DBGPlugInWinNt.cpp@ 73491

Last change on this file since 73491 was 73491, checked in by vboxsync, 6 years ago
DBGF,DBGPluInWinNt: Produce more useful module names (e.g. stuff that works in DBGC).
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1	/* $Id: DBGPlugInWinNt.cpp 73491 2018-08-03 14:51:55Z vboxsync $ */
2	/** @file
3	* DBGPlugInWindows - Debugger and Guest OS Digger Plugin For Windows NT.
4	*/
5
6	/*
7	* Copyright (C) 2009-2017 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
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DBGF /// @todo add new log group.
23	#include "DBGPlugIns.h"
24	#include <VBox/vmm/dbgf.h>
25	#include <VBox/vmm/cpumctx.h>
26	#include <VBox/vmm/mm.h>
27	#include <VBox/err.h>
28	#include <VBox/param.h>
29	#include <iprt/ctype.h>
30	#include <iprt/ldr.h>
31	#include <iprt/mem.h>
32	#include <iprt/path.h>
33	#include <iprt/stream.h>
34	#include <iprt/string.h>
35	#include <iprt/formats/pecoff.h>
36	#include <iprt/formats/mz.h>
37	#include <iprt/nt/nt-structures.h>
38
39
40	/*********************************************************************************************************************************
41	* Structures and Typedefs *
42	*********************************************************************************************************************************/
43
44	/** @name Internal WinNT structures
45	* @{ */
46	/**
47	* PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
48	* Tested with XP.
49	*/
50	typedef struct NTMTE32
51	{
52	struct
53	{
54	uint32_t Flink;
55	uint32_t Blink;
56	} InLoadOrderLinks,
57	InMemoryOrderModuleList,
58	InInitializationOrderModuleList;
59	uint32_t DllBase;
60	uint32_t EntryPoint;
61	/** @note This field is not a size in NT 3.1. It's NULL for images loaded by the
62	* boot loader, for other images it looks like some kind of pointer. */
63	uint32_t SizeOfImage;
64	struct
65	{
66	uint16_t Length;
67	uint16_t MaximumLength;
68	uint32_t Buffer;
69	} FullDllName,
70	BaseDllName;
71	uint32_t Flags;
72	uint16_t LoadCount;
73	uint16_t TlsIndex;
74	/* ... there is more ... */
75	} NTMTE32;
76	typedef NTMTE32 *PNTMTE32;
77
78	/**
79	* PsLoadedModuleList entry for 64-bit NT aka LDR_DATA_TABLE_ENTRY.
80	*/
81	typedef struct NTMTE64
82	{
83	struct
84	{
85	uint64_t Flink;
86	uint64_t Blink;
87	} InLoadOrderLinks, /*< 0x00 /
88	InMemoryOrderModuleList, /*< 0x10 /
89	InInitializationOrderModuleList; /*< 0x20 /
90	uint64_t DllBase; /*< 0x30 /
91	uint64_t EntryPoint; /*< 0x38 /
92	uint32_t SizeOfImage; /*< 0x40 /
93	uint32_t Alignment; /*< 0x44 /
94	struct
95	{
96	uint16_t Length; /*< 0x48,0x58 /
97	uint16_t MaximumLength; /*< 0x4a,0x5a /
98	uint32_t Alignment; /*< 0x4c,0x5c /
99	uint64_t Buffer; /*< 0x50,0x60 /
100	} FullDllName, /*< 0x48 /
101	BaseDllName; /*< 0x58 /
102	uint32_t Flags; /*< 0x68 /
103	uint16_t LoadCount; /*< 0x6c /
104	uint16_t TlsIndex; /*< 0x6e /
105	/* ... there is more ... */
106	} NTMTE64;
107	typedef NTMTE64 *PNTMTE64;
108
109	/** MTE union. */
110	typedef union NTMTE
111	{
112	NTMTE32 vX_32;
113	NTMTE64 vX_64;
114	} NTMTE;
115	typedef NTMTE *PNTMTE;
116
117
118	/**
119	* The essential bits of the KUSER_SHARED_DATA structure.
120	*/
121	typedef struct NTKUSERSHAREDDATA
122	{
123	uint32_t TickCountLowDeprecated;
124	uint32_t TickCountMultiplier;
125	struct
126	{
127	uint32_t LowPart;
128	int32_t High1Time;
129	int32_t High2Time;
130
131	} InterruptTime,
132	SystemTime,
133	TimeZoneBias;
134	uint16_t ImageNumberLow;
135	uint16_t ImageNumberHigh;
136	RTUTF16 NtSystemRoot[260];
137	uint32_t MaxStackTraceDepth;
138	uint32_t CryptoExponent;
139	uint32_t TimeZoneId;
140	uint32_t LargePageMinimum;
141	uint32_t Reserved2[7];
142	uint32_t NtProductType;
143	uint8_t ProductTypeIsValid;
144	uint8_t abPadding[3];
145	uint32_t NtMajorVersion;
146	uint32_t NtMinorVersion;
147	/* uint8_t ProcessorFeatures[64];
148	...
149	*/
150	} NTKUSERSHAREDDATA;
151	typedef NTKUSERSHAREDDATA *PNTKUSERSHAREDDATA;
152
153	/** KI_USER_SHARED_DATA for i386 */
154	#define NTKUSERSHAREDDATA_WINNT32 UINT32_C(0xffdf0000)
155	/** KI_USER_SHARED_DATA for AMD64 */
156	#define NTKUSERSHAREDDATA_WINNT64 UINT64_C(0xfffff78000000000)
157
158	/** NTKUSERSHAREDDATA::NtProductType */
159	typedef enum NTPRODUCTTYPE
160	{
161	kNtProductType_Invalid = 0,
162	kNtProductType_WinNt = 1,
163	kNtProductType_LanManNt,
164	kNtProductType_Server
165	} NTPRODUCTTYPE;
166
167
168	/** NT image header union. */
169	typedef union NTHDRSU
170	{
171	IMAGE_NT_HEADERS32 vX_32;
172	IMAGE_NT_HEADERS64 vX_64;
173	} NTHDRS;
174	/** Pointer to NT image header union. */
175	typedef NTHDRS *PNTHDRS;
176	/** Pointer to const NT image header union. */
177	typedef NTHDRS const *PCNTHDRS;
178
179	/** @} */
180
181
182
183	typedef enum DBGDIGGERWINNTVER
184	{
185	DBGDIGGERWINNTVER_UNKNOWN,
186	DBGDIGGERWINNTVER_3_1,
187	DBGDIGGERWINNTVER_3_5,
188	DBGDIGGERWINNTVER_4_0,
189	DBGDIGGERWINNTVER_5_0,
190	DBGDIGGERWINNTVER_5_1,
191	DBGDIGGERWINNTVER_6_0
192	} DBGDIGGERWINNTVER;
193
194	/**
195	* WinNT guest OS digger instance data.
196	*/
197	typedef struct DBGDIGGERWINNT
198	{
199	/** Whether the information is valid or not.
200	* (For fending off illegal interface method calls.) */
201	bool fValid;
202	/** 32-bit (true) or 64-bit (false) */
203	bool f32Bit;
204	/** Set if NT 3.1 was detected.
205	* This implies both Misc.VirtualSize and NTMTE32::SizeOfImage are zero. */
206	bool fNt31;
207
208	/** The NT version. */
209	DBGDIGGERWINNTVER enmVer;
210	/** NTKUSERSHAREDDATA::NtProductType */
211	NTPRODUCTTYPE NtProductType;
212	/** NTKUSERSHAREDDATA::NtMajorVersion */
213	uint32_t NtMajorVersion;
214	/** NTKUSERSHAREDDATA::NtMinorVersion */
215	uint32_t NtMinorVersion;
216
217	/** The address of the ntoskrnl.exe image. */
218	DBGFADDRESS KernelAddr;
219	/** The address of the ntoskrnl.exe module table entry. */
220	DBGFADDRESS KernelMteAddr;
221	/** The address of PsLoadedModuleList. */
222	DBGFADDRESS PsLoadedModuleListAddr;
223	} DBGDIGGERWINNT;
224	/** Pointer to the linux guest OS digger instance data. */
225	typedef DBGDIGGERWINNT *PDBGDIGGERWINNT;
226
227
228	/**
229	* The WinNT digger's loader reader instance data.
230	*/
231	typedef struct DBGDIGGERWINNTRDR
232	{
233	/** The VM handle (referenced). */
234	PUVM pUVM;
235	/** The image base. */
236	DBGFADDRESS ImageAddr;
237	/** The image size. */
238	uint32_t cbImage;
239	/** The file offset of the SizeOfImage field in the optional header if it
240	* needs patching, otherwise set to UINT32_MAX. */
241	uint32_t offSizeOfImage;
242	/** The correct image size. */
243	uint32_t cbCorrectImageSize;
244	/** Number of entries in the aMappings table. */
245	uint32_t cMappings;
246	/** Mapping hint. */
247	uint32_t iHint;
248	/** Mapping file offset to memory offsets, ordered by file offset. */
249	struct
250	{
251	/** The file offset. */
252	uint32_t offFile;
253	/** The size of this mapping. */
254	uint32_t cbMem;
255	/** The offset to the memory from the start of the image. */
256	uint32_t offMem;
257	} aMappings[1];
258	} DBGDIGGERWINNTRDR;
259	/** Pointer a WinNT loader reader instance data. */
260	typedef DBGDIGGERWINNTRDR *PDBGDIGGERWINNTRDR;
261
262
263	/*********************************************************************************************************************************
264	* Defined Constants And Macros *
265	*********************************************************************************************************************************/
266	/** Validates a 32-bit Windows NT kernel address */
267	#define WINNT32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x80000000) && (Addr) < UINT32_C(0xfffff000))
268	/** Validates a 64-bit Windows NT kernel address */
269	#define WINNT64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffff800000000000) && (Addr) < UINT64_C(0xfffffffffffff000))
270	/** Validates a kernel address. */
271	#define WINNT_VALID_ADDRESS(pThis, Addr) ((pThis)->f32Bit ? WINNT32_VALID_ADDRESS(Addr) : WINNT64_VALID_ADDRESS(Addr))
272	/** Versioned and bitness wrapper. */
273	#define WINNT_UNION(pThis, pUnion, Member) ((pThis)->f32Bit ? (pUnion)->vX_32. Member : (pUnion)->vX_64. Member )
274
275	/** The length (in chars) of the kernel file name (no path). */
276	#define WINNT_KERNEL_BASE_NAME_LEN 12
277
278	/** WindowsNT on little endian ASCII systems. */
279	#define DIG_WINNT_MOD_TAG UINT64_C(0x54696e646f774e54)
280
281
282	/*********************************************************************************************************************************
283	* Internal Functions *
284	*********************************************************************************************************************************/
285	static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData);
286
287
288	/*********************************************************************************************************************************
289	* Global Variables *
290	*********************************************************************************************************************************/
291	/** Kernel names. */
292	static const RTUTF16 g_wszKernelNames[][WINNT_KERNEL_BASE_NAME_LEN + 1] =
293	{
294	{ 'n', 't', 'o', 's', 'k', 'r', 'n', 'l', '.', 'e', 'x', 'e' }
295	};
296
297
298
299	/**
300	* Process a PE image found in guest memory.
301	*
302	* @param pThis The instance data.
303	* @param pUVM The user mode VM handle.
304	* @param pszName The module name.
305	* @param pszFilename The image filename.
306	* @param pImageAddr The image address.
307	* @param cbImage The size of the image.
308	*/
309	static void dbgDiggerWinNtProcessImage(PDBGDIGGERWINNT pThis, PUVM pUVM, const char pszName, const char pszFilename,
310	PCDBGFADDRESS pImageAddr, uint32_t cbImage)
311	{
312	LogFlow(("DigWinNt: %RGp %#x %s\n", pImageAddr->FlatPtr, cbImage, pszName));
313
314	/*
315	* Do some basic validation first.
316	*/
317	if ( (cbImage < sizeof(IMAGE_NT_HEADERS64) && !pThis->fNt31)
318	\|\| cbImage >= _1M * 256)
319	{
320	Log(("DigWinNt: %s: Bad image size: %#x\n", pszName, cbImage));
321	return;
322	}
323
324	/*
325	* Use the common in-memory module reader to create a debug module.
326	*/
327	RTERRINFOSTATIC ErrInfo;
328	RTDBGMOD hDbgMod = NIL_RTDBGMOD;
329	int rc = DBGFR3ModInMem(pUVM, pImageAddr, pThis->fNt31 ? DBGFMODINMEM_F_PE_NT31 : 0, pszName, pszFilename,
330	pThis->f32Bit ? RTLDRARCH_X86_32 : RTLDRARCH_AMD64, cbImage,
331	&hDbgMod, RTErrInfoInitStatic(&ErrInfo));
332	if (RT_SUCCESS(rc))
333	{
334	/*
335	* Tag the module.
336	*/
337	rc = RTDbgModSetTag(hDbgMod, DIG_WINNT_MOD_TAG);
338	AssertRC(rc);
339
340	/*
341	* Link the module.
342	*/
343	RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
344	if (hAs != NIL_RTDBGAS)
345	rc = RTDbgAsModuleLink(hAs, hDbgMod, pImageAddr->FlatPtr, RTDBGASLINK_FLAGS_REPLACE /fFlags/);
346	else
347	rc = VERR_INTERNAL_ERROR;
348	RTDbgModRelease(hDbgMod);
349	RTDbgAsRelease(hAs);
350	}
351	else if (RTErrInfoIsSet(&ErrInfo.Core))
352	Log(("DigWinNt: %s: DBGFR3ModInMem failed: %Rrc - %s\n", pszName, rc, ErrInfo.Core.pszMsg));
353	else
354	Log(("DigWinNt: %s: DBGFR3ModInMem failed: %Rrc\n", pszName, rc));
355	}
356
357
358	/**
359	* Adjust the module name into something that's compatible with the debugger.
360	*
361	* @param pUVM The user mode VM handle.
362	* @param ppszName Pointer to the image name pointer.
363	* @param pImageAddr The image load address.
364	*/
365	static const char dbgDiggerWintNtFilenameToModuleName(const char pszFilename, char *pszName, size_t cbName)
366	{
367	/* Skip to the filename part of the filename. :-) */
368	pszFilename = RTPathFilenameEx(pszFilename, RTPATH_STR_F_STYLE_DOS);
369
370	/* We try use 'nt' for the kernel. */
371	if ( RTStrICmpAscii(pszFilename, "ntoskrnl.exe") == 0
372	\|\| RTStrICmpAscii(pszFilename, "ntkrnlmp.exe") == 0)
373	return "nt";
374
375
376	/* Drop the extension if .dll or .sys. */
377	size_t cchFilename = strlen(pszFilename);
378	if ( cchFilename > 4
379	&& pszFilename[cchFilename - 4] == '.')
380	{
381	if ( RTStrICmpAscii(&pszFilename[cchFilename - 4], ".sys") == 0
382	\|\| RTStrICmpAscii(&pszFilename[cchFilename - 4], ".dll") == 0)
383	cchFilename -= 4;
384	}
385
386	/* Copy and do replacements. */
387	if (cchFilename >= cbName)
388	cchFilename = cbName - 1;
389	size_t off;
390	for (off = 0; off < cchFilename; off++)
391	{
392	char ch = pszFilename[off];
393	if (!RT_C_IS_ALNUM(ch))
394	ch = '_';
395	pszName[off] = ch;
396	}
397	pszName[off] = '\0';
398	return pszName;
399	}
400
401
402	/**
403	* @copydoc DBGFOSREG::pfnStackUnwindAssist
404	*/
405	static DECLCALLBACK(int) dbgDiggerWinNtStackUnwindAssist(PUVM pUVM, void *pvData, VMCPUID idCpu, PDBGFSTACKFRAME pFrame,
406	PRTDBGUNWINDSTATE pState, PCCPUMCTX pInitialCtx, RTDBGAS hAs,
407	uint64_t *puScratch)
408	{
409	Assert(pInitialCtx);
410
411	/*
412	* We want to locate trap frames here. The trap frame structure contains
413	* the 64-bit IRET frame, so given unwind information it's easy to identify
414	* using the return type and frame address.
415	*/
416	if (pFrame->fFlags & DBGFSTACKFRAME_FLAGS_64BIT)
417	{
418	/*
419	* Is this a trap frame? If so, try read the trap frame.
420	*/
421	if ( pFrame->enmReturnType == RTDBGRETURNTYPE_IRET64
422	&& !(pFrame->AddrFrame.FlatPtr & 0x7)
423	&& WINNT64_VALID_ADDRESS(pFrame->AddrFrame.FlatPtr) )
424	{
425	KTRAP_FRAME_AMD64 TrapFrame;
426	RT_ZERO(TrapFrame);
427	uint64_t const uTrapFrameAddr = pFrame->AddrFrame.FlatPtr
428	- RT_UOFFSETOF(KTRAP_FRAME_AMD64, ErrCdOrXcptFrameOrS);
429	int rc = pState->pfnReadStack(pState, uTrapFrameAddr, sizeof(TrapFrame), &TrapFrame);
430	if (RT_SUCCESS(rc))
431	{
432	/* Valid? Not too much else we can check here (EFlags isn't
433	reliable in manually construct frames). */
434	if (TrapFrame.ExceptionActive <= 2)
435	{
436	pFrame->fFlags \|= DBGFSTACKFRAME_FLAGS_TRAP_FRAME;
437
438	/*
439	* Add sure 'register' information from the frame to the frame.
440	*
441	* To avoid code duplication, we do this in two steps in a loop.
442	* The first iteration only figures out how many registers we're
443	* going to save and allocates room for them. The second iteration
444	* does the actual adding.
445	*/
446	uint32_t cRegs = pFrame->cSureRegs;
447	PDBGFREGVALEX paSureRegs = NULL;
448	#define ADD_REG_NAMED(a_Type, a_ValMemb, a_Value, a_pszName) do { \
449	if (paSureRegs) \
450	{ \
451	paSureRegs[iReg].pszName = a_pszName;\
452	paSureRegs[iReg].enmReg = DBGFREG_END; \
453	paSureRegs[iReg].enmType = a_Type; \
454	paSureRegs[iReg].Value.a_ValMemb = (a_Value); \
455	} \
456	iReg++; \
457	} while (0)
458	#define MAYBE_ADD_GREG(a_Value, a_enmReg, a_idxReg) do { \
459	if (!(pState->u.x86.Loaded.s.fRegs & RT_BIT(a_idxReg))) \
460	{ \
461	if (paSureRegs) \
462	{ \
463	pState->u.x86.Loaded.s.fRegs \|= RT_BIT(a_idxReg); \
464	pState->u.x86.auRegs[a_idxReg] = (a_Value); \
465	paSureRegs[iReg].Value.u64 = (a_Value); \
466	paSureRegs[iReg].enmReg = a_enmReg; \
467	paSureRegs[iReg].enmType = DBGFREGVALTYPE_U64; \
468	paSureRegs[iReg].pszName = NULL; \
469	} \
470	iReg++; \
471	} \
472	} while (0)
473	for (unsigned iLoop = 0; iLoop < 2; iLoop++)
474	{
475	uint32_t iReg = pFrame->cSureRegs;
476	ADD_REG_NAMED(DBGFREGVALTYPE_U64, u64, uTrapFrameAddr, "TrapFrame");
477	ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, TrapFrame.ExceptionActive, "ExceptionActive");
478	if (TrapFrame.ExceptionActive == 0)
479	{
480	ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, TrapFrame.PreviousIrql, "PrevIrql");
481	ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, (uint8_t)TrapFrame.ErrCdOrXcptFrameOrS, "IntNo");
482	}
483	else if ( TrapFrame.ExceptionActive == 1
484	&& TrapFrame.FaultIndicator == ((TrapFrame.ErrCdOrXcptFrameOrS >> 1) & 0x9))
485	ADD_REG_NAMED(DBGFREGVALTYPE_U64, u64, TrapFrame.FaultAddrOrCtxRecOrTS, "cr2-probably");
486	if (TrapFrame.SegCs & X86_SEL_RPL)
487	ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, 1, "UserMode");
488	else
489	ADD_REG_NAMED(DBGFREGVALTYPE_U8, u8, 1, "KernelMode");
490	if (TrapFrame.ExceptionActive <= 1)
491	{
492	MAYBE_ADD_GREG(TrapFrame.Rax, DBGFREG_RAX, X86_GREG_xAX);
493	MAYBE_ADD_GREG(TrapFrame.Rcx, DBGFREG_RCX, X86_GREG_xCX);
494	MAYBE_ADD_GREG(TrapFrame.Rdx, DBGFREG_RDX, X86_GREG_xDX);
495	MAYBE_ADD_GREG(TrapFrame.R8, DBGFREG_R8, X86_GREG_x8);
496	MAYBE_ADD_GREG(TrapFrame.R9, DBGFREG_R9, X86_GREG_x9);
497	MAYBE_ADD_GREG(TrapFrame.R10, DBGFREG_R10, X86_GREG_x10);
498	MAYBE_ADD_GREG(TrapFrame.R11, DBGFREG_R11, X86_GREG_x11);
499	}
500	else if (TrapFrame.ExceptionActive == 2)
501	{
502	MAYBE_ADD_GREG(TrapFrame.Rbx, DBGFREG_RBX, X86_GREG_xBX);
503	MAYBE_ADD_GREG(TrapFrame.Rsi, DBGFREG_RSI, X86_GREG_xSI);
504	MAYBE_ADD_GREG(TrapFrame.Rdi, DBGFREG_RDI, X86_GREG_xDI);
505	}
506	// MAYBE_ADD_GREG(TrapFrame.Rbp, DBGFREG_RBP, X86_GREG_xBP); - KiInterrupt[Sub]Dispatch* may leave this invalid.
507
508	/* Done? */
509	if (iLoop > 0)
510	{
511	Assert(cRegs == iReg);
512	break;
513	}
514
515	/* Resize the array, zeroing the extension. */
516	if (pFrame->cSureRegs)
517	paSureRegs = (PDBGFREGVALEX)MMR3HeapRealloc(pFrame->paSureRegs, iReg * sizeof(paSureRegs[0]));
518	else
519	paSureRegs = (PDBGFREGVALEX)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_STACK, iReg * sizeof(paSureRegs[0]));
520	AssertReturn(paSureRegs, VERR_NO_MEMORY);
521
522	pFrame->paSureRegs = paSureRegs;
523	RT_BZERO(&paSureRegs[pFrame->cSureRegs], (iReg - pFrame->cSureRegs) * sizeof(paSureRegs[0]));
524	cRegs = iReg;
525	}
526	#undef ADD_REG_NAMED
527	#undef MAYBE_ADD_GREG
528
529	/* Commit the register update. */
530	pFrame->cSureRegs = cRegs;
531	}
532	}
533	}
534	}
535
536	RT_NOREF(pUVM, pvData, idCpu, hAs, pInitialCtx, puScratch);
537	return VINF_SUCCESS;
538	}
539
540
541	/**
542	* @copydoc DBGFOSREG::pfnQueryInterface
543	*/
544	static DECLCALLBACK(void ) dbgDiggerWinNtQueryInterface(PUVM pUVM, void pvData, DBGFOSINTERFACE enmIf)
545	{
546	RT_NOREF3(pUVM, pvData, enmIf);
547	return NULL;
548	}
549
550
551	/**
552	* @copydoc DBGFOSREG::pfnQueryVersion
553	*/
554	static DECLCALLBACK(int) dbgDiggerWinNtQueryVersion(PUVM pUVM, void pvData, char pszVersion, size_t cchVersion)
555	{
556	RT_NOREF1(pUVM);
557	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
558	Assert(pThis->fValid);
559	const char *pszNtProductType;
560	switch (pThis->NtProductType)
561	{
562	case kNtProductType_WinNt: pszNtProductType = "-WinNT"; break;
563	case kNtProductType_LanManNt: pszNtProductType = "-LanManNT"; break;
564	case kNtProductType_Server: pszNtProductType = "-Server"; break;
565	default: pszNtProductType = ""; break;
566	}
567	RTStrPrintf(pszVersion, cchVersion, "%u.%u-%s%s", pThis->NtMajorVersion, pThis->NtMinorVersion,
568	pThis->f32Bit ? "x86" : "AMD64", pszNtProductType);
569	return VINF_SUCCESS;
570	}
571
572
573	/**
574	* @copydoc DBGFOSREG::pfnTerm
575	*/
576	static DECLCALLBACK(void) dbgDiggerWinNtTerm(PUVM pUVM, void *pvData)
577	{
578	RT_NOREF1(pUVM);
579	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
580	Assert(pThis->fValid);
581
582	/*
583	* As long as we're using our private LDR reader implementation,
584	* we must unlink and ditch the modules we created.
585	*/
586	RTDBGAS hDbgAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
587	if (hDbgAs != NIL_RTDBGAS)
588	{
589	uint32_t iMod = RTDbgAsModuleCount(hDbgAs);
590	while (iMod-- > 0)
591	{
592	RTDBGMOD hMod = RTDbgAsModuleByIndex(hDbgAs, iMod);
593	if (hMod != NIL_RTDBGMOD)
594	{
595	if (RTDbgModGetTag(hMod) == DIG_WINNT_MOD_TAG)
596	{
597	int rc = RTDbgAsModuleUnlink(hDbgAs, hMod);
598	AssertRC(rc);
599	}
600	RTDbgModRelease(hMod);
601	}
602	}
603	RTDbgAsRelease(hDbgAs);
604	}
605
606	pThis->fValid = false;
607	}
608
609
610	/**
611	* @copydoc DBGFOSREG::pfnRefresh
612	*/
613	static DECLCALLBACK(int) dbgDiggerWinNtRefresh(PUVM pUVM, void *pvData)
614	{
615	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
616	NOREF(pThis);
617	Assert(pThis->fValid);
618
619	/*
620	* For now we'll flush and reload everything.
621	*/
622	dbgDiggerWinNtTerm(pUVM, pvData);
623
624	return dbgDiggerWinNtInit(pUVM, pvData);
625	}
626
627
628	/**
629	* @copydoc DBGFOSREG::pfnInit
630	*/
631	static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData)
632	{
633	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
634	Assert(!pThis->fValid);
635
636	union
637	{
638	uint8_t au8[0x2000];
639	RTUTF16 wsz[0x2000/2];
640	NTKUSERSHAREDDATA UserSharedData;
641	} u;
642	DBGFADDRESS Addr;
643	int rc;
644
645	/*
646	* Figure the NT version.
647	*/
648	DBGFR3AddrFromFlat(pUVM, &Addr, pThis->f32Bit ? NTKUSERSHAREDDATA_WINNT32 : NTKUSERSHAREDDATA_WINNT64);
649	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &Addr, &u, PAGE_SIZE);
650	if (RT_SUCCESS(rc))
651	{
652	pThis->NtProductType = u.UserSharedData.ProductTypeIsValid && u.UserSharedData.NtProductType <= kNtProductType_Server
653	? (NTPRODUCTTYPE)u.UserSharedData.NtProductType
654	: kNtProductType_Invalid;
655	pThis->NtMajorVersion = u.UserSharedData.NtMajorVersion;
656	pThis->NtMinorVersion = u.UserSharedData.NtMinorVersion;
657	}
658	else if (pThis->fNt31)
659	{
660	pThis->NtProductType = kNtProductType_WinNt;
661	pThis->NtMajorVersion = 3;
662	pThis->NtMinorVersion = 1;
663	}
664	else
665	{
666	Log(("DigWinNt: Error reading KUSER_SHARED_DATA: %Rrc\n", rc));
667	return rc;
668	}
669
670	/*
671	* Dig out the module chain.
672	*/
673	DBGFADDRESS AddrPrev = pThis->PsLoadedModuleListAddr;
674	Addr = pThis->KernelMteAddr;
675	do
676	{
677	/* Read the validate the MTE. */
678	NTMTE Mte;
679	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &Addr, &Mte, pThis->f32Bit ? sizeof(Mte.vX_32) : sizeof(Mte.vX_64));
680	if (RT_FAILURE(rc))
681	break;
682	if (WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Blink) != AddrPrev.FlatPtr)
683	{
684	Log(("DigWinNt: Bad Mte At %RGv - backpointer\n", Addr.FlatPtr));
685	break;
686	}
687	if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink)) )
688	{
689	Log(("DigWinNt: Bad Mte at %RGv - forward pointer\n", Addr.FlatPtr));
690	break;
691	}
692	if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)))
693	{
694	Log(("DigWinNt: Bad Mte at %RGv - BaseDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)));
695	break;
696	}
697	if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)))
698	{
699	Log(("DigWinNt: Bad Mte at %RGv - FullDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)));
700	break;
701	}
702	if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, DllBase)))
703	{
704	Log(("DigWinNt: Bad Mte at %RGv - DllBase=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, DllBase) ));
705	break;
706	}
707
708	uint32_t const cbImageMte = !pThis->fNt31 ? WINNT_UNION(pThis, &Mte, SizeOfImage) : 0;
709	if ( !pThis->fNt31
710	&& ( cbImageMte > _256M
711	\|\| WINNT_UNION(pThis, &Mte, EntryPoint) - WINNT_UNION(pThis, &Mte, DllBase) > cbImageMte) )
712	{
713	Log(("DigWinNt: Bad Mte at %RGv - EntryPoint=%llx SizeOfImage=%x DllBase=%llx\n",
714	Addr.FlatPtr, WINNT_UNION(pThis, &Mte, EntryPoint), cbImageMte, WINNT_UNION(pThis, &Mte, DllBase)));
715	break;
716	}
717
718	/* Read the full name. */
719	DBGFADDRESS AddrName;
720	DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, FullDllName.Buffer));
721	uint16_t cbName = WINNT_UNION(pThis, &Mte, FullDllName.Length);
722	if (cbName < sizeof(u))
723	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &AddrName, &u, cbName);
724	else
725	rc = VERR_OUT_OF_RANGE;
726	if (RT_FAILURE(rc))
727	{
728	DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer));
729	cbName = WINNT_UNION(pThis, &Mte, BaseDllName.Length);
730	if (cbName < sizeof(u))
731	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &AddrName, &u, cbName);
732	else
733	rc = VERR_OUT_OF_RANGE;
734	}
735	if (RT_SUCCESS(rc))
736	{
737	u.wsz[cbName / 2] = '\0';
738
739	char *pszFilename;
740	rc = RTUtf16ToUtf8(u.wsz, &pszFilename);
741	if (RT_SUCCESS(rc))
742	{
743	char szModName[128];
744	const char *pszModName = dbgDiggerWintNtFilenameToModuleName(pszFilename, szModName, sizeof(szModName));
745
746	/* Read the start of the PE image and pass it along to a worker. */
747	DBGFADDRESS ImageAddr;
748	DBGFR3AddrFromFlat(pUVM, &ImageAddr, WINNT_UNION(pThis, &Mte, DllBase));
749	dbgDiggerWinNtProcessImage(pThis, pUVM, pszModName, pszFilename, &ImageAddr, cbImageMte);
750	RTStrFree(pszFilename);
751	}
752	}
753
754	/* next */
755	AddrPrev = Addr;
756	DBGFR3AddrFromFlat(pUVM, &Addr, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink));
757	} while ( Addr.FlatPtr != pThis->KernelMteAddr.FlatPtr
758	&& Addr.FlatPtr != pThis->PsLoadedModuleListAddr.FlatPtr);
759
760	pThis->fValid = true;
761	return VINF_SUCCESS;
762	}
763
764
765	/**
766	* @copydoc DBGFOSREG::pfnProbe
767	*/
768	static DECLCALLBACK(bool) dbgDiggerWinNtProbe(PUVM pUVM, void *pvData)
769	{
770	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
771	DBGFADDRESS Addr;
772	union
773	{
774	uint8_t au8[8192];
775	uint16_t au16[8192/2];
776	uint32_t au32[8192/4];
777	IMAGE_DOS_HEADER MzHdr;
778	RTUTF16 wsz[8192/2];
779	X86DESC64GATE a32Gates[X86_XCPT_PF + 1];
780	X86DESC64GATE a64Gates[X86_XCPT_PF + 1];
781	} u;
782
783	union
784	{
785	NTMTE32 v32;
786	NTMTE64 v64;
787	} uMte, uMte2, uMte3;
788
789	/*
790	* NT only runs in protected or long mode.
791	*/
792	CPUMMODE const enmMode = DBGFR3CpuGetMode(pUVM, 0 /idCpu/);
793	if (enmMode != CPUMMODE_PROTECTED && enmMode != CPUMMODE_LONG)
794	return false;
795	bool const f64Bit = enmMode == CPUMMODE_LONG;
796	uint64_t const uStart = f64Bit ? UINT64_C(0xffff080000000000) : UINT32_C(0x80001000);
797	uint64_t const uEnd = f64Bit ? UINT64_C(0xffffffffffff0000) : UINT32_C(0xffff0000);
798
799	/*
800	* To approximately locate the kernel we examine the IDTR handlers.
801	*
802	* The exception/trap/fault handlers are all in NT kernel image, we pick
803	* KiPageFault here.
804	*/
805	uint64_t uIdtrBase = 0;
806	uint16_t uIdtrLimit = 0;
807	int rc = DBGFR3RegCpuQueryXdtr(pUVM, 0, DBGFREG_IDTR, &uIdtrBase, &uIdtrLimit);
808	AssertRCReturn(rc, false);
809
810	const uint16_t cbMinIdtr = (X86_XCPT_PF + 1) * (f64Bit ? sizeof(X86DESC64GATE) : sizeof(X86DESCGATE));
811	if (uIdtrLimit < cbMinIdtr)
812	return false;
813
814	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, uIdtrBase), &u, cbMinIdtr);
815	if (RT_FAILURE(rc))
816	return false;
817
818	uint64_t uKrnlStart = uStart;
819	uint64_t uKrnlEnd = uEnd;
820	if (f64Bit)
821	{
822	uint64_t uHandler = u.a64Gates[X86_XCPT_PF].u16OffsetLow
823	\| ((uint32_t)u.a64Gates[X86_XCPT_PF].u16OffsetHigh << 16)
824	\| ((uint64_t)u.a64Gates[X86_XCPT_PF].u32OffsetTop << 32);
825	if (uHandler < uStart \|\| uHandler > uEnd)
826	return false;
827	uKrnlStart = (uHandler & ~(uint64_t)_4M) - _512M;
828	uKrnlEnd = (uHandler + (uint64_t)_4M) & ~(uint64_t)_4M;
829	}
830	else
831	{
832	uint32_t uHandler = u.a32Gates[X86_XCPT_PF].u16OffsetLow
833	\| ((uint32_t)u.a64Gates[X86_XCPT_PF].u16OffsetHigh << 16);
834	if (uHandler < uStart \|\| uHandler > uEnd)
835	return false;
836	uKrnlStart = (uHandler & ~(uint64_t)_4M) - _64M;
837	uKrnlEnd = (uHandler + (uint64_t)_4M) & ~(uint64_t)_4M;
838	}
839
840	/*
841	* Look for the PAGELK section name that seems to be a part of all kernels.
842	* Then try find the module table entry for it. Since it's the first entry
843	* in the PsLoadedModuleList we can easily validate the list head and report
844	* success.
845	*
846	* Note! We ASSUME the section name is 8 byte aligned.
847	*/
848	DBGFADDRESS KernelAddr;
849	for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, uKrnlStart);
850	KernelAddr.FlatPtr < uKrnlEnd;
851	KernelAddr.FlatPtr += PAGE_SIZE)
852	{
853	bool fNt31 = false;
854	DBGFADDRESS const RetryAddress = KernelAddr;
855	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
856	8, "PAGELK\0", sizeof("PAGELK\0"), &KernelAddr);
857	if ( rc == VERR_DBGF_MEM_NOT_FOUND
858	&& enmMode != CPUMMODE_LONG)
859	{
860	/* NT3.1 didn't have a PAGELK section, so look for _TEXT instead. The
861	following VirtualSize is zero, so check for that too. */
862	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &RetryAddress, uEnd - RetryAddress.FlatPtr,
863	8, "_TEXT\0\0\0\0\0\0", sizeof("_TEXT\0\0\0\0\0\0"), &KernelAddr);
864	fNt31 = true;
865	}
866	if (RT_FAILURE(rc))
867	break;
868	DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & PAGE_OFFSET_MASK);
869
870	/* MZ + PE header. */
871	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, &KernelAddr, &u, sizeof(u));
872	if ( RT_SUCCESS(rc)
873	&& u.MzHdr.e_magic == IMAGE_DOS_SIGNATURE
874	&& !(u.MzHdr.e_lfanew & 0x7)
875	&& u.MzHdr.e_lfanew >= 0x080
876	&& u.MzHdr.e_lfanew <= 0x400) /* W8 is at 0x288*/
877	{
878	if (enmMode != CPUMMODE_LONG)
879	{
880	IMAGE_NT_HEADERS32 const pHdrs = (IMAGE_NT_HEADERS32 const )&u.au8[u.MzHdr.e_lfanew];
881	if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
882	&& pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_I386
883	&& pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
884	&& pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
885	&& (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE \| IMAGE_FILE_DLL)) == IMAGE_FILE_EXECUTABLE_IMAGE
886	&& pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
887	&& pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
888	)
889	{
890	/* Find the MTE. */
891	RT_ZERO(uMte);
892	uMte.v32.DllBase = KernelAddr.FlatPtr;
893	uMte.v32.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
894	uMte.v32.SizeOfImage = !fNt31 ? pHdrs->OptionalHeader.SizeOfImage : 0; /* NT 3.1 didn't set the size. */
895	DBGFADDRESS HitAddr;
896	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
897	4 /align/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
898	while (RT_SUCCESS(rc))
899	{
900	/* check the name. */
901	DBGFADDRESS MteAddr = HitAddr;
902	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE32, DllBase)),
903	&uMte2.v32, sizeof(uMte2.v32));
904	if ( RT_SUCCESS(rc)
905	&& uMte2.v32.DllBase == uMte.v32.DllBase
906	&& uMte2.v32.EntryPoint == uMte.v32.EntryPoint
907	&& uMte2.v32.SizeOfImage == uMte.v32.SizeOfImage
908	&& WINNT32_VALID_ADDRESS(uMte2.v32.InLoadOrderLinks.Flink)
909	&& WINNT32_VALID_ADDRESS(uMte2.v32.BaseDllName.Buffer)
910	&& WINNT32_VALID_ADDRESS(uMte2.v32.FullDllName.Buffer)
911	&& uMte2.v32.BaseDllName.Length <= 128
912	&& uMte2.v32.FullDllName.Length <= 260
913	)
914	{
915	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.BaseDllName.Buffer),
916	u.wsz, uMte2.v32.BaseDllName.Length);
917	u.wsz[uMte2.v32.BaseDllName.Length / 2] = '\0';
918	if ( RT_SUCCESS(rc)
919	&& ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
920	/* \|\| !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
921	)
922	)
923	{
924	rc = DBGFR3MemRead(pUVM, 0 /idCpu/,
925	DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.InLoadOrderLinks.Blink),
926	&uMte3.v32, RT_SIZEOFMEMB(NTMTE32, InLoadOrderLinks));
927	if ( RT_SUCCESS(rc)
928	&& uMte3.v32.InLoadOrderLinks.Flink == MteAddr.FlatPtr
929	&& WINNT32_VALID_ADDRESS(uMte3.v32.InLoadOrderLinks.Blink) )
930	{
931	Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
932	MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, Addr.FlatPtr));
933	pThis->KernelAddr = KernelAddr;
934	pThis->KernelMteAddr = MteAddr;
935	pThis->PsLoadedModuleListAddr = Addr;
936	pThis->f32Bit = true;
937	pThis->fNt31 = fNt31;
938	return true;
939	}
940	}
941	else if (RT_SUCCESS(rc))
942	{
943	Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
944	MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, u.wsz));
945	break; /* Not NT kernel */
946	}
947	}
948
949	/* next */
950	DBGFR3AddrAdd(&HitAddr, 4);
951	if (HitAddr.FlatPtr < uEnd)
952	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &HitAddr, uEnd - HitAddr.FlatPtr,
953	4 /align/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
954	else
955	rc = VERR_DBGF_MEM_NOT_FOUND;
956	}
957	}
958	}
959	else
960	{
961	IMAGE_NT_HEADERS64 const pHdrs = (IMAGE_NT_HEADERS64 const )&u.au8[u.MzHdr.e_lfanew];
962	if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
963	&& pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64
964	&& pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
965	&& pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
966	&& (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE \| IMAGE_FILE_DLL))
967	== IMAGE_FILE_EXECUTABLE_IMAGE
968	&& pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC
969	&& pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
970	)
971	{
972	/* Find the MTE. */
973	RT_ZERO(uMte.v64);
974	uMte.v64.DllBase = KernelAddr.FlatPtr;
975	uMte.v64.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
976	uMte.v64.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
977	DBGFADDRESS ScanAddr;
978	DBGFADDRESS HitAddr;
979	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &ScanAddr, uStart),
980	uEnd - uStart, 8 /align/, &uMte.v64.DllBase, 5 * sizeof(uint32_t), &HitAddr);
981	while (RT_SUCCESS(rc))
982	{
983	/* Read the start of the MTE and check some basic members. */
984	DBGFADDRESS MteAddr = HitAddr;
985	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE64, DllBase)),
986	&uMte2.v64, sizeof(uMte2.v64));
987	if ( RT_SUCCESS(rc)
988	&& uMte2.v64.DllBase == uMte.v64.DllBase
989	&& uMte2.v64.EntryPoint == uMte.v64.EntryPoint
990	&& uMte2.v64.SizeOfImage == uMte.v64.SizeOfImage
991	&& WINNT64_VALID_ADDRESS(uMte2.v64.InLoadOrderLinks.Flink)
992	&& WINNT64_VALID_ADDRESS(uMte2.v64.BaseDllName.Buffer)
993	&& WINNT64_VALID_ADDRESS(uMte2.v64.FullDllName.Buffer)
994	&& uMte2.v64.BaseDllName.Length <= 128
995	&& uMte2.v64.FullDllName.Length <= 260
996	)
997	{
998	/* Try read the base name and compare with known NT kernel names. */
999	rc = DBGFR3MemRead(pUVM, 0 /idCpu/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.BaseDllName.Buffer),
1000	u.wsz, uMte2.v64.BaseDllName.Length);
1001	u.wsz[uMte2.v64.BaseDllName.Length / 2] = '\0';
1002	if ( RT_SUCCESS(rc)
1003	&& ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
1004	/* \|\| !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
1005	)
1006	)
1007	{
1008	/* Read the link entry of the previous entry in the list and check that its
1009	forward pointer points at the MTE we've found. */
1010	rc = DBGFR3MemRead(pUVM, 0 /idCpu/,
1011	DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.InLoadOrderLinks.Blink),
1012	&uMte3.v64, RT_SIZEOFMEMB(NTMTE64, InLoadOrderLinks));
1013	if ( RT_SUCCESS(rc)
1014	&& uMte3.v64.InLoadOrderLinks.Flink == MteAddr.FlatPtr
1015	&& WINNT64_VALID_ADDRESS(uMte3.v64.InLoadOrderLinks.Blink) )
1016	{
1017	Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
1018	MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, Addr.FlatPtr));
1019	pThis->KernelAddr = KernelAddr;
1020	pThis->KernelMteAddr = MteAddr;
1021	pThis->PsLoadedModuleListAddr = Addr;
1022	pThis->f32Bit = false;
1023	pThis->fNt31 = false;
1024	return true;
1025	}
1026	}
1027	else if (RT_SUCCESS(rc))
1028	{
1029	Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
1030	MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, u.wsz));
1031	break; /* Not NT kernel */
1032	}
1033	}
1034
1035	/* next */
1036	DBGFR3AddrAdd(&HitAddr, 8);
1037	if (HitAddr.FlatPtr < uEnd)
1038	rc = DBGFR3MemScan(pUVM, 0 /idCpu/, &HitAddr, uEnd - HitAddr.FlatPtr,
1039	8 /align/, &uMte.v64.DllBase, 3 * sizeof(uint32_t), &HitAddr);
1040	else
1041	rc = VERR_DBGF_MEM_NOT_FOUND;
1042	}
1043	}
1044	}
1045	}
1046	}
1047	return false;
1048	}
1049
1050
1051	/**
1052	* @copydoc DBGFOSREG::pfnDestruct
1053	*/
1054	static DECLCALLBACK(void) dbgDiggerWinNtDestruct(PUVM pUVM, void *pvData)
1055	{
1056	RT_NOREF2(pUVM, pvData);
1057	}
1058
1059
1060	/**
1061	* @copydoc DBGFOSREG::pfnConstruct
1062	*/
1063	static DECLCALLBACK(int) dbgDiggerWinNtConstruct(PUVM pUVM, void *pvData)
1064	{
1065	RT_NOREF1(pUVM);
1066	PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
1067	pThis->fValid = false;
1068	pThis->f32Bit = false;
1069	pThis->enmVer = DBGDIGGERWINNTVER_UNKNOWN;
1070	return VINF_SUCCESS;
1071	}
1072
1073
1074	const DBGFOSREG g_DBGDiggerWinNt =
1075	{
1076	/* .u32Magic = */ DBGFOSREG_MAGIC,
1077	/* .fFlags = */ 0,
1078	/* .cbData = */ sizeof(DBGDIGGERWINNT),
1079	/* .szName = */ "WinNT",
1080	/* .pfnConstruct = */ dbgDiggerWinNtConstruct,
1081	/* .pfnDestruct = */ dbgDiggerWinNtDestruct,
1082	/* .pfnProbe = */ dbgDiggerWinNtProbe,
1083	/* .pfnInit = */ dbgDiggerWinNtInit,
1084	/* .pfnRefresh = */ dbgDiggerWinNtRefresh,
1085	/* .pfnTerm = */ dbgDiggerWinNtTerm,
1086	/* .pfnQueryVersion = */ dbgDiggerWinNtQueryVersion,
1087	/* .pfnQueryInterface = */ dbgDiggerWinNtQueryInterface,
1088	/* .pfnStackUnwindAssist = */ dbgDiggerWinNtStackUnwindAssist,
1089	/* .u32EndMagic = */ DBGFOSREG_MAGIC
1090	};
1091

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source: vbox/trunk/src/VBox/Debugger/DBGPlugInWinNt.cpp@ 73491

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