DBGFAddrSpace.cpp@ 47682

Last change on this file since 47682 was 46946, checked in by vboxsync, 11 years ago
Install bios symbol files in bin/VBoxDbgSyms/ and make DBGF look there.
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File size: 43.1 KB

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1	/* $Id: DBGFAddrSpace.cpp 46946 2013-07-03 16:15:51Z vboxsync $ */
2	/** @file
3	* DBGF - Debugger Facility, Address Space Management.
4	*/
5
6	/*
7	* Copyright (C) 2008-2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/** @page pg_dbgf_addr_space DBGFAddrSpace - Address Space Management
20	*
21	* What's an address space? It's mainly a convenient way of stuffing
22	* module segments and ad-hoc symbols together. It will also help out
23	* when the debugger gets extended to deal with user processes later.
24	*
25	* There are two standard address spaces that will always be present:
26	* - The physical address space.
27	* - The global virtual address space.
28	*
29	* Additional address spaces will be added and removed at runtime for
30	* guest processes. The global virtual address space will be used to
31	* track the kernel parts of the OS, or at least the bits of the kernel
32	* that is part of all address spaces (mac os x and 4G/4G patched linux).
33	*
34	*/
35
36	/*******************************************************************************
37	* Header Files *
38	*******************************************************************************/
39	#define LOG_GROUP LOG_GROUP_DBGF
40	#include <VBox/vmm/dbgf.h>
41	#include <VBox/vmm/hm.h>
42	#include <VBox/vmm/pdmapi.h>
43	#include <VBox/vmm/mm.h>
44	#ifdef VBOX_WITH_RAW_MODE
45	# include <VBox/vmm/patm.h>
46	#endif
47	#include "DBGFInternal.h"
48	#include <VBox/vmm/uvm.h>
49	#include <VBox/vmm/vm.h>
50	#include <VBox/err.h>
51	#include <VBox/log.h>
52
53	#include <iprt/asm.h>
54	#include <iprt/assert.h>
55	#include <iprt/ctype.h>
56	#include <iprt/env.h>
57	#include <iprt/mem.h>
58	#include <iprt/path.h>
59	#include <iprt/param.h>
60
61
62	/*******************************************************************************
63	* Structures and Typedefs *
64	*******************************************************************************/
65	/**
66	* Address space database node.
67	*/
68	typedef struct DBGFASDBNODE
69	{
70	/** The node core for DBGF::AsHandleTree, the key is the address space handle. */
71	AVLPVNODECORE HandleCore;
72	/** The node core for DBGF::AsPidTree, the key is the process id. */
73	AVLU32NODECORE PidCore;
74	/** The node core for DBGF::AsNameSpace, the string is the address space name. */
75	RTSTRSPACECORE NameCore;
76
77	} DBGFASDBNODE;
78	/** Pointer to an address space database node. */
79	typedef DBGFASDBNODE *PDBGFASDBNODE;
80
81
82	/**
83	* For dbgfR3AsLoadImageOpenData and dbgfR3AsLoadMapOpenData.
84	*/
85	typedef struct DBGFR3ASLOADOPENDATA
86	{
87	const char *pszModName;
88	RTGCUINTPTR uSubtrahend;
89	uint32_t fFlags;
90	RTDBGMOD hMod;
91	} DBGFR3ASLOADOPENDATA;
92
93	/**
94	* Callback for dbgfR3AsSearchPath and dbgfR3AsSearchEnvPath.
95	*
96	* @returns VBox status code. If success, then the search is completed.
97	* @param pszFilename The file name under evaluation.
98	* @param pvUser The user argument.
99	*/
100	typedef int FNDBGFR3ASSEARCHOPEN(const char pszFilename, void pvUser);
101	/** Pointer to a FNDBGFR3ASSEARCHOPEN. */
102	typedef FNDBGFR3ASSEARCHOPEN *PFNDBGFR3ASSEARCHOPEN;
103
104
105	/*******************************************************************************
106	* Defined Constants And Macros *
107	*******************************************************************************/
108	/** Locks the address space database for writing. */
109	#define DBGF_AS_DB_LOCK_WRITE(pUVM) \
110	do { \
111	int rcSem = RTSemRWRequestWrite((pUVM)->dbgf.s.hAsDbLock, RT_INDEFINITE_WAIT); \
112	AssertRC(rcSem); \
113	} while (0)
114
115	/** Unlocks the address space database after writing. */
116	#define DBGF_AS_DB_UNLOCK_WRITE(pUVM) \
117	do { \
118	int rcSem = RTSemRWReleaseWrite((pUVM)->dbgf.s.hAsDbLock); \
119	AssertRC(rcSem); \
120	} while (0)
121
122	/** Locks the address space database for reading. */
123	#define DBGF_AS_DB_LOCK_READ(pUVM) \
124	do { \
125	int rcSem = RTSemRWRequestRead((pUVM)->dbgf.s.hAsDbLock, RT_INDEFINITE_WAIT); \
126	AssertRC(rcSem); \
127	} while (0)
128
129	/** Unlocks the address space database after reading. */
130	#define DBGF_AS_DB_UNLOCK_READ(pUVM) \
131	do { \
132	int rcSem = RTSemRWReleaseRead((pUVM)->dbgf.s.hAsDbLock); \
133	AssertRC(rcSem); \
134	} while (0)
135
136
137
138	/**
139	* Initializes the address space parts of DBGF.
140	*
141	* @returns VBox status code.
142	* @param pUVM The user mode VM handle.
143	*/
144	int dbgfR3AsInit(PUVM pUVM)
145	{
146	Assert(pUVM->pVM);
147
148	/*
149	* Create the semaphore.
150	*/
151	int rc = RTSemRWCreate(&pUVM->dbgf.s.hAsDbLock);
152	AssertRCReturn(rc, rc);
153
154	/*
155	* Create the debugging config instance and set it up, defaulting to
156	* deferred loading in order to keep things fast.
157	*/
158	rc = RTDbgCfgCreate(&pUVM->dbgf.s.hDbgCfg, NULL, true /fNativePaths/);
159	AssertRCReturn(rc, rc);
160	rc = RTDbgCfgChangeUInt(pUVM->dbgf.s.hDbgCfg, RTDBGCFGPROP_FLAGS, RTDBGCFGOP_PREPEND,
161	RTDBGCFG_FLAGS_DEFERRED);
162	AssertRCReturn(rc, rc);
163
164	static struct
165	{
166	RTDBGCFGPROP enmProp;
167	const char *pszEnvName;
168	const char *pszCfgName;
169	} const s_aProps[] =
170	{
171	{ RTDBGCFGPROP_FLAGS, "VBOXDBG_FLAGS", "Flags" },
172	{ RTDBGCFGPROP_PATH, "VBOXDBG_PATH", "Path" },
173	{ RTDBGCFGPROP_SUFFIXES, "VBOXDBG_SUFFIXES", "Suffixes" },
174	{ RTDBGCFGPROP_SRC_PATH, "VBOXDBG_SRC_PATH", "SrcPath" },
175	};
176	PCFGMNODE pCfgDbgf = CFGMR3GetChild(CFGMR3GetRootU(pUVM), "/DBGF");
177	for (unsigned i = 0; i < RT_ELEMENTS(s_aProps); i++)
178	{
179	const char *pszEnvValue = RTEnvGet(s_aProps[i].pszEnvName);
180	if (pszEnvValue)
181	{
182	rc = RTDbgCfgChangeString(pUVM->dbgf.s.hDbgCfg, s_aProps[i].enmProp, RTDBGCFGOP_PREPEND, pszEnvValue);
183	if (RT_FAILURE(rc))
184	return VMR3SetError(pUVM, rc, RT_SRC_POS,
185	"DBGF Config Error: %s=%s -> %Rrc", s_aProps[i].pszEnvName, pszEnvValue, rc);
186	}
187
188	char *pszCfgValue;
189	rc = CFGMR3QueryStringAllocDef(pCfgDbgf, s_aProps[i].pszCfgName, &pszCfgValue, NULL);
190	if (RT_FAILURE(rc))
191	return VMR3SetError(pUVM, rc, RT_SRC_POS,
192	"DBGF Config Error: Querying /DBGF/%s -> %Rrc", s_aProps[i].pszCfgName, rc);
193	if (pszCfgValue)
194	{
195	rc = RTDbgCfgChangeString(pUVM->dbgf.s.hDbgCfg, s_aProps[i].enmProp, RTDBGCFGOP_PREPEND, pszCfgValue);
196	if (RT_FAILURE(rc))
197	return VMR3SetError(pUVM, rc, RT_SRC_POS,
198	"DBGF Config Error: /DBGF/%s=%s -> %Rrc", s_aProps[i].pszCfgName, pszCfgValue, rc);
199	}
200	}
201
202	/*
203	* Prepend the VBoxDbgSyms directory to the path.
204	*/
205	char szPath[RTPATH_MAX];
206	rc = RTPathAppPrivateNoArch(szPath, sizeof(szPath));
207	AssertRCReturn(rc, rc);
208	#ifdef RT_OS_DARWIN
209	rc = RTPathAppend(szPath, sizeof(szPath), "../Resources/VBoxDbgSyms/");
210	#else
211	rc = RTPathAppend(szPath, sizeof(szPath), "VBoxDbgSyms/");
212	#endif
213	AssertRCReturn(rc, rc);
214	rc = RTDbgCfgChangeString(pUVM->dbgf.s.hDbgCfg, RTDBGCFGPROP_PATH, RTDBGCFGOP_PREPEND, szPath);
215	AssertRCReturn(rc, rc);
216
217	/*
218	* Create the standard address spaces.
219	*/
220	RTDBGAS hDbgAs;
221	rc = RTDbgAsCreate(&hDbgAs, 0, RTGCPTR_MAX, "Global");
222	AssertRCReturn(rc, rc);
223	rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
224	AssertRCReturn(rc, rc);
225	RTDbgAsRetain(hDbgAs);
226	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_GLOBAL)] = hDbgAs;
227
228	RTDbgAsRetain(hDbgAs);
229	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_KERNEL)] = hDbgAs;
230
231	rc = RTDbgAsCreate(&hDbgAs, 0, RTGCPHYS_MAX, "Physical");
232	AssertRCReturn(rc, rc);
233	rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
234	AssertRCReturn(rc, rc);
235	RTDbgAsRetain(hDbgAs);
236	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_PHYS)] = hDbgAs;
237
238	rc = RTDbgAsCreate(&hDbgAs, 0, RTRCPTR_MAX, "HyperRawMode");
239	AssertRCReturn(rc, rc);
240	rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
241	AssertRCReturn(rc, rc);
242	RTDbgAsRetain(hDbgAs);
243	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)] = hDbgAs;
244	RTDbgAsRetain(hDbgAs);
245	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC_AND_GC_GLOBAL)] = hDbgAs;
246
247	rc = RTDbgAsCreate(&hDbgAs, 0, RTR0PTR_MAX, "HyperRing0");
248	AssertRCReturn(rc, rc);
249	rc = DBGFR3AsAdd(pUVM, hDbgAs, NIL_RTPROCESS);
250	AssertRCReturn(rc, rc);
251	RTDbgAsRetain(hDbgAs);
252	pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_R0)] = hDbgAs;
253
254	return VINF_SUCCESS;
255	}
256
257
258	/**
259	* Callback used by dbgfR3AsTerm / RTAvlPVDestroy to release an address space.
260	*
261	* @returns 0.
262	* @param pNode The address space database node.
263	* @param pvIgnore NULL.
264	*/
265	static DECLCALLBACK(int) dbgfR3AsTermDestroyNode(PAVLPVNODECORE pNode, void *pvIgnore)
266	{
267	PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)pNode;
268	RTDbgAsRelease((RTDBGAS)pDbNode->HandleCore.Key);
269	pDbNode->HandleCore.Key = NIL_RTDBGAS;
270	/* Don't bother freeing it here as MM will free it soon and MM is much at
271	it when doing it wholesale instead of piecemeal. */
272	NOREF(pvIgnore);
273	return 0;
274	}
275
276
277	/**
278	* Terminates the address space parts of DBGF.
279	*
280	* @param pUVM The user mode VM handle.
281	*/
282	void dbgfR3AsTerm(PUVM pUVM)
283	{
284	/*
285	* Create the semaphore.
286	*/
287	int rc = RTSemRWDestroy(pUVM->dbgf.s.hAsDbLock);
288	AssertRC(rc);
289	pUVM->dbgf.s.hAsDbLock = NIL_RTSEMRW;
290
291	/*
292	* Release all the address spaces.
293	*/
294	RTAvlPVDestroy(&pUVM->dbgf.s.AsHandleTree, dbgfR3AsTermDestroyNode, NULL);
295	for (size_t i = 0; i < RT_ELEMENTS(pUVM->dbgf.s.ahAsAliases); i++)
296	{
297	RTDbgAsRelease(pUVM->dbgf.s.ahAsAliases[i]);
298	pUVM->dbgf.s.ahAsAliases[i] = NIL_RTDBGAS;
299	}
300	}
301
302
303	/**
304	* Relocates the RC address space.
305	*
306	* @param pUVM The user mode VM handle.
307	* @param offDelta The relocation delta.
308	*/
309	void dbgfR3AsRelocate(PUVM pUVM, RTGCUINTPTR offDelta)
310	{
311	/*
312	* We will relocate the raw-mode context modules by offDelta if they have
313	* been injected into the the DBGF_AS_RC map.
314	*/
315	if ( pUVM->dbgf.s.afAsAliasPopuplated[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)]
316	&& offDelta != 0)
317	{
318	RTDBGAS hAs = pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(DBGF_AS_RC)];
319
320	/* Take a snapshot of the modules as we might have overlapping
321	addresses between the previous and new mapping. */
322	RTDbgAsLockExcl(hAs);
323	uint32_t cModules = RTDbgAsModuleCount(hAs);
324	if (cModules > 0 && cModules < _4K)
325	{
326	struct DBGFASRELOCENTRY
327	{
328	RTDBGMOD hDbgMod;
329	RTRCPTR uOldAddr;
330	} paEntries = (struct DBGFASRELOCENTRY )RTMemTmpAllocZ(sizeof(paEntries[0]) * cModules);
331	if (paEntries)
332	{
333	/* Snapshot. */
334	for (uint32_t i = 0; i < cModules; i++)
335	{
336	paEntries[i].hDbgMod = RTDbgAsModuleByIndex(hAs, i);
337	AssertLogRelMsg(paEntries[i].hDbgMod != NIL_RTDBGMOD, ("iModule=%#x\n", i));
338
339	RTDBGASMAPINFO aMappings[1] = { { 0, 0 } };
340	uint32_t cMappings = 1;
341	int rc = RTDbgAsModuleQueryMapByIndex(hAs, i, &aMappings[0], &cMappings, 0 /fFlags/);
342	if (RT_SUCCESS(rc) && cMappings == 1 && aMappings[0].iSeg == NIL_RTDBGSEGIDX)
343	paEntries[i].uOldAddr = (RTRCPTR)aMappings[0].Address;
344	else
345	AssertLogRelMsgFailed(("iModule=%#x rc=%Rrc cMappings=%#x.\n", i, rc, cMappings));
346	}
347
348	/* Unlink them. */
349	for (uint32_t i = 0; i < cModules; i++)
350	{
351	int rc = RTDbgAsModuleUnlink(hAs, paEntries[i].hDbgMod);
352	AssertLogRelMsg(RT_SUCCESS(rc), ("iModule=%#x rc=%Rrc hDbgMod=%p\n", i, rc, paEntries[i].hDbgMod));
353	}
354
355	/* Link them at the new locations. */
356	for (uint32_t i = 0; i < cModules; i++)
357	{
358	RTRCPTR uNewAddr = paEntries[i].uOldAddr + offDelta;
359	int rc = RTDbgAsModuleLink(hAs, paEntries[i].hDbgMod, uNewAddr,
360	RTDBGASLINK_FLAGS_REPLACE);
361	AssertLogRelMsg(RT_SUCCESS(rc),
362	("iModule=%#x rc=%Rrc hDbgMod=%p %RRv -> %RRv\n", i, rc, paEntries[i].hDbgMod,
363	paEntries[i].uOldAddr, uNewAddr));
364	RTDbgModRelease(paEntries[i].hDbgMod);
365	}
366
367	RTMemTmpFree(paEntries);
368	}
369	else
370	AssertLogRelMsgFailed(("No memory for %#x modules.\n", cModules));
371	}
372	else
373	AssertLogRelMsgFailed(("cModules=%#x\n", cModules));
374	RTDbgAsUnlockExcl(hAs);
375	}
376	}
377
378
379	/**
380	* Gets the IPRT debugging configuration handle (no refs retained).
381	*
382	* @returns Config handle or NIL_RTDBGCFG.
383	* @param pUVM The user mode VM handle.
384	*/
385	VMMR3DECL(RTDBGCFG) DBGFR3AsGetConfig(PUVM pUVM)
386	{
387	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGCFG);
388	return pUVM->dbgf.s.hDbgCfg;
389	}
390
391
392	/**
393	* Adds the address space to the database.
394	*
395	* @returns VBox status code.
396	* @param pUVM The user mode VM handle.
397	* @param hDbgAs The address space handle. The reference of the caller
398	* will NOT be consumed.
399	* @param ProcId The process id or NIL_RTPROCESS.
400	*/
401	VMMR3DECL(int) DBGFR3AsAdd(PUVM pUVM, RTDBGAS hDbgAs, RTPROCESS ProcId)
402	{
403	/*
404	* Input validation.
405	*/
406	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
407	const char *pszName = RTDbgAsName(hDbgAs);
408	if (!pszName)
409	return VERR_INVALID_HANDLE;
410	uint32_t cRefs = RTDbgAsRetain(hDbgAs);
411	if (cRefs == UINT32_MAX)
412	return VERR_INVALID_HANDLE;
413
414	/*
415	* Allocate a tracking node.
416	*/
417	int rc = VERR_NO_MEMORY;
418	PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_AS, sizeof(*pDbNode));
419	if (pDbNode)
420	{
421	pDbNode->HandleCore.Key = hDbgAs;
422	pDbNode->PidCore.Key = ProcId;
423	pDbNode->NameCore.pszString = pszName;
424	pDbNode->NameCore.cchString = strlen(pszName);
425	DBGF_AS_DB_LOCK_WRITE(pUVM);
426	if (RTStrSpaceInsert(&pUVM->dbgf.s.AsNameSpace, &pDbNode->NameCore))
427	{
428	if (RTAvlPVInsert(&pUVM->dbgf.s.AsHandleTree, &pDbNode->HandleCore))
429	{
430	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
431	return VINF_SUCCESS;
432	}
433
434	/* bail out */
435	RTStrSpaceRemove(&pUVM->dbgf.s.AsNameSpace, pszName);
436	}
437	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
438	MMR3HeapFree(pDbNode);
439	}
440	RTDbgAsRelease(hDbgAs);
441	return rc;
442	}
443
444
445	/**
446	* Delete an address space from the database.
447	*
448	* The address space must not be engaged as any of the standard aliases.
449	*
450	* @returns VBox status code.
451	* @retval VERR_SHARING_VIOLATION if in use as an alias.
452	* @retval VERR_NOT_FOUND if not found in the address space database.
453	*
454	* @param pUVM The user mode VM handle.
455	* @param hDbgAs The address space handle. Aliases are not allowed.
456	*/
457	VMMR3DECL(int) DBGFR3AsDelete(PUVM pUVM, RTDBGAS hDbgAs)
458	{
459	/*
460	* Input validation. Retain the address space so it can be released outside
461	* the lock as well as validated.
462	*/
463	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
464	if (hDbgAs == NIL_RTDBGAS)
465	return VINF_SUCCESS;
466	uint32_t cRefs = RTDbgAsRetain(hDbgAs);
467	if (cRefs == UINT32_MAX)
468	return VERR_INVALID_HANDLE;
469	RTDbgAsRelease(hDbgAs);
470
471	DBGF_AS_DB_LOCK_WRITE(pUVM);
472
473	/*
474	* You cannot delete any of the aliases.
475	*/
476	for (size_t i = 0; i < RT_ELEMENTS(pUVM->dbgf.s.ahAsAliases); i++)
477	if (pUVM->dbgf.s.ahAsAliases[i] == hDbgAs)
478	{
479	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
480	return VERR_SHARING_VIOLATION;
481	}
482
483	/*
484	* Ok, try remove it from the database.
485	*/
486	PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)RTAvlPVRemove(&pUVM->dbgf.s.AsHandleTree, hDbgAs);
487	if (!pDbNode)
488	{
489	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
490	return VERR_NOT_FOUND;
491	}
492	RTStrSpaceRemove(&pUVM->dbgf.s.AsNameSpace, pDbNode->NameCore.pszString);
493	if (pDbNode->PidCore.Key != NIL_RTPROCESS)
494	RTAvlU32Remove(&pUVM->dbgf.s.AsPidTree, pDbNode->PidCore.Key);
495
496	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
497
498	/*
499	* Free the resources.
500	*/
501	RTDbgAsRelease(hDbgAs);
502	MMR3HeapFree(pDbNode);
503
504	return VINF_SUCCESS;
505	}
506
507
508	/**
509	* Changes an alias to point to a new address space.
510	*
511	* Not all the aliases can be changed, currently it's only DBGF_AS_GLOBAL
512	* and DBGF_AS_KERNEL.
513	*
514	* @returns VBox status code.
515	* @param pUVM The user mode VM handle.
516	* @param hAlias The alias to change.
517	* @param hAliasFor The address space hAlias should be an alias for. This
518	* can be an alias. The caller's reference to this address
519	* space will NOT be consumed.
520	*/
521	VMMR3DECL(int) DBGFR3AsSetAlias(PUVM pUVM, RTDBGAS hAlias, RTDBGAS hAliasFor)
522	{
523	/*
524	* Input validation.
525	*/
526	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
527	AssertMsgReturn(DBGF_AS_IS_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
528	AssertMsgReturn(!DBGF_AS_IS_FIXED_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
529	RTDBGAS hRealAliasFor = DBGFR3AsResolveAndRetain(pUVM, hAliasFor);
530	if (hRealAliasFor == NIL_RTDBGAS)
531	return VERR_INVALID_HANDLE;
532
533	/*
534	* Make sure the handle has is already in the database.
535	*/
536	int rc = VERR_NOT_FOUND;
537	DBGF_AS_DB_LOCK_WRITE(pUVM);
538	if (RTAvlPVGet(&pUVM->dbgf.s.AsHandleTree, hRealAliasFor))
539	{
540	/*
541	* Update the alias table and release the current address space.
542	*/
543	RTDBGAS hAsOld;
544	ASMAtomicXchgHandle(&pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(hAlias)], hRealAliasFor, &hAsOld);
545	uint32_t cRefs = RTDbgAsRelease(hAsOld);
546	Assert(cRefs > 0); Assert(cRefs != UINT32_MAX); NOREF(cRefs);
547	rc = VINF_SUCCESS;
548	}
549	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
550
551	return rc;
552	}
553
554
555	/**
556	* @callback_method_impl{FNPDMR3ENUM}
557	*/
558	static DECLCALLBACK(int) dbgfR3AsLazyPopulateR0Callback(PVM pVM, const char pszFilename, const char pszName,
559	RTUINTPTR ImageBase, size_t cbImage, PDMLDRCTX enmCtx, void *pvArg)
560	{
561	NOREF(pVM); NOREF(cbImage);
562
563	/* Only ring-0 modules. */
564	if (enmCtx == PDMLDRCTX_RING_0)
565	{
566	RTDBGMOD hDbgMod;
567	int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszName, RTLDRARCH_HOST, pVM->pUVM->dbgf.s.hDbgCfg);
568	if (RT_SUCCESS(rc))
569	{
570	rc = RTDbgAsModuleLink((RTDBGAS)pvArg, hDbgMod, ImageBase, 0 /fFlags/);
571	if (RT_FAILURE(rc))
572	LogRel(("DBGF: Failed to link module \"%s\" into DBGF_AS_R0 at %RTptr: %Rrc\n",
573	pszName, ImageBase, rc));
574	}
575	else
576	LogRel(("DBGF: RTDbgModCreateFromImage failed with rc=%Rrc for module \"%s\" (%s)\n",
577	rc, pszName, pszFilename));
578	}
579	return VINF_SUCCESS;
580	}
581
582
583	/**
584	* @callback_method_impl{FNPDMR3ENUM}
585	*/
586	static DECLCALLBACK(int) dbgfR3AsLazyPopulateRCCallback(PVM pVM, const char pszFilename, const char pszName,
587	RTUINTPTR ImageBase, size_t cbImage, PDMLDRCTX enmCtx, void *pvArg)
588	{
589	NOREF(pVM); NOREF(cbImage);
590
591	/* Only raw-mode modules. */
592	if (enmCtx == PDMLDRCTX_RAW_MODE)
593	{
594	RTDBGMOD hDbgMod;
595	int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszName, RTLDRARCH_X86_32, pVM->pUVM->dbgf.s.hDbgCfg);
596	if (RT_SUCCESS(rc))
597	{
598	rc = RTDbgAsModuleLink((RTDBGAS)pvArg, hDbgMod, ImageBase, 0 /fFlags/);
599	if (RT_FAILURE(rc))
600	LogRel(("DBGF: Failed to link module \"%s\" into DBGF_AS_RC at %RTptr: %Rrc\n",
601	pszName, ImageBase, rc));
602	}
603	else
604	LogRel(("DBGF: RTDbgModCreateFromImage failed with rc=%Rrc for module \"%s\" (%s)\n",
605	rc, pszName, pszFilename));
606	}
607	return VINF_SUCCESS;
608	}
609
610
611	/**
612	* Lazily populates the specified address space.
613	*
614	* @param pUVM The user mode VM handle.
615	* @param hAlias The alias.
616	*/
617	static void dbgfR3AsLazyPopulate(PUVM pUVM, RTDBGAS hAlias)
618	{
619	DBGF_AS_DB_LOCK_WRITE(pUVM);
620	uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
621	if (!pUVM->dbgf.s.afAsAliasPopuplated[iAlias])
622	{
623	RTDBGAS hDbgAs = pUVM->dbgf.s.ahAsAliases[iAlias];
624	if (hAlias == DBGF_AS_R0 && pUVM->pVM)
625	PDMR3LdrEnumModules(pUVM->pVM, dbgfR3AsLazyPopulateR0Callback, hDbgAs);
626	else if (hAlias == DBGF_AS_RC && pUVM->pVM && !HMIsEnabled(pUVM->pVM))
627	{
628	LogRel(("DBGF: Lazy init of RC address space\n"));
629	PDMR3LdrEnumModules(pUVM->pVM, dbgfR3AsLazyPopulateRCCallback, hDbgAs);
630	#ifdef VBOX_WITH_RAW_MODE
631	PATMR3DbgPopulateAddrSpace(pUVM->pVM, hDbgAs);
632	#endif
633	}
634	else if (hAlias == DBGF_AS_PHYS && pUVM->pVM)
635	{
636	/** @todo Lazy load pc and vga bios symbols or the EFI stuff. */
637	}
638
639	pUVM->dbgf.s.afAsAliasPopuplated[iAlias] = true;
640	}
641	DBGF_AS_DB_UNLOCK_WRITE(pUVM);
642	}
643
644
645	/**
646	* Resolves the address space handle into a real handle if it's an alias.
647	*
648	* @returns Real address space handle. NIL_RTDBGAS if invalid handle.
649	*
650	* @param pUVM The user mode VM handle.
651	* @param hAlias The possibly address space alias.
652	*
653	* @remarks Doesn't take any locks.
654	*/
655	VMMR3DECL(RTDBGAS) DBGFR3AsResolve(PUVM pUVM, RTDBGAS hAlias)
656	{
657	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
658	AssertCompileNS(NIL_RTDBGAS == (RTDBGAS)0);
659
660	uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
661	if (iAlias < DBGF_AS_COUNT)
662	ASMAtomicReadHandle(&pUVM->dbgf.s.ahAsAliases[iAlias], &hAlias);
663	return hAlias;
664	}
665
666
667	/**
668	* Resolves the address space handle into a real handle if it's an alias,
669	* and retains whatever it is.
670	*
671	* @returns Real address space handle. NIL_RTDBGAS if invalid handle.
672	*
673	* @param pUVM The user mode VM handle.
674	* @param hAlias The possibly address space alias.
675	*/
676	VMMR3DECL(RTDBGAS) DBGFR3AsResolveAndRetain(PUVM pUVM, RTDBGAS hAlias)
677	{
678	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
679	AssertCompileNS(NIL_RTDBGAS == (RTDBGAS)0);
680
681	uint32_t cRefs;
682	uintptr_t iAlias = DBGF_AS_ALIAS_2_INDEX(hAlias);
683	if (iAlias < DBGF_AS_COUNT)
684	{
685	if (DBGF_AS_IS_FIXED_ALIAS(hAlias))
686	{
687	/* Perform lazy address space population. */
688	if (!pUVM->dbgf.s.afAsAliasPopuplated[iAlias])
689	dbgfR3AsLazyPopulate(pUVM, hAlias);
690
691	/* Won't ever change, no need to grab the lock. */
692	hAlias = pUVM->dbgf.s.ahAsAliases[iAlias];
693	cRefs = RTDbgAsRetain(hAlias);
694	}
695	else
696	{
697	/* May change, grab the lock so we can read it safely. */
698	DBGF_AS_DB_LOCK_READ(pUVM);
699	hAlias = pUVM->dbgf.s.ahAsAliases[iAlias];
700	cRefs = RTDbgAsRetain(hAlias);
701	DBGF_AS_DB_UNLOCK_READ(pUVM);
702	}
703	}
704	else
705	/* Not an alias, just retain it. */
706	cRefs = RTDbgAsRetain(hAlias);
707
708	return cRefs != UINT32_MAX ? hAlias : NIL_RTDBGAS;
709	}
710
711
712	/**
713	* Query an address space by name.
714	*
715	* @returns Retained address space handle if found, NIL_RTDBGAS if not.
716	*
717	* @param pUVM The user mode VM handle.
718	* @param pszName The name.
719	*/
720	VMMR3DECL(RTDBGAS) DBGFR3AsQueryByName(PUVM pUVM, const char *pszName)
721	{
722	/*
723	* Validate the input.
724	*/
725	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGAS);
726	AssertPtrReturn(pszName, NIL_RTDBGAS);
727	AssertReturn(*pszName, NIL_RTDBGAS);
728
729	/*
730	* Look it up in the string space and retain the result.
731	*/
732	RTDBGAS hDbgAs = NIL_RTDBGAS;
733	DBGF_AS_DB_LOCK_READ(pUVM);
734
735	PRTSTRSPACECORE pNode = RTStrSpaceGet(&pUVM->dbgf.s.AsNameSpace, pszName);
736	if (pNode)
737	{
738	PDBGFASDBNODE pDbNode = RT_FROM_MEMBER(pNode, DBGFASDBNODE, NameCore);
739	hDbgAs = (RTDBGAS)pDbNode->HandleCore.Key;
740	uint32_t cRefs = RTDbgAsRetain(hDbgAs);
741	if (RT_UNLIKELY(cRefs == UINT32_MAX))
742	hDbgAs = NIL_RTDBGAS;
743	}
744
745	DBGF_AS_DB_UNLOCK_READ(pUVM);
746	return hDbgAs;
747	}
748
749
750	/**
751	* Query an address space by process ID.
752	*
753	* @returns Retained address space handle if found, NIL_RTDBGAS if not.
754	*
755	* @param pUVM The user mode VM handle.
756	* @param ProcId The process ID.
757	*/
758	VMMR3DECL(RTDBGAS) DBGFR3AsQueryByPid(PUVM pUVM, RTPROCESS ProcId)
759	{
760	/*
761	* Validate the input.
762	*/
763	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NIL_RTDBGAS);
764	AssertReturn(ProcId != NIL_RTPROCESS, NIL_RTDBGAS);
765
766	/*
767	* Look it up in the PID tree and retain the result.
768	*/
769	RTDBGAS hDbgAs = NIL_RTDBGAS;
770	DBGF_AS_DB_LOCK_READ(pUVM);
771
772	PAVLU32NODECORE pNode = RTAvlU32Get(&pUVM->dbgf.s.AsPidTree, ProcId);
773	if (pNode)
774	{
775	PDBGFASDBNODE pDbNode = RT_FROM_MEMBER(pNode, DBGFASDBNODE, PidCore);
776	hDbgAs = (RTDBGAS)pDbNode->HandleCore.Key;
777	uint32_t cRefs = RTDbgAsRetain(hDbgAs);
778	if (RT_UNLIKELY(cRefs == UINT32_MAX))
779	hDbgAs = NIL_RTDBGAS;
780	}
781	DBGF_AS_DB_UNLOCK_READ(pUVM);
782
783	return hDbgAs;
784	}
785
786
787	/**
788	* Searches for the file in the path.
789	*
790	* The file is first tested without any path modification, then we walk the path
791	* looking in each directory.
792	*
793	* @returns VBox status code.
794	* @param pszFilename The file to search for.
795	* @param pszPath The search path.
796	* @param pfnOpen The open callback function.
797	* @param pvUser User argument for the callback.
798	*/
799	static int dbgfR3AsSearchPath(const char pszFilename, const char pszPath, PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
800	{
801	char szFound[RTPATH_MAX];
802
803	/* Check the filename length. */
804	size_t const cchFilename = strlen(pszFilename);
805	if (cchFilename >= sizeof(szFound))
806	return VERR_FILENAME_TOO_LONG;
807	const char *pszName = RTPathFilename(pszFilename);
808	if (!pszName)
809	return VERR_IS_A_DIRECTORY;
810	size_t const cchName = strlen(pszName);
811
812	/*
813	* Try default location first.
814	*/
815	memcpy(szFound, pszFilename, cchFilename + 1);
816	int rc = pfnOpen(szFound, pvUser);
817	if (RT_SUCCESS(rc))
818	return rc;
819
820	/*
821	* Walk the search path.
822	*/
823	const char *psz = pszPath;
824	while (*psz)
825	{
826	/* Skip leading blanks - no directories with leading spaces, thank you. */
827	while (RT_C_IS_BLANK(*psz))
828	psz++;
829
830	/* Find the end of this element. */
831	const char *pszNext;
832	const char *pszEnd = strchr(psz, ';');
833	if (!pszEnd)
834	pszEnd = pszNext = strchr(psz, '\0');
835	else
836	pszNext = pszEnd + 1;
837	if (pszEnd != psz)
838	{
839	size_t const cch = pszEnd - psz;
840	if (cch + 1 + cchName < sizeof(szFound))
841	{
842	/** @todo RTPathCompose, RTPathComposeN(). This code isn't right
843	* for 'E:' on DOS systems. It may also create unwanted double slashes. */
844	memcpy(szFound, psz, cch);
845	szFound[cch] = '/';
846	memcpy(szFound + cch + 1, pszName, cchName + 1);
847	int rc2 = pfnOpen(szFound, pvUser);
848	if (RT_SUCCESS(rc2))
849	return rc2;
850	if ( rc2 != rc
851	&& ( rc == VERR_FILE_NOT_FOUND
852	\|\| rc == VERR_OPEN_FAILED))
853	rc = rc2;
854	}
855	}
856
857	/* advance */
858	psz = pszNext;
859	}
860
861	/*
862	* Walk the path once again, this time do a depth search.
863	*/
864	/** @todo do a depth search using the specified path. */
865
866	/* failed */
867	return rc;
868	}
869
870
871	/**
872	* Same as dbgfR3AsSearchEnv, except that the path is taken from the environment.
873	*
874	* If the environment variable doesn't exist, the current directory is searched
875	* instead.
876	*
877	* @returns VBox status code.
878	* @param pszFilename The filename.
879	* @param pszEnvVar The environment variable name.
880	* @param pfnOpen The open callback function.
881	* @param pvUser User argument for the callback.
882	*/
883	static int dbgfR3AsSearchEnvPath(const char pszFilename, const char pszEnvVar, PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
884	{
885	int rc;
886	char *pszPath = RTEnvDupEx(RTENV_DEFAULT, pszEnvVar);
887	if (pszPath)
888	{
889	rc = dbgfR3AsSearchPath(pszFilename, pszPath, pfnOpen, pvUser);
890	RTStrFree(pszPath);
891	}
892	else
893	rc = dbgfR3AsSearchPath(pszFilename, ".", pfnOpen, pvUser);
894	return rc;
895	}
896
897
898	/**
899	* Same as dbgfR3AsSearchEnv, except that the path is taken from the DBGF config
900	* (CFGM).
901	*
902	* Nothing is done if the CFGM variable isn't set.
903	*
904	* @returns VBox status code.
905	* @param pUVM The user mode VM handle.
906	* @param pszFilename The filename.
907	* @param pszCfgValue The name of the config variable (under /DBGF/).
908	* @param pfnOpen The open callback function.
909	* @param pvUser User argument for the callback.
910	*/
911	static int dbgfR3AsSearchCfgPath(PUVM pUVM, const char pszFilename, const char pszCfgValue,
912	PFNDBGFR3ASSEARCHOPEN pfnOpen, void *pvUser)
913	{
914	char *pszPath;
915	int rc = CFGMR3QueryStringAllocDef(CFGMR3GetChild(CFGMR3GetRootU(pUVM), "/DBGF"), pszCfgValue, &pszPath, NULL);
916	if (RT_FAILURE(rc))
917	return rc;
918	if (!pszPath)
919	return VERR_FILE_NOT_FOUND;
920	rc = dbgfR3AsSearchPath(pszFilename, pszPath, pfnOpen, pvUser);
921	MMR3HeapFree(pszPath);
922	return rc;
923	}
924
925
926	/**
927	* Load symbols from an executable module into the specified address space.
928	*
929	* If an module exist at the specified address it will be replaced by this
930	* call, otherwise a new module is created.
931	*
932	* @returns VBox status code.
933	*
934	* @param pUVM The user mode VM handle.
935	* @param hDbgAs The address space.
936	* @param pszFilename The filename of the executable module.
937	* @param pszModName The module name. If NULL, then then the file name
938	* base is used (no extension or nothing).
939	* @param pModAddress The load address of the module.
940	* @param iModSeg The segment to load, pass NIL_RTDBGSEGIDX to load
941	* the whole image.
942	* @param fFlags Flags reserved for future extensions, must be 0.
943	*/
944	VMMR3DECL(int) DBGFR3AsLoadImage(PUVM pUVM, RTDBGAS hDbgAs, const char pszFilename, const char pszModName, PCDBGFADDRESS pModAddress, RTDBGSEGIDX iModSeg, uint32_t fFlags)
945	{
946	/*
947	* Validate input
948	*/
949	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
950	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
951	AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
952	AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
953	AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER);
954	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
955	if (hRealAS == NIL_RTDBGAS)
956	return VERR_INVALID_HANDLE;
957
958	RTDBGMOD hDbgMod;
959	int rc = RTDbgModCreateFromImage(&hDbgMod, pszFilename, pszModName, RTLDRARCH_WHATEVER, pUVM->dbgf.s.hDbgCfg);
960	if (RT_SUCCESS(rc))
961	{
962	rc = DBGFR3AsLinkModule(pUVM, hRealAS, hDbgMod, pModAddress, iModSeg, 0);
963	if (RT_FAILURE(rc))
964	RTDbgModRelease(hDbgMod);
965	}
966
967	RTDbgAsRelease(hRealAS);
968	return rc;
969	}
970
971
972	/**
973	* Load symbols from a map file into a module at the specified address space.
974	*
975	* If an module exist at the specified address it will be replaced by this
976	* call, otherwise a new module is created.
977	*
978	* @returns VBox status code.
979	*
980	* @param pUVM The user mode VM handle.
981	* @param hDbgAs The address space.
982	* @param pszFilename The map file.
983	* @param pszModName The module name. If NULL, then then the file name
984	* base is used (no extension or nothing).
985	* @param pModAddress The load address of the module.
986	* @param iModSeg The segment to load, pass NIL_RTDBGSEGIDX to load
987	* the whole image.
988	* @param uSubtrahend Value to to subtract from the symbols in the map
989	* file. This is useful for the linux System.map and
990	* /proc/kallsyms.
991	* @param fFlags Flags reserved for future extensions, must be 0.
992	*/
993	VMMR3DECL(int) DBGFR3AsLoadMap(PUVM pUVM, RTDBGAS hDbgAs, const char pszFilename, const char pszModName,
994	PCDBGFADDRESS pModAddress, RTDBGSEGIDX iModSeg, RTGCUINTPTR uSubtrahend, uint32_t fFlags)
995	{
996	/*
997	* Validate input
998	*/
999	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1000	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1001	AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
1002	AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
1003	AssertReturn(fFlags == 0, VERR_INVALID_PARAMETER);
1004	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
1005	if (hRealAS == NIL_RTDBGAS)
1006	return VERR_INVALID_HANDLE;
1007
1008	RTDBGMOD hDbgMod;
1009	int rc = RTDbgModCreateFromMap(&hDbgMod, pszFilename, pszModName, uSubtrahend, pUVM->dbgf.s.hDbgCfg);
1010	if (RT_SUCCESS(rc))
1011	{
1012	rc = DBGFR3AsLinkModule(pUVM, hRealAS, hDbgMod, pModAddress, iModSeg, 0);
1013	if (RT_FAILURE(rc))
1014	RTDbgModRelease(hDbgMod);
1015	}
1016
1017	RTDbgAsRelease(hRealAS);
1018	return rc;
1019	}
1020
1021
1022	/**
1023	* Wrapper around RTDbgAsModuleLink, RTDbgAsModuleLinkSeg and DBGFR3AsResolve.
1024	*
1025	* @returns VBox status code.
1026	* @param pUVM The user mode VM handle.
1027	* @param hDbgAs The address space handle.
1028	* @param hMod The module handle.
1029	* @param pModAddress The link address.
1030	* @param iModSeg The segment to link, NIL_RTDBGSEGIDX for the entire image.
1031	* @param fFlags Flags to pass to the link functions, see RTDBGASLINK_FLAGS_*.
1032	*/
1033	VMMR3DECL(int) DBGFR3AsLinkModule(PUVM pUVM, RTDBGAS hDbgAs, RTDBGMOD hMod, PCDBGFADDRESS pModAddress,
1034	RTDBGSEGIDX iModSeg, uint32_t fFlags)
1035	{
1036	/*
1037	* Input validation.
1038	*/
1039	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1040	AssertReturn(DBGFR3AddrIsValid(pUVM, pModAddress), VERR_INVALID_PARAMETER);
1041	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
1042	if (hRealAS == NIL_RTDBGAS)
1043	return VERR_INVALID_HANDLE;
1044
1045	/*
1046	* Do the job.
1047	*/
1048	int rc;
1049	if (iModSeg == NIL_RTDBGSEGIDX)
1050	rc = RTDbgAsModuleLink(hRealAS, hMod, pModAddress->FlatPtr, fFlags);
1051	else
1052	rc = RTDbgAsModuleLinkSeg(hRealAS, hMod, iModSeg, pModAddress->FlatPtr, fFlags);
1053
1054	RTDbgAsRelease(hRealAS);
1055	return rc;
1056	}
1057
1058
1059	/**
1060	* Adds the module name to the symbol name.
1061	*
1062	* @param pSymbol The symbol info (in/out).
1063	* @param hMod The module handle.
1064	*/
1065	static void dbgfR3AsSymbolJoinNames(PRTDBGSYMBOL pSymbol, RTDBGMOD hMod)
1066	{
1067	/* Figure the lengths, adjust them if the result is too long. */
1068	const char *pszModName = RTDbgModName(hMod);
1069	size_t cchModName = strlen(pszModName);
1070	size_t cchSymbol = strlen(pSymbol->szName);
1071	if (cchModName + 1 + cchSymbol >= sizeof(pSymbol->szName))
1072	{
1073	if (cchModName >= sizeof(pSymbol->szName) / 4)
1074	cchModName = sizeof(pSymbol->szName) / 4;
1075	if (cchModName + 1 + cchSymbol >= sizeof(pSymbol->szName))
1076	cchSymbol = sizeof(pSymbol->szName) - cchModName - 2;
1077	Assert(cchModName + 1 + cchSymbol < sizeof(pSymbol->szName));
1078	}
1079
1080	/* Do the moving and copying. */
1081	memmove(&pSymbol->szName[cchModName + 1], &pSymbol->szName[0], cchSymbol + 1);
1082	memcpy(&pSymbol->szName[0], pszModName, cchModName);
1083	pSymbol->szName[cchModName] = '!';
1084	}
1085
1086
1087	/** Temporary symbol conversion function. */
1088	static void dbgfR3AsSymbolConvert(PRTDBGSYMBOL pSymbol, PCDBGFSYMBOL pDbgfSym)
1089	{
1090	pSymbol->offSeg = pSymbol->Value = pDbgfSym->Value;
1091	pSymbol->cb = pDbgfSym->cb;
1092	pSymbol->iSeg = 0;
1093	pSymbol->fFlags = 0;
1094	pSymbol->iOrdinal = UINT32_MAX;
1095	strcpy(pSymbol->szName, pDbgfSym->szName);
1096	}
1097
1098
1099	/**
1100	* Query a symbol by address.
1101	*
1102	* The returned symbol is the one we consider closes to the specified address.
1103	*
1104	* @returns VBox status code. See RTDbgAsSymbolByAddr.
1105	*
1106	* @param pUVM The user mode VM handle.
1107	* @param hDbgAs The address space handle.
1108	* @param pAddress The address to lookup.
1109	* @param fFlags One of the RTDBGSYMADDR_FLAGS_XXX flags.
1110	* @param poffDisp Where to return the distance between the returned
1111	* symbol and pAddress. Optional.
1112	* @param pSymbol Where to return the symbol information. The returned
1113	* symbol name will be prefixed by the module name as
1114	* far as space allows.
1115	* @param phMod Where to return the module handle. Optional.
1116	*/
1117	VMMR3DECL(int) DBGFR3AsSymbolByAddr(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress, uint32_t fFlags,
1118	PRTGCINTPTR poffDisp, PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod)
1119	{
1120	/*
1121	* Implement the special address space aliases the lazy way.
1122	*/
1123	if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
1124	{
1125	int rc = DBGFR3AsSymbolByAddr(pUVM, DBGF_AS_RC, pAddress, fFlags, poffDisp, pSymbol, phMod);
1126	if (RT_FAILURE(rc))
1127	rc = DBGFR3AsSymbolByAddr(pUVM, DBGF_AS_GLOBAL, pAddress, fFlags, poffDisp, pSymbol, phMod);
1128	return rc;
1129	}
1130
1131	/*
1132	* Input validation.
1133	*/
1134	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1135	AssertReturn(DBGFR3AddrIsValid(pUVM, pAddress), VERR_INVALID_PARAMETER);
1136	AssertPtrNullReturn(poffDisp, VERR_INVALID_POINTER);
1137	AssertPtrReturn(pSymbol, VERR_INVALID_POINTER);
1138	AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
1139	if (poffDisp)
1140	*poffDisp = 0;
1141	if (phMod)
1142	*phMod = NIL_RTDBGMOD;
1143	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
1144	if (hRealAS == NIL_RTDBGAS)
1145	return VERR_INVALID_HANDLE;
1146
1147	/*
1148	* Do the lookup.
1149	*/
1150	RTDBGMOD hMod;
1151	int rc = RTDbgAsSymbolByAddr(hRealAS, pAddress->FlatPtr, fFlags, poffDisp, pSymbol, &hMod);
1152	if (RT_SUCCESS(rc))
1153	{
1154	dbgfR3AsSymbolJoinNames(pSymbol, hMod);
1155	if (!phMod)
1156	RTDbgModRelease(hMod);
1157	}
1158
1159	return rc;
1160	}
1161
1162
1163	/**
1164	* Convenience function that combines RTDbgSymbolDup and DBGFR3AsSymbolByAddr.
1165	*
1166	* @returns Pointer to the symbol on success. This must be free using
1167	* RTDbgSymbolFree(). NULL is returned if not found or any error
1168	* occurs.
1169	*
1170	* @param pUVM The user mode VM handle.
1171	* @param hDbgAs See DBGFR3AsSymbolByAddr.
1172	* @param pAddress See DBGFR3AsSymbolByAddr.
1173	* @param fFlags See DBGFR3AsSymbolByAddr.
1174	* @param poffDisp See DBGFR3AsSymbolByAddr.
1175	* @param phMod See DBGFR3AsSymbolByAddr.
1176	*/
1177	VMMR3DECL(PRTDBGSYMBOL) DBGFR3AsSymbolByAddrA(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress, uint32_t fFlags,
1178	PRTGCINTPTR poffDisp, PRTDBGMOD phMod)
1179	{
1180	RTDBGSYMBOL SymInfo;
1181	int rc = DBGFR3AsSymbolByAddr(pUVM, hDbgAs, pAddress, fFlags, poffDisp, &SymInfo, phMod);
1182	if (RT_SUCCESS(rc))
1183	return RTDbgSymbolDup(&SymInfo);
1184	return NULL;
1185	}
1186
1187
1188	/**
1189	* Query a symbol by name.
1190	*
1191	* The symbol can be prefixed by a module name pattern to scope the search. The
1192	* pattern is a simple string pattern with '*' and '?' as wild chars. See
1193	* RTStrSimplePatternMatch().
1194	*
1195	* @returns VBox status code. See RTDbgAsSymbolByAddr.
1196	*
1197	* @param pUVM The user mode VM handle.
1198	* @param hDbgAs The address space handle.
1199	* @param pszSymbol The symbol to search for, maybe prefixed by a
1200	* module pattern.
1201	* @param pSymbol Where to return the symbol information.
1202	* The returned symbol name will be prefixed by
1203	* the module name as far as space allows.
1204	* @param phMod Where to return the module handle. Optional.
1205	*/
1206	VMMR3DECL(int) DBGFR3AsSymbolByName(PUVM pUVM, RTDBGAS hDbgAs, const char *pszSymbol,
1207	PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod)
1208	{
1209	/*
1210	* Implement the special address space aliases the lazy way.
1211	*/
1212	if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
1213	{
1214	int rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_RC, pszSymbol, pSymbol, phMod);
1215	if (RT_FAILURE(rc))
1216	rc = DBGFR3AsSymbolByName(pUVM, DBGF_AS_GLOBAL, pszSymbol, pSymbol, phMod);
1217	return rc;
1218	}
1219
1220	/*
1221	* Input validation.
1222	*/
1223	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1224	AssertPtrReturn(pSymbol, VERR_INVALID_POINTER);
1225	AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
1226	if (phMod)
1227	*phMod = NIL_RTDBGMOD;
1228	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
1229	if (hRealAS == NIL_RTDBGAS)
1230	return VERR_INVALID_HANDLE;
1231
1232
1233	/*
1234	* Do the lookup.
1235	*/
1236	RTDBGMOD hMod;
1237	int rc = RTDbgAsSymbolByName(hRealAS, pszSymbol, pSymbol, &hMod);
1238	if (RT_SUCCESS(rc))
1239	{
1240	dbgfR3AsSymbolJoinNames(pSymbol, hMod);
1241	if (!phMod)
1242	RTDbgModRelease(hMod);
1243	}
1244
1245	return rc;
1246	}
1247
1248
1249	VMMR3DECL(int) DBGFR3AsLineByAddr(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress,
1250	PRTGCINTPTR poffDisp, PRTDBGLINE pLine, PRTDBGMOD phMod)
1251	{
1252	/*
1253	* Implement the special address space aliases the lazy way.
1254	*/
1255	if (hDbgAs == DBGF_AS_RC_AND_GC_GLOBAL)
1256	{
1257	int rc = DBGFR3AsLineByAddr(pUVM, DBGF_AS_RC, pAddress, poffDisp, pLine, phMod);
1258	if (RT_FAILURE(rc))
1259	rc = DBGFR3AsLineByAddr(pUVM, DBGF_AS_GLOBAL, pAddress, poffDisp, pLine, phMod);
1260	return rc;
1261	}
1262
1263	/*
1264	* Input validation.
1265	*/
1266	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1267	AssertReturn(DBGFR3AddrIsValid(pUVM, pAddress), VERR_INVALID_PARAMETER);
1268	AssertPtrNullReturn(poffDisp, VERR_INVALID_POINTER);
1269	AssertPtrReturn(pLine, VERR_INVALID_POINTER);
1270	AssertPtrNullReturn(phMod, VERR_INVALID_POINTER);
1271	if (poffDisp)
1272	*poffDisp = 0;
1273	if (phMod)
1274	*phMod = NIL_RTDBGMOD;
1275	RTDBGAS hRealAS = DBGFR3AsResolveAndRetain(pUVM, hDbgAs);
1276	if (hRealAS == NIL_RTDBGAS)
1277	return VERR_INVALID_HANDLE;
1278
1279	/*
1280	* Do the lookup.
1281	*/
1282	return RTDbgAsLineByAddr(hRealAS, pAddress->FlatPtr, poffDisp, pLine, phMod);
1283	}
1284
1285
1286	VMMR3DECL(PRTDBGLINE) DBGFR3AsLineByAddrA(PUVM pUVM, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress,
1287	PRTGCINTPTR poffDisp, PRTDBGMOD phMod)
1288	{
1289	RTDBGLINE Line;
1290	int rc = DBGFR3AsLineByAddr(pUVM, hDbgAs, pAddress, poffDisp, &Line, phMod);
1291	if (RT_SUCCESS(rc))
1292	return RTDbgLineDup(&Line);
1293	return NULL;
1294	}
1295

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source: vbox/trunk/src/VBox/VMM/VMMR3/DBGFAddrSpace.cpp@ 47682

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