dbgmodcodeview.cpp@ 93115

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1	/* $Id: dbgmodcodeview.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* IPRT - Debug Module Reader For Microsoft CodeView and COFF.
4	*
5	* Based on the following documentation (plus guess work and googling):
6	*
7	* - "Tools Interface Standard (TIS) Formats Specification for Windows",
8	* dated February 1993, version 1.0.
9	*
10	* - "Visual C++ 5.0 Symbolic Debug Information Specification" chapter of
11	* SPECS.CHM from MSDN Library October 2001.
12	*
13	* - "High Level Languages Debug Table Documentation", aka HLLDBG.HTML, aka
14	* IBMHLL.HTML, last changed 1996-07-08.
15	*
16	* Testcases using RTLdrFlt:
17	* - VBoxPcBios.sym at 0xf0000.
18	* - NT4 kernel PE image (coff syms).
19	*/
20
21	/*
22	* Copyright (C) 2013-2022 Oracle Corporation
23	*
24	* This file is part of VirtualBox Open Source Edition (OSE), as
25	* available from http://www.virtualbox.org. This file is free software;
26	* you can redistribute it and/or modify it under the terms of the GNU
27	* General Public License (GPL) as published by the Free Software
28	* Foundation, in version 2 as it comes in the "COPYING" file of the
29	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
30	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
31	*
32	* The contents of this file may alternatively be used under the terms
33	* of the Common Development and Distribution License Version 1.0
34	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
35	* VirtualBox OSE distribution, in which case the provisions of the
36	* CDDL are applicable instead of those of the GPL.
37	*
38	* You may elect to license modified versions of this file under the
39	* terms and conditions of either the GPL or the CDDL or both.
40	*/
41
42
43	/*********************************************************************************************************************************
44	* Header Files *
45	*********************************************************************************************************************************/
46	#define LOG_GROUP RTLOGGROUP_DBG
47	#include <iprt/dbg.h>
48	#include "internal/iprt.h"
49
50	#include <iprt/alloca.h>
51	#include <iprt/asm.h>
52	#include <iprt/assert.h>
53	#include <iprt/err.h>
54	#include <iprt/file.h>
55	#include <iprt/latin1.h>
56	#include <iprt/log.h>
57	#include <iprt/mem.h>
58	#include <iprt/param.h>
59	#include <iprt/path.h>
60	#include <iprt/sort.h>
61	#include <iprt/string.h>
62	#include <iprt/strcache.h>
63	#include "internal/dbgmod.h"
64	#include "internal/magics.h"
65
66	#include <iprt/formats/codeview.h>
67	#include <iprt/formats/pecoff.h>
68
69
70	/*********************************************************************************************************************************
71	* Structures and Typedefs *
72	*********************************************************************************************************************************/
73	/**
74	* File type.
75	*/
76	typedef enum RTCVFILETYPE
77	{
78	RTCVFILETYPE_INVALID = 0,
79	/** Executable image. */
80	RTCVFILETYPE_IMAGE,
81	/** A DBG-file with a IMAGE_SEPARATE_DEBUG_HEADER. */
82	RTCVFILETYPE_DBG,
83	/** A PDB file. */
84	RTCVFILETYPE_PDB,
85	/** Some other kind of file with CV at the end. */
86	RTCVFILETYPE_OTHER_AT_END,
87	/** The end of the valid values. */
88	RTCVFILETYPE_END,
89	/** Type blowup. */
90	RTCVFILETYPE_32BIT_HACK = 0x7fffffff
91	} RTCVFILETYPE;
92
93
94	/**
95	* CodeView debug info reader instance.
96	*/
97	typedef struct RTDBGMODCV
98	{
99	/** Using a container for managing the debug info. */
100	RTDBGMOD hCnt;
101
102	/** @name Codeview details
103	* @{ */
104	/** The code view magic (used as format indicator). */
105	uint32_t u32CvMagic;
106	/** The offset of the CV debug info in the file. */
107	uint32_t offBase;
108	/** The size of the CV debug info. */
109	uint32_t cbDbgInfo;
110	/** The offset of the subsection directory (relative to offBase). */
111	uint32_t offDir;
112	/** @} */
113
114	/** @name COFF details.
115	* @{ */
116	/** Offset of the COFF header. */
117	uint32_t offCoffDbgInfo;
118	/** The size of the COFF debug info. */
119	uint32_t cbCoffDbgInfo;
120	/** The COFF debug info header. */
121	IMAGE_COFF_SYMBOLS_HEADER CoffHdr;
122	/** @} */
123
124	/** The file type. */
125	RTCVFILETYPE enmType;
126	/** The file handle (if external). */
127	RTFILE hFile;
128	/** Pointer to the module (no reference retained). */
129	PRTDBGMODINT pMod;
130
131	/** The image size, if we know it. This is 0 if we don't know it. */
132	uint32_t cbImage;
133
134	/** Indicates that we've loaded segments intot he container already. */
135	bool fHaveLoadedSegments;
136	/** Alternative address translation method for DOS frames. */
137	bool fHaveDosFrames;
138
139	/** @name Codeview Parsing state.
140	* @{ */
141	/** Number of directory entries. */
142	uint32_t cDirEnts;
143	/** The directory (converted to 32-bit). */
144	PRTCVDIRENT32 paDirEnts;
145	/** Current debugging style when parsing modules. */
146	uint16_t uCurStyle;
147	/** Current debugging style version (HLL only). */
148	uint16_t uCurStyleVer;
149
150	/** The segment map (if present). */
151	PRTCVSEGMAP pSegMap;
152	/** Segment names. */
153	char *pszzSegNames;
154	/** The size of the segment names. */
155	uint32_t cbSegNames;
156
157	/** Size of the block pchSrcStrings points to. */
158	size_t cbSrcStrings;
159	/** Buffer space allocated for the source string table. */
160	size_t cbSrcStringsAlloc;
161	/** Copy of the last CV8 source string table. */
162	char *pchSrcStrings;
163
164	/** The size of the current source information table. */
165	size_t cbSrcInfo;
166	/** Buffer space allocated for the source information table. */
167	size_t cbSrcInfoAlloc;
168	/** Copy of the last CV8 source information table. */
169	uint8_t *pbSrcInfo;
170
171	/** @} */
172
173	} RTDBGMODCV;
174	/** Pointer to a codeview debug info reader instance. */
175	typedef RTDBGMODCV *PRTDBGMODCV;
176	/** Pointer to a const codeview debug info reader instance. */
177	typedef RTDBGMODCV *PCRTDBGMODCV;
178
179
180
181	/**
182	* Subsection callback.
183	*
184	* @returns IPRT status code.
185	* @param pThis The CodeView debug info reader instance.
186	* @param pvSubSect Pointer to the subsection data.
187	* @param cbSubSect The size of the subsection data.
188	* @param pDirEnt The directory entry.
189	*/
190	typedef DECLCALLBACKTYPE(int, FNDBGMODCVSUBSECTCALLBACK,(PRTDBGMODCV pThis, void const *pvSubSect, size_t cbSubSect,
191	PCRTCVDIRENT32 pDirEnt));
192	/** Pointer to a subsection callback. */
193	typedef FNDBGMODCVSUBSECTCALLBACK *PFNDBGMODCVSUBSECTCALLBACK;
194
195
196
197	/*********************************************************************************************************************************
198	* Defined Constants And Macros *
199	*********************************************************************************************************************************/
200	/** Light weight assert + return w/ fixed status code. */
201	#define RTDBGMODCV_CHECK_RET_BF(a_Expr, a_LogArgs) \
202	do { \
203	if (!(a_Expr)) \
204	{ \
205	Log(("RTDbgCv: Check failed on line %d: " #a_Expr "\n", __LINE__)); \
206	Log(a_LogArgs); \
207	/AssertFailed();/ \
208	return VERR_CV_BAD_FORMAT; \
209	} \
210	} while (0)
211
212
213	/** Light weight assert + return w/ fixed status code. */
214	#define RTDBGMODCV_CHECK_NOMSG_RET_BF(a_Expr) \
215	do { \
216	if (!(a_Expr)) \
217	{ \
218	Log(("RTDbgCv: Check failed on line %d: " #a_Expr "\n", __LINE__)); \
219	/AssertFailed();/ \
220	return VERR_CV_BAD_FORMAT; \
221	} \
222	} while (0)
223
224
225
226
227
228	/**
229	* Reads CodeView information.
230	*
231	* @returns IPRT status code.
232	* @param pThis The CodeView reader instance.
233	* @param off The offset to start reading at, relative to the
234	* CodeView base header.
235	* @param pvBuf The buffer to read into.
236	* @param cb How many bytes to read.
237	*/
238	static int rtDbgModCvReadAt(PRTDBGMODCV pThis, uint32_t off, void *pvBuf, size_t cb)
239	{
240	int rc;
241	if (pThis->hFile == NIL_RTFILE)
242	rc = pThis->pMod->pImgVt->pfnReadAt(pThis->pMod, UINT32_MAX, off + pThis->offBase, pvBuf, cb);
243	else
244	rc = RTFileReadAt(pThis->hFile, off + pThis->offBase, pvBuf, cb, NULL);
245	return rc;
246	}
247
248
249	/**
250	* Reads CodeView information into an allocated buffer.
251	*
252	* @returns IPRT status code.
253	* @param pThis The CodeView reader instance.
254	* @param off The offset to start reading at, relative to the
255	* CodeView base header.
256	* @param ppvBuf Where to return the allocated buffer on success.
257	* @param cb How many bytes to read.
258	*/
259	static int rtDbgModCvReadAtAlloc(PRTDBGMODCV pThis, uint32_t off, void **ppvBuf, size_t cb)
260	{
261	int rc;
262	void pvBuf = ppvBuf = RTMemAlloc(cb);
263	if (pvBuf)
264	{
265	if (pThis->hFile == NIL_RTFILE)
266	rc = pThis->pMod->pImgVt->pfnReadAt(pThis->pMod, UINT32_MAX, off + pThis->offBase, pvBuf, cb);
267	else
268	rc = RTFileReadAt(pThis->hFile, off + pThis->offBase, pvBuf, cb, NULL);
269	if (RT_SUCCESS(rc))
270	return VINF_SUCCESS;
271
272	RTMemFree(pvBuf);
273	*ppvBuf = NULL;
274	}
275	else
276	rc = VERR_NO_MEMORY;
277	return rc;
278	}
279
280
281	#ifdef LOG_ENABLED
282	/**
283	* Gets a name string for a subsection type.
284	*
285	* @returns Section name (read only).
286	* @param uSubSectType The subsection type.
287	*/
288	static const char *rtDbgModCvGetSubSectionName(uint16_t uSubSectType)
289	{
290	switch (uSubSectType)
291	{
292	case kCvSst_OldModule: return "sstOldModule";
293	case kCvSst_OldPublic: return "sstOldPublic";
294	case kCvSst_OldTypes: return "sstOldTypes";
295	case kCvSst_OldSymbols: return "sstOldSymbols";
296	case kCvSst_OldSrcLines: return "sstOldSrcLines";
297	case kCvSst_OldLibraries: return "sstOldLibraries";
298	case kCvSst_OldImports: return "sstOldImports";
299	case kCvSst_OldCompacted: return "sstOldCompacted";
300	case kCvSst_OldSrcLnSeg: return "sstOldSrcLnSeg";
301	case kCvSst_OldSrcLines3: return "sstOldSrcLines3";
302
303	case kCvSst_Module: return "sstModule";
304	case kCvSst_Types: return "sstTypes";
305	case kCvSst_Public: return "sstPublic";
306	case kCvSst_PublicSym: return "sstPublicSym";
307	case kCvSst_Symbols: return "sstSymbols";
308	case kCvSst_AlignSym: return "sstAlignSym";
309	case kCvSst_SrcLnSeg: return "sstSrcLnSeg";
310	case kCvSst_SrcModule: return "sstSrcModule";
311	case kCvSst_Libraries: return "sstLibraries";
312	case kCvSst_GlobalSym: return "sstGlobalSym";
313	case kCvSst_GlobalPub: return "sstGlobalPub";
314	case kCvSst_GlobalTypes: return "sstGlobalTypes";
315	case kCvSst_MPC: return "sstMPC";
316	case kCvSst_SegMap: return "sstSegMap";
317	case kCvSst_SegName: return "sstSegName";
318	case kCvSst_PreComp: return "sstPreComp";
319	case kCvSst_PreCompMap: return "sstPreCompMap";
320	case kCvSst_OffsetMap16: return "sstOffsetMap16";
321	case kCvSst_OffsetMap32: return "sstOffsetMap32";
322	case kCvSst_FileIndex: return "sstFileIndex";
323	case kCvSst_StaticSym: return "sstStaticSym";
324	}
325	static char s_sz[32];
326	RTStrPrintf(s_sz, sizeof(s_sz), "Unknown%#x", uSubSectType);
327	return s_sz;
328	}
329	#endif /* LOG_ENABLED */
330
331
332	#ifdef LOG_ENABLED
333	/**
334	* Gets a name string for a symbol type.
335	*
336	* @returns symbol type name (read only).
337	* @param enmSymType The symbol type to name.
338	*/
339	static const char *rtDbgModCvSsSymTypeName(RTCVSYMTYPE enmSymType)
340	{
341	switch (enmSymType)
342	{
343	# define CASE_RET_STR(Name) case kCvSymType_##Name: return #Name;
344	CASE_RET_STR(Compile);
345	CASE_RET_STR(Register);
346	CASE_RET_STR(Constant);
347	CASE_RET_STR(UDT);
348	CASE_RET_STR(SSearch);
349	CASE_RET_STR(End);
350	CASE_RET_STR(Skip);
351	CASE_RET_STR(CVReserve);
352	CASE_RET_STR(ObjName);
353	CASE_RET_STR(EndArg);
354	CASE_RET_STR(CobolUDT);
355	CASE_RET_STR(ManyReg);
356	CASE_RET_STR(Return);
357	CASE_RET_STR(EntryThis);
358	CASE_RET_STR(BpRel16);
359	CASE_RET_STR(LData16);
360	CASE_RET_STR(GData16);
361	CASE_RET_STR(Pub16);
362	CASE_RET_STR(LProc16);
363	CASE_RET_STR(GProc16);
364	CASE_RET_STR(Thunk16);
365	CASE_RET_STR(BLock16);
366	CASE_RET_STR(With16);
367	CASE_RET_STR(Label16);
368	CASE_RET_STR(CExModel16);
369	CASE_RET_STR(VftPath16);
370	CASE_RET_STR(RegRel16);
371	CASE_RET_STR(BpRel32);
372	CASE_RET_STR(LData32);
373	CASE_RET_STR(GData32);
374	CASE_RET_STR(Pub32);
375	CASE_RET_STR(LProc32);
376	CASE_RET_STR(GProc32);
377	CASE_RET_STR(Thunk32);
378	CASE_RET_STR(Block32);
379	CASE_RET_STR(With32);
380	CASE_RET_STR(Label32);
381	CASE_RET_STR(CExModel32);
382	CASE_RET_STR(VftPath32);
383	CASE_RET_STR(RegRel32);
384	CASE_RET_STR(LThread32);
385	CASE_RET_STR(GThread32);
386	CASE_RET_STR(LProcMips);
387	CASE_RET_STR(GProcMips);
388	CASE_RET_STR(ProcRef);
389	CASE_RET_STR(DataRef);
390	CASE_RET_STR(Align);
391	CASE_RET_STR(LProcRef);
392	CASE_RET_STR(V2_Register);
393	CASE_RET_STR(V2_Constant);
394	CASE_RET_STR(V2_Udt);
395	CASE_RET_STR(V2_CobolUdt);
396	CASE_RET_STR(V2_ManyReg);
397	CASE_RET_STR(V2_BpRel);
398	CASE_RET_STR(V2_LData);
399	CASE_RET_STR(V2_GData);
400	CASE_RET_STR(V2_Pub);
401	CASE_RET_STR(V2_LProc);
402	CASE_RET_STR(V2_GProc);
403	CASE_RET_STR(V2_VftTable);
404	CASE_RET_STR(V2_RegRel);
405	CASE_RET_STR(V2_LThread);
406	CASE_RET_STR(V2_GThread);
407	CASE_RET_STR(V2_Unknown_1010);
408	CASE_RET_STR(V2_Unknown_1011);
409	CASE_RET_STR(V2_FrameInfo);
410	CASE_RET_STR(V2_Compliand);
411	CASE_RET_STR(V3_Compliand);
412	CASE_RET_STR(V3_Thunk);
413	CASE_RET_STR(V3_Block);
414	CASE_RET_STR(V3_Unknown_1104);
415	CASE_RET_STR(V3_Label);
416	CASE_RET_STR(V3_Register);
417	CASE_RET_STR(V3_Constant);
418	CASE_RET_STR(V3_Udt);
419	CASE_RET_STR(V3_Unknown_1109);
420	CASE_RET_STR(V3_Unknown_110a);
421	CASE_RET_STR(V3_BpRel);
422	CASE_RET_STR(V3_LData);
423	CASE_RET_STR(V3_GData);
424	CASE_RET_STR(V3_Pub);
425	CASE_RET_STR(V3_LProc);
426	CASE_RET_STR(V3_GProc);
427	CASE_RET_STR(V3_RegRel);
428	CASE_RET_STR(V3_LThread);
429	CASE_RET_STR(V3_GThread);
430	CASE_RET_STR(V3_Unknown_1114);
431	CASE_RET_STR(V3_Unknown_1115);
432	CASE_RET_STR(V3_MSTool);
433	CASE_RET_STR(V3_PubFunc1);
434	CASE_RET_STR(V3_PubFunc2);
435	CASE_RET_STR(V3_SectInfo);
436	CASE_RET_STR(V3_SubSectInfo);
437	CASE_RET_STR(V3_Entrypoint);
438	CASE_RET_STR(V3_Unknown_1139);
439	CASE_RET_STR(V3_SecuCookie);
440	CASE_RET_STR(V3_Unknown_113b);
441	CASE_RET_STR(V3_MsToolInfo);
442	CASE_RET_STR(V3_MsToolEnv);
443	CASE_RET_STR(VS2013_Local);
444	CASE_RET_STR(VS2013_FpOff);
445	CASE_RET_STR(VS2013_LProc32);
446	CASE_RET_STR(VS2013_GProc32);
447	#undef CASE_RET_STR
448	case kCvSymType_EndOfValues: break;
449	}
450	return "<unknown type>";
451	}
452	#endif /* LOG_ENABLED */
453
454
455	/**
456	* Adds a string to the g_hDbgModStrCache after sanitizing it.
457	*
458	* IPRT only deals with UTF-8 strings, so the string will be forced to UTF-8
459	* encoding. Also, codeview generally have length prefixed
460	*
461	* @returns String cached copy of the string.
462	* @param pch The string to copy to the cache.
463	* @param cch The length of the string. RTSTR_MAX if zero
464	* terminated.
465	*/
466	static const char rtDbgModCvAddSanitizedStringToCache(const char pch, size_t cch)
467	{
468	/*
469	* If the string is valid UTF-8 and or the right length, we're good.
470	* This is usually the case.
471	*/
472	const char *pszRet;
473	int rc;
474	if (cch != RTSTR_MAX)
475	rc = RTStrValidateEncodingEx(pch, cch, RTSTR_VALIDATE_ENCODING_EXACT_LENGTH);
476	else
477	rc = RTStrValidateEncodingEx(pch, cch, 0);
478	if (RT_SUCCESS(rc))
479	pszRet = RTStrCacheEnterN(g_hDbgModStrCache, pch, cch);
480	else
481	{
482	/*
483	* Need to sanitize the string, so make a copy of it.
484	*/
485	char pszCopy = (char )RTMemDupEx(pch, cch, 1);
486	AssertPtrReturn(pszCopy, NULL);
487
488	/* Deal with anyembedded zero chars. */
489	char *psz = RTStrEnd(pszCopy, cch);
490	while (psz)
491	{
492	*psz = '_';
493	psz = RTStrEnd(psz, cch - (psz - pszCopy));
494	}
495
496	/* Force valid UTF-8 encoding. */
497	RTStrPurgeEncoding(pszCopy);
498	Assert(strlen(pszCopy) == cch);
499
500	/* Enter it into the cache and free the temp copy. */
501	pszRet = RTStrCacheEnterN(g_hDbgModStrCache, pszCopy, cch);
502	RTMemFree(pszCopy);
503	}
504	return pszRet;
505	}
506
507
508	/**
509	* Translates a codeview segment and offset into our segment layout.
510	*
511	* @returns
512	* @param pThis .
513	* @param piSeg .
514	* @param poff .
515	*/
516	DECLINLINE(int) rtDbgModCvAdjustSegAndOffset(PRTDBGMODCV pThis, uint32_t piSeg, uint64_t poff)
517	{
518	uint32_t iSeg = *piSeg;
519	if (iSeg == 0)
520	iSeg = RTDBGSEGIDX_ABS;
521	else if (pThis->pSegMap)
522	{
523	if (pThis->fHaveDosFrames)
524	{
525	if ( iSeg > pThis->pSegMap->Hdr.cSegs
526	\|\| iSeg == 0)
527	return VERR_CV_BAD_FORMAT;
528	if (*poff <= pThis->pSegMap->aDescs[iSeg - 1].cb + pThis->pSegMap->aDescs[iSeg - 1].off)
529	*poff -= pThis->pSegMap->aDescs[iSeg - 1].off;
530	else
531	{
532	/* Workaround for VGABIOS where _DATA symbols like vgafont8 are
533	reported in the VGAROM segment. */
534	uint64_t uAddrSym = *poff + ((uint32_t)pThis->pSegMap->aDescs[iSeg - 1].iFrame << 4);
535	uint16_t j = pThis->pSegMap->Hdr.cSegs;
536	while (j-- > 0)
537	{
538	uint64_t uAddrFirst = (uint64_t)pThis->pSegMap->aDescs[j].off
539	+ ((uint32_t)pThis->pSegMap->aDescs[j].iFrame << 4);
540	if (uAddrSym - uAddrFirst < pThis->pSegMap->aDescs[j].cb)
541	{
542	Log(("CV addr fix: %04x:%08x -> %04x:%08x\n", iSeg, *poff, j + 1, uAddrSym - uAddrFirst));
543	*poff = uAddrSym - uAddrFirst;
544	iSeg = j + 1;
545	break;
546	}
547	}
548	if (j == UINT16_MAX)
549	return VERR_CV_BAD_FORMAT;
550	}
551	}
552	else
553	{
554	if ( iSeg > pThis->pSegMap->Hdr.cSegs
555	\|\| iSeg == 0
556	\|\| *poff > pThis->pSegMap->aDescs[iSeg - 1].cb)
557	return VERR_CV_BAD_FORMAT;
558	*poff += pThis->pSegMap->aDescs[iSeg - 1].off;
559	}
560	if (pThis->pSegMap->aDescs[iSeg - 1].fFlags & RTCVSEGMAPDESC_F_ABS)
561	iSeg = RTDBGSEGIDX_ABS;
562	else
563	iSeg = pThis->pSegMap->aDescs[iSeg - 1].iGroup;
564	}
565	*piSeg = iSeg;
566	return VINF_SUCCESS;
567	}
568
569
570	/**
571	* Adds a symbol to the container.
572	*
573	* @returns IPRT status code
574	* @param pThis The CodeView debug info reader instance.
575	* @param iSeg Segment number.
576	* @param off Offset into the segment
577	* @param pchName The symbol name (not necessarily terminated).
578	* @param cchName The symbol name length.
579	* @param fFlags Flags reserved for future exploits, MBZ.
580	* @param cbSym Symbol size, 0 if not available.
581	*/
582	static int rtDbgModCvAddSymbol(PRTDBGMODCV pThis, uint32_t iSeg, uint64_t off, const char *pchName,
583	uint32_t cchName, uint32_t fFlags, uint32_t cbSym)
584	{
585	RT_NOREF_PV(fFlags);
586	const char *pszName = rtDbgModCvAddSanitizedStringToCache(pchName, cchName);
587	int rc;
588	if (pszName)
589	{
590	#if 1
591	Log2(("CV Sym: %04x:%08x %.*s\n", iSeg, off, cchName, pchName));
592	rc = rtDbgModCvAdjustSegAndOffset(pThis, &iSeg, &off);
593	if (RT_SUCCESS(rc))
594	{
595	rc = RTDbgModSymbolAdd(pThis->hCnt, pszName, iSeg, off, cbSym, RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT, NULL);
596
597	/* Simple duplicate symbol mangling, just to get more details. */
598	if (rc == VERR_DBG_DUPLICATE_SYMBOL && cchName < _2K)
599	{
600	char szTmpName[_2K + 96];
601	memcpy(szTmpName, pszName, cchName);
602	szTmpName[cchName] = '_';
603	for (uint32_t i = 1; i < 32; i++)
604	{
605	RTStrFormatU32(&szTmpName[cchName + 1], 80, i, 10, 0, 0, 0);
606	rc = RTDbgModSymbolAdd(pThis->hCnt, szTmpName, iSeg, off, cbSym, 0 /fFlags/, NULL);
607	if (rc != VERR_DBG_DUPLICATE_SYMBOL)
608	break;
609	}
610
611	}
612	else if (rc == VERR_DBG_ADDRESS_CONFLICT && cbSym)
613	rc = RTDbgModSymbolAdd(pThis->hCnt, pszName, iSeg, off, cbSym,
614	RTDBGSYMBOLADD_F_REPLACE_SAME_ADDR \| RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT, NULL);
615
616	Log(("Symbol: %04x:%08x %.*s [%Rrc]\n", iSeg, off, cchName, pchName, rc));
617	if (rc == VERR_DBG_ADDRESS_CONFLICT \|\| rc == VERR_DBG_DUPLICATE_SYMBOL)
618	rc = VINF_SUCCESS;
619	}
620	else
621	Log(("Invalid segment index/offset %#06x:%08x for symbol %.*s\n", iSeg, off, cchName, pchName));
622
623	#else
624	Log(("Symbol: %04x:%08x %.*s\n", iSeg, off, cchName, pchName));
625	rc = VINF_SUCCESS;
626	#endif
627	RTStrCacheRelease(g_hDbgModStrCache, pszName);
628	}
629	else
630	rc = VERR_NO_STR_MEMORY;
631	return rc;
632	}
633
634
635	/**
636	* Validates the a zero terminated string.
637	*
638	* @returns String length if valid, UINT16_MAX if invalid.
639	* @param pszString The string to validate.
640	* @param pvRec The pointer to the record containing the string.
641	* @param cbRec The record length.
642	*/
643	static uint16_t rtDbgModCvValidateZeroString(const char pszString, void const pvRec, uint16_t cbRec)
644	{
645	size_t offStrMember = (uintptr_t)pszString - (uintptr_t)pvRec;
646	AssertReturn(offStrMember < _1K, UINT16_MAX);
647	AssertReturn(offStrMember <= cbRec, UINT16_MAX);
648	cbRec -= (uint16_t)offStrMember;
649
650	const char *pchEnd = RTStrEnd(pszString, cbRec);
651	AssertReturn(pchEnd, UINT16_MAX);
652
653	int rc = RTStrValidateEncoding(pszString);
654	AssertRCReturn(rc, UINT16_MAX);
655
656	return (uint16_t)(pchEnd - pszString);
657	}
658
659
660	/**
661	* Parses a CV4 symbol table, adding symbols to the container.
662	*
663	* @returns IPRT status code
664	* @param pThis The CodeView debug info reader instance.
665	* @param pvSymTab The symbol table.
666	* @param cbSymTab The size of the symbol table.
667	* @param fFlags Flags reserved for future exploits, MBZ.
668	*/
669	static int rtDbgModCvSsProcessV4PlusSymTab(PRTDBGMODCV pThis, void const *pvSymTab, size_t cbSymTab, uint32_t fFlags)
670	{
671	int rc = VINF_SUCCESS;
672	RTCPTRUNION uCursor;
673	uCursor.pv = pvSymTab;
674
675	RT_NOREF_PV(fFlags);
676
677	while (cbSymTab > 0 && RT_SUCCESS(rc))
678	{
679	uint8_t const * const pbRecStart = uCursor.pu8;
680	uint16_t cbRec = *uCursor.pu16++;
681	if (cbRec >= 2)
682	{
683	uint16_t uSymType = *uCursor.pu16++;
684
685	Log3((" %p: uSymType=%#06x LB %#x %s\n",
686	pbRecStart - (uint8_t *)pvSymTab, uSymType, cbRec, rtDbgModCvSsSymTypeName((RTCVSYMTYPE)uSymType)));
687	RTDBGMODCV_CHECK_RET_BF(cbRec >= 2 && cbRec <= cbSymTab, ("cbRec=%#x cbSymTab=%#x\n", cbRec, cbSymTab));
688
689	switch (uSymType)
690	{
691	case kCvSymType_LData16:
692	case kCvSymType_GData16:
693	case kCvSymType_Pub16:
694	{
695	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec > 2 + 2+2+2+1);
696	uint16_t off = *uCursor.pu16++;
697	uint16_t iSeg = *uCursor.pu16++;
698	/uint16_t iType =/ *uCursor.pu16++;
699	uint8_t cchName = *uCursor.pu8++;
700	RTDBGMODCV_CHECK_NOMSG_RET_BF(cchName > 0);
701	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= 2 + 2+2+2+1 + cchName);
702
703	rc = rtDbgModCvAddSymbol(pThis, iSeg, off, uCursor.pch, cchName, 0, 0);
704	break;
705	}
706
707	case kCvSymType_LData32:
708	case kCvSymType_GData32:
709	case kCvSymType_Pub32:
710	{
711	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec > 2 + 4+2+2+1);
712	uint32_t off = *uCursor.pu32++;
713	uint16_t iSeg = *uCursor.pu16++;
714	/uint16_t iType =/ *uCursor.pu16++;
715	uint8_t cchName = *uCursor.pu8++;
716	RTDBGMODCV_CHECK_NOMSG_RET_BF(cchName > 0);
717	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= 2 + 4+2+2+1 + cchName);
718
719	rc = rtDbgModCvAddSymbol(pThis, iSeg, off, uCursor.pch, cchName, 0, 0);
720	break;
721	}
722
723	case kCvSymType_LProc16:
724	case kCvSymType_GProc16:
725	{
726	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec > 2 + 4+4+4+2+2+2+2+2+2+1+1);
727	/uint32_t uParent =/ *uCursor.pu32++;
728	/uint32_t uEnd =/ *uCursor.pu32++;
729	/uint32_t uNext =/ *uCursor.pu32++;
730	uint16_t cbProc = *uCursor.pu16++;
731	/uint16_t offDebugStart =/ *uCursor.pu16++;
732	/uint16_t offDebugEnd =/ *uCursor.pu16++;
733	uint16_t off = *uCursor.pu16++;
734	uint16_t iSeg = *uCursor.pu16++;
735	/uint16_t iProcType =/ *uCursor.pu16++;
736	/uint8_t fbType =/ *uCursor.pu8++;
737	uint8_t cchName = *uCursor.pu8++;
738	RTDBGMODCV_CHECK_NOMSG_RET_BF(cchName > 0);
739	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= 2 + 4+4+4+2+2+2+2+2+2+1+1 + cchName);
740
741	rc = rtDbgModCvAddSymbol(pThis, iSeg, off, uCursor.pch, cchName, 0, cbProc);
742	break;
743	}
744
745	case kCvSymType_LProc32:
746	case kCvSymType_GProc32:
747	{
748	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec > 2 + 4+4+4+4+4+4+4+2+2+1+1);
749	/uint32_t uParent =/ *uCursor.pu32++;
750	/uint32_t uEnd =/ *uCursor.pu32++;
751	/uint32_t uNext =/ *uCursor.pu32++;
752	/uint32_t cbProc =/ *uCursor.pu32++;
753	/uint32_t offDebugStart =/ *uCursor.pu32++;
754	/uint32_t offDebugEnd =/ *uCursor.pu32++;
755	uint32_t off = *uCursor.pu32++;
756	uint16_t iSeg = *uCursor.pu16++;
757	/uint16_t iProcType =/ *uCursor.pu16++;
758	/uint8_t fbType =/ *uCursor.pu8++;
759	uint8_t cchName = *uCursor.pu8++;
760	RTDBGMODCV_CHECK_NOMSG_RET_BF(cchName > 0);
761	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= 2 + 4+4+4+4+4+4+4+2+2+1+1 + cchName);
762
763	rc = rtDbgModCvAddSymbol(pThis, iSeg, off, uCursor.pch, cchName, 0, 0);
764	break;
765	}
766
767	case kCvSymType_V3_Label:
768	{
769	PCRTCVSYMV3LABEL pLabel = (PCRTCVSYMV3LABEL)uCursor.pv;
770	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= sizeof(*pLabel));
771	uint16_t cchName = rtDbgModCvValidateZeroString(pLabel->szName, pLabel, cbRec);
772	if (cchName != UINT16_MAX && cchName > 0)
773	rc = rtDbgModCvAddSymbol(pThis, pLabel->iSection, pLabel->offSection, pLabel->szName, cchName, 0, 0);
774	else
775	Log3((" cchName=%#x sec:off=%#x:%#x %.*Rhxs\n",
776	cchName, pLabel->iSection, pLabel->offSection, cbRec, pLabel));
777	break;
778	}
779
780	case kCvSymType_V3_LData:
781	case kCvSymType_V3_GData:
782	case kCvSymType_V3_Pub:
783	{
784	PCRTCVSYMV3TYPEDNAME pData = (PCRTCVSYMV3TYPEDNAME)uCursor.pv;
785	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= sizeof(*pData));
786	uint16_t cchName = rtDbgModCvValidateZeroString(pData->szName, pData, cbRec);
787	if (cchName != UINT16_MAX && cchName > 0)
788	rc = rtDbgModCvAddSymbol(pThis, pData->iSection, pData->offSection, pData->szName, cchName, 0, 0);
789	else
790	Log3((" cchName=%#x sec:off=%#x:%#x idType=%#x %.*Rhxs\n",
791	cchName, pData->iSection, pData->offSection, pData->idType, cbRec, pData));
792	break;
793	}
794
795	case kCvSymType_V3_LProc:
796	case kCvSymType_V3_GProc:
797	{
798	PCRTCVSYMV3PROC pProc = (PCRTCVSYMV3PROC)uCursor.pv;
799	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbRec >= sizeof(*pProc));
800	uint16_t cchName = rtDbgModCvValidateZeroString(pProc->szName, pProc, cbRec);
801	if (cchName != UINT16_MAX && cchName > 0)
802	rc = rtDbgModCvAddSymbol(pThis, pProc->iSection, pProc->offSection, pProc->szName, cchName,
803	0, pProc->cbProc);
804	else
805	Log3((" cchName=%#x sec:off=%#x:%#x LB %#x\n",
806	cchName, pProc->iSection, pProc->offSection, pProc->cbProc));
807	break;
808	}
809
810	}
811	}
812	/else: shorter records can be used for alignment, I guess. /
813
814	/* next */
815	uCursor.pu8 = pbRecStart + cbRec + 2;
816	cbSymTab -= cbRec + 2;
817	}
818	return rc;
819	}
820
821
822	/**
823	* Makes a copy of the CV8 source string table.
824	*
825	* It will be references in a subsequent source information table, and again by
826	* line number tables thru that.
827	*
828	* @returns IPRT status code
829	* @param pThis The CodeView debug info reader instance.
830	* @param pvSrcStrings The source string table.
831	* @param cbSrcStrings The size of the source strings.
832	* @param fFlags Flags reserved for future exploits, MBZ.
833	*/
834	static int rtDbgModCvSsProcessV8SrcStrings(PRTDBGMODCV pThis, void const *pvSrcStrings, size_t cbSrcStrings, uint32_t fFlags)
835	{
836	RT_NOREF_PV(fFlags);
837
838	if (pThis->cbSrcStrings)
839	Log(("\n!!More than one source file string table for this module!!\n\n"));
840
841	if (cbSrcStrings >= pThis->cbSrcStringsAlloc)
842	{
843	void *pvNew = RTMemRealloc(pThis->pchSrcStrings, cbSrcStrings + 1);
844	AssertReturn(pvNew, VERR_NO_MEMORY);
845	pThis->pchSrcStrings = (char *)pvNew;
846	pThis->cbSrcStringsAlloc = cbSrcStrings + 1;
847	}
848	memcpy(pThis->pchSrcStrings, pvSrcStrings, cbSrcStrings);
849	pThis->pchSrcStrings[cbSrcStrings] = '\0';
850	pThis->cbSrcStrings = cbSrcStrings;
851	Log2((" saved %#x bytes of CV8 source strings\n", cbSrcStrings));
852
853	if (LogIs3Enabled())
854	{
855	size_t iFile = 0;
856	size_t off = pThis->pchSrcStrings[0] != '\0' ? 0 : 1;
857	while (off < cbSrcStrings)
858	{
859	size_t cch = strlen(&pThis->pchSrcStrings[off]);
860	Log3((" %010zx #%03zu: %s\n", off, iFile, &pThis->pchSrcStrings[off]));
861	off += cch + 1;
862	iFile++;
863	}
864	}
865
866	return VINF_SUCCESS;
867	}
868
869
870	/**
871	* Makes a copy of the CV8 source information table.
872	*
873	* It will be references in subsequent line number tables.
874	*
875	* @returns IPRT status code
876	* @param pThis The CodeView debug info reader instance.
877	* @param pvSrcInfo The source information table.
878	* @param cbSrcInfo The size of the source information table (bytes).
879	* @param fFlags Flags reserved for future exploits, MBZ.
880	*/
881	static int rtDbgModCvSsProcessV8SrcInfo(PRTDBGMODCV pThis, void const *pvSrcInfo, size_t cbSrcInfo, uint32_t fFlags)
882	{
883	RT_NOREF_PV(fFlags);
884
885	if (pThis->cbSrcInfo)
886	Log(("\n!!More than one source file info table for this module!!\n\n"));
887
888	if (cbSrcInfo + sizeof(RTCV8SRCINFO) > pThis->cbSrcInfoAlloc)
889	{
890	void *pvNew = RTMemRealloc(pThis->pbSrcInfo, cbSrcInfo + sizeof(RTCV8SRCINFO));
891	AssertReturn(pvNew, VERR_NO_MEMORY);
892	pThis->pbSrcInfo = (uint8_t *)pvNew;
893	pThis->cbSrcInfoAlloc = cbSrcInfo + sizeof(RTCV8SRCINFO);
894	}
895	memcpy(pThis->pbSrcInfo, pvSrcInfo, cbSrcInfo);
896	memset(&pThis->pbSrcInfo[cbSrcInfo], 0, sizeof(RTCV8SRCINFO));
897	pThis->cbSrcInfo = cbSrcInfo;
898	Log2((" saved %#x bytes of CV8 source file info\n", cbSrcInfo));
899	return VINF_SUCCESS;
900	}
901
902
903	/**
904	* Makes a copy of the CV8 source string table.
905	*
906	* It will be references in subsequent line number tables.
907	*
908	* @returns IPRT status code
909	* @param pThis The CodeView debug info reader instance.
910	* @param pvSectLines The section source line table.
911	* @param cbSectLines The size of the section source line table.
912	* @param fFlags Flags reserved for future exploits, MBZ.
913	*/
914	static int rtDbgModCvSsProcessV8SectLines(PRTDBGMODCV pThis, void const *pvSectLines, size_t cbSectLines, uint32_t fFlags)
915	{
916	RT_NOREF_PV(fFlags);
917
918	/*
919	* Starts with header.
920	*/
921	PCRTCV8LINESHDR pHdr = (PCRTCV8LINESHDR)pvSectLines;
922	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSectLines >= sizeof(*pHdr));
923	cbSectLines -= sizeof(*pHdr);
924	Log2(("RTDbgModCv: seg #%u, off %#x LB %#x \n", pHdr->iSection, pHdr->offSection, pHdr->cbSectionCovered));
925
926	RTCPTRUNION uCursor;
927	uCursor.pv = pHdr + 1;
928	while (cbSectLines > 0)
929	{
930	/* Source file header. */
931	PCRTCV8LINESSRCMAP pSrcHdr = (PCRTCV8LINESSRCMAP)uCursor.pv;
932	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSectLines >= sizeof(*pSrcHdr));
933	RTDBGMODCV_CHECK_NOMSG_RET_BF(pSrcHdr->cb == pSrcHdr->cLines * sizeof(RTCV8LINEPAIR) + sizeof(RTCV8LINESSRCMAP));
934	RTDBGMODCV_CHECK_RET_BF(!(pSrcHdr->offSourceInfo & 3), ("offSourceInfo=%#x\n", pSrcHdr->offSourceInfo));
935	if (pSrcHdr->offSourceInfo + sizeof(uint32_t) <= pThis->cbSrcInfo)
936	{
937	PCRTCV8SRCINFO pSrcInfo = (PCRTCV8SRCINFO)&pThis->pbSrcInfo[pSrcHdr->offSourceInfo];
938	const char *pszName = pSrcInfo->offSourceName < pThis->cbSrcStrings
939	? &pThis->pchSrcStrings[pSrcInfo->offSourceName] : "unknown.c";
940	pszName = rtDbgModCvAddSanitizedStringToCache(pszName, RTSTR_MAX);
941	Log2(("RTDbgModCv: #%u lines, %#x bytes, %#x=%s\n", pSrcHdr->cLines, pSrcHdr->cb, pSrcInfo->offSourceName, pszName));
942
943	if (pszName)
944	{
945	/* Process the line/offset pairs. */
946	uint32_t cLeft = pSrcHdr->cLines;
947	PCRTCV8LINEPAIR pPair = (PCRTCV8LINEPAIR)(pSrcHdr + 1);
948	while (cLeft-- > 0)
949	{
950	uint32_t idxSeg = pHdr->iSection;
951	uint64_t off = pPair->offSection + pHdr->offSection;
952	int rc = rtDbgModCvAdjustSegAndOffset(pThis, &idxSeg, &off);
953	if (RT_SUCCESS(rc))
954	rc = RTDbgModLineAdd(pThis->hCnt, pszName, pPair->uLineNumber, idxSeg, off, NULL);
955	if (RT_SUCCESS(rc))
956	Log3(("RTDbgModCv: %#x:%#010llx %0u\n", idxSeg, off, pPair->uLineNumber));
957	else
958	Log(( "RTDbgModCv: %#x:%#010llx %0u - rc=%Rrc!! (org: idxSeg=%#x off=%#x)\n",
959	idxSeg, off, pPair->uLineNumber, rc, pHdr->iSection, pPair->offSection));
960
961	/* next */
962	pPair++;
963	}
964	Assert((uintptr_t)pPair - (uintptr_t)pSrcHdr == pSrcHdr->cb);
965	}
966	}
967	else
968	Log(("RTDbgModCv: offSourceInfo=%#x cbSrcInfo=%#x!\n", pSrcHdr->offSourceInfo, pThis->cbSrcInfo));
969
970	/* next */
971	cbSectLines -= pSrcHdr->cb;
972	uCursor.pu8 += pSrcHdr->cb;
973	}
974
975	return VINF_SUCCESS;
976	}
977
978
979
980	/**
981	* Parses a CV8 symbol table, adding symbols to the container.
982	*
983	* @returns IPRT status code
984	* @param pThis The CodeView debug info reader instance.
985	* @param pvSymTab The symbol table.
986	* @param cbSymTab The size of the symbol table.
987	* @param fFlags Flags reserved for future exploits, MBZ.
988	*/
989	static int rtDbgModCvSsProcessV8SymTab(PRTDBGMODCV pThis, void const *pvSymTab, size_t cbSymTab, uint32_t fFlags)
990	{
991	size_t const cbSymTabSaved = cbSymTab;
992	int rc = VINF_SUCCESS;
993
994	/*
995	* First pass looks for source information and source strings tables.
996	* Microsoft puts the 0xf3 and 0xf4 last, usually with 0xf4 first.
997	*
998	* We ASSUME one string and one info table per module!
999	*/
1000	RTCPTRUNION uCursor;
1001	uCursor.pv = pvSymTab;
1002	for (;;)
1003	{
1004	RTDBGMODCV_CHECK_RET_BF(cbSymTab > sizeof(RTCV8SYMBOLSBLOCK), ("cbSymTab=%zu\n", cbSymTab));
1005	PCRTCV8SYMBOLSBLOCK pBlockHdr = (PCRTCV8SYMBOLSBLOCK)uCursor.pv;
1006	Log3((" %p: pass #1 uType=%#04x LB %#x\n", (uint8_t )pBlockHdr - (uint8_t )pvSymTab, pBlockHdr->uType, pBlockHdr->cb));
1007	RTDBGMODCV_CHECK_RET_BF(pBlockHdr->cb <= cbSymTab - sizeof(RTCV8SYMBOLSBLOCK),
1008	("cb=%#u cbSymTab=%zu\n", pBlockHdr->cb, cbSymTab));
1009
1010	switch (pBlockHdr->uType)
1011	{
1012	case RTCV8SYMBLOCK_TYPE_SRC_STR:
1013	rc = rtDbgModCvSsProcessV8SrcStrings(pThis, pBlockHdr + 1, pBlockHdr->cb, fFlags);
1014	break;
1015
1016	case RTCV8SYMBLOCK_TYPE_SRC_INFO:
1017	rc = rtDbgModCvSsProcessV8SrcInfo(pThis, pBlockHdr + 1, pBlockHdr->cb, fFlags);
1018	break;
1019
1020	case RTCV8SYMBLOCK_TYPE_SECT_LINES:
1021	case RTCV8SYMBLOCK_TYPE_SYMBOLS:
1022	break;
1023	default:
1024	Log(("rtDbgModCvSsProcessV8SymTab: Unknown block type %#x (LB %#x)\n", pBlockHdr->uType, pBlockHdr->cb));
1025	break;
1026	}
1027	uint32_t cbAligned = RT_ALIGN_32(sizeof(*pBlockHdr) + pBlockHdr->cb, 4);
1028	if (RT_SUCCESS(rc) && cbSymTab > cbAligned)
1029	{
1030	uCursor.pu8 += cbAligned;
1031	cbSymTab -= cbAligned;
1032	}
1033	else
1034	break;
1035	}
1036
1037	/*
1038	* Log the source info now that we've gathered both it and the strings.
1039	*/
1040	if (LogIs3Enabled() && pThis->cbSrcInfo)
1041	{
1042	Log3((" Source file info table:\n"));
1043	size_t iFile = 0;
1044	size_t off = 0;
1045	while (off + 4 <= pThis->cbSrcInfo)
1046	{
1047	PCRTCV8SRCINFO pSrcInfo = (PCRTCV8SRCINFO)&pThis->pbSrcInfo[off];
1048	#ifdef LOG_ENABLED
1049	const char *pszName = pSrcInfo->offSourceName < pThis->cbSrcStrings
1050	? &pThis->pchSrcStrings[pSrcInfo->offSourceName] : "out-of-bounds.c!";
1051	if (pSrcInfo->uDigestType == RTCV8SRCINFO_DIGEST_TYPE_MD5)
1052	Log3((" %010zx #%03zu: %RTuuid %#x=%s\n", off, iFile, &pSrcInfo->Digest.md5, pSrcInfo->offSourceName, pszName));
1053	else if (pSrcInfo->uDigestType == RTCV8SRCINFO_DIGEST_TYPE_NONE)
1054	Log3((" %010zx #%03zu: <none> %#x=%s\n", off, iFile, pSrcInfo->offSourceName, pszName));
1055	else
1056	Log3((" %010zx #%03zu: !%#x! %#x=%s\n", off, iFile, pSrcInfo->uDigestType, pSrcInfo->offSourceName, pszName));
1057	#endif
1058	off += pSrcInfo->uDigestType == RTCV8SRCINFO_DIGEST_TYPE_MD5 ? sizeof(*pSrcInfo) : 8;
1059	iFile++;
1060	}
1061	}
1062
1063	/*
1064	* Second pass, process symbols and line numbers.
1065	*/
1066	uCursor.pv = pvSymTab;
1067	cbSymTab = cbSymTabSaved;
1068	for (;;)
1069	{
1070	RTDBGMODCV_CHECK_RET_BF(cbSymTab > sizeof(RTCV8SYMBOLSBLOCK), ("cbSymTab=%zu\n", cbSymTab));
1071	PCRTCV8SYMBOLSBLOCK pBlockHdr = (PCRTCV8SYMBOLSBLOCK)uCursor.pv;
1072	Log3((" %p: pass #2 uType=%#04x LB %#x\n", (uint8_t )pBlockHdr - (uint8_t )pvSymTab, pBlockHdr->uType, pBlockHdr->cb));
1073	RTDBGMODCV_CHECK_RET_BF(pBlockHdr->cb <= cbSymTab - sizeof(RTCV8SYMBOLSBLOCK),
1074	("cb=%#u cbSymTab=%zu\n", pBlockHdr->cb, cbSymTab));
1075
1076	switch (pBlockHdr->uType)
1077	{
1078	case RTCV8SYMBLOCK_TYPE_SYMBOLS:
1079	rc = rtDbgModCvSsProcessV4PlusSymTab(pThis, pBlockHdr + 1, pBlockHdr->cb, fFlags);
1080	break;
1081
1082	case RTCV8SYMBLOCK_TYPE_SECT_LINES:
1083	rc = rtDbgModCvSsProcessV8SectLines(pThis, pBlockHdr + 1, pBlockHdr->cb, fFlags);
1084	break;
1085
1086	case RTCV8SYMBLOCK_TYPE_SRC_INFO:
1087	case RTCV8SYMBLOCK_TYPE_SRC_STR:
1088	break;
1089	default:
1090	Log(("rtDbgModCvSsProcessV8SymTab: Unknown block type %#x (LB %#x)\n", pBlockHdr->uType, pBlockHdr->cb));
1091	break;
1092	}
1093	uint32_t cbAligned = RT_ALIGN_32(sizeof(*pBlockHdr) + pBlockHdr->cb, 4);
1094	if (RT_SUCCESS(rc) && cbSymTab > cbAligned)
1095	{
1096	uCursor.pu8 += cbAligned;
1097	cbSymTab -= cbAligned;
1098	}
1099	else
1100	break;
1101	}
1102	return rc;
1103	}
1104
1105
1106	/** @callback_method_impl{FNDBGMODCVSUBSECTCALLBACK,
1107	* Parses kCvSst_GlobalPub\, kCvSst_GlobalSym and kCvSst_StaticSym subsections\,
1108	* adding symbols it finds to the container.} */
1109	static DECLCALLBACK(int)
1110	rtDbgModCvSs_GlobalPub_GlobalSym_StaticSym(PRTDBGMODCV pThis, void const *pvSubSect, size_t cbSubSect, PCRTCVDIRENT32 pDirEnt)
1111	{
1112	PCRTCVGLOBALSYMTABHDR pHdr = (PCRTCVGLOBALSYMTABHDR)pvSubSect;
1113	RT_NOREF_PV(pDirEnt);
1114
1115	/*
1116	* Quick data validation.
1117	*/
1118	Log2(("RTDbgModCv: %s: uSymHash=%#x uAddrHash=%#x cbSymbols=%#x cbSymHash=%#x cbAddrHash=%#x\n",
1119	rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType), pHdr->uSymHash,
1120	pHdr->uAddrHash, pHdr->cbSymbols, pHdr->cbSymHash, pHdr->cbAddrHash));
1121	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSubSect >= sizeof(RTCVGLOBALSYMTABHDR));
1122	RTDBGMODCV_CHECK_NOMSG_RET_BF((uint64_t)pHdr->cbSymbols + pHdr->cbSymHash + pHdr->cbAddrHash <= cbSubSect - sizeof(*pHdr));
1123	RTDBGMODCV_CHECK_NOMSG_RET_BF(pHdr->uSymHash < 0x20);
1124	RTDBGMODCV_CHECK_NOMSG_RET_BF(pHdr->uAddrHash < 0x20);
1125	if (!pHdr->cbSymbols)
1126	return VINF_SUCCESS;
1127
1128	/*
1129	* Parse the symbols.
1130	*/
1131	return rtDbgModCvSsProcessV4PlusSymTab(pThis, pHdr + 1, pHdr->cbSymbols, 0);
1132	}
1133
1134
1135	/** @callback_method_impl{FNDBGMODCVSUBSECTCALLBACK,
1136	* Parses kCvSst_Module subsection\, storing the debugging style in pThis.} */
1137	static DECLCALLBACK(int)
1138	rtDbgModCvSs_Module(PRTDBGMODCV pThis, void const *pvSubSect, size_t cbSubSect, PCRTCVDIRENT32 pDirEnt)
1139	{
1140	RT_NOREF_PV(pDirEnt);
1141
1142	RTCPTRUNION uCursor;
1143	uCursor.pv = pvSubSect;
1144	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSubSect >= 2 + 2 + 2 + 2 + 0 + 1);
1145	uint16_t iOverlay = *uCursor.pu16++; NOREF(iOverlay);
1146	uint16_t iLib = *uCursor.pu16++; NOREF(iLib);
1147	uint16_t cSegs = *uCursor.pu16++;
1148	pThis->uCurStyle = *uCursor.pu16++;
1149	if (pThis->uCurStyle == 0)
1150	pThis->uCurStyle = RT_MAKE_U16('C', 'V');
1151	pThis->uCurStyleVer = 0;
1152	pThis->cbSrcInfo = 0;
1153	pThis->cbSrcStrings = 0;
1154	uint8_t cchName = uCursor.pu8[cSegs * 12];
1155	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSubSect >= 2 + 2 + 2 + 2 + cSegs * 12U + 1 + cchName);
1156
1157	#ifdef LOG_ENABLED
1158	const char pchName = (const char )&uCursor.pu8[cSegs * 12 + 1];
1159	Log2(("RTDbgModCv: Module: iOverlay=%#x iLib=%#x cSegs=%#x Style=%c%c (%#x) %.*s\n", iOverlay, iLib, cSegs,
1160	RT_BYTE1(pThis->uCurStyle), RT_BYTE2(pThis->uCurStyle), pThis->uCurStyle, cchName, pchName));
1161	#endif
1162	RTDBGMODCV_CHECK_NOMSG_RET_BF(pThis->uCurStyle == RT_MAKE_U16('C', 'V'));
1163
1164	#ifdef LOG_ENABLED
1165	PCRTCVMODSEGINFO32 paSegs = (PCRTCVMODSEGINFO32)uCursor.pv;
1166	for (uint16_t iSeg = 0; iSeg < cSegs; iSeg++)
1167	Log2((" #%02u: %04x:%08x LB %08x\n", iSeg, paSegs[iSeg].iSeg, paSegs[iSeg].off, paSegs[iSeg].cb));
1168	#endif
1169
1170	return VINF_SUCCESS;
1171	}
1172
1173
1174	/** @callback_method_impl{FNDBGMODCVSUBSECTCALLBACK,
1175	* Parses kCvSst_Symbols\, kCvSst_PublicSym and kCvSst_AlignSym subsections\,
1176	* adding symbols it finds to the container.} */
1177	static DECLCALLBACK(int)
1178	rtDbgModCvSs_Symbols_PublicSym_AlignSym(PRTDBGMODCV pThis, void const *pvSubSect, size_t cbSubSect, PCRTCVDIRENT32 pDirEnt)
1179	{
1180	RT_NOREF_PV(pDirEnt);
1181	RTDBGMODCV_CHECK_NOMSG_RET_BF(pThis->uCurStyle == RT_MAKE_U16('C', 'V'));
1182	RTDBGMODCV_CHECK_NOMSG_RET_BF(cbSubSect >= 8);
1183
1184	uint32_t u32Signature = (uint32_t const )pvSubSect;
1185	RTDBGMODCV_CHECK_RET_BF(u32Signature == RTCVSYMBOLS_SIGNATURE_CV4 \|\| u32Signature == RTCVSYMBOLS_SIGNATURE_CV8,
1186	("%#x, expected %#x\n", u32Signature, RTCVSYMBOLS_SIGNATURE_CV4));
1187	if (u32Signature == RTCVSYMBOLS_SIGNATURE_CV8)
1188	return rtDbgModCvSsProcessV8SymTab(pThis, (uint8_t const *)pvSubSect + 4, cbSubSect - 4, 0);
1189	return rtDbgModCvSsProcessV4PlusSymTab(pThis, (uint8_t const *)pvSubSect + 4, cbSubSect - 4, 0);
1190	}
1191
1192
1193	/** @callback_method_impl{FNDBGMODCVSUBSECTCALLBACK,
1194	* Parses kCvSst_SrcModule adding line numbers it finds to the container.}
1195	*/
1196	static DECLCALLBACK(int)
1197	rtDbgModCvSs_SrcModule(PRTDBGMODCV pThis, void const *pvSubSect, size_t cbSubSect, PCRTCVDIRENT32 pDirEnt)
1198	{
1199	RT_NOREF_PV(pDirEnt);
1200	Log(("rtDbgModCvSs_SrcModule: uCurStyle=%#x\n%.*Rhxd\n", pThis->uCurStyle, cbSubSect, pvSubSect));
1201
1202	/* Check the header. */
1203	PCRTCVSRCMODULE pHdr = (PCRTCVSRCMODULE)pvSubSect;
1204	AssertReturn(cbSubSect >= RT_UOFFSETOF(RTCVSRCMODULE, aoffSrcFiles), VERR_CV_BAD_FORMAT);
1205	size_t cbHdr = sizeof(RTCVSRCMODULE)
1206	+ pHdr->cFiles * sizeof(uint32_t)
1207	+ pHdr->cSegs * sizeof(uint32_t) * 2
1208	+ pHdr->cSegs * sizeof(uint16_t);
1209	Log2(("RTDbgModCv: SrcModule: cFiles=%u cSegs=%u\n", pHdr->cFiles, pHdr->cFiles));
1210	RTDBGMODCV_CHECK_RET_BF(cbSubSect >= cbHdr, ("cbSubSect=%#x cbHdr=%zx\n", cbSubSect, cbHdr));
1211	#ifdef LOG_ENABLED
1212	if (LogIs2Enabled())
1213	{
1214	for (uint32_t i = 0; i < pHdr->cFiles; i++)
1215	Log2(("RTDbgModCv: source file #%u: %#x\n", i, pHdr->aoffSrcFiles[i]));
1216	PCRTCVSRCRANGE paSegRanges = (PCRTCVSRCRANGE)&pHdr->aoffSrcFiles[pHdr->cFiles];
1217	uint16_t const paidxSegs = (uint16_t const )&paSegRanges[pHdr->cSegs];
1218	for (uint32_t i = 0; i < pHdr->cSegs; i++)
1219	Log2(("RTDbgModCv: seg #%u: %#010x-%#010x\n", paidxSegs[i], paSegRanges[i].offStart, paSegRanges[i].offEnd));
1220	}
1221	#endif
1222
1223	/*
1224	* Work over the source files.
1225	*/
1226	for (uint32_t i = 0; i < pHdr->cFiles; i++)
1227	{
1228	uint32_t const offSrcFile = pHdr->aoffSrcFiles[i];
1229	RTDBGMODCV_CHECK_RET_BF(cbSubSect - RT_UOFFSETOF(RTCVSRCFILE, aoffSrcLines) >= offSrcFile,
1230	("cbSubSect=%#x (- %#x) aoffSrcFiles[%u]=%#x\n",
1231	cbSubSect, RT_UOFFSETOF(RTCVSRCFILE, aoffSrcLines), i, offSrcFile));
1232	PCRTCVSRCFILE pSrcFile = (PCRTCVSRCFILE)((uint8_t const *)pvSubSect + offSrcFile);
1233	size_t cbSrcFileHdr = RT_UOFFSETOF_DYN(RTCVSRCFILE, aoffSrcLines[pSrcFile->cSegs])
1234	+ sizeof(RTCVSRCRANGE) * pSrcFile->cSegs
1235	+ sizeof(uint8_t);
1236	RTDBGMODCV_CHECK_RET_BF(cbSubSect >= offSrcFile + cbSrcFileHdr && cbSubSect > cbSrcFileHdr,
1237	("cbSubSect=%#x aoffSrcFiles[%u]=%#x cbSrcFileHdr=%#x\n", cbSubSect, offSrcFile, i, cbSrcFileHdr));
1238	PCRTCVSRCRANGE paSegRanges = (PCRTCVSRCRANGE)&pSrcFile->aoffSrcLines[pSrcFile->cSegs];
1239	uint8_t const pcchName = (uint8_t const )&paSegRanges[pSrcFile->cSegs]; /** @todo TIS NB09 docs say 16-bit length... */
1240	const char pchName = (const char )(pcchName + 1);
1241	RTDBGMODCV_CHECK_RET_BF(cbSubSect >= offSrcFile + cbSrcFileHdr + *pcchName,
1242	("cbSubSect=%#x offSrcFile=%#x cbSubSect=%#x *pcchName=%#x\n",
1243	cbSubSect, offSrcFile, cbSubSect, *pcchName));
1244	Log2(("RTDbgModCv: source file #%u/%#x: cSegs=%#x '%.s'\n", i, offSrcFile, pSrcFile->cSegs, pcchName, pchName));
1245	const char pszName = rtDbgModCvAddSanitizedStringToCache(pchName, pcchName);
1246
1247	/*
1248	* Work the segments this source file contributes code to.
1249	*/
1250	for (uint32_t iSeg = 0; iSeg < pSrcFile->cSegs; iSeg++)
1251	{
1252	uint32_t const offSrcLine = pSrcFile->aoffSrcLines[iSeg];
1253	RTDBGMODCV_CHECK_RET_BF(cbSubSect - RT_UOFFSETOF(RTCVSRCLINE, aoffLines) >= offSrcLine,
1254	("cbSubSect=%#x (- %#x) aoffSrcFiles[%u]=%#x\n",
1255	cbSubSect, RT_UOFFSETOF(RTCVSRCLINE, aoffLines), iSeg, offSrcLine));
1256	PCRTCVSRCLINE pSrcLine = (PCRTCVSRCLINE)((uint8_t const *)pvSubSect + offSrcLine);
1257	size_t cbSrcLine = RT_UOFFSETOF_DYN(RTCVSRCLINE, aoffLines[pSrcLine->cPairs])
1258	+ pSrcLine->cPairs * sizeof(uint16_t);
1259	RTDBGMODCV_CHECK_RET_BF(cbSubSect >= offSrcLine + cbSrcLine,
1260	("cbSubSect=%#x aoffSrcFiles[%u]=%#x cbSrcLine=%#x\n",
1261	cbSubSect, iSeg, offSrcLine, cbSrcLine));
1262	uint16_t const paiLines = (uint16_t const )&pSrcLine->aoffLines[pSrcLine->cPairs];
1263	Log2(("RTDbgModCv: seg #%u, %u pairs (off %#x)\n", pSrcLine->idxSeg, pSrcLine->cPairs, offSrcLine));
1264	for (uint32_t iPair = 0; iPair < pSrcLine->cPairs; iPair++)
1265	{
1266
1267	uint32_t idxSeg = pSrcLine->idxSeg;
1268	uint64_t off = pSrcLine->aoffLines[iPair];
1269	int rc = rtDbgModCvAdjustSegAndOffset(pThis, &idxSeg, &off);
1270	if (RT_SUCCESS(rc))
1271	rc = RTDbgModLineAdd(pThis->hCnt, pszName, paiLines[iPair], idxSeg, off, NULL);
1272	if (RT_SUCCESS(rc))
1273	Log3(("RTDbgModCv: %#x:%#010llx %0u\n", idxSeg, off, paiLines[iPair]));
1274	/* Note! Wlink produces the sstSrcModule subsections from LINNUM records, however the
1275	CVGenLines() function assumes there is only one segment contributing to the
1276	line numbers. So, when we do assembly that jumps between segments, it emits
1277	the wrong addresses for some line numbers and we end up here, typically with
1278	VERR_DBG_ADDRESS_CONFLICT. */
1279	else
1280	Log(( "RTDbgModCv: %#x:%#010llx %0u - rc=%Rrc!! (org: idxSeg=%#x off=%#x)\n",
1281	idxSeg, off, paiLines[iPair], rc, pSrcLine->idxSeg, pSrcLine->aoffLines[iPair]));
1282	}
1283	}
1284	}
1285
1286	return VINF_SUCCESS;
1287	}
1288
1289
1290	static int rtDbgModCvLoadSegmentMap(PRTDBGMODCV pThis)
1291	{
1292	/*
1293	* Search for the segment map and segment names. They will be at the end of the directory.
1294	*/
1295	uint32_t iSegMap = UINT32_MAX;
1296	uint32_t iSegNames = UINT32_MAX;
1297	uint32_t i = pThis->cDirEnts;
1298	while (i-- > 0)
1299	{
1300	if ( pThis->paDirEnts[i].iMod != 0xffff
1301	&& pThis->paDirEnts[i].iMod != 0x0000)
1302	break;
1303	if (pThis->paDirEnts[i].uSubSectType == kCvSst_SegMap)
1304	iSegMap = i;
1305	else if (pThis->paDirEnts[i].uSubSectType == kCvSst_SegName)
1306	iSegNames = i;
1307	}
1308	if (iSegMap == UINT32_MAX)
1309	{
1310	Log(("RTDbgModCv: No segment map present, using segment indexes as is then...\n"));
1311	return VINF_SUCCESS;
1312	}
1313	RTDBGMODCV_CHECK_RET_BF(pThis->paDirEnts[iSegMap].cb >= sizeof(RTCVSEGMAPHDR),
1314	("Bad sstSegMap entry: cb=%#x\n", pThis->paDirEnts[iSegMap].cb));
1315	RTDBGMODCV_CHECK_NOMSG_RET_BF(iSegNames == UINT32_MAX \|\| pThis->paDirEnts[iSegNames].cb > 0);
1316
1317	/*
1318	* Read them into memory.
1319	*/
1320	int rc = rtDbgModCvReadAtAlloc(pThis, pThis->paDirEnts[iSegMap].off, (void **)&pThis->pSegMap,
1321	pThis->paDirEnts[iSegMap].cb);
1322	if (iSegNames != UINT32_MAX && RT_SUCCESS(rc))
1323	{
1324	pThis->cbSegNames = pThis->paDirEnts[iSegNames].cb;
1325	rc = rtDbgModCvReadAtAlloc(pThis, pThis->paDirEnts[iSegNames].off, (void **)&pThis->pszzSegNames,
1326	pThis->paDirEnts[iSegNames].cb);
1327	}
1328	if (RT_FAILURE(rc))
1329	return rc;
1330	RTDBGMODCV_CHECK_NOMSG_RET_BF(!pThis->pszzSegNames \|\| !pThis->pszzSegNames[pThis->cbSegNames - 1]); /* must be terminated */
1331
1332	/* Use local pointers to avoid lots of indirection and typing. */
1333	PCRTCVSEGMAPHDR pHdr = &pThis->pSegMap->Hdr;
1334	PRTCVSEGMAPDESC paDescs = &pThis->pSegMap->aDescs[0];
1335
1336	/*
1337	* If there are only logical segments, assume a direct mapping.
1338	* PE images, like the NT4 kernel, does it like this.
1339	*/
1340	bool const fNoGroups = pHdr->cSegs == pHdr->cLogSegs;
1341
1342	/*
1343	* The PE image has an extra section/segment for the headers, the others
1344	* doesn't. PE images doesn't have DOS frames. So, figure the image type now.
1345	*/
1346	RTLDRFMT enmImgFmt = RTLDRFMT_INVALID;
1347	if (pThis->pMod->pImgVt)
1348	enmImgFmt = pThis->pMod->pImgVt->pfnGetFormat(pThis->pMod);
1349
1350	/*
1351	* Validate and display it all.
1352	*/
1353	Log2(("RTDbgModCv: SegMap: cSegs=%#x cLogSegs=%#x (cbSegNames=%#x)\n", pHdr->cSegs, pHdr->cLogSegs, pThis->cbSegNames));
1354	RTDBGMODCV_CHECK_RET_BF(pThis->paDirEnts[iSegMap].cb >= sizeof(pHdr) + pHdr->cSegs sizeof(paDescs[0]),
1355	("SegMap is out of bounds: cbSubSect=%#x cSegs=%#x\n", pThis->paDirEnts[iSegMap].cb, pHdr->cSegs));
1356	RTDBGMODCV_CHECK_NOMSG_RET_BF(pHdr->cSegs >= pHdr->cLogSegs);
1357
1358	Log2(("Logical segment descriptors: %u\n", pHdr->cLogSegs));
1359
1360	bool fHaveDosFrames = false;
1361	for (i = 0; i < pHdr->cSegs; i++)
1362	{
1363	if (i == pHdr->cLogSegs)
1364	Log2(("Group/Physical descriptors: %u\n", pHdr->cSegs - pHdr->cLogSegs));
1365	char szFlags[16];
1366	memset(szFlags, '-', sizeof(szFlags));
1367	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_READ)
1368	szFlags[0] = 'R';
1369	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_WRITE)
1370	szFlags[1] = 'W';
1371	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_EXECUTE)
1372	szFlags[2] = 'X';
1373	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_32BIT)
1374	szFlags[3] = '3', szFlags[4] = '2';
1375	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_SEL)
1376	szFlags[5] = 'S';
1377	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_ABS)
1378	szFlags[6] = 'A';
1379	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_GROUP)
1380	szFlags[7] = 'G';
1381	szFlags[8] = '\0';
1382	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_RESERVED)
1383	szFlags[8] = '!', szFlags[9] = '\0';
1384	Log2((" #%02u: %#010x LB %#010x flags=%#06x ovl=%#06x group=%#06x frame=%#06x iSegName=%#06x iClassName=%#06x %s\n",
1385	i < pHdr->cLogSegs ? i : i - pHdr->cLogSegs, paDescs[i].off, paDescs[i].cb, paDescs[i].fFlags, paDescs[i].iOverlay,
1386	paDescs[i].iGroup, paDescs[i].iFrame, paDescs[i].offSegName, paDescs[i].offClassName, szFlags));
1387
1388	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].offSegName == UINT16_MAX \|\| paDescs[i].offSegName < pThis->cbSegNames);
1389	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].offClassName == UINT16_MAX \|\| paDescs[i].offClassName < pThis->cbSegNames);
1390	const char *pszName = paDescs[i].offSegName != UINT16_MAX
1391	? pThis->pszzSegNames + paDescs[i].offSegName
1392	: NULL;
1393	const char *pszClass = paDescs[i].offClassName != UINT16_MAX
1394	? pThis->pszzSegNames + paDescs[i].offClassName
1395	: NULL;
1396	if (pszName \|\| pszClass)
1397	Log2((" pszName=%s pszClass=%s\n", pszName, pszClass));
1398
1399	/* Validate the group link. */
1400	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].iGroup == 0 \|\| !(paDescs[i].fFlags & RTCVSEGMAPDESC_F_GROUP));
1401	RTDBGMODCV_CHECK_NOMSG_RET_BF( paDescs[i].iGroup == 0
1402	\|\| ( paDescs[i].iGroup >= pHdr->cLogSegs
1403	&& paDescs[i].iGroup < pHdr->cSegs));
1404	RTDBGMODCV_CHECK_NOMSG_RET_BF( paDescs[i].iGroup == 0
1405	\|\| (paDescs[paDescs[i].iGroup].fFlags & RTCVSEGMAPDESC_F_GROUP));
1406	RTDBGMODCV_CHECK_NOMSG_RET_BF(!(paDescs[i].fFlags & RTCVSEGMAPDESC_F_GROUP) \|\| paDescs[i].off == 0); /* assumed below */
1407
1408	if (fNoGroups)
1409	{
1410	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].iGroup == 0);
1411	if ( !fHaveDosFrames
1412	&& paDescs[i].iFrame != 0
1413	&& (paDescs[i].fFlags & (RTCVSEGMAPDESC_F_SEL \| RTCVSEGMAPDESC_F_ABS))
1414	&& paDescs[i].iOverlay == 0
1415	&& enmImgFmt != RTLDRFMT_PE
1416	&& pThis->enmType != RTCVFILETYPE_DBG)
1417	fHaveDosFrames = true; /* BIOS, only groups with frames. */
1418	}
1419	}
1420
1421	/*
1422	* Further valiations based on fHaveDosFrames or not.
1423	*/
1424	if (fNoGroups)
1425	{
1426	if (fHaveDosFrames)
1427	for (i = 0; i < pHdr->cSegs; i++)
1428	{
1429	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].iOverlay == 0);
1430	RTDBGMODCV_CHECK_NOMSG_RET_BF( (paDescs[i].fFlags & (RTCVSEGMAPDESC_F_SEL \| RTCVSEGMAPDESC_F_ABS))
1431	== RTCVSEGMAPDESC_F_SEL
1432	\|\| (paDescs[i].fFlags & (RTCVSEGMAPDESC_F_SEL \| RTCVSEGMAPDESC_F_ABS))
1433	== RTCVSEGMAPDESC_F_ABS);
1434	RTDBGMODCV_CHECK_NOMSG_RET_BF(!(paDescs[i].fFlags & RTCVSEGMAPDESC_F_ABS));
1435	}
1436	else
1437	for (i = 0; i < pHdr->cSegs; i++)
1438	RTDBGMODCV_CHECK_NOMSG_RET_BF(paDescs[i].off == 0);
1439	}
1440
1441	/*
1442	* Modify the groups index to be the loader segment index instead, also
1443	* add the segments to the container if we haven't done that already.
1444	*/
1445
1446	/* Guess work: Group can be implicit if used. Observed Visual C++ v1.5,
1447	omitting the CODE group. */
1448	const char *pszGroup0 = NULL;
1449	uint64_t cbGroup0 = 0;
1450	if (!fNoGroups && !fHaveDosFrames)
1451	{
1452	for (i = 0; i < pHdr->cSegs; i++)
1453	if ( !(paDescs[i].fFlags & (RTCVSEGMAPDESC_F_GROUP \| RTCVSEGMAPDESC_F_ABS))
1454	&& paDescs[i].iGroup == 0)
1455	{
1456	if (pszGroup0 == NULL && paDescs[i].offClassName != UINT16_MAX)
1457	pszGroup0 = pThis->pszzSegNames + paDescs[i].offClassName;
1458	uint64_t offEnd = (uint64_t)paDescs[i].off + paDescs[i].cb;
1459	if (offEnd > cbGroup0)
1460	cbGroup0 = offEnd;
1461	}
1462	}
1463
1464	/* Add the segments.
1465	Note! The RVAs derived from this exercise are all wrong. :-/
1466	Note! We don't have an image loader, so we cannot add any fake sections. */
1467	/** @todo Try see if we can figure something out from the frame value later. */
1468	if (!pThis->fHaveLoadedSegments)
1469	{
1470	uint16_t iSeg = 0;
1471	if (!fHaveDosFrames)
1472	{
1473	Assert(!pThis->pMod->pImgVt); Assert(pThis->enmType != RTCVFILETYPE_DBG);
1474	uint64_t uRva = 0;
1475	if (cbGroup0 && !fNoGroups)
1476	{
1477	rc = RTDbgModSegmentAdd(pThis->hCnt, 0, cbGroup0, pszGroup0 ? pszGroup0 : "Seg00", 0 /fFlags/, NULL);
1478	uRva += cbGroup0;
1479	iSeg++;
1480	}
1481
1482	for (i = 0; RT_SUCCESS(rc) && i < pHdr->cSegs; i++)
1483	if ((paDescs[i].fFlags & RTCVSEGMAPDESC_F_GROUP) \|\| fNoGroups)
1484	{
1485	char szName[16];
1486	char *pszName = szName;
1487	if (paDescs[i].offSegName != UINT16_MAX)
1488	pszName = pThis->pszzSegNames + paDescs[i].offSegName;
1489	else
1490	RTStrPrintf(szName, sizeof(szName), "Seg%02u", iSeg);
1491	rc = RTDbgModSegmentAdd(pThis->hCnt, uRva, paDescs[i].cb, pszName, 0 /fFlags/, NULL);
1492	uRva += paDescs[i].cb;
1493	iSeg++;
1494	}
1495	}
1496	else
1497	{
1498	/* The map is not sorted by RVA, very annoying, but I'm countering
1499	by being lazy and slow about it. :-) Btw. this is the BIOS case. */
1500	Assert(fNoGroups);
1501	#if 1 /** @todo need more inputs */
1502
1503	/* Figure image base address. */
1504	uint64_t uImageBase = UINT64_MAX;
1505	for (i = 0; RT_SUCCESS(rc) && i < pHdr->cSegs; i++)
1506	{
1507	uint64_t uAddr = (uint64_t)paDescs[i].off + ((uint32_t)paDescs[i].iFrame << 4);
1508	if (uAddr < uImageBase)
1509	uImageBase = uAddr;
1510	}
1511
1512	/* Add the segments. */
1513	uint64_t uMinAddr = uImageBase;
1514	for (i = 0; RT_SUCCESS(rc) && i < pHdr->cSegs; i++)
1515	{
1516	/* Figure out the next one. */
1517	uint16_t cOverlaps = 0;
1518	uint16_t iBest = UINT16_MAX;
1519	uint64_t uBestAddr = UINT64_MAX;
1520	for (uint16_t j = 0; j < pHdr->cSegs; j++)
1521	{
1522	uint64_t uAddr = (uint64_t)paDescs[j].off + ((uint32_t)paDescs[j].iFrame << 4);
1523	if (uAddr >= uMinAddr && uAddr < uBestAddr)
1524	{
1525	uBestAddr = uAddr;
1526	iBest = j;
1527	}
1528	else if (uAddr == uBestAddr)
1529	{
1530	cOverlaps++;
1531	if (paDescs[j].cb > paDescs[iBest].cb)
1532	{
1533	uBestAddr = uAddr;
1534	iBest = j;
1535	}
1536	}
1537	}
1538	if (iBest == UINT16_MAX && RT_SUCCESS(rc))
1539	{
1540	rc = VERR_CV_IPE;
1541	break;
1542	}
1543
1544	/* Add it. */
1545	char szName[16];
1546	char *pszName = szName;
1547	if (paDescs[iBest].offSegName != UINT16_MAX)
1548	pszName = pThis->pszzSegNames + paDescs[iBest].offSegName;
1549	else
1550	RTStrPrintf(szName, sizeof(szName), "Seg%02u", iSeg);
1551	RTDBGSEGIDX idxDbgSeg = NIL_RTDBGSEGIDX;
1552	rc = RTDbgModSegmentAdd(pThis->hCnt, uBestAddr - uImageBase, paDescs[iBest].cb, pszName, 0 /fFlags/, &idxDbgSeg);
1553	Log(("CV: %#010x LB %#010x %s uRVA=%#010x iBest=%u cOverlaps=%u [idxDbgSeg=%#x iSeg=%#x]\n",
1554	uBestAddr, paDescs[iBest].cb, szName, uBestAddr - uImageBase, iBest, cOverlaps, idxDbgSeg, idxDbgSeg));
1555
1556	/* Update translations. */
1557	paDescs[iBest].iGroup = iSeg;
1558	if (cOverlaps > 0)
1559	{
1560	for (uint16_t j = 0; j < pHdr->cSegs; j++)
1561	if ((uint64_t)paDescs[j].off + ((uint32_t)paDescs[j].iFrame << 4) == uBestAddr)
1562	paDescs[iBest].iGroup = iSeg;
1563	i += cOverlaps;
1564	}
1565
1566	/* Advance. */
1567	uMinAddr = uBestAddr + 1;
1568	iSeg++;
1569	}
1570
1571	pThis->fHaveDosFrames = true;
1572	#else
1573	uint32_t iFrameFirst = UINT32_MAX;
1574	uint16_t iSeg = 0;
1575	uint32_t iFrameMin = 0;
1576	do
1577	{
1578	/* Find next frame. */
1579	uint32_t iFrame = UINT32_MAX;
1580	for (uint16_t j = 0; j < pHdr->cSegs; j++)
1581	if (paDescs[j].iFrame >= iFrameMin && paDescs[j].iFrame < iFrame)
1582	iFrame = paDescs[j].iFrame;
1583	if (iFrame == UINT32_MAX)
1584	break;
1585
1586	/* Figure the frame span. */
1587	uint32_t offFirst = UINT32_MAX;
1588	uint64_t offEnd = 0;
1589	for (uint16_t j = 0; j < pHdr->cSegs; j++)
1590	if (paDescs[j].iFrame == iFrame)
1591	{
1592	uint64_t offThisEnd = paDescs[j].off + paDescs[j].cb;
1593	if (offThisEnd > offEnd)
1594	offEnd = offThisEnd;
1595	if (paDescs[j].off < offFirst)
1596	offFirst = paDescs[j].off;
1597	}
1598
1599	if (offFirst < offEnd)
1600	{
1601	/* Add it. */
1602	char szName[16];
1603	RTStrPrintf(szName, sizeof(szName), "Frame_%04x", iFrame);
1604	Log(("CV: %s offEnd=%#x offFirst=%#x\n", szName, offEnd, offFirst));
1605	if (iFrameFirst == UINT32_MAX)
1606	iFrameFirst = iFrame;
1607	rc = RTDbgModSegmentAdd(pThis->hCnt, (iFrame - iFrameFirst) << 4, offEnd, szName, 0 /fFlags/, NULL);
1608
1609	/* Translation updates. */
1610	for (uint16_t j = 0; j < pHdr->cSegs; j++)
1611	if (paDescs[j].iFrame == iFrame)
1612	{
1613	paDescs[j].iGroup = iSeg;
1614	paDescs[j].off = 0;
1615	paDescs[j].cb = offEnd > UINT32_MAX ? UINT32_MAX : (uint32_t)offEnd;
1616	}
1617
1618	iSeg++;
1619	}
1620
1621	iFrameMin = iFrame + 1;
1622	} while (RT_SUCCESS(rc));
1623	#endif
1624	}
1625
1626	if (RT_FAILURE(rc))
1627	{
1628	Log(("RTDbgModCv: %Rrc while adding segments from SegMap\n", rc));
1629	return rc;
1630	}
1631
1632	pThis->fHaveLoadedSegments = true;
1633
1634	/* Skip the stuff below if we have DOS frames since we did it all above. */
1635	if (fHaveDosFrames)
1636	return VINF_SUCCESS;
1637	}
1638
1639	/* Pass one: Fixate the group segment indexes. */
1640	uint16_t iSeg0 = enmImgFmt == RTLDRFMT_PE \|\| pThis->enmType == RTCVFILETYPE_DBG ? 1 : 0;
1641	uint16_t iSeg = iSeg0 + (cbGroup0 > 0); /** @todo probably wrong... */
1642	for (i = 0; i < pHdr->cSegs; i++)
1643	if (paDescs[i].fFlags & RTCVSEGMAPDESC_F_ABS)
1644	paDescs[i].iGroup = (uint16_t)(RTDBGSEGIDX_ABS & UINT16_MAX);
1645	else if ((paDescs[i].fFlags & RTCVSEGMAPDESC_F_GROUP) \|\| fNoGroups)
1646	paDescs[i].iGroup = iSeg++;
1647
1648	/* Pass two: Resolve group references in to segment indexes. */
1649	Log2(("Mapped segments (both kinds):\n"));
1650	for (i = 0; i < pHdr->cSegs; i++)
1651	{
1652	if (!fNoGroups && !(paDescs[i].fFlags & (RTCVSEGMAPDESC_F_GROUP \| RTCVSEGMAPDESC_F_ABS)))
1653	paDescs[i].iGroup = paDescs[i].iGroup == 0 ? iSeg0 : paDescs[paDescs[i].iGroup].iGroup;
1654
1655	Log2((" #%02u: %#010x LB %#010x -> %#06x (flags=%#06x ovl=%#06x frame=%#06x)\n",
1656	i, paDescs[i].off, paDescs[i].cb, paDescs[i].iGroup,
1657	paDescs[i].fFlags, paDescs[i].iOverlay, paDescs[i].iFrame));
1658	}
1659
1660	return VINF_SUCCESS;
1661	}
1662
1663
1664	/**
1665	* @callback_method_impl{PFNRTSORTCMP,
1666	* Used by rtDbgModCvLoadDirectory to sort the directory.}
1667	*/
1668	static DECLCALLBACK(int) rtDbgModCvDirEntCmp(void const pvElement1, void const pvElement2, void *pvUser)
1669	{
1670	PRTCVDIRENT32 pEntry1 = (PRTCVDIRENT32)pvElement1;
1671	PRTCVDIRENT32 pEntry2 = (PRTCVDIRENT32)pvElement2;
1672	if (pEntry1->iMod < pEntry2->iMod)
1673	return -1;
1674	if (pEntry1->iMod > pEntry2->iMod)
1675	return 1;
1676	if (pEntry1->uSubSectType < pEntry2->uSubSectType)
1677	return -1;
1678	if (pEntry1->uSubSectType > pEntry2->uSubSectType)
1679	return 1;
1680
1681	RT_NOREF_PV(pvUser);
1682	return 0;
1683	}
1684
1685
1686	/**
1687	* Loads the directory into memory (RTDBGMODCV::paDirEnts and
1688	* RTDBGMODCV::cDirEnts).
1689	*
1690	* Converting old format version into the newer format to simplifying the code
1691	* using the directory.
1692	*
1693	*
1694	* @returns IPRT status code. (May leave with paDirEnts allocated on failure.)
1695	* @param pThis The CV reader instance.
1696	*/
1697	static int rtDbgModCvLoadDirectory(PRTDBGMODCV pThis)
1698	{
1699	/*
1700	* Read in the CV directory.
1701	*/
1702	int rc;
1703	if ( pThis->u32CvMagic == RTCVHDR_MAGIC_NB00
1704	\|\| pThis->u32CvMagic == RTCVHDR_MAGIC_NB02)
1705	{
1706	/*
1707	* 16-bit type.
1708	*/
1709	RTCVDIRHDR16 DirHdr;
1710	rc = rtDbgModCvReadAt(pThis, pThis->offDir, &DirHdr, sizeof(DirHdr));
1711	if (RT_SUCCESS(rc))
1712	{
1713	if (DirHdr.cEntries > 2 && DirHdr.cEntries < _64K - 32U)
1714	{
1715	pThis->cDirEnts = DirHdr.cEntries;
1716	pThis->paDirEnts = (PRTCVDIRENT32)RTMemAlloc(DirHdr.cEntries * sizeof(pThis->paDirEnts[0]));
1717	if (pThis->paDirEnts)
1718	{
1719	rc = rtDbgModCvReadAt(pThis, pThis->offDir + sizeof(DirHdr),
1720	pThis->paDirEnts, DirHdr.cEntries * sizeof(RTCVDIRENT16));
1721	if (RT_SUCCESS(rc))
1722	{
1723	/* Convert the entries (from the end). */
1724	uint32_t cLeft = DirHdr.cEntries;
1725	RTCVDIRENT32 volatile *pDst = pThis->paDirEnts + cLeft;
1726	RTCVDIRENT16 volatile pSrc = (RTCVDIRENT16 volatile )pThis->paDirEnts + cLeft;
1727	while (cLeft--)
1728	{
1729	pDst--;
1730	pSrc--;
1731
1732	pDst->cb = pSrc->cb;
1733	pDst->off = RT_MAKE_U32(pSrc->offLow, pSrc->offHigh);
1734	pDst->iMod = pSrc->iMod;
1735	pDst->uSubSectType = pSrc->uSubSectType;
1736	}
1737	}
1738	}
1739	else
1740	rc = VERR_NO_MEMORY;
1741	}
1742	else
1743	{
1744	Log(("Old CV directory count is out of considered valid range: %#x\n", DirHdr.cEntries));
1745	rc = VERR_CV_BAD_FORMAT;
1746	}
1747	}
1748	}
1749	else
1750	{
1751	/*
1752	* 32-bit type (reading too much for NB04 is no problem).
1753	*
1754	* Note! The watcom linker (v1.9) seems to overwrite the directory
1755	* header and more under some conditions. So, if this code fails
1756	* you might be so lucky as to have reproduce that issue...
1757	*/
1758	RTCVDIRHDR32EX DirHdr;
1759	rc = rtDbgModCvReadAt(pThis, pThis->offDir, &DirHdr, sizeof(DirHdr));
1760	if (RT_SUCCESS(rc))
1761	{
1762	if ( DirHdr.Core.cbHdr != sizeof(DirHdr.Core)
1763	&& DirHdr.Core.cbHdr != sizeof(DirHdr))
1764	{
1765	Log(("Unexpected CV directory size: %#x [wlink screwup?]\n", DirHdr.Core.cbHdr));
1766	rc = VERR_CV_BAD_FORMAT;
1767	}
1768	if ( DirHdr.Core.cbHdr == sizeof(DirHdr)
1769	&& ( DirHdr.offNextDir != 0
1770	\|\| DirHdr.fFlags != 0) )
1771	{
1772	Log(("Extended CV directory headers fields are not zero: fFlags=%#x offNextDir=%#x [wlink screwup?]\n",
1773	DirHdr.fFlags, DirHdr.offNextDir));
1774	rc = VERR_CV_BAD_FORMAT;
1775	}
1776	if (DirHdr.Core.cbEntry != sizeof(RTCVDIRENT32))
1777	{
1778	Log(("Unexpected CV directory entry size: %#x (expected %#x) [wlink screwup?]\n", DirHdr.Core.cbEntry, sizeof(RTCVDIRENT32)));
1779	rc = VERR_CV_BAD_FORMAT;
1780	}
1781	if (DirHdr.Core.cEntries < 2 \|\| DirHdr.Core.cEntries >= _512K)
1782	{
1783	Log(("CV directory count is out of considered valid range: %#x [wlink screwup?]\n", DirHdr.Core.cEntries));
1784	rc = VERR_CV_BAD_FORMAT;
1785	}
1786	if (RT_SUCCESS(rc))
1787	{
1788	pThis->cDirEnts = DirHdr.Core.cEntries;
1789	pThis->paDirEnts = (PRTCVDIRENT32)RTMemAlloc(DirHdr.Core.cEntries * sizeof(pThis->paDirEnts[0]));
1790	if (pThis->paDirEnts)
1791	rc = rtDbgModCvReadAt(pThis, pThis->offDir + DirHdr.Core.cbHdr,
1792	pThis->paDirEnts, DirHdr.Core.cEntries * sizeof(RTCVDIRENT32));
1793	else
1794	rc = VERR_NO_MEMORY;
1795	}
1796	}
1797	}
1798
1799	if (RT_SUCCESS(rc))
1800	{
1801	uint32_t const cbDbgInfo = pThis->cbDbgInfo;
1802	uint32_t const cDirEnts = pThis->cDirEnts;
1803
1804	/*
1805	* Just sort the directory in a way we like, no need to make
1806	* complicated demands on the linker output.
1807	*/
1808	RTSortShell(pThis->paDirEnts, cDirEnts, sizeof(pThis->paDirEnts[0]), rtDbgModCvDirEntCmp, NULL);
1809
1810	/*
1811	* Basic info validation.
1812	*/
1813	uint16_t cGlobalMods = 0;
1814	uint16_t cNormalMods = 0;
1815	uint16_t iModLast = 0;
1816	Log2(("RTDbgModCv: %u (%#x) directory entries:\n", cDirEnts, cDirEnts));
1817	for (uint32_t i = 0; i < cDirEnts; i++)
1818	{
1819	PCRTCVDIRENT32 pDirEnt = &pThis->paDirEnts[i];
1820	Log2((" #%04u mod=%#06x sst=%#06x at %#010x LB %#07x %s\n",
1821	i, pDirEnt->iMod, pDirEnt->uSubSectType, pDirEnt->off, pDirEnt->cb,
1822	rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType)));
1823
1824	if ( pDirEnt->off >= cbDbgInfo
1825	\|\| pDirEnt->cb >= cbDbgInfo
1826	\|\| pDirEnt->off + pDirEnt->cb > cbDbgInfo)
1827	{
1828	Log(("CV directory entry #%u is out of bounds: %#x LB %#x, max %#x\n", i, pDirEnt->off, pDirEnt->cb, cbDbgInfo));
1829	rc = VERR_CV_BAD_FORMAT;
1830	}
1831	if ( pDirEnt->iMod == 0
1832	&& pThis->u32CvMagic != RTCVHDR_MAGIC_NB04
1833	&& pThis->u32CvMagic != RTCVHDR_MAGIC_NB02
1834	&& pThis->u32CvMagic != RTCVHDR_MAGIC_NB00)
1835	{
1836	Log(("CV directory entry #%u uses module index 0 (uSubSectType=%#x)\n", i, pDirEnt->uSubSectType));
1837	rc = VERR_CV_BAD_FORMAT;
1838	}
1839	if (pDirEnt->iMod == 0 \|\| pDirEnt->iMod == 0xffff)
1840	cGlobalMods++;
1841	else
1842	{
1843	if (pDirEnt->iMod > iModLast)
1844	{
1845	if ( pDirEnt->uSubSectType != kCvSst_Module
1846	&& pDirEnt->uSubSectType != kCvSst_OldModule)
1847	{
1848	Log(("CV directory entry #%u: expected module subsection first, found %s (%#x)\n",
1849	i, rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType), pDirEnt->uSubSectType));
1850	rc = VERR_CV_BAD_FORMAT;
1851	}
1852	if (pDirEnt->iMod != iModLast + 1)
1853	{
1854	Log(("CV directory entry #%u: skips from mod %#x to %#x modules\n", i, iModLast, pDirEnt->iMod));
1855	rc = VERR_CV_BAD_FORMAT;
1856	}
1857	iModLast = pDirEnt->iMod;
1858	}
1859	cNormalMods++;
1860	}
1861	}
1862	if (cGlobalMods == 0)
1863	{
1864	Log(("CV directory contains no global modules\n"));
1865	rc = VERR_CV_BAD_FORMAT;
1866	}
1867	if (RT_SUCCESS(rc))
1868	{
1869	Log(("CV dir stats: %u total, %u normal, %u special, iModLast=%#x (%u)\n",
1870	cDirEnts, cNormalMods, cGlobalMods, iModLast, iModLast));
1871
1872	#if 0 /* skip this stuff */
1873	/*
1874	* Validate the directory ordering.
1875	*/
1876	uint16_t i = 0;
1877
1878	/* Normal modules. */
1879	if (pThis->enmDirOrder != RTCVDIRORDER_BY_SST_MOD)
1880	{
1881	uint16_t iEndNormalMods = cNormalMods + (pThis->enmDirOrder == RTCVDIRORDER_BY_MOD_0 ? cGlobalMods : 0);
1882	while (i < iEndNormalMods)
1883	{
1884	if (pThis->paDirEnts[i].iMod == 0 \|\| pThis->paDirEnts[i].iMod == 0xffff)
1885	{
1886	Log(("CV directory entry #%u: Unexpected global module entry.\n", i));
1887	rc = VERR_CV_BAD_FORMAT;
1888	}
1889	i++;
1890	}
1891	}
1892	else
1893	{
1894	uint32_t fSeen = RT_BIT_32(kCvSst_Module - kCvSst_Module)
1895	\| RT_BIT_32(kCvSst_Libraries - kCvSst_Module)
1896	\| RT_BIT_32(kCvSst_GlobalSym - kCvSst_Module)
1897	\| RT_BIT_32(kCvSst_GlobalPub - kCvSst_Module)
1898	\| RT_BIT_32(kCvSst_GlobalTypes - kCvSst_Module)
1899	\| RT_BIT_32(kCvSst_SegName - kCvSst_Module)
1900	\| RT_BIT_32(kCvSst_SegMap - kCvSst_Module)
1901	\| RT_BIT_32(kCvSst_StaticSym - kCvSst_Module)
1902	\| RT_BIT_32(kCvSst_FileIndex - kCvSst_Module)
1903	\| RT_BIT_32(kCvSst_MPC - kCvSst_Module);
1904	uint16_t iMod = 0;
1905	uint16_t uSst = kCvSst_Module;
1906	while (i < cNormalMods)
1907	{
1908	PCRTCVDIRENT32 pDirEnt = &pThis->paDirEnts[i];
1909	if ( pDirEnt->iMod > iMod
1910	\|\| pDirEnt->iMod == iMod) /* wlink subjected to MSVC 2010 /Z7 files with multiple .debug$S. */
1911	{
1912	if (pDirEnt->uSubSectType != uSst)
1913	{
1914	Log(("CV directory entry #%u: Expected %s (%#x), found %s (%#x).\n",
1915	i, rtDbgModCvGetSubSectionName(uSst), uSst,
1916	rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType), pDirEnt->uSubSectType));
1917	rc = VERR_CV_BAD_FORMAT;
1918	}
1919	}
1920	else
1921	{
1922	uint32_t iBit = pDirEnt->uSubSectType - kCvSst_Module;
1923	if (iBit >= 32U \|\| (fSeen & RT_BIT_32(iBit)))
1924	{
1925	Log(("CV directory entry #%u: SST %s (%#x) has already been seen or is for globals.\n",
1926	i, rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType), pDirEnt->uSubSectType));
1927	rc = VERR_CV_BAD_FORMAT;
1928	}
1929	fSeen \|= RT_BIT_32(iBit);
1930	}
1931
1932	uSst = pDirEnt->uSubSectType;
1933	iMod = pDirEnt->iMod;
1934	i++;
1935	}
1936	}
1937
1938	/* New style with special modules at the end. */
1939	if (pThis->enmDirOrder != RTCVDIRORDER_BY_MOD_0)
1940	while (i < cDirEnts)
1941	{
1942	if (pThis->paDirEnts[i].iMod != 0 && pThis->paDirEnts[i].iMod != 0xffff)
1943	{
1944	Log(("CV directory entry #%u: Expected global module entry, not %#x.\n", i,
1945	pThis->paDirEnts[i].iMod));
1946	rc = VERR_CV_BAD_FORMAT;
1947	}
1948	i++;
1949	}
1950	#endif
1951	}
1952	}
1953
1954	return rc;
1955	}
1956
1957
1958	static int rtDbgModCvLoadCodeViewInfo(PRTDBGMODCV pThis)
1959	{
1960	/*
1961	* Load the directory, the segment map (if any) and then scan for segments
1962	* if necessary.
1963	*/
1964	int rc = rtDbgModCvLoadDirectory(pThis);
1965	if (RT_SUCCESS(rc))
1966	rc = rtDbgModCvLoadSegmentMap(pThis);
1967	if (RT_SUCCESS(rc) && !pThis->fHaveLoadedSegments)
1968	{
1969	rc = VERR_CV_TODO; /** @todo Scan anything containing address, in particular sstSegMap and sstModule,
1970	* and reconstruct the segments from that information. */
1971	pThis->cbImage = 0x1000;
1972	rc = VINF_SUCCESS;
1973	}
1974
1975	/*
1976	* Process the directory.
1977	*/
1978	for (uint32_t i = 0; RT_SUCCESS(rc) && i < pThis->cDirEnts; i++)
1979	{
1980	PCRTCVDIRENT32 pDirEnt = &pThis->paDirEnts[i];
1981	Log3(("Processing module %#06x subsection #%04u %s\n", pDirEnt->iMod, i, rtDbgModCvGetSubSectionName(pDirEnt->uSubSectType)));
1982	PFNDBGMODCVSUBSECTCALLBACK pfnCallback = NULL;
1983	switch (pDirEnt->uSubSectType)
1984	{
1985	case kCvSst_GlobalPub:
1986	case kCvSst_GlobalSym:
1987	case kCvSst_StaticSym:
1988	pfnCallback = rtDbgModCvSs_GlobalPub_GlobalSym_StaticSym;
1989	break;
1990	case kCvSst_Module:
1991	pfnCallback = rtDbgModCvSs_Module;
1992	break;
1993	case kCvSst_PublicSym:
1994	case kCvSst_Symbols:
1995	case kCvSst_AlignSym:
1996	pfnCallback = rtDbgModCvSs_Symbols_PublicSym_AlignSym;
1997	break;
1998
1999	case kCvSst_OldModule:
2000	case kCvSst_OldPublic:
2001	case kCvSst_OldTypes:
2002	case kCvSst_OldSymbols:
2003	case kCvSst_OldSrcLines:
2004	case kCvSst_OldLibraries:
2005	case kCvSst_OldImports:
2006	case kCvSst_OldCompacted:
2007	case kCvSst_OldSrcLnSeg:
2008	case kCvSst_OldSrcLines3:
2009	/** @todo implement more. */
2010	break;
2011
2012	case kCvSst_Types:
2013	case kCvSst_Public:
2014	case kCvSst_SrcLnSeg:
2015	/** @todo implement more. */
2016	break;
2017	case kCvSst_SrcModule:
2018	pfnCallback = rtDbgModCvSs_SrcModule;
2019	break;
2020	case kCvSst_Libraries:
2021	case kCvSst_GlobalTypes:
2022	case kCvSst_MPC:
2023	case kCvSst_PreComp:
2024	case kCvSst_PreCompMap:
2025	case kCvSst_OffsetMap16:
2026	case kCvSst_OffsetMap32:
2027	case kCvSst_FileIndex:
2028
2029	default:
2030	/** @todo implement more. */
2031	break;
2032
2033	/* Skip because we've already processed them: */
2034	case kCvSst_SegMap:
2035	case kCvSst_SegName:
2036	pfnCallback = NULL;
2037	break;
2038	}
2039
2040	if (pfnCallback)
2041	{
2042	void *pvSubSect;
2043	rc = rtDbgModCvReadAtAlloc(pThis, pDirEnt->off, &pvSubSect, pDirEnt->cb);
2044	if (RT_SUCCESS(rc))
2045	{
2046	rc = pfnCallback(pThis, pvSubSect, pDirEnt->cb, pDirEnt);
2047	RTMemFree(pvSubSect);
2048	}
2049	}
2050	}
2051
2052	/*
2053	* Free temporary parsing objects.
2054	*/
2055	if (pThis->pbSrcInfo)
2056	{
2057	RTMemFree(pThis->pbSrcInfo);
2058	pThis->pbSrcInfo = NULL;
2059	pThis->cbSrcInfo = 0;
2060	pThis->cbSrcInfoAlloc = 0;
2061	}
2062	if (pThis->pchSrcStrings)
2063	{
2064	RTMemFree(pThis->pchSrcStrings);
2065	pThis->pchSrcStrings = NULL;
2066	pThis->cbSrcStrings = 0;
2067	pThis->cbSrcStringsAlloc = 0;
2068	}
2069
2070	return rc;
2071	}
2072
2073
2074	/*
2075	*
2076	* COFF Debug Info Parsing.
2077	* COFF Debug Info Parsing.
2078	* COFF Debug Info Parsing.
2079	*
2080	*/
2081
2082	#ifdef LOG_ENABLED
2083	static const char *rtDbgModCvGetCoffStorageClassName(uint8_t bStorageClass)
2084	{
2085	switch (bStorageClass)
2086	{
2087	case IMAGE_SYM_CLASS_END_OF_FUNCTION: return "END_OF_FUNCTION";
2088	case IMAGE_SYM_CLASS_NULL: return "NULL";
2089	case IMAGE_SYM_CLASS_AUTOMATIC: return "AUTOMATIC";
2090	case IMAGE_SYM_CLASS_EXTERNAL: return "EXTERNAL";
2091	case IMAGE_SYM_CLASS_STATIC: return "STATIC";
2092	case IMAGE_SYM_CLASS_REGISTER: return "REGISTER";
2093	case IMAGE_SYM_CLASS_EXTERNAL_DEF: return "EXTERNAL_DEF";
2094	case IMAGE_SYM_CLASS_LABEL: return "LABEL";
2095	case IMAGE_SYM_CLASS_UNDEFINED_LABEL: return "UNDEFINED_LABEL";
2096	case IMAGE_SYM_CLASS_MEMBER_OF_STRUCT: return "MEMBER_OF_STRUCT";
2097	case IMAGE_SYM_CLASS_ARGUMENT: return "ARGUMENT";
2098	case IMAGE_SYM_CLASS_STRUCT_TAG: return "STRUCT_TAG";
2099	case IMAGE_SYM_CLASS_MEMBER_OF_UNION: return "MEMBER_OF_UNION";
2100	case IMAGE_SYM_CLASS_UNION_TAG: return "UNION_TAG";
2101	case IMAGE_SYM_CLASS_TYPE_DEFINITION: return "TYPE_DEFINITION";
2102	case IMAGE_SYM_CLASS_UNDEFINED_STATIC: return "UNDEFINED_STATIC";
2103	case IMAGE_SYM_CLASS_ENUM_TAG: return "ENUM_TAG";
2104	case IMAGE_SYM_CLASS_MEMBER_OF_ENUM: return "MEMBER_OF_ENUM";
2105	case IMAGE_SYM_CLASS_REGISTER_PARAM: return "REGISTER_PARAM";
2106	case IMAGE_SYM_CLASS_BIT_FIELD: return "BIT_FIELD";
2107	case IMAGE_SYM_CLASS_FAR_EXTERNAL: return "FAR_EXTERNAL";
2108	case IMAGE_SYM_CLASS_BLOCK: return "BLOCK";
2109	case IMAGE_SYM_CLASS_FUNCTION: return "FUNCTION";
2110	case IMAGE_SYM_CLASS_END_OF_STRUCT: return "END_OF_STRUCT";
2111	case IMAGE_SYM_CLASS_FILE: return "FILE";
2112	case IMAGE_SYM_CLASS_SECTION: return "SECTION";
2113	case IMAGE_SYM_CLASS_WEAK_EXTERNAL: return "WEAK_EXTERNAL";
2114	case IMAGE_SYM_CLASS_CLR_TOKEN: return "CLR_TOKEN";
2115	}
2116
2117	static char s_szName[32];
2118	RTStrPrintf(s_szName, sizeof(s_szName), "Unknown%#04x", bStorageClass);
2119	return s_szName;
2120	}
2121	#endif /* LOG_ENABLED */
2122
2123
2124	/**
2125	* Adds a chunk of COFF line numbers.
2126	*
2127	* @param pThis The COFF/CodeView reader instance.
2128	* @param pszFile The source file name.
2129	* @param iSection The section number.
2130	* @param paLines Pointer to the first line number table entry.
2131	* @param cLines The number of line number table entries to add.
2132	*/
2133	static void rtDbgModCvAddCoffLineNumbers(PRTDBGMODCV pThis, const char *pszFile, uint32_t iSection,
2134	PCIMAGE_LINENUMBER paLines, uint32_t cLines)
2135	{
2136	RT_NOREF_PV(iSection);
2137	Log4(("Adding %u line numbers in section #%u for %s\n", cLines, iSection, pszFile));
2138	PCIMAGE_LINENUMBER pCur = paLines;
2139	while (cLines-- > 0)
2140	{
2141	if (pCur->Linenumber)
2142	{
2143	int rc = RTDbgModLineAdd(pThis->hCnt, pszFile, pCur->Linenumber, RTDBGSEGIDX_RVA, pCur->Type.VirtualAddress, NULL);
2144	Log4((" %#010x: %u [%Rrc]\n", pCur->Type.VirtualAddress, pCur->Linenumber, rc)); NOREF(rc);
2145	}
2146	pCur++;
2147	}
2148	}
2149
2150
2151	/**
2152	* Adds a COFF symbol.
2153	*
2154	* @returns IPRT status (ignored)
2155	* @param pThis The COFF/CodeView reader instance.
2156	* @param idxSeg IPRT RVA or ABS segment index indicator.
2157	* @param uValue The symbol value.
2158	* @param pszName The symbol name.
2159	*/
2160	static int rtDbgModCvAddCoffSymbol(PRTDBGMODCV pThis, uint32_t idxSeg, uint32_t uValue, const char *pszName)
2161	{
2162	int rc = RTDbgModSymbolAdd(pThis->hCnt, pszName, idxSeg, uValue, 0, 0 /fFlags/, NULL);
2163	Log(("Symbol: %s:%08x %s [%Rrc]\n", idxSeg == RTDBGSEGIDX_RVA ? "rva" : "abs", uValue, pszName, rc));
2164	if (rc == VERR_DBG_ADDRESS_CONFLICT \|\| rc == VERR_DBG_DUPLICATE_SYMBOL)
2165	rc = VINF_SUCCESS;
2166	return rc;
2167	}
2168
2169
2170	/**
2171	* Processes the COFF symbol table.
2172	*
2173	* @returns IPRT status code
2174	* @param pThis The COFF/CodeView reader instance.
2175	* @param paSymbols Pointer to the symbol table.
2176	* @param cSymbols The number of entries in the symbol table.
2177	* @param paLines Pointer to the line number table.
2178	* @param cLines The number of entires in the line number table.
2179	* @param pszzStrTab Pointer to the string table.
2180	* @param cbStrTab Size of the string table.
2181	*/
2182	static int rtDbgModCvProcessCoffSymbolTable(PRTDBGMODCV pThis,
2183	PCIMAGE_SYMBOL paSymbols, uint32_t cSymbols,
2184	PCIMAGE_LINENUMBER paLines, uint32_t cLines,
2185	const char *pszzStrTab, uint32_t cbStrTab)
2186	{
2187	Log3(("Processing COFF symbol table with %#x symbols\n", cSymbols));
2188
2189	/*
2190	* Making some bold assumption that the line numbers for the section in
2191	* the file are allocated sequentially, we do multiple passes until we've
2192	* gathered them all.
2193	*/
2194	int rc = VINF_SUCCESS;
2195	uint32_t cSections = 1;
2196	uint32_t iLineSect = 1;
2197	uint32_t iLine = 0;
2198	do
2199	{
2200	/*
2201	* Process the symbols.
2202	*/
2203	char szShort[9];
2204	char szFile[RTPATH_MAX];
2205	uint32_t iSymbol = 0;
2206	szFile[0] = '\0';
2207	szShort[8] = '\0'; /* avoid having to terminate it all the time. */
2208
2209	while (iSymbol < cSymbols && RT_SUCCESS(rc))
2210	{
2211	/* Copy the symbol in and hope it works around the misalignment
2212	issues everywhere. */
2213	IMAGE_SYMBOL Sym;
2214	memcpy(&Sym, &paSymbols[iSymbol], sizeof(Sym));
2215	RTDBGMODCV_CHECK_NOMSG_RET_BF(Sym.NumberOfAuxSymbols < cSymbols);
2216
2217	/* Calc a zero terminated symbol name. */
2218	const char *pszName;
2219	if (Sym.N.Name.Short)
2220	pszName = (const char *)memcpy(szShort, &Sym.N, 8);
2221	else
2222	{
2223	RTDBGMODCV_CHECK_NOMSG_RET_BF(Sym.N.Name.Long < cbStrTab);
2224	pszName = pszzStrTab + Sym.N.Name.Long;
2225	}
2226
2227	/* Only log stuff and count sections the in the first pass.*/
2228	if (iLineSect == 1)
2229	{
2230	Log3(("%04x: s=%#06x v=%#010x t=%#06x a=%#04x c=%#04x (%s) name='%s'\n",
2231	iSymbol, Sym.SectionNumber, Sym.Value, Sym.Type, Sym.NumberOfAuxSymbols,
2232	Sym.StorageClass, rtDbgModCvGetCoffStorageClassName(Sym.StorageClass), pszName));
2233	if ((int16_t)cSections <= Sym.SectionNumber && Sym.SectionNumber > 0)
2234	cSections = Sym.SectionNumber + 1;
2235	}
2236
2237	/*
2238	* Use storage class to pick what we need (which isn't much because,
2239	* MS only provides a very restricted set of symbols).
2240	*/
2241	IMAGE_AUX_SYMBOL Aux;
2242	switch (Sym.StorageClass)
2243	{
2244	case IMAGE_SYM_CLASS_NULL:
2245	/* a NOP */
2246	break;
2247
2248	case IMAGE_SYM_CLASS_FILE:
2249	{
2250	/* Change the current file name (for line numbers). Pretend
2251	ANSI and ISO-8859-1 are similar enough for out purposes... */
2252	RTDBGMODCV_CHECK_NOMSG_RET_BF(Sym.NumberOfAuxSymbols > 0);
2253	const char pszFile = (const char )&paSymbols[iSymbol + 1];
2254	char *pszDst = szFile;
2255	rc = RTLatin1ToUtf8Ex(pszFile, Sym.NumberOfAuxSymbols * sizeof(IMAGE_SYMBOL), &pszDst, sizeof(szFile), NULL);
2256	if (RT_FAILURE(rc))
2257	Log(("Error converting COFF filename: %Rrc\n", rc));
2258	else if (iLineSect == 1)
2259	Log3((" filename='%s'\n", szFile));
2260	break;
2261	}
2262
2263	case IMAGE_SYM_CLASS_STATIC:
2264	if ( Sym.NumberOfAuxSymbols == 1
2265	&& ( iLineSect == 1
2266	\|\| Sym.SectionNumber == (int32_t)iLineSect) )
2267	{
2268	memcpy(&Aux, &paSymbols[iSymbol + 1], sizeof(Aux));
2269	if (iLineSect == 1)
2270	Log3((" section: cb=%#010x #relocs=%#06x #lines=%#06x csum=%#x num=%#x sel=%x rvd=%u\n",
2271	Aux.Section.Length, Aux.Section.NumberOfRelocations,
2272	Aux.Section.NumberOfLinenumbers,
2273	Aux.Section.CheckSum,
2274	RT_MAKE_U32(Aux.Section.Number, Aux.Section.HighNumber),
2275	Aux.Section.Selection,
2276	Aux.Section.bReserved));
2277	if ( Sym.SectionNumber == (int32_t)iLineSect
2278	&& Aux.Section.NumberOfLinenumbers > 0)
2279	{
2280	uint32_t cLinesToAdd = RT_MIN(Aux.Section.NumberOfLinenumbers, cLines - iLine);
2281	if (iLine < cLines && szFile[0])
2282	rtDbgModCvAddCoffLineNumbers(pThis, szFile, iLineSect, &paLines[iLine], cLinesToAdd);
2283	iLine += cLinesToAdd;
2284	}
2285	}
2286	/* Not so sure about the quality here, but might be useful. */
2287	else if ( iLineSect == 1
2288	&& Sym.NumberOfAuxSymbols == 0
2289	&& Sym.SectionNumber != IMAGE_SYM_UNDEFINED
2290	&& Sym.SectionNumber != IMAGE_SYM_ABSOLUTE
2291	&& Sym.SectionNumber != IMAGE_SYM_DEBUG
2292	&& Sym.Value > 0
2293	&& *pszName)
2294	rtDbgModCvAddCoffSymbol(pThis, RTDBGSEGIDX_RVA, Sym.Value, pszName);
2295	break;
2296
2297	case IMAGE_SYM_CLASS_EXTERNAL:
2298	/* Add functions (first pass only). */
2299	if ( iLineSect == 1
2300	&& (ISFCN(Sym.Type) \|\| Sym.Type == 0)
2301	&& Sym.NumberOfAuxSymbols == 0
2302	&& *pszName )
2303	{
2304	if (Sym.SectionNumber == IMAGE_SYM_ABSOLUTE)
2305	rtDbgModCvAddCoffSymbol(pThis, RTDBGSEGIDX_ABS, Sym.Value, pszName);
2306	else if ( Sym.SectionNumber != IMAGE_SYM_UNDEFINED
2307	&& Sym.SectionNumber != IMAGE_SYM_DEBUG)
2308	rtDbgModCvAddCoffSymbol(pThis, RTDBGSEGIDX_RVA, Sym.Value, pszName);
2309	}
2310	break;
2311
2312	case IMAGE_SYM_CLASS_FUNCTION:
2313	/* Not sure this is really used. */
2314	break;
2315
2316	case IMAGE_SYM_CLASS_END_OF_FUNCTION:
2317	case IMAGE_SYM_CLASS_AUTOMATIC:
2318	case IMAGE_SYM_CLASS_REGISTER:
2319	case IMAGE_SYM_CLASS_EXTERNAL_DEF:
2320	case IMAGE_SYM_CLASS_LABEL:
2321	case IMAGE_SYM_CLASS_UNDEFINED_LABEL:
2322	case IMAGE_SYM_CLASS_MEMBER_OF_STRUCT:
2323	case IMAGE_SYM_CLASS_ARGUMENT:
2324	case IMAGE_SYM_CLASS_STRUCT_TAG:
2325	case IMAGE_SYM_CLASS_MEMBER_OF_UNION:
2326	case IMAGE_SYM_CLASS_UNION_TAG:
2327	case IMAGE_SYM_CLASS_TYPE_DEFINITION:
2328	case IMAGE_SYM_CLASS_UNDEFINED_STATIC:
2329	case IMAGE_SYM_CLASS_ENUM_TAG:
2330	case IMAGE_SYM_CLASS_MEMBER_OF_ENUM:
2331	case IMAGE_SYM_CLASS_REGISTER_PARAM:
2332	case IMAGE_SYM_CLASS_BIT_FIELD:
2333	case IMAGE_SYM_CLASS_FAR_EXTERNAL:
2334	case IMAGE_SYM_CLASS_BLOCK:
2335	case IMAGE_SYM_CLASS_END_OF_STRUCT:
2336	case IMAGE_SYM_CLASS_SECTION:
2337	case IMAGE_SYM_CLASS_WEAK_EXTERNAL:
2338	case IMAGE_SYM_CLASS_CLR_TOKEN:
2339	/* Not used by MS, I think. */
2340	break;
2341
2342	default:
2343	Log(("RTDbgCv: Unexpected COFF storage class %#x (%u)\n", Sym.StorageClass, Sym.StorageClass));
2344	break;
2345	}
2346
2347	/* next symbol */
2348	iSymbol += 1 + Sym.NumberOfAuxSymbols;
2349	}
2350
2351	/* Next section with line numbers. */
2352	iLineSect++;
2353	} while (iLine < cLines && iLineSect < cSections && RT_SUCCESS(rc));
2354
2355	return rc;
2356	}
2357
2358
2359	/**
2360	* Loads COFF debug information into the container.
2361	*
2362	* @returns IPRT status code.
2363	* @param pThis The COFF/CodeView debug reader instance.
2364	*/
2365	static int rtDbgModCvLoadCoffInfo(PRTDBGMODCV pThis)
2366	{
2367	/*
2368	* Read the whole section into memory.
2369	* Note! Cannot use rtDbgModCvReadAt or rtDbgModCvReadAtAlloc here.
2370	*/
2371	int rc;
2372	uint8_t pbDbgSect = (uint8_t )RTMemAlloc(pThis->cbCoffDbgInfo);
2373	if (pbDbgSect)
2374	{
2375	if (pThis->hFile == NIL_RTFILE)
2376	rc = pThis->pMod->pImgVt->pfnReadAt(pThis->pMod, UINT32_MAX, pThis->offCoffDbgInfo, pbDbgSect, pThis->cbCoffDbgInfo);
2377	else
2378	rc = RTFileReadAt(pThis->hFile, pThis->offCoffDbgInfo, pbDbgSect, pThis->cbCoffDbgInfo, NULL);
2379	if (RT_SUCCESS(rc))
2380	{
2381	/* The string table follows after the symbol table. */
2382	const char pszzStrTab = (const char )( pbDbgSect
2383	+ pThis->CoffHdr.LvaToFirstSymbol
2384	+ pThis->CoffHdr.NumberOfSymbols * sizeof(IMAGE_SYMBOL));
2385	uint32_t cbStrTab = (uint32_t)((uintptr_t)(pbDbgSect + pThis->cbCoffDbgInfo) - (uintptr_t)pszzStrTab);
2386	/** @todo The symbol table starts with a size. Read it and checking. Also verify
2387	* that the symtab ends with a terminator character. */
2388
2389	rc = rtDbgModCvProcessCoffSymbolTable(pThis,
2390	(PCIMAGE_SYMBOL)(pbDbgSect + pThis->CoffHdr.LvaToFirstSymbol),
2391	pThis->CoffHdr.NumberOfSymbols,
2392	(PCIMAGE_LINENUMBER)(pbDbgSect + pThis->CoffHdr.LvaToFirstLinenumber),
2393	pThis->CoffHdr.NumberOfLinenumbers,
2394	pszzStrTab, cbStrTab);
2395	}
2396	RTMemFree(pbDbgSect);
2397	}
2398	else
2399	rc = VERR_NO_MEMORY;
2400	return rc;
2401	}
2402
2403
2404
2405
2406
2407
2408	/*
2409	*
2410	* CodeView Debug module implementation.
2411	* CodeView Debug module implementation.
2412	* CodeView Debug module implementation.
2413	*
2414	*/
2415
2416
2417	/** @interface_method_impl{RTDBGMODVTDBG,pfnUnwindFrame} */
2418	static DECLCALLBACK(int) rtDbgModCv_UnwindFrame(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTDBGUNWINDSTATE pState)
2419	{
2420	RT_NOREF(pMod, iSeg, off, pState);
2421	return VERR_DBG_NO_UNWIND_INFO;
2422	}
2423
2424
2425	/** @interface_method_impl{RTDBGMODVTDBG,pfnLineByAddr} */
2426	static DECLCALLBACK(int) rtDbgModCv_LineByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off,
2427	PRTINTPTR poffDisp, PRTDBGLINE pLineInfo)
2428	{
2429	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2430	return RTDbgModLineByAddr(pThis->hCnt, iSeg, off, poffDisp, pLineInfo);
2431	}
2432
2433
2434	/** @interface_method_impl{RTDBGMODVTDBG,pfnLineByOrdinal} */
2435	static DECLCALLBACK(int) rtDbgModCv_LineByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo)
2436	{
2437	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2438	return RTDbgModLineByOrdinal(pThis->hCnt, iOrdinal, pLineInfo);
2439	}
2440
2441
2442	/** @interface_method_impl{RTDBGMODVTDBG,pfnLineCount} */
2443	static DECLCALLBACK(uint32_t) rtDbgModCv_LineCount(PRTDBGMODINT pMod)
2444	{
2445	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2446	return RTDbgModLineCount(pThis->hCnt);
2447	}
2448
2449
2450	/** @interface_method_impl{RTDBGMODVTDBG,pfnLineAdd} */
2451	static DECLCALLBACK(int) rtDbgModCv_LineAdd(PRTDBGMODINT pMod, const char *pszFile, size_t cchFile, uint32_t uLineNo,
2452	uint32_t iSeg, RTUINTPTR off, uint32_t *piOrdinal)
2453	{
2454	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2455	Assert(!pszFile[cchFile]); NOREF(cchFile);
2456	return RTDbgModLineAdd(pThis->hCnt, pszFile, uLineNo, iSeg, off, piOrdinal);
2457	}
2458
2459
2460	/** @interface_method_impl{RTDBGMODVTDBG,pfnSymbolByAddr} */
2461	static DECLCALLBACK(int) rtDbgModCv_SymbolByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off, uint32_t fFlags,
2462	PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo)
2463	{
2464	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2465	return RTDbgModSymbolByAddr(pThis->hCnt, iSeg, off, fFlags, poffDisp, pSymInfo);
2466	}
2467
2468
2469	/** @interface_method_impl{RTDBGMODVTDBG,pfnSymbolByName} */
2470	static DECLCALLBACK(int) rtDbgModCv_SymbolByName(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol,
2471	PRTDBGSYMBOL pSymInfo)
2472	{
2473	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2474	Assert(!pszSymbol[cchSymbol]); RT_NOREF_PV(cchSymbol);
2475	return RTDbgModSymbolByName(pThis->hCnt, pszSymbol/, cchSymbol/, pSymInfo);
2476	}
2477
2478
2479	/** @interface_method_impl{RTDBGMODVTDBG,pfnSymbolByOrdinal} */
2480	static DECLCALLBACK(int) rtDbgModCv_SymbolByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo)
2481	{
2482	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2483	return RTDbgModSymbolByOrdinal(pThis->hCnt, iOrdinal, pSymInfo);
2484	}
2485
2486
2487	/** @interface_method_impl{RTDBGMODVTDBG,pfnSymbolCount} */
2488	static DECLCALLBACK(uint32_t) rtDbgModCv_SymbolCount(PRTDBGMODINT pMod)
2489	{
2490	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2491	return RTDbgModSymbolCount(pThis->hCnt);
2492	}
2493
2494
2495	/** @interface_method_impl{RTDBGMODVTDBG,pfnSymbolAdd} */
2496	static DECLCALLBACK(int) rtDbgModCv_SymbolAdd(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol,
2497	RTDBGSEGIDX iSeg, RTUINTPTR off, RTUINTPTR cb, uint32_t fFlags,
2498	uint32_t *piOrdinal)
2499	{
2500	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2501	Assert(!pszSymbol[cchSymbol]); NOREF(cchSymbol);
2502	return RTDbgModSymbolAdd(pThis->hCnt, pszSymbol, iSeg, off, cb, fFlags, piOrdinal);
2503	}
2504
2505
2506	/** @interface_method_impl{RTDBGMODVTDBG,pfnSegmentByIndex} */
2507	static DECLCALLBACK(int) rtDbgModCv_SegmentByIndex(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo)
2508	{
2509	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2510	return RTDbgModSegmentByIndex(pThis->hCnt, iSeg, pSegInfo);
2511	}
2512
2513
2514	/** @interface_method_impl{RTDBGMODVTDBG,pfnSegmentCount} */
2515	static DECLCALLBACK(RTDBGSEGIDX) rtDbgModCv_SegmentCount(PRTDBGMODINT pMod)
2516	{
2517	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2518	return RTDbgModSegmentCount(pThis->hCnt);
2519	}
2520
2521
2522	/** @interface_method_impl{RTDBGMODVTDBG,pfnSegmentAdd} */
2523	static DECLCALLBACK(int) rtDbgModCv_SegmentAdd(PRTDBGMODINT pMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName, size_t cchName,
2524	uint32_t fFlags, PRTDBGSEGIDX piSeg)
2525	{
2526	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2527	Assert(!pszName[cchName]); NOREF(cchName);
2528	return RTDbgModSegmentAdd(pThis->hCnt, uRva, cb, pszName, fFlags, piSeg);
2529	}
2530
2531
2532	/** @interface_method_impl{RTDBGMODVTDBG,pfnImageSize} */
2533	static DECLCALLBACK(RTUINTPTR) rtDbgModCv_ImageSize(PRTDBGMODINT pMod)
2534	{
2535	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2536	if (pThis->cbImage)
2537	return pThis->cbImage;
2538	return RTDbgModImageSize(pThis->hCnt);
2539	}
2540
2541
2542	/** @interface_method_impl{RTDBGMODVTDBG,pfnRvaToSegOff} */
2543	static DECLCALLBACK(RTDBGSEGIDX) rtDbgModCv_RvaToSegOff(PRTDBGMODINT pMod, RTUINTPTR uRva, PRTUINTPTR poffSeg)
2544	{
2545	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2546	return RTDbgModRvaToSegOff(pThis->hCnt, uRva, poffSeg);
2547	}
2548
2549
2550	/** @interface_method_impl{RTDBGMODVTDBG,pfnClose} */
2551	static DECLCALLBACK(int) rtDbgModCv_Close(PRTDBGMODINT pMod)
2552	{
2553	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
2554
2555	RTDbgModRelease(pThis->hCnt);
2556	if (pThis->hFile != NIL_RTFILE)
2557	RTFileClose(pThis->hFile);
2558	RTMemFree(pThis->paDirEnts);
2559	RTMemFree(pThis);
2560
2561	pMod->pvDbgPriv = NULL; /* for internal use */
2562	return VINF_SUCCESS;
2563	}
2564
2565
2566	/*
2567	*
2568	* Probing code used by rtDbgModCv_TryOpen.
2569	* Probing code used by rtDbgModCv_TryOpen.
2570	*
2571	*/
2572
2573
2574
2575	/**
2576	* @callback_method_impl{FNRTLDRENUMSEGS, Used to add segments from the image}
2577	*/
2578	static DECLCALLBACK(int) rtDbgModCvAddSegmentsCallback(RTLDRMOD hLdrMod, PCRTLDRSEG pSeg, void *pvUser)
2579	{
2580	PRTDBGMODCV pThis = (PRTDBGMODCV)pvUser;
2581	Log(("Segment %s: LinkAddress=%#llx RVA=%#llx cb=%#llx\n",
2582	pSeg->pszName, (uint64_t)pSeg->LinkAddress, (uint64_t)pSeg->RVA, pSeg->cb));
2583	NOREF(hLdrMod);
2584
2585	/* If the segment doesn't have a mapping, just add a dummy so the indexing
2586	works out correctly (same as for the image). */
2587	if (pSeg->RVA == NIL_RTLDRADDR)
2588	return RTDbgModSegmentAdd(pThis->hCnt, 0, 0, pSeg->pszName, 0 /fFlags/, NULL);
2589
2590	RTLDRADDR cb = RT_MAX(pSeg->cb, pSeg->cbMapped);
2591	return RTDbgModSegmentAdd(pThis->hCnt, pSeg->RVA, cb, pSeg->pszName, 0 /fFlags/, NULL);
2592	}
2593
2594
2595	/**
2596	* Copies the sections over from the DBG file.
2597	*
2598	* Called if we don't have an associated executable image.
2599	*
2600	* @returns IPRT status code.
2601	* @param pThis The CV module instance.
2602	* @param pDbgHdr The DBG file header.
2603	* @param pszFilename The filename (for logging).
2604	*/
2605	static int rtDbgModCvAddSegmentsFromDbg(PRTDBGMODCV pThis, PCIMAGE_SEPARATE_DEBUG_HEADER pDbgHdr, const char *pszFilename)
2606	{
2607	RT_NOREF_PV(pszFilename);
2608
2609	/*
2610	* Validate the header fields a little.
2611	*/
2612	if ( pDbgHdr->NumberOfSections < 1
2613	\|\| pDbgHdr->NumberOfSections > 4096)
2614	{
2615	Log(("RTDbgModCv: Bad NumberOfSections: %d\n", pDbgHdr->NumberOfSections));
2616	return VERR_CV_BAD_FORMAT;
2617	}
2618	if (!RT_IS_POWER_OF_TWO(pDbgHdr->SectionAlignment))
2619	{
2620	Log(("RTDbgModCv: Bad SectionAlignment: %#x\n", pDbgHdr->SectionAlignment));
2621	return VERR_CV_BAD_FORMAT;
2622	}
2623
2624	/*
2625	* Read the section table.
2626	*/
2627	size_t cbShs = pDbgHdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
2628	PIMAGE_SECTION_HEADER paShs = (PIMAGE_SECTION_HEADER)RTMemAlloc(cbShs);
2629	if (!paShs)
2630	return VERR_NO_MEMORY;
2631	int rc = RTFileReadAt(pThis->hFile, sizeof(*pDbgHdr), paShs, cbShs, NULL);
2632	if (RT_SUCCESS(rc))
2633	{
2634	/*
2635	* Do some basic validation.
2636	*/
2637	uint32_t cbHeaders = 0;
2638	uint32_t uRvaPrev = 0;
2639	for (uint32_t i = 0; i < pDbgHdr->NumberOfSections; i++)
2640	{
2641	Log3(("RTDbgModCv: Section #%02u %#010x LB %#010x %.*s\n",
2642	i, paShs[i].VirtualAddress, paShs[i].Misc.VirtualSize, sizeof(paShs[i].Name), paShs[i].Name));
2643
2644	if (paShs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD)
2645	continue;
2646
2647	if (paShs[i].VirtualAddress < uRvaPrev)
2648	{
2649	Log(("RTDbgModCv: %s: Overlap or soring error, VirtualAddress=%#x uRvaPrev=%#x - section #%d '%.*s'!!!\n",
2650	pszFilename, paShs[i].VirtualAddress, uRvaPrev, i, sizeof(paShs[i].Name), paShs[i].Name));
2651	rc = VERR_CV_BAD_FORMAT;
2652	}
2653	else if ( paShs[i].VirtualAddress > pDbgHdr->SizeOfImage
2654	\|\| paShs[i].Misc.VirtualSize > pDbgHdr->SizeOfImage
2655	\|\| paShs[i].VirtualAddress + paShs[i].Misc.VirtualSize > pDbgHdr->SizeOfImage)
2656	{
2657	Log(("RTDbgModCv: %s: VirtualAddress=%#x VirtualSize=%#x (total %x) - beyond image size (%#x) - section #%d '%.*s'!!!\n",
2658	pszFilename, paShs[i].VirtualAddress, paShs[i].Misc.VirtualSize,
2659	paShs[i].VirtualAddress + paShs[i].Misc.VirtualSize,
2660	pThis->cbImage, i, sizeof(paShs[i].Name), paShs[i].Name));
2661	rc = VERR_CV_BAD_FORMAT;
2662	}
2663	else if (paShs[i].VirtualAddress & (pDbgHdr->SectionAlignment - 1))
2664	{
2665	Log(("RTDbgModCv: %s: VirtualAddress=%#x misaligned (%#x) - section #%d '%.*s'!!!\n",
2666	pszFilename, paShs[i].VirtualAddress, pDbgHdr->SectionAlignment, i, sizeof(paShs[i].Name), paShs[i].Name));
2667	rc = VERR_CV_BAD_FORMAT;
2668	}
2669	else
2670	{
2671	if (uRvaPrev == 0)
2672	cbHeaders = paShs[i].VirtualAddress;
2673	uRvaPrev = paShs[i].VirtualAddress + paShs[i].Misc.VirtualSize;
2674	continue;
2675	}
2676	}
2677	if (RT_SUCCESS(rc) && uRvaPrev == 0)
2678	{
2679	Log(("RTDbgModCv: %s: No loadable sections.\n", pszFilename));
2680	rc = VERR_CV_BAD_FORMAT;
2681	}
2682	if (RT_SUCCESS(rc) && cbHeaders == 0)
2683	{
2684	Log(("RTDbgModCv: %s: No space for PE headers.\n", pszFilename));
2685	rc = VERR_CV_BAD_FORMAT;
2686	}
2687	if (RT_SUCCESS(rc))
2688	{
2689	/*
2690	* Add sections.
2691	*/
2692	rc = RTDbgModSegmentAdd(pThis->hCnt, 0, cbHeaders, "NtHdrs", 0 /fFlags/, NULL);
2693	for (uint32_t i = 0; RT_SUCCESS(rc) && i < pDbgHdr->NumberOfSections; i++)
2694	{
2695	char szName[sizeof(paShs[i].Name) + 1];
2696	memcpy(szName, paShs[i].Name, sizeof(paShs[i].Name));
2697	szName[sizeof(szName) - 1] = '\0';
2698
2699	if (paShs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD)
2700	rc = RTDbgModSegmentAdd(pThis->hCnt, 0, 0, szName, 0 /fFlags/, NULL);
2701	else
2702	rc = RTDbgModSegmentAdd(pThis->hCnt, paShs[i].VirtualAddress, paShs[i].Misc.VirtualSize, szName,
2703	0 /fFlags/, NULL);
2704	}
2705	if (RT_SUCCESS(rc))
2706	pThis->fHaveLoadedSegments = true;
2707	}
2708	}
2709
2710	RTMemFree(paShs);
2711	return rc;
2712	}
2713
2714
2715	/**
2716	* Instantiates the CV/COFF reader.
2717	*
2718	* @returns IPRT status code
2719	* @param pDbgMod The debug module instance.
2720	* @param enmFileType The type of input file.
2721	* @param hFile The file handle, NIL_RTFILE of image.
2722	* @param ppThis Where to return the reader instance.
2723	*/
2724	static int rtDbgModCvCreateInstance(PRTDBGMODINT pDbgMod, RTCVFILETYPE enmFileType, RTFILE hFile, PRTDBGMODCV *ppThis)
2725	{
2726	/*
2727	* Do we already have an instance? Happens if we find multiple debug
2728	* formats we support.
2729	*/
2730	PRTDBGMODCV pThis = (PRTDBGMODCV)pDbgMod->pvDbgPriv;
2731	if (pThis)
2732	{
2733	Assert(pThis->enmType == enmFileType);
2734	Assert(pThis->hFile == hFile);
2735	Assert(pThis->pMod == pDbgMod);
2736	*ppThis = pThis;
2737	return VINF_SUCCESS;
2738	}
2739
2740	/*
2741	* Create a new instance.
2742	*/
2743	pThis = (PRTDBGMODCV)RTMemAllocZ(sizeof(RTDBGMODCV));
2744	if (!pThis)
2745	return VERR_NO_MEMORY;
2746	int rc = RTDbgModCreate(&pThis->hCnt, pDbgMod->pszName, 0 /cbSeg/, 0 /fFlags/);
2747	if (RT_SUCCESS(rc))
2748	{
2749	pDbgMod->pvDbgPriv = pThis;
2750	pThis->enmType = enmFileType;
2751	pThis->hFile = hFile;
2752	pThis->pMod = pDbgMod;
2753	pThis->offBase = UINT32_MAX;
2754	pThis->offCoffDbgInfo = UINT32_MAX;
2755	*ppThis = pThis;
2756	return VINF_SUCCESS;
2757	}
2758	RTMemFree(pThis);
2759	return rc;
2760	}
2761
2762
2763	/**
2764	* Common part of the COFF probing.
2765	*
2766	* @returns status code.
2767	* @param pDbgMod The debug module instance. On success pvDbgPriv
2768	* will point to a valid RTDBGMODCV.
2769	* @param enmFileType The kind of file this is we're probing.
2770	* @param hFile The file with debug info in it.
2771	* @param off The offset where to expect CV debug info.
2772	* @param cb The number of bytes of debug info.
2773	* @param pszFilename The path to the file (for logging).
2774	*/
2775	static int rtDbgModCvProbeCoff(PRTDBGMODINT pDbgMod, RTCVFILETYPE enmFileType, RTFILE hFile,
2776	uint32_t off, uint32_t cb, const char *pszFilename)
2777	{
2778	RT_NOREF_PV(pszFilename);
2779
2780	/*
2781	* Check that there is sufficient data for a header, then read it.
2782	*/
2783	if (cb < sizeof(IMAGE_COFF_SYMBOLS_HEADER))
2784	{
2785	Log(("RTDbgModCv: Not enough room for COFF header.\n"));
2786	return VERR_BAD_EXE_FORMAT;
2787	}
2788	if (cb >= UINT32_C(128) * _1M)
2789	{
2790	Log(("RTDbgModCv: COFF debug information is to large (%'u bytes), max is 128MB\n", cb));
2791	return VERR_BAD_EXE_FORMAT;
2792	}
2793
2794	int rc;
2795	IMAGE_COFF_SYMBOLS_HEADER Hdr;
2796	if (hFile == NIL_RTFILE)
2797	rc = pDbgMod->pImgVt->pfnReadAt(pDbgMod, UINT32_MAX, off, &Hdr, sizeof(Hdr));
2798	else
2799	rc = RTFileReadAt(hFile, off, &Hdr, sizeof(Hdr), NULL);
2800	if (RT_FAILURE(rc))
2801	{
2802	Log(("RTDbgModCv: Error reading COFF header: %Rrc\n", rc));
2803	return rc;
2804	}
2805
2806	Log2(("RTDbgModCv: Found COFF debug info header at %#x (LB %#x) in %s\n", off, cb, pszFilename));
2807	Log2((" NumberOfSymbols = %#010x\n", Hdr.NumberOfSymbols));
2808	Log2((" LvaToFirstSymbol = %#010x\n", Hdr.LvaToFirstSymbol));
2809	Log2((" NumberOfLinenumbers = %#010x\n", Hdr.NumberOfLinenumbers));
2810	Log2((" LvaToFirstLinenumber = %#010x\n", Hdr.LvaToFirstLinenumber));
2811	Log2((" RvaToFirstByteOfCode = %#010x\n", Hdr.RvaToFirstByteOfCode));
2812	Log2((" RvaToLastByteOfCode = %#010x\n", Hdr.RvaToLastByteOfCode));
2813	Log2((" RvaToFirstByteOfData = %#010x\n", Hdr.RvaToFirstByteOfData));
2814	Log2((" RvaToLastByteOfData = %#010x\n", Hdr.RvaToLastByteOfData));
2815
2816	/*
2817	* Validate the COFF header.
2818	*/
2819	if ( (uint64_t)Hdr.LvaToFirstSymbol + (uint64_t)Hdr.NumberOfSymbols * sizeof(IMAGE_SYMBOL) > cb
2820	\|\| (Hdr.LvaToFirstSymbol < sizeof(Hdr) && Hdr.NumberOfSymbols > 0))
2821	{
2822	Log(("RTDbgModCv: Bad COFF symbol count or/and offset: LvaToFirstSymbol=%#x, NumberOfSymbols=%#x cbCoff=%#x\n",
2823	Hdr.LvaToFirstSymbol, Hdr.NumberOfSymbols, cb));
2824	return VERR_BAD_EXE_FORMAT;
2825	}
2826	if ( (uint64_t)Hdr.LvaToFirstLinenumber + (uint64_t)Hdr.NumberOfLinenumbers * sizeof(IMAGE_LINENUMBER) > cb
2827	\|\| (Hdr.LvaToFirstLinenumber < sizeof(Hdr) && Hdr.NumberOfLinenumbers > 0))
2828	{
2829	Log(("RTDbgModCv: Bad COFF symbol count or/and offset: LvaToFirstSymbol=%#x, NumberOfSymbols=%#x cbCoff=%#x\n",
2830	Hdr.LvaToFirstSymbol, Hdr.NumberOfSymbols, cb));
2831	return VERR_BAD_EXE_FORMAT;
2832	}
2833	if (Hdr.NumberOfSymbols < 2)
2834	{
2835	Log(("RTDbgModCv: The COFF symbol table is too short to be of any worth... (%u syms)\n", Hdr.NumberOfSymbols));
2836	return VERR_NO_DATA;
2837	}
2838
2839	/*
2840	* What we care about looks fine, use it.
2841	*/
2842	PRTDBGMODCV pThis;
2843	rc = rtDbgModCvCreateInstance(pDbgMod, enmFileType, hFile, &pThis);
2844	if (RT_SUCCESS(rc))
2845	{
2846	pThis->offCoffDbgInfo = off;
2847	pThis->cbCoffDbgInfo = cb;
2848	pThis->CoffHdr = Hdr;
2849	}
2850
2851	return rc;
2852	}
2853
2854
2855	/**
2856	* Common part of the CodeView probing.
2857	*
2858	* @returns status code.
2859	* @param pDbgMod The debug module instance. On success pvDbgPriv
2860	* will point to a valid RTDBGMODCV.
2861	* @param pCvHdr The CodeView base header.
2862	* @param enmFileType The kind of file this is we're probing.
2863	* @param hFile The file with debug info in it.
2864	* @param off The offset where to expect CV debug info.
2865	* @param cb The number of bytes of debug info.
2866	* @param enmArch The desired image architecture.
2867	* @param pszFilename The path to the file (for logging).
2868	*/
2869	static int rtDbgModCvProbeCommon(PRTDBGMODINT pDbgMod, PRTCVHDR pCvHdr, RTCVFILETYPE enmFileType, RTFILE hFile,
2870	uint32_t off, uint32_t cb, RTLDRARCH enmArch, const char *pszFilename)
2871	{
2872	int rc = VERR_DBG_NO_MATCHING_INTERPRETER;
2873	RT_NOREF_PV(enmArch); RT_NOREF_PV(pszFilename);
2874
2875	/* Is a codeview format we (wish to) support? */
2876	if ( pCvHdr->u32Magic == RTCVHDR_MAGIC_NB11
2877	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB09
2878	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB08
2879	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB05
2880	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB04
2881	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB02
2882	\|\| pCvHdr->u32Magic == RTCVHDR_MAGIC_NB00
2883	)
2884	{
2885	/* We're assuming it's a base header, so the offset must be within
2886	the area defined by the debug info we got from the loader. */
2887	if (pCvHdr->off < cb && pCvHdr->off >= sizeof(*pCvHdr))
2888	{
2889	Log(("RTDbgModCv: Found %c%c%c%c at %#x - size %#x, directory at %#x. file type %d\n",
2890	RT_BYTE1(pCvHdr->u32Magic), RT_BYTE2(pCvHdr->u32Magic), RT_BYTE3(pCvHdr->u32Magic), RT_BYTE4(pCvHdr->u32Magic),
2891	off, cb, pCvHdr->off, enmFileType));
2892
2893	/*
2894	* Create a module instance, if not already done.
2895	*/
2896	PRTDBGMODCV pThis;
2897	rc = rtDbgModCvCreateInstance(pDbgMod, enmFileType, hFile, &pThis);
2898	if (RT_SUCCESS(rc))
2899	{
2900	pThis->u32CvMagic = pCvHdr->u32Magic;
2901	pThis->offBase = off;
2902	pThis->cbDbgInfo = cb;
2903	pThis->offDir = pCvHdr->off;
2904	return VINF_SUCCESS;
2905	}
2906	}
2907	}
2908
2909	return rc;
2910	}
2911
2912
2913	/** @callback_method_impl{FNRTLDRENUMDBG} */
2914	static DECLCALLBACK(int) rtDbgModCvEnumCallback(RTLDRMOD hLdrMod, PCRTLDRDBGINFO pDbgInfo, void *pvUser)
2915	{
2916	PRTDBGMODINT pDbgMod = (PRTDBGMODINT)pvUser;
2917	Assert(!pDbgMod->pvDbgPriv);
2918	RT_NOREF_PV(hLdrMod);
2919
2920	/* Skip external files, RTDbgMod will deal with those
2921	via RTDBGMODINT::pszDbgFile. */
2922	if (pDbgInfo->pszExtFile)
2923	return VINF_SUCCESS;
2924
2925	/* We only handle the codeview sections. */
2926	if (pDbgInfo->enmType == RTLDRDBGINFOTYPE_CODEVIEW)
2927	{
2928	/* Read the specified header and check if we like it. */
2929	RTCVHDR CvHdr;
2930	int rc = pDbgMod->pImgVt->pfnReadAt(pDbgMod, pDbgInfo->iDbgInfo, pDbgInfo->offFile, &CvHdr, sizeof(CvHdr));
2931	if (RT_SUCCESS(rc))
2932	rc = rtDbgModCvProbeCommon(pDbgMod, &CvHdr, RTCVFILETYPE_IMAGE, NIL_RTFILE, pDbgInfo->offFile, pDbgInfo->cb,
2933	pDbgMod->pImgVt->pfnGetArch(pDbgMod), pDbgMod->pszImgFile);
2934	}
2935	else if (pDbgInfo->enmType == RTLDRDBGINFOTYPE_COFF)
2936	{
2937	/* Join paths with the DBG code. */
2938	rtDbgModCvProbeCoff(pDbgMod, RTCVFILETYPE_IMAGE, NIL_RTFILE, pDbgInfo->offFile, pDbgInfo->cb, pDbgMod->pszImgFile);
2939	}
2940
2941	return VINF_SUCCESS;
2942	}
2943
2944
2945	/**
2946	* Part two of the external file probing.
2947	*
2948	* @returns status code.
2949	* @param pThis The debug module instance. On success pvDbgPriv
2950	* will point to a valid RTDBGMODCV.
2951	* @param enmFileType The kind of file this is we're probing.
2952	* @param hFile The file with debug info in it.
2953	* @param off The offset where to expect CV debug info.
2954	* @param cb The number of bytes of debug info.
2955	* @param enmArch The desired image architecture.
2956	* @param pszFilename The path to the file (for logging).
2957	*/
2958	static int rtDbgModCvProbeFile2(PRTDBGMODINT pThis, RTCVFILETYPE enmFileType, RTFILE hFile, uint32_t off, uint32_t cb,
2959	RTLDRARCH enmArch, const char *pszFilename)
2960	{
2961	RTCVHDR CvHdr;
2962	int rc = RTFileReadAt(hFile, off, &CvHdr, sizeof(CvHdr), NULL);
2963	if (RT_SUCCESS(rc))
2964	rc = rtDbgModCvProbeCommon(pThis, &CvHdr, enmFileType, hFile, off, cb, enmArch, pszFilename);
2965	return rc;
2966	}
2967
2968
2969	/**
2970	* Probes an external file for CodeView information.
2971	*
2972	* @returns status code.
2973	* @param pDbgMod The debug module instance. On success pvDbgPriv
2974	* will point to a valid RTDBGMODCV.
2975	* @param pszFilename The path to the file to probe.
2976	* @param enmArch The desired image architecture.
2977	*/
2978	static int rtDbgModCvProbeFile(PRTDBGMODINT pDbgMod, const char *pszFilename, RTLDRARCH enmArch)
2979	{
2980	RTFILE hFile;
2981	int rc = RTFileOpen(&hFile, pszFilename, RTFILE_O_READ \| RTFILE_O_DENY_WRITE \| RTFILE_O_OPEN);
2982	if (RT_FAILURE(rc))
2983	return rc;
2984
2985	/*
2986	* Check for .DBG file
2987	*/
2988	IMAGE_SEPARATE_DEBUG_HEADER DbgHdr;
2989	rc = RTFileReadAt(hFile, 0, &DbgHdr, sizeof(DbgHdr), NULL);
2990	if ( RT_SUCCESS(rc)
2991	&& DbgHdr.Signature == IMAGE_SEPARATE_DEBUG_SIGNATURE)
2992	{
2993	Log2(("RTDbgModCv: Found separate debug header in %s:\n", pszFilename));
2994	Log2((" Flags = %#x\n", DbgHdr.Flags));
2995	Log2((" Machine = %#x\n", DbgHdr.Machine));
2996	Log2((" Characteristics = %#x\n", DbgHdr.Characteristics));
2997	Log2((" TimeDateStamp = %#x\n", DbgHdr.TimeDateStamp));
2998	Log2((" CheckSum = %#x\n", DbgHdr.CheckSum));
2999	Log2((" ImageBase = %#x\n", DbgHdr.ImageBase));
3000	Log2((" SizeOfImage = %#x\n", DbgHdr.SizeOfImage));
3001	Log2((" NumberOfSections = %#x\n", DbgHdr.NumberOfSections));
3002	Log2((" ExportedNamesSize = %#x\n", DbgHdr.ExportedNamesSize));
3003	Log2((" DebugDirectorySize = %#x\n", DbgHdr.DebugDirectorySize));
3004	Log2((" SectionAlignment = %#x\n", DbgHdr.SectionAlignment));
3005
3006	/*
3007	* Match up the architecture if specified.
3008	*/
3009	switch (enmArch)
3010	{
3011	case RTLDRARCH_X86_32:
3012	if (DbgHdr.Machine != IMAGE_FILE_MACHINE_I386)
3013	rc = VERR_LDR_ARCH_MISMATCH;
3014	break;
3015	case RTLDRARCH_AMD64:
3016	if (DbgHdr.Machine != IMAGE_FILE_MACHINE_AMD64)
3017	rc = VERR_LDR_ARCH_MISMATCH;
3018	break;
3019
3020	default:
3021	case RTLDRARCH_HOST:
3022	AssertFailed();
3023	case RTLDRARCH_WHATEVER:
3024	break;
3025	}
3026	if (RT_FAILURE(rc))
3027	{
3028	RTFileClose(hFile);
3029	return rc;
3030	}
3031
3032	/*
3033	* Probe for readable debug info in the debug directory.
3034	*/
3035	uint32_t offDbgDir = sizeof(DbgHdr)
3036	+ DbgHdr.NumberOfSections * sizeof(IMAGE_SECTION_HEADER)
3037	+ DbgHdr.ExportedNamesSize;
3038
3039	uint32_t cEntries = DbgHdr.DebugDirectorySize / sizeof(IMAGE_DEBUG_DIRECTORY);
3040	for (uint32_t i = 0; i < cEntries; i++, offDbgDir += sizeof(IMAGE_DEBUG_DIRECTORY))
3041	{
3042	IMAGE_DEBUG_DIRECTORY DbgDir;
3043	rc = RTFileReadAt(hFile, offDbgDir, &DbgDir, sizeof(DbgDir), NULL);
3044	if (RT_FAILURE(rc))
3045	break;
3046	if (DbgDir.Type == IMAGE_DEBUG_TYPE_CODEVIEW)
3047	rc = rtDbgModCvProbeFile2(pDbgMod, RTCVFILETYPE_DBG, hFile,
3048	DbgDir.PointerToRawData, DbgDir.SizeOfData,
3049	enmArch, pszFilename);
3050	else if (DbgDir.Type == IMAGE_DEBUG_TYPE_COFF)
3051	rc = rtDbgModCvProbeCoff(pDbgMod, RTCVFILETYPE_DBG, hFile,
3052	DbgDir.PointerToRawData, DbgDir.SizeOfData, pszFilename);
3053	}
3054
3055	/*
3056	* If we get down here with an instance, it prooves that we've found
3057	* something, regardless of any errors. Add the sections and such.
3058	*/
3059	PRTDBGMODCV pThis = (PRTDBGMODCV)pDbgMod->pvDbgPriv;
3060	if (pThis)
3061	{
3062	pThis->cbImage = DbgHdr.SizeOfImage;
3063	if (pDbgMod->pImgVt)
3064	rc = VINF_SUCCESS;
3065	else
3066	{
3067	rc = rtDbgModCvAddSegmentsFromDbg(pThis, &DbgHdr, pszFilename);
3068	if (RT_FAILURE(rc))
3069	rtDbgModCv_Close(pDbgMod);
3070	}
3071	return rc;
3072	}
3073
3074	/* Failed to find CV or smth, look at the end of the file just to be sure... */
3075	}
3076
3077	/*
3078	* Look for CV tail header.
3079	*/
3080	uint64_t cbFile;
3081	rc = RTFileSeek(hFile, -(RTFOFF)sizeof(RTCVHDR), RTFILE_SEEK_END, &cbFile);
3082	if (RT_SUCCESS(rc))
3083	{
3084	cbFile += sizeof(RTCVHDR);
3085	RTCVHDR CvHdr;
3086	rc = RTFileRead(hFile, &CvHdr, sizeof(CvHdr), NULL);
3087	if (RT_SUCCESS(rc))
3088	rc = rtDbgModCvProbeFile2(pDbgMod, RTCVFILETYPE_OTHER_AT_END, hFile,
3089	cbFile - CvHdr.off, CvHdr.off, enmArch, pszFilename);
3090	}
3091
3092	if (RT_FAILURE(rc))
3093	RTFileClose(hFile);
3094	return rc;
3095	}
3096
3097
3098
3099	/** @interface_method_impl{RTDBGMODVTDBG,pfnTryOpen} */
3100	static DECLCALLBACK(int) rtDbgModCv_TryOpen(PRTDBGMODINT pMod, RTLDRARCH enmArch)
3101	{
3102	/*
3103	* Look for debug info.
3104	*/
3105	int rc = VERR_DBG_NO_MATCHING_INTERPRETER;
3106	if (pMod->pszDbgFile)
3107	rc = rtDbgModCvProbeFile(pMod, pMod->pszDbgFile, enmArch);
3108
3109	if (!pMod->pvDbgPriv && pMod->pImgVt)
3110	{
3111	int rc2 = pMod->pImgVt->pfnEnumDbgInfo(pMod, rtDbgModCvEnumCallback, pMod);
3112	if (RT_FAILURE(rc2))
3113	rc = rc2;
3114
3115	if (!pMod->pvDbgPriv)
3116	{
3117	/* Try the executable in case it has a NBxx tail header. */
3118	rc2 = rtDbgModCvProbeFile(pMod, pMod->pszImgFile, enmArch);
3119	if (RT_FAILURE(rc2) && (RT_SUCCESS(rc) \|\| rc == VERR_DBG_NO_MATCHING_INTERPRETER))
3120	rc = rc2;
3121	}
3122	}
3123
3124	PRTDBGMODCV pThis = (PRTDBGMODCV)pMod->pvDbgPriv;
3125	if (!pThis)
3126	return RT_SUCCESS_NP(rc) ? VERR_DBG_NO_MATCHING_INTERPRETER : rc;
3127	Assert(pThis->offBase != UINT32_MAX \|\| pThis->offCoffDbgInfo != UINT32_MAX);
3128
3129	/*
3130	* Load the debug info.
3131	*/
3132	if (pMod->pImgVt)
3133	{
3134	rc = pMod->pImgVt->pfnEnumSegments(pMod, rtDbgModCvAddSegmentsCallback, pThis);
3135	pThis->fHaveLoadedSegments = true;
3136	}
3137	if (RT_SUCCESS(rc) && pThis->offBase != UINT32_MAX)
3138	rc = rtDbgModCvLoadCodeViewInfo(pThis);
3139	if (RT_SUCCESS(rc) && pThis->offCoffDbgInfo != UINT32_MAX)
3140	rc = rtDbgModCvLoadCoffInfo(pThis);
3141	if (RT_SUCCESS(rc))
3142	{
3143	Log(("RTDbgCv: Successfully loaded debug info\n"));
3144	return VINF_SUCCESS;
3145	}
3146
3147	Log(("RTDbgCv: Debug info load error %Rrc\n", rc));
3148	rtDbgModCv_Close(pMod);
3149	return rc;
3150	}
3151
3152
3153
3154
3155
3156	/** Virtual function table for the CodeView debug info reader. */
3157	DECL_HIDDEN_CONST(RTDBGMODVTDBG) const g_rtDbgModVtDbgCodeView =
3158	{
3159	/.u32Magic = / RTDBGMODVTDBG_MAGIC,
3160	/.fSupports = / RT_DBGTYPE_CODEVIEW,
3161	/.pszName = / "codeview",
3162	/.pfnTryOpen = / rtDbgModCv_TryOpen,
3163	/.pfnClose = / rtDbgModCv_Close,
3164
3165	/.pfnRvaToSegOff = / rtDbgModCv_RvaToSegOff,
3166	/.pfnImageSize = / rtDbgModCv_ImageSize,
3167
3168	/.pfnSegmentAdd = / rtDbgModCv_SegmentAdd,
3169	/.pfnSegmentCount = / rtDbgModCv_SegmentCount,
3170	/.pfnSegmentByIndex = / rtDbgModCv_SegmentByIndex,
3171
3172	/.pfnSymbolAdd = / rtDbgModCv_SymbolAdd,
3173	/.pfnSymbolCount = / rtDbgModCv_SymbolCount,
3174	/.pfnSymbolByOrdinal = / rtDbgModCv_SymbolByOrdinal,
3175	/.pfnSymbolByName = / rtDbgModCv_SymbolByName,
3176	/.pfnSymbolByAddr = / rtDbgModCv_SymbolByAddr,
3177
3178	/.pfnLineAdd = / rtDbgModCv_LineAdd,
3179	/.pfnLineCount = / rtDbgModCv_LineCount,
3180	/.pfnLineByOrdinal = / rtDbgModCv_LineByOrdinal,
3181	/.pfnLineByAddr = / rtDbgModCv_LineByAddr,
3182
3183	/.pfnUnwindFrame = / rtDbgModCv_UnwindFrame,
3184
3185	/.u32EndMagic = / RTDBGMODVTDBG_MAGIC
3186	};
3187

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source: vbox/trunk/src/VBox/Runtime/common/dbg/dbgmodcodeview.cpp@ 93115

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