PATMInternal.h@ 62145

Last change on this file since 62145 was 58122, checked in by vboxsync, 9 years ago
VMM: Made @param pVM more uniform and to the point.
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1	/* $Id: PATMInternal.h 58122 2015-10-08 17:11:58Z vboxsync $ */
2	/** @file
3	* PATM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 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/vmm/patm.h>
24	#include <VBox/vmm/stam.h>
25	#include <VBox/dis.h>
26	#include <VBox/vmm/pgm.h>
27	#include <iprt/avl.h>
28	#include <iprt/param.h>
29	#include <VBox/log.h>
30
31
32	/** @name Saved state version numbers.
33	* @{ */
34	/** New concept of helper code (for CPUID). */
35	#define PATM_SAVED_STATE_VERSION 58
36	/** New fixup type FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
37	#define PATM_SAVED_STATE_VERSION_FORGET_THIS_ONE 57
38	/** Uses normal structure serialization with markers and everything. */
39	#define PATM_SAVED_STATE_VERSION_NO_RAW_MEM 56
40	/** Last version which saves structures as raw memory. */
41	#define PATM_SAVED_STATE_VERSION_MEM 55
42	#define PATM_SAVED_STATE_VERSION_FIXUP_HACK 54
43	#define PATM_SAVED_STATE_VERSION_FIXUP_HACK 54
44	#define PATM_SAVED_STATE_VERSION_VER16 53
45	/** @} */
46
47	/* Enable for call patching. */
48	#define PATM_ENABLE_CALL
49	#define PATCH_MEMORY_SIZE (210241024)
50	#define MAX_PATCH_SIZE (1024*4)
51
52	/*
53	* Internal patch type flags (starts at RT_BIT(11))
54	*/
55
56	#define PATMFL_CHECK_SIZE RT_BIT_64(11)
57	#define PATMFL_FOUND_PATCHEND RT_BIT_64(12)
58	#define PATMFL_SINGLE_INSTRUCTION RT_BIT_64(13)
59	#define PATMFL_SYSENTER_XP RT_BIT_64(14)
60	#define PATMFL_JUMP_CONFLICT RT_BIT_64(15)
61	#define PATMFL_READ_ORIGINAL_BYTES RT_BIT_64(16) /** opcode might have already been patched */
62	#define PATMFL_INT3_REPLACEMENT RT_BIT_64(17)
63	#define PATMFL_SUPPORT_CALLS RT_BIT_64(18)
64	#define PATMFL_SUPPORT_INDIRECT_CALLS RT_BIT_64(19)
65	#define PATMFL_IDTHANDLER_WITHOUT_ENTRYPOINT RT_BIT_64(20) /** internal flag to avoid duplicate entrypoints */
66	#define PATMFL_INHIBIT_IRQS RT_BIT_64(21) /** temporary internal flag */
67	#define PATMFL_GENERATE_JUMPTOGUEST RT_BIT_64(22) /** temporary internal flag */
68	#define PATMFL_RECOMPILE_NEXT RT_BIT_64(23) /** for recompilation of the next instruction */
69	#define PATMFL_CODE_MONITORED RT_BIT_64(24) /** code pages of guest monitored for self-modifying code. */
70	#define PATMFL_CALLABLE_AS_FUNCTION RT_BIT_64(25) /** cli and pushf blocks can be used as callable functions. */
71	#define PATMFL_GLOBAL_FUNCTIONS RT_BIT_64(26) /** fake patch for global patm functions. */
72	#define PATMFL_TRAMPOLINE RT_BIT_64(27) /** trampoline patch that clears PATM_ASMFIX_INTERRUPTFLAG and jumps to patch destination */
73	#define PATMFL_GENERATE_SETPIF RT_BIT_64(28) /** generate set PIF for the next instruction */
74	#define PATMFL_INSTR_HINT RT_BIT_64(29) /** Generate patch, but don't activate it. */
75	#define PATMFL_PATCHED_GUEST_CODE RT_BIT_64(30) /** Patched guest code. */
76	#define PATMFL_MUST_INSTALL_PATCHJMP RT_BIT_64(31) /** Need to patch guest code in order to activate patch. */
77	#define PATMFL_INT3_REPLACEMENT_BLOCK RT_BIT_64(32) /** int 3 replacement block */
78	#define PATMFL_EXTERNAL_JUMP_INSIDE RT_BIT_64(33) /** A trampoline patch was created that jumps to an instruction in the patch block */
79	#define PATMFL_CODE_REFERENCED RT_BIT_64(34) /** patch block referenced (called, jumped to) by another patch. */
80
81	#define SIZEOF_NEARJUMP8 2 //opcode byte + 1 byte relative offset
82	#define SIZEOF_NEARJUMP16 3 //opcode byte + 2 byte relative offset
83	#define SIZEOF_NEARJUMP32 5 //opcode byte + 4 byte relative offset
84	#define SIZEOF_NEAR_COND_JUMP32 6 //0xF + opcode byte + 4 byte relative offset
85
86	#define MAX_INSTR_SIZE 16
87
88	/* Patch states */
89	#define PATCH_REFUSED 1
90	#define PATCH_DISABLED 2
91	#define PATCH_ENABLED 4
92	#define PATCH_UNUSABLE 8
93	#define PATCH_DIRTY 16
94	#define PATCH_DISABLE_PENDING 32
95
96
97	#define MAX_PATCH_TRAPS 4
98	#define PATM_MAX_CALL_DEPTH 32
99	/* Maximum nr of writes before a patch is marked dirty. (disabled) */
100	#define PATM_MAX_CODE_WRITES 32
101	/* Maximum nr of invalid writes before a patch is disabled. */
102	#define PATM_MAX_INVALID_WRITES 16384
103
104	/** @name FIXUP_XXX - RELOCREC::uType values.
105	* @{ */
106	/** Absolute fixup. With one exception (MMIO cache), this does not take any
107	* source or destination. @sa FIXUP_ABSOLUTE_ASM. */
108	#define FIXUP_ABSOLUTE 0
109	#define FIXUP_REL_JMPTOPATCH 1
110	#define FIXUP_REL_JMPTOGUEST 2
111	/** Absolute fixup in patch assembly code template.
112	*
113	* The source and desination addresses both set to the patch fixup type (see
114	* PATM_IS_ASMFIX and friends in PATMA.h). This is recent addition (CPUID
115	* subleaf code), so when loading older saved states this is usally represented
116	* as FIXUP_ABSOLUTE. */
117	#define FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL 3
118	/** Constant value that only needs fixing up when loading state. Structure
119	* size, member offset, or similar. The source and destination address are set
120	* like for FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
121	#define FIXUP_CONSTANT_IN_PATCH_ASM_TMPL 4
122	/** Relative call to a patch helper routine in VMMRC. The source and destination
123	* address are set like for FIXUP_ABSOLUTE_IN_PATCH_ASM_TMPL. */
124	#define FIXUP_REL_HELPER_IN_PATCH_ASM_TMPL 5
125	/** @} */
126
127
128	#define PATM_ILLEGAL_DESTINATION 0xDEADBEEF
129
130	/** Size of the instruction that's used for requests from patch code (currently only call) */
131	#define PATM_ILLEGAL_INSTR_SIZE 2
132
133
134	/** No statistics counter index allocated just yet */
135	#define PATM_STAT_INDEX_NONE (uint32_t)-1
136	/** Dummy counter to handle overflows */
137	#define PATM_STAT_INDEX_DUMMY 0
138	#define PATM_STAT_INDEX_IS_VALID(a) (a != PATM_STAT_INDEX_DUMMY && a != PATM_STAT_INDEX_NONE)
139
140	#ifdef VBOX_WITH_STATISTICS
141	#define PATM_STAT_RUN_INC(pPatch) \
142	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
143	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32A++;
144	#define PATM_STAT_FAULT_INC(pPatch) \
145	if (PATM_STAT_INDEX_IS_VALID((pPatch)->uPatchIdx)) \
146	CTXSUFF(pVM->patm.s.pStats)[(pPatch)->uPatchIdx].u32B++;
147	#else
148	#define PATM_STAT_RUN_INC(pPatch) do { } while (0)
149	#define PATM_STAT_FAULT_INC(pPatch) do { } while (0)
150	#endif
151
152	/** Maximum number of stat counters. */
153	#define PATM_STAT_MAX_COUNTERS 1024
154	/** Size of memory allocated for patch statistics. */
155	#define PATM_STAT_MEMSIZE (PATM_STAT_MAX_COUNTERS*sizeof(STAMRATIOU32))
156
157	/** aCpus[0].fLocalForcedActions fixup (must be uneven to avoid theoretical clashes with valid pointers) */
158	#define PATM_FIXUP_CPU_FF_ACTION 0xffffff01
159	/** default cpuid pointer fixup */
160	#define PATM_FIXUP_CPUID_DEFAULT 0xffffff03
161	/** standard cpuid pointer fixup */
162	#define PATM_FIXUP_CPUID_STANDARD 0xffffff05
163	/** extended cpuid pointer fixup */
164	#define PATM_FIXUP_CPUID_EXTENDED 0xffffff07
165	/** centaur cpuid pointer fixup */
166	#define PATM_FIXUP_CPUID_CENTAUR 0xffffff09
167
168	typedef struct
169	{
170	/** The key is a HC virtual address. */
171	AVLPVNODECORE Core;
172
173	uint32_t uType;
174	R3PTRTYPE(uint8_t *) pRelocPos;
175	RTRCPTR pSource;
176	RTRCPTR pDest;
177	} RELOCREC, *PRELOCREC;
178
179	/* Cache record for guest to host pointer conversions. */
180	typedef struct
181	{
182	R3PTRTYPE(uint8_t *) pPageLocStartHC;
183	RCPTRTYPE(uint8_t *) pGuestLoc;
184	R3PTRTYPE(void *) pPatch;
185	PGMPAGEMAPLOCK Lock;
186	} PATMP2GLOOKUPREC, *PPATMP2GLOOKUPREC;
187
188	/* Obsolete; do not use. */
189	typedef struct
190	{
191	R3PTRTYPE(uint8_t *) pPatchLocStartHC;
192	R3PTRTYPE(uint8_t *) pPatchLocEndHC;
193	RCPTRTYPE(uint8_t *) pGuestLoc;
194	uint32_t opsize;
195	} PATMP2GLOOKUPREC_OBSOLETE;
196
197	typedef struct
198	{
199	/** The key is a pointer to a JUMPREC structure. */
200	AVLPVNODECORE Core;
201
202	R3PTRTYPE(uint8_t *) pJumpHC;
203	RCPTRTYPE(uint8_t *) pTargetGC;
204	uint32_t offDispl;
205	uint32_t opcode;
206	} JUMPREC, *PJUMPREC;
207
208	/**
209	* Patch to guest lookup type (single or both direction)
210	*/
211	typedef enum
212	{
213	/** patch to guest */
214	PATM_LOOKUP_PATCH2GUEST,
215	/** guest to patch + patch to guest */
216	PATM_LOOKUP_BOTHDIR
217	} PATM_LOOKUP_TYPE;
218
219	/**
220	* Patch to guest address lookup record.
221	*/
222	typedef struct RECPATCHTOGUEST
223	{
224	/** The key is an offset inside the patch memory block. */
225	AVLU32NODECORE Core;
226	/** GC address of the guest instruction this record is for. */
227	RTRCPTR pOrgInstrGC;
228	/** Patch to guest lookup type. */
229	PATM_LOOKUP_TYPE enmType;
230	/** Flag whether the original instruction was changed by the guest. */
231	bool fDirty;
232	/** Flag whether this guest instruction is a jump target from
233	* a trampoline patch. */
234	bool fJumpTarget;
235	/** Original opcode before writing 0xCC there to mark it dirty. */
236	uint8_t u8DirtyOpcode;
237	} RECPATCHTOGUEST, *PRECPATCHTOGUEST;
238
239	/**
240	* Guest to patch address lookup record
241	*/
242	typedef struct RECGUESTTOPATCH
243	{
244	/** The key is a GC virtual address. */
245	AVLU32NODECORE Core;
246	/** Patch offset (relative to PATM::pPatchMemGC / PATM::pPatchMemHC). */
247	uint32_t PatchOffset;
248	} RECGUESTTOPATCH, *PRECGUESTTOPATCH;
249
250	/**
251	* Temporary information used in ring 3 only; no need to waste memory in the patch record itself.
252	*/
253	typedef struct
254	{
255	/* Temporary tree for storing the addresses of illegal instructions. */
256	R3PTRTYPE(PAVLPVNODECORE) IllegalInstrTree;
257	uint32_t nrIllegalInstr;
258
259	int32_t nrJumps;
260	uint32_t nrRetInstr;
261
262	/* Temporary tree of encountered jumps. (debug only) */
263	R3PTRTYPE(PAVLPVNODECORE) DisasmJumpTree;
264
265	int32_t nrCalls;
266
267	/** Last original guest instruction pointer; used for disassembly log. */
268	RTRCPTR pLastDisasmInstrGC;
269
270	/** Keeping track of multiple ret instructions. */
271	RTRCPTR pPatchRetInstrGC;
272	uint32_t uPatchRetParam1;
273	} PATCHINFOTEMP, *PPATCHINFOTEMP;
274
275	/** Forward declaration for a pointer to a trampoline patch record. */
276	typedef struct TRAMPREC *PTRAMPREC;
277
278	/**
279	* Patch information.
280	*/
281	typedef struct PATCHINFO
282	{
283	/** Current patch state (enabled, disabled, etc.). */
284	uint32_t uState;
285	/** Previous patch state. Used when enabling a disabled patch. */
286	uint32_t uOldState;
287	/** CPU mode (16bit or 32bit). */
288	DISCPUMODE uOpMode;
289	/** GC pointer of privileged instruction */
290	RCPTRTYPE(uint8_t *) pPrivInstrGC;
291	/** @todo: Can't remove due to structure size dependencies in saved states. */
292	R3PTRTYPE(uint8_t *) unusedHC;
293	/** Original privileged guest instructions overwritten by the jump patch. */
294	uint8_t aPrivInstr[MAX_INSTR_SIZE];
295	/** Number of valid bytes in the instruction buffer. */
296	uint32_t cbPrivInstr;
297	/** Opcode for priv instr (OP_). /
298	uint32_t opcode;
299	/** Size of the patch jump in the guest code. */
300	uint32_t cbPatchJump;
301	/** Only valid for PATMFL_JUMP_CONFLICT patches */
302	RTRCPTR pPatchJumpDestGC;
303	/** Offset of the patch code from the beginning of the patch memory area. */
304	RTGCUINTPTR32 pPatchBlockOffset;
305	/** Size of the patch code in bytes. */
306	uint32_t cbPatchBlockSize;
307	/** Current offset of the patch starting from pPatchBlockOffset.
308	* Used during patch creation. */
309	uint32_t uCurPatchOffset;
310	#if HC_ARCH_BITS == 64
311	uint32_t Alignment0; /*< Align flags correctly. /
312	#endif
313	/** PATM flags (see PATMFL_). /
314	uint64_t flags;
315	/**
316	* Lowest and highest patched GC instruction address. To optimize searches.
317	*/
318	RTRCPTR pInstrGCLowest;
319	RTRCPTR pInstrGCHighest;
320	/* Tree of fixup records for the patch. */
321	R3PTRTYPE(PAVLPVNODECORE) FixupTree;
322	uint32_t nrFixups;
323	/* Tree of jumps inside the generated patch code. */
324	uint32_t nrJumpRecs;
325	R3PTRTYPE(PAVLPVNODECORE) JumpTree;
326	/**
327	* Lookup trees for determining the corresponding guest address of an
328	* instruction in the patch block.
329	*/
330	R3PTRTYPE(PAVLU32NODECORE) Patch2GuestAddrTree;
331	R3PTRTYPE(PAVLU32NODECORE) Guest2PatchAddrTree;
332	uint32_t nrPatch2GuestRecs;
333	#if HC_ARCH_BITS == 64
334	uint32_t Alignment1;
335	#endif
336	/** Unused, but can't remove due to structure size dependencies in the saved state. */
337	PATMP2GLOOKUPREC_OBSOLETE unused;
338	/** Temporary information during patch creation. Don't waste hypervisor memory for this. */
339	R3PTRTYPE(PPATCHINFOTEMP) pTempInfo;
340	/** List of trampoline patches referencing this patch.
341	* Used when refreshing the patch. (Only for function duplicates) */
342	R3PTRTYPE(PTRAMPREC) pTrampolinePatchesHead;
343	/** Count the number of writes to the corresponding guest code. */
344	uint32_t cCodeWrites;
345	/** Some statistics to determine if we should keep this patch activated. */
346	uint32_t cTraps;
347	/** Count the number of invalid writes to pages monitored for the patch. */
348	uint32_t cInvalidWrites;
349	/** Index into the uPatchRun and uPatchTrap arrays (0..MAX_PATCHES-1) */
350	uint32_t uPatchIdx;
351	/** First opcode byte, that's overwritten when a patch is marked dirty. */
352	uint8_t bDirtyOpcode;
353	/** Align the structure size on a 8-byte boundary. */
354	uint8_t Alignment2[HC_ARCH_BITS == 64 ? 7 : 3];
355	} PATCHINFO, *PPATCHINFO;
356
357	#define PATCHCODE_PTR_GC(pPatch) (RTRCPTR) (pVM->patm.s.pPatchMemGC + (pPatch)->pPatchBlockOffset)
358	#define PATCHCODE_PTR_HC(pPatch) (uint8_t *)(pVM->patm.s.pPatchMemHC + (pPatch)->pPatchBlockOffset)
359
360	/**
361	* Lookup record for patches
362	*/
363	typedef struct PATMPATCHREC
364	{
365	/** The key is a GC virtual address. */
366	AVLOU32NODECORE Core;
367	/** The key is a patch offset. */
368	AVLOU32NODECORE CoreOffset;
369	/** The patch information. */
370	PATCHINFO patch;
371	} PATMPATCHREC, *PPATMPATCHREC;
372
373	/**
374	* Record for a trampoline patch.
375	*/
376	typedef struct TRAMPREC
377	{
378	/** Pointer to the next trampoline patch. */
379	struct TRAMPREC *pNext;
380	/** Pointer to the trampoline patch record. */
381	PPATMPATCHREC pPatchTrampoline;
382	} TRAMPREC;
383
384	/** Increment for allocating room for pointer array */
385	#define PATMPATCHPAGE_PREALLOC_INCREMENT 16
386
387	/**
388	* Lookup record for patch pages
389	*/
390	typedef struct PATMPATCHPAGE
391	{
392	/** The key is a GC virtual address. */
393	AVLOU32NODECORE Core;
394	/** Region to monitor. */
395	RTRCPTR pLowestAddrGC;
396	RTRCPTR pHighestAddrGC;
397	/** Number of patches for this page. */
398	uint32_t cCount;
399	/** Maximum nr of pointers in the array. */
400	uint32_t cMaxPatches;
401	/** Array of patch pointers for this page. */
402	R3PTRTYPE(PPATCHINFO *) papPatch;
403	} PATMPATCHPAGE, *PPATMPATCHPAGE;
404
405	#define PATM_PATCHREC_FROM_COREOFFSET(a) (PPATMPATCHREC)((uintptr_t)a - RT_OFFSETOF(PATMPATCHREC, CoreOffset))
406	#define PATM_PATCHREC_FROM_PATCHINFO(a) (PPATMPATCHREC)((uintptr_t)a - RT_OFFSETOF(PATMPATCHREC, patch))
407
408	/**
409	* AVL trees used by PATM.
410	*/
411	typedef struct PATMTREES
412	{
413	/**
414	* AVL tree with all patches (active or disabled) sorted by guest instruction address
415	*/
416	AVLOU32TREE PatchTree;
417
418	/**
419	* AVL tree with all patches sorted by patch address (offset actually)
420	*/
421	AVLOU32TREE PatchTreeByPatchAddr;
422
423	/**
424	* AVL tree with all pages which were (partly) patched
425	*/
426	AVLOU32TREE PatchTreeByPage;
427
428	uint32_t align[1];
429	} PATMTREES, *PPATMTREES;
430
431	/**
432	* PATM VM Instance data.
433	* Changes to this must checked against the padding of the patm union in VM!
434	*/
435	typedef struct PATM
436	{
437	/** Offset to the VM structure.
438	* See PATM2VM(). */
439	RTINT offVM;
440	/** Pointer to the patch memory area (GC) */
441	RCPTRTYPE(uint8_t *) pPatchMemGC;
442	/** Pointer to the patch memory area (HC) */
443	R3PTRTYPE(uint8_t *) pPatchMemHC;
444	/** Size of the patch memory area in bytes. */
445	uint32_t cbPatchMem;
446	/** Relative offset to the next free byte starting from the start of the region. */
447	uint32_t offPatchMem;
448	/** Flag whether PATM ran out of patch memory. */
449	bool fOutOfMemory;
450	/** Delta to the new relocated HMA area.
451	* Used only during PATMR3Relocate(). */
452	int32_t deltaReloc;
453
454	/** The ring-3 address of the PatchHlp segment (for PATMReadPatchCode). */
455	R3PTRTYPE(uint8_t *) pbPatchHelpersR3;
456	/** The raw-mode address of the PatchHlp segment. */
457	RCPTRTYPE(uint8_t *) pbPatchHelpersRC;
458	/** Size of the PatchHlp segment containing the callable helper code. */
459	uint32_t cbPatchHelpers;
460
461	/** GC PATM state pointer - HC pointer. */
462	R3PTRTYPE(PPATMGCSTATE) pGCStateHC;
463	/** GC PATM state pointer - RC pointer. */
464	RCPTRTYPE(PPATMGCSTATE) pGCStateGC;
465
466	/** PATM stack page for call instruction execution.
467	* 2 parts: one for our private stack and one to store the original return
468	* address. */
469	RCPTRTYPE(RTRCPTR *) pGCStackGC;
470	/** HC pointer of the PATM stack page. */
471	R3PTRTYPE(RTRCPTR *) pGCStackHC;
472	/** GC pointer to CPUMCTX structure. */
473	RCPTRTYPE(PCPUMCTX) pCPUMCtxGC;
474
475	/** GC statistics pointer. */
476	RCPTRTYPE(PSTAMRATIOU32) pStatsGC;
477	/** HC statistics pointer. */
478	R3PTRTYPE(PSTAMRATIOU32) pStatsHC;
479
480	/** Current free index value (uPatchRun/uPatchTrap arrays). */
481	uint32_t uCurrentPatchIdx;
482	/** Temporary counter for patch installation call depth. (in order not to go on forever) */
483	uint32_t ulCallDepth;
484	/** Number of page lookup records. */
485	uint32_t cPageRecords;
486	/** Lowest and highest patched GC instruction addresses. To optimize searches. */
487	RTRCPTR pPatchedInstrGCLowest;
488	RTRCPTR pPatchedInstrGCHighest;
489	/** Pointer to the patch tree for instructions replaced by 'int 3'. */
490	RCPTRTYPE(PPATMTREES) PatchLookupTreeGC;
491	R3PTRTYPE(PPATMTREES) PatchLookupTreeHC;
492	/** Global PATM lookup and call function (used by call patches). */
493	RTRCPTR pfnHelperCallGC;
494	/** Global PATM return function (used by ret patches). */
495	RTRCPTR pfnHelperRetGC;
496	/** Global PATM jump function (used by indirect jmp patches). */
497	RTRCPTR pfnHelperJumpGC;
498	/** Global PATM return function (used by iret patches). */
499	RTRCPTR pfnHelperIretGC;
500	/** Fake patch record for global functions. */
501	R3PTRTYPE(PPATMPATCHREC) pGlobalPatchRec;
502	/** Pointer to original sysenter handler */
503	RTRCPTR pfnSysEnterGC;
504	/** Pointer to sysenter handler trampoline */
505	RTRCPTR pfnSysEnterPatchGC;
506	/** Sysenter patch index (for stats only) */
507	uint32_t uSysEnterPatchIdx;
508	/** GC address of fault in monitored page (set by PATMGCMonitorPage, used by PATMR3HandleMonitoredPage)- */
509	RTRCPTR pvFaultMonitor;
510	/** Temporary information for pending MMIO patch. Set in GC or R0 context. */
511	struct
512	{
513	RTGCPHYS GCPhys;
514	RTRCPTR pCachedData;
515	RTRCPTR Alignment0; /*< Align the structure size on a 8-byte boundary. /
516	} mmio;
517	/** Temporary storage during load/save state */
518	struct
519	{
520	R3PTRTYPE(PSSMHANDLE) pSSM;
521	uint32_t cPatches;
522	#if HC_ARCH_BITS == 64
523	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
524	#endif
525	} savedstate;
526
527	/** Debug module for the patch memory. */
528	RTDBGMOD hDbgModPatchMem;
529
530	/** Virtual page access handler type (patmVirtPageHandler,
531	* PATMGCMonitorPage). */
532	PGMVIRTHANDLERTYPE hMonitorPageType;
533
534	/** Align statistics on a 8 byte boundary. */
535	uint32_t u32Alignment1;
536
537	STAMCOUNTER StatNrOpcodeRead;
538	STAMCOUNTER StatDisabled;
539	STAMCOUNTER StatUnusable;
540	STAMCOUNTER StatEnabled;
541	STAMCOUNTER StatInstalled;
542	STAMCOUNTER StatInstalledFunctionPatches;
543	STAMCOUNTER StatInstalledTrampoline;
544	STAMCOUNTER StatInstalledJump;
545	STAMCOUNTER StatInt3Callable;
546	STAMCOUNTER StatInt3BlockRun;
547	STAMCOUNTER StatOverwritten;
548	STAMCOUNTER StatFixedConflicts;
549	STAMCOUNTER StatFlushed;
550	STAMCOUNTER StatPageBoundaryCrossed;
551	STAMCOUNTER StatMonitored;
552	STAMPROFILEADV StatHandleTrap;
553	STAMCOUNTER StatSwitchBack;
554	STAMCOUNTER StatSwitchBackFail;
555	STAMCOUNTER StatPATMMemoryUsed;
556	STAMCOUNTER StatDuplicateREQSuccess;
557	STAMCOUNTER StatDuplicateREQFailed;
558	STAMCOUNTER StatDuplicateUseExisting;
559	STAMCOUNTER StatFunctionFound;
560	STAMCOUNTER StatFunctionNotFound;
561	STAMPROFILEADV StatPatchWrite;
562	STAMPROFILEADV StatPatchWriteDetect;
563	STAMCOUNTER StatDirty;
564	STAMCOUNTER StatPushTrap;
565	STAMCOUNTER StatPatchWriteInterpreted;
566	STAMCOUNTER StatPatchWriteInterpretedFailed;
567
568	STAMCOUNTER StatSysEnter;
569	STAMCOUNTER StatSysExit;
570	STAMCOUNTER StatEmulIret;
571	STAMCOUNTER StatEmulIretFailed;
572
573	STAMCOUNTER StatInstrDirty;
574	STAMCOUNTER StatInstrDirtyGood;
575	STAMCOUNTER StatInstrDirtyBad;
576
577	STAMCOUNTER StatPatchPageInserted;
578	STAMCOUNTER StatPatchPageRemoved;
579
580	STAMCOUNTER StatPatchRefreshSuccess;
581	STAMCOUNTER StatPatchRefreshFailed;
582
583	STAMCOUNTER StatGenRet;
584	STAMCOUNTER StatGenRetReused;
585	STAMCOUNTER StatGenJump;
586	STAMCOUNTER StatGenCall;
587	STAMCOUNTER StatGenPopf;
588
589	STAMCOUNTER StatCheckPendingIRQ;
590
591	STAMCOUNTER StatFunctionLookupReplace;
592	STAMCOUNTER StatFunctionLookupInsert;
593	uint32_t StatU32FunctionMaxSlotsUsed;
594	uint32_t Alignment0; /*< Align the structure size on a 8-byte boundary. /
595	} PATM, *PPATM;
596
597
598
599	DECLCALLBACK(int) patmR3Save(PVM pVM, PSSMHANDLE pSSM);
600	DECLCALLBACK(int) patmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
601
602	#ifdef IN_RING3
603	RTRCPTR patmPatchGCPtr2GuestGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t *) pPatchGC);
604	RTRCPTR patmGuestGCPtrToPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
605	RTRCPTR patmGuestGCPtrToClosestPatchGCPtr(PVM pVM, PPATCHINFO pPatch, RCPTRTYPE(uint8_t*) pInstrGC);
606	#endif
607
608	void patmR3AddP2GLookupRecord(PVM pVM, PPATCHINFO pPatch, uint8_t *pPatchInstrHC, RTRCPTR pInstrGC,
609	PATM_LOOKUP_TYPE enmType, bool fDirty = false);
610	int patmInsertPatchPages(PVM pVM, PPATCHINFO pPatch);
611	RTRCPTR patmPatchQueryStatAddress(PVM pVM, PPATCHINFO pPatch);
612	int patmR3RemovePatch(PVM pVM, PPATMPATCHREC pPatchRec, bool fForceRemove);
613
614	/**
615	* Call for analysing the instructions following the privileged instr. for compliance with our heuristics
616	*
617	* @returns VBox status code.
618	* @param pVM The cross context VM structure.
619	* @param pCpu CPU disassembly state
620	* @param pInstrHC Guest context pointer to privileged instruction
621	* @param pCurInstrHC Guest context pointer to current instruction
622	* @param pCacheRec Cache record ptr
623	*
624	*/
625	typedef int (VBOXCALL PFN_PATMR3ANALYSE)(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
626
627	int patmR3InstallGuestSpecificPatch(PVM pVM, PDISCPUSTATE pCpu, RTRCPTR pInstrGC, uint8_t *pInstrHC, PPATMPATCHREC pPatchRec);
628	PPATMPATCHREC patmQueryFunctionPatch(PVM pVM, RTRCPTR pInstrGC);
629	const char *patmGetInstructionString(uint32_t opcode, uint32_t fPatchFlags);
630
631	PPATCHINFO patmFindActivePatchByEntrypoint(PVM pVM, RTRCPTR pInstrGC, bool fIncludeHints = false);
632	int patmR3PatchInstrInt3(PVM pVM, RTRCPTR pInstrGC, R3PTRTYPE(uint8_t ) pInstrHC, DISCPUSTATE pCpu, PPATCHINFO pPatch);
633	int patmAddBranchToLookupCache(PVM pVM, RTRCPTR pJumpTableGC, RTRCPTR pBranchTarget, RTRCUINTPTR pRelBranchPatch);
634	R3PTRTYPE(uint8_t ) patmR3GCVirtToHCVirt(PVM pVM, PPATMP2GLOOKUPREC pCacheRec, RCPTRTYPE(uint8_t ) pGCPtr);
635
636	RT_C_DECLS_BEGIN
637	DECLEXPORT(FNPGMRCVIRTPFHANDLER) patmRCVirtPagePfHandler;
638	RT_C_DECLS_END
639
640	/**
641	* Calculate the branch destination
642	*
643	* @returns branch destination or 0 if failed
644	* @param pCpu Disassembly state of instruction.
645	* @param pBranchInstrGC GC pointer of branch instruction
646	*/
647	DECLINLINE(RTRCPTR) PATMResolveBranch(PDISCPUSTATE pCpu, RTRCPTR pBranchInstrGC)
648	{
649	uint32_t disp;
650	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE8_REL)
651	{
652	disp = (int32_t)(char)pCpu->Param1.uValue;
653	}
654	else
655	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE16_REL)
656	{
657	disp = (int32_t)(uint16_t)pCpu->Param1.uValue;
658	}
659	else
660	if (pCpu->Param1.fUse & DISUSE_IMMEDIATE32_REL)
661	{
662	disp = (int32_t)pCpu->Param1.uValue;
663	}
664	else
665	{
666	Log(("We don't support far jumps here!! (%08X)\n", pCpu->Param1.fUse));
667	return 0;
668	}
669	#ifdef IN_RC
670	return (RTRCPTR)((uint8_t *)pBranchInstrGC + pCpu->cbInstr + disp);
671	#else
672	return pBranchInstrGC + pCpu->cbInstr + disp;
673	#endif
674	}
675
676	#ifdef LOG_ENABLED
677	DECLCALLBACK(int) patmR3DisasmCallback(PVM pVM, DISCPUSTATE pCpu, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t *) pCurInstrGC, PPATMP2GLOOKUPREC pCacheRec);
678	int patmr3DisasmCodeStream(PVM pVM, RCPTRTYPE(uint8_t ) pInstrGC, RCPTRTYPE(uint8_t ) pCurInstrGC, PFN_PATMR3ANALYSE pfnPATMR3Analyse, PPATMP2GLOOKUPREC pCacheRec);
679	#endif
680
681
682	void patmR3DbgInit(PVM pVM);
683	void patmR3DbgTerm(PVM pVM);
684	void patmR3DbgReset(PVM pVM);
685	void patmR3DbgAddPatch(PVM pVM, PPATMPATCHREC pPatchRec);
686
687	PGM_ALL_CB2_DECL(FNPGMVIRTHANDLER) patmVirtPageHandler;
688
689	#endif

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source: vbox/trunk/src/VBox/VMM/include/PATMInternal.h@ 62145

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