| 1 | /* $Id: PGMGst.h 73250 2018-07-19 17:57:31Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox - Page Manager / Monitor, Guest Paging Template.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2017 Oracle Corporation
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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 |
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| 18 |
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| 19 | /*******************************************************************************
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| 20 | * Internal Functions *
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| 21 | *******************************************************************************/
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| 22 | RT_C_DECLS_BEGIN
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| 23 | /* r3 */
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| 24 | PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3);
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| 25 | PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta);
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| 26 | PGM_GST_DECL(int, Exit)(PVMCPU pVCpu);
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| 27 |
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| 28 | /* all */
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| 29 | PGM_GST_DECL(int, GetPage)(PVMCPU pVCpu, RTGCPTR GCPtr, uint64_t *pfFlags, PRTGCPHYS pGCPhys);
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| 30 | PGM_GST_DECL(int, ModifyPage)(PVMCPU pVCpu, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask);
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| 31 | PGM_GST_DECL(int, GetPDE)(PVMCPU pVCpu, RTGCPTR GCPtr, PX86PDEPAE pPDE);
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| 32 | RT_C_DECLS_END
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| 33 |
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| 34 |
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| 35 | /**
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| 36 | * Enters the guest mode.
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| 37 | *
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| 38 | * @returns VBox status code.
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| 39 | * @param pVCpu The cross context virtual CPU structure.
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| 40 | * @param GCPhysCR3 The physical address from the CR3 register.
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| 41 | */
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| 42 | PGM_GST_DECL(int, Enter)(PVMCPU pVCpu, RTGCPHYS GCPhysCR3)
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| 43 | {
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| 44 | /*
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| 45 | * Map and monitor CR3
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| 46 | */
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| 47 | uintptr_t idxBth = pVCpu->pgm.s.idxBothModeData;
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| 48 | AssertReturn(idxBth < RT_ELEMENTS(g_aPgmBothModeData), VERR_PGM_MODE_IPE);
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| 49 | AssertReturn(g_aPgmBothModeData[idxBth].pfnMapCR3, VERR_PGM_MODE_IPE);
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| 50 | return g_aPgmBothModeData[idxBth].pfnMapCR3(pVCpu, GCPhysCR3);
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| 51 | }
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| 52 |
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| 53 |
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| 54 | /**
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| 55 | * Relocate any GC pointers related to guest mode paging.
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| 56 | *
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| 57 | * @returns VBox status code.
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| 58 | * @param pVCpu The cross context virtual CPU structure.
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| 59 | * @param offDelta The relocation offset.
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| 60 | */
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| 61 | PGM_GST_DECL(int, Relocate)(PVMCPU pVCpu, RTGCPTR offDelta)
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| 62 | {
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| 63 | pVCpu->pgm.s.pGst32BitPdRC += offDelta;
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| 64 |
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| 65 | for (unsigned i = 0; i < RT_ELEMENTS(pVCpu->pgm.s.apGstPaePDsRC); i++)
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| 66 | {
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| 67 | pVCpu->pgm.s.apGstPaePDsRC[i] += offDelta;
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| 68 | }
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| 69 | pVCpu->pgm.s.pGstPaePdptRC += offDelta;
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| 70 |
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| 71 | return VINF_SUCCESS;
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| 72 | }
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| 73 |
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| 74 |
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| 75 | /**
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| 76 | * Exits the guest mode.
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| 77 | *
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| 78 | * @returns VBox status code.
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| 79 | * @param pVCpu The cross context virtual CPU structure.
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| 80 | */
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| 81 | PGM_GST_DECL(int, Exit)(PVMCPU pVCpu)
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| 82 | {
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| 83 | uintptr_t idxBth = pVCpu->pgm.s.idxBothModeData;
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| 84 | AssertReturn(idxBth < RT_ELEMENTS(g_aPgmBothModeData), VERR_PGM_MODE_IPE);
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| 85 | AssertReturn(g_aPgmBothModeData[idxBth].pfnUnmapCR3, VERR_PGM_MODE_IPE);
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| 86 | return g_aPgmBothModeData[idxBth].pfnUnmapCR3(pVCpu);
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| 87 | }
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| 88 |
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