VMMR0.cpp@ 2623

Last change on this file since 2623 was 2507, checked in by vboxsync, 18 years ago
Drop the VINF_IOM_HC_IOPORT_READWRITE status code as it isn't really used. Made VINF_EM_LAST inclusive as per last/end convention used elsewhere in the VM.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 25.4 KB

Line
1	/* $Id: VMMR0.cpp 2507 2007-05-04 18:23:45Z 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	#ifdef DEBUG
64	#define DEBUG_NO_RING0_ASSERTIONS
65	#ifdef DEBUG_NO_RING0_ASSERTIONS
66	static PVM g_pVMAssert = 0;
67	#endif
68	#endif
69
70	/*******************************************************************************
71	* Global Variables *
72	*******************************************************************************/
73	#ifdef VBOX_WITH_INTERNAL_NETWORKING
74	/** Pointer to the internal networking service instance. */
75	PINTNET g_pIntNet = 0;
76	#endif
77
78
79	/**
80	* Initialize the module.
81	* This is called when we're first loaded.
82	*
83	* @returns 0 on success.
84	* @returns VBox status on failure.
85	*/
86	VMMR0DECL(int) ModuleInit(void)
87	{
88	#ifdef VBOX_WITH_INTERNAL_NETWORKING
89	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
90	g_pIntNet = NULL;
91	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
92	int rc = INTNETR0Create(&g_pIntNet);
93	if (VBOX_SUCCESS(rc))
94	{
95	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
96	return 0;
97	}
98	g_pIntNet = NULL;
99	LogFlow(("ModuleTerm: returns %Vrc\n", rc));
100	return rc;
101	#else
102	return 0;
103	#endif
104	}
105
106
107	/**
108	* Terminate the module.
109	* This is called when we're finally unloaded.
110	*/
111	VMMR0DECL(void) ModuleTerm(void)
112	{
113	#ifdef VBOX_WITH_INTERNAL_NETWORKING
114	LogFlow(("ModuleTerm:\n"));
115	if (g_pIntNet)
116	{
117	INTNETR0Destroy(g_pIntNet);
118	g_pIntNet = NULL;
119	}
120	LogFlow(("ModuleTerm: returns\n"));
121	#endif
122	}
123
124
125	/**
126	* Initaties the R0 driver for a particular VM instance.
127	*
128	* @returns VBox status code.
129	*
130	* @param pVM The VM instance in question.
131	* @param uVersion The minimum module version required.
132	*/
133	static int VMMR0Init(PVM pVM, unsigned uVersion)
134	{
135	/*
136	* Check if compatible version.
137	*/
138	if ( uVersion != VBOX_VERSION
139	&& ( VBOX_GET_VERSION_MAJOR(uVersion) != VBOX_VERSION_MAJOR
140	\|\| VBOX_GET_VERSION_MINOR(uVersion) < VBOX_VERSION_MINOR))
141	return VERR_VERSION_MISMATCH;
142	if ( !VALID_PTR(pVM)
143	\|\| pVM->pVMR0 != pVM)
144	return VERR_INVALID_PARAMETER;
145
146	/*
147	* Register the EMT R0 logger instance.
148	*/
149	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0Logger;
150	if (pR0Logger)
151	{
152	#if 0 /* testing of the logger. */
153	LogCom(("VMMR0Init: before %p\n", RTLogDefaultInstance()));
154	LogCom(("VMMR0Init: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
155	LogCom(("VMMR0Init: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
156	LogCom(("VMMR0Init: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
157
158	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
159	LogCom(("VMMR0Init: after %p reg\n", RTLogDefaultInstance()));
160	RTLogSetDefaultInstanceThread(NULL, 0);
161	LogCom(("VMMR0Init: after %p dereg\n", RTLogDefaultInstance()));
162
163	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
164	LogCom(("VMMR0Init: returned succesfully from direct logger call.\n"));
165	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
166	LogCom(("VMMR0Init: returned succesfully from direct flush call.\n"));
167
168	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
169	LogCom(("VMMR0Init: after %p reg2\n", RTLogDefaultInstance()));
170	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
171	LogCom(("VMMR0Init: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
172	RTLogSetDefaultInstanceThread(NULL, 0);
173	LogCom(("VMMR0Init: after %p dereg2\n", RTLogDefaultInstance()));
174
175	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
176	LogCom(("VMMR0Init: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
177	#endif
178	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
179	}
180
181
182	/*
183	* Init VMXM.
184	*/
185	HWACCMR0Init(pVM);
186
187	/*
188	* Init CPUM.
189	*/
190	int rc = CPUMR0Init(pVM);
191
192	if (RT_FAILURE(rc))
193	RTLogSetDefaultInstanceThread(NULL, 0);
194	return rc;
195	}
196
197
198	/**
199	* Terminates the R0 driver for a particular VM instance.
200	*
201	* @returns VBox status code.
202	*
203	* @param pVM The VM instance in question.
204	*/
205	static int VMMR0Term(PVM pVM)
206	{
207	/*
208	* Deregister the logger.
209	*/
210	RTLogSetDefaultInstanceThread(NULL, 0);
211	return VINF_SUCCESS;
212	}
213
214
215	/**
216	* Calls the ring-3 host code.
217	*
218	* @returns VBox status code of the ring-3 call.
219	* @param pVM The VM handle.
220	* @param enmOperation The operation.
221	* @param uArg The argument to the operation.
222	*/
223	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
224	{
225	/** @todo profile this! */
226	pVM->vmm.s.enmCallHostOperation = enmOperation;
227	pVM->vmm.s.u64CallHostArg = uArg;
228	pVM->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
229	int rc = vmmR0CallHostLongJmp(&pVM->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
230	if (rc == VINF_SUCCESS)
231	rc = pVM->vmm.s.rcCallHost;
232	return rc;
233	}
234
235
236	#ifdef VBOX_WITH_STATISTICS
237	/**
238	* Record return code statistics
239	* @param pVM The VM handle.
240	* @param rc The status code.
241	*/
242	static void vmmR0RecordRC(PVM pVM, int rc)
243	{
244	/*
245	* Collect statistics.
246	*/
247	switch (rc)
248	{
249	case VINF_SUCCESS:
250	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetNormal);
251	break;
252	case VINF_EM_RAW_INTERRUPT:
253	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterrupt);
254	break;
255	case VINF_EM_RAW_INTERRUPT_HYPER:
256	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptHyper);
257	break;
258	case VINF_EM_RAW_GUEST_TRAP:
259	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGuestTrap);
260	break;
261	case VINF_EM_RAW_RING_SWITCH:
262	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitch);
263	break;
264	case VINF_EM_RAW_RING_SWITCH_INT:
265	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRingSwitchInt);
266	break;
267	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
268	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetExceptionPrivilege);
269	break;
270	case VINF_EM_RAW_STALE_SELECTOR:
271	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetStaleSelector);
272	break;
273	case VINF_EM_RAW_IRET_TRAP:
274	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIRETTrap);
275	break;
276	case VINF_IOM_HC_IOPORT_READ:
277	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIORead);
278	break;
279	case VINF_IOM_HC_IOPORT_WRITE:
280	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIOWrite);
281	break;
282	case VINF_IOM_HC_MMIO_READ:
283	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIORead);
284	break;
285	case VINF_IOM_HC_MMIO_WRITE:
286	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOWrite);
287	break;
288	case VINF_IOM_HC_MMIO_READ_WRITE:
289	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOReadWrite);
290	break;
291	case VINF_PATM_HC_MMIO_PATCH_READ:
292	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchRead);
293	break;
294	case VINF_PATM_HC_MMIO_PATCH_WRITE:
295	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMMIOPatchWrite);
296	break;
297	case VINF_EM_RAW_EMULATE_INSTR:
298	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulate);
299	break;
300	case VINF_PATCH_EMULATE_INSTR:
301	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchEmulate);
302	break;
303	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
304	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLDTFault);
305	break;
306	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
307	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetGDTFault);
308	break;
309	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
310	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetIDTFault);
311	break;
312	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
313	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTSSFault);
314	break;
315	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
316	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDFault);
317	break;
318	case VINF_CSAM_PENDING_ACTION:
319	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCSAMTask);
320	break;
321	case VINF_PGM_SYNC_CR3:
322	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetSyncCR3);
323	break;
324	case VINF_PATM_PATCH_INT3:
325	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchInt3);
326	break;
327	case VINF_PATM_PATCH_TRAP_PF:
328	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchPF);
329	break;
330	case VINF_PATM_PATCH_TRAP_GP:
331	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchGP);
332	break;
333	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
334	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPatchIretIRQ);
335	break;
336	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
337	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPageOverflow);
338	break;
339	case VINF_EM_RESCHEDULE_REM:
340	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRescheduleREM);
341	break;
342	case VINF_EM_RAW_TO_R3:
343	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetToR3);
344	break;
345	case VINF_EM_RAW_TIMER_PENDING:
346	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetTimerPending);
347	break;
348	case VINF_EM_RAW_INTERRUPT_PENDING:
349	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetInterruptPending);
350	break;
351	case VINF_VMM_CALL_HOST:
352	switch (pVM->vmm.s.enmCallHostOperation)
353	{
354	case VMMCALLHOST_PDM_LOCK:
355	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMLock);
356	break;
357	case VMMCALLHOST_PDM_QUEUE_FLUSH:
358	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPDMQueueFlush);
359	break;
360	case VMMCALLHOST_PGM_POOL_GROW:
361	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMPoolGrow);
362	break;
363	case VMMCALLHOST_PGM_LOCK:
364	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMLock);
365	break;
366	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
367	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetRemReplay);
368	break;
369	case VMMCALLHOST_PGM_RAM_GROW_RANGE:
370	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMGrowRAM);
371	break;
372	case VMMCALLHOST_VMM_LOGGER_FLUSH:
373	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetLogFlush);
374	break;
375	case VMMCALLHOST_VM_SET_ERROR:
376	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetVMSetError);
377	break;
378	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
379	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetVMSetRuntimeError);
380	break;
381	default:
382	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetCallHost);
383	break;
384	}
385	break;
386	case VINF_PATM_DUPLICATE_FUNCTION:
387	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPATMDuplicateFn);
388	break;
389	case VINF_PGM_CHANGE_MODE:
390	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPGMChangeMode);
391	break;
392	case VINF_EM_RAW_EMULATE_INSTR_HLT:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetEmulHlt);
394	break;
395	case VINF_EM_PENDING_REQUEST:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetPendingRequest);
397	break;
398	default:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatGCRetMisc);
400	break;
401	}
402	}
403	#endif /* VBOX_WITH_STATISTICS */
404
405
406	/**
407	* The Ring 0 entry point, called by the support library (SUP).
408	*
409	* @returns VBox status code.
410	* @param pVM The VM to operate on.
411	* @param uOperation Which operation to execute. (VMMR0OPERATION)
412	* @param pvArg Argument to the operation.
413	*/
414	VMMR0DECL(int) VMMR0Entry(PVM pVM, unsigned /* make me an enum / uOperation, void pvArg)
415	{
416	switch (uOperation)
417	{
418	/*
419	* Switch to GC.
420	* These calls return whatever the GC returns.
421	*/
422	case VMMR0_DO_RAW_RUN:
423	{
424	/* Safety precaution as VMX disables the switcher. */
425	Assert(!pVM->vmm.s.fSwitcherDisabled);
426	if (pVM->vmm.s.fSwitcherDisabled)
427	return VERR_NOT_SUPPORTED;
428
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
430	register int rc;
431	pVM->vmm.s.iLastGCRc = rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
432
433	#ifdef VBOX_WITH_STATISTICS
434	vmmR0RecordRC(pVM, rc);
435	#endif
436
437	/*
438	* Check if there is an exit R0 action associated with the return code.
439	*/
440	switch (rc)
441	{
442	/*
443	* Default - no action, just return.
444	*/
445	default:
446	return rc;
447
448	/*
449	* We'll let TRPM change the stack frame so our return is different.
450	* Just keep in mind that after the call, things have changed!
451	*/
452	case VINF_EM_RAW_INTERRUPT:
453	case VINF_EM_RAW_INTERRUPT_HYPER:
454	{
455	#ifdef VBOX_WITHOUT_IDT_PATCHING
456	TRPMR0DispatchHostInterrupt(pVM);
457	#else /* !VBOX_WITHOUT_IDT_PATCHING */
458	/*
459	* Don't trust the compiler to get this right.
460	* gcc -fomit-frame-pointer screws up big time here. This works fine in 64-bit
461	* mode too because we push the arguments on the stack in the IDT patch code.
462	*/
463	# if defined(__GNUC__)
464	void pvRet = (uint8_t )__builtin_frame_address(0) + sizeof(void *);
465	# elif defined(_MSC_VER) && defined(__AMD64__) /** @todo check this with with VC7! */
466	void pvRet = (uint8_t )_AddressOfReturnAddress();
467	# elif defined(__X86__)
468	void pvRet = (uint8_t )&pVM - sizeof(pVM);
469	# else
470	# error "huh?"
471	# endif
472	if ( ((uintptr_t *)pvRet)[1] == (uintptr_t)pVM
473	&& ((uintptr_t *)pvRet)[2] == (uintptr_t)uOperation
474	&& ((uintptr_t *)pvRet)[3] == (uintptr_t)pvArg)
475	TRPMR0SetupInterruptDispatcherFrame(pVM, pvRet);
476	else
477	{
478	# if defined(DEBUG) \|\| defined(LOG_ENABLED)
479	static bool s_fHaveWarned = false;
480	if (!s_fHaveWarned)
481	{
482	s_fHaveWarned = true;
483	//RTLogPrintf("VMMR0.r0: The compiler can't find the stack frame!\n"); -- @todo export me!
484	RTLogComPrintf("VMMR0.r0: The compiler can't find the stack frame!\n");
485	}
486	# endif
487	TRPMR0DispatchHostInterrupt(pVM);
488	}
489	#endif /* !VBOX_WITHOUT_IDT_PATCHING */
490	return rc;
491	}
492	}
493	/* Won't get here! */
494	break;
495	}
496
497	/*
498	* Run guest code using the available hardware acceleration technology.
499	*/
500	case VMMR0_DO_HWACC_RUN:
501	{
502	int rc;
503
504	STAM_COUNTER_INC(&pVM->vmm.s.StatRunGC);
505	rc = HWACCMR0Enable(pVM);
506	if (VBOX_SUCCESS(rc))
507	{
508	#ifdef DEBUG_NO_RING0_ASSERTIONS
509	g_pVMAssert = pVM;
510	#endif
511	rc = vmmR0CallHostSetJmp(&pVM->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM); /* this may resume code. */
512	#ifdef DEBUG_NO_RING0_ASSERTIONS
513	g_pVMAssert = 0;
514	#endif
515	int rc2 = HWACCMR0Disable(pVM);
516	AssertRC(rc2);
517	}
518	pVM->vmm.s.iLastGCRc = rc;
519
520	#ifdef VBOX_WITH_STATISTICS
521	vmmR0RecordRC(pVM, rc);
522	#endif
523	/* No special action required for external interrupts, just return. */
524	return rc;
525	}
526
527	/*
528	* Initialize the R0 part of a VM instance.
529	*/
530	case VMMR0_DO_VMMR0_INIT:
531	{
532	RTCCUINTREG fFlags = ASMIntDisableFlags();
533	int rc = VMMR0Init(pVM, (unsigned)(uintptr_t)pvArg);
534	ASMSetFlags(fFlags);
535	return rc;
536	}
537
538	/*
539	* Terminate the R0 part of a VM instance.
540	*/
541	case VMMR0_DO_VMMR0_TERM:
542	{
543	RTCCUINTREG fFlags = ASMIntDisableFlags();
544	int rc = VMMR0Term(pVM);
545	ASMSetFlags(fFlags);
546	return rc;
547	}
548
549	/*
550	* Setup the hardware accelerated raw-mode session.
551	*/
552	case VMMR0_DO_HWACC_SETUP_VM:
553	{
554	RTCCUINTREG fFlags = ASMIntDisableFlags();
555	int rc = HWACCMR0SetupVMX(pVM);
556	ASMSetFlags(fFlags);
557	return rc;
558	}
559
560	/*
561	* Switch to GC to execute Hypervisor function.
562	*/
563	case VMMR0_DO_CALL_HYPERVISOR:
564	{
565	/* Safety precaution as VMX disables the switcher. */
566	Assert(!pVM->vmm.s.fSwitcherDisabled);
567	if (pVM->vmm.s.fSwitcherDisabled)
568	return VERR_NOT_SUPPORTED;
569
570	RTCCUINTREG fFlags = ASMIntDisableFlags();
571	int rc = pVM->vmm.s.pfnR0HostToGuest(pVM);
572	ASMSetFlags(fFlags);
573	return rc;
574	}
575
576	#ifdef VBOX_WITH_INTERNAL_NETWORKING
577	/*
578	* Services.
579	*/
580	case VMMR0_DO_INTNET_OPEN:
581	case VMMR0_DO_INTNET_IF_CLOSE:
582	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
583	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
584	case VMMR0_DO_INTNET_IF_SEND:
585	case VMMR0_DO_INTNET_IF_WAIT:
586	{
587	/*
588	* Validate arguments a bit first.
589	*/
590	if (!VALID_PTR(pvArg))
591	return VERR_INVALID_POINTER;
592	if (!VALID_PTR(pVM))
593	return VERR_INVALID_POINTER;
594	if (pVM->pVMR0 != pVM)
595	return VERR_INVALID_POINTER;
596	if (!VALID_PTR(pVM->pSession))
597	return VERR_INVALID_POINTER;
598	if (!g_pIntNet)
599	return VERR_FILE_NOT_FOUND; ///@todo fix this status code!
600
601	/*
602	* Unpack the arguments and call the service.
603	*/
604	switch (uOperation)
605	{
606	case VMMR0_DO_INTNET_OPEN:
607	{
608	PINTNETOPENARGS pArgs = (PINTNETOPENARGS)pvArg;
609	return INTNETR0Open(g_pIntNet, pVM->pSession, &pArgs->szNetwork[0], pArgs->cbSend, pArgs->cbRecv, pArgs->fRestrictAccess, &pArgs->hIf);
610	}
611
612	case VMMR0_DO_INTNET_IF_CLOSE:
613	{
614	PINTNETIFCLOSEARGS pArgs = (PINTNETIFCLOSEARGS)pvArg;
615	return INTNETR0IfClose(g_pIntNet, pArgs->hIf);
616	}
617
618	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
619	{
620	PINTNETIFGETRING3BUFFERARGS pArgs = (PINTNETIFGETRING3BUFFERARGS)pvArg;
621	return INTNETR0IfGetRing3Buffer(g_pIntNet, pArgs->hIf, &pArgs->pRing3Buf);
622	}
623
624	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
625	{
626	PINTNETIFSETPROMISCUOUSMODEARGS pArgs = (PINTNETIFSETPROMISCUOUSMODEARGS)pvArg;
627	return INTNETR0IfSetPromiscuousMode(g_pIntNet, pArgs->hIf, pArgs->fPromiscuous);
628	}
629
630	case VMMR0_DO_INTNET_IF_SEND:
631	{
632	PINTNETIFSENDARGS pArgs = (PINTNETIFSENDARGS)pvArg;
633	return INTNETR0IfSend(g_pIntNet, pArgs->hIf, pArgs->pvFrame, pArgs->cbFrame);
634	}
635
636	case VMMR0_DO_INTNET_IF_WAIT:
637	{
638	PINTNETIFWAITARGS pArgs = (PINTNETIFWAITARGS)pvArg;
639	return INTNETR0IfWait(g_pIntNet, pArgs->hIf, pArgs->cMillies);
640	}
641
642	default:
643	return VERR_NOT_SUPPORTED;
644	}
645	}
646	#endif /* VBOX_WITH_INTERNAL_NETWORKING */
647
648	/*
649	* For profiling.
650	*/
651	case VMMR0_DO_NOP:
652	return VINF_SUCCESS;
653
654	/*
655	* For testing Ring-0 APIs invoked in this environment.
656	*/
657	case VMMR0_DO_TESTS:
658	/** @todo make new test */
659	return VINF_SUCCESS;
660
661
662	default:
663	/*
664	* We're returning VERR_NOT_SUPPORT here so we've got something else
665	* than -1 which the interrupt gate glue code might return.
666	*/
667	Log(("operation %#x is not supported\n", uOperation));
668	return VERR_NOT_SUPPORTED;
669	}
670	}
671
672
673	/**
674	* Internal R0 logger worker: Flush logger.
675	*
676	* @param pLogger The logger instance to flush.
677	* @remark This function must be exported!
678	*/
679	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
680	{
681	/*
682	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
683	* (This is a bit paranoid code.)
684	*/
685	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
686	if ( !VALID_PTR(pR0Logger)
687	\|\| !VALID_PTR(pR0Logger + 1)
688	\|\| !VALID_PTR(pLogger)
689	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
690	{
691	LogCom(("vmmR0LoggerFlush: pLogger=%p!\n", pLogger));
692	return;
693	}
694
695	PVM pVM = pR0Logger->pVM;
696	if ( !VALID_PTR(pVM)
697	\|\| pVM->pVMHC != pVM)
698	{
699	LogCom(("vmmR0LoggerFlush: pVM=%p! pLogger=%p\n", pVM, pLogger));
700	return;
701	}
702
703	/*
704	* Check that the jump buffer is armed.
705	*/
706	#ifdef __X86__
707	if (!pVM->vmm.s.CallHostR0JmpBuf.eip)
708	#else
709	if (!pVM->vmm.s.CallHostR0JmpBuf.rip)
710	#endif
711	{
712	LogCom(("vmmR0LoggerFlush: Jump buffer isn't armed!\n"));
713	pLogger->offScratch = 0;
714	return;
715	}
716
717	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
718	}
719
720	void R0LogFlush()
721	{
722	vmmR0LoggerFlush(RTLogDefaultInstance());
723	}
724
725	#ifdef DEBUG_NO_RING0_ASSERTIONS
726	#undef LOG_GROUP
727	#define LOG_GROUP LOG_GROUP_EM
728
729	/**
730	* Check if we really want to hit a breakpoint.
731	* Can jump back to ring-3 when the longjmp is armed.
732	*/
733	DECLEXPORT(bool) RTCALL RTAssertDoBreakpoint()
734	{
735	if (g_pVMAssert)
736	{
737	g_pVMAssert->vmm.s.enmCallHostOperation = VMMCALLHOST_VMM_LOGGER_FLUSH;
738	g_pVMAssert->vmm.s.u64CallHostArg = 0;
739	g_pVMAssert->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
740	int rc = vmmR0CallHostLongJmp(&g_pVMAssert->vmm.s.CallHostR0JmpBuf, VERR_INTERNAL_ERROR);
741	if (rc == VINF_SUCCESS)
742	rc = g_pVMAssert->vmm.s.rcCallHost;
743	}
744
745	return false;
746	}
747
748
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@ 2623

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