EMHM.cpp@ 47548

最後變更在這個檔案從47548是 47548,由 vboxsync 提交於 12 年前
IEM: Bunch of fixes, mostly DOS related.
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1	/* $Id: EMHM.cpp 47548 2013-08-06 03:58:21Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor / Manager - hardware virtualization
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.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
18	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_EM
22	#include <VBox/vmm/em.h>
23	#include <VBox/vmm/vmm.h>
24	#include <VBox/vmm/csam.h>
25	#include <VBox/vmm/selm.h>
26	#include <VBox/vmm/trpm.h>
27	#include <VBox/vmm/iem.h>
28	#include <VBox/vmm/iom.h>
29	#include <VBox/vmm/dbgf.h>
30	#include <VBox/vmm/pgm.h>
31	#ifdef VBOX_WITH_REM
32	# include <VBox/vmm/rem.h>
33	#endif
34	#include <VBox/vmm/tm.h>
35	#include <VBox/vmm/mm.h>
36	#include <VBox/vmm/ssm.h>
37	#include <VBox/vmm/pdmapi.h>
38	#include <VBox/vmm/pdmcritsect.h>
39	#include <VBox/vmm/pdmqueue.h>
40	#include <VBox/vmm/hm.h>
41	#include "EMInternal.h"
42	#include <VBox/vmm/vm.h>
43	#include <VBox/vmm/cpumdis.h>
44	#include <VBox/dis.h>
45	#include <VBox/disopcode.h>
46	#include <VBox/vmm/dbgf.h>
47	#include "VMMTracing.h"
48
49	#include <iprt/asm.h>
50
51
52	/*******************************************************************************
53	* Defined Constants And Macros *
54	*******************************************************************************/
55	#if 0 /* Disabled till after 2.1.0 when we've time to test it. */
56	#define EM_NOTIFY_HM
57	#endif
58
59
60	/*******************************************************************************
61	* Internal Functions *
62	*******************************************************************************/
63	DECLINLINE(int) emR3ExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
64	static int emR3ExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
65	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
66
67	#define EMHANDLERC_WITH_HM
68	#include "EMHandleRCTmpl.h"
69
70
71	#if defined(DEBUG) && defined(SOME_UNUSED_FUNCTIONS)
72
73	/**
74	* Steps hardware accelerated mode.
75	*
76	* @returns VBox status code.
77	* @param pVM Pointer to the VM.
78	* @param pVCpu Pointer to the VMCPU.
79	*/
80	static int emR3HmStep(PVM pVM, PVMCPU pVCpu)
81	{
82	Assert(pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM);
83
84	int rc;
85	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
86	# ifdef VBOX_WITH_RAW_MODE
87	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT \| VMCPU_FF_TRPM_SYNC_IDT \| VMCPU_FF_SELM_SYNC_TSS));
88	# endif
89
90	/*
91	* Check vital forced actions, but ignore pending interrupts and timers.
92	*/
93	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
94	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
95	{
96	rc = emR3HmForcedActions(pVM, pVCpu, pCtx);
97	if (rc != VINF_SUCCESS)
98	return rc;
99	}
100	/*
101	* Set flags for single stepping.
102	*/
103	CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) \| X86_EFL_TF \| X86_EFL_RF);
104
105	/*
106	* Single step.
107	* We do not start time or anything, if anything we should just do a few nanoseconds.
108	*/
109	do
110	{
111	rc = VMMR3HmRunGC(pVM, pVCpu);
112	} while ( rc == VINF_SUCCESS
113	\|\| rc == VINF_EM_RAW_INTERRUPT);
114	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
115
116	/*
117	* Make sure the trap flag is cleared.
118	* (Too bad if the guest is trying to single step too.)
119	*/
120	CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) & ~X86_EFL_TF);
121
122	/*
123	* Deal with the return codes.
124	*/
125	rc = emR3HighPriorityPostForcedActions(pVM, pVCpu, rc);
126	rc = emR3HmHandleRC(pVM, pVCpu, pCtx, rc);
127	return rc;
128	}
129
130
131	static int emR3SingleStepExecHm(PVM pVM, PVMCPU pVCpu, uint32_t cIterations)
132	{
133	int rc = VINF_SUCCESS;
134	EMSTATE enmOldState = pVCpu->em.s.enmState;
135	pVCpu->em.s.enmState = EMSTATE_DEBUG_GUEST_HM;
136
137	Log(("Single step BEGIN:\n"));
138	for (uint32_t i = 0; i < cIterations; i++)
139	{
140	DBGFR3PrgStep(pVCpu);
141	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "RSS");
142	rc = emR3HmStep(pVM, pVCpu);
143	if ( rc != VINF_SUCCESS
144	\|\| !HMR3CanExecuteGuest(pVM, pVCpu->em.s.pCtx))
145	break;
146	}
147	Log(("Single step END: rc=%Rrc\n", rc));
148	CPUMSetGuestEFlags(pVCpu, CPUMGetGuestEFlags(pVCpu) & ~X86_EFL_TF);
149	pVCpu->em.s.enmState = enmOldState;
150	return rc == VINF_SUCCESS ? VINF_EM_RESCHEDULE_REM : rc;
151	}
152
153	#endif /* DEBUG */
154
155
156	/**
157	* Executes one (or perhaps a few more) instruction(s).
158	*
159	* @returns VBox status code suitable for EM.
160	*
161	* @param pVM Pointer to the VM.
162	* @param pVCpu Pointer to the VMCPU.
163	* @param rcRC Return code from RC.
164	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
165	* instruction and prefix the log output with this text.
166	*/
167	#ifdef LOG_ENABLED
168	static int emR3ExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
169	#else
170	static int emR3ExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
171	#endif
172	{
173	#ifdef LOG_ENABLED
174	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
175	#endif
176	int rc;
177	NOREF(rcRC);
178
179	/*
180	*
181	* The simple solution is to use the recompiler.
182	* The better solution is to disassemble the current instruction and
183	* try handle as many as possible without using REM.
184	*
185	*/
186
187	#ifdef LOG_ENABLED
188	/*
189	* Disassemble the instruction if requested.
190	*/
191	if (pszPrefix)
192	{
193	DBGFR3_INFO_LOG(pVM, "cpumguest", pszPrefix);
194	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
195	}
196	#endif /* LOG_ENABLED */
197
198	#if 0
199	/* Try our own instruction emulator before falling back to the recompiler. */
200	DISCPUSTATE Cpu;
201	rc = CPUMR3DisasmInstrCPU(pVM, pVCpu, pCtx, pCtx->rip, &Cpu, "GEN EMU");
202	if (RT_SUCCESS(rc))
203	{
204	switch (Cpu.pCurInstr->uOpcode)
205	{
206	/* @todo we can do more now */
207	case OP_MOV:
208	case OP_AND:
209	case OP_OR:
210	case OP_XOR:
211	case OP_POP:
212	case OP_INC:
213	case OP_DEC:
214	case OP_XCHG:
215	STAM_PROFILE_START(&pVCpu->em.s.StatMiscEmu, a);
216	rc = EMInterpretInstructionCpuUpdtPC(pVM, pVCpu, &Cpu, CPUMCTX2CORE(pCtx), 0);
217	if (RT_SUCCESS(rc))
218	{
219	#ifdef EM_NOTIFY_HM
220	if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
221	HMR3NotifyEmulated(pVCpu);
222	#endif
223	STAM_PROFILE_STOP(&pVCpu->em.s.StatMiscEmu, a);
224	return rc;
225	}
226	if (rc != VERR_EM_INTERPRETER)
227	AssertMsgFailedReturn(("rc=%Rrc\n", rc), rc);
228	STAM_PROFILE_STOP(&pVCpu->em.s.StatMiscEmu, a);
229	break;
230	}
231	}
232	#endif /* 0 */
233	STAM_PROFILE_START(&pVCpu->em.s.StatREMEmu, a);
234	Log(("EMINS: %04x:%RGv RSP=%RGv\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip, (RTGCPTR)pCtx->rsp));
235	#ifdef VBOX_WITH_REM
236	EMRemLock(pVM);
237	/* Flush the recompiler TLB if the VCPU has changed. */
238	if (pVM->em.s.idLastRemCpu != pVCpu->idCpu)
239	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL);
240	pVM->em.s.idLastRemCpu = pVCpu->idCpu;
241
242	rc = REMR3EmulateInstruction(pVM, pVCpu);
243	EMRemUnlock(pVM);
244	#else
245	rc = VBOXSTRICTRC_TODO(IEMExecOne(pVCpu)); NOREF(pVM);
246	#endif
247	STAM_PROFILE_STOP(&pVCpu->em.s.StatREMEmu, a);
248
249	#ifdef EM_NOTIFY_HM
250	if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
251	HMR3NotifyEmulated(pVCpu);
252	#endif
253	return rc;
254	}
255
256
257	/**
258	* Executes one (or perhaps a few more) instruction(s).
259	* This is just a wrapper for discarding pszPrefix in non-logging builds.
260	*
261	* @returns VBox status code suitable for EM.
262	* @param pVM Pointer to the VM.
263	* @param pVCpu Pointer to the VMCPU.
264	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
265	* instruction and prefix the log output with this text.
266	* @param rcGC GC return code
267	*/
268	DECLINLINE(int) emR3ExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
269	{
270	#ifdef LOG_ENABLED
271	return emR3ExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
272	#else
273	return emR3ExecuteInstructionWorker(pVM, pVCpu, rcGC);
274	#endif
275	}
276
277	/**
278	* Executes one (or perhaps a few more) IO instruction(s).
279	*
280	* @returns VBox status code suitable for EM.
281	* @param pVM Pointer to the VM.
282	* @param pVCpu Pointer to the VMCPU.
283	*/
284	static int emR3ExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
285	{
286	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
287
288	STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
289
290	/* Try to restart the io instruction that was refused in ring-0. */
291	VBOXSTRICTRC rcStrict = HMR3RestartPendingIOInstr(pVM, pVCpu, pCtx);
292	if (IOM_SUCCESS(rcStrict))
293	{
294	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoRestarted);
295	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
296	return VBOXSTRICTRC_TODO(rcStrict); /* rip already updated. */
297	}
298	AssertMsgReturn(rcStrict == VERR_NOT_FOUND, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
299	RT_SUCCESS_NP(rcStrict) ? VERR_IPE_UNEXPECTED_INFO_STATUS : VBOXSTRICTRC_TODO(rcStrict));
300
301	#ifdef VBOX_WITH_FIRST_IEM_STEP
302	/* Hand it over to the interpreter. */
303	rcStrict = IEMExecOne(pVCpu);
304	LogFlow(("emR3ExecuteIOInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
305	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoIem);
306	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
307	return VBOXSTRICTRC_TODO(rcStrict);
308
309	#else
310	/** @todo probably we should fall back to the recompiler; otherwise we'll go back and forth between HC & GC
311	* as io instructions tend to come in packages of more than one
312	*/
313	DISCPUSTATE Cpu;
314	int rc2 = CPUMR3DisasmInstrCPU(pVM, pVCpu, pCtx, pCtx->rip, &Cpu, "IO EMU");
315	if (RT_SUCCESS(rc2))
316	{
317	rcStrict = VINF_EM_RAW_EMULATE_INSTR;
318
319	if (!(Cpu.fPrefix & (DISPREFIX_REP \| DISPREFIX_REPNE)))
320	{
321	switch (Cpu.pCurInstr->uOpcode)
322	{
323	case OP_IN:
324	{
325	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIn);
326	rcStrict = IOMInterpretIN(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
327	break;
328	}
329
330	case OP_OUT:
331	{
332	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatOut);
333	rcStrict = IOMInterpretOUT(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
334	break;
335	}
336	}
337	}
338	else if (Cpu.fPrefix & DISPREFIX_REP)
339	{
340	switch (Cpu.pCurInstr->uOpcode)
341	{
342	case OP_INSB:
343	case OP_INSWD:
344	{
345	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIn);
346	rcStrict = IOMInterpretINS(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
347	break;
348	}
349
350	case OP_OUTSB:
351	case OP_OUTSWD:
352	{
353	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatOut);
354	rcStrict = IOMInterpretOUTS(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu);
355	break;
356	}
357	}
358	}
359
360	/*
361	* Handled the I/O return codes.
362	* (The unhandled cases end up with rcStrict == VINF_EM_RAW_EMULATE_INSTR.)
363	*/
364	if (IOM_SUCCESS(rcStrict))
365	{
366	pCtx->rip += Cpu.cbInstr;
367	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
368	LogFlow(("emR3ExecuteIOInstruction: %Rrc 1\n", VBOXSTRICTRC_VAL(rcStrict)));
369	return VBOXSTRICTRC_TODO(rcStrict);
370	}
371
372	if (rcStrict == VINF_EM_RAW_GUEST_TRAP)
373	{
374	/* The active trap will be dispatched. */
375	Assert(TRPMHasTrap(pVCpu));
376	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
377	LogFlow(("emR3ExecuteIOInstruction: VINF_SUCCESS 2\n"));
378	return VINF_SUCCESS;
379	}
380	AssertMsg(rcStrict != VINF_TRPM_XCPT_DISPATCHED, ("Handle VINF_TRPM_XCPT_DISPATCHED\n"));
381
382	if (RT_FAILURE(rcStrict))
383	{
384	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
385	LogFlow(("emR3ExecuteIOInstruction: %Rrc 3\n", VBOXSTRICTRC_VAL(rcStrict)));
386	return VBOXSTRICTRC_TODO(rcStrict);
387	}
388	AssertMsg(rcStrict == VINF_EM_RAW_EMULATE_INSTR \|\| rcStrict == VINF_EM_RESCHEDULE_REM, ("rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
389	}
390
391	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
392	int rc3 = emR3ExecuteInstruction(pVM, pVCpu, "IO: ");
393	LogFlow(("emR3ExecuteIOInstruction: %Rrc 4 (rc2=%Rrc, rc3=%Rrc)\n", VBOXSTRICTRC_VAL(rcStrict), rc2, rc3));
394	return rc3;
395	#endif
396	}
397
398
399	/**
400	* Process raw-mode specific forced actions.
401	*
402	* This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK is pending.
403	*
404	* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
405	* EM statuses.
406	* @param pVM Pointer to the VM.
407	* @param pVCpu Pointer to the VMCPU.
408	* @param pCtx Pointer to the guest CPU context.
409	*/
410	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
411	{
412	/*
413	* Sync page directory.
414	*/
415	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
416	{
417	Assert(pVCpu->em.s.enmState != EMSTATE_WAIT_SIPI);
418	int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
419	if (RT_FAILURE(rc))
420	return rc;
421
422	#ifdef VBOX_WITH_RAW_MODE
423	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
424	#endif
425
426	/* Prefetch pages for EIP and ESP. */
427	/** @todo This is rather expensive. Should investigate if it really helps at all. */
428	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_CS, CPUMCTX2CORE(pCtx), pCtx->rip));
429	if (rc == VINF_SUCCESS)
430	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_SS, CPUMCTX2CORE(pCtx), pCtx->rsp));
431	if (rc != VINF_SUCCESS)
432	{
433	if (rc != VINF_PGM_SYNC_CR3)
434	{
435	AssertLogRelMsgReturn(RT_FAILURE(rc), ("%Rrc\n", rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
436	return rc;
437	}
438	rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
439	if (RT_FAILURE(rc))
440	return rc;
441	}
442	/** @todo maybe prefetch the supervisor stack page as well */
443	#ifdef VBOX_WITH_RAW_MODE
444	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
445	#endif
446	}
447
448	/*
449	* Allocate handy pages (just in case the above actions have consumed some pages).
450	*/
451	if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
452	{
453	int rc = PGMR3PhysAllocateHandyPages(pVM);
454	if (RT_FAILURE(rc))
455	return rc;
456	}
457
458	/*
459	* Check whether we're out of memory now.
460	*
461	* This may stem from some of the above actions or operations that has been executed
462	* since we ran FFs. The allocate handy pages must for instance always be followed by
463	* this check.
464	*/
465	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY))
466	return VINF_EM_NO_MEMORY;
467
468	return VINF_SUCCESS;
469	}
470
471
472	/**
473	* Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
474	*
475	* This function contains the raw-mode version of the inner
476	* execution loop (the outer loop being in EMR3ExecuteVM()).
477	*
478	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE, VINF_EM_RESCHEDULE_RAW,
479	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
480	*
481	* @param pVM Pointer to the VM.
482	* @param pVCpu Pointer to the VMCPU.
483	* @param pfFFDone Where to store an indicator telling whether or not
484	* FFs were done before returning.
485	*/
486	int emR3HmExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
487	{
488	int rc = VERR_IPE_UNINITIALIZED_STATUS;
489	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
490
491	LogFlow(("emR3HmExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
492	*pfFFDone = false;
493
494	STAM_COUNTER_INC(&pVCpu->em.s.StatHmExecuteEntry);
495
496	#ifdef EM_NOTIFY_HM
497	HMR3NotifyScheduled(pVCpu);
498	#endif
499
500	/*
501	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
502	*/
503	for (;;)
504	{
505	STAM_PROFILE_ADV_START(&pVCpu->em.s.StatHmEntry, a);
506
507	/* Check if a forced reschedule is pending. */
508	if (HMR3IsRescheduleRequired(pVM, pCtx))
509	{
510	rc = VINF_EM_RESCHEDULE;
511	break;
512	}
513
514	/*
515	* Process high priority pre-execution raw-mode FFs.
516	*/
517	#ifdef VBOX_WITH_RAW_MODE
518	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
519	#endif
520	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
521	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
522	{
523	rc = emR3HmForcedActions(pVM, pVCpu, pCtx);
524	if (rc != VINF_SUCCESS)
525	break;
526	}
527
528	#ifdef LOG_ENABLED
529	/*
530	* Log important stuff before entering GC.
531	*/
532	if (TRPMHasTrap(pVCpu))
533	Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
534
535	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
536
537	if (pVM->cCpus == 1)
538	{
539	if (pCtx->eflags.Bits.u1VM)
540	Log(("HWV86: %08X IF=%d\n", pCtx->eip, pCtx->eflags.Bits.u1IF));
541	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
542	Log(("HWR%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
543	else
544	Log(("HWR%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
545	}
546	else
547	{
548	if (pCtx->eflags.Bits.u1VM)
549	Log(("HWV86-CPU%d: %08X IF=%d\n", pVCpu->idCpu, pCtx->eip, pCtx->eflags.Bits.u1IF));
550	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
551	Log(("HWR%d-CPU%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
552	else
553	Log(("HWR%d-CPU%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
554	}
555	#endif /* LOG_ENABLED */
556
557	/*
558	* Execute the code.
559	*/
560	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatHmEntry, a);
561
562	if (RT_LIKELY(emR3IsExecutionAllowed(pVM, pVCpu)))
563	{
564	STAM_PROFILE_START(&pVCpu->em.s.StatHmExec, x);
565	rc = VMMR3HmRunGC(pVM, pVCpu);
566	STAM_PROFILE_STOP(&pVCpu->em.s.StatHmExec, x);
567	}
568	else
569	{
570	/* Give up this time slice; virtual time continues */
571	STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
572	RTThreadSleep(5);
573	STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
574	rc = VINF_SUCCESS;
575	}
576
577
578	/*
579	* Deal with high priority post execution FFs before doing anything else.
580	*/
581	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
582	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
583	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
584	rc = emR3HighPriorityPostForcedActions(pVM, pVCpu, rc);
585
586	/*
587	* Process the returned status code.
588	*/
589	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
590	break;
591
592	rc = emR3HmHandleRC(pVM, pVCpu, pCtx, rc);
593	if (rc != VINF_SUCCESS)
594	break;
595
596	/*
597	* Check and execute forced actions.
598	*/
599	#ifdef VBOX_HIGH_RES_TIMERS_HACK
600	TMTimerPollVoid(pVM, pVCpu);
601	#endif
602	if ( VM_FF_IS_PENDING(pVM, VM_FF_ALL_MASK)
603	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_ALL_MASK))
604	{
605	rc = emR3ForcedActions(pVM, pVCpu, rc);
606	VBOXVMM_EM_FF_ALL_RET(pVCpu, rc);
607	if ( rc != VINF_SUCCESS
608	&& rc != VINF_EM_RESCHEDULE_HM)
609	{
610	*pfFFDone = true;
611	break;
612	}
613	}
614	}
615
616	/*
617	* Return to outer loop.
618	*/
619	#if defined(LOG_ENABLED) && defined(DEBUG)
620	RTLogFlush(NULL);
621	#endif
622	return rc;
623	}
624

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source: vbox/trunk/src/VBox/VMM/VMMR3/EMHM.cpp@ 47548

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