ldrkLdr.cpp@ 5005

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1	/* $Id: ldrkLdr.cpp 4750 2007-09-13 07:05:03Z vboxsync $ */
2	/** @file
3	* innotek Portable Runtime - Binary Image Loader, kLdr Interface.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP RTLOGGROUP_LDR
23	#include <iprt/ldr.h>
24	#include <iprt/file.h>
25	#include <iprt/alloc.h>
26	#include <iprt/assert.h>
27	#include <iprt/string.h>
28	#include <iprt/path.h>
29	#include <iprt/log.h>
30	#include <iprt/param.h>
31	#include <iprt/err.h>
32	#include "internal/ldr.h"
33	#define KLDR_ALREADY_INCLUDE_STD_TYPES
34	#define KLDR_NO_KLDR_H_INCLUDES
35	#include <kLdr.h>
36	#include "kLdrHlp.h"
37
38
39	/*******************************************************************************
40	* Structures and Typedefs *
41	*******************************************************************************/
42	/**
43	* kLdr file provider.
44	*/
45	typedef struct RTKLDRRDR
46	{
47	/** The core. */
48	KLDRRDR Core;
49	/** The IPRT bit reader. */
50	PRTLDRREADER pReader;
51	} RTKLDRRDR, *PRTKLDRRDR;
52
53	/**
54	* IPRT module.
55	*/
56	typedef struct RTLDRMODKLDR
57	{
58	/** The Core module structure. */
59	RTLDRMODINTERNAL Core;
60	/** The kLdr module. */
61	PKLDRMOD pMod;
62	} RTLDRMODKLDR, *PRTLDRMODKLDR;
63
64
65	/**
66	* Arguments for a RTLDRMODKLDR callback wrapper.
67	*/
68	typedef struct RTLDRMODKLDRARGS
69	{
70	union
71	{
72	PFNRT pfn;
73	PFNRTLDRENUMSYMS pfnEnumSyms;
74	PFNRTLDRIMPORT pfnGetImport;
75	} u;
76	void *pvUser;
77	const void *pvBits;
78	PRTLDRMODKLDR pMod;
79	} RTLDRMODKLDRARGS, *PRTLDRMODKLDRARGS;
80
81
82	/*******************************************************************************
83	* Internal Functions *
84	*******************************************************************************/
85	static int rtkldrConvertError(int krc);
86	static int rtkldrConvertErrorFromIPRT(int rc);
87
88
89	static int rtkldrRdrCreate( PPKLDRRDR ppRdr, const char *pszFilename);
90	static int rtkldrRdrDestroy( PKLDRRDR pRdr);
91	static int rtkldrRdrRead( PKLDRRDR pRdr, void *pvBuf, size_t cb, KLDRFOFF off);
92	static int rtkldrRdrAllMap( PKLDRRDR pRdr, const void **ppvBits);
93	static int rtkldrRdrAllUnmap(PKLDRRDR pRdr, const void *pvBits);
94	static KLDRFOFF rtkldrRdrSize( PKLDRRDR pRdr);
95	static KLDRFOFF rtkldrRdrTell( PKLDRRDR pRdr);
96	static const char * rtkldrRdrName(PKLDRRDR pRdr);
97	static size_t rtkldrRdrPageSize(PKLDRRDR pRdr);
98	static int rtkldrRdrMap( PKLDRRDR pRdr, void **ppvBase, uint32_t cSegments, PCKLDRSEG paSegments, unsigned fFixed);
99	static int rtkldrRdrRefresh( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments);
100	static int rtkldrRdrProtect( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments, unsigned fUnprotectOrProtect);
101	static int rtkldrRdrUnmap( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments);
102	static void rtkldrRdrDone( PKLDRRDR pRdr);
103
104
105	static DECLCALLBACK(int) rtkldrClose(PRTLDRMODINTERNAL pMod);
106	static DECLCALLBACK(int) rtkldrDone(PRTLDRMODINTERNAL pMod);
107	static DECLCALLBACK(int) rtkldrEnumSymbols(PRTLDRMODINTERNAL pMod, unsigned fFlags, const void *pvBits,
108	RTUINTPTR BaseAddress,PFNRTLDRENUMSYMS pfnCallback, void *pvUser);
109	static int rtkldrEnumSymbolsWrapper(PKLDRMOD pMod, uint32_t iSymbol,
110	const char pchSymbol, size_t cchSymbol, const char pszVersion,
111	KLDRADDR uValue, uint32_t fKind, void *pvUser);
112	static DECLCALLBACK(size_t) rtkldrGetImageSize(PRTLDRMODINTERNAL pMod);
113	static DECLCALLBACK(int) rtkldrGetBits(PRTLDRMODINTERNAL pMod, void *pvBits, RTUINTPTR BaseAddress,
114	PFNRTLDRIMPORT pfnGetImport, void *pvUser);
115	static DECLCALLBACK(int) rtkldrRelocate(PRTLDRMODINTERNAL pMod, void *pvBits, RTUINTPTR NewBaseAddress,
116	RTUINTPTR OldBaseAddress, PFNRTLDRIMPORT pfnGetImport, void *pvUser);
117	static int rtkldrGetImportWrapper(PKLDRMOD pMod, uint32_t iImport, uint32_t iSymbol, const char *pchSymbol, size_t cchSymbol,
118	const char pszVersion, PKLDRADDR puValue, uint32_t pfKind, void *pvUser);
119
120	static DECLCALLBACK(int) rtkldrGetSymbolEx(PRTLDRMODINTERNAL pMod, const void *pvBits, RTUINTPTR BaseAddress,
121	const char pszSymbol, RTUINTPTR pValue);
122
123
124
125	/**
126	* Converts a kLdr error code to an IPRT one.
127	*/
128	static int rtkldrConvertError(int krc)
129	{
130	if (!krc)
131	return VINF_SUCCESS;
132	switch (krc)
133	{
134	case KLDR_ERR_INVALID_PARAMETER: return VERR_INVALID_PARAMETER;
135	case KLDR_ERR_INVALID_HANDLE: return VERR_INVALID_HANDLE;
136	case KLDR_ERR_NO_MEMORY: return VERR_NO_MEMORY;
137
138
139	case KLDR_ERR_UNKNOWN_FORMAT:
140	case KLDR_ERR_MZ_NOT_SUPPORTED: return VERR_MZ_EXE_NOT_SUPPORTED;
141	case KLDR_ERR_NE_NOT_SUPPORTED: return VERR_NE_EXE_NOT_SUPPORTED;
142	case KLDR_ERR_LX_NOT_SUPPORTED: return VERR_LX_EXE_NOT_SUPPORTED;
143	case KLDR_ERR_LE_NOT_SUPPORTED: return VERR_LE_EXE_NOT_SUPPORTED;
144	case KLDR_ERR_PE_NOT_SUPPORTED: return VERR_PE_EXE_NOT_SUPPORTED;
145	case KLDR_ERR_ELF_NOT_SUPPORTED: return VERR_ELF_EXE_NOT_SUPPORTED;
146	case KLDR_ERR_MACHO_NOT_SUPPORTED: return VERR_INVALID_EXE_SIGNATURE;
147	case KLDR_ERR_AOUT_NOT_SUPPORTED: return VERR_AOUT_EXE_NOT_SUPPORTED;
148
149	case KLDR_ERR_MODULE_NOT_FOUND: return VERR_MODULE_NOT_FOUND;
150	case KLDR_ERR_PREREQUISITE_MODULE_NOT_FOUND: return VERR_MODULE_NOT_FOUND;
151	case KLDR_ERR_MAIN_STACK_ALLOC_FAILED: return VERR_NO_MEMORY;
152	case KLDR_ERR_BUFFER_OVERFLOW: return VERR_BUFFER_OVERFLOW;
153	case KLDR_ERR_SYMBOL_NOT_FOUND: return VERR_SYMBOL_NOT_FOUND;
154	case KLDR_ERR_FORWARDER_SYMBOL: return VERR_BAD_EXE_FORMAT;
155	case KLDR_ERR_BAD_FIXUP: return VERR_BAD_EXE_FORMAT;
156	case KLDR_ERR_IMPORT_ORDINAL_OUT_OF_BOUNDS: return VERR_BAD_EXE_FORMAT;
157	case KLDR_ERR_NO_DEBUG_INFO: return VERR_FILE_NOT_FOUND;
158	case KLDR_ERR_ALREADY_MAPPED: return VERR_WRONG_ORDER;
159	case KLDR_ERR_NOT_MAPPED: return VERR_WRONG_ORDER;
160	case KLDR_ERR_ADDRESS_OVERFLOW: return VERR_NUMBER_TOO_BIG;
161
162	case KLDR_ERR_NOT_LOADED_DYNAMICALLY:
163	case KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE:
164	case KLDR_ERR_TOO_LONG_FORWARDER_CHAIN:
165	case KLDR_ERR_MODULE_TERMINATING:
166	case KLDR_ERR_PREREQUISITE_MODULE_TERMINATING:
167	case KLDR_ERR_MODULE_INIT_FAILED:
168	case KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED:
169	case KLDR_ERR_MODULE_INIT_FAILED_ALREADY:
170	case KLDR_ERR_PREREQUISITE_MODULE_INIT_FAILED_ALREADY:
171	case KLDR_ERR_PREREQUISITE_RECURSED_TOO_DEEPLY:
172	case KLDR_ERR_THREAD_ATTACH_FAILED:
173	case KLDR_ERR_TOO_MANY_MAPPINGS:
174	case KLDR_ERR_NOT_DLL:
175	case KLDR_ERR_NOT_EXE:
176	return VERR_GENERAL_FAILURE;
177
178
179	case KLDR_ERR_PE_UNSUPPORTED_MACHINE:
180	case KLDR_ERR_PE_BAD_FILE_HEADER:
181	case KLDR_ERR_PE_BAD_OPTIONAL_HEADER:
182	case KLDR_ERR_PE_BAD_SECTION_HEADER:
183	case KLDR_ERR_PE_BAD_FORWARDER:
184	case KLDR_ERR_PE_FORWARDER_IMPORT_NOT_FOUND:
185	case KLDR_ERR_PE_BAD_FIXUP:
186	case KLDR_ERR_PE_BAD_IMPORT:
187	return VERR_GENERAL_FAILURE;
188
189	case KLDR_ERR_LX_BAD_HEADER:
190	case KLDR_ERR_LX_BAD_LOADER_SECTION:
191	case KLDR_ERR_LX_BAD_FIXUP_SECTION:
192	case KLDR_ERR_LX_BAD_OBJECT_TABLE:
193	case KLDR_ERR_LX_BAD_PAGE_MAP:
194	case KLDR_ERR_LX_BAD_ITERDATA:
195	case KLDR_ERR_LX_BAD_ITERDATA2:
196	case KLDR_ERR_LX_BAD_BUNDLE:
197	case KLDR_ERR_LX_NO_SONAME:
198	case KLDR_ERR_LX_BAD_SONAME:
199	case KLDR_ERR_LX_BAD_FORWARDER:
200	case KLDR_ERR_LX_NRICHAIN_NOT_SUPPORTED:
201	return VERR_GENERAL_FAILURE;
202
203	default:
204	if (RT_FAILURE(krc))
205	return krc;
206	AssertMsgFailed(("krc=%d (%#x)\n", krc, krc));
207	return VERR_NO_TRANSLATION;
208	}
209	}
210
211
212	/**
213	* Converts a IPRT error code to an kLdr one.
214	*/
215	static int rtkldrConvertErrorFromIPRT(int rc)
216	{
217	if (RT_SUCCESS(rc))
218	return 0;
219	switch (rc)
220	{
221	case VERR_NO_MEMORY: return KLDR_ERR_NO_MEMORY;
222	case VERR_INVALID_PARAMETER: return KLDR_ERR_INVALID_PARAMETER;
223	case VERR_INVALID_HANDLE: return KLDR_ERR_INVALID_HANDLE;
224	case VERR_BUFFER_OVERFLOW: return KLDR_ERR_BUFFER_OVERFLOW;
225	default:
226	return rc;
227	}
228	}
229
230
231	/*
232	*
233	*
234	* Misc Helpers Implemented using IPRT instead of kLdr/native APIs.
235	*
236	*
237	*
238	*/
239
240
241	int kldrHlpPageAlloc(void **ppv, size_t cb, KLDRPROT enmProt, unsigned fFixed)
242	{
243	AssertReturn(fFixed, KLDR_ERR_INVALID_PARAMETER); /* fixed address allocation not supported. */
244
245	void *pv = RTMemPageAlloc(cb);
246	if (!pv)
247	return KLDR_ERR_NO_MEMORY;
248
249	int rc = kldrHlpPageProtect(pv, cb, enmProt);
250	if (!rc)
251	*ppv = pv;
252	else
253	RTMemPageFree(pv);
254	return rc;
255	}
256
257
258	int kldrHlpPageProtect(void *pv, size_t cb, KLDRPROT enmProt)
259	{
260	unsigned fProtect;
261	switch (enmProt)
262	{
263	case KLDRPROT_NOACCESS:
264	fProtect = RTMEM_PROT_NONE;
265	break;
266	case KLDRPROT_READONLY:
267	fProtect = RTMEM_PROT_READ;
268	break;
269	case KLDRPROT_READWRITE:
270	fProtect = RTMEM_PROT_READ \| RTMEM_PROT_WRITE;
271	break;
272	case KLDRPROT_EXECUTE:
273	fProtect = RTMEM_PROT_EXEC;
274	break;
275	case KLDRPROT_EXECUTE_READ:
276	fProtect = RTMEM_PROT_EXEC \| RTMEM_PROT_READ;
277	break;
278	case KLDRPROT_EXECUTE_READWRITE:
279	case KLDRPROT_EXECUTE_WRITECOPY:
280	fProtect = RTMEM_PROT_EXEC \| RTMEM_PROT_READ \| RTMEM_PROT_WRITE;
281	break;
282	default:
283	AssertMsgFailed(("enmProt=%d\n", enmProt));
284	return KLDR_ERR_INVALID_PARAMETER;
285	}
286
287	int rc = RTMemProtect(pv, cb, fProtect);
288	if (RT_SUCCESS(rc))
289	return 0;
290	return rtkldrConvertErrorFromIPRT(rc);
291	}
292
293
294	int kldrHlpPageFree(void *pv, size_t cb)
295	{
296	if (pv)
297	RTMemPageFree(pv);
298	return 0;
299	}
300
301
302	void * kldrHlpAlloc(size_t cb)
303	{
304	return RTMemAlloc(cb);
305	}
306
307
308	void * kldrHlpAllocZ(size_t cb)
309	{
310	return RTMemAllocZ(cb);
311	}
312
313
314	void kldrHlpFree(void *pv)
315	{
316	return RTMemFree(pv);
317	}
318
319
320	char kldrHlpGetFilename(const char pszFilename)
321	{
322	return RTPathFilename(pszFilename);
323	}
324
325
326	void kldrHlpAssertMsg(const char pszExpr, const char pszFile, unsigned iLine, const char *pszFunction)
327	{
328	AssertMsg1(pszExpr, iLine, pszFile, pszFunction);
329	}
330
331
332
333
334
335
336	/**
337	* The file reader operations.
338	* We provide our own based on IPRT instead of using the kLdr ones.
339	*/
340	extern "C" const KLDRRDROPS g_kLdrRdrFileOps;
341	extern "C" const KLDRRDROPS g_kLdrRdrFileOps =
342	{
343	/* .pszName = */ "IPRT",
344	/* .pNext = */ NULL,
345	/* .pfnCreate = */ rtkldrRdrCreate,
346	/* .pfnDestroy = */ rtkldrRdrDestroy,
347	/* .pfnRead = */ rtkldrRdrRead,
348	/* .pfnAllMap = */ rtkldrRdrAllMap,
349	/* .pfnAllUnmap = */ rtkldrRdrAllUnmap,
350	/* .pfnSize = */ rtkldrRdrSize,
351	/* .pfnTell = */ rtkldrRdrTell,
352	/* .pfnName = */ rtkldrRdrName,
353	/* .pfnPageSize = */ rtkldrRdrPageSize,
354	/* .pfnMap = */ rtkldrRdrMap,
355	/* .pfnRefresh = */ rtkldrRdrRefresh,
356	/* .pfnProtect = */ rtkldrRdrProtect,
357	/* .pfnUnmap = */ rtkldrRdrUnmap,
358	/* .pfnDone = */ rtkldrRdrDone,
359	/* .u32Dummy = */ 42
360	};
361
362
363	/** @copydoc KLDRRDROPS::pfnCreate
364	* @remark This is a dummy which isn't used. */
365	static int rtkldrRdrCreate( PPKLDRRDR ppRdr, const char *pszFilename)
366	{
367	AssertReleaseFailed();
368	return -1;
369	}
370
371
372	/** @copydoc KLDRRDROPS::pfnDestroy */
373	static int rtkldrRdrDestroy( PKLDRRDR pRdr)
374	{
375	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
376	int rc = pReader->pfnDestroy(pReader);
377	return rtkldrConvertErrorFromIPRT(rc);
378	}
379
380
381	/** @copydoc KLDRRDROPS::pfnRead */
382	static int rtkldrRdrRead( PKLDRRDR pRdr, void *pvBuf, size_t cb, KLDRFOFF off)
383	{
384	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
385	int rc = pReader->pfnRead(pReader, pvBuf, cb, off);
386	return rtkldrConvertErrorFromIPRT(rc);
387	}
388
389
390	/** @copydoc KLDRRDROPS::pfnAllMap */
391	static int rtkldrRdrAllMap( PKLDRRDR pRdr, const void **ppvBits)
392	{
393	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
394	int rc = pReader->pfnMap(pReader, ppvBits);
395	return rtkldrConvertErrorFromIPRT(rc);
396	}
397
398
399	/** @copydoc KLDRRDROPS::pfnAllUnmap */
400	static int rtkldrRdrAllUnmap(PKLDRRDR pRdr, const void *pvBits)
401	{
402	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
403	int rc = pReader->pfnUnmap(pReader, pvBits);
404	return rtkldrConvertErrorFromIPRT(rc);
405	}
406
407
408	/** @copydoc KLDRRDROPS::pfnSize */
409	static KLDRFOFF rtkldrRdrSize( PKLDRRDR pRdr)
410	{
411	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
412	return (KLDRFOFF)pReader->pfnSize(pReader);
413	}
414
415
416	/** @copydoc KLDRRDROPS::pfnTell */
417	static KLDRFOFF rtkldrRdrTell( PKLDRRDR pRdr)
418	{
419	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
420	return (KLDRFOFF)pReader->pfnTell(pReader);
421	}
422
423
424	/** @copydoc KLDRRDROPS::pfnName */
425	static const char * rtkldrRdrName(PKLDRRDR pRdr)
426	{
427	PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
428	return pReader->pfnLogName(pReader);
429	}
430
431
432	/** @copydoc KLDRRDROPS::pfnPageSize */
433	static size_t rtkldrRdrPageSize(PKLDRRDR pRdr)
434	{
435	return PAGE_SIZE;
436	}
437
438
439	/** @copydoc KLDRRDROPS::pfnMap */
440	static int rtkldrRdrMap( PKLDRRDR pRdr, void **ppvBase, uint32_t cSegments, PCKLDRSEG paSegments, unsigned fFixed)
441	{
442	//PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
443	AssertFailed();
444	return -1;
445	}
446
447
448	/** @copydoc KLDRRDROPS::pfnRefresh */
449	static int rtkldrRdrRefresh( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments)
450	{
451	//PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
452	AssertFailed();
453	return -1;
454	}
455
456
457	/** @copydoc KLDRRDROPS::pfnProtect */
458	static int rtkldrRdrProtect( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments, unsigned fUnprotectOrProtect)
459	{
460	//PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
461	AssertFailed();
462	return -1;
463	}
464
465
466	/** @copydoc KLDRRDROPS::pfnUnmap */
467	static int rtkldrRdrUnmap( PKLDRRDR pRdr, void *pvBase, uint32_t cSegments, PCKLDRSEG paSegments)
468	{
469	//PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
470	AssertFailed();
471	return -1;
472	}
473
474	/** @copydoc KLDRRDROPS::pfnDone */
475	static void rtkldrRdrDone( PKLDRRDR pRdr)
476	{
477	//PRTLDRREADER pReader = ((PRTKLDRRDR)pRdr)->pReader;
478	}
479
480
481
482
483
484
485	/**
486	* Operations for a kLdr module.
487	*/
488	static const RTLDROPS g_rtkldrOps =
489	{
490	"kLdr",
491	rtkldrClose,
492	NULL,
493	rtkldrDone,
494	rtkldrEnumSymbols,
495	/* ext */
496	rtkldrGetImageSize,
497	rtkldrGetBits,
498	rtkldrRelocate,
499	rtkldrGetSymbolEx,
500	42
501	};
502
503
504	/** @copydoc RTLDROPS::pfnClose */
505	static DECLCALLBACK(int) rtkldrClose(PRTLDRMODINTERNAL pMod)
506	{
507	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
508	int rc = kLdrModClose(pModkLdr);
509	return rtkldrConvertError(rc);
510	}
511
512
513	/** @copydoc RTLDROPS::pfnDone */
514	static DECLCALLBACK(int) rtkldrDone(PRTLDRMODINTERNAL pMod)
515	{
516	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
517	int rc = kLdrModMostlyDone(pModkLdr);
518	return rtkldrConvertError(rc);
519	}
520
521
522	/** @copydoc RTLDROPS::pfnEnumSymbols */
523	static DECLCALLBACK(int) rtkldrEnumSymbols(PRTLDRMODINTERNAL pMod, unsigned fFlags, const void *pvBits, RTUINTPTR BaseAddress,
524	PFNRTLDRENUMSYMS pfnCallback, void *pvUser)
525	{
526	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
527	RTLDRMODKLDRARGS Args;
528	Args.pvUser = pvUser;
529	Args.u.pfnEnumSyms = pfnCallback;
530	Args.pMod = (PRTLDRMODKLDR)pMod;
531	Args.pvBits = pvBits;
532	int rc = kLdrModEnumSymbols(pModkLdr, pvBits, BaseAddress,
533	fFlags & RTLDR_ENUM_SYMBOL_FLAGS_ALL ? KLDRMOD_ENUM_SYMS_FLAGS_ALL : 0,
534	rtkldrEnumSymbolsWrapper, &Args);
535	return rtkldrConvertError(rc);
536	}
537
538
539	/** @copydoc FNKLDRMODENUMSYMS */
540	static int rtkldrEnumSymbolsWrapper(PKLDRMOD pMod, uint32_t iSymbol,
541	const char pchSymbol, size_t cchSymbol, const char pszVersion,
542	KLDRADDR uValue, uint32_t fKind, void *pvUser)
543	{
544	PRTLDRMODKLDRARGS pArgs = (PRTLDRMODKLDRARGS)pvUser;
545
546	/* If not zero terminated we'll have to use a temporary buffer. */
547	const char *pszSymbol = pchSymbol;
548	if (pchSymbol && pchSymbol[cchSymbol])
549	{
550	char psz = (char )alloca(cchSymbol) + 1;
551	memcpy(psz, pchSymbol, cchSymbol);
552	psz[cchSymbol] = '\0';
553	pszSymbol = psz;
554	}
555
556	#if defined(RT_OS_OS2) \|\| (defined(RT_OS_DARWIN) && defined(RT_ARCH_X86))
557	/* skip the underscore prefix. */
558	if (*pszSymbol == '_')
559	pszSymbol++;
560	#endif
561
562	int rc = pArgs->u.pfnEnumSyms(&pArgs->pMod->Core, pszSymbol, iSymbol, uValue, pArgs->pvUser);
563	if (RT_FAILURE(rc))
564	return rc; /* don't bother converting. */
565	return 0;
566	}
567
568
569	/** @copydoc RTLDROPS::pfnGetImageSize */
570	static DECLCALLBACK(size_t) rtkldrGetImageSize(PRTLDRMODINTERNAL pMod)
571	{
572	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
573	return kLdrModSize(pModkLdr);
574	}
575
576
577	/** @copydoc RTLDROPS::pfnGetBits */
578	static DECLCALLBACK(int) rtkldrGetBits(PRTLDRMODINTERNAL pMod, void *pvBits, RTUINTPTR BaseAddress,
579	PFNRTLDRIMPORT pfnGetImport, void *pvUser)
580	{
581	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
582	RTLDRMODKLDRARGS Args;
583	Args.pvUser = pvUser;
584	Args.u.pfnGetImport = pfnGetImport;
585	Args.pMod = (PRTLDRMODKLDR)pMod;
586	Args.pvBits = pvBits;
587	int rc = kLdrModGetBits(pModkLdr, pvBits, BaseAddress, rtkldrGetImportWrapper, &Args);
588	return rtkldrConvertError(rc);
589	}
590
591
592	/** @copydoc RTLDROPS::pfnRelocate */
593	static DECLCALLBACK(int) rtkldrRelocate(PRTLDRMODINTERNAL pMod, void *pvBits, RTUINTPTR NewBaseAddress,
594	RTUINTPTR OldBaseAddress, PFNRTLDRIMPORT pfnGetImport, void *pvUser)
595	{
596	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
597	RTLDRMODKLDRARGS Args;
598	Args.pvUser = pvUser;
599	Args.u.pfnGetImport = pfnGetImport;
600	Args.pMod = (PRTLDRMODKLDR)pMod;
601	Args.pvBits = pvBits;
602	int rc = kLdrModRelocateBits(pModkLdr, pvBits, NewBaseAddress, OldBaseAddress, rtkldrGetImportWrapper, &Args);
603	return rtkldrConvertError(rc);
604	}
605
606
607	/** @copydoc FNKLDRMODGETIMPORT */
608	static int rtkldrGetImportWrapper(PKLDRMOD pMod, uint32_t iImport, uint32_t iSymbol, const char *pchSymbol, size_t cchSymbol,
609	const char pszVersion, PKLDRADDR puValue, uint32_t pfKind, void *pvUser)
610	{
611	PRTLDRMODKLDRARGS pArgs = (PRTLDRMODKLDRARGS)pvUser;
612
613	/* If not zero terminated we'll have to use a temporary buffer. */
614	const char *pszSymbol = pchSymbol;
615	if (pchSymbol && pchSymbol[cchSymbol])
616	{
617	char psz = (char )alloca(cchSymbol) + 1;
618	memcpy(psz, pchSymbol, cchSymbol);
619	psz[cchSymbol] = '\0';
620	pszSymbol = psz;
621	}
622
623	#if defined(RT_OS_OS2) \|\| (defined(RT_OS_DARWIN) && defined(RT_ARCH_X86))
624	/* skip the underscore prefix. */
625	if (*pszSymbol == '_')
626	pszSymbol++;
627	#endif
628
629	/* get the import module name - TODO: cache this */
630	const char *pszModule = NULL;
631	if (iImport != NIL_KLDRMOD_IMPORT)
632	{
633	char pszBuf = (char )alloca(64);
634	int rc = kLdrModGetImport(pMod, pArgs->pvBits, iImport, pszBuf, 64);
635	if (rc)
636	return rc;
637	pszModule = pszBuf;
638	}
639
640	/* do the query */
641	RTUINTPTR Value;
642	int rc = pArgs->u.pfnGetImport(&pArgs->pMod->Core, pszModule, pszSymbol, pszSymbol ? ~0 : iSymbol, &Value, pArgs->pvUser);
643	if (RT_SUCCESS(rc))
644	{
645	*puValue = Value;
646	return 0;
647	}
648	return rtkldrConvertErrorFromIPRT(rc);
649	}
650
651
652
653	/** @copydoc RTLDROPS::pfnGetSymbolEx */
654	static DECLCALLBACK(int) rtkldrGetSymbolEx(PRTLDRMODINTERNAL pMod, const void *pvBits, RTUINTPTR BaseAddress,
655	const char pszSymbol, RTUINTPTR pValue)
656	{
657	PKLDRMOD pModkLdr = ((PRTLDRMODKLDR)pMod)->pMod;
658	KLDRADDR uValue;
659
660	#if defined(RT_OS_OS2) \|\| (defined(RT_OS_DARWIN) && defined(RT_ARCH_X86))
661	/*
662	* Add underscore prefix.
663	*/
664	if (pszSymbol)
665	{
666	size_t cch = strlen(pszSymbol);
667	char psz = (char )alloca(cch + 2);
668	memcpy(psz + 1, pszSymbol, cch + 1);
669	*psz = '_';
670	pszSymbol = psz;
671	}
672	#endif
673
674	int rc = kLdrModQuerySymbol(pModkLdr, pvBits, BaseAddress,
675	NIL_KLDRMOD_SYM_ORDINAL, pszSymbol, strlen(pszSymbol), NULL,
676	NULL, NULL, &uValue, NULL);
677	if (!rc)
678	{
679	*pValue = uValue;
680	return VINF_SUCCESS;
681	}
682	return rtkldrConvertError(rc);
683	}
684
685
686
687	/**
688	* Open a image using kLdr.
689	*
690	* @returns iprt status code.
691	* @param pReader The loader reader instance which will provide the raw image bits.
692	* @param phLdrMod Where to store the handle.
693	*/
694	int rtldrkLdrOpen(PRTLDRREADER pReader, PRTLDRMOD phLdrMod)
695	{
696	/* Create a rtkldrRdr instance. */
697	PRTKLDRRDR pRdr = (PRTKLDRRDR)RTMemAllocZ(sizeof(*pRdr));
698	if (!pRdr)
699	return VERR_NO_MEMORY;
700	pRdr->Core.u32Magic = KLDRRDR_MAGIC;
701	pRdr->Core.pOps = &g_kLdrRdrFileOps;
702	pRdr->pReader = pReader;
703
704	/* Try open it. */
705	PKLDRMOD pMod;
706	int krc = kLdrModOpenFromRdr(&pRdr->Core, &pMod);
707	if (!krc)
708	{
709	/* Create a module wrapper for it. */
710	PRTLDRMODKLDR pNewMod = (PRTLDRMODKLDR)RTMemAllocZ(sizeof(*pNewMod));
711	if (pNewMod)
712	{
713	pNewMod->Core.u32Magic = RTLDRMOD_MAGIC;
714	pNewMod->Core.eState = LDR_STATE_OPENED;
715	pNewMod->Core.pOps = &g_rtkldrOps;
716	pNewMod->pMod = pMod;
717	*phLdrMod = &pNewMod->Core;
718	return VINF_SUCCESS;
719	}
720	kLdrModClose(pMod);
721	krc = KLDR_ERR_NO_MEMORY;
722	}
723	return rtkldrConvertError(krc);
724	}
725

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source: vbox/trunk/src/VBox/Runtime/ldrkLdr.cpp@ 5005

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