/* $Id: SELMInternal.h 4776 2007-09-13 15:29:33Z vboxsync $ */ /** @file * SELM - Internal header file. */ /* * Copyright (C) 2006-2007 innotek GmbH * * 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 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. */ #ifndef ___SELMInternal_h #define ___SELMInternal_h #include #include #include #include #if !defined(IN_SELM_R3) && !defined(IN_SELM_R0) && !defined(IN_SELM_GC) # error "Not in SELM! This is an internal header!" #endif /** @defgroup grp_selm_int Internals * @ingroup grp_selm * @internal * @{ */ /** The number of GDTS allocated for our GDT. (full size) */ #define SELM_GDT_ELEMENTS 8192 /** aHyperSel index to retrieve hypervisor selectors */ /** The Flat CS selector used by the VMM inside the GC. */ #define SELM_HYPER_SEL_CS 0 /** The Flat DS selector used by the VMM inside the GC. */ #define SELM_HYPER_SEL_DS 1 /** The 64-bit mode CS selector used by the VMM inside the GC. */ #define SELM_HYPER_SEL_CS64 2 /** The TSS selector used by the VMM inside the GC. */ #define SELM_HYPER_SEL_TSS 3 /** The TSS selector for taking trap 08 (\#DF). */ #define SELM_HYPER_SEL_TSS_TRAP08 4 /** Number of GDTs we need for internal use */ #define SELM_HYPER_SEL_MAX (SELM_HYPER_SEL_TSS_TRAP08 + 1) /** Default GDT selectors we use for the hypervisor. */ #define SELM_HYPER_DEFAULT_SEL_CS ((SELM_GDT_ELEMENTS - 0x1) << 3) #define SELM_HYPER_DEFAULT_SEL_DS ((SELM_GDT_ELEMENTS - 0x2) << 3) #define SELM_HYPER_DEFAULT_SEL_CS64 ((SELM_GDT_ELEMENTS - 0x3) << 3) #define SELM_HYPER_DEFAULT_SEL_TSS ((SELM_GDT_ELEMENTS - 0x4) << 3) #define SELM_HYPER_DEFAULT_SEL_TSS_TRAP08 ((SELM_GDT_ELEMENTS - 0x5) << 3) /** The lowest value default we use. */ #define SELM_HYPER_DEFAULT_BASE SELM_HYPER_DEFAULT_SEL_TSS_TRAP08 /** * Converts a SELM pointer into a VM pointer. * @returns Pointer to the VM structure the SELM is part of. * @param pSELM Pointer to SELM instance data. */ #define SELM2VM(pSELM) ( (PVM)((char*)pSELM - pSELM->offVM) ) /** * SELM Data (part of VM) */ typedef struct SELM { /** Offset to the VM structure. * See SELM2VM(). */ RTINT offVM; /* Flat CS, DS, 64 bit mode CS, TSS & trap 8 TSS. */ RTSEL aHyperSel[SELM_HYPER_SEL_MAX]; /** Pointer to the GCs - HC Ptr. * This size is governed by SELM_GDT_ELEMENTS. */ R3R0PTRTYPE(PVBOXDESC) paGdtHC; /** Pointer to the GCs - GC Ptr. * This is not initialized until the first relocation because it's used to * check if the shadow GDT virtual handler requires deregistration. */ GCPTRTYPE(PVBOXDESC) paGdtGC; /** Current (last) Guest's GDTR. */ VBOXGDTR GuestGdtr; /** The current (last) effective Guest GDT size. */ RTUINT cbEffGuestGdtLimit; /** HC Pointer to the LDT shadow area placed in Hypervisor memory arena. */ R3PTRTYPE(void *) HCPtrLdt; /** GC Pointer to the LDT shadow area placed in Hypervisor memory arena. */ GCPTRTYPE(void *) GCPtrLdt; /** GC Pointer to the current Guest's LDT. */ RTGCPTR GCPtrGuestLdt; /** Current LDT limit, both Guest and Shadow. */ RTUINT cbLdtLimit; /** Current LDT offset relative to pvLdt*. */ RTUINT offLdtHyper; #if HC_ARCH_BITS == 32 /** TSS alignment padding. */ RTUINT auPadding[2]; #endif /** TSS. (This is 16 byte aligned!) * @todo I/O bitmap & interrupt redirection table? */ VBOXTSS Tss; /** TSS for trap 08 (\#DF). */ VBOXTSS TssTrap08; /** GC Pointer to the TSS shadow area (Tss) placed in Hypervisor memory arena. */ RTGCPTR GCPtrTss; /** GC Pointer to the current Guest's TSS. */ RTGCPTR GCPtrGuestTss; /** The size of the guest TSS. */ RTUINT cbGuestTss; /** Set if it's a 32-bit TSS. */ bool fGuestTss32Bit; /** The size of the Guest's TSS part we're monitoring. */ RTUINT cbMonitoredGuestTss; /** GC shadow TSS selector */ RTSEL GCSelTss; /** Indicates that the Guest GDT access handler have been registered. */ bool fGDTRangeRegistered; /** Indicates whether LDT/GDT/TSS monitoring and syncing is disabled. */ bool fDisableMonitoring; /** Indicates whether the TSS stack selector & base address need to be refreshed. */ bool fSyncTSSRing0Stack; /** alignment . */ RTUINT uPadding2; /** SELMR3UpdateFromCPUM() profiling. */ STAMPROFILE StatUpdateFromCPUM; /** SELMR3SyncTSS() profiling. */ STAMPROFILE StatTSSSync; /** GC: The number of handled writes to the Guest's GDT. */ STAMCOUNTER StatGCWriteGuestGDTHandled; /** GC: The number of unhandled write to the Guest's GDT. */ STAMCOUNTER StatGCWriteGuestGDTUnhandled; /** GC: The number of times writes to Guest's LDT was detected. */ STAMCOUNTER StatGCWriteGuestLDT; /** GC: The number of handled writes to the Guest's TSS. */ STAMCOUNTER StatGCWriteGuestTSSHandled; /** GC: The number of handled writes to the Guest's TSS where we detected a change. */ STAMCOUNTER StatGCWriteGuestTSSHandledChanged; /** GC: The number of handled redir writes to the Guest's TSS where we detected a change. */ STAMCOUNTER StatGCWriteGuestTSSRedir; /** GC: The number of unhandled writes to the Guest's TSS. */ STAMCOUNTER StatGCWriteGuestTSSUnhandled; /** The number of times we had to relocate our hypervisor selectors. */ STAMCOUNTER StatHyperSelsChanged; /** The number of times we had find free hypervisor selectors. */ STAMCOUNTER StatScanForHyperSels; } SELM, *PSELM; __BEGIN_DECLS SELMGCDECL(int) selmgcGuestGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); SELMGCDECL(int) selmgcGuestLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); SELMGCDECL(int) selmgcGuestTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); SELMGCDECL(int) selmgcShadowGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); SELMGCDECL(int) selmgcShadowLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); SELMGCDECL(int) selmgcShadowTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); __END_DECLS #ifdef IN_RING3 #endif /** @} */ #endif