DBGFInternal.h@ 94249

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1	/* $Id: DBGFInternal.h 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* DBGF - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 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_DBGFInternal_h
19	#define VMM_INCLUDED_SRC_include_DBGFInternal_h
20	#ifndef RT_WITHOUT_PRAGMA_ONCE
21	# pragma once
22	#endif
23
24	#include <VBox/cdefs.h>
25	#ifdef IN_RING3
26	# include <VBox/dis.h>
27	#endif
28	#include <VBox/types.h>
29	#include <iprt/semaphore.h>
30	#include <iprt/critsect.h>
31	#include <iprt/string.h>
32	#include <iprt/avl.h>
33	#include <iprt/dbg.h>
34	#include <iprt/tracelog.h>
35	#include <VBox/vmm/dbgf.h>
36
37
38
39	/** @defgroup grp_dbgf_int Internals
40	* @ingroup grp_dbgf
41	* @internal
42	* @{
43	*/
44
45	/** The maximum tracer instance (total) size, ring-0/raw-mode capable tracers. */
46	#define DBGF_MAX_TRACER_INSTANCE_SIZE _512M
47	/** The maximum tracers instance (total) size, ring-3 only tracers. */
48	#define DBGF_MAX_TRACER_INSTANCE_SIZE_R3 _1G
49	/** Event ringbuffer header size. */
50	#define DBGF_TRACER_EVT_HDR_SZ (32)
51	/** Event ringbuffer payload size. */
52	#define DBGF_TRACER_EVT_PAYLOAD_SZ (32)
53	/** Event ringbuffer entry size. */
54	#define DBGF_TRACER_EVT_SZ (DBGF_TRACER_EVT_HDR_SZ + DBGF_TRACER_EVT_PAYLOAD_SZ)
55
56
57	/** @name Global breakpoint table handling defines.
58	* @{ */
59	/** Maximum number of breakpoint owners supported (power of two). */
60	#define DBGF_BP_OWNER_COUNT_MAX _32K
61	/** Maximum number of breakpoints supported (power of two). */
62	#define DBGF_BP_COUNT_MAX _1M
63	/** Size of a single breakpoint structure in bytes. */
64	#define DBGF_BP_ENTRY_SZ 64
65	/** Number of breakpoints handled in one chunk (power of two). */
66	#define DBGF_BP_COUNT_PER_CHUNK _64K
67	/** Number of chunks required to support all breakpoints. */
68	#define DBGF_BP_CHUNK_COUNT (DBGF_BP_COUNT_MAX / DBGF_BP_COUNT_PER_CHUNK)
69	/** Maximum number of instruction bytes when executing breakpointed instructions. */
70	#define DBGF_BP_INSN_MAX 16
71	/** @} */
72
73	/** @name L2 lookup table limit defines.
74	* @{ */
75	/** Maximum number of entreis in the L2 lookup table. */
76	#define DBGF_BP_L2_TBL_ENTRY_COUNT_MAX _512K
77	/** Number of L2 entries handled in one chunk. */
78	#define DBGF_BP_L2_TBL_ENTRIES_PER_CHUNK _64K
79	/** Number of chunks required tp support all L2 lookup table entries. */
80	#define DBGF_BP_L2_TBL_CHUNK_COUNT (DBGF_BP_L2_TBL_ENTRY_COUNT_MAX / DBGF_BP_L2_TBL_ENTRIES_PER_CHUNK)
81	/** @} */
82
83
84	/*******************************************************************************
85	* Structures and Typedefs *
86	*******************************************************************************/
87
88	/**
89	* Event entry types.
90	*/
91	typedef enum DBGFTRACEREVT
92	{
93	/** Invalid type. */
94	DBGFTRACEREVT_INVALID = 0,
95	/** Register event source event. */
96	DBGFTRACEREVT_SRC_REGISTER,
97	/** Deregister event source event. */
98	DBGFTRACEREVT_SRC_DEREGISTER,
99	/** MMIO region create event. */
100	DBGFTRACEREVT_MMIO_REGION_CREATE,
101	/** MMIO map region event. */
102	DBGFTRACEREVT_MMIO_MAP,
103	/** MMIO unmap region event. */
104	DBGFTRACEREVT_MMIO_UNMAP,
105	/** MMIO read event. */
106	DBGFTRACEREVT_MMIO_READ,
107	/** MMIO write event. */
108	DBGFTRACEREVT_MMIO_WRITE,
109	/** MMIO fill event. */
110	DBGFTRACEREVT_MMIO_FILL,
111	/** I/O port region create event. */
112	DBGFTRACEREVT_IOPORT_REGION_CREATE,
113	/** I/O port map event. */
114	DBGFTRACEREVT_IOPORT_MAP,
115	/** I/O port unmap event. */
116	DBGFTRACEREVT_IOPORT_UNMAP,
117	/** I/O port read event. */
118	DBGFTRACEREVT_IOPORT_READ,
119	/** I/O port read string event. */
120	DBGFTRACEREVT_IOPORT_READ_STR,
121	/** I/O port write event. */
122	DBGFTRACEREVT_IOPORT_WRITE,
123	/** I/O port write string event. */
124	DBGFTRACEREVT_IOPORT_WRITE_STR,
125	/** IRQ event. */
126	DBGFTRACEREVT_IRQ,
127	/** I/O APIC MSI event. */
128	DBGFTRACEREVT_IOAPIC_MSI,
129	/** Read from guest physical memory. */
130	DBGFTRACEREVT_GCPHYS_READ,
131	/** Write to guest physical memory. */
132	DBGFTRACEREVT_GCPHYS_WRITE,
133	/** 32bit hack. */
134	DBGFTRACEREVT_32BIT_HACK
135	} DBGFTRACEREVT;
136	/** Pointer to a trace event entry type. */
137	typedef DBGFTRACEREVT *PDBGFTRACEREVT;
138
139
140	/**
141	* MMIO region create event.
142	*/
143	typedef struct DBGFTRACEREVTMMIOCREATE
144	{
145	/** Unique region handle for the event source. */
146	uint64_t hMmioRegion;
147	/** Size of the region in bytes. */
148	RTGCPHYS cbRegion;
149	/** IOM flags passed to the region. */
150	uint32_t fIomFlags;
151	/** The PCI region for a PCI device. */
152	uint32_t iPciRegion;
153	/** Padding to 32byte. */
154	uint64_t u64Pad0;
155	} DBGFTRACEREVTMMIOCREATE;
156	/** Pointer to a MMIO map event. */
157	typedef DBGFTRACEREVTMMIOCREATE *PDBGFTRACEREVTMMIOCREATE;
158	/** Pointer to a const MMIO map event. */
159	typedef const DBGFTRACEREVTMMIOCREATE *PCDBGFTRACEREVTMMIOCREATE;
160
161	AssertCompileSize(DBGFTRACEREVTMMIOCREATE, DBGF_TRACER_EVT_PAYLOAD_SZ);
162
163
164	/**
165	* MMIO region map event.
166	*/
167	typedef struct DBGFTRACEREVTMMIOMAP
168	{
169	/** Unique region handle for the event source. */
170	uint64_t hMmioRegion;
171	/** The base guest physical address of the MMIO region. */
172	RTGCPHYS GCPhysMmioBase;
173	/** Padding to 32byte. */
174	uint64_t au64Pad0[2];
175	} DBGFTRACEREVTMMIOMAP;
176	/** Pointer to a MMIO map event. */
177	typedef DBGFTRACEREVTMMIOMAP *PDBGFTRACEREVTMMIOMAP;
178	/** Pointer to a const MMIO map event. */
179	typedef const DBGFTRACEREVTMMIOMAP *PCDBGFTRACEREVTMMIOMAP;
180
181	AssertCompileSize(DBGFTRACEREVTMMIOMAP, DBGF_TRACER_EVT_PAYLOAD_SZ);
182
183
184	/**
185	* MMIO region unmap event.
186	*/
187	typedef struct DBGFTRACEREVTMMIOUNMAP
188	{
189	/** Unique region handle for the event source. */
190	uint64_t hMmioRegion;
191	/** Padding to 32byte. */
192	uint64_t au64Pad0[3];
193	} DBGFTRACEREVTMMIOUNMAP;
194	/** Pointer to a MMIO map event. */
195	typedef DBGFTRACEREVTMMIOUNMAP *PDBGFTRACEREVTMMIOUNMAP;
196	/** Pointer to a const MMIO map event. */
197	typedef const DBGFTRACEREVTMMIOUNMAP *PCDBGFTRACEREVTMMIOUNMAP;
198
199	AssertCompileSize(DBGFTRACEREVTMMIOUNMAP, DBGF_TRACER_EVT_PAYLOAD_SZ);
200
201
202	/**
203	* MMIO event.
204	*/
205	typedef struct DBGFTRACEREVTMMIO
206	{
207	/** Unique region handle for the event source. */
208	uint64_t hMmioRegion;
209	/** Offset into the region the access happened. */
210	RTGCPHYS offMmio;
211	/** Number of bytes transfered (the direction is in the event header). */
212	uint64_t cbXfer;
213	/** The value transfered. */
214	uint64_t u64Val;
215	} DBGFTRACEREVTMMIO;
216	/** Pointer to a MMIO event. */
217	typedef DBGFTRACEREVTMMIO *PDBGFTRACEREVTMMIO;
218	/** Pointer to a const MMIO event. */
219	typedef const DBGFTRACEREVTMMIO *PCDBGFTRACEREVTMMIO;
220
221	AssertCompileSize(DBGFTRACEREVTMMIO, DBGF_TRACER_EVT_PAYLOAD_SZ);
222
223
224	/**
225	* MMIO fill event.
226	*/
227	typedef struct DBGFTRACEREVTMMIOFILL
228	{
229	/** Unique region handle for the event source. */
230	uint64_t hMmioRegion;
231	/** Offset into the region the access happened. */
232	RTGCPHYS offMmio;
233	/** Item size in bytes. */
234	uint32_t cbItem;
235	/** Amount of items being filled. */
236	uint32_t cItems;
237	/** The fill value. */
238	uint32_t u32Item;
239	/** Padding to 32bytes. */
240	uint32_t u32Pad0;
241	} DBGFTRACEREVTMMIOFILL;
242	/** Pointer to a MMIO event. */
243	typedef DBGFTRACEREVTMMIOFILL *PDBGFTRACEREVTMMIOFILL;
244	/** Pointer to a const MMIO event. */
245	typedef const DBGFTRACEREVTMMIOFILL *PCDBGFTRACEREVTMMIOFILL;
246
247	AssertCompileSize(DBGFTRACEREVTMMIOFILL, DBGF_TRACER_EVT_PAYLOAD_SZ);
248
249
250	/**
251	* I/O port region create event.
252	*/
253	typedef struct DBGFTRACEREVTIOPORTCREATE
254	{
255	/** Unique I/O port region handle for the event source. */
256	uint64_t hIoPorts;
257	/** Number of ports. */
258	RTIOPORT cPorts;
259	/** Padding. */
260	uint16_t u16Pad0;
261	/** IOM flags passed to the region. */
262	uint32_t fIomFlags;
263	/** The PCI region for a PCI device. */
264	uint32_t iPciRegion;
265	/** Padding to 32byte. */
266	uint32_t u32Pad0[3];
267	} DBGFTRACEREVTIOPORTCREATE;
268	/** Pointer to a MMIO map event. */
269	typedef DBGFTRACEREVTIOPORTCREATE *PDBGFTRACEREVTIOPORTCREATE;
270	/** Pointer to a const MMIO map event. */
271	typedef const DBGFTRACEREVTIOPORTCREATE *PCDBGFTRACEREVTIOPORTCREATE;
272
273	AssertCompileSize(DBGFTRACEREVTIOPORTCREATE, DBGF_TRACER_EVT_PAYLOAD_SZ);
274
275
276	/**
277	* I/O port region map event.
278	*/
279	typedef struct DBGFTRACEREVTIOPORTMAP
280	{
281	/** Unique I/O port region handle for the event source. */
282	uint64_t hIoPorts;
283	/** The base I/O port for the region. */
284	RTIOPORT IoPortBase;
285	/** Padding to 32byte. */
286	uint16_t au16Pad0[11];
287	} DBGFTRACEREVTIOPORTMAP;
288	/** Pointer to a MMIO map event. */
289	typedef DBGFTRACEREVTIOPORTMAP *PDBGFTRACEREVTIOPORTMAP;
290	/** Pointer to a const MMIO map event. */
291	typedef const DBGFTRACEREVTIOPORTMAP *PCDBGFTRACEREVTIOPORTMAP;
292
293	AssertCompileSize(DBGFTRACEREVTIOPORTMAP, DBGF_TRACER_EVT_PAYLOAD_SZ);
294
295
296	/**
297	* MMIO region unmap event.
298	*/
299	typedef struct DBGFTRACEREVTIOPORTUNMAP
300	{
301	/** Unique region handle for the event source. */
302	uint64_t hIoPorts;
303	/** Padding to 32byte. */
304	uint64_t au64Pad0[3];
305	} DBGFTRACEREVTIOPORTUNMAP;
306	/** Pointer to a MMIO map event. */
307	typedef DBGFTRACEREVTIOPORTUNMAP *PDBGFTRACEREVTIOPORTUNMAP;
308	/** Pointer to a const MMIO map event. */
309	typedef const DBGFTRACEREVTIOPORTUNMAP *PCDBGFTRACEREVTIOPORTUNMAP;
310
311	AssertCompileSize(DBGFTRACEREVTIOPORTUNMAP, DBGF_TRACER_EVT_PAYLOAD_SZ);
312
313
314	/**
315	* I/O port event.
316	*/
317	typedef struct DBGFTRACEREVTIOPORT
318	{
319	/** Unique region handle for the event source. */
320	uint64_t hIoPorts;
321	/** Offset into the I/O port region. */
322	RTIOPORT offPort;
323	/** 8 byte alignment. */
324	uint8_t abPad0[6];
325	/** Number of bytes transfered (the direction is in the event header). */
326	uint64_t cbXfer;
327	/** The value transfered. */
328	uint32_t u32Val;
329	/** Padding to 32bytes. */
330	uint8_t abPad1[4];
331	} DBGFTRACEREVTIOPORT;
332	/** Pointer to a MMIO event. */
333	typedef DBGFTRACEREVTIOPORT *PDBGFTRACEREVTIOPORT;
334	/** Pointer to a const MMIO event. */
335	typedef const DBGFTRACEREVTIOPORT *PCDBGFTRACEREVTIOPORT;
336
337	AssertCompileSize(DBGFTRACEREVTIOPORT, DBGF_TRACER_EVT_PAYLOAD_SZ);
338
339
340	/**
341	* I/O port string event.
342	*/
343	typedef struct DBGFTRACEREVTIOPORTSTR
344	{
345	/** Unique region handle for the event source. */
346	uint64_t hIoPorts;
347	/** Item size in bytes. */
348	uint32_t cbItem;
349	/** Number of transfers requested - for writes this gives the amount of valid data following. */
350	uint32_t cTransfersReq;
351	/** Number of transfers done - for reads this gives the amount of valid data following. */
352	uint32_t cTransfersRet;
353	/** Offset into the I/O port region. */
354	RTIOPORT offPort;
355	/** Data being transfered. */
356	uint8_t abData[10];
357	} DBGFTRACEREVTIOPORTSTR;
358	/** Pointer to a MMIO event. */
359	typedef DBGFTRACEREVTIOPORTSTR *PDBGFTRACEREVTIOPORTSTR;
360	/** Pointer to a const MMIO event. */
361	typedef const DBGFTRACEREVTIOPORTSTR *PCDBGFTRACEREVTIOPORTSTR;
362
363	AssertCompileSize(DBGFTRACEREVTIOPORTSTR, DBGF_TRACER_EVT_PAYLOAD_SZ);
364
365
366	/**
367	* IRQ event.
368	*/
369	typedef struct DBGFTRACEREVTIRQ
370	{
371	/** The IRQ line. */
372	int32_t iIrq;
373	/** IRQ level flags. */
374	int32_t fIrqLvl;
375	/** Padding to 32bytes. */
376	uint32_t au32Pad0[6];
377	} DBGFTRACEREVTIRQ;
378	/** Pointer to a MMIO event. */
379	typedef DBGFTRACEREVTIRQ *PDBGFTRACEREVTIRQ;
380	/** Pointer to a const MMIO event. */
381	typedef const DBGFTRACEREVTIRQ *PCDBGFTRACEREVTIRQ;
382
383	AssertCompileSize(DBGFTRACEREVTIRQ, DBGF_TRACER_EVT_PAYLOAD_SZ);
384
385
386	/**
387	* I/O APIC MSI event.
388	*/
389	typedef struct DBGFTRACEREVTIOAPICMSI
390	{
391	/** The guest physical address being written. */
392	RTGCPHYS GCPhys;
393	/** The value being written. */
394	uint32_t u32Val;
395	/** Padding to 32bytes. */
396	uint32_t au32Pad0[5];
397	} DBGFTRACEREVTIOAPICMSI;
398	/** Pointer to a MMIO event. */
399	typedef DBGFTRACEREVTIOAPICMSI *PDBGFTRACEREVTIOAPICMSI;
400	/** Pointer to a const MMIO event. */
401	typedef const DBGFTRACEREVTIOAPICMSI *PCDBGFTRACEREVTIOAPICMSI;
402
403	AssertCompileSize(DBGFTRACEREVTIOAPICMSI, DBGF_TRACER_EVT_PAYLOAD_SZ);
404
405
406	/**
407	* Guest physical memory transfer.
408	*/
409	typedef struct DBGFTRACEREVTGCPHYS
410	{
411	/** Guest physical address of the access. */
412	RTGCPHYS GCPhys;
413	/** Number of bytes transfered (the direction is in the event header).
414	* If the number is small enough to fit into the remaining space of the entry
415	* it is stored here, otherwise it will be stored in the next entry (and following
416	* entries). */
417	uint64_t cbXfer;
418	/** Guest data being transfered. */
419	uint8_t abData[16];
420	} DBGFTRACEREVTGCPHYS;
421	/** Pointer to a guest physical memory transfer event. */
422	typedef DBGFTRACEREVTGCPHYS *PDBGFTRACEREVTGCPHYS;
423	/** Pointer to a const uest physical memory transfer event. */
424	typedef const DBGFTRACEREVTGCPHYS *PCDBGFTRACEREVTGCPHYS;
425
426	AssertCompileSize(DBGFTRACEREVTGCPHYS, DBGF_TRACER_EVT_PAYLOAD_SZ);
427
428
429	/**
430	* A trace event header in the shared ring buffer.
431	*/
432	typedef struct DBGFTRACEREVTHDR
433	{
434	/** Event ID. */
435	volatile uint64_t idEvt;
436	/** The previous event ID this one links to,
437	* DBGF_TRACER_EVT_HDR_ID_INVALID if it links to no other event. */
438	uint64_t idEvtPrev;
439	/** Event source. */
440	DBGFTRACEREVTSRC hEvtSrc;
441	/** The event entry type. */
442	DBGFTRACEREVT enmEvt;
443	/** Flags for this event. */
444	uint32_t fFlags;
445	} DBGFTRACEREVTHDR;
446	/** Pointer to a trace event header. */
447	typedef DBGFTRACEREVTHDR *PDBGFTRACEREVTHDR;
448	/** Pointer to a const trace event header. */
449	typedef const DBGFTRACEREVTHDR *PCDBGFTRACEREVTHDR;
450
451	AssertCompileSize(DBGFTRACEREVTHDR, DBGF_TRACER_EVT_HDR_SZ);
452
453	/** Invalid event ID, this is always set by the flush thread after processing one entry
454	* so the producers know when they are about to overwrite not yet processed entries in the ring buffer. */
455	#define DBGF_TRACER_EVT_HDR_ID_INVALID UINT64_C(0xffffffffffffffff)
456
457	/** The event came from R0. */
458	#define DBGF_TRACER_EVT_HDR_F_R0 RT_BIT(0)
459
460	/** Default event header tracer flags. */
461	#ifdef IN_RING0
462	# define DBGF_TRACER_EVT_HDR_F_DEFAULT DBGF_TRACER_EVT_HDR_F_R0
463	#else
464	# define DBGF_TRACER_EVT_HDR_F_DEFAULT (0)
465	#endif
466
467
468	/**
469	* Tracer instance data, shared structure.
470	*/
471	typedef struct DBGFTRACERSHARED
472	{
473	/** The global event ID counter, monotonically increasing.
474	* Accessed by all threads causing a trace event. */
475	volatile uint64_t idEvt;
476	/** The SUP event semaphore for poking the flush thread. */
477	SUPSEMEVENT hSupSemEvtFlush;
478	/** Ring buffer size. */
479	size_t cbRingBuf;
480	/** Flag whether there are events in the ring buffer to get processed. */
481	volatile bool fEvtsWaiting;
482	/** Flag whether the flush thread is actively running or was kicked. */
483	volatile bool fFlushThrdActive;
484	/** Padding to a 64byte alignment. */
485	uint8_t abAlignment0[32];
486	} DBGFTRACERSHARED;
487	/** Pointer to the shared tarcer instance data. */
488	typedef DBGFTRACERSHARED *PDBGFTRACERSHARED;
489
490	AssertCompileSizeAlignment(DBGFTRACERSHARED, 64);
491
492
493	/**
494	* Guest memory read/write data aggregation.
495	*/
496	typedef struct DBGFTRACERGCPHYSRWAGG
497	{
498	/** The event ID which started the aggregation (used for the group ID when writing out the event). */
499	uint64_t idEvtStart;
500	/** The previous event ID used to link all the chunks together. */
501	uint64_t idEvtPrev;
502	/** Number of bytes being transfered. */
503	size_t cbXfer;
504	/** Amount of data left to aggregate before it can be written. */
505	size_t cbLeft;
506	/** Amount of bytes allocated. */
507	size_t cbBufMax;
508	/** Offset into the buffer to write next. */
509	size_t offBuf;
510	/** Pointer to the allocated buffer. */
511	uint8_t *pbBuf;
512	} DBGFTRACERGCPHYSRWAGG;
513	/** Pointer to a guest memory read/write data aggregation structure. */
514	typedef DBGFTRACERGCPHYSRWAGG *PDBGFTRACERGCPHYSRWAGG;
515
516
517	/**
518	* Tracer instance data, ring-3
519	*/
520	typedef struct DBGFTRACERINSR3
521	{
522	/** Pointer to the next instance.
523	* (Head is pointed to by PDM::pTracerInstances.) */
524	R3PTRTYPE(struct DBGFTRACERINSR3 *) pNextR3;
525	/** R3 pointer to the VM this instance was created for. */
526	PVMR3 pVMR3;
527	/** Tracer instance number. */
528	uint32_t idTracer;
529	/** Flag whether the tracer has the R0 part enabled. */
530	bool fR0Enabled;
531	/** Flag whether the tracer flush thread should shut down. */
532	volatile bool fShutdown;
533	/** Padding. */
534	bool afPad0[6];
535	/** Next event source ID to return for a source registration. */
536	volatile DBGFTRACEREVTSRC hEvtSrcNext;
537	/** Pointer to the shared tracer instance data. */
538	R3PTRTYPE(PDBGFTRACERSHARED) pSharedR3;
539	/** The I/O thread writing the log from the shared event ringbuffer. */
540	RTTHREAD hThrdFlush;
541	/** Pointer to the start of the ring buffer. */
542	R3PTRTYPE(uint8_t *) pbRingBufR3;
543	/** The last processed event ID. */
544	uint64_t idEvtLast;
545	/** The trace log writer handle. */
546	RTTRACELOGWR hTraceLog;
547	/** Guest memory data aggregation structures to track
548	* currently pending guest memory reads/writes. */
549	DBGFTRACERGCPHYSRWAGG aGstMemRwData[10];
550	} DBGFTRACERINSR3;
551	/** Pointer to a tarcer instance - Ring-3 Ptr. */
552	typedef R3PTRTYPE(DBGFTRACERINSR3 *) PDBGFTRACERINSR3;
553
554
555	/**
556	* Private tracer instance data, ring-0
557	*/
558	typedef struct DBGFTRACERINSR0
559	{
560	/** Pointer to the VM this instance was created for. */
561	R0PTRTYPE(PGVM) pGVM;
562	/** The tracer instance memory. */
563	RTR0MEMOBJ hMemObj;
564	/** The ring-3 mapping object. */
565	RTR0MEMOBJ hMapObj;
566	/** Pointer to the shared tracer instance data. */
567	R0PTRTYPE(PDBGFTRACERSHARED) pSharedR0;
568	/** Size of the ring buffer in bytes, kept here so R3 can not manipulate the ring buffer
569	* size afterwards to trick R0 into doing something harmful. */
570	size_t cbRingBuf;
571	/** Pointer to the start of the ring buffer. */
572	R0PTRTYPE(uint8_t *) pbRingBufR0;
573	} DBGFTRACERINSR0;
574	/** Pointer to a VM - Ring-0 Ptr. */
575	typedef R0PTRTYPE(DBGFTRACERINSR0 *) PDBGFTRACERINSR0;
576
577
578	/**
579	* Private device instance data, raw-mode
580	*/
581	typedef struct DBGFTRACERINSRC
582	{
583	/** Pointer to the VM this instance was created for. */
584	RGPTRTYPE(PVM) pVMRC;
585	} DBGFTRACERINSRC;
586
587
588	#ifdef IN_RING3
589	DECLHIDDEN(int) dbgfTracerR3EvtPostSingle(PVMCC pVM, PDBGFTRACERINSCC pThisCC, DBGFTRACEREVTSRC hEvtSrc,
590	DBGFTRACEREVT enmTraceEvt, const void *pvEvtDesc, size_t cbEvtDesc,
591	uint64_t *pidEvt);
592	#endif
593
594	/** VMM Debugger Command. */
595	typedef enum DBGFCMD
596	{
597	/** No command.
598	* This is assigned to the field by the emulation thread after
599	* a command has been completed. */
600	DBGFCMD_NO_COMMAND = 0,
601	/** Halt the VM. */
602	DBGFCMD_HALT,
603	/** Resume execution. */
604	DBGFCMD_GO,
605	/** Single step execution - stepping into calls. */
606	DBGFCMD_SINGLE_STEP
607	} DBGFCMD;
608
609	/**
610	* VMM Debugger Command.
611	*/
612	typedef union DBGFCMDDATA
613	{
614	uint32_t uDummy;
615	} DBGFCMDDATA;
616	/** Pointer to DBGF Command Data. */
617	typedef DBGFCMDDATA *PDBGFCMDDATA;
618
619	/**
620	* Info type.
621	*/
622	typedef enum DBGFINFOTYPE
623	{
624	/** Invalid. */
625	DBGFINFOTYPE_INVALID = 0,
626	/** Device owner. */
627	DBGFINFOTYPE_DEV,
628	/** Driver owner. */
629	DBGFINFOTYPE_DRV,
630	/** Internal owner. */
631	DBGFINFOTYPE_INT,
632	/** External owner. */
633	DBGFINFOTYPE_EXT,
634	/** Device owner. */
635	DBGFINFOTYPE_DEV_ARGV,
636	/** Driver owner. */
637	DBGFINFOTYPE_DRV_ARGV,
638	/** USB device owner. */
639	DBGFINFOTYPE_USB_ARGV,
640	/** Internal owner, argv. */
641	DBGFINFOTYPE_INT_ARGV,
642	/** External owner. */
643	DBGFINFOTYPE_EXT_ARGV
644	} DBGFINFOTYPE;
645
646
647	/** Pointer to info structure. */
648	typedef struct DBGFINFO *PDBGFINFO;
649
650	#ifdef IN_RING3
651	/**
652	* Info structure.
653	*/
654	typedef struct DBGFINFO
655	{
656	/** The flags. */
657	uint32_t fFlags;
658	/** Owner type. */
659	DBGFINFOTYPE enmType;
660	/** Per type data. */
661	union
662	{
663	/** DBGFINFOTYPE_DEV */
664	struct
665	{
666	/** Device info handler function. */
667	PFNDBGFHANDLERDEV pfnHandler;
668	/** The device instance. */
669	PPDMDEVINS pDevIns;
670	} Dev;
671
672	/** DBGFINFOTYPE_DRV */
673	struct
674	{
675	/** Driver info handler function. */
676	PFNDBGFHANDLERDRV pfnHandler;
677	/** The driver instance. */
678	PPDMDRVINS pDrvIns;
679	} Drv;
680
681	/** DBGFINFOTYPE_INT */
682	struct
683	{
684	/** Internal info handler function. */
685	PFNDBGFHANDLERINT pfnHandler;
686	} Int;
687
688	/** DBGFINFOTYPE_EXT */
689	struct
690	{
691	/** External info handler function. */
692	PFNDBGFHANDLEREXT pfnHandler;
693	/** The user argument. */
694	void *pvUser;
695	} Ext;
696
697	/** DBGFINFOTYPE_DEV_ARGV */
698	struct
699	{
700	/** Device info handler function. */
701	PFNDBGFINFOARGVDEV pfnHandler;
702	/** The device instance. */
703	PPDMDEVINS pDevIns;
704	} DevArgv;
705
706	/** DBGFINFOTYPE_DRV_ARGV */
707	struct
708	{
709	/** Driver info handler function. */
710	PFNDBGFINFOARGVDRV pfnHandler;
711	/** The driver instance. */
712	PPDMDRVINS pDrvIns;
713	} DrvArgv;
714
715	/** DBGFINFOTYPE_USB_ARGV */
716	struct
717	{
718	/** Driver info handler function. */
719	PFNDBGFINFOARGVUSB pfnHandler;
720	/** The driver instance. */
721	PPDMUSBINS pUsbIns;
722	} UsbArgv;
723
724	/** DBGFINFOTYPE_INT_ARGV */
725	struct
726	{
727	/** Internal info handler function. */
728	PFNDBGFINFOARGVINT pfnHandler;
729	} IntArgv;
730
731	/** DBGFINFOTYPE_EXT_ARGV */
732	struct
733	{
734	/** External info handler function. */
735	PFNDBGFINFOARGVEXT pfnHandler;
736	/** The user argument. */
737	void *pvUser;
738	} ExtArgv;
739	} u;
740
741	/** Pointer to the description. */
742	const char *pszDesc;
743	/** Pointer to the next info structure. */
744	PDBGFINFO pNext;
745	/** The identifier name length. */
746	size_t cchName;
747	/** The identifier name. (Extends 'beyond' the struct as usual.) */
748	char szName[1];
749	} DBGFINFO;
750	#endif /* IN_RING3 */
751
752
753	#ifdef IN_RING3
754	/**
755	* Guest OS digger instance.
756	*/
757	typedef struct DBGFOS
758	{
759	/** Pointer to the registration record. */
760	PCDBGFOSREG pReg;
761	/** Pointer to the next OS we've registered. */
762	struct DBGFOS *pNext;
763	/** List of EMT interface wrappers. */
764	struct DBGFOSEMTWRAPPER *pWrapperHead;
765	/** The instance data (variable size). */
766	uint8_t abData[16];
767	} DBGFOS;
768	#endif
769	/** Pointer to guest OS digger instance. */
770	typedef struct DBGFOS *PDBGFOS;
771	/** Pointer to const guest OS digger instance. */
772	typedef struct DBGFOS const *PCDBGFOS;
773
774
775	/** An invalid breakpoint chunk ID. */
776	#define DBGF_BP_CHUNK_ID_INVALID UINT32_MAX
777	/** Generates a unique breakpoint handle from the given chunk ID and entry inside the chunk. */
778	#define DBGF_BP_HND_CREATE(a_idChunk, a_idEntry) RT_MAKE_U32(a_idEntry, a_idChunk);
779	/** Returns the chunk ID from the given breakpoint handle. */
780	#define DBGF_BP_HND_GET_CHUNK_ID(a_hBp) ((uint32_t)RT_HI_U16(a_hBp))
781	/** Returns the entry index inside a chunk from the given breakpoint handle. */
782	#define DBGF_BP_HND_GET_ENTRY(a_hBp) ((uint32_t)RT_LO_U16(a_hBp))
783
784
785	/** @name DBGF int3 L1 lookup table entry types.
786	* @{ */
787	/** No breakpoint handle assigned for this entry - special value which can be used
788	* for comparison with the whole entry. */
789	#define DBGF_BP_INT3_L1_ENTRY_TYPE_NULL UINT32_C(0)
790	/** Direct breakpoint handle. */
791	#define DBGF_BP_INT3_L1_ENTRY_TYPE_BP_HND 1
792	/** Index into the L2 tree denoting the root of a search tree. */
793	#define DBGF_BP_INT3_L1_ENTRY_TYPE_L2_IDX 2
794	/** @} */
795
796
797	/** Returns the entry type for the given L1 lookup table entry. */
798	#define DBGF_BP_INT3_L1_ENTRY_GET_TYPE(a_u32Entry) ((a_u32Entry) >> 28)
799	/** Returns a DBGF breakpoint handle from the given L1 lookup table entry,
800	* type needs to be DBGF_BP_INT3_L1_ENTRY_TYPE_BP_HND. */
801	#define DBGF_BP_INT3_L1_ENTRY_GET_BP_HND(a_u32Entry) ((DBGFBP)((a_u32Entry) & UINT32_C(0x0fffffff)))
802	/** Returns a L2 index from the given L1 lookup table entry,
803	* type needs to be DBGF_BP_INT3_L1_ENTRY_TYPE_L2_IDX. */
804	#define DBGF_BP_INT3_L1_ENTRY_GET_L2_IDX(a_u32Entry) ((a_u32Entry) & UINT32_C(0x0fffffff))
805	/** Creates a L1 entry value from the given type and data. */
806	#define DBGF_BP_INT3_L1_ENTRY_CREATE(a_Type, a_u32Data) ((((uint32_t)(a_Type)) << 28) \| ((a_u32Data) & UINT32_C(0x0fffffff)))
807	/** Creates a breakpoint handle type L1 lookup entry. */
808	#define DBGF_BP_INT3_L1_ENTRY_CREATE_BP_HND(a_hBp) DBGF_BP_INT3_L1_ENTRY_CREATE(DBGF_BP_INT3_L1_ENTRY_TYPE_BP_HND, a_hBp)
809	/** Creates a L2 index type L1 lookup entry. */
810	#define DBGF_BP_INT3_L1_ENTRY_CREATE_L2_IDX(a_idxL2) DBGF_BP_INT3_L1_ENTRY_CREATE(DBGF_BP_INT3_L1_ENTRY_TYPE_L2_IDX, a_idxL2)
811
812	/** Extracts the lowest bits from the given GC pointer used as an index into the L1 lookup table. */
813	#define DBGF_BP_INT3_L1_IDX_EXTRACT_FROM_ADDR(a_GCPtr) ((uint16_t)((a_GCPtr) & UINT16_C(0xffff)))
814
815	/**
816	* The internal breakpoint owner state, shared part.
817	*/
818	typedef struct DBGFBPOWNERINT
819	{
820	/** Reference counter indicating how man breakpoints use this owner currently. */
821	volatile uint32_t cRefs;
822	/** Padding. */
823	uint32_t u32Pad0;
824	/** Callback to call when a breakpoint has hit, Ring-3 Ptr. */
825	R3PTRTYPE(PFNDBGFBPHIT) pfnBpHitR3;
826	/** Callback to call when a I/O breakpoint has hit, Ring-3 Ptr. */
827	R3PTRTYPE(PFNDBGFBPIOHIT) pfnBpIoHitR3;
828	/** Padding. */
829	uint64_t u64Pad1;
830	} DBGFBPOWNERINT;
831	AssertCompileSize(DBGFBPOWNERINT, 32);
832	/** Pointer to an internal breakpoint owner state, shared part. */
833	typedef DBGFBPOWNERINT *PDBGFBPOWNERINT;
834	/** Pointer to a constant internal breakpoint owner state, shared part. */
835	typedef const DBGFBPOWNERINT *PCDBGFBPOWNERINT;
836
837
838	/**
839	* The internal breakpoint owner state, Ring-0 part.
840	*/
841	typedef struct DBGFBPOWNERINTR0
842	{
843	/** Reference counter indicating how man breakpoints use this owner currently. */
844	volatile uint32_t cRefs;
845	/** Padding. */
846	uint32_t u32Pad0;
847	/** Callback to call when a breakpoint has hit, Ring-0 Ptr. */
848	R0PTRTYPE(PFNDBGFBPHIT) pfnBpHitR0;
849	/** Callback to call when a I/O breakpoint has hit, Ring-0 Ptr. */
850	R0PTRTYPE(PFNDBGFBPIOHIT) pfnBpIoHitR0;
851	/** Padding. */
852	uint64_t u64Pad1;
853	} DBGFBPOWNERINTR0;
854	AssertCompileSize(DBGFBPOWNERINTR0, 32);
855	/** Pointer to an internal breakpoint owner state, shared part. */
856	typedef DBGFBPOWNERINTR0 *PDBGFBPOWNERINTR0;
857	/** Pointer to a constant internal breakpoint owner state, shared part. */
858	typedef const DBGFBPOWNERINTR0 *PCDBGFBPOWNERINTR0;
859
860
861	/**
862	* The internal breakpoint state, shared part.
863	*/
864	typedef struct DBGFBPINT
865	{
866	/** The publicly visible part. */
867	DBGFBPPUB Pub;
868	/** The opaque user argument for the owner callback, Ring-3 Ptr. */
869	R3PTRTYPE(void *) pvUserR3;
870	} DBGFBPINT;
871	AssertCompileSize(DBGFBPINT, DBGF_BP_ENTRY_SZ);
872	/** Pointer to an internal breakpoint state. */
873	typedef DBGFBPINT *PDBGFBPINT;
874	/** Pointer to an const internal breakpoint state. */
875	typedef const DBGFBPINT *PCDBGFBPINT;
876
877
878	/**
879	* The internal breakpoint state, R0 part.
880	*/
881	typedef struct DBGFBPINTR0
882	{
883	/** The owner handle. */
884	DBGFBPOWNER hOwner;
885	/** Flag whether the breakpoint is in use. */
886	bool fInUse;
887	/** Padding to 8 byte alignment. */
888	bool afPad[3];
889	/** Opaque user data for the owner callback, Ring-0 Ptr. */
890	R0PTRTYPE(void *) pvUserR0;
891	} DBGFBPINTR0;
892	AssertCompileMemberAlignment(DBGFBPINTR0, pvUserR0, 8);
893	AssertCompileSize(DBGFBPINTR0, 16);
894	/** Pointer to an internal breakpoint state - Ring-0 Ptr. */
895	typedef R0PTRTYPE(DBGFBPINTR0 *) PDBGFBPINTR0;
896
897
898	/**
899	* Hardware breakpoint state.
900	*/
901	typedef struct DBGFBPHW
902	{
903	/** The flat GC address of the breakpoint. */
904	RTGCUINTPTR GCPtr;
905	/** The breakpoint handle if active, NIL_DBGFBP if not in use. */
906	volatile DBGFBP hBp;
907	/** The access type (one of the X86_DR7_RW_* value). */
908	uint8_t fType;
909	/** The access size. */
910	uint8_t cb;
911	/** Flag whether the breakpoint is currently enabled. */
912	volatile bool fEnabled;
913	/** Padding. */
914	uint8_t bPad;
915	} DBGFBPHW;
916	AssertCompileSize(DBGFBPHW, 16);
917	/** Pointer to a hardware breakpoint state. */
918	typedef DBGFBPHW *PDBGFBPHW;
919	/** Pointer to a const hardware breakpoint state. */
920	typedef const DBGFBPHW *PCDBGFBPHW;
921
922
923	/**
924	* A breakpoint table chunk, ring-3 state.
925	*/
926	typedef struct DBGFBPCHUNKR3
927	{
928	/** Pointer to the R3 base of the chunk. */
929	R3PTRTYPE(PDBGFBPINT) pBpBaseR3;
930	/** Bitmap of free/occupied breakpoint entries. */
931	R3PTRTYPE(volatile void *) pbmAlloc;
932	/** Number of free breakpoints in the chunk. */
933	volatile uint32_t cBpsFree;
934	/** The chunk index this tracking structure refers to. */
935	uint32_t idChunk;
936	} DBGFBPCHUNKR3;
937	/** Pointer to a breakpoint table chunk - Ring-3 Ptr. */
938	typedef DBGFBPCHUNKR3 *PDBGFBPCHUNKR3;
939	/** Pointer to a const breakpoint table chunk - Ring-3 Ptr. */
940	typedef const DBGFBPCHUNKR3 *PCDBGFBPCHUNKR3;
941
942
943	/**
944	* Breakpoint table chunk, ring-0 state.
945	*/
946	typedef struct DBGFBPCHUNKR0
947	{
948	/** The chunks memory. */
949	RTR0MEMOBJ hMemObj;
950	/** The ring-3 mapping object. */
951	RTR0MEMOBJ hMapObj;
952	/** Pointer to the breakpoint entries base. */
953	R0PTRTYPE(PDBGFBPINT) paBpBaseSharedR0;
954	/** Pointer to the Ring-0 only part of the breakpoints. */
955	PDBGFBPINTR0 paBpBaseR0Only;
956	} DBGFBPCHUNKR0;
957	/** Pointer to a breakpoint table chunk - Ring-0 Ptr. */
958	typedef R0PTRTYPE(DBGFBPCHUNKR0 *) PDBGFBPCHUNKR0;
959
960
961	/**
962	* L2 lookup table entry.
963	*
964	* @remark The order of the members matters to be able to atomically update
965	* the AVL left/right pointers and depth with a single 64bit atomic write.
966	* @verbatim
967	* 7 6 5 4 3 2 1 0
968	* +--------+--------+--------+--------+--------+--------+--------+--------+
969	* \| hBp[15:0] \| GCPtrKey[63:16] \|
970	* +--------+--------+--------+--------+--------+--------+--------+--------+
971	* \| hBp[27:16] \| iDepth \| idxRight[21:0] \| idxLeft[21:0] \|
972	* +--------+--------+--------+--------+--------+--------+--------+--------+
973	* \_8 bits_/
974	* @endverbatim
975	*/
976	typedef struct DBGFBPL2ENTRY
977	{
978	/** The upper 6 bytes of the breakpoint address and the low 16 bits of the breakpoint handle. */
979	volatile uint64_t u64GCPtrKeyAndBpHnd1;
980	/** Left/right lower index, tree depth and remaining 12 bits of the breakpoint handle. */
981	volatile uint64_t u64LeftRightIdxDepthBpHnd2;
982	} DBGFBPL2ENTRY;
983	AssertCompileSize(DBGFBPL2ENTRY, 16);
984	/** Pointer to a L2 lookup table entry. */
985	typedef DBGFBPL2ENTRY *PDBGFBPL2ENTRY;
986	/** Pointer to a const L2 lookup table entry. */
987	typedef const DBGFBPL2ENTRY *PCDBGFBPL2ENTRY;
988
989	/** Extracts the part from the given GC pointer used as the key in the L2 binary search tree. */
990	#define DBGF_BP_INT3_L2_KEY_EXTRACT_FROM_ADDR(a_GCPtr) ((uint64_t)((a_GCPtr) >> 16))
991
992	/** An invalid breakpoint chunk ID. */
993	#define DBGF_BP_L2_IDX_CHUNK_ID_INVALID UINT32_MAX
994	/** Generates a unique breakpoint handle from the given chunk ID and entry inside the chunk. */
995	#define DBGF_BP_L2_IDX_CREATE(a_idChunk, a_idEntry) RT_MAKE_U32(a_idEntry, a_idChunk);
996	/** Returns the chunk ID from the given breakpoint handle. */
997	#define DBGF_BP_L2_IDX_GET_CHUNK_ID(a_idxL2) ((uint32_t)RT_HI_U16(a_idxL2))
998	/** Returns the entry index inside a chunk from the given breakpoint handle. */
999	#define DBGF_BP_L2_IDX_GET_ENTRY(a_idxL2) ((uint32_t)RT_LO_U16(a_idxL2))
1000
1001	/** Number of bits for the left/right index pointers. */
1002	#define DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_BITS 22
1003	/** Special index value marking the end of a tree. */
1004	#define DBGF_BP_L2_ENTRY_IDX_END UINT32_C(0x3fffff)
1005	/** Number of bits to shift the breakpoint handle in the first part. */
1006	#define DBGF_BP_L2_ENTRY_BP_1ST_SHIFT 48
1007	/** Mask for the first part of the breakpoint handle. */
1008	#define DBGF_BP_L2_ENTRY_BP_1ST_MASK UINT32_C(0x0000ffff)
1009	/** Number of bits to shift the breakpoint handle in the second part. */
1010	#define DBGF_BP_L2_ENTRY_BP_2ND_SHIFT 52
1011	/** Mask for the second part of the breakpoint handle. */
1012	#define DBGF_BP_L2_ENTRY_BP_2ND_MASK UINT32_C(0x0fff0000)
1013	/** Mask for the second part of the breakpoint handle stored in the L2 entry. */
1014	#define DBGF_BP_L2_ENTRY_BP_2ND_L2_ENTRY_MASK UINT64_C(0xfff0000000000000)
1015	/** Number of bits to shift the depth in the second part. */
1016	#define DBGF_BP_L2_ENTRY_DEPTH_SHIFT 44
1017	/** Mask for the depth. */
1018	#define DBGF_BP_L2_ENTRY_DEPTH_MASK UINT8_MAX
1019	/** Number of bits to shift the right L2 index in the second part. */
1020	#define DBGF_BP_L2_ENTRY_RIGHT_IDX_SHIFT 22
1021	/** Number of bits to shift the left L2 index in the second part. */
1022	#define DBGF_BP_L2_ENTRY_LEFT_IDX_SHIFT 0
1023	/** Index mask. */
1024	#define DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_MASK (RT_BIT_32(DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_BITS) - 1)
1025	/** Left index mask. */
1026	#define DBGF_BP_L2_ENTRY_LEFT_IDX_MASK (DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_MASK << DBGF_BP_L2_ENTRY_LEFT_IDX_SHIFT)
1027	/** Right index mask. */
1028	#define DBGF_BP_L2_ENTRY_RIGHT_IDX_MASK (DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_MASK << DBGF_BP_L2_ENTRY_RIGHT_IDX_SHIFT)
1029	/** Returns the upper 6 bytes of the GC pointer from the given breakpoint entry. */
1030	#define DBGF_BP_L2_ENTRY_GET_GCPTR(a_u64GCPtrKeyAndBpHnd1) ((a_u64GCPtrKeyAndBpHnd1) & UINT64_C(0x0000ffffffffffff))
1031	/** Returns the breakpoint handle from both L2 entry members. */
1032	#define DBGF_BP_L2_ENTRY_GET_BP_HND(a_u64GCPtrKeyAndBpHnd1, a_u64LeftRightIdxDepthBpHnd2) \
1033	((DBGFBP)(((a_u64GCPtrKeyAndBpHnd1) >> DBGF_BP_L2_ENTRY_BP_1ST_SHIFT) \| (((a_u64LeftRightIdxDepthBpHnd2) >> DBGF_BP_L2_ENTRY_BP_2ND_SHIFT) << 16)))
1034	/** Extracts the depth of the second 64bit L2 entry value. */
1035	#define DBGF_BP_L2_ENTRY_GET_DEPTH(a_u64LeftRightIdxDepthBpHnd2) ((uint8_t)(((a_u64LeftRightIdxDepthBpHnd2) >> DBGF_BP_L2_ENTRY_DEPTH_SHIFT) & DBGF_BP_L2_ENTRY_DEPTH_MASK))
1036	/** Extracts the lower right index value from the L2 entry value. */
1037	#define DBGF_BP_L2_ENTRY_GET_IDX_RIGHT(a_u64LeftRightIdxDepthBpHnd2) \
1038	((uint32_t)(((a_u64LeftRightIdxDepthBpHnd2) >> 22) & DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_MASK))
1039	/** Extracts the lower left index value from the L2 entry value. */
1040	#define DBGF_BP_L2_ENTRY_GET_IDX_LEFT(a_u64LeftRightIdxDepthBpHnd2) \
1041	((uint32_t)((a_u64LeftRightIdxDepthBpHnd2) & DBGF_BP_L2_ENTRY_LEFT_RIGHT_IDX_MASK))
1042
1043
1044	/**
1045	* A breakpoint L2 lookup table chunk, ring-3 state.
1046	*/
1047	typedef struct DBGFBPL2TBLCHUNKR3
1048	{
1049	/** Pointer to the R3 base of the chunk. */
1050	R3PTRTYPE(PDBGFBPL2ENTRY) pL2BaseR3;
1051	/** Bitmap of free/occupied breakpoint entries. */
1052	R3PTRTYPE(volatile void *) pbmAlloc;
1053	/** Number of free entries in the chunk. */
1054	volatile uint32_t cFree;
1055	/** The chunk index this tracking structure refers to. */
1056	uint32_t idChunk;
1057	} DBGFBPL2TBLCHUNKR3;
1058	/** Pointer to a breakpoint L2 lookup table chunk - Ring-3 Ptr. */
1059	typedef DBGFBPL2TBLCHUNKR3 *PDBGFBPL2TBLCHUNKR3;
1060	/** Pointer to a const breakpoint L2 lookup table chunk - Ring-3 Ptr. */
1061	typedef const DBGFBPL2TBLCHUNKR3 *PCDBGFBPL2TBLCHUNKR3;
1062
1063
1064	/**
1065	* Breakpoint L2 lookup table chunk, ring-0 state.
1066	*/
1067	typedef struct DBGFBPL2TBLCHUNKR0
1068	{
1069	/** The chunks memory. */
1070	RTR0MEMOBJ hMemObj;
1071	/** The ring-3 mapping object. */
1072	RTR0MEMOBJ hMapObj;
1073	/** Pointer to the breakpoint entries base. */
1074	R0PTRTYPE(PDBGFBPL2ENTRY) paBpL2TblBaseSharedR0;
1075	} DBGFBPL2TBLCHUNKR0;
1076	/** Pointer to a breakpoint L2 lookup table chunk - Ring-0 Ptr. */
1077	typedef R0PTRTYPE(DBGFBPL2TBLCHUNKR0 *) PDBGFBPL2TBLCHUNKR0;
1078
1079
1080
1081	/**
1082	* DBGF Data (part of VM)
1083	*/
1084	typedef struct DBGF
1085	{
1086	/** Bitmap of enabled hardware interrupt breakpoints. */
1087	uint32_t bmHardIntBreakpoints[256 / 32];
1088	/** Bitmap of enabled software interrupt breakpoints. */
1089	uint32_t bmSoftIntBreakpoints[256 / 32];
1090	/** Bitmap of selected events.
1091	* This includes non-selectable events too for simplicity, we maintain the
1092	* state for some of these, as it may come in handy. */
1093	uint64_t bmSelectedEvents[(DBGFEVENT_END + 63) / 64];
1094
1095	/** Enabled hardware interrupt breakpoints. */
1096	uint32_t cHardIntBreakpoints;
1097	/** Enabled software interrupt breakpoints. */
1098	uint32_t cSoftIntBreakpoints;
1099
1100	/** The number of selected events. */
1101	uint32_t cSelectedEvents;
1102
1103	/** The number of enabled hardware breakpoints. */
1104	uint8_t cEnabledHwBreakpoints;
1105	/** The number of enabled hardware I/O breakpoints. */
1106	uint8_t cEnabledHwIoBreakpoints;
1107	uint8_t au8Alignment1[2]; /*< Alignment padding. /
1108	/** The number of enabled INT3 breakpoints. */
1109	uint32_t volatile cEnabledInt3Breakpoints;
1110
1111	/** Debugger Attached flag.
1112	* Set if a debugger is attached, elsewise it's clear.
1113	*/
1114	bool volatile fAttached;
1115
1116	/** Stepping filtering. */
1117	struct
1118	{
1119	/** The CPU doing the stepping.
1120	* Set to NIL_VMCPUID when filtering is inactive */
1121	VMCPUID idCpu;
1122	/** The specified flags. */
1123	uint32_t fFlags;
1124	/** The effective PC address to stop at, if given. */
1125	RTGCPTR AddrPc;
1126	/** The lowest effective stack address to stop at.
1127	* Together with cbStackPop, this forms a range of effective stack pointer
1128	* addresses that we stop for. */
1129	RTGCPTR AddrStackPop;
1130	/** The size of the stack stop area starting at AddrStackPop. */
1131	RTGCPTR cbStackPop;
1132	/** Maximum number of steps. */
1133	uint32_t cMaxSteps;
1134
1135	/** Number of steps made thus far. */
1136	uint32_t cSteps;
1137	/** Current call counting balance for step-over handling. */
1138	uint32_t uCallDepth;
1139
1140	uint32_t u32Padding; /*< Alignment padding. /
1141
1142	} SteppingFilter;
1143
1144	uint32_t au32Alignment2[2]; /*< Alignment padding. /
1145
1146	/** @name Breakpoint handling related state.
1147	* @{ */
1148	/** Array of hardware breakpoints (0..3).
1149	* This is shared among all the CPUs because life is much simpler that way. */
1150	DBGFBPHW aHwBreakpoints[4];
1151	/** @} */
1152
1153	/**
1154	* Bug check data.
1155	* @note This will not be reset on reset.
1156	*/
1157	struct
1158	{
1159	/** The ID of the CPU reporting it. */
1160	VMCPUID idCpu;
1161	/** The event associated with the bug check (gives source).
1162	* This is set to DBGFEVENT_END if no BSOD data here. */
1163	DBGFEVENTTYPE enmEvent;
1164	/** The total reset count at the time (VMGetResetCount). */
1165	uint32_t uResetNo;
1166	/** Explicit padding. */
1167	uint32_t uPadding;
1168	/** When it was reported (TMVirtualGet). */
1169	uint64_t uTimestamp;
1170	/** The bug check number.
1171	* @note This is really just 32-bit wide, see KeBugCheckEx. */
1172	uint64_t uBugCheck;
1173	/** The bug check parameters. */
1174	uint64_t auParameters[4];
1175	} BugCheck;
1176	} DBGF;
1177	AssertCompileMemberAlignment(DBGF, aHwBreakpoints, 8);
1178	AssertCompileMemberAlignment(DBGF, bmHardIntBreakpoints, 8);
1179	/** Pointer to DBGF Data. */
1180	typedef DBGF *PDBGF;
1181
1182
1183	/**
1184	* Event state (for DBGFCPU::aEvents).
1185	*/
1186	typedef enum DBGFEVENTSTATE
1187	{
1188	/** Invalid event stack entry. */
1189	DBGFEVENTSTATE_INVALID = 0,
1190	/** The current event stack entry. */
1191	DBGFEVENTSTATE_CURRENT,
1192	/** Event that should be ignored but hasn't yet actually been ignored. */
1193	DBGFEVENTSTATE_IGNORE,
1194	/** Event that has been ignored but may be restored to IGNORE should another
1195	* debug event fire before the instruction is completed. */
1196	DBGFEVENTSTATE_RESTORABLE,
1197	/** End of valid events. */
1198	DBGFEVENTSTATE_END,
1199	/** Make sure we've got a 32-bit type. */
1200	DBGFEVENTSTATE_32BIT_HACK = 0x7fffffff
1201	} DBGFEVENTSTATE;
1202
1203
1204	/** Converts a DBGFCPU pointer into a VM pointer. */
1205	#define DBGFCPU_2_VM(pDbgfCpu) ((PVM)((uint8_t *)(pDbgfCpu) + (pDbgfCpu)->offVM))
1206
1207	/**
1208	* The per CPU data for DBGF.
1209	*/
1210	typedef struct DBGFCPU
1211	{
1212	/** The offset into the VM structure.
1213	* @see DBGFCPU_2_VM(). */
1214	uint32_t offVM;
1215
1216	/** Flag whether the to invoke any owner handlers in ring-3 before dropping into the debugger. */
1217	bool fBpInvokeOwnerCallback;
1218	/** Set if we're singlestepping in raw mode.
1219	* This is checked and cleared in the \#DB handler. */
1220	bool fSingleSteppingRaw;
1221	/** Flag whether an I/O breakpoint is pending. */
1222	bool fBpIoActive;
1223	/** Flagh whether the I/O breakpoint hit before the access or after. */
1224	bool fBpIoBefore;
1225	/** Current active breakpoint handle.
1226	* This is NIL_DBGFBP if not active. It is set when a execution engine
1227	* encounters a breakpoint and returns VINF_EM_DBG_BREAKPOINT.
1228	*
1229	* @todo drop this in favor of aEvents! */
1230	DBGFBP hBpActive;
1231	/** The access mask for a pending I/O breakpoint. */
1232	uint32_t fBpIoAccess;
1233	/** The address of the access. */
1234	uint64_t uBpIoAddress;
1235	/** The value of the access. */
1236	uint64_t uBpIoValue;
1237
1238	/** The number of events on the stack (aEvents).
1239	* The pending event is the last one (aEvents[cEvents - 1]), but only when
1240	* enmState is DBGFEVENTSTATE_CURRENT. */
1241	uint32_t cEvents;
1242	/** Events - current, ignoring and ignored.
1243	*
1244	* We maintain a stack of events in order to try avoid ending up in an infinit
1245	* loop when resuming after an event fired. There are cases where we may end
1246	* generating additional events before the instruction can be executed
1247	* successfully. Like for instance an XCHG on MMIO with separate read and write
1248	* breakpoints, or a MOVSB instruction working on breakpointed MMIO as both
1249	* source and destination.
1250	*
1251	* So, when resuming after dropping into the debugger for an event, we convert
1252	* the DBGFEVENTSTATE_CURRENT event into a DBGFEVENTSTATE_IGNORE event, leaving
1253	* cEvents unchanged. If the event is reported again, we will ignore it and
1254	* tell the reporter to continue executing. The event change to the
1255	* DBGFEVENTSTATE_RESTORABLE state.
1256	*
1257	* Currently, the event reporter has to figure out that it is a nested event and
1258	* tell DBGF to restore DBGFEVENTSTATE_RESTORABLE events (and keep
1259	* DBGFEVENTSTATE_IGNORE, should they happen out of order for some weird
1260	* reason).
1261	*/
1262	struct
1263	{
1264	/** The event details. */
1265	DBGFEVENT Event;
1266	/** The RIP at which this happend (for validating ignoring). */
1267	uint64_t rip;
1268	/** The event state. */
1269	DBGFEVENTSTATE enmState;
1270	/** Alignment padding. */
1271	uint32_t u32Alignment;
1272	} aEvents[3];
1273	} DBGFCPU;
1274	AssertCompileMemberAlignment(DBGFCPU, aEvents, 8);
1275	AssertCompileMemberSizeAlignment(DBGFCPU, aEvents[0], 8);
1276	/** Pointer to DBGFCPU data. */
1277	typedef DBGFCPU *PDBGFCPU;
1278
1279	struct DBGFOSEMTWRAPPER;
1280
1281	/**
1282	* DBGF data kept in the ring-0 GVM.
1283	*/
1284	typedef struct DBGFR0PERVM
1285	{
1286	/** Pointer to the tracer instance if enabled. */
1287	R0PTRTYPE(struct DBGFTRACERINSR0 *) pTracerR0;
1288
1289	/** @name Breakpoint handling related state, Ring-0 only part.
1290	* @{ */
1291	/** The breakpoint owner table memory object. */
1292	RTR0MEMOBJ hMemObjBpOwners;
1293	/** The breakpoint owner table mapping object. */
1294	RTR0MEMOBJ hMapObjBpOwners;
1295	/** Base pointer to the breakpoint owners table. */
1296	R0PTRTYPE(PDBGFBPOWNERINTR0) paBpOwnersR0;
1297
1298	/** Global breakpoint table chunk array. */
1299	DBGFBPCHUNKR0 aBpChunks[DBGF_BP_CHUNK_COUNT];
1300	/** Breakpoint L2 lookup table chunk array. */
1301	DBGFBPL2TBLCHUNKR0 aBpL2TblChunks[DBGF_BP_L2_TBL_CHUNK_COUNT];
1302	/** The L1 lookup tables memory object. */
1303	RTR0MEMOBJ hMemObjBpLocL1;
1304	/** The L1 lookup tables mapping object. */
1305	RTR0MEMOBJ hMapObjBpLocL1;
1306	/** The I/O port breakpoint lookup tables memory object. */
1307	RTR0MEMOBJ hMemObjBpLocPortIo;
1308	/** The I/O port breakpoint lookup tables mapping object. */
1309	RTR0MEMOBJ hMapObjBpLocPortIo;
1310	/** Base pointer to the L1 locator table. */
1311	R0PTRTYPE(volatile uint32_t *) paBpLocL1R0;
1312	/** Base pointer to the L1 locator table. */
1313	R0PTRTYPE(volatile uint32_t *) paBpLocPortIoR0;
1314	/** Flag whether the breakpoint manager was initialized (on demand). */
1315	bool fInit;
1316	/** @} */
1317	} DBGFR0PERVM;
1318
1319	/**
1320	* The DBGF data kept in the UVM.
1321	*/
1322	typedef struct DBGFUSERPERVM
1323	{
1324	/** The address space database lock. */
1325	RTSEMRW hAsDbLock;
1326	/** The address space handle database. (Protected by hAsDbLock.) */
1327	R3PTRTYPE(AVLPVTREE) AsHandleTree;
1328	/** The address space process id database. (Protected by hAsDbLock.) */
1329	R3PTRTYPE(AVLU32TREE) AsPidTree;
1330	/** The address space name database. (Protected by hAsDbLock.) */
1331	R3PTRTYPE(RTSTRSPACE) AsNameSpace;
1332	/** Special address space aliases. (Protected by hAsDbLock.) */
1333	RTDBGAS volatile ahAsAliases[DBGF_AS_COUNT];
1334	/** For lazily populating the aliased address spaces. */
1335	bool volatile afAsAliasPopuplated[DBGF_AS_COUNT];
1336	/** Alignment padding. */
1337	bool afAlignment1[2];
1338	/** Debug configuration. */
1339	R3PTRTYPE(RTDBGCFG) hDbgCfg;
1340
1341	/** The register database lock. */
1342	RTSEMRW hRegDbLock;
1343	/** String space for looking up registers. (Protected by hRegDbLock.) */
1344	R3PTRTYPE(RTSTRSPACE) RegSpace;
1345	/** String space holding the register sets. (Protected by hRegDbLock.) */
1346	R3PTRTYPE(RTSTRSPACE) RegSetSpace;
1347	/** The number of registers (aliases, sub-fields and the special CPU
1348	* register aliases (eg AH) are not counted). */
1349	uint32_t cRegs;
1350	/** For early initialization by . */
1351	bool volatile fRegDbInitialized;
1352	/** Alignment padding. */
1353	bool afAlignment2[3];
1354
1355	/** Critical section protecting the Guest OS Digger data, the info handlers
1356	* and the plugins. These share to give the best possible plugin unload
1357	* race protection. */
1358	RTCRITSECTRW CritSect;
1359	/** Head of the LIFO of loaded DBGF plugins. */
1360	R3PTRTYPE(struct DBGFPLUGIN *) pPlugInHead;
1361	/** The current Guest OS digger. */
1362	R3PTRTYPE(PDBGFOS) pCurOS;
1363	/** The head of the Guest OS digger instances. */
1364	R3PTRTYPE(PDBGFOS) pOSHead;
1365	/** List of registered info handlers. */
1366	R3PTRTYPE(PDBGFINFO) pInfoFirst;
1367
1368	/** The configured tracer. */
1369	PDBGFTRACERINSR3 pTracerR3;
1370
1371	/** @name VM -> Debugger event communication.
1372	* @{ */
1373	/** The event semaphore the debugger waits on for new events to arrive. */
1374	RTSEMEVENT hEvtWait;
1375	/** Multi event semaphore the vCPUs wait on in case the debug event ringbuffer is
1376	* full and require growing (done from the thread waiting for events). */
1377	RTSEMEVENTMULTI hEvtRingBufFull;
1378	/** Fast mutex protecting the event ring from concurrent write accesses by multiple vCPUs. */
1379	RTSEMFASTMUTEX hMtxDbgEvtWr;
1380	/** Ringbuffer of events, dynamically allocated based on the number of available vCPUs
1381	* (+ some safety entries). */
1382	PDBGFEVENT paDbgEvts;
1383	/** Number of entries in the event ring buffer. */
1384	uint32_t cDbgEvtMax;
1385	/** Next free entry to write to (vCPU thread). */
1386	volatile uint32_t idxDbgEvtWrite;
1387	/** Next event entry to from (debugger thread). */
1388	volatile uint32_t idxDbgEvtRead;
1389	/** @} */
1390
1391	/** @name Breakpoint handling related state.
1392	* @{ */
1393	/** Base pointer to the breakpoint owners table. */
1394	R3PTRTYPE(PDBGFBPOWNERINT) paBpOwnersR3;
1395	/** Pointer to the bitmap denoting occupied owner entries. */
1396	R3PTRTYPE(volatile void *) pbmBpOwnersAllocR3;
1397
1398	/** Global breakpoint table chunk array. */
1399	DBGFBPCHUNKR3 aBpChunks[DBGF_BP_CHUNK_COUNT];
1400	/** Breakpoint L2 lookup table chunk array. */
1401	DBGFBPL2TBLCHUNKR3 aBpL2TblChunks[DBGF_BP_L2_TBL_CHUNK_COUNT];
1402	/** Base pointer to the L1 locator table. */
1403	R3PTRTYPE(volatile uint32_t *) paBpLocL1R3;
1404	/** Base pointer to the Port I/O breakpoint locator table. */
1405	R3PTRTYPE(volatile uint32_t *) paBpLocPortIoR3;
1406	/** Fast mutex protecting the L2 table from concurrent write accesses (EMTs
1407	* can still do read accesses without holding it while traversing the trees). */
1408	RTSEMFASTMUTEX hMtxBpL2Wr;
1409	/** Number of armed port I/O breakpoints. */
1410	volatile uint32_t cPortIoBps;
1411	/** @} */
1412
1413	/** The type database lock. */
1414	RTSEMRW hTypeDbLock;
1415	/** String space for looking up types. (Protected by hTypeDbLock.) */
1416	R3PTRTYPE(RTSTRSPACE) TypeSpace;
1417	/** For early initialization by . */
1418	bool volatile fTypeDbInitialized;
1419	/** Alignment padding. */
1420	bool afAlignment3[3];
1421
1422	} DBGFUSERPERVM;
1423	typedef DBGFUSERPERVM *PDBGFUSERPERVM;
1424	typedef DBGFUSERPERVM const *PCDBGFUSERPERVM;
1425
1426	/**
1427	* The per-CPU DBGF data kept in the UVM.
1428	*/
1429	typedef struct DBGFUSERPERVMCPU
1430	{
1431	/** The guest register set for this CPU. Can be NULL. */
1432	R3PTRTYPE(struct DBGFREGSET *) pGuestRegSet;
1433	/** The hypervisor register set for this CPU. Can be NULL. */
1434	R3PTRTYPE(struct DBGFREGSET *) pHyperRegSet;
1435
1436	/** @name Debugger -> vCPU command communication.
1437	* @{ */
1438	/** Flag whether this vCPU is currently stopped waiting in the debugger. */
1439	bool volatile fStopped;
1440	/** The Command to the vCPU.
1441	* Operated in an atomic fashion since the vCPU will poll on this.
1442	* This means that a the command data must be written before this member
1443	* is set. The VMM will reset this member to the no-command state
1444	* when it have processed it.
1445	*/
1446	DBGFCMD volatile enmDbgfCmd;
1447	/** The Command data.
1448	* Not all commands take data. */
1449	DBGFCMDDATA DbgfCmdData;
1450	/** @} */
1451
1452	} DBGFUSERPERVMCPU;
1453
1454
1455	#ifdef IN_RING3
1456	int dbgfR3AsInit(PUVM pUVM);
1457	void dbgfR3AsTerm(PUVM pUVM);
1458	void dbgfR3AsRelocate(PUVM pUVM, RTGCUINTPTR offDelta);
1459	DECLHIDDEN(int) dbgfR3BpInit(PUVM pUVM);
1460	DECLHIDDEN(int) dbgfR3BpTerm(PUVM pUVM);
1461	int dbgfR3InfoInit(PUVM pUVM);
1462	int dbgfR3InfoTerm(PUVM pUVM);
1463	int dbgfR3OSInit(PUVM pUVM);
1464	void dbgfR3OSTermPart1(PUVM pUVM);
1465	void dbgfR3OSTermPart2(PUVM pUVM);
1466	int dbgfR3OSStackUnwindAssist(PUVM pUVM, VMCPUID idCpu, PDBGFSTACKFRAME pFrame, PRTDBGUNWINDSTATE pState,
1467	PCCPUMCTX pInitialCtx, RTDBGAS hAs, uint64_t *puScratch);
1468	int dbgfR3RegInit(PUVM pUVM);
1469	void dbgfR3RegTerm(PUVM pUVM);
1470	int dbgfR3TraceInit(PVM pVM);
1471	void dbgfR3TraceRelocate(PVM pVM);
1472	void dbgfR3TraceTerm(PVM pVM);
1473	DECLHIDDEN(int) dbgfR3TypeInit(PUVM pUVM);
1474	DECLHIDDEN(void) dbgfR3TypeTerm(PUVM pUVM);
1475	int dbgfR3PlugInInit(PUVM pUVM);
1476	void dbgfR3PlugInTerm(PUVM pUVM);
1477	int dbgfR3BugCheckInit(PVM pVM);
1478	DECLHIDDEN(int) dbgfR3TracerInit(PVM pVM);
1479	DECLHIDDEN(void) dbgfR3TracerTerm(PVM pVM);
1480
1481	/**
1482	* DBGF disassembler state (substate of DISSTATE).
1483	*/
1484	typedef struct DBGFDISSTATE
1485	{
1486	/** Pointer to the current instruction. */
1487	PCDISOPCODE pCurInstr;
1488	/** Size of the instruction in bytes. */
1489	uint32_t cbInstr;
1490	/** Parameters. */
1491	DISOPPARAM Param1;
1492	DISOPPARAM Param2;
1493	DISOPPARAM Param3;
1494	DISOPPARAM Param4;
1495	} DBGFDISSTATE;
1496	/** Pointer to a DBGF disassembler state. */
1497	typedef DBGFDISSTATE *PDBGFDISSTATE;
1498
1499	DECLHIDDEN(int) dbgfR3DisasInstrStateEx(PUVM pUVM, VMCPUID idCpu, PDBGFADDRESS pAddr, uint32_t fFlags,
1500	char *pszOutput, uint32_t cbOutput, PDBGFDISSTATE pDisState);
1501
1502	#endif /* IN_RING3 */
1503
1504	#ifdef IN_RING0
1505	DECLHIDDEN(void) dbgfR0TracerDestroy(PGVM pGVM, PDBGFTRACERINSR0 pTracer);
1506	DECLHIDDEN(void) dbgfR0BpInit(PGVM pGVM);
1507	DECLHIDDEN(void) dbgfR0BpDestroy(PGVM pGVM);
1508	#endif /* !IN_RING0 */
1509
1510	/** @} */
1511
1512	#endif /* !VMM_INCLUDED_SRC_include_DBGFInternal_h */

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source: vbox/trunk/src/VBox/VMM/include/DBGFInternal.h@ 94249

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