initterm-r0drv-nt.cpp@ 82968

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1	/* $Id: initterm-r0drv-nt.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* IPRT - Initialization & Termination, R0 Driver, NT.
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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include "the-nt-kernel.h"
32	#include <iprt/asm-amd64-x86.h>
33	#include <iprt/dbg.h>
34	#include <iprt/errcore.h>
35	#include <iprt/string.h>
36	#include "internal/initterm.h"
37	#include "internal-r0drv-nt.h"
38	#include "symdb.h"
39	#include "symdbdata.h"
40
41
42	/*********************************************************************************************************************************
43	* Global Variables *
44	*********************************************************************************************************************************/
45	/** ExAllocatePoolWithTag, introduced in W2K. */
46	decltype(ExAllocatePoolWithTag) *g_pfnrtExAllocatePoolWithTag;
47	/** ExFreePoolWithTag, introduced in W2K. */
48	decltype(ExFreePoolWithTag) *g_pfnrtExFreePoolWithTag;
49	/** ExSetTimerResolution, introduced in W2K. */
50	PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
51	/** KeFlushQueuedDpcs, introduced in XP. */
52	PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
53	/** HalRequestIpi, version introduced with windows 7. */
54	PFNHALREQUESTIPI_W7PLUS g_pfnrtHalRequestIpiW7Plus;
55	/** HalRequestIpi, version valid up to windows vista?? */
56	PFNHALREQUESTIPI_PRE_W7 g_pfnrtHalRequestIpiPreW7;
57	/** Worker for RTMpPokeCpu. */
58	PFNRTSENDIPI g_pfnrtMpPokeCpuWorker;
59	/** KeIpiGenericCall - Introduced in Windows Server 2003. */
60	PFNRTKEIPIGENERICCALL g_pfnrtKeIpiGenericCall;
61	/** KeSetTargetProcessorDpcEx - Introduced in Windows 7. */
62	PFNKESETTARGETPROCESSORDPCEX g_pfnrtKeSetTargetProcessorDpcEx;
63	/** KeInitializeAffinityEx - Introducted in Windows 7. */
64	PFNKEINITIALIZEAFFINITYEX g_pfnrtKeInitializeAffinityEx;
65	/** KeAddProcessorAffinityEx - Introducted in Windows 7. */
66	PFNKEADDPROCESSORAFFINITYEX g_pfnrtKeAddProcessorAffinityEx;
67	/** KeGetProcessorIndexFromNumber - Introducted in Windows 7. */
68	PFNKEGETPROCESSORINDEXFROMNUMBER g_pfnrtKeGetProcessorIndexFromNumber;
69	/** KeGetProcessorNumberFromIndex - Introducted in Windows 7. */
70	PFNKEGETPROCESSORNUMBERFROMINDEX g_pfnrtKeGetProcessorNumberFromIndex;
71	/** KeGetCurrentProcessorNumberEx - Introducted in Windows 7. */
72	PFNKEGETCURRENTPROCESSORNUMBEREX g_pfnrtKeGetCurrentProcessorNumberEx;
73	/** KeQueryActiveProcessors - Introducted in Windows 2000. */
74	PFNKEQUERYACTIVEPROCESSORS g_pfnrtKeQueryActiveProcessors;
75	/** KeQueryMaximumProcessorCount - Introducted in Vista and obsoleted W7. */
76	PFNKEQUERYMAXIMUMPROCESSORCOUNT g_pfnrtKeQueryMaximumProcessorCount;
77	/** KeQueryMaximumProcessorCountEx - Introducted in Windows 7. */
78	PFNKEQUERYMAXIMUMPROCESSORCOUNTEX g_pfnrtKeQueryMaximumProcessorCountEx;
79	/** KeQueryMaximumGroupCount - Introducted in Windows 7. */
80	PFNKEQUERYMAXIMUMGROUPCOUNT g_pfnrtKeQueryMaximumGroupCount;
81	/** KeQueryActiveProcessorCount - Introducted in Vista and obsoleted W7. */
82	PFNKEQUERYACTIVEPROCESSORCOUNT g_pfnrtKeQueryActiveProcessorCount;
83	/** KeQueryActiveProcessorCountEx - Introducted in Windows 7. */
84	PFNKEQUERYACTIVEPROCESSORCOUNTEX g_pfnrtKeQueryActiveProcessorCountEx;
85	/** KeQueryLogicalProcessorRelationship - Introducted in Windows 7. */
86	PFNKEQUERYLOGICALPROCESSORRELATIONSHIP g_pfnrtKeQueryLogicalProcessorRelationship;
87	/** KeRegisterProcessorChangeCallback - Introducted in Windows 7. */
88	PFNKEREGISTERPROCESSORCHANGECALLBACK g_pfnrtKeRegisterProcessorChangeCallback;
89	/** KeDeregisterProcessorChangeCallback - Introducted in Windows 7. */
90	PFNKEDEREGISTERPROCESSORCHANGECALLBACK g_pfnrtKeDeregisterProcessorChangeCallback;
91	/** KeSetImportanceDpc - Introducted in NT 3.51. */
92	decltype(KeSetImportanceDpc) *g_pfnrtKeSetImportanceDpc;
93	/** KeSetTargetProcessorDpc - Introducted in NT 3.51. */
94	decltype(KeSetTargetProcessorDpc) *g_pfnrtKeSetTargetProcessorDpc;
95	/** KeInitializeTimerEx - Introduced in NT 4. */
96	decltype(KeInitializeTimerEx) *g_pfnrtKeInitializeTimerEx;
97	/** KeShouldYieldProcessor - Introduced in Windows 10. */
98	PFNKESHOULDYIELDPROCESSOR g_pfnrtKeShouldYieldProcessor;
99	/** Pointer to the MmProtectMdlSystemAddress kernel function if it's available.
100	* This API was introduced in XP. */
101	decltype(MmProtectMdlSystemAddress) *g_pfnrtMmProtectMdlSystemAddress;
102	/** MmAllocatePagesForMdl - Introduced in Windows 2000. */
103	decltype(MmAllocatePagesForMdl) *g_pfnrtMmAllocatePagesForMdl;
104	/** MmFreePagesFromMdl - Introduced in Windows 2000. */
105	decltype(MmFreePagesFromMdl) *g_pfnrtMmFreePagesFromMdl;
106	/** MmMapLockedPagesSpecifyCache - Introduced in Windows NT4 SP4. */
107	decltype(MmMapLockedPagesSpecifyCache) *g_pfnrtMmMapLockedPagesSpecifyCache;
108	/** MmAllocateContiguousMemorySpecifyCache - Introduced in Windows 2000. */
109	decltype(MmAllocateContiguousMemorySpecifyCache) *g_pfnrtMmAllocateContiguousMemorySpecifyCache;
110	/** MmSecureVirtualMemory - Introduced in NT 3.51. */
111	decltype(MmSecureVirtualMemory) *g_pfnrtMmSecureVirtualMemory;
112	/** MmUnsecureVirtualMemory - Introduced in NT 3.51. */
113	decltype(MmUnsecureVirtualMemory) *g_pfnrtMmUnsecureVirtualMemory;
114	/** RtlGetVersion, introduced in ??. */
115	PFNRTRTLGETVERSION g_pfnrtRtlGetVersion;
116	#ifdef RT_ARCH_X86
117	/** KeQueryInterruptTime - exported/new in Windows 2000. */
118	PFNRTKEQUERYINTERRUPTTIME g_pfnrtKeQueryInterruptTime;
119	#endif
120	/** KeQueryInterruptTimePrecise - new in Windows 8. */
121	PFNRTKEQUERYINTERRUPTTIMEPRECISE g_pfnrtKeQueryInterruptTimePrecise;
122	/** KeQuerySystemTimePrecise - new in Windows 8. */
123	PFNRTKEQUERYSYSTEMTIMEPRECISE g_pfnrtKeQuerySystemTimePrecise;
124
125	/** Offset of the _KPRCB::QuantumEnd field. 0 if not found. */
126	uint32_t g_offrtNtPbQuantumEnd;
127	/** Size of the _KPRCB::QuantumEnd field. 0 if not found. */
128	uint32_t g_cbrtNtPbQuantumEnd;
129	/** Offset of the _KPRCB::DpcQueueDepth field. 0 if not found. */
130	uint32_t g_offrtNtPbDpcQueueDepth;
131
132	/** The combined NT version, see RTNT_MAKE_VERSION. */
133	uint32_t g_uRtNtVersion = RTNT_MAKE_VERSION(4, 0);
134	/** The major version number. */
135	uint8_t g_uRtNtMajorVer;
136	/** The minor version number. */
137	uint8_t g_uRtNtMinorVer;
138	/** The build number. */
139	uint32_t g_uRtNtBuildNo;
140
141	/** Pointer to the MmHighestUserAddress kernel variable - can be NULL. */
142	uintptr_t const *g_puRtMmHighestUserAddress;
143	/** Pointer to the MmSystemRangeStart kernel variable - can be NULL. */
144	uintptr_t const *g_puRtMmSystemRangeStart;
145
146
147	/**
148	* Determines the NT kernel verison information.
149	*
150	* @param pOsVerInfo Where to return the version information.
151	*
152	* @remarks pOsVerInfo->fSmp is only definitive if @c true.
153	* @remarks pOsVerInfo->uCsdNo is set to MY_NIL_CSD if it cannot be determined.
154	*/
155	static void rtR0NtGetOsVersionInfo(PRTNTSDBOSVER pOsVerInfo)
156	{
157	ULONG ulMajorVersion = 0;
158	ULONG ulMinorVersion = 0;
159	ULONG ulBuildNumber = 0;
160
161	pOsVerInfo->fChecked = PsGetVersion(&ulMajorVersion, &ulMinorVersion, &ulBuildNumber, NULL) == TRUE;
162	pOsVerInfo->uMajorVer = (uint8_t)ulMajorVersion;
163	pOsVerInfo->uMinorVer = (uint8_t)ulMinorVersion;
164	pOsVerInfo->uBuildNo = ulBuildNumber;
165	#define MY_NIL_CSD 0x3f
166	pOsVerInfo->uCsdNo = MY_NIL_CSD;
167
168	if (g_pfnrtRtlGetVersion)
169	{
170	RTL_OSVERSIONINFOEXW VerInfo;
171	RT_ZERO(VerInfo);
172	VerInfo.dwOSVersionInfoSize = sizeof(VerInfo);
173
174	NTSTATUS rcNt = g_pfnrtRtlGetVersion(&VerInfo);
175	if (NT_SUCCESS(rcNt))
176	pOsVerInfo->uCsdNo = VerInfo.wServicePackMajor;
177	}
178
179	/* Note! We cannot quite say if something is MP or UNI. So, fSmp is
180	redefined to indicate that it must be MP.
181	Note! RTMpGetCount is not available here. */
182	pOsVerInfo->fSmp = ulMajorVersion >= 6; /* Vista and later has no UNI kernel AFAIK. */
183	if (!pOsVerInfo->fSmp)
184	{
185	if ( g_pfnrtKeQueryMaximumProcessorCountEx
186	&& g_pfnrtKeQueryMaximumProcessorCountEx(ALL_PROCESSOR_GROUPS) > 1)
187	pOsVerInfo->fSmp = true;
188	else if ( g_pfnrtKeQueryMaximumProcessorCount
189	&& g_pfnrtKeQueryMaximumProcessorCount() > 1)
190	pOsVerInfo->fSmp = true;
191	else if ( g_pfnrtKeQueryActiveProcessors
192	&& g_pfnrtKeQueryActiveProcessors() > 1)
193	pOsVerInfo->fSmp = true;
194	else if (KeNumberProcessors > 1)
195	pOsVerInfo->fSmp = true;
196	}
197	}
198
199
200	/**
201	* Tries a set against the current kernel.
202	*
203	* @retval true if it matched up, global variables are updated.
204	* @retval false otherwise (no globals updated).
205	* @param pSet The data set.
206	* @param pbPrcb Pointer to the processor control block.
207	* @param pszVendor Pointer to the processor vendor string.
208	* @param pOsVerInfo The OS version info.
209	*/
210	static bool rtR0NtTryMatchSymSet(PCRTNTSDBSET pSet, uint8_t pbPrcb, const char pszVendor, PCRTNTSDBOSVER pOsVerInfo)
211	{
212	/*
213	* Don't bother trying stuff where the NT kernel version number differs, or
214	* if the build type or SMPness doesn't match up.
215	*/
216	if ( pSet->OsVerInfo.uMajorVer != pOsVerInfo->uMajorVer
217	\|\| pSet->OsVerInfo.uMinorVer != pOsVerInfo->uMinorVer
218	\|\| pSet->OsVerInfo.fChecked != pOsVerInfo->fChecked
219	\|\| (!pSet->OsVerInfo.fSmp && pOsVerInfo->fSmp /must-be-smp/) )
220	{
221	//DbgPrint("IPRT: #%d Version/type mismatch.\n", pSet - &g_artNtSdbSets[0]);
222	return false;
223	}
224
225	/*
226	* Do the CPU vendor test.
227	*
228	* Note! The MmIsAddressValid call is the real #PF security here as the
229	* __try/__except has limited/no ability to catch everything we need.
230	*/
231	char pszPrcbVendorString = (char )&pbPrcb[pSet->KPRCB.offVendorString];
232	if (!MmIsAddressValid(&pszPrcbVendorString[4 * 3 - 1]))
233	{
234	//DbgPrint("IPRT: #%d invalid vendor string address.\n", pSet - &g_artNtSdbSets[0]);
235	return false;
236	}
237	__try
238	{
239	if (memcmp(pszPrcbVendorString, pszVendor, RT_MIN(4 * 3, pSet->KPRCB.cbVendorString)) != 0)
240	{
241	//DbgPrint("IPRT: #%d Vendor string mismatch.\n", pSet - &g_artNtSdbSets[0]);
242	return false;
243	}
244	}
245	__except(EXCEPTION_EXECUTE_HANDLER)
246	{
247	DbgPrint("IPRT: %#d Exception\n", pSet - &g_artNtSdbSets[0]);
248	return false;
249	}
250
251	/*
252	* Got a match, update the global variables and report succcess.
253	*/
254	g_offrtNtPbQuantumEnd = pSet->KPRCB.offQuantumEnd;
255	g_cbrtNtPbQuantumEnd = pSet->KPRCB.cbQuantumEnd;
256	g_offrtNtPbDpcQueueDepth = pSet->KPRCB.offDpcQueueDepth;
257
258	#if 0
259	DbgPrint("IPRT: Using data set #%u for %u.%usp%u build %u %s %s.\n",
260	pSet - &g_artNtSdbSets[0],
261	pSet->OsVerInfo.uMajorVer,
262	pSet->OsVerInfo.uMinorVer,
263	pSet->OsVerInfo.uCsdNo,
264	pSet->OsVerInfo.uBuildNo,
265	pSet->OsVerInfo.fSmp ? "smp" : "uni",
266	pSet->OsVerInfo.fChecked ? "checked" : "free");
267	#endif
268	return true;
269	}
270
271
272	DECLHIDDEN(int) rtR0InitNative(void)
273	{
274	/*
275	* Preinitialize g_uRtNtVersion so RTMemAlloc uses the right kind of pool
276	* when RTR0DbgKrnlInfoOpen calls it.
277	*/
278	RTNTSDBOSVER OsVerInfo;
279	rtR0NtGetOsVersionInfo(&OsVerInfo);
280	g_uRtNtVersion = RTNT_MAKE_VERSION(OsVerInfo.uMajorVer, OsVerInfo.uMinorVer);
281	g_uRtNtMinorVer = OsVerInfo.uMinorVer;
282	g_uRtNtMajorVer = OsVerInfo.uMajorVer;
283	g_uRtNtBuildNo = OsVerInfo.uBuildNo;
284
285	/*
286	* Initialize the function pointers.
287	*/
288	RTDBGKRNLINFO hKrnlInfo;
289	int rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0/fFlags/);
290	AssertRCReturn(rc, rc);
291
292	#define GET_SYSTEM_ROUTINE_EX(a_Prf, a_Name, a_pfnType) \
293	do { RT_CONCAT3(g_pfnrt, a_Prf, a_Name) = (a_pfnType)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, #a_Name); } while (0)
294	#define GET_SYSTEM_ROUTINE(a_Name) GET_SYSTEM_ROUTINE_EX(RT_NOTHING, a_Name, decltype(a_Name) *)
295	#define GET_SYSTEM_ROUTINE_PRF(a_Prf,a_Name) GET_SYSTEM_ROUTINE_EX(a_Prf, a_Name, decltype(a_Name) *)
296	#define GET_SYSTEM_ROUTINE_TYPE(a_Name, a_pfnType) GET_SYSTEM_ROUTINE_EX(RT_NOTHING, a_Name, a_pfnType)
297
298	GET_SYSTEM_ROUTINE(ExAllocatePoolWithTag);
299	GET_SYSTEM_ROUTINE(ExFreePoolWithTag);
300	GET_SYSTEM_ROUTINE_PRF(Nt,ExSetTimerResolution);
301	GET_SYSTEM_ROUTINE_PRF(Nt,KeFlushQueuedDpcs);
302	GET_SYSTEM_ROUTINE(KeIpiGenericCall);
303	GET_SYSTEM_ROUTINE(KeSetTargetProcessorDpcEx);
304	GET_SYSTEM_ROUTINE(KeInitializeAffinityEx);
305	GET_SYSTEM_ROUTINE(KeAddProcessorAffinityEx);
306	GET_SYSTEM_ROUTINE_TYPE(KeGetProcessorIndexFromNumber, PFNKEGETPROCESSORINDEXFROMNUMBER);
307	GET_SYSTEM_ROUTINE(KeGetProcessorNumberFromIndex);
308	GET_SYSTEM_ROUTINE_TYPE(KeGetCurrentProcessorNumberEx, PFNKEGETCURRENTPROCESSORNUMBEREX);
309	GET_SYSTEM_ROUTINE(KeQueryActiveProcessors);
310	GET_SYSTEM_ROUTINE(KeQueryMaximumProcessorCount);
311	GET_SYSTEM_ROUTINE(KeQueryMaximumProcessorCountEx);
312	GET_SYSTEM_ROUTINE(KeQueryMaximumGroupCount);
313	GET_SYSTEM_ROUTINE(KeQueryActiveProcessorCount);
314	GET_SYSTEM_ROUTINE(KeQueryActiveProcessorCountEx);
315	GET_SYSTEM_ROUTINE(KeQueryLogicalProcessorRelationship);
316	GET_SYSTEM_ROUTINE(KeRegisterProcessorChangeCallback);
317	GET_SYSTEM_ROUTINE(KeDeregisterProcessorChangeCallback);
318	GET_SYSTEM_ROUTINE(KeSetImportanceDpc);
319	GET_SYSTEM_ROUTINE(KeSetTargetProcessorDpc);
320	GET_SYSTEM_ROUTINE(KeInitializeTimerEx);
321	GET_SYSTEM_ROUTINE_TYPE(KeShouldYieldProcessor, PFNKESHOULDYIELDPROCESSOR);
322	GET_SYSTEM_ROUTINE(MmProtectMdlSystemAddress);
323	GET_SYSTEM_ROUTINE(MmAllocatePagesForMdl);
324	GET_SYSTEM_ROUTINE(MmFreePagesFromMdl);
325	GET_SYSTEM_ROUTINE(MmMapLockedPagesSpecifyCache);
326	GET_SYSTEM_ROUTINE(MmAllocateContiguousMemorySpecifyCache);
327	GET_SYSTEM_ROUTINE(MmSecureVirtualMemory);
328	GET_SYSTEM_ROUTINE(MmUnsecureVirtualMemory);
329
330	GET_SYSTEM_ROUTINE_TYPE(RtlGetVersion, PFNRTRTLGETVERSION);
331	#ifdef RT_ARCH_X86
332	GET_SYSTEM_ROUTINE(KeQueryInterruptTime);
333	#endif
334	GET_SYSTEM_ROUTINE_TYPE(KeQueryInterruptTimePrecise, PFNRTKEQUERYINTERRUPTTIMEPRECISE);
335	GET_SYSTEM_ROUTINE_TYPE(KeQuerySystemTimePrecise, PFNRTKEQUERYSYSTEMTIMEPRECISE);
336
337	g_pfnrtHalRequestIpiW7Plus = (PFNHALREQUESTIPI_W7PLUS)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "HalRequestIpi");
338	g_pfnrtHalRequestIpiPreW7 = (PFNHALREQUESTIPI_PRE_W7)g_pfnrtHalRequestIpiW7Plus;
339
340	g_puRtMmHighestUserAddress = (uintptr_t const *)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "MmHighestUserAddress");
341	g_puRtMmSystemRangeStart = (uintptr_t const *)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "MmSystemRangeStart");
342
343	#ifdef RT_ARCH_X86
344	rc = rtR0Nt3InitSymbols(hKrnlInfo);
345	RTR0DbgKrnlInfoRelease(hKrnlInfo);
346	if (RT_FAILURE(rc))
347	return rc;
348	#else
349	RTR0DbgKrnlInfoRelease(hKrnlInfo);
350	#endif
351
352	/*
353	* Get and publish the definitive NT version.
354	*/
355	rtR0NtGetOsVersionInfo(&OsVerInfo);
356	g_uRtNtVersion = RTNT_MAKE_VERSION(OsVerInfo.uMajorVer, OsVerInfo.uMinorVer);
357	g_uRtNtMinorVer = OsVerInfo.uMinorVer;
358	g_uRtNtMajorVer = OsVerInfo.uMajorVer;
359	g_uRtNtBuildNo = OsVerInfo.uBuildNo;
360
361
362	/*
363	* HACK ALERT! (and déjà vu warning - remember win32k.sys on OS/2?)
364	*
365	* Try find _KPRCB::QuantumEnd and _KPRCB::[DpcData.]DpcQueueDepth.
366	* For purpose of verification we use the VendorString member (12+1 chars).
367	*
368	* The offsets was initially derived by poking around with windbg
369	* (dt _KPRCB, !prcb ++, and such like). Systematic harvesting was then
370	* planned using dia2dump, grep and the symbol pack in a manner like this:
371	* dia2dump -type _KDPC_DATA -type _KPRCB EXE\ntkrnlmp.pdb \| grep -wE "QuantumEnd\|DpcData\|DpcQueueDepth\|VendorString"
372	*
373	* The final solution ended up using a custom harvester program called
374	* ntBldSymDb that recursively searches thru unpacked symbol packages for
375	* the desired structure offsets. The program assumes that the packages
376	* are unpacked into directories with the same name as the package, with
377	* exception of some of the w2k packages which requires a 'w2k' prefix to
378	* be distinguishable from another.
379	*/
380
381	/*
382	* Gather consistent CPU vendor string and PRCB pointers.
383	*/
384	KIRQL OldIrql;
385	KeRaiseIrql(DISPATCH_LEVEL, &OldIrql); /* make sure we stay on the same cpu */
386
387	union
388	{
389	uint32_t auRegs[4];
390	char szVendor[4*3+1];
391	} u;
392	ASMCpuId(0, &u.auRegs[3], &u.auRegs[0], &u.auRegs[2], &u.auRegs[1]);
393	u.szVendor[4*3] = '\0';
394
395	uint8_t *pbPrcb;
396	__try /* Warning. This try/except statement may provide some false safety. */
397	{
398	#if defined(RT_ARCH_X86)
399	PKPCR pPcr = (PKPCR)__readfsdword(RT_UOFFSETOF(KPCR,SelfPcr));
400	pbPrcb = (uint8_t *)pPcr->Prcb;
401	#elif defined(RT_ARCH_AMD64)
402	PKPCR pPcr = (PKPCR)__readgsqword(RT_UOFFSETOF(KPCR,Self));
403	pbPrcb = (uint8_t *)pPcr->CurrentPrcb;
404	#else
405	# error "port me"
406	pbPrcb = NULL;
407	#endif
408	}
409	__except(EXCEPTION_EXECUTE_HANDLER)
410	{
411	pbPrcb = NULL;
412	}
413
414	/*
415	* Search the database
416	*/
417	if (pbPrcb)
418	{
419	/* Find the best matching kernel version based on build number. */
420	uint32_t iBest = UINT32_MAX;
421	int32_t iBestDelta = INT32_MAX;
422	for (uint32_t i = 0; i < RT_ELEMENTS(g_artNtSdbSets); i++)
423	{
424	if (g_artNtSdbSets[i].OsVerInfo.fChecked != OsVerInfo.fChecked)
425	continue;
426	if (OsVerInfo.fSmp /must-be-smp/ && !g_artNtSdbSets[i].OsVerInfo.fSmp)
427	continue;
428
429	int32_t iDelta = RT_ABS((int32_t)OsVerInfo.uBuildNo - (int32_t)g_artNtSdbSets[i].OsVerInfo.uBuildNo);
430	if ( iDelta == 0
431	&& (g_artNtSdbSets[i].OsVerInfo.uCsdNo == OsVerInfo.uCsdNo \|\| OsVerInfo.uCsdNo == MY_NIL_CSD))
432	{
433	/* prefect */
434	iBestDelta = iDelta;
435	iBest = i;
436	break;
437	}
438	if ( iDelta < iBestDelta
439	\|\| iBest == UINT32_MAX
440	\|\| ( iDelta == iBestDelta
441	&& OsVerInfo.uCsdNo != MY_NIL_CSD
442	&& RT_ABS(g_artNtSdbSets[i ].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
443	< RT_ABS(g_artNtSdbSets[iBest].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
444	)
445	)
446	{
447	iBestDelta = iDelta;
448	iBest = i;
449	}
450	}
451	if (iBest < RT_ELEMENTS(g_artNtSdbSets))
452	{
453	/* Try all sets: iBest -> End; iBest -> Start. */
454	bool fDone = false;
455	int32_t i = iBest;
456	while ( i < RT_ELEMENTS(g_artNtSdbSets)
457	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
458	i++;
459	if (!fDone)
460	{
461	i = (int32_t)iBest - 1;
462	while ( i >= 0
463	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
464	i--;
465	}
466	}
467	else
468	DbgPrint("IPRT: Failed to locate data set.\n");
469	}
470	else
471	DbgPrint("IPRT: Failed to get PCBR pointer.\n");
472
473	KeLowerIrql(OldIrql); /* Lowering the IRQL early in the hope that we may catch exceptions below. */
474
475	#ifndef IN_GUEST
476	if (!g_offrtNtPbQuantumEnd && !g_offrtNtPbDpcQueueDepth)
477	DbgPrint("IPRT: Neither _KPRCB::QuantumEnd nor _KPRCB::DpcQueueDepth was not found! Kernel %u.%u %u %s\n",
478	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
479	# ifdef DEBUG
480	else
481	DbgPrint("IPRT: _KPRCB:{.QuantumEnd=%x/%d, .DpcQueueDepth=%x/%d} Kernel %u.%u %u %s\n",
482	g_offrtNtPbQuantumEnd, g_cbrtNtPbQuantumEnd, g_offrtNtPbDpcQueueDepth, g_offrtNtPbDpcQueueDepth,
483	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
484	# endif
485	#endif
486
487	/*
488	* Initialize multi processor stuff. This registers a callback, so
489	* we call rtR0TermNative to do the deregistration on failure.
490	*/
491	rc = rtR0MpNtInit(&OsVerInfo);
492	if (RT_FAILURE(rc))
493	{
494	rtR0TermNative();
495	DbgPrint("IPRT: Fatal: rtR0MpNtInit failed: %d\n", rc);
496	return rc;
497	}
498
499	return VINF_SUCCESS;
500	}
501
502
503	DECLHIDDEN(void) rtR0TermNative(void)
504	{
505	rtR0MpNtTerm();
506	}
507

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source: vbox/trunk/src/VBox/Runtime/r0drv/nt/initterm-r0drv-nt.cpp@ 82968

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