VMMInternal.h@ 90829

Last change on this file since 90829 was 90829, checked in by vboxsync, 4 years ago
IPRT,VMM,SUPDrv,++: Reworked the IPRT logger structure and how the VMM ring-0 uses it. bugref:10086
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
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1	/* $Id: VMMInternal.h 90829 2021-08-24 10:26:07Z vboxsync $ */
2	/** @file
3	* VMM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 Oracle Corporation
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
18	#ifndef VMM_INCLUDED_SRC_include_VMMInternal_h
19	#define VMM_INCLUDED_SRC_include_VMMInternal_h
20	#ifndef RT_WITHOUT_PRAGMA_ONCE
21	# pragma once
22	#endif
23
24	#include <VBox/cdefs.h>
25	#include <VBox/sup.h>
26	#include <VBox/vmm/stam.h>
27	#include <VBox/vmm/vmm.h>
28	#include <VBox/log.h>
29	#include <iprt/critsect.h>
30
31	#if !defined(IN_VMM_R3) && !defined(IN_VMM_R0) && !defined(IN_VMM_RC)
32	# error "Not in VMM! This is an internal header!"
33	#endif
34	#if HC_ARCH_BITS == 32
35	# error "32-bit hosts are no longer supported. Go back to 6.0 or earlier!"
36	#endif
37
38
39
40	/** @defgroup grp_vmm_int Internals
41	* @ingroup grp_vmm
42	* @internal
43	* @{
44	*/
45
46	/** @def VBOX_WITH_RC_RELEASE_LOGGING
47	* Enables RC release logging. */
48	#define VBOX_WITH_RC_RELEASE_LOGGING
49
50	/** @def VBOX_WITH_R0_LOGGING
51	* Enables Ring-0 logging (non-release).
52	*
53	* Ring-0 logging isn't 100% safe yet (thread id reuse / process exit cleanup),
54	* so you have to sign up here by adding your defined(DEBUG_<userid>) to the
55	* \#if, or by adding VBOX_WITH_R0_LOGGING to your LocalConfig.kmk.
56	*/
57	#if defined(DEBUG_sandervl) \|\| defined(DEBUG_frank) \|\| defined(DEBUG_ramshankar) \|\| defined(DOXYGEN_RUNNING)
58	# define VBOX_WITH_R0_LOGGING
59	#endif
60
61	/** @def VBOX_STRICT_VMM_STACK
62	* Enables VMM stack guard pages to catch stack over- and underruns. */
63	#if defined(VBOX_STRICT) \|\| defined(DOXYGEN_RUNNING)
64	# define VBOX_STRICT_VMM_STACK
65	#endif
66
67
68	/**
69	* R0 logger data (ring-0 only data).
70	*/
71	typedef struct VMMR0PERVCPULOGGER
72	{
73	/** Pointer to the logger instance.
74	* The RTLOGGER::u32UserValue1 member is used for flags and magic, while the
75	* RTLOGGER::u64UserValue2 member is the corresponding PGVMCPU value.
76	* RTLOGGER::u64UserValue3 is currently and set to the PGVMCPU value too. */
77	R0PTRTYPE(PRTLOGGER) pLogger;
78	/** Log buffer descriptor.
79	* The buffer is allocated in a common block for all VCpus, see VMMR0PERVM. */
80	RTLOGBUFFERDESC BufDesc;
81	/** Flag indicating whether we've registered the instance already. */
82	bool fRegistered;
83	bool afPadding[7];
84	} VMMR0PERVCPULOGGER;
85	/** Pointer to the R0 logger data (ring-0 only). */
86	typedef VMMR0PERVCPULOGGER *PVMMR0PERVCPULOGGER;
87
88
89	/**
90	* R0 logger data shared with ring-3 (per CPU).
91	*/
92	typedef struct VMMR3CPULOGGER
93	{
94	/** Auxiliary buffer descriptor. */
95	RTLOGBUFFERAUXDESC AuxDesc;
96	/** Ring-3 mapping of the logging buffer. */
97	R3PTRTYPE(char *) pchBufR3;
98	/** The buffer size. */
99	uint32_t cbBuf;
100	uint32_t uReserved;
101	} VMMR3CPULOGGER;
102	/** Pointer to r0 logger data shared with ring-3. */
103	typedef VMMR3CPULOGGER *PVMMR3CPULOGGER;
104
105
106	/**
107	* Jump buffer for the setjmp/longjmp like constructs used to
108	* quickly 'call' back into Ring-3.
109	*/
110	typedef struct VMMR0JMPBUF
111	{
112	/** Traditional jmp_buf stuff
113	* @{ */
114	#if HC_ARCH_BITS == 32
115	uint32_t ebx;
116	uint32_t esi;
117	uint32_t edi;
118	uint32_t ebp;
119	uint32_t esp;
120	uint32_t eip;
121	uint32_t eflags;
122	#endif
123	#if HC_ARCH_BITS == 64
124	uint64_t rbx;
125	# ifdef RT_OS_WINDOWS
126	uint64_t rsi;
127	uint64_t rdi;
128	# endif
129	uint64_t rbp;
130	uint64_t r12;
131	uint64_t r13;
132	uint64_t r14;
133	uint64_t r15;
134	uint64_t rsp;
135	uint64_t rip;
136	# ifdef RT_OS_WINDOWS
137	uint128_t xmm6;
138	uint128_t xmm7;
139	uint128_t xmm8;
140	uint128_t xmm9;
141	uint128_t xmm10;
142	uint128_t xmm11;
143	uint128_t xmm12;
144	uint128_t xmm13;
145	uint128_t xmm14;
146	uint128_t xmm15;
147	# endif
148	uint64_t rflags;
149	#endif
150	/** @} */
151
152	/** Flag that indicates that we've done a ring-3 call. */
153	bool fInRing3Call;
154	/** The number of bytes we've saved. */
155	uint32_t cbSavedStack;
156	/** Pointer to the buffer used to save the stack.
157	* This is assumed to be 8KB. */
158	RTR0PTR pvSavedStack;
159	/** Esp we we match against esp on resume to make sure the stack wasn't relocated. */
160	RTHCUINTREG SpCheck;
161	/** The esp we should resume execution with after the restore. */
162	RTHCUINTREG SpResume;
163	/** ESP/RSP at the time of the jump to ring 3. */
164	RTHCUINTREG SavedEsp;
165	/** EBP/RBP at the time of the jump to ring 3. */
166	RTHCUINTREG SavedEbp;
167	/** EIP/RIP within vmmR0CallRing3LongJmp for assisting unwinding. */
168	RTHCUINTREG SavedEipForUnwind;
169	/** Unwind: The vmmR0CallRing3SetJmp return address value. */
170	RTHCUINTREG UnwindRetPcValue;
171	/** Unwind: The vmmR0CallRing3SetJmp return address stack location. */
172	RTHCUINTREG UnwindRetPcLocation;
173
174	/** The function last being executed here. */
175	RTHCUINTREG pfn;
176	/** The first argument to the function. */
177	RTHCUINTREG pvUser1;
178	/** The second argument to the function. */
179	RTHCUINTREG pvUser2;
180
181	#if HC_ARCH_BITS == 32
182	/** Alignment padding. */
183	uint32_t uPadding;
184	#endif
185
186	/** Stats: Max amount of stack used. */
187	uint32_t cbUsedMax;
188	/** Stats: Average stack usage. (Avg = cbUsedTotal / cUsedTotal) */
189	uint32_t cbUsedAvg;
190	/** Stats: Total amount of stack used. */
191	uint64_t cbUsedTotal;
192	/** Stats: Number of stack usages. */
193	uint64_t cUsedTotal;
194	} VMMR0JMPBUF;
195	/** Pointer to a ring-0 jump buffer. */
196	typedef VMMR0JMPBUF *PVMMR0JMPBUF;
197
198
199	/**
200	* VMM Data (part of VM)
201	*/
202	typedef struct VMM
203	{
204	/** Whether we should use the periodic preemption timers. */
205	bool fUsePeriodicPreemptionTimers;
206	/** Alignment padding. */
207	bool afPadding0[7];
208
209	#if 0 /* pointless when timers doesn't run on EMT */
210	/** The EMT yield timer. */
211	TMTIMERHANDLE hYieldTimer;
212	/** The period to the next timeout when suspended or stopped.
213	* This is 0 when running. */
214	uint32_t cYieldResumeMillies;
215	/** The EMT yield timer interval (milliseconds). */
216	uint32_t cYieldEveryMillies;
217	/** The timestamp of the previous yield. (nano) */
218	uint64_t u64LastYield;
219	#endif
220
221	/** @name EMT Rendezvous
222	* @{ */
223	/** Semaphore to wait on upon entering ordered execution. */
224	R3PTRTYPE(PRTSEMEVENT) pahEvtRendezvousEnterOrdered;
225	/** Semaphore to wait on upon entering for one-by-one execution. */
226	RTSEMEVENT hEvtRendezvousEnterOneByOne;
227	/** Semaphore to wait on upon entering for all-at-once execution. */
228	RTSEMEVENTMULTI hEvtMulRendezvousEnterAllAtOnce;
229	/** Semaphore to wait on when done. */
230	RTSEMEVENTMULTI hEvtMulRendezvousDone;
231	/** Semaphore the VMMR3EmtRendezvous caller waits on at the end. */
232	RTSEMEVENT hEvtRendezvousDoneCaller;
233	/** Semaphore to wait on upon recursing. */
234	RTSEMEVENTMULTI hEvtMulRendezvousRecursionPush;
235	/** Semaphore to wait on after done with recursion (caller restoring state). */
236	RTSEMEVENTMULTI hEvtMulRendezvousRecursionPop;
237	/** Semaphore the initiator waits on while the EMTs are getting into position
238	* on hEvtMulRendezvousRecursionPush. */
239	RTSEMEVENT hEvtRendezvousRecursionPushCaller;
240	/** Semaphore the initiator waits on while the EMTs sitting on
241	* hEvtMulRendezvousRecursionPop wakes up and leave. */
242	RTSEMEVENT hEvtRendezvousRecursionPopCaller;
243	/** Callback. */
244	R3PTRTYPE(PFNVMMEMTRENDEZVOUS) volatile pfnRendezvous;
245	/** The user argument for the callback. */
246	RTR3PTR volatile pvRendezvousUser;
247	/** Flags. */
248	volatile uint32_t fRendezvousFlags;
249	/** The number of EMTs that has entered. */
250	volatile uint32_t cRendezvousEmtsEntered;
251	/** The number of EMTs that has done their job. */
252	volatile uint32_t cRendezvousEmtsDone;
253	/** The number of EMTs that has returned. */
254	volatile uint32_t cRendezvousEmtsReturned;
255	/** The status code. */
256	volatile int32_t i32RendezvousStatus;
257	/** Spin lock. */
258	volatile uint32_t u32RendezvousLock;
259	/** The recursion depth. */
260	volatile uint32_t cRendezvousRecursions;
261	/** The number of EMTs that have entered the recursion routine. */
262	volatile uint32_t cRendezvousEmtsRecursingPush;
263	/** The number of EMTs that have leaft the recursion routine. */
264	volatile uint32_t cRendezvousEmtsRecursingPop;
265	/** Triggers rendezvous recursion in the other threads. */
266	volatile bool fRendezvousRecursion;
267
268	/** @} */
269
270	/** RTThreadPreemptIsPendingTrusty() result, set by vmmR0InitVM() for
271	* release logging purposes. */
272	bool fIsPreemptPendingApiTrusty : 1;
273	/** The RTThreadPreemptIsPossible() result, set by vmmR0InitVM() for
274	* release logging purposes. */
275	bool fIsPreemptPossible : 1;
276	/** Set if ring-0 uses context hooks. */
277	bool fIsUsingContextHooks : 1;
278
279	bool afAlignment2[2]; /*< Alignment padding. /
280
281	/** Buffer for storing the standard assertion message for a ring-0 assertion.
282	* Used for saving the assertion message text for the release log and guru
283	* meditation dump. */
284	char szRing0AssertMsg1[512];
285	/** Buffer for storing the custom message for a ring-0 assertion. */
286	char szRing0AssertMsg2[256];
287
288	/** Number of VMMR0_DO_HM_RUN or VMMR0_DO_NEM_RUN calls. */
289	STAMCOUNTER StatRunGC;
290
291	/** Statistics for each of the RC/R0 return codes.
292	* @{ */
293	STAMCOUNTER StatRZRetNormal;
294	STAMCOUNTER StatRZRetInterrupt;
295	STAMCOUNTER StatRZRetInterruptHyper;
296	STAMCOUNTER StatRZRetGuestTrap;
297	STAMCOUNTER StatRZRetRingSwitch;
298	STAMCOUNTER StatRZRetRingSwitchInt;
299	STAMCOUNTER StatRZRetStaleSelector;
300	STAMCOUNTER StatRZRetIRETTrap;
301	STAMCOUNTER StatRZRetEmulate;
302	STAMCOUNTER StatRZRetPatchEmulate;
303	STAMCOUNTER StatRZRetIORead;
304	STAMCOUNTER StatRZRetIOWrite;
305	STAMCOUNTER StatRZRetIOCommitWrite;
306	STAMCOUNTER StatRZRetMMIORead;
307	STAMCOUNTER StatRZRetMMIOWrite;
308	STAMCOUNTER StatRZRetMMIOCommitWrite;
309	STAMCOUNTER StatRZRetMMIOPatchRead;
310	STAMCOUNTER StatRZRetMMIOPatchWrite;
311	STAMCOUNTER StatRZRetMMIOReadWrite;
312	STAMCOUNTER StatRZRetMSRRead;
313	STAMCOUNTER StatRZRetMSRWrite;
314	STAMCOUNTER StatRZRetLDTFault;
315	STAMCOUNTER StatRZRetGDTFault;
316	STAMCOUNTER StatRZRetIDTFault;
317	STAMCOUNTER StatRZRetTSSFault;
318	STAMCOUNTER StatRZRetCSAMTask;
319	STAMCOUNTER StatRZRetSyncCR3;
320	STAMCOUNTER StatRZRetMisc;
321	STAMCOUNTER StatRZRetPatchInt3;
322	STAMCOUNTER StatRZRetPatchPF;
323	STAMCOUNTER StatRZRetPatchGP;
324	STAMCOUNTER StatRZRetPatchIretIRQ;
325	STAMCOUNTER StatRZRetRescheduleREM;
326	STAMCOUNTER StatRZRetToR3Total;
327	STAMCOUNTER StatRZRetToR3FF;
328	STAMCOUNTER StatRZRetToR3Unknown;
329	STAMCOUNTER StatRZRetToR3TMVirt;
330	STAMCOUNTER StatRZRetToR3HandyPages;
331	STAMCOUNTER StatRZRetToR3PDMQueues;
332	STAMCOUNTER StatRZRetToR3Rendezvous;
333	STAMCOUNTER StatRZRetToR3Timer;
334	STAMCOUNTER StatRZRetToR3DMA;
335	STAMCOUNTER StatRZRetToR3CritSect;
336	STAMCOUNTER StatRZRetToR3Iem;
337	STAMCOUNTER StatRZRetToR3Iom;
338	STAMCOUNTER StatRZRetTimerPending;
339	STAMCOUNTER StatRZRetInterruptPending;
340	STAMCOUNTER StatRZRetCallRing3;
341	STAMCOUNTER StatRZRetPATMDuplicateFn;
342	STAMCOUNTER StatRZRetPGMChangeMode;
343	STAMCOUNTER StatRZRetPendingRequest;
344	STAMCOUNTER StatRZRetPGMFlushPending;
345	STAMCOUNTER StatRZRetPatchTPR;
346	STAMCOUNTER StatRZCallPDMCritSectEnter;
347	STAMCOUNTER StatRZCallPDMLock;
348	STAMCOUNTER StatRZCallLogFlush;
349	STAMCOUNTER StatRZCallPGMPoolGrow;
350	STAMCOUNTER StatRZCallPGMMapChunk;
351	STAMCOUNTER StatRZCallPGMAllocHandy;
352	STAMCOUNTER StatRZCallVMSetError;
353	STAMCOUNTER StatRZCallVMSetRuntimeError;
354	STAMCOUNTER StatRZCallPGMLock;
355	/** @} */
356	} VMM;
357	/** Pointer to VMM. */
358	typedef VMM *PVMM;
359
360
361	/**
362	* VMMCPU Data (part of VMCPU)
363	*/
364	typedef struct VMMCPU
365	{
366	/** The last RC/R0 return code. */
367	int32_t iLastGZRc;
368	/** Alignment padding. */
369	uint32_t u32Padding0;
370
371	/** VMM stack, pointer to the top of the stack in R3.
372	* Stack is allocated from the hypervisor heap and is page aligned
373	* and always writable in RC. */
374	R3PTRTYPE(uint8_t *) pbEMTStackR3;
375
376	/** @name Rendezvous
377	* @{ */
378	/** Whether the EMT is executing a rendezvous right now. For detecting
379	* attempts at recursive rendezvous. */
380	bool volatile fInRendezvous;
381	bool afPadding1[2];
382	/** @} */
383
384	/** Whether we can HLT in VMMR0 rather than having to return to EM.
385	* Updated by vmR3SetHaltMethodU(). */
386	bool fMayHaltInRing0;
387	/** The minimum delta for which we can HLT in ring-0 for.
388	* The deadlines we can calculate are from TM, so, if it's too close
389	* we should just return to ring-3 and run the timer wheel, no point
390	* in spinning in ring-0.
391	* Updated by vmR3SetHaltMethodU(). */
392	uint32_t cNsSpinBlockThreshold;
393	/** Number of ring-0 halts (used for depreciating following values). */
394	uint32_t cR0Halts;
395	/** Number of ring-0 halts succeeding (VINF_SUCCESS) recently. */
396	uint32_t cR0HaltsSucceeded;
397	/** Number of ring-0 halts failing (VINF_EM_HALT) recently. */
398	uint32_t cR0HaltsToRing3;
399	/** Padding */
400	uint32_t u32Padding2;
401
402	/** @name Raw-mode context tracing data.
403	* @{ */
404	SUPDRVTRACERUSRCTX TracerCtx;
405	/** @} */
406
407	/** Alignment padding, making sure u64CallRing3Arg and CallRing3JmpBufR0 are nicely aligned. */
408	uint32_t au32Padding3[1];
409
410	/** @name Call Ring-3
411	* Formerly known as host calls.
412	* @{ */
413	/** The disable counter. */
414	uint32_t cCallRing3Disabled;
415	/** The pending operation. */
416	VMMCALLRING3 enmCallRing3Operation;
417	/** The result of the last operation. */
418	int32_t rcCallRing3;
419	/** The argument to the operation. */
420	uint64_t u64CallRing3Arg;
421	/** The Ring-0 notification callback. */
422	R0PTRTYPE(PFNVMMR0CALLRING3NOTIFICATION) pfnCallRing3CallbackR0;
423	/** The Ring-0 notification callback user argument. */
424	R0PTRTYPE(void *) pvCallRing3CallbackUserR0;
425	/** The Ring-0 jmp buffer.
426	* @remarks The size of this type isn't stable in assembly, so don't put
427	* anything that needs to be accessed from assembly after it. */
428	VMMR0JMPBUF CallRing3JmpBufR0;
429	/** @} */
430
431	/** @name Logging
432	* @{ */
433	/** The R0 logger data shared with ring-3. */
434	VMMR3CPULOGGER Logger;
435	/** The R0 release logger data shared with ring-3. */
436	VMMR3CPULOGGER RelLogger;
437	/** @} */
438
439	STAMPROFILE StatR0HaltBlock;
440	STAMPROFILE StatR0HaltBlockOnTime;
441	STAMPROFILE StatR0HaltBlockOverslept;
442	STAMPROFILE StatR0HaltBlockInsomnia;
443	STAMCOUNTER StatR0HaltExec;
444	STAMCOUNTER StatR0HaltExecFromBlock;
445	STAMCOUNTER StatR0HaltExecFromSpin;
446	STAMCOUNTER StatR0HaltToR3;
447	STAMCOUNTER StatR0HaltToR3FromSpin;
448	STAMCOUNTER StatR0HaltToR3Other;
449	STAMCOUNTER StatR0HaltToR3PendingFF;
450	STAMCOUNTER StatR0HaltToR3SmallDelta;
451	STAMCOUNTER StatR0HaltToR3PostNoInt;
452	STAMCOUNTER StatR0HaltToR3PostPendingFF;
453	} VMMCPU;
454	AssertCompileMemberAlignment(VMMCPU, TracerCtx, 8);
455	/** Pointer to VMMCPU. */
456	typedef VMMCPU *PVMMCPU;
457
458	/**
459	* VMM per-VCpu ring-0 only instance data.
460	*/
461	typedef struct VMMR0PERVCPU
462	{
463	/** Set if we've entered HM context. */
464	bool volatile fInHmContext;
465	/** Flag indicating whether we've disabled flushing (world switch) or not. */
466	bool fLogFlushingDisabled;
467	/** The EMT hash table index. */
468	uint16_t idxEmtHash;
469	/** Pointer to the VMMR0EntryFast preemption state structure.
470	* This is used to temporarily restore preemption before blocking. */
471	R0PTRTYPE(PRTTHREADPREEMPTSTATE) pPreemptState;
472	/** Thread context switching hook (ring-0). */
473	RTTHREADCTXHOOK hCtxHook;
474
475	/** @name Arguments passed by VMMR0EntryEx via vmmR0CallRing3SetJmpEx.
476	* @note Cannot be put on the stack as the location may change and upset the
477	* validation of resume-after-ring-3-call logic.
478	* @{ */
479	PGVM pGVM;
480	VMCPUID idCpu;
481	VMMR0OPERATION enmOperation;
482	PSUPVMMR0REQHDR pReq;
483	uint64_t u64Arg;
484	PSUPDRVSESSION pSession;
485	/** @} */
486
487	/** @name Loggers
488	* @{ */
489	/** The R0 logger data. */
490	VMMR0PERVCPULOGGER Logger;
491	/** The R0 release logger data. */
492	VMMR0PERVCPULOGGER RelLogger;
493	/** @} */
494	} VMMR0PERVCPU;
495	/** Pointer to VMM ring-0 VMCPU instance data. */
496	typedef VMMR0PERVCPU *PVMMR0PERVCPU;
497
498	/** @name RTLOGGER::u32UserValue1 Flags
499	* @{ */
500	/** The magic value. */
501	#define VMMR0_LOGGER_FLAGS_MAGIC_VALUE UINT32_C(0x7d297f05)
502	/** Part of the flags value used for the magic. */
503	#define VMMR0_LOGGER_FLAGS_MAGIC_MASK UINT32_C(0xffffff0f)
504	/** Set if flushing is disabled (copy of fLogFlushingDisabled). */
505	#define VMMR0_LOGGER_FLAGS_FLUSHING_DISABLED UINT32_C(0x00000010)
506	/** @} */
507
508
509	/**
510	* VMM data kept in the ring-0 GVM.
511	*/
512	typedef struct VMMR0PERVM
513	{
514	/** Logger (debug) buffer allocation.
515	* This covers all CPUs. */
516	RTR0MEMOBJ hMemObjLogger;
517	/** The ring-3 mapping object for hMemObjLogger. */
518	RTR0MEMOBJ hMapObjLogger;
519
520	/** Release logger buffer allocation.
521	* This covers all CPUs. */
522	RTR0MEMOBJ hMemObjReleaseLogger;
523	/** The ring-3 mapping object for hMemObjReleaseLogger. */
524	RTR0MEMOBJ hMapObjReleaseLogger;
525
526	/** Set if vmmR0InitVM has been called. */
527	bool fCalledInitVm;
528	} VMMR0PERVM;
529
530	RT_C_DECLS_BEGIN
531
532	int vmmInitFormatTypes(void);
533	void vmmTermFormatTypes(void);
534	uint32_t vmmGetBuildType(void);
535
536	#ifdef IN_RING3
537	int vmmR3SwitcherInit(PVM pVM);
538	void vmmR3SwitcherRelocate(PVM pVM, RTGCINTPTR offDelta);
539	#endif /* IN_RING3 */
540
541	#ifdef IN_RING0
542
543	/**
544	* World switcher assembly routine.
545	* It will call VMMRCEntry().
546	*
547	* @returns return code from VMMRCEntry().
548	* @param pVM The cross context VM structure.
549	* @param uArg See VMMRCEntry().
550	* @internal
551	*/
552	DECLASM(int) vmmR0WorldSwitch(PVM pVM, unsigned uArg);
553
554	/**
555	* Callback function for vmmR0CallRing3SetJmp.
556	*
557	* @returns VBox status code.
558	* @param pVM The cross context VM structure.
559	*/
560	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMP,(PVMCC pVM, PVMCPUCC pVCpu));
561	/** Pointer to FNVMMR0SETJMP(). */
562	typedef FNVMMR0SETJMP *PFNVMMR0SETJMP;
563
564	/**
565	* The setjmp variant used for calling Ring-3.
566	*
567	* This differs from the normal setjmp in that it will resume VMMRZCallRing3 if we're
568	* in the middle of a ring-3 call. Another differences is the function pointer and
569	* argument. This has to do with resuming code and the stack frame of the caller.
570	*
571	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
572	* @param pJmpBuf The jmp_buf to set.
573	* @param pfn The function to be called when not resuming.
574	* @param pVM The cross context VM structure.
575	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
576	*/
577	DECLASM(int) vmmR0CallRing3SetJmp(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP pfn, PVM pVM, PVMCPU pVCpu);
578
579
580	/**
581	* Callback function for vmmR0CallRing3SetJmp2.
582	*
583	* @returns VBox status code.
584	* @param pvUser The user argument.
585	*/
586	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMP2,(PGVM pGVM, VMCPUID idCpu));
587	/** Pointer to FNVMMR0SETJMP2(). */
588	typedef FNVMMR0SETJMP2 *PFNVMMR0SETJMP2;
589
590	/**
591	* Same as vmmR0CallRing3SetJmp except for the function signature.
592	*
593	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
594	* @param pJmpBuf The jmp_buf to set.
595	* @param pfn The function to be called when not resuming.
596	* @param pGVM The ring-0 VM structure.
597	* @param idCpu The ID of the calling EMT.
598	*/
599	DECLASM(int) vmmR0CallRing3SetJmp2(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP2 pfn, PGVM pGVM, VMCPUID idCpu);
600
601
602	/**
603	* Callback function for vmmR0CallRing3SetJmpEx.
604	*
605	* @returns VBox status code.
606	* @param pvUser The user argument.
607	*/
608	typedef DECLCALLBACKTYPE(int, FNVMMR0SETJMPEX,(void *pvUser));
609	/** Pointer to FNVMMR0SETJMPEX(). */
610	typedef FNVMMR0SETJMPEX *PFNVMMR0SETJMPEX;
611
612	/**
613	* Same as vmmR0CallRing3SetJmp except for the function signature.
614	*
615	* @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallRing3LongJmp.
616	* @param pJmpBuf The jmp_buf to set.
617	* @param pfn The function to be called when not resuming.
618	* @param pvUser The argument of that function.
619	* @param uCallKey Unused call parameter that should be used to help
620	* uniquely identify the call.
621	*/
622	DECLASM(int) vmmR0CallRing3SetJmpEx(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMPEX pfn, void *pvUser, uintptr_t uCallKey);
623
624
625	/**
626	* Worker for VMMRZCallRing3.
627	* This will save the stack and registers.
628	*
629	* @returns rc.
630	* @param pJmpBuf Pointer to the jump buffer.
631	* @param rc The return code.
632	*/
633	DECLASM(int) vmmR0CallRing3LongJmp(PVMMR0JMPBUF pJmpBuf, int rc);
634
635	# ifdef VBOX_WITH_TRIPLE_FAULT_HACK
636	int vmmR0TripleFaultHackInit(void);
637	void vmmR0TripleFaultHackTerm(void);
638	# endif
639
640	#endif /* IN_RING0 */
641
642	RT_C_DECLS_END
643
644	/** @} */
645
646	#endif /* !VMM_INCLUDED_SRC_include_VMMInternal_h */

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source: vbox/trunk/src/VBox/VMM/include/VMMInternal.h@ 90829

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