PGMGC.cpp@ 7821

Last change on this file since 7821 was 7748, checked in by vboxsync, 17 years ago
Removed invalid paging combinations
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 11.3 KB

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1	/* $Id: PGMGC.cpp 7748 2008-04-04 15:42:30Z vboxsync $ */
2	/** @file
3	* PGM - Page Monitor, Guest Context.
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 (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_PGM
23	#include <VBox/pgm.h>
24	#include <VBox/cpum.h>
25	#include <VBox/mm.h>
26	#include <VBox/em.h>
27	#include <VBox/selm.h>
28	#include <VBox/iom.h>
29	#include <VBox/trpm.h>
30	#include <VBox/rem.h>
31	#include "PGMInternal.h"
32	#include <VBox/vm.h>
33
34	#include <iprt/asm.h>
35	#include <iprt/assert.h>
36	#include <VBox/log.h>
37	#include <VBox/param.h>
38	#include <VBox/err.h>
39	#include <VBox/dis.h>
40	#include <VBox/disopcode.h>
41
42
43
44	/*******************************************************************************
45	* Internal Functions *
46	*******************************************************************************/
47
48
49
50	#ifndef RT_ARCH_AMD64
51	/*
52	* Shadow - 32-bit mode
53	*/
54	#define PGM_SHW_TYPE PGM_TYPE_32BIT
55	#define PGM_SHW_NAME(name) PGM_SHW_NAME_32BIT(name)
56	#include "PGMGCShw.h"
57
58	/* Guest - real mode */
59	#define PGM_GST_TYPE PGM_TYPE_REAL
60	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
61	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_REAL(name)
62	#include "PGMGCGst.h"
63	#include "PGMGCBth.h"
64	#undef PGM_BTH_NAME
65	#undef PGM_GST_TYPE
66	#undef PGM_GST_NAME
67
68	/* Guest - protected mode */
69	#define PGM_GST_TYPE PGM_TYPE_PROT
70	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
71	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_PROT(name)
72	#include "PGMGCGst.h"
73	#include "PGMGCBth.h"
74	#undef PGM_BTH_NAME
75	#undef PGM_GST_TYPE
76	#undef PGM_GST_NAME
77
78	/* Guest - 32-bit mode */
79	#define PGM_GST_TYPE PGM_TYPE_32BIT
80	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
81	#define PGM_BTH_NAME(name) PGM_BTH_NAME_32BIT_32BIT(name)
82	#include "PGMGCGst.h"
83	#include "PGMGCBth.h"
84	#undef PGM_BTH_NAME
85	#undef PGM_GST_TYPE
86	#undef PGM_GST_NAME
87
88	#undef PGM_SHW_TYPE
89	#undef PGM_SHW_NAME
90	#endif /* !RT_ARCH_AMD64 */
91
92
93	/*
94	* Shadow - PAE mode
95	*/
96	#define PGM_SHW_TYPE PGM_TYPE_PAE
97	#define PGM_SHW_NAME(name) PGM_SHW_NAME_PAE(name)
98	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
99	#include "PGMGCShw.h"
100
101	/* Guest - real mode */
102	#define PGM_GST_TYPE PGM_TYPE_REAL
103	#define PGM_GST_NAME(name) PGM_GST_NAME_REAL(name)
104	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_REAL(name)
105	#include "PGMGCBth.h"
106	#undef PGM_BTH_NAME
107	#undef PGM_GST_TYPE
108	#undef PGM_GST_NAME
109
110	/* Guest - protected mode */
111	#define PGM_GST_TYPE PGM_TYPE_PROT
112	#define PGM_GST_NAME(name) PGM_GST_NAME_PROT(name)
113	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PROT(name)
114	#include "PGMGCBth.h"
115	#undef PGM_BTH_NAME
116	#undef PGM_GST_TYPE
117	#undef PGM_GST_NAME
118
119	/* Guest - 32-bit mode */
120	#define PGM_GST_TYPE PGM_TYPE_32BIT
121	#define PGM_GST_NAME(name) PGM_GST_NAME_32BIT(name)
122	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_32BIT(name)
123	#include "PGMGCBth.h"
124	#undef PGM_BTH_NAME
125	#undef PGM_GST_TYPE
126	#undef PGM_GST_NAME
127
128	/* Guest - PAE mode */
129	#define PGM_GST_TYPE PGM_TYPE_PAE
130	#define PGM_GST_NAME(name) PGM_GST_NAME_PAE(name)
131	#define PGM_BTH_NAME(name) PGM_BTH_NAME_PAE_PAE(name)
132	#include "PGMGCGst.h"
133	#include "PGMGCBth.h"
134	#undef PGM_BTH_NAME
135	#undef PGM_GST_TYPE
136	#undef PGM_GST_NAME
137
138	#undef PGM_SHW_TYPE
139	#undef PGM_SHW_NAME
140
141
142	/*
143	* Shadow - AMD64 mode
144	*/
145	#define PGM_SHW_TYPE PGM_TYPE_AMD64
146	#define PGM_SHW_NAME(name) PGM_SHW_NAME_AMD64(name)
147	#include "PGMGCShw.h"
148
149	/* Guest - AMD64 mode */
150	#define PGM_GST_TYPE PGM_TYPE_AMD64
151	#define PGM_GST_NAME(name) PGM_GST_NAME_AMD64(name)
152	#define PGM_BTH_NAME(name) PGM_BTH_NAME_AMD64_AMD64(name)
153	#include "PGMGCGst.h"
154	#include "PGMGCBth.h"
155	#undef PGM_BTH_NAME
156	#undef PGM_GST_TYPE
157	#undef PGM_GST_NAME
158
159	#undef PGM_SHW_TYPE
160	#undef PGM_SHW_NAME
161
162
163	/**
164	* Temporarily maps one guest page specified by GC physical address.
165	* These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
166	*
167	* Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
168	* reused after 8 mappings (or perhaps a few more if you score with the cache).
169	*
170	* @returns VBox status.
171	* @param pVM VM handle.
172	* @param GCPhys GC Physical address of the page.
173	* @param ppv Where to store the address of the mapping.
174	*/
175	PGMGCDECL(int) PGMGCDynMapGCPage(PVM pVM, RTGCPHYS GCPhys, void **ppv)
176	{
177	AssertMsg(!(GCPhys & PAGE_OFFSET_MASK), ("GCPhys=%VGp\n", GCPhys));
178
179	/*
180	* Get the ram range.
181	*/
182	PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesGC;
183	while (pRam && GCPhys - pRam->GCPhys >= pRam->cb)
184	pRam = pRam->pNextGC;
185	if (!pRam)
186	{
187	AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys));
188	return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS;
189	}
190
191	/*
192	* Pass it on to PGMGCDynMapHCPage.
193	*/
194	RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
195	//Log(("PGMGCDynMapGCPage: GCPhys=%VGp HCPhys=%VHp\n", GCPhys, HCPhys));
196	return PGMGCDynMapHCPage(pVM, HCPhys, ppv);
197	}
198
199
200	/**
201	* Temporarily maps one guest page specified by unaligned GC physical address.
202	* These pages must have a physical mapping in HC, i.e. they cannot be MMIO pages.
203	*
204	* Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
205	* reused after 8 mappings (or perhaps a few more if you score with the cache).
206	*
207	* The caller is aware that only the speicifed page is mapped and that really bad things
208	* will happen if writing beyond the page!
209	*
210	* @returns VBox status.
211	* @param pVM VM handle.
212	* @param GCPhys GC Physical address within the page to be mapped.
213	* @param ppv Where to store the address of the mapping address corresponding to GCPhys.
214	*/
215	PGMGCDECL(int) PGMGCDynMapGCPageEx(PVM pVM, RTGCPHYS GCPhys, void **ppv)
216	{
217	/*
218	* Get the ram range.
219	*/
220	PPGMRAMRANGE pRam = pVM->pgm.s.pRamRangesGC;
221	while (pRam && GCPhys - pRam->GCPhys >= pRam->cb)
222	pRam = pRam->pNextGC;
223	if (!pRam)
224	{
225	AssertMsgFailed(("Invalid physical address %VGp!\n", GCPhys));
226	return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS;
227	}
228
229	/*
230	* Pass it on to PGMGCDynMapHCPage.
231	*/
232	RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[(GCPhys - pRam->GCPhys) >> PAGE_SHIFT]);
233	int rc = PGMGCDynMapHCPage(pVM, HCPhys, ppv);
234	if (VBOX_SUCCESS(rc))
235	ppv = (void )((uintptr_t)*ppv \| (GCPhys & PAGE_OFFSET_MASK));
236	return rc;
237	}
238
239
240	/**
241	* Temporarily maps one host page specified by HC physical address.
242	*
243	* Be WARNED that the dynamic page mapping area is small, 8 pages, thus the space is
244	* reused after 8 mappings (or perhaps a few more if you score with the cache).
245	*
246	* @returns VBox status.
247	* @param pVM VM handle.
248	* @param HCPhys HC Physical address of the page.
249	* @param ppv Where to store the address of the mapping.
250	*/
251	PGMGCDECL(int) PGMGCDynMapHCPage(PVM pVM, RTHCPHYS HCPhys, void **ppv)
252	{
253	AssertMsg(!(HCPhys & PAGE_OFFSET_MASK), ("HCPhys=%VHp\n", HCPhys));
254
255	/*
256	* Check the cache.
257	*/
258	register unsigned iCache;
259	if ( pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 0] == HCPhys
260	\|\| pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 1] == HCPhys
261	\|\| pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 2] == HCPhys
262	\|\| pVM->pgm.s.aHCPhysDynPageMapCache[iCache = 3] == HCPhys)
263	{
264	static const uint8_t au8Trans[MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT][ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache)] =
265	{
266	{ 0, 5, 6, 7 },
267	{ 0, 1, 6, 7 },
268	{ 0, 1, 2, 7 },
269	{ 0, 1, 2, 3 },
270	{ 4, 1, 2, 3 },
271	{ 4, 5, 2, 3 },
272	{ 4, 5, 6, 3 },
273	{ 4, 5, 6, 7 },
274	};
275	Assert(ELEMENTS(au8Trans) == 8);
276	Assert(ELEMENTS(au8Trans[0]) == 4);
277	int iPage = au8Trans[pVM->pgm.s.iDynPageMapLast][iCache];
278	void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
279	*ppv = pv;
280	STAM_COUNTER_INC(&pVM->pgm.s.StatDynMapCacheHits);
281	//Log(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d iCache=%d\n", HCPhys, pv, iPage, iCache));
282	return VINF_SUCCESS;
283	}
284	Assert(ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) == 4);
285	STAM_COUNTER_INC(&pVM->pgm.s.StatDynMapCacheMisses);
286
287	/*
288	* Update the page tables.
289	*/
290	register unsigned iPage = pVM->pgm.s.iDynPageMapLast;
291	pVM->pgm.s.iDynPageMapLast = iPage = (iPage + 1) & ((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) - 1);
292	Assert((MM_HYPER_DYNAMIC_SIZE >> PAGE_SHIFT) == 8);
293
294	pVM->pgm.s.aHCPhysDynPageMapCache[iPage & (ELEMENTS(pVM->pgm.s.aHCPhysDynPageMapCache) - 1)] = HCPhys;
295	pVM->pgm.s.paDynPageMap32BitPTEsGC[iPage].u = (uint32_t)HCPhys \| X86_PTE_P \| X86_PTE_A \| X86_PTE_D;
296	pVM->pgm.s.paDynPageMapPaePTEsGC[iPage].u = HCPhys \| X86_PTE_P \| X86_PTE_A \| X86_PTE_D;
297
298	void *pv = pVM->pgm.s.pbDynPageMapBaseGC + (iPage << PAGE_SHIFT);
299	*ppv = pv;
300	ASMInvalidatePage(pv);
301	Log4(("PGMGCDynMapHCPage: HCPhys=%VHp pv=%VGv iPage=%d\n", HCPhys, pv, iPage));
302	return VINF_SUCCESS;
303	}
304
305
306	/**
307	* Emulation of the invlpg instruction.
308	*
309	* @returns VBox status code suitable for scheduling.
310	* @param pVM VM handle.
311	* @param GCPtrPage Page to invalidate.
312	*/
313	PGMGCDECL(int) PGMGCInvalidatePage(PVM pVM, RTGCPTR GCPtrPage)
314	{
315	LogFlow(("PGMGCInvalidatePage: GCPtrPage=%VGv\n", GCPtrPage));
316
317	STAM_PROFILE_START(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
318
319	/*
320	* Check for conflicts and pending CR3 monitoring updates.
321	*/
322	if (!pVM->pgm.s.fMappingsFixed)
323	{
324	if ( pgmGetMapping(pVM, GCPtrPage)
325	/** @todo && (PGMGstGetPDE(pVM, GCPtrPage) & X86_PDE_P) - FIX THIS NOW!!! */ )
326	{
327	LogFlow(("PGMGCInvalidatePage: Conflict!\n"));
328	VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3);
329	STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
330	return VINF_PGM_SYNC_CR3;
331	}
332
333	if (pVM->pgm.s.fSyncFlags & PGM_SYNC_MONITOR_CR3)
334	{
335	LogFlow(("PGMGCInvalidatePage: PGM_SYNC_MONITOR_CR3 -> reinterpret instruction in HC\n"));
336	STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
337	/** @todo counter for these... */
338	return VINF_EM_RAW_EMULATE_INSTR;
339	}
340	}
341
342	/*
343	* Notify the recompiler so it can record this instruction.
344	* Failure happens when it's out of space. We'll return to HC in that case.
345	*/
346	int rc = REMNotifyInvalidatePage(pVM, GCPtrPage);
347	if (rc == VINF_SUCCESS)
348	rc = PGM_BTH_PFN(InvalidatePage, pVM)(pVM, GCPtrPage);
349
350	STAM_PROFILE_STOP(&CTXMID(pVM->pgm.s.Stat,InvalidatePage), a);
351	return rc;
352	}

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source: vbox/trunk/src/VBox/VMM/VMMGC/PGMGC.cpp@ 7821

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