VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMAll/MMAll.cpp@ 31996

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1/* $Id: MMAll.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
2/** @file
3 * MM - Memory Manager - Any Context.
4 */
5
6/*
7 * Copyright (C) 2006-2007 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/*******************************************************************************
20* Header Files *
21*******************************************************************************/
22#define LOG_GROUP LOG_GROUP_MM_HYPER
23#include <VBox/mm.h>
24#include <VBox/vmm.h>
25#include "MMInternal.h"
26#include <VBox/vm.h>
27#include <VBox/log.h>
28#include <iprt/assert.h>
29#include <iprt/string.h>
30
31
32
33/**
34 * Lookup a host context ring-3 address.
35 *
36 * @returns Pointer to the corresponding lookup record.
37 * @returns NULL on failure.
38 * @param pVM The VM handle.
39 * @param R3Ptr The host context ring-3 address to lookup.
40 * @param poff Where to store the offset into the HMA memory chunk.
41 */
42DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupR3(PVM pVM, RTR3PTR R3Ptr, uint32_t *poff)
43{
44 /** @todo cache last lookup, this stuff ain't cheap! */
45 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper);
46 for (;;)
47 {
48 switch (pLookup->enmType)
49 {
50 case MMLOOKUPHYPERTYPE_LOCKED:
51 {
52 const RTR3UINTPTR off = (RTR3UINTPTR)R3Ptr - (RTR3UINTPTR)pLookup->u.Locked.pvR3;
53 if (off < pLookup->cb)
54 {
55 *poff = off;
56 return pLookup;
57 }
58 break;
59 }
60
61 case MMLOOKUPHYPERTYPE_HCPHYS:
62 {
63 const RTR3UINTPTR off = (RTR3UINTPTR)R3Ptr - (RTR3UINTPTR)pLookup->u.HCPhys.pvR3;
64 if (off < pLookup->cb)
65 {
66 *poff = off;
67 return pLookup;
68 }
69 break;
70 }
71
72 case MMLOOKUPHYPERTYPE_GCPHYS: /* (for now we'll not allow these kind of conversions) */
73 case MMLOOKUPHYPERTYPE_MMIO2:
74 case MMLOOKUPHYPERTYPE_DYNAMIC:
75 break;
76
77 default:
78 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
79 break;
80 }
81
82 /* next */
83 if (pLookup->offNext == (int32_t)NIL_OFFSET)
84 break;
85 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
86 }
87
88 AssertMsgFailed(("R3Ptr=%RHv is not inside the hypervisor memory area!\n", R3Ptr));
89 return NULL;
90}
91
92
93/**
94 * Lookup a host context ring-0 address.
95 *
96 * @returns Pointer to the corresponding lookup record.
97 * @returns NULL on failure.
98 * @param pVM The VM handle.
99 * @param R0Ptr The host context ring-0 address to lookup.
100 * @param poff Where to store the offset into the HMA memory chunk.
101 */
102DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupR0(PVM pVM, RTR0PTR R0Ptr, uint32_t *poff)
103{
104 AssertCompile(sizeof(RTR0PTR) == sizeof(RTR3PTR));
105
106 /** @todo cache last lookup, this stuff ain't cheap! */
107 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper);
108 for (;;)
109 {
110 switch (pLookup->enmType)
111 {
112 case MMLOOKUPHYPERTYPE_LOCKED:
113 {
114 const RTR0UINTPTR off = (RTR0UINTPTR)R0Ptr - (RTR0UINTPTR)pLookup->u.Locked.pvR0;
115 if (off < pLookup->cb && pLookup->u.Locked.pvR0)
116 {
117 *poff = off;
118 return pLookup;
119 }
120 break;
121 }
122
123 case MMLOOKUPHYPERTYPE_HCPHYS:
124 {
125 const RTR0UINTPTR off = (RTR0UINTPTR)R0Ptr - (RTR0UINTPTR)pLookup->u.HCPhys.pvR0;
126 if (off < pLookup->cb && pLookup->u.HCPhys.pvR0)
127 {
128 *poff = off;
129 return pLookup;
130 }
131 break;
132 }
133
134 case MMLOOKUPHYPERTYPE_GCPHYS: /* (for now we'll not allow these kind of conversions) */
135 case MMLOOKUPHYPERTYPE_MMIO2:
136 case MMLOOKUPHYPERTYPE_DYNAMIC:
137 break;
138
139 default:
140 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
141 break;
142 }
143
144 /* next */
145 if (pLookup->offNext == (int32_t)NIL_OFFSET)
146 break;
147 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
148 }
149
150 AssertMsgFailed(("R0Ptr=%RHv is not inside the hypervisor memory area!\n", R0Ptr));
151 return NULL;
152}
153
154
155/**
156 * Lookup a raw-mode context address.
157 *
158 * @returns Pointer to the corresponding lookup record.
159 * @returns NULL on failure.
160 * @param pVM The VM handle.
161 * @param RCPtr The raw-mode context address to lookup.
162 * @param poff Where to store the offset into the HMA memory chunk.
163 */
164DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupRC(PVM pVM, RTRCPTR RCPtr, uint32_t *poff)
165{
166 /** @todo cache last lookup this stuff ain't cheap! */
167 unsigned offRC = (RTRCUINTPTR)RCPtr - (RTGCUINTPTR)pVM->mm.s.pvHyperAreaGC;
168 PMMLOOKUPHYPER pLookup = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper);
169 for (;;)
170 {
171 const uint32_t off = offRC - pLookup->off;
172 if (off < pLookup->cb)
173 {
174 switch (pLookup->enmType)
175 {
176 case MMLOOKUPHYPERTYPE_LOCKED:
177 case MMLOOKUPHYPERTYPE_HCPHYS:
178 *poff = off;
179 return pLookup;
180 default:
181 break;
182 }
183 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
184 *poff = 0; /* shut up gcc */
185 return NULL;
186 }
187
188 /* next */
189 if (pLookup->offNext == (int32_t)NIL_OFFSET)
190 break;
191 pLookup = (PMMLOOKUPHYPER)((uint8_t *)pLookup + pLookup->offNext);
192 }
193
194 AssertMsgFailed(("RCPtr=%RRv is not inside the hypervisor memory area!\n", RCPtr));
195 *poff = 0; /* shut up gcc */
196 return NULL;
197}
198
199
200/**
201 * Lookup a current context address.
202 *
203 * @returns Pointer to the corresponding lookup record.
204 * @returns NULL on failure.
205 * @param pVM The VM handle.
206 * @param pv The current context address to lookup.
207 * @param poff Where to store the offset into the HMA memory chunk.
208 */
209DECLINLINE(PMMLOOKUPHYPER) mmHyperLookupCC(PVM pVM, void *pv, uint32_t *poff)
210{
211#ifdef IN_RC
212 return mmHyperLookupRC(pVM, (RTRCPTR)pv, poff);
213#elif defined(IN_RING0)
214 return mmHyperLookupR0(pVM, pv, poff);
215#else
216 return mmHyperLookupR3(pVM, pv, poff);
217#endif
218}
219
220
221/**
222 * Calculate the host context ring-3 address of an offset into the HMA memory chunk.
223 *
224 * @returns the host context ring-3 address.
225 * @param pLookup The HMA lookup record.
226 * @param off The offset into the HMA memory chunk.
227 */
228DECLINLINE(RTR3PTR) mmHyperLookupCalcR3(PMMLOOKUPHYPER pLookup, uint32_t off)
229{
230 switch (pLookup->enmType)
231 {
232 case MMLOOKUPHYPERTYPE_LOCKED:
233 return (RTR3PTR)((RTR3UINTPTR)pLookup->u.Locked.pvR3 + off);
234 case MMLOOKUPHYPERTYPE_HCPHYS:
235 return (RTR3PTR)((RTR3UINTPTR)pLookup->u.HCPhys.pvR3 + off);
236 default:
237 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
238 return NIL_RTR3PTR;
239 }
240}
241
242
243/**
244 * Calculate the host context ring-0 address of an offset into the HMA memory chunk.
245 *
246 * @returns the host context ring-0 address.
247 * @param pVM Pointer to the shared VM structure.
248 * @param pLookup The HMA lookup record.
249 * @param off The offset into the HMA memory chunk.
250 */
251DECLINLINE(RTR0PTR) mmHyperLookupCalcR0(PVM pVM, PMMLOOKUPHYPER pLookup, uint32_t off)
252{
253 switch (pLookup->enmType)
254 {
255 case MMLOOKUPHYPERTYPE_LOCKED:
256 if (pLookup->u.Locked.pvR0)
257 return (RTR0PTR)((RTR0UINTPTR)pLookup->u.Locked.pvR0 + off);
258#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
259 AssertMsg(!VMMIsHwVirtExtForced(pVM), ("%s\n", R3STRING(pLookup->pszDesc)));
260#else
261 AssertMsgFailed(("%s\n", R3STRING(pLookup->pszDesc)));
262#endif
263 return NIL_RTR0PTR;
264
265 case MMLOOKUPHYPERTYPE_HCPHYS:
266 if (pLookup->u.HCPhys.pvR0)
267 return (RTR0PTR)((RTR0UINTPTR)pLookup->u.HCPhys.pvR0 + off);
268 AssertMsgFailed(("%s\n", R3STRING(pLookup->pszDesc)));
269 return NIL_RTR0PTR;
270
271 default:
272 AssertMsgFailed(("enmType=%d\n", pLookup->enmType));
273 return NIL_RTR0PTR;
274 }
275}
276
277
278/**
279 * Calculate the raw-mode context address of an offset into the HMA memory chunk.
280 *
281 * @returns the raw-mode context base address.
282 * @param pVM The the VM handle.
283 * @param pLookup The HMA lookup record.
284 * @param off The offset into the HMA memory chunk.
285 */
286DECLINLINE(RTRCPTR) mmHyperLookupCalcRC(PVM pVM, PMMLOOKUPHYPER pLookup, uint32_t off)
287{
288 return (RTRCPTR)((RTRCUINTPTR)pVM->mm.s.pvHyperAreaGC + pLookup->off + off);
289}
290
291
292/**
293 * Calculate the guest context address of an offset into the HMA memory chunk.
294 *
295 * @returns the guest context base address.
296 * @param pVM The the VM handle.
297 * @param pLookup The HMA lookup record.
298 * @param off The offset into the HMA memory chunk.
299 */
300DECLINLINE(void *) mmHyperLookupCalcCC(PVM pVM, PMMLOOKUPHYPER pLookup, uint32_t off)
301{
302#ifdef IN_RC
303 return (void *)mmHyperLookupCalcRC(pVM, pLookup, off);
304#elif defined(IN_RING0)
305 return mmHyperLookupCalcR0(pVM, pLookup, off);
306#else
307 return mmHyperLookupCalcR3(pLookup, off);
308#endif
309}
310
311
312/**
313 * Converts a ring-0 host context address in the Hypervisor memory region to a ring-3 host context address.
314 *
315 * @returns ring-3 host context address.
316 * @param pVM The VM to operate on.
317 * @param R0Ptr The ring-0 host context address.
318 * You'll be damned if this is not in the HMA! :-)
319 * @thread The Emulation Thread.
320 */
321VMMDECL(RTR3PTR) MMHyperR0ToR3(PVM pVM, RTR0PTR R0Ptr)
322{
323 uint32_t off;
324 PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off);
325 if (pLookup)
326 return mmHyperLookupCalcR3(pLookup, off);
327 return NIL_RTR3PTR;
328}
329
330
331/**
332 * Converts a ring-0 host context address in the Hypervisor memory region to a raw-mode context address.
333 *
334 * @returns raw-mode context address.
335 * @param pVM The VM to operate on.
336 * @param R0Ptr The ring-0 host context address.
337 * You'll be damned if this is not in the HMA! :-)
338 * @thread The Emulation Thread.
339 */
340VMMDECL(RTRCPTR) MMHyperR0ToRC(PVM pVM, RTR0PTR R0Ptr)
341{
342 uint32_t off;
343 PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off);
344 if (pLookup)
345 return mmHyperLookupCalcRC(pVM, pLookup, off);
346 return NIL_RTRCPTR;
347}
348
349
350#ifndef IN_RING0
351/**
352 * Converts a ring-0 host context address in the Hypervisor memory region to a current context address.
353 *
354 * @returns current context address.
355 * @param pVM The VM to operate on.
356 * @param R0Ptr The ring-0 host context address.
357 * You'll be damned if this is not in the HMA! :-)
358 * @thread The Emulation Thread.
359 */
360VMMDECL(void *) MMHyperR0ToCC(PVM pVM, RTR0PTR R0Ptr)
361{
362 uint32_t off;
363 PMMLOOKUPHYPER pLookup = mmHyperLookupR0(pVM, R0Ptr, &off);
364 if (pLookup)
365 return mmHyperLookupCalcCC(pVM, pLookup, off);
366 return NULL;
367}
368#endif
369
370
371/**
372 * Converts a ring-3 host context address in the Hypervisor memory region to a ring-0 host context address.
373 *
374 * @returns ring-0 host context address.
375 * @param pVM The VM to operate on.
376 * @param R3Ptr The ring-3 host context address.
377 * You'll be damned if this is not in the HMA! :-)
378 * @thread The Emulation Thread.
379 */
380VMMDECL(RTR0PTR) MMHyperR3ToR0(PVM pVM, RTR3PTR R3Ptr)
381{
382 uint32_t off;
383 PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off);
384 if (pLookup)
385 return mmHyperLookupCalcR0(pVM, pLookup, off);
386 AssertMsgFailed(("R3Ptr=%p is not inside the hypervisor memory area!\n", R3Ptr));
387 return NIL_RTR0PTR;
388}
389
390
391/**
392 * Converts a ring-3 host context address in the Hypervisor memory region to a guest context address.
393 *
394 * @returns guest context address.
395 * @param pVM The VM to operate on.
396 * @param R3Ptr The ring-3 host context address.
397 * You'll be damned if this is not in the HMA! :-)
398 * @thread The Emulation Thread.
399 */
400VMMDECL(RTRCPTR) MMHyperR3ToRC(PVM pVM, RTR3PTR R3Ptr)
401{
402 uint32_t off;
403 PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off);
404 if (pLookup)
405 return mmHyperLookupCalcRC(pVM, pLookup, off);
406 AssertMsgFailed(("R3Ptr=%p is not inside the hypervisor memory area!\n", R3Ptr));
407 return NIL_RTRCPTR;
408}
409
410
411#ifndef IN_RING3
412/**
413 * Converts a ring-3 host context address in the Hypervisor memory region to a current context address.
414 *
415 * @returns current context address.
416 * @param pVM The VM to operate on.
417 * @param R3Ptr The ring-3 host context address.
418 * You'll be damned if this is not in the HMA! :-)
419 * @thread The Emulation Thread.
420 */
421VMMDECL(void *) MMHyperR3ToCC(PVM pVM, RTR3PTR R3Ptr)
422{
423 uint32_t off;
424 PMMLOOKUPHYPER pLookup = mmHyperLookupR3(pVM, R3Ptr, &off);
425 if (pLookup)
426 return mmHyperLookupCalcCC(pVM, pLookup, off);
427 return NULL;
428}
429#endif
430
431
432/**
433 * Converts a raw-mode context address in the Hypervisor memory region to a ring-3 context address.
434 *
435 * @returns ring-3 host context address.
436 * @param pVM The VM to operate on.
437 * @param GCPtr The raw-mode context address.
438 * You'll be damned if this is not in the HMA! :-)
439 * @thread The Emulation Thread.
440 */
441VMMDECL(RTR3PTR) MMHyperRCToR3(PVM pVM, RTRCPTR RCPtr)
442{
443 uint32_t off;
444 PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off);
445 if (pLookup)
446 return mmHyperLookupCalcR3(pLookup, off);
447 return NIL_RTR3PTR;
448}
449
450
451/**
452 * Converts a raw-mode context address in the Hypervisor memory region to a ring-0 host context address.
453 *
454 * @returns ring-0 host context address.
455 * @param pVM The VM to operate on.
456 * @param RCPtr The raw-mode context address.
457 * You'll be damned if this is not in the HMA! :-)
458 * @thread The Emulation Thread.
459 */
460VMMDECL(RTR0PTR) MMHyperRCToR0(PVM pVM, RTRCPTR RCPtr)
461{
462 uint32_t off;
463 PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off);
464 if (pLookup)
465 return mmHyperLookupCalcR0(pVM, pLookup, off);
466 return NIL_RTR0PTR;
467}
468
469#ifndef IN_RC
470/**
471 * Converts a raw-mode context address in the Hypervisor memory region to a current context address.
472 *
473 * @returns current context address.
474 * @param pVM The VM to operate on.
475 * @param RCPtr The raw-mode host context address.
476 * You'll be damned if this is not in the HMA! :-)
477 * @thread The Emulation Thread.
478 */
479VMMDECL(void *) MMHyperRCToCC(PVM pVM, RTRCPTR RCPtr)
480{
481 uint32_t off;
482 PMMLOOKUPHYPER pLookup = mmHyperLookupRC(pVM, RCPtr, &off);
483 if (pLookup)
484 return mmHyperLookupCalcCC(pVM, pLookup, off);
485 return NULL;
486}
487#endif
488
489#ifndef IN_RING3
490/**
491 * Converts a current context address in the Hypervisor memory region to a ring-3 host context address.
492 *
493 * @returns ring-3 host context address.
494 * @param pVM The VM to operate on.
495 * @param pv The current context address.
496 * You'll be damned if this is not in the HMA! :-)
497 * @thread The Emulation Thread.
498 */
499VMMDECL(RTR3PTR) MMHyperCCToR3(PVM pVM, void *pv)
500{
501 uint32_t off;
502 PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off);
503 if (pLookup)
504 return mmHyperLookupCalcR3(pLookup, off);
505 return NIL_RTR3PTR;
506}
507#endif
508
509#ifndef IN_RING0
510/**
511 * Converts a current context address in the Hypervisor memory region to a ring-0 host context address.
512 *
513 * @returns ring-0 host context address.
514 * @param pVM The VM to operate on.
515 * @param pv The current context address.
516 * You'll be damned if this is not in the HMA! :-)
517 * @thread The Emulation Thread.
518 */
519VMMDECL(RTR0PTR) MMHyperCCToR0(PVM pVM, void *pv)
520{
521 uint32_t off;
522 PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off);
523 if (pLookup)
524 return mmHyperLookupCalcR0(pVM, pLookup, off);
525 return NIL_RTR0PTR;
526}
527#endif
528
529
530#ifndef IN_RC
531/**
532 * Converts a current context address in the Hypervisor memory region to a raw-mode context address.
533 *
534 * @returns guest context address.
535 * @param pVM The VM to operate on.
536 * @param pv The current context address.
537 * You'll be damned if this is not in the HMA! :-)
538 * @thread The Emulation Thread.
539 */
540VMMDECL(RTRCPTR) MMHyperCCToRC(PVM pVM, void *pv)
541{
542 uint32_t off;
543 PMMLOOKUPHYPER pLookup = mmHyperLookupCC(pVM, pv, &off);
544 if (pLookup)
545 return mmHyperLookupCalcRC(pVM, pLookup, off);
546 return NIL_RTRCPTR;
547}
548#endif
549
550
551/**
552 * Gets the string name of a memory tag.
553 *
554 * @returns name of enmTag.
555 * @param enmTag The tag.
556 */
557const char *mmGetTagName(MMTAG enmTag)
558{
559 switch (enmTag)
560 {
561 #define TAG2STR(tag) case MM_TAG_##tag: return #tag
562
563 TAG2STR(CFGM);
564 TAG2STR(CFGM_BYTES);
565 TAG2STR(CFGM_STRING);
566 TAG2STR(CFGM_USER);
567
568 TAG2STR(CSAM);
569 TAG2STR(CSAM_PATCH);
570
571 TAG2STR(DBGF);
572 TAG2STR(DBGF_AS);
573 TAG2STR(DBGF_INFO);
574 TAG2STR(DBGF_LINE);
575 TAG2STR(DBGF_LINE_DUP);
576 TAG2STR(DBGF_MODULE);
577 TAG2STR(DBGF_OS);
578 TAG2STR(DBGF_STACK);
579 TAG2STR(DBGF_SYMBOL);
580 TAG2STR(DBGF_SYMBOL_DUP);
581
582 TAG2STR(EM);
583
584 TAG2STR(IOM);
585 TAG2STR(IOM_STATS);
586
587 TAG2STR(MM);
588 TAG2STR(MM_LOOKUP_GUEST);
589 TAG2STR(MM_LOOKUP_PHYS);
590 TAG2STR(MM_LOOKUP_VIRT);
591 TAG2STR(MM_PAGE);
592
593 TAG2STR(PARAV);
594
595 TAG2STR(PATM);
596 TAG2STR(PATM_PATCH);
597
598 TAG2STR(PDM);
599 TAG2STR(PDM_DEVICE);
600 TAG2STR(PDM_DEVICE_DESC);
601 TAG2STR(PDM_DEVICE_USER);
602 TAG2STR(PDM_DRIVER);
603 TAG2STR(PDM_DRIVER_DESC);
604 TAG2STR(PDM_DRIVER_USER);
605 TAG2STR(PDM_USB);
606 TAG2STR(PDM_USB_DESC);
607 TAG2STR(PDM_USB_USER);
608 TAG2STR(PDM_LUN);
609 TAG2STR(PDM_QUEUE);
610 TAG2STR(PDM_THREAD);
611 TAG2STR(PDM_ASYNC_COMPLETION);
612
613 TAG2STR(PGM);
614 TAG2STR(PGM_CHUNK_MAPPING);
615 TAG2STR(PGM_HANDLERS);
616 TAG2STR(PGM_MAPPINGS);
617 TAG2STR(PGM_PHYS);
618 TAG2STR(PGM_POOL);
619
620 TAG2STR(REM);
621
622 TAG2STR(SELM);
623
624 TAG2STR(SSM);
625
626 TAG2STR(STAM);
627
628 TAG2STR(TM);
629
630 TAG2STR(TRPM);
631
632 TAG2STR(VM);
633 TAG2STR(VM_REQ);
634
635 TAG2STR(VMM);
636
637 TAG2STR(HWACCM);
638
639 #undef TAG2STR
640
641 default:
642 {
643 AssertMsgFailed(("Unknown tag %d! forgot to add it to the switch?\n", enmTag));
644#ifdef IN_RING3
645 static char sz[48];
646 RTStrPrintf(sz, sizeof(sz), "%d", enmTag);
647 return sz;
648#else
649 return "unknown tag!";
650#endif
651 }
652 }
653}
654
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