/* $Id: TRPMInternal.h 4071 2007-08-07 17:07:59Z vboxsync $ */ /** @file * TRPM - 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 ___TRPMInternal_h #define ___TRPMInternal_h #include #include #include #include #if !defined(IN_TRPM_R3) && !defined(IN_TRPM_R0) && !defined(IN_TRPM_GC) # error "Not in TRPM! This is an internal header!" #endif /* Enable to allow trap forwarding in GC. */ #define TRPM_FORWARD_TRAPS_IN_GC /** First interrupt handler. Used for validating input. */ #define TRPM_HANDLER_INT_BASE 0x20 __BEGIN_DECLS /** @defgroup grp_trpm_int Internals * @ingroup grp_trpm * @internal * @{ */ /** @name TRPMGCTrapIn* flags. * The lower bits are offsets into the CPUMCTXCORE structure. * @{ */ /** The mask for the operation. */ #define TRPM_TRAP_IN_OP_MASK 0xffff /** Traps on MOV GS, eax. */ #define TRPM_TRAP_IN_MOV_GS 1 /** Traps on MOV FS, eax. */ #define TRPM_TRAP_IN_MOV_FS 2 /** Traps on MOV ES, eax. */ #define TRPM_TRAP_IN_MOV_ES 3 /** Traps on MOV DS, eax. */ #define TRPM_TRAP_IN_MOV_DS 4 /** Traps on IRET. */ #define TRPM_TRAP_IN_IRET 5 /** Set if this is a V86 resume. */ #define TRPM_TRAP_IN_V86 BIT(30) /** If set this is a hypervisor register set. If cleared it's a guest set. */ #define TRPM_TRAP_IN_HYPER BIT(31) /** @} */ /** * Converts a TRPM pointer into a VM pointer. * @returns Pointer to the VM structure the TRPM is part of. * @param pTRPM Pointer to TRPM instance data. */ #define TRPM2VM(pTRPM) ( (PVM)((char*)pTRPM - pTRPM->offVM) ) /** * TRPM Data (part of VM) * * IMPORTANT! Keep the nasm version of this struct up-to-date. */ #pragma pack(4) typedef struct TRPM { /** Offset to the VM structure. * See TRPM2VM(). */ RTINT offVM; /** Active Interrupt or trap vector number. * If not ~0U this indicates that we're currently processing * a interrupt, trap, fault, abort, whatever which have arrived * at that vector number. */ RTUINT uActiveVector; /** Active trap type. */ TRPMEVENT enmActiveType; /** Errorcode for the active interrupt/trap. */ RTGCUINT uActiveErrorCode; /** CR2 at the time of the active exception. */ RTGCUINTPTR uActiveCR2; /** Saved trap vector number. */ RTGCUINT uSavedVector; /** Saved trap type. */ TRPMEVENT enmSavedType; /** Saved errorcode. */ RTGCUINT uSavedErrorCode; /** Saved cr2. */ RTGCUINTPTR uSavedCR2; /** Previous trap vector # - for debugging. */ RTGCUINT uPrevVector; /** IDT monitoring and sync flag */ RTUINT fDisableMonitoring; /** @todo r=bird: bool and 7 byte achPadding1. */ /** Padding to get the IDTs at a 16 byte alignement. */ char achPadding1[4]; /** IDTs. Aligned at 16 byte offset for speed. */ VBOXIDTE aIdt[256]; /** Bitmap for IDTEs that contain PATM handlers. (needed for relocation) */ uint32_t au32IdtPatched[8]; /** Temporary Hypervisor trap handlers. * NULL means default action. */ RTGCPTR aTmpTrapHandlers[256]; /** GC Pointer to the IDT shadow area (aIdt) placed in Hypervisor memory arena. */ RTGCPTR GCPtrIdt; /** Current (last) Guest's IDTR. */ VBOXIDTR GuestIdtr; /** padding. */ uint8_t au8Padding[2]; /** Checked trap & interrupt handler array */ RTGCPTR aGuestTrapHandler[256]; /** GC: The number of times writes to the Guest IDT were detected. */ STAMCOUNTER StatGCWriteGuestIDTFault; STAMCOUNTER StatGCWriteGuestIDTHandled; /** HC: Profiling of the TRPMR3SyncIDT() method. */ STAMPROFILE StatSyncIDT; /** GC: Statistics for the trap handlers. */ STAMPROFILEADV aStatGCTraps[0x14]; STAMCOUNTER StatForwardFailNoHandler; STAMCOUNTER StatForwardFailPatchAddr; STAMCOUNTER StatForwardFailGC; STAMCOUNTER StatForwardFailHC; STAMPROFILEADV StatForwardProfGC; STAMPROFILEADV StatForwardProfHC; STAMPROFILEADV StatTrap0dDisasm; /* R3: Statistics for interrupt handlers (allocated on the hypervisor heap). */ R3PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR3; /* R0: Statistics for interrupt handlers (allocated on the hypervisor heap). */ R0PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR0; /* GC: Statistics for interrupt handlers (allocated on the hypervisor heap). */ GCPTRTYPE(PSTAMCOUNTER) paStatForwardedIRQGC; } TRPM; #pragma pack() /** Pointer to TRPM Data. */ typedef TRPM *PTRPM; TRPMGCDECL(int) trpmgcGuestIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); TRPMGCDECL(int) trpmgcShadowIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, void *pvRange, uintptr_t offRange); /** * Clear guest trap/interrupt gate handler * * @returns VBox status code. * @param pVM The VM to operate on. * @param iTrap Interrupt/trap number. */ TRPMDECL(int) trpmClearGuestTrapHandler(PVM pVM, unsigned iTrap); #ifdef IN_RING3 /** * Clear passthrough interrupt gate handler (reset to default handler) * * @returns VBox status code. * @param pVM The VM to operate on. * @param iTrap Trap/interrupt gate number. */ TRPMR3DECL(int) trpmR3ClearPassThroughHandler(PVM pVM, unsigned iTrap); #endif #ifdef IN_RING0 /** * Calls the interrupt gate as if we received an interrupt while in Ring-0. * * @param uIP The interrupt gate IP. * @param SelCS The interrupt gate CS. * @param RSP The interrupt gate RSP. ~0 if no stack switch should take place. (only AMD64) */ DECLASM(void) trpmR0DispatchHostInterrupt(RTR0UINTPTR uIP, RTSEL SelCS, RTR0UINTPTR RSP); /** * Issues a software interrupt to the specified interrupt vector. * * @param uActiveVector The vector number. */ DECLASM(void) trpmR0DispatchHostInterruptSimple(RTUINT uActiveVector); # ifndef VBOX_WITHOUT_IDT_PATCHING /** * Code used for the dispatching of interrupts in HC. * @internal */ DECLASM(int) trpmR0InterruptDispatcher(void); # endif /* !VBOX_WITHOUT_IDT_PATCHING */ #endif /** @} */ __END_DECLS #endif