SELMGC.cpp@ 25046

Last change on this file since 25046 was 19141, checked in by vboxsync, 16 years ago
Action flags breakup. Fixed PGM saved state loading of 2.2.2 images. Reduced hacks in PATM state loading (fixups).
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 19.8 KB

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1	/* $Id: SELMGC.cpp 19141 2009-04-23 13:52:18Z vboxsync $ */
2	/** @file
3	* SELM - The Selector Manager, Guest Context.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_SELM
26	#include <VBox/selm.h>
27	#include <VBox/mm.h>
28	#include <VBox/em.h>
29	#include <VBox/trpm.h>
30	#include "SELMInternal.h"
31	#include <VBox/vm.h>
32	#include <VBox/vmm.h>
33	#include <VBox/pgm.h>
34
35	#include <VBox/param.h>
36	#include <VBox/err.h>
37	#include <VBox/log.h>
38	#include <iprt/assert.h>
39	#include <iprt/asm.h>
40
41
42	/**
43	* Synchronizes one GDT entry (guest -> shadow).
44	*
45	* @returns VBox status code (appropriate for trap handling and GC return).
46	* @param pVM VM Handle.
47	* @param pRegFrame Trap register frame.
48	* @param iGDTEntry The GDT entry to sync.
49	*/
50	static int selmGCSyncGDTEntry(PVM pVM, PCPUMCTXCORE pRegFrame, unsigned iGDTEntry)
51	{
52	PVMCPU pVCpu = VMMGetCpu0(pVM);
53
54	Log2(("GDT %04X LDTR=%04X\n", iGDTEntry, CPUMGetGuestLDTR(pVCpu)));
55
56	/*
57	* Validate the offset.
58	*/
59	VBOXGDTR GdtrGuest;
60	CPUMGetGuestGDTR(pVCpu, &GdtrGuest);
61	unsigned offEntry = iGDTEntry * sizeof(X86DESC);
62	if ( iGDTEntry >= SELM_GDT_ELEMENTS
63	\|\| offEntry > GdtrGuest.cbGdt)
64	return VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT;
65
66	/*
67	* Read the guest descriptor.
68	*/
69	X86DESC Desc;
70	int rc = MMGCRamRead(pVM, &Desc, (uint8_t *)GdtrGuest.pGdt + offEntry, sizeof(X86DESC));
71	if (RT_FAILURE(rc))
72	return VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT;
73
74	/*
75	* Check for conflicts.
76	*/
77	RTSEL Sel = iGDTEntry << X86_SEL_SHIFT;
78	Assert( !(pVM->selm.s.aHyperSel[SELM_HYPER_SEL_CS] & ~X86_SEL_MASK)
79	&& !(pVM->selm.s.aHyperSel[SELM_HYPER_SEL_DS] & ~X86_SEL_MASK)
80	&& !(pVM->selm.s.aHyperSel[SELM_HYPER_SEL_CS64] & ~X86_SEL_MASK)
81	&& !(pVM->selm.s.aHyperSel[SELM_HYPER_SEL_TSS] & ~X86_SEL_MASK)
82	&& !(pVM->selm.s.aHyperSel[SELM_HYPER_SEL_TSS_TRAP08] & ~X86_SEL_MASK));
83	if ( pVM->selm.s.aHyperSel[SELM_HYPER_SEL_CS] == Sel
84	\|\| pVM->selm.s.aHyperSel[SELM_HYPER_SEL_DS] == Sel
85	\|\| pVM->selm.s.aHyperSel[SELM_HYPER_SEL_CS64] == Sel
86	\|\| pVM->selm.s.aHyperSel[SELM_HYPER_SEL_TSS] == Sel
87	\|\| pVM->selm.s.aHyperSel[SELM_HYPER_SEL_TSS_TRAP08] == Sel)
88	{
89	if (Desc.Gen.u1Present)
90	{
91	Log(("selmGCSyncGDTEntry: Sel=%d Desc=%.8Rhxs: detected conflict!!\n", Sel, &Desc));
92	return VINF_SELM_SYNC_GDT;
93	}
94	Log(("selmGCSyncGDTEntry: Sel=%d Desc=%.8Rhxs: potential conflict (still not present)!\n", Sel, &Desc));
95
96	/* Note: we can't continue below or else we'll change the shadow descriptor!! */
97	/* When the guest makes the selector present, then we'll do a GDT sync. */
98	return VINF_SUCCESS;
99	}
100
101	/*
102	* Code and data selectors are generally 1:1, with the
103	* 'little' adjustment we do for DPL 0 selectors.
104	*/
105	PX86DESC pShadowDescr = &pVM->selm.s.paGdtRC[iGDTEntry];
106	if (Desc.Gen.u1DescType)
107	{
108	/*
109	* Hack for A-bit against Trap E on read-only GDT.
110	*/
111	/** @todo Fix this by loading ds and cs before turning off WP. */
112	Desc.Gen.u4Type \|= X86_SEL_TYPE_ACCESSED;
113
114	/*
115	* All DPL 0 code and data segments are squeezed into DPL 1.
116	*
117	* We're skipping conforming segments here because those
118	* cannot give us any trouble.
119	*/
120	if ( Desc.Gen.u2Dpl == 0
121	&& (Desc.Gen.u4Type & (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_CONF))
122	!= (X86_SEL_TYPE_CODE \| X86_SEL_TYPE_CONF) )
123	Desc.Gen.u2Dpl = 1;
124	}
125	else
126	{
127	/*
128	* System type selectors are marked not present.
129	* Recompiler or special handling is required for these.
130	*/
131	/** @todo what about interrupt gates and rawr0? */
132	Desc.Gen.u1Present = 0;
133	}
134	//Log(("O: base=%08X limit=%08X attr=%04X\n", X86DESC_BASE(pShadowDescr)), X86DESC_LIMIT(pShadowDescr), (pShadowDescr->au32[1] >> 8) & 0xFFFF ));
135	//Log(("N: base=%08X limit=%08X attr=%04X\n", X86DESC_BASE(Desc)), X86DESC_LIMIT(Desc), (Desc.au32[1] >> 8) & 0xFFFF ));
136	*pShadowDescr = Desc;
137
138	/* Check if we change the LDT selector */
139	if (Sel == CPUMGetGuestLDTR(pVCpu)) /** @todo this isn't correct in two(+) ways! 1. It shouldn't be done until the LDTR is reloaded. 2. It caused the next instruction to be emulated. */
140	{
141	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_LDT);
142	return VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT;
143	}
144
145	#ifdef LOG_ENABLED
146	if (Sel == (pRegFrame->cs & X86_SEL_MASK))
147	Log(("GDT write to selector in CS register %04X\n", pRegFrame->cs));
148	else if (Sel == (pRegFrame->ds & X86_SEL_MASK))
149	Log(("GDT write to selector in DS register %04X\n", pRegFrame->ds));
150	else if (Sel == (pRegFrame->es & X86_SEL_MASK))
151	Log(("GDT write to selector in ES register %04X\n", pRegFrame->es));
152	else if (Sel == (pRegFrame->fs & X86_SEL_MASK))
153	Log(("GDT write to selector in FS register %04X\n", pRegFrame->fs));
154	else if (Sel == (pRegFrame->gs & X86_SEL_MASK))
155	Log(("GDT write to selector in GS register %04X\n", pRegFrame->gs));
156	else if (Sel == (pRegFrame->ss & X86_SEL_MASK))
157	Log(("GDT write to selector in SS register %04X\n", pRegFrame->ss));
158	#endif
159	return VINF_SUCCESS;
160	}
161
162
163	/**
164	* \#PF Virtual Handler callback for Guest write access to the Guest's own GDT.
165	*
166	* @returns VBox status code (appropriate for trap handling and GC return).
167	* @param pVM VM Handle.
168	* @param uErrorCode CPU Error code.
169	* @param pRegFrame Trap register frame.
170	* @param pvFault The fault address (cr2).
171	* @param pvRange The base address of the handled virtual range.
172	* @param offRange The offset of the access into this range.
173	* (If it's a EIP range this's the EIP, if not it's pvFault.)
174	*/
175	VMMRCDECL(int) selmRCGuestGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
176	{
177	PVMCPU pVCpu = VMMGetCpu0(pVM);
178
179	LogFlow(("selmRCGuestGDTWriteHandler errcode=%x fault=%RGv offRange=%08x\n", (uint32_t)uErrorCode, pvFault, offRange));
180
181	/*
182	* First check if this is the LDT entry.
183	* LDT updates are problemous since an invalid LDT entry will cause trouble during worldswitch.
184	*/
185	int rc;
186	if (CPUMGetGuestLDTR(pVCpu) / sizeof(X86DESC) == offRange / sizeof(X86DESC))
187	{
188	Log(("LDTR selector change -> fall back to HC!!\n"));
189	rc = VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT;
190	/** @todo We're not handling changed to the selectors in LDTR and TR correctly at all.
191	* We should ignore any changes to those and sync them only when they are loaded by the guest! */
192	}
193	else
194	{
195	/*
196	* Attempt to emulate the instruction and sync the affected entries.
197	*/
198	/** @todo should check if any affected selectors are loaded. */
199	uint32_t cb;
200	rc = EMInterpretInstruction(pVM, pVCpu, pRegFrame, (RTGCPTR)(RTRCUINTPTR)pvFault, &cb);
201	if (RT_SUCCESS(rc) && cb)
202	{
203	unsigned iGDTE1 = offRange / sizeof(X86DESC);
204	int rc2 = selmGCSyncGDTEntry(pVM, pRegFrame, iGDTE1);
205	if (rc2 == VINF_SUCCESS)
206	{
207	Assert(cb);
208	unsigned iGDTE2 = (offRange + cb - 1) / sizeof(X86DESC);
209	if (iGDTE1 != iGDTE2)
210	rc2 = selmGCSyncGDTEntry(pVM, pRegFrame, iGDTE2);
211	if (rc2 == VINF_SUCCESS)
212	{
213	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestGDTHandled);
214	return rc;
215	}
216	}
217	if (rc == VINF_SUCCESS \|\| RT_FAILURE(rc2))
218	rc = rc2;
219	}
220	else
221	{
222	Assert(RT_FAILURE(rc));
223	if (rc == VERR_EM_INTERPRETER)
224	rc = VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT;
225	}
226	}
227	if ( rc != VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT
228	&& rc != VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT)
229	{
230	/* Not necessary when we need to go back to the host context to sync the LDT or TSS. */
231	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_GDT);
232	}
233	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestGDTUnhandled);
234	return rc;
235	}
236
237
238	/**
239	* \#PF Virtual Handler callback for Guest write access to the Guest's own LDT.
240	*
241	* @returns VBox status code (appropriate for trap handling and GC return).
242	* @param pVM VM Handle.
243	* @param uErrorCode CPU Error code.
244	* @param pRegFrame Trap register frame.
245	* @param pvFault The fault address (cr2).
246	* @param pvRange The base address of the handled virtual range.
247	* @param offRange The offset of the access into this range.
248	* (If it's a EIP range this's the EIP, if not it's pvFault.)
249	*/
250	VMMRCDECL(int) selmRCGuestLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
251	{
252	/** @todo To be implemented. */
253	////LogCom(("selmRCGuestLDTWriteHandler: eip=%08X pvFault=%RGv pvRange=%RGv\r\n", pRegFrame->eip, pvFault, pvRange));
254
255	VMCPU_FF_SET(VMMGetCpu0(pVM), VMCPU_FF_SELM_SYNC_LDT);
256	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestLDT);
257	return VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT;
258	}
259
260
261	/**
262	* Read wrapper used by selmRCGuestTSSWriteHandler.
263	* @returns VBox status code (appropriate for trap handling and GC return).
264	* @param pVM The VM handle
265	* @param pvDst Where to put the bits we read.
266	* @param pvSrc Guest address to read from.
267	* @param cb The number of bytes to read.
268	*/
269	DECLINLINE(int) selmRCReadTssBits(PVM pVM, void pvDst, void const pvSrc, size_t cb)
270	{
271	PVMCPU pVCpu = VMMGetCpu0(pVM);
272
273	int rc = MMGCRamRead(pVM, pvDst, (void *)pvSrc, cb);
274	if (RT_SUCCESS(rc))
275	return VINF_SUCCESS;
276
277	/** @todo use different fallback? */
278	rc = PGMPrefetchPage(pVCpu, (uintptr_t)pvSrc);
279	AssertMsg(rc == VINF_SUCCESS, ("PGMPrefetchPage %p failed with %Rrc\n", &pvSrc, rc));
280	if (rc == VINF_SUCCESS)
281	{
282	rc = MMGCRamRead(pVM, pvDst, (void *)pvSrc, cb);
283	AssertMsg(rc == VINF_SUCCESS, ("MMGCRamRead %p failed with %Rrc\n", &pvSrc, rc));
284	}
285	return rc;
286	}
287
288	/**
289	* \#PF Virtual Handler callback for Guest write access to the Guest's own current TSS.
290	*
291	* @returns VBox status code (appropriate for trap handling and GC return).
292	* @param pVM VM Handle.
293	* @param uErrorCode CPU Error code.
294	* @param pRegFrame Trap register frame.
295	* @param pvFault The fault address (cr2).
296	* @param pvRange The base address of the handled virtual range.
297	* @param offRange The offset of the access into this range.
298	* (If it's a EIP range this's the EIP, if not it's pvFault.)
299	*/
300	VMMRCDECL(int) selmRCGuestTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
301	{
302	PVMCPU pVCpu = VMMGetCpu0(pVM);
303
304	LogFlow(("selmRCGuestTSSWriteHandler errcode=%x fault=%RGv offRange=%08x\n", (uint32_t)uErrorCode, pvFault, offRange));
305
306	/*
307	* Try emulate the access.
308	*/
309	uint32_t cb;
310	int rc = EMInterpretInstruction(pVM, pVCpu, pRegFrame, (RTGCPTR)(RTRCUINTPTR)pvFault, &cb);
311	if (RT_SUCCESS(rc) && cb)
312	{
313	rc = VINF_SUCCESS;
314
315	/*
316	* If it's on the same page as the esp0 and ss0 fields or actually one of them,
317	* then check if any of these has changed.
318	*/
319	PCVBOXTSS pGuestTss = (PVBOXTSS)pVM->selm.s.GCPtrGuestTss;
320	if ( PAGE_ADDRESS(&pGuestTss->esp0) == PAGE_ADDRESS(&pGuestTss->padding_ss0)
321	&& PAGE_ADDRESS(&pGuestTss->esp0) == PAGE_ADDRESS((uint8_t *)pGuestTss + offRange)
322	&& ( pGuestTss->esp0 != pVM->selm.s.Tss.esp1
323	\|\| pGuestTss->ss0 != (pVM->selm.s.Tss.ss1 & ~1)) /* undo raw-r0 */
324	)
325	{
326	Log(("selmRCGuestTSSWriteHandler: R0 stack: %RTsel:%RGv -> %RTsel:%RGv\n",
327	(RTSEL)(pVM->selm.s.Tss.ss1 & ~1), (RTGCPTR)pVM->selm.s.Tss.esp1, (RTSEL)pGuestTss->ss0, (RTGCPTR)pGuestTss->esp0));
328	pVM->selm.s.Tss.esp1 = pGuestTss->esp0;
329	pVM->selm.s.Tss.ss1 = pGuestTss->ss0 \| 1;
330	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestTSSHandledChanged);
331	}
332	/* Handle misaligned TSS in a safe manner (just in case). */
333	else if ( offRange >= RT_UOFFSETOF(VBOXTSS, esp0)
334	&& offRange < RT_UOFFSETOF(VBOXTSS, padding_ss0))
335	{
336	struct
337	{
338	uint32_t esp0;
339	uint16_t ss0;
340	uint16_t padding_ss0;
341	} s;
342	AssertCompileSize(s, 8);
343	rc = selmRCReadTssBits(pVM, &s, &pGuestTss->esp0, sizeof(s));
344	if ( rc == VINF_SUCCESS
345	&& ( s.esp0 != pVM->selm.s.Tss.esp1
346	\|\| s.ss0 != (pVM->selm.s.Tss.ss1 & ~1)) /* undo raw-r0 */
347	)
348	{
349	Log(("selmRCGuestTSSWriteHandler: R0 stack: %RTsel:%RGv -> %RTsel:%RGv [x-page]\n",
350	(RTSEL)(pVM->selm.s.Tss.ss1 & ~1), (RTGCPTR)pVM->selm.s.Tss.esp1, (RTSEL)s.ss0, (RTGCPTR)s.esp0));
351	pVM->selm.s.Tss.esp1 = s.esp0;
352	pVM->selm.s.Tss.ss1 = s.ss0 \| 1;
353	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestTSSHandledChanged);
354	}
355	}
356
357	/*
358	* If VME is enabled we need to check if the interrupt redirection bitmap
359	* needs updating.
360	*/
361	if ( offRange >= RT_UOFFSETOF(VBOXTSS, offIoBitmap)
362	&& (CPUMGetGuestCR4(pVCpu) & X86_CR4_VME))
363	{
364	if (offRange - RT_UOFFSETOF(VBOXTSS, offIoBitmap) < sizeof(pGuestTss->offIoBitmap))
365	{
366	uint16_t offIoBitmap = pGuestTss->offIoBitmap;
367	if (offIoBitmap != pVM->selm.s.offGuestIoBitmap)
368	{
369	Log(("TSS offIoBitmap changed: old=%#x new=%#x -> resync in ring-3\n", pVM->selm.s.offGuestIoBitmap, offIoBitmap));
370	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
371	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
372	}
373	else
374	Log(("TSS offIoBitmap: old=%#x new=%#x [unchanged]\n", pVM->selm.s.offGuestIoBitmap, offIoBitmap));
375	}
376	else
377	{
378	/** @todo not sure how the partial case is handled; probably not allowed */
379	uint32_t offIntRedirBitmap = pVM->selm.s.offGuestIoBitmap - sizeof(pVM->selm.s.Tss.IntRedirBitmap);
380	if ( offIntRedirBitmap <= offRange
381	&& offIntRedirBitmap + sizeof(pVM->selm.s.Tss.IntRedirBitmap) >= offRange + cb
382	&& offIntRedirBitmap + sizeof(pVM->selm.s.Tss.IntRedirBitmap) <= pVM->selm.s.cbGuestTss)
383	{
384	Log(("TSS IntRedirBitmap Changed: offIoBitmap=%x offIntRedirBitmap=%x cbTSS=%x offRange=%x cb=%x\n",
385	pVM->selm.s.offGuestIoBitmap, offIntRedirBitmap, pVM->selm.s.cbGuestTss, offRange, cb));
386
387	/** @todo only update the changed part. */
388	for (uint32_t i = 0; i < sizeof(pVM->selm.s.Tss.IntRedirBitmap) / 8; i++)
389	{
390	rc = selmRCReadTssBits(pVM, &pVM->selm.s.Tss.IntRedirBitmap[i * 8],
391	(uint8_t )pGuestTss + offIntRedirBitmap + i 8, 8);
392	if (rc != VINF_SUCCESS)
393	break;
394	}
395	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestTSSRedir);
396	}
397	}
398	}
399
400	/* Return to ring-3 for a full resync if any of the above fails... (?) */
401	if (rc != VINF_SUCCESS)
402	{
403	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
404	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
405	if (RT_SUCCESS(rc))
406	rc = VINF_SUCCESS;
407	}
408
409	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestTSSHandled);
410	}
411	else
412	{
413	Assert(RT_FAILURE(rc));
414	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
415	STAM_COUNTER_INC(&pVM->selm.s.StatRCWriteGuestTSSUnhandled);
416	if (rc == VERR_EM_INTERPRETER)
417	rc = VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT;
418	}
419	return rc;
420	}
421
422
423	/**
424	* \#PF Virtual Handler callback for Guest write access to the VBox shadow GDT.
425	*
426	* @returns VBox status code (appropriate for trap handling and GC return).
427	* @param pVM VM Handle.
428	* @param uErrorCode CPU Error code.
429	* @param pRegFrame Trap register frame.
430	* @param pvFault The fault address (cr2).
431	* @param pvRange The base address of the handled virtual range.
432	* @param offRange The offset of the access into this range.
433	* (If it's a EIP range this's the EIP, if not it's pvFault.)
434	*/
435	VMMRCDECL(int) selmRCShadowGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
436	{
437	LogRel(("FATAL ERROR: selmRCShadowGDTWriteHandler: eip=%08X pvFault=%RGv pvRange=%RGv\r\n", pRegFrame->eip, pvFault, pvRange));
438	return VERR_SELM_SHADOW_GDT_WRITE;
439	}
440
441
442	/**
443	* \#PF Virtual Handler callback for Guest write access to the VBox shadow LDT.
444	*
445	* @returns VBox status code (appropriate for trap handling and GC return).
446	* @param pVM VM Handle.
447	* @param uErrorCode CPU Error code.
448	* @param pRegFrame Trap register frame.
449	* @param pvFault The fault address (cr2).
450	* @param pvRange The base address of the handled virtual range.
451	* @param offRange The offset of the access into this range.
452	* (If it's a EIP range this's the EIP, if not it's pvFault.)
453	*/
454	VMMRCDECL(int) selmRCShadowLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
455	{
456	LogRel(("FATAL ERROR: selmRCShadowLDTWriteHandler: eip=%08X pvFault=%RGv pvRange=%RGv\r\n", pRegFrame->eip, pvFault, pvRange));
457	Assert((RTRCPTR)pvFault >= pVM->selm.s.pvLdtRC && (RTRCUINTPTR)pvFault < (RTRCUINTPTR)pVM->selm.s.pvLdtRC + 65536 + PAGE_SIZE);
458	return VERR_SELM_SHADOW_LDT_WRITE;
459	}
460
461
462	/**
463	* \#PF Virtual Handler callback for Guest write access to the VBox shadow TSS.
464	*
465	* @returns VBox status code (appropriate for trap handling and GC return).
466	* @param pVM VM Handle.
467	* @param uErrorCode CPU Error code.
468	* @param pRegFrame Trap register frame.
469	* @param pvFault The fault address (cr2).
470	* @param pvRange The base address of the handled virtual range.
471	* @param offRange The offset of the access into this range.
472	* (If it's a EIP range this's the EIP, if not it's pvFault.)
473	*/
474	VMMRCDECL(int) selmRCShadowTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange)
475	{
476	LogRel(("FATAL ERROR: selmRCShadowTSSWriteHandler: eip=%08X pvFault=%RGv pvRange=%RGv\r\n", pRegFrame->eip, pvFault, pvRange));
477	return VERR_SELM_SHADOW_TSS_WRITE;
478	}
479

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source: vbox/trunk/src/VBox/VMM/VMMGC/SELMGC.cpp@ 25046

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