VirtualBox

source: vbox/trunk/include/VBox/vmm/em.h@ 72490

Last change on this file since 72490 was 72490, checked in by vboxsync, 6 years ago

NEM,EM: Generic optimization of I/O port accesses that have to be executed in ring-3. Only NEM uses the feature for now. bugref:9044 bugref:9193

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1/** @file
2 * EM - Execution Monitor.
3 */
4
5/*
6 * Copyright (C) 2006-2017 Oracle Corporation
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 */
25
26#ifndef ___VBox_vmm_em_h
27#define ___VBox_vmm_em_h
28
29#include <VBox/types.h>
30#include <VBox/vmm/trpm.h>
31
32
33RT_C_DECLS_BEGIN
34
35/** @defgroup grp_em The Execution Monitor / Manager API
36 * @ingroup grp_vmm
37 * @{
38 */
39
40/** Enable to allow V86 code to run in raw mode. */
41#define VBOX_RAW_V86
42
43/**
44 * The Execution Manager State.
45 *
46 * @remarks This is used in the saved state!
47 */
48typedef enum EMSTATE
49{
50 /** Not yet started. */
51 EMSTATE_NONE = 1,
52 /** Raw-mode execution. */
53 EMSTATE_RAW,
54 /** Hardware accelerated raw-mode execution. */
55 EMSTATE_HM,
56 /** Executing in IEM. */
57 EMSTATE_IEM,
58 /** Recompiled mode execution. */
59 EMSTATE_REM,
60 /** Execution is halted. (waiting for interrupt) */
61 EMSTATE_HALTED,
62 /** Application processor execution is halted. (waiting for startup IPI (SIPI)) */
63 EMSTATE_WAIT_SIPI,
64 /** Execution is suspended. */
65 EMSTATE_SUSPENDED,
66 /** The VM is terminating. */
67 EMSTATE_TERMINATING,
68 /** Guest debug event from raw-mode is being processed. */
69 EMSTATE_DEBUG_GUEST_RAW,
70 /** Guest debug event from hardware accelerated mode is being processed. */
71 EMSTATE_DEBUG_GUEST_HM,
72 /** Guest debug event from interpreted execution mode is being processed. */
73 EMSTATE_DEBUG_GUEST_IEM,
74 /** Guest debug event from recompiled-mode is being processed. */
75 EMSTATE_DEBUG_GUEST_REM,
76 /** Hypervisor debug event being processed. */
77 EMSTATE_DEBUG_HYPER,
78 /** The VM has encountered a fatal error. (And everyone is panicing....) */
79 EMSTATE_GURU_MEDITATION,
80 /** Executing in IEM, falling back on REM if we cannot switch back to HM or
81 * RAW after a short while. */
82 EMSTATE_IEM_THEN_REM,
83 /** Executing in native (API) execution monitor. */
84 EMSTATE_NEM,
85 /** Guest debug event from NEM mode is being processed. */
86 EMSTATE_DEBUG_GUEST_NEM,
87 /** Just a hack to ensure that we get a 32-bit integer. */
88 EMSTATE_MAKE_32BIT_HACK = 0x7fffffff
89} EMSTATE;
90
91
92/**
93 * EMInterpretInstructionCPU execution modes.
94 */
95typedef enum
96{
97 /** Only supervisor code (CPL=0). */
98 EMCODETYPE_SUPERVISOR,
99 /** User-level code only. */
100 EMCODETYPE_USER,
101 /** Supervisor and user-level code (use with great care!). */
102 EMCODETYPE_ALL,
103 /** Just a hack to ensure that we get a 32-bit integer. */
104 EMCODETYPE_32BIT_HACK = 0x7fffffff
105} EMCODETYPE;
106
107VMM_INT_DECL(EMSTATE) EMGetState(PVMCPU pVCpu);
108VMM_INT_DECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState);
109
110/** @name Callback handlers for instruction emulation functions.
111 * These are placed here because IOM wants to use them as well.
112 * @{
113 */
114typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM2UINT32(void *pvParam1, uint64_t val2);
115typedef FNEMULATEPARAM2UINT32 *PFNEMULATEPARAM2UINT32;
116typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM2(void *pvParam1, size_t val2);
117typedef FNEMULATEPARAM2 *PFNEMULATEPARAM2;
118typedef DECLCALLBACK(uint32_t) FNEMULATEPARAM3(void *pvParam1, uint64_t val2, size_t val3);
119typedef FNEMULATEPARAM3 *PFNEMULATEPARAM3;
120typedef DECLCALLBACK(int) FNEMULATELOCKPARAM2(void *pvParam1, uint64_t val2, RTGCUINTREG32 *pf);
121typedef FNEMULATELOCKPARAM2 *PFNEMULATELOCKPARAM2;
122typedef DECLCALLBACK(int) FNEMULATELOCKPARAM3(void *pvParam1, uint64_t val2, size_t cb, RTGCUINTREG32 *pf);
123typedef FNEMULATELOCKPARAM3 *PFNEMULATELOCKPARAM3;
124/** @} */
125
126
127/**
128 * Checks if raw ring-3 execute mode is enabled.
129 *
130 * @returns true if enabled.
131 * @returns false if disabled.
132 * @param pVM The cross context VM structure.
133 */
134#define EMIsRawRing3Enabled(pVM) (!(pVM)->fRecompileUser)
135
136/**
137 * Checks if raw ring-0 execute mode is enabled.
138 *
139 * @returns true if enabled.
140 * @returns false if disabled.
141 * @param pVM The cross context VM structure.
142 */
143#define EMIsRawRing0Enabled(pVM) (!(pVM)->fRecompileSupervisor)
144
145#ifdef VBOX_WITH_RAW_RING1
146/**
147 * Checks if raw ring-1 execute mode is enabled.
148 *
149 * @returns true if enabled.
150 * @returns false if disabled.
151 * @param pVM The cross context VM structure.
152 */
153# define EMIsRawRing1Enabled(pVM) ((pVM)->fRawRing1Enabled)
154#else
155# define EMIsRawRing1Enabled(pVM) false
156#endif
157
158/**
159 * Checks if execution with hardware assisted virtualization is enabled.
160 *
161 * @returns true if enabled.
162 * @returns false if disabled.
163 * @param pVM The cross context VM structure.
164 */
165#define EMIsHwVirtExecutionEnabled(pVM) (!(pVM)->fRecompileSupervisor && !(pVM)->fRecompileUser)
166
167/**
168 * Checks if execution of supervisor code should be done in the
169 * recompiler or not.
170 *
171 * @returns true if enabled.
172 * @returns false if disabled.
173 * @param pVM The cross context VM structure.
174 */
175#define EMIsSupervisorCodeRecompiled(pVM) ((pVM)->fRecompileSupervisor)
176
177VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC);
178VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu);
179VMMDECL(void) EMSetHypercallInstructionsEnabled(PVMCPU pVCpu, bool fEnabled);
180VMMDECL(bool) EMAreHypercallInstructionsEnabled(PVMCPU pVCpu);
181
182VMM_INT_DECL(int) EMInterpretDisasCurrent(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pCpu, unsigned *pcbInstr);
183VMM_INT_DECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore,
184 PDISCPUSTATE pDISState, unsigned *pcbInstr);
185VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPU pVCpu, PCPUMCTXCORE pCoreCtx, RTGCPTR pvFault);
186VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionEx(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbWritten);
187VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pCoreCtx,
188 RTGCPTR pvFault, EMCODETYPE enmCodeType);
189
190#ifdef IN_RC
191VMM_INT_DECL(int) EMInterpretIretV86ForPatm(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
192#endif
193
194VMM_INT_DECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
195VMM_INT_DECL(int) EMInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
196VMM_INT_DECL(int) EMInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
197VMM_INT_DECL(int) EMInterpretRdtscp(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
198VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pAddrGC);
199VMM_INT_DECL(VBOXSTRICTRC) EMInterpretMWait(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
200VMM_INT_DECL(int) EMInterpretMonitor(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
201VMM_INT_DECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen);
202VMM_INT_DECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx);
203VMM_INT_DECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
204VMM_INT_DECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame);
205VMM_INT_DECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx);
206VMM_INT_DECL(bool) EMMonitorWaitShouldContinue(PVMCPU pVCpu, PCPUMCTX pCtx);
207VMM_INT_DECL(int) EMMonitorWaitPrepare(PVMCPU pVCpu, uint64_t rax, uint64_t rcx, uint64_t rdx, RTGCPHYS GCPhys);
208VMM_INT_DECL(bool) EMMonitorIsArmed(PVMCPU pVCpu);
209VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx);
210VMM_INT_DECL(int) EMUnhaltAndWakeUp(PVM pVM, PVMCPU pVCpuDst);
211VMMRZ_INT_DECL(VBOXSTRICTRC) EMRZSetPendingIoPortWrite(PVMCPU pVCpu, RTIOPORT uPort, uint8_t cbInstr, uint8_t cbValue, uint32_t uValue);
212VMMRZ_INT_DECL(VBOXSTRICTRC) EMRZSetPendingIoPortRead(PVMCPU pVCpu, RTIOPORT uPort, uint8_t cbInstr, uint8_t cbValue);
213
214/** @name Assembly routines
215 * @{ */
216VMMDECL(uint32_t) EMEmulateCmp(uint32_t u32Param1, uint64_t u64Param2, size_t cb);
217VMMDECL(uint32_t) EMEmulateAnd(void *pvParam1, uint64_t u64Param2, size_t cb);
218VMMDECL(uint32_t) EMEmulateInc(void *pvParam1, size_t cb);
219VMMDECL(uint32_t) EMEmulateDec(void *pvParam1, size_t cb);
220VMMDECL(uint32_t) EMEmulateOr(void *pvParam1, uint64_t u64Param2, size_t cb);
221VMMDECL(int) EMEmulateLockOr(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf);
222VMMDECL(uint32_t) EMEmulateXor(void *pvParam1, uint64_t u64Param2, size_t cb);
223VMMDECL(int) EMEmulateLockXor(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf);
224VMMDECL(uint32_t) EMEmulateAdd(void *pvParam1, uint64_t u64Param2, size_t cb);
225VMMDECL(int) EMEmulateLockAnd(void *pvParam1, uint64_t u64Param2, size_t cbSize, RTGCUINTREG32 *pf);
226VMMDECL(uint32_t) EMEmulateSub(void *pvParam1, uint64_t u64Param2, size_t cb);
227VMMDECL(uint32_t) EMEmulateAdcWithCarrySet(void *pvParam1, uint64_t u64Param2, size_t cb);
228VMMDECL(uint32_t) EMEmulateBtr(void *pvParam1, uint64_t u64Param2);
229VMMDECL(int) EMEmulateLockBtr(void *pvParam1, uint64_t u64Param2, RTGCUINTREG32 *pf);
230VMMDECL(uint32_t) EMEmulateBts(void *pvParam1, uint64_t u64Param2);
231VMMDECL(uint32_t) EMEmulateBtc(void *pvParam1, uint64_t u64Param2);
232VMMDECL(uint32_t) EMEmulateCmpXchg(void *pvParam1, uint64_t *pu32Param2, uint64_t u32Param3, size_t cbSize);
233VMMDECL(uint32_t) EMEmulateLockCmpXchg(void *pvParam1, uint64_t *pu64Param2, uint64_t u64Param3, size_t cbSize);
234VMMDECL(uint32_t) EMEmulateCmpXchg8b(void *pu32Param1, uint32_t *pEAX, uint32_t *pEDX, uint32_t uEBX, uint32_t uECX);
235VMMDECL(uint32_t) EMEmulateLockCmpXchg8b(void *pu32Param1, uint32_t *pEAX, uint32_t *pEDX, uint32_t uEBX, uint32_t uECX);
236VMMDECL(uint32_t) EMEmulateXAdd(void *pvParam1, void *pvParam2, size_t cbOp);
237VMMDECL(uint32_t) EMEmulateLockXAdd(void *pvParam1, void *pvParam2, size_t cbOp);
238/** @} */
239
240/** @name REM locking routines
241 * @{ */
242VMMDECL(void) EMRemUnlock(PVM pVM);
243VMMDECL(void) EMRemLock(PVM pVM);
244VMMDECL(bool) EMRemIsLockOwner(PVM pVM);
245VMM_INT_DECL(int) EMRemTryLock(PVM pVM);
246/** @} */
247
248
249/** @name EM_ONE_INS_FLAGS_XXX - flags for EMR3HmSingleInstruction (et al).
250 * @{ */
251/** Return when CS:RIP changes or some other important event happens.
252 * This means running whole REP and LOOP $ sequences for instance. */
253#define EM_ONE_INS_FLAGS_RIP_CHANGE RT_BIT_32(0)
254/** Mask of valid flags. */
255#define EM_ONE_INS_FLAGS_MASK UINT32_C(0x00000001)
256/** @} */
257
258
259#ifdef IN_RING3
260/** @defgroup grp_em_r3 The EM Host Context Ring-3 API
261 * @{
262 */
263
264/**
265 * Command argument for EMR3RawSetMode().
266 *
267 * It's possible to extend this interface to change several
268 * execution modes at once should the need arise.
269 */
270typedef enum EMEXECPOLICY
271{
272 /** The customary invalid zero entry. */
273 EMEXECPOLICY_INVALID = 0,
274 /** Whether to recompile ring-0 code or execute it in raw/hm. */
275 EMEXECPOLICY_RECOMPILE_RING0,
276 /** Whether to recompile ring-3 code or execute it in raw/hm. */
277 EMEXECPOLICY_RECOMPILE_RING3,
278 /** Whether to only use IEM for execution. */
279 EMEXECPOLICY_IEM_ALL,
280 /** End of valid value (not included). */
281 EMEXECPOLICY_END,
282 /** The customary 32-bit type blowup. */
283 EMEXECPOLICY_32BIT_HACK = 0x7fffffff
284} EMEXECPOLICY;
285VMMR3DECL(int) EMR3SetExecutionPolicy(PUVM pUVM, EMEXECPOLICY enmPolicy, bool fEnforce);
286VMMR3DECL(int) EMR3QueryExecutionPolicy(PUVM pUVM, EMEXECPOLICY enmPolicy, bool *pfEnforced);
287VMMR3DECL(int) EMR3QueryMainExecutionEngine(PUVM pUVM, uint8_t *pbMainExecutionEngine);
288
289VMMR3_INT_DECL(int) EMR3Init(PVM pVM);
290VMMR3_INT_DECL(void) EMR3Relocate(PVM pVM);
291VMMR3_INT_DECL(void) EMR3ResetCpu(PVMCPU pVCpu);
292VMMR3_INT_DECL(void) EMR3Reset(PVM pVM);
293VMMR3_INT_DECL(int) EMR3Term(PVM pVM);
294VMMR3DECL(DECLNORETURN(void)) EMR3FatalError(PVMCPU pVCpu, int rc);
295VMMR3_INT_DECL(int) EMR3ExecuteVM(PVM pVM, PVMCPU pVCpu);
296VMMR3_INT_DECL(int) EMR3CheckRawForcedActions(PVM pVM, PVMCPU pVCpu);
297VMMR3_INT_DECL(int) EMR3NotifyResume(PVM pVM);
298VMMR3_INT_DECL(int) EMR3NotifySuspend(PVM pVM);
299VMMR3_INT_DECL(VBOXSTRICTRC) EMR3HmSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags);
300
301/** @} */
302#endif /* IN_RING3 */
303
304/** @} */
305
306RT_C_DECLS_END
307
308#endif
309
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