1 | /* $Id: PDMLdr.cpp 914 2007-02-14 23:23:08Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * PDM - Pluggable Device Manager, module loader.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006 InnoTek Systemberatung 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 | * If you received this file as part of a commercial VirtualBox
|
---|
18 | * distribution, then only the terms of your commercial VirtualBox
|
---|
19 | * license agreement apply instead of the previous paragraph.
|
---|
20 | */
|
---|
21 |
|
---|
22 | #if defined(__OS2__)
|
---|
23 | # define PDMLDR_FAKE_MODE
|
---|
24 | #endif
|
---|
25 |
|
---|
26 | /*******************************************************************************
|
---|
27 | * Header Files *
|
---|
28 | *******************************************************************************/
|
---|
29 | #define LOG_GROUP LOG_GROUP_PDM_LDR
|
---|
30 | #include "PDMInternal.h"
|
---|
31 | #include <VBox/pdm.h>
|
---|
32 | #include <VBox/mm.h>
|
---|
33 | #include <VBox/vmm.h>
|
---|
34 | #include <VBox/vm.h>
|
---|
35 | #include <VBox/sup.h>
|
---|
36 | #include <VBox/param.h>
|
---|
37 | #include <VBox/err.h>
|
---|
38 | #include <VBox/hwaccm.h>
|
---|
39 |
|
---|
40 | #include <VBox/log.h>
|
---|
41 | #include <iprt/assert.h>
|
---|
42 | #include <iprt/alloc.h>
|
---|
43 | #include <iprt/ldr.h>
|
---|
44 | #include <iprt/path.h>
|
---|
45 | #include <iprt/string.h>
|
---|
46 |
|
---|
47 | #include <limits.h>
|
---|
48 |
|
---|
49 |
|
---|
50 | /*******************************************************************************
|
---|
51 | * Structures and Typedefs *
|
---|
52 | *******************************************************************************/
|
---|
53 | /**
|
---|
54 | * Structure which the user argument of the RTLdrGetBits() callback points to.
|
---|
55 | * @internal
|
---|
56 | */
|
---|
57 | typedef struct PDMGETIMPORTARGS
|
---|
58 | {
|
---|
59 | PVM pVM;
|
---|
60 | PPDMMOD pModule;
|
---|
61 | } PDMGETIMPORTARGS, *PPDMGETIMPORTARGS;
|
---|
62 |
|
---|
63 |
|
---|
64 | /*******************************************************************************
|
---|
65 | * Internal Functions *
|
---|
66 | *******************************************************************************/
|
---|
67 | static DECLCALLBACK(int) pdmr3GetImportGC(RTLDRMOD hLdrMod, const char *pszModule, const char *pszSymbol, unsigned uSymbol, RTUINTPTR *pValue, void *pvUser);
|
---|
68 | static int pdmR3LoadR0(PVM pVM, const char *pszFilename, const char *pszName);
|
---|
69 | static char * pdmR3FileGC(const char *pszFile);
|
---|
70 | static char * pdmR3FileR0(const char *pszFile);
|
---|
71 | static char * pdmR3File(const char *pszFile, const char *pszDefaultExt);
|
---|
72 | static DECLCALLBACK(int) pdmR3QueryModFromEIPEnumSymbols(RTLDRMOD hLdrMod, const char *pszSymbol, unsigned uSymbol, RTUINTPTR Value, void *pvUser);
|
---|
73 |
|
---|
74 |
|
---|
75 |
|
---|
76 | /**
|
---|
77 | * Init the module loader part of PDM.
|
---|
78 | *
|
---|
79 | * This routine will load the Host Context Ring-0 and Guest
|
---|
80 | * Context VMM modules.
|
---|
81 | *
|
---|
82 | * @returns VBox stutus code.
|
---|
83 | * @param pVM VM handle.
|
---|
84 | */
|
---|
85 | int pdmR3LdrInit(PVM pVM)
|
---|
86 | {
|
---|
87 | #ifdef PDMLDR_FAKE_MODE
|
---|
88 | return VINF_SUCCESS;
|
---|
89 |
|
---|
90 | #else
|
---|
91 |
|
---|
92 | /*
|
---|
93 | * Load the mandatory R0 and GC modules.
|
---|
94 | */
|
---|
95 | int rc = pdmR3LoadR0(pVM, NULL, "VMMR0.r0");
|
---|
96 | if (VBOX_SUCCESS(rc))
|
---|
97 | rc = PDMR3LoadGC(pVM, NULL, VMMGC_MAIN_MODULE_NAME);
|
---|
98 | return rc;
|
---|
99 | #endif
|
---|
100 | }
|
---|
101 |
|
---|
102 | /**
|
---|
103 | * Terminate the module loader part of PDM.
|
---|
104 | *
|
---|
105 | * This will unload and free all modules.
|
---|
106 | *
|
---|
107 | * @param pVM The VM handle.
|
---|
108 | */
|
---|
109 | void pdmR3LdrTerm(PVM pVM)
|
---|
110 | {
|
---|
111 | /*
|
---|
112 | * Free the modules.
|
---|
113 | */
|
---|
114 | PPDMMOD pModule = pVM->pdm.s.pModules;
|
---|
115 | while (pModule)
|
---|
116 | {
|
---|
117 | /* free loader item. */
|
---|
118 | if (pModule->hLdrMod != NIL_RTLDRMOD)
|
---|
119 | {
|
---|
120 | int rc2 = RTLdrClose(pModule->hLdrMod);
|
---|
121 | AssertRC(rc2);
|
---|
122 | pModule->hLdrMod = NIL_RTLDRMOD;
|
---|
123 | }
|
---|
124 |
|
---|
125 | /* free bits. */
|
---|
126 | switch (pModule->eType)
|
---|
127 | {
|
---|
128 | case PDMMOD_TYPE_R0:
|
---|
129 | {
|
---|
130 | Assert(pModule->ImageBase);
|
---|
131 | int rc2 = SUPFreeModule((void *)(uintptr_t)pModule->ImageBase);
|
---|
132 | AssertRC(rc2);
|
---|
133 | pModule->ImageBase = 0;
|
---|
134 | break;
|
---|
135 | }
|
---|
136 |
|
---|
137 | case PDMMOD_TYPE_GC:
|
---|
138 | case PDMMOD_TYPE_R3:
|
---|
139 | /* MM will free this memory for us - it's alloc only memory. :-) */
|
---|
140 | break;
|
---|
141 |
|
---|
142 | default:
|
---|
143 | AssertMsgFailed(("eType=%d\n", pModule->eType));
|
---|
144 | break;
|
---|
145 | }
|
---|
146 | pModule->pvBits = NULL;
|
---|
147 |
|
---|
148 | void *pvFree = pModule;
|
---|
149 | pModule = pModule->pNext;
|
---|
150 | RTMemFree(pvFree);
|
---|
151 | }
|
---|
152 | }
|
---|
153 |
|
---|
154 |
|
---|
155 | /**
|
---|
156 | * Applies relocations to GC modules.
|
---|
157 | *
|
---|
158 | * This must be done very early in the relocation
|
---|
159 | * process so that components can resolve GC symbols during relocation.
|
---|
160 | *
|
---|
161 | * @param pVM VM handle.
|
---|
162 | * @param offDelta Relocation delta relative to old location.
|
---|
163 | */
|
---|
164 | PDMR3DECL(void) PDMR3LdrRelocate(PVM pVM, RTGCINTPTR offDelta)
|
---|
165 | {
|
---|
166 | LogFlow(("PDMR3LdrRelocate: offDelta=%VGv\n", offDelta));
|
---|
167 |
|
---|
168 | /*
|
---|
169 | * GC Modules.
|
---|
170 | */
|
---|
171 | if (pVM->pdm.s.pModules)
|
---|
172 | {
|
---|
173 | /*
|
---|
174 | * The relocation have to be done in two passes so imports
|
---|
175 | * can be correctely resolved. The first pass will update
|
---|
176 | * the ImageBase saving the current value in OldImageBase.
|
---|
177 | * The second pass will do the actual relocation.
|
---|
178 | */
|
---|
179 | /* pass 1 */
|
---|
180 | PPDMMOD pCur;
|
---|
181 | for (pCur = pVM->pdm.s.pModules; pCur; pCur = pCur->pNext)
|
---|
182 | {
|
---|
183 | if (pCur->eType == PDMMOD_TYPE_GC)
|
---|
184 | {
|
---|
185 | pCur->OldImageBase = pCur->ImageBase;
|
---|
186 | pCur->ImageBase = MMHyperHC2GC(pVM, pCur->pvBits);
|
---|
187 | }
|
---|
188 | }
|
---|
189 |
|
---|
190 | /* pass 2 */
|
---|
191 | for (pCur = pVM->pdm.s.pModules; pCur; pCur = pCur->pNext)
|
---|
192 | {
|
---|
193 | if (pCur->eType == PDMMOD_TYPE_GC)
|
---|
194 | {
|
---|
195 | PDMGETIMPORTARGS Args;
|
---|
196 | Args.pVM = pVM;
|
---|
197 | Args.pModule = pCur;
|
---|
198 | int rc = RTLdrRelocate(pCur->hLdrMod, pCur->pvBits, pCur->ImageBase, pCur->OldImageBase,
|
---|
199 | pdmr3GetImportGC, &Args);
|
---|
200 | AssertFatalMsgRC(rc, ("RTLdrRelocate failed, rc=%d\n", rc));
|
---|
201 | DBGFR3ModuleRelocate(pVM, pCur->OldImageBase, pCur->ImageBase, RTLdrSize(pCur->hLdrMod),
|
---|
202 | pCur->szFilename, pCur->szName);
|
---|
203 | }
|
---|
204 | }
|
---|
205 | }
|
---|
206 | }
|
---|
207 |
|
---|
208 |
|
---|
209 | /**
|
---|
210 | * Loads a module into the host context ring-3.
|
---|
211 | *
|
---|
212 | * This is used by the driver and device init functions to load modules
|
---|
213 | * containing the drivers and devices. The function can be extended to
|
---|
214 | * load modules which are not native to the environment we're running in,
|
---|
215 | * but at the moment this is not required.
|
---|
216 | *
|
---|
217 | * No reference counting is kept, since we don't implement any facilities
|
---|
218 | * for unloading the module. But the module will naturally be released
|
---|
219 | * when the VM terminates.
|
---|
220 | *
|
---|
221 | * @returns VBox status code.
|
---|
222 | * @param pVM The VM to load it into.
|
---|
223 | * @param pszFilename Filename of the module binary.
|
---|
224 | * @param pszName Module name. Case sensitive and the length is limited!
|
---|
225 | */
|
---|
226 | int pdmR3LoadR3(PVM pVM, const char *pszFilename, const char *pszName)
|
---|
227 | {
|
---|
228 | /*
|
---|
229 | * Validate input.
|
---|
230 | */
|
---|
231 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
232 | Assert(pszFilename);
|
---|
233 | size_t cchFilename = strlen(pszFilename);
|
---|
234 | Assert(pszName);
|
---|
235 | size_t cchName = strlen(pszName);
|
---|
236 | PPDMMOD pCur;
|
---|
237 | if (cchName >= sizeof(pCur->szName))
|
---|
238 | {
|
---|
239 | AssertMsgFailed(("Name is too long, cchName=%d pszName='%s'\n", cchName, pszName));
|
---|
240 | return VERR_INVALID_PARAMETER;
|
---|
241 | }
|
---|
242 |
|
---|
243 | /*
|
---|
244 | * Try lookup the name and see if the module exists.
|
---|
245 | */
|
---|
246 | for (pCur = pVM->pdm.s.pModules; pCur; pCur = pCur->pNext)
|
---|
247 | {
|
---|
248 | if (!strcmp(pCur->szName, pszName))
|
---|
249 | {
|
---|
250 | if (pCur->eType == PDMMOD_TYPE_R3)
|
---|
251 | return VINF_PDM_ALREADY_LOADED;
|
---|
252 | AssertMsgFailed(("We've already got a module '%s' loaded!\n", pszName));
|
---|
253 | return VERR_PDM_MODULE_NAME_CLASH;
|
---|
254 | }
|
---|
255 | }
|
---|
256 |
|
---|
257 | /*
|
---|
258 | * Allocate the module list node and initialize it.
|
---|
259 | */
|
---|
260 | PPDMMOD pModule = (PPDMMOD)RTMemAllocZ(sizeof(*pModule) + cchFilename);
|
---|
261 | if (!pModule)
|
---|
262 | return VERR_NO_MEMORY;
|
---|
263 |
|
---|
264 | pModule->eType = PDMMOD_TYPE_R3;
|
---|
265 | memcpy(pModule->szName, pszName, cchName); /* memory is zero'ed, no need to copy terminator :-) */
|
---|
266 | memcpy(pModule->szFilename, pszFilename, cchFilename);
|
---|
267 |
|
---|
268 | /*
|
---|
269 | * Load the loader item.
|
---|
270 | */
|
---|
271 | int rc = RTLdrLoad(pszFilename, &pModule->hLdrMod);
|
---|
272 | if (VBOX_SUCCESS(rc))
|
---|
273 | {
|
---|
274 | pModule->pNext = pVM->pdm.s.pModules;
|
---|
275 | pVM->pdm.s.pModules = pModule;
|
---|
276 | return rc;
|
---|
277 | }
|
---|
278 |
|
---|
279 | RTMemFree(pModule);
|
---|
280 | return rc;
|
---|
281 | }
|
---|
282 |
|
---|
283 |
|
---|
284 | /**
|
---|
285 | * Resolve an external symbol during RTLdrGetBits() of a GC module.
|
---|
286 | *
|
---|
287 | * @returns VBox status code.
|
---|
288 | * @param hLdrMod The loader module handle.
|
---|
289 | * @param pszModule Module name.
|
---|
290 | * @param pszSymbol Symbol name, NULL if uSymbol should be used.
|
---|
291 | * @param uSymbol Symbol ordinal, ~0 if pszSymbol should be used.
|
---|
292 | * @param pValue Where to store the symbol value (address).
|
---|
293 | * @param pvUser User argument.
|
---|
294 | */
|
---|
295 | static DECLCALLBACK(int) pdmr3GetImportGC(RTLDRMOD hLdrMod, const char *pszModule, const char *pszSymbol, unsigned uSymbol, RTUINTPTR *pValue, void *pvUser)
|
---|
296 | {
|
---|
297 | PVM pVM = ((PPDMGETIMPORTARGS)pvUser)->pVM;
|
---|
298 | PPDMMOD pModule = ((PPDMGETIMPORTARGS)pvUser)->pModule;
|
---|
299 |
|
---|
300 | /*
|
---|
301 | * Adjust input.
|
---|
302 | */
|
---|
303 | if (pszModule && !*pszModule)
|
---|
304 | pszModule = NULL;
|
---|
305 |
|
---|
306 | /*
|
---|
307 | * Builtin module.
|
---|
308 | */
|
---|
309 | if (!pszModule || !strcmp(pszModule, "VMMGCBuiltin.gc"))
|
---|
310 | {
|
---|
311 | int rc = VINF_SUCCESS;
|
---|
312 | if (!strcmp(pszSymbol, "g_VM"))
|
---|
313 | *pValue = pVM->pVMGC;
|
---|
314 | else if (!strcmp(pszSymbol, "g_CPUM"))
|
---|
315 | *pValue = VM_GUEST_ADDR(pVM, &pVM->cpum);
|
---|
316 | else if (!strcmp(pszSymbol, "g_TRPM"))
|
---|
317 | *pValue = VM_GUEST_ADDR(pVM, &pVM->trpm);
|
---|
318 | else if ( !strncmp(pszSymbol, "VMM", 3)
|
---|
319 | || !strcmp(pszSymbol, "g_Logger")
|
---|
320 | || !strcmp(pszSymbol, "g_RelLogger"))
|
---|
321 | {
|
---|
322 | RTGCPTR GCPtr = 0;
|
---|
323 | rc = VMMR3GetImportGC(pVM, pszSymbol, &GCPtr);
|
---|
324 | if (VBOX_SUCCESS(rc))
|
---|
325 | *pValue = GCPtr;
|
---|
326 | }
|
---|
327 | else if ( !strncmp(pszSymbol, "TM", 2)
|
---|
328 | || !strcmp(pszSymbol, "g_pSUPGlobalInfoPage"))
|
---|
329 | {
|
---|
330 | RTGCPTR GCPtr = 0;
|
---|
331 | rc = TMR3GetImportGC(pVM, pszSymbol, &GCPtr);
|
---|
332 | if (VBOX_SUCCESS(rc))
|
---|
333 | *pValue = GCPtr;
|
---|
334 | }
|
---|
335 | else
|
---|
336 | {
|
---|
337 | AssertMsg(!pszModule, ("Unknown builtin symbol '%s' for module '%s'!\n", pszSymbol, pModule->szName)); NOREF(pModule);
|
---|
338 | rc = VERR_SYMBOL_NOT_FOUND;
|
---|
339 | }
|
---|
340 | if (VBOX_SUCCESS(rc) || pszModule)
|
---|
341 | return rc;
|
---|
342 | }
|
---|
343 |
|
---|
344 | /*
|
---|
345 | * Search for module.
|
---|
346 | */
|
---|
347 | PPDMMOD pCur = pVM->pdm.s.pModules;
|
---|
348 | while (pCur)
|
---|
349 | {
|
---|
350 | if ( pCur->eType == PDMMOD_TYPE_GC
|
---|
351 | && ( !pszModule
|
---|
352 | || !strcmp(pCur->szName, pszModule))
|
---|
353 | )
|
---|
354 | {
|
---|
355 | /* Search for the symbol. */
|
---|
356 | int rc = RTLdrGetSymbolEx(pCur->hLdrMod, pCur->pvBits, pCur->ImageBase, pszSymbol, pValue);
|
---|
357 | if (VBOX_SUCCESS(rc))
|
---|
358 | {
|
---|
359 | AssertMsg(*pValue - pCur->ImageBase < RTLdrSize(pCur->hLdrMod),
|
---|
360 | ("%VGv-%VGv %s %VGv\n", (RTGCPTR)pCur->ImageBase,
|
---|
361 | (RTGCPTR)(pCur->ImageBase + RTLdrSize(pCur->hLdrMod) - 1),
|
---|
362 | pszSymbol, (RTGCPTR)*pValue));
|
---|
363 | return rc;
|
---|
364 | }
|
---|
365 | if (pszModule)
|
---|
366 | {
|
---|
367 | AssertMsgFailed(("Couldn't find symbol '%s' in module '%s'!\n", pszSymbol, pszModule));
|
---|
368 | LogRel(("PDMLdr: Couldn't find symbol '%s' in module '%s'!\n", pszSymbol, pszModule));
|
---|
369 | return VERR_SYMBOL_NOT_FOUND;
|
---|
370 | }
|
---|
371 | }
|
---|
372 |
|
---|
373 | /* next */
|
---|
374 | pCur = pCur->pNext;
|
---|
375 | }
|
---|
376 |
|
---|
377 | AssertMsgFailed(("Couldn't find module '%s' for resolving symbol '%s'!\n", pszModule, pszSymbol));
|
---|
378 | return VERR_SYMBOL_NOT_FOUND;
|
---|
379 | }
|
---|
380 |
|
---|
381 |
|
---|
382 | /**
|
---|
383 | * Loads a module into the guest context (i.e. into the Hypervisor memory region).
|
---|
384 | *
|
---|
385 | * The external (to PDM) use of this interface is to load VMMGC.gc.
|
---|
386 | *
|
---|
387 | * @returns VBox status code.
|
---|
388 | * @param pVM The VM to load it into.
|
---|
389 | * @param pszFilename Filename of the module binary.
|
---|
390 | * @param pszName Module name. Case sensitive and the length is limited!
|
---|
391 | */
|
---|
392 | PDMR3DECL(int) PDMR3LoadGC(PVM pVM, const char *pszFilename, const char *pszName)
|
---|
393 | {
|
---|
394 | /*
|
---|
395 | * Validate input.
|
---|
396 | */
|
---|
397 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
398 | PPDMMOD pCur = pVM->pdm.s.pModules;
|
---|
399 | while (pCur)
|
---|
400 | {
|
---|
401 | if (!strcmp(pCur->szName, pszName))
|
---|
402 | {
|
---|
403 | AssertMsgFailed(("We've already got a module '%s' loaded!\n", pszName));
|
---|
404 | return VERR_PDM_MODULE_NAME_CLASH;
|
---|
405 | }
|
---|
406 | /* next */
|
---|
407 | pCur = pCur->pNext;
|
---|
408 | }
|
---|
409 |
|
---|
410 | /*
|
---|
411 | * Find the file if not specified.
|
---|
412 | */
|
---|
413 | char *pszFile = NULL;
|
---|
414 | if (!pszFilename)
|
---|
415 | pszFilename = pszFile = pdmR3FileGC(pszName);
|
---|
416 |
|
---|
417 | /*
|
---|
418 | * Allocate the module list node.
|
---|
419 | */
|
---|
420 | PPDMMOD pModule = (PPDMMOD)RTMemAllocZ(sizeof(*pModule) + strlen(pszFilename));
|
---|
421 | if (!pModule)
|
---|
422 | {
|
---|
423 | RTMemTmpFree(pszFile);
|
---|
424 | return VERR_NO_MEMORY;
|
---|
425 | }
|
---|
426 | AssertMsg(strlen(pszName) + 1 < sizeof(pModule->szName),
|
---|
427 | ("pazName is too long (%d chars) max is %d chars.\n", strlen(pszName), sizeof(pModule->szName) - 1));
|
---|
428 | strcpy(pModule->szName, pszName);
|
---|
429 | pModule->eType = PDMMOD_TYPE_GC;
|
---|
430 | strcpy(pModule->szFilename, pszFilename);
|
---|
431 |
|
---|
432 |
|
---|
433 | /*
|
---|
434 | * Open the loader item.
|
---|
435 | */
|
---|
436 | int rc = RTLdrOpen(pszFilename, &pModule->hLdrMod);
|
---|
437 | if (VBOX_SUCCESS(rc))
|
---|
438 | {
|
---|
439 | /*
|
---|
440 | * Allocate space in the hypervisor.
|
---|
441 | */
|
---|
442 | size_t cb = RTLdrSize(pModule->hLdrMod);
|
---|
443 | cb = RT_ALIGN_Z(cb, PAGE_SIZE);
|
---|
444 | rc = SUPPageAlloc(cb >> PAGE_SHIFT, &pModule->pvBits);
|
---|
445 | if (VBOX_SUCCESS(rc))
|
---|
446 | {
|
---|
447 | RTGCPTR GCPtr;
|
---|
448 | rc = MMR3HyperMapHCRam(pVM, pModule->pvBits, cb, true, pModule->szName, &GCPtr);
|
---|
449 | if (VBOX_SUCCESS(rc))
|
---|
450 | {
|
---|
451 | MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
|
---|
452 |
|
---|
453 | /*
|
---|
454 | * Get relocated image bits.
|
---|
455 | */
|
---|
456 | Assert(MMHyperHC2GC(pVM, pModule->pvBits) == GCPtr);
|
---|
457 | pModule->ImageBase = GCPtr;
|
---|
458 | PDMGETIMPORTARGS Args;
|
---|
459 | Args.pVM = pVM;
|
---|
460 | Args.pModule = pModule;
|
---|
461 | rc = RTLdrGetBits(pModule->hLdrMod, pModule->pvBits, pModule->ImageBase, pdmr3GetImportGC, &Args);
|
---|
462 | if (VBOX_SUCCESS(rc))
|
---|
463 | {
|
---|
464 | /*
|
---|
465 | * Insert the module.
|
---|
466 | */
|
---|
467 | if (pVM->pdm.s.pModules)
|
---|
468 | {
|
---|
469 | /* we don't expect this list to be very long, so rather save the tail pointer. */
|
---|
470 | PPDMMOD pCur = pVM->pdm.s.pModules;
|
---|
471 | while (pCur->pNext)
|
---|
472 | pCur = pCur->pNext;
|
---|
473 | pCur->pNext = pModule;
|
---|
474 | }
|
---|
475 | else
|
---|
476 | pVM->pdm.s.pModules = pModule; /* (pNext is zeroed by alloc) */
|
---|
477 | Log(("PDM: GC Module at %VGvx %s (%s)\n", (RTGCPTR)pModule->ImageBase, pszName, pszFilename));
|
---|
478 | RTMemTmpFree(pszFile);
|
---|
479 | return VINF_SUCCESS;
|
---|
480 | }
|
---|
481 | }
|
---|
482 | else
|
---|
483 | {
|
---|
484 | AssertRC(rc);
|
---|
485 | SUPPageFree(pModule->pvBits);
|
---|
486 | }
|
---|
487 | }
|
---|
488 | else
|
---|
489 | AssertMsgFailed(("SUPPageAlloc(%d,) -> %Vrc\n", cb >> PAGE_SHIFT, rc));
|
---|
490 | int rc2 = RTLdrClose(pModule->hLdrMod);
|
---|
491 | AssertRC(rc2);
|
---|
492 | }
|
---|
493 | RTMemFree(pModule);
|
---|
494 | RTMemTmpFree(pszFile);
|
---|
495 |
|
---|
496 | return rc;
|
---|
497 | }
|
---|
498 |
|
---|
499 |
|
---|
500 | /**
|
---|
501 | * Loads a module into the ring-0 context.
|
---|
502 | *
|
---|
503 | * @returns VBox status code.
|
---|
504 | * @param pVM The VM to load it into.
|
---|
505 | * @param pszFilename Filename of the module binary.
|
---|
506 | * @param pszName Module name. Case sensitive and the length is limited!
|
---|
507 | */
|
---|
508 | static int pdmR3LoadR0(PVM pVM, const char *pszFilename, const char *pszName)
|
---|
509 | {
|
---|
510 | /*
|
---|
511 | * Validate input.
|
---|
512 | */
|
---|
513 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
514 | PPDMMOD pCur = pVM->pdm.s.pModules;
|
---|
515 | while (pCur)
|
---|
516 | {
|
---|
517 | if (!strcmp(pCur->szName, pszName))
|
---|
518 | {
|
---|
519 | AssertMsgFailed(("We've already got a module '%s' loaded!\n", pszName));
|
---|
520 | return VERR_PDM_MODULE_NAME_CLASH;
|
---|
521 | }
|
---|
522 | /* next */
|
---|
523 | pCur = pCur->pNext;
|
---|
524 | }
|
---|
525 |
|
---|
526 | /*
|
---|
527 | * Find the file if not specified.
|
---|
528 | */
|
---|
529 | char *pszFile = NULL;
|
---|
530 | if (!pszFilename)
|
---|
531 | pszFilename = pszFile = pdmR3FileR0(pszName);
|
---|
532 |
|
---|
533 | /*
|
---|
534 | * Allocate the module list node.
|
---|
535 | */
|
---|
536 | PPDMMOD pModule = (PPDMMOD)RTMemAllocZ(sizeof(*pModule) + strlen(pszFilename));
|
---|
537 | if (!pModule)
|
---|
538 | {
|
---|
539 | RTMemTmpFree(pszFile);
|
---|
540 | return VERR_NO_MEMORY;
|
---|
541 | }
|
---|
542 | AssertMsg(strlen(pszName) + 1 < sizeof(pModule->szName),
|
---|
543 | ("pazName is too long (%d chars) max is %d chars.\n", strlen(pszName), sizeof(pModule->szName) - 1));
|
---|
544 | strcpy(pModule->szName, pszName);
|
---|
545 | pModule->eType = PDMMOD_TYPE_R0;
|
---|
546 | strcpy(pModule->szFilename, pszFilename);
|
---|
547 |
|
---|
548 | /*
|
---|
549 | * Ask the support library to load it.
|
---|
550 | */
|
---|
551 | void *pvImageBase;
|
---|
552 | int rc = SUPLoadModule(pszFilename, pszName, &pvImageBase);
|
---|
553 | if (VBOX_SUCCESS(rc))
|
---|
554 | {
|
---|
555 | pModule->hLdrMod = NIL_RTLDRMOD;
|
---|
556 | pModule->ImageBase = (uintptr_t)pvImageBase;
|
---|
557 |
|
---|
558 | /*
|
---|
559 | * Insert the module.
|
---|
560 | */
|
---|
561 | if (pVM->pdm.s.pModules)
|
---|
562 | {
|
---|
563 | /* we don't expect this list to be very long, so rather save the tail pointer. */
|
---|
564 | PPDMMOD pCur = pVM->pdm.s.pModules;
|
---|
565 | while (pCur->pNext)
|
---|
566 | pCur = pCur->pNext;
|
---|
567 | pCur->pNext = pModule;
|
---|
568 | }
|
---|
569 | else
|
---|
570 | pVM->pdm.s.pModules = pModule; /* (pNext is zeroed by alloc) */
|
---|
571 | Log(("PDM: GC Module at %VGvx %s (%s)\n", (RTGCPTR)pModule->ImageBase, pszName, pszFilename));
|
---|
572 | RTMemTmpFree(pszFile);
|
---|
573 | return VINF_SUCCESS;
|
---|
574 | }
|
---|
575 |
|
---|
576 | RTMemFree(pModule);
|
---|
577 | RTMemTmpFree(pszFile);
|
---|
578 | LogRel(("pdmR3LoadR0: pszName=\"%s\" rc=%Vrc\n", pszName, rc));
|
---|
579 | return rc;
|
---|
580 | }
|
---|
581 |
|
---|
582 |
|
---|
583 |
|
---|
584 | /**
|
---|
585 | * Get the address of a symbol in a given HC ring 3 module.
|
---|
586 | *
|
---|
587 | * @returns VBox status code.
|
---|
588 | * @param pVM VM handle.
|
---|
589 | * @param pszModule Module name.
|
---|
590 | * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
|
---|
591 | * ordinal value rather than a string pointer.
|
---|
592 | * @param ppvValue Where to store the symbol value.
|
---|
593 | */
|
---|
594 | PDMR3DECL(int) PDMR3GetSymbolR3(PVM pVM, const char *pszModule, const char *pszSymbol, void **ppvValue)
|
---|
595 | {
|
---|
596 | /*
|
---|
597 | * Validate input.
|
---|
598 | */
|
---|
599 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
600 |
|
---|
601 | /*
|
---|
602 | * Find the module.
|
---|
603 | */
|
---|
604 | for (PPDMMOD pModule = pVM->pdm.s.pModules; pModule; pModule = pModule->pNext)
|
---|
605 | {
|
---|
606 | if ( pModule->eType == PDMMOD_TYPE_R3
|
---|
607 | && !strcmp(pModule->szName, pszModule))
|
---|
608 | {
|
---|
609 | RTUINTPTR Value = 0;
|
---|
610 | int rc = RTLdrGetSymbolEx(pModule->hLdrMod, pModule->pvBits, pModule->ImageBase, pszSymbol, &Value);
|
---|
611 | if (VBOX_SUCCESS(rc))
|
---|
612 | {
|
---|
613 | *ppvValue = (void *)(uintptr_t)Value;
|
---|
614 | Assert((uintptr_t)*ppvValue == Value);
|
---|
615 | }
|
---|
616 | else
|
---|
617 | {
|
---|
618 | if (pszSymbol < (const char*)(void*)0x10000)
|
---|
619 | AssertMsg(rc, ("Couldn't symbol '%u' in module '%s'\n", (unsigned)(uintptr_t)pszSymbol, pszModule));
|
---|
620 | else
|
---|
621 | AssertMsg(rc, ("Couldn't symbol '%s' in module '%s'\n", pszSymbol, pszModule));
|
---|
622 | }
|
---|
623 | return rc;
|
---|
624 | }
|
---|
625 | }
|
---|
626 |
|
---|
627 | AssertMsgFailed(("Couldn't locate module '%s'\n", pszModule));
|
---|
628 | return VERR_SYMBOL_NOT_FOUND;
|
---|
629 | }
|
---|
630 |
|
---|
631 |
|
---|
632 | /**
|
---|
633 | * Get the address of a symbol in a given HC ring 0 module.
|
---|
634 | *
|
---|
635 | * @returns VBox status code.
|
---|
636 | * @param pVM VM handle.
|
---|
637 | * @param pszModule Module name. If NULL the main R0 module (VMMR0.r0) is assumes.
|
---|
638 | * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
|
---|
639 | * ordinal value rather than a string pointer.
|
---|
640 | * @param ppvValue Where to store the symbol value.
|
---|
641 | */
|
---|
642 | PDMR3DECL(int) PDMR3GetSymbolR0(PVM pVM, const char *pszModule, const char *pszSymbol, void **ppvValue)
|
---|
643 | {
|
---|
644 | #ifdef PDMLDR_FAKE_MODE
|
---|
645 | *ppvValue = (void *)0xdeadbeef;
|
---|
646 | return VINF_SUCCESS;
|
---|
647 |
|
---|
648 | #else
|
---|
649 | /*
|
---|
650 | * Validate input.
|
---|
651 | */
|
---|
652 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
653 | if (!pszModule)
|
---|
654 | pszModule = "VMMR0.r0";
|
---|
655 |
|
---|
656 | /*
|
---|
657 | * Find the module.
|
---|
658 | */
|
---|
659 | for (PPDMMOD pModule = pVM->pdm.s.pModules; pModule; pModule = pModule->pNext)
|
---|
660 | {
|
---|
661 | if ( pModule->eType == PDMMOD_TYPE_R0
|
---|
662 | && !strcmp(pModule->szName, pszModule))
|
---|
663 | {
|
---|
664 | int rc = SUPGetSymbolR0((void *)(uintptr_t)pModule->ImageBase, pszSymbol, ppvValue);
|
---|
665 | if (VBOX_FAILURE(rc))
|
---|
666 | {
|
---|
667 | AssertMsgRC(rc, ("Couldn't find symbol '%s' in module '%s'\n", pszSymbol, pszModule));
|
---|
668 | LogRel(("PDMGetSymbol: Couldn't find symbol '%s' in module '%s'\n", pszSymbol, pszModule));
|
---|
669 | }
|
---|
670 | return rc;
|
---|
671 | }
|
---|
672 | }
|
---|
673 |
|
---|
674 | AssertMsgFailed(("Couldn't locate module '%s'\n", pszModule));
|
---|
675 | return VERR_SYMBOL_NOT_FOUND;
|
---|
676 | #endif
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 | /**
|
---|
681 | * Same as PDMR3GetSymbolR0 except that the module will be attempted loaded if not found.
|
---|
682 | *
|
---|
683 | * @returns VBox status code.
|
---|
684 | * @param pVM VM handle.
|
---|
685 | * @param pszModule Module name. If NULL the main R0 module (VMMR0.r0) is assumed.
|
---|
686 | * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
|
---|
687 | * ordinal value rather than a string pointer.
|
---|
688 | * @param ppvValue Where to store the symbol value.
|
---|
689 | */
|
---|
690 | PDMR3DECL(int) PDMR3GetSymbolR0Lazy(PVM pVM, const char *pszModule, const char *pszSymbol, void **ppvValue)
|
---|
691 | {
|
---|
692 | #ifdef PDMLDR_FAKE_MODE
|
---|
693 | *ppvValue = (void *)0xdeadbeef;
|
---|
694 | return VINF_SUCCESS;
|
---|
695 |
|
---|
696 | #else
|
---|
697 | /*
|
---|
698 | * Since we're lazy, we'll only check if the module is present
|
---|
699 | * and hand it over to PDMR3GetSymbolR0 when that's done.
|
---|
700 | */
|
---|
701 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
702 | if (pszModule)
|
---|
703 | {
|
---|
704 | AssertMsgReturn(!strpbrk(pszModule, "/\\:\n\r\t"), ("pszModule=%s\n", pszModule), VERR_INVALID_PARAMETER);
|
---|
705 | PPDMMOD pModule;
|
---|
706 | for (pModule = pVM->pdm.s.pModules; pModule; pModule = pModule->pNext)
|
---|
707 | if ( pModule->eType == PDMMOD_TYPE_R0
|
---|
708 | && !strcmp(pModule->szName, pszModule))
|
---|
709 | break;
|
---|
710 | if (!pModule)
|
---|
711 | {
|
---|
712 | int rc = pdmR3LoadR0(pVM, NULL, pszModule);
|
---|
713 | AssertMsgRCReturn(rc, ("pszModule=%s rc=%Vrc\n", pszModule, rc), VERR_MODULE_NOT_FOUND);
|
---|
714 | }
|
---|
715 | }
|
---|
716 | return PDMR3GetSymbolR0(pVM, pszModule, pszSymbol, ppvValue);
|
---|
717 | #endif
|
---|
718 | }
|
---|
719 |
|
---|
720 |
|
---|
721 | /**
|
---|
722 | * Get the address of a symbol in a given GC module.
|
---|
723 | *
|
---|
724 | * @returns VBox status code.
|
---|
725 | * @param pVM VM handle.
|
---|
726 | * @param pszModule Module name. If NULL the main R0 module (VMMGC.gc) is assumes.
|
---|
727 | * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
|
---|
728 | * ordinal value rather than a string pointer.
|
---|
729 | * @param pGCPtrValue Where to store the symbol value.
|
---|
730 | */
|
---|
731 | PDMR3DECL(int) PDMR3GetSymbolGC(PVM pVM, const char *pszModule, const char *pszSymbol, PRTGCPTR pGCPtrValue)
|
---|
732 | {
|
---|
733 | #ifdef PDMLDR_FAKE_MODE
|
---|
734 | *pGCPtrValue = 0xfeedf00d;
|
---|
735 | return VINF_SUCCESS;
|
---|
736 |
|
---|
737 | #else
|
---|
738 | /*
|
---|
739 | * Validate input.
|
---|
740 | */
|
---|
741 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
742 | if (!pszModule)
|
---|
743 | pszModule = "VMMGC.gc";
|
---|
744 |
|
---|
745 | /*
|
---|
746 | * Find the module.
|
---|
747 | */
|
---|
748 | for (PPDMMOD pModule = pVM->pdm.s.pModules; pModule; pModule = pModule->pNext)
|
---|
749 | {
|
---|
750 | if ( pModule->eType == PDMMOD_TYPE_GC
|
---|
751 | && !strcmp(pModule->szName, pszModule))
|
---|
752 | {
|
---|
753 | RTUINTPTR Value;
|
---|
754 | int rc = RTLdrGetSymbolEx(pModule->hLdrMod, pModule->pvBits, pModule->ImageBase, pszSymbol, &Value);
|
---|
755 | if (VBOX_SUCCESS(rc))
|
---|
756 | {
|
---|
757 | *pGCPtrValue = (RTGCPTR)Value;
|
---|
758 | Assert(*pGCPtrValue == Value);
|
---|
759 | }
|
---|
760 | else
|
---|
761 | {
|
---|
762 | if (pszSymbol < (const char*)(void*)0x10000)
|
---|
763 | AssertMsg(rc, ("Couldn't symbol '%u' in module '%s'\n", (unsigned)(uintptr_t)pszSymbol, pszModule));
|
---|
764 | else
|
---|
765 | AssertMsg(rc, ("Couldn't symbol '%s' in module '%s'\n", pszSymbol, pszModule));
|
---|
766 | }
|
---|
767 | return rc;
|
---|
768 | }
|
---|
769 | }
|
---|
770 |
|
---|
771 | AssertMsgFailed(("Couldn't locate module '%s'\n", pszModule));
|
---|
772 | return VERR_SYMBOL_NOT_FOUND;
|
---|
773 | #endif
|
---|
774 | }
|
---|
775 |
|
---|
776 |
|
---|
777 | /**
|
---|
778 | * Same as PDMR3GetSymbolGC except that the module will be attempted loaded if not found.
|
---|
779 | *
|
---|
780 | * @returns VBox status code.
|
---|
781 | * @param pVM VM handle.
|
---|
782 | * @param pszModule Module name. If NULL the main R0 module (VMMGC.gc) is assumes.
|
---|
783 | * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
|
---|
784 | * ordinal value rather than a string pointer.
|
---|
785 | * @param pGCPtrValue Where to store the symbol value.
|
---|
786 | */
|
---|
787 | PDMR3DECL(int) PDMR3GetSymbolGCLazy(PVM pVM, const char *pszModule, const char *pszSymbol, PRTGCPTR pGCPtrValue)
|
---|
788 | {
|
---|
789 | #ifdef PDMLDR_FAKE_MODE
|
---|
790 | *pGCPtrValue = 0xfeedf00d;
|
---|
791 | return VINF_SUCCESS;
|
---|
792 |
|
---|
793 | #else
|
---|
794 | /*
|
---|
795 | * Since we're lazy, we'll only check if the module is present
|
---|
796 | * and hand it over to PDMR3GetSymbolGC when that's done.
|
---|
797 | */
|
---|
798 | AssertMsg(pVM->pdm.s.offVM, ("bad init order!\n"));
|
---|
799 | if (pszModule)
|
---|
800 | {
|
---|
801 | AssertMsgReturn(!strpbrk(pszModule, "/\\:\n\r\t"), ("pszModule=%s\n", pszModule), VERR_INVALID_PARAMETER);
|
---|
802 | PPDMMOD pModule;
|
---|
803 | for (pModule = pVM->pdm.s.pModules; pModule; pModule = pModule->pNext)
|
---|
804 | if ( pModule->eType == PDMMOD_TYPE_GC
|
---|
805 | && !strcmp(pModule->szName, pszModule))
|
---|
806 | break;
|
---|
807 | if (!pModule)
|
---|
808 | {
|
---|
809 | char *pszFilename = pdmR3FileGC(pszModule);
|
---|
810 | AssertMsgReturn(pszFilename, ("pszModule=%s\n", pszModule), VERR_MODULE_NOT_FOUND);
|
---|
811 | int rc = PDMR3LoadGC(pVM, pszFilename, pszModule);
|
---|
812 | RTMemTmpFree(pszFilename);
|
---|
813 | AssertMsgRCReturn(rc, ("pszModule=%s rc=%Vrc\n", pszModule, rc), VERR_MODULE_NOT_FOUND);
|
---|
814 | }
|
---|
815 | }
|
---|
816 | return PDMR3GetSymbolGC(pVM, pszModule, pszSymbol, pGCPtrValue);
|
---|
817 | #endif
|
---|
818 | }
|
---|
819 |
|
---|
820 |
|
---|
821 | /**
|
---|
822 | * Constructs the full filename for a R3 image file.
|
---|
823 | *
|
---|
824 | * @returns Pointer to temporary memory containing the filename.
|
---|
825 | * Caller must free this using RTMemTmpFree().
|
---|
826 | * @returns NULL on failure.
|
---|
827 | * @param pszFile File name (no path).
|
---|
828 | * @todo We'll have this elsewhere than in the root later!
|
---|
829 | */
|
---|
830 | char *pdmR3FileR3(const char *pszFile)
|
---|
831 | {
|
---|
832 | return pdmR3File(pszFile, NULL);
|
---|
833 | }
|
---|
834 |
|
---|
835 |
|
---|
836 | /**
|
---|
837 | * Constructs the full filename for a R0 image file.
|
---|
838 | *
|
---|
839 | * @returns Pointer to temporary memory containing the filename.
|
---|
840 | * Caller must free this using RTMemTmpFree().
|
---|
841 | * @returns NULL on failure.
|
---|
842 | * @param pszFile File name (no path).
|
---|
843 | * @todo We'll have this elsewhere than in the root later!
|
---|
844 | */
|
---|
845 | char * pdmR3FileR0(const char *pszFile)
|
---|
846 | {
|
---|
847 | return pdmR3File(pszFile, NULL);
|
---|
848 | }
|
---|
849 |
|
---|
850 |
|
---|
851 | /**
|
---|
852 | * Constructs the full filename for a GC image file.
|
---|
853 | *
|
---|
854 | * @returns Pointer to temporary memory containing the filename.
|
---|
855 | * Caller must free this using RTMemTmpFree().
|
---|
856 | * @returns NULL on failure.
|
---|
857 | * @param pszFile File name (no path).
|
---|
858 | * @todo We'll have this elsewhere than in the root later!
|
---|
859 | */
|
---|
860 | char * pdmR3FileGC(const char *pszFile)
|
---|
861 | {
|
---|
862 | return pdmR3File(pszFile, NULL);
|
---|
863 | }
|
---|
864 |
|
---|
865 |
|
---|
866 | /**
|
---|
867 | * Worker for pdmR3FileGC() and pdmR3FileHC().
|
---|
868 | *
|
---|
869 | * @returns Pointer to temporary memory containing the filename.
|
---|
870 | * Caller must free this using RTMemTmpFree().
|
---|
871 | * @returns NULL on failure.
|
---|
872 | * @param pszFile File name (no path).
|
---|
873 | * @param pszDefaultExt The default extention, NULL if none.
|
---|
874 | * @todo We'll have this elsewhere than in the root later!
|
---|
875 | */
|
---|
876 | static char * pdmR3File(const char *pszFile, const char *pszDefaultExt)
|
---|
877 | {
|
---|
878 | /*
|
---|
879 | * Default extention?
|
---|
880 | */
|
---|
881 | unsigned cchDefaultExt;
|
---|
882 | if (!pszDefaultExt || strchr(pszFile, '.'))
|
---|
883 | cchDefaultExt = 0;
|
---|
884 | else
|
---|
885 | cchDefaultExt = strlen(pszDefaultExt);
|
---|
886 |
|
---|
887 | /*
|
---|
888 | * Query program path.
|
---|
889 | */
|
---|
890 | unsigned cchFile = strlen(pszFile);
|
---|
891 | char szPath[RTPATH_MAX];
|
---|
892 | int rc = RTPathProgram(szPath, sizeof(szPath) - cchFile - cchDefaultExt - 1);
|
---|
893 | if (!VBOX_SUCCESS(rc))
|
---|
894 | {
|
---|
895 | AssertMsgFailed(("RTPathProgram(,%d) failed rc=%d!\n", sizeof(szPath), rc));
|
---|
896 | return NULL;
|
---|
897 | }
|
---|
898 |
|
---|
899 | /*
|
---|
900 | * Allocate temp memory for return buffer.
|
---|
901 | */
|
---|
902 | unsigned cch = strlen(szPath);
|
---|
903 | char *pszRet = (char *)RTMemTmpAlloc(cch + 1 + cchFile + cchDefaultExt + 1);
|
---|
904 | if (!pszRet)
|
---|
905 | {
|
---|
906 | AssertMsgFailed(("Out of temporary memory!\n"));
|
---|
907 | return NULL;
|
---|
908 | }
|
---|
909 |
|
---|
910 | /*
|
---|
911 | * Construct the filename.
|
---|
912 | */
|
---|
913 | memcpy(pszRet, szPath, cch);
|
---|
914 | pszRet[cch++] = '/'; /* this works everywhere */
|
---|
915 | memcpy(pszRet + cch, pszFile, cchFile + 1);
|
---|
916 | if (cchDefaultExt)
|
---|
917 | memcpy(pszRet + cch + cchFile, pszDefaultExt, cchDefaultExt + 1);
|
---|
918 | return pszRet;
|
---|
919 | }
|
---|
920 |
|
---|
921 |
|
---|
922 | /** @internal */
|
---|
923 | typedef struct QMFEIPARG
|
---|
924 | {
|
---|
925 | uint32_t uEIP;
|
---|
926 |
|
---|
927 | char *pszNearSym1;
|
---|
928 | unsigned cchNearSym1;
|
---|
929 | RTINTPTR offNearSym1;
|
---|
930 |
|
---|
931 | char *pszNearSym2;
|
---|
932 | unsigned cchNearSym2;
|
---|
933 | RTINTPTR offNearSym2;
|
---|
934 | } QMFEIPARG, *PQMFEIPARG;
|
---|
935 |
|
---|
936 | /**
|
---|
937 | * Queries module information from an EIP.
|
---|
938 | *
|
---|
939 | * This is typically used to locate a crash address.
|
---|
940 | *
|
---|
941 | * @returns VBox status code.
|
---|
942 | * @param pVM VM handle
|
---|
943 | * @param uEIP EIP to locate.
|
---|
944 | * @param pszModName Where to store the module name.
|
---|
945 | * @param cchModName Size of the module name buffer.
|
---|
946 | * @param pMod Base address of the module.
|
---|
947 | * @param pszNearSym1 Name of the closes symbol from below.
|
---|
948 | * @param cchNearSym1 Size of the buffer pointed to by pszNearSym1.
|
---|
949 | * @param pNearSym1 The address of pszNearSym1.
|
---|
950 | * @param pszNearSym2 Name of the closes symbol from below.
|
---|
951 | * @param cchNearSym2 Size of the buffer pointed to by pszNearSym2.
|
---|
952 | * @param pNearSym2 The address of pszNearSym2.
|
---|
953 | */
|
---|
954 | PDMR3DECL(int) PDMR3QueryModFromEIP(PVM pVM, uint32_t uEIP,
|
---|
955 | char *pszModName, unsigned cchModName, RTGCPTR *pMod,
|
---|
956 | char *pszNearSym1, unsigned cchNearSym1, RTGCPTR *pNearSym1,
|
---|
957 | char *pszNearSym2, unsigned cchNearSym2, RTGCPTR *pNearSym2)
|
---|
958 | {
|
---|
959 | int rc = VERR_MODULE_NOT_FOUND;
|
---|
960 | PPDMMOD pCur;
|
---|
961 | for (pCur = pVM->pdm.s.pModules; pCur; pCur = pCur->pNext)
|
---|
962 | {
|
---|
963 | /* Skip anything which isn't in GC. */
|
---|
964 | if (pCur->eType != PDMMOD_TYPE_GC)
|
---|
965 | continue;
|
---|
966 | if ((RTUINTPTR)uEIP - pCur->ImageBase < RTLdrSize(pCur->hLdrMod))
|
---|
967 | {
|
---|
968 | if (pMod)
|
---|
969 | *pMod = pCur->ImageBase;
|
---|
970 | if (pszModName && cchModName)
|
---|
971 | {
|
---|
972 | *pszModName = '\0';
|
---|
973 | strncat(pszModName, pCur->szName, cchModName);
|
---|
974 | }
|
---|
975 | if (pNearSym1) *pNearSym1 = 0;
|
---|
976 | if (pNearSym2) *pNearSym2 = 0;
|
---|
977 | if (pszNearSym1) *pszNearSym1 = '\0';
|
---|
978 | if (pszNearSym2) *pszNearSym2 = '\0';
|
---|
979 |
|
---|
980 | /*
|
---|
981 | * Locate the nearest symbols.
|
---|
982 | */
|
---|
983 | QMFEIPARG Args;
|
---|
984 | Args.uEIP = uEIP;
|
---|
985 | Args.pszNearSym1 = pszNearSym1;
|
---|
986 | Args.cchNearSym1 = cchNearSym1;
|
---|
987 | Args.offNearSym1 = INT_MIN; /** @todo fix INT_MIN/MAX! */
|
---|
988 | Args.pszNearSym2 = pszNearSym2;
|
---|
989 | Args.cchNearSym2 = cchNearSym2;
|
---|
990 | Args.offNearSym2 = INT_MAX;
|
---|
991 |
|
---|
992 | rc = RTLdrEnumSymbols(pCur->hLdrMod, RTLDR_ENUM_SYMBOL_FLAGS_ALL, pCur->pvBits, pCur->ImageBase,
|
---|
993 | pdmR3QueryModFromEIPEnumSymbols, &Args);
|
---|
994 | if (pNearSym1 && Args.offNearSym1 != INT_MIN)
|
---|
995 | *pNearSym1 = Args.offNearSym1 + uEIP;
|
---|
996 | if (pNearSym2 && Args.offNearSym2 != INT_MAX)
|
---|
997 | *pNearSym2 = Args.offNearSym2 + uEIP;
|
---|
998 |
|
---|
999 | rc = VINF_SUCCESS;
|
---|
1000 | if (pCur->eType == PDMMOD_TYPE_GC)
|
---|
1001 | break;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | }
|
---|
1005 | return rc;
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 |
|
---|
1009 | /**
|
---|
1010 | * Enumeration callback function used by RTLdrEnumSymbols().
|
---|
1011 | *
|
---|
1012 | * @returns VBox status code. Failure will stop the enumeration.
|
---|
1013 | * @param hLdrMod The loader module handle.
|
---|
1014 | * @param pszSymbol Symbol name. NULL if ordinal only.
|
---|
1015 | * @param uSymbol Symbol ordinal, ~0 if not used.
|
---|
1016 | * @param Value Symbol value.
|
---|
1017 | * @param pvUser The user argument specified to RTLdrEnumSymbols().
|
---|
1018 | */
|
---|
1019 | static DECLCALLBACK(int) pdmR3QueryModFromEIPEnumSymbols(RTLDRMOD hLdrMod, const char *pszSymbol, unsigned uSymbol, RTUINTPTR Value, void *pvUser)
|
---|
1020 | {
|
---|
1021 | PQMFEIPARG pArgs = (PQMFEIPARG)pvUser;
|
---|
1022 |
|
---|
1023 | RTINTPTR off = Value - pArgs->uEIP;
|
---|
1024 | if (off <= 0) /* near1 is before or at same location. */
|
---|
1025 | {
|
---|
1026 | if (off > pArgs->offNearSym1)
|
---|
1027 | {
|
---|
1028 | pArgs->offNearSym1 = off;
|
---|
1029 | if (pArgs->pszNearSym1 && pArgs->cchNearSym1)
|
---|
1030 | {
|
---|
1031 | *pArgs->pszNearSym1 = '\0';
|
---|
1032 | if (pszSymbol)
|
---|
1033 | strncat(pArgs->pszNearSym1, pszSymbol, pArgs->cchNearSym1);
|
---|
1034 | else
|
---|
1035 | {
|
---|
1036 | char szOrd[32];
|
---|
1037 | RTStrPrintf(szOrd, sizeof(szOrd), "#%#x", uSymbol);
|
---|
1038 | strncat(pArgs->pszNearSym1, szOrd, pArgs->cchNearSym1);
|
---|
1039 | }
|
---|
1040 | }
|
---|
1041 | }
|
---|
1042 | }
|
---|
1043 | else /* near2 is after */
|
---|
1044 | {
|
---|
1045 | if (off < pArgs->offNearSym2)
|
---|
1046 | {
|
---|
1047 | pArgs->offNearSym2 = off;
|
---|
1048 | if (pArgs->pszNearSym2 && pArgs->cchNearSym2)
|
---|
1049 | {
|
---|
1050 | *pArgs->pszNearSym2 = '\0';
|
---|
1051 | if (pszSymbol)
|
---|
1052 | strncat(pArgs->pszNearSym2, pszSymbol, pArgs->cchNearSym2);
|
---|
1053 | else
|
---|
1054 | {
|
---|
1055 | char szOrd[32];
|
---|
1056 | RTStrPrintf(szOrd, sizeof(szOrd), "#%#x", uSymbol);
|
---|
1057 | strncat(pArgs->pszNearSym2, szOrd, pArgs->cchNearSym2);
|
---|
1058 | }
|
---|
1059 | }
|
---|
1060 | }
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | return VINF_SUCCESS;
|
---|
1064 | }
|
---|
1065 |
|
---|
1066 |
|
---|
1067 | /**
|
---|
1068 | * Enumerate all PDM modules.
|
---|
1069 | *
|
---|
1070 | * @returns VBox status.
|
---|
1071 | * @param pVM VM Handle.
|
---|
1072 | * @param pfnCallback Function to call back for each of the modules.
|
---|
1073 | * @param pvArg User argument.
|
---|
1074 | */
|
---|
1075 | PDMR3DECL(int) PDMR3EnumModules(PVM pVM, PFNPDMR3ENUM pfnCallback, void *pvArg)
|
---|
1076 | {
|
---|
1077 | PPDMMOD pCur;
|
---|
1078 | for (pCur = pVM->pdm.s.pModules; pCur; pCur = pCur->pNext)
|
---|
1079 | {
|
---|
1080 | int rc = pfnCallback(pVM,
|
---|
1081 | pCur->szFilename,
|
---|
1082 | pCur->szName,
|
---|
1083 | pCur->ImageBase,
|
---|
1084 | pCur->eType == PDMMOD_TYPE_GC ? RTLdrSize(pCur->hLdrMod) : 0,
|
---|
1085 | pCur->eType == PDMMOD_TYPE_GC);
|
---|
1086 | if (VBOX_FAILURE(rc))
|
---|
1087 | return rc;
|
---|
1088 | }
|
---|
1089 | return VINF_SUCCESS;
|
---|
1090 | }
|
---|
1091 |
|
---|