PATMInternal.h@ 35273

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*: spelling fixes, thanks Timeless!
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1	/* $Id: PATMInternal.h 33540 2010-10-28 09:27:05Z vboxsync $ */
2	/** @file
3	* PATM - Internal header file.
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	#ifndef ___PATMInternal_h
19	#define ___PATMInternal_h
20
21	#include <VBox/cdefs.h>
22	#include <VBox/types.h>
23	#include <VBox/patm.h>
24	#include <VBox/stam.h>
25	#include <VBox/dis.h>
26	#include <VBox/pgm.h>
27	#include <iprt/avl.h>
28	#include <iprt/param.h>
29	#include <VBox/log.h>
30
31
32
33	#define PATM_SSM_VERSION 55
34	#define PATM_SSM_VERSION_FIXUP_HACK 54
35	#define PATM_SSM_VERSION_FIXUP_HACK 54
36	#define PATM_SSM_VERSION_VER16 53
37
38	/* Enable for call patching. */
39	#define PATM_ENABLE_CALL
40	#define PATCH_MEMORY_SIZE (210241024)
41	#define MAX_PATCH_SIZE (1024*4)
42
43	/*
44	* Internal patch type flags (starts at RT_BIT(11))
45	*/
46
47	#define PATMFL_CHECK_SIZE RT_BIT_64(11)
48	#define PATMFL_FOUND_PATCHEND RT_BIT_64(12)
49	#define PATMFL_SINGLE_INSTRUCTION RT_BIT_64(13)
50	#define PATMFL_SYSENTER_XP RT_BIT_64(14)
51	#define PATMFL_JUMP_CONFLICT RT_BIT_64(15)
52	#define PATMFL_READ_ORIGINAL_BYTES RT_BIT_64(16) /** opcode might have already been patched */
53	#define PATMFL_INT3_REPLACEMENT RT_BIT_64(17)
54	#define PATMFL_SUPPORT_CALLS RT_BIT_64(18)
55	#define PATMFL_SUPPORT_INDIRECT_CALLS RT_BIT_64(19)
56	#define PATMFL_IDTHANDLER_WITHOUT_ENTRYPOINT RT_BIT_64(20) /** internal flag to avoid duplicate entrypoints */
57	#define PATMFL_INHIBIT_IRQS RT_BIT_64(21) /** temporary internal flag */
58	#define PATMFL_GENERATE_JUMPTOGUEST RT_BIT_64(22) /** temporary internal flag */
59	#define PATMFL_RECOMPILE_NEXT RT_BIT_64(23) /** for recompilation of the next instruction */
60	#define PATMFL_CODE_MONITORED RT_BIT_64(24) /** code pages of guest monitored for self-modifying code. */
61	#define PATMFL_CALLABLE_AS_FUNCTION RT_BIT_64(25) /** cli and pushf blocks can be used as callable functions. */
62	#define PATMFL_GLOBAL_FUNCTIONS RT_BIT_64(26) /** fake patch for global patm functions. */
63	#define PATMFL_TRAMPOLINE RT_BIT_64(27) /** trampoline patch that clears PATM_INTERRUPTFLAG and jumps to patch destination */
64	#define PATMFL_GENERATE_SETPIF RT_BIT_64(28) /** generate set PIF for the next instruction */
65	#define PATMFL_INSTR_HINT RT_BIT_64(29) /** Generate patch, but don't activate it. */
66	#define PATMFL_PATCHED_GUEST_CODE RT_BIT_64(30) /** Patched guest code. */
67	#define PATMFL_MUST_INSTALL_PATCHJMP RT_BIT_64(31) /** Need to patch guest code in order to activate patch. */
68	#define PATMFL_INT3_REPLACEMENT_BLOCK RT_BIT_64(32) /** int 3 replacement block */
69	#define PATMFL_EXTERNAL_JUMP_INSIDE RT_BIT_64(33) /** A trampoline patch was created that jumps to an instruction in the patch block */
70	#define PATMFL_CODE_REFERENCED RT_BIT_64(34) /** patch block referenced (called, jumped to) by another patch. */
71
72	#define SIZEOF_NEARJUMP8 2 //opcode byte + 1 byte relative offset
73	#define SIZEOF_NEARJUMP16 3 //opcode byte + 2 byte relative offset
74	#define SIZEOF_NEARJUMP32 5 //opcode byte + 4 byte relative offset
75	#define SIZEOF_NEAR_COND_JUMP32 6 //0xF + opcode byte + 4 byte relative offset
76
77	#define MAX_INSTR_SIZE 16
78
79	//Patch states
80	#define PATCH_REFUSED 1
81	#define PATCH_DISABLED 2
82	#define PATCH_ENABLED 4
83	#define PATCH_UNUSABLE 8
84	#define PATCH_DIRTY 16
85	#define PATCH_DISABLE_PENDING 32
86
87
88	#define MAX_PATCH_TRAPS 4
89	#define PATM_MAX_CALL_DEPTH 32
90	/* Maximum nr of writes before a patch is marked dirty. (disabled) */
91	#define PATM_MAX_CODE_WRITES 32
92	/* Maximum nr of invalid writes before a patch is disabled. */
93	#define PATM_MAX_INVALID_WRITES 16384
94
95	#define FIXUP_ABSOLUTE 0
96	#define FIXUP_REL_JMPTOPATCH 1
97	#define FIXUP_REL_JMPTOGUEST 2
98
99	#define PATM_ILLEGAL_DESTINATION 0xDEADBEEF
100
101	/** Size of the instruction that's used for requests from patch code (currently only call) */
102	#define PATM_ILLEGAL_INSTR_SIZE 2
103
104
105	/** No statistics counter index allocated just yet */
106	#define PATM_STAT_INDEX_NONE (uint32_t)-1
107	/** Dummy counter to handle overflows */
108	#define PATM_STAT_INDEX_DUMMY 0
109	#define PATM_STAT_INDEX_IS_VALID(a) (a != PATM_STAT_INDEX_DUMMY && a != PATM_STAT_INDEX_NONE)
110
111	#ifdef VBOX_WITH_STATISTICS
112	#define PATM_STAT_RUN_INC(pPatch) \
113	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
114	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32A++;
115	#define PATM_STAT_FAULT_INC(pPatch) \
116	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
117	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32B++;
118	#else
119	#define PATM_STAT_RUN_INC(pPatch) do { } while (0)
120	#define PATM_STAT_FAULT_INC(pPatch) do { } while (0)
121	#endif
122
123	/** Maximum number of stat counters. */
124	#define PATM_STAT_MAX_COUNTERS 1024
125	/** Size of memory allocated for patch statistics. */
126	#define PATM_STAT_MEMSIZE (PATM_STAT_MAX_COUNTERS*sizeof(STAMRATIOU32))
127
128	/** aCpus[0].fLocalForcedActions fixup (must be uneven to avoid theoretical clashes with valid pointers) */
129	#define PATM_FIXUP_CPU_FF_ACTION 0xffffff01
130	/** default cpuid pointer fixup */
131	#define PATM_FIXUP_CPUID_DEFAULT 0xffffff03
132	/** standard cpuid pointer fixup */
133	#define PATM_FIXUP_CPUID_STANDARD 0xffffff05
134	/** extended cpuid pointer fixup */
135	#define PATM_FIXUP_CPUID_EXTENDED 0xffffff07
136	/** centaur cpuid pointer fixup */
137	#define PATM_FIXUP_CPUID_CENTAUR 0xffffff09
138
139	typedef struct
140	{
141	/** The key is a HC virtual address. */
142	AVLPVNODECORE Core;
143
144	uint32_t uType;
145	R3PTRTYPE(uint8_t *) pRelocPos;
146	RTRCPTR pSource;
147	RTRCPTR pDest;
148	} RELOCREC, *PRELOCREC;
149
150	/* forward decl */
151	struct _PATCHINFO;
152
153	/* Cache record for guest to host pointer conversions. */
154	typedef struct
155	{
156	R3PTRTYPE(uint8_t *) pPageLocStartHC;
157	RCPTRTYPE(uint8_t *) pGuestLoc;
158	R3PTRTYPE(void *) pPatch;
159	PGMPAGEMAPLOCK Lock;
160	} PATMP2GLOOKUPREC, *PPATMP2GLOOKUPREC;
161
162	/* Obsolete; do not use. */
163	typedef struct
164	{
165	R3PTRTYPE(uint8_t *) pPatchLocStartHC;
166	R3PTRTYPE(uint8_t *) pPatchLocEndHC;
167	RCPTRTYPE(uint8_t *) pGuestLoc;
168	uint32_t opsize;
169	} PATMP2GLOOKUPREC_OBSOLETE;
170
171	typedef struct
172	{
173	/** The key is a pointer to a JUMPREC structure. */
174	AVLPVNODECORE Core;
175
176	R3PTRTYPE(uint8_t *) pJumpHC;
177	RCPTRTYPE(uint8_t *) pTargetGC;
178	uint32_t offDispl;
179	uint32_t opcode;
180	} JUMPREC, *PJUMPREC;
181
182	/**
183	* Patch to guest lookup type (single or both direction)
184	*/
185	typedef enum
186	{
187	PATM_LOOKUP_PATCH2GUEST, /* patch to guest */
188	PATM_LOOKUP_BOTHDIR /* guest to patch + patch to guest */
189	} PATM_LOOKUP_TYPE;
190
191	/**
192	* Patch to guest address lookup record
193	*/
194	typedef struct RECPATCHTOGUEST
195	{
196	/** The key is an offset inside the patch memory block. */
197	AVLU32NODECORE Core;
198
199	RTRCPTR pOrgInstrGC;
200	PATM_LOOKUP_TYPE enmType;
201	bool fDirty;
202	bool fJumpTarget;
203	uint8_t u8DirtyOpcode; /* original opcode before writing 0xCC there to mark it dirty */
204	} RECPATCHTOGUEST, *PRECPATCHTOGUEST;
205
206	/**
207	* Guest to patch address lookup record
208	*/
209	typedef struct RECGUESTTOPATCH
210	{
211	/** The key is a GC virtual address. */
212	AVLU32NODECORE Core;
213
214	/** Patch offset (relative to PATM::pPatchMemGC / PATM::pPatchMemHC). */
215	uint32_t PatchOffset;
216	} RECGUESTTOPATCH, *PRECGUESTTOPATCH;
217
218	/**
219	* Temporary information used in ring 3 only; no need to waste memory in the patch record itself.
220	*/
221	typedef struct
222	{
223	/* Temporary tree for storing the addresses of illegal instructions. */
224	R3PTRTYPE(PAVLPVNODECORE) IllegalInstrTree;
225	uint32_t nrIllegalInstr;
226
227	int32_t nrJumps;
228	uint32_t nrRetInstr;
229
230	/* Temporary tree of encountered jumps. (debug only) */
231	R3PTRTYPE(PAVLPVNODECORE) DisasmJumpTree;
232
233	int32_t nrCalls;
234
235	/** Last original guest instruction pointer; used for disassembly log. */
236	RTRCPTR pLastDisasmInstrGC;
237
238	/** Keeping track of multiple ret instructions. */
239	RTRCPTR pPatchRetInstrGC;
240	uint32_t uPatchRetParam1;
241	} PATCHINFOTEMP, *PPATCHINFOTEMP;
242
243	typedef struct _PATCHINFO
244	{
245	uint32_t uState;
246	uint32_t uOldState;
247	DISCPUMODE uOpMode;
248
249	/* GC pointer of privileged instruction */
250	RCPTRTYPE(uint8_t *) pPrivInstrGC;
251	R3PTRTYPE(uint8_t ) unusedHC; / todo Can't remove due to structure size dependencies in saved states. */
252	uint8_t aPrivInstr[MAX_INSTR_SIZE];
253	uint32_t cbPrivInstr;
254	uint32_t opcode; //opcode for priv instr (OP_*)
255	uint32_t cbPatchJump; //patch jump size
256
257	/* Only valid for PATMFL_JUMP_CONFLICT patches */
258	RTRCPTR pPatchJumpDestGC;
259
260	RTGCUINTPTR32 pPatchBlockOffset;
261	uint32_t cbPatchBlockSize;
262	uint32_t uCurPatchOffset;
263	#if HC_ARCH_BITS == 64
264	uint32_t Alignment0; /*< Align flags correctly. /
265	#endif
266
267	uint64_t flags;
268
269	/**
270	* Lowest and highest patched GC instruction address. To optimize searches.
271	*/
272	RTRCPTR pInstrGCLowest;
273	RTRCPTR pInstrGCHighest;
274
275	/* Tree of fixup records for the patch. */
276	R3PTRTYPE(PAVLPVNODECORE) FixupTree;
277	uint32_t nrFixups;
278
279	/* Tree of jumps inside the generated patch code. */
280	uint32_t nrJumpRecs;
281	R3PTRTYPE(PAVLPVNODECORE) JumpTree;
282
283	/**
284	* Lookup trees for determining the corresponding guest address of an
285	* instruction in the patch block.
286	*/
287	R3PTRTYPE(PAVLU32NODECORE) Patch2GuestAddrTree;
288	R3PTRTYPE(PAVLU32NODECORE) Guest2PatchAddrTree;
289	uint32_t nrPatch2GuestRecs;
290	#if HC_ARCH_BITS == 64
291	uint32_t Alignment1;
292	#endif
293
294	/* Unused, but can't remove due to structure size dependencies in the saved state. */
295	PATMP2GLOOKUPREC_OBSOLETE unused;
296
297	/* Temporary information during patch creation. Don't waste hypervisor memory for this. */
298	R3PTRTYPE(PPATCHINFOTEMP) pTempInfo;
299
300	/* Count the number of writes to the corresponding guest code. */
301	uint32_t cCodeWrites;
302
303	/* Count the number of invalid writes to pages monitored for the patch. */
304	//some statistics to determine if we should keep this patch activated
305	uint32_t cTraps;
306
307	uint32_t cInvalidWrites;
308
309	// Index into the uPatchRun and uPatchTrap arrays (0..MAX_PATCHES-1)
310	uint32_t uPatchIdx;
311
312	/* First opcode byte, that's overwritten when a patch is marked dirty. */
313	uint8_t bDirtyOpcode;
314	uint8_t Alignment2[7]; /*< Align the structure size on a 8-byte boundary. /
315	} PATCHINFO, *PPATCHINFO;
316
317	#define PATCHCODE_PTR_GC(pPatch) (RTRCPTR) (pVM->patm.s.pPatchMemGC + (pPatch)->pPatchBlockOffset)
318	#define PATCHCODE_PTR_HC(pPatch) (uint8_t *)(pVM->patm.s.pPatchMemHC + (pPatch)->pPatchBlockOffset)
319
320	/**
321	* Lookup record for patches
322	*/
323	typedef struct PATMPATCHREC
324	{
325	/** The key is a GC virtual address. */
326	AVLOU32NODECORE Core;
327	/** The key is a patch offset. */
328	AVLOU32NODECORE CoreOffset;
329
330	PATCHINFO patch;
331	} PATMPATCHREC, *PPATMPATCHREC;
332
333	/** Increment for allocating room for pointer array */
334	#define PATMPATCHPAGE_PREALLOC_INCREMENT 16
335
336	/**
337	* Lookup record for patch pages
338	*/
339	typedef struct PATMPATCHPAGE
340	{
341	/** The key is a GC virtual address. */
342	AVLOU32NODECORE Core;
343	/** Region to monitor. */
344	RTRCPTR pLowestAddrGC;
345	RTRCPTR pHighestAddrGC;
346	/** Number of patches for this page. */
347	uint32_t cCount;
348	/** Maximum nr of pointers in the array. */
349	uint32_t cMaxPatches;
350	/** Array of patch pointers for this page. */
351	R3PTRTYPE(PPATCHINFO *) aPatch;
352	} PATMPATCHPAGE, *PPATMPATCHPAGE;
353
354	#define PATM_PATCHREC_FROM_COREOFFSET(a) (PPATMPATCHREC)((uintptr_t)a - RT_OFFSETOF(PATMPATCHREC, CoreOffset))
355	#define PATM_PATCHREC_FROM_PATCHINFO(a) (PPATMPATCHREC)((uintptr_t)a - RT_OFFSETOF(PATMPATCHREC, patch))
356
357	typedef struct PATMTREES
358	{
359	/**
360	* AVL tree with all patches (active or disabled) sorted by guest instruction address
361	*/
362	AVLOU32TREE PatchTree;
363
364	/**
365	* AVL tree with all patches sorted by patch address (offset actually)
366	*/
367	AVLOU32TREE PatchTreeByPatchAddr;
368
369	/**
370	* AVL tree with all pages which were (partly) patched
371	*/
372	AVLOU32TREE PatchTreeByPage;
373
374	uint32_t align[1];
375	} PATMTREES, *PPATMTREES;
376
377	/**
378	* PATM VM Instance data.
379	* Changes to this must checked against the padding of the patm union in VM!
380	*/
381	typedef struct PATM
382	{
383	/** Offset to the VM structure.
384	* See PATM2VM(). */
385	RTINT offVM;
386
387	RCPTRTYPE(uint8_t *) pPatchMemGC;
388	R3PTRTYPE(uint8_t *) pPatchMemHC;
389	uint32_t cbPatchMem;
390	uint32_t offPatchMem;
391	bool fOutOfMemory;
392
393	int32_t deltaReloc;
394
395	/* GC PATM state pointers */
396	R3PTRTYPE(PPATMGCSTATE) pGCStateHC;
397	RCPTRTYPE(PPATMGCSTATE) pGCStateGC;
398
399	/** PATM stack page for call instruction execution. (2 parts: one for our private stack and one to store the original return address */
400	RCPTRTYPE(RTRCPTR *) pGCStackGC;
401	R3PTRTYPE(RTRCPTR *) pGCStackHC;
402
403	/** GC pointer to CPUMCTX structure. */
404	RCPTRTYPE(PCPUMCTX) pCPUMCtxGC;
405
406	/* GC statistics pointers */
407	RCPTRTYPE(PSTAMRATIOU32) pStatsGC;
408	R3PTRTYPE(PSTAMRATIOU32) pStatsHC;
409
410	/* Current free index value (uPatchRun/uPatchTrap arrays). */
411	uint32_t uCurrentPatchIdx;
412
413	/* Temporary counter for patch installation call depth. (in order not to go on forever) */
414	uint32_t ulCallDepth;
415
416	/** Number of page lookup records. */
417	uint32_t cPageRecords;
418
419	/**
420	* Lowest and highest patched GC instruction addresses. To optimize searches.
421	*/
422	RTRCPTR pPatchedInstrGCLowest;
423	RTRCPTR pPatchedInstrGCHighest;
424
425	/** Pointer to the patch tree for instructions replaced by 'int 3'. */
426	RCPTRTYPE(PPATMTREES) PatchLookupTreeGC;
427	R3PTRTYPE(PPATMTREES) PatchLookupTreeHC;
428
429	/** Global PATM lookup and call function (used by call patches). */
430	RTRCPTR pfnHelperCallGC;
431	/** Global PATM return function (used by ret patches). */
432	RTRCPTR pfnHelperRetGC;
433	/** Global PATM jump function (used by indirect jmp patches). */
434	RTRCPTR pfnHelperJumpGC;
435	/** Global PATM return function (used by iret patches). */
436	RTRCPTR pfnHelperIretGC;
437
438	/** Fake patch record for global functions. */
439	R3PTRTYPE(PPATMPATCHREC) pGlobalPatchRec;
440
441	/** Pointer to original sysenter handler */
442	RTRCPTR pfnSysEnterGC;
443	/** Pointer to sysenter handler trampoline */
444	RTRCPTR pfnSysEnterPatchGC;
445	/** Sysenter patch index (for stats only) */
446	uint32_t uSysEnterPatchIdx;
447
448	// GC address of fault in monitored page (set by PATMGCMonitorPage, used by PATMR3HandleMonitoredPage)
449	RTRCPTR pvFaultMonitor;
450
451	/* Temporary information for pending MMIO patch. Set in GC or R0 context. */
452	struct
453	{
454	RTGCPHYS GCPhys;
455	RTRCPTR pCachedData;
456	RTRCPTR Alignment0; /*< Align the structure size on a 8-byte boundary. /
457	} mmio;
458
459	/* Temporary storage during load/save state */
460	struct
461	{
462	R3PTRTYPE(PSSMHANDLE) pSSM;
463	uint32_t cPatches;
464	#if HC_ARCH_BITS == 64
465	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
466	#endif
467	} savedstate;
468
469	STAMCOUNTER StatNrOpcodeRead;
470	STAMCOUNTER StatDisabled;
471	STAMCOUNTER StatUnusable;
472	STAMCOUNTER StatEnabled;
473	STAMCOUNTER StatInstalled;
474	STAMCOUNTER StatInstalledFunctionPatches;
475	STAMCOUNTER StatInstalledTrampoline;
476	STAMCOUNTER StatInstalledJump;
477	STAMCOUNTER StatInt3Callable;
478	STAMCOUNTER StatInt3BlockRun;
479	STAMCOUNTER StatOverwritten;
480	STAMCOUNTER StatFixedConflicts;
481	STAMCOUNTER StatFlushed;
482	STAMCOUNTER StatPageBoundaryCrossed;
483	STAMCOUNTER StatMonitored;
484	STAMPROFILEADV StatHandleTrap;
485	STAMCOUNTER StatSwitchBack;
486	STAMCOUNTER StatSwitchBackFail;
487	STAMCOUNTER StatPATMMemoryUsed;
488	STAMCOUNTER StatDuplicateREQSuccess;
489	STAMCOUNTER StatDuplicateREQFailed;
490	STAMCOUNTER StatDuplicateUseExisting;
491	STAMCOUNTER StatFunctionFound;
492	STAMCOUNTER StatFunctionNotFound;
493	STAMPROFILEADV StatPatchWrite;
494	STAMPROFILEADV StatPatchWriteDetect;
495	STAMCOUNTER StatDirty;
496	STAMCOUNTER StatPushTrap;
497	STAMCOUNTER StatPatchWriteInterpreted;
498	STAMCOUNTER StatPatchWriteInterpretedFailed;
499
500	STAMCOUNTER StatSysEnter;
501	STAMCOUNTER StatSysExit;
502	STAMCOUNTER StatEmulIret;
503	STAMCOUNTER StatEmulIretFailed;
504
505	STAMCOUNTER StatInstrDirty;
506	STAMCOUNTER StatInstrDirtyGood;
507	STAMCOUNTER StatInstrDirtyBad;
508
509	STAMCOUNTER StatPatchPageInserted;
510	STAMCOUNTER StatPatchPageRemoved;
511
512	STAMCOUNTER StatPatchRefreshSuccess;
513	STAMCOUNTER StatPatchRefreshFailed;
514
515	STAMCOUNTER StatGenRet;
516	STAMCOUNTER StatGenRetReused;
517	STAMCOUNTER StatGenJump;
518	STAMCOUNTER StatGenCall;
519	STAMCOUNTER StatGenPopf;
520
521	STAMCOUNTER StatCheckPendingIRQ;
522
523	STAMCOUNTER StatFunctionLookupReplace;
524	STAMCOUNTER StatFunctionLookupInsert;
525	uint32_t StatU32FunctionMaxSlotsUsed;
526	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
527	} PATM, *PPATM;
528
529
530
531	DECLCALLBACK(int) patmVirtPageHandler(PVM pVM, RTGCPTR GCPtr, void pvPtr, void pvBuf, size_t cbBuf, PGMACCESSTYPE enmAccessType, void *pvUser);
532
533	DECLCALLBACK(int) patmR3Save(PVM pVM, PSSMHANDLE pSSM);
534	DECLCALLBACK(int) patmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
535
536	#ifdef IN_RING3
537	RTRCPTR patmPatchGCPtr2GuestGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t *) pPatchGC);
538	RTRCPTR patmGuestGCPtrToPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
539	RTRCPTR patmGuestGCPtrToClosestPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
540	#endif
541
542	/* Add a patch to guest lookup record
543	*
544	* @param pVM The VM to operate on.
545	* @param pPatch Patch structure ptr
546	* @param pPatchInstrHC Guest context pointer to patch block
547	* @param pInstrGC Guest context pointer to privileged instruction
548	* @param enmType Lookup type
549	* @param fDirty Dirty flag
550	*
551	*/
552	void patmr3AddP2GLookupRecord(PVM pVM, PPATCHINFO pPatch, uint8_t *pPatchInstrHC, RTRCPTR pInstrGC, PATM_LOOKUP_TYPE enmType, bool fDirty=false);
553
554	/**
555	* Insert page records for all guest pages that contain instructions that were recompiled for this patch
556	*
557	* @returns VBox status code.
558	* @param pVM The VM to operate on.
559	* @param pPatch Patch record
560	*/
561	int patmInsertPatchPages(PVM pVM, PPATCHINFO pPatch);
562
563	/**
564	* Remove page records for all guest pages that contain instructions that were recompiled for this patch
565	*
566	* @returns VBox status code.
567	* @param pVM The VM to operate on.
568	* @param pPatch Patch record
569	*/
570	int patmRemovePatchPages(PVM pVM, PPATCHINFO pPatch);
571
572	/**
573	* Returns the GC address of the corresponding patch statistics counter
574	*
575	* @returns Stat address
576	* @param pVM The VM to operate on.
577	* @param pPatch Patch structure
578	*/
579	RTRCPTR patmPatchQueryStatAddress(PVM pVM, PPATCHINFO pPatch);
580
581	/**
582	* Remove patch for privileged instruction at specified location
583	*
584	* @returns VBox status code.
585	* @param pVM The VM to operate on.
586	* @param pPatchRec Patch record
587	* @param fForceRemove Remove all patches
588	*/
589	int PATMRemovePatch(PVM pVM, PPATMPATCHREC pPatchRec, bool fForceRemove);
590
591	/**
592	* Call for analysing the instructions following the privileged instr. for compliance with our heuristics
593	*
594	* @returns VBox status code.
595	* @param pVM The VM to operate on.
596	* @param pCpu CPU disassembly state
597	* @param pInstrHC Guest context pointer to privileged instruction
598	* @param pCurInstrHC Guest context pointer to current instruction
599	* @param pCacheRec Cache record ptr
600	*
601	*/
602	typedef int (VBOXCALL PFN_PATMR3ANALYSE)(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
603
604	/**
605	* Install guest OS specific patch
606	*
607	* @returns VBox status code.
608	* @param pVM The VM to operate on
609	* @param pCpu Disassembly state of instruction.
610	* @param pInstrGC GC Instruction pointer for instruction
611	* @param pInstrHC GC Instruction pointer for instruction
612	* @param pPatchRec Patch structure
613	*
614	*/
615	int PATMInstallGuestSpecificPatch(PVM pVM, PDISCPUSTATE pCpu, RTRCPTR pInstrGC, uint8_t *pInstrHC, PPATMPATCHREC pPatchRec);
616
617
618	/**
619	* Check if the instruction is patched as a duplicated function
620	*
621	* @returns patch record
622	* @param pVM The VM to operate on.
623	* @param pInstrGC Guest context point to the instruction
624	*
625	*/
626	VMMDECL(PPATMPATCHREC) PATMQueryFunctionPatch(PVM pVM, RTRCPTR pInstrGC);
627
628
629	/**
630	* Empty the specified tree (PV tree, MMR3 heap)
631	*
632	* @param pVM The VM to operate on.
633	* @param ppTree Tree to empty
634	*/
635	void patmEmptyTree(PVM pVM, PPAVLPVNODECORE ppTree);
636
637
638	/**
639	* Empty the specified tree (U32 tree, MMR3 heap)
640	*
641	* @param pVM The VM to operate on.
642	* @param ppTree Tree to empty
643	*/
644	void patmEmptyTreeU32(PVM pVM, PPAVLU32NODECORE ppTree);
645
646
647	/**
648	* Return the name of the patched instruction
649	*
650	* @returns instruction name
651	*
652	* @param opcode DIS instruction opcode
653	* @param fPatchFlags Patch flags
654	*/
655	VMMDECL(const char *) patmGetInstructionString(uint32_t opcode, uint32_t fPatchFlags);
656
657
658	/**
659	* Read callback for disassembly function; supports reading bytes that cross a page boundary
660	*
661	* @returns VBox status code.
662	* @param pSrc GC source pointer
663	* @param pDest HC destination pointer
664	* @param size Number of bytes to read
665	* @param pvUserdata Callback specific user data (pCpu)
666	*
667	*/
668	int patmReadBytes(RTUINTPTR pSrc, uint8_t pDest, unsigned size, void pvUserdata);
669
670
671	#ifndef IN_RC
672
673	#define PATMREAD_RAWCODE 1 /* read code as-is */
674	#define PATMREAD_ORGCODE 2 /* read original guest opcode bytes; not the patched bytes */
675	#define PATMREAD_NOCHECK 4 /* don't check for patch conflicts */
676
677	/*
678	* Private structure used during disassembly
679	*/
680	typedef struct
681	{
682	PVM pVM;
683	PPATCHINFO pPatchInfo;
684	R3PTRTYPE(uint8_t *) pInstrHC;
685	RTRCPTR pInstrGC;
686	uint32_t fReadFlags;
687	} PATMDISASM, *PPATMDISASM;
688
689	inline bool PATMR3DISInstr(PVM pVM, PPATCHINFO pPatch, DISCPUSTATE *pCpu, RTRCPTR InstrGC,
690	uint8_t InstrHC, uint32_t pOpsize, char *pszOutput,
691	uint32_t fReadFlags = PATMREAD_ORGCODE)
692	{
693	PATMDISASM disinfo;
694	disinfo.pVM = pVM;
695	disinfo.pPatchInfo = pPatch;
696	disinfo.pInstrHC = InstrHC;
697	disinfo.pInstrGC = InstrGC;
698	disinfo.fReadFlags = fReadFlags;
699	(pCpu)->pfnReadBytes = patmReadBytes;
700	(pCpu)->apvUserData[0] = &disinfo;
701	return RT_SUCCESS(DISInstr(pCpu, InstrGC, 0, pOpsize, pszOutput));
702	}
703	#endif /* !IN_RC */
704
705	RT_C_DECLS_BEGIN
706	/**
707	* #PF Virtual Handler callback for Guest access a page monitored by PATM
708	*
709	* @returns VBox status code (appropriate for trap handling and GC return).
710	* @param pVM VM Handle.
711	* @param uErrorCode CPU Error code.
712	* @param pRegFrame Trap register frame.
713	* @param pvFault The fault address (cr2).
714	* @param pvRange The base address of the handled virtual range.
715	* @param offRange The offset of the access into this range.
716	* (If it's a EIP range this is the EIP, if not it's pvFault.)
717	*/
718	VMMRCDECL(int) PATMGCMonitorPage(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
719
720	/**
721	* Find patch for privileged instruction at specified location
722	*
723	* @returns Patch structure pointer if found; else NULL
724	* @param pVM The VM to operate on.
725	* @param pInstr Guest context point to instruction that might lie within 5 bytes of an existing patch jump
726	* @param fIncludeHints Include hinted patches or not
727	*
728	*/
729	PPATCHINFO PATMFindActivePatchByEntrypoint(PVM pVM, RTRCPTR pInstrGC, bool fIncludeHints=false);
730
731	/**
732	* Patch cli/sti pushf/popf instruction block at specified location
733	*
734	* @returns VBox status code.
735	* @param pVM The VM to operate on.
736	* @param pInstrGC Guest context point to privileged instruction
737	* @param pInstrHC Host context point to privileged instruction
738	* @param uOpcode Instruction opcodee
739	* @param uOpSize Size of starting instruction
740	* @param pPatchRec Patch record
741	*
742	* @note returns failure if patching is not allowed or possible
743	*
744	*/
745	VMMR3DECL(int) PATMR3PatchBlock(PVM pVM, RTRCPTR pInstrGC, R3PTRTYPE(uint8_t *) pInstrHC,
746	uint32_t uOpcode, uint32_t uOpSize, PPATMPATCHREC pPatchRec);
747
748
749	/**
750	* Replace an instruction with a breakpoint (0xCC), that is handled dynamically in the guest context.
751	*
752	* @returns VBox status code.
753	* @param pVM The VM to operate on.
754	* @param pInstrGC Guest context point to privileged instruction
755	* @param pInstrHC Host context point to privileged instruction
756	* @param pCpu Disassembly CPU structure ptr
757	* @param pPatch Patch record
758	*
759	* @note returns failure if patching is not allowed or possible
760	*
761	*/
762	VMMR3DECL(int) PATMR3PatchInstrInt3(PVM pVM, RTRCPTR pInstrGC, R3PTRTYPE(uint8_t ) pInstrHC, DISCPUSTATE pCpu, PPATCHINFO pPatch);
763
764	/**
765	* Mark patch as dirty
766	*
767	* @returns VBox status code.
768	* @param pVM The VM to operate on.
769	* @param pPatch Patch record
770	*
771	* @note returns failure if patching is not allowed or possible
772	*
773	*/
774	VMMR3DECL(int) PATMR3MarkDirtyPatch(PVM pVM, PPATCHINFO pPatch);
775
776	R3PTRTYPE(uint8_t ) PATMGCVirtToHCVirt(PVM pVM, PPATMP2GLOOKUPREC pCacheRec, RCPTRTYPE(uint8_t ) pGCPtr);
777
778	/**
779	* Calculate the branch destination
780	*
781	* @returns branch destination or 0 if failed
782	* @param pCpu Disassembly state of instruction.
783	* @param pBranchInstrGC GC pointer of branch instruction
784	*/
785	inline RTRCPTR PATMResolveBranch(PDISCPUSTATE pCpu, RTRCPTR pBranchInstrGC)
786	{
787	uint32_t disp;
788	if (pCpu->param1.flags & USE_IMMEDIATE8_REL)
789	{
790	disp = (int32_t)(char)pCpu->param1.parval;
791	}
792	else
793	if (pCpu->param1.flags & USE_IMMEDIATE16_REL)
794	{
795	disp = (int32_t)(uint16_t)pCpu->param1.parval;
796	}
797	else
798	if (pCpu->param1.flags & USE_IMMEDIATE32_REL)
799	{
800	disp = (int32_t)pCpu->param1.parval;
801	}
802	else
803	{
804	Log(("We don't support far jumps here!! (%08X)\n", pCpu->param1.flags));
805	return 0;
806	}
807	#ifdef IN_RC
808	return (RTRCPTR)((uint8_t *)pBranchInstrGC + pCpu->opsize + disp);
809	#else
810	return pBranchInstrGC + pCpu->opsize + disp;
811	#endif
812	}
813
814	RT_C_DECLS_END
815
816	#ifdef LOG_ENABLED
817	int patmr3DisasmCallback(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t *) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
818	int patmr3DisasmCodeStream(PVM pVM, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PFN_PATMR3ANALYSE pfnPATMR3Analyse, PPATMP2GLOOKUPREC pCacheRec);
819	#endif
820
821	#endif

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source: vbox/trunk/src/VBox/VMM/PATM/PATMInternal.h@ 35273

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