initterm-r0drv-nt.cpp@ 70362

Last change on this file since 70362 was 70341, checked in by vboxsync, 7 years ago
IPRT: More NT 3.1 compatibility tweaking.
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 21.2 KB

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1	/* $Id: initterm-r0drv-nt.cpp 70341 2017-12-26 14:42:28Z vboxsync $ */
2	/** @file
3	* IPRT - Initialization & Termination, R0 Driver, NT.
4	*/
5
6	/*
7	* Copyright (C) 2006-2017 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/err.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	/** Pointer to the MmProtectMdlSystemAddress kernel function if it's available.
98	* This API was introduced in XP. */
99	decltype(MmProtectMdlSystemAddress) *g_pfnrtMmProtectMdlSystemAddress;
100	/** MmAllocatePagesForMdl - Introduced in Windows 2000. */
101	decltype(MmAllocatePagesForMdl) *g_pfnrtMmAllocatePagesForMdl;
102	/** MmFreePagesFromMdl - Introduced in Windows 2000. */
103	decltype(MmFreePagesFromMdl) *g_pfnrtMmFreePagesFromMdl;
104	/** MmMapLockedPagesSpecifyCache - Introduced in Windows NT4 SP4. */
105	decltype(MmMapLockedPagesSpecifyCache) *g_pfnrtMmMapLockedPagesSpecifyCache;
106	/** MmAllocateContiguousMemorySpecifyCache - Introduced in Windows 2000. */
107	decltype(MmAllocateContiguousMemorySpecifyCache) *g_pfnrtMmAllocateContiguousMemorySpecifyCache;
108	/** MmSecureVirtualMemory - Introduced in NT 3.51. */
109	decltype(MmSecureVirtualMemory) *g_pfnrtMmSecureVirtualMemory;
110	/** MmUnsecureVirtualMemory - Introduced in NT 3.51. */
111	decltype(MmUnsecureVirtualMemory) *g_pfnrtMmUnsecureVirtualMemory;
112	/** RtlGetVersion, introduced in ??. */
113	PFNRTRTLGETVERSION g_pfnrtRtlGetVersion;
114	#ifdef RT_ARCH_X86
115	/** KeQueryInterruptTime - exported/new in Windows 2000. */
116	PFNRTKEQUERYINTERRUPTTIME g_pfnrtKeQueryInterruptTime;
117	#endif
118	/** KeQueryInterruptTimePrecise - new in Windows 8. */
119	PFNRTKEQUERYINTERRUPTTIMEPRECISE g_pfnrtKeQueryInterruptTimePrecise;
120	/** KeQuerySystemTimePrecise - new in Windows 8. */
121	PFNRTKEQUERYSYSTEMTIMEPRECISE g_pfnrtKeQuerySystemTimePrecise;
122
123	/** Offset of the _KPRCB::QuantumEnd field. 0 if not found. */
124	uint32_t g_offrtNtPbQuantumEnd;
125	/** Size of the _KPRCB::QuantumEnd field. 0 if not found. */
126	uint32_t g_cbrtNtPbQuantumEnd;
127	/** Offset of the _KPRCB::DpcQueueDepth field. 0 if not found. */
128	uint32_t g_offrtNtPbDpcQueueDepth;
129
130	/** The combined NT version, see RTNT_MAKE_VERSION. */
131	uint32_t g_uRtNtVersion = RTNT_MAKE_VERSION(4, 0);
132	/** The major version number. */
133	uint8_t g_uRtNtMajorVer;
134	/** The minor version number. */
135	uint8_t g_uRtNtMinorVer;
136	/** The build number. */
137	uint32_t g_uRtNtBuildNo;
138
139	/** Pointer to the MmHighestUserAddress kernel variable - can be NULL. */
140	uintptr_t const *g_puRtMmHighestUserAddress;
141	/** Pointer to the MmSystemRangeStart kernel variable - can be NULL. */
142	uintptr_t const *g_puRtMmSystemRangeStart;
143
144
145	/**
146	* Determines the NT kernel verison information.
147	*
148	* @param pOsVerInfo Where to return the version information.
149	*
150	* @remarks pOsVerInfo->fSmp is only definitive if @c true.
151	* @remarks pOsVerInfo->uCsdNo is set to MY_NIL_CSD if it cannot be determined.
152	*/
153	static void rtR0NtGetOsVersionInfo(PRTNTSDBOSVER pOsVerInfo)
154	{
155	ULONG ulMajorVersion = 0;
156	ULONG ulMinorVersion = 0;
157	ULONG ulBuildNumber = 0;
158
159	pOsVerInfo->fChecked = PsGetVersion(&ulMajorVersion, &ulMinorVersion, &ulBuildNumber, NULL) == TRUE;
160	pOsVerInfo->uMajorVer = (uint8_t)ulMajorVersion;
161	pOsVerInfo->uMinorVer = (uint8_t)ulMinorVersion;
162	pOsVerInfo->uBuildNo = ulBuildNumber;
163	#define MY_NIL_CSD 0x3f
164	pOsVerInfo->uCsdNo = MY_NIL_CSD;
165
166	if (g_pfnrtRtlGetVersion)
167	{
168	RTL_OSVERSIONINFOEXW VerInfo;
169	RT_ZERO(VerInfo);
170	VerInfo.dwOSVersionInfoSize = sizeof(VerInfo);
171
172	NTSTATUS rcNt = g_pfnrtRtlGetVersion(&VerInfo);
173	if (NT_SUCCESS(rcNt))
174	pOsVerInfo->uCsdNo = VerInfo.wServicePackMajor;
175	}
176
177	/* Note! We cannot quite say if something is MP or UNI. So, fSmp is
178	redefined to indicate that it must be MP.
179	Note! RTMpGetCount is not available here. */
180	pOsVerInfo->fSmp = ulMajorVersion >= 6; /* Vista and later has no UNI kernel AFAIK. */
181	if (!pOsVerInfo->fSmp)
182	{
183	if ( g_pfnrtKeQueryMaximumProcessorCountEx
184	&& g_pfnrtKeQueryMaximumProcessorCountEx(ALL_PROCESSOR_GROUPS) > 1)
185	pOsVerInfo->fSmp = true;
186	else if ( g_pfnrtKeQueryMaximumProcessorCount
187	&& g_pfnrtKeQueryMaximumProcessorCount() > 1)
188	pOsVerInfo->fSmp = true;
189	else if ( g_pfnrtKeQueryActiveProcessors
190	&& g_pfnrtKeQueryActiveProcessors() > 1)
191	pOsVerInfo->fSmp = true;
192	else if (KeNumberProcessors > 1)
193	pOsVerInfo->fSmp = true;
194	}
195	}
196
197
198	/**
199	* Tries a set against the current kernel.
200	*
201	* @retval true if it matched up, global variables are updated.
202	* @retval false otherwise (no globals updated).
203	* @param pSet The data set.
204	* @param pbPrcb Pointer to the processor control block.
205	* @param pszVendor Pointer to the processor vendor string.
206	* @param pOsVerInfo The OS version info.
207	*/
208	static bool rtR0NtTryMatchSymSet(PCRTNTSDBSET pSet, uint8_t pbPrcb, const char pszVendor, PCRTNTSDBOSVER pOsVerInfo)
209	{
210	/*
211	* Don't bother trying stuff where the NT kernel version number differs, or
212	* if the build type or SMPness doesn't match up.
213	*/
214	if ( pSet->OsVerInfo.uMajorVer != pOsVerInfo->uMajorVer
215	\|\| pSet->OsVerInfo.uMinorVer != pOsVerInfo->uMinorVer
216	\|\| pSet->OsVerInfo.fChecked != pOsVerInfo->fChecked
217	\|\| (!pSet->OsVerInfo.fSmp && pOsVerInfo->fSmp /must-be-smp/) )
218	{
219	//DbgPrint("IPRT: #%d Version/type mismatch.\n", pSet - &g_artNtSdbSets[0]);
220	return false;
221	}
222
223	/*
224	* Do the CPU vendor test.
225	*
226	* Note! The MmIsAddressValid call is the real #PF security here as the
227	* __try/__except has limited/no ability to catch everything we need.
228	*/
229	char pszPrcbVendorString = (char )&pbPrcb[pSet->KPRCB.offVendorString];
230	if (!MmIsAddressValid(&pszPrcbVendorString[4 * 3 - 1]))
231	{
232	//DbgPrint("IPRT: #%d invalid vendor string address.\n", pSet - &g_artNtSdbSets[0]);
233	return false;
234	}
235	__try
236	{
237	if (memcmp(pszPrcbVendorString, pszVendor, RT_MIN(4 * 3, pSet->KPRCB.cbVendorString)) != 0)
238	{
239	//DbgPrint("IPRT: #%d Vendor string mismatch.\n", pSet - &g_artNtSdbSets[0]);
240	return false;
241	}
242	}
243	__except(EXCEPTION_EXECUTE_HANDLER)
244	{
245	DbgPrint("IPRT: %#d Exception\n", pSet - &g_artNtSdbSets[0]);
246	return false;
247	}
248
249	/*
250	* Got a match, update the global variables and report succcess.
251	*/
252	g_offrtNtPbQuantumEnd = pSet->KPRCB.offQuantumEnd;
253	g_cbrtNtPbQuantumEnd = pSet->KPRCB.cbQuantumEnd;
254	g_offrtNtPbDpcQueueDepth = pSet->KPRCB.offDpcQueueDepth;
255
256	#if 0
257	DbgPrint("IPRT: Using data set #%u for %u.%usp%u build %u %s %s.\n",
258	pSet - &g_artNtSdbSets[0],
259	pSet->OsVerInfo.uMajorVer,
260	pSet->OsVerInfo.uMinorVer,
261	pSet->OsVerInfo.uCsdNo,
262	pSet->OsVerInfo.uBuildNo,
263	pSet->OsVerInfo.fSmp ? "smp" : "uni",
264	pSet->OsVerInfo.fChecked ? "checked" : "free");
265	#endif
266	return true;
267	}
268
269
270	DECLHIDDEN(int) rtR0InitNative(void)
271	{
272	/*
273	* Initialize the function pointers.
274	*/
275	RTDBGKRNLINFO hKrnlInfo;
276	int rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0/fFlags/);
277	AssertRCReturn(rc, rc);
278
279	#define GET_SYSTEM_ROUTINE_EX(a_Prf, a_Name, a_pfnType) \
280	do { RT_CONCAT3(g_pfnrt, a_Prf, a_Name) = (a_pfnType)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, #a_Name); } while (0)
281	#define GET_SYSTEM_ROUTINE(a_Name) GET_SYSTEM_ROUTINE_EX(RT_NOTHING, a_Name, decltype(a_Name) *)
282	#define GET_SYSTEM_ROUTINE_PRF(a_Prf,a_Name) GET_SYSTEM_ROUTINE_EX(a_Prf, a_Name, decltype(a_Name) *)
283	#define GET_SYSTEM_ROUTINE_TYPE(a_Name, a_pfnType) GET_SYSTEM_ROUTINE_EX(RT_NOTHING, a_Name, a_pfnType)
284
285	GET_SYSTEM_ROUTINE(ExAllocatePoolWithTag);
286	GET_SYSTEM_ROUTINE(ExFreePoolWithTag);
287	GET_SYSTEM_ROUTINE_PRF(Nt,ExSetTimerResolution);
288	GET_SYSTEM_ROUTINE_PRF(Nt,KeFlushQueuedDpcs);
289	GET_SYSTEM_ROUTINE(KeIpiGenericCall);
290	GET_SYSTEM_ROUTINE(KeSetTargetProcessorDpcEx);
291	GET_SYSTEM_ROUTINE(KeInitializeAffinityEx);
292	GET_SYSTEM_ROUTINE(KeAddProcessorAffinityEx);
293	GET_SYSTEM_ROUTINE_TYPE(KeGetProcessorIndexFromNumber, PFNKEGETPROCESSORINDEXFROMNUMBER);
294	GET_SYSTEM_ROUTINE(KeGetProcessorNumberFromIndex);
295	GET_SYSTEM_ROUTINE_TYPE(KeGetCurrentProcessorNumberEx, PFNKEGETCURRENTPROCESSORNUMBEREX);
296	GET_SYSTEM_ROUTINE(KeQueryActiveProcessors);
297	GET_SYSTEM_ROUTINE(KeQueryMaximumProcessorCount);
298	GET_SYSTEM_ROUTINE(KeQueryMaximumProcessorCountEx);
299	GET_SYSTEM_ROUTINE(KeQueryMaximumGroupCount);
300	GET_SYSTEM_ROUTINE(KeQueryActiveProcessorCount);
301	GET_SYSTEM_ROUTINE(KeQueryActiveProcessorCountEx);
302	GET_SYSTEM_ROUTINE(KeQueryLogicalProcessorRelationship);
303	GET_SYSTEM_ROUTINE(KeRegisterProcessorChangeCallback);
304	GET_SYSTEM_ROUTINE(KeDeregisterProcessorChangeCallback);
305	GET_SYSTEM_ROUTINE(KeSetImportanceDpc);
306	GET_SYSTEM_ROUTINE(KeSetTargetProcessorDpc);
307	GET_SYSTEM_ROUTINE(KeInitializeTimerEx);
308	GET_SYSTEM_ROUTINE(MmProtectMdlSystemAddress);
309	GET_SYSTEM_ROUTINE(MmAllocatePagesForMdl);
310	GET_SYSTEM_ROUTINE(MmFreePagesFromMdl);
311	GET_SYSTEM_ROUTINE(MmMapLockedPagesSpecifyCache);
312	GET_SYSTEM_ROUTINE(MmAllocateContiguousMemorySpecifyCache);
313	GET_SYSTEM_ROUTINE(MmSecureVirtualMemory);
314	GET_SYSTEM_ROUTINE(MmUnsecureVirtualMemory);
315
316	GET_SYSTEM_ROUTINE_TYPE(RtlGetVersion, PFNRTRTLGETVERSION);
317	#ifdef RT_ARCH_X86
318	GET_SYSTEM_ROUTINE(KeQueryInterruptTime);
319	#endif
320	GET_SYSTEM_ROUTINE_TYPE(KeQueryInterruptTimePrecise, PFNRTKEQUERYINTERRUPTTIMEPRECISE);
321	GET_SYSTEM_ROUTINE_TYPE(KeQuerySystemTimePrecise, PFNRTKEQUERYSYSTEMTIMEPRECISE);
322
323	g_pfnrtHalRequestIpiW7Plus = (PFNHALREQUESTIPI_W7PLUS)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "HalRequestIpi");
324	g_pfnrtHalRequestIpiPreW7 = (PFNHALREQUESTIPI_PRE_W7)g_pfnrtHalRequestIpiW7Plus;
325
326	g_puRtMmHighestUserAddress = (uintptr_t const *)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "MmHighestUserAddress");
327	g_puRtMmSystemRangeStart = (uintptr_t const *)RTR0DbgKrnlInfoGetSymbol(hKrnlInfo, NULL, "MmSystemRangeStart");
328
329	#ifdef RT_ARCH_X86
330	rc = rtR0Nt3InitSymbols(hKrnlInfo);
331	RTR0DbgKrnlInfoRelease(hKrnlInfo);
332	if (RT_FAILURE(rc))
333	return rc;
334	#else
335	RTR0DbgKrnlInfoRelease(hKrnlInfo);
336	#endif
337
338	/*
339	* HACK ALERT! (and déjà vu warning - remember win32k.sys?)
340	*
341	* Try find _KPRCB::QuantumEnd and _KPRCB::[DpcData.]DpcQueueDepth.
342	* For purpose of verification we use the VendorString member (12+1 chars).
343	*
344	* The offsets was initially derived by poking around with windbg
345	* (dt _KPRCB, !prcb ++, and such like). Systematic harvesting was then
346	* planned using dia2dump, grep and the symbol pack in a manner like this:
347	* dia2dump -type _KDPC_DATA -type _KPRCB EXE\ntkrnlmp.pdb \| grep -wE "QuantumEnd\|DpcData\|DpcQueueDepth\|VendorString"
348	*
349	* The final solution ended up using a custom harvester program called
350	* ntBldSymDb that recursively searches thru unpacked symbol packages for
351	* the desired structure offsets. The program assumes that the packages
352	* are unpacked into directories with the same name as the package, with
353	* exception of some of the w2k packages which requires a 'w2k' prefix to
354	* be distinguishable from another.
355	*/
356
357	RTNTSDBOSVER OsVerInfo;
358	rtR0NtGetOsVersionInfo(&OsVerInfo);
359
360	/* Publish the version info in globals. */
361	g_uRtNtVersion = RTNT_MAKE_VERSION(OsVerInfo.uMajorVer, OsVerInfo.uMinorVer);
362	g_uRtNtMinorVer = OsVerInfo.uMinorVer;
363	g_uRtNtMajorVer = OsVerInfo.uMajorVer;
364	g_uRtNtBuildNo = OsVerInfo.uBuildNo;
365
366	/*
367	* Gather consistent CPU vendor string and PRCB pointers.
368	*/
369	KIRQL OldIrql;
370	KeRaiseIrql(DISPATCH_LEVEL, &OldIrql); /* make sure we stay on the same cpu */
371
372	union
373	{
374	uint32_t auRegs[4];
375	char szVendor[4*3+1];
376	} u;
377	ASMCpuId(0, &u.auRegs[3], &u.auRegs[0], &u.auRegs[2], &u.auRegs[1]);
378	u.szVendor[4*3] = '\0';
379
380	uint8_t *pbPrcb;
381	__try /* Warning. This try/except statement may provide some false safety. */
382	{
383	#if defined(RT_ARCH_X86)
384	PKPCR pPcr = (PKPCR)__readfsdword(RT_OFFSETOF(KPCR,SelfPcr));
385	pbPrcb = (uint8_t *)pPcr->Prcb;
386	#elif defined(RT_ARCH_AMD64)
387	PKPCR pPcr = (PKPCR)__readgsqword(RT_OFFSETOF(KPCR,Self));
388	pbPrcb = (uint8_t *)pPcr->CurrentPrcb;
389	#else
390	# error "port me"
391	pbPrcb = NULL;
392	#endif
393	}
394	__except(EXCEPTION_EXECUTE_HANDLER)
395	{
396	pbPrcb = NULL;
397	}
398
399	/*
400	* Search the database
401	*/
402	if (pbPrcb)
403	{
404	/* Find the best matching kernel version based on build number. */
405	uint32_t iBest = UINT32_MAX;
406	int32_t iBestDelta = INT32_MAX;
407	for (uint32_t i = 0; i < RT_ELEMENTS(g_artNtSdbSets); i++)
408	{
409	if (g_artNtSdbSets[i].OsVerInfo.fChecked != OsVerInfo.fChecked)
410	continue;
411	if (OsVerInfo.fSmp /must-be-smp/ && !g_artNtSdbSets[i].OsVerInfo.fSmp)
412	continue;
413
414	int32_t iDelta = RT_ABS((int32_t)OsVerInfo.uBuildNo - (int32_t)g_artNtSdbSets[i].OsVerInfo.uBuildNo);
415	if ( iDelta == 0
416	&& (g_artNtSdbSets[i].OsVerInfo.uCsdNo == OsVerInfo.uCsdNo \|\| OsVerInfo.uCsdNo == MY_NIL_CSD))
417	{
418	/* prefect */
419	iBestDelta = iDelta;
420	iBest = i;
421	break;
422	}
423	if ( iDelta < iBestDelta
424	\|\| iBest == UINT32_MAX
425	\|\| ( iDelta == iBestDelta
426	&& OsVerInfo.uCsdNo != MY_NIL_CSD
427	&& RT_ABS(g_artNtSdbSets[i ].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
428	< RT_ABS(g_artNtSdbSets[iBest].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
429	)
430	)
431	{
432	iBestDelta = iDelta;
433	iBest = i;
434	}
435	}
436	if (iBest < RT_ELEMENTS(g_artNtSdbSets))
437	{
438	/* Try all sets: iBest -> End; iBest -> Start. */
439	bool fDone = false;
440	int32_t i = iBest;
441	while ( i < RT_ELEMENTS(g_artNtSdbSets)
442	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
443	i++;
444	if (!fDone)
445	{
446	i = (int32_t)iBest - 1;
447	while ( i >= 0
448	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
449	i--;
450	}
451	}
452	else
453	DbgPrint("IPRT: Failed to locate data set.\n");
454	}
455	else
456	DbgPrint("IPRT: Failed to get PCBR pointer.\n");
457
458	KeLowerIrql(OldIrql); /* Lowering the IRQL early in the hope that we may catch exceptions below. */
459
460	#ifndef IN_GUEST
461	if (!g_offrtNtPbQuantumEnd && !g_offrtNtPbDpcQueueDepth)
462	DbgPrint("IPRT: Neither _KPRCB::QuantumEnd nor _KPRCB::DpcQueueDepth was not found! Kernel %u.%u %u %s\n",
463	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
464	# ifdef DEBUG
465	else
466	DbgPrint("IPRT: _KPRCB:{.QuantumEnd=%x/%d, .DpcQueueDepth=%x/%d} Kernel %u.%u %u %s\n",
467	g_offrtNtPbQuantumEnd, g_cbrtNtPbQuantumEnd, g_offrtNtPbDpcQueueDepth, g_offrtNtPbDpcQueueDepth,
468	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
469	# endif
470	#endif
471
472	/*
473	* Initialize multi processor stuff. This registers a callback, so
474	* we call rtR0TermNative to do the deregistration on failure.
475	*/
476	rc = rtR0MpNtInit(&OsVerInfo);
477	if (RT_FAILURE(rc))
478	{
479	rtR0TermNative();
480	DbgPrint("IPRT: Fatal: rtR0MpNtInit failed: %d\n", rc);
481	return rc;
482	}
483
484	return VINF_SUCCESS;
485	}
486
487
488	DECLHIDDEN(void) rtR0TermNative(void)
489	{
490	rtR0MpNtTerm();
491	}
492

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source: vbox/trunk/src/VBox/Runtime/r0drv/nt/initterm-r0drv-nt.cpp@ 70362

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