/* $Id: TRPMInternal.h 76585 2019-01-01 06:31:29Z vboxsync $ */ /** @file * TRPM - Internal header file. */ /* * Copyright (C) 2006-2019 Oracle Corporation * * 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 (GPL) 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 VMM_INCLUDED_SRC_include_TRPMInternal_h #define VMM_INCLUDED_SRC_include_TRPMInternal_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include #include #include #include RT_C_DECLS_BEGIN /** @defgroup grp_trpm_int Internals * @ingroup grp_trpm * @internal * @{ */ #ifdef VBOX_WITH_RAW_MODE /** Enable or disable tracking of Guest's IDT. */ # define TRPM_TRACK_GUEST_IDT_CHANGES /** Enable or disable tracking of Shadow IDT. */ # define TRPM_TRACK_SHADOW_IDT_CHANGES #endif /** Enable to allow trap forwarding in GC. */ #ifdef VBOX_WITH_RAW_MODE # define TRPM_FORWARD_TRAPS_IN_GC #endif /** First interrupt handler. Used for validating input. */ #define TRPM_HANDLER_INT_BASE 0x20 /** @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 RT_BIT(30) /** @} */ #if 0 /* not used */ /** * 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 TRPM_2_VM(pTRPM) ( (PVM)((uint8_t *)(pTRPM) - (pTRPM)->offVM) ) #endif /** * Converts a TRPM pointer into a TRPMCPU pointer. * @returns Pointer to the VM structure the TRPMCPU is part of. * @param pTrpmCpu Pointer to TRPMCPU instance data. * @remarks Raw-mode only, not SMP safe. */ #define TRPM_2_TRPMCPU(pTrpmCpu) ( (PTRPMCPU)((uint8_t *)(pTrpmCpu) + (pTrpmCpu)->offTRPMCPU) ) /** * TRPM Data (part of VM) * * IMPORTANT! Keep the nasm version of this struct up-to-date. */ typedef struct TRPM { /** Offset to the VM structure. * See TRPM_2_VM(). */ RTINT offVM; /** Offset to the TRPMCPU structure. * See TRPM2TRPMCPU(). */ RTINT offTRPMCPU; /** Whether monitoring of the guest IDT is enabled or not. * * This configuration option is provided for speeding up guest like Solaris * that put the IDT on the same page as a whole lot of other data that is * frequently updated. The updates will cause \#PFs and have to be interpreted * by PGMInterpretInstruction which is slow compared to raw execution. * * If the guest is well behaved and doesn't change the IDT after loading it, * there is no problem with dropping the IDT monitoring. * * @cfgm{/TRPM/SafeToDropGuestIDTMonitoring, boolean, defaults to false.} */ bool fSafeToDropGuestIDTMonitoring; /** Padding to get the IDTs at a 16 byte alignment. */ uint8_t abPadding1[7]; /** 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. */ RCPTRTYPE(void *) aTmpTrapHandlers[256]; /** RC Pointer to the IDT shadow area (aIdt) in HMA. */ RCPTRTYPE(void *) pvMonShwIdtRC; /** padding. */ uint8_t au8Padding[2]; /** Current (last) Guest's IDTR. */ VBOXIDTR GuestIdtr; /** Shadow IDT virtual write access handler type. */ PGMVIRTHANDLERTYPE hShadowIdtWriteHandlerType; /** Guest IDT virtual write access handler type. */ PGMVIRTHANDLERTYPE hGuestIdtWriteHandlerType; /** Checked trap & interrupt handler array */ RCPTRTYPE(void *) aGuestTrapHandler[256]; /** RC: The number of times writes to the Guest IDT were detected. */ STAMCOUNTER StatRCWriteGuestIDTFault; STAMCOUNTER StatRCWriteGuestIDTHandled; /** HC: Profiling of the TRPMR3SyncIDT() method. */ STAMPROFILE StatSyncIDT; /** GC: Statistics for the trap handlers. */ STAMPROFILEADV aStatGCTraps[0x14]; STAMPROFILEADV StatForwardProfR3; STAMPROFILEADV StatForwardProfRZ; STAMCOUNTER StatForwardFailNoHandler; STAMCOUNTER StatForwardFailPatchAddr; STAMCOUNTER StatForwardFailR3; STAMCOUNTER StatForwardFailRZ; STAMPROFILE StatTrap0dDisasm; STAMCOUNTER StatTrap0dRdTsc; /**< Number of RDTSC \#GPs. */ #ifdef VBOX_WITH_STATISTICS /** Statistics for interrupt handlers (allocated on the hypervisor heap) - R3 * pointer. */ R3PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR3; /** Statistics for interrupt handlers - RC pointer. */ RCPTRTYPE(PSTAMCOUNTER) paStatForwardedIRQRC; /** Host interrupt statistics (allocated on the hypervisor heap) - RC ptr. */ RCPTRTYPE(PSTAMCOUNTER) paStatHostIrqRC; /** Host interrupt statistics (allocated on the hypervisor heap) - R3 ptr. */ R3PTRTYPE(PSTAMCOUNTER) paStatHostIrqR3; #endif } TRPM; AssertCompileMemberAlignment(TRPM, GuestIdtr.pIdt, 8); /** Pointer to TRPM Data. */ typedef TRPM *PTRPM; /** * Converts a TRPMCPU pointer into a VM pointer. * @returns Pointer to the VM structure the TRPMCPU is part of. * @param pTrpmCpu Pointer to TRPMCPU instance data. */ #define TRPMCPU_2_VM(pTrpmCpu) ( (PVM)((uint8_t *)(pTrpmCpu) - (pTrpmCpu)->offVM) ) /** * Converts a TRPMCPU pointer into a VMCPU pointer. * @returns Pointer to the VMCPU structure the TRPMCPU is part of. * @param pTrpmCpu Pointer to TRPMCPU instance data. */ #define TRPMCPU_2_VMCPU(pTrpmCpu) ( (PVMCPU)((uint8_t *)(pTrpmCpu) - (pTrpmCpu)->offVMCpu) ) /** * Per CPU data for TRPM. */ typedef struct TRPMCPU { /** Offset into the VM structure. * See TRPMCPU_2_VM(). */ uint32_t offVM; /** Offset into the VMCPU structure. * See TRPMCPU_2_VMCPU(). */ uint32_t offVMCpu; /** Active Interrupt or trap vector number. * If not UINT32_MAX this indicates that we're currently processing a * interrupt, trap, fault, abort, whatever which have arrived at that * vector number. */ uint32_t uActiveVector; /** Active trap type. */ TRPMEVENT enmActiveType; /** Errorcode for the active interrupt/trap. */ RTGCUINT uActiveErrorCode; /**< @todo don't use RTGCUINT */ /** CR2 at the time of the active exception. */ RTGCUINTPTR uActiveCR2; /** Saved trap vector number. */ RTGCUINT uSavedVector; /**< @todo don't use RTGCUINT */ /** Saved errorcode. */ RTGCUINT uSavedErrorCode; /** Saved cr2. */ RTGCUINTPTR uSavedCR2; /** Saved trap type. */ TRPMEVENT enmSavedType; /** Instruction length for software interrupts and software exceptions * (\#BP, \#OF) */ uint8_t cbInstr; /** Saved instruction length. */ uint8_t cbSavedInstr; /** Padding. */ uint8_t au8Padding[2]; /** Previous trap vector # - for debugging. */ RTGCUINT uPrevVector; } TRPMCPU; /** Pointer to TRPMCPU Data. */ typedef TRPMCPU *PTRPMCPU; PGM_ALL_CB2_PROTO(FNPGMVIRTHANDLER) trpmGuestIDTWriteHandler; DECLEXPORT(FNPGMRCVIRTPFHANDLER) trpmRCGuestIDTWritePfHandler; DECLEXPORT(FNPGMRCVIRTPFHANDLER) trpmRCShadowIDTWritePfHandler; /** * Clear guest trap/interrupt gate handler * * @returns VBox status code. * @param pVM The cross context VM structure. * @param iTrap Interrupt/trap number. */ VMMDECL(int) trpmClearGuestTrapHandler(PVM pVM, unsigned iTrap); #ifdef IN_RING3 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); #endif /* IN_RING0 */ /** @} */ RT_C_DECLS_END #endif /* !VMM_INCLUDED_SRC_include_TRPMInternal_h */