1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* $Id: PGMGst.h $ */
/** @file
* VBox - Page Manager / Monitor, Guest Paging Template.
*/
/*
* Copyright (C) 2006-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
RT_C_DECLS_BEGIN
/* r3 */
PGM_GST_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0);
PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3);
PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta);
PGM_GST_DECL(int, Exit)(PVMCPU pVCpu);
/* all */
PGM_GST_DECL(int, GetPage)(PVMCPU pVCpu, RTGCPTR GCPtr, uint64_t *pfFlags, PRTGCPHYS pGCPhys);
PGM_GST_DECL(int, ModifyPage)(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask);
PGM_GST_DECL(int, GetPDE)(PVMCPU pVCpu, RTGCPTR GCPtr, PX86PDEPAE pPDE);
RT_C_DECLS_END
/**
* Initializes the guest bit of the paging mode data.
*
* @returns VBox status code.
* @param pVM Pointer to the VM.
* @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
* This is used early in the init process to avoid trouble with PDM
* not being initialized yet.
*/
PGM_GST_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0)
{
Assert(pModeData->uGstType == PGM_GST_TYPE);
/* Ring-3 */
pModeData->pfnR3GstRelocate = PGM_GST_NAME(Relocate);
pModeData->pfnR3GstExit = PGM_GST_NAME(Exit);
pModeData->pfnR3GstGetPDE = PGM_GST_NAME(GetPDE);
pModeData->pfnR3GstGetPage = PGM_GST_NAME(GetPage);
pModeData->pfnR3GstModifyPage = PGM_GST_NAME(ModifyPage);
if (fResolveGCAndR0)
{
int rc;
if (!HMIsEnabled(pVM))
{
#if PGM_SHW_TYPE != PGM_TYPE_AMD64 /* No AMD64 for traditional virtualization, only VT-x and AMD-V. */
/* RC */
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPage), &pModeData->pfnRCGstGetPage);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPage), rc), rc);
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(ModifyPage), &pModeData->pfnRCGstModifyPage);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(ModifyPage), rc), rc);
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPDE), &pModeData->pfnRCGstGetPDE);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPDE), rc), rc);
#endif /* Not AMD64 shadow paging. */
}
/* Ring-0 */
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPage), &pModeData->pfnR0GstGetPage);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPage), rc), rc);
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(ModifyPage), &pModeData->pfnR0GstModifyPage);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(ModifyPage), rc), rc);
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPDE), &pModeData->pfnR0GstGetPDE);
AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPDE), rc), rc);
}
return VINF_SUCCESS;
}
/**
* Enters the guest mode.
*
* @returns VBox status code.
* @param pVCpu Pointer to the VMCPU.
* @param GCPhysCR3 The physical address from the CR3 register.
*/
PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3)
{
/*
* Map and monitor CR3
*/
int rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
return rc;
}
/**
* Relocate any GC pointers related to guest mode paging.
*
* @returns VBox status code.
* @param pVCpu Pointer to the VMCPU.
* @param offDelta The relocation offset.
*/
PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta)
{
pVCpu->pgm.s.pGst32BitPdRC += offDelta;
for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsRC); i++)
{
pVCpu->pgm.s.apGstPaePDsRC[i] += offDelta;
}
pVCpu->pgm.s.pGstPaePdptRC += offDelta;
return VINF_SUCCESS;
}
/**
* Exits the guest mode.
*
* @returns VBox status code.
* @param pVCpu Pointer to the VMCPU.
*/
PGM_GST_DECL(int, Exit)(PVMCPU pVCpu)
{
int rc;
rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
return rc;
}
|
