VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMR3/PGMGst.h@ 65697

Last change on this file since 65697 was 62478, checked in by vboxsync, 8 years ago

(C) 2016

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 5.0 KB
Line 
1/* $Id: PGMGst.h 62478 2016-07-22 18:29:06Z vboxsync $ */
2/** @file
3 * VBox - Page Manager / Monitor, Guest Paging Template.
4 */
5
6/*
7 * Copyright (C) 2006-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*******************************************************************************
20* Internal Functions *
21*******************************************************************************/
22RT_C_DECLS_BEGIN
23/* r3 */
24PGM_GST_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0);
25PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3);
26PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta);
27PGM_GST_DECL(int, Exit)(PVMCPU pVCpu);
28
29/* all */
30PGM_GST_DECL(int, GetPage)(PVMCPU pVCpu, RTGCPTR GCPtr, uint64_t *pfFlags, PRTGCPHYS pGCPhys);
31PGM_GST_DECL(int, ModifyPage)(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask);
32PGM_GST_DECL(int, GetPDE)(PVMCPU pVCpu, RTGCPTR GCPtr, PX86PDEPAE pPDE);
33RT_C_DECLS_END
34
35
36/**
37 * Initializes the guest bit of the paging mode data.
38 *
39 * @returns VBox status code.
40 * @param pVM The cross context VM structure.
41 * @param pModeData The pointer table to initialize (our members only).
42 * @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
43 * This is used early in the init process to avoid trouble with PDM
44 * not being initialized yet.
45 */
46PGM_GST_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0)
47{
48 Assert(pModeData->uGstType == PGM_GST_TYPE);
49
50 /* Ring-3 */
51 pModeData->pfnR3GstRelocate = PGM_GST_NAME(Relocate);
52 pModeData->pfnR3GstExit = PGM_GST_NAME(Exit);
53 pModeData->pfnR3GstGetPDE = PGM_GST_NAME(GetPDE);
54 pModeData->pfnR3GstGetPage = PGM_GST_NAME(GetPage);
55 pModeData->pfnR3GstModifyPage = PGM_GST_NAME(ModifyPage);
56
57 if (fResolveGCAndR0)
58 {
59 int rc;
60
61 if (!HMIsEnabled(pVM))
62 {
63#if PGM_SHW_TYPE != PGM_TYPE_AMD64 /* No AMD64 for traditional virtualization, only VT-x and AMD-V. */
64 /* RC */
65 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPage), &pModeData->pfnRCGstGetPage);
66 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPage), rc), rc);
67 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(ModifyPage), &pModeData->pfnRCGstModifyPage);
68 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(ModifyPage), rc), rc);
69 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPDE), &pModeData->pfnRCGstGetPDE);
70 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPDE), rc), rc);
71#endif /* Not AMD64 shadow paging. */
72 }
73
74 /* Ring-0 */
75 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPage), &pModeData->pfnR0GstGetPage);
76 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPage), rc), rc);
77 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(ModifyPage), &pModeData->pfnR0GstModifyPage);
78 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(ModifyPage), rc), rc);
79 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPDE), &pModeData->pfnR0GstGetPDE);
80 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPDE), rc), rc);
81 }
82
83 return VINF_SUCCESS;
84}
85
86
87/**
88 * Enters the guest mode.
89 *
90 * @returns VBox status code.
91 * @param pVCpu The cross context virtual CPU structure.
92 * @param GCPhysCR3 The physical address from the CR3 register.
93 */
94PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3)
95{
96 /*
97 * Map and monitor CR3
98 */
99 int rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
100 return rc;
101}
102
103
104/**
105 * Relocate any GC pointers related to guest mode paging.
106 *
107 * @returns VBox status code.
108 * @param pVCpu The cross context virtual CPU structure.
109 * @param offDelta The relocation offset.
110 */
111PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta)
112{
113 pVCpu->pgm.s.pGst32BitPdRC += offDelta;
114
115 for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsRC); i++)
116 {
117 pVCpu->pgm.s.apGstPaePDsRC[i] += offDelta;
118 }
119 pVCpu->pgm.s.pGstPaePdptRC += offDelta;
120
121 return VINF_SUCCESS;
122}
123
124
125/**
126 * Exits the guest mode.
127 *
128 * @returns VBox status code.
129 * @param pVCpu The cross context virtual CPU structure.
130 */
131PGM_GST_DECL(int, Exit)(PVMCPU pVCpu)
132{
133 int rc;
134
135 rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
136 return rc;
137}
138
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