EMR3Nem.cpp

Last change on this file was 109189, checked in by vboxsync, 5 hours ago
VMM: Removed CPUMR3DisasmInstrCPU as nobody uses it (replaced by DBGFR3DisasInstrCurrent and friends by now).
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 20.5 KB

Line
1	/* $Id: EMR3Nem.cpp 109189 2025-05-07 11:24:03Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor / Manager - NEM interface.
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_EM
33	#define VMCPU_INCL_CPUM_GST_CTX
34	#include <VBox/vmm/em.h>
35	#include <VBox/vmm/vmm.h>
36	#include <VBox/vmm/selm.h>
37	#include <VBox/vmm/trpm.h>
38	#include <VBox/vmm/iem.h>
39	#include <VBox/vmm/iom.h>
40	#include <VBox/vmm/nem.h>
41	#include <VBox/vmm/dbgf.h>
42	#include <VBox/vmm/pgm.h>
43	#include <VBox/vmm/tm.h>
44	#include <VBox/vmm/mm.h>
45	#include <VBox/vmm/ssm.h>
46	#include <VBox/vmm/pdmapi.h>
47	#include <VBox/vmm/pdmcritsect.h>
48	#include <VBox/vmm/pdmqueue.h>
49	#include "EMInternal.h"
50	#include <VBox/vmm/vm.h>
51	#include <VBox/vmm/gim.h>
52	#include <VBox/dis.h>
53	#include <VBox/err.h>
54	#include <VBox/vmm/dbgf.h>
55	#include "VMMTracing.h"
56
57	#include <iprt/asm.h>
58
59	#include "EMInline.h"
60
61
62	/*********************************************************************************************************************************
63	* Internal Functions *
64	*********************************************************************************************************************************/
65	static int emR3NemHandleRC(PVM pVM, PVMCPU pVCpu, int rc);
66	DECLINLINE(int) emR3NemExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
67	static int emR3NemExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
68	static int emR3NemForcedActions(PVM pVM, PVMCPU pVCpu);
69
70	#define EMHANDLERC_WITH_NEM
71	#define emR3ExecuteInstruction emR3NemExecuteInstruction
72	#define emR3ExecuteIOInstruction emR3NemExecuteIOInstruction
73	#include "EMHandleRCTmpl.h"
74
75
76	/**
77	* Executes instruction in NEM mode if we can.
78	*
79	* This is somewhat comparable to REMR3EmulateInstruction.
80	*
81	* @returns VBox strict status code.
82	* @retval VINF_EM_DBG_STEPPED on success.
83	* @retval VERR_EM_CANNOT_EXEC_GUEST if we cannot execute guest instructions in
84	* HM right now.
85	*
86	* @param pVM The cross context VM structure.
87	* @param pVCpu The cross context virtual CPU structure for the calling EMT.
88	* @param fFlags Combinations of EM_ONE_INS_FLAGS_XXX.
89	* @thread EMT.
90	*/
91	VBOXSTRICTRC emR3NemSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
92	{
93	Assert(!(fFlags & ~EM_ONE_INS_FLAGS_MASK));
94
95	if (!NEMR3CanExecuteGuest(pVM, pVCpu))
96	return VINF_EM_RESCHEDULE;
97
98	#ifdef VBOX_VMM_TARGET_ARMV8
99	uint64_t const uOldPc = pVCpu->cpum.GstCtx.Pc.u64;
100	#elif defined(VBOX_VMM_TARGET_X86)
101	uint64_t const uOldRip = pVCpu->cpum.GstCtx.rip;
102	#else
103	# error "port me"
104	#endif
105	for (;;)
106	{
107	/*
108	* Service necessary FFs before going into HM.
109	*/
110	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
111	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
112	{
113	VBOXSTRICTRC rcStrict = emR3NemForcedActions(pVM, pVCpu);
114	if (rcStrict != VINF_SUCCESS)
115	{
116	Log(("emR3NemSingleInstruction: FFs before -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
117	return rcStrict;
118	}
119	}
120
121	/*
122	* Go execute it.
123	*/
124	bool fOld = NEMR3SetSingleInstruction(pVM, pVCpu, true);
125	VBOXSTRICTRC rcStrict = NEMR3RunGC(pVM, pVCpu);
126	NEMR3SetSingleInstruction(pVM, pVCpu, fOld);
127	LogFlow(("emR3NemSingleInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
128
129	/*
130	* Handle high priority FFs and informational status codes. We don't do
131	* normal FF processing the caller or the next call can deal with them.
132	*/
133	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
134	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
135	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
136	{
137	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, rcStrict);
138	LogFlow(("emR3NemSingleInstruction: FFs after -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
139	}
140
141	if (rcStrict != VINF_SUCCESS && (rcStrict < VINF_EM_FIRST \|\| rcStrict > VINF_EM_LAST))
142	{
143	rcStrict = emR3NemHandleRC(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
144	Log(("emR3NemSingleInstruction: emR3NemHandleRC -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
145	}
146
147	/*
148	* Done?
149	*/
150	#ifdef VBOX_VMM_TARGET_ARMV8
151	CPUM_ASSERT_NOT_EXTRN(pVCpu, CPUMCTX_EXTRN_PC);
152	if ( (rcStrict != VINF_SUCCESS && rcStrict != VINF_EM_DBG_STEPPED)
153	\|\| !(fFlags & EM_ONE_INS_FLAGS_RIP_CHANGE)
154	\|\| pVCpu->cpum.GstCtx.Pc.u64 != uOldPc)
155	{
156	if (rcStrict == VINF_SUCCESS && pVCpu->cpum.GstCtx.Pc.u64 != uOldPc)
157	rcStrict = VINF_EM_DBG_STEPPED;
158	Log(("emR3NemSingleInstruction: returns %Rrc (pc %llx -> %llx)\n",
159	VBOXSTRICTRC_VAL(rcStrict), uOldPc, pVCpu->cpum.GstCtx.Pc.u64));
160	CPUM_IMPORT_EXTRN_RET(pVCpu, ~CPUMCTX_EXTRN_KEEPER_MASK);
161	return rcStrict;
162	}
163
164	#elif defined(VBOX_VMM_TARGET_X86)
165	CPUM_ASSERT_NOT_EXTRN(pVCpu, CPUMCTX_EXTRN_RIP);
166	if ( (rcStrict != VINF_SUCCESS && rcStrict != VINF_EM_DBG_STEPPED)
167	\|\| !(fFlags & EM_ONE_INS_FLAGS_RIP_CHANGE)
168	\|\| pVCpu->cpum.GstCtx.rip != uOldRip)
169	{
170	if (rcStrict == VINF_SUCCESS && pVCpu->cpum.GstCtx.rip != uOldRip)
171	rcStrict = VINF_EM_DBG_STEPPED;
172	Log(("emR3NemSingleInstruction: returns %Rrc (rip %llx -> %llx)\n",
173	VBOXSTRICTRC_VAL(rcStrict), uOldRip, pVCpu->cpum.GstCtx.rip));
174	CPUM_IMPORT_EXTRN_RET(pVCpu, ~CPUMCTX_EXTRN_KEEPER_MASK);
175	return rcStrict;
176	}
177
178	#else
179	# error "port me"
180	#endif
181	}
182	}
183
184
185	/**
186	* Executes one (or perhaps a few more) instruction(s).
187	*
188	* @returns VBox status code suitable for EM.
189	*
190	* @param pVM The cross context VM structure.
191	* @param pVCpu The cross context virtual CPU structure.
192	* @param rcRC Return code from RC.
193	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
194	* instruction and prefix the log output with this text.
195	*/
196	#if defined(LOG_ENABLED) \|\| defined(DOXYGEN_RUNNING)
197	static int emR3NemExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
198	#else
199	static int emR3NemExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
200	#endif
201	{
202	NOREF(rcRC);
203
204	#ifdef LOG_ENABLED
205	/*
206	* Log it.
207	*/
208	# ifdef VBOX_VMM_TARGET_ARMV8
209	Log(("EMINS: %RGv SP_EL0=%RGv SP_EL1=%RGv\n", (RTGCPTR)pVCpu->cpum.GstCtx.Pc.u64,
210	(RTGCPTR)pVCpu->cpum.GstCtx.aSpReg[0].u64, (RTGCPTR)pVCpu->cpum.GstCtx.aSpReg[1].u64));
211	if (pszPrefix)
212	{
213	DBGFR3_INFO_LOG(pVM, pVCpu, "cpumguest", pszPrefix);
214	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
215	}
216	# elif defined(VBOX_VMM_TARGET_X86)
217	Log(("EMINS: %04x:%RGv RSP=%RGv\n", pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, (RTGCPTR)pVCpu->cpum.GstCtx.rsp));
218	if (pszPrefix)
219	{
220	DBGFR3_INFO_LOG(pVM, pVCpu, "cpumguest", pszPrefix);
221	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
222	}
223	# else
224	# error "port me"
225	# endif
226	#endif
227
228	/*
229	* Use IEM and fallback on REM if the functionality is missing.
230	* Once IEM gets mature enough, nothing should ever fall back.
231	*/
232	STAM_PROFILE_START(&pVCpu->em.s.StatIEMEmu, a);
233
234	VBOXSTRICTRC rcStrict;
235	uint32_t idxContinueExitRec = pVCpu->em.s.idxContinueExitRec;
236	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
237	if (idxContinueExitRec >= RT_ELEMENTS(pVCpu->em.s.aExitRecords))
238	{
239	CPUM_IMPORT_EXTRN_RET(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
240	rcStrict = IEMExecOne(pVCpu);
241	}
242	else
243	{
244	RT_UNTRUSTED_VALIDATED_FENCE();
245	rcStrict = EMHistoryExec(pVCpu, &pVCpu->em.s.aExitRecords[idxContinueExitRec], 0);
246	LogFlow(("emR3NemExecuteInstruction: %Rrc (EMHistoryExec)\n", VBOXSTRICTRC_VAL(rcStrict)));
247	}
248
249	STAM_PROFILE_STOP(&pVCpu->em.s.StatIEMEmu, a);
250
251	NOREF(pVM);
252	return VBOXSTRICTRC_TODO(rcStrict);
253	}
254
255
256	/**
257	* Executes one (or perhaps a few more) instruction(s).
258	* This is just a wrapper for discarding pszPrefix in non-logging builds.
259	*
260	* @returns VBox status code suitable for EM.
261	* @param pVM The cross context VM structure.
262	* @param pVCpu The cross context virtual CPU structure.
263	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
264	* instruction and prefix the log output with this text.
265	* @param rcGC GC return code
266	*/
267	DECLINLINE(int) emR3NemExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
268	{
269	#ifdef LOG_ENABLED
270	return emR3NemExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
271	#else
272	RT_NOREF_PV(pszPrefix);
273	return emR3NemExecuteInstructionWorker(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 The cross context VM structure.
282	* @param pVCpu The cross context virtual CPU structure.
283	*/
284	static int emR3NemExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
285	{
286	RT_NOREF_PV(pVM);
287	STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
288
289	/*
290	* Hand it over to the interpreter.
291	*/
292	CPUM_IMPORT_EXTRN_RET(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
293	VBOXSTRICTRC rcStrict;
294	uint32_t idxContinueExitRec = pVCpu->em.s.idxContinueExitRec;
295	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
296	if (idxContinueExitRec >= RT_ELEMENTS(pVCpu->em.s.aExitRecords))
297	{
298	rcStrict = IEMExecOne(pVCpu);
299	LogFlow(("emR3NemExecuteIOInstruction: %Rrc (IEMExecOne)\n", VBOXSTRICTRC_VAL(rcStrict)));
300	STAM_COUNTER_INC(&pVCpu->em.s.StatIoIem);
301	}
302	else
303	{
304	RT_UNTRUSTED_VALIDATED_FENCE();
305	rcStrict = EMHistoryExec(pVCpu, &pVCpu->em.s.aExitRecords[idxContinueExitRec], 0);
306	LogFlow(("emR3NemExecuteIOInstruction: %Rrc (EMHistoryExec)\n", VBOXSTRICTRC_VAL(rcStrict)));
307	STAM_COUNTER_INC(&pVCpu->em.s.StatIoRestarted);
308	}
309
310	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
311	return VBOXSTRICTRC_TODO(rcStrict);
312	}
313
314
315	/**
316	* Process NEM specific forced actions.
317	*
318	* This function is called when any FFs in VM_FF_HIGH_PRIORITY_PRE_RAW_MASK
319	* or/and VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK are pending.
320	*
321	* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
322	* EM statuses.
323	* @param pVM The cross context VM structure.
324	* @param pVCpu The cross context virtual CPU structure.
325	*/
326	static int emR3NemForcedActions(PVM pVM, PVMCPU pVCpu)
327	{
328	/*
329	* Sync page directory should not happen in NEM mode.
330	*/
331	if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
332	{
333	Log(("NEM: TODO: Make VMCPU_FF_PGM_SYNC_CR3 / VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL quiet! (%#RX64)\n", (uint64_t)pVCpu->fLocalForcedActions));
334	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
335	}
336
337	#ifndef VBOX_WITH_ONLY_PGM_NEM_MODE
338	/*
339	* Allocate handy pages (just in case the above actions have consumed some pages).
340	*/
341	if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
342	{
343	int rc = PGMR3PhysAllocateHandyPages(pVM);
344	if (RT_FAILURE(rc))
345	return rc;
346	}
347	#endif
348
349	/*
350	* Check whether we're out of memory now.
351	*
352	* This may stem from some of the above actions or operations that has been executed
353	* since we ran FFs. The allocate handy pages must for instance always be followed by
354	* this check.
355	*/
356	if (VM_FF_IS_SET(pVM, VM_FF_PGM_NO_MEMORY))
357	return VINF_EM_NO_MEMORY;
358
359	return VINF_SUCCESS;
360	}
361
362
363	/**
364	* Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
365	*
366	* This function contains the inner EM execution loop for NEM (the outer loop
367	* being in EMR3ExecuteVM()).
368	*
369	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE,
370	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
371	*
372	* @param pVM The cross context VM structure.
373	* @param pVCpu The cross context virtual CPU structure.
374	* @param pfFFDone Where to store an indicator telling whether or not
375	* FFs were done before returning.
376	*/
377	VBOXSTRICTRC emR3NemExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
378	{
379	VBOXSTRICTRC rcStrict = VERR_IPE_UNINITIALIZED_STATUS;
380
381	#ifdef VBOX_VMM_TARGET_ARMV8
382	LogFlow(("emR3NemExecute%d: (pc=%RGv)\n", pVCpu->idCpu, (RTGCPTR)pVCpu->cpum.GstCtx.Pc.u64));
383	#elif defined(VBOX_VMM_TARGET_X86)
384	LogFlow(("emR3NemExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip));
385	#else
386	# error "port me"
387	#endif
388	*pfFFDone = false;
389
390	STAM_REL_COUNTER_INC(&pVCpu->em.s.StatNEMExecuteCalled);
391
392	/*
393	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
394	*/
395	for (;;)
396	{
397	STAM_PROFILE_ADV_START(&pVCpu->em.s.StatNEMEntry, a);
398
399	/*
400	* Check that we can execute in NEM mode.
401	*/
402	if (NEMR3CanExecuteGuest(pVM, pVCpu))
403	{ /* likely */ }
404	else
405	{
406	rcStrict = VINF_EM_RESCHEDULE_REM;
407	break;
408	}
409
410	/*
411	* Process high priority pre-execution raw-mode FFs.
412	*/
413	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
414	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
415	{
416	rcStrict = emR3NemForcedActions(pVM, pVCpu);
417	if (rcStrict != VINF_SUCCESS)
418	break;
419	}
420
421	#ifdef LOG_ENABLED
422	/*
423	* Log important stuff before entering GC.
424	*/
425	# ifdef VBOX_VMM_TARGET_X86
426	if (TRPMHasTrap(pVCpu))
427	Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip));
428
429	if (!(pVCpu->cpum.GstCtx.fExtrn & ( CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_SS
430	\| CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_EFER)))
431	{
432	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
433	if (pVM->cCpus == 1)
434	{
435	if (pVCpu->cpum.GstCtx.eflags.Bits.u1VM)
436	Log(("NEMV86: %08x IF=%d\n", pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.eflags.Bits.u1IF));
437	else if (CPUMIsGuestIn64BitCodeEx(&pVCpu->cpum.GstCtx))
438	Log(("NEMR%d: %04x:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rsp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
439	else
440	Log(("NEMR%d: %04x:%08x ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.esp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
441	}
442	else
443	{
444	if (pVCpu->cpum.GstCtx.eflags.Bits.u1VM)
445	Log(("NEMV86-CPU%d: %08x IF=%d\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.eflags.Bits.u1IF));
446	else if (CPUMIsGuestIn64BitCodeEx(&pVCpu->cpum.GstCtx))
447	Log(("NEMR%d-CPU%d: %04x:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rsp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
448	else
449	Log(("NEMR%d-CPU%d: %04x:%08x ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.esp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
450	}
451	}
452	# elif defined(VBOX_VMM_TARGET_ARMV8)
453	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_PC))
454	{
455	/** @todo better logging */
456	if (pVM->cCpus == 1)
457	Log(("NEM: %RX64\n", pVCpu->cpum.GstCtx.Pc.u64));
458	else
459	Log(("NEM-CPU%d: %RX64\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.Pc.u64));
460	}
461	# else
462	# error "port me"
463	# endif
464	else if (pVM->cCpus == 1)
465	Log(("NEMRx: -> NEMR3RunGC\n"));
466	else
467	Log(("NEMRx-CPU%u: -> NEMR3RunGC\n", pVCpu->idCpu));
468	#endif /* LOG_ENABLED */
469
470	/*
471	* Execute the code.
472	*/
473	if (RT_LIKELY(emR3IsExecutionAllowed(pVM, pVCpu)))
474	{
475	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatNEMEntry, a);
476	STAM_REL_PROFILE_START(&pVCpu->em.s.StatNEMExec, x);
477	rcStrict = NEMR3RunGC(pVM, pVCpu);
478	STAM_REL_PROFILE_STOP(&pVCpu->em.s.StatNEMExec, x);
479	}
480	else
481	{
482	/* Give up this time slice; virtual time continues */
483	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatNEMEntry, a);
484	STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
485	RTThreadSleep(5);
486	STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
487	rcStrict = VINF_SUCCESS;
488	}
489
490
491	/*
492	* Deal with high priority post execution FFs before doing anything else.
493	*/
494	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
495	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
496	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
497	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, rcStrict);
498
499	/*
500	* Process the returned status code.
501	*/
502	if (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST)
503	break;
504
505	rcStrict = emR3NemHandleRC(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
506	if (rcStrict != VINF_SUCCESS)
507	break;
508
509	/*
510	* Check and execute forced actions.
511	*/
512	#ifdef VBOX_HIGH_RES_TIMERS_HACK
513	TMTimerPollVoid(pVM, pVCpu);
514	#endif
515	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_ALL_MASK)
516	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_ALL_MASK))
517	{
518	rcStrict = emR3ForcedActions(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
519	VBOXVMM_EM_FF_ALL_RET(pVCpu, VBOXSTRICTRC_VAL(rcStrict));
520	if ( rcStrict != VINF_SUCCESS
521	&& rcStrict != VINF_EM_RESCHEDULE_EXEC_ENGINE)
522	{
523	*pfFFDone = true;
524	break;
525	}
526	}
527	}
528
529	/*
530	* Return to outer loop, making sure the fetch all state as we leave.
531	*
532	* Note! Not using CPUM_IMPORT_EXTRN_RET here, to prioritize an rcStrict error
533	* status over import errors.
534	*/
535	if (pVCpu->cpum.GstCtx.fExtrn)
536	{
537	int rcImport = NEMImportStateOnDemand(pVCpu, pVCpu->cpum.GstCtx.fExtrn);
538	AssertReturn(RT_SUCCESS(rcImport) \|\| RT_FAILURE_NP(rcStrict), rcImport);
539	}
540	#if defined(LOG_ENABLED) && defined(DEBUG)
541	RTLogFlush(NULL);
542	#endif
543	return rcStrict;
544	}
545

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VMMR3/EMR3Nem.cpp

Download in other formats: