VMMR0.cpp@ 1995

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1	/* $Id: VMMR0.cpp 1793 2007-03-29 11:50:26Z vboxsync $ */
2	/** @file
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) - this has been fixed now. please remove. */
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	#include <iprt/stdarg.h>
46
47	#if defined(_MSC_VER) && defined(__AMD64__) /** @todo check this with with VC7! */
48	# pragma intrinsic(_AddressOfReturnAddress)
49	#endif
50
51
52	/*******************************************************************************
53	* Internal Functions *
54	*******************************************************************************/
55	static int VMMR0Init(PVM pVM, unsigned uVersion);
56	static int VMMR0Term(PVM pVM);
57	__BEGIN_DECLS
58	VMMR0DECL(int) ModuleInit(void);
59	VMMR0DECL(void) ModuleTerm(void);
60	__END_DECLS
61
62
63	//#define DEBUG_NO_RING0_ASSERTIONS
64	#ifdef DEBUG_NO_RING0_ASSERTIONS
65	static PVM g_pVMAssert = 0;
66	#endif
67
68	/*******************************************************************************
69	* Global Variables *
70	*******************************************************************************/
71	#ifdef VBOX_WITH_INTERNAL_NETWORKING
72	/** Pointer to the internal networking service instance. */
73	PINTNET g_pIntNet = 0;
74	#endif
75
76
77	/**
78	* Initialize the module.
79	* This is called when we're first loaded.
80	*
81	* @returns 0 on success.
82	* @returns VBox status on failure.
83	*/
84	VMMR0DECL(int) ModuleInit(void)
85	{
86	#ifdef VBOX_WITH_INTERNAL_NETWORKING
87	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
88	g_pIntNet = NULL;
89	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
90	int rc = INTNETR0Create(&g_pIntNet);
91	if (VBOX_SUCCESS(rc))
92	{
93	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
94	return 0;
95	}
96	g_pIntNet = NULL;
97	LogFlow(("ModuleTerm: returns %Vrc\n", rc));
98	return rc;
99	#else
100	return 0;
101	#endif
102	}
103
104
105	/**
106	* Terminate the module.
107	* This is called when we're finally unloaded.
108	*/
109	VMMR0DECL(void) ModuleTerm(void)
110	{
111	#ifdef VBOX_WITH_INTERNAL_NETWORKING
112	LogFlow(("ModuleTerm:\n"));
113	if (g_pIntNet)
114	{
115	INTNETR0Destroy(g_pIntNet);
116	g_pIntNet = NULL;
117	}
118	LogFlow(("ModuleTerm: returns\n"));
119	#endif
120	}
121
122
123	/**
124	* Initaties the R0 driver for a particular VM instance.
125	*
126	* @returns VBox status code.
127	*
128	* @param pVM The VM instance in question.
129	* @param uVersion The minimum module version required.
130	*/
131	static int VMMR0Init(PVM pVM, unsigned uVersion)
132	{
133	/*
134	* Check if compatible version.
135	*/
136	if ( uVersion != VBOX_VERSION
137	&& ( VBOX_GET_VERSION_MAJOR(uVersion) != VBOX_VERSION_MAJOR
138	\|\| VBOX_GET_VERSION_MINOR(uVersion) < VBOX_VERSION_MINOR))
139	return VERR_VERSION_MISMATCH;
140	if ( !VALID_PTR(pVM)
141	\|\| pVM->pVMR0 != pVM)
142	return VERR_INVALID_PARAMETER;
143
144	/*
145	* Register the EMT R0 logger instance.
146	*/
147	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0Logger;
148	if (pR0Logger)
149	{
150	#if 0 /* testing of the logger. */
151	LogCom(("VMMR0Init: before %p\n", RTLogDefaultInstance()));
152	LogCom(("VMMR0Init: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
153	LogCom(("VMMR0Init: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
154	LogCom(("VMMR0Init: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
155
156	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
157	LogCom(("VMMR0Init: after %p reg\n", RTLogDefaultInstance()));
158	RTLogSetDefaultInstanceThread(NULL, 0);
159	LogCom(("VMMR0Init: after %p dereg\n", RTLogDefaultInstance()));
160
161	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
162	LogCom(("VMMR0Init: returned succesfully from direct logger call.\n"));
163	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
164	LogCom(("VMMR0Init: returned succesfully from direct flush call.\n"));
165
166	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
167	LogCom(("VMMR0Init: after %p reg2\n", RTLogDefaultInstance()));
168	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
169	LogCom(("VMMR0Init: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
170	RTLogSetDefaultInstanceThread(NULL, 0);
171	LogCom(("VMMR0Init: after %p dereg2\n", RTLogDefaultInstance()));
172
173	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
174	LogCom(("VMMR0Init: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
175	#endif
176	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
177	}
178
179
180	/*
181	* Init VMXM.
182	*/
183	HWACCMR0Init(pVM);
184
185	/*
186	* Init CPUM.
187	*/
188	int rc = CPUMR0Init(pVM);
189
190	if (RT_FAILURE(rc))
191	RTLogSetDefaultInstanceThread(NULL, 0);
192	return rc;
193	}
194
195
196	/**
197	* Terminates the R0 driver for a particular VM instance.
198	*
199	* @returns VBox status code.
200	*
201	* @param pVM The VM instance in question.
202	*/
203	static int VMMR0Term(PVM pVM)
204	{
205	/*
206	* Deregister the logger.
207	*/
208	RTLogSetDefaultInstanceThread(NULL, 0);
209	return VINF_SUCCESS;
210	}
211
212
213	/**
214	* Calls the ring-3 host code.
215	*
216	* @returns VBox status code of the ring-3 call.
217	* @param pVM The VM handle.
218	* @param enmOperation The operation.
219	* @param uArg The argument to the operation.
220	*/
221	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
222	{
223	/** @todo profile this! */
224	pVM->vmm.s.enmCallHostOperation = enmOperation;
225	pVM->vmm.s.u64CallHostArg = uArg;
226	pVM->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
227	int rc = vmmR0CallHostLongJmp(&pVM->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
228	if (rc == VINF_SUCCESS)
229	rc = pVM->vmm.s.rcCallHost;
230	return rc;
231	}
232
233
234	#ifdef VBOX_WITH_STATISTICS
235	/**
236	* Record return code statistics
237	* @param pVM The VM handle.
238	* @param rc The status code.
239	*/
240	static void vmmR0RecordRC(PVM pVM, int rc)
241	{
242	/*
243	* Collect statistics.
244	*/
245	switch (rc)
246	{
247	case VINF_SUCCESS:
248	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetNormal);
249	break;
250	case VINF_EM_RAW_INTERRUPT:
251	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterrupt);
252	break;
253	case VINF_EM_RAW_INTERRUPT_HYPER:
254	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptHyper);
255	break;
256	case VINF_EM_RAW_GUEST_TRAP:
257	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGuestTrap);
258	break;
259	case VINF_EM_RAW_RING_SWITCH:
260	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitch);
261	break;
262	case VINF_EM_RAW_RING_SWITCH_INT:
263	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitchInt);
264	break;
265	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
266	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetExceptionPrivilege);
267	break;
268	case VINF_EM_RAW_STALE_SELECTOR:
269	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetStaleSelector);
270	break;
271	case VINF_EM_RAW_IRET_TRAP:
272	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIRETTrap);
273	break;
274	case VINF_IOM_HC_IOPORT_READ:
275	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIORead);
276	break;
277	case VINF_IOM_HC_IOPORT_WRITE:
278	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIOWrite);
279	break;
280	case VINF_IOM_HC_IOPORT_READWRITE:
281	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIOReadWrite);
282	break;
283	case VINF_IOM_HC_MMIO_READ:
284	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIORead);
285	break;
286	case VINF_IOM_HC_MMIO_WRITE:
287	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOWrite);
288	break;
289	case VINF_IOM_HC_MMIO_READ_WRITE:
290	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOReadWrite);
291	break;
292	case VINF_PATM_HC_MMIO_PATCH_READ:
293	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchRead);
294	break;
295	case VINF_PATM_HC_MMIO_PATCH_WRITE:
296	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchWrite);
297	break;
298	case VINF_EM_RAW_EMULATE_INSTR:
299	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulate);
300	break;
301	case VINF_PATCH_EMULATE_INSTR:
302	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchEmulate);
303	break;
304	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
305	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLDTFault);
306	break;
307	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
308	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGDTFault);
309	break;
310	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
311	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIDTFault);
312	break;
313	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
314	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTSSFault);
315	break;
316	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
317	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDFault);
318	break;
319	case VINF_CSAM_PENDING_ACTION:
320	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCSAMTask);
321	break;
322	case VINF_PGM_SYNC_CR3:
323	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetSyncCR3);
324	break;
325	case VINF_PATM_PATCH_INT3:
326	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchInt3);
327	break;
328	case VINF_PATM_PATCH_TRAP_PF:
329	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchPF);
330	break;
331	case VINF_PATM_PATCH_TRAP_GP:
332	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchGP);
333	break;
334	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
335	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchIretIRQ);
336	break;
337	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
338	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPageOverflow);
339	break;
340	case VINF_EM_RESCHEDULE_REM:
341	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRescheduleREM);
342	break;
343	case VINF_EM_RAW_TO_R3:
344	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetToR3);
345	break;
346	case VINF_EM_RAW_TIMER_PENDING:
347	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTimerPending);
348	break;
349	case VINF_EM_RAW_INTERRUPT_PENDING:
350	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptPending);
351	break;
352	case VINF_VMM_CALL_HOST:
353	switch (pVM->vmm.s.enmCallHostOperation)
354	{
355	case VMMCALLHOST_PDM_LOCK:
356	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMLock);
357	break;
358	case VMMCALLHOST_PDM_QUEUE_FLUSH:
359	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMQueueFlush);
360	break;
361	case VMMCALLHOST_PGM_POOL_GROW:
362	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMPoolGrow);
363	break;
364	case VMMCALLHOST_PGM_LOCK:
365	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMLock);
366	break;
367	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
368	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRemReplay);
369	break;
370	case VMMCALLHOST_PGM_RAM_GROW_RANGE:
371	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMGrowRAM);
372	break;
373	case VMMCALLHOST_VMM_LOGGER_FLUSH:
374	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLogFlush);
375	break;
376	case VMMCALLHOST_VM_SET_ERROR:
377	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetVMSetError);
378	break;
379	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
380	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetVMSetRuntimeError);
381	break;
382	default:
383	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCallHost);
384	break;
385	}
386	break;
387	case VINF_PATM_DUPLICATE_FUNCTION:
388	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPATMDuplicateFn);
389	break;
390	case VINF_PGM_CHANGE_MODE:
391	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMChangeMode);
392	break;
393	case VINF_EM_RAW_EMULATE_INSTR_HLT:
394	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulHlt);
395	break;
396	case VINF_EM_PENDING_REQUEST:
397	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPendingRequest);
398	break;
399	default:
400	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMisc);
401	break;
402	}
403	}
404	#endif /* VBOX_WITH_STATISTICS */
405
406
407	/**
408	* The Ring 0 entry point, called by the support library (SUP).
409	*
410	* @returns VBox status code.
411	* @param pVM The VM to operate on.
412	* @param uOperation Which operation to execute. (VMMR0OPERATION)
413	* @param pvArg Argument to the operation.
414	*/
415	VMMR0DECL(int) VMMR0Entry(PVM pVM, unsigned /* make me an enum / uOperation, void pvArg)
416	{
417	switch (uOperation)
418	{
419	/*
420	* Switch to GC.
421	* These calls return whatever the GC returns.
422	*/
423	case VMMR0_DO_RAW_RUN:
424	{
425	/* Safety precaution as VMX disables the switcher. */
426	Assert(!pVM->vmm.s.fSwitcherDisabled);
427	if (pVM->vmm.s.fSwitcherDisabled)
428	return VERR_NOT_SUPPORTED;
429
430	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
431	register int rc;
432	pVM->vmm.s.iLastGCRc = rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
433
434	#ifdef VBOX_WITH_STATISTICS
435	vmmR0RecordRC(pVM, rc);
436	#endif
437
438	/*
439	* Check if there is an exit R0 action associated with the return code.
440	*/
441	switch (rc)
442	{
443	/*
444	* Default - no action, just return.
445	*/
446	default:
447	return rc;
448
449	/*
450	* We'll let TRPM change the stack frame so our return is different.
451	* Just keep in mind that after the call, things have changed!
452	*/
453	case VINF_EM_RAW_INTERRUPT:
454	case VINF_EM_RAW_INTERRUPT_HYPER:
455	{
456	#ifdef VBOX_WITHOUT_IDT_PATCHING
457	TRPMR0DispatchHostInterrupt(pVM);
458	#else /* !VBOX_WITHOUT_IDT_PATCHING */
459	/*
460	* Don't trust the compiler to get this right.
461	* gcc -fomit-frame-pointer screws up big time here. This works fine in 64-bit
462	* mode too because we push the arguments on the stack in the IDT patch code.
463	*/
464	# if defined(__GNUC__)
465	void pvRet = (uint8_t )__builtin_frame_address(0) + sizeof(void *);
466	# elif defined(_MSC_VER) && defined(__AMD64__) /** @todo check this with with VC7! */
467	void pvRet = (uint8_t )_AddressOfReturnAddress();
468	# elif defined(__X86__)
469	void pvRet = (uint8_t )&pVM - sizeof(pVM);
470	# else
471	# error "huh?"
472	# endif
473	if ( ((uintptr_t *)pvRet)[1] == (uintptr_t)pVM
474	&& ((uintptr_t *)pvRet)[2] == (uintptr_t)uOperation
475	&& ((uintptr_t *)pvRet)[3] == (uintptr_t)pvArg)
476	TRPMR0SetupInterruptDispatcherFrame(pVM, pvRet);
477	else
478	{
479	# if defined(DEBUG) \|\| defined(LOG_ENABLED)
480	static bool s_fHaveWarned = false;
481	if (!s_fHaveWarned)
482	{
483	s_fHaveWarned = true;
484	//RTLogPrintf("VMMR0.r0: The compiler can't find the stack frame!\n"); -- @todo export me!
485	RTLogComPrintf("VMMR0.r0: The compiler can't find the stack frame!\n");
486	}
487	# endif
488	TRPMR0DispatchHostInterrupt(pVM);
489	}
490	#endif /* !VBOX_WITHOUT_IDT_PATCHING */
491	return rc;
492	}
493	}
494	/* Won't get here! */
495	break;
496	}
497
498	/*
499	* Run guest code using the available hardware acceleration technology.
500	*/
501	case VMMR0_DO_HWACC_RUN:
502	{
503	int rc;
504
505	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
506	rc = HWACCMR0Enable(pVM);
507	if (VBOX_SUCCESS(rc))
508	{
509	#ifdef DEBUG_NO_RING0_ASSERTIONS
510	g_pVMAssert = pVM;
511	#endif
512	rc = vmmR0CallHostSetJmp(&pVM->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM); /* this may resume code. */
513	#ifdef DEBUG_NO_RING0_ASSERTIONS
514	g_pVMAssert = 0;
515	#endif
516	int rc2 = HWACCMR0Disable(pVM);
517	AssertRC(rc2);
518	}
519	pVM->vmm.s.iLastGCRc = rc;
520
521	#ifdef VBOX_WITH_STATISTICS
522	vmmR0RecordRC(pVM, rc);
523	#endif
524	/* No special action required for external interrupts, just return. */
525	return rc;
526	}
527
528	/*
529	* Initialize the R0 part of a VM instance.
530	*/
531	case VMMR0_DO_VMMR0_INIT:
532	{
533	RTCCUINTREG fFlags = ASMIntDisableFlags();
534	int rc = VMMR0Init(pVM, (unsigned)(uintptr_t)pvArg);
535	ASMSetFlags(fFlags);
536	return rc;
537	}
538
539	/*
540	* Terminate the R0 part of a VM instance.
541	*/
542	case VMMR0_DO_VMMR0_TERM:
543	{
544	RTCCUINTREG fFlags = ASMIntDisableFlags();
545	int rc = VMMR0Term(pVM);
546	ASMSetFlags(fFlags);
547	return rc;
548	}
549
550	/*
551	* Setup the hardware accelerated raw-mode session.
552	*/
553	case VMMR0_DO_HWACC_SETUP_VM:
554	{
555	RTCCUINTREG fFlags = ASMIntDisableFlags();
556	int rc = HWACCMR0SetupVMX(pVM);
557	ASMSetFlags(fFlags);
558	return rc;
559	}
560
561	/*
562	* Switch to GC to execute Hypervisor function.
563	*/
564	case VMMR0_DO_CALL_HYPERVISOR:
565	{
566	/* Safety precaution as VMX disables the switcher. */
567	Assert(!pVM->vmm.s.fSwitcherDisabled);
568	if (pVM->vmm.s.fSwitcherDisabled)
569	return VERR_NOT_SUPPORTED;
570
571	RTCCUINTREG fFlags = ASMIntDisableFlags();
572	int rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
573	ASMSetFlags(fFlags);
574	return rc;
575	}
576
577	#ifdef VBOX_WITH_INTERNAL_NETWORKING
578	/*
579	* Services.
580	*/
581	case VMMR0_DO_INTNET_OPEN:
582	case VMMR0_DO_INTNET_IF_CLOSE:
583	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
584	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
585	case VMMR0_DO_INTNET_IF_SEND:
586	case VMMR0_DO_INTNET_IF_WAIT:
587	{
588	/*
589	* Validate arguments a bit first.
590	*/
591	if (!VALID_PTR(pvArg))
592	return VERR_INVALID_POINTER;
593	if (!VALID_PTR(pVM))
594	return VERR_INVALID_POINTER;
595	if (pVM->pVMR0 != pVM)
596	return VERR_INVALID_POINTER;
597	if (!VALID_PTR(pVM->pSession))
598	return VERR_INVALID_POINTER;
599	if (!g_pIntNet)
600	return VERR_FILE_NOT_FOUND; ///@todo fix this status code!
601
602	/*
603	* Unpack the arguments and call the service.
604	*/
605	switch (uOperation)
606	{
607	case VMMR0_DO_INTNET_OPEN:
608	{
609	PINTNETOPENARGS pArgs = (PINTNETOPENARGS)pvArg;
610	return INTNETR0Open(g_pIntNet, pVM->pSession, &pArgs->szNetwork[0], pArgs->cbSend, pArgs->cbRecv, pArgs->fRestrictAccess, &pArgs->hIf);
611	}
612
613	case VMMR0_DO_INTNET_IF_CLOSE:
614	{
615	PINTNETIFCLOSEARGS pArgs = (PINTNETIFCLOSEARGS)pvArg;
616	return INTNETR0IfClose(g_pIntNet, pArgs->hIf);
617	}
618
619	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
620	{
621	PINTNETIFGETRING3BUFFERARGS pArgs = (PINTNETIFGETRING3BUFFERARGS)pvArg;
622	return INTNETR0IfGetRing3Buffer(g_pIntNet, pArgs->hIf, &pArgs->pRing3Buf);
623	}
624
625	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
626	{
627	PINTNETIFSETPROMISCUOUSMODEARGS pArgs = (PINTNETIFSETPROMISCUOUSMODEARGS)pvArg;
628	return INTNETR0IfSetPromiscuousMode(g_pIntNet, pArgs->hIf, pArgs->fPromiscuous);
629	}
630
631	case VMMR0_DO_INTNET_IF_SEND:
632	{
633	PINTNETIFSENDARGS pArgs = (PINTNETIFSENDARGS)pvArg;
634	return INTNETR0IfSend(g_pIntNet, pArgs->hIf, pArgs->pvFrame, pArgs->cbFrame);
635	}
636
637	case VMMR0_DO_INTNET_IF_WAIT:
638	{
639	PINTNETIFWAITARGS pArgs = (PINTNETIFWAITARGS)pvArg;
640	return INTNETR0IfWait(g_pIntNet, pArgs->hIf, pArgs->cMillies);
641	}
642
643	default:
644	return VERR_NOT_SUPPORTED;
645	}
646	}
647	#endif /* VBOX_WITH_INTERNAL_NETWORKING */
648
649	/*
650	* For profiling.
651	*/
652	case VMMR0_DO_NOP:
653	return VINF_SUCCESS;
654
655	/*
656	* For testing Ring-0 APIs invoked in this environment.
657	*/
658	case VMMR0_DO_TESTS:
659	/** @todo make new test */
660	return VINF_SUCCESS;
661
662
663	default:
664	/*
665	* We're returning VERR_NOT_SUPPORT here so we've got something else
666	* than -1 which the interrupt gate glue code might return.
667	*/
668	Log(("operation %#x is not supported\n", uOperation));
669	return VERR_NOT_SUPPORTED;
670	}
671	}
672
673
674	/**
675	* Internal R0 logger worker: Flush logger.
676	*
677	* @param pLogger The logger instance to flush.
678	* @remark This function must be exported!
679	*/
680	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
681	{
682	/*
683	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
684	* (This is a bit paranoid code.)
685	*/
686	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
687	if ( !VALID_PTR(pR0Logger)
688	\|\| !VALID_PTR(pR0Logger + 1)
689	\|\| !VALID_PTR(pLogger)
690	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
691	{
692	LogCom(("vmmR0LoggerFlush: pLogger=%p!\n", pLogger));
693	return;
694	}
695
696	PVM pVM = pR0Logger->pVM;
697	if ( !VALID_PTR(pVM)
698	\|\| pVM->pVMHC != pVM)
699	{
700	LogCom(("vmmR0LoggerFlush: pVM=%p! pLogger=%p\n", pVM, pLogger));
701	return;
702	}
703
704	/*
705	* Check that the jump buffer is armed.
706	*/
707	#ifdef __X86__
708	if (!pVM->vmm.s.CallHostR0JmpBuf.eip)
709	#else
710	if (!pVM->vmm.s.CallHostR0JmpBuf.rip)
711	#endif
712	{
713	LogCom(("vmmR0LoggerFlush: Jump buffer isn't armed!\n"));
714	pLogger->offScratch = 0;
715	return;
716	}
717
718	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
719	}
720
721	void R0LogFlush()
722	{
723	vmmR0LoggerFlush(RTLogDefaultInstance());
724	}
725
726	#ifdef DEBUG_NO_RING0_ASSERTIONS
727	/**
728	* Check if we really want to hit a breakpoint.
729	* Can jump back to ring-3 when the longjmp is armed.
730	*/
731	DECLEXPORT(bool) RTCALL RTAssertDoBreakpoint()
732	{
733	if (g_pVMAssert)
734	{
735	g_pVMAssert->vmm.s.enmCallHostOperation = VMMCALLHOST_VMM_LOGGER_FLUSH;
736	g_pVMAssert->vmm.s.u64CallHostArg = 0;
737	g_pVMAssert->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
738	int rc = vmmR0CallHostLongJmp(&g_pVMAssert->vmm.s.CallHostR0JmpBuf, VERR_INTERNAL_ERROR);
739	if (rc == VINF_SUCCESS)
740	rc = g_pVMAssert->vmm.s.rcCallHost;
741	}
742
743	return true;
744	}
745
746
747	#undef LOG_GROUP
748	#define LOG_GROUP LOG_GROUP_EM
749
750	/** Runtime assert implementation for Native Win32 Ring-0. */
751	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
752	{
753	Log(("\n!!R0-Assertion Failed!!\n"
754	"Expression: %s\n"
755	"Location : %s(%d) %s\n",
756	pszExpr, pszFile, uLine, pszFunction));
757	}
758
759	/**
760	* Callback for RTLogFormatV which writes to the com port.
761	* See PFNLOGOUTPUT() for details.
762	*/
763	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
764	{
765	for (size_t i=0;i<cbChars;i++)
766	Log(("%c", pachChars[i]));
767
768	return cbChars;
769	}
770
771	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
772	{
773	PRTLOGGER pLog = RTLogDefaultInstance();
774	if (pLog)
775	{
776	va_list args;
777
778	va_start(args, pszFormat);
779	RTLogFormatV(rtLogOutput, pLog, pszFormat, args);
780	va_end(args);
781	R0LogFlush();
782	}
783	}
784
785	#endif

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 1995

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