/** @file * EM - Execution Monitor. */ /* * Copyright (C) 2006-2015 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. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef ___VBox_vmm_em_h #define ___VBox_vmm_em_h #include #include RT_C_DECLS_BEGIN /** @defgroup grp_em The Execution Monitor / Manager API * @ingroup grp_vmm * @{ */ /** Enable to allow V86 code to run in raw mode. */ #define VBOX_RAW_V86 /** * The Execution Manager State. * * @remarks This is used in the saved state! */ typedef enum EMSTATE { /** Not yet started. */ EMSTATE_NONE = 1, /** Raw-mode execution. */ EMSTATE_RAW, /** Hardware accelerated raw-mode execution. */ EMSTATE_HM, /** Executing in IEM. */ EMSTATE_IEM, /** Recompiled mode execution. */ EMSTATE_REM, /** Execution is halted. (waiting for interrupt) */ EMSTATE_HALTED, /** Application processor execution is halted. (waiting for startup IPI (SIPI)) */ EMSTATE_WAIT_SIPI, /** Execution is suspended. */ EMSTATE_SUSPENDED, /** The VM is terminating. */ EMSTATE_TERMINATING, /** Guest debug event from raw-mode is being processed. */ EMSTATE_DEBUG_GUEST_RAW, /** Guest debug event from hardware accelerated mode is being processed. */ EMSTATE_DEBUG_GUEST_HM, /** Guest debug event from interpreted execution mode is being processed. */ EMSTATE_DEBUG_GUEST_IEM, /** Guest debug event from recompiled-mode is being processed. */ EMSTATE_DEBUG_GUEST_REM, /** Hypervisor debug event being processed. */ EMSTATE_DEBUG_HYPER, /** The VM has encountered a fatal error. (And everyone is panicing....) */ EMSTATE_GURU_MEDITATION, /** Executing in IEM, falling back on REM if we cannot switch back to HM or * RAW after a short while. */ EMSTATE_IEM_THEN_REM, /** Just a hack to ensure that we get a 32-bit integer. */ EMSTATE_MAKE_32BIT_HACK = 0x7fffffff } EMSTATE; /** * EMInterpretInstructionCPU execution modes. */ typedef enum { /** Only supervisor code (CPL=0). */ EMCODETYPE_SUPERVISOR, /** User-level code only. */ EMCODETYPE_USER, /** Supervisor and user-level code (use with great care!). */ EMCODETYPE_ALL, /** Just a hack to ensure that we get a 32-bit integer. */ EMCODETYPE_32BIT_HACK = 0x7fffffff } EMCODETYPE; VMM_INT_DECL(EMSTATE) EMGetState(PVMCPU pVCpu); VMM_INT_DECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState); /** @name Callback handlers for instruction emulation functions. * These are placed here because IOM wants to use them as well. * @{ */ typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM2UINT32(void *pvParam1, uint64_t val2); typedef FNEMULATEPARAM2UINT32 *PFNEMULATEPARAM2UINT32; typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM2(void *pvParam1, size_t val2); typedef FNEMULATEPARAM2 *PFNEMULATEPARAM2; typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM3(void *pvParam1, uint64_t val2, size_t val3); typedef FNEMULATEPARAM3 *PFNEMULATEPARAM3; typedef DECLCALLBACK(int) FNEMULATELOCKPARAM2(void *pvParam1, uint64_t val2, RTGCUINTREG32 *pf); typedef FNEMULATELOCKPARAM2 *PFNEMULATELOCKPARAM2; typedef DECLCALLBACK(int) FNEMULATELOCKPARAM3(void *pvParam1, uint64_t val2, size_t cb, RTGCUINTREG32 *pf); typedef FNEMULATELOCKPARAM3 *PFNEMULATELOCKPARAM3; /** @} */ /** * Checks if raw ring-3 execute mode is enabled. * * @returns true if enabled. * @returns false if disabled. * @param pVM The cross context VM structure. */ #define EMIsRawRing3Enabled(pVM) (!(pVM)->fRecompileUser) /** * Checks if raw ring-0 execute mode is enabled. * * @returns true if enabled. * @returns false if disabled. * @param pVM The cross context VM structure. */ #define EMIsRawRing0Enabled(pVM) (!(pVM)->fRecompileSupervisor) #ifdef VBOX_WITH_RAW_RING1 /** * Checks if raw ring-1 execute mode is enabled. * * @returns true if enabled. * @returns false if disabled. * @param pVM The cross context VM structure. */ # define EMIsRawRing1Enabled(pVM) ((pVM)->fRawRing1Enabled) #else # define EMIsRawRing1Enabled(pVM) false #endif /** * Checks if execution with hardware assisted virtualization is enabled. * * @returns true if enabled. * @returns false if disabled. * @param pVM The cross context VM structure. */ #define EMIsHwVirtExecutionEnabled(pVM) (!(pVM)->fRecompileSupervisor && !(pVM)->fRecompileUser) /** * Checks if execution of supervisor code should be done in the * recompiler or not. * * @returns true if enabled. * @returns false if disabled. * @param pVM The cross context VM structure. */ #define EMIsSupervisorCodeRecompiled(pVM) ((pVM)->fRecompileSupervisor) VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC); VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu); VMM_INT_DECL(int) EMInterpretDisasCurrent(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pCpu, unsigned *pcbInstr); VMM_INT_DECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore, PDISCPUSTATE pDISState, unsigned *pcbInstr); VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPU pVCpu, PCPUMCTXCORE pCoreCtx, RTGCPTR pvFault); VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionEx(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbWritten); VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pCoreCtx, RTGCPTR pvFault, EMCODETYPE enmCodeType); #ifdef IN_RC VMM_INT_DECL(int) EMInterpretIretV86ForPatm(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); #endif VMM_INT_DECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretRdtscp(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx); VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pAddrGC); VMM_INT_DECL(VBOXSTRICTRC) EMInterpretMWait(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretMonitor(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen); VMM_INT_DECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx); VMM_INT_DECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame); VMM_INT_DECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx); VMM_INT_DECL(bool) EMMonitorWaitShouldContinue(PVMCPU pVCpu, PCPUMCTX pCtx); VMM_INT_DECL(int) EMMonitorWaitPrepare(PVMCPU pVCpu, uint64_t rax, uint64_t rcx, uint64_t rdx, RTGCPHYS GCPhys); VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx); /** @name Assembly routines * @{ */ VMMDECL(uint32_t) EMEmulateCmp(uint32_t u32Param1, uint64_t u64Param2, size_t cb); VMMDECL(uint32_t) EMEmulateAnd(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(uint32_t) EMEmulateInc(void *pvParam1, size_t cb); VMMDECL(uint32_t) EMEmulateDec(void *pvParam1, size_t cb); VMMDECL(uint32_t) EMEmulateOr(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(int) EMEmulateLockOr(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf); VMMDECL(uint32_t) EMEmulateXor(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(int) EMEmulateLockXor(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf); VMMDECL(uint32_t) EMEmulateAdd(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(int) EMEmulateLockAnd(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf); VMMDECL(uint32_t) EMEmulateSub(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(uint32_t) EMEmulateAdcWithCarrySet(void *pvParam1, uint64_t u64Param2, size_t cb); VMMDECL(uint32_t) EMEmulateBtr(void *pvParam1, uint64_t u64Param2); VMMDECL(int) EMEmulateLockBtr(void *pvParam1, uint64_t u64Param2, RTGCUINTREG32 *pf); VMMDECL(uint32_t) EMEmulateBts(void *pvParam1, uint64_t u64Param2); VMMDECL(uint32_t) EMEmulateBtc(void *pvParam1, uint64_t u64Param2); VMMDECL(uint32_t) EMEmulateCmpXchg(void *pvParam1, uint64_t *pu32Param2, uint64_t u32Param3, size_t cbSize); VMMDECL(uint32_t) EMEmulateLockCmpXchg(void *pvParam1, uint64_t *pu64Param2, uint64_t u64Param3, size_t cbSize); VMMDECL(uint32_t) EMEmulateCmpXchg8b(void *pu32Param1, uint32_t *pEAX, uint32_t *pEDX, uint32_t uEBX, uint32_t uECX); VMMDECL(uint32_t) EMEmulateLockCmpXchg8b(void *pu32Param1, uint32_t *pEAX, uint32_t *pEDX, uint32_t uEBX, uint32_t uECX); VMMDECL(uint32_t) EMEmulateXAdd(void *pvParam1, void *pvParam2, size_t cbOp); VMMDECL(uint32_t) EMEmulateLockXAdd(void *pvParam1, void *pvParam2, size_t cbOp); /** @} */ /** @name REM locking routines * @{ */ VMMDECL(void) EMRemUnlock(PVM pVM); VMMDECL(void) EMRemLock(PVM pVM); VMMDECL(bool) EMRemIsLockOwner(PVM pVM); VMM_INT_DECL(int) EMRemTryLock(PVM pVM); /** @} */ /** @name EM_ONE_INS_FLAGS_XXX - flags for EMR3HmSingleInstruction (et al). * @{ */ /** Return when CS:RIP changes or some other important event happens. * This means running whole REP and LOOP $ sequences for instance. */ #define EM_ONE_INS_FLAGS_RIP_CHANGE RT_BIT_32(0) /** Mask of valid flags. */ #define EM_ONE_INS_FLAGS_MASK UINT32_C(0x00000001) /** @} */ #ifdef IN_RING3 /** @defgroup grp_em_r3 The EM Host Context Ring-3 API * @{ */ /** * Command argument for EMR3RawSetMode(). * * It's possible to extend this interface to change several * execution modes at once should the need arise. */ typedef enum EMEXECPOLICY { /** The customary invalid zero entry. */ EMEXECPOLICY_INVALID = 0, /** Whether to recompile ring-0 code or execute it in raw/hm. */ EMEXECPOLICY_RECOMPILE_RING0, /** Whether to recompile ring-3 code or execute it in raw/hm. */ EMEXECPOLICY_RECOMPILE_RING3, /** Whether to only use IEM for execution. */ EMEXECPOLICY_IEM_ALL, /** End of valid value (not included). */ EMEXECPOLICY_END, /** The customary 32-bit type blowup. */ EMEXECPOLICY_32BIT_HACK = 0x7fffffff } EMEXECPOLICY; VMMR3DECL(int) EMR3SetExecutionPolicy(PUVM pUVM, EMEXECPOLICY enmPolicy, bool fEnforce); VMMR3DECL(int) EMR3QueryExecutionPolicy(PUVM pUVM, EMEXECPOLICY enmPolicy, bool *pfEnforced); VMMR3_INT_DECL(int) EMR3Init(PVM pVM); VMMR3_INT_DECL(void) EMR3Relocate(PVM pVM); VMMR3_INT_DECL(void) EMR3ResetCpu(PVMCPU pVCpu); VMMR3_INT_DECL(void) EMR3Reset(PVM pVM); VMMR3_INT_DECL(int) EMR3Term(PVM pVM); VMMR3DECL(DECLNORETURN(void)) EMR3FatalError(PVMCPU pVCpu, int rc); VMMR3_INT_DECL(int) EMR3ExecuteVM(PVM pVM, PVMCPU pVCpu); VMMR3_INT_DECL(int) EMR3CheckRawForcedActions(PVM pVM, PVMCPU pVCpu); VMMR3_INT_DECL(int) EMR3NotifyResume(PVM pVM); VMMR3_INT_DECL(int) EMR3NotifySuspend(PVM pVM); VMMR3_INT_DECL(VBOXSTRICTRC) EMR3HmSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags); /** @} */ #endif /* IN_RING3 */ /** @} */ RT_C_DECLS_END #endif