VMMR0.cpp@ 1

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1	/** @file
2	*
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_VMM
27	#ifdef __AMD64__ /** @todo fix logging on __AMD64__ (swapgs) */
28	# define LOG_DISABLED
29	#endif
30	#include <VBox/vmm.h>
31	#include <VBox/sup.h>
32	#include <VBox/trpm.h>
33	#include <VBox/cpum.h>
34	#include <VBox/stam.h>
35	#include <VBox/tm.h>
36	#include "VMMInternal.h"
37	#include <VBox/vm.h>
38	#include <VBox/intnet.h>
39	#include <VBox/hwaccm.h>
40
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44	#include <iprt/assert.h>
45
46
47	/*******************************************************************************
48	* Internal Functions *
49	*******************************************************************************/
50	static int VMMR0Init(PVM pVM, unsigned uVersion);
51	static int VMMR0Term(PVM pVM);
52	__BEGIN_DECLS
53	VMMR0DECL(int) ModuleInit(void);
54	VMMR0DECL(void) ModuleTerm(void);
55	__END_DECLS
56
57
58	//#define DEBUG_NO_RING0_ASSERTIONS
59	#ifdef DEBUG_NO_RING0_ASSERTIONS
60	static PVM g_pVMAssert = 0;
61	#endif
62
63	/*******************************************************************************
64	* Global Variables *
65	*******************************************************************************/
66	#ifndef __AMD64__ /* doesn't link here */
67	/** Pointer to the internal networking service instance. */
68	PINTNET g_pIntNet = 0;
69	#endif
70
71
72	/**
73	* Initialize the module.
74	* This is called when we're first loaded.
75	*
76	* @returns 0 on success.
77	* @returns VBox status on failure.
78	*/
79	VMMR0DECL(int) ModuleInit(void)
80	{
81	#ifndef __AMD64__ /* doesn't link here */
82	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
83	g_pIntNet = NULL;
84	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
85	int rc = INTNETR0Create(&g_pIntNet);
86	if (VBOX_SUCCESS(rc))
87	{
88	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
89	return 0;
90	}
91	g_pIntNet = NULL;
92	LogFlow(("ModuleTerm: returns %Vrc\n", rc));
93	return rc;
94	#else
95	return 0;
96	#endif
97	}
98
99
100	/**
101	* Terminate the module.
102	* This is called when we're finally unloaded.
103	*/
104	VMMR0DECL(void) ModuleTerm(void)
105	{
106	#ifndef __AMD64__ /* doesn't link here */
107	LogFlow(("ModuleTerm:\n"));
108	if (g_pIntNet)
109	{
110	INTNETR0Destroy(g_pIntNet);
111	g_pIntNet = NULL;
112	}
113	LogFlow(("ModuleTerm: returns\n"));
114	#endif
115	}
116
117
118	/**
119	* Initaties the R0 driver for a particular VM instance.
120	*
121	* @returns VBox status code.
122	*
123	* @param pVM The VM instance in question.
124	* @param uVersion The minimum module version required.
125	*/
126	static int VMMR0Init(PVM pVM, unsigned uVersion)
127	{
128	/*
129	* Check if compatible version.
130	*/
131	if ( uVersion != VBOX_VERSION
132	&& ( VBOX_GET_VERSION_MAJOR(uVersion) != VBOX_VERSION_MAJOR
133	\|\| VBOX_GET_VERSION_MINOR(uVersion) < VBOX_VERSION_MINOR))
134	return VERR_VERSION_MISMATCH;
135
136	/*
137	* Register the EMT R0 logger instance.
138	*/
139	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0Logger;
140	if (pR0Logger)
141	{
142	#if 0 /* testing of the logger. */
143	LogCom(("VMMR0Init: before %p\n", RTLogDefaultInstance()));
144	LogCom(("VMMR0Init: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
145	LogCom(("VMMR0Init: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
146	LogCom(("VMMR0Init: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
147
148	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
149	LogCom(("VMMR0Init: after %p reg\n", RTLogDefaultInstance()));
150	RTLogSetDefaultInstanceThread(NULL, 0);
151	LogCom(("VMMR0Init: after %p dereg\n", RTLogDefaultInstance()));
152
153	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
154	LogCom(("VMMR0Init: returned succesfully from direct logger call.\n"));
155	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
156	LogCom(("VMMR0Init: returned succesfully from direct flush call.\n"));
157
158	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
159	LogCom(("VMMR0Init: after %p reg2\n", RTLogDefaultInstance()));
160	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
161	LogCom(("VMMR0Init: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
162	RTLogSetDefaultInstanceThread(NULL, 0);
163	LogCom(("VMMR0Init: after %p dereg2\n", RTLogDefaultInstance()));
164
165	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
166	LogCom(("VMMR0Init: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
167	#endif
168	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
169	}
170
171
172	/*
173	* Init VMXM.
174	*/
175	HWACCMR0Init(pVM);
176
177	/*
178	* Init CPUM.
179	*/
180	int rc = CPUMR0Init(pVM);
181
182	if (RT_FAILURE(rc))
183	RTLogSetDefaultInstanceThread(NULL, 0);
184	return rc;
185	}
186
187
188	/**
189	* Terminates the R0 driver for a particular VM instance.
190	*
191	* @returns VBox status code.
192	*
193	* @param pVM The VM instance in question.
194	*/
195	static int VMMR0Term(PVM pVM)
196	{
197	/*
198	* Deregister the logger.
199	*/
200	RTLogSetDefaultInstanceThread(NULL, 0);
201	return VINF_SUCCESS;
202	}
203
204
205	/**
206	* Calls the ring-3 host code.
207	*
208	* @returns VBox status code of the ring-3 call.
209	* @param pVM The VM handle.
210	* @param enmOperation The operation.
211	* @param uArg The argument to the operation.
212	*/
213	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
214	{
215	/** @todo profile this! */
216	pVM->vmm.s.enmCallHostOperation = enmOperation;
217	pVM->vmm.s.u64CallHostArg = uArg;
218	pVM->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
219	int rc = vmmR0CallHostLongJmp(&pVM->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
220	if (rc == VINF_SUCCESS)
221	rc = pVM->vmm.s.rcCallHost;
222	return rc;
223	}
224
225
226	#ifdef VBOX_WITH_STATISTICS
227	/**
228	* Record return code statistics
229	* @param pVM The VM handle.
230	* @param rc The status code.
231	*/
232	static void vmmR0RecordRC(PVM pVM, int rc)
233	{
234	/*
235	* Collect statistics.
236	*/
237	switch (rc)
238	{
239	case VINF_SUCCESS:
240	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetNormal);
241	break;
242	case VINF_EM_RAW_INTERRUPT:
243	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterrupt);
244	break;
245	case VINF_EM_RAW_INTERRUPT_HYPER:
246	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptHyper);
247	break;
248	case VINF_EM_RAW_GUEST_TRAP:
249	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGuestTrap);
250	break;
251	case VINF_EM_RAW_RING_SWITCH:
252	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitch);
253	break;
254	case VINF_EM_RAW_RING_SWITCH_INT:
255	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitchInt);
256	break;
257	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
258	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetExceptionPrivilege);
259	break;
260	case VINF_EM_RAW_STALE_SELECTOR:
261	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetStaleSelector);
262	break;
263	case VINF_EM_RAW_IRET_TRAP:
264	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIRETTrap);
265	break;
266	case VINF_IOM_HC_IOPORT_READ:
267	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIORead);
268	break;
269	case VINF_IOM_HC_IOPORT_WRITE:
270	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIOWrite);
271	break;
272	case VINF_IOM_HC_IOPORT_READWRITE:
273	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIOReadWrite);
274	break;
275	case VINF_IOM_HC_MMIO_READ:
276	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIORead);
277	break;
278	case VINF_IOM_HC_MMIO_WRITE:
279	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOWrite);
280	break;
281	case VINF_IOM_HC_MMIO_READ_WRITE:
282	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOReadWrite);
283	break;
284	case VINF_PATM_HC_MMIO_PATCH_READ:
285	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchRead);
286	break;
287	case VINF_PATM_HC_MMIO_PATCH_WRITE:
288	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchWrite);
289	break;
290	case VINF_EM_RAW_EMULATE_INSTR:
291	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulate);
292	break;
293	case VINF_PATCH_EMULATE_INSTR:
294	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchEmulate);
295	break;
296	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
297	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLDTFault);
298	break;
299	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
300	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGDTFault);
301	break;
302	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
303	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIDTFault);
304	break;
305	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
306	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTSSFault);
307	break;
308	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
309	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDFault);
310	break;
311	case VINF_CSAM_PENDING_ACTION:
312	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCSAMTask);
313	break;
314	case VINF_PGM_SYNC_CR3:
315	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetSyncCR3);
316	break;
317	case VINF_PATM_PATCH_INT3:
318	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchInt3);
319	break;
320	case VINF_PATM_PATCH_TRAP_PF:
321	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchPF);
322	break;
323	case VINF_PATM_PATCH_TRAP_GP:
324	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchGP);
325	break;
326	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
327	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPageOverflow);
328	break;
329	case VINF_EM_RESCHEDULE_REM:
330	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRescheduleREM);
331	break;
332	case VINF_EM_RAW_TO_R3:
333	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetToR3);
334	break;
335	case VINF_EM_RAW_TIMER_PENDING:
336	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTimerPending);
337	break;
338	case VINF_EM_RAW_INTERRUPT_PENDING:
339	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptPending);
340	break;
341	case VINF_VMM_CALL_HOST:
342	switch (pVM->vmm.s.enmCallHostOperation)
343	{
344	case VMMCALLHOST_PDM_LOCK:
345	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMLock);
346	break;
347	case VMMCALLHOST_PDM_QUEUE_FLUSH:
348	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMQueueFlush);
349	break;
350	case VMMCALLHOST_PGM_POOL_GROW:
351	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMPoolGrow);
352	break;
353	case VMMCALLHOST_PGM_LOCK:
354	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMLock);
355	break;
356	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
357	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRemReplay);
358	break;
359	case VMMCALLHOST_PGM_RAM_GROW_RANGE:
360	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMGrowRAM);
361	break;
362	case VMMCALLHOST_VMM_LOGGER_FLUSH:
363	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLogFlush);
364	break;
365	case VMMCALLHOST_VM_SET_ERROR:
366	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetVMSetError);
367	break;
368	default:
369	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCallHost);
370	break;
371	}
372	break;
373	case VINF_PATM_DUPLICATE_FUNCTION:
374	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPATMDuplicateFn);
375	break;
376	case VINF_PGM_CHANGE_MODE:
377	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMChangeMode);
378	break;
379	case VINF_EM_RAW_EMULATE_INSTR_HLT:
380	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulHlt);
381	break;
382	case VINF_EM_PENDING_REQUEST:
383	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPendingRequest);
384	break;
385	default:
386	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMisc);
387	break;
388	}
389	}
390	#endif /* VBOX_WITH_STATISTICS */
391
392
393	/**
394	* The Ring 0 entry point, called by the support library (SUP).
395	*
396	* @returns VBox status code.
397	* @param pVM The VM to operate on.
398	* @param uOperation Which operation to execute. (VMMR0OPERATION)
399	* @param pvArg Argument to the operation.
400	*/
401	VMMR0DECL(int) VMMR0Entry(PVM pVM, unsigned /* make me an enum / uOperation, void pvArg)
402	{
403	switch (uOperation)
404	{
405	/*
406	* Switch to GC.
407	* These calls return whatever the GC returns.
408	*/
409	case VMMR0_DO_RUN_GC:
410	{
411	/* Safety precaution as VMX disables the switcher. */
412	Assert(!pVM->vmm.s.fSwitcherDisabled);
413	if (pVM->vmm.s.fSwitcherDisabled)
414	return VERR_NOT_SUPPORTED;
415
416	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
417	register int rc;
418	TMCpuTickResume(pVM);
419	pVM->vmm.s.iLastGCRc = rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
420	TMCpuTickPause(pVM);
421
422	#ifdef VBOX_WITH_STATISTICS
423	vmmR0RecordRC(pVM, rc);
424	#endif
425
426	/*
427	* Check if there is an exit R0 action associated with the return code.
428	*/
429	switch (rc)
430	{
431	/*
432	* Default - no action, just return.
433	*/
434	default:
435	return rc;
436
437	/*
438	* We'll let TRPM change the stack frame so our return is different.
439	* Just keep in mind that after the call, things have changed!
440	*/
441	case VINF_EM_RAW_INTERRUPT:
442	case VINF_EM_RAW_INTERRUPT_HYPER:
443	TRPMR0SetupInterruptDispatcherFrame(pVM, (char*)&pVM - sizeof(pVM));
444	return rc;
445	}
446	/* Won't get here! */
447	break;
448	}
449
450	/*
451	* Run guest code using the available hardware acceleration technology.
452	*/
453	case VMMR0_HWACC_RUN_GUEST:
454	{
455	int rc;
456
457	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
458	TMCpuTickResume(pVM);
459	rc = HWACCMR0Enable(pVM);
460	if (VBOX_SUCCESS(rc))
461	{
462	#ifdef DEBUG_NO_RING0_ASSERTIONS
463	g_pVMAssert = pVM;
464	#endif
465	rc = vmmR0CallHostSetJmp(&pVM->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM); /* this may resume code. */
466	#ifdef DEBUG_NO_RING0_ASSERTIONS
467	g_pVMAssert = 0;
468	#endif
469	int rc2 = HWACCMR0Disable(pVM);
470	AssertRC(rc2);
471	}
472	TMCpuTickPause(pVM);
473	pVM->vmm.s.iLastGCRc = rc;
474
475	#ifdef VBOX_WITH_STATISTICS
476	vmmR0RecordRC(pVM, rc);
477	#endif
478	/* No special action required for external interrupts, just return. */
479	return rc;
480	}
481
482	/*
483	* Initialize the R0 part of a VM instance.
484	*/
485	case VMMR0_DO_VMMR0_INIT:
486	return VMMR0Init(pVM, (unsigned)(uintptr_t)pvArg);
487
488	/*
489	* Terminate the R0 part of a VM instance.
490	*/
491	case VMMR0_DO_VMMR0_TERM:
492	return VMMR0Term(pVM);
493
494	/*
495	* Setup the hardware accelerated raw-mode session.
496	*/
497	case VMMR0_HWACC_SETUP_VM:
498	return HWACCMR0SetupVMX(pVM);
499
500	/*
501	* Switch to GC to execute Hypervisor function.
502	*/
503	case VMMR0_DO_CALL_HYPERVISOR:
504	{
505	/* Safety precaution as VMX disables the switcher. */
506	Assert(!pVM->vmm.s.fSwitcherDisabled);
507	if (pVM->vmm.s.fSwitcherDisabled)
508	return VERR_NOT_SUPPORTED;
509
510	int rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
511	return rc;
512	}
513
514	#if !defined(__L4__) && !defined(__AMD64__) /** @todo Port this to L4. / /* @todo fix logging and other services problems on AMD64. */
515	/*
516	* Services.
517	*/
518	case VMMR0_DO_INTNET_OPEN:
519	case VMMR0_DO_INTNET_IF_CLOSE:
520	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
521	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
522	case VMMR0_DO_INTNET_IF_SEND:
523	case VMMR0_DO_INTNET_IF_WAIT:
524	{
525	/*
526	* Validate arguments a bit first.
527	*/
528	if (!VALID_PTR(pvArg))
529	return VERR_INVALID_POINTER;
530	if (!VALID_PTR(pVM))
531	return VERR_INVALID_POINTER;
532	if (pVM->pVMHC != pVM)
533	return VERR_INVALID_POINTER;
534	if (!VALID_PTR(pVM->pSession))
535	return VERR_INVALID_POINTER;
536	if (!g_pIntNet)
537	return VERR_FILE_NOT_FOUND; ///@todo fix this status code!
538
539	/*
540	* Unpack the arguments and call the service.
541	*/
542	switch (uOperation)
543	{
544	case VMMR0_DO_INTNET_OPEN:
545	{
546	PINTNETOPENARGS pArgs = (PINTNETOPENARGS)pvArg;
547	return INTNETR0Open(g_pIntNet, pVM->pSession, &pArgs->szNetwork[0], pArgs->cbSend, pArgs->cbRecv, &pArgs->hIf);
548	}
549
550	case VMMR0_DO_INTNET_IF_CLOSE:
551	{
552	PINTNETIFCLOSEARGS pArgs = (PINTNETIFCLOSEARGS)pvArg;
553	return INTNETR0IfClose(g_pIntNet, pArgs->hIf);
554	}
555
556	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
557	{
558	PINTNETIFGETRING3BUFFERARGS pArgs = (PINTNETIFGETRING3BUFFERARGS)pvArg;
559	return INTNETR0IfGetRing3Buffer(g_pIntNet, pArgs->hIf, &pArgs->pRing3Buf);
560	}
561
562	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
563	{
564	PINTNETIFSETPROMISCUOUSMODEARGS pArgs = (PINTNETIFSETPROMISCUOUSMODEARGS)pvArg;
565	return INTNETR0IfSetPromiscuousMode(g_pIntNet, pArgs->hIf, pArgs->fPromiscuous);
566	}
567
568	case VMMR0_DO_INTNET_IF_SEND:
569	{
570	PINTNETIFSENDARGS pArgs = (PINTNETIFSENDARGS)pvArg;
571	return INTNETR0IfSend(g_pIntNet, pArgs->hIf, pArgs->pvFrame, pArgs->cbFrame);
572	}
573
574	case VMMR0_DO_INTNET_IF_WAIT:
575	{
576	PINTNETIFWAITARGS pArgs = (PINTNETIFWAITARGS)pvArg;
577	return INTNETR0IfWait(g_pIntNet, pArgs->hIf, pArgs->cMillies);
578	}
579
580	default:
581	return VERR_NOT_SUPPORTED;
582	}
583	}
584	#endif /* !__L4__ */
585
586	#ifdef DEBUG
587	/*
588	* For testing purposes only.
589	*/
590	case 0xdeadbeef:
591	{
592	LogCom(("VMMR0Entry: !debug testing! 0xdeadbeef!\n"));
593	#if 0
594	void *pv;
595	void *pvPhys;
596
597	/* alloc cont memory */
598	int rc = SUPR0ContAlloc(pVM->pSession, 0x1fff, &pv, &pvPhys);
599	LogCom(("VMMR0Entry: ContAlloc: rc=%d pv=%p pvPhys=%p\n", rc, pv, pvPhys));
600	if (!VBOX_SUCCESS(rc))
601	return rc;
602	/* touch */
603	((char)pv)[0x1000] = ((char)pv)[0] = 'f';
604	/* free */
605	rc = SUPR0ContFree(pVM->pSession, pv);
606	LogCom(("VMMR0Entry: ContFree: rc=%d\n", rc));
607	if (!VBOX_SUCCESS(rc))
608	return rc;
609	#endif
610	/* successful return - consistent with release builds. */
611	return VERR_NOT_SUPPORTED;
612	}
613	#endif
614
615	default:
616	/*
617	* We're returning VERR_NOT_SUPPORT here so we've got something else
618	* than -1 which the interrupt gate glue code might return.
619	*/
620	Log(("operation %#x is not supported\n", uOperation));
621	return VERR_NOT_SUPPORTED;
622	}
623	}
624
625
626	/**
627	* Internal R0 logger worker: Flush logger.
628	*
629	* @param pLogger The logger instance to flush.
630	* @remark This function must be exported!
631	*/
632	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
633	{
634	/*
635	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
636	* (This is a bit paranoid code.)
637	*/
638	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
639	if ( !VALID_PTR(pR0Logger)
640	\|\| !VALID_PTR(pR0Logger + 1)
641	\|\| !VALID_PTR(pLogger)
642	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
643	{
644	LogCom(("vmmR0LoggerFlush: pLogger=%p!\n", pLogger));
645	return;
646	}
647
648	PVM pVM = pR0Logger->pVM;
649	if ( !VALID_PTR(pVM)
650	\|\| pVM->pVMHC != pVM)
651	{
652	LogCom(("vmmR0LoggerFlush: pVM=%p! pLogger=%p\n", pVM, pLogger));
653	return;
654	}
655
656	/*
657	* Check that the jump buffer is armed.
658	*/
659	if (!pVM->vmm.s.CallHostR0JmpBuf.eip)
660	{
661	LogCom(("vmmR0LoggerFlush: Jump buffer isn't armed!\n"));
662	pLogger->offScratch = 0;
663	return;
664	}
665
666	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
667	}
668
669	#ifdef DEBUG_NO_RING0_ASSERTIONS
670	/**
671	* Check if we really want to hit a breakpoint.
672	* Can jump back to ring-3 when the longjmp is armed.
673	*/
674	DECLEXPORT(bool) RTCALL RTAssertDoBreakpoint()
675	{
676	if (g_pVMAssert)
677	{
678	g_pVMAssert->vmm.s.enmCallHostOperation = VMMCALLHOST_VMM_LOGGER_FLUSH;
679	g_pVMAssert->vmm.s.uCallHostArg = 0;
680	g_pVMAssert->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
681	int rc = vmmR0CallHostLongJmp(&g_pVMAssert->vmm.s.CallHostR0JmpBuf, VERR_INTERNAL_ERROR);
682	if (rc == VINF_SUCCESS)
683	rc = g_pVMAssert->vmm.s.rcCallHost;
684	}
685
686	return true;
687	}
688
689
690	#undef LOG_GROUP
691	#define LOG_GROUP LOG_GROUP_EM
692
693	/** Runtime assert implementation for Native Win32 Ring-0. */
694	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
695	{
696	Log(("\n!!Assertion Failed!!\n"
697	"Expression: %s\n"
698	"Location : %s(%d) %s\n",
699	pszExpr, pszFile, uLine, pszFunction));
700	}
701
702	#endif

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 1

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