DBGFSym.cpp@ 16317

Last change on this file since 16317 was 16080, checked in by vboxsync, 16 years ago
DBGF: 64-bit linux symbol files.
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1	/* $Id: DBGFSym.cpp 16080 2009-01-20 11:15:58Z vboxsync $ */
2	/** @file
3	* DBGF - Debugger Facility, Symbol Management.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_DBGF
27	#if defined(RT_OS_WINDOWS) && 0 //defined(DEBUG_bird) // enabled this is you want to debug win32 guests or the hypervisor.
28	# include <Windows.h>
29	# define _IMAGEHLP64
30	# include <DbgHelp.h>
31	# define HAVE_DBGHELP /* if doing guest stuff, this can be nice. */
32	#endif
33	/** @todo Only use DBGHELP for reading modules since it doesn't do all we want (relocations), or is way to slow in some cases (add symbol)! */
34	#include <VBox/dbgf.h>
35	#include "DBGFInternal.h"
36	#include <VBox/vm.h>
37	#include <VBox/mm.h>
38	#include <VBox/pdm.h>
39	#include <VBox/err.h>
40	#include <VBox/log.h>
41	#include <iprt/assert.h>
42
43	#ifndef HAVE_DBGHELP
44	# include <iprt/avl.h>
45	# include <iprt/string.h>
46	# include <iprt/ctype.h>
47	#endif
48
49	#include <stdio.h> /* for fopen(). / /* @todo use iprt/stream.h! */
50	#include <stdlib.h>
51
52
53	/*******************************************************************************
54	* Internal Functions *
55	*******************************************************************************/
56	#ifdef HAVE_DBGHELP
57	static DECLCALLBACK(int) dbgfR3EnumModules(PVM pVM, const char pszFilename, const char pszName, RTUINTPTR ImageBase, size_t cbImage, bool fGC);
58	static int win32Error(PVM pVM);
59	#endif
60
61
62	/*******************************************************************************
63	* Structures and Typedefs *
64	*******************************************************************************/
65	#ifndef HAVE_DBGHELP
66	/* later */
67	typedef struct DBGFMOD *PDBGFMOD;
68
69	/**
70	* Internal represenation of a symbol.
71	*/
72	typedef struct DBGFSYM
73	{
74	/** Node core with the symbol address range. */
75	AVLRGCPTRNODECORE Core;
76	/** Pointer to the module this symbol is associated with. */
77	PDBGFMOD pModule;
78	/** Pointer to the next symbol in with this name. */
79	struct DBGFSYM *pNext;
80	/** Symbol name. */
81	char szName[1];
82	} DBGFSYM, *PDBGFSYM;
83
84	/**
85	* Symbol name space node.
86	*/
87	typedef struct DBGFSYMSPACE
88	{
89	/** Node core with the symbol name.
90	* (it's allocated in the same block as this struct) */
91	RTSTRSPACECORE Core;
92	/** Pointer to the first symbol with this name (LIFO). */
93	PDBGFSYM pSym;
94	} DBGFSYMSPACE, *PDBGFSYMSPACE;
95
96	#endif
97
98
99
100	/*******************************************************************************
101	* Internal Functions *
102	*******************************************************************************/
103	#ifndef HAVE_DBGHELP
104
105	/**
106	* Initializes the symbol tree.
107	*/
108	static int dbgfR3SymbolInit(PVM pVM)
109	{
110	PDBGFSYM pSym = (PDBGFSYM)MMR3HeapAlloc(pVM, MM_TAG_DBGF_SYMBOL, sizeof(*pSym));
111	if (pSym)
112	{
113	pSym->Core.Key = 0;
114	pSym->Core.KeyLast = ~0;
115	pSym->pModule = NULL;
116	pSym->szName[0] = '\0';
117	if (RTAvlrGCPtrInsert(&pVM->dbgf.s.SymbolTree, &pSym->Core))
118	return VINF_SUCCESS;
119	AssertReleaseMsgFailed(("Failed to insert %RGv-%RGv!\n", pSym->Core.Key, pSym->Core.KeyLast));
120	return VERR_INTERNAL_ERROR;
121	}
122	return VERR_NO_MEMORY;
123	}
124
125
126	/**
127	* Insert a record into the symbol tree.
128	*/
129	static int dbgfR3SymbolInsert(PVM pVM, const char *pszName, RTGCPTR Address, size_t cb, PDBGFMOD pModule)
130	{
131	/*
132	* Make the address space node.
133	*/
134	size_t cchName = strlen(pszName) + 1;
135	PDBGFSYM pSym = (PDBGFSYM)MMR3HeapAlloc(pVM, MM_TAG_DBGF_SYMBOL, RT_OFFSETOF(DBGFSYM, szName[cchName]));
136	if (pSym)
137	{
138	pSym->Core.Key = Address;
139	pSym->Core.KeyLast = Address + cb;
140	pSym->pModule = pModule;
141	memcpy(pSym->szName, pszName, cchName);
142
143	PDBGFSYM pOld = (PDBGFSYM)RTAvlrGCPtrRangeGet(&pVM->dbgf.s.SymbolTree, (RTGCPTR)Address);
144	if (pOld)
145	{
146	pSym->Core.KeyLast = pOld->Core.KeyLast;
147	if (pOld->Core.Key == pSym->Core.Key)
148	{
149	pOld = (PDBGFSYM)RTAvlrGCPtrRemove(&pVM->dbgf.s.SymbolTree, (RTGCPTR)Address);
150	AssertRelease(pOld);
151	MMR3HeapFree(pOld);
152	}
153	else
154	pOld->Core.KeyLast = Address - 1;
155	if (RTAvlrGCPtrInsert(&pVM->dbgf.s.SymbolTree, &pSym->Core))
156	{
157	/*
158	* Make the name space node.
159	*/
160	PDBGFSYMSPACE pName = (PDBGFSYMSPACE)RTStrSpaceGet(pVM->dbgf.s.pSymbolSpace, pszName);
161	if (!pName)
162	{
163	/* make new symbol space node. */
164	PDBGFSYMSPACE pName = (PDBGFSYMSPACE)MMR3HeapAlloc(pVM, MM_TAG_DBGF_SYMBOL, sizeof(*pName) + cchName);
165	if (pName)
166	{
167	pName->Core.pszString = (char *)memcpy(pName + 1, pszName, cchName);
168	pName->pSym = pSym;
169	if (RTStrSpaceInsert(pVM->dbgf.s.pSymbolSpace, &pName->Core))
170	return VINF_SUCCESS;
171	}
172	else
173	return VINF_SUCCESS;
174	}
175	else
176	{
177	/* Add to existing symbol name. */
178	pSym->pNext = pName->pSym;
179	pName->pSym = pSym;
180	return VINF_SUCCESS;
181	}
182	}
183	AssertReleaseMsgFailed(("Failed to insert %RGv-%RGv!\n", pSym->Core.Key, pSym->Core.KeyLast));
184	}
185	else
186	AssertMsgFailed(("pOld! %RGv %s\n", pSym->Core.Key, pszName));
187	return VERR_INTERNAL_ERROR;
188
189	}
190	return VERR_NO_MEMORY;
191	}
192
193
194	/**
195	* Get nearest symbol.
196	* @returns NULL if no symbol was the for that address.
197	*/
198	static PDBGFSYM dbgfR3SymbolGetAddr(PVM pVM, RTGCPTR Address)
199	{
200	PDBGFSYM pSym = (PDBGFSYM)RTAvlrGCPtrRangeGet(&pVM->dbgf.s.SymbolTree, Address);
201	Assert(pSym);
202	if (pSym && pSym->szName[0])
203	return pSym;
204	return NULL;
205	}
206
207
208	/**
209	* Get first symbol.
210	* @returns NULL if no symbol by that name.
211	*/
212	static PDBGFSYM dbgfR3SymbolGetName(PVM pVM, const char *pszSymbol)
213	{
214	PDBGFSYMSPACE pName = (PDBGFSYMSPACE)RTStrSpaceGet(pVM->dbgf.s.pSymbolSpace, pszSymbol);
215	if (pName)
216	return pName->pSym;
217	return NULL;
218	}
219
220	#endif
221
222
223	/**
224	* Strips all kind of spaces from head and tail of a string.
225	*/
226	static char dbgfR3Strip(char psz)
227	{
228	while (psz && isspace(psz))
229	psz++;
230	char *psz2 = strchr(psz, '\0') - 1;
231	while (psz2 >= psz && isspace(*psz2))
232	*psz2-- = '\0';
233	return psz;
234	}
235
236
237	/**
238	* Initialize the debug info for a VM.
239	*
240	* This will check the CFGM for any symbols or symbol files
241	* which needs loading.
242	*
243	* @returns VBox status code.
244	* @param pVM The VM handle.
245	*/
246	int dbgfR3SymInit(PVM pVM)
247	{
248	int rc;
249
250	/*
251	* Initialize the symbol table.
252	*/
253	pVM->dbgf.s.pSymbolSpace = (PRTSTRSPACE)MMR3HeapAllocZ(pVM, MM_TAG_DBGF_SYMBOL, sizeof(*pVM->dbgf.s.pSymbolSpace));
254	AssertReturn(pVM->dbgf.s.pSymbolSpace, VERR_NO_MEMORY);
255
256	#ifndef HAVE_DBGHELP
257	/* modules & lines later */
258	rc = dbgfR3SymbolInit(pVM);
259	if (RT_FAILURE(rc))
260	return rc;
261	pVM->dbgf.s.fSymInited = true;
262	#endif
263
264	/*
265	* Check if there are 'loadsyms' commands in the configuration.
266	*/
267	PCFGMNODE pNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/DBGF/loadsyms/");
268	if (pNode)
269	{
270	/*
271	* Enumerate the commands.
272	*/
273	for (PCFGMNODE pCmdNode = CFGMR3GetFirstChild(pNode);
274	pCmdNode;
275	pCmdNode = CFGMR3GetNextChild(pCmdNode))
276	{
277	char szCmdName[128];
278	CFGMR3GetName(pCmdNode, &szCmdName[0], sizeof(szCmdName));
279
280	/* File */
281	char *pszFilename;
282	rc = CFGMR3QueryStringAlloc(pCmdNode, "Filename", &pszFilename);
283	AssertMsgRCReturn(rc, ("rc=%Rrc querying the 'File' attribute of '/DBGF/loadsyms/%s'!\n", rc, szCmdName), rc);
284
285	/* Delta (optional) */
286	RTGCINTPTR offDelta;
287	rc = CFGMR3QueryGCPtrS(pNode, "Delta", &offDelta);
288	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
289	offDelta = 0;
290	else
291	AssertMsgRCReturn(rc, ("rc=%Rrc querying the 'Delta' attribute of '/DBGF/loadsyms/%s'!\n", rc, szCmdName), rc);
292
293	/* Module (optional) */
294	char *pszModule;
295	rc = CFGMR3QueryStringAlloc(pCmdNode, "Module", &pszModule);
296	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
297	pszModule = NULL;
298	else
299	AssertMsgRCReturn(rc, ("rc=%Rrc querying the 'Module' attribute of '/DBGF/loadsyms/%s'!\n", rc, szCmdName), rc);
300
301	/* Module (optional) */
302	RTGCUINTPTR ModuleAddress;
303	rc = CFGMR3QueryGCPtrU(pNode, "ModuleAddress", &ModuleAddress);
304	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
305	ModuleAddress = 0;
306	else
307	AssertMsgRCReturn(rc, ("rc=%Rrc querying the 'ModuleAddress' attribute of '/DBGF/loadsyms/%s'!\n", rc, szCmdName), rc);
308
309	/* Image size (optional) */
310	RTGCUINTPTR cbModule;
311	rc = CFGMR3QueryGCPtrU(pNode, "ModuleSize", &cbModule);
312	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
313	cbModule = 0;
314	else
315	AssertMsgRCReturn(rc, ("rc=%Rrc querying the 'ModuleAddress' attribute of '/DBGF/loadsyms/%s'!\n", rc, szCmdName), rc);
316
317
318	/*
319	* Execute the command.
320	*/
321	rc = DBGFR3ModuleLoad(pVM, pszFilename, offDelta, pszModule, ModuleAddress, cbModule);
322	AssertMsgRCReturn(rc, ("pszFilename=%s offDelta=%RGv pszModule=%s ModuleAddress=%RGv cbModule=%RGv\n",
323	pszFilename, offDelta, pszModule, ModuleAddress, cbModule), rc);
324
325	MMR3HeapFree(pszModule);
326	MMR3HeapFree(pszFilename);
327	}
328	}
329
330	/*
331	* Check if there are any 'symadd' commands in the configuration.
332	*/
333
334	return VINF_SUCCESS;
335	}
336
337
338	/**
339	* We delay certain
340	* Initialize the debug info for a VM.
341	*/
342	int dbgfR3SymLazyInit(PVM pVM)
343	{
344	if (pVM->dbgf.s.fSymInited)
345	return VINF_SUCCESS;
346	#ifdef HAVE_DBGHELP
347	if (SymInitialize(pVM, NULL, FALSE))
348	{
349	pVM->dbgf.s.fSymInited = true;
350	SymSetOptions(SYMOPT_LOAD_LINES \| SYMOPT_AUTO_PUBLICS \| SYMOPT_ALLOW_ABSOLUTE_SYMBOLS);
351
352	/*
353	* Enumerate all modules loaded by PDM and add them to the symbol database.
354	*/
355	PDMR3EnumModules(pVM, dbgfR3EnumModules, NULL);
356	return VINF_SUCCESS;
357	}
358	return win32Error(pVM);
359	#else
360	return VINF_SUCCESS;
361	#endif
362	}
363
364
365	#ifdef HAVE_DBGHELP
366	/**
367	* Module enumeration callback function.
368	*
369	* @returns VBox status.
370	* Failure will stop the search and return the return code.
371	* Warnings will be ignored and not returned.
372	* @param pVM VM Handle.
373	* @param pszFilename Module filename.
374	* @param pszName Module name. (short and unique)
375	* @param ImageBase Address where to executable image is loaded.
376	* @param cbImage Size of the executable image.
377	* @param fGC Set if guest context, clear if host context.
378	* @param pvArg User argument.
379	*/
380	static DECLCALLBACK(int) dbgfR3EnumModules(PVM pVM, const char pszFilename, const char pszName, RTUINTPTR ImageBase, size_t cbImage, bool fGC)
381	{
382	if (fGC)
383	{
384	DWORD64 LoadedImageBase = SymLoadModule64(pVM, NULL, (char )(void )pszFilename, (char )(void )pszName, ImageBase, cbImage);
385	if (!LoadedImageBase)
386	Log(("SymLoadModule64(,,%s,,) -> lasterr=%d\n", pszFilename, GetLastError()));
387	else
388	Log(("Loaded debuginfo for %s - %s %llx\n", pszName, pszFilename, LoadedImageBase));
389	}
390	return VINF_SUCCESS;
391	}
392	#endif
393
394
395	/**
396	* Terminate the debug info repository for the specified VM.
397	*
398	* @returns VBox status.
399	* @param pVM VM Handle.
400	*/
401	int dbgfR3SymTerm(PVM pVM)
402	{
403	#ifdef HAVE_DBGHELP
404	if (pVM->dbgf.s.fSymInited)
405	SymCleanup(pVM);
406	pVM->dbgf.s.fSymInited = false;
407	return VINF_SUCCESS;
408	#else
409	pVM->dbgf.s.SymbolTree = 0; /* MM cleans up allocations */
410	pVM->dbgf.s.fSymInited = false;
411	return VINF_SUCCESS;
412	#endif
413	}
414
415
416	/** Symbol file type.. */
417	typedef enum SYMFILETYPE
418	{
419	SYMFILETYPE_UNKNOWN,
420	SYMFILETYPE_LD_MAP,
421	SYMFILETYPE_MS_MAP,
422	SYMFILETYPE_OBJDUMP,
423	SYMFILETYPE_LINUX_SYSTEM_MAP,
424	SYMFILETYPE_PDB,
425	SYMFILETYPE_DBG,
426	SYMFILETYPE_MZ,
427	SYMFILETYPE_ELF
428	} SYMFILETYPE, *PSYMFILETYPE;
429
430
431
432	/**
433	* Probe the type of a symbol information file.
434	*
435	* @returns The file type.
436	* @param pFile File handle.
437	*/
438	SYMFILETYPE dbgfR3ModuleProbe(FILE *pFile)
439	{
440	char szHead[4096];
441	size_t cchHead = fread(szHead, 1, sizeof(szHead) - 1, pFile);
442	if (cchHead > 0)
443	{
444	szHead[cchHead] = '\0';
445	if (strstr(szHead, "Preferred load address is"))
446	return SYMFILETYPE_MS_MAP;
447
448	if ( strstr(szHead, "Archive member included because of")
449	\|\| strstr(szHead, "Memory Configuration")
450	\|\| strstr(szHead, "Linker script and memory map"))
451	return SYMFILETYPE_LD_MAP;
452
453	if ( isxdigit(szHead[0])
454	&& isxdigit(szHead[1])
455	&& isxdigit(szHead[2])
456	&& isxdigit(szHead[3])
457	&& isxdigit(szHead[4])
458	&& isxdigit(szHead[5])
459	&& isxdigit(szHead[6])
460	&& isxdigit(szHead[7])
461	&& szHead[8] == ' '
462	&& isalpha(szHead[9])
463	&& szHead[10] == ' '
464	&& (isalpha(szHead[11]) \|\| szHead[11] == '_' \|\| szHead[11] == '$')
465	)
466	return SYMFILETYPE_LINUX_SYSTEM_MAP;
467
468	if ( isxdigit(szHead[0])
469	&& isxdigit(szHead[1])
470	&& isxdigit(szHead[2])
471	&& isxdigit(szHead[3])
472	&& isxdigit(szHead[4])
473	&& isxdigit(szHead[5])
474	&& isxdigit(szHead[6])
475	&& isxdigit(szHead[7])
476	&& isxdigit(szHead[8])
477	&& isxdigit(szHead[9])
478	&& isxdigit(szHead[10])
479	&& isxdigit(szHead[11])
480	&& isxdigit(szHead[12])
481	&& isxdigit(szHead[13])
482	&& isxdigit(szHead[14])
483	&& isxdigit(szHead[15])
484	&& szHead[16] == ' '
485	&& isalpha(szHead[17])
486	&& szHead[18] == ' '
487	&& (isalpha(szHead[19]) \|\| szHead[19] == '_' \|\| szHead[19] == '$')
488	)
489	return SYMFILETYPE_LINUX_SYSTEM_MAP;
490
491	if (strstr(szHead, "Microsoft C/C++ MSF") == szHead)
492	return SYMFILETYPE_PDB;
493
494	if (strstr(szHead, "ELF") == szHead + 1)
495	return SYMFILETYPE_ELF;
496
497	if ( strstr(szHead, "MZ") == szHead
498	\|\| strstr(szHead, "PE") == szHead
499	\|\| strstr(szHead, "LE") == szHead
500	\|\| strstr(szHead, "LX") == szHead
501	\|\| strstr(szHead, "NE") == szHead)
502	return SYMFILETYPE_MZ;
503
504
505	if (strstr(szHead, "file format"))
506	return SYMFILETYPE_OBJDUMP;
507	}
508
509	return SYMFILETYPE_UNKNOWN;
510	}
511
512
513	static int dbgfR3LoadLinuxSystemMap(PVM pVM, FILE *pFile, RTGCUINTPTR ModuleAddress, RTGCUINTPTR AddressDelta)
514	{
515	char szLine[4096];
516	while (fgets(szLine, sizeof(szLine), pFile))
517	{
518	/* parse the line: <address> <type> <name> */
519	const char *psz = dbgfR3Strip(szLine);
520	char *pszEnd = NULL;
521	uint64_t u64Address;
522	int rc = RTStrToUInt64Ex(psz, &pszEnd, 16, &u64Address);
523	RTGCUINTPTR Address = u64Address;
524	if ( RT_SUCCESS(rc)
525	&& (pszEnd == ' ' \|\| pszEnd == '\t')
526	&& Address == u64Address
527	&& u64Address != 0
528	&& u64Address != (RTGCUINTPTR)~0)
529	{
530	pszEnd++;
531	if ( isalpha(*pszEnd)
532	&& (pszEnd[1] == ' ' \|\| pszEnd[1] == '\t'))
533	{
534	psz = dbgfR3Strip(pszEnd + 2);
535	if (*psz)
536	{
537	int rc2 = DBGFR3SymbolAdd(pVM, ModuleAddress, Address + AddressDelta, 0, psz);
538	if (RT_FAILURE(rc2))
539	Log2(("DBGFR3SymbolAdd(,, %RGv, 0, '%s') -> %Rrc\n", Address, psz, rc2));
540	}
541	}
542	}
543	}
544	return VINF_SUCCESS;
545	}
546
547
548	/**
549	* Load debug info, optionally related to a specific module.
550	*
551	* @returns VBox status.
552	* @param pVM VM Handle.
553	* @param pszFilename Path to the file containing the symbol information.
554	* This can be the executable image, a flat symbol file of some kind or stripped debug info.
555	* @param AddressDelta The value to add to the loaded symbols.
556	* @param pszName Short hand name for the module. If not related to a module specify NULL.
557	* @param ModuleAddress Address which the image is loaded at. This will be used to reference the module other places in the api.
558	* Ignored when pszName is NULL.
559	* @param cbImage Size of the image.
560	* Ignored when pszName is NULL.
561	*/
562	VMMR3DECL(int) DBGFR3ModuleLoad(PVM pVM, const char pszFilename, RTGCUINTPTR AddressDelta, const char pszName, RTGCUINTPTR ModuleAddress, unsigned cbImage)
563	{
564	/*
565	* Lazy init.
566	*/
567	if (!pVM->dbgf.s.fSymInited)
568	{
569	int rc = dbgfR3SymLazyInit(pVM);
570	if (RT_FAILURE(rc))
571	return rc;
572	}
573
574	/*
575	* Open the load file.
576	*/
577	int rc = VINF_SUCCESS;
578	FILE *pFile = fopen(pszFilename, "rb");
579	if (pFile)
580	{
581	/*
582	* Probe the file type.
583	*/
584	SYMFILETYPE enmType = dbgfR3ModuleProbe(pFile);
585	if (enmType != SYMFILETYPE_UNKNOWN)
586	{
587	/*
588	* Add the module.
589	*/
590	if (pszName)
591	{
592	#ifdef HAVE_DBGHELP
593	/** @todo arg! checkout the inserting of modules and then loading them again.... Or just the module representation.... */
594	DWORD64 ImageBase = SymLoadModule64(pVM, NULL, (char )(void )pszFilename, (char )(void )pszName, ModuleAddress, cbImage);
595	if (!ImageBase)
596	ImageBase = SymLoadModule64(pVM, NULL, (char )(void )pszName, (char )(void )pszName, ModuleAddress, cbImage);
597	if (ImageBase)
598	{
599	AssertMsg(ModuleAddress == 0 \|\| ModuleAddress == ImageBase, ("ModuleAddres=%RGv ImageBase=%llx\n", ModuleAddress, ImageBase));
600	ModuleAddress = ImageBase;
601	}
602	else
603	rc = win32Error(pVM);
604	#else
605	rc = VERR_NOT_IMPLEMENTED;
606	#endif
607	}
608	if (RT_SUCCESS(rc))
609	{
610	/*
611	* Seek to the start of the file.
612	*/
613	rc = fseek(pFile, 0, SEEK_SET);
614	Assert(!rc);
615
616	/*
617	* Process the specific.
618	*/
619	switch (enmType)
620	{
621	case SYMFILETYPE_LINUX_SYSTEM_MAP:
622	rc = dbgfR3LoadLinuxSystemMap(pVM, pFile, ModuleAddress, AddressDelta);
623	break;
624
625	case SYMFILETYPE_PDB:
626	case SYMFILETYPE_DBG:
627	case SYMFILETYPE_MZ:
628	#ifdef HAVE_DBGHELP
629	/* done it all above! */
630	break;
631	#endif
632	case SYMFILETYPE_LD_MAP:
633	case SYMFILETYPE_MS_MAP:
634	case SYMFILETYPE_OBJDUMP:
635	case SYMFILETYPE_ELF:
636	rc = VERR_NOT_SUPPORTED;
637	break;
638
639	default:
640	AssertFailed();
641	rc = VERR_INTERNAL_ERROR;
642	break;
643	} /* file switch. */
644	} /* module added successfully. */
645	} /* format identified */
646	else
647	rc = VERR_NOT_SUPPORTED;
648	/** @todo check for read errors */
649	fclose(pFile);
650	}
651	else
652	rc = VERR_OPEN_FAILED;
653	return rc;
654	}
655
656
657	/**
658	* Interface used by PDMR3LdrRelocate for telling us that a GC module has been relocated.
659	*
660	* @param pVM The VM handle.
661	* @param OldImageBase The old image base.
662	* @param NewImageBase The new image base.
663	* @param cbImage The image size.
664	* @param pszFilename The image filename.
665	* @param pszName The module name.
666	*/
667	VMMR3DECL(void) DBGFR3ModuleRelocate(PVM pVM, RTGCUINTPTR OldImageBase, RTGCUINTPTR NewImageBase, RTGCUINTPTR cbImage,
668	const char pszFilename, const char pszName)
669	{
670	#ifdef HAVE_DBGHELP
671	if (pVM->dbgf.s.fSymInited)
672	{
673	if (!SymUnloadModule64(pVM, OldImageBase))
674	Log(("SymUnloadModule64(,%RGv) failed, lasterr=%d\n", OldImageBase, GetLastError()));
675
676	DWORD ImageSize = (DWORD)cbImage; Assert(ImageSize == cbImage);
677	DWORD64 LoadedImageBase = SymLoadModule64(pVM, NULL, (char )(void )pszFilename, (char )(void )pszName, NewImageBase, ImageSize);
678	if (!LoadedImageBase)
679	Log(("SymLoadModule64(,,%s,,) -> lasterr=%d (relocate)\n", pszFilename, GetLastError()));
680	else
681	Log(("Reloaded debuginfo for %s - %s %llx\n", pszName, pszFilename, LoadedImageBase));
682	}
683	#else
684
685	#endif
686	}
687
688
689	/**
690	* Adds a symbol to the debug info manager.
691	*
692	* @returns VBox status.
693	* @param pVM VM Handle.
694	* @param ModuleAddress Module address. Use 0 if no module.
695	* @param SymbolAddress Symbol address
696	* @param cbSymbol Size of the symbol. Use 0 if info not available.
697	* @param pszSymbol Symbol name.
698	*/
699	VMMR3DECL(int) DBGFR3SymbolAdd(PVM pVM, RTGCUINTPTR ModuleAddress, RTGCUINTPTR SymbolAddress, RTUINT cbSymbol, const char *pszSymbol)
700	{
701	/*
702	* Validate.
703	*/
704	if (!pszSymbol \|\| !*pszSymbol)
705	{
706	AssertMsgFailed(("No symbol name!\n"));
707	return VERR_INVALID_PARAMETER;
708	}
709
710	/*
711	* Lazy init.
712	*/
713	if (!pVM->dbgf.s.fSymInited)
714	{
715	int rc = dbgfR3SymLazyInit(pVM);
716	if (RT_FAILURE(rc))
717	return rc;
718	}
719
720	#ifdef HAVE_DBGHELP
721	if (SymAddSymbol(pVM, ModuleAddress, (char )(void )pszSymbol, SymbolAddress, cbSymbol, 0))
722	return VINF_SUCCESS;
723	return win32Error(pVM);
724	#else
725	/** @todo module lookup. */
726	return dbgfR3SymbolInsert(pVM, pszSymbol, SymbolAddress, cbSymbol, NULL);
727	#endif
728	}
729
730
731	/**
732	* Find symbol by address (nearest).
733	*
734	* @returns VBox status.
735	* @param pVM VM handle.
736	* @param Address Address.
737	* @param poffDisplacement Where to store the symbol displacement from Address.
738	* @param pSymbol Where to store the symbol info.
739	*/
740	VMMR3DECL(int) DBGFR3SymbolByAddr(PVM pVM, RTGCUINTPTR Address, PRTGCINTPTR poffDisplacement, PDBGFSYMBOL pSymbol)
741	{
742	/*
743	* Lazy init.
744	*/
745	if (!pVM->dbgf.s.fSymInited)
746	{
747	int rc = dbgfR3SymLazyInit(pVM);
748	if (RT_FAILURE(rc))
749	return rc;
750	}
751
752	/*
753	* Look it up.
754	*/
755	#ifdef HAVE_DBGHELP
756	char achBuffer[sizeof(IMAGEHLP_SYMBOL64) + DBGF_SYMBOL_NAME_LENGTH * sizeof(TCHAR) + sizeof(ULONG64)];
757	PIMAGEHLP_SYMBOL64 pSym = (PIMAGEHLP_SYMBOL64)&achBuffer[0];
758	pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
759	pSym->MaxNameLength = DBGF_SYMBOL_NAME_LENGTH;
760
761	if (SymGetSymFromAddr64(pVM, Address, (PDWORD64)poffDisplacement, pSym))
762	{
763	pSymbol->Value = (RTGCUINTPTR)pSym->Address;
764	pSymbol->cb = pSym->Size;
765	pSymbol->fFlags = pSym->Flags;
766	strcpy(pSymbol->szName, pSym->Name);
767	return VINF_SUCCESS;
768	}
769	//return win32Error(pVM);
770
771	#else
772
773	PDBGFSYM pSym = dbgfR3SymbolGetAddr(pVM, Address);
774	if (pSym)
775	{
776	pSymbol->Value = pSym->Core.Key;
777	pSymbol->cb = pSym->Core.KeyLast - pSym->Core.Key + 1;
778	pSymbol->fFlags = 0;
779	pSymbol->szName[0] = '\0';
780	strncat(pSymbol->szName, pSym->szName, sizeof(pSymbol->szName) - 1);
781	if (poffDisplacement)
782	*poffDisplacement = Address - pSymbol->Value;
783	return VINF_SUCCESS;
784	}
785
786	#endif
787
788	/*
789	* Try PDM.
790	*/
791	if (MMHyperIsInsideArea(pVM, Address))
792	{
793	char szModName[64];
794	RTRCPTR RCPtrMod;
795	char szNearSym1[260];
796	RTRCPTR RCPtrNearSym1;
797	char szNearSym2[260];
798	RTRCPTR RCPtrNearSym2;
799	int rc = PDMR3LdrQueryRCModFromPC(pVM, Address,
800	&szModName[0], sizeof(szModName), &RCPtrMod,
801	&szNearSym1[0], sizeof(szNearSym1), &RCPtrNearSym1,
802	&szNearSym2[0], sizeof(szNearSym2), &RCPtrNearSym2);
803	if (RT_SUCCESS(rc) && szNearSym1[0])
804	{
805	pSymbol->Value = RCPtrNearSym1;
806	pSymbol->cb = RCPtrNearSym2 > RCPtrNearSym1 ? RCPtrNearSym2 - RCPtrNearSym1 : 0;
807	pSymbol->fFlags = 0;
808	pSymbol->szName[0] = '\0';
809	strncat(pSymbol->szName, szNearSym1, sizeof(pSymbol->szName) - 1);
810	if (poffDisplacement)
811	*poffDisplacement = Address - pSymbol->Value;
812	return VINF_SUCCESS;
813	}
814	}
815
816	return VERR_SYMBOL_NOT_FOUND;
817	}
818
819
820	/**
821	* Find symbol by name (first).
822	*
823	* @returns VBox status.
824	* @param pVM VM handle.
825	* @param pszSymbol Symbol name.
826	* @param pSymbol Where to store the symbol info.
827	*/
828	VMMR3DECL(int) DBGFR3SymbolByName(PVM pVM, const char *pszSymbol, PDBGFSYMBOL pSymbol)
829	{
830	/*
831	* Lazy init.
832	*/
833	if (!pVM->dbgf.s.fSymInited)
834	{
835	int rc = dbgfR3SymLazyInit(pVM);
836	if (RT_FAILURE(rc))
837	return rc;
838	}
839
840	/*
841	* Look it up.
842	*/
843	#ifdef HAVE_DBGHELP
844	char achBuffer[sizeof(IMAGEHLP_SYMBOL64) + DBGF_SYMBOL_NAME_LENGTH * sizeof(TCHAR) + sizeof(ULONG64)];
845	PIMAGEHLP_SYMBOL64 pSym = (PIMAGEHLP_SYMBOL64)&achBuffer[0];
846	pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
847	pSym->MaxNameLength = DBGF_SYMBOL_NAME_LENGTH;
848
849	if (SymGetSymFromName64(pVM, (char )(void )pszSymbol, pSym))
850	{
851	pSymbol->Value = (RTGCUINTPTR)pSym->Address;
852	pSymbol->cb = pSym->Size;
853	pSymbol->fFlags = pSym->Flags;
854	strcpy(pSymbol->szName, pSym->Name);
855	return VINF_SUCCESS;
856	}
857	return win32Error(pVM);
858	#else
859
860	PDBGFSYM pSym = dbgfR3SymbolGetName(pVM, pszSymbol);
861	if (pSym)
862	{
863	pSymbol->Value = pSym->Core.Key;
864	pSymbol->cb = pSym->Core.KeyLast - pSym->Core.Key + 1;
865	pSymbol->fFlags = 0;
866	pSymbol->szName[0] = '\0';
867	strncat(pSymbol->szName, pSym->szName, sizeof(pSymbol->szName) - 1);
868	return VINF_SUCCESS;
869	}
870
871	return VERR_SYMBOL_NOT_FOUND;
872	#endif
873	}
874
875
876	/**
877	* Duplicates a symbol.
878	*
879	* @returns Pointer to the duplicated symbol.
880	* @param pVM The VM handle.
881	* @param pSymbol The symbol to duplicate.
882	*/
883	static PDBGFSYMBOL dbgfR3SymbolDup(PVM pVM, PCDBGFSYMBOL pSymbol)
884	{
885	size_t cb = strlen(pSymbol->szName) + RT_OFFSETOF(DBGFSYMBOL, szName[1]);
886	PDBGFSYMBOL pDup = (PDBGFSYMBOL)MMR3HeapAlloc(pVM, MM_TAG_DBGF_SYMBOL_DUP, cb);
887	if (pDup)
888	memcpy(pDup, pSymbol, cb);
889	return pDup;
890	}
891
892
893	/**
894	* Find symbol by address (nearest), allocate return buffer.
895	*
896	* @returns Pointer to the symbol. Must be freed using DBGFR3SymbolFree().
897	* @returns NULL if the symbol was not found or if we're out of memory.
898	* @param pVM VM handle.
899	* @param Address Address.
900	* @param poffDisplacement Where to store the symbol displacement from Address.
901	*/
902	VMMR3DECL(PDBGFSYMBOL) DBGFR3SymbolByAddrAlloc(PVM pVM, RTGCUINTPTR Address, PRTGCINTPTR poffDisplacement)
903	{
904	DBGFSYMBOL Symbol;
905	int rc = DBGFR3SymbolByAddr(pVM, Address, poffDisplacement, &Symbol);
906	if (RT_FAILURE(rc))
907	return NULL;
908	return dbgfR3SymbolDup(pVM, &Symbol);
909	}
910
911
912	/**
913	* Find symbol by name (first), allocate return buffer.
914	*
915	* @returns Pointer to the symbol. Must be freed using DBGFR3SymbolFree().
916	* @returns NULL if the symbol was not found or if we're out of memory.
917	* @param pVM VM handle.
918	* @param pszSymbol Symbol name.
919	*/
920	VMMR3DECL(PDBGFSYMBOL) DBGFR3SymbolByNameAlloc(PVM pVM, const char *pszSymbol)
921	{
922	DBGFSYMBOL Symbol;
923	int rc = DBGFR3SymbolByName(pVM, pszSymbol, &Symbol);
924	if (RT_FAILURE(rc))
925	return NULL;
926	return dbgfR3SymbolDup(pVM, &Symbol);
927	}
928
929
930	/**
931	* Frees a symbol returned by DBGFR3SymbolbyNameAlloc() or DBGFR3SymbolByAddressAlloc().
932	*
933	* @param pSymbol Pointer to the symbol.
934	*/
935	VMMR3DECL(void) DBGFR3SymbolFree(PDBGFSYMBOL pSymbol)
936	{
937	if (pSymbol)
938	MMR3HeapFree(pSymbol);
939	}
940
941
942	/**
943	* Find line by address (nearest).
944	*
945	* @returns VBox status.
946	* @param pVM VM handle.
947	* @param Address Address.
948	* @param poffDisplacement Where to store the line displacement from Address.
949	* @param pLine Where to store the line info.
950	*/
951	VMMR3DECL(int) DBGFR3LineByAddr(PVM pVM, RTGCUINTPTR Address, PRTGCINTPTR poffDisplacement, PDBGFLINE pLine)
952	{
953	/*
954	* Lazy init.
955	*/
956	if (!pVM->dbgf.s.fSymInited)
957	{
958	int rc = dbgfR3SymLazyInit(pVM);
959	if (RT_FAILURE(rc))
960	return rc;
961	}
962
963	/*
964	* Look it up.
965	*/
966	#ifdef HAVE_DBGHELP
967	IMAGEHLP_LINE64 Line = {0};
968	DWORD off = 0;
969	Line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
970	if (SymGetLineFromAddr64(pVM, Address, &off, &Line))
971	{
972	if (poffDisplacement)
973	*poffDisplacement = (long)off;
974	pLine->Address = (RTGCUINTPTR)Line.Address;
975	pLine->uLineNo = Line.LineNumber;
976	pLine->szFilename[0] = '\0';
977	strncat(pLine->szFilename, Line.FileName, sizeof(pLine->szFilename));
978	return VINF_SUCCESS;
979	}
980	return win32Error(pVM);
981	#else
982	return VERR_NOT_IMPLEMENTED;
983	#endif
984	}
985
986
987	/**
988	* Duplicates a line.
989	*
990	* @returns VBox status code.
991	* @param pVM The VM handle.
992	* @param pLine The line to duplicate.
993	*/
994	static PDBGFLINE dbgfR3LineDup(PVM pVM, PCDBGFLINE pLine)
995	{
996	size_t cb = strlen(pLine->szFilename) + RT_OFFSETOF(DBGFLINE, szFilename[1]);
997	PDBGFLINE pDup = (PDBGFLINE)MMR3HeapAlloc(pVM, MM_TAG_DBGF_LINE_DUP, cb);
998	if (pDup)
999	memcpy(pDup, pLine, cb);
1000	return pDup;
1001	}
1002
1003
1004	/**
1005	* Find line by address (nearest), allocate return buffer.
1006	*
1007	* @returns Pointer to the line. Must be freed using DBGFR3LineFree().
1008	* @returns NULL if the line was not found or if we're out of memory.
1009	* @param pVM VM handle.
1010	* @param Address Address.
1011	* @param poffDisplacement Where to store the line displacement from Address.
1012	*/
1013	VMMR3DECL(PDBGFLINE) DBGFR3LineByAddrAlloc(PVM pVM, RTGCUINTPTR Address, PRTGCINTPTR poffDisplacement)
1014	{
1015	DBGFLINE Line;
1016	int rc = DBGFR3LineByAddr(pVM, Address, poffDisplacement, &Line);
1017	if (RT_FAILURE(rc))
1018	return NULL;
1019	return dbgfR3LineDup(pVM, &Line);
1020	}
1021
1022
1023	/**
1024	* Frees a line returned by DBGFR3LineByAddressAlloc().
1025	*
1026	* @param pLine Pointer to the line.
1027	*/
1028	VMMR3DECL(void) DBGFR3LineFree(PDBGFLINE pLine)
1029	{
1030	if (pLine)
1031	MMR3HeapFree(pLine);
1032	}
1033
1034
1035	#ifdef HAVE_DBGHELP
1036
1037	//static BOOL CALLBACK win32EnumModulesCallback(PSTR ModuleName, DWORD64 BaseOfDll, PVOID UserContext)
1038	//{
1039	// Log(("dbg: module: %08llx %s\n", ModuleName, BaseOfDll));
1040	// return TRUE;
1041	//}
1042
1043	static int win32Error(PVM pVM)
1044	{
1045	int rc = GetLastError();
1046	Log(("Lasterror=%d\n", rc));
1047
1048	//SymEnumerateModules64(pVM, win32EnumModulesCallback, NULL);
1049
1050	return VERR_GENERAL_FAILURE;
1051	}
1052	#endif
1053

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source: vbox/trunk/src/VBox/VMM/DBGFSym.cpp@ 16317

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