VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMR3/PATMSSM.cpp@ 49993

Last change on this file since 49993 was 49808, checked in by vboxsync, 11 years ago

PATMSSM.cpp: Don't try convert non-patch memory addresses to offsets. Dropped the conversion macros since they're only used in these one cases anyway.
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File size: 65.2 KB
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1/* $Id: PATMSSM.cpp 49808 2013-12-06 10:09:30Z vboxsync $ */
2/** @file
3 * PATMSSM - Dynamic Guest OS Patching Manager; Save and load state
4 *
5 * NOTE: CSAM assumes patch memory is never reused!!
6 */
7
8/*
9 * Copyright (C) 2006-2013 Oracle Corporation
10 *
11 * This file is part of VirtualBox Open Source Edition (OSE), as
12 * available from http://www.virtualbox.org. This file is free software;
13 * you can redistribute it and/or modify it under the terms of the GNU
14 * General Public License (GPL) as published by the Free Software
15 * Foundation, in version 2 as it comes in the "COPYING" file of the
16 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18 */
19
20/*******************************************************************************
21* Header Files *
22*******************************************************************************/
23#define LOG_GROUP LOG_GROUP_PATM
24#include <VBox/vmm/patm.h>
25#include <VBox/vmm/cpum.h>
26#include <VBox/vmm/cpumctx-v1_6.h>
27#include <VBox/vmm/mm.h>
28#include <VBox/vmm/ssm.h>
29#include <VBox/param.h>
30#include <iprt/avl.h>
31#include "PATMInternal.h"
32#include "PATMPatch.h"
33#include "PATMA.h"
34#include <VBox/vmm/vm.h>
35#include <VBox/vmm/csam.h>
36#include "internal/pgm.h"
37#include <VBox/dbg.h>
38#include <VBox/err.h>
39#include <VBox/log.h>
40#include <iprt/assert.h>
41#include <iprt/asm.h>
42#include <iprt/string.h>
43#include <VBox/dis.h>
44#include <VBox/disopcode.h>
45#include <VBox/version.h>
46
47/**
48 * Patch information - SSM version.
49 *
50 * the difference is the missing pTrampolinePatchesHead member
51 * to avoid changing the saved state version for now (will come later).
52 */
53typedef struct PATCHINFOSSM
54{
55 uint32_t uState;
56 uint32_t uOldState;
57 DISCPUMODE uOpMode;
58
59 /* GC pointer of privileged instruction */
60 RCPTRTYPE(uint8_t *) pPrivInstrGC;
61 R3PTRTYPE(uint8_t *) unusedHC; /* todo Can't remove due to structure size dependencies in saved states. */
62 uint8_t aPrivInstr[MAX_INSTR_SIZE];
63 uint32_t cbPrivInstr;
64 uint32_t opcode; //opcode for priv instr (OP_*)
65 uint32_t cbPatchJump; //patch jump size
66
67 /* Only valid for PATMFL_JUMP_CONFLICT patches */
68 RTRCPTR pPatchJumpDestGC;
69
70 RTGCUINTPTR32 pPatchBlockOffset;
71 uint32_t cbPatchBlockSize;
72 uint32_t uCurPatchOffset;
73#if HC_ARCH_BITS == 64
74 uint32_t Alignment0; /**< Align flags correctly. */
75#endif
76
77 uint64_t flags;
78
79 /**
80 * Lowest and highest patched GC instruction address. To optimize searches.
81 */
82 RTRCPTR pInstrGCLowest;
83 RTRCPTR pInstrGCHighest;
84
85 /* Tree of fixup records for the patch. */
86 R3PTRTYPE(PAVLPVNODECORE) FixupTree;
87 uint32_t nrFixups;
88
89 /* Tree of jumps inside the generated patch code. */
90 uint32_t nrJumpRecs;
91 R3PTRTYPE(PAVLPVNODECORE) JumpTree;
92
93 /**
94 * Lookup trees for determining the corresponding guest address of an
95 * instruction in the patch block.
96 */
97 R3PTRTYPE(PAVLU32NODECORE) Patch2GuestAddrTree;
98 R3PTRTYPE(PAVLU32NODECORE) Guest2PatchAddrTree;
99 uint32_t nrPatch2GuestRecs;
100#if HC_ARCH_BITS == 64
101 uint32_t Alignment1;
102#endif
103
104 /* Unused, but can't remove due to structure size dependencies in the saved state. */
105 PATMP2GLOOKUPREC_OBSOLETE unused;
106
107 /* Temporary information during patch creation. Don't waste hypervisor memory for this. */
108 R3PTRTYPE(PPATCHINFOTEMP) pTempInfo;
109
110 /* Count the number of writes to the corresponding guest code. */
111 uint32_t cCodeWrites;
112
113 /* Count the number of invalid writes to pages monitored for the patch. */
114 //some statistics to determine if we should keep this patch activated
115 uint32_t cTraps;
116
117 uint32_t cInvalidWrites;
118
119 // Index into the uPatchRun and uPatchTrap arrays (0..MAX_PATCHES-1)
120 uint32_t uPatchIdx;
121
122 /* First opcode byte, that's overwritten when a patch is marked dirty. */
123 uint8_t bDirtyOpcode;
124 uint8_t Alignment2[7]; /**< Align the structure size on a 8-byte boundary. */
125} PATCHINFOSSM, *PPATCHINFOSSM;
126
127/**
128 * Lookup record for patches - SSM version.
129 */
130typedef struct PATMPATCHRECSSM
131{
132 /** The key is a GC virtual address. */
133 AVLOU32NODECORE Core;
134 /** The key is a patch offset. */
135 AVLOU32NODECORE CoreOffset;
136
137 PATCHINFOSSM patch;
138} PATMPATCHRECSSM, *PPATMPATCHRECSSM;
139
140
141/*******************************************************************************
142* Internal Functions *
143*******************************************************************************/
144static void patmCorrectFixup(PVM pVM, unsigned ulSSMVersion, PATM &patmInfo, PPATCHINFO pPatch, PRELOCREC pRec, int32_t offset, RTRCPTR *pFixup);
145
146/*******************************************************************************
147* Global Variables *
148*******************************************************************************/
149/**
150 * SSM descriptor table for the PATM structure.
151 */
152static SSMFIELD const g_aPatmFields[] =
153{
154 /** @todo there are a bunch more fields here which can be marked as ignored. */
155 SSMFIELD_ENTRY_IGNORE( PATM, offVM),
156 SSMFIELD_ENTRY_RCPTR( PATM, pPatchMemGC),
157 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pPatchMemHC),
158 SSMFIELD_ENTRY( PATM, cbPatchMem),
159 SSMFIELD_ENTRY( PATM, offPatchMem),
160 SSMFIELD_ENTRY( PATM, fOutOfMemory),
161 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 3),
162 SSMFIELD_ENTRY( PATM, deltaReloc),
163 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGCStateHC),
164 SSMFIELD_ENTRY_RCPTR( PATM, pGCStateGC),
165 SSMFIELD_ENTRY_RCPTR( PATM, pGCStackGC),
166 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGCStackHC),
167 SSMFIELD_ENTRY_RCPTR( PATM, pCPUMCtxGC),
168 SSMFIELD_ENTRY_RCPTR( PATM, pStatsGC),
169 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pStatsHC),
170 SSMFIELD_ENTRY( PATM, uCurrentPatchIdx),
171 SSMFIELD_ENTRY( PATM, ulCallDepth),
172 SSMFIELD_ENTRY( PATM, cPageRecords),
173 SSMFIELD_ENTRY_RCPTR( PATM, pPatchedInstrGCLowest),
174 SSMFIELD_ENTRY_RCPTR( PATM, pPatchedInstrGCHighest),
175 SSMFIELD_ENTRY_RCPTR( PATM, PatchLookupTreeGC),
176 SSMFIELD_ENTRY_IGN_HCPTR( PATM, PatchLookupTreeHC),
177 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperCallGC),
178 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperRetGC),
179 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperJumpGC),
180 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperIretGC),
181 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGlobalPatchRec),
182 SSMFIELD_ENTRY_RCPTR( PATM, pfnSysEnterGC),
183 SSMFIELD_ENTRY_RCPTR( PATM, pfnSysEnterPatchGC),
184 SSMFIELD_ENTRY( PATM, uSysEnterPatchIdx),
185 SSMFIELD_ENTRY_RCPTR( PATM, pvFaultMonitor),
186 SSMFIELD_ENTRY_GCPHYS( PATM, mmio.GCPhys),
187 SSMFIELD_ENTRY_RCPTR( PATM, mmio.pCachedData),
188 SSMFIELD_ENTRY_IGN_RCPTR( PATM, mmio.Alignment0),
189 SSMFIELD_ENTRY_IGN_HCPTR( PATM, savedstate.pSSM),
190 SSMFIELD_ENTRY( PATM, savedstate.cPatches),
191 SSMFIELD_ENTRY_PAD_HC64( PATM, savedstate.Alignment0, sizeof(uint32_t)),
192 SSMFIELD_ENTRY_IGNORE( PATM, StatNrOpcodeRead),
193 SSMFIELD_ENTRY_IGNORE( PATM, StatDisabled),
194 SSMFIELD_ENTRY_IGNORE( PATM, StatUnusable),
195 SSMFIELD_ENTRY_IGNORE( PATM, StatEnabled),
196 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalled),
197 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledFunctionPatches),
198 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledTrampoline),
199 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledJump),
200 SSMFIELD_ENTRY_IGNORE( PATM, StatInt3Callable),
201 SSMFIELD_ENTRY_IGNORE( PATM, StatInt3BlockRun),
202 SSMFIELD_ENTRY_IGNORE( PATM, StatOverwritten),
203 SSMFIELD_ENTRY_IGNORE( PATM, StatFixedConflicts),
204 SSMFIELD_ENTRY_IGNORE( PATM, StatFlushed),
205 SSMFIELD_ENTRY_IGNORE( PATM, StatPageBoundaryCrossed),
206 SSMFIELD_ENTRY_IGNORE( PATM, StatMonitored),
207 SSMFIELD_ENTRY_IGNORE( PATM, StatHandleTrap),
208 SSMFIELD_ENTRY_IGNORE( PATM, StatSwitchBack),
209 SSMFIELD_ENTRY_IGNORE( PATM, StatSwitchBackFail),
210 SSMFIELD_ENTRY_IGNORE( PATM, StatPATMMemoryUsed),
211 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateREQSuccess),
212 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateREQFailed),
213 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateUseExisting),
214 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionFound),
215 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionNotFound),
216 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWrite),
217 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteDetect),
218 SSMFIELD_ENTRY_IGNORE( PATM, StatDirty),
219 SSMFIELD_ENTRY_IGNORE( PATM, StatPushTrap),
220 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteInterpreted),
221 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteInterpretedFailed),
222 SSMFIELD_ENTRY_IGNORE( PATM, StatSysEnter),
223 SSMFIELD_ENTRY_IGNORE( PATM, StatSysExit),
224 SSMFIELD_ENTRY_IGNORE( PATM, StatEmulIret),
225 SSMFIELD_ENTRY_IGNORE( PATM, StatEmulIretFailed),
226 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirty),
227 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirtyGood),
228 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirtyBad),
229 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchPageInserted),
230 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchPageRemoved),
231 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchRefreshSuccess),
232 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchRefreshFailed),
233 SSMFIELD_ENTRY_IGNORE( PATM, StatGenRet),
234 SSMFIELD_ENTRY_IGNORE( PATM, StatGenRetReused),
235 SSMFIELD_ENTRY_IGNORE( PATM, StatGenJump),
236 SSMFIELD_ENTRY_IGNORE( PATM, StatGenCall),
237 SSMFIELD_ENTRY_IGNORE( PATM, StatGenPopf),
238 SSMFIELD_ENTRY_IGNORE( PATM, StatCheckPendingIRQ),
239 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionLookupReplace),
240 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionLookupInsert),
241 SSMFIELD_ENTRY_IGNORE( PATM, StatU32FunctionMaxSlotsUsed),
242 SSMFIELD_ENTRY_IGNORE( PATM, Alignment0),
243 SSMFIELD_ENTRY_TERM()
244};
245
246/**
247 * SSM descriptor table for the PATM structure starting with r86139.
248 */
249static SSMFIELD const g_aPatmFields86139[] =
250{
251 /** @todo there are a bunch more fields here which can be marked as ignored. */
252 SSMFIELD_ENTRY_IGNORE( PATM, offVM),
253 SSMFIELD_ENTRY_RCPTR( PATM, pPatchMemGC),
254 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pPatchMemHC),
255 SSMFIELD_ENTRY( PATM, cbPatchMem),
256 SSMFIELD_ENTRY( PATM, offPatchMem),
257 SSMFIELD_ENTRY( PATM, fOutOfMemory),
258 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 3),
259 SSMFIELD_ENTRY( PATM, deltaReloc),
260 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGCStateHC),
261 SSMFIELD_ENTRY_RCPTR( PATM, pGCStateGC),
262 SSMFIELD_ENTRY_RCPTR( PATM, pGCStackGC),
263 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGCStackHC),
264 SSMFIELD_ENTRY_RCPTR( PATM, pCPUMCtxGC),
265 SSMFIELD_ENTRY_RCPTR( PATM, pStatsGC),
266 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pStatsHC),
267 SSMFIELD_ENTRY( PATM, uCurrentPatchIdx),
268 SSMFIELD_ENTRY( PATM, ulCallDepth),
269 SSMFIELD_ENTRY( PATM, cPageRecords),
270 SSMFIELD_ENTRY_RCPTR( PATM, pPatchedInstrGCLowest),
271 SSMFIELD_ENTRY_RCPTR( PATM, pPatchedInstrGCHighest),
272 SSMFIELD_ENTRY_RCPTR( PATM, PatchLookupTreeGC),
273 SSMFIELD_ENTRY_IGN_HCPTR( PATM, PatchLookupTreeHC),
274 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperCallGC),
275 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperRetGC),
276 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperJumpGC),
277 SSMFIELD_ENTRY_RCPTR( PATM, pfnHelperIretGC),
278 SSMFIELD_ENTRY_IGN_HCPTR( PATM, pGlobalPatchRec),
279 SSMFIELD_ENTRY_RCPTR( PATM, pfnSysEnterGC),
280 SSMFIELD_ENTRY_RCPTR( PATM, pfnSysEnterPatchGC),
281 SSMFIELD_ENTRY( PATM, uSysEnterPatchIdx),
282 SSMFIELD_ENTRY_RCPTR( PATM, pvFaultMonitor),
283 SSMFIELD_ENTRY_GCPHYS( PATM, mmio.GCPhys),
284 SSMFIELD_ENTRY_RCPTR( PATM, mmio.pCachedData),
285 SSMFIELD_ENTRY_IGN_RCPTR( PATM, mmio.Alignment0),
286 SSMFIELD_ENTRY_IGN_HCPTR( PATM, savedstate.pSSM),
287 SSMFIELD_ENTRY( PATM, savedstate.cPatches),
288 SSMFIELD_ENTRY_PAD_HC64( PATM, savedstate.Alignment0, sizeof(uint32_t)),
289 SSMFIELD_ENTRY_IGN_HCPTR( PATM, hDbgModPatchMem),
290 SSMFIELD_ENTRY_PAD_HC32( PATM, Alignment0, sizeof(uint32_t)),
291 SSMFIELD_ENTRY_IGNORE( PATM, StatNrOpcodeRead),
292 SSMFIELD_ENTRY_IGNORE( PATM, StatDisabled),
293 SSMFIELD_ENTRY_IGNORE( PATM, StatUnusable),
294 SSMFIELD_ENTRY_IGNORE( PATM, StatEnabled),
295 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalled),
296 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledFunctionPatches),
297 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledTrampoline),
298 SSMFIELD_ENTRY_IGNORE( PATM, StatInstalledJump),
299 SSMFIELD_ENTRY_IGNORE( PATM, StatInt3Callable),
300 SSMFIELD_ENTRY_IGNORE( PATM, StatInt3BlockRun),
301 SSMFIELD_ENTRY_IGNORE( PATM, StatOverwritten),
302 SSMFIELD_ENTRY_IGNORE( PATM, StatFixedConflicts),
303 SSMFIELD_ENTRY_IGNORE( PATM, StatFlushed),
304 SSMFIELD_ENTRY_IGNORE( PATM, StatPageBoundaryCrossed),
305 SSMFIELD_ENTRY_IGNORE( PATM, StatMonitored),
306 SSMFIELD_ENTRY_IGNORE( PATM, StatHandleTrap),
307 SSMFIELD_ENTRY_IGNORE( PATM, StatSwitchBack),
308 SSMFIELD_ENTRY_IGNORE( PATM, StatSwitchBackFail),
309 SSMFIELD_ENTRY_IGNORE( PATM, StatPATMMemoryUsed),
310 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateREQSuccess),
311 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateREQFailed),
312 SSMFIELD_ENTRY_IGNORE( PATM, StatDuplicateUseExisting),
313 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionFound),
314 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionNotFound),
315 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWrite),
316 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteDetect),
317 SSMFIELD_ENTRY_IGNORE( PATM, StatDirty),
318 SSMFIELD_ENTRY_IGNORE( PATM, StatPushTrap),
319 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteInterpreted),
320 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchWriteInterpretedFailed),
321 SSMFIELD_ENTRY_IGNORE( PATM, StatSysEnter),
322 SSMFIELD_ENTRY_IGNORE( PATM, StatSysExit),
323 SSMFIELD_ENTRY_IGNORE( PATM, StatEmulIret),
324 SSMFIELD_ENTRY_IGNORE( PATM, StatEmulIretFailed),
325 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirty),
326 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirtyGood),
327 SSMFIELD_ENTRY_IGNORE( PATM, StatInstrDirtyBad),
328 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchPageInserted),
329 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchPageRemoved),
330 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchRefreshSuccess),
331 SSMFIELD_ENTRY_IGNORE( PATM, StatPatchRefreshFailed),
332 SSMFIELD_ENTRY_IGNORE( PATM, StatGenRet),
333 SSMFIELD_ENTRY_IGNORE( PATM, StatGenRetReused),
334 SSMFIELD_ENTRY_IGNORE( PATM, StatGenJump),
335 SSMFIELD_ENTRY_IGNORE( PATM, StatGenCall),
336 SSMFIELD_ENTRY_IGNORE( PATM, StatGenPopf),
337 SSMFIELD_ENTRY_IGNORE( PATM, StatCheckPendingIRQ),
338 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionLookupReplace),
339 SSMFIELD_ENTRY_IGNORE( PATM, StatFunctionLookupInsert),
340 SSMFIELD_ENTRY_IGNORE( PATM, StatU32FunctionMaxSlotsUsed),
341 SSMFIELD_ENTRY_IGNORE( PATM, Alignment0),
342 SSMFIELD_ENTRY_TERM()
343};
344
345/**
346 * SSM descriptor table for the PATMGCSTATE structure.
347 */
348static SSMFIELD const g_aPatmGCStateFields[] =
349{
350 SSMFIELD_ENTRY( PATMGCSTATE, uVMFlags),
351 SSMFIELD_ENTRY( PATMGCSTATE, uPendingAction),
352 SSMFIELD_ENTRY( PATMGCSTATE, uPatchCalls),
353 SSMFIELD_ENTRY( PATMGCSTATE, uScratch),
354 SSMFIELD_ENTRY( PATMGCSTATE, uIretEFlags),
355 SSMFIELD_ENTRY( PATMGCSTATE, uIretCS),
356 SSMFIELD_ENTRY( PATMGCSTATE, uIretEIP),
357 SSMFIELD_ENTRY( PATMGCSTATE, Psp),
358 SSMFIELD_ENTRY( PATMGCSTATE, fPIF),
359 SSMFIELD_ENTRY_RCPTR( PATMGCSTATE, GCPtrInhibitInterrupts),
360 SSMFIELD_ENTRY_RCPTR( PATMGCSTATE, GCCallPatchTargetAddr),
361 SSMFIELD_ENTRY_RCPTR( PATMGCSTATE, GCCallReturnAddr),
362 SSMFIELD_ENTRY( PATMGCSTATE, Restore.uEAX),
363 SSMFIELD_ENTRY( PATMGCSTATE, Restore.uECX),
364 SSMFIELD_ENTRY( PATMGCSTATE, Restore.uEDI),
365 SSMFIELD_ENTRY( PATMGCSTATE, Restore.eFlags),
366 SSMFIELD_ENTRY( PATMGCSTATE, Restore.uFlags),
367 SSMFIELD_ENTRY_TERM()
368};
369
370/**
371 * SSM descriptor table for the PATMPATCHREC structure.
372 */
373static SSMFIELD const g_aPatmPatchRecFields[] =
374{
375 SSMFIELD_ENTRY( PATMPATCHRECSSM, Core.Key),
376 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, Core.pLeft),
377 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, Core.pRight),
378 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, Core.uchHeight),
379 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 3),
380 SSMFIELD_ENTRY( PATMPATCHRECSSM, CoreOffset.Key),
381 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, CoreOffset.pLeft),
382 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, CoreOffset.pRight),
383 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, CoreOffset.uchHeight),
384 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 3),
385 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.uState),
386 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.uOldState),
387 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.uOpMode),
388 SSMFIELD_ENTRY_RCPTR( PATMPATCHRECSSM, patch.pPrivInstrGC),
389 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.unusedHC),
390 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.aPrivInstr),
391 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cbPrivInstr),
392 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.opcode),
393 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cbPatchJump),
394 SSMFIELD_ENTRY_RCPTR( PATMPATCHRECSSM, patch.pPatchJumpDestGC),
395 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.pPatchBlockOffset),
396 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cbPatchBlockSize),
397 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.uCurPatchOffset),
398 SSMFIELD_ENTRY_PAD_HC64( PATMPATCHRECSSM, patch.Alignment0, sizeof(uint32_t)),
399 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.flags),
400 SSMFIELD_ENTRY_RCPTR( PATMPATCHRECSSM, patch.pInstrGCLowest),
401 SSMFIELD_ENTRY_RCPTR( PATMPATCHRECSSM, patch.pInstrGCHighest),
402 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.FixupTree),
403 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.nrFixups),
404 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.nrJumpRecs), // should be zero?
405 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.JumpTree),
406 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.Patch2GuestAddrTree),
407 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.Guest2PatchAddrTree),
408 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.nrPatch2GuestRecs),
409 SSMFIELD_ENTRY_PAD_HC64( PATMPATCHRECSSM, patch.Alignment1, sizeof(uint32_t)),
410 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.unused.pPatchLocStartHC), // saved as zero
411 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.unused.pPatchLocEndHC), // ditto
412 SSMFIELD_ENTRY_IGN_RCPTR( PATMPATCHRECSSM, patch.unused.pGuestLoc), // ditto
413 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, patch.unused.opsize), // ditto
414 SSMFIELD_ENTRY_IGN_HCPTR( PATMPATCHRECSSM, patch.pTempInfo),
415 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cCodeWrites),
416 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cTraps),
417 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.cInvalidWrites),
418 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.uPatchIdx),
419 SSMFIELD_ENTRY( PATMPATCHRECSSM, patch.bDirtyOpcode),
420 SSMFIELD_ENTRY_IGNORE( PATMPATCHRECSSM, patch.Alignment2),
421 SSMFIELD_ENTRY_TERM()
422};
423
424/**
425 * SSM descriptor table for the RELOCREC structure.
426 */
427static SSMFIELD const g_aPatmRelocRec[] =
428{
429 SSMFIELD_ENTRY_HCPTR_HACK_U32( RELOCREC, Core.Key), // Used to store the relocation type
430 SSMFIELD_ENTRY_IGN_HCPTR( RELOCREC, Core.pLeft),
431 SSMFIELD_ENTRY_IGN_HCPTR( RELOCREC, Core.pRight),
432 SSMFIELD_ENTRY_IGNORE( RELOCREC, Core.uchHeight),
433 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 7),
434 SSMFIELD_ENTRY( RELOCREC, uType),
435 SSMFIELD_ENTRY_PAD_HC_AUTO( 0, 4),
436 SSMFIELD_ENTRY_HCPTR_HACK_U32( RELOCREC, pRelocPos), // converted to a patch member offset.
437 SSMFIELD_ENTRY_RCPTR( RELOCREC, pSource),
438 SSMFIELD_ENTRY_RCPTR( RELOCREC, pDest),
439 SSMFIELD_ENTRY_TERM()
440};
441
442/**
443 * SSM descriptor table for the RECPATCHTOGUEST structure.
444 */
445static SSMFIELD const g_aPatmRecPatchToGuest[] =
446{
447 SSMFIELD_ENTRY( RECPATCHTOGUEST, Core.Key),
448 SSMFIELD_ENTRY_PAD_HC_AUTO( 0, 4),
449 SSMFIELD_ENTRY_IGN_HCPTR( RECPATCHTOGUEST, Core.pLeft),
450 SSMFIELD_ENTRY_IGN_HCPTR( RECPATCHTOGUEST, Core.pRight),
451 SSMFIELD_ENTRY_IGNORE( RECPATCHTOGUEST, Core.uchHeight),
452 SSMFIELD_ENTRY_PAD_HC_AUTO( 3, 7),
453 SSMFIELD_ENTRY_RCPTR( RECPATCHTOGUEST, pOrgInstrGC),
454 SSMFIELD_ENTRY( RECPATCHTOGUEST, enmType),
455 SSMFIELD_ENTRY( RECPATCHTOGUEST, fDirty),
456 SSMFIELD_ENTRY( RECPATCHTOGUEST, fJumpTarget),
457 SSMFIELD_ENTRY( RECPATCHTOGUEST, u8DirtyOpcode),
458 SSMFIELD_ENTRY_PAD_HC_AUTO( 1, 5),
459 SSMFIELD_ENTRY_TERM()
460};
461
462#ifdef VBOX_STRICT
463
464/**
465 * Callback function for RTAvlPVDoWithAll
466 *
467 * Counts the number of patches in the tree
468 *
469 * @returns VBox status code.
470 * @param pNode Current node
471 * @param pcPatches Pointer to patch counter (uint32_t)
472 */
473static DECLCALLBACK(int) patmCountLeafPV(PAVLPVNODECORE pNode, void *pcPatches)
474{
475 NOREF(pNode);
476 *(uint32_t *)pcPatches = *(uint32_t *)pcPatches + 1;
477 return VINF_SUCCESS;
478}
479
480/**
481 * Callback function for RTAvlU32DoWithAll
482 *
483 * Counts the number of patches in the tree
484 *
485 * @returns VBox status code.
486 * @param pNode Current node
487 * @param pcPatches Pointer to patch counter (uint32_t)
488 */
489static DECLCALLBACK(int) patmCountLeaf(PAVLU32NODECORE pNode, void *pcPatches)
490{
491 NOREF(pNode);
492 *(uint32_t *)pcPatches = *(uint32_t *)pcPatches + 1;
493 return VINF_SUCCESS;
494}
495
496#endif /* VBOX_STRICT */
497
498/**
499 * Callback function for RTAvloU32DoWithAll
500 *
501 * Counts the number of patches in the tree
502 *
503 * @returns VBox status code.
504 * @param pNode Current node
505 * @param pcPatches Pointer to patch counter
506 */
507static DECLCALLBACK(int) patmCountPatch(PAVLOU32NODECORE pNode, void *pcPatches)
508{
509 NOREF(pNode);
510 *(uint32_t *)pcPatches = *(uint32_t *)pcPatches + 1;
511 return VINF_SUCCESS;
512}
513
514/**
515 * Callback function for RTAvlU32DoWithAll
516 *
517 * Saves all patch to guest lookup records.
518 *
519 * @returns VBox status code.
520 * @param pNode Current node
521 * @param pVM1 Pointer to the VM
522 */
523static DECLCALLBACK(int) patmSaveP2GLookupRecords(PAVLU32NODECORE pNode, void *pVM1)
524{
525 PVM pVM = (PVM)pVM1;
526 PSSMHANDLE pSSM = pVM->patm.s.savedstate.pSSM;
527 PRECPATCHTOGUEST pPatchToGuestRec = (PRECPATCHTOGUEST)pNode;
528
529 /* Save the lookup record. */
530 int rc = SSMR3PutStructEx(pSSM, pPatchToGuestRec, sizeof(RECPATCHTOGUEST), 0 /*fFlags*/, &g_aPatmRecPatchToGuest[0], NULL);
531 AssertRCReturn(rc, rc);
532
533 return VINF_SUCCESS;
534}
535
536/**
537 * Callback function for RTAvlPVDoWithAll
538 *
539 * Saves all patch to guest lookup records.
540 *
541 * @returns VBox status code.
542 * @param pNode Current node
543 * @param pVM1 Pointer to the VM
544 */
545static DECLCALLBACK(int) patmSaveFixupRecords(PAVLPVNODECORE pNode, void *pVM1)
546{
547 PVM pVM = (PVM)pVM1;
548 PSSMHANDLE pSSM = pVM->patm.s.savedstate.pSSM;
549 RELOCREC rec = *(PRELOCREC)pNode;
550 RTRCPTR *pFixup = (RTRCPTR *)rec.pRelocPos;
551
552 /* Convert pointer to an offset into patch memory. May not be applicable
553 to all fixup types, thus the UINT32_MAX. */
554 Assert(rec.pRelocPos);
555 uintptr_t offRelocPos = (uintptr_t)rec.pRelocPos - (uintptr_t)pVM->patm.s.pPatchMemHC;
556 if (offRelocPos > pVM->patm.s.cbPatchMem)
557 offRelocPos = UINT32_MAX;
558 rec.pRelocPos = (uint8_t *)offRelocPos;
559
560 /* Zero rec.Core.Key since it's unused and may trigger SSM check due to the hack below. */
561 rec.Core.Key = 0;
562
563 if (rec.uType == FIXUP_ABSOLUTE)
564 {
565 /* Core.Key abused to store the fixup type. */
566 if (*pFixup == pVM->pVMRC + RT_OFFSETOF(VM, aCpus[0].fLocalForcedActions))
567 rec.Core.Key = (AVLPVKEY)PATM_FIXUP_CPU_FF_ACTION;
568 else
569 if (*pFixup == CPUMR3GetGuestCpuIdDefRCPtr(pVM))
570 rec.Core.Key = (AVLPVKEY)PATM_FIXUP_CPUID_DEFAULT;
571 else
572 if (*pFixup == CPUMR3GetGuestCpuIdStdRCPtr(pVM))
573 rec.Core.Key = (AVLPVKEY)PATM_FIXUP_CPUID_STANDARD;
574 else
575 if (*pFixup == CPUMR3GetGuestCpuIdExtRCPtr(pVM))
576 rec.Core.Key = (AVLPVKEY)PATM_FIXUP_CPUID_EXTENDED;
577 else
578 if (*pFixup == CPUMR3GetGuestCpuIdCentaurRCPtr(pVM))
579 rec.Core.Key = (AVLPVKEY)PATM_FIXUP_CPUID_CENTAUR;
580 }
581
582 /* Save the lookup record. */
583 int rc = SSMR3PutStructEx(pSSM, &rec, sizeof(rec), 0 /*fFlags*/, &g_aPatmRelocRec[0], NULL);
584 AssertRCReturn(rc, rc);
585
586 return VINF_SUCCESS;
587}
588
589/**
590 * Converts a saved state patch record to the memory record.
591 *
592 * @returns nothing.
593 * @param pPatch The memory record.
594 * @param pPatchSSM The SSM version of the patch record.
595 */
596static void patmR3PatchConvertSSM2Mem(PPATMPATCHREC pPatch, PPATMPATCHRECSSM pPatchSSM)
597{
598 /*
599 * Only restore the patch part of the tree record; not the internal data (except the key of course)
600 */
601 pPatch->Core.Key = pPatchSSM->Core.Key;
602 pPatch->CoreOffset.Key = pPatchSSM->CoreOffset.Key;
603 pPatch->patch.uState = pPatchSSM->patch.uState;
604 pPatch->patch.uOldState = pPatchSSM->patch.uOldState;
605 pPatch->patch.uOpMode = pPatchSSM->patch.uOpMode;
606 pPatch->patch.pPrivInstrGC = pPatchSSM->patch.pPrivInstrGC;
607 pPatch->patch.unusedHC = pPatchSSM->patch.unusedHC;
608 memcpy(&pPatch->patch.aPrivInstr[0], &pPatchSSM->patch.aPrivInstr[0], MAX_INSTR_SIZE);
609 pPatch->patch.cbPrivInstr = pPatchSSM->patch.cbPrivInstr;
610 pPatch->patch.opcode = pPatchSSM->patch.opcode;
611 pPatch->patch.cbPatchJump = pPatchSSM->patch.cbPatchJump;
612 pPatch->patch.pPatchJumpDestGC = pPatchSSM->patch.pPatchJumpDestGC;
613 pPatch->patch.pPatchBlockOffset = pPatchSSM->patch.pPatchBlockOffset;
614 pPatch->patch.cbPatchBlockSize = pPatchSSM->patch.cbPatchBlockSize;
615 pPatch->patch.uCurPatchOffset = pPatchSSM->patch.uCurPatchOffset;
616 pPatch->patch.flags = pPatchSSM->patch.flags;
617 pPatch->patch.pInstrGCLowest = pPatchSSM->patch.pInstrGCLowest;
618 pPatch->patch.pInstrGCHighest = pPatchSSM->patch.pInstrGCHighest;
619 pPatch->patch.FixupTree = pPatchSSM->patch.FixupTree;
620 pPatch->patch.nrFixups = pPatchSSM->patch.nrFixups;
621 pPatch->patch.nrJumpRecs = pPatchSSM->patch.nrJumpRecs;
622 pPatch->patch.JumpTree = pPatchSSM->patch.JumpTree;
623 pPatch->patch.Patch2GuestAddrTree = pPatchSSM->patch.Patch2GuestAddrTree;
624 pPatch->patch.Guest2PatchAddrTree = pPatchSSM->patch.Guest2PatchAddrTree;
625 pPatch->patch.nrPatch2GuestRecs = pPatchSSM->patch.nrPatch2GuestRecs;
626 pPatch->patch.unused = pPatchSSM->patch.unused;
627 pPatch->patch.pTempInfo = pPatchSSM->patch.pTempInfo;
628 pPatch->patch.cCodeWrites = pPatchSSM->patch.cCodeWrites;
629 pPatch->patch.cTraps = pPatchSSM->patch.cTraps;
630 pPatch->patch.cInvalidWrites = pPatchSSM->patch.cInvalidWrites;
631 pPatch->patch.uPatchIdx = pPatchSSM->patch.uPatchIdx;
632 pPatch->patch.bDirtyOpcode = pPatchSSM->patch.bDirtyOpcode;
633 pPatch->patch.pTrampolinePatchesHead = NULL;
634}
635
636/**
637 * Converts a memory patch record to the saved state version.
638 *
639 * @returns nothing.
640 * @param pPatchSSM The saved state record.
641 * @param pPatch The memory version to save.
642 */
643static void patmR3PatchConvertMem2SSM(PPATMPATCHRECSSM pPatchSSM, PPATMPATCHREC pPatch)
644{
645 pPatchSSM->Core = pPatch->Core;
646 pPatchSSM->CoreOffset = pPatch->CoreOffset;
647 pPatchSSM->patch.uState = pPatch->patch.uState;
648 pPatchSSM->patch.uOldState = pPatch->patch.uOldState;
649 pPatchSSM->patch.uOpMode = pPatch->patch.uOpMode;
650 pPatchSSM->patch.pPrivInstrGC = pPatch->patch.pPrivInstrGC;
651 pPatchSSM->patch.unusedHC = pPatch->patch.unusedHC;
652 memcpy(&pPatchSSM->patch.aPrivInstr[0], &pPatch->patch.aPrivInstr[0], MAX_INSTR_SIZE);
653 pPatchSSM->patch.cbPrivInstr = pPatch->patch.cbPrivInstr;
654 pPatchSSM->patch.opcode = pPatch->patch.opcode;
655 pPatchSSM->patch.cbPatchJump = pPatch->patch.cbPatchJump;
656 pPatchSSM->patch.pPatchJumpDestGC = pPatch->patch.pPatchJumpDestGC;
657 pPatchSSM->patch.pPatchBlockOffset = pPatch->patch.pPatchBlockOffset;
658 pPatchSSM->patch.cbPatchBlockSize = pPatch->patch.cbPatchBlockSize;
659 pPatchSSM->patch.uCurPatchOffset = pPatch->patch.uCurPatchOffset;
660 pPatchSSM->patch.flags = pPatch->patch.flags;
661 pPatchSSM->patch.pInstrGCLowest = pPatch->patch.pInstrGCLowest;
662 pPatchSSM->patch.pInstrGCHighest = pPatch->patch.pInstrGCHighest;
663 pPatchSSM->patch.FixupTree = pPatch->patch.FixupTree;
664 pPatchSSM->patch.nrFixups = pPatch->patch.nrFixups;
665 pPatchSSM->patch.nrJumpRecs = pPatch->patch.nrJumpRecs;
666 pPatchSSM->patch.JumpTree = pPatch->patch.JumpTree;
667 pPatchSSM->patch.Patch2GuestAddrTree = pPatch->patch.Patch2GuestAddrTree;
668 pPatchSSM->patch.Guest2PatchAddrTree = pPatch->patch.Guest2PatchAddrTree;
669 pPatchSSM->patch.nrPatch2GuestRecs = pPatch->patch.nrPatch2GuestRecs;
670 pPatchSSM->patch.unused = pPatch->patch.unused;
671 pPatchSSM->patch.pTempInfo = pPatch->patch.pTempInfo;
672 pPatchSSM->patch.cCodeWrites = pPatch->patch.cCodeWrites;
673 pPatchSSM->patch.cTraps = pPatch->patch.cTraps;
674 pPatchSSM->patch.cInvalidWrites = pPatch->patch.cInvalidWrites;
675 pPatchSSM->patch.uPatchIdx = pPatch->patch.uPatchIdx;
676 pPatchSSM->patch.bDirtyOpcode = pPatch->patch.bDirtyOpcode;
677}
678
679/**
680 * Callback function for RTAvloU32DoWithAll
681 *
682 * Saves the state of the patch that's being enumerated
683 *
684 * @returns VBox status code.
685 * @param pNode Current node
686 * @param pVM1 Pointer to the VM
687 */
688static DECLCALLBACK(int) patmSavePatchState(PAVLOU32NODECORE pNode, void *pVM1)
689{
690 PVM pVM = (PVM)pVM1;
691 PPATMPATCHREC pPatch = (PPATMPATCHREC)pNode;
692 PATMPATCHRECSSM patch;
693 PSSMHANDLE pSSM = pVM->patm.s.savedstate.pSSM;
694 int rc;
695
696 Assert(!(pPatch->patch.flags & PATMFL_GLOBAL_FUNCTIONS));
697
698 patmR3PatchConvertMem2SSM(&patch, pPatch);
699 Log4(("patmSavePatchState: cbPatchJump=%u uCurPathOffset=%#x pInstrGCLowest/Higest=%#x/%#x nrFixups=%#x nrJumpRecs=%#x\n",
700 patch.patch.cbPatchJump, patch.patch.uCurPatchOffset, patch.patch.pInstrGCLowest, patch.patch.pInstrGCHighest,
701 patch.patch.nrFixups, patch.patch.nrJumpRecs));
702
703 /*
704 * Reset HC pointers that need to be recalculated when loading the state
705 */
706 AssertMsg(patch.patch.uState == PATCH_REFUSED || (patch.patch.pPatchBlockOffset || (patch.patch.flags & (PATMFL_SYSENTER_XP|PATMFL_INT3_REPLACEMENT))),
707 ("State = %x pPatchBlockHC=%08x flags=%x\n", patch.patch.uState, PATCHCODE_PTR_HC(&patch.patch), patch.patch.flags));
708 Assert(pPatch->patch.JumpTree == 0);
709 Assert(!pPatch->patch.pTempInfo || pPatch->patch.pTempInfo->DisasmJumpTree == 0);
710 Assert(!pPatch->patch.pTempInfo || pPatch->patch.pTempInfo->IllegalInstrTree == 0);
711
712 /* Save the patch record itself */
713 rc = SSMR3PutStructEx(pSSM, &patch, sizeof(patch), 0 /*fFlags*/, &g_aPatmPatchRecFields[0], NULL);
714 AssertRCReturn(rc, rc);
715
716 /*
717 * Reset HC pointers in fixup records and save them.
718 */
719#ifdef VBOX_STRICT
720 uint32_t nrFixupRecs = 0;
721 RTAvlPVDoWithAll(&pPatch->patch.FixupTree, true, patmCountLeafPV, &nrFixupRecs);
722 AssertMsg(nrFixupRecs == pPatch->patch.nrFixups, ("Fixup inconsistency! counted %d vs %d\n", nrFixupRecs, pPatch->patch.nrFixups));
723#endif
724 rc = RTAvlPVDoWithAll(&pPatch->patch.FixupTree, true, patmSaveFixupRecords, pVM);
725 AssertRCReturn(rc, rc);
726
727#ifdef VBOX_STRICT
728 uint32_t nrLookupRecords = 0;
729 RTAvlU32DoWithAll(&pPatch->patch.Patch2GuestAddrTree, true, patmCountLeaf, &nrLookupRecords);
730 Assert(nrLookupRecords == pPatch->patch.nrPatch2GuestRecs);
731#endif
732
733 rc = RTAvlU32DoWithAll(&pPatch->patch.Patch2GuestAddrTree, true, patmSaveP2GLookupRecords, pVM);
734 AssertRCReturn(rc, rc);
735
736 return VINF_SUCCESS;
737}
738
739/**
740 * Execute state save operation.
741 *
742 * @returns VBox status code.
743 * @param pVM Pointer to the VM.
744 * @param pSSM SSM operation handle.
745 */
746DECLCALLBACK(int) patmR3Save(PVM pVM, PSSMHANDLE pSSM)
747{
748 PATM patmInfo = pVM->patm.s;
749 int rc;
750
751 pVM->patm.s.savedstate.pSSM = pSSM;
752
753 /*
754 * Reset HC pointers that need to be recalculated when loading the state
755 */
756 patmInfo.pPatchMemHC = NULL;
757 patmInfo.pGCStateHC = 0;
758 patmInfo.pvFaultMonitor = 0;
759
760 Assert(patmInfo.ulCallDepth == 0);
761
762 /*
763 * Count the number of patches in the tree (feeling lazy)
764 */
765 patmInfo.savedstate.cPatches = 0;
766 RTAvloU32DoWithAll(&pVM->patm.s.PatchLookupTreeHC->PatchTree, true, patmCountPatch, &patmInfo.savedstate.cPatches);
767
768 /*
769 * Save PATM structure
770 */
771 rc = SSMR3PutStructEx(pSSM, &patmInfo, sizeof(patmInfo), 0 /*fFlags*/, &g_aPatmFields[0], NULL);
772 AssertRCReturn(rc, rc);
773
774 /*
775 * Save patch memory contents
776 */
777 rc = SSMR3PutMem(pSSM, pVM->patm.s.pPatchMemHC, pVM->patm.s.cbPatchMem);
778 AssertRCReturn(rc, rc);
779
780 /*
781 * Save GC state memory
782 */
783 rc = SSMR3PutStructEx(pSSM, pVM->patm.s.pGCStateHC, sizeof(PATMGCSTATE), 0 /*fFlags*/, &g_aPatmGCStateFields[0], NULL);
784 AssertRCReturn(rc, rc);
785
786 /*
787 * Save PATM stack page
788 */
789 SSMR3PutU32(pSSM, PATM_STACK_TOTAL_SIZE);
790 rc = SSMR3PutMem(pSSM, pVM->patm.s.pGCStackHC, PATM_STACK_TOTAL_SIZE);
791 AssertRCReturn(rc, rc);
792
793 /*
794 * Save all patches
795 */
796 rc = RTAvloU32DoWithAll(&pVM->patm.s.PatchLookupTreeHC->PatchTree, true, patmSavePatchState, pVM);
797 AssertRCReturn(rc, rc);
798
799 /** @note patch statistics are not saved. */
800
801 return VINF_SUCCESS;
802}
803
804
805/**
806 * @callback_method_impl{FNSSMINTLOADEXEC, Dummy load function for HM mode.}
807 */
808DECLCALLBACK(int) patmR3LoadDummy(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
809{
810 return SSMR3SkipToEndOfUnit(pSSM);
811}
812
813
814/**
815 * Execute state load operation.
816 *
817 * @returns VBox status code.
818 * @param pVM Pointer to the VM.
819 * @param pSSM SSM operation handle.
820 * @param uVersion Data layout version.
821 * @param uPass The data pass.
822 */
823DECLCALLBACK(int) patmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
824{
825 PATM patmInfo;
826 int rc;
827
828 if ( uVersion != PATM_SSM_VERSION
829 && uVersion != PATM_SSM_VERSION_MEM
830 && uVersion != PATM_SSM_VERSION_FIXUP_HACK
831 && uVersion != PATM_SSM_VERSION_VER16
832 )
833 {
834 AssertMsgFailed(("patmR3Load: Invalid version uVersion=%d!\n", uVersion));
835 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
836 }
837 uint32_t const fStructRestoreFlags = uVersion <= PATM_SSM_VERSION_MEM ? SSMSTRUCT_FLAGS_MEM_BAND_AID_RELAXED : 0;
838 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
839
840 pVM->patm.s.savedstate.pSSM = pSSM;
841
842 /*
843 * Restore PATM structure
844 */
845 RT_ZERO(patmInfo);
846 if ( uVersion == PATM_SSM_VERSION_MEM
847 && SSMR3HandleRevision(pSSM) >= 86139
848 && SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(4, 2, 51))
849 rc = SSMR3GetStructEx(pSSM, &patmInfo, sizeof(patmInfo), SSMSTRUCT_FLAGS_MEM_BAND_AID_RELAXED,
850 &g_aPatmFields86139[0], NULL);
851 else
852 rc = SSMR3GetStructEx(pSSM, &patmInfo, sizeof(patmInfo), fStructRestoreFlags, &g_aPatmFields[0], NULL);
853 AssertRCReturn(rc, rc);
854
855 /* Relative calls are made to the helper functions. Therefor their relative location must not change! */
856 /* Note: we reuse the saved global helpers and assume they are identical, which is kind of dangerous. */
857 AssertLogRelReturn((pVM->patm.s.pfnHelperCallGC - pVM->patm.s.pPatchMemGC) == (patmInfo.pfnHelperCallGC - patmInfo.pPatchMemGC),
858 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
859 AssertLogRelReturn((pVM->patm.s.pfnHelperRetGC - pVM->patm.s.pPatchMemGC) == (patmInfo.pfnHelperRetGC - patmInfo.pPatchMemGC),
860 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
861 AssertLogRelReturn((pVM->patm.s.pfnHelperJumpGC - pVM->patm.s.pPatchMemGC) == (patmInfo.pfnHelperJumpGC - patmInfo.pPatchMemGC),
862 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
863 AssertLogRelReturn((pVM->patm.s.pfnHelperIretGC - pVM->patm.s.pPatchMemGC) == (patmInfo.pfnHelperIretGC - patmInfo.pPatchMemGC),
864 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
865 AssertLogRelReturn(pVM->patm.s.cbPatchMem == patmInfo.cbPatchMem, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
866
867 pVM->patm.s.offPatchMem = patmInfo.offPatchMem;
868 pVM->patm.s.deltaReloc = patmInfo.deltaReloc;
869 pVM->patm.s.uCurrentPatchIdx = patmInfo.uCurrentPatchIdx;
870 pVM->patm.s.fOutOfMemory = patmInfo.fOutOfMemory;
871
872 /* Lowest and highest patched instruction */
873 pVM->patm.s.pPatchedInstrGCLowest = patmInfo.pPatchedInstrGCLowest;
874 pVM->patm.s.pPatchedInstrGCHighest = patmInfo.pPatchedInstrGCHighest;
875
876 /* Sysenter handlers */
877 pVM->patm.s.pfnSysEnterGC = patmInfo.pfnSysEnterGC;
878 pVM->patm.s.pfnSysEnterPatchGC = patmInfo.pfnSysEnterPatchGC;
879 pVM->patm.s.uSysEnterPatchIdx = patmInfo.uSysEnterPatchIdx;
880
881 Assert(patmInfo.ulCallDepth == 0 && pVM->patm.s.ulCallDepth == 0);
882
883 Log(("pPatchMemGC %RRv vs old %RRv\n", pVM->patm.s.pPatchMemGC, patmInfo.pPatchMemGC));
884 Log(("pGCStateGC %RRv vs old %RRv\n", pVM->patm.s.pGCStateGC, patmInfo.pGCStateGC));
885 Log(("pGCStackGC %RRv vs old %RRv\n", pVM->patm.s.pGCStackGC, patmInfo.pGCStackGC));
886 Log(("pCPUMCtxGC %RRv vs old %RRv\n", pVM->patm.s.pCPUMCtxGC, patmInfo.pCPUMCtxGC));
887
888
889 /** @note patch statistics are not restored. */
890
891 /*
892 * Restore patch memory contents
893 */
894 Log(("Restore patch memory: new %RRv old %RRv\n", pVM->patm.s.pPatchMemGC, patmInfo.pPatchMemGC));
895 rc = SSMR3GetMem(pSSM, pVM->patm.s.pPatchMemHC, pVM->patm.s.cbPatchMem);
896 AssertRCReturn(rc, rc);
897
898 /*
899 * Restore GC state memory
900 */
901 RT_BZERO(pVM->patm.s.pGCStateHC, sizeof(PATMGCSTATE));
902 rc = SSMR3GetStructEx(pSSM, pVM->patm.s.pGCStateHC, sizeof(PATMGCSTATE), fStructRestoreFlags, &g_aPatmGCStateFields[0], NULL);
903 AssertRCReturn(rc, rc);
904
905 /*
906 * Restore PATM stack page
907 */
908 uint32_t cbStack = PATM_STACK_TOTAL_SIZE;
909 if (uVersion > PATM_SSM_VERSION_MEM)
910 {
911 rc = SSMR3GetU32(pSSM, &cbStack);
912 AssertRCReturn(rc, rc);
913 }
914 AssertCompile(!(PATM_STACK_TOTAL_SIZE & 31));
915 AssertLogRelMsgReturn(cbStack > 0 && cbStack <= PATM_STACK_TOTAL_SIZE && !(cbStack & 31),
916 ("cbStack=%#x vs %#x", cbStack, PATM_STACK_TOTAL_SIZE),
917 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
918 rc = SSMR3GetMem(pSSM, pVM->patm.s.pGCStackHC, cbStack);
919 AssertRCReturn(rc, rc);
920 if (cbStack < PATM_STACK_TOTAL_SIZE)
921 memset((uint8_t *)pVM->patm.s.pGCStackHC + cbStack, 0, PATM_STACK_TOTAL_SIZE - cbStack);
922
923 /*
924 * Load all patches
925 */
926 for (unsigned i = 0; i < patmInfo.savedstate.cPatches; i++)
927 {
928 PATMPATCHRECSSM patch;
929 PATMPATCHREC *pPatchRec;
930
931 RT_ZERO(patch);
932 rc = SSMR3GetStructEx(pSSM, &patch, sizeof(patch), fStructRestoreFlags, &g_aPatmPatchRecFields[0], NULL);
933 AssertRCReturn(rc, rc);
934 Log4(("patmR3Load: cbPatchJump=%u uCurPathOffset=%#x pInstrGCLowest/Higest=%#x/%#x nrFixups=%#x nrJumpRecs=%#x\n",
935 patch.patch.cbPatchJump, patch.patch.uCurPatchOffset, patch.patch.pInstrGCLowest, patch.patch.pInstrGCHighest,
936 patch.patch.nrFixups, patch.patch.nrJumpRecs));
937
938 Assert(!(patch.patch.flags & PATMFL_GLOBAL_FUNCTIONS));
939
940 rc = MMHyperAlloc(pVM, sizeof(PATMPATCHREC), 0, MM_TAG_PATM_PATCH, (void **)&pPatchRec);
941 if (RT_FAILURE(rc))
942 {
943 AssertMsgFailed(("Out of memory!!!!\n"));
944 return VERR_NO_MEMORY;
945 }
946
947 /* Convert SSM version to memory. */
948 patmR3PatchConvertSSM2Mem(pPatchRec, &patch);
949
950 Log(("Restoring patch %RRv -> %RRv state %x\n", pPatchRec->patch.pPrivInstrGC, patmInfo.pPatchMemGC + pPatchRec->patch.pPatchBlockOffset, pPatchRec->patch.uState));
951 bool ret = RTAvloU32Insert(&pVM->patm.s.PatchLookupTreeHC->PatchTree, &pPatchRec->Core);
952 Assert(ret);
953 if (pPatchRec->patch.uState != PATCH_REFUSED)
954 {
955 if (pPatchRec->patch.pPatchBlockOffset)
956 {
957 /* We actually generated code for this patch. */
958 ret = RTAvloU32Insert(&pVM->patm.s.PatchLookupTreeHC->PatchTreeByPatchAddr, &pPatchRec->CoreOffset);
959 AssertMsg(ret, ("Inserting patch %RRv offset %08RX32 failed!!\n", pPatchRec->patch.pPrivInstrGC, pPatchRec->CoreOffset.Key));
960 }
961 }
962 /* Set to zero as we don't need it anymore. */
963 pPatchRec->patch.pTempInfo = 0;
964
965 PATMP2GLOOKUPREC cacheRec;
966 RT_ZERO(cacheRec);
967 cacheRec.pPatch = &pPatchRec->patch;
968
969 uint8_t *pPrivInstrHC = patmR3GCVirtToHCVirt(pVM, &cacheRec, pPatchRec->patch.pPrivInstrGC);
970 /* Can fail due to page or page table not present. */
971
972 /*
973 * Restore fixup records and correct HC pointers in fixup records
974 */
975 pPatchRec->patch.FixupTree = 0;
976 pPatchRec->patch.nrFixups = 0; /* increased by patmPatchAddReloc32 */
977 for (unsigned j = 0; j < patch.patch.nrFixups; j++)
978 {
979 RELOCREC rec;
980 int32_t offset;
981 RTRCPTR *pFixup;
982
983 RT_ZERO(rec);
984 rc = SSMR3GetStructEx(pSSM, &rec, sizeof(rec), fStructRestoreFlags, &g_aPatmRelocRec[0], NULL);
985 AssertRCReturn(rc, rc);
986
987 if (pPrivInstrHC)
988 {
989 /* rec.pRelocPos now contains the relative position inside the hypervisor area. */
990 offset = (int32_t)(intptr_t)rec.pRelocPos;
991 /* Convert to HC pointer again. */
992 if ((uintptr_t)rec.pRelocPos < pVM->patm.s.cbPatchMem)
993 rec.pRelocPos = pVM->patm.s.pPatchMemHC + (uintptr_t)rec.pRelocPos;
994 else
995 rec.pRelocPos = NULL;
996 pFixup = (RTRCPTR *)rec.pRelocPos;
997
998 if (pPatchRec->patch.uState != PATCH_REFUSED)
999 {
1000 if ( rec.uType == FIXUP_REL_JMPTOPATCH
1001 && (pPatchRec->patch.flags & PATMFL_PATCHED_GUEST_CODE))
1002 {
1003 Assert(pPatchRec->patch.cbPatchJump == SIZEOF_NEARJUMP32 || pPatchRec->patch.cbPatchJump == SIZEOF_NEAR_COND_JUMP32);
1004 unsigned offset2 = (pPatchRec->patch.cbPatchJump == SIZEOF_NEARJUMP32) ? 1 : 2;
1005
1006 rec.pRelocPos = pPrivInstrHC + offset2;
1007 pFixup = (RTRCPTR *)rec.pRelocPos;
1008 }
1009
1010 patmCorrectFixup(pVM, uVersion, patmInfo, &pPatchRec->patch, &rec, offset, pFixup);
1011 }
1012
1013 rc = patmPatchAddReloc32(pVM, &pPatchRec->patch, rec.pRelocPos, rec.uType, rec.pSource, rec.pDest);
1014 AssertRCReturn(rc, rc);
1015 }
1016 }
1017 /* Release previous lock if any. */
1018 if (cacheRec.Lock.pvMap)
1019 PGMPhysReleasePageMappingLock(pVM, &cacheRec.Lock);
1020
1021 /* And all patch to guest lookup records */
1022 Assert(pPatchRec->patch.nrPatch2GuestRecs || pPatchRec->patch.uState == PATCH_REFUSED || (pPatchRec->patch.flags & (PATMFL_SYSENTER_XP | PATMFL_IDTHANDLER | PATMFL_TRAPHANDLER | PATMFL_INT3_REPLACEMENT)));
1023
1024 pPatchRec->patch.Patch2GuestAddrTree = 0;
1025 pPatchRec->patch.Guest2PatchAddrTree = 0;
1026 if (pPatchRec->patch.nrPatch2GuestRecs)
1027 {
1028 RECPATCHTOGUEST rec;
1029 uint32_t nrPatch2GuestRecs = pPatchRec->patch.nrPatch2GuestRecs;
1030
1031 pPatchRec->patch.nrPatch2GuestRecs = 0; /* incremented by patmr3AddP2GLookupRecord */
1032 for (uint32_t j=0;j<nrPatch2GuestRecs;j++)
1033 {
1034 RT_ZERO(rec);
1035 rc = SSMR3GetStructEx(pSSM, &rec, sizeof(rec), fStructRestoreFlags, &g_aPatmRecPatchToGuest[0], NULL);
1036 AssertRCReturn(rc, rc);
1037
1038 patmR3AddP2GLookupRecord(pVM, &pPatchRec->patch, (uintptr_t)rec.Core.Key + pVM->patm.s.pPatchMemHC, rec.pOrgInstrGC, rec.enmType, rec.fDirty);
1039 }
1040 Assert(pPatchRec->patch.Patch2GuestAddrTree);
1041 }
1042
1043 if (pPatchRec->patch.flags & PATMFL_CODE_MONITORED)
1044 {
1045 /* Insert the guest page lookup records (for detection self-modifying code) */
1046 rc = patmInsertPatchPages(pVM, &pPatchRec->patch);
1047 AssertRCReturn(rc, rc);
1048 }
1049
1050#if 0 /* can fail def LOG_ENABLED */
1051 if ( pPatchRec->patch.uState != PATCH_REFUSED
1052 && !(pPatchRec->patch.flags & PATMFL_INT3_REPLACEMENT))
1053 {
1054 pPatchRec->patch.pTempInfo = (PPATCHINFOTEMP)MMR3HeapAllocZ(pVM, MM_TAG_PATM_PATCH, sizeof(PATCHINFOTEMP));
1055 Log(("Patch code ----------------------------------------------------------\n"));
1056 patmr3DisasmCodeStream(pVM, PATCHCODE_PTR_GC(&pPatchRec->patch), PATCHCODE_PTR_GC(&pPatchRec->patch), patmr3DisasmCallback, &pPatchRec->patch);
1057 Log(("Patch code ends -----------------------------------------------------\n"));
1058 MMR3HeapFree(pPatchRec->patch.pTempInfo);
1059 pPatchRec->patch.pTempInfo = NULL;
1060 }
1061#endif
1062 /* Remove the patch in case the gc mapping is not present. */
1063 if ( !pPrivInstrHC
1064 && pPatchRec->patch.uState == PATCH_ENABLED)
1065 {
1066 Log(("Remove patch %RGv due to failed HC address translation\n", pPatchRec->patch.pPrivInstrGC));
1067 PATMR3RemovePatch(pVM, pPatchRec->patch.pPrivInstrGC);
1068 }
1069 }
1070
1071 /*
1072 * Correct absolute fixups in the global patch. (helper functions)
1073 * Bit of a mess. Uses the new patch record, but restored patch functions.
1074 */
1075 PRELOCREC pRec = 0;
1076 AVLPVKEY key = 0;
1077
1078 Log(("Correct fixups in global helper functions\n"));
1079 while (true)
1080 {
1081 int32_t offset;
1082 RTRCPTR *pFixup;
1083
1084 /* Get the record that's closest from above */
1085 pRec = (PRELOCREC)RTAvlPVGetBestFit(&pVM->patm.s.pGlobalPatchRec->patch.FixupTree, key, true);
1086 if (pRec == 0)
1087 break;
1088
1089 key = (AVLPVKEY)(pRec->pRelocPos + 1); /* search for the next record during the next round. */
1090
1091 /* rec.pRelocPos now contains the relative position inside the hypervisor area. */
1092 offset = (int32_t)(pRec->pRelocPos - pVM->patm.s.pPatchMemHC);
1093 pFixup = (RTRCPTR *)pRec->pRelocPos;
1094
1095 /* Correct fixups that refer to PATM structures in the hypervisor region (their addresses might have changed). */
1096 patmCorrectFixup(pVM, uVersion, patmInfo, &pVM->patm.s.pGlobalPatchRec->patch, pRec, offset, pFixup);
1097 }
1098
1099#ifdef VBOX_WITH_STATISTICS
1100 /*
1101 * Restore relevant old statistics
1102 */
1103 pVM->patm.s.StatDisabled = patmInfo.StatDisabled;
1104 pVM->patm.s.StatUnusable = patmInfo.StatUnusable;
1105 pVM->patm.s.StatEnabled = patmInfo.StatEnabled;
1106 pVM->patm.s.StatInstalled = patmInfo.StatInstalled;
1107#endif
1108
1109 return VINF_SUCCESS;
1110}
1111
1112/**
1113 * Correct fixups to predefined hypervisor PATM regions. (their addresses might have changed)
1114 *
1115 * @returns VBox status code.
1116 * @param pVM Pointer to the VM.
1117 * @param ulSSMVersion SSM version
1118 * @param patmInfo Saved PATM structure
1119 * @param pPatch Patch record
1120 * @param pRec Relocation record
1121 * @param offset Offset of referenced data/code
1122 * @param pFixup Fixup address
1123 */
1124static void patmCorrectFixup(PVM pVM, unsigned ulSSMVersion, PATM &patmInfo, PPATCHINFO pPatch, PRELOCREC pRec, int32_t offset, RTRCPTR *pFixup)
1125{
1126 int32_t delta = pVM->patm.s.pPatchMemGC - patmInfo.pPatchMemGC;
1127
1128 switch (pRec->uType)
1129 {
1130 case FIXUP_ABSOLUTE:
1131 {
1132 if (pRec->pSource && !PATMIsPatchGCAddr(pVM, (RTRCUINTPTR)pRec->pSource))
1133 break;
1134
1135 if ( *pFixup >= patmInfo.pGCStateGC
1136 && *pFixup < patmInfo.pGCStateGC + sizeof(PATMGCSTATE))
1137 {
1138 LogFlow(("Changing absolute GCState at %RRv from %RRv to %RRv\n", patmInfo.pPatchMemGC + offset, *pFixup, (*pFixup - patmInfo.pGCStateGC) + pVM->patm.s.pGCStateGC));
1139 *pFixup = (*pFixup - patmInfo.pGCStateGC) + pVM->patm.s.pGCStateGC;
1140 }
1141 else
1142 if ( *pFixup >= patmInfo.pCPUMCtxGC
1143 && *pFixup < patmInfo.pCPUMCtxGC + sizeof(CPUMCTX))
1144 {
1145 LogFlow(("Changing absolute CPUMCTX at %RRv from %RRv to %RRv\n", patmInfo.pPatchMemGC + offset, *pFixup, (*pFixup - patmInfo.pCPUMCtxGC) + pVM->patm.s.pCPUMCtxGC));
1146
1147 /* The CPUMCTX structure has completely changed, so correct the offsets too. */
1148 if (ulSSMVersion == PATM_SSM_VERSION_VER16)
1149 {
1150 unsigned uCPUMOffset = *pFixup - patmInfo.pCPUMCtxGC;
1151
1152 /* ''case RT_OFFSETOF()'' does not work as gcc refuses to use & as a constant expression.
1153 * Defining RT_OFFSETOF as __builtin_offsetof for gcc would make this possible. But this
1154 * function is not available in older gcc versions, at least not in gcc-3.3 */
1155 if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr0))
1156 {
1157 LogFlow(("Changing dr[0] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[0])));
1158 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[0]);
1159 }
1160 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr1))
1161 {
1162 LogFlow(("Changing dr[1] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[1])));
1163 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[1]);
1164 }
1165 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr2))
1166 {
1167 LogFlow(("Changing dr[2] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[2])));
1168 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[2]);
1169 }
1170 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr3))
1171 {
1172 LogFlow(("Changing dr[3] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[3])));
1173 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[3]);
1174 }
1175 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr4))
1176 {
1177 LogFlow(("Changing dr[4] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[4])));
1178 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[4]);
1179 }
1180 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr5))
1181 {
1182 LogFlow(("Changing dr[5] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[5])));
1183 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[5]);
1184 }
1185 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr6))
1186 {
1187 LogFlow(("Changing dr[6] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[6])));
1188 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[6]);
1189 }
1190 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, dr7))
1191 {
1192 LogFlow(("Changing dr[7] offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, dr[7])));
1193 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, dr[7]);
1194 }
1195 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, cr0))
1196 {
1197 LogFlow(("Changing cr0 offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, cr0)));
1198 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, cr0);
1199 }
1200 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, cr2))
1201 {
1202 LogFlow(("Changing cr2 offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, cr2)));
1203 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, cr2);
1204 }
1205 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, cr3))
1206 {
1207 LogFlow(("Changing cr3 offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, cr3)));
1208 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, cr3);
1209 }
1210 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, cr4))
1211 {
1212 LogFlow(("Changing cr4 offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, cr4)));
1213 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, cr4);
1214 }
1215 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, tr))
1216 {
1217 LogFlow(("Changing tr offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, tr)));
1218 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, tr);
1219 }
1220 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, ldtr))
1221 {
1222 LogFlow(("Changing ldtr offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, ldtr)));
1223 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, ldtr);
1224 }
1225 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, gdtr.pGdt))
1226 {
1227 LogFlow(("Changing pGdt offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, gdtr.pGdt)));
1228 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, gdtr.pGdt);
1229 }
1230 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, gdtr.cbGdt))
1231 {
1232 LogFlow(("Changing cbGdt offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, gdtr.cbGdt)));
1233 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, gdtr.cbGdt);
1234 }
1235 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, idtr.pIdt))
1236 {
1237 LogFlow(("Changing pIdt offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, idtr.pIdt)));
1238 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, idtr.pIdt);
1239 }
1240 else if (uCPUMOffset == (unsigned)RT_OFFSETOF(CPUMCTX_VER1_6, idtr.cbIdt))
1241 {
1242 LogFlow(("Changing cbIdt offset from %x to %x\n", uCPUMOffset, RT_OFFSETOF(CPUMCTX, idtr.cbIdt)));
1243 *pFixup = pVM->patm.s.pCPUMCtxGC + RT_OFFSETOF(CPUMCTX, idtr.cbIdt);
1244 }
1245 else
1246 AssertMsgFailed(("Unexpected CPUMCTX offset %x\n", uCPUMOffset));
1247 }
1248 else
1249 *pFixup = (*pFixup - patmInfo.pCPUMCtxGC) + pVM->patm.s.pCPUMCtxGC;
1250 }
1251 else
1252 if ( *pFixup >= patmInfo.pStatsGC
1253 && *pFixup < patmInfo.pStatsGC + PATM_STAT_MEMSIZE)
1254 {
1255 LogFlow(("Changing absolute Stats at %RRv from %RRv to %RRv\n", patmInfo.pPatchMemGC + offset, *pFixup, (*pFixup - patmInfo.pStatsGC) + pVM->patm.s.pStatsGC));
1256 *pFixup = (*pFixup - patmInfo.pStatsGC) + pVM->patm.s.pStatsGC;
1257 }
1258 else
1259 if ( *pFixup >= patmInfo.pGCStackGC
1260 && *pFixup < patmInfo.pGCStackGC + PATM_STACK_TOTAL_SIZE)
1261 {
1262 LogFlow(("Changing absolute Stack at %RRv from %RRv to %RRv\n", patmInfo.pPatchMemGC + offset, *pFixup, (*pFixup - patmInfo.pGCStackGC) + pVM->patm.s.pGCStackGC));
1263 *pFixup = (*pFixup - patmInfo.pGCStackGC) + pVM->patm.s.pGCStackGC;
1264 }
1265 else
1266 if ( *pFixup >= patmInfo.pPatchMemGC
1267 && *pFixup < patmInfo.pPatchMemGC + patmInfo.cbPatchMem)
1268 {
1269 LogFlow(("Changing absolute PatchMem at %RRv from %RRv to %RRv\n", patmInfo.pPatchMemGC + offset, *pFixup, (*pFixup - patmInfo.pPatchMemGC) + pVM->patm.s.pPatchMemGC));
1270 *pFixup = (*pFixup - patmInfo.pPatchMemGC) + pVM->patm.s.pPatchMemGC;
1271 }
1272 else
1273 /* Boldly ASSUMES:
1274 * 1. That pCPUMCtxGC is in the VM structure and that its location is
1275 * at the first page of the same 4 MB chunk.
1276 * 2. That the forced actions were in the first 32 bytes of the VM
1277 * structure.
1278 * 3. That the CPUM leafs are less than 8KB into the structure. */
1279 if ( ulSSMVersion <= PATM_SSM_VERSION_FIXUP_HACK
1280 && *pFixup - (patmInfo.pCPUMCtxGC & UINT32_C(0xffc00000)) < UINT32_C(32))
1281 {
1282 LogFlow(("Changing fLocalForcedActions fixup from %RRv to %RRv\n", *pFixup, pVM->pVMRC + RT_OFFSETOF(VM, aCpus[0].fLocalForcedActions)));
1283 *pFixup = pVM->pVMRC + RT_OFFSETOF(VM, aCpus[0].fLocalForcedActions);
1284 }
1285 else
1286 if ( ulSSMVersion <= PATM_SSM_VERSION_FIXUP_HACK
1287 && *pFixup - (patmInfo.pCPUMCtxGC & UINT32_C(0xffc00000)) < UINT32_C(8192))
1288 {
1289 static int cCpuidFixup = 0;
1290#ifdef LOG_ENABLED
1291 RTRCPTR oldFixup = *pFixup;
1292#endif
1293 /* very dirty assumptions about the cpuid patch and cpuid ordering. */
1294 switch(cCpuidFixup & 3)
1295 {
1296 case 0:
1297 *pFixup = CPUMR3GetGuestCpuIdDefRCPtr(pVM);
1298 break;
1299 case 1:
1300 *pFixup = CPUMR3GetGuestCpuIdStdRCPtr(pVM);
1301 break;
1302 case 2:
1303 *pFixup = CPUMR3GetGuestCpuIdExtRCPtr(pVM);
1304 break;
1305 case 3:
1306 *pFixup = CPUMR3GetGuestCpuIdCentaurRCPtr(pVM);
1307 break;
1308 }
1309 LogFlow(("Changing cpuid fixup %d from %RRv to %RRv\n", cCpuidFixup, oldFixup, *pFixup));
1310 cCpuidFixup++;
1311 }
1312 else
1313 if (ulSSMVersion >= PATM_SSM_VERSION_MEM)
1314 {
1315#ifdef LOG_ENABLED
1316 RTRCPTR oldFixup = *pFixup;
1317#endif
1318 /* Core.Key abused to store the type of fixup */
1319 switch ((uintptr_t)pRec->Core.Key)
1320 {
1321 case PATM_FIXUP_CPU_FF_ACTION:
1322 *pFixup = pVM->pVMRC + RT_OFFSETOF(VM, aCpus[0].fLocalForcedActions);
1323 LogFlow(("Changing cpu ff action fixup from %x to %x\n", oldFixup, *pFixup));
1324 break;
1325 case PATM_FIXUP_CPUID_DEFAULT:
1326 *pFixup = CPUMR3GetGuestCpuIdDefRCPtr(pVM);
1327 LogFlow(("Changing cpuid def fixup from %x to %x\n", oldFixup, *pFixup));
1328 break;
1329 case PATM_FIXUP_CPUID_STANDARD:
1330 *pFixup = CPUMR3GetGuestCpuIdStdRCPtr(pVM);
1331 LogFlow(("Changing cpuid std fixup from %x to %x\n", oldFixup, *pFixup));
1332 break;
1333 case PATM_FIXUP_CPUID_EXTENDED:
1334 *pFixup = CPUMR3GetGuestCpuIdExtRCPtr(pVM);
1335 LogFlow(("Changing cpuid ext fixup from %x to %x\n", oldFixup, *pFixup));
1336 break;
1337 case PATM_FIXUP_CPUID_CENTAUR:
1338 *pFixup = CPUMR3GetGuestCpuIdCentaurRCPtr(pVM);
1339 LogFlow(("Changing cpuid centaur fixup from %x to %x\n", oldFixup, *pFixup));
1340 break;
1341 default:
1342 AssertMsgFailed(("Unexpected fixup value %x\n", *pFixup));
1343 break;
1344 }
1345 }
1346
1347#ifdef RT_OS_WINDOWS
1348 AssertCompile(RT_OFFSETOF(VM, fGlobalForcedActions) < 32);
1349#endif
1350 break;
1351 }
1352
1353 case FIXUP_REL_JMPTOPATCH:
1354 {
1355 RTRCPTR pTarget = (RTRCPTR)((RTRCINTPTR)pRec->pDest + delta);
1356
1357 if ( pPatch->uState == PATCH_ENABLED
1358 && (pPatch->flags & PATMFL_PATCHED_GUEST_CODE))
1359 {
1360 uint8_t oldJump[SIZEOF_NEAR_COND_JUMP32];
1361 uint8_t temp[SIZEOF_NEAR_COND_JUMP32];
1362 RTRCPTR pJumpOffGC;
1363 RTRCINTPTR displ = (RTRCINTPTR)pTarget - (RTRCINTPTR)pRec->pSource;
1364 RTRCINTPTR displOld= (RTRCINTPTR)pRec->pDest - (RTRCINTPTR)pRec->pSource;
1365
1366 Log(("Relative fixup (g2p) %08X -> %08X at %08X (source=%08x, target=%08x)\n", *(int32_t*)pRec->pRelocPos, displ, pRec->pRelocPos, pRec->pSource, pRec->pDest));
1367
1368 Assert(pRec->pSource - pPatch->cbPatchJump == pPatch->pPrivInstrGC);
1369#ifdef PATM_RESOLVE_CONFLICTS_WITH_JUMP_PATCHES
1370 if (pPatch->cbPatchJump == SIZEOF_NEAR_COND_JUMP32)
1371 {
1372 Assert(pPatch->flags & PATMFL_JUMP_CONFLICT);
1373
1374 pJumpOffGC = pPatch->pPrivInstrGC + 2; //two byte opcode
1375 oldJump[0] = pPatch->aPrivInstr[0];
1376 oldJump[1] = pPatch->aPrivInstr[1];
1377 *(RTRCUINTPTR *)&oldJump[2] = displOld;
1378 }
1379 else
1380#endif
1381 if (pPatch->cbPatchJump == SIZEOF_NEARJUMP32)
1382 {
1383 pJumpOffGC = pPatch->pPrivInstrGC + 1; //one byte opcode
1384 oldJump[0] = 0xE9;
1385 *(RTRCUINTPTR *)&oldJump[1] = displOld;
1386 }
1387 else
1388 {
1389 AssertMsgFailed(("Invalid patch jump size %d\n", pPatch->cbPatchJump));
1390 break;
1391 }
1392 Assert(pPatch->cbPatchJump <= sizeof(temp));
1393
1394 /*
1395 * Read old patch jump and compare it to the one we previously installed
1396 */
1397 int rc = PGMPhysSimpleReadGCPtr(VMMGetCpu0(pVM), temp, pPatch->pPrivInstrGC, pPatch->cbPatchJump);
1398 Assert(RT_SUCCESS(rc) || rc == VERR_PAGE_NOT_PRESENT || rc == VERR_PAGE_TABLE_NOT_PRESENT);
1399
1400 if (rc == VERR_PAGE_NOT_PRESENT || rc == VERR_PAGE_TABLE_NOT_PRESENT)
1401 {
1402 RTRCPTR pPage = pPatch->pPrivInstrGC & PAGE_BASE_GC_MASK;
1403
1404 rc = PGMR3HandlerVirtualRegister(pVM, PGMVIRTHANDLERTYPE_ALL, pPage, pPage + (PAGE_SIZE - 1) /* inclusive! */, 0, patmVirtPageHandler, "PATMGCMonitorPage", 0, "PATMMonitorPatchJump");
1405 Assert(RT_SUCCESS(rc) || rc == VERR_PGM_HANDLER_VIRTUAL_CONFLICT);
1406 }
1407 else
1408 if (memcmp(temp, oldJump, pPatch->cbPatchJump))
1409 {
1410 Log(("PATM: Patch jump was overwritten -> disabling patch!!\n"));
1411 /*
1412 * Disable patch; this is not a good solution
1413 */
1414 /* @todo hopefully it was completely overwritten (if the read was successful)!!!! */
1415 pPatch->uState = PATCH_DISABLED;
1416 }
1417 else
1418 if (RT_SUCCESS(rc))
1419 {
1420 rc = PGMPhysSimpleDirtyWriteGCPtr(VMMGetCpu0(pVM), pJumpOffGC, &displ, sizeof(displ));
1421 AssertRC(rc);
1422 }
1423 else
1424 AssertMsgFailed(("Unexpected error %d from MMR3PhysReadGCVirt\n", rc));
1425 }
1426 else
1427 Log(("Skip the guest jump to patch code for this disabled patch %08X\n", pRec->pRelocPos));
1428
1429 pRec->pDest = pTarget;
1430 break;
1431 }
1432
1433 case FIXUP_REL_JMPTOGUEST:
1434 {
1435 RTRCPTR pSource = (RTRCPTR)((RTRCINTPTR)pRec->pSource + delta);
1436 RTRCINTPTR displ = (RTRCINTPTR)pRec->pDest - (RTRCINTPTR)pSource;
1437
1438 Assert(!(pPatch->flags & PATMFL_GLOBAL_FUNCTIONS));
1439 Log(("Relative fixup (p2g) %08X -> %08X at %08X (source=%08x, target=%08x)\n", *(int32_t*)pRec->pRelocPos, displ, pRec->pRelocPos, pRec->pSource, pRec->pDest));
1440 *(RTRCUINTPTR *)pRec->pRelocPos = displ;
1441 pRec->pSource = pSource;
1442 break;
1443
1444 }
1445}
1446}
1447
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