EM.cpp@ 10321

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1	/* $Id: EM.cpp 10205 2008-07-04 08:22:55Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor/Manager.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/** @page pg_em EM - The Execution Monitor/Manager
24	*
25	* The Execution Monitor/Manager is responsible for running the VM, scheduling
26	* the right kind of execution (Raw, Recompiled, Interpreted,..), and keeping
27	* the CPU states in sync. The function RMR3ExecuteVM() is the 'main-loop' of
28	* the VM.
29	*
30	*/
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#define LOG_GROUP LOG_GROUP_EM
36	#include <VBox/em.h>
37	#include <VBox/vmm.h>
38	#include <VBox/patm.h>
39	#include <VBox/csam.h>
40	#include <VBox/selm.h>
41	#include <VBox/trpm.h>
42	#include <VBox/iom.h>
43	#include <VBox/dbgf.h>
44	#include <VBox/pgm.h>
45	#include <VBox/rem.h>
46	#include <VBox/tm.h>
47	#include <VBox/mm.h>
48	#include <VBox/ssm.h>
49	#include <VBox/pdmapi.h>
50	#include <VBox/pdmcritsect.h>
51	#include <VBox/pdmqueue.h>
52	#include <VBox/hwaccm.h>
53	#include <VBox/patm.h>
54	#include "EMInternal.h"
55	#include <VBox/vm.h>
56	#include <VBox/cpumdis.h>
57	#include <VBox/dis.h>
58	#include <VBox/disopcode.h>
59	#include <VBox/dbgf.h>
60
61	#include <VBox/log.h>
62	#include <iprt/thread.h>
63	#include <iprt/assert.h>
64	#include <iprt/asm.h>
65	#include <iprt/semaphore.h>
66	#include <iprt/string.h>
67	#include <iprt/avl.h>
68	#include <iprt/stream.h>
69	#include <VBox/param.h>
70	#include <VBox/err.h>
71
72
73	/*******************************************************************************
74	* Internal Functions *
75	*******************************************************************************/
76	static DECLCALLBACK(int) emR3Save(PVM pVM, PSSMHANDLE pSSM);
77	static DECLCALLBACK(int) emR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version);
78	static int emR3Debug(PVM pVM, int rc);
79	static int emR3RemStep(PVM pVM);
80	static int emR3RemExecute(PVM pVM, bool *pfFFDone);
81	static int emR3RawResumeHyper(PVM pVM);
82	static int emR3RawStep(PVM pVM);
83	DECLINLINE(int) emR3RawHandleRC(PVM pVM, PCPUMCTX pCtx, int rc);
84	DECLINLINE(int) emR3RawUpdateForceFlag(PVM pVM, PCPUMCTX pCtx, int rc);
85	static int emR3RawForcedActions(PVM pVM, PCPUMCTX pCtx);
86	static int emR3RawExecute(PVM pVM, bool *pfFFDone);
87	DECLINLINE(int) emR3RawExecuteInstruction(PVM pVM, const char *pszPrefix, int rcGC = VINF_SUCCESS);
88	static int emR3HighPriorityPostForcedActions(PVM pVM, int rc);
89	static int emR3ForcedActions(PVM pVM, int rc);
90	static int emR3RawGuestTrap(PVM pVM);
91
92
93	/**
94	* Initializes the EM.
95	*
96	* @returns VBox status code.
97	* @param pVM The VM to operate on.
98	*/
99	EMR3DECL(int) EMR3Init(PVM pVM)
100	{
101	LogFlow(("EMR3Init\n"));
102	/*
103	* Assert alignment and sizes.
104	*/
105	AssertRelease(!(RT_OFFSETOF(VM, em.s) & 31));
106	AssertRelease(sizeof(pVM->em.s) <= sizeof(pVM->em.padding));
107	AssertReleaseMsg(sizeof(pVM->em.s.u.FatalLongJump) <= sizeof(pVM->em.s.u.achPaddingFatalLongJump),
108	("%d bytes, padding %d\n", sizeof(pVM->em.s.u.FatalLongJump), sizeof(pVM->em.s.u.achPaddingFatalLongJump)));
109
110	/*
111	* Init the structure.
112	*/
113	pVM->em.s.offVM = RT_OFFSETOF(VM, em.s);
114	int rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "RawR3Enabled", &pVM->fRawR3Enabled);
115	if (VBOX_FAILURE(rc))
116	pVM->fRawR3Enabled = true;
117	rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "RawR0Enabled", &pVM->fRawR0Enabled);
118	if (VBOX_FAILURE(rc))
119	pVM->fRawR0Enabled = true;
120	Log(("EMR3Init: fRawR3Enabled=%d fRawR0Enabled=%d\n", pVM->fRawR3Enabled, pVM->fRawR0Enabled));
121	pVM->em.s.enmState = EMSTATE_NONE;
122	pVM->em.s.fForceRAW = false;
123
124	rc = CPUMQueryGuestCtxPtr(pVM, &pVM->em.s.pCtx);
125	AssertMsgRC(rc, ("CPUMQueryGuestCtxPtr -> %Vrc\n", rc));
126	pVM->em.s.pPatmGCState = PATMR3QueryGCStateHC(pVM);
127	AssertMsg(pVM->em.s.pPatmGCState, ("PATMR3QueryGCStateHC failed!\n"));
128
129	/*
130	* Saved state.
131	*/
132	rc = SSMR3RegisterInternal(pVM, "em", 0, EM_SAVED_STATE_VERSION, 16,
133	NULL, emR3Save, NULL,
134	NULL, emR3Load, NULL);
135	if (VBOX_FAILURE(rc))
136	return rc;
137
138	/*
139	* Statistics.
140	*/
141	#ifdef VBOX_WITH_STATISTICS
142	PEMSTATS pStats;
143	rc = MMHyperAlloc(pVM, sizeof(pStats), 0, MM_TAG_EM, (void *)&pStats);
144	if (VBOX_FAILURE(rc))
145	return rc;
146	pVM->em.s.pStatsHC = pStats;
147	pVM->em.s.pStatsGC = MMHyperHC2GC(pVM, pStats);
148
149	STAM_REG(pVM, &pStats->StatGCEmulate, STAMTYPE_PROFILE, "/EM/GC/Interpret", STAMUNIT_TICKS_PER_CALL, "Profiling of EMInterpretInstruction.");
150	STAM_REG(pVM, &pStats->StatHCEmulate, STAMTYPE_PROFILE, "/EM/HC/Interpret", STAMUNIT_TICKS_PER_CALL, "Profiling of EMInterpretInstruction.");
151
152	STAM_REG(pVM, &pStats->StatGCInterpretSucceeded, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success", STAMUNIT_OCCURENCES, "The number of times an instruction was successfully interpreted.");
153	STAM_REG(pVM, &pStats->StatHCInterpretSucceeded, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success", STAMUNIT_OCCURENCES, "The number of times an instruction was successfully interpreted.");
154
155	STAM_REG_USED(pVM, &pStats->StatGCAnd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/And", STAMUNIT_OCCURENCES, "The number of times AND was successfully interpreted.");
156	STAM_REG_USED(pVM, &pStats->StatHCAnd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/And", STAMUNIT_OCCURENCES, "The number of times AND was successfully interpreted.");
157	STAM_REG_USED(pVM, &pStats->StatGCAdd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Add", STAMUNIT_OCCURENCES, "The number of times ADD was successfully interpreted.");
158	STAM_REG_USED(pVM, &pStats->StatHCAdd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Add", STAMUNIT_OCCURENCES, "The number of times ADD was successfully interpreted.");
159	STAM_REG_USED(pVM, &pStats->StatGCAdc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Adc", STAMUNIT_OCCURENCES, "The number of times ADC was successfully interpreted.");
160	STAM_REG_USED(pVM, &pStats->StatHCAdc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Adc", STAMUNIT_OCCURENCES, "The number of times ADC was successfully interpreted.");
161	STAM_REG_USED(pVM, &pStats->StatGCSub, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Sub", STAMUNIT_OCCURENCES, "The number of times SUB was successfully interpreted.");
162	STAM_REG_USED(pVM, &pStats->StatHCSub, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Sub", STAMUNIT_OCCURENCES, "The number of times SUB was successfully interpreted.");
163	STAM_REG_USED(pVM, &pStats->StatGCCpuId, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/CpuId", STAMUNIT_OCCURENCES, "The number of times CPUID was successfully interpreted.");
164	STAM_REG_USED(pVM, &pStats->StatHCCpuId, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/CpuId", STAMUNIT_OCCURENCES, "The number of times CPUID was successfully interpreted.");
165	STAM_REG_USED(pVM, &pStats->StatGCDec, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Dec", STAMUNIT_OCCURENCES, "The number of times DEC was successfully interpreted.");
166	STAM_REG_USED(pVM, &pStats->StatHCDec, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Dec", STAMUNIT_OCCURENCES, "The number of times DEC was successfully interpreted.");
167	STAM_REG_USED(pVM, &pStats->StatGCHlt, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Hlt", STAMUNIT_OCCURENCES, "The number of times HLT was successfully interpreted.");
168	STAM_REG_USED(pVM, &pStats->StatHCHlt, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Hlt", STAMUNIT_OCCURENCES, "The number of times HLT was successfully interpreted.");
169	STAM_REG_USED(pVM, &pStats->StatGCInc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Inc", STAMUNIT_OCCURENCES, "The number of times INC was successfully interpreted.");
170	STAM_REG_USED(pVM, &pStats->StatHCInc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Inc", STAMUNIT_OCCURENCES, "The number of times INC was successfully interpreted.");
171	STAM_REG_USED(pVM, &pStats->StatGCInvlPg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Invlpg", STAMUNIT_OCCURENCES, "The number of times INVLPG was successfully interpreted.");
172	STAM_REG_USED(pVM, &pStats->StatHCInvlPg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Invlpg", STAMUNIT_OCCURENCES, "The number of times INVLPG was successfully interpreted.");
173	STAM_REG_USED(pVM, &pStats->StatGCIret, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Iret", STAMUNIT_OCCURENCES, "The number of times IRET was successfully interpreted.");
174	STAM_REG_USED(pVM, &pStats->StatHCIret, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Iret", STAMUNIT_OCCURENCES, "The number of times IRET was successfully interpreted.");
175	STAM_REG_USED(pVM, &pStats->StatGCLLdt, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/LLdt", STAMUNIT_OCCURENCES, "The number of times LLDT was successfully interpreted.");
176	STAM_REG_USED(pVM, &pStats->StatHCLLdt, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/LLdt", STAMUNIT_OCCURENCES, "The number of times LLDT was successfully interpreted.");
177	STAM_REG_USED(pVM, &pStats->StatGCMov, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Mov", STAMUNIT_OCCURENCES, "The number of times MOV was successfully interpreted.");
178	STAM_REG_USED(pVM, &pStats->StatHCMov, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Mov", STAMUNIT_OCCURENCES, "The number of times MOV was successfully interpreted.");
179	STAM_REG_USED(pVM, &pStats->StatGCMovCRx, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/MovCRx", STAMUNIT_OCCURENCES, "The number of times MOV CRx was successfully interpreted.");
180	STAM_REG_USED(pVM, &pStats->StatHCMovCRx, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/MovCRx", STAMUNIT_OCCURENCES, "The number of times MOV CRx was successfully interpreted.");
181	STAM_REG_USED(pVM, &pStats->StatGCMovDRx, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/MovDRx", STAMUNIT_OCCURENCES, "The number of times MOV DRx was successfully interpreted.");
182	STAM_REG_USED(pVM, &pStats->StatHCMovDRx, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/MovDRx", STAMUNIT_OCCURENCES, "The number of times MOV DRx was successfully interpreted.");
183	STAM_REG_USED(pVM, &pStats->StatGCOr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Or", STAMUNIT_OCCURENCES, "The number of times OR was successfully interpreted.");
184	STAM_REG_USED(pVM, &pStats->StatHCOr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Or", STAMUNIT_OCCURENCES, "The number of times OR was successfully interpreted.");
185	STAM_REG_USED(pVM, &pStats->StatGCPop, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Pop", STAMUNIT_OCCURENCES, "The number of times POP was successfully interpreted.");
186	STAM_REG_USED(pVM, &pStats->StatHCPop, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Pop", STAMUNIT_OCCURENCES, "The number of times POP was successfully interpreted.");
187	STAM_REG_USED(pVM, &pStats->StatGCRdtsc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Rdtsc", STAMUNIT_OCCURENCES, "The number of times RDTSC was successfully interpreted.");
188	STAM_REG_USED(pVM, &pStats->StatHCRdtsc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Rdtsc", STAMUNIT_OCCURENCES, "The number of times RDTSC was successfully interpreted.");
189	STAM_REG_USED(pVM, &pStats->StatGCSti, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Sti", STAMUNIT_OCCURENCES, "The number of times STI was successfully interpreted.");
190	STAM_REG_USED(pVM, &pStats->StatHCSti, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Sti", STAMUNIT_OCCURENCES, "The number of times STI was successfully interpreted.");
191	STAM_REG_USED(pVM, &pStats->StatGCXchg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Xchg", STAMUNIT_OCCURENCES, "The number of times XCHG was successfully interpreted.");
192	STAM_REG_USED(pVM, &pStats->StatHCXchg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Xchg", STAMUNIT_OCCURENCES, "The number of times XCHG was successfully interpreted.");
193	STAM_REG_USED(pVM, &pStats->StatGCXor, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Xor", STAMUNIT_OCCURENCES, "The number of times XOR was successfully interpreted.");
194	STAM_REG_USED(pVM, &pStats->StatHCXor, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Xor", STAMUNIT_OCCURENCES, "The number of times XOR was successfully interpreted.");
195	STAM_REG_USED(pVM, &pStats->StatGCMonitor, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Monitor", STAMUNIT_OCCURENCES, "The number of times MONITOR was successfully interpreted.");
196	STAM_REG_USED(pVM, &pStats->StatHCMonitor, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Monitor", STAMUNIT_OCCURENCES, "The number of times MONITOR was successfully interpreted.");
197	STAM_REG_USED(pVM, &pStats->StatGCMWait, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/MWait", STAMUNIT_OCCURENCES, "The number of times MWAIT was successfully interpreted.");
198	STAM_REG_USED(pVM, &pStats->StatHCMWait, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/MWait", STAMUNIT_OCCURENCES, "The number of times MWAIT was successfully interpreted.");
199	STAM_REG_USED(pVM, &pStats->StatGCBtr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Btr", STAMUNIT_OCCURENCES, "The number of times BTR was successfully interpreted.");
200	STAM_REG_USED(pVM, &pStats->StatHCBtr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Btr", STAMUNIT_OCCURENCES, "The number of times BTR was successfully interpreted.");
201	STAM_REG_USED(pVM, &pStats->StatGCBts, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Bts", STAMUNIT_OCCURENCES, "The number of times BTS was successfully interpreted.");
202	STAM_REG_USED(pVM, &pStats->StatHCBts, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Bts", STAMUNIT_OCCURENCES, "The number of times BTS was successfully interpreted.");
203	STAM_REG_USED(pVM, &pStats->StatGCBtc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Btc", STAMUNIT_OCCURENCES, "The number of times BTC was successfully interpreted.");
204	STAM_REG_USED(pVM, &pStats->StatHCBtc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Btc", STAMUNIT_OCCURENCES, "The number of times BTC was successfully interpreted.");
205	STAM_REG_USED(pVM, &pStats->StatGCCmpXchg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/CmpXchg", STAMUNIT_OCCURENCES, "The number of times CMPXCHG was successfully interpreted.");
206	STAM_REG_USED(pVM, &pStats->StatHCCmpXchg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/CmpXchg", STAMUNIT_OCCURENCES, "The number of times CMPXCHG was successfully interpreted.");
207	STAM_REG_USED(pVM, &pStats->StatGCCmpXchg8b, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/CmpXchg8b", STAMUNIT_OCCURENCES, "The number of times CMPXCHG8B was successfully interpreted.");
208	STAM_REG_USED(pVM, &pStats->StatHCCmpXchg8b, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/CmpXchg8b", STAMUNIT_OCCURENCES, "The number of times CMPXCHG8B was successfully interpreted.");
209	STAM_REG_USED(pVM, &pStats->StatGCXAdd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/XAdd", STAMUNIT_OCCURENCES, "The number of times XADD was successfully interpreted.");
210	STAM_REG_USED(pVM, &pStats->StatHCXAdd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/XAdd", STAMUNIT_OCCURENCES, "The number of times XADD was successfully interpreted.");
211	STAM_REG_USED(pVM, &pStats->StatHCRdmsr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Rdmsr", STAMUNIT_OCCURENCES, "The number of times RDMSR was not interpreted.");
212	STAM_REG_USED(pVM, &pStats->StatGCRdmsr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Rdmsr", STAMUNIT_OCCURENCES, "The number of times RDMSR was not interpreted.");
213	STAM_REG_USED(pVM, &pStats->StatHCWrmsr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Success/Wrmsr", STAMUNIT_OCCURENCES, "The number of times WRMSR was not interpreted.");
214	STAM_REG_USED(pVM, &pStats->StatGCWrmsr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Success/Wrmsr", STAMUNIT_OCCURENCES, "The number of times WRMSR was not interpreted.");
215
216	STAM_REG(pVM, &pStats->StatGCInterpretFailed, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed", STAMUNIT_OCCURENCES, "The number of times an instruction was not interpreted.");
217	STAM_REG(pVM, &pStats->StatHCInterpretFailed, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed", STAMUNIT_OCCURENCES, "The number of times an instruction was not interpreted.");
218
219	STAM_REG_USED(pVM, &pStats->StatGCFailedAnd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/And", STAMUNIT_OCCURENCES, "The number of times AND was not interpreted.");
220	STAM_REG_USED(pVM, &pStats->StatHCFailedAnd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/And", STAMUNIT_OCCURENCES, "The number of times AND was not interpreted.");
221	STAM_REG_USED(pVM, &pStats->StatGCFailedCpuId, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/CpuId", STAMUNIT_OCCURENCES, "The number of times CPUID was not interpreted.");
222	STAM_REG_USED(pVM, &pStats->StatHCFailedCpuId, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/CpuId", STAMUNIT_OCCURENCES, "The number of times CPUID was not interpreted.");
223	STAM_REG_USED(pVM, &pStats->StatGCFailedDec, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Dec", STAMUNIT_OCCURENCES, "The number of times DEC was not interpreted.");
224	STAM_REG_USED(pVM, &pStats->StatHCFailedDec, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Dec", STAMUNIT_OCCURENCES, "The number of times DEC was not interpreted.");
225	STAM_REG_USED(pVM, &pStats->StatGCFailedHlt, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Hlt", STAMUNIT_OCCURENCES, "The number of times HLT was not interpreted.");
226	STAM_REG_USED(pVM, &pStats->StatHCFailedHlt, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Hlt", STAMUNIT_OCCURENCES, "The number of times HLT was not interpreted.");
227	STAM_REG_USED(pVM, &pStats->StatGCFailedInc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Inc", STAMUNIT_OCCURENCES, "The number of times INC was not interpreted.");
228	STAM_REG_USED(pVM, &pStats->StatHCFailedInc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Inc", STAMUNIT_OCCURENCES, "The number of times INC was not interpreted.");
229	STAM_REG_USED(pVM, &pStats->StatGCFailedInvlPg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/InvlPg", STAMUNIT_OCCURENCES, "The number of times INVLPG was not interpreted.");
230	STAM_REG_USED(pVM, &pStats->StatHCFailedInvlPg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/InvlPg", STAMUNIT_OCCURENCES, "The number of times INVLPG was not interpreted.");
231	STAM_REG_USED(pVM, &pStats->StatGCFailedIret, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Iret", STAMUNIT_OCCURENCES, "The number of times IRET was not interpreted.");
232	STAM_REG_USED(pVM, &pStats->StatHCFailedIret, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Iret", STAMUNIT_OCCURENCES, "The number of times IRET was not interpreted.");
233	STAM_REG_USED(pVM, &pStats->StatGCFailedLLdt, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/LLdt", STAMUNIT_OCCURENCES, "The number of times LLDT was not interpreted.");
234	STAM_REG_USED(pVM, &pStats->StatHCFailedLLdt, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/LLdt", STAMUNIT_OCCURENCES, "The number of times LLDT was not interpreted.");
235	STAM_REG_USED(pVM, &pStats->StatGCFailedMov, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Mov", STAMUNIT_OCCURENCES, "The number of times MOV was not interpreted.");
236	STAM_REG_USED(pVM, &pStats->StatHCFailedMov, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Mov", STAMUNIT_OCCURENCES, "The number of times MOV was not interpreted.");
237	STAM_REG_USED(pVM, &pStats->StatGCFailedMovCRx, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/MovCRx", STAMUNIT_OCCURENCES, "The number of times MOV CRx was not interpreted.");
238	STAM_REG_USED(pVM, &pStats->StatHCFailedMovCRx, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/MovCRx", STAMUNIT_OCCURENCES, "The number of times MOV CRx was not interpreted.");
239	STAM_REG_USED(pVM, &pStats->StatGCFailedMovDRx, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/MovDRx", STAMUNIT_OCCURENCES, "The number of times MOV DRx was not interpreted.");
240	STAM_REG_USED(pVM, &pStats->StatHCFailedMovDRx, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/MovDRx", STAMUNIT_OCCURENCES, "The number of times MOV DRx was not interpreted.");
241	STAM_REG_USED(pVM, &pStats->StatGCFailedOr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Or", STAMUNIT_OCCURENCES, "The number of times OR was not interpreted.");
242	STAM_REG_USED(pVM, &pStats->StatHCFailedOr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Or", STAMUNIT_OCCURENCES, "The number of times OR was not interpreted.");
243	STAM_REG_USED(pVM, &pStats->StatGCFailedPop, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Pop", STAMUNIT_OCCURENCES, "The number of times POP was not interpreted.");
244	STAM_REG_USED(pVM, &pStats->StatHCFailedPop, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Pop", STAMUNIT_OCCURENCES, "The number of times POP was not interpreted.");
245	STAM_REG_USED(pVM, &pStats->StatGCFailedSti, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Sti", STAMUNIT_OCCURENCES, "The number of times STI was not interpreted.");
246	STAM_REG_USED(pVM, &pStats->StatHCFailedSti, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Sti", STAMUNIT_OCCURENCES, "The number of times STI was not interpreted.");
247	STAM_REG_USED(pVM, &pStats->StatGCFailedXchg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Xchg", STAMUNIT_OCCURENCES, "The number of times XCHG was not interpreted.");
248	STAM_REG_USED(pVM, &pStats->StatHCFailedXchg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Xchg", STAMUNIT_OCCURENCES, "The number of times XCHG was not interpreted.");
249	STAM_REG_USED(pVM, &pStats->StatGCFailedXor, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Xor", STAMUNIT_OCCURENCES, "The number of times XOR was not interpreted.");
250	STAM_REG_USED(pVM, &pStats->StatHCFailedXor, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Xor", STAMUNIT_OCCURENCES, "The number of times XOR was not interpreted.");
251	STAM_REG_USED(pVM, &pStats->StatGCFailedMonitor, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Monitor", STAMUNIT_OCCURENCES, "The number of times MONITOR was not interpreted.");
252	STAM_REG_USED(pVM, &pStats->StatHCFailedMonitor, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Monitor", STAMUNIT_OCCURENCES, "The number of times MONITOR was not interpreted.");
253	STAM_REG_USED(pVM, &pStats->StatGCFailedMWait, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/MWait", STAMUNIT_OCCURENCES, "The number of times MONITOR was not interpreted.");
254	STAM_REG_USED(pVM, &pStats->StatHCFailedMWait, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/MWait", STAMUNIT_OCCURENCES, "The number of times MONITOR was not interpreted.");
255	STAM_REG_USED(pVM, &pStats->StatGCFailedRdtsc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Rdtsc", STAMUNIT_OCCURENCES, "The number of times RDTSC was not interpreted.");
256	STAM_REG_USED(pVM, &pStats->StatHCFailedRdtsc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Rdtsc", STAMUNIT_OCCURENCES, "The number of times RDTSC was not interpreted.");
257	STAM_REG_USED(pVM, &pStats->StatGCFailedRdmsr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Rdmsr", STAMUNIT_OCCURENCES, "The number of times RDMSR was not interpreted.");
258	STAM_REG_USED(pVM, &pStats->StatHCFailedRdmsr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Rdmsr", STAMUNIT_OCCURENCES, "The number of times RDMSR was not interpreted.");
259	STAM_REG_USED(pVM, &pStats->StatGCFailedWrmsr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Wrmsr", STAMUNIT_OCCURENCES, "The number of times WRMSR was not interpreted.");
260	STAM_REG_USED(pVM, &pStats->StatHCFailedWrmsr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Wrmsr", STAMUNIT_OCCURENCES, "The number of times WRMSR was not interpreted.");
261
262	STAM_REG_USED(pVM, &pStats->StatGCFailedMisc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Misc", STAMUNIT_OCCURENCES, "The number of times some misc instruction was encountered.");
263	STAM_REG_USED(pVM, &pStats->StatHCFailedMisc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Misc", STAMUNIT_OCCURENCES, "The number of times some misc instruction was encountered.");
264	STAM_REG_USED(pVM, &pStats->StatGCFailedAdd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Add", STAMUNIT_OCCURENCES, "The number of times ADD was not interpreted.");
265	STAM_REG_USED(pVM, &pStats->StatHCFailedAdd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Add", STAMUNIT_OCCURENCES, "The number of times ADD was not interpreted.");
266	STAM_REG_USED(pVM, &pStats->StatGCFailedAdc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Adc", STAMUNIT_OCCURENCES, "The number of times ADC was not interpreted.");
267	STAM_REG_USED(pVM, &pStats->StatHCFailedAdc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Adc", STAMUNIT_OCCURENCES, "The number of times ADC was not interpreted.");
268	STAM_REG_USED(pVM, &pStats->StatGCFailedBtr, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Btr", STAMUNIT_OCCURENCES, "The number of times BTR was not interpreted.");
269	STAM_REG_USED(pVM, &pStats->StatHCFailedBtr, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Btr", STAMUNIT_OCCURENCES, "The number of times BTR was not interpreted.");
270	STAM_REG_USED(pVM, &pStats->StatGCFailedBts, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Bts", STAMUNIT_OCCURENCES, "The number of times BTS was not interpreted.");
271	STAM_REG_USED(pVM, &pStats->StatHCFailedBts, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Bts", STAMUNIT_OCCURENCES, "The number of times BTS was not interpreted.");
272	STAM_REG_USED(pVM, &pStats->StatGCFailedBtc, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Btc", STAMUNIT_OCCURENCES, "The number of times BTC was not interpreted.");
273	STAM_REG_USED(pVM, &pStats->StatHCFailedBtc, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Btc", STAMUNIT_OCCURENCES, "The number of times BTC was not interpreted.");
274	STAM_REG_USED(pVM, &pStats->StatGCFailedCli, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Cli", STAMUNIT_OCCURENCES, "The number of times CLI was not interpreted.");
275	STAM_REG_USED(pVM, &pStats->StatHCFailedCli, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Cli", STAMUNIT_OCCURENCES, "The number of times CLI was not interpreted.");
276	STAM_REG_USED(pVM, &pStats->StatGCFailedCmpXchg, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/CmpXchg", STAMUNIT_OCCURENCES, "The number of times CMPXCHG was not interpreted.");
277	STAM_REG_USED(pVM, &pStats->StatHCFailedCmpXchg, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/CmpXchg", STAMUNIT_OCCURENCES, "The number of times CMPXCHG was not interpreted.");
278	STAM_REG_USED(pVM, &pStats->StatGCFailedCmpXchg8b, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/CmpXchg8b", STAMUNIT_OCCURENCES, "The number of times CMPXCHG8B was not interpreted.");
279	STAM_REG_USED(pVM, &pStats->StatHCFailedCmpXchg8b, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/CmpXchg8b", STAMUNIT_OCCURENCES, "The number of times CMPXCHG8B was not interpreted.");
280	STAM_REG_USED(pVM, &pStats->StatGCFailedXAdd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/XAdd", STAMUNIT_OCCURENCES, "The number of times XADD was not interpreted.");
281	STAM_REG_USED(pVM, &pStats->StatHCFailedXAdd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/XAdd", STAMUNIT_OCCURENCES, "The number of times XADD was not interpreted.");
282	STAM_REG_USED(pVM, &pStats->StatGCFailedMovNTPS, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/MovNTPS", STAMUNIT_OCCURENCES, "The number of times MOVNTPS was not interpreted.");
283	STAM_REG_USED(pVM, &pStats->StatHCFailedMovNTPS, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/MovNTPS", STAMUNIT_OCCURENCES, "The number of times MOVNTPS was not interpreted.");
284	STAM_REG_USED(pVM, &pStats->StatGCFailedStosWD, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/StosWD", STAMUNIT_OCCURENCES, "The number of times STOSWD was not interpreted.");
285	STAM_REG_USED(pVM, &pStats->StatHCFailedStosWD, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/StosWD", STAMUNIT_OCCURENCES, "The number of times STOSWD was not interpreted.");
286	STAM_REG_USED(pVM, &pStats->StatGCFailedSub, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Sub", STAMUNIT_OCCURENCES, "The number of times SUB was not interpreted.");
287	STAM_REG_USED(pVM, &pStats->StatHCFailedSub, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Sub", STAMUNIT_OCCURENCES, "The number of times SUB was not interpreted.");
288	STAM_REG_USED(pVM, &pStats->StatGCFailedWbInvd, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/WbInvd", STAMUNIT_OCCURENCES, "The number of times WBINVD was not interpreted.");
289	STAM_REG_USED(pVM, &pStats->StatHCFailedWbInvd, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/WbInvd", STAMUNIT_OCCURENCES, "The number of times WBINVD was not interpreted.");
290
291	STAM_REG_USED(pVM, &pStats->StatGCFailedUserMode, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/UserMode", STAMUNIT_OCCURENCES, "The number of rejections because of CPL.");
292	STAM_REG_USED(pVM, &pStats->StatHCFailedUserMode, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/UserMode", STAMUNIT_OCCURENCES, "The number of rejections because of CPL.");
293	STAM_REG_USED(pVM, &pStats->StatGCFailedPrefix, STAMTYPE_COUNTER, "/EM/GC/Interpret/Failed/Prefix", STAMUNIT_OCCURENCES, "The number of rejections because of prefix .");
294	STAM_REG_USED(pVM, &pStats->StatHCFailedPrefix, STAMTYPE_COUNTER, "/EM/HC/Interpret/Failed/Prefix", STAMUNIT_OCCURENCES, "The number of rejections because of prefix .");
295
296	STAM_REG_USED(pVM, &pStats->StatCli, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Cli", STAMUNIT_OCCURENCES, "Number of cli instructions.");
297	STAM_REG_USED(pVM, &pStats->StatSti, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Sti", STAMUNIT_OCCURENCES, "Number of sli instructions.");
298	STAM_REG_USED(pVM, &pStats->StatIn, STAMTYPE_COUNTER, "/EM/HC/PrivInst/In", STAMUNIT_OCCURENCES, "Number of in instructions.");
299	STAM_REG_USED(pVM, &pStats->StatOut, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Out", STAMUNIT_OCCURENCES, "Number of out instructions.");
300	STAM_REG_USED(pVM, &pStats->StatHlt, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Hlt", STAMUNIT_OCCURENCES, "Number of hlt instructions not handled in GC because of PATM.");
301	STAM_REG_USED(pVM, &pStats->StatInvlpg, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Invlpg", STAMUNIT_OCCURENCES, "Number of invlpg instructions.");
302	STAM_REG_USED(pVM, &pStats->StatMisc, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Misc", STAMUNIT_OCCURENCES, "Number of misc. instructions.");
303	STAM_REG_USED(pVM, &pStats->StatMovWriteCR[0], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov CR0, X", STAMUNIT_OCCURENCES, "Number of mov CR0 read instructions.");
304	STAM_REG_USED(pVM, &pStats->StatMovWriteCR[1], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov CR1, X", STAMUNIT_OCCURENCES, "Number of mov CR1 read instructions.");
305	STAM_REG_USED(pVM, &pStats->StatMovWriteCR[2], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov CR2, X", STAMUNIT_OCCURENCES, "Number of mov CR2 read instructions.");
306	STAM_REG_USED(pVM, &pStats->StatMovWriteCR[3], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov CR3, X", STAMUNIT_OCCURENCES, "Number of mov CR3 read instructions.");
307	STAM_REG_USED(pVM, &pStats->StatMovWriteCR[4], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov CR4, X", STAMUNIT_OCCURENCES, "Number of mov CR4 read instructions.");
308	STAM_REG_USED(pVM, &pStats->StatMovReadCR[0], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov X, CR0", STAMUNIT_OCCURENCES, "Number of mov CR0 write instructions.");
309	STAM_REG_USED(pVM, &pStats->StatMovReadCR[1], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov X, CR1", STAMUNIT_OCCURENCES, "Number of mov CR1 write instructions.");
310	STAM_REG_USED(pVM, &pStats->StatMovReadCR[2], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov X, CR2", STAMUNIT_OCCURENCES, "Number of mov CR2 write instructions.");
311	STAM_REG_USED(pVM, &pStats->StatMovReadCR[3], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov X, CR3", STAMUNIT_OCCURENCES, "Number of mov CR3 write instructions.");
312	STAM_REG_USED(pVM, &pStats->StatMovReadCR[4], STAMTYPE_COUNTER, "/EM/HC/PrivInst/Mov X, CR4", STAMUNIT_OCCURENCES, "Number of mov CR4 write instructions.");
313	STAM_REG_USED(pVM, &pStats->StatMovDRx, STAMTYPE_COUNTER, "/EM/HC/PrivInst/MovDRx", STAMUNIT_OCCURENCES, "Number of mov DRx instructions.");
314	STAM_REG_USED(pVM, &pStats->StatIret, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Iret", STAMUNIT_OCCURENCES, "Number of iret instructions.");
315	STAM_REG_USED(pVM, &pStats->StatMovLgdt, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Lgdt", STAMUNIT_OCCURENCES, "Number of lgdt instructions.");
316	STAM_REG_USED(pVM, &pStats->StatMovLidt, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Lidt", STAMUNIT_OCCURENCES, "Number of lidt instructions.");
317	STAM_REG_USED(pVM, &pStats->StatMovLldt, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Lldt", STAMUNIT_OCCURENCES, "Number of lldt instructions.");
318	STAM_REG_USED(pVM, &pStats->StatSysEnter, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Sysenter", STAMUNIT_OCCURENCES, "Number of sysenter instructions.");
319	STAM_REG_USED(pVM, &pStats->StatSysExit, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Sysexit", STAMUNIT_OCCURENCES, "Number of sysexit instructions.");
320	STAM_REG_USED(pVM, &pStats->StatSysCall, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Syscall", STAMUNIT_OCCURENCES, "Number of syscall instructions.");
321	STAM_REG_USED(pVM, &pStats->StatSysRet, STAMTYPE_COUNTER, "/EM/HC/PrivInst/Sysret", STAMUNIT_OCCURENCES, "Number of sysret instructions.");
322
323	STAM_REG(pVM, &pVM->em.s.StatTotalClis, STAMTYPE_COUNTER, "/EM/Cli/Total", STAMUNIT_OCCURENCES, "Total number of cli instructions executed.");
324	pVM->em.s.pCliStatTree = 0;
325	#endif /* VBOX_WITH_STATISTICS */
326
327	/* these should be considered for release statistics. */
328	STAM_REG(pVM, &pVM->em.s.StatForcedActions, STAMTYPE_PROFILE, "/PROF/EM/ForcedActions", STAMUNIT_TICKS_PER_CALL, "Profiling forced action execution.");
329	STAM_REL_REG(pVM, &pVM->em.s.StatHalted, STAMTYPE_PROFILE, "/PROF/EM/Halted", STAMUNIT_TICKS_PER_CALL, "Profiling halted state (VMR3WaitHalted).");
330	STAM_REG(pVM, &pVM->em.s.StatHwAccEntry, STAMTYPE_PROFILE, "/PROF/EM/HwAccEnter", STAMUNIT_TICKS_PER_CALL, "Profiling Hardware Accelerated Mode entry overhead.");
331	STAM_REG(pVM, &pVM->em.s.StatHwAccExec, STAMTYPE_PROFILE, "/PROF/EM/HwAccExec", STAMUNIT_TICKS_PER_CALL, "Profiling Hardware Accelerated Mode execution.");
332	STAM_REG(pVM, &pVM->em.s.StatIOEmu, STAMTYPE_PROFILE, "/PROF/EM/Emulation/IO", STAMUNIT_TICKS_PER_CALL, "Profiling of emR3RawExecuteIOInstruction.");
333	STAM_REG(pVM, &pVM->em.s.StatPrivEmu, STAMTYPE_PROFILE, "/PROF/EM/Emulation/Priv", STAMUNIT_TICKS_PER_CALL, "Profiling of emR3RawPrivileged.");
334	STAM_REG(pVM, &pVM->em.s.StatMiscEmu, STAMTYPE_PROFILE, "/PROF/EM/Emulation/Misc", STAMUNIT_TICKS_PER_CALL, "Profiling of emR3RawExecuteInstruction.");
335	STAM_REG(pVM, &pVM->em.s.StatREMEmu, STAMTYPE_PROFILE, "/PROF/EM/REMEmuSingle", STAMUNIT_TICKS_PER_CALL, "Profiling single instruction REM execution.");
336	STAM_REG(pVM, &pVM->em.s.StatREMExec, STAMTYPE_PROFILE, "/PROF/EM/REMExec", STAMUNIT_TICKS_PER_CALL, "Profiling REM execution.");
337	STAM_REG(pVM, &pVM->em.s.StatREMSync, STAMTYPE_PROFILE, "/PROF/EM/REMSync", STAMUNIT_TICKS_PER_CALL, "Profiling REM context syncing.");
338	STAM_REG(pVM, &pVM->em.s.StatREMTotal, STAMTYPE_PROFILE, "/PROF/EM/REMTotal", STAMUNIT_TICKS_PER_CALL, "Profiling emR3RemExecute (excluding FFs).");
339	STAM_REG(pVM, &pVM->em.s.StatRAWEntry, STAMTYPE_PROFILE, "/PROF/EM/RAWEnter", STAMUNIT_TICKS_PER_CALL, "Profiling Raw Mode entry overhead.");
340	STAM_REG(pVM, &pVM->em.s.StatRAWExec, STAMTYPE_PROFILE, "/PROF/EM/RAWExec", STAMUNIT_TICKS_PER_CALL, "Profiling Raw Mode execution.");
341	STAM_REG(pVM, &pVM->em.s.StatRAWTail, STAMTYPE_PROFILE, "/PROF/EM/RAWTail", STAMUNIT_TICKS_PER_CALL, "Profiling Raw Mode tail overhead.");
342	STAM_REG(pVM, &pVM->em.s.StatRAWTotal, STAMTYPE_PROFILE, "/PROF/EM/RAWTotal", STAMUNIT_TICKS_PER_CALL, "Profiling emR3RawExecute (excluding FFs).");
343	STAM_REL_REG(pVM, &pVM->em.s.StatTotal, STAMTYPE_PROFILE_ADV, "/PROF/EM/Total", STAMUNIT_TICKS_PER_CALL, "Profiling EMR3ExecuteVM.");
344
345
346	return VINF_SUCCESS;
347	}
348
349
350
351	/**
352	* Applies relocations to data and code managed by this
353	* component. This function will be called at init and
354	* whenever the VMM need to relocate it self inside the GC.
355	*
356	* @param pVM The VM.
357	*/
358	EMR3DECL(void) EMR3Relocate(PVM pVM)
359	{
360	LogFlow(("EMR3Relocate\n"));
361	if (pVM->em.s.pStatsHC)
362	pVM->em.s.pStatsGC = MMHyperHC2GC(pVM, pVM->em.s.pStatsHC);
363	}
364
365
366	/**
367	* Reset notification.
368	*
369	* @param pVM
370	*/
371	EMR3DECL(void) EMR3Reset(PVM pVM)
372	{
373	LogFlow(("EMR3Reset: \n"));
374	pVM->em.s.fForceRAW = false;
375	}
376
377
378	/**
379	* Terminates the EM.
380	*
381	* Termination means cleaning up and freeing all resources,
382	* the VM it self is at this point powered off or suspended.
383	*
384	* @returns VBox status code.
385	* @param pVM The VM to operate on.
386	*/
387	EMR3DECL(int) EMR3Term(PVM pVM)
388	{
389	AssertMsg(pVM->em.s.offVM, ("bad init order!\n"));
390
391	return VINF_SUCCESS;
392	}
393
394
395	/**
396	* Execute state save operation.
397	*
398	* @returns VBox status code.
399	* @param pVM VM Handle.
400	* @param pSSM SSM operation handle.
401	*/
402	static DECLCALLBACK(int) emR3Save(PVM pVM, PSSMHANDLE pSSM)
403	{
404	return SSMR3PutBool(pSSM, pVM->em.s.fForceRAW);
405	}
406
407
408	/**
409	* Execute state load operation.
410	*
411	* @returns VBox status code.
412	* @param pVM VM Handle.
413	* @param pSSM SSM operation handle.
414	* @param u32Version Data layout version.
415	*/
416	static DECLCALLBACK(int) emR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
417	{
418	/*
419	* Validate version.
420	*/
421	if (u32Version != EM_SAVED_STATE_VERSION)
422	{
423	Log(("emR3Load: Invalid version u32Version=%d (current %d)!\n", u32Version, EM_SAVED_STATE_VERSION));
424	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
425	}
426
427	/*
428	* Load the saved state.
429	*/
430	int rc = SSMR3GetBool(pSSM, &pVM->em.s.fForceRAW);
431	if (VBOX_FAILURE(rc))
432	pVM->em.s.fForceRAW = false;
433
434	Assert(pVM->em.s.pCliStatTree == 0);
435	return rc;
436	}
437
438
439	/**
440	* Enables or disables a set of raw-mode execution modes.
441	*
442	* @returns VINF_SUCCESS on success.
443	* @returns VINF_RESCHEDULE if a rescheduling might be required.
444	* @returns VERR_INVALID_PARAMETER on an invalid enmMode value.
445	*
446	* @param pVM The VM to operate on.
447	* @param enmMode The execution mode change.
448	* @thread The emulation thread.
449	*/
450	EMR3DECL(int) EMR3RawSetMode(PVM pVM, EMRAWMODE enmMode)
451	{
452	switch (enmMode)
453	{
454	case EMRAW_NONE:
455	pVM->fRawR3Enabled = false;
456	pVM->fRawR0Enabled = false;
457	break;
458	case EMRAW_RING3_ENABLE:
459	pVM->fRawR3Enabled = true;
460	break;
461	case EMRAW_RING3_DISABLE:
462	pVM->fRawR3Enabled = false;
463	break;
464	case EMRAW_RING0_ENABLE:
465	pVM->fRawR0Enabled = true;
466	break;
467	case EMRAW_RING0_DISABLE:
468	pVM->fRawR0Enabled = false;
469	break;
470	default:
471	AssertMsgFailed(("Invalid enmMode=%d\n", enmMode));
472	return VERR_INVALID_PARAMETER;
473	}
474	Log(("EMR3SetRawMode: fRawR3Enabled=%RTbool fRawR0Enabled=%RTbool pVM->fRawR3Enabled=%RTbool\n",
475	pVM->fRawR3Enabled, pVM->fRawR0Enabled, pVM->fRawR3Enabled));
476	return pVM->em.s.enmState == EMSTATE_RAW ? VINF_EM_RESCHEDULE : VINF_SUCCESS;
477	}
478
479
480	/**
481	* Raise a fatal error.
482	*
483	* Safely terminate the VM with full state report and stuff. This function
484	* will naturally never return.
485	*
486	* @param pVM VM handle.
487	* @param rc VBox status code.
488	*/
489	EMR3DECL(void) EMR3FatalError(PVM pVM, int rc)
490	{
491	longjmp(pVM->em.s.u.FatalLongJump, rc);
492	AssertReleaseMsgFailed(("longjmp returned!\n"));
493	}
494
495
496	/**
497	* Gets the EM state name.
498	*
499	* @returns pointer to read only state name,
500	* @param enmState The state.
501	*/
502	EMR3DECL(const char *) EMR3GetStateName(EMSTATE enmState)
503	{
504	switch (enmState)
505	{
506	case EMSTATE_NONE: return "EMSTATE_NONE";
507	case EMSTATE_RAW: return "EMSTATE_RAW";
508	case EMSTATE_HWACC: return "EMSTATE_HWACC";
509	case EMSTATE_REM: return "EMSTATE_REM";
510	case EMSTATE_HALTED: return "EMSTATE_HALTED";
511	case EMSTATE_SUSPENDED: return "EMSTATE_SUSPENDED";
512	case EMSTATE_TERMINATING: return "EMSTATE_TERMINATING";
513	case EMSTATE_DEBUG_GUEST_RAW: return "EMSTATE_DEBUG_GUEST_RAW";
514	case EMSTATE_DEBUG_GUEST_REM: return "EMSTATE_DEBUG_GUEST_REM";
515	case EMSTATE_DEBUG_HYPER: return "EMSTATE_DEBUG_HYPER";
516	case EMSTATE_GURU_MEDITATION: return "EMSTATE_GURU_MEDITATION";
517	default: return "Unknown!";
518	}
519	}
520
521
522	#ifdef VBOX_WITH_STATISTICS
523	/**
524	* Just a braindead function to keep track of cli addresses.
525	* @param pVM VM handle.
526	* @param pInstrGC The EIP of the cli instruction.
527	*/
528	static void emR3RecordCli(PVM pVM, RTGCPTR pInstrGC)
529	{
530	PCLISTAT pRec;
531
532	pRec = (PCLISTAT)RTAvlPVGet(&pVM->em.s.pCliStatTree, (AVLPVKEY)pInstrGC);
533	if (!pRec)
534	{
535	/* New cli instruction; insert into the tree. */
536	pRec = (PCLISTAT)MMR3HeapAllocZ(pVM, MM_TAG_EM, sizeof(*pRec));
537	Assert(pRec);
538	if (!pRec)
539	return;
540	pRec->Core.Key = (AVLPVKEY)pInstrGC;
541
542	char szCliStatName[32];
543	RTStrPrintf(szCliStatName, sizeof(szCliStatName), "/EM/Cli/0x%VGv", pInstrGC);
544	STAM_REG(pVM, &pRec->Counter, STAMTYPE_COUNTER, szCliStatName, STAMUNIT_OCCURENCES, "Number of times cli was executed.");
545
546	bool fRc = RTAvlPVInsert(&pVM->em.s.pCliStatTree, &pRec->Core);
547	Assert(fRc); NOREF(fRc);
548	}
549	STAM_COUNTER_INC(&pRec->Counter);
550	STAM_COUNTER_INC(&pVM->em.s.StatTotalClis);
551	}
552	#endif /* VBOX_WITH_STATISTICS */
553
554
555	/**
556	* Debug loop.
557	*
558	* @returns VBox status code for EM.
559	* @param pVM VM handle.
560	* @param rc Current EM VBox status code..
561	*/
562	static int emR3Debug(PVM pVM, int rc)
563	{
564	for (;;)
565	{
566	Log(("emR3Debug: rc=%Vrc\n", rc));
567	const int rcLast = rc;
568
569	/*
570	* Debug related RC.
571	*/
572	switch (rc)
573	{
574	/*
575	* Single step an instruction.
576	*/
577	case VINF_EM_DBG_STEP:
578	if ( pVM->em.s.enmState == EMSTATE_DEBUG_GUEST_RAW
579	\|\| pVM->em.s.enmState == EMSTATE_DEBUG_HYPER
580	\|\| pVM->em.s.fForceRAW /* paranoia */)
581	rc = emR3RawStep(pVM);
582	else
583	{
584	Assert(pVM->em.s.enmState == EMSTATE_DEBUG_GUEST_REM);
585	rc = emR3RemStep(pVM);
586	}
587	break;
588
589	/*
590	* Simple events: stepped, breakpoint, stop/assertion.
591	*/
592	case VINF_EM_DBG_STEPPED:
593	rc = DBGFR3Event(pVM, DBGFEVENT_STEPPED);
594	break;
595
596	case VINF_EM_DBG_BREAKPOINT:
597	rc = DBGFR3EventBreakpoint(pVM, DBGFEVENT_BREAKPOINT);
598	break;
599
600	case VINF_EM_DBG_STOP:
601	rc = DBGFR3EventSrc(pVM, DBGFEVENT_DEV_STOP, NULL, 0, NULL, NULL);
602	break;
603
604	case VINF_EM_DBG_HYPER_STEPPED:
605	rc = DBGFR3Event(pVM, DBGFEVENT_STEPPED_HYPER);
606	break;
607
608	case VINF_EM_DBG_HYPER_BREAKPOINT:
609	rc = DBGFR3EventBreakpoint(pVM, DBGFEVENT_BREAKPOINT_HYPER);
610	break;
611
612	case VINF_EM_DBG_HYPER_ASSERTION:
613	RTPrintf("\nVINF_EM_DBG_HYPER_ASSERTION:\n%s%s\n", VMMR3GetGCAssertMsg1(pVM), VMMR3GetGCAssertMsg2(pVM));
614	rc = DBGFR3EventAssertion(pVM, DBGFEVENT_ASSERTION_HYPER, VMMR3GetGCAssertMsg1(pVM), VMMR3GetGCAssertMsg2(pVM));
615	break;
616
617	/*
618	* Guru meditation.
619	*/
620	case VERR_REM_TOO_MANY_TRAPS: /** @todo Make a guru mediation event! */
621	rc = DBGFR3EventSrc(pVM, DBGFEVENT_DEV_STOP, "VERR_REM_TOO_MANY_TRAPS", 0, NULL, NULL);
622	break;
623
624	default: /** @todo don't use default for guru, but make special errors code! */
625	rc = DBGFR3Event(pVM, DBGFEVENT_FATAL_ERROR);
626	break;
627	}
628
629	/*
630	* Process the result.
631	*/
632	do
633	{
634	switch (rc)
635	{
636	/*
637	* Continue the debugging loop.
638	*/
639	case VINF_EM_DBG_STEP:
640	case VINF_EM_DBG_STOP:
641	case VINF_EM_DBG_STEPPED:
642	case VINF_EM_DBG_BREAKPOINT:
643	case VINF_EM_DBG_HYPER_STEPPED:
644	case VINF_EM_DBG_HYPER_BREAKPOINT:
645	case VINF_EM_DBG_HYPER_ASSERTION:
646	break;
647
648	/*
649	* Resuming execution (in some form) has to be done here if we got
650	* a hypervisor debug event.
651	*/
652	case VINF_SUCCESS:
653	case VINF_EM_RESUME:
654	case VINF_EM_SUSPEND:
655	case VINF_EM_RESCHEDULE:
656	case VINF_EM_RESCHEDULE_RAW:
657	case VINF_EM_RESCHEDULE_REM:
658	case VINF_EM_HALT:
659	if (pVM->em.s.enmState == EMSTATE_DEBUG_HYPER)
660	{
661	rc = emR3RawResumeHyper(pVM);
662	if (rc != VINF_SUCCESS && VBOX_SUCCESS(rc))
663	continue;
664	}
665	if (rc == VINF_SUCCESS)
666	rc = VINF_EM_RESCHEDULE;
667	return rc;
668
669	/*
670	* The debugger isn't attached.
671	* We'll simply turn the thing off since that's the easiest thing to do.
672	*/
673	case VERR_DBGF_NOT_ATTACHED:
674	switch (rcLast)
675	{
676	case VINF_EM_DBG_HYPER_ASSERTION:
677	case VINF_EM_DBG_HYPER_STEPPED:
678	case VINF_EM_DBG_HYPER_BREAKPOINT:
679	return rcLast;
680	}
681	return VINF_EM_OFF;
682
683	/*
684	* Status codes terminating the VM in one or another sense.
685	*/
686	case VINF_EM_TERMINATE:
687	case VINF_EM_OFF:
688	case VINF_EM_RESET:
689	case VINF_EM_RAW_STALE_SELECTOR:
690	case VINF_EM_RAW_IRET_TRAP:
691	case VERR_TRPM_PANIC:
692	case VERR_TRPM_DONT_PANIC:
693	case VERR_INTERNAL_ERROR:
694	return rc;
695
696	/*
697	* The rest is unexpected, and will keep us here.
698	*/
699	default:
700	AssertMsgFailed(("Unxpected rc %Vrc!\n", rc));
701	break;
702	}
703	} while (false);
704	} /* debug for ever */
705	}
706
707
708	/**
709	* Steps recompiled code.
710	*
711	* @returns VBox status code. The most important ones are: VINF_EM_STEP_EVENT,
712	* VINF_EM_RESCHEDULE, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
713	*
714	* @param pVM VM handle.
715	*/
716	static int emR3RemStep(PVM pVM)
717	{
718	LogFlow(("emR3RemStep: cs:eip=%04x:%08x\n", CPUMGetGuestCS(pVM), CPUMGetGuestEIP(pVM)));
719
720	/*
721	* Switch to REM, step instruction, switch back.
722	*/
723	int rc = REMR3State(pVM);
724	if (VBOX_SUCCESS(rc))
725	{
726	rc = REMR3Step(pVM);
727	REMR3StateBack(pVM);
728	}
729	LogFlow(("emR3RemStep: returns %Vrc cs:eip=%04x:%08x\n", rc, CPUMGetGuestCS(pVM), CPUMGetGuestEIP(pVM)));
730	return rc;
731	}
732
733	/**
734	* Executes recompiled code.
735	*
736	* This function contains the recompiler version of the inner
737	* execution loop (the outer loop being in EMR3ExecuteVM()).
738	*
739	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE,
740	* VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
741	*
742	* @param pVM VM handle.
743	* @param pfFFDone Where to store an indicator telling wheter or not
744	* FFs were done before returning.
745	*
746	*/
747	static int emR3RemExecute(PVM pVM, bool *pfFFDone)
748	{
749	#ifdef LOG_ENABLED
750	PCPUMCTX pCtx = pVM->em.s.pCtx;
751	uint32_t cpl = CPUMGetGuestCPL(pVM, CPUMCTX2CORE(pCtx));
752
753	if (pCtx->eflags.Bits.u1VM)
754	Log(("EMV86: %04X:%08X IF=%d\n", pCtx->cs, pCtx->eip, pCtx->eflags.Bits.u1IF));
755	else
756	Log(("EMR%d: %08X ESP=%08X IF=%d CR0=%x\n", cpl, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, (uint32_t)pCtx->cr0));
757	#endif
758	STAM_PROFILE_ADV_START(&pVM->em.s.StatREMTotal, a);
759
760	#if defined(VBOX_STRICT) && defined(DEBUG_bird)
761	AssertMsg( VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3\|VM_FF_PGM_SYNC_CR3_NON_GLOBAL)
762	\|\| !MMHyperIsInsideArea(pVM, CPUMGetGuestEIP(pVM)), /** @todo #1419 - get flat address. */
763	("cs:eip=%RX16:%RX32\n", CPUMGetGuestCS(pVM), CPUMGetGuestEIP(pVM)));
764	#endif
765
766	/*
767	* Spin till we get a forced action which returns anything but VINF_SUCCESS
768	* or the REM suggests raw-mode execution.
769	*/
770	*pfFFDone = false;
771	bool fInREMState = false;
772	int rc = VINF_SUCCESS;
773	for (;;)
774	{
775	/*
776	* Update REM state if not already in sync.
777	*/
778	if (!fInREMState)
779	{
780	STAM_PROFILE_START(&pVM->em.s.StatREMSync, b);
781	rc = REMR3State(pVM);
782	STAM_PROFILE_STOP(&pVM->em.s.StatREMSync, b);
783	if (VBOX_FAILURE(rc))
784	break;
785	fInREMState = true;
786
787	/*
788	* We might have missed the raising of VMREQ, TIMER and some other
789	* imporant FFs while we were busy switching the state. So, check again.
790	*/
791	if (VM_FF_ISPENDING(pVM, VM_FF_REQUEST \| VM_FF_TIMER \| VM_FF_PDM_QUEUES \| VM_FF_DBGF \| VM_FF_TERMINATE \| VM_FF_RESET))
792	{
793	LogFlow(("emR3RemExecute: Skipping run, because FF is set. %#x\n", pVM->fForcedActions));
794	goto l_REMDoForcedActions;
795	}
796	}
797
798
799	/*
800	* Execute REM.
801	*/
802	STAM_PROFILE_START(&pVM->em.s.StatREMExec, c);
803	rc = REMR3Run(pVM);
804	STAM_PROFILE_STOP(&pVM->em.s.StatREMExec, c);
805
806
807	/*
808	* Deal with high priority post execution FFs before doing anything else.
809	*/
810	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK))
811	rc = emR3HighPriorityPostForcedActions(pVM, rc);
812
813	/*
814	* Process the returned status code.
815	* (Try keep this short! Call functions!)
816	*/
817	if (rc != VINF_SUCCESS)
818	{
819	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
820	break;
821	if (rc != VINF_REM_INTERRUPED_FF)
822	{
823	/*
824	* Anything which is not known to us means an internal error
825	* and the termination of the VM!
826	*/
827	AssertMsg(rc == VERR_REM_TOO_MANY_TRAPS, ("Unknown GC return code: %Vra\n", rc));
828	break;
829	}
830	}
831
832
833	/*
834	* Check and execute forced actions.
835	* Sync back the VM state before calling any of these.
836	*/
837	#ifdef VBOX_HIGH_RES_TIMERS_HACK
838	TMTimerPoll(pVM);
839	#endif
840	if (VM_FF_ISPENDING(pVM, VM_FF_ALL_BUT_RAW_MASK & ~(VM_FF_CSAM_PENDING_ACTION \| VM_FF_CSAM_SCAN_PAGE)))
841	{
842	l_REMDoForcedActions:
843	if (fInREMState)
844	{
845	STAM_PROFILE_START(&pVM->em.s.StatREMSync, d);
846	REMR3StateBack(pVM);
847	STAM_PROFILE_STOP(&pVM->em.s.StatREMSync, d);
848	fInREMState = false;
849	}
850	STAM_PROFILE_ADV_SUSPEND(&pVM->em.s.StatREMTotal, a);
851	rc = emR3ForcedActions(pVM, rc);
852	STAM_PROFILE_ADV_RESUME(&pVM->em.s.StatREMTotal, a);
853	if ( rc != VINF_SUCCESS
854	&& rc != VINF_EM_RESCHEDULE_REM)
855	{
856	*pfFFDone = true;
857	break;
858	}
859	}
860
861	} /* The Inner Loop, recompiled execution mode version. */
862
863
864	/*
865	* Returning. Sync back the VM state if required.
866	*/
867	if (fInREMState)
868	{
869	STAM_PROFILE_START(&pVM->em.s.StatREMSync, e);
870	REMR3StateBack(pVM);
871	STAM_PROFILE_STOP(&pVM->em.s.StatREMSync, e);
872	}
873
874	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatREMTotal, a);
875	return rc;
876	}
877
878
879	/**
880	* Resumes executing hypervisor after a debug event.
881	*
882	* This is kind of special since our current guest state is
883	* potentially out of sync.
884	*
885	* @returns VBox status code.
886	* @param pVM The VM handle.
887	*/
888	static int emR3RawResumeHyper(PVM pVM)
889	{
890	int rc;
891	PCPUMCTX pCtx = pVM->em.s.pCtx;
892	Assert(pVM->em.s.enmState == EMSTATE_DEBUG_HYPER);
893	Log(("emR3RawResumeHyper: cs:eip=%RTsel:%RGr efl=%RGr\n", pCtx->cs, pCtx->eip, pCtx->eflags));
894
895	/*
896	* Resume execution.
897	*/
898	CPUMRawEnter(pVM, NULL);
899	CPUMSetHyperEFlags(pVM, CPUMGetHyperEFlags(pVM) \| X86_EFL_RF);
900	rc = VMMR3ResumeHyper(pVM);
901	Log(("emR3RawStep: cs:eip=%RTsel:%RGr efl=%RGr - returned from GC with rc=%Vrc\n", pCtx->cs, pCtx->eip, pCtx->eflags, rc));
902	rc = CPUMRawLeave(pVM, NULL, rc);
903	VM_FF_CLEAR(pVM, VM_FF_RESUME_GUEST_MASK);
904
905	/*
906	* Deal with the return code.
907	*/
908	rc = emR3HighPriorityPostForcedActions(pVM, rc);
909	rc = emR3RawHandleRC(pVM, pCtx, rc);
910	rc = emR3RawUpdateForceFlag(pVM, pCtx, rc);
911	return rc;
912	}
913
914
915	/**
916	* Steps rawmode.
917	*
918	* @returns VBox status code.
919	* @param pVM The VM handle.
920	*/
921	static int emR3RawStep(PVM pVM)
922	{
923	Assert( pVM->em.s.enmState == EMSTATE_DEBUG_HYPER
924	\|\| pVM->em.s.enmState == EMSTATE_DEBUG_GUEST_RAW
925	\|\| pVM->em.s.enmState == EMSTATE_DEBUG_GUEST_REM);
926	int rc;
927	PCPUMCTX pCtx = pVM->em.s.pCtx;
928	bool fGuest = pVM->em.s.enmState != EMSTATE_DEBUG_HYPER;
929	#ifndef DEBUG_sandervl
930	Log(("emR3RawStep: cs:eip=%RTsel:%RGr efl=%RGr\n", fGuest ? CPUMGetGuestCS(pVM) : CPUMGetHyperCS(pVM),
931	fGuest ? CPUMGetGuestEIP(pVM) : CPUMGetHyperEIP(pVM), fGuest ? CPUMGetGuestEFlags(pVM) : CPUMGetHyperEFlags(pVM)));
932	#endif
933	if (fGuest)
934	{
935	/*
936	* Check vital forced actions, but ignore pending interrupts and timers.
937	*/
938	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK))
939	{
940	rc = emR3RawForcedActions(pVM, pCtx);
941	if (VBOX_FAILURE(rc))
942	return rc;
943	}
944
945	/*
946	* Set flags for single stepping.
947	*/
948	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) \| X86_EFL_TF \| X86_EFL_RF);
949	}
950	else
951	CPUMSetHyperEFlags(pVM, CPUMGetHyperEFlags(pVM) \| X86_EFL_TF \| X86_EFL_RF);
952
953	/*
954	* Single step.
955	* We do not start time or anything, if anything we should just do a few nanoseconds.
956	*/
957	CPUMRawEnter(pVM, NULL);
958	do
959	{
960	if (pVM->em.s.enmState == EMSTATE_DEBUG_HYPER)
961	rc = VMMR3ResumeHyper(pVM);
962	else
963	rc = VMMR3RawRunGC(pVM);
964	#ifndef DEBUG_sandervl
965	Log(("emR3RawStep: cs:eip=%RTsel:%RGr efl=%RGr - GC rc %Vrc\n", fGuest ? CPUMGetGuestCS(pVM) : CPUMGetHyperCS(pVM),
966	fGuest ? CPUMGetGuestEIP(pVM) : CPUMGetHyperEIP(pVM), fGuest ? CPUMGetGuestEFlags(pVM) : CPUMGetHyperEFlags(pVM), rc));
967	#endif
968	} while ( rc == VINF_SUCCESS
969	\|\| rc == VINF_EM_RAW_INTERRUPT);
970	rc = CPUMRawLeave(pVM, NULL, rc);
971	VM_FF_CLEAR(pVM, VM_FF_RESUME_GUEST_MASK);
972
973	/*
974	* Make sure the trap flag is cleared.
975	* (Too bad if the guest is trying to single step too.)
976	*/
977	if (fGuest)
978	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) & ~X86_EFL_TF);
979	else
980	CPUMSetHyperEFlags(pVM, CPUMGetHyperEFlags(pVM) & ~X86_EFL_TF);
981
982	/*
983	* Deal with the return codes.
984	*/
985	rc = emR3HighPriorityPostForcedActions(pVM, rc);
986	rc = emR3RawHandleRC(pVM, pCtx, rc);
987	rc = emR3RawUpdateForceFlag(pVM, pCtx, rc);
988	return rc;
989	}
990
991
992	#ifdef DEBUG
993
994	/**
995	* Steps hardware accelerated mode.
996	*
997	* @returns VBox status code.
998	* @param pVM The VM handle.
999	*/
1000	static int emR3HwAccStep(PVM pVM)
1001	{
1002	Assert(pVM->em.s.enmState == EMSTATE_DEBUG_GUEST_HWACC);
1003
1004	int rc;
1005	PCPUMCTX pCtx = pVM->em.s.pCtx;
1006	VM_FF_CLEAR(pVM, (VM_FF_SELM_SYNC_GDT \| VM_FF_SELM_SYNC_LDT \| VM_FF_TRPM_SYNC_IDT \| VM_FF_SELM_SYNC_TSS));
1007
1008	/*
1009	* Check vital forced actions, but ignore pending interrupts and timers.
1010	*/
1011	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK))
1012	{
1013	rc = emR3RawForcedActions(pVM, pCtx);
1014	if (VBOX_FAILURE(rc))
1015	return rc;
1016	}
1017	/*
1018	* Set flags for single stepping.
1019	*/
1020	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) \| X86_EFL_TF \| X86_EFL_RF);
1021
1022	/*
1023	* Single step.
1024	* We do not start time or anything, if anything we should just do a few nanoseconds.
1025	*/
1026	do
1027	{
1028	rc = VMMR3HwAccRunGC(pVM);
1029	} while ( rc == VINF_SUCCESS
1030	\|\| rc == VINF_EM_RAW_INTERRUPT);
1031	VM_FF_CLEAR(pVM, VM_FF_RESUME_GUEST_MASK);
1032
1033	/*
1034	* Make sure the trap flag is cleared.
1035	* (Too bad if the guest is trying to single step too.)
1036	*/
1037	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) & ~X86_EFL_TF);
1038
1039	/*
1040	* Deal with the return codes.
1041	*/
1042	rc = emR3HighPriorityPostForcedActions(pVM, rc);
1043	rc = emR3RawHandleRC(pVM, pCtx, rc);
1044	rc = emR3RawUpdateForceFlag(pVM, pCtx, rc);
1045	return rc;
1046	}
1047
1048
1049	void emR3SingleStepExecRaw(PVM pVM, uint32_t cIterations)
1050	{
1051	EMSTATE enmOldState = pVM->em.s.enmState;
1052
1053	pVM->em.s.enmState = EMSTATE_DEBUG_GUEST_RAW;
1054
1055	Log(("Single step BEGIN:\n"));
1056	for(uint32_t i=0;i<cIterations;i++)
1057	{
1058	DBGFR3PrgStep(pVM);
1059	DBGFR3DisasInstrCurrentLog(pVM, "RSS: ");
1060	emR3RawStep(pVM);
1061	}
1062	Log(("Single step END:\n"));
1063	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) & ~X86_EFL_TF);
1064	pVM->em.s.enmState = enmOldState;
1065	}
1066
1067
1068	void emR3SingleStepExecHwAcc(PVM pVM, uint32_t cIterations)
1069	{
1070	EMSTATE enmOldState = pVM->em.s.enmState;
1071
1072	pVM->em.s.enmState = EMSTATE_DEBUG_GUEST_HWACC;
1073
1074	Log(("Single step BEGIN:\n"));
1075	for(uint32_t i=0;i<cIterations;i++)
1076	{
1077	DBGFR3PrgStep(pVM);
1078	DBGFR3DisasInstrCurrentLog(pVM, "RSS: ");
1079	emR3HwAccStep(pVM);
1080	}
1081	Log(("Single step END:\n"));
1082	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) & ~X86_EFL_TF);
1083	pVM->em.s.enmState = enmOldState;
1084	}
1085
1086
1087	void emR3SingleStepExecRem(PVM pVM, uint32_t cIterations)
1088	{
1089	EMSTATE enmOldState = pVM->em.s.enmState;
1090
1091	pVM->em.s.enmState = EMSTATE_DEBUG_GUEST_REM;
1092
1093	Log(("Single step BEGIN:\n"));
1094	for(uint32_t i=0;i<cIterations;i++)
1095	{
1096	DBGFR3PrgStep(pVM);
1097	DBGFR3DisasInstrCurrentLog(pVM, "RSS: ");
1098	emR3RemStep(pVM);
1099	}
1100	Log(("Single step END:\n"));
1101	CPUMSetGuestEFlags(pVM, CPUMGetGuestEFlags(pVM) & ~X86_EFL_TF);
1102	pVM->em.s.enmState = enmOldState;
1103	}
1104
1105	#endif /* DEBUG */
1106
1107
1108	/**
1109	* Executes one (or perhaps a few more) instruction(s).
1110	*
1111	* @returns VBox status code suitable for EM.
1112	*
1113	* @param pVM VM handle.
1114	* @param rcGC GC return code
1115	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
1116	* instruction and prefix the log output with this text.
1117	*/
1118	#ifdef LOG_ENABLED
1119	static int emR3RawExecuteInstructionWorker(PVM pVM, int rcGC, const char *pszPrefix)
1120	#else
1121	static int emR3RawExecuteInstructionWorker(PVM pVM, int rcGC)
1122	#endif
1123	{
1124	PCPUMCTX pCtx = pVM->em.s.pCtx;
1125	int rc;
1126
1127	/*
1128	*
1129	* The simple solution is to use the recompiler.
1130	* The better solution is to disassemble the current instruction and
1131	* try handle as many as possible without using REM.
1132	*
1133	*/
1134
1135	#ifdef LOG_ENABLED
1136	/*
1137	* Disassemble the instruction if requested.
1138	*/
1139	if (pszPrefix)
1140	{
1141	DBGFR3InfoLog(pVM, "cpumguest", pszPrefix);
1142	DBGFR3DisasInstrCurrentLog(pVM, pszPrefix);
1143	}
1144	#endif /* LOG_ENABLED */
1145
1146	/*
1147	* PATM is making life more interesting.
1148	* We cannot hand anything to REM which has an EIP inside patch code. So, we'll
1149	* tell PATM there is a trap in this code and have it take the appropriate actions
1150	* to allow us execute the code in REM.
1151	*/
1152	if (PATMIsPatchGCAddr(pVM, pCtx->eip))
1153	{
1154	Log(("emR3RawExecuteInstruction: In patch block. eip=%VRv\n", pCtx->eip));
1155
1156	RTGCPTR pNewEip;
1157	rc = PATMR3HandleTrap(pVM, pCtx, pCtx->eip, &pNewEip);
1158	switch (rc)
1159	{
1160	/*
1161	* It's not very useful to emulate a single instruction and then go back to raw
1162	* mode; just execute the whole block until IF is set again.
1163	*/
1164	case VINF_SUCCESS:
1165	Log(("emR3RawExecuteInstruction: Executing instruction starting at new address %VGv IF=%d VMIF=%x\n",
1166	pNewEip, pCtx->eflags.Bits.u1IF, pVM->em.s.pPatmGCState->uVMFlags));
1167	pCtx->eip = pNewEip;
1168	Assert(pCtx->eip);
1169
1170	if (pCtx->eflags.Bits.u1IF)
1171	{
1172	/*
1173	* The last instruction in the patch block needs to be executed!! (sti/sysexit for example)
1174	*/
1175	Log(("PATCH: IF=1 -> emulate last instruction as it can't be interrupted!!\n"));
1176	return emR3RawExecuteInstruction(pVM, "PATCHIR");
1177	}
1178	else if (rcGC == VINF_PATM_PENDING_IRQ_AFTER_IRET)
1179	{
1180	/* special case: iret, that sets IF, detected a pending irq/event */
1181	return emR3RawExecuteInstruction(pVM, "PATCHIRET");
1182	}
1183	return VINF_EM_RESCHEDULE_REM;
1184
1185	/*
1186	* One instruction.
1187	*/
1188	case VINF_PATCH_EMULATE_INSTR:
1189	Log(("emR3RawExecuteInstruction: Emulate patched instruction at %VGv IF=%d VMIF=%x\n",
1190	pNewEip, pCtx->eflags.Bits.u1IF, pVM->em.s.pPatmGCState->uVMFlags));
1191	pCtx->eip = pNewEip;
1192	return emR3RawExecuteInstruction(pVM, "PATCHIR");
1193
1194	/*
1195	* The patch was disabled, hand it to the REM.
1196	*/
1197	case VERR_PATCH_DISABLED:
1198	Log(("emR3RawExecuteInstruction: Disabled patch -> new eip %VGv IF=%d VMIF=%x\n",
1199	pNewEip, pCtx->eflags.Bits.u1IF, pVM->em.s.pPatmGCState->uVMFlags));
1200	pCtx->eip = pNewEip;
1201	if (pCtx->eflags.Bits.u1IF)
1202	{
1203	/*
1204	* The last instruction in the patch block needs to be executed!! (sti/sysexit for example)
1205	*/
1206	Log(("PATCH: IF=1 -> emulate last instruction as it can't be interrupted!!\n"));
1207	return emR3RawExecuteInstruction(pVM, "PATCHIR");
1208	}
1209	return VINF_EM_RESCHEDULE_REM;
1210
1211	/* Force continued patch exection; usually due to write monitored stack. */
1212	case VINF_PATCH_CONTINUE:
1213	return VINF_SUCCESS;
1214
1215	default:
1216	AssertReleaseMsgFailed(("Unknown return code %Vrc from PATMR3HandleTrap\n", rc));
1217	return VERR_INTERNAL_ERROR;
1218	}
1219	}
1220
1221	#if 0 /// @todo Sander, this breaks the linux image (panics). So, I'm disabling it for now. (OP_MOV triggers it btw.)
1222	DISCPUSTATE Cpu;
1223	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->eip, &Cpu, "GEN EMU");
1224	if (VBOX_SUCCESS(rc))
1225	{
1226	uint32_t size;
1227
1228	switch (Cpu.pCurInstr->opcode)
1229	{
1230	case OP_MOV:
1231	case OP_AND:
1232	case OP_OR:
1233	case OP_XOR:
1234	case OP_POP:
1235	case OP_INC:
1236	case OP_DEC:
1237	case OP_XCHG:
1238	STAM_PROFILE_START(&pVM->em.s.StatMiscEmu, a);
1239	rc = EMInterpretInstructionCPU(pVM, &Cpu, CPUMCTX2CORE(pCtx), 0, &size);
1240	if (VBOX_SUCCESS(rc))
1241	{
1242	pCtx->rip += Cpu.opsize;
1243	STAM_PROFILE_STOP(&pVM->em.s.StatMiscEmu, a);
1244	return rc;
1245	}
1246	if (rc != VERR_EM_INTERPRETER)
1247	AssertMsgFailedReturn(("rc=%Vrc\n", rc), rc);
1248	STAM_PROFILE_STOP(&pVM->em.s.StatMiscEmu, a);
1249	break;
1250	}
1251	}
1252	#endif
1253	STAM_PROFILE_START(&pVM->em.s.StatREMEmu, a);
1254	rc = REMR3EmulateInstruction(pVM);
1255	STAM_PROFILE_STOP(&pVM->em.s.StatREMEmu, a);
1256
1257	return rc;
1258	}
1259
1260
1261	/**
1262	* Executes one (or perhaps a few more) instruction(s).
1263	* This is just a wrapper for discarding pszPrefix in non-logging builds.
1264	*
1265	* @returns VBox status code suitable for EM.
1266	* @param pVM VM handle.
1267	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
1268	* instruction and prefix the log output with this text.
1269	* @param rcGC GC return code
1270	*/
1271	DECLINLINE(int) emR3RawExecuteInstruction(PVM pVM, const char *pszPrefix, int rcGC)
1272	{
1273	#ifdef LOG_ENABLED
1274	return emR3RawExecuteInstructionWorker(pVM, rcGC, pszPrefix);
1275	#else
1276	return emR3RawExecuteInstructionWorker(pVM, rcGC);
1277	#endif
1278	}
1279
1280	/**
1281	* Executes one (or perhaps a few more) IO instruction(s).
1282	*
1283	* @returns VBox status code suitable for EM.
1284	* @param pVM VM handle.
1285	*/
1286	int emR3RawExecuteIOInstruction(PVM pVM)
1287	{
1288	int rc;
1289	PCPUMCTX pCtx = pVM->em.s.pCtx;
1290
1291	STAM_PROFILE_START(&pVM->em.s.StatIOEmu, a);
1292
1293	/** @todo probably we should fall back to the recompiler; otherwise we'll go back and forth between HC & GC
1294	* as io instructions tend to come in packages of more than one
1295	*/
1296	DISCPUSTATE Cpu;
1297	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->rip, &Cpu, "IO EMU");
1298	if (VBOX_SUCCESS(rc))
1299	{
1300	rc = VINF_EM_RAW_EMULATE_INSTR;
1301
1302	if (!(Cpu.prefix & (PREFIX_REP \| PREFIX_REPNE)))
1303	{
1304	switch (Cpu.pCurInstr->opcode)
1305	{
1306	case OP_IN:
1307	{
1308	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatIn);
1309	rc = IOMInterpretIN(pVM, CPUMCTX2CORE(pCtx), &Cpu);
1310	break;
1311	}
1312
1313	case OP_OUT:
1314	{
1315	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatOut);
1316	rc = IOMInterpretOUT(pVM, CPUMCTX2CORE(pCtx), &Cpu);
1317	break;
1318	}
1319	}
1320	}
1321	else if (Cpu.prefix & PREFIX_REP)
1322	{
1323	switch (Cpu.pCurInstr->opcode)
1324	{
1325	case OP_INSB:
1326	case OP_INSWD:
1327	{
1328	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatIn);
1329	rc = IOMInterpretINS(pVM, CPUMCTX2CORE(pCtx), &Cpu);
1330	break;
1331	}
1332
1333	case OP_OUTSB:
1334	case OP_OUTSWD:
1335	{
1336	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatOut);
1337	rc = IOMInterpretOUTS(pVM, CPUMCTX2CORE(pCtx), &Cpu);
1338	break;
1339	}
1340	}
1341	}
1342
1343	/*
1344	* Handled the I/O return codes.
1345	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
1346	*/
1347	if (IOM_SUCCESS(rc))
1348	{
1349	pCtx->rip += Cpu.opsize;
1350	STAM_PROFILE_STOP(&pVM->em.s.StatIOEmu, a);
1351	return rc;
1352	}
1353
1354	if (rc == VINF_EM_RAW_GUEST_TRAP)
1355	{
1356	STAM_PROFILE_STOP(&pVM->em.s.StatIOEmu, a);
1357	rc = emR3RawGuestTrap(pVM);
1358	return rc;
1359	}
1360	AssertMsg(rc != VINF_TRPM_XCPT_DISPATCHED, ("Handle VINF_TRPM_XCPT_DISPATCHED\n"));
1361
1362	if (VBOX_FAILURE(rc))
1363	{
1364	STAM_PROFILE_STOP(&pVM->em.s.StatIOEmu, a);
1365	return rc;
1366	}
1367	AssertMsg(rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RESCHEDULE_REM, ("rc=%Vrc\n", rc));
1368	}
1369	STAM_PROFILE_STOP(&pVM->em.s.StatIOEmu, a);
1370	return emR3RawExecuteInstruction(pVM, "IO: ");
1371	}
1372
1373
1374	/**
1375	* Handle a guest context trap.
1376	*
1377	* @returns VBox status code suitable for EM.
1378	* @param pVM VM handle.
1379	*/
1380	static int emR3RawGuestTrap(PVM pVM)
1381	{
1382	PCPUMCTX pCtx = pVM->em.s.pCtx;
1383
1384	/*
1385	* Get the trap info.
1386	*/
1387	uint8_t u8TrapNo;
1388	TRPMEVENT enmType;;
1389	RTGCUINT uErrorCode;
1390	RTGCUINTPTR uCR2;
1391	int rc = TRPMQueryTrapAll(pVM, &u8TrapNo, &enmType, &uErrorCode, &uCR2);
1392	if (VBOX_FAILURE(rc))
1393	{
1394	AssertReleaseMsgFailed(("No trap! (rc=%Vrc)\n", rc));
1395	return rc;
1396	}
1397
1398	/* Traps can be directly forwarded in hardware accelerated mode. */
1399	if (HWACCMR3IsActive(pVM))
1400	{
1401	#ifdef LOGGING_ENABLED
1402	DBGFR3InfoLog(pVM, "cpumguest", "Guest trap");
1403	DBGFR3DisasInstrCurrentLog(pVM, "Guest trap");
1404	#endif
1405	return VINF_EM_RESCHEDULE_HWACC;
1406	}
1407
1408	/** Scan kernel code that traps; we might not get another chance. */
1409	if ( (pCtx->ss & X86_SEL_RPL) <= 1
1410	&& !pCtx->eflags.Bits.u1VM)
1411	{
1412	Assert(!PATMIsPatchGCAddr(pVM, pCtx->eip));
1413	CSAMR3CheckCodeEx(pVM, CPUMCTX2CORE(pCtx), pCtx->eip);
1414	}
1415
1416	if (u8TrapNo == 6) /* (#UD) Invalid opcode. */
1417	{
1418	DISCPUSTATE cpu;
1419
1420	/* If MONITOR & MWAIT are supported, then interpret them here. */
1421	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->rip, &cpu, "Guest Trap (#UD): ");
1422	if ( VBOX_SUCCESS(rc)
1423	&& (cpu.pCurInstr->opcode == OP_MONITOR \|\| cpu.pCurInstr->opcode == OP_MWAIT))
1424	{
1425	uint32_t u32Dummy, u32Features, u32ExtFeatures, size;
1426
1427	CPUMGetGuestCpuId(pVM, 1, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Features);
1428
1429	if (u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR)
1430	{
1431	rc = TRPMResetTrap(pVM);
1432	AssertRC(rc);
1433
1434	rc = EMInterpretInstructionCPU(pVM, &cpu, CPUMCTX2CORE(pCtx), 0, &size);
1435	if (VBOX_SUCCESS(rc))
1436	{
1437	pCtx->rip += cpu.opsize;
1438	return rc;
1439	}
1440	return emR3RawExecuteInstruction(pVM, "Monitor: ");
1441	}
1442	}
1443	}
1444	else if (u8TrapNo == 13) /* (#GP) Privileged exception */
1445	{
1446	DISCPUSTATE cpu;
1447
1448	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->rip, &cpu, "Guest Trap: ");
1449	if (VBOX_SUCCESS(rc) && (cpu.pCurInstr->optype & OPTYPE_PORTIO))
1450	{
1451	/*
1452	* We should really check the TSS for the IO bitmap, but it's not like this
1453	* lazy approach really makes things worse.
1454	*/
1455	rc = TRPMResetTrap(pVM);
1456	AssertRC(rc);
1457	return emR3RawExecuteInstruction(pVM, "IO Guest Trap: ");
1458	}
1459	}
1460
1461	#ifdef LOG_ENABLED
1462	DBGFR3InfoLog(pVM, "cpumguest", "Guest trap");
1463	DBGFR3DisasInstrCurrentLog(pVM, "Guest trap");
1464
1465	/* Get guest page information. */
1466	uint64_t fFlags = 0;
1467	RTGCPHYS GCPhys = 0;
1468	int rc2 = PGMGstGetPage(pVM, uCR2, &fFlags, &GCPhys);
1469	Log(("emR3RawGuestTrap: cs:eip=%04x:%08x: trap=%02x err=%08x cr2=%08x cr0=%08x%s: Phys=%VGp fFlags=%08llx %s %s %s%s rc2=%d\n",
1470	pCtx->cs, pCtx->eip, u8TrapNo, uErrorCode, uCR2, (uint32_t)pCtx->cr0, (enmType == TRPM_SOFTWARE_INT) ? " software" : "", GCPhys, fFlags,
1471	fFlags & X86_PTE_P ? "P " : "NP", fFlags & X86_PTE_US ? "U" : "S",
1472	fFlags & X86_PTE_RW ? "RW" : "R0", fFlags & X86_PTE_G ? " G" : "", rc2));
1473	#endif
1474
1475	/*
1476	* #PG has CR2.
1477	* (Because of stuff like above we must set CR2 in a delayed fashion.)
1478	*/
1479	if (u8TrapNo == 14 /* #PG */)
1480	pCtx->cr2 = uCR2;
1481
1482	return VINF_EM_RESCHEDULE_REM;
1483	}
1484
1485
1486	/**
1487	* Handle a ring switch trap.
1488	* Need to do statistics and to install patches. The result is going to REM.
1489	*
1490	* @returns VBox status code suitable for EM.
1491	* @param pVM VM handle.
1492	*/
1493	int emR3RawRingSwitch(PVM pVM)
1494	{
1495	int rc;
1496	DISCPUSTATE Cpu;
1497	PCPUMCTX pCtx = pVM->em.s.pCtx;
1498
1499	/*
1500	* sysenter, syscall & callgate
1501	*/
1502	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->rip, &Cpu, "RSWITCH: ");
1503	if (VBOX_SUCCESS(rc))
1504	{
1505	if (Cpu.pCurInstr->opcode == OP_SYSENTER)
1506	{
1507	if (pCtx->SysEnter.cs != 0)
1508	{
1509	rc = PATMR3InstallPatch(pVM, SELMToFlat(pVM, DIS_SELREG_CS, CPUMCTX2CORE(pCtx), pCtx->eip),
1510	(SELMGetCpuModeFromSelector(pVM, pCtx->eflags, pCtx->cs, &pCtx->csHid) == CPUMODE_32BIT) ? PATMFL_CODE32 : 0);
1511	if (VBOX_SUCCESS(rc))
1512	{
1513	DBGFR3DisasInstrCurrentLog(pVM, "Patched sysenter instruction");
1514	return VINF_EM_RESCHEDULE_RAW;
1515	}
1516	}
1517	}
1518
1519	#ifdef VBOX_WITH_STATISTICS
1520	switch (Cpu.pCurInstr->opcode)
1521	{
1522	case OP_SYSENTER:
1523	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatSysEnter);
1524	break;
1525	case OP_SYSEXIT:
1526	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatSysExit);
1527	break;
1528	case OP_SYSCALL:
1529	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatSysCall);
1530	break;
1531	case OP_SYSRET:
1532	STAM_COUNTER_INC(&pVM->em.s.CTXSUFF(pStats)->StatSysRet);
1533	break;
1534	}
1535	#endif
1536	}
1537	else
1538	AssertRC(rc);
1539
1540	/* go to the REM to emulate a single instruction */
1541	return emR3RawExecuteInstruction(pVM, "RSWITCH: ");
1542	}
1543
1544	/**
1545	* Handle a trap (#PF or #GP) in patch code
1546	*
1547	* @returns VBox status code suitable for EM.
1548	* @param pVM VM handle.
1549	* @param pCtx CPU context
1550	* @param gcret GC return code
1551	*/
1552	int emR3PatchTrap(PVM pVM, PCPUMCTX pCtx, int gcret)
1553	{
1554	uint8_t u8TrapNo;
1555	int rc;
1556	TRPMEVENT enmType;
1557	RTGCUINT uErrorCode;
1558	RTGCUINTPTR uCR2;
1559
1560	Assert(PATMIsPatchGCAddr(pVM, pCtx->eip));
1561
1562	if (gcret == VINF_PATM_PATCH_INT3)
1563	{
1564	u8TrapNo = 3;
1565	uCR2 = 0;
1566	uErrorCode = 0;
1567	}
1568	else
1569	if (gcret == VINF_PATM_PATCH_TRAP_GP)
1570	{
1571	/* No active trap in this case. Kind of ugly. */
1572	u8TrapNo = X86_XCPT_GP;
1573	uCR2 = 0;
1574	uErrorCode = 0;
1575	}
1576	else
1577	{
1578	rc = TRPMQueryTrapAll(pVM, &u8TrapNo, &enmType, &uErrorCode, &uCR2);
1579	if (VBOX_FAILURE(rc))
1580	{
1581	AssertReleaseMsgFailed(("emR3PatchTrap: no trap! (rc=%Vrc) gcret=%Vrc\n", rc, gcret));
1582	return rc;
1583	}
1584	/* Reset the trap as we'll execute the original instruction again. */
1585	TRPMResetTrap(pVM);
1586	}
1587
1588	/*
1589	* Deal with traps inside patch code.
1590	* (This code won't run outside GC.)
1591	*/
1592	if (u8TrapNo != 1)
1593	{
1594	#ifdef LOG_ENABLED
1595	DBGFR3InfoLog(pVM, "cpumguest", "Trap in patch code");
1596	DBGFR3DisasInstrCurrentLog(pVM, "Patch code");
1597
1598	DISCPUSTATE Cpu;
1599	int rc;
1600
1601	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->eip, &Cpu, "Patch code: ");
1602	if ( VBOX_SUCCESS(rc)
1603	&& Cpu.pCurInstr->opcode == OP_IRET)
1604	{
1605	uint32_t eip, selCS, uEFlags;
1606
1607	/* Iret crashes are bad as we have already changed the flags on the stack */
1608	rc = PGMPhysReadGCPtr(pVM, &eip, pCtx->esp, 4);
1609	rc \|= PGMPhysReadGCPtr(pVM, &selCS, pCtx->esp+4, 4);
1610	rc \|= PGMPhysReadGCPtr(pVM, &uEFlags, pCtx->esp+8, 4);
1611	if (rc == VINF_SUCCESS)
1612	{
1613	if ( (uEFlags & X86_EFL_VM)
1614	\|\| (selCS & X86_SEL_RPL) == 3)
1615	{
1616	uint32_t selSS, esp;
1617
1618	rc \|= PGMPhysReadGCPtr(pVM, &esp, pCtx->esp + 12, 4);
1619	rc \|= PGMPhysReadGCPtr(pVM, &selSS, pCtx->esp + 16, 4);
1620
1621	if (uEFlags & X86_EFL_VM)
1622	{
1623	uint32_t selDS, selES, selFS, selGS;
1624	rc = PGMPhysReadGCPtr(pVM, &selES, pCtx->esp + 20, 4);
1625	rc \|= PGMPhysReadGCPtr(pVM, &selDS, pCtx->esp + 24, 4);
1626	rc \|= PGMPhysReadGCPtr(pVM, &selFS, pCtx->esp + 28, 4);
1627	rc \|= PGMPhysReadGCPtr(pVM, &selGS, pCtx->esp + 32, 4);
1628	if (rc == VINF_SUCCESS)
1629	{
1630	Log(("Patch code: IRET->VM stack frame: return address %04X:%VGv eflags=%08x ss:esp=%04X:%VGv\n", selCS, eip, uEFlags, selSS, esp));
1631	Log(("Patch code: IRET->VM stack frame: DS=%04X ES=%04X FS=%04X GS=%04X\n", selDS, selES, selFS, selGS));
1632	}
1633	}
1634	else
1635	Log(("Patch code: IRET stack frame: return address %04X:%VGv eflags=%08x ss:esp=%04X:%VGv\n", selCS, eip, uEFlags, selSS, esp));
1636	}
1637	else
1638	Log(("Patch code: IRET stack frame: return address %04X:%VGv eflags=%08x\n", selCS, eip, uEFlags));
1639	}
1640	}
1641	#endif
1642	Log(("emR3PatchTrap: in patch: eip=%08x: trap=%02x err=%08x cr2=%08x cr0=%08x\n",
1643	pCtx->eip, u8TrapNo, uErrorCode, uCR2, (uint32_t)pCtx->cr0));
1644
1645	RTGCPTR pNewEip;
1646	rc = PATMR3HandleTrap(pVM, pCtx, pCtx->eip, &pNewEip);
1647	switch (rc)
1648	{
1649	/*
1650	* Execute the faulting instruction.
1651	*/
1652	case VINF_SUCCESS:
1653	{
1654	/** @todo execute a whole block */
1655	Log(("emR3PatchTrap: Executing faulting instruction at new address %VGv\n", pNewEip));
1656	if (!(pVM->em.s.pPatmGCState->uVMFlags & X86_EFL_IF))
1657	Log(("emR3PatchTrap: Virtual IF flag disabled!!\n"));
1658
1659	pCtx->eip = pNewEip;
1660	AssertRelease(pCtx->eip);
1661
1662	if (pCtx->eflags.Bits.u1IF)
1663	{
1664	/* Windows XP lets irets fault intentionally and then takes action based on the opcode; an
1665	* int3 patch overwrites it and leads to blue screens. Remove the patch in this case.
1666	*/
1667	if ( u8TrapNo == X86_XCPT_GP
1668	&& PATMIsInt3Patch(pVM, pCtx->eip, NULL, NULL))
1669	{
1670	/** @todo move to PATMR3HandleTrap */
1671	Log(("Possible Windows XP iret fault at %VGv\n", pCtx->eip));
1672	PATMR3RemovePatch(pVM, pCtx->eip);
1673	}
1674
1675	/** @todo Knoppix 5 regression when returning VINF_SUCCESS here and going back to raw mode. */
1676	/** @note possibly because a reschedule is required (e.g. iret to V86 code) */
1677
1678	return emR3RawExecuteInstruction(pVM, "PATCHIR");
1679	/* Interrupts are enabled; just go back to the original instruction.
1680	return VINF_SUCCESS; */
1681	}
1682	return VINF_EM_RESCHEDULE_REM;
1683	}
1684
1685	/*
1686	* One instruction.
1687	*/
1688	case VINF_PATCH_EMULATE_INSTR:
1689	Log(("emR3PatchTrap: Emulate patched instruction at %VGv IF=%d VMIF=%x\n",
1690	pNewEip, pCtx->eflags.Bits.u1IF, pVM->em.s.pPatmGCState->uVMFlags));
1691	pCtx->eip = pNewEip;
1692	AssertRelease(pCtx->eip);
1693	return emR3RawExecuteInstruction(pVM, "PATCHEMUL: ");
1694
1695	/*
1696	* The patch was disabled, hand it to the REM.
1697	*/
1698	case VERR_PATCH_DISABLED:
1699	if (!(pVM->em.s.pPatmGCState->uVMFlags & X86_EFL_IF))
1700	Log(("emR3PatchTrap: Virtual IF flag disabled!!\n"));
1701	pCtx->eip = pNewEip;
1702	AssertRelease(pCtx->eip);
1703
1704	if (pCtx->eflags.Bits.u1IF)
1705	{
1706	/*
1707	* The last instruction in the patch block needs to be executed!! (sti/sysexit for example)
1708	*/
1709	Log(("PATCH: IF=1 -> emulate last instruction as it can't be interrupted!!\n"));
1710	return emR3RawExecuteInstruction(pVM, "PATCHIR");
1711	}
1712	return VINF_EM_RESCHEDULE_REM;
1713
1714	/* Force continued patch exection; usually due to write monitored stack. */
1715	case VINF_PATCH_CONTINUE:
1716	return VINF_SUCCESS;
1717
1718	/*
1719	* Anything else is fatal.
1720	*/
1721	default:
1722	AssertReleaseMsgFailed(("Unknown return code %Vrc from PATMR3HandleTrap!\n", rc));
1723	return VERR_INTERNAL_ERROR;
1724	}
1725	}
1726	return VINF_SUCCESS;
1727	}
1728
1729
1730	/**
1731	* Handle a privileged instruction.
1732	*
1733	* @returns VBox status code suitable for EM.
1734	* @param pVM VM handle.
1735	*/
1736	int emR3RawPrivileged(PVM pVM)
1737	{
1738	STAM_PROFILE_START(&pVM->em.s.StatPrivEmu, a);
1739	PCPUMCTX pCtx = pVM->em.s.pCtx;
1740
1741	Assert(!pCtx->eflags.Bits.u1VM);
1742
1743	if (PATMIsEnabled(pVM))
1744	{
1745	/*
1746	* Check if in patch code.
1747	*/
1748	if (PATMR3IsInsidePatchJump(pVM, pCtx->eip, NULL))
1749	{
1750	#ifdef LOG_ENABLED
1751	DBGFR3InfoLog(pVM, "cpumguest", "PRIV");
1752	#endif
1753	AssertMsgFailed(("FATAL ERROR: executing random instruction inside generated patch jump %08X\n", pCtx->eip));
1754	return VERR_EM_RAW_PATCH_CONFLICT;
1755	}
1756	if ( (pCtx->ss & X86_SEL_RPL) == 0
1757	&& !pCtx->eflags.Bits.u1VM
1758	&& !PATMIsPatchGCAddr(pVM, pCtx->eip))
1759	{
1760	int rc = PATMR3InstallPatch(pVM, SELMToFlat(pVM, DIS_SELREG_CS, CPUMCTX2CORE(pCtx), pCtx->eip),
1761	(SELMGetCpuModeFromSelector(pVM, pCtx->eflags, pCtx->cs, &pCtx->csHid) == CPUMODE_32BIT) ? PATMFL_CODE32 : 0);
1762	if (VBOX_SUCCESS(rc))
1763	{
1764	#ifdef LOG_ENABLED
1765	DBGFR3InfoLog(pVM, "cpumguest", "PRIV");
1766	#endif
1767	DBGFR3DisasInstrCurrentLog(pVM, "Patched privileged instruction");
1768	return VINF_SUCCESS;
1769	}
1770	}
1771	}
1772
1773	#ifdef LOG_ENABLED
1774	if (!PATMIsPatchGCAddr(pVM, pCtx->eip))
1775	{
1776	DBGFR3InfoLog(pVM, "cpumguest", "PRIV");
1777	DBGFR3DisasInstrCurrentLog(pVM, "Privileged instr: ");
1778	}
1779	#endif
1780
1781	/*
1782	* Instruction statistics and logging.
1783	*/
1784	DISCPUSTATE Cpu;
1785	int rc;
1786
1787	rc = CPUMR3DisasmInstrCPU(pVM, pCtx, pCtx->rip, &Cpu, "PRIV: ");
1788	if (VBOX_SUCCESS(rc))
1789	{
1790	#ifdef VBOX_WITH_STATISTICS
1791	PEMSTATS pStats = pVM->em.s.CTXSUFF(pStats);
1792	switch (Cpu.pCurInstr->opcode)
1793	{
1794	case OP_INVLPG:
1795	STAM_COUNTER_INC(&pStats->StatInvlpg);
1796	break;
1797	case OP_IRET:
1798	STAM_COUNTER_INC(&pStats->StatIret);
1799	break;
1800	case OP_CLI:
1801	STAM_COUNTER_INC(&pStats->StatCli);
1802	emR3RecordCli(pVM, pCtx->rip);
1803	break;
1804	case OP_STI:
1805	STAM_COUNTER_INC(&pStats->StatSti);
1806	break;
1807	case OP_INSB:
1808	case OP_INSWD:
1809	case OP_IN:
1810	case OP_OUTSB:
1811	case OP_OUTSWD:
1812	case OP_OUT:
1813	AssertMsgFailed(("Unexpected privileged exception due to port IO\n"));
1814	break;
1815
1816	case OP_MOV_CR:
1817	if (Cpu.param1.flags & USE_REG_GEN32)
1818	{
1819	//read
1820	Assert(Cpu.param2.flags & USE_REG_CR);
1821	Assert(Cpu.param2.base.reg_ctrl <= USE_REG_CR4);
1822	STAM_COUNTER_INC(&pStats->StatMovReadCR[Cpu.param2.base.reg_ctrl]);
1823	}
1824	else
1825	{
1826	//write
1827	Assert(Cpu.param1.flags & USE_REG_CR);
1828	Assert(Cpu.param1.base.reg_ctrl <= USE_REG_CR4);
1829	STAM_COUNTER_INC(&pStats->StatMovWriteCR[Cpu.param1.base.reg_ctrl]);
1830	}
1831	break;
1832
1833	case OP_MOV_DR:
1834	STAM_COUNTER_INC(&pStats->StatMovDRx);
1835	break;
1836	case OP_LLDT:
1837	STAM_COUNTER_INC(&pStats->StatMovLldt);
1838	break;
1839	case OP_LIDT:
1840	STAM_COUNTER_INC(&pStats->StatMovLidt);
1841	break;
1842	case OP_LGDT:
1843	STAM_COUNTER_INC(&pStats->StatMovLgdt);
1844	break;
1845	case OP_SYSENTER:
1846	STAM_COUNTER_INC(&pStats->StatSysEnter);
1847	break;
1848	case OP_SYSEXIT:
1849	STAM_COUNTER_INC(&pStats->StatSysExit);
1850	break;
1851	case OP_SYSCALL:
1852	STAM_COUNTER_INC(&pStats->StatSysCall);
1853	break;
1854	case OP_SYSRET:
1855	STAM_COUNTER_INC(&pStats->StatSysRet);
1856	break;
1857	case OP_HLT:
1858	STAM_COUNTER_INC(&pStats->StatHlt);
1859	break;
1860	default:
1861	STAM_COUNTER_INC(&pStats->StatMisc);
1862	Log4(("emR3RawPrivileged: opcode=%d\n", Cpu.pCurInstr->opcode));
1863	break;
1864	}
1865	#endif
1866	if ( (pCtx->ss & X86_SEL_RPL) == 0
1867	&& !pCtx->eflags.Bits.u1VM
1868	&& SELMGetCpuModeFromSelector(pVM, pCtx->eflags, pCtx->cs, &pCtx->csHid) == CPUMODE_32BIT)
1869	{
1870	uint32_t size;
1871
1872	STAM_PROFILE_START(&pVM->em.s.StatPrivEmu, a);
1873	switch (Cpu.pCurInstr->opcode)
1874	{
1875	case OP_CLI:
1876	pCtx->eflags.u32 &= ~X86_EFL_IF;
1877	Assert(Cpu.opsize == 1);
1878	pCtx->rip += Cpu.opsize;
1879	STAM_PROFILE_STOP(&pVM->em.s.StatPrivEmu, a);
1880	return VINF_EM_RESCHEDULE_REM; /* must go to the recompiler now! */
1881
1882	case OP_STI:
1883	pCtx->eflags.u32 \|= X86_EFL_IF;
1884	EMSetInhibitInterruptsPC(pVM, pCtx->rip + Cpu.opsize);
1885	Assert(Cpu.opsize == 1);
1886	pCtx->rip += Cpu.opsize;
1887	STAM_PROFILE_STOP(&pVM->em.s.StatPrivEmu, a);
1888	return VINF_SUCCESS;
1889
1890	case OP_HLT:
1891	if (PATMIsPatchGCAddr(pVM, (RTGCPTR)pCtx->eip))
1892	{
1893	PATMTRANSSTATE enmState;
1894	RTGCPTR pOrgInstrGC = PATMR3PatchToGCPtr(pVM, pCtx->eip, &enmState);
1895
1896	if (enmState == PATMTRANS_OVERWRITTEN)
1897	{
1898	rc = PATMR3DetectConflict(pVM, pOrgInstrGC, pOrgInstrGC);
1899	Assert(rc == VERR_PATCH_DISABLED);
1900	/* Conflict detected, patch disabled */
1901	Log(("emR3RawPrivileged: detected conflict -> disabled patch at %VGv\n", pCtx->eip));
1902
1903	enmState = PATMTRANS_SAFE;
1904	}
1905
1906	/* The translation had better be successful. Otherwise we can't recover. */
1907	AssertReleaseMsg(pOrgInstrGC && enmState != PATMTRANS_OVERWRITTEN, ("Unable to translate instruction address at %VGv\n", pCtx->eip));
1908	if (enmState != PATMTRANS_OVERWRITTEN)
1909	pCtx->eip = pOrgInstrGC;
1910	}
1911	/* no break; we could just return VINF_EM_HALT here */
1912
1913	case OP_MOV_CR:
1914	case OP_MOV_DR:
1915	#ifdef LOG_ENABLED
1916	if (PATMIsPatchGCAddr(pVM, pCtx->eip))
1917	{
1918	DBGFR3InfoLog(pVM, "cpumguest", "PRIV");
1919	DBGFR3DisasInstrCurrentLog(pVM, "Privileged instr: ");
1920	}
1921	#endif
1922
1923	rc = EMInterpretInstructionCPU(pVM, &Cpu, CPUMCTX2CORE(pCtx), 0, &size);
1924	if (VBOX_SUCCESS(rc))
1925	{
1926	pCtx->rip += Cpu.opsize;
1927	STAM_PROFILE_STOP(&pVM->em.s.StatPrivEmu, a);
1928
1929	if ( Cpu.pCurInstr->opcode == OP_MOV_CR
1930	&& Cpu.param1.flags == USE_REG_CR /* write */
1931	)
1932	{
1933	/* Reschedule is necessary as the execution/paging mode might have changed. */
1934	return VINF_EM_RESCHEDULE;
1935	}
1936	return rc; /* can return VINF_EM_HALT as well. */
1937	}
1938	AssertMsgReturn(rc == VERR_EM_INTERPRETER, ("%Vrc\n", rc), rc);
1939	break; /* fall back to the recompiler */
1940	}
1941	STAM_PROFILE_STOP(&pVM->em.s.StatPrivEmu, a);
1942	}
1943	}
1944
1945	if (PATMIsPatchGCAddr(pVM, pCtx->eip))
1946	return emR3PatchTrap(pVM, pCtx, VINF_PATM_PATCH_TRAP_GP);
1947
1948	return emR3RawExecuteInstruction(pVM, "PRIV");
1949	}
1950
1951
1952	/**
1953	* Update the forced rawmode execution modifier.
1954	*
1955	* This function is called when we're returning from the raw-mode loop(s). If we're
1956	* in patch code, it will set a flag forcing execution to be resumed in raw-mode,
1957	* if not in patch code, the flag will be cleared.
1958	*
1959	* We should never interrupt patch code while it's being executed. Cli patches can
1960	* contain big code blocks, but they are always executed with IF=0. Other patches
1961	* replace single instructions and should be atomic.
1962	*
1963	* @returns Updated rc.
1964	*
1965	* @param pVM The VM handle.
1966	* @param pCtx The guest CPU context.
1967	* @param rc The result code.
1968	*/
1969	DECLINLINE(int) emR3RawUpdateForceFlag(PVM pVM, PCPUMCTX pCtx, int rc)
1970	{
1971	if (PATMIsPatchGCAddr(pVM, pCtx->eip)) /** @todo check cs selector base/type */
1972	{
1973	/* ignore reschedule attempts. */
1974	switch (rc)
1975	{
1976	case VINF_EM_RESCHEDULE:
1977	case VINF_EM_RESCHEDULE_REM:
1978	rc = VINF_SUCCESS;
1979	break;
1980	}
1981	pVM->em.s.fForceRAW = true;
1982	}
1983	else
1984	pVM->em.s.fForceRAW = false;
1985	return rc;
1986	}
1987
1988
1989	/**
1990	* Process a subset of the raw-mode return code.
1991	*
1992	* Since we have to share this with raw-mode single stepping, this inline
1993	* function has been created to avoid code duplication.
1994	*
1995	* @returns VINF_SUCCESS if it's ok to continue raw mode.
1996	* @returns VBox status code to return to the EM main loop.
1997	*
1998	* @param pVM The VM handle
1999	* @param rc The return code.
2000	* @param pCtx The guest cpu context.
2001	*/
2002	DECLINLINE(int) emR3RawHandleRC(PVM pVM, PCPUMCTX pCtx, int rc)
2003	{
2004	switch (rc)
2005	{
2006	/*
2007	* Common & simple ones.
2008	*/
2009	case VINF_SUCCESS:
2010	break;
2011	case VINF_EM_RESCHEDULE_RAW:
2012	case VINF_EM_RESCHEDULE_HWACC:
2013	case VINF_EM_RAW_INTERRUPT:
2014	case VINF_EM_RAW_TO_R3:
2015	case VINF_EM_RAW_TIMER_PENDING:
2016	case VINF_EM_PENDING_REQUEST:
2017	rc = VINF_SUCCESS;
2018	break;
2019
2020	/*
2021	* Privileged instruction.
2022	*/
2023	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
2024	case VINF_PATM_PATCH_TRAP_GP:
2025	rc = emR3RawPrivileged(pVM);
2026	break;
2027
2028	/*
2029	* Got a trap which needs dispatching.
2030	*/
2031	case VINF_EM_RAW_GUEST_TRAP:
2032	if (PATMR3IsInsidePatchJump(pVM, pCtx->eip, NULL))
2033	{
2034	AssertReleaseMsgFailed(("FATAL ERROR: executing random instruction inside generated patch jump %08X\n", CPUMGetGuestEIP(pVM)));
2035	rc = VERR_EM_RAW_PATCH_CONFLICT;
2036	break;
2037	}
2038
2039	Assert(TRPMHasTrap(pVM));
2040	Assert(!PATMIsPatchGCAddr(pVM, (RTGCPTR)pCtx->eip));
2041
2042	if (TRPMHasTrap(pVM))
2043	{
2044	uint8_t u8Interrupt;
2045	RTGCUINT uErrorCode;
2046	TRPMERRORCODE enmError = TRPM_TRAP_NO_ERRORCODE;
2047
2048	rc = TRPMQueryTrapAll(pVM, &u8Interrupt, NULL, &uErrorCode, NULL);
2049	AssertRC(rc);
2050
2051	if (uErrorCode != ~0U)
2052	enmError = TRPM_TRAP_HAS_ERRORCODE;
2053
2054	/* If the guest gate is marked unpatched, then we will check again if we can patch it. */
2055	if (TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) == TRPM_INVALID_HANDLER)
2056	{
2057	CSAMR3CheckGates(pVM, u8Interrupt, 1);
2058	Log(("emR3RawHandleRC: recheck gate %x -> valid=%d\n", u8Interrupt, TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) != TRPM_INVALID_HANDLER));
2059
2060	/** If it was successful, then we could go back to raw mode. */
2061	if (TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) != TRPM_INVALID_HANDLER)
2062	{
2063	/* Must check pending forced actions as our IDT or GDT might be out of sync */
2064	EMR3CheckRawForcedActions(pVM);
2065
2066	rc = TRPMForwardTrap(pVM, CPUMCTX2CORE(pCtx), u8Interrupt, uErrorCode, enmError, TRPM_TRAP, -1);
2067	if (rc == VINF_SUCCESS /* Don't use VBOX_SUCCESS */)
2068	{
2069	TRPMResetTrap(pVM);
2070	return VINF_EM_RESCHEDULE_RAW;
2071	}
2072	}
2073	}
2074	}
2075	rc = emR3RawGuestTrap(pVM);
2076	break;
2077
2078	/*
2079	* Trap in patch code.
2080	*/
2081	case VINF_PATM_PATCH_TRAP_PF:
2082	case VINF_PATM_PATCH_INT3:
2083	rc = emR3PatchTrap(pVM, pCtx, rc);
2084	break;
2085
2086	case VINF_PATM_DUPLICATE_FUNCTION:
2087	Assert(PATMIsPatchGCAddr(pVM, (RTGCPTR)pCtx->eip));
2088	rc = PATMR3DuplicateFunctionRequest(pVM, pCtx);
2089	AssertRC(rc);
2090	rc = VINF_SUCCESS;
2091	break;
2092
2093	case VINF_PATM_CHECK_PATCH_PAGE:
2094	rc = PATMR3HandleMonitoredPage(pVM);
2095	AssertRC(rc);
2096	rc = VINF_SUCCESS;
2097	break;
2098
2099	/*
2100	* Patch manager.
2101	*/
2102	case VERR_EM_RAW_PATCH_CONFLICT:
2103	AssertReleaseMsgFailed(("%Vrc handling is not yet implemented\n", rc));
2104	break;
2105
2106	/*
2107	* Memory mapped I/O access - attempt to patch the instruction
2108	*/
2109	case VINF_PATM_HC_MMIO_PATCH_READ:
2110	rc = PATMR3InstallPatch(pVM, SELMToFlat(pVM, DIS_SELREG_CS, CPUMCTX2CORE(pCtx), pCtx->eip),
2111	PATMFL_MMIO_ACCESS \| ((SELMGetCpuModeFromSelector(pVM, pCtx->eflags, pCtx->cs, &pCtx->csHid) == CPUMODE_32BIT) ? PATMFL_CODE32 : 0));
2112	if (VBOX_FAILURE(rc))
2113	rc = emR3RawExecuteInstruction(pVM, "MMIO");
2114	break;
2115
2116	case VINF_PATM_HC_MMIO_PATCH_WRITE:
2117	AssertFailed(); /* not yet implemented. */
2118	rc = emR3RawExecuteInstruction(pVM, "MMIO");
2119	break;
2120
2121	/*
2122	* Conflict or out of page tables.
2123	*
2124	* VM_FF_PGM_SYNC_CR3 is set by the hypervisor and all we need to
2125	* do here is to execute the pending forced actions.
2126	*/
2127	case VINF_PGM_SYNC_CR3:
2128	AssertMsg(VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL),
2129	("VINF_PGM_SYNC_CR3 and no VM_FF_PGM_SYNC_CR3*!\n"));
2130	rc = VINF_SUCCESS;
2131	break;
2132
2133	/*
2134	* Paging mode change.
2135	*/
2136	case VINF_PGM_CHANGE_MODE:
2137	rc = PGMChangeMode(pVM, pCtx->cr0, pCtx->cr4, pCtx->msrEFER);
2138	if (VBOX_SUCCESS(rc))
2139	rc = VINF_EM_RESCHEDULE;
2140	break;
2141
2142	/*
2143	* CSAM wants to perform a task in ring-3. It has set an FF action flag.
2144	*/
2145	case VINF_CSAM_PENDING_ACTION:
2146	rc = VINF_SUCCESS;
2147	break;
2148
2149	/*
2150	* Invoked Interrupt gate - must directly (!) go to the recompiler.
2151	*/
2152	case VINF_EM_RAW_INTERRUPT_PENDING:
2153	case VINF_EM_RAW_RING_SWITCH_INT:
2154	{
2155	uint8_t u8Interrupt;
2156
2157	Assert(TRPMHasTrap(pVM));
2158	Assert(!PATMIsPatchGCAddr(pVM, (RTGCPTR)pCtx->eip));
2159
2160	if (TRPMHasTrap(pVM))
2161	{
2162	u8Interrupt = TRPMGetTrapNo(pVM);
2163
2164	/* If the guest gate is marked unpatched, then we will check again if we can patch it. */
2165	if (TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) == TRPM_INVALID_HANDLER)
2166	{
2167	CSAMR3CheckGates(pVM, u8Interrupt, 1);
2168	Log(("emR3RawHandleRC: recheck gate %x -> valid=%d\n", u8Interrupt, TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) != TRPM_INVALID_HANDLER));
2169	/** @note If it was successful, then we could go back to raw mode, but let's keep things simple for now. */
2170	}
2171	}
2172	rc = VINF_EM_RESCHEDULE_REM;
2173	break;
2174	}
2175
2176	/*
2177	* Other ring switch types.
2178	*/
2179	case VINF_EM_RAW_RING_SWITCH:
2180	rc = emR3RawRingSwitch(pVM);
2181	break;
2182
2183	/*
2184	* REMGCNotifyInvalidatePage() failed because of overflow.
2185	*/
2186	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
2187	Assert((pCtx->ss & X86_SEL_RPL) != 1);
2188	REMR3ReplayInvalidatedPages(pVM);
2189	rc = VINF_SUCCESS;
2190	break;
2191
2192	/*
2193	* I/O Port access - emulate the instruction.
2194	*/
2195	case VINF_IOM_HC_IOPORT_READ:
2196	case VINF_IOM_HC_IOPORT_WRITE:
2197	rc = emR3RawExecuteIOInstruction(pVM);
2198	break;
2199
2200	/*
2201	* Memory mapped I/O access - emulate the instruction.
2202	*/
2203	case VINF_IOM_HC_MMIO_READ:
2204	case VINF_IOM_HC_MMIO_WRITE:
2205	case VINF_IOM_HC_MMIO_READ_WRITE:
2206	rc = emR3RawExecuteInstruction(pVM, "MMIO");
2207	break;
2208
2209	/*
2210	* Execute instruction.
2211	*/
2212	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
2213	rc = emR3RawExecuteInstruction(pVM, "LDT FAULT: ");
2214	break;
2215	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
2216	rc = emR3RawExecuteInstruction(pVM, "GDT FAULT: ");
2217	break;
2218	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
2219	rc = emR3RawExecuteInstruction(pVM, "IDT FAULT: ");
2220	break;
2221	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
2222	rc = emR3RawExecuteInstruction(pVM, "TSS FAULT: ");
2223	break;
2224	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
2225	rc = emR3RawExecuteInstruction(pVM, "PD FAULT: ");
2226	break;
2227
2228	case VINF_EM_RAW_EMULATE_INSTR_HLT:
2229	/** @todo skip instruction and go directly to the halt state. (see REM for implementation details) */
2230	rc = emR3RawPrivileged(pVM);
2231	break;
2232
2233	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
2234	rc = emR3RawExecuteInstruction(pVM, "EMUL: ", VINF_PATM_PENDING_IRQ_AFTER_IRET);
2235	break;
2236
2237	case VINF_EM_RAW_EMULATE_INSTR:
2238	case VINF_PATCH_EMULATE_INSTR:
2239	rc = emR3RawExecuteInstruction(pVM, "EMUL: ");
2240	break;
2241
2242	/*
2243	* Stale selector and iret traps => REM.
2244	*/
2245	case VINF_EM_RAW_STALE_SELECTOR:
2246	case VINF_EM_RAW_IRET_TRAP:
2247	/* We will not go to the recompiler if EIP points to patch code. */
2248	if (PATMIsPatchGCAddr(pVM, pCtx->eip))
2249	{
2250	pCtx->eip = PATMR3PatchToGCPtr(pVM, (RTGCPTR)pCtx->eip, 0);
2251	}
2252	LogFlow(("emR3RawHandleRC: %Vrc -> %Vrc\n", rc, VINF_EM_RESCHEDULE_REM));
2253	rc = VINF_EM_RESCHEDULE_REM;
2254	break;
2255
2256	/*
2257	* Up a level.
2258	*/
2259	case VINF_EM_TERMINATE:
2260	case VINF_EM_OFF:
2261	case VINF_EM_RESET:
2262	case VINF_EM_SUSPEND:
2263	case VINF_EM_HALT:
2264	case VINF_EM_RESUME:
2265	case VINF_EM_RESCHEDULE:
2266	case VINF_EM_RESCHEDULE_REM:
2267	break;
2268
2269	/*
2270	* Up a level and invoke the debugger.
2271	*/
2272	case VINF_EM_DBG_STEPPED:
2273	case VINF_EM_DBG_BREAKPOINT:
2274	case VINF_EM_DBG_STEP:
2275	case VINF_EM_DBG_HYPER_ASSERTION:
2276	case VINF_EM_DBG_HYPER_BREAKPOINT:
2277	case VINF_EM_DBG_HYPER_STEPPED:
2278	case VINF_EM_DBG_STOP:
2279	break;
2280
2281	/*
2282	* Up a level, dump and debug.
2283	*/
2284	case VERR_TRPM_DONT_PANIC:
2285	case VERR_TRPM_PANIC:
2286	break;
2287
2288	/*
2289	* Anything which is not known to us means an internal error
2290	* and the termination of the VM!
2291	*/
2292	default:
2293	AssertMsgFailed(("Unknown GC return code: %Vra\n", rc));
2294	break;
2295	}
2296	return rc;
2297	}
2298
2299	/**
2300	* Check for pending raw actions
2301	*
2302	* @returns VBox status code.
2303	* @param pVM The VM to operate on.
2304	*/
2305	EMR3DECL(int) EMR3CheckRawForcedActions(PVM pVM)
2306	{
2307	return emR3RawForcedActions(pVM, pVM->em.s.pCtx);
2308	}
2309
2310
2311	/**
2312	* Process raw-mode specific forced actions.
2313	*
2314	* This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK is pending.
2315	*
2316	* @returns VBox status code.
2317	* Only the normal success/failure stuff, no VINF_EM_*.
2318	* @param pVM The VM handle.
2319	* @param pCtx The guest CPUM register context.
2320	*/
2321	static int emR3RawForcedActions(PVM pVM, PCPUMCTX pCtx)
2322	{
2323	/*
2324	* Note that the order is vitally important!
2325	* Also note that SELMR3UpdateFromCPUM may trigger VM_FF_SELM_SYNC_TSS.
2326	*/
2327
2328
2329	/*
2330	* Sync selector tables.
2331	*/
2332	if (VM_FF_ISPENDING(pVM, VM_FF_SELM_SYNC_GDT \| VM_FF_SELM_SYNC_LDT))
2333	{
2334	int rc = SELMR3UpdateFromCPUM(pVM);
2335	if (VBOX_FAILURE(rc))
2336	return rc;
2337	}
2338
2339	/*
2340	* Sync IDT.
2341	*/
2342	if (VM_FF_ISSET(pVM, VM_FF_TRPM_SYNC_IDT))
2343	{
2344	int rc = TRPMR3SyncIDT(pVM);
2345	if (VBOX_FAILURE(rc))
2346	return rc;
2347	}
2348
2349	/*
2350	* Sync TSS.
2351	*/
2352	if (VM_FF_ISSET(pVM, VM_FF_SELM_SYNC_TSS))
2353	{
2354	int rc = SELMR3SyncTSS(pVM);
2355	if (VBOX_FAILURE(rc))
2356	return rc;
2357	}
2358
2359	/*
2360	* Sync page directory.
2361	*/
2362	if (VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL))
2363	{
2364	int rc = PGMSyncCR3(pVM, pCtx->cr0, pCtx->cr3, pCtx->cr4, VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
2365	if (VBOX_FAILURE(rc))
2366	return rc;
2367
2368	Assert(!VM_FF_ISPENDING(pVM, VM_FF_SELM_SYNC_GDT \| VM_FF_SELM_SYNC_LDT));
2369
2370	/* Prefetch pages for EIP and ESP */
2371	/** @todo This is rather expensive. Should investigate if it really helps at all. */
2372	rc = PGMPrefetchPage(pVM, SELMToFlat(pVM, DIS_SELREG_CS, CPUMCTX2CORE(pCtx), pCtx->rip));
2373	if (rc == VINF_SUCCESS)
2374	rc = PGMPrefetchPage(pVM, SELMToFlat(pVM, DIS_SELREG_SS, CPUMCTX2CORE(pCtx), pCtx->rsp));
2375	if (rc != VINF_SUCCESS)
2376	{
2377	if (rc != VINF_PGM_SYNC_CR3)
2378	return rc;
2379	rc = PGMSyncCR3(pVM, pCtx->cr0, pCtx->cr3, pCtx->cr4, VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
2380	if (VBOX_FAILURE(rc))
2381	return rc;
2382	}
2383	/** @todo maybe prefetch the supervisor stack page as well */
2384	}
2385
2386	/*
2387	* Allocate handy pages (just in case the above actions have consumed some pages).
2388	*/
2389	if (VM_FF_ISSET(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
2390	{
2391	int rc = PGMR3PhysAllocateHandyPages(pVM);
2392	if (VBOX_FAILURE(rc))
2393	return rc;
2394	}
2395
2396	return VINF_SUCCESS;
2397	}
2398
2399
2400	/**
2401	* Executes raw code.
2402	*
2403	* This function contains the raw-mode version of the inner
2404	* execution loop (the outer loop being in EMR3ExecuteVM()).
2405	*
2406	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE,
2407	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
2408	*
2409	* @param pVM VM handle.
2410	* @param pfFFDone Where to store an indicator telling whether or not
2411	* FFs were done before returning.
2412	*/
2413	static int emR3RawExecute(PVM pVM, bool *pfFFDone)
2414	{
2415	STAM_PROFILE_ADV_START(&pVM->em.s.StatRAWTotal, a);
2416
2417	int rc = VERR_INTERNAL_ERROR;
2418	PCPUMCTX pCtx = pVM->em.s.pCtx;
2419	LogFlow(("emR3RawExecute: (cs:eip=%04x:%08x)\n", pCtx->cs, pCtx->eip));
2420	pVM->em.s.fForceRAW = false;
2421	*pfFFDone = false;
2422
2423
2424	/*
2425	*
2426	* Spin till we get a forced action or raw mode status code resulting in
2427	* in anything but VINF_SUCCESS or VINF_EM_RESCHEDULE_RAW.
2428	*
2429	*/
2430	for (;;)
2431	{
2432	STAM_PROFILE_ADV_START(&pVM->em.s.StatRAWEntry, b);
2433
2434	/*
2435	* Check various preconditions.
2436	*/
2437	#ifdef VBOX_STRICT
2438	Assert(REMR3QueryPendingInterrupt(pVM) == REM_NO_PENDING_IRQ);
2439	Assert(pCtx->eflags.Bits.u1VM \|\| (pCtx->ss & X86_SEL_RPL) == 3 \|\| (pCtx->ss & X86_SEL_RPL) == 0);
2440	AssertMsg( (pCtx->eflags.u32 & X86_EFL_IF)
2441	\|\| PATMShouldUseRawMode(pVM, (RTGCPTR)pCtx->eip),
2442	("Tried to execute code with IF at EIP=%08x!\n", pCtx->eip));
2443	if ( !VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL)
2444	&& PGMR3MapHasConflicts(pVM, pCtx->cr3, pVM->fRawR0Enabled))
2445	{
2446	AssertMsgFailed(("We should not get conflicts any longer!!!\n"));
2447	return VERR_INTERNAL_ERROR;
2448	}
2449	#endif /* VBOX_STRICT */
2450
2451	/*
2452	* Process high priority pre-execution raw-mode FFs.
2453	*/
2454	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK))
2455	{
2456	rc = emR3RawForcedActions(pVM, pCtx);
2457	if (VBOX_FAILURE(rc))
2458	break;
2459	}
2460
2461	/*
2462	* If we're going to execute ring-0 code, the guest state needs to
2463	* be modified a bit and some of the state components (IF, SS/CS RPL,
2464	* and perhaps EIP) needs to be stored with PATM.
2465	*/
2466	rc = CPUMRawEnter(pVM, NULL);
2467	if (rc != VINF_SUCCESS)
2468	{
2469	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWEntry, b);
2470	break;
2471	}
2472
2473	/*
2474	* Scan code before executing it. Don't bother with user mode or V86 code
2475	*/
2476	if ( (pCtx->ss & X86_SEL_RPL) <= 1
2477	&& !pCtx->eflags.Bits.u1VM
2478	&& !PATMIsPatchGCAddr(pVM, pCtx->eip))
2479	{
2480	STAM_PROFILE_ADV_SUSPEND(&pVM->em.s.StatRAWEntry, b);
2481	CSAMR3CheckCodeEx(pVM, CPUMCTX2CORE(pCtx), pCtx->eip);
2482	STAM_PROFILE_ADV_RESUME(&pVM->em.s.StatRAWEntry, b);
2483	}
2484
2485	#ifdef LOG_ENABLED
2486	/*
2487	* Log important stuff before entering GC.
2488	*/
2489	PPATMGCSTATE pGCState = PATMR3QueryGCStateHC(pVM);
2490	if (pCtx->eflags.Bits.u1VM)
2491	Log(("RV86: %04X:%08X IF=%d VMFlags=%x\n", pCtx->cs, pCtx->eip, pCtx->eflags.Bits.u1IF, pGCState->uVMFlags));
2492	else if ((pCtx->ss & X86_SEL_RPL) == 1)
2493	{
2494	bool fCSAMScanned = CSAMIsPageScanned(pVM, (RTGCPTR)pCtx->eip);
2495	Log(("RR0: %08X ESP=%08X IF=%d VMFlags=%x PIF=%d CPL=%d (Scanned=%d)\n", pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pGCState->uVMFlags, pGCState->fPIF, (pCtx->ss & X86_SEL_RPL), fCSAMScanned));
2496	}
2497	else if ((pCtx->ss & X86_SEL_RPL) == 3)
2498	Log(("RR3: %08X ESP=%08X IF=%d VMFlags=%x\n", pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pGCState->uVMFlags));
2499	#endif /* LOG_ENABLED */
2500
2501
2502
2503	/*
2504	* Execute the code.
2505	*/
2506	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWEntry, b);
2507	STAM_PROFILE_START(&pVM->em.s.StatRAWExec, c);
2508	VMMR3Unlock(pVM);
2509	rc = VMMR3RawRunGC(pVM);
2510	VMMR3Lock(pVM);
2511	STAM_PROFILE_STOP(&pVM->em.s.StatRAWExec, c);
2512	STAM_PROFILE_ADV_START(&pVM->em.s.StatRAWTail, d);
2513
2514	LogFlow(("RR0-E: %08X ESP=%08X IF=%d VMFlags=%x PIF=%d CPL=%d\n", pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pGCState->uVMFlags, pGCState->fPIF, (pCtx->ss & X86_SEL_RPL)));
2515	LogFlow(("VMMR3RawRunGC returned %Vrc\n", rc));
2516
2517	/*
2518	* Restore the real CPU state and deal with high priority post
2519	* execution FFs before doing anything else.
2520	*/
2521	rc = CPUMRawLeave(pVM, NULL, rc);
2522	VM_FF_CLEAR(pVM, VM_FF_RESUME_GUEST_MASK);
2523	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK))
2524	rc = emR3HighPriorityPostForcedActions(pVM, rc);
2525
2526	#ifdef VBOX_STRICT
2527	/*
2528	* Assert TSS consistency & rc vs patch code.
2529	*/
2530	if ( !VM_FF_ISPENDING(pVM, VM_FF_SELM_SYNC_TSS \| VM_FF_SELM_SYNC_GDT) /* GDT implies TSS at the moment. */
2531	&& EMIsRawRing0Enabled(pVM))
2532	SELMR3CheckTSS(pVM);
2533	switch (rc)
2534	{
2535	case VINF_SUCCESS:
2536	case VINF_EM_RAW_INTERRUPT:
2537	case VINF_PATM_PATCH_TRAP_PF:
2538	case VINF_PATM_PATCH_TRAP_GP:
2539	case VINF_PATM_PATCH_INT3:
2540	case VINF_PATM_CHECK_PATCH_PAGE:
2541	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
2542	case VINF_EM_RAW_GUEST_TRAP:
2543	case VINF_EM_RESCHEDULE_RAW:
2544	break;
2545
2546	default:
2547	if (PATMIsPatchGCAddr(pVM, pCtx->eip) && !(pCtx->eflags.u32 & X86_EFL_TF))
2548	LogIt(NULL, 0, LOG_GROUP_PATM, ("Patch code interrupted at %VRv for reason %Vrc\n", (RTRCPTR)CPUMGetGuestEIP(pVM), rc));
2549	break;
2550	}
2551	/*
2552	* Let's go paranoid!
2553	*/
2554	if ( !VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL)
2555	&& PGMR3MapHasConflicts(pVM, pCtx->cr3, pVM->fRawR0Enabled))
2556	{
2557	AssertMsgFailed(("We should not get conflicts any longer!!!\n"));
2558	return VERR_INTERNAL_ERROR;
2559	}
2560	#endif /* VBOX_STRICT */
2561
2562	/*
2563	* Process the returned status code.
2564	*/
2565	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
2566	{
2567	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWTail, d);
2568	break;
2569	}
2570	rc = emR3RawHandleRC(pVM, pCtx, rc);
2571	if (rc != VINF_SUCCESS)
2572	{
2573	rc = emR3RawUpdateForceFlag(pVM, pCtx, rc);
2574	if (rc != VINF_SUCCESS)
2575	{
2576	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWTail, d);
2577	break;
2578	}
2579	}
2580
2581	/*
2582	* Check and execute forced actions.
2583	*/
2584	#ifdef VBOX_HIGH_RES_TIMERS_HACK
2585	TMTimerPoll(pVM);
2586	#endif
2587	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWTail, d);
2588	if (VM_FF_ISPENDING(pVM, ~VM_FF_HIGH_PRIORITY_PRE_RAW_MASK))
2589	{
2590	Assert(pCtx->eflags.Bits.u1VM \|\| (pCtx->ss & X86_SEL_RPL) != 1);
2591
2592	STAM_PROFILE_ADV_SUSPEND(&pVM->em.s.StatRAWTotal, a);
2593	rc = emR3ForcedActions(pVM, rc);
2594	STAM_PROFILE_ADV_RESUME(&pVM->em.s.StatRAWTotal, a);
2595	if ( rc != VINF_SUCCESS
2596	&& rc != VINF_EM_RESCHEDULE_RAW)
2597	{
2598	rc = emR3RawUpdateForceFlag(pVM, pCtx, rc);
2599	if (rc != VINF_SUCCESS)
2600	{
2601	*pfFFDone = true;
2602	break;
2603	}
2604	}
2605	}
2606	}
2607
2608	/*
2609	* Return to outer loop.
2610	*/
2611	#if defined(LOG_ENABLED) && defined(DEBUG)
2612	RTLogFlush(NULL);
2613	#endif
2614	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatRAWTotal, a);
2615	return rc;
2616	}
2617
2618
2619	/**
2620	* Executes hardware accelerated raw code. (Intel VMX & AMD SVM)
2621	*
2622	* This function contains the raw-mode version of the inner
2623	* execution loop (the outer loop being in EMR3ExecuteVM()).
2624	*
2625	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE, VINF_EM_RESCHEDULE_RAW,
2626	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
2627	*
2628	* @param pVM VM handle.
2629	* @param pfFFDone Where to store an indicator telling whether or not
2630	* FFs were done before returning.
2631	*/
2632	static int emR3HwAccExecute(PVM pVM, bool *pfFFDone)
2633	{
2634	int rc = VERR_INTERNAL_ERROR;
2635	PCPUMCTX pCtx = pVM->em.s.pCtx;
2636
2637	LogFlow(("emR3HwAccExecute: (cs:eip=%04x:%VGv)\n", pCtx->cs, pCtx->rip));
2638	*pfFFDone = false;
2639
2640	STAM_COUNTER_INC(&pVM->em.s.StatHwAccExecuteEntry);
2641
2642	/*
2643	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
2644	*/
2645	for (;;)
2646	{
2647	STAM_PROFILE_ADV_START(&pVM->em.s.StatHwAccEntry, a);
2648
2649	/*
2650	* Check various preconditions.
2651	*/
2652	VM_FF_CLEAR(pVM, (VM_FF_SELM_SYNC_GDT \| VM_FF_SELM_SYNC_LDT \| VM_FF_TRPM_SYNC_IDT \| VM_FF_SELM_SYNC_TSS));
2653
2654	/*
2655	* Process high priority pre-execution raw-mode FFs.
2656	*/
2657	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK))
2658	{
2659	rc = emR3RawForcedActions(pVM, pCtx);
2660	if (VBOX_FAILURE(rc))
2661	break;
2662	}
2663
2664	#ifdef LOG_ENABLED
2665	uint8_t u8Vector;
2666
2667	rc = TRPMQueryTrapAll(pVM, &u8Vector, 0, 0, 0);
2668	if (rc == VINF_SUCCESS)
2669	{
2670	Log(("Pending hardware interrupt %d\n", u8Vector));
2671	}
2672	/*
2673	* Log important stuff before entering GC.
2674	*/
2675	uint32_t cpl = CPUMGetGuestCPL(pVM, CPUMCTX2CORE(pCtx));
2676
2677	if (pCtx->eflags.Bits.u1VM)
2678	Log(("HWV86: %08X IF=%d\n", pCtx->eip, pCtx->eflags.Bits.u1IF));
2679	else
2680	if (CPUMIsGuestIn64BitCode(pVM, CPUMCTX2CORE(pCtx)))
2681	Log(("HWR%d: %VGv ESP=%VGv IF=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
2682	else
2683	Log(("HWR%d: %08X ESP=%08X IF=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
2684	#endif
2685
2686	/*
2687	* Execute the code.
2688	*/
2689	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatHwAccEntry, a);
2690	STAM_PROFILE_START(&pVM->em.s.StatHwAccExec, x);
2691	VMMR3Unlock(pVM);
2692	rc = VMMR3HwAccRunGC(pVM);
2693	VMMR3Lock(pVM);
2694	STAM_PROFILE_STOP(&pVM->em.s.StatHwAccExec, x);
2695
2696	/*
2697	* Deal with high priority post execution FFs before doing anything else.
2698	*/
2699	VM_FF_CLEAR(pVM, VM_FF_RESUME_GUEST_MASK);
2700	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK))
2701	rc = emR3HighPriorityPostForcedActions(pVM, rc);
2702
2703	/*
2704	* Process the returned status code.
2705	*/
2706	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
2707	break;
2708
2709	rc = emR3RawHandleRC(pVM, pCtx, rc);
2710	if (rc != VINF_SUCCESS)
2711	break;
2712
2713	/*
2714	* Check and execute forced actions.
2715	*/
2716	#ifdef VBOX_HIGH_RES_TIMERS_HACK
2717	TMTimerPoll(pVM);
2718	#endif
2719	if (VM_FF_ISPENDING(pVM, VM_FF_ALL_MASK))
2720	{
2721	rc = emR3ForcedActions(pVM, rc);
2722	if ( rc != VINF_SUCCESS
2723	&& rc != VINF_EM_RESCHEDULE_HWACC)
2724	{
2725	*pfFFDone = true;
2726	break;
2727	}
2728	}
2729	}
2730	/*
2731	* Return to outer loop.
2732	*/
2733	#if defined(LOG_ENABLED) && defined(DEBUG)
2734	RTLogFlush(NULL);
2735	#endif
2736	return rc;
2737	}
2738
2739
2740	/**
2741	* Decides whether to execute RAW, HWACC or REM.
2742	*
2743	* @returns new EM state
2744	* @param pVM The VM.
2745	* @param pCtx The CPU context.
2746	*/
2747	inline EMSTATE emR3Reschedule(PVM pVM, PCPUMCTX pCtx)
2748	{
2749	/*
2750	* When forcing raw-mode execution, things are simple.
2751	*/
2752	if (pVM->em.s.fForceRAW)
2753	return EMSTATE_RAW;
2754
2755	/* !!! THIS MUST BE IN SYNC WITH remR3CanExecuteRaw !!! */
2756	/* !!! THIS MUST BE IN SYNC WITH remR3CanExecuteRaw !!! */
2757	/* !!! THIS MUST BE IN SYNC WITH remR3CanExecuteRaw !!! */
2758
2759	X86EFLAGS EFlags = pCtx->eflags;
2760	if (HWACCMIsEnabled(pVM))
2761	{
2762	/* Hardware accelerated raw-mode:
2763	*
2764	* Typically only 32-bits protected mode, with paging enabled, code is allowed here.
2765	*/
2766	if (HWACCMR3CanExecuteGuest(pVM, pCtx) == true)
2767	return EMSTATE_HWACC;
2768
2769	/** @note Raw mode and hw accelerated mode are incompatible. The latter turns off monitoring features essential for raw mode! */
2770	return EMSTATE_REM;
2771	}
2772
2773	/* Standard raw-mode:
2774	*
2775	* Here we only support 16 & 32 bits protected mode ring 3 code that has no IO privileges
2776	* or 32 bits protected mode ring 0 code
2777	*
2778	* The tests are ordered by the likelyhood of being true during normal execution.
2779	*/
2780	if (EFlags.u32 & (X86_EFL_TF /* \| HF_INHIBIT_IRQ_MASK*/))
2781	{
2782	Log2(("raw mode refused: EFlags=%#x\n", EFlags.u32));
2783	return EMSTATE_REM;
2784	}
2785
2786	#ifndef VBOX_RAW_V86
2787	if (EFlags.u32 & X86_EFL_VM) {
2788	Log2(("raw mode refused: VM_MASK\n"));
2789	return EMSTATE_REM;
2790	}
2791	#endif
2792
2793	/** @todo check up the X86_CR0_AM flag in respect to raw mode!!! We're probably not emulating it right! */
2794	uint32_t u32CR0 = pCtx->cr0;
2795	if ((u32CR0 & (X86_CR0_PG \| X86_CR0_PE)) != (X86_CR0_PG \| X86_CR0_PE))
2796	{
2797	//Log2(("raw mode refused: %s%s%s\n", (u32CR0 & X86_CR0_PG) ? "" : " !PG", (u32CR0 & X86_CR0_PE) ? "" : " !PE", (u32CR0 & X86_CR0_AM) ? "" : " !AM"));
2798	return EMSTATE_REM;
2799	}
2800
2801	if (pCtx->cr4 & X86_CR4_PAE)
2802	{
2803	uint32_t u32Dummy, u32Features;
2804
2805	CPUMGetGuestCpuId(pVM, 1, &u32Dummy, &u32Dummy, &u32Dummy, &u32Features);
2806	if (!(u32Features & X86_CPUID_FEATURE_EDX_PAE))
2807	return EMSTATE_REM;
2808	}
2809
2810	unsigned uSS = pCtx->ss;
2811	if ( pCtx->eflags.Bits.u1VM
2812	\|\| (uSS & X86_SEL_RPL) == 3)
2813	{
2814	if (!EMIsRawRing3Enabled(pVM))
2815	return EMSTATE_REM;
2816
2817	if (!(EFlags.u32 & X86_EFL_IF))
2818	{
2819	Log2(("raw mode refused: IF (RawR3)\n"));
2820	return EMSTATE_REM;
2821	}
2822
2823	if (!(u32CR0 & X86_CR0_WP) && EMIsRawRing0Enabled(pVM))
2824	{
2825	Log2(("raw mode refused: CR0.WP + RawR0\n"));
2826	return EMSTATE_REM;
2827	}
2828	}
2829	else
2830	{
2831	if (!EMIsRawRing0Enabled(pVM))
2832	return EMSTATE_REM;
2833
2834	/* Only ring 0 supervisor code. */
2835	if ((uSS & X86_SEL_RPL) != 0)
2836	{
2837	Log2(("raw r0 mode refused: CPL %d\n", uSS & X86_SEL_RPL));
2838	return EMSTATE_REM;
2839	}
2840
2841	// Let's start with pure 32 bits ring 0 code first
2842	/** @todo What's pure 32-bit mode? flat? */
2843	if ( !(pCtx->ssHid.Attr.n.u1DefBig)
2844	\|\| !(pCtx->csHid.Attr.n.u1DefBig))
2845	{
2846	Log2(("raw r0 mode refused: SS/CS not 32bit\n"));
2847	return EMSTATE_REM;
2848	}
2849
2850	/* Write protection muts be turned on, or else the guest can overwrite our hypervisor code and data. */
2851	if (!(u32CR0 & X86_CR0_WP))
2852	{
2853	Log2(("raw r0 mode refused: CR0.WP=0!\n"));
2854	return EMSTATE_REM;
2855	}
2856
2857	if (PATMShouldUseRawMode(pVM, (RTGCPTR)pCtx->eip))
2858	{
2859	Log2(("raw r0 mode forced: patch code\n"));
2860	return EMSTATE_RAW;
2861	}
2862
2863	#if !defined(VBOX_ALLOW_IF0) && !defined(VBOX_RUN_INTERRUPT_GATE_HANDLERS)
2864	if (!(EFlags.u32 & X86_EFL_IF))
2865	{
2866	////Log2(("R0: IF=0 VIF=%d %08X\n", eip, pVMeflags));
2867	//Log2(("RR0: Interrupts turned off; fall back to emulation\n"));
2868	return EMSTATE_REM;
2869	}
2870	#endif
2871
2872	/** @todo still necessary??? */
2873	if (EFlags.Bits.u2IOPL != 0)
2874	{
2875	Log2(("raw r0 mode refused: IOPL %d\n", EFlags.Bits.u2IOPL));
2876	return EMSTATE_REM;
2877	}
2878	}
2879
2880	Assert(PGMPhysIsA20Enabled(pVM));
2881	return EMSTATE_RAW;
2882	}
2883
2884
2885	/**
2886	* Executes all high priority post execution force actions.
2887	*
2888	* @returns rc or a fatal status code.
2889	*
2890	* @param pVM VM handle.
2891	* @param rc The current rc.
2892	*/
2893	static int emR3HighPriorityPostForcedActions(PVM pVM, int rc)
2894	{
2895	if (VM_FF_ISSET(pVM, VM_FF_PDM_CRITSECT))
2896	PDMR3CritSectFF(pVM);
2897
2898	if (VM_FF_ISSET(pVM, VM_FF_CSAM_PENDING_ACTION))
2899	CSAMR3DoPendingAction(pVM);
2900
2901	return rc;
2902	}
2903
2904
2905	/**
2906	* Executes all pending forced actions.
2907	*
2908	* Forced actions can cause execution delays and execution
2909	* rescheduling. The first we deal with using action priority, so
2910	* that for instance pending timers aren't scheduled and ran until
2911	* right before execution. The rescheduling we deal with using
2912	* return codes. The same goes for VM termination, only in that case
2913	* we exit everything.
2914	*
2915	* @returns VBox status code of equal or greater importance/severity than rc.
2916	* The most important ones are: VINF_EM_RESCHEDULE,
2917	* VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
2918	*
2919	* @param pVM VM handle.
2920	* @param rc The current rc.
2921	*
2922	*/
2923	static int emR3ForcedActions(PVM pVM, int rc)
2924	{
2925	#ifdef VBOX_STRICT
2926	int rcIrq = VINF_SUCCESS;
2927	#endif
2928	STAM_PROFILE_START(&pVM->em.s.StatForcedActions, a);
2929
2930	#define UPDATE_RC() \
2931	do { \
2932	AssertMsg(rc2 <= 0 \|\| (rc2 >= VINF_EM_FIRST && rc2 <= VINF_EM_LAST), ("Invalid FF return code: %Vra\n", rc2)); \
2933	if (rc2 == VINF_SUCCESS \|\| rc < VINF_SUCCESS) \
2934	break; \
2935	if (!rc \|\| rc2 < rc) \
2936	rc = rc2; \
2937	} while (0)
2938
2939	int rc2;
2940
2941	/*
2942	* Post execution chunk first.
2943	*/
2944	if (VM_FF_ISPENDING(pVM, VM_FF_NORMAL_PRIORITY_POST_MASK))
2945	{
2946	/*
2947	* Termination request.
2948	*/
2949	if (VM_FF_ISSET(pVM, VM_FF_TERMINATE))
2950	{
2951	Log2(("emR3ForcedActions: returns VINF_EM_TERMINATE\n"));
2952	STAM_PROFILE_STOP(&pVM->em.s.StatForcedActions, a);
2953	return VINF_EM_TERMINATE;
2954	}
2955
2956	/*
2957	* Debugger Facility polling.
2958	*/
2959	if (VM_FF_ISSET(pVM, VM_FF_DBGF))
2960	{
2961	rc2 = DBGFR3VMMForcedAction(pVM);
2962	UPDATE_RC();
2963	}
2964
2965	/*
2966	* Postponed reset request.
2967	*/
2968	if (VM_FF_ISSET(pVM, VM_FF_RESET))
2969	{
2970	rc2 = VMR3Reset(pVM);
2971	UPDATE_RC();
2972	VM_FF_CLEAR(pVM, VM_FF_RESET);
2973	}
2974
2975	/*
2976	* CSAM page scanning.
2977	*/
2978	if (VM_FF_ISSET(pVM, VM_FF_CSAM_SCAN_PAGE))
2979	{
2980	PCPUMCTX pCtx = pVM->em.s.pCtx;
2981
2982	/** @todo: check for 16 or 32 bits code! (D bit in the code selector) */
2983	Log(("Forced action VM_FF_CSAM_SCAN_PAGE\n"));
2984
2985	CSAMR3CheckCodeEx(pVM, CPUMCTX2CORE(pCtx), pCtx->eip);
2986	VM_FF_CLEAR(pVM, VM_FF_CSAM_SCAN_PAGE);
2987	}
2988
2989	/* check that we got them all */
2990	Assert(!(VM_FF_NORMAL_PRIORITY_POST_MASK & ~(VM_FF_TERMINATE \| VM_FF_DBGF \| VM_FF_RESET \| VM_FF_CSAM_SCAN_PAGE)));
2991	}
2992
2993	/*
2994	* Normal priority then.
2995	* (Executed in no particular order.)
2996	*/
2997	if (VM_FF_ISPENDING(pVM, VM_FF_NORMAL_PRIORITY_MASK))
2998	{
2999	/*
3000	* PDM Queues are pending.
3001	*/
3002	if (VM_FF_ISSET(pVM, VM_FF_PDM_QUEUES))
3003	PDMR3QueueFlushAll(pVM);
3004
3005	/*
3006	* PDM DMA transfers are pending.
3007	*/
3008	if (VM_FF_ISSET(pVM, VM_FF_PDM_DMA))
3009	PDMR3DmaRun(pVM);
3010
3011	/*
3012	* Requests from other threads.
3013	*/
3014	if (VM_FF_ISSET(pVM, VM_FF_REQUEST))
3015	{
3016	rc2 = VMR3ReqProcessU(pVM->pUVM);
3017	if (rc2 == VINF_EM_OFF \|\| rc2 == VINF_EM_TERMINATE)
3018	{
3019	Log2(("emR3ForcedActions: returns %Vrc\n", rc2));
3020	STAM_PROFILE_STOP(&pVM->em.s.StatForcedActions, a);
3021	return rc2;
3022	}
3023	UPDATE_RC();
3024	}
3025
3026	/* check that we got them all */
3027	Assert(!(VM_FF_NORMAL_PRIORITY_MASK & ~(VM_FF_REQUEST \| VM_FF_PDM_QUEUES \| VM_FF_PDM_DMA)));
3028	}
3029
3030	/*
3031	* Execute polling function ever so often.
3032	* THIS IS A HACK, IT WILL BE REPLACED BY PROPER ASYNC NETWORKING SOON!
3033	*/
3034	static unsigned cLast = 0;
3035	if (!((++cLast) % 4))
3036	PDMR3Poll(pVM);
3037
3038	/*
3039	* High priority pre execution chunk last.
3040	* (Executed in ascending priority order.)
3041	*/
3042	if (VM_FF_ISPENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_MASK))
3043	{
3044	/*
3045	* Timers before interrupts.
3046	*/
3047	if (VM_FF_ISSET(pVM, VM_FF_TIMER))
3048	TMR3TimerQueuesDo(pVM);
3049
3050	/*
3051	* The instruction following an emulated STI should always be executed!
3052	*/
3053	if (VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
3054	{
3055	Log(("VM_FF_EMULATED_STI at %VGv successor %VGv\n", (RTGCPTR)CPUMGetGuestRIP(pVM), EMGetInhibitInterruptsPC(pVM)));
3056	if (CPUMGetGuestEIP(pVM) != EMGetInhibitInterruptsPC(pVM))
3057	{
3058	/** @note we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here if the eip is the same as the inhibited instr address.
3059	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
3060	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
3061	* break the guest. Sounds very unlikely, but such timing sensitive problem are not as rare as you might think.
3062	*/
3063	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
3064	}
3065	if (HWACCMR3IsActive(pVM))
3066	rc2 = VINF_EM_RESCHEDULE_HWACC;
3067	else
3068	rc2 = PATMAreInterruptsEnabled(pVM) ? VINF_EM_RESCHEDULE_RAW : VINF_EM_RESCHEDULE_REM;
3069
3070	UPDATE_RC();
3071	}
3072
3073	/*
3074	* Interrupts.
3075	*/
3076	if ( !VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS)
3077	&& (!rc \|\| rc >= VINF_EM_RESCHEDULE_RAW)
3078	&& !TRPMHasTrap(pVM) /* an interrupt could already be scheduled for dispatching in the recompiler. */
3079	&& PATMAreInterruptsEnabled(pVM)
3080	&& !HWACCMR3IsEventPending(pVM))
3081	{
3082	if (VM_FF_ISPENDING(pVM, VM_FF_INTERRUPT_APIC \| VM_FF_INTERRUPT_PIC))
3083	{
3084	/** @note it's important to make sure the return code from TRPMR3InjectEvent isn't ignored! */
3085	/** @todo this really isn't nice, should properly handle this */
3086	rc2 = TRPMR3InjectEvent(pVM, TRPM_HARDWARE_INT);
3087	#ifdef VBOX_STRICT
3088	rcIrq = rc2;
3089	#endif
3090	UPDATE_RC();
3091	}
3092	/** @todo really ugly; if we entered the hlt state when exiting the recompiler and an interrupt was pending, we previously got stuck in the halted state. */
3093	else if (REMR3QueryPendingInterrupt(pVM) != REM_NO_PENDING_IRQ)
3094	{
3095	rc2 = VINF_EM_RESCHEDULE_REM;
3096	UPDATE_RC();
3097	}
3098	}
3099
3100	/*
3101	* Allocate handy pages.
3102	*/
3103	if (VM_FF_ISSET(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
3104	{
3105	rc2 = PGMR3PhysAllocateHandyPages(pVM);
3106	UPDATE_RC();
3107	}
3108
3109	/*
3110	* Debugger Facility request.
3111	*/
3112	if (VM_FF_ISSET(pVM, VM_FF_DBGF))
3113	{
3114	rc2 = DBGFR3VMMForcedAction(pVM);
3115	UPDATE_RC();
3116	}
3117
3118	/*
3119	* Termination request.
3120	*/
3121	if (VM_FF_ISSET(pVM, VM_FF_TERMINATE))
3122	{
3123	Log2(("emR3ForcedActions: returns VINF_EM_TERMINATE\n"));
3124	STAM_PROFILE_STOP(&pVM->em.s.StatForcedActions, a);
3125	return VINF_EM_TERMINATE;
3126	}
3127
3128	#ifdef DEBUG
3129	/*
3130	* Debug, pause the VM.
3131	*/
3132	if (VM_FF_ISSET(pVM, VM_FF_DEBUG_SUSPEND))
3133	{
3134	VM_FF_CLEAR(pVM, VM_FF_DEBUG_SUSPEND);
3135	Log(("emR3ForcedActions: returns VINF_EM_SUSPEND\n"));
3136	return VINF_EM_SUSPEND;
3137	}
3138
3139	#endif
3140	/* check that we got them all */
3141	Assert(!(VM_FF_HIGH_PRIORITY_PRE_MASK & ~(VM_FF_TIMER \| VM_FF_INTERRUPT_APIC \| VM_FF_INTERRUPT_PIC \| VM_FF_DBGF \| VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL \| VM_FF_SELM_SYNC_TSS \| VM_FF_TRPM_SYNC_IDT \| VM_FF_SELM_SYNC_GDT \| VM_FF_SELM_SYNC_LDT \| VM_FF_TERMINATE \| VM_FF_DEBUG_SUSPEND \| VM_FF_INHIBIT_INTERRUPTS \| VM_FF_PGM_NEED_HANDY_PAGES)));
3142	}
3143
3144	#undef UPDATE_RC
3145	Log2(("emR3ForcedActions: returns %Vrc\n", rc));
3146	STAM_PROFILE_STOP(&pVM->em.s.StatForcedActions, a);
3147	Assert(rcIrq == VINF_SUCCESS \|\| rcIrq == rc);
3148	return rc;
3149	}
3150
3151
3152	/**
3153	* Execute VM.
3154	*
3155	* This function is the main loop of the VM. The emulation thread
3156	* calls this function when the VM has been successfully constructed
3157	* and we're ready for executing the VM.
3158	*
3159	* Returning from this function means that the VM is turned off or
3160	* suspended (state already saved) and deconstruction in next in line.
3161	*
3162	* All interaction from other thread are done using forced actions
3163	* and signaling of the wait object.
3164	*
3165	* @returns VBox status code.
3166	* @param pVM The VM to operate on.
3167	*/
3168	EMR3DECL(int) EMR3ExecuteVM(PVM pVM)
3169	{
3170	LogFlow(("EMR3ExecuteVM: pVM=%p enmVMState=%d enmState=%d (%s) fForceRAW=%d\n", pVM, pVM->enmVMState,
3171	pVM->em.s.enmState, EMR3GetStateName(pVM->em.s.enmState), pVM->em.s.fForceRAW));
3172	VM_ASSERT_EMT(pVM);
3173	Assert(pVM->em.s.enmState == EMSTATE_NONE \|\| pVM->em.s.enmState == EMSTATE_SUSPENDED);
3174
3175	VMMR3Lock(pVM);
3176
3177	int rc = setjmp(pVM->em.s.u.FatalLongJump);
3178	if (rc == 0)
3179	{
3180	/*
3181	* Start the virtual time.
3182	*/
3183	rc = TMVirtualResume(pVM);
3184	Assert(rc == VINF_SUCCESS);
3185	rc = TMCpuTickResume(pVM);
3186	Assert(rc == VINF_SUCCESS);
3187
3188	/*
3189	* The Outer Main Loop.
3190	*/
3191	bool fFFDone = false;
3192	rc = VINF_EM_RESCHEDULE;
3193	pVM->em.s.enmState = EMSTATE_REM;
3194	STAM_REL_PROFILE_ADV_START(&pVM->em.s.StatTotal, x);
3195	for (;;)
3196	{
3197	/*
3198	* Before we can schedule anything (we're here because
3199	* scheduling is required) we must service any pending
3200	* forced actions to avoid any pending action causing
3201	* immidate rescheduling upon entering an inner loop
3202	*
3203	* Do forced actions.
3204	*/
3205	if ( !fFFDone
3206	&& rc != VINF_EM_TERMINATE
3207	&& rc != VINF_EM_OFF
3208	&& VM_FF_ISPENDING(pVM, VM_FF_ALL_BUT_RAW_MASK))
3209	{
3210	rc = emR3ForcedActions(pVM, rc);
3211	if ( ( rc == VINF_EM_RESCHEDULE_REM
3212	\|\| rc == VINF_EM_RESCHEDULE_HWACC)
3213	&& pVM->em.s.fForceRAW)
3214	rc = VINF_EM_RESCHEDULE_RAW;
3215	}
3216	else if (fFFDone)
3217	fFFDone = false;
3218
3219	/*
3220	* Now what to do?
3221	*/
3222	Log2(("EMR3ExecuteVM: rc=%Vrc\n", rc));
3223	switch (rc)
3224	{
3225	/*
3226	* Keep doing what we're currently doing.
3227	*/
3228	case VINF_SUCCESS:
3229	break;
3230
3231	/*
3232	* Reschedule - to raw-mode execution.
3233	*/
3234	case VINF_EM_RESCHEDULE_RAW:
3235	Log2(("EMR3ExecuteVM: VINF_EM_RESCHEDULE_RAW: %d -> %d (EMSTATE_RAW)\n", pVM->em.s.enmState, EMSTATE_RAW));
3236	pVM->em.s.enmState = EMSTATE_RAW;
3237	break;
3238
3239	/*
3240	* Reschedule - to hardware accelerated raw-mode execution.
3241	*/
3242	case VINF_EM_RESCHEDULE_HWACC:
3243	Log2(("EMR3ExecuteVM: VINF_EM_RESCHEDULE_HWACC: %d -> %d (EMSTATE_HWACC)\n", pVM->em.s.enmState, EMSTATE_HWACC));
3244	Assert(!pVM->em.s.fForceRAW);
3245	pVM->em.s.enmState = EMSTATE_HWACC;
3246	break;
3247
3248	/*
3249	* Reschedule - to recompiled execution.
3250	*/
3251	case VINF_EM_RESCHEDULE_REM:
3252	Log2(("EMR3ExecuteVM: VINF_EM_RESCHEDULE_REM: %d -> %d (EMSTATE_REM)\n", pVM->em.s.enmState, EMSTATE_REM));
3253	pVM->em.s.enmState = EMSTATE_REM;
3254	break;
3255
3256	/*
3257	* Resume.
3258	*/
3259	case VINF_EM_RESUME:
3260	Log2(("EMR3ExecuteVM: VINF_EM_RESUME: %d -> VINF_EM_RESCHEDULE\n", pVM->em.s.enmState));
3261	/* fall through and get scheduled. */
3262
3263	/*
3264	* Reschedule.
3265	*/
3266	case VINF_EM_RESCHEDULE:
3267	{
3268	EMSTATE enmState = emR3Reschedule(pVM, pVM->em.s.pCtx);
3269	Log2(("EMR3ExecuteVM: VINF_EM_RESCHEDULE: %d -> %d (%s)\n", pVM->em.s.enmState, enmState, EMR3GetStateName(enmState)));
3270	pVM->em.s.enmState = enmState;
3271	break;
3272	}
3273
3274	/*
3275	* Halted.
3276	*/
3277	case VINF_EM_HALT:
3278	Log2(("EMR3ExecuteVM: VINF_EM_HALT: %d -> %d\n", pVM->em.s.enmState, EMSTATE_HALTED));
3279	pVM->em.s.enmState = EMSTATE_HALTED;
3280	break;
3281
3282	/*
3283	* Suspend.
3284	*/
3285	case VINF_EM_SUSPEND:
3286	Log2(("EMR3ExecuteVM: VINF_EM_SUSPEND: %d -> %d\n", pVM->em.s.enmState, EMSTATE_SUSPENDED));
3287	pVM->em.s.enmState = EMSTATE_SUSPENDED;
3288	break;
3289
3290	/*
3291	* Reset.
3292	* We might end up doing a double reset for now, we'll have to clean up the mess later.
3293	*/
3294	case VINF_EM_RESET:
3295	Log2(("EMR3ExecuteVM: VINF_EM_RESET: %d -> %d\n", pVM->em.s.enmState, EMSTATE_REM));
3296	pVM->em.s.enmState = EMSTATE_REM;
3297	break;
3298
3299	/*
3300	* Power Off.
3301	*/
3302	case VINF_EM_OFF:
3303	pVM->em.s.enmState = EMSTATE_TERMINATING;
3304	Log2(("EMR3ExecuteVM: returns VINF_EM_OFF (%d -> %d)\n", pVM->em.s.enmState, EMSTATE_TERMINATING));
3305	TMVirtualPause(pVM);
3306	TMCpuTickPause(pVM);
3307	VMMR3Unlock(pVM);
3308	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3309	return rc;
3310
3311	/*
3312	* Terminate the VM.
3313	*/
3314	case VINF_EM_TERMINATE:
3315	pVM->em.s.enmState = EMSTATE_TERMINATING;
3316	Log(("EMR3ExecuteVM returns VINF_EM_TERMINATE (%d -> %d)\n", pVM->em.s.enmState, EMSTATE_TERMINATING));
3317	TMVirtualPause(pVM);
3318	TMCpuTickPause(pVM);
3319	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3320	return rc;
3321
3322	/*
3323	* Guest debug events.
3324	*/
3325	case VINF_EM_DBG_STEPPED:
3326	AssertMsgFailed(("VINF_EM_DBG_STEPPED cannot be here!"));
3327	case VINF_EM_DBG_STOP:
3328	case VINF_EM_DBG_BREAKPOINT:
3329	case VINF_EM_DBG_STEP:
3330	if (pVM->em.s.enmState == EMSTATE_RAW)
3331	{
3332	Log2(("EMR3ExecuteVM: %Vrc: %d -> %d\n", rc, pVM->em.s.enmState, EMSTATE_DEBUG_GUEST_RAW));
3333	pVM->em.s.enmState = EMSTATE_DEBUG_GUEST_RAW;
3334	}
3335	else
3336	{
3337	Log2(("EMR3ExecuteVM: %Vrc: %d -> %d\n", rc, pVM->em.s.enmState, EMSTATE_DEBUG_GUEST_REM));
3338	pVM->em.s.enmState = EMSTATE_DEBUG_GUEST_REM;
3339	}
3340	break;
3341
3342	/*
3343	* Hypervisor debug events.
3344	*/
3345	case VINF_EM_DBG_HYPER_STEPPED:
3346	case VINF_EM_DBG_HYPER_BREAKPOINT:
3347	case VINF_EM_DBG_HYPER_ASSERTION:
3348	Log2(("EMR3ExecuteVM: %Vrc: %d -> %d\n", rc, pVM->em.s.enmState, EMSTATE_DEBUG_HYPER));
3349	pVM->em.s.enmState = EMSTATE_DEBUG_HYPER;
3350	break;
3351
3352	/*
3353	* Any error code showing up here other than the ones we
3354	* know and process above are considered to be FATAL.
3355	*
3356	* Unknown warnings and informational status codes are also
3357	* included in this.
3358	*/
3359	default:
3360	if (VBOX_SUCCESS(rc))
3361	{
3362	AssertMsgFailed(("Unexpected warning or informational status code %Vra!\n", rc));
3363	rc = VERR_EM_INTERNAL_ERROR;
3364	}
3365	pVM->em.s.enmState = EMSTATE_GURU_MEDITATION;
3366	Log(("EMR3ExecuteVM returns %d\n", rc));
3367	break;
3368	}
3369
3370
3371	/*
3372	* Any waiters can now be woken up
3373	*/
3374	VMMR3Unlock(pVM);
3375	VMMR3Lock(pVM);
3376
3377	STAM_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x); /* (skip this in release) */
3378	STAM_PROFILE_ADV_START(&pVM->em.s.StatTotal, x);
3379
3380	/*
3381	* Act on the state.
3382	*/
3383	switch (pVM->em.s.enmState)
3384	{
3385	/*
3386	* Execute raw.
3387	*/
3388	case EMSTATE_RAW:
3389	rc = emR3RawExecute(pVM, &fFFDone);
3390	break;
3391
3392	/*
3393	* Execute hardware accelerated raw.
3394	*/
3395	case EMSTATE_HWACC:
3396	rc = emR3HwAccExecute(pVM, &fFFDone);
3397	break;
3398
3399	/*
3400	* Execute recompiled.
3401	*/
3402	case EMSTATE_REM:
3403	rc = emR3RemExecute(pVM, &fFFDone);
3404	Log2(("EMR3ExecuteVM: emR3RemExecute -> %Vrc\n", rc));
3405	break;
3406
3407	/*
3408	* hlt - execution halted until interrupt.
3409	*/
3410	case EMSTATE_HALTED:
3411	{
3412	STAM_REL_PROFILE_START(&pVM->em.s.StatHalted, y);
3413	rc = VMR3WaitHalted(pVM, !(CPUMGetGuestEFlags(pVM) & X86_EFL_IF));
3414	STAM_REL_PROFILE_STOP(&pVM->em.s.StatHalted, y);
3415	break;
3416	}
3417
3418	/*
3419	* Suspended - return to VM.cpp.
3420	*/
3421	case EMSTATE_SUSPENDED:
3422	TMVirtualPause(pVM);
3423	TMCpuTickPause(pVM);
3424	VMMR3Unlock(pVM);
3425	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3426	return VINF_EM_SUSPEND;
3427
3428	/*
3429	* Debugging in the guest.
3430	*/
3431	case EMSTATE_DEBUG_GUEST_REM:
3432	case EMSTATE_DEBUG_GUEST_RAW:
3433	TMVirtualPause(pVM);
3434	TMCpuTickPause(pVM);
3435	rc = emR3Debug(pVM, rc);
3436	TMVirtualResume(pVM);
3437	TMCpuTickResume(pVM);
3438	Log2(("EMR3ExecuteVM: enmr3Debug -> %Vrc (state %d)\n", rc, pVM->em.s.enmState));
3439	break;
3440
3441	/*
3442	* Debugging in the hypervisor.
3443	*/
3444	case EMSTATE_DEBUG_HYPER:
3445	{
3446	TMVirtualPause(pVM);
3447	TMCpuTickPause(pVM);
3448	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3449
3450	rc = emR3Debug(pVM, rc);
3451	Log2(("EMR3ExecuteVM: enmr3Debug -> %Vrc (state %d)\n", rc, pVM->em.s.enmState));
3452	if (rc != VINF_SUCCESS)
3453	{
3454	/* switch to guru meditation mode */
3455	pVM->em.s.enmState = EMSTATE_GURU_MEDITATION;
3456	VMMR3FatalDump(pVM, rc);
3457	return rc;
3458	}
3459
3460	STAM_REL_PROFILE_ADV_START(&pVM->em.s.StatTotal, x);
3461	TMVirtualResume(pVM);
3462	TMCpuTickResume(pVM);
3463	break;
3464	}
3465
3466	/*
3467	* Guru meditation takes place in the debugger.
3468	*/
3469	case EMSTATE_GURU_MEDITATION:
3470	{
3471	TMVirtualPause(pVM);
3472	TMCpuTickPause(pVM);
3473	VMMR3FatalDump(pVM, rc);
3474	emR3Debug(pVM, rc);
3475	VMMR3Unlock(pVM);
3476	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3477	return rc;
3478	}
3479
3480	/*
3481	* The states we don't expect here.
3482	*/
3483	case EMSTATE_NONE:
3484	case EMSTATE_TERMINATING:
3485	default:
3486	AssertMsgFailed(("EMR3ExecuteVM: Invalid state %d!\n", pVM->em.s.enmState));
3487	pVM->em.s.enmState = EMSTATE_GURU_MEDITATION;
3488	TMVirtualPause(pVM);
3489	TMCpuTickPause(pVM);
3490	VMMR3Unlock(pVM);
3491	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3492	return VERR_EM_INTERNAL_ERROR;
3493	}
3494	} /* The Outer Main Loop */
3495	}
3496	else
3497	{
3498	/*
3499	* Fatal error.
3500	*/
3501	LogFlow(("EMR3ExecuteVM: returns %Vrc (longjmp / fatal error)\n", rc));
3502	TMVirtualPause(pVM);
3503	TMCpuTickPause(pVM);
3504	VMMR3FatalDump(pVM, rc);
3505	emR3Debug(pVM, rc);
3506	VMMR3Unlock(pVM);
3507	STAM_REL_PROFILE_ADV_STOP(&pVM->em.s.StatTotal, x);
3508	/** @todo change the VM state! */
3509	return rc;
3510	}
3511
3512	/* (won't ever get here). */
3513	AssertFailed();
3514	}
3515

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source: vbox/trunk/src/VBox/VMM/EM.cpp@ 10321

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