VirtualBox

source: vbox/trunk/src/VBox/VMM/PGMGst.h@ 30506

Last change on this file since 30506 was 28800, checked in by vboxsync, 15 years ago

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1/* $Id: PGMGst.h 28800 2010-04-27 08:22:32Z vboxsync $ */
2/** @file
3 * VBox - Page Manager / Monitor, Guest Paging Template.
4 */
5
6/*
7 * Copyright (C) 2006-2007 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 VM handle.
41 * @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now.
42 * This is used early in the init process to avoid trouble with PDM
43 * not being initialized yet.
44 */
45PGM_GST_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0)
46{
47 Assert(pModeData->uGstType == PGM_GST_TYPE);
48
49 /* Ring-3 */
50 pModeData->pfnR3GstRelocate = PGM_GST_NAME(Relocate);
51 pModeData->pfnR3GstExit = PGM_GST_NAME(Exit);
52 pModeData->pfnR3GstGetPDE = PGM_GST_NAME(GetPDE);
53 pModeData->pfnR3GstGetPage = PGM_GST_NAME(GetPage);
54 pModeData->pfnR3GstModifyPage = PGM_GST_NAME(ModifyPage);
55
56 if (fResolveGCAndR0)
57 {
58 int rc;
59
60#if PGM_SHW_TYPE != PGM_TYPE_AMD64 /* No AMD64 for traditional virtualization, only VT-x and AMD-V. */
61 /* GC */
62 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPage), &pModeData->pfnRCGstGetPage);
63 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPage), rc), rc);
64 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(ModifyPage), &pModeData->pfnRCGstModifyPage);
65 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(ModifyPage), rc), rc);
66 rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_GST_NAME_RC_STR(GetPDE), &pModeData->pfnRCGstGetPDE);
67 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_RC_STR(GetPDE), rc), rc);
68#endif /* Not AMD64 shadow paging. */
69
70 /* Ring-0 */
71 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPage), &pModeData->pfnR0GstGetPage);
72 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPage), rc), rc);
73 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(ModifyPage), &pModeData->pfnR0GstModifyPage);
74 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(ModifyPage), rc), rc);
75 rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_GST_NAME_R0_STR(GetPDE), &pModeData->pfnR0GstGetPDE);
76 AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_GST_NAME_R0_STR(GetPDE), rc), rc);
77 }
78
79 return VINF_SUCCESS;
80}
81
82
83/**
84 * Enters the guest mode.
85 *
86 * @returns VBox status code.
87 * @param pVCpu The VMCPU to operate on.
88 * @param GCPhysCR3 The physical address from the CR3 register.
89 */
90PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3)
91{
92 /*
93 * Map and monitor CR3
94 */
95 int rc = PGM_BTH_PFN(MapCR3, pVCpu)(pVCpu, GCPhysCR3);
96 return rc;
97}
98
99
100/**
101 * Relocate any GC pointers related to guest mode paging.
102 *
103 * @returns VBox status code.
104 * @param pVCpu The VMCPU to operate on.
105 * @param offDelta The reloation offset.
106 */
107PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta)
108{
109 pVCpu->pgm.s.pGst32BitPdRC += offDelta;
110
111 for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsRC); i++)
112 {
113 pVCpu->pgm.s.apGstPaePDsRC[i] += offDelta;
114 }
115 pVCpu->pgm.s.pGstPaePdptRC += offDelta;
116
117 return VINF_SUCCESS;
118}
119
120
121/**
122 * Exits the guest mode.
123 *
124 * @returns VBox status code.
125 * @param pVCpu The VMCPU to operate on.
126 */
127PGM_GST_DECL(int, Exit)(PVMCPU pVCpu)
128{
129 int rc;
130
131 rc = PGM_BTH_PFN(UnmapCR3, pVCpu)(pVCpu);
132 return rc;
133}
134
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