dbgmodcontainer.cpp@ 30859

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1	/* $Id: dbgmodcontainer.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
2	/** @file
3	* IPRT - Debug Info Container.
4	*/
5
6	/*
7	* Copyright (C) 2009 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*******************************************************************************
29	* Header Files *
30	*******************************************************************************/
31	#include <iprt/dbg.h>
32	#include "internal/iprt.h"
33
34	#include <iprt/avl.h>
35	#include <iprt/err.h>
36	#include <iprt/mem.h>
37	#include <iprt/string.h>
38	#include <iprt/strcache.h>
39	#include "internal/dbgmod.h"
40
41
42	/*******************************************************************************
43	* Structures and Typedefs *
44	*******************************************************************************/
45	/**
46	* Symbol entry.
47	*/
48	typedef struct RTDBGMODCTNSYMBOL
49	{
50	/** The address core. */
51	AVLRUINTPTRNODECORE AddrCore;
52	/** The name space core. */
53	RTSTRSPACECORE NameCore;
54	/** The ordinal number core. */
55	AVLU32NODECORE OrdinalCore;
56	/** The segment index. */
57	RTDBGSEGIDX iSeg;
58	/** The symbol flags. */
59	uint32_t fFlags;
60	/** The symbol size.
61	* This may be zero while the range in AddrCore indicates 0. */
62	RTUINTPTR cb;
63	} RTDBGMODCTNSYMBOL;
64	/** Pointer to a symbol entry in the debug info container. */
65	typedef RTDBGMODCTNSYMBOL *PRTDBGMODCTNSYMBOL;
66	/** Pointer to a const symbol entry in the debug info container. */
67	typedef RTDBGMODCTNSYMBOL const *PCRTDBGMODCTNSYMBOL;
68
69	/**
70	* Line number entry.
71	*/
72	typedef struct RTDBGMODCTNLINE
73	{
74	/** The address core.
75	* The Key is the address of the line number. */
76	AVLUINTPTRNODECORE AddrCore;
77	/** The ordinal number core. */
78	AVLU32NODECORE OrdinalCore;
79	/** Pointer to the file name (in string cache). */
80	const char *pszFile;
81	/** The line number. */
82	uint32_t uLineNo;
83	/** The segment index. */
84	RTDBGSEGIDX iSeg;
85	} RTDBGMODCTNLINE;
86	/** Pointer to a line number entry. */
87	typedef RTDBGMODCTNLINE *PRTDBGMODCTNLINE;
88	/** Pointer to const a line number entry. */
89	typedef RTDBGMODCTNLINE const *PCRTDBGMODCTNLINE;
90
91	/**
92	* Segment entry.
93	*/
94	typedef struct RTDBGMODCTNSEGMENT
95	{
96	/** The symbol address space tree. */
97	AVLRUINTPTRTREE SymAddrTree;
98	/** The line number address space tree. */
99	AVLUINTPTRTREE LineAddrTree;
100	/** The segment offset. */
101	RTUINTPTR off;
102	/** The segment size. */
103	RTUINTPTR cb;
104	/** The segment flags. */
105	uint32_t fFlags;
106	/** The segment name. */
107	const char *pszName;
108	} RTDBGMODCTNSEGMENT;
109	/** Pointer to a segment entry in the debug info container. */
110	typedef RTDBGMODCTNSEGMENT *PRTDBGMODCTNSEGMENT;
111	/** Pointer to a const segment entry in the debug info container. */
112	typedef RTDBGMODCTNSEGMENT const *PCRTDBGMODCTNSEGMENT;
113
114	/**
115	* Instance data.
116	*/
117	typedef struct RTDBGMODCTN
118	{
119	/** The name space. */
120	RTSTRSPACE Names;
121	/** Tree containing any absolute addresses. */
122	AVLRUINTPTRTREE AbsAddrTree;
123	/** Tree organizing the symbols by ordinal number. */
124	AVLU32TREE SymbolOrdinalTree;
125	/** Tree organizing the line numbers by ordinal number. */
126	AVLU32TREE LineOrdinalTree;
127	/** Segment table. */
128	PRTDBGMODCTNSEGMENT paSegs;
129	/** The number of segments in the segment table. */
130	RTDBGSEGIDX cSegs;
131	/** The image size. 0 means unlimited. */
132	RTUINTPTR cb;
133	/** The next symbol ordinal. */
134	uint32_t iNextSymbolOrdinal;
135	/** The next line number ordinal. */
136	uint32_t iNextLineOrdinal;
137	} RTDBGMODCTN;
138	/** Pointer to instance data for the debug info container. */
139	typedef RTDBGMODCTN *PRTDBGMODCTN;
140
141
142	/**
143	* Fills in a RTDBGSYMBOL structure.
144	*
145	* @returns VINF_SUCCESS.
146	* @param pMySym Our internal symbol representation.
147	* @param pExtSym The external symbol representation.
148	*/
149	DECLINLINE(int) rtDbgModContainerReturnSymbol(PCRTDBGMODCTNSYMBOL pMySym, PRTDBGSYMBOL pExtSym)
150	{
151	pExtSym->Value = pMySym->AddrCore.Key;
152	pExtSym->offSeg = pMySym->AddrCore.Key;
153	pExtSym->iSeg = pMySym->iSeg;
154	pExtSym->fFlags = pMySym->fFlags;
155	pExtSym->cb = pMySym->cb;
156	pExtSym->iOrdinal = pMySym->OrdinalCore.Key;
157	Assert(pMySym->NameCore.cchString < sizeof(pExtSym->szName));
158	memcpy(pExtSym->szName, pMySym->NameCore.pszString, pMySym->NameCore.cchString + 1);
159	return VINF_SUCCESS;
160	}
161
162
163
164	/** @copydoc RTDBGMODVTDBG::pfnLineByAddr */
165	static DECLCALLBACK(int) rtDbgModContainer_LineByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off,
166	PRTINTPTR poffDisp, PRTDBGLINE pLineInfo)
167	{
168	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
169
170	/*
171	* Validate the input address.
172	*/
173	AssertMsgReturn(iSeg < pThis->cSegs,
174	("iSeg=%#x cSegs=%#x\n", pThis->cSegs),
175	VERR_DBG_INVALID_SEGMENT_INDEX);
176	AssertMsgReturn(off < pThis->paSegs[iSeg].cb,
177	("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb),
178	VERR_DBG_INVALID_SEGMENT_OFFSET);
179
180	/*
181	* Lookup the nearest line number with an address less or equal to the specified address.
182	*/
183	PAVLUINTPTRNODECORE pAvlCore = RTAvlUIntPtrGetBestFit(&pThis->paSegs[iSeg].LineAddrTree, off, false /fAbove/);
184	if (!pAvlCore)
185	return pThis->iNextLineOrdinal
186	? VERR_DBG_LINE_NOT_FOUND
187	: VERR_DBG_NO_LINE_NUMBERS;
188	PCRTDBGMODCTNLINE pMyLine = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNLINE const, AddrCore);
189	pLineInfo->Address = pMyLine->AddrCore.Key;
190	pLineInfo->offSeg = pMyLine->AddrCore.Key;
191	pLineInfo->iSeg = iSeg;
192	pLineInfo->uLineNo = pMyLine->uLineNo;
193	pLineInfo->iOrdinal = pMyLine->OrdinalCore.Key;
194	strcpy(pLineInfo->szFilename, pMyLine->pszFile);
195	if (poffDisp)
196	*poffDisp = off - pMyLine->AddrCore.Key;
197	return VINF_SUCCESS;
198	}
199
200
201	/** @copydoc RTDBGMODVTDBG::pfnLineByOrdinal */
202	static DECLCALLBACK(int) rtDbgModContainer_LineByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo)
203	{
204	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
205
206	/*
207	* Look it up.
208	*/
209	if (iOrdinal >= pThis->iNextLineOrdinal)
210	return pThis->iNextLineOrdinal
211	? VERR_DBG_LINE_NOT_FOUND
212	: VERR_DBG_NO_LINE_NUMBERS;
213	PAVLU32NODECORE pAvlCore = RTAvlU32Get(&pThis->LineOrdinalTree, iOrdinal);
214	AssertReturn(pAvlCore, VERR_DBG_LINE_NOT_FOUND);
215	PCRTDBGMODCTNLINE pMyLine = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNLINE const, OrdinalCore);
216	pLineInfo->Address = pMyLine->AddrCore.Key;
217	pLineInfo->offSeg = pMyLine->AddrCore.Key;
218	pLineInfo->iSeg = pMyLine->iSeg;
219	pLineInfo->uLineNo = pMyLine->uLineNo;
220	pLineInfo->iOrdinal = pMyLine->OrdinalCore.Key;
221	strcpy(pLineInfo->szFilename, pMyLine->pszFile);
222	return VINF_SUCCESS;
223	}
224
225
226	/** @copydoc RTDBGMODVTDBG::pfnLineCount */
227	static DECLCALLBACK(uint32_t) rtDbgModContainer_LineCount(PRTDBGMODINT pMod)
228	{
229	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
230
231	/* Note! The ordinal numbers are 0-based. */
232	return pThis->iNextLineOrdinal;
233	}
234
235
236	/** @copydoc RTDBGMODVTDBG::pfnLineAdd */
237	static DECLCALLBACK(int) rtDbgModContainer_LineAdd(PRTDBGMODINT pMod, const char *pszFile, size_t cchFile, uint32_t uLineNo,
238	uint32_t iSeg, RTUINTPTR off, uint32_t *piOrdinal)
239	{
240	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
241
242	/*
243	* Validate the input address.
244	*/
245	AssertMsgReturn(iSeg < pThis->cSegs, ("iSeg=%#x cSegs=%#x\n", pThis->cSegs),
246	VERR_DBG_INVALID_SEGMENT_INDEX);
247	AssertMsgReturn(off < pThis->paSegs[iSeg].cb, ("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb),
248	VERR_DBG_INVALID_SEGMENT_OFFSET);
249
250	/*
251	* Create a new entry.
252	*/
253	PRTDBGMODCTNLINE pLine = (PRTDBGMODCTNLINE)RTMemAllocZ(sizeof(*pLine));
254	if (!pLine)
255	return VERR_NO_MEMORY;
256	pLine->AddrCore.Key = off;
257	pLine->OrdinalCore.Key = pThis->iNextLineOrdinal;
258	pLine->uLineNo = uLineNo;
259	pLine->iSeg = iSeg;
260	pLine->pszFile = RTStrCacheEnterN(g_hDbgModStrCache, pszFile, cchFile);
261	int rc;
262	if (pLine->pszFile)
263	{
264	if (RTAvlUIntPtrInsert(&pThis->paSegs[iSeg].LineAddrTree, &pLine->AddrCore))
265	{
266	if (RTAvlU32Insert(&pThis->LineOrdinalTree, &pLine->OrdinalCore))
267	{
268	if (piOrdinal)
269	*piOrdinal = pThis->iNextLineOrdinal;
270	pThis->iNextLineOrdinal++;
271	return VINF_SUCCESS;
272	}
273
274	rc = VERR_INTERNAL_ERROR_5;
275	RTAvlUIntPtrRemove(&pThis->paSegs[iSeg].LineAddrTree, pLine->AddrCore.Key);
276	}
277
278	/* bail out */
279	rc = VERR_DBG_ADDRESS_CONFLICT;
280	RTStrCacheRelease(g_hDbgModStrCache, pLine->pszFile);
281	}
282	else
283	rc = VERR_NO_MEMORY;
284	RTMemFree(pLine);
285	return rc;
286	}
287
288
289	/** @copydoc RTDBGMODVTDBG::pfnSymbolByAddr */
290	static DECLCALLBACK(int) rtDbgModContainer_SymbolByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off,
291	PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo)
292	{
293	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
294
295	/*
296	* Validate the input address.
297	*/
298	AssertMsgReturn( iSeg == RTDBGSEGIDX_ABS
299	\|\| iSeg < pThis->cSegs,
300	("iSeg=%#x cSegs=%#x\n", pThis->cSegs),
301	VERR_DBG_INVALID_SEGMENT_INDEX);
302	AssertMsgReturn( iSeg >= RTDBGSEGIDX_SPECIAL_FIRST
303	\|\| off <= pThis->paSegs[iSeg].cb,
304	("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb),
305	VERR_DBG_INVALID_SEGMENT_OFFSET);
306
307	/*
308	* Lookup the nearest symbol with an address less or equal to the specified address.
309	*/
310	PAVLRUINTPTRNODECORE pAvlCore = RTAvlrUIntPtrGetBestFit( iSeg == RTDBGSEGIDX_ABS
311	? &pThis->AbsAddrTree
312	: &pThis->paSegs[iSeg].SymAddrTree,
313	off,
314	false /fAbove/);
315	if (!pAvlCore)
316	return VERR_SYMBOL_NOT_FOUND;
317	PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNSYMBOL const, AddrCore);
318	if (poffDisp)
319	*poffDisp = off - pMySym->AddrCore.Key;
320	return rtDbgModContainerReturnSymbol(pMySym, pSymInfo);
321	}
322
323
324	/** @copydoc RTDBGMODVTDBG::pfnSymbolByName */
325	static DECLCALLBACK(int) rtDbgModContainer_SymbolByName(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol, PRTDBGSYMBOL pSymInfo)
326	{
327	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
328	NOREF(cchSymbol);
329
330	/*
331	* Look it up in the name space.
332	*/
333	PRTSTRSPACECORE pStrCore = RTStrSpaceGet(&pThis->Names, pszSymbol);
334	if (!pStrCore)
335	return VERR_SYMBOL_NOT_FOUND;
336	PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pStrCore, RTDBGMODCTNSYMBOL const, NameCore);
337	return rtDbgModContainerReturnSymbol(pMySym, pSymInfo);
338	}
339
340
341	/** @copydoc RTDBGMODVTDBG::pfnSymbolByOrdinal */
342	static DECLCALLBACK(int) rtDbgModContainer_SymbolByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo)
343	{
344	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
345
346	/*
347	* Look it up in the ordinal tree.
348	*/
349	if (iOrdinal >= pThis->iNextSymbolOrdinal)
350	return pThis->iNextSymbolOrdinal
351	? VERR_DBG_NO_SYMBOLS
352	: VERR_SYMBOL_NOT_FOUND;
353	PAVLU32NODECORE pAvlCore = RTAvlU32Get(&pThis->SymbolOrdinalTree, iOrdinal);
354	AssertReturn(pAvlCore, VERR_SYMBOL_NOT_FOUND);
355	PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNSYMBOL const, OrdinalCore);
356	return rtDbgModContainerReturnSymbol(pMySym, pSymInfo);
357	}
358
359
360	/** @copydoc RTDBGMODVTDBG::pfnSymbolCount */
361	static DECLCALLBACK(uint32_t) rtDbgModContainer_SymbolCount(PRTDBGMODINT pMod)
362	{
363	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
364
365	/* Note! The ordinal numbers are 0-based. */
366	return pThis->iNextSymbolOrdinal;
367	}
368
369
370	/** @copydoc RTDBGMODVTDBG::pfnSymbolAdd */
371	static DECLCALLBACK(int) rtDbgModContainer_SymbolAdd(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol,
372	RTDBGSEGIDX iSeg, RTUINTPTR off, RTUINTPTR cb, uint32_t fFlags,
373	uint32_t *piOrdinal)
374	{
375	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
376
377	/*
378	* Address validation. The other arguments have already been validated.
379	*/
380	AssertMsgReturn( iSeg == RTDBGSEGIDX_ABS
381	\|\| iSeg < pThis->cSegs,
382	("iSeg=%#x cSegs=%#x\n", pThis->cSegs),
383	VERR_DBG_INVALID_SEGMENT_INDEX);
384	AssertMsgReturn( iSeg >= RTDBGSEGIDX_SPECIAL_FIRST
385	\|\| off + cb <= pThis->paSegs[iSeg].cb,
386	("off=%RTptr cb=%RTptr cbSeg=%RTptr\n", off, cb, pThis->paSegs[iSeg].cb),
387	VERR_DBG_INVALID_SEGMENT_OFFSET);
388
389	/*
390	* Create a new entry.
391	*/
392	PRTDBGMODCTNSYMBOL pSymbol = (PRTDBGMODCTNSYMBOL)RTMemAllocZ(sizeof(*pSymbol));
393	if (!pSymbol)
394	return VERR_NO_MEMORY;
395
396	pSymbol->AddrCore.Key = off;
397	pSymbol->AddrCore.KeyLast = off + (cb ? cb - 1 : 0);
398	pSymbol->OrdinalCore.Key = pThis->iNextSymbolOrdinal;
399	pSymbol->iSeg = iSeg;
400	pSymbol->cb = cb;
401	pSymbol->fFlags = fFlags;
402	pSymbol->NameCore.pszString = RTStrCacheEnter(g_hDbgModStrCache, pszSymbol);
403	int rc;
404	if (pSymbol->NameCore.pszString)
405	{
406	if (RTStrSpaceInsert(&pThis->Names, &pSymbol->NameCore))
407	{
408	PAVLRUINTPTRTREE pAddrTree = iSeg == RTDBGSEGIDX_ABS
409	? &pThis->AbsAddrTree
410	: &pThis->paSegs[iSeg].SymAddrTree;
411	if (RTAvlrUIntPtrInsert(pAddrTree, &pSymbol->AddrCore))
412	{
413	if (RTAvlU32Insert(&pThis->SymbolOrdinalTree, &pSymbol->OrdinalCore))
414	{
415	if (piOrdinal)
416	*piOrdinal = pThis->iNextSymbolOrdinal;
417	pThis->iNextSymbolOrdinal++;
418	return VINF_SUCCESS;
419	}
420
421	/* bail out */
422	rc = VERR_INTERNAL_ERROR_5;
423	RTAvlrUIntPtrRemove(pAddrTree, pSymbol->AddrCore.Key);
424	}
425	else
426	rc = VERR_DBG_ADDRESS_CONFLICT;
427	RTStrSpaceRemove(&pThis->Names, pSymbol->NameCore.pszString);
428	}
429	else
430	rc = VERR_DBG_DUPLICATE_SYMBOL;
431	RTStrCacheRelease(g_hDbgModStrCache, pSymbol->NameCore.pszString);
432	}
433	else
434	rc = VERR_NO_MEMORY;
435	RTMemFree(pSymbol);
436	return rc;
437	}
438
439
440	/** @copydoc RTDBGMODVTDBG::pfnSegmentByIndex */
441	static DECLCALLBACK(int) rtDbgModContainer_SegmentByIndex(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo)
442	{
443	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
444	if (iSeg >= pThis->cSegs)
445	return VERR_DBG_INVALID_SEGMENT_INDEX;
446	pSegInfo->Address = RTUINTPTR_MAX;
447	pSegInfo->uRva = pThis->paSegs[iSeg].off;
448	pSegInfo->cb = pThis->paSegs[iSeg].cb;
449	pSegInfo->fFlags = pThis->paSegs[iSeg].fFlags;
450	pSegInfo->iSeg = iSeg;
451	strcpy(pSegInfo->szName, pThis->paSegs[iSeg].pszName);
452	return VINF_SUCCESS;
453	}
454
455
456	/** @copydoc RTDBGMODVTDBG::pfnSegmentCount */
457	static DECLCALLBACK(RTDBGSEGIDX) rtDbgModContainer_SegmentCount(PRTDBGMODINT pMod)
458	{
459	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
460	return pThis->cSegs;
461	}
462
463
464	/** @copydoc RTDBGMODVTDBG::pfnSegmentAdd */
465	static DECLCALLBACK(int) rtDbgModContainer_SegmentAdd(PRTDBGMODINT pMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName, size_t cchName,
466	uint32_t fFlags, PRTDBGSEGIDX piSeg)
467	{
468	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
469
470	/*
471	* Input validation (the bits the caller cannot do).
472	*/
473	/* Overlapping segments are not yet supported. Will use flags to deal with it if it becomes necessary. */
474	RTUINTPTR uRvaLast = uRva + RT_MAX(cb, 1) - 1;
475	RTUINTPTR uRvaLastMax = uRvaLast;
476	RTDBGSEGIDX iSeg = pThis->cSegs;
477	while (iSeg-- > 0)
478	{
479	RTUINTPTR uCurRva = pThis->paSegs[iSeg].off;
480	RTUINTPTR uCurRvaLast = uCurRva + RT_MAX(pThis->paSegs[iSeg].cb, 1) - 1;
481	if ( uRva <= uCurRvaLast
482	&& uRvaLast >= uCurRva)
483	AssertMsgFailedReturn(("uRva=%RTptr uRvaLast=%RTptr (cb=%RTptr) \"%s\";\n"
484	"uRva=%RTptr uRvaLast=%RTptr (cb=%RTptr) \"%s\" iSeg=%#x\n",
485	uRva, uRvaLast, cb, pszName,
486	uCurRva, uCurRvaLast, pThis->paSegs[iSeg].cb, pThis->paSegs[iSeg].pszName, iSeg),
487	VERR_DBG_SEGMENT_INDEX_CONFLICT);
488	if (uRvaLastMax < uCurRvaLast)
489	uRvaLastMax = uCurRvaLast;
490	}
491	/* Strict ordered segment addition at the moment. */
492	iSeg = pThis->cSegs;
493	AssertMsgReturn(!piSeg \|\| piSeg == NIL_RTDBGSEGIDX \|\| piSeg == iSeg,
494	("iSeg=%#x piSeg=%#x\n", iSeg, piSeg),
495	VERR_DBG_INVALID_SEGMENT_INDEX);
496
497	/*
498	* Add an entry to the segment table, extending it if necessary.
499	*/
500	if (!(iSeg % 8))
501	{
502	void pvSegs = RTMemRealloc(pThis->paSegs, sizeof(RTDBGMODCTNSEGMENT) (iSeg + 8));
503	if (!pvSegs)
504	return VERR_NO_MEMORY;
505	pThis->paSegs = (PRTDBGMODCTNSEGMENT)pvSegs;
506	}
507
508	pThis->paSegs[iSeg].SymAddrTree = NULL;
509	pThis->paSegs[iSeg].LineAddrTree = NULL;
510	pThis->paSegs[iSeg].off = uRva;
511	pThis->paSegs[iSeg].cb = cb;
512	pThis->paSegs[iSeg].fFlags = fFlags;
513	pThis->paSegs[iSeg].pszName = RTStrCacheEnterN(g_hDbgModStrCache, pszName, cchName);
514	if (pThis->paSegs[iSeg].pszName)
515	{
516	if (piSeg)
517	*piSeg = iSeg;
518	pThis->cSegs++;
519	pThis->cb = uRvaLastMax + 1;
520	if (!pThis->cb)
521	pThis->cb = RTUINTPTR_MAX;
522	return VINF_SUCCESS;
523	}
524	return VERR_NO_MEMORY;
525	}
526
527
528	/** @copydoc RTDBGMODVTDBG::pfnImageSize */
529	static DECLCALLBACK(RTUINTPTR) rtDbgModContainer_ImageSize(PRTDBGMODINT pMod)
530	{
531	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
532	return pThis->cb;
533	}
534
535
536	/** @copydoc RTDBGMODVTDBG::pfnRvaToSegOff */
537	static DECLCALLBACK(RTDBGSEGIDX) rtDbgModContainer_RvaToSegOff(PRTDBGMODINT pMod, RTUINTPTR uRva, PRTUINTPTR poffSeg)
538	{
539	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
540	PCRTDBGMODCTNSEGMENT paSeg = pThis->paSegs;
541	uint32_t const cSegs = pThis->cSegs;
542	if (cSegs <= 7)
543	{
544	/*
545	* Linear search.
546	*/
547	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
548	{
549	RTUINTPTR offSeg = uRva - paSeg[iSeg].off;
550	if (offSeg < paSeg[iSeg].cb)
551	{
552	if (poffSeg)
553	*poffSeg = offSeg;
554	return iSeg;
555	}
556	}
557	}
558	else
559	{
560	/*
561	* Binary search.
562	*/
563	uint32_t iFirst = 0;
564	uint32_t iLast = cSegs - 1;
565	for (;;)
566	{
567	uint32_t iSeg = iFirst + (iFirst - iLast) / 2;
568	RTUINTPTR offSeg = uRva - paSeg[iSeg].off;
569	if (offSeg < paSeg[iSeg].cb)
570	{
571	if (poffSeg)
572	*poffSeg = offSeg;
573	return iSeg;
574	}
575
576	/* advance */
577	if (uRva < paSeg[iSeg].off)
578	{
579	/* between iFirst and iSeg. */
580	if (iSeg == iFirst)
581	break;
582	iLast = iSeg - 1;
583	}
584	else
585	{
586	/* between iSeg and iLast. */
587	if (iSeg == iLast)
588	break;
589	iFirst = iSeg + 1;
590	}
591	}
592	}
593
594	/* Invalid. */
595	return NIL_RTDBGSEGIDX;
596	}
597
598
599	/** Destroy a symbol node. */
600	static DECLCALLBACK(int) rtDbgModContainer_DestroyTreeNode(PAVLRUINTPTRNODECORE pNode, void *pvUser)
601	{
602	PRTDBGMODCTNSYMBOL pSym = RT_FROM_MEMBER(pNode, RTDBGMODCTNSYMBOL, AddrCore);
603	RTStrCacheRelease(g_hDbgModStrCache, pSym->NameCore.pszString);
604	pSym->NameCore.pszString = NULL;
605	RTMemFree(pSym);
606	return 0;
607	}
608
609
610	/** @copydoc RTDBGMODVTDBG::pfnClose */
611	static DECLCALLBACK(int) rtDbgModContainer_Close(PRTDBGMODINT pMod)
612	{
613	PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv;
614
615	/*
616	* Destroy the symbols and instance data.
617	*/
618	for (uint32_t iSeg = 0; iSeg < pThis->cSegs; iSeg++)
619	{
620	RTAvlrUIntPtrDestroy(&pThis->paSegs[iSeg].SymAddrTree, rtDbgModContainer_DestroyTreeNode, NULL);
621	RTStrCacheRelease(g_hDbgModStrCache, pThis->paSegs[iSeg].pszName);
622	pThis->paSegs[iSeg].pszName = NULL;
623	}
624
625	RTAvlrUIntPtrDestroy(&pThis->AbsAddrTree, rtDbgModContainer_DestroyTreeNode, NULL);
626	pThis->Names = NULL;
627
628	RTMemFree(pThis->paSegs);
629	pThis->paSegs = NULL;
630
631	RTMemFree(pThis);
632
633	return VINF_SUCCESS;
634	}
635
636
637	/** @copydoc RTDBGMODVTDBG::pfnTryOpen */
638	static DECLCALLBACK(int) rtDbgModContainer_TryOpen(PRTDBGMODINT pMod)
639	{
640	return VERR_INTERNAL_ERROR_5;
641	}
642
643
644
645	/** Virtual function table for the debug info container. */
646	static RTDBGMODVTDBG const g_rtDbgModVtDbgContainer =
647	{
648	/.u32Magic = / RTDBGMODVTDBG_MAGIC,
649	/.fSupports = / 0, /* (Don't call my TryOpen, please.) */
650	/.pszName = / "container",
651	/.pfnTryOpen = / rtDbgModContainer_TryOpen,
652	/.pfnClose = / rtDbgModContainer_Close,
653
654	/.pfnRvaToSegOff = / rtDbgModContainer_RvaToSegOff,
655	/.pfnImageSize = / rtDbgModContainer_ImageSize,
656
657	/.pfnSegmentAdd = / rtDbgModContainer_SegmentAdd,
658	/.pfnSegmentCount = / rtDbgModContainer_SegmentCount,
659	/.pfnSegmentByIndex = / rtDbgModContainer_SegmentByIndex,
660
661	/.pfnSymbolAdd = / rtDbgModContainer_SymbolAdd,
662	/.pfnSymbolCount = / rtDbgModContainer_SymbolCount,
663	/.pfnSymbolByOrdinal = / rtDbgModContainer_SymbolByOrdinal,
664	/.pfnSymbolByName = / rtDbgModContainer_SymbolByName,
665	/.pfnSymbolByAddr = / rtDbgModContainer_SymbolByAddr,
666
667	/.pfnLineAdd = / rtDbgModContainer_LineAdd,
668	/.pfnLineCount = / rtDbgModContainer_LineCount,
669	/.pfnLineByOrdinal = / rtDbgModContainer_LineByOrdinal,
670	/.pfnLineByAddr = / rtDbgModContainer_LineByAddr,
671
672	/.u32EndMagic = / RTDBGMODVTDBG_MAGIC
673	};
674
675
676
677	/**
678	* Creates a generic debug info container and associates it with the module.
679	*
680	* @returns IPRT status code.
681	* @param pMod The module instance.
682	* @param cbSeg The size of the initial segment. 0 if segments are to be
683	* created manually later on.
684	*/
685	int rtDbgModContainerCreate(PRTDBGMODINT pMod, RTUINTPTR cbSeg)
686	{
687	PRTDBGMODCTN pThis = (PRTDBGMODCTN)RTMemAlloc(sizeof(*pThis));
688	if (!pThis)
689	return VERR_NO_MEMORY;
690
691	pThis->Names = NULL;
692	pThis->AbsAddrTree = NULL;
693	pThis->SymbolOrdinalTree = NULL;
694	pThis->LineOrdinalTree = NULL;
695	pThis->paSegs = NULL;
696	pThis->cSegs = 0;
697	pThis->cb = 0;
698	pThis->iNextSymbolOrdinal = 0;
699	pThis->iNextLineOrdinal = 0;
700
701	pMod->pDbgVt = &g_rtDbgModVtDbgContainer;
702	pMod->pvDbgPriv = pThis;
703
704	/*
705	* Add the initial segment.
706	*/
707	if (cbSeg)
708	{
709	int rc = rtDbgModContainer_SegmentAdd(pMod, 0, cbSeg, "default", sizeof("default") - 1, 0, NULL);
710	if (RT_FAILURE(rc))
711	{
712	RTMemFree(pThis);
713	pMod->pDbgVt = NULL;
714	pMod->pvDbgPriv = NULL;
715	return rc;
716	}
717	}
718
719	return VINF_SUCCESS;
720	}
721

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source: vbox/trunk/src/VBox/Runtime/common/dbg/dbgmodcontainer.cpp@ 30859

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