---|
| 1037 | pop rax ; pushed above
|
|---|
| 1038 | vmload
|
|---|
| 1039 |
|
|---|
| 1040 | ; Set the global interrupt flag again, but execute cli to make sure IF=0.
|
|---|
| 1041 | cli
|
|---|
| 1042 | stgi
|
|---|
| 1043 |
|
|---|
| 1044 | pop rax ; pCtx
|
|---|
| 1045 |
|
|---|
| 1046 | mov qword [rax + CPUMCTX.ebx], rbx
|
|---|
| 1047 | mov qword [rax + CPUMCTX.ecx], rcx
|
|---|
| 1048 | mov qword [rax + CPUMCTX.edx], rdx
|
|---|
| 1049 | mov qword [rax + CPUMCTX.esi], rsi
|
|---|
| 1050 | mov qword [rax + CPUMCTX.edi], rdi
|
|---|
| 1051 | mov qword [rax + CPUMCTX.ebp], rbp
|
|---|
| 1052 | mov qword [rax + CPUMCTX.r8], r8
|
|---|
| 1053 | mov qword [rax + CPUMCTX.r9], r9
|
|---|
| 1054 | mov qword [rax + CPUMCTX.r10], r10
|
|---|
| 1055 | mov qword [rax + CPUMCTX.r11], r11
|
|---|
| 1056 | mov qword [rax + CPUMCTX.r12], r12
|
|---|
| 1057 | mov qword [rax + CPUMCTX.r13], r13
|
|---|
| 1058 | mov qword [rax + CPUMCTX.r14], r14
|
|---|
| 1059 | mov qword [rax + CPUMCTX.r15], r15
|
|---|
| 1060 |
|
|---|
| 1061 | ; Restore general purpose registers
|
|---|
| 1062 | MYPOPAD
|
|---|
| 1063 |
|
|---|
| 1064 | mov eax, VINF_SUCCESS
|
|---|
| 1065 |
|
|---|
| 1066 | popf
|
|---|
| 1067 | pop rbp
|
|---|
| 1068 | add rsp, 4*xS
|
|---|
| 1069 | ret
|
|---|
| 1070 | ENDPROC SVMVMRun64
|
|---|
| 1071 | %endif ; RT_ARCH_AMD64
|
|---|
| 1072 |
|
|---|
| 1073 |
|
|---|
| 1074 | %if GC_ARCH_BITS == 64
|
|---|
| 1075 | ;;
|
|---|
| 1076 | ; Executes INVLPGA
|
|---|
| 1077 | ;
|
|---|
| 1078 | ; @param pPageGC msc:rcx gcc:rdi x86:[esp+04] Virtual page to invalidate
|
|---|
| 1079 | ; @param uASID msc:rdx gcc:rsi x86:[esp+0C] Tagged TLB id
|
|---|
| 1080 | ;
|
|---|
| 1081 | ;DECLASM(void) SVMInvlpgA(RTGCPTR pPageGC, uint32_t uASID);
|
|---|
| 1082 | BEGINPROC SVMInvlpgA
|
|---|
| 1083 | %ifdef RT_ARCH_AMD64
|
|---|
| 1084 | %ifdef ASM_CALL64_GCC
|
|---|
| 1085 | mov rax, rdi
|
|---|
| 1086 | mov rcx, rsi
|
|---|
| 1087 | %else
|
|---|
| 1088 | ; from http://www.cs.cmu.edu/~fp/courses/15213-s06/misc/asm64-handout.pdf:
|
|---|
| 1089 | ; ``Perhaps unexpectedly, instructions that move or generate 32-bit register
|
|---|
| 1090 | ; values also set the upper 32 bits of the register to zero. Consequently
|
|---|
| 1091 | ; there is no need for an instruction movzlq.''
|
|---|
| 1092 | mov eax, ecx
|
|---|
| 1093 | mov rcx, rdx
|
|---|
| 1094 | %endif
|
|---|
| 1095 | %else
|
|---|
| 1096 | mov eax, [esp + 4]
|
|---|
| 1097 | mov ecx, [esp + 0Ch]
|
|---|
| 1098 | %endif
|
|---|
| 1099 | invlpga [xAX], ecx
|
|---|
| 1100 | ret
|
|---|
| 1101 | ENDPROC SVMInvlpgA
|
|---|
| 1102 |
|
|---|
| 1103 | %else
|
|---|
| 1104 | ;;
|
|---|
| 1105 | ; Executes INVLPGA
|
|---|
| 1106 | ;
|
|---|
| 1107 | ; @param pPageGC msc:ecx gcc:edi x86:[esp+04] Virtual page to invalidate
|
|---|
| 1108 | ; @param uASID msc:edx gcc:esi x86:[esp+08] Tagged TLB id
|
|---|
| 1109 | ;
|
|---|
| 1110 | ;DECLASM(void) SVMInvlpgA(RTGCPTR pPageGC, uint32_t uASID);
|
|---|
| 1111 | BEGINPROC SVMInvlpgA
|
|---|
| 1112 | %ifdef RT_ARCH_AMD64
|
|---|
| 1113 | %ifdef ASM_CALL64_GCC
|
|---|
| 1114 | movzx rax, edi
|
|---|
| 1115 | mov ecx, esi
|
|---|
| 1116 | %else
|
|---|
| 1117 | ; from http://www.cs.cmu.edu/~fp/courses/15213-s06/misc/asm64-handout.pdf:
|
|---|
| 1118 | ; ``Perhaps unexpectedly, instructions that move or generate 32-bit register
|
|---|
| 1119 | ; values also set the upper 32 bits of the register to zero. Consequently
|
|---|
| 1120 | ; there is no need for an instruction movzlq.''
|
|---|
| 1121 | mov eax, ecx
|
|---|
| 1122 | mov ecx, edx
|
|---|
| 1123 | %endif
|
|---|
| 1124 | %else
|
|---|
| 1125 | mov eax, [esp + 4]
|
|---|
| 1126 | mov ecx, [esp + 8]
|
|---|
| 1127 | %endif
|
|---|
| 1128 | invlpga [xAX], ecx
|
|---|
| 1129 | ret
|
|---|
| 1130 | ENDPROC SVMInvlpgA
|
|---|
| 1131 |
|
|---|
| 1132 | %endif ; GC_ARCH_BITS != 64
|
|---|
| 1133 |
|
|---|
