VMMR0.cpp@ 19394

Last change on this file since 19394 was 19382, checked in by vboxsync, 16 years ago
Introduced GVMMR0RegisterVCpu. (not used yet; untested)
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 42.3 KB

Line
1	/* $Id: VMMR0.cpp 19382 2009-05-05 14:56:15Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
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	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_VMM
26	#include <VBox/vmm.h>
27	#include <VBox/sup.h>
28	#include <VBox/trpm.h>
29	#include <VBox/cpum.h>
30	#include <VBox/pgm.h>
31	#include <VBox/stam.h>
32	#include <VBox/tm.h>
33	#include "VMMInternal.h"
34	#include <VBox/vm.h>
35	#include <VBox/gvmm.h>
36	#include <VBox/gmm.h>
37	#include <VBox/intnet.h>
38	#include <VBox/hwaccm.h>
39	#include <VBox/param.h>
40
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44	#include <iprt/assert.h>
45	#include <iprt/stdarg.h>
46	#include <iprt/mp.h>
47	#include <iprt/string.h>
48
49	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
50	# pragma intrinsic(_AddressOfReturnAddress)
51	#endif
52
53
54	/*******************************************************************************
55	* Internal Functions *
56	*******************************************************************************/
57	__BEGIN_DECLS
58	VMMR0DECL(int) ModuleInit(void);
59	VMMR0DECL(void) ModuleTerm(void);
60	__END_DECLS
61
62
63	/*******************************************************************************
64	* Global Variables *
65	*******************************************************************************/
66	/** Pointer to the internal networking service instance. */
67	PINTNET g_pIntNet = 0;
68
69
70	/**
71	* Initialize the module.
72	* This is called when we're first loaded.
73	*
74	* @returns 0 on success.
75	* @returns VBox status on failure.
76	*/
77	VMMR0DECL(int) ModuleInit(void)
78	{
79	LogFlow(("ModuleInit:\n"));
80
81	/*
82	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
83	*/
84	int rc = GVMMR0Init();
85	if (RT_SUCCESS(rc))
86	{
87	rc = GMMR0Init();
88	if (RT_SUCCESS(rc))
89	{
90	rc = HWACCMR0Init();
91	if (RT_SUCCESS(rc))
92	{
93	rc = PGMRegisterStringFormatTypes();
94	if (RT_SUCCESS(rc))
95	{
96	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
97	rc = PGMR0DynMapInit();
98	#endif
99	if (RT_SUCCESS(rc))
100	{
101	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
102	g_pIntNet = NULL;
103	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
104	rc = INTNETR0Create(&g_pIntNet);
105	if (RT_SUCCESS(rc))
106	{
107	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
108	return VINF_SUCCESS;
109	}
110
111	/* bail out */
112	g_pIntNet = NULL;
113	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
114	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
115	PGMR0DynMapTerm();
116	#endif
117	}
118	PGMDeregisterStringFormatTypes();
119	}
120	HWACCMR0Term();
121	}
122	GMMR0Term();
123	}
124	GVMMR0Term();
125	}
126
127	LogFlow(("ModuleInit: failed %Rrc\n", rc));
128	return rc;
129	}
130
131
132	/**
133	* Terminate the module.
134	* This is called when we're finally unloaded.
135	*/
136	VMMR0DECL(void) ModuleTerm(void)
137	{
138	LogFlow(("ModuleTerm:\n"));
139
140	/*
141	* Destroy the internal networking instance.
142	*/
143	if (g_pIntNet)
144	{
145	INTNETR0Destroy(g_pIntNet);
146	g_pIntNet = NULL;
147	}
148
149	/*
150	* PGM (Darwin) and HWACCM global cleanup.
151	* Destroy the GMM and GVMM instances.
152	*/
153	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
154	PGMR0DynMapTerm();
155	#endif
156	PGMDeregisterStringFormatTypes();
157	HWACCMR0Term();
158
159	GMMR0Term();
160	GVMMR0Term();
161
162	LogFlow(("ModuleTerm: returns\n"));
163	}
164
165
166	/**
167	* Initaties the R0 driver for a particular VM instance.
168	*
169	* @returns VBox status code.
170	*
171	* @param pVM The VM instance in question.
172	* @param uSvnRev The SVN revision of the ring-3 part.
173	* @thread EMT.
174	*/
175	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
176	{
177	/*
178	* Match the SVN revisions.
179	*/
180	if (uSvnRev != VMMGetSvnRev())
181	{
182	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
183	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
184	return VERR_VERSION_MISMATCH;
185	}
186	if ( !VALID_PTR(pVM)
187	\|\| pVM->pVMR0 != pVM)
188	return VERR_INVALID_PARAMETER;
189
190	/*
191	* Register the EMT R0 logger instance.
192	*/
193	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0LoggerR0;
194	if (pR0Logger)
195	{
196	#if 0 /* testing of the logger. */
197	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
198	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
199	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
200	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
201
202	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
203	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
204	RTLogSetDefaultInstanceThread(NULL, 0);
205	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
206
207	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
208	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
209	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
210	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
211
212	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
213	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
214	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
215	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
216	RTLogSetDefaultInstanceThread(NULL, 0);
217	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
218
219	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
220	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
221
222	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
223	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
224	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
225	#endif
226	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
227	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
228	}
229
230	/*
231	* Initialize the per VM data for GVMM and GMM.
232	*/
233	int rc = GVMMR0InitVM(pVM);
234	// if (RT_SUCCESS(rc))
235	// rc = GMMR0InitPerVMData(pVM);
236	if (RT_SUCCESS(rc))
237	{
238	/*
239	* Init HWACCM, CPUM and PGM (Darwin only).
240	*/
241	rc = HWACCMR0InitVM(pVM);
242	if (RT_SUCCESS(rc))
243	{
244	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
245	if (RT_SUCCESS(rc))
246	{
247	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
248	rc = PGMR0DynMapInitVM(pVM);
249	#endif
250	if (RT_SUCCESS(rc))
251	{
252	GVMMR0DoneInitVM(pVM);
253	return rc;
254	}
255
256	/* bail out */
257	}
258	HWACCMR0TermVM(pVM);
259	}
260	}
261	RTLogSetDefaultInstanceThread(NULL, 0);
262	return rc;
263	}
264
265
266	/**
267	* Terminates the R0 driver for a particular VM instance.
268	*
269	* This is normally called by ring-3 as part of the VM termination process, but
270	* may alternatively be called during the support driver session cleanup when
271	* the VM object is destroyed (see GVMM).
272	*
273	* @returns VBox status code.
274	*
275	* @param pVM The VM instance in question.
276	* @param pGVM Pointer to the global VM structure. Optional.
277	* @thread EMT or session clean up thread.
278	*/
279	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
280	{
281	/*
282	* Tell GVMM what we're up to and check that we only do this once.
283	*/
284	if (GVMMR0DoingTermVM(pVM, pGVM))
285	{
286	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
287	PGMR0DynMapTermVM(pVM);
288	#endif
289	HWACCMR0TermVM(pVM);
290	}
291
292	/*
293	* Deregister the logger.
294	*/
295	RTLogSetDefaultInstanceThread(NULL, 0);
296	return VINF_SUCCESS;
297	}
298
299
300	/**
301	* Calls the ring-3 host code.
302	*
303	* @returns VBox status code of the ring-3 call.
304	* @param pVM The VM handle.
305	* @param enmOperation The operation.
306	* @param uArg The argument to the operation.
307	*/
308	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
309	{
310	/** @todo profile this! */
311	pVM->vmm.s.enmCallHostOperation = enmOperation;
312	pVM->vmm.s.u64CallHostArg = uArg;
313	pVM->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
314	int rc = vmmR0CallHostLongJmp(&pVM->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
315	if (rc == VINF_SUCCESS)
316	rc = pVM->vmm.s.rcCallHost;
317	return rc;
318	}
319
320
321	#ifdef VBOX_WITH_STATISTICS
322	/**
323	* Record return code statistics
324	* @param pVM The VM handle.
325	* @param rc The status code.
326	*/
327	static void vmmR0RecordRC(PVM pVM, int rc)
328	{
329	/*
330	* Collect statistics.
331	*/
332	switch (rc)
333	{
334	case VINF_SUCCESS:
335	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
336	break;
337	case VINF_EM_RAW_INTERRUPT:
338	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
339	break;
340	case VINF_EM_RAW_INTERRUPT_HYPER:
341	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
342	break;
343	case VINF_EM_RAW_GUEST_TRAP:
344	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
345	break;
346	case VINF_EM_RAW_RING_SWITCH:
347	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
348	break;
349	case VINF_EM_RAW_RING_SWITCH_INT:
350	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
351	break;
352	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
353	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetExceptionPrivilege);
354	break;
355	case VINF_EM_RAW_STALE_SELECTOR:
356	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
357	break;
358	case VINF_EM_RAW_IRET_TRAP:
359	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
360	break;
361	case VINF_IOM_HC_IOPORT_READ:
362	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
363	break;
364	case VINF_IOM_HC_IOPORT_WRITE:
365	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
366	break;
367	case VINF_IOM_HC_MMIO_READ:
368	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
369	break;
370	case VINF_IOM_HC_MMIO_WRITE:
371	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
372	break;
373	case VINF_IOM_HC_MMIO_READ_WRITE:
374	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
375	break;
376	case VINF_PATM_HC_MMIO_PATCH_READ:
377	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
378	break;
379	case VINF_PATM_HC_MMIO_PATCH_WRITE:
380	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
381	break;
382	case VINF_EM_RAW_EMULATE_INSTR:
383	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
384	break;
385	case VINF_EM_RAW_EMULATE_IO_BLOCK:
386	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
387	break;
388	case VINF_PATCH_EMULATE_INSTR:
389	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
390	break;
391	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
392	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
393	break;
394	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
395	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
396	break;
397	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
398	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
399	break;
400	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
401	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
402	break;
403	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
404	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
405	break;
406	case VINF_CSAM_PENDING_ACTION:
407	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
408	break;
409	case VINF_PGM_SYNC_CR3:
410	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
411	break;
412	case VINF_PATM_PATCH_INT3:
413	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
414	break;
415	case VINF_PATM_PATCH_TRAP_PF:
416	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
417	break;
418	case VINF_PATM_PATCH_TRAP_GP:
419	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
420	break;
421	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
422	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
423	break;
424	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
425	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPageOverflow);
426	break;
427	case VINF_EM_RESCHEDULE_REM:
428	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
429	break;
430	case VINF_EM_RAW_TO_R3:
431	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
432	break;
433	case VINF_EM_RAW_TIMER_PENDING:
434	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
435	break;
436	case VINF_EM_RAW_INTERRUPT_PENDING:
437	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
438	break;
439	case VINF_VMM_CALL_HOST:
440	switch (pVM->vmm.s.enmCallHostOperation)
441	{
442	case VMMCALLHOST_PDM_LOCK:
443	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
444	break;
445	case VMMCALLHOST_PDM_QUEUE_FLUSH:
446	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
447	break;
448	case VMMCALLHOST_PGM_POOL_GROW:
449	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
450	break;
451	case VMMCALLHOST_PGM_LOCK:
452	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
453	break;
454	case VMMCALLHOST_PGM_MAP_CHUNK:
455	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
456	break;
457	case VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES:
458	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
459	break;
460	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
461	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
462	break;
463	case VMMCALLHOST_VMM_LOGGER_FLUSH:
464	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
465	break;
466	case VMMCALLHOST_VM_SET_ERROR:
467	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
468	break;
469	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
470	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
471	break;
472	case VMMCALLHOST_VM_R0_ASSERTION:
473	default:
474	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallHost);
475	break;
476	}
477	break;
478	case VINF_PATM_DUPLICATE_FUNCTION:
479	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
480	break;
481	case VINF_PGM_CHANGE_MODE:
482	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
483	break;
484	case VINF_EM_RAW_EMULATE_INSTR_HLT:
485	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulHlt);
486	break;
487	case VINF_EM_PENDING_REQUEST:
488	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
489	break;
490	default:
491	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
492	break;
493	}
494	}
495	#endif /* VBOX_WITH_STATISTICS */
496
497
498	/**
499	* Unused ring-0 entry point that used to be called from the interrupt gate.
500	*
501	* Will be removed one of the next times we do a major SUPDrv version bump.
502	*
503	* @returns VBox status code.
504	* @param pVM The VM to operate on.
505	* @param enmOperation Which operation to execute.
506	* @param pvArg Argument to the operation.
507	* @remarks Assume called with interrupts disabled.
508	*/
509	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
510	{
511	/*
512	* We're returning VERR_NOT_SUPPORT here so we've got something else
513	* than -1 which the interrupt gate glue code might return.
514	*/
515	Log(("operation %#x is not supported\n", enmOperation));
516	return VERR_NOT_SUPPORTED;
517	}
518
519
520	/**
521	* The Ring 0 entry point, called by the fast-ioctl path.
522	*
523	* @param pVM The VM to operate on.
524	* The return code is stored in pVM->vmm.s.iLastGZRc.
525	* @param idCpu VMCPU id.
526	* @param enmOperation Which operation to execute.
527	* @remarks Assume called with interrupts _enabled_.
528	*/
529	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, unsigned idCpu, VMMR0OPERATION enmOperation)
530	{
531	PVMCPU pVCpu = &pVM->aCpus[idCpu];
532
533	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
534	{
535	pVM->vmm.s.iLastGZRc = VERR_INVALID_PARAMETER;
536	return;
537	}
538
539	switch (enmOperation)
540	{
541	/*
542	* Switch to GC and run guest raw mode code.
543	* Disable interrupts before doing the world switch.
544	*/
545	case VMMR0_DO_RAW_RUN:
546	{
547	/* Safety precaution as hwaccm disables the switcher. */
548	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
549	{
550	RTCCUINTREG uFlags = ASMIntDisableFlags();
551	int rc;
552	bool fVTxDisabled;
553
554	if (RT_UNLIKELY(pVM->cCPUs > 1))
555	{
556	pVM->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
557	return;
558	}
559
560	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
561	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
562	{
563	pVM->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
564	return;
565	}
566	#endif
567
568	/* We might need to disable VT-x if the active switcher turns off paging. */
569	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
570	if (RT_FAILURE(rc))
571	{
572	pVM->vmm.s.iLastGZRc = rc;
573	return;
574	}
575
576	TMNotifyStartOfExecution(pVCpu);
577	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
578	pVM->vmm.s.iLastGZRc = rc;
579	TMNotifyEndOfExecution(pVCpu);
580
581	/* Re-enable VT-x if previously turned off. */
582	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
583
584	if ( rc == VINF_EM_RAW_INTERRUPT
585	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
586	TRPMR0DispatchHostInterrupt(pVM);
587
588	ASMSetFlags(uFlags);
589
590	#ifdef VBOX_WITH_STATISTICS
591	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
592	vmmR0RecordRC(pVM, rc);
593	#endif
594	}
595	else
596	{
597	Assert(!pVM->vmm.s.fSwitcherDisabled);
598	pVM->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
599	}
600	break;
601	}
602
603	/*
604	* Run guest code using the available hardware acceleration technology.
605	*
606	* Disable interrupts before we do anything interesting. On Windows we avoid
607	* this by having the support driver raise the IRQL before calling us, this way
608	* we hope to get away with page faults and later calling into the kernel.
609	*/
610	case VMMR0_DO_HWACC_RUN:
611	{
612	int rc;
613	PVMCPU pVCpu = &pVM->aCpus[idCpu];
614
615	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
616
617	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
618	RTCCUINTREG uFlags = ASMIntDisableFlags();
619	#endif
620	if (!HWACCMR0SuspendPending())
621	{
622	rc = HWACCMR0Enter(pVM, pVCpu);
623	if (RT_SUCCESS(rc))
624	{
625	rc = vmmR0CallHostSetJmp(&pVM->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
626	int rc2 = HWACCMR0Leave(pVM, pVCpu);
627	AssertRC(rc2);
628	}
629	}
630	else
631	{
632	/* System is about to go into suspend mode; go back to ring 3. */
633	rc = VINF_EM_RAW_INTERRUPT;
634	}
635	pVM->vmm.s.iLastGZRc = rc;
636	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
637	ASMSetFlags(uFlags);
638	#endif
639
640	#ifdef VBOX_WITH_STATISTICS
641	vmmR0RecordRC(pVM, rc);
642	#endif
643	/* No special action required for external interrupts, just return. */
644	break;
645	}
646
647	/*
648	* For profiling.
649	*/
650	case VMMR0_DO_NOP:
651	pVM->vmm.s.iLastGZRc = VINF_SUCCESS;
652	break;
653
654	/*
655	* Impossible.
656	*/
657	default:
658	AssertMsgFailed(("%#x\n", enmOperation));
659	pVM->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
660	break;
661	}
662	}
663
664
665	/**
666	* Validates a session or VM session argument.
667	*
668	* @returns true / false accordingly.
669	* @param pVM The VM argument.
670	* @param pSession The session argument.
671	*/
672	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
673	{
674	/* This must be set! */
675	if (!pSession)
676	return false;
677
678	/* Only one out of the two. */
679	if (pVM && pClaimedSession)
680	return false;
681	if (pVM)
682	pClaimedSession = pVM->pSession;
683	return pClaimedSession == pSession;
684	}
685
686
687	/**
688	* VMMR0EntryEx worker function, either called directly or when ever possible
689	* called thru a longjmp so we can exit safely on failure.
690	*
691	* @returns VBox status code.
692	* @param pVM The VM to operate on.
693	* @param idCpu VMCPU id.
694	* @param enmOperation Which operation to execute.
695	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
696	* The support driver validates this if it's present.
697	* @param u64Arg Some simple constant argument.
698	* @param pSession The session of the caller.
699	* @remarks Assume called with interrupts _enabled_.
700	*/
701	static int vmmR0EntryExWorker(PVM pVM, unsigned idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
702	{
703	/*
704	* Common VM pointer validation.
705	*/
706	if (pVM)
707	{
708	if (RT_UNLIKELY( !VALID_PTR(pVM)
709	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
710	{
711	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
712	return VERR_INVALID_POINTER;
713	}
714	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
715	\|\| pVM->enmVMState > VMSTATE_TERMINATED
716	\|\| pVM->pVMR0 != pVM))
717	{
718	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
719	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
720	return VERR_INVALID_POINTER;
721	}
722
723	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
724	{
725	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%d vs cCPUs=%d\n", idCpu, pVM->cCPUs);
726	return VERR_INVALID_PARAMETER;
727	}
728	}
729
730	switch (enmOperation)
731	{
732	/*
733	* GVM requests
734	*/
735	case VMMR0_DO_GVMM_CREATE_VM:
736	if (pVM \|\| u64Arg)
737	return VERR_INVALID_PARAMETER;
738	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
739
740	case VMMR0_DO_GVMM_DESTROY_VM:
741	if (pReqHdr \|\| u64Arg)
742	return VERR_INVALID_PARAMETER;
743	return GVMMR0DestroyVM(pVM);
744
745	case VMMR0_DO_GVMM_REGISTER_VMCPU:
746	if (!pVM)
747	return VERR_INVALID_PARAMETER;
748	return GVMMR0RegisterVCpu(pVM, idCpu);
749
750	case VMMR0_DO_GVMM_SCHED_HALT:
751	if (pReqHdr)
752	return VERR_INVALID_PARAMETER;
753	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
754
755	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
756	if (pReqHdr \|\| u64Arg)
757	return VERR_INVALID_PARAMETER;
758	return GVMMR0SchedWakeUp(pVM, idCpu);
759
760	case VMMR0_DO_GVMM_SCHED_POLL:
761	if (pReqHdr \|\| u64Arg > 1)
762	return VERR_INVALID_PARAMETER;
763	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
764
765	case VMMR0_DO_GVMM_QUERY_STATISTICS:
766	if (u64Arg)
767	return VERR_INVALID_PARAMETER;
768	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
769
770	case VMMR0_DO_GVMM_RESET_STATISTICS:
771	if (u64Arg)
772	return VERR_INVALID_PARAMETER;
773	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
774
775	/*
776	* Initialize the R0 part of a VM instance.
777	*/
778	case VMMR0_DO_VMMR0_INIT:
779	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
780
781	/*
782	* Terminate the R0 part of a VM instance.
783	*/
784	case VMMR0_DO_VMMR0_TERM:
785	return VMMR0TermVM(pVM, NULL);
786
787	/*
788	* Attempt to enable hwacc mode and check the current setting.
789	*
790	*/
791	case VMMR0_DO_HWACC_ENABLE:
792	return HWACCMR0EnableAllCpus(pVM);
793
794	/*
795	* Setup the hardware accelerated raw-mode session.
796	*/
797	case VMMR0_DO_HWACC_SETUP_VM:
798	{
799	RTCCUINTREG fFlags = ASMIntDisableFlags();
800	int rc = HWACCMR0SetupVM(pVM);
801	ASMSetFlags(fFlags);
802	return rc;
803	}
804
805	/*
806	* Switch to GC to execute Hypervisor function.
807	*/
808	case VMMR0_DO_CALL_HYPERVISOR:
809	{
810	int rc;
811	bool fVTxDisabled;
812
813	/* Safety precaution as HWACCM can disable the switcher. */
814	Assert(!pVM->vmm.s.fSwitcherDisabled);
815	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
816	return VERR_NOT_SUPPORTED;
817
818	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
819	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
820	return VERR_PGM_NO_CR3_SHADOW_ROOT;
821	#endif
822
823	RTCCUINTREG fFlags = ASMIntDisableFlags();
824
825	/* We might need to disable VT-x if the active switcher turns off paging. */
826	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
827	if (RT_FAILURE(rc))
828	return rc;
829
830	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
831
832	/* Re-enable VT-x if previously turned off. */
833	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
834
835	/** @todo dispatch interrupts? */
836	ASMSetFlags(fFlags);
837	return rc;
838	}
839
840	/*
841	* PGM wrappers.
842	*/
843	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
844	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
845
846	/*
847	* GMM wrappers.
848	*/
849	case VMMR0_DO_GMM_INITIAL_RESERVATION:
850	if (u64Arg)
851	return VERR_INVALID_PARAMETER;
852	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
853
854	case VMMR0_DO_GMM_UPDATE_RESERVATION:
855	if (u64Arg)
856	return VERR_INVALID_PARAMETER;
857	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
858
859	case VMMR0_DO_GMM_ALLOCATE_PAGES:
860	if (u64Arg)
861	return VERR_INVALID_PARAMETER;
862	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
863
864	case VMMR0_DO_GMM_FREE_PAGES:
865	if (u64Arg)
866	return VERR_INVALID_PARAMETER;
867	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
868
869	case VMMR0_DO_GMM_BALLOONED_PAGES:
870	if (u64Arg)
871	return VERR_INVALID_PARAMETER;
872	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
873
874	case VMMR0_DO_GMM_DEFLATED_BALLOON:
875	if (pReqHdr)
876	return VERR_INVALID_PARAMETER;
877	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
878
879	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
880	if (u64Arg)
881	return VERR_INVALID_PARAMETER;
882	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
883
884	case VMMR0_DO_GMM_SEED_CHUNK:
885	if (pReqHdr)
886	return VERR_INVALID_PARAMETER;
887	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
888
889	/*
890	* A quick GCFGM mock-up.
891	*/
892	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
893	case VMMR0_DO_GCFGM_SET_VALUE:
894	case VMMR0_DO_GCFGM_QUERY_VALUE:
895	{
896	if (pVM \|\| !pReqHdr \|\| u64Arg)
897	return VERR_INVALID_PARAMETER;
898	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
899	if (pReq->Hdr.cbReq != sizeof(*pReq))
900	return VERR_INVALID_PARAMETER;
901	int rc;
902	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
903	{
904	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
905	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
906	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
907	}
908	else
909	{
910	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
911	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
912	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
913	}
914	return rc;
915	}
916
917
918	/*
919	* Requests to the internal networking service.
920	*/
921	case VMMR0_DO_INTNET_OPEN:
922	{
923	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
924	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession))
925	return VERR_INVALID_PARAMETER;
926	if (!g_pIntNet)
927	return VERR_NOT_SUPPORTED;
928	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
929	}
930
931	case VMMR0_DO_INTNET_IF_CLOSE:
932	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession))
933	return VERR_INVALID_PARAMETER;
934	if (!g_pIntNet)
935	return VERR_NOT_SUPPORTED;
936	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
937
938	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
939	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession))
940	return VERR_INVALID_PARAMETER;
941	if (!g_pIntNet)
942	return VERR_NOT_SUPPORTED;
943	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
944
945	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
946	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession))
947	return VERR_INVALID_PARAMETER;
948	if (!g_pIntNet)
949	return VERR_NOT_SUPPORTED;
950	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
951
952	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
953	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession))
954	return VERR_INVALID_PARAMETER;
955	if (!g_pIntNet)
956	return VERR_NOT_SUPPORTED;
957	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
958
959	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
960	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession))
961	return VERR_INVALID_PARAMETER;
962	if (!g_pIntNet)
963	return VERR_NOT_SUPPORTED;
964	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
965
966	case VMMR0_DO_INTNET_IF_SEND:
967	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession))
968	return VERR_INVALID_PARAMETER;
969	if (!g_pIntNet)
970	return VERR_NOT_SUPPORTED;
971	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
972
973	case VMMR0_DO_INTNET_IF_WAIT:
974	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession))
975	return VERR_INVALID_PARAMETER;
976	if (!g_pIntNet)
977	return VERR_NOT_SUPPORTED;
978	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
979
980	/*
981	* For profiling.
982	*/
983	case VMMR0_DO_NOP:
984	case VMMR0_DO_SLOW_NOP:
985	return VINF_SUCCESS;
986
987	/*
988	* For testing Ring-0 APIs invoked in this environment.
989	*/
990	case VMMR0_DO_TESTS:
991	/** @todo make new test */
992	return VINF_SUCCESS;
993
994
995	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
996	case VMMR0_DO_TEST_SWITCHER3264:
997	return HWACCMR0TestSwitcher3264(pVM);
998	#endif
999	default:
1000	/*
1001	* We're returning VERR_NOT_SUPPORT here so we've got something else
1002	* than -1 which the interrupt gate glue code might return.
1003	*/
1004	Log(("operation %#x is not supported\n", enmOperation));
1005	return VERR_NOT_SUPPORTED;
1006	}
1007	}
1008
1009
1010	/**
1011	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1012	*/
1013	typedef struct VMMR0ENTRYEXARGS
1014	{
1015	PVM pVM;
1016	unsigned idCpu;
1017	VMMR0OPERATION enmOperation;
1018	PSUPVMMR0REQHDR pReq;
1019	uint64_t u64Arg;
1020	PSUPDRVSESSION pSession;
1021	} VMMR0ENTRYEXARGS;
1022	/** Pointer to a vmmR0EntryExWrapper argument package. */
1023	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1024
1025	/**
1026	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1027	*
1028	* @returns VBox status code.
1029	* @param pvArgs The argument package
1030	*/
1031	static int vmmR0EntryExWrapper(void *pvArgs)
1032	{
1033	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1034	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1035	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1036	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1037	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1038	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1039	}
1040
1041
1042	/**
1043	* The Ring 0 entry point, called by the support library (SUP).
1044	*
1045	* @returns VBox status code.
1046	* @param pVM The VM to operate on.
1047	* @param idCpu VMCPU id.
1048	* @param enmOperation Which operation to execute.
1049	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1050	* @param u64Arg Some simple constant argument.
1051	* @param pSession The session of the caller.
1052	* @remarks Assume called with interrupts _enabled_.
1053	*/
1054	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, unsigned idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1055	{
1056	/*
1057	* Requests that should only happen on the EMT thread will be
1058	* wrapped in a setjmp so we can assert without causing trouble.
1059	*/
1060	if ( VALID_PTR(pVM)
1061	&& pVM->pVMR0)
1062	{
1063	switch (enmOperation)
1064	{
1065	/* These might/will be called before VMMR3Init. */
1066	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1067	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1068	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1069	case VMMR0_DO_GMM_FREE_PAGES:
1070	case VMMR0_DO_GMM_BALLOONED_PAGES:
1071	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1072	/* On the mac we might not have a valid jmp buf, so check these as well. */
1073	case VMMR0_DO_VMMR0_INIT:
1074	case VMMR0_DO_VMMR0_TERM:
1075	{
1076	if (!pVM->vmm.s.CallHostR0JmpBuf.pvSavedStack)
1077	break;
1078
1079	/** @todo validate this EMT claim... GVM knows. */
1080	VMMR0ENTRYEXARGS Args;
1081	Args.pVM = pVM;
1082	Args.idCpu = idCpu;
1083	Args.enmOperation = enmOperation;
1084	Args.pReq = pReq;
1085	Args.u64Arg = u64Arg;
1086	Args.pSession = pSession;
1087	return vmmR0CallHostSetJmpEx(&pVM->vmm.s.CallHostR0JmpBuf, vmmR0EntryExWrapper, &Args);
1088	}
1089
1090	default:
1091	break;
1092	}
1093	}
1094	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1095	}
1096
1097
1098	/**
1099	* Internal R0 logger worker: Flush logger.
1100	*
1101	* @param pLogger The logger instance to flush.
1102	* @remark This function must be exported!
1103	*/
1104	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1105	{
1106	/*
1107	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1108	* (This is a bit paranoid code.)
1109	*/
1110	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1111	if ( !VALID_PTR(pR0Logger)
1112	\|\| !VALID_PTR(pR0Logger + 1)
1113	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1114	{
1115	#ifdef DEBUG
1116	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1117	#endif
1118	return;
1119	}
1120	if (pR0Logger->fFlushingDisabled)
1121	return; /* quietly */
1122
1123	PVM pVM = pR0Logger->pVM;
1124	if ( !VALID_PTR(pVM)
1125	\|\| pVM->pVMR0 != pVM)
1126	{
1127	#ifdef DEBUG
1128	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1129	#endif
1130	return;
1131	}
1132
1133	/*
1134	* Check that the jump buffer is armed.
1135	*/
1136	#ifdef RT_ARCH_X86
1137	if ( !pVM->vmm.s.CallHostR0JmpBuf.eip
1138	\|\| pVM->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1139	#else
1140	if ( !pVM->vmm.s.CallHostR0JmpBuf.rip
1141	\|\| pVM->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1142	#endif
1143	{
1144	#ifdef DEBUG
1145	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1146	#endif
1147	return;
1148	}
1149	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
1150	}
1151
1152
1153	/**
1154	* Disables flushing of the ring-0 debug log.
1155	*
1156	* @param pVCpu The shared virtual cpu structure.
1157	*/
1158	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1159	{
1160	PVM pVM = pVCpu->pVMR0;
1161	if (pVM->vmm.s.pR0LoggerR0)
1162	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1163	}
1164
1165
1166	/**
1167	* Enables flushing of the ring-0 debug log.
1168	*
1169	* @param pVCpu The shared virtual cpu structure.
1170	*/
1171	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1172	{
1173	PVM pVM = pVCpu->pVMR0;
1174	if (pVM->vmm.s.pR0LoggerR0)
1175	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1176	}
1177
1178
1179	/**
1180	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1181	*
1182	* @returns true if the breakpoint should be hit, false if it should be ignored.
1183	*/
1184	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1185	{
1186	#if 0
1187	return true;
1188	#else
1189	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1190	if (pVM)
1191	{
1192	#ifdef RT_ARCH_X86
1193	if ( pVM->vmm.s.CallHostR0JmpBuf.eip
1194	&& !pVM->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1195	#else
1196	if ( pVM->vmm.s.CallHostR0JmpBuf.rip
1197	&& !pVM->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1198	#endif
1199	{
1200	int rc = VMMR0CallHost(pVM, VMMCALLHOST_VM_R0_ASSERTION, 0);
1201	return RT_FAILURE_NP(rc);
1202	}
1203	}
1204	#ifdef RT_OS_LINUX
1205	return true;
1206	#else
1207	return false;
1208	#endif
1209	#endif
1210	}
1211
1212
1213	/**
1214	* Override this so we can push it up to ring-3.
1215	*
1216	* @param pszExpr Expression. Can be NULL.
1217	* @param uLine Location line number.
1218	* @param pszFile Location file name.
1219	* @param pszFunction Location function name.
1220	*/
1221	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1222	{
1223	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1224	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1225	"Expression: %s\n"
1226	"Location : %s(%d) %s\n",
1227	pszExpr, pszFile, uLine, pszFunction);
1228	#endif
1229	LogAlways(("\n!!R0-Assertion Failed!!\n"
1230	"Expression: %s\n"
1231	"Location : %s(%d) %s\n",
1232	pszExpr, pszFile, uLine, pszFunction));
1233
1234	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1235	if (pVM)
1236	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1237	"\n!!R0-Assertion Failed!!\n"
1238	"Expression: %s\n"
1239	"Location : %s(%d) %s\n",
1240	pszExpr, pszFile, uLine, pszFunction);
1241	#ifdef RT_OS_DARWIN
1242	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1243	#endif
1244	}
1245
1246
1247	/**
1248	* Callback for RTLogFormatV which writes to the ring-3 log port.
1249	* See PFNLOGOUTPUT() for details.
1250	*/
1251	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1252	{
1253	for (size_t i = 0; i < cbChars; i++)
1254	{
1255	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1256	SUPR0Printf("%c", pachChars[i]);
1257	#endif
1258	LogAlways(("%c", pachChars[i]));
1259	}
1260
1261	return cbChars;
1262	}
1263
1264
1265	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1266	{
1267	va_list va;
1268
1269	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1270	if (pLog)
1271	{
1272	va_start(va, pszFormat);
1273	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1274	va_end(va);
1275
1276	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1277	if (pVM)
1278	{
1279	va_start(va, pszFormat);
1280	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1281	va_end(va);
1282	}
1283	}
1284
1285	#ifdef RT_OS_DARWIN
1286	va_start(va, pszFormat);
1287	RTAssertMsg2V(pszFormat, va);
1288	va_end(va);
1289	#endif
1290	}
1291

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 19394

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