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Diffstat (limited to 'include/VBox/vmm/em.h')
| -rw-r--r-- | include/VBox/vmm/em.h | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/include/VBox/vmm/em.h b/include/VBox/vmm/em.h new file mode 100644 index 00000000..34ef0de5 --- /dev/null +++ b/include/VBox/vmm/em.h @@ -0,0 +1,345 @@ +/** @file + * EM - Execution Monitor. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program 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 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef VBOX_INCLUDED_vmm_em_h +#define VBOX_INCLUDED_vmm_em_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <VBox/types.h> +#include <VBox/vmm/trpm.h> +#include <VBox/vmm/vmapi.h> + + +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, + /** Executing in native (API) execution monitor. */ + EMSTATE_NEM, + /** Guest debug event from NEM mode is being processed. */ + EMSTATE_DEBUG_GUEST_NEM, + /** 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 DECLCALLBACKTYPE(uint32_t, FNEMULATEPARAM2UINT32,(void *pvParam1, uint64_t val2)); +typedef FNEMULATEPARAM2UINT32 *PFNEMULATEPARAM2UINT32; +typedef DECLCALLBACKTYPE(uint32_t, FNEMULATEPARAM2,(void *pvParam1, size_t val2)); +typedef FNEMULATEPARAM2 *PFNEMULATEPARAM2; +typedef DECLCALLBACKTYPE(uint32_t, FNEMULATEPARAM3,(void *pvParam1, uint64_t val2, size_t val3)); +typedef FNEMULATEPARAM3 *PFNEMULATEPARAM3; +typedef DECLCALLBACKTYPE(int, FNEMULATELOCKPARAM2,(void *pvParam1, uint64_t val2, RTGCUINTREG32 *pf)); +typedef FNEMULATELOCKPARAM2 *PFNEMULATELOCKPARAM2; +typedef DECLCALLBACKTYPE(int, FNEMULATELOCKPARAM3,(void *pvParam1, uint64_t val2, size_t cb, RTGCUINTREG32 *pf)); +typedef FNEMULATELOCKPARAM3 *PFNEMULATELOCKPARAM3; +/** @} */ + +VMMDECL(void) EMSetHypercallInstructionsEnabled(PVMCPU pVCpu, bool fEnabled); +VMMDECL(bool) EMAreHypercallInstructionsEnabled(PVMCPU pVCpu); +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(void) EMMonitorWaitClear(PVMCPU pVCpu); +VMM_INT_DECL(bool) EMMonitorIsArmed(PVMCPU pVCpu); +VMM_INT_DECL(unsigned) EMMonitorWaitIsActive(PVMCPU pVCpu); +VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx); +VMM_INT_DECL(int) EMUnhaltAndWakeUp(PVMCC pVM, PVMCPUCC pVCpuDst); +VMMRZ_INT_DECL(VBOXSTRICTRC) EMRZSetPendingIoPortWrite(PVMCPU pVCpu, RTIOPORT uPort, uint8_t cbInstr, uint8_t cbValue, uint32_t uValue); +VMMRZ_INT_DECL(VBOXSTRICTRC) EMRZSetPendingIoPortRead(PVMCPU pVCpu, RTIOPORT uPort, uint8_t cbInstr, uint8_t cbValue); + +/** + * Common defined exit types that EM knows what to do about. + * + * These should be used instead of the VT-x, SVM or NEM specific ones for exits + * worth optimizing. + */ +typedef enum EMEXITTYPE +{ + EMEXITTYPE_INVALID = 0, + EMEXITTYPE_IO_PORT_READ, + EMEXITTYPE_IO_PORT_WRITE, + EMEXITTYPE_IO_PORT_STR_READ, + EMEXITTYPE_IO_PORT_STR_WRITE, + EMEXITTYPE_MMIO, + EMEXITTYPE_MMIO_READ, + EMEXITTYPE_MMIO_WRITE, + EMEXITTYPE_MSR_READ, + EMEXITTYPE_MSR_WRITE, + EMEXITTYPE_CPUID, + EMEXITTYPE_RDTSC, + EMEXITTYPE_MOV_CRX, + EMEXITTYPE_MOV_DRX, + EMEXITTYPE_VMREAD, + EMEXITTYPE_VMWRITE, + + /** @name Raw-mode only (for now), keep at end. + * @{ */ + EMEXITTYPE_INVLPG, + EMEXITTYPE_LLDT, + EMEXITTYPE_RDPMC, + EMEXITTYPE_CLTS, + EMEXITTYPE_STI, + EMEXITTYPE_INT, + EMEXITTYPE_SYSCALL, + EMEXITTYPE_SYSENTER, + EMEXITTYPE_HLT + /** @} */ +} EMEXITTYPE; +AssertCompileSize(EMEXITTYPE, 4); + +/** @name EMEXIT_F_XXX - EM exit flags. + * + * The flags the exit type are combined to a 32-bit number using the + * EMEXIT_MAKE_FT() macro. + * + * @{ */ +#define EMEXIT_F_TYPE_MASK UINT32_C(0x00000fff) /**< The exit type mask. */ +#define EMEXIT_F_KIND_EM UINT32_C(0x00000000) /**< EMEXITTYPE */ +#define EMEXIT_F_KIND_VMX UINT32_C(0x00001000) /**< VT-x exit codes. */ +#define EMEXIT_F_KIND_SVM UINT32_C(0x00002000) /**< SVM exit codes. */ +#define EMEXIT_F_KIND_NEM UINT32_C(0x00003000) /**< NEMEXITTYPE */ +#define EMEXIT_F_KIND_XCPT UINT32_C(0x00004000) /**< Exception numbers (raw-mode). */ +#define EMEXIT_F_KIND_MASK UINT32_C(0x00007000) +#define EMEXIT_F_CS_EIP UINT32_C(0x00010000) /**< The PC is EIP in the low dword and CS in the high. */ +#define EMEXIT_F_UNFLATTENED_PC UINT32_C(0x00020000) /**< The PC hasn't had CS.BASE added to it. */ +/** HM is calling (from ring-0). Preemption is currently disabled or we're using preemption hooks. */ +#define EMEXIT_F_HM UINT32_C(0x00040000) +/** Combines flags and exit type into EMHistoryAddExit() input. */ +#define EMEXIT_MAKE_FT(a_fFlags, a_uType) ((a_fFlags) | (uint32_t)(a_uType)) +/** @} */ + +typedef enum EMEXITACTION +{ + /** The record is free. */ + EMEXITACTION_FREE_RECORD = 0, + /** Take normal action on the exit. */ + EMEXITACTION_NORMAL, + /** Take normal action on the exit, already probed and found nothing. */ + EMEXITACTION_NORMAL_PROBED, + /** Do a probe execution. */ + EMEXITACTION_EXEC_PROBE, + /** Execute using EMEXITREC::cMaxInstructionsWithoutExit. */ + EMEXITACTION_EXEC_WITH_MAX +} EMEXITACTION; +AssertCompileSize(EMEXITACTION, 4); + +/** + * Accumulative exit record. + * + * This could perhaps be squeezed down a bit, but there isn't too much point. + * We'll probably need more data as time goes by. + */ +typedef struct EMEXITREC +{ + /** The flat PC of the exit. */ + uint64_t uFlatPC; + /** Flags and type, see EMEXIT_MAKE_FT. */ + uint32_t uFlagsAndType; + /** The action to take (EMEXITACTION). */ + uint8_t enmAction; + uint8_t bUnused; + /** Maximum number of instructions to execute without hitting an exit. */ + uint16_t cMaxInstructionsWithoutExit; + /** The exit number (EMCPU::iNextExit) at which it was last updated. */ + uint64_t uLastExitNo; + /** Number of hits. */ + uint64_t cHits; +} EMEXITREC; +AssertCompileSize(EMEXITREC, 32); +/** Pointer to an accumulative exit record. */ +typedef EMEXITREC *PEMEXITREC; +/** Pointer to a const accumulative exit record. */ +typedef EMEXITREC const *PCEMEXITREC; + +VMM_INT_DECL(PCEMEXITREC) EMHistoryAddExit(PVMCPUCC pVCpu, uint32_t uFlagsAndType, uint64_t uFlatPC, uint64_t uTimestamp); +#ifdef IN_RC +VMMRC_INT_DECL(void) EMRCHistoryAddExitCsEip(PVMCPU pVCpu, uint32_t uFlagsAndType, uint16_t uCs, uint32_t uEip, + uint64_t uTimestamp); +#endif +VMM_INT_DECL(void) EMHistoryUpdatePC(PVMCPUCC pVCpu, uint64_t uFlatPC, bool fFlattened); +VMM_INT_DECL(PCEMEXITREC) EMHistoryUpdateFlagsAndType(PVMCPUCC pVCpu, uint32_t uFlagsAndType); +VMM_INT_DECL(PCEMEXITREC) EMHistoryUpdateFlagsAndTypeAndPC(PVMCPUCC pVCpu, uint32_t uFlagsAndType, uint64_t uFlatPC); +VMM_INT_DECL(VBOXSTRICTRC) EMHistoryExec(PVMCPUCC pVCpu, PCEMEXITREC pExitRec, uint32_t fWillExit); + + +/** @name Deprecated interpretation related APIs (use IEM). + * @{ */ +VMM_INT_DECL(int) EMInterpretDisasCurrent(PVMCPUCC pVCpu, PDISCPUSTATE pCpu, unsigned *pcbInstr); +VMM_INT_DECL(int) EMInterpretDisasOneEx(PVMCPUCC pVCpu, RTGCUINTPTR GCPtrInstr, + PDISCPUSTATE pDISState, unsigned *pcbInstr); +VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPUCC pVCpu); +VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPUCC pVCpu, PDISCPUSTATE pDis, uint64_t rip); +/** @} */ + + +/** @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_RING0 +/** @defgroup grp_em_r0 The EM Host Context Ring-0 API + * @{ */ +VMMR0_INT_DECL(int) EMR0InitVM(PGVM pGVM); +/** @} */ +#endif + + +#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); +VMMR3DECL(int) EMR3QueryMainExecutionEngine(PUVM pUVM, uint8_t *pbMainExecutionEngine); + +VMMR3_INT_DECL(int) EMR3Init(PVM pVM); +VMMR3_INT_DECL(int) EMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat); +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(DECL_NO_RETURN(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(VBOXSTRICTRC) EMR3HmSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags); + +/** @} */ +#endif /* IN_RING3 */ + +/** @} */ + +RT_C_DECLS_END + +#endif /* !VBOX_INCLUDED_vmm_em_h */ + |