initterm-r0drv-nt.cpp@ 49788

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1	/* $Id: initterm-r0drv-nt.cpp 48935 2013-10-07 21:19:37Z vboxsync $ */
2	/** @file
3	* IPRT - Initialization & Termination, R0 Driver, NT.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 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	* Header Files *
29	*******************************************************************************/
30	#include "the-nt-kernel.h"
31	#include <iprt/asm-amd64-x86.h>
32	#include <iprt/assert.h>
33	#include <iprt/err.h>
34	#include <iprt/mp.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	/** The NT CPU set.
46	* KeQueryActiveProcssors() cannot be called at all IRQLs and therefore we'll
47	* have to cache it. Fortunately, Nt doesn't really support taking CPUs offline
48	* or online. It's first with W2K8 that support for CPU hotplugging was added.
49	* Once we start caring about this, we'll simply let the native MP event callback
50	* and update this variable as CPUs comes online. (The code is done already.)
51	*/
52	RTCPUSET g_rtMpNtCpuSet;
53
54	/** ExSetTimerResolution, introduced in W2K. */
55	PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
56	/** KeFlushQueuedDpcs, introduced in XP. */
57	PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
58	/** HalRequestIpi, introduced in ??. */
59	PFNHALREQUESTIPI g_pfnrtNtHalRequestIpi;
60	/** HalSendSoftwareInterrupt */
61	PFNHALSENDSOFTWAREINTERRUPT g_pfnrtNtHalSendSoftwareInterrupt;
62	/** SendIpi handler based on Windows version */
63	PFNRTSENDIPI g_pfnrtSendIpi;
64	/** KeIpiGenericCall - Windows Server 2003+ only */
65	PFNRTKEIPIGENERICCALL g_pfnrtKeIpiGenericCall;
66	/** RtlGetVersion, introduced in ??. */
67	PFNRTRTLGETVERSION g_pfnrtRtlGetVersion;
68
69	/** Offset of the _KPRCB::QuantumEnd field. 0 if not found. */
70	uint32_t g_offrtNtPbQuantumEnd;
71	/** Size of the _KPRCB::QuantumEnd field. 0 if not found. */
72	uint32_t g_cbrtNtPbQuantumEnd;
73	/** Offset of the _KPRCB::DpcQueueDepth field. 0 if not found. */
74	uint32_t g_offrtNtPbDpcQueueDepth;
75
76
77	/**
78	* Determines the NT kernel verison information.
79	*
80	* @param pOsVerInfo Where to return the version information.
81	*
82	* @remarks pOsVerInfo->fSmp is only definitive if @c true.
83	* @remarks pOsVerInfo->uCsdNo is set to MY_NIL_CSD if it cannot be determined.
84	*/
85	static void rtR0NtGetOsVersionInfo(PRTNTSDBOSVER pOsVerInfo)
86	{
87	ULONG ulMajorVersion = 0;
88	ULONG ulMinorVersion = 0;
89	ULONG ulBuildNumber = 0;
90
91	pOsVerInfo->fChecked = PsGetVersion(&ulMajorVersion, &ulMinorVersion, &ulBuildNumber, NULL) == TRUE;
92	pOsVerInfo->uMajorVer = (uint8_t)ulMajorVersion;
93	pOsVerInfo->uMinorVer = (uint8_t)ulMinorVersion;
94	pOsVerInfo->uBuildNo = ulBuildNumber;
95	#define MY_NIL_CSD 0x3f
96	pOsVerInfo->uCsdNo = MY_NIL_CSD;
97
98	if (g_pfnrtRtlGetVersion)
99	{
100	RTL_OSVERSIONINFOEXW VerInfo;
101	RT_ZERO(VerInfo);
102	VerInfo.dwOSVersionInfoSize = sizeof(VerInfo);
103
104	NTSTATUS rcNt = g_pfnrtRtlGetVersion(&VerInfo);
105	if (NT_SUCCESS(rcNt))
106	pOsVerInfo->uCsdNo = VerInfo.wServicePackMajor;
107	}
108
109	/* Note! We cannot quite say if something is MP or UNI. So, fSmp is
110	redefined to indicate that it must be MP. */
111	pOsVerInfo->fSmp = RTMpGetCount() > 1
112	\|\| ulMajorVersion >= 6; /* Vista and later has no UNI kernel AFAIK. */
113	}
114
115
116	/**
117	* Tries a set against the current kernel.
118	*
119	* @retval @c true if it matched up, global variables are updated.
120	* @retval @c false otherwise (no globals updated).
121	* @param pSet The data set.
122	* @param pbPrcb Pointer to the processor control block.
123	* @param pszVendor Pointer to the processor vendor string.
124	* @param pOsVerInfo The OS version info.
125	*/
126	static bool rtR0NtTryMatchSymSet(PCRTNTSDBSET pSet, uint8_t pbPrcb, const char pszVendor, PCRTNTSDBOSVER pOsVerInfo)
127	{
128	/*
129	* Don't bother trying stuff where the NT kernel version number differs, or
130	* if the build type or SMPness doesn't match up.
131	*/
132	if ( pSet->OsVerInfo.uMajorVer != pOsVerInfo->uMajorVer
133	\|\| pSet->OsVerInfo.uMinorVer != pOsVerInfo->uMinorVer
134	\|\| pSet->OsVerInfo.fChecked != pOsVerInfo->fChecked
135	\|\| (!pSet->OsVerInfo.fSmp && pOsVerInfo->fSmp /must-be-smp/) )
136	{
137	//DbgPrint("IPRT: #%d Version/type mismatch.\n", pSet - &g_artNtSdbSets[0]);
138	return false;
139	}
140
141	/*
142	* Do the CPU vendor test.
143	*
144	* Note! The MmIsAddressValid call is the real #PF security here as the
145	* __try/__except has limited/no ability to catch everything we need.
146	*/
147	char pszPrcbVendorString = (char )&pbPrcb[pSet->KPRCB.offVendorString];
148	if (!MmIsAddressValid(&pszPrcbVendorString[4 * 3 - 1]))
149	{
150	//DbgPrint("IPRT: #%d invalid vendor string address.\n", pSet - &g_artNtSdbSets[0]);
151	return false;
152	}
153	__try
154	{
155	if (memcmp(pszPrcbVendorString, pszVendor, RT_MIN(4 * 3, pSet->KPRCB.cbVendorString)) != 0)
156	{
157	//DbgPrint("IPRT: #%d Vendor string mismatch.\n", pSet - &g_artNtSdbSets[0]);
158	return false;
159	}
160	}
161	__except(EXCEPTION_EXECUTE_HANDLER)
162	{
163	DbgPrint("IPRT: %#d Exception\n", pSet - &g_artNtSdbSets[0]);
164	return false;
165	}
166
167	/*
168	* Got a match, update the global variables and report succcess.
169	*/
170	g_offrtNtPbQuantumEnd = pSet->KPRCB.offQuantumEnd;
171	g_cbrtNtPbQuantumEnd = pSet->KPRCB.cbQuantumEnd;
172	g_offrtNtPbDpcQueueDepth = pSet->KPRCB.offDpcQueueDepth;
173
174	#if 0
175	DbgPrint("IPRT: Using data set #%u for %u.%usp%u build %u %s %s.\n",
176	pSet - &g_artNtSdbSets[0],
177	pSet->OsVerInfo.uMajorVer,
178	pSet->OsVerInfo.uMinorVer,
179	pSet->OsVerInfo.uCsdNo,
180	pSet->OsVerInfo.uBuildNo,
181	pSet->OsVerInfo.fSmp ? "smp" : "uni",
182	pSet->OsVerInfo.fChecked ? "checked" : "free");
183	#endif
184	return true;
185	}
186
187
188	DECLHIDDEN(int) rtR0InitNative(void)
189	{
190	/*
191	* Init the Nt cpu set.
192	*/
193	#ifdef IPRT_TARGET_NT4
194	KAFFINITY ActiveProcessors = (UINT64_C(1) << KeNumberProcessors) - UINT64_C(1);
195	#else
196	KAFFINITY ActiveProcessors = KeQueryActiveProcessors();
197	#endif
198	RTCpuSetEmpty(&g_rtMpNtCpuSet);
199	RTCpuSetFromU64(&g_rtMpNtCpuSet, ActiveProcessors);
200	/** @todo Port to W2K8 with > 64 cpus/threads. */
201
202	#ifdef IPRT_TARGET_NT4
203	g_pfnrtNtExSetTimerResolution = NULL;
204	g_pfnrtNtKeFlushQueuedDpcs = NULL;
205	g_pfnrtNtHalRequestIpi = NULL;
206	g_pfnrtNtHalSendSoftwareInterrupt = NULL;
207	g_pfnrtKeIpiGenericCall = NULL;
208	g_pfnrtRtlGetVersion = NULL;
209	#else
210	/*
211	* Initialize the function pointers.
212	*/
213	UNICODE_STRING RoutineName;
214	RtlInitUnicodeString(&RoutineName, L"ExSetTimerResolution");
215	g_pfnrtNtExSetTimerResolution = (PFNMYEXSETTIMERRESOLUTION)MmGetSystemRoutineAddress(&RoutineName);
216
217	RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
218	g_pfnrtNtKeFlushQueuedDpcs = (PFNMYKEFLUSHQUEUEDDPCS)MmGetSystemRoutineAddress(&RoutineName);
219
220	RtlInitUnicodeString(&RoutineName, L"HalRequestIpi");
221	g_pfnrtNtHalRequestIpi = (PFNHALREQUESTIPI)MmGetSystemRoutineAddress(&RoutineName);
222
223	RtlInitUnicodeString(&RoutineName, L"HalSendSoftwareInterrupt");
224	g_pfnrtNtHalSendSoftwareInterrupt = (PFNHALSENDSOFTWAREINTERRUPT)MmGetSystemRoutineAddress(&RoutineName);
225
226	RtlInitUnicodeString(&RoutineName, L"KeIpiGenericCall");
227	g_pfnrtKeIpiGenericCall = (PFNRTKEIPIGENERICCALL)MmGetSystemRoutineAddress(&RoutineName);
228
229	RtlInitUnicodeString(&RoutineName, L"RtlGetVersion");
230	g_pfnrtRtlGetVersion = (PFNRTRTLGETVERSION)MmGetSystemRoutineAddress(&RoutineName);
231	#endif
232
233	/*
234	* HACK ALERT! (and déjà vu warning - remember win32k.sys?)
235	*
236	* Try find _KPRCB::QuantumEnd and _KPRCB::[DpcData.]DpcQueueDepth.
237	* For purpose of verification we use the VendorString member (12+1 chars).
238	*
239	* The offsets was initially derived by poking around with windbg
240	* (dt _KPRCB, !prcb ++, and such like). Systematic harvesting was then
241	* planned using dia2dump, grep and the symbol pack in a manner like this:
242	* dia2dump -type _KDPC_DATA -type _KPRCB EXE\ntkrnlmp.pdb \| grep -wE "QuantumEnd\|DpcData\|DpcQueueDepth\|VendorString"
243	*
244	* The final solution ended up using a custom harvester program called
245	* ntBldSymDb that recursively searches thru unpacked symbol packages for
246	* the desired structure offsets. The program assumes that the packages
247	* are unpacked into directories with the same name as the package, with
248	* exception of some of the w2k packages which requires a 'w2k' prefix to
249	* be distinguishable from another.
250	*/
251
252	RTNTSDBOSVER OsVerInfo;
253	rtR0NtGetOsVersionInfo(&OsVerInfo);
254
255	/*
256	* Gather consistent CPU vendor string and PRCB pointers.
257	*/
258	KIRQL OldIrql;
259	KeRaiseIrql(DISPATCH_LEVEL, &OldIrql); /* make sure we stay on the same cpu */
260
261	union
262	{
263	uint32_t auRegs[4];
264	char szVendor[4*3+1];
265	} u;
266	ASMCpuId(0, &u.auRegs[3], &u.auRegs[0], &u.auRegs[2], &u.auRegs[1]);
267	u.szVendor[4*3] = '\0';
268
269	uint8_t *pbPrcb;
270	__try /* Warning. This try/except statement may provide some false safety. */
271	{
272	#if defined(RT_ARCH_X86)
273	PKPCR pPcr = (PKPCR)__readfsdword(RT_OFFSETOF(KPCR,SelfPcr));
274	pbPrcb = (uint8_t *)pPcr->Prcb;
275	#elif defined(RT_ARCH_AMD64)
276	PKPCR pPcr = (PKPCR)__readgsqword(RT_OFFSETOF(KPCR,Self));
277	pbPrcb = (uint8_t *)pPcr->CurrentPrcb;
278	#else
279	# error "port me"
280	pbPrcb = NULL;
281	#endif
282	}
283	__except(EXCEPTION_EXECUTE_HANDLER)
284	{
285	pbPrcb = NULL;
286	}
287
288	/*
289	* Search the database
290	*/
291	if (pbPrcb)
292	{
293	/* Find the best matching kernel version based on build number. */
294	uint32_t iBest = UINT32_MAX;
295	int32_t iBestDelta = INT32_MAX;
296	for (uint32_t i = 0; i < RT_ELEMENTS(g_artNtSdbSets); i++)
297	{
298	if (g_artNtSdbSets[i].OsVerInfo.fChecked != OsVerInfo.fChecked)
299	continue;
300	if (OsVerInfo.fSmp /must-be-smp/ && !g_artNtSdbSets[i].OsVerInfo.fSmp)
301	continue;
302
303	int32_t iDelta = RT_ABS((int32_t)OsVerInfo.uBuildNo - (int32_t)g_artNtSdbSets[i].OsVerInfo.uBuildNo);
304	if ( iDelta == 0
305	&& (g_artNtSdbSets[i].OsVerInfo.uCsdNo == OsVerInfo.uCsdNo \|\| OsVerInfo.uCsdNo == MY_NIL_CSD))
306	{
307	/* prefect */
308	iBestDelta = iDelta;
309	iBest = i;
310	break;
311	}
312	if ( iDelta < iBestDelta
313	\|\| iBest == UINT32_MAX
314	\|\| ( iDelta == iBestDelta
315	&& OsVerInfo.uCsdNo != MY_NIL_CSD
316	&& RT_ABS(g_artNtSdbSets[i ].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
317	< RT_ABS(g_artNtSdbSets[iBest].OsVerInfo.uCsdNo - (int32_t)OsVerInfo.uCsdNo)
318	)
319	)
320	{
321	iBestDelta = iDelta;
322	iBest = i;
323	}
324	}
325	if (iBest < RT_ELEMENTS(g_artNtSdbSets))
326	{
327	/* Try all sets: iBest -> End; iBest -> Start. */
328	bool fDone = false;
329	int32_t i = iBest;
330	while ( i < RT_ELEMENTS(g_artNtSdbSets)
331	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
332	i++;
333	if (!fDone)
334	{
335	i = (int32_t)iBest - 1;
336	while ( i >= 0
337	&& !(fDone = rtR0NtTryMatchSymSet(&g_artNtSdbSets[i], pbPrcb, u.szVendor, &OsVerInfo)))
338	i--;
339	}
340	}
341	else
342	DbgPrint("IPRT: Failed to locate data set.\n");
343	}
344	else
345	DbgPrint("IPRT: Failed to get PCBR pointer.\n");
346
347	KeLowerIrql(OldIrql); /* Lowering the IRQL early in the hope that we may catch exceptions below. */
348
349	#ifndef IN_GUEST
350	if (!g_offrtNtPbQuantumEnd && !g_offrtNtPbDpcQueueDepth)
351	DbgPrint("IPRT: Neither _KPRCB::QuantumEnd nor _KPRCB::DpcQueueDepth was not found! Kernel %u.%u %u %s\n",
352	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
353	# ifdef DEBUG
354	else
355	DbgPrint("IPRT: _KPRCB:{.QuantumEnd=%x/%d, .DpcQueueDepth=%x/%d} Kernel %u.%u %u %s\n",
356	g_offrtNtPbQuantumEnd, g_cbrtNtPbQuantumEnd, g_offrtNtPbDpcQueueDepth,
357	OsVerInfo.uMajorVer, OsVerInfo.uMinorVer, OsVerInfo.uBuildNo, OsVerInfo.fChecked ? "checked" : "free");
358	# endif
359	#endif
360
361	/*
362	* Special IPI fun.
363	*/
364	g_pfnrtSendIpi = rtMpSendIpiDummy;
365	#ifndef IPRT_TARGET_NT4
366	if ( g_pfnrtNtHalRequestIpi
367	&& OsVerInfo.uMajorVer == 6
368	&& OsVerInfo.uMinorVer == 0)
369	{
370	/* Vista or Windows Server 2008 */
371	g_pfnrtSendIpi = rtMpSendIpiVista;
372	}
373	else if ( g_pfnrtNtHalSendSoftwareInterrupt
374	&& OsVerInfo.uMajorVer == 6
375	&& OsVerInfo.uMinorVer == 1)
376	{
377	/* Windows 7 or Windows Server 2008 R2 */
378	g_pfnrtSendIpi = rtMpSendIpiWin7;
379	}
380	/* Windows XP should send always send an IPI -> VERIFY */
381	#endif
382
383	return VINF_SUCCESS;
384	}
385
386
387	DECLHIDDEN(void) rtR0TermNative(void)
388	{
389	}
390

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source: vbox/trunk/src/VBox/Runtime/r0drv/nt/initterm-r0drv-nt.cpp@ 49788

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