PATMInternal.h@ 77481

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1	/* $Id: PATMInternal.h 76585 2019-01-01 06:31:29Z vboxsync $ */
2	/** @file
3	* PATM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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 VMM_INCLUDED_SRC_include_PATMInternal_h
19	#define VMM_INCLUDED_SRC_include_PATMInternal_h
20	#ifndef RT_WITHOUT_PRAGMA_ONCE
21	# pragma once
22	#endif
23
24	#include <VBox/cdefs.h>
25	#include <VBox/types.h>
26	#include <VBox/vmm/patm.h>
27	#include <VBox/vmm/stam.h>
28	#include <VBox/dis.h>
29	#include <VBox/vmm/pgm.h>
30	#include <iprt/avl.h>
31	#include <iprt/param.h>
32	#include <VBox/log.h>
33
34
35	/** @name Saved state version numbers.
36	* @{ */
37	/** New concept of helper code (for CPUID). */
38	#define PATM_SAVED_STATE_VERSION 58
39	/** New fixup type FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
40	#define PATM_SAVED_STATE_VERSION_FORGET_THIS_ONE 57
41	/** Uses normal structure serialization with markers and everything. */
42	#define PATM_SAVED_STATE_VERSION_NO_RAW_MEM 56
43	/** Last version which saves structures as raw memory. */
44	#define PATM_SAVED_STATE_VERSION_MEM 55
45	#define PATM_SAVED_STATE_VERSION_FIXUP_HACK 54
46	#define PATM_SAVED_STATE_VERSION_FIXUP_HACK 54
47	#define PATM_SAVED_STATE_VERSION_VER16 53
48	/** @} */
49
50	/* Enable for call patching. */
51	#define PATM_ENABLE_CALL
52	#define PATCH_MEMORY_SIZE (210241024)
53	#define MAX_PATCH_SIZE (1024*4)
54
55	/*
56	* Internal patch type flags (starts at RT_BIT(11))
57	*/
58
59	#define PATMFL_CHECK_SIZE RT_BIT_64(11)
60	#define PATMFL_FOUND_PATCHEND RT_BIT_64(12)
61	#define PATMFL_SINGLE_INSTRUCTION RT_BIT_64(13)
62	#define PATMFL_SYSENTER_XP RT_BIT_64(14)
63	#define PATMFL_JUMP_CONFLICT RT_BIT_64(15)
64	#define PATMFL_READ_ORIGINAL_BYTES RT_BIT_64(16) /** opcode might have already been patched */
65	#define PATMFL_INT3_REPLACEMENT RT_BIT_64(17)
66	#define PATMFL_SUPPORT_CALLS RT_BIT_64(18)
67	#define PATMFL_SUPPORT_INDIRECT_CALLS RT_BIT_64(19)
68	#define PATMFL_IDTHANDLER_WITHOUT_ENTRYPOINT RT_BIT_64(20) /** internal flag to avoid duplicate entrypoints */
69	#define PATMFL_INHIBIT_IRQS RT_BIT_64(21) /** temporary internal flag */
70	#define PATMFL_GENERATE_JUMPTOGUEST RT_BIT_64(22) /** temporary internal flag */
71	#define PATMFL_RECOMPILE_NEXT RT_BIT_64(23) /** for recompilation of the next instruction */
72	#define PATMFL_CODE_MONITORED RT_BIT_64(24) /** code pages of guest monitored for self-modifying code. */
73	#define PATMFL_CALLABLE_AS_FUNCTION RT_BIT_64(25) /** cli and pushf blocks can be used as callable functions. */
74	#define PATMFL_GLOBAL_FUNCTIONS RT_BIT_64(26) /** fake patch for global patm functions. */
75	#define PATMFL_TRAMPOLINE RT_BIT_64(27) /** trampoline patch that clears PATM_ASMFIX_INTERRUPTFLAG and jumps to patch destination */
76	#define PATMFL_GENERATE_SETPIF RT_BIT_64(28) /** generate set PIF for the next instruction */
77	#define PATMFL_INSTR_HINT RT_BIT_64(29) /** Generate patch, but don't activate it. */
78	#define PATMFL_PATCHED_GUEST_CODE RT_BIT_64(30) /** Patched guest code. */
79	#define PATMFL_MUST_INSTALL_PATCHJMP RT_BIT_64(31) /** Need to patch guest code in order to activate patch. */
80	#define PATMFL_INT3_REPLACEMENT_BLOCK RT_BIT_64(32) /** int 3 replacement block */
81	#define PATMFL_EXTERNAL_JUMP_INSIDE RT_BIT_64(33) /** A trampoline patch was created that jumps to an instruction in the patch block */
82	#define PATMFL_CODE_REFERENCED RT_BIT_64(34) /** patch block referenced (called, jumped to) by another patch. */
83
84	#define SIZEOF_NEARJUMP8 2 //opcode byte + 1 byte relative offset
85	#define SIZEOF_NEARJUMP16 3 //opcode byte + 2 byte relative offset
86	#define SIZEOF_NEARJUMP32 5 //opcode byte + 4 byte relative offset
87	#define SIZEOF_NEAR_COND_JUMP32 6 //0xF + opcode byte + 4 byte relative offset
88
89	#define MAX_INSTR_SIZE 16
90
91	/* Patch states */
92	#define PATCH_REFUSED 1
93	#define PATCH_DISABLED 2
94	#define PATCH_ENABLED 4
95	#define PATCH_UNUSABLE 8
96	#define PATCH_DIRTY 16
97	#define PATCH_DISABLE_PENDING 32
98
99
100	#define MAX_PATCH_TRAPS 4
101	#define PATM_MAX_CALL_DEPTH 32
102	/* Maximum nr of writes before a patch is marked dirty. (disabled) */
103	#define PATM_MAX_CODE_WRITES 32
104	/* Maximum nr of invalid writes before a patch is disabled. */
105	#define PATM_MAX_INVALID_WRITES 16384
106
107	/** @name FIXUP_XXX - RELOCREC::uType values.
108	* @{ */
109	/** Absolute fixup. With one exception (MMIO cache), this does not take any
110	* source or destination. @sa FIXUP_ABSOLUTE_ASM. */
111	#define FIXUP_ABSOLUTE 0
112	#define FIXUP_REL_JMPTOPATCH 1
113	#define FIXUP_REL_JMPTOGUEST 2
114	/** Absolute fixup in patch assembly code template.
115	*
116	* The source and desination addresses both set to the patch fixup type (see
117	* PATM_IS_ASMFIX and friends in PATMA.h). This is recent addition (CPUID
118	* subleaf code), so when loading older saved states this is usally represented
119	* as FIXUP_ABSOLUTE. */
120	#define FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL 3
121	/** Constant value that only needs fixing up when loading state. Structure
122	* size, member offset, or similar. The source and destination address are set
123	* like for FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
124	#define FIXUP_CONSTANT_IN_PATCH_ASM_TMPL 4
125	/** Relative call to a patch helper routine in VMMRC. The source and destination
126	* address are set like for FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
127	#define FIXUP_REL_HELPER_IN_PATCH_ASM_TMPL 5
128	/** @} */
129
130
131	#define PATM_ILLEGAL_DESTINATION 0xDEADBEEF
132
133	/** Size of the instruction that's used for requests from patch code (currently only call) */
134	#define PATM_ILLEGAL_INSTR_SIZE 2
135
136
137	/** No statistics counter index allocated just yet */
138	#define PATM_STAT_INDEX_NONE (uint32_t)-1
139	/** Dummy counter to handle overflows */
140	#define PATM_STAT_INDEX_DUMMY 0
141	#define PATM_STAT_INDEX_IS_VALID(a) (a != PATM_STAT_INDEX_DUMMY && a != PATM_STAT_INDEX_NONE)
142
143	#ifdef VBOX_WITH_STATISTICS
144	#define PATM_STAT_RUN_INC(pPatch) \
145	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
146	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32A++;
147	#define PATM_STAT_FAULT_INC(pPatch) \
148	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
149	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32B++;
150	#else
151	#define PATM_STAT_RUN_INC(pPatch) do { } while (0)
152	#define PATM_STAT_FAULT_INC(pPatch) do { } while (0)
153	#endif
154
155	/** Maximum number of stat counters. */
156	#define PATM_STAT_MAX_COUNTERS 1024
157	/** Size of memory allocated for patch statistics. */
158	#define PATM_STAT_MEMSIZE (PATM_STAT_MAX_COUNTERS*sizeof(STAMRATIOU32))
159
160	/** aCpus[0].fLocalForcedActions fixup (must be uneven to avoid theoretical clashes with valid pointers) */
161	#define PATM_FIXUP_CPU_FF_ACTION 0xffffff01
162	/** default cpuid pointer fixup */
163	#define PATM_FIXUP_CPUID_DEFAULT 0xffffff03
164	/** standard cpuid pointer fixup */
165	#define PATM_FIXUP_CPUID_STANDARD 0xffffff05
166	/** extended cpuid pointer fixup */
167	#define PATM_FIXUP_CPUID_EXTENDED 0xffffff07
168	/** centaur cpuid pointer fixup */
169	#define PATM_FIXUP_CPUID_CENTAUR 0xffffff09
170
171	typedef struct
172	{
173	/** The key is a HC virtual address. */
174	AVLPVNODECORE Core;
175
176	uint32_t uType;
177	R3PTRTYPE(uint8_t *) pRelocPos;
178	RTRCPTR pSource;
179	RTRCPTR pDest;
180	} RELOCREC, *PRELOCREC;
181
182	/* Cache record for guest to host pointer conversions. */
183	typedef struct
184	{
185	R3PTRTYPE(uint8_t *) pPageLocStartHC;
186	RCPTRTYPE(uint8_t *) pGuestLoc;
187	R3PTRTYPE(void *) pPatch;
188	PGMPAGEMAPLOCK Lock;
189	} PATMP2GLOOKUPREC, *PPATMP2GLOOKUPREC;
190
191	/* Obsolete; do not use. */
192	typedef struct
193	{
194	R3PTRTYPE(uint8_t *) pPatchLocStartHC;
195	R3PTRTYPE(uint8_t *) pPatchLocEndHC;
196	RCPTRTYPE(uint8_t *) pGuestLoc;
197	uint32_t opsize;
198	} PATMP2GLOOKUPREC_OBSOLETE;
199
200	typedef struct
201	{
202	/** The key is a pointer to a JUMPREC structure. */
203	AVLPVNODECORE Core;
204
205	R3PTRTYPE(uint8_t *) pJumpHC;
206	RCPTRTYPE(uint8_t *) pTargetGC;
207	uint32_t offDispl;
208	uint32_t opcode;
209	} JUMPREC, *PJUMPREC;
210
211	/**
212	* Patch to guest lookup type (single or both direction)
213	*/
214	typedef enum
215	{
216	/** patch to guest */
217	PATM_LOOKUP_PATCH2GUEST,
218	/** guest to patch + patch to guest */
219	PATM_LOOKUP_BOTHDIR
220	} PATM_LOOKUP_TYPE;
221
222	/**
223	* Patch to guest address lookup record.
224	*/
225	typedef struct RECPATCHTOGUEST
226	{
227	/** The key is an offset inside the patch memory block. */
228	AVLU32NODECORE Core;
229	/** GC address of the guest instruction this record is for. */
230	RTRCPTR pOrgInstrGC;
231	/** Patch to guest lookup type. */
232	PATM_LOOKUP_TYPE enmType;
233	/** Flag whether the original instruction was changed by the guest. */
234	bool fDirty;
235	/** Flag whether this guest instruction is a jump target from
236	* a trampoline patch. */
237	bool fJumpTarget;
238	/** Original opcode before writing 0xCC there to mark it dirty. */
239	uint8_t u8DirtyOpcode;
240	} RECPATCHTOGUEST, *PRECPATCHTOGUEST;
241
242	/**
243	* Guest to patch address lookup record
244	*/
245	typedef struct RECGUESTTOPATCH
246	{
247	/** The key is a GC virtual address. */
248	AVLU32NODECORE Core;
249	/** Patch offset (relative to PATM::pPatchMemGC / PATM::pPatchMemHC). */
250	uint32_t PatchOffset;
251	} RECGUESTTOPATCH, *PRECGUESTTOPATCH;
252
253	/**
254	* Temporary information used in ring 3 only; no need to waste memory in the patch record itself.
255	*/
256	typedef struct
257	{
258	/* Temporary tree for storing the addresses of illegal instructions. */
259	R3PTRTYPE(PAVLPVNODECORE) IllegalInstrTree;
260	uint32_t nrIllegalInstr;
261
262	int32_t nrJumps;
263	uint32_t nrRetInstr;
264
265	/* Temporary tree of encountered jumps. (debug only) */
266	R3PTRTYPE(PAVLPVNODECORE) DisasmJumpTree;
267
268	int32_t nrCalls;
269
270	/** Last original guest instruction pointer; used for disassembly log. */
271	RTRCPTR pLastDisasmInstrGC;
272
273	/** Keeping track of multiple ret instructions. */
274	RTRCPTR pPatchRetInstrGC;
275	uint32_t uPatchRetParam1;
276	} PATCHINFOTEMP, *PPATCHINFOTEMP;
277
278	/** Forward declaration for a pointer to a trampoline patch record. */
279	typedef struct TRAMPREC *PTRAMPREC;
280
281	/**
282	* Patch information.
283	*/
284	typedef struct PATCHINFO
285	{
286	/** Current patch state (enabled, disabled, etc.). */
287	uint32_t uState;
288	/** Previous patch state. Used when enabling a disabled patch. */
289	uint32_t uOldState;
290	/** CPU mode (16bit or 32bit). */
291	DISCPUMODE uOpMode;
292	/** GC pointer of privileged instruction */
293	RCPTRTYPE(uint8_t *) pPrivInstrGC;
294	/** @todo: Can't remove due to structure size dependencies in saved states. */
295	R3PTRTYPE(uint8_t *) unusedHC;
296	/** Original privileged guest instructions overwritten by the jump patch. */
297	uint8_t aPrivInstr[MAX_INSTR_SIZE];
298	/** Number of valid bytes in the instruction buffer. */
299	uint32_t cbPrivInstr;
300	/** Opcode for priv instr (OP_). /
301	uint32_t opcode;
302	/** Size of the patch jump in the guest code. */
303	uint32_t cbPatchJump;
304	/** Only valid for PATMFL_JUMP_CONFLICT patches */
305	RTRCPTR pPatchJumpDestGC;
306	/** Offset of the patch code from the beginning of the patch memory area. */
307	RTGCUINTPTR32 pPatchBlockOffset;
308	/** Size of the patch code in bytes. */
309	uint32_t cbPatchBlockSize;
310	/** Current offset of the patch starting from pPatchBlockOffset.
311	* Used during patch creation. */
312	uint32_t uCurPatchOffset;
313	#if HC_ARCH_BITS == 64
314	uint32_t Alignment0; /*< Align flags correctly. /
315	#endif
316	/** PATM flags (see PATMFL_). /
317	uint64_t flags;
318	/**
319	* Lowest and highest patched GC instruction address. To optimize searches.
320	*/
321	RTRCPTR pInstrGCLowest;
322	RTRCPTR pInstrGCHighest;
323	/* Tree of fixup records for the patch. */
324	R3PTRTYPE(PAVLPVNODECORE) FixupTree;
325	uint32_t nrFixups;
326	/* Tree of jumps inside the generated patch code. */
327	uint32_t nrJumpRecs;
328	R3PTRTYPE(PAVLPVNODECORE) JumpTree;
329	/**
330	* Lookup trees for determining the corresponding guest address of an
331	* instruction in the patch block.
332	*/
333	R3PTRTYPE(PAVLU32NODECORE) Patch2GuestAddrTree;
334	R3PTRTYPE(PAVLU32NODECORE) Guest2PatchAddrTree;
335	uint32_t nrPatch2GuestRecs;
336	#if HC_ARCH_BITS == 64
337	uint32_t Alignment1;
338	#endif
339	/** Unused, but can't remove due to structure size dependencies in the saved state. */
340	PATMP2GLOOKUPREC_OBSOLETE unused;
341	/** Temporary information during patch creation. Don't waste hypervisor memory for this. */
342	R3PTRTYPE(PPATCHINFOTEMP) pTempInfo;
343	/** List of trampoline patches referencing this patch.
344	* Used when refreshing the patch. (Only for function duplicates) */
345	R3PTRTYPE(PTRAMPREC) pTrampolinePatchesHead;
346	/** Count the number of writes to the corresponding guest code. */
347	uint32_t cCodeWrites;
348	/** Some statistics to determine if we should keep this patch activated. */
349	uint32_t cTraps;
350	/** Count the number of invalid writes to pages monitored for the patch. */
351	uint32_t cInvalidWrites;
352	/** Index into the uPatchRun and uPatchTrap arrays (0..MAX_PATCHES-1) */
353	uint32_t uPatchIdx;
354	/** First opcode byte, that's overwritten when a patch is marked dirty. */
355	uint8_t bDirtyOpcode;
356	/** Align the structure size on a 8-byte boundary. */
357	uint8_t Alignment2[HC_ARCH_BITS == 64 ? 7 : 3];
358	} PATCHINFO, *PPATCHINFO;
359
360	#define PATCHCODE_PTR_GC(pPatch) (RTRCPTR) (pVM->patm.s.pPatchMemGC + (pPatch)->pPatchBlockOffset)
361	#define PATCHCODE_PTR_HC(pPatch) (uint8_t *)(pVM->patm.s.pPatchMemHC + (pPatch)->pPatchBlockOffset)
362
363	/**
364	* Lookup record for patches
365	*/
366	typedef struct PATMPATCHREC
367	{
368	/** The key is a GC virtual address. */
369	AVLOU32NODECORE Core;
370	/** The key is a patch offset. */
371	AVLOU32NODECORE CoreOffset;
372	/** The patch information. */
373	PATCHINFO patch;
374	} PATMPATCHREC, *PPATMPATCHREC;
375
376	/**
377	* Record for a trampoline patch.
378	*/
379	typedef struct TRAMPREC
380	{
381	/** Pointer to the next trampoline patch. */
382	struct TRAMPREC *pNext;
383	/** Pointer to the trampoline patch record. */
384	PPATMPATCHREC pPatchTrampoline;
385	} TRAMPREC;
386
387	/** Increment for allocating room for pointer array */
388	#define PATMPATCHPAGE_PREALLOC_INCREMENT 16
389
390	/**
391	* Lookup record for patch pages
392	*/
393	typedef struct PATMPATCHPAGE
394	{
395	/** The key is a GC virtual address. */
396	AVLOU32NODECORE Core;
397	/** Region to monitor. */
398	RTRCPTR pLowestAddrGC;
399	RTRCPTR pHighestAddrGC;
400	/** Number of patches for this page. */
401	uint32_t cCount;
402	/** Maximum nr of pointers in the array. */
403	uint32_t cMaxPatches;
404	/** Array of patch pointers for this page. */
405	R3PTRTYPE(PPATCHINFO *) papPatch;
406	} PATMPATCHPAGE, *PPATMPATCHPAGE;
407
408	#define PATM_PATCHREC_FROM_COREOFFSET(a) (PPATMPATCHREC)((uintptr_t)a - RT_UOFFSETOF(PATMPATCHREC, CoreOffset))
409	#define PATM_PATCHREC_FROM_PATCHINFO(a) (PPATMPATCHREC)((uintptr_t)a - RT_UOFFSETOF(PATMPATCHREC, patch))
410
411	/**
412	* AVL trees used by PATM.
413	*/
414	typedef struct PATMTREES
415	{
416	/**
417	* AVL tree with all patches (active or disabled) sorted by guest instruction address
418	*/
419	AVLOU32TREE PatchTree;
420
421	/**
422	* AVL tree with all patches sorted by patch address (offset actually)
423	*/
424	AVLOU32TREE PatchTreeByPatchAddr;
425
426	/**
427	* AVL tree with all pages which were (partly) patched
428	*/
429	AVLOU32TREE PatchTreeByPage;
430
431	uint32_t align[1];
432	} PATMTREES, *PPATMTREES;
433
434	/**
435	* PATM VM Instance data.
436	* Changes to this must checked against the padding of the patm union in VM!
437	*/
438	typedef struct PATM
439	{
440	/** Offset to the VM structure.
441	* See PATM2VM(). */
442	RTINT offVM;
443	/** Pointer to the patch memory area (GC) */
444	RCPTRTYPE(uint8_t *) pPatchMemGC;
445	/** Pointer to the patch memory area (HC) */
446	R3PTRTYPE(uint8_t *) pPatchMemHC;
447	/** Size of the patch memory area in bytes. */
448	uint32_t cbPatchMem;
449	/** Relative offset to the next free byte starting from the start of the region. */
450	uint32_t offPatchMem;
451	/** Flag whether PATM ran out of patch memory. */
452	bool fOutOfMemory;
453	/** Delta to the new relocated HMA area.
454	* Used only during PATMR3Relocate(). */
455	int32_t deltaReloc;
456
457	/** The ring-3 address of the PatchHlp segment (for PATMReadPatchCode). */
458	R3PTRTYPE(uint8_t *) pbPatchHelpersR3;
459	/** The raw-mode address of the PatchHlp segment. */
460	RCPTRTYPE(uint8_t *) pbPatchHelpersRC;
461	/** Size of the PatchHlp segment containing the callable helper code. */
462	uint32_t cbPatchHelpers;
463
464	/** GC PATM state pointer - HC pointer. */
465	R3PTRTYPE(PPATMGCSTATE) pGCStateHC;
466	/** GC PATM state pointer - RC pointer. */
467	RCPTRTYPE(PPATMGCSTATE) pGCStateGC;
468
469	/** PATM stack page for call instruction execution.
470	* 2 parts: one for our private stack and one to store the original return
471	* address. */
472	RCPTRTYPE(RTRCPTR *) pGCStackGC;
473	/** HC pointer of the PATM stack page. */
474	R3PTRTYPE(RTRCPTR *) pGCStackHC;
475	/** GC pointer to CPUMCTX structure. */
476	RCPTRTYPE(PCPUMCTX) pCPUMCtxGC;
477
478	/** GC statistics pointer. */
479	RCPTRTYPE(PSTAMRATIOU32) pStatsGC;
480	/** HC statistics pointer. */
481	R3PTRTYPE(PSTAMRATIOU32) pStatsHC;
482
483	/** Current free index value (uPatchRun/uPatchTrap arrays). */
484	uint32_t uCurrentPatchIdx;
485	/** Temporary counter for patch installation call depth. (in order not to go on forever) */
486	uint32_t ulCallDepth;
487	/** Number of page lookup records. */
488	uint32_t cPageRecords;
489	/** Lowest and highest patched GC instruction addresses. To optimize searches. */
490	RTRCPTR pPatchedInstrGCLowest;
491	RTRCPTR pPatchedInstrGCHighest;
492	/** Pointer to the patch tree for instructions replaced by 'int 3'. */
493	RCPTRTYPE(PPATMTREES) PatchLookupTreeGC;
494	R3PTRTYPE(PPATMTREES) PatchLookupTreeHC;
495	/** Global PATM lookup and call function (used by call patches). */
496	RTRCPTR pfnHelperCallGC;
497	/** Global PATM return function (used by ret patches). */
498	RTRCPTR pfnHelperRetGC;
499	/** Global PATM jump function (used by indirect jmp patches). */
500	RTRCPTR pfnHelperJumpGC;
501	/** Global PATM return function (used by iret patches). */
502	RTRCPTR pfnHelperIretGC;
503	/** Fake patch record for global functions. */
504	R3PTRTYPE(PPATMPATCHREC) pGlobalPatchRec;
505	/** Pointer to original sysenter handler */
506	RTRCPTR pfnSysEnterGC;
507	/** Pointer to sysenter handler trampoline */
508	RTRCPTR pfnSysEnterPatchGC;
509	/** Sysenter patch index (for stats only) */
510	uint32_t uSysEnterPatchIdx;
511	/** GC address of fault in monitored page (set by PATMGCMonitorPage, used by PATMR3HandleMonitoredPage)- */
512	RTRCPTR pvFaultMonitor;
513	/** Temporary information for pending MMIO patch. Set in GC or R0 context. */
514	struct
515	{
516	RTGCPHYS GCPhys;
517	RTRCPTR pCachedData;
518	RTRCPTR Alignment0; /*< Align the structure size on a 8-byte boundary. /
519	} mmio;
520	/** Temporary storage during load/save state */
521	struct
522	{
523	R3PTRTYPE(PSSMHANDLE) pSSM;
524	uint32_t cPatches;
525	#if HC_ARCH_BITS == 64
526	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
527	#endif
528	} savedstate;
529
530	/** Debug module for the patch memory. */
531	RTDBGMOD hDbgModPatchMem;
532
533	/** Virtual page access handler type (patmVirtPageHandler,
534	* PATMGCMonitorPage). */
535	PGMVIRTHANDLERTYPE hMonitorPageType;
536
537	/** Align statistics on a 8 byte boundary. */
538	uint32_t u32Alignment1;
539
540	STAMCOUNTER StatNrOpcodeRead;
541	STAMCOUNTER StatDisabled;
542	STAMCOUNTER StatUnusable;
543	STAMCOUNTER StatEnabled;
544	STAMCOUNTER StatInstalled;
545	STAMCOUNTER StatInstalledFunctionPatches;
546	STAMCOUNTER StatInstalledTrampoline;
547	STAMCOUNTER StatInstalledJump;
548	STAMCOUNTER StatInt3Callable;
549	STAMCOUNTER StatInt3BlockRun;
550	STAMCOUNTER StatOverwritten;
551	STAMCOUNTER StatFixedConflicts;
552	STAMCOUNTER StatFlushed;
553	STAMCOUNTER StatPageBoundaryCrossed;
554	STAMCOUNTER StatMonitored;
555	STAMPROFILEADV StatHandleTrap;
556	STAMCOUNTER StatSwitchBack;
557	STAMCOUNTER StatSwitchBackFail;
558	STAMCOUNTER StatPATMMemoryUsed;
559	STAMCOUNTER StatDuplicateREQSuccess;
560	STAMCOUNTER StatDuplicateREQFailed;
561	STAMCOUNTER StatDuplicateUseExisting;
562	STAMCOUNTER StatFunctionFound;
563	STAMCOUNTER StatFunctionNotFound;
564	STAMPROFILEADV StatPatchWrite;
565	STAMPROFILEADV StatPatchWriteDetect;
566	STAMCOUNTER StatDirty;
567	STAMCOUNTER StatPushTrap;
568	STAMCOUNTER StatPatchWriteInterpreted;
569	STAMCOUNTER StatPatchWriteInterpretedFailed;
570
571	STAMCOUNTER StatSysEnter;
572	STAMCOUNTER StatSysExit;
573	STAMCOUNTER StatEmulIret;
574	STAMCOUNTER StatEmulIretFailed;
575
576	STAMCOUNTER StatInstrDirty;
577	STAMCOUNTER StatInstrDirtyGood;
578	STAMCOUNTER StatInstrDirtyBad;
579
580	STAMCOUNTER StatPatchPageInserted;
581	STAMCOUNTER StatPatchPageRemoved;
582
583	STAMCOUNTER StatPatchRefreshSuccess;
584	STAMCOUNTER StatPatchRefreshFailed;
585
586	STAMCOUNTER StatGenRet;
587	STAMCOUNTER StatGenRetReused;
588	STAMCOUNTER StatGenJump;
589	STAMCOUNTER StatGenCall;
590	STAMCOUNTER StatGenPopf;
591
592	STAMCOUNTER StatCheckPendingIRQ;
593
594	STAMCOUNTER StatFunctionLookupReplace;
595	STAMCOUNTER StatFunctionLookupInsert;
596	uint32_t StatU32FunctionMaxSlotsUsed;
597	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
598	} PATM, *PPATM;
599
600
601
602	DECLCALLBACK(int) patmR3Save(PVM pVM, PSSMHANDLE pSSM);
603	DECLCALLBACK(int) patmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
604
605	#ifdef IN_RING3
606	RTRCPTR patmPatchGCPtr2GuestGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t *) pPatchGC);
607	RTRCPTR patmGuestGCPtrToPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
608	RTRCPTR patmGuestGCPtrToClosestPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
609	#endif
610
611	void patmR3AddP2GLookupRecord(PVM pVM, PPATCHINFO pPatch, uint8_t *pPatchInstrHC, RTRCPTR pInstrGC,
612	PATM_LOOKUP_TYPE enmType, bool fDirty = false);
613	int patmInsertPatchPages(PVM pVM, PPATCHINFO pPatch);
614	RTRCPTR patmPatchQueryStatAddress(PVM pVM, PPATCHINFO pPatch);
615	int patmR3RemovePatch(PVM pVM, PPATMPATCHREC pPatchRec, bool fForceRemove);
616
617	/**
618	* Call for analysing the instructions following the privileged instr. for compliance with our heuristics
619	*
620	* @returns VBox status code.
621	* @param pVM The cross context VM structure.
622	* @param pCpu CPU disassembly state
623	* @param pInstrHC Guest context pointer to privileged instruction
624	* @param pCurInstrHC Guest context pointer to current instruction
625	* @param pCacheRec Cache record ptr
626	*
627	*/
628	typedef int (VBOXCALL PFN_PATMR3ANALYSE)(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
629
630	int patmR3InstallGuestSpecificPatch(PVM pVM, PDISCPUSTATE pCpu, RTRCPTR pInstrGC, uint8_t *pInstrHC, PPATMPATCHREC pPatchRec);
631	PPATMPATCHREC patmQueryFunctionPatch(PVM pVM, RTRCPTR pInstrGC);
632	const char *patmGetInstructionString(uint32_t opcode, uint32_t fPatchFlags);
633
634	PPATCHINFO patmFindActivePatchByEntrypoint(PVM pVM, RTRCPTR pInstrGC, bool fIncludeHints = false);
635	int patmR3PatchInstrInt3(PVM pVM, RTRCPTR pInstrGC, R3PTRTYPE(uint8_t ) pInstrHC, DISCPUSTATE pCpu, PPATCHINFO pPatch);
636	int patmAddBranchToLookupCache(PVM pVM, RTRCPTR pJumpTableGC, RTRCPTR pBranchTarget, RTRCUINTPTR pRelBranchPatch);
637	R3PTRTYPE(uint8_t ) patmR3GCVirtToHCVirt(PVM pVM, PPATMP2GLOOKUPREC pCacheRec, RCPTRTYPE(uint8_t ) pGCPtr);
638
639	RT_C_DECLS_BEGIN
640	DECLEXPORT(FNPGMRCVIRTPFHANDLER) patmRCVirtPagePfHandler;
641	RT_C_DECLS_END
642
643	/**
644	* Calculate the branch destination
645	*
646	* @returns branch destination or 0 if failed
647	* @param pCpu Disassembly state of instruction.
648	* @param pBranchInstrGC GC pointer of branch instruction
649	*/
650	DECLINLINE(RTRCPTR) PATMResolveBranch(PDISCPUSTATE pCpu, RTRCPTR pBranchInstrGC)
651	{
652	uint32_t disp;
653	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE8_REL)
654	{
655	disp = (int32_t)(char)pCpu->Param1.uValue;
656	}
657	else
658	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE16_REL)
659	{
660	disp = (int32_t)(uint16_t)pCpu->Param1.uValue;
661	}
662	else
663	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE32_REL)
664	{
665	disp = (int32_t)pCpu->Param1.uValue;
666	}
667	else
668	{
669	Log(("We don't support far jumps here!! (%08X)\n", pCpu->Param1.fUse));
670	return 0;
671	}
672	#ifdef IN_RC
673	return (RTRCPTR)((uint8_t *)pBranchInstrGC + pCpu->cbInstr + disp);
674	#else
675	return pBranchInstrGC + pCpu->cbInstr + disp;
676	#endif
677	}
678
679	#ifdef LOG_ENABLED
680	DECLCALLBACK(int) patmR3DisasmCallback(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t *) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
681	int patmr3DisasmCodeStream(PVM pVM, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PFN_PATMR3ANALYSE pfnPATMR3Analyse, PPATMP2GLOOKUPREC pCacheRec);
682	#endif
683
684
685	void patmR3DbgInit(PVM pVM);
686	void patmR3DbgTerm(PVM pVM);
687	void patmR3DbgReset(PVM pVM);
688	void patmR3DbgAddPatch(PVM pVM, PPATMPATCHREC pPatchRec);
689
690	PGM_ALL_CB2_PROTO(FNPGMVIRTHANDLER) patmVirtPageHandler;
691
692	#endif /* !VMM_INCLUDED_SRC_include_PATMInternal_h */

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source: vbox/trunk/src/VBox/VMM/include/PATMInternal.h@ 77481

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