DBGCRemoteKd.cpp@ 103574

Last change on this file since 103574 was 103433, checked in by vboxsync, 10 months ago
Debugger: Some warning fixes, bugref:3409
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1	/* $Id: DBGCRemoteKd.cpp 103433 2024-02-19 12:11:34Z vboxsync $ */
2	/** @file
3	* DBGC - Debugger Console, Windows Kd Remote Stub.
4	*/
5
6	/*
7	* Copyright (C) 2020-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#include <VBox/dbg.h>
33	#include <VBox/vmm/dbgf.h>
34	#include <VBox/vmm/vmapi.h> /* VMR3GetVM() */
35	#include <VBox/vmm/hm.h> /* HMR3IsEnabled */
36	#include <VBox/vmm/nem.h> /* NEMR3IsEnabled */
37	#include <iprt/assertcompile.h>
38	#include <iprt/cdefs.h>
39	#include <iprt/err.h>
40	#include <iprt/list.h>
41	#include <iprt/mem.h>
42	#include <iprt/sg.h>
43	#include <iprt/string.h>
44	#include <iprt/time.h>
45	#include <iprt/x86.h>
46	#include <iprt/formats/pecoff.h>
47	#include <iprt/formats/mz.h>
48
49	#include <stdlib.h>
50
51	#include "DBGCInternal.h"
52
53
54	/*********************************************************************************************************************************
55	* Defined Constants And Macros *
56	*********************************************************************************************************************************/
57
58	/** Number of milliseconds we wait for new data to arrive when a new packet was detected. */
59	#define DBGC_KD_RECV_TIMEOUT_MS UINT32_C(1000)
60
61	/** NT status code - Success. */
62	#define NTSTATUS_SUCCESS 0
63	/** NT status code - buffer overflow. */
64	#define NTSTATUS_BUFFER_OVERFLOW UINT32_C(0x80000005)
65	/** NT status code - operation unsuccesful. */
66	#define NTSTATUS_UNSUCCESSFUL UINT32_C(0xc0000001)
67	/** NT status code - operation not implemented. */
68	#define NTSTATUS_NOT_IMPLEMENTED UINT32_C(0xc0000002)
69	/** NT status code - Object not found. */
70	#define NTSTATUS_NOT_FOUND UINT32_C(0xc0000225)
71
72	/** Offset where the KD version block pointer is stored in the KPCR.
73	* From: https://www.geoffchappell.com/studies/windows/km/ntoskrnl/structs/kprcb/amd64.htm */
74	#define KD_KPCR_VERSION_BLOCK_ADDR_OFF 0x34
75
76
77	/*********************************************************************************************************************************
78	* Structures and Typedefs *
79	*********************************************************************************************************************************/
80
81	/**
82	* KD packet header as sent over the wire.
83	*/
84	typedef struct KDPACKETHDR
85	{
86	/** Packet signature (leader) - defines the type of packet. */
87	uint32_t u32Signature;
88	/** Packet (sub) type. */
89	uint16_t u16SubType;
90	/** Size of the packet body in bytes.*/
91	uint16_t cbBody;
92	/** Packet ID. */
93	uint32_t idPacket;
94	/** Checksum of the packet body. */
95	uint32_t u32ChkSum;
96	} KDPACKETHDR;
97	AssertCompileSize(KDPACKETHDR, 16);
98	/** Pointer to a packet header. */
99	typedef KDPACKETHDR *PKDPACKETHDR;
100	/** Pointer to a const packet header. */
101	typedef const KDPACKETHDR *PCKDPACKETHDR;
102
103	/** Signature for a data packet. */
104	#define KD_PACKET_HDR_SIGNATURE_DATA UINT32_C(0x30303030)
105	/** First byte for a data packet header. */
106	#define KD_PACKET_HDR_SIGNATURE_DATA_BYTE 0x30
107	/** Signature for a control packet. */
108	#define KD_PACKET_HDR_SIGNATURE_CONTROL UINT32_C(0x69696969)
109	/** First byte for a control packet header. */
110	#define KD_PACKET_HDR_SIGNATURE_CONTROL_BYTE 0x69
111	/** Signature for a breakin packet. */
112	#define KD_PACKET_HDR_SIGNATURE_BREAKIN UINT32_C(0x62626262)
113	/** First byte for a breakin packet header. */
114	#define KD_PACKET_HDR_SIGNATURE_BREAKIN_BYTE 0x62
115
116	/** @name Packet sub types.
117	* @{ */
118	#define KD_PACKET_HDR_SUB_TYPE_STATE_CHANGE32 UINT16_C(1)
119	#define KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE UINT16_C(2)
120	#define KD_PACKET_HDR_SUB_TYPE_DEBUG_IO UINT16_C(3)
121	#define KD_PACKET_HDR_SUB_TYPE_ACKNOWLEDGE UINT16_C(4)
122	#define KD_PACKET_HDR_SUB_TYPE_RESEND UINT16_C(5)
123	#define KD_PACKET_HDR_SUB_TYPE_RESET UINT16_C(6)
124	#define KD_PACKET_HDR_SUB_TYPE_STATE_CHANGE64 UINT16_C(7)
125	#define KD_PACKET_HDR_SUB_TYPE_POLL_BREAKIN UINT16_C(8)
126	#define KD_PACKET_HDR_SUB_TYPE_TRACE_IO UINT16_C(9)
127	#define KD_PACKET_HDR_SUB_TYPE_CONTROL_REQUEST UINT16_C(10)
128	#define KD_PACKET_HDR_SUB_TYPE_FILE_IO UINT16_C(11)
129	#define KD_PACKET_HDR_SUB_TYPE_MAX UINT16_C(12)
130	/** @} */
131
132	/** Initial packet ID value. */
133	#define KD_PACKET_HDR_ID_INITIAL UINT32_C(0x80800800)
134	/** Packet ID value after a resync. */
135	#define KD_PACKET_HDR_ID_RESET UINT32_C(0x80800000)
136
137	/** Trailing byte of a packet. */
138	#define KD_PACKET_TRAILING_BYTE 0xaa
139
140
141	/** Maximum number of parameters in the exception record. */
142	#define KDPACKETEXCP_PARMS_MAX 15
143
144	/**
145	* 64bit exception record.
146	*/
147	typedef struct KDPACKETEXCP64
148	{
149	/** The exception code identifying the excpetion. */
150	uint32_t u32ExcpCode;
151	/** Flags associated with the exception. */
152	uint32_t u32ExcpFlags;
153	/** Pointer to a chained exception record. */
154	uint64_t u64PtrExcpRecNested;
155	/** Address where the exception occurred. */
156	uint64_t u64PtrExcpAddr;
157	/** Number of parameters in the exception information array. */
158	uint32_t cExcpParms;
159	/** Alignment. */
160	uint32_t u32Alignment;
161	/** Exception parameters array. */
162	uint64_t au64ExcpParms[KDPACKETEXCP_PARMS_MAX];
163	} KDPACKETEXCP64;
164	AssertCompileSize(KDPACKETEXCP64, 152);
165	/** Pointer to an exception record. */
166	typedef KDPACKETEXCP64 *PKDPACKETEXCP64;
167	/** Pointer to a const exception record. */
168	typedef const KDPACKETEXCP64 *PCKDPACKETEXCP64;
169
170
171	/**
172	* amd64 NT context structure.
173	*/
174	typedef struct NTCONTEXT64
175	{
176	/** The P[1-6]Home members. */
177	uint64_t au64PHome[6];
178	/** Context flags indicating the valid bits, see NTCONTEXT_F_XXX. */
179	uint32_t fContext;
180	/** MXCSR register. */
181	uint32_t u32RegMxCsr;
182	/** CS selector. */
183	uint16_t u16SegCs;
184	/** DS selector. */
185	uint16_t u16SegDs;
186	/** ES selector. */
187	uint16_t u16SegEs;
188	/** FS selector. */
189	uint16_t u16SegFs;
190	/** GS selector. */
191	uint16_t u16SegGs;
192	/** SS selector. */
193	uint16_t u16SegSs;
194	/** EFlags register. */
195	uint32_t u32RegEflags;
196	/** DR0 register. */
197	uint64_t u64RegDr0;
198	/** DR1 register. */
199	uint64_t u64RegDr1;
200	/** DR2 register. */
201	uint64_t u64RegDr2;
202	/** DR3 register. */
203	uint64_t u64RegDr3;
204	/** DR6 register. */
205	uint64_t u64RegDr6;
206	/** DR7 register. */
207	uint64_t u64RegDr7;
208	/** RAX register. */
209	uint64_t u64RegRax;
210	/** RCX register. */
211	uint64_t u64RegRcx;
212	/** RDX register. */
213	uint64_t u64RegRdx;
214	/** RBX register. */
215	uint64_t u64RegRbx;
216	/** RSP register. */
217	uint64_t u64RegRsp;
218	/** RBP register. */
219	uint64_t u64RegRbp;
220	/** RSI register. */
221	uint64_t u64RegRsi;
222	/** RDI register. */
223	uint64_t u64RegRdi;
224	/** R8 register. */
225	uint64_t u64RegR8;
226	/** R9 register. */
227	uint64_t u64RegR9;
228	/** R10 register. */
229	uint64_t u64RegR10;
230	/** R11 register. */
231	uint64_t u64RegR11;
232	/** R12 register. */
233	uint64_t u64RegR12;
234	/** R13 register. */
235	uint64_t u64RegR13;
236	/** R14 register. */
237	uint64_t u64RegR14;
238	/** R15 register. */
239	uint64_t u64RegR15;
240	/** RIP register. */
241	uint64_t u64RegRip;
242	/** Extended floating point save area. */
243	X86FXSTATE FxSave;
244	/** AVX(?) vector registers. */
245	RTUINT128U aRegsVec[26];
246	/** Vector control register. */
247	uint64_t u64RegVecCtrl;
248	/** Debug control. */
249	uint64_t u64DbgCtrl;
250	/** @todo lbr */
251	uint64_t u64LastBrToRip;
252	uint64_t u64LastBrFromRip;
253	uint64_t u64LastExcpToRip;
254	uint64_t u64LastExcpFromRip;
255	} NTCONTEXT64;
256	AssertCompileSize(NTCONTEXT64, 1232);
257	AssertCompileMemberOffset(NTCONTEXT64, FxSave, 0x100);
258	AssertCompileMemberOffset(NTCONTEXT64, aRegsVec, 0x300);
259	/** Pointer to an amd64 NT context. */
260	typedef NTCONTEXT64 *PNTCONTEXT64;
261	/** Pointer to a const amd64 NT context. */
262	typedef const NTCONTEXT64 *PCNTCONTEXT64;
263
264
265	/**
266	* 64bit [GI]DT descriptor.
267	*/
268	typedef struct NTKCONTEXTDESC64
269	{
270	/** Alignment. */
271	uint16_t au16Alignment[3];
272	/** Limit. */
273	uint16_t u16Limit;
274	/** Base address. */
275	uint64_t u64PtrBase;
276	} NTKCONTEXTDESC64;
277	AssertCompileSize(NTKCONTEXTDESC64, 2 * 8);
278	/** Pointer to a 64bit [GI]DT descriptor. */
279	typedef NTKCONTEXTDESC64 *PNTKCONTEXTDESC64;
280	/** Pointer to a const 64bit [GI]DT descriptor. */
281	typedef const NTKCONTEXTDESC64 *PCNTKCONTEXTDESC64;
282
283
284	/**
285	* Kernel context as queried by KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE
286	*/
287	typedef struct NTKCONTEXT64
288	{
289	/** CR0 register. */
290	uint64_t u64RegCr0;
291	/** CR2 register. */
292	uint64_t u64RegCr2;
293	/** CR3 register. */
294	uint64_t u64RegCr3;
295	/** CR4 register. */
296	uint64_t u64RegCr4;
297	/** DR0 register. */
298	uint64_t u64RegDr0;
299	/** DR1 register. */
300	uint64_t u64RegDr1;
301	/** DR2 register. */
302	uint64_t u64RegDr2;
303	/** DR3 register. */
304	uint64_t u64RegDr3;
305	/** DR6 register. */
306	uint64_t u64RegDr6;
307	/** DR7 register. */
308	uint64_t u64RegDr7;
309	/** GDTR. */
310	NTKCONTEXTDESC64 Gdtr;
311	/** IDTR. */
312	NTKCONTEXTDESC64 Idtr;
313	/** TR register. */
314	uint16_t u16RegTr;
315	/** LDTR register. */
316	uint16_t u16RegLdtr;
317	/** MXCSR register. */
318	uint32_t u32RegMxCsr;
319	/** Debug control. */
320	uint64_t u64DbgCtrl;
321	/** @todo lbr */
322	uint64_t u64LastBrToRip;
323	uint64_t u64LastBrFromRip;
324	uint64_t u64LastExcpToRip;
325	uint64_t u64LastExcpFromRip;
326	/** CR8 register. */
327	uint64_t u64RegCr8;
328	/** GS base MSR register. */
329	uint64_t u64MsrGsBase;
330	/** Kernel GS base MSR register. */
331	uint64_t u64MsrKernelGsBase;
332	/** STAR MSR register. */
333	uint64_t u64MsrStar;
334	/** LSTAR MSR register. */
335	uint64_t u64MsrLstar;
336	/** CSTAR MSR register. */
337	uint64_t u64MsrCstar;
338	/** SFMASK MSR register. */
339	uint64_t u64MsrSfMask;
340	/** XCR0 register. */
341	uint64_t u64RegXcr0;
342	/** Standard context. */
343	NTCONTEXT64 Ctx;
344	} NTKCONTEXT64;
345	AssertCompileMemberOffset(NTKCONTEXT64, Ctx, 224);
346	/** Pointer to an amd64 NT context. */
347	typedef NTKCONTEXT64 *PNTKCONTEXT64;
348	/** Pointer to a const amd64 NT context. */
349	typedef const NTKCONTEXT64 *PCNTKCONTEXT64;
350
351
352	/**
353	* 32bit context FPU save area.
354	*/
355	typedef struct NTCONTEXT32_FPU_SAVE_AREA
356	{
357	uint32_t u32CtrlWord;
358	uint32_t u32StatusWord;
359	uint32_t u32TagWord;
360	uint32_t u32ErrorOff;
361	uint32_t u32ErrorSel;
362	uint32_t u32DataOff;
363	uint32_t u32DataSel;
364	X86FPUMMX aFpuRegs[8];
365	uint32_t u32Cr0Npx;
366	} NTCONTEXT32_FPU_SAVE_AREA;
367	/** Pointer to an 32bit context FPU save area. */
368	typedef NTCONTEXT32_FPU_SAVE_AREA *PNTCONTEXT32_FPU_SAVE_AREA;
369	/** Pointer to a const 32bit context FPU save area. */
370	typedef const NTCONTEXT32_FPU_SAVE_AREA *PCNTCONTEXT32_FPU_SAVE_AREA;
371
372
373	/**
374	* i386 NT context structure.
375	*/
376	typedef struct NTCONTEXT32
377	{
378	/** Context flags indicating the valid bits, see NTCONTEXT_F_XXX. */
379	uint32_t fContext;
380	/** DR0 register. */
381	uint32_t u32RegDr0;
382	/** DR1 register. */
383	uint32_t u32RegDr1;
384	/** DR2 register. */
385	uint32_t u32RegDr2;
386	/** DR3 register. */
387	uint32_t u32RegDr3;
388	/** DR6 register. */
389	uint32_t u32RegDr6;
390	/** DR7 register. */
391	uint32_t u32RegDr7;
392	/** Floating point save area. */
393	NTCONTEXT32_FPU_SAVE_AREA FloatSave;
394	/** GS segment. */
395	uint32_t u32SegGs;
396	/** FS segment. */
397	uint32_t u32SegFs;
398	/** ES segment. */
399	uint32_t u32SegEs;
400	/** DS segment. */
401	uint32_t u32SegDs;
402	/** EDI register. */
403	uint32_t u32RegEdi;
404	/** ESI register. */
405	uint32_t u32RegEsi;
406	/** EBX register. */
407	uint32_t u32RegEbx;
408	/** EDX register. */
409	uint32_t u32RegEdx;
410	/** ECX register. */
411	uint32_t u32RegEcx;
412	/** EAX register. */
413	uint32_t u32RegEax;
414	/** EBP register. */
415	uint32_t u32RegEbp;
416	/** EIP register. */
417	uint32_t u32RegEip;
418	/** CS segment. */
419	uint32_t u32SegCs;
420	/** EFLAGS register. */
421	uint32_t u32RegEflags;
422	/** ESP register. */
423	uint32_t u32RegEsp;
424	/** SS segment. */
425	uint32_t u32SegSs;
426	/** @todo Extended registers */
427	uint8_t abRegsExtended[512];
428	} NTCONTEXT32;
429	AssertCompileSize(NTCONTEXT32, 716);
430	/** Pointer to an i386 NT context. */
431	typedef NTCONTEXT32 *PNTCONTEXT32;
432	/** Pointer to a const i386 NT context. */
433	typedef const NTCONTEXT32 *PCNTCONTEXT32;
434
435
436	/**
437	* 32bit [GI]DT descriptor.
438	*/
439	typedef struct NTKCONTEXTDESC32
440	{
441	/** Alignment. */
442	uint16_t u16Alignment;
443	/** Limit. */
444	uint16_t u16Limit;
445	/** Base address. */
446	uint32_t u32PtrBase;
447	} NTKCONTEXTDESC32;
448	AssertCompileSize(NTKCONTEXTDESC32, 2 * 4);
449	/** Pointer to an 32bit [GI]DT descriptor. */
450	typedef NTKCONTEXTDESC32 *PNTKCONTEXTDESC32;
451	/** Pointer to a const 32bit [GI]DT descriptor. */
452	typedef const NTKCONTEXTDESC32 *PCNTKCONTEXTDESC32;
453
454
455	/**
456	* 32bit Kernel context as queried by KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE
457	*/
458	typedef struct NTKCONTEXT32
459	{
460	/** CR0 register. */
461	uint32_t u32RegCr0;
462	/** CR2 register. */
463	uint32_t u32RegCr2;
464	/** CR3 register. */
465	uint32_t u32RegCr3;
466	/** CR4 register. */
467	uint32_t u32RegCr4;
468	/** DR0 register. */
469	uint32_t u32RegDr0;
470	/** DR1 register. */
471	uint32_t u32RegDr1;
472	/** DR2 register. */
473	uint32_t u32RegDr2;
474	/** DR3 register. */
475	uint32_t u32RegDr3;
476	/** DR6 register. */
477	uint32_t u32RegDr6;
478	/** DR7 register. */
479	uint32_t u32RegDr7;
480	/** GDTR. */
481	NTKCONTEXTDESC32 Gdtr;
482	/** IDTR. */
483	NTKCONTEXTDESC32 Idtr;
484	/** TR register. */
485	uint16_t u16RegTr;
486	/** LDTR register. */
487	uint16_t u16RegLdtr;
488	/** Padding. */
489	uint8_t abPad[24];
490	} NTKCONTEXT32;
491	AssertCompileSize(NTKCONTEXT32, 84);
492	/** Pointer to an i386 NT context. */
493	typedef NTKCONTEXT32 *PNTKCONTEXT32;
494	/** Pointer to a const i386 NT context. */
495	typedef const NTKCONTEXT32 *PCNTKCONTEXT32;
496
497
498	/** x86 context. */
499	#define NTCONTEXT_F_X86 UINT32_C(0x00010000)
500	/** AMD64 context. */
501	#define NTCONTEXT_F_AMD64 UINT32_C(0x00100000)
502	/** Control registers valid (CS, (R)SP, (R)IP, FLAGS and BP). */
503	#define NTCONTEXT_F_CONTROL RT_BIT_32(0)
504	/** Integer registers valid. */
505	#define NTCONTEXT_F_INTEGER RT_BIT_32(1)
506	/** Segment registers valid. */
507	#define NTCONTEXT_F_SEGMENTS RT_BIT_32(2)
508	/** Floating point registers valid. */
509	#define NTCONTEXT_F_FLOATING_POINT RT_BIT_32(3)
510	/** Debug registers valid. */
511	#define NTCONTEXT_F_DEBUG RT_BIT_32(4)
512	/** Extended registers valid (x86 only). */
513	#define NTCONTEXT_F_EXTENDED RT_BIT_32(5)
514	/** Full x86 context valid. */
515	#define NTCONTEXT32_F_FULL (NTCONTEXT_F_X86 \| NTCONTEXT_F_CONTROL \| NTCONTEXT_F_INTEGER \| NTCONTEXT_F_SEGMENTS)
516	/** Full amd64 context valid. */
517	#define NTCONTEXT64_F_FULL (NTCONTEXT_F_AMD64 \| NTCONTEXT_F_CONTROL \| NTCONTEXT_F_INTEGER \| NTCONTEXT_F_SEGMENTS)
518
519
520	/**
521	* 32bit exception record.
522	*/
523	typedef struct KDPACKETEXCP32
524	{
525	/** The exception code identifying the excpetion. */
526	uint32_t u32ExcpCode;
527	/** Flags associated with the exception. */
528	uint32_t u32ExcpFlags;
529	/** Pointer to a chained exception record. */
530	uint32_t u32PtrExcpRecNested;
531	/** Address where the exception occurred. */
532	uint32_t u32PtrExcpAddr;
533	/** Number of parameters in the exception information array. */
534	uint32_t cExcpParms;
535	/** Exception parameters array. */
536	uint32_t au32ExcpParms[KDPACKETEXCP_PARMS_MAX];
537	} KDPACKETEXCP32;
538	AssertCompileSize(KDPACKETEXCP32, 80);
539	/** Pointer to an exception record. */
540	typedef KDPACKETEXCP32 *PKDPACKETEXCP32;
541	/** Pointer to a const exception record. */
542	typedef const KDPACKETEXCP32 *PCKDPACKETEXCP32;
543
544
545	/** @name Exception codes.
546	* @{ */
547	/** A breakpoint was hit. */
548	#define KD_PACKET_EXCP_CODE_BKPT UINT32_C(0x80000003)
549	/** An instruction was single stepped. */
550	#define KD_PACKET_EXCP_CODE_SINGLE_STEP UINT32_C(0x80000004)
551	/** @} */
552
553
554	/** Maximum number of bytes in the instruction stream. */
555	#define KD_PACKET_CTRL_REPORT_INSN_STREAM_MAX 16
556
557	/**
558	* 64bit control report record.
559	*/
560	typedef struct KDPACKETCTRLREPORT64
561	{
562	/** Value of DR6. */
563	uint64_t u64RegDr6;
564	/** Value of DR7. */
565	uint64_t u64RegDr7;
566	/** EFLAGS. */
567	uint32_t u32RegEflags;
568	/** Number of instruction bytes in the instruction stream. */
569	uint16_t cbInsnStream;
570	/** Report flags. */
571	uint16_t fFlags;
572	/** The instruction stream. */
573	uint8_t abInsn[KD_PACKET_CTRL_REPORT_INSN_STREAM_MAX];
574	/** CS selector. */
575	uint16_t u16SegCs;
576	/** DS selector. */
577	uint16_t u16SegDs;
578	/** ES selector. */
579	uint16_t u16SegEs;
580	/** FS selector. */
581	uint16_t u16SegFs;
582	} KDPACKETCTRLREPORT64;
583	AssertCompileSize(KDPACKETCTRLREPORT64, 2 * 8 + 4 + 2 * 2 + 16 + 4 * 2);
584	/** Pointer to a control report record. */
585	typedef KDPACKETCTRLREPORT64 *PKDPACKETCTRLREPORT64;
586	/** Pointer to a const control report record. */
587	typedef const KDPACKETCTRLREPORT64 *PCKDPACKETCTRLREPORT64;
588
589
590	/**
591	* 64bit state change packet body.
592	*/
593	typedef struct KDPACKETSTATECHANGE64
594	{
595	/** The new state. */
596	uint32_t u32StateNew;
597	/** The processor level. */
598	uint16_t u16CpuLvl;
599	/** The processor ID generating the state change. */
600	uint16_t idCpu;
601	/** Number of processors in the system. */
602	uint32_t cCpus;
603	/** Alignment. */
604	uint32_t u32Alignment;
605	/** The thread ID currently executing when the state change occurred. */
606	uint64_t idThread;
607	/** Program counter of the thread. */
608	uint64_t u64RipThread;
609	/** Data based on the state. */
610	union
611	{
612	/** Exception occurred data. */
613	struct
614	{
615	/** The exception record. */
616	KDPACKETEXCP64 ExcpRec;
617	/** First chance(?). */
618	uint32_t u32FirstChance;
619	} Exception;
620	} u;
621	/** The control report */
622	union
623	{
624	/** AMD64 control report. */
625	KDPACKETCTRLREPORT64 Amd64;
626	} uCtrlReport;
627	} KDPACKETSTATECHANGE64;
628	//AssertCompileSize(KDPACKETSTATECHANGE64, 4 + 2 * 2 + 2 * 4 + 2 * 8 + sizeof(KDPACKETEXCP64) + 4 + sizeof(KDPACKETCTRLREPORT64));
629	/** Pointer to a 64bit state change packet body. */
630	typedef KDPACKETSTATECHANGE64 *PKDPACKETSTATECHANGE64;
631	/** Pointer to a const 64bit state change packet body. */
632	typedef const KDPACKETSTATECHANGE64 *PCKDPACKETSTATECHANGE64;
633
634
635	/** @name State change state types.
636	* @{ */
637	/** Minimum state change type. */
638	#define KD_PACKET_STATE_CHANGE_MIN UINT32_C(0x00003030)
639	/** An exception occured. */
640	#define KD_PACKET_STATE_CHANGE_EXCEPTION KD_PACKET_STATE_CHANGE_MIN
641	/** Symbols were loaded(?). */
642	#define KD_PACKET_STATE_CHANGE_LOAD_SYMBOLS UINT32_C(0x00003031)
643	/** Command string (custom command was executed?). */
644	#define KD_PACKET_STATE_CHANGE_CMD_STRING UINT32_C(0x00003032)
645	/** Maximum state change type (exclusive). */
646	#define KD_PACKET_STATE_CHANGE_MAX UINT32_C(0x00003033)
647	/** @} */
648
649
650	/**
651	* Debug I/O payload.
652	*/
653	typedef struct KDPACKETDEBUGIO
654	{
655	/** Debug I/O payload type (KD_PACKET_DEBUG_IO_STRING). */
656	uint32_t u32Type;
657	/** The processor level. */
658	uint16_t u16CpuLvl;
659	/** The processor ID generating this packet. */
660	uint16_t idCpu;
661	/** Type dependent data. */
662	union
663	{
664	/** Debug string sent. */
665	struct
666	{
667	/** Length of the string following in bytes. */
668	uint32_t cbStr;
669	/** Some padding it looks like. */
670	uint32_t u32Pad;
671	} Str;
672	/** Debug prompt. */
673	struct
674	{
675	/** Length of prompt. */
676	uint32_t cbPrompt;
677	/** Size of the string returned on success. */
678	uint32_t cbReturn;
679	} Prompt;
680	} u;
681	} KDPACKETDEBUGIO;
682	AssertCompileSize(KDPACKETDEBUGIO, 16);
683	/** Pointer to a Debug I/O payload. */
684	typedef KDPACKETDEBUGIO *PKDPACKETDEBUGIO;
685	/** Pointer to a const Debug I/O payload. */
686	typedef const KDPACKETDEBUGIO *PCKDPACKETDEBUGIO;
687
688
689	/** @name Debug I/O types.
690	* @{ */
691	/** Debug string output (usually DbgPrint() and friends). */
692	#define KD_PACKET_DEBUG_IO_STRING UINT32_C(0x00003230)
693	/** Get debug string (DbgPrompt()). */
694	#define KD_PACKET_DEBUG_IO_GET_STRING UINT32_C(0x00003231)
695	/** @} */
696
697
698	/**
699	* 64bit get version manipulate payload.
700	*/
701	typedef struct KDPACKETMANIPULATE_GETVERSION64
702	{
703	/** Major version. */
704	uint16_t u16VersMaj;
705	/** Minor version. */
706	uint16_t u16VersMin;
707	/** Protocol version. */
708	uint8_t u8VersProtocol;
709	/** KD secondary version. */
710	uint8_t u8VersKdSecondary;
711	/** Flags. */
712	uint16_t fFlags;
713	/** Machine type. */
714	uint16_t u16MachineType;
715	/** Maximum packet type. */
716	uint8_t u8MaxPktType;
717	/** Maximum state change */
718	uint8_t u8MaxStateChange;
719	/** Maximum manipulate request ID. */
720	uint8_t u8MaxManipulate;
721	/** Some simulation flag. */
722	uint8_t u8Simulation;
723	/** Padding. */
724	uint16_t u16Padding;
725	/** Kernel base. */
726	uint64_t u64PtrKernBase;
727	/** Pointer of the loaded module list head. */
728	uint64_t u64PtrPsLoadedModuleList;
729	/** Pointer of the debugger data list. */
730	uint64_t u64PtrDebuggerDataList;
731	} KDPACKETMANIPULATE_GETVERSION64;
732	AssertCompileSize(KDPACKETMANIPULATE_GETVERSION64, 40);
733	/** Pointer to a 64bit get version manipulate payload. */
734	typedef KDPACKETMANIPULATE_GETVERSION64 *PKDPACKETMANIPULATE_GETVERSION64;
735	/** Pointer to a const 64bit get version manipulate payload. */
736	typedef const KDPACKETMANIPULATE_GETVERSION64 *PCKDPACKETMANIPULATE_GETVERSION64;
737
738
739	/** @name Get version flags.
740	* @{ */
741	/** Flag whether this is a multi processor kernel. */
742	#define KD_PACKET_MANIPULATE64_GET_VERSION_F_MP RT_BIT_32(0)
743	/** Flag whether the pointer is 64bit. */
744	#define KD_PACKET_MANIPULATE64_GET_VERSION_F_PTR64 RT_BIT_32(2)
745	/** @} */
746
747
748	/**
749	* 64bit memory transfer manipulate payload.
750	*/
751	typedef struct KDPACKETMANIPULATE_XFERMEM64
752	{
753	/** Target base address. */
754	uint64_t u64PtrTarget;
755	/** Requested number of bytes to transfer*/
756	uint32_t cbXferReq;
757	/** Number of bytes actually transferred (response). */
758	uint32_t cbXfered;
759	/** Some padding?. */
760	uint64_t au64Pad[3];
761	} KDPACKETMANIPULATE_XFERMEM64;
762	AssertCompileSize(KDPACKETMANIPULATE_XFERMEM64, 40);
763	/** Pointer to a 64bit memory transfer manipulate payload. */
764	typedef KDPACKETMANIPULATE_XFERMEM64 *PKDPACKETMANIPULATE_XFERMEM64;
765	/** Pointer to a const 64bit memory transfer manipulate payload. */
766	typedef const KDPACKETMANIPULATE_XFERMEM64 *PCKDPACKETMANIPULATE_XFERMEM64;
767
768
769	/**
770	* 64bit control space transfer manipulate payload.
771	*
772	* @note Same layout as the memory transfer but the pointer has a different meaning so
773	* we moved it into a separate request structure.
774	*/
775	typedef struct KDPACKETMANIPULATE_XFERCTRLSPACE64
776	{
777	/** Identifier of the item to transfer in the control space. */
778	uint64_t u64IdXfer;
779	/** Requested number of bytes to transfer*/
780	uint32_t cbXferReq;
781	/** Number of bytes actually transferred (response). */
782	uint32_t cbXfered;
783	/** Some padding?. */
784	uint64_t au64Pad[3];
785	} KDPACKETMANIPULATE_XFERCTRLSPACE64;
786	AssertCompileSize(KDPACKETMANIPULATE_XFERCTRLSPACE64, 40);
787	/** Pointer to a 64bit memory transfer manipulate payload. */
788	typedef KDPACKETMANIPULATE_XFERCTRLSPACE64 *PKDPACKETMANIPULATE_XFERCTRLSPACE64;
789	/** Pointer to a const 64bit memory transfer manipulate payload. */
790	typedef const KDPACKETMANIPULATE_XFERCTRLSPACE64 *PCKDPACKETMANIPULATE_XFERCTRLSPACE64;
791
792
793	/** @name Known control space identifiers.
794	* @{ */
795	/** Read/Write KPCR address. */
796	#define KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCR UINT64_C(0)
797	/** Read/Write KPCRB address. */
798	#define KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCRB UINT64_C(1)
799	/** Read/Write Kernel context. */
800	#define KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KCTX UINT64_C(2)
801	/** Read/Write current kernel thread. */
802	#define KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KTHRD UINT64_C(3)
803	/** @} */
804
805
806	/**
807	* 64bit restore breakpoint manipulate payload.
808	*/
809	typedef struct KDPACKETMANIPULATE_RESTOREBKPT64
810	{
811	/** The breakpoint handle to restore. */
812	uint32_t u32HndBkpt;
813	/** Blows up the request to the required size. */
814	uint8_t abPad[36];
815	} KDPACKETMANIPULATE_RESTOREBKPT64;
816	AssertCompileSize(KDPACKETMANIPULATE_RESTOREBKPT64, 40);
817	/** Pointer to a 64bit restore breakpoint manipulate payload. */
818	typedef KDPACKETMANIPULATE_RESTOREBKPT64 *PKDPACKETMANIPULATE_RESTOREBKPT64;
819	/** Pointer to a const 64bit restore breakpoint manipulate payload. */
820	typedef const KDPACKETMANIPULATE_RESTOREBKPT64 *PCKDPACKETMANIPULATE_RESTOREBKPT64;
821
822
823	/**
824	* 64bit write breakpoint manipulate payload.
825	*/
826	typedef struct KDPACKETMANIPULATE_WRITEBKPT64
827	{
828	/** Where to write the breakpoint. */
829	uint64_t u64PtrBkpt;
830	/** The breakpoint handle returned in the response. */
831	uint32_t u32HndBkpt;
832	/** Blows up the request to the required size. */
833	uint8_t abPad[28];
834	} KDPACKETMANIPULATE_WRITEBKPT64;
835	AssertCompileSize(KDPACKETMANIPULATE_WRITEBKPT64, 40);
836	/** Pointer to a 64bit write breakpoint manipulate payload. */
837	typedef KDPACKETMANIPULATE_WRITEBKPT64 *PKDPACKETMANIPULATE_WRITEBKPT64;
838	/** Pointer to a const 64bit write breakpoint manipulate payload. */
839	typedef const KDPACKETMANIPULATE_WRITEBKPT64 *PCKDPACKETMANIPULATE_WRITEBKPT64;
840
841
842	/**
843	* Context extended manipulate payload.
844	*/
845	typedef struct KDPACKETMANIPULATE_CONTEXTEX
846	{
847	/** Where to start copying the context. */
848	uint32_t offStart;
849	/** Number of bytes to transfer. */
850	uint32_t cbXfer;
851	/** Number of bytes actually transfered. */
852	uint32_t cbXfered;
853	/** Blows up the request to the required size. */
854	uint8_t abPad[28];
855	} KDPACKETMANIPULATE_CONTEXTEX;
856	AssertCompileSize(KDPACKETMANIPULATE_CONTEXTEX, 40);
857	/** Pointer to a context extended manipulate payload. */
858	typedef KDPACKETMANIPULATE_CONTEXTEX *PKDPACKETMANIPULATE_CONTEXTEX;
859	/** Pointer to a const context extended manipulate payload. */
860	typedef const KDPACKETMANIPULATE_CONTEXTEX *PCKDPACKETMANIPULATE_CONTEXTEX;
861
862
863	/**
864	* Continue manipulate payload.
865	*/
866	typedef struct KDPACKETMANIPULATE_CONTINUE
867	{
868	/** Continue (status?). */
869	uint32_t u32NtContSts;
870	/** Blows up the request to the required size. */
871	uint8_t abPad[36];
872	} KDPACKETMANIPULATE_CONTINUE;
873	AssertCompileSize(KDPACKETMANIPULATE_CONTINUE, 40);
874	/** Pointer to a continue manipulate payload. */
875	typedef KDPACKETMANIPULATE_CONTINUE *PKDPACKETMANIPULATE_CONTINUE;
876	/** Pointer to a const continue manipulate payload. */
877	typedef const KDPACKETMANIPULATE_CONTINUE *PCKDPACKETMANIPULATE_CONTINUE;
878
879
880	/**
881	* Continue 2 manipulate payload.
882	*/
883	typedef struct KDPACKETMANIPULATE_CONTINUE2
884	{
885	/** Continue (status?). */
886	uint32_t u32NtContSts;
887	/** Trace flag. */
888	uint32_t fTrace;
889	/** Bitsize dependent data. */
890	union
891	{
892	/** 32bit. */
893	struct
894	{
895	/** DR7 value to continue with. */
896	uint32_t u32RegDr7;
897	/** @todo (?) */
898	uint32_t u32SymCurStart;
899	uint32_t u32SymCurEnd;
900	} x86;
901	/** 64bit. */
902	struct
903	{
904	/** DR7 value to continue with. */
905	uint64_t u64RegDr7;
906	/** @todo (?) */
907	uint64_t u64SymCurStart;
908	uint64_t u64SymCurEnd;
909	} amd64;
910	} u;
911	/** Blows up the request to the required size. */
912	uint8_t abPad[8];
913	} KDPACKETMANIPULATE_CONTINUE2;
914	AssertCompileSize(KDPACKETMANIPULATE_CONTINUE2, 40);
915	/** Pointer to a continue 2 manipulate payload. */
916	typedef KDPACKETMANIPULATE_CONTINUE2 *PKDPACKETMANIPULATE_CONTINUE2;
917	/** Pointer to a const continue 2 manipulate payload. */
918	typedef const KDPACKETMANIPULATE_CONTINUE2 *PCKDPACKETMANIPULATE_CONTINUE2;
919
920
921	/**
922	* Set context manipulate payload.
923	*/
924	typedef struct KDPACKETMANIPULATE_SETCONTEXT
925	{
926	/** Continue (status?). */
927	uint32_t u32CtxFlags;
928	/** Blows up the request to the required size. */
929	uint8_t abPad[36];
930	} KDPACKETMANIPULATE_SETCONTEXT;
931	AssertCompileSize(KDPACKETMANIPULATE_SETCONTEXT, 40);
932	/** Pointer to a set context manipulate payload. */
933	typedef KDPACKETMANIPULATE_SETCONTEXT *PKDPACKETMANIPULATE_SETCONTEXT;
934	/** Pointer to a const set context manipulate payload. */
935	typedef const KDPACKETMANIPULATE_SETCONTEXT *PCKDPACKETMANIPULATE_SETCONTEXT;
936
937
938	/**
939	* Query memory properties payload.
940	*/
941	typedef struct KDPACKETMANIPULATE_QUERYMEMORY
942	{
943	/** The address to query the properties for. */
944	uint64_t u64GCPtr;
945	/** Reserved. */
946	uint64_t u64Rsvd;
947	/** Address space type on return. */
948	uint32_t u32AddrSpace;
949	/** Protection flags. */
950	uint32_t u32Flags;
951	/** Blows up the request to the required size. */
952	uint8_t abPad[16];
953	} KDPACKETMANIPULATE_QUERYMEMORY;
954	AssertCompileSize(KDPACKETMANIPULATE_QUERYMEMORY, 40);
955	/** Pointer to a query memory properties payload. */
956	typedef KDPACKETMANIPULATE_QUERYMEMORY *PKDPACKETMANIPULATE_QUERYMEMORY;
957	/** Pointer to a const query memory properties payload. */
958	typedef const KDPACKETMANIPULATE_QUERYMEMORY *PCKDPACKETMANIPULATE_QUERYMEMORY;
959
960
961	/** @name Query memory address space identifiers.
962	* @{ */
963	/** Process memory space. */
964	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_SPACE_PROCESS UINT32_C(0)
965	/** Session memory space. */
966	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_SPACE_SESSION UINT32_C(1)
967	/** Kernel memory space. */
968	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_SPACE_KERNEL UINT32_C(2)
969	/** @} */
970
971
972	/** @name Query memory address protection flags.
973	* @{ */
974	/** Readable. */
975	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_READ RT_BIT_32(0)
976	/** Writable. */
977	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_WRITE RT_BIT_32(1)
978	/** Executable. */
979	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_EXEC RT_BIT_32(2)
980	/** Fixed address. */
981	#define KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_FIXED RT_BIT_32(3)
982	/** @} */
983
984
985	/**
986	* Search memory payload.
987	*/
988	typedef struct KDPACKETMANIPULATE_SEARCHMEMORY
989	{
990	/** The address to start searching at on input, found address on output. */
991	uint64_t u64GCPtr;
992	/** Number of bytes to search. */
993	uint64_t cbSearch;
994	/** Length of the pattern to search for following the payload. */
995	uint32_t cbPattern;
996	/** Padding to the required size. */
997	uint32_t au32Pad[5];
998	} KDPACKETMANIPULATE_SEARCHMEMORY;
999	AssertCompileSize(KDPACKETMANIPULATE_SEARCHMEMORY, 40);
1000	/** Pointer to a search memory properties payload. */
1001	typedef KDPACKETMANIPULATE_SEARCHMEMORY *PKDPACKETMANIPULATE_SEARCHMEMORY;
1002	/** Pointer to a const search memory properties payload. */
1003	typedef const KDPACKETMANIPULATE_SEARCHMEMORY *PCKDPACKETMANIPULATE_SEARCHMEMORY;
1004
1005
1006	/**
1007	* Manipulate request packet header (Same for 32bit and 64bit).
1008	*/
1009	typedef struct KDPACKETMANIPULATEHDR
1010	{
1011	/** The request to execute. */
1012	uint32_t idReq;
1013	/** The processor level to execute the request on. */
1014	uint16_t u16CpuLvl;
1015	/** The processor ID to execute the request on. */
1016	uint16_t idCpu;
1017	/** Return status code. */
1018	uint32_t u32NtStatus;
1019	/** Alignment. */
1020	uint32_t u32Alignment;
1021	} KDPACKETMANIPULATEHDR;
1022	AssertCompileSize(KDPACKETMANIPULATEHDR, 3 * 4 + 2 * 2);
1023	/** Pointer to a manipulate request packet header. */
1024	typedef KDPACKETMANIPULATEHDR *PKDPACKETMANIPULATEHDR;
1025	/** Pointer to a const manipulate request packet header. */
1026	typedef const KDPACKETMANIPULATEHDR *PCPKDPACKETMANIPULATEHDR;
1027
1028
1029	/**
1030	* 64bit manipulate state request packet.
1031	*/
1032	typedef struct KDPACKETMANIPULATE64
1033	{
1034	/** Header. */
1035	KDPACKETMANIPULATEHDR Hdr;
1036	/** Request payloads. */
1037	union
1038	{
1039	/** Get Version. */
1040	KDPACKETMANIPULATE_GETVERSION64 GetVersion;
1041	/** Read/Write memory. */
1042	KDPACKETMANIPULATE_XFERMEM64 XferMem;
1043	/** Continue. */
1044	KDPACKETMANIPULATE_CONTINUE Continue;
1045	/** Continue2. */
1046	KDPACKETMANIPULATE_CONTINUE2 Continue2;
1047	/** Set context. */
1048	KDPACKETMANIPULATE_SETCONTEXT SetContext;
1049	/** Read/Write control space. */
1050	KDPACKETMANIPULATE_XFERCTRLSPACE64 XferCtrlSpace;
1051	/** Restore breakpoint. */
1052	KDPACKETMANIPULATE_RESTOREBKPT64 RestoreBkpt;
1053	/** Write breakpoint. */
1054	KDPACKETMANIPULATE_WRITEBKPT64 WriteBkpt;
1055	/** Context extended. */
1056	KDPACKETMANIPULATE_CONTEXTEX ContextEx;
1057	/** Query memory. */
1058	KDPACKETMANIPULATE_QUERYMEMORY QueryMemory;
1059	/** Search memory. */
1060	KDPACKETMANIPULATE_SEARCHMEMORY SearchMemory;
1061	} u;
1062	} KDPACKETMANIPULATE64;
1063	AssertCompileSize(KDPACKETMANIPULATE64, 16 + 40);
1064	/** Pointer to a 64bit manipulate state request packet. */
1065	typedef KDPACKETMANIPULATE64 *PKDPACKETMANIPULATE64;
1066	/** Pointer to a const 64bit manipulate state request packet. */
1067	typedef const KDPACKETMANIPULATE64 *PCKDPACKETMANIPULATE64;
1068
1069	/** @name Manipulate requests.
1070	* @{ */
1071	/** Minimum available request. */
1072	#define KD_PACKET_MANIPULATE_REQ_MIN UINT32_C(0x00003130)
1073	/** Read virtual memory request. */
1074	#define KD_PACKET_MANIPULATE_REQ_READ_VIRT_MEM KD_PACKET_MANIPULATE_REQ_MIN
1075	/** Write virtual memory request. */
1076	#define KD_PACKET_MANIPULATE_REQ_WRITE_VIRT_MEM UINT32_C(0x00003131)
1077	/** Get context request. */
1078	#define KD_PACKET_MANIPULATE_REQ_GET_CONTEXT UINT32_C(0x00003132)
1079	/** Set context request. */
1080	#define KD_PACKET_MANIPULATE_REQ_SET_CONTEXT UINT32_C(0x00003133)
1081	/** Write breakpoint request. */
1082	#define KD_PACKET_MANIPULATE_REQ_WRITE_BKPT UINT32_C(0x00003134)
1083	/** Restore breakpoint request. */
1084	#define KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT UINT32_C(0x00003135)
1085	/** Continue request. */
1086	#define KD_PACKET_MANIPULATE_REQ_CONTINUE UINT32_C(0x00003136)
1087	/** Read control space request. */
1088	#define KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE UINT32_C(0x00003137)
1089	/** Write control space request. */
1090	#define KD_PACKET_MANIPULATE_REQ_WRITE_CTRL_SPACE UINT32_C(0x00003138)
1091	/** Read I/O space request. */
1092	#define KD_PACKET_MANIPULATE_REQ_READ_IO_SPACE UINT32_C(0x00003139)
1093	/** Write I/O space request. */
1094	#define KD_PACKET_MANIPULATE_REQ_WRITE_IO_SPACE UINT32_C(0x0000313a)
1095	/** Reboot request. */
1096	#define KD_PACKET_MANIPULATE_REQ_REBOOT UINT32_C(0x0000313b)
1097	/** continue 2nd version request. */
1098	#define KD_PACKET_MANIPULATE_REQ_CONTINUE2 UINT32_C(0x0000313c)
1099	/** Read physical memory request. */
1100	#define KD_PACKET_MANIPULATE_REQ_READ_PHYS_MEM UINT32_C(0x0000313d)
1101	/** Write physical memory request. */
1102	#define KD_PACKET_MANIPULATE_REQ_WRITE_PHYS_MEM UINT32_C(0x0000313e)
1103	/** Query special calls request. */
1104	#define KD_PACKET_MANIPULATE_REQ_QUERY_SPEC_CALLS UINT32_C(0x0000313f)
1105	/** Set special calls request. */
1106	#define KD_PACKET_MANIPULATE_REQ_SET_SPEC_CALLS UINT32_C(0x00003140)
1107	/** Clear special calls request. */
1108	#define KD_PACKET_MANIPULATE_REQ_CLEAR_SPEC_CALLS UINT32_C(0x00003141)
1109	/** Set internal breakpoint request. */
1110	#define KD_PACKET_MANIPULATE_REQ_SET_INTERNAL_BKPT UINT32_C(0x00003142)
1111	/** Get internal breakpoint request. */
1112	#define KD_PACKET_MANIPULATE_REQ_GET_INTERNAL_BKPT UINT32_C(0x00003143)
1113	/** Read I/O space extended request. */
1114	#define KD_PACKET_MANIPULATE_REQ_READ_IO_SPACE_EX UINT32_C(0x00003144)
1115	/** Write I/O space extended request. */
1116	#define KD_PACKET_MANIPULATE_REQ_WRITE_IO_SPACE_EX UINT32_C(0x00003145)
1117	/** Get version request. */
1118	#define KD_PACKET_MANIPULATE_REQ_GET_VERSION UINT32_C(0x00003146)
1119	/** Write breakpoint extended request. */
1120	#define KD_PACKET_MANIPULATE_REQ_WRITE_BKPT_EX UINT32_C(0x00003147)
1121	/** Restore breakpoint extended request. */
1122	#define KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT_EX UINT32_C(0x00003148)
1123	/** Cause a bugcheck request. */
1124	#define KD_PACKET_MANIPULATE_REQ_CAUSE_BUGCHECK UINT32_C(0x00003149)
1125	/** Cause a bugcheck request. */
1126	#define KD_PACKET_MANIPULATE_REQ_SWITCH_PROCESSOR UINT32_C(0x00003150)
1127	/** @todo 0x3151-0x3155 */
1128	/** Search memory for a pattern request. */
1129	#define KD_PACKET_MANIPULATE_REQ_SEARCH_MEMORY UINT32_C(0x00003156)
1130	/** @todo 0x3157-0x3159 */
1131	/** Clear all internal breakpoints request. */
1132	#define KD_PACKET_MANIPULATE_REQ_CLEAR_ALL_INTERNAL_BKPT UINT32_C(0x0000315a)
1133	/** Fill memory. */
1134	#define KD_PACKET_MANIPULATE_REQ_FILL_MEMORY UINT32_C(0x0000315b)
1135	/** Query memory properties. */
1136	#define KD_PACKET_MANIPULATE_REQ_QUERY_MEMORY UINT32_C(0x0000315c)
1137	/** @todo 0x315d, 0x315e */
1138	/** Get context extended request. */
1139	#define KD_PACKET_MANIPULATE_REQ_GET_CONTEXT_EX UINT32_C(0x0000315f)
1140	/** @todo 0x3160 */
1141	/** Maximum available request (exclusive). */
1142	#define KD_PACKET_MANIPULATE_REQ_MAX UINT32_C(0x00003161)
1143	/** @} */
1144
1145	/**
1146	* KD stub receive state.
1147	*/
1148	typedef enum KDRECVSTATE
1149	{
1150	/** Invalid state. */
1151	KDRECVSTATE_INVALID = 0,
1152	/** Receiving the first byte of the packet header. */
1153	KDRECVSTATE_PACKET_HDR_FIRST_BYTE,
1154	/** Receiving the second byte of the packet header. */
1155	KDRECVSTATE_PACKET_HDR_SECOND_BYTE,
1156	/** Receiving the header. */
1157	KDRECVSTATE_PACKET_HDR,
1158	/** Receiving the packet body. */
1159	KDRECVSTATE_PACKET_BODY,
1160	/** Receiving the trailing byte. */
1161	KDRECVSTATE_PACKET_TRAILER,
1162	/** Blow up the enum to 32bits for easier alignment of members in structs. */
1163	KDRECVSTATE_32BIT_HACK = 0x7fffffff
1164	} KDRECVSTATE;
1165
1166
1167	/**
1168	* KD emulated hardware breakpoint.
1169	*/
1170	typedef struct KDCTXHWBP
1171	{
1172	/** The DBGF breakpoint handle if active, NIL_DBGFBP if not active. */
1173	DBGFBP hDbgfBp;
1174	/** The linear address of the breakpoint if active. */
1175	RTGCPTR GCPtrBp;
1176	/** Access type of the breakpoint, see X86_DR7_RW_. /
1177	uint8_t fAcc;
1178	/** Length flags of the breakpoint. */
1179	uint8_t fLen;
1180	/** Flag whether it is a local breakpoint. */
1181	bool fLocal;
1182	/** Flag whether it is a global breakpoint. */
1183	bool fGlobal;
1184	/** Flag whether the breakpoint has triggered since the last time of the reset. */
1185	bool fTriggered;
1186	} KDCTXHWBP;
1187	/** Pointer to an emulated hardware breakpoint. */
1188	typedef KDCTXHWBP *PKDCTXHWBP;
1189	/** Pointer to a const emulated hardware breakpoint. */
1190	typedef const KDCTXHWBP *PCKDCTXHWBP;
1191
1192
1193	/**
1194	* KD context data.
1195	*/
1196	typedef struct KDCTX
1197	{
1198	/** Internal debugger console data. */
1199	DBGC Dbgc;
1200	/** Number of bytes received left for the current state. */
1201	size_t cbRecvLeft;
1202	/** Pointer where to write the next received data. */
1203	uint8_t *pbRecv;
1204	/** The current state when receiving a new packet. */
1205	KDRECVSTATE enmState;
1206	/** The timeout waiting for new data. */
1207	RTMSINTERVAL msRecvTimeout;
1208	/** Timestamp when we last received data from the remote end. */
1209	uint64_t tsRecvLast;
1210	/** Packet header being received. */
1211	union
1212	{
1213	KDPACKETHDR Fields;
1214	uint8_t ab[16];
1215	} PktHdr;
1216	/** The next packet ID to send. */
1217	uint32_t idPktNext;
1218	/** Offset into the body receive buffer. */
1219	size_t offBodyRecv;
1220	/** Body data. */
1221	uint8_t abBody[_4K];
1222	/** The trailer byte storage. */
1223	uint8_t bTrailer;
1224	/** Flag whether a breakin packet was received since the last time it was reset. */
1225	bool fBreakinRecv;
1226	/** Flag whether we entered the native VBox hypervisor through a bugcheck request. */
1227	bool fInVBoxDbg;
1228
1229	/** Emulated hardware breakpoint handling. */
1230	KDCTXHWBP aHwBp[4];
1231	/** Flag whether a single step completed since last time this was cleared. */
1232	bool fSingleStepped;
1233
1234	/** Pointer to the OS digger WinNt interface if a matching guest was detected. */
1235	PDBGFOSIWINNT pIfWinNt;
1236	/** Flag whether the detected guest is 32bit (false if 64bit). */
1237	bool f32Bit;
1238	} KDCTX;
1239	/** Pointer to the KD context data. */
1240	typedef KDCTX *PKDCTX;
1241	/** Pointer to const KD context data. */
1242	typedef const KDCTX *PCKDCTX;
1243	/** Pointer to a KD context data pointer. */
1244	typedef PKDCTX *PPKDCTX;
1245
1246
1247	/**
1248	* Register mapping descriptor.
1249	*/
1250	typedef struct KDREGDESC
1251	{
1252	/** The DBGF register enum. */
1253	DBGFREG enmReg;
1254	/** Register width. */
1255	DBGFREGVALTYPE enmValType;
1256	/** The offset into the context structure where the value ends up. */
1257	uintptr_t offReg;
1258	} KDREGDESC;
1259	/** Pointer to a register mapping structure. */
1260	typedef KDREGDESC *PKDREGDESC;
1261	/** Pointer to a const register mapping structure. */
1262	typedef const KDREGDESC *PCKDREGDESC;
1263
1264
1265	/** Creates a possibly sign extended guest context pointer which is required for 32bit targets. */
1266	#define KD_PTR_CREATE(a_pThis, a_GCPtr) ((a_pThis)->f32Bit && ((a_GCPtr) & RT_BIT_32(31)) ? (a_GCPtr) \| UINT64_C(0xffffffff00000000) : (a_GCPtr))
1267	/** Returns the value of a possibly sign extended guest context pointer received for 32bit targets. */
1268	#define KD_PTR_GET(a_pThis, a_GCPtr) ((a_pThis)->f32Bit ? (a_GCPtr) & ~UINT64_C(0xffffffff00000000) : (a_GCPtr))
1269
1270
1271	/*********************************************************************************************************************************
1272	* Global Variables *
1273	*********************************************************************************************************************************/
1274
1275	/** 64bit control register set. */
1276	static const KDREGDESC g_aRegsCtrl64[] =
1277	{
1278	{ DBGFREG_CS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegCs) },
1279	{ DBGFREG_SS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegSs) },
1280	{ DBGFREG_RIP, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRip) },
1281	{ DBGFREG_RSP, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRsp) },
1282	{ DBGFREG_RBP, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRbp) },
1283	{ DBGFREG_EFLAGS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT64, u32RegEflags) }
1284	};
1285
1286
1287	/** 64bit integer register set. */
1288	static const KDREGDESC g_aRegsInt64[] =
1289	{
1290	{ DBGFREG_RAX, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRax) },
1291	{ DBGFREG_RCX, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRcx) },
1292	{ DBGFREG_RDX, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRdx) },
1293	{ DBGFREG_RBX, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRbx) },
1294	{ DBGFREG_RSI, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRsi) },
1295	{ DBGFREG_RDI, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegRdi) },
1296	{ DBGFREG_R8, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR8) },
1297	{ DBGFREG_R9, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR9) },
1298	{ DBGFREG_R10, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR10) },
1299	{ DBGFREG_R11, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR11) },
1300	{ DBGFREG_R12, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR12) },
1301	{ DBGFREG_R13, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR13) },
1302	{ DBGFREG_R14, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR14) },
1303	{ DBGFREG_R15, DBGFREGVALTYPE_U64, RT_UOFFSETOF(NTCONTEXT64, u64RegR15) }
1304	};
1305
1306
1307	/** 64bit segments register set. */
1308	static const KDREGDESC g_aRegsSegs64[] =
1309	{
1310	{ DBGFREG_DS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegDs) },
1311	{ DBGFREG_ES, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegEs) },
1312	{ DBGFREG_FS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegFs) },
1313	{ DBGFREG_GS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, u16SegGs) }
1314	};
1315
1316
1317	/** 64bit floating point register set. */
1318	static const KDREGDESC g_aRegsFx64[] =
1319	{
1320	{ DBGFREG_FCW, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.FCW) },
1321	{ DBGFREG_FSW, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.FSW) },
1322	{ DBGFREG_FTW, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.FTW) },
1323	{ DBGFREG_FOP, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.FOP) },
1324	{ DBGFREG_FPUIP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT64, FxSave.FPUIP) },
1325	/// @todo Fails on Solaris { DBGFREG_FPUCS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.CS) },
1326	{ DBGFREG_FPUDP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT64, FxSave.FPUDP) },
1327	/// @todo Fails on Solaris { DBGFREG_FPUDS, DBGFREGVALTYPE_U16, RT_UOFFSETOF(NTCONTEXT64, FxSave.DS) },
1328	{ DBGFREG_MXCSR, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT64, FxSave.MXCSR) },
1329	{ DBGFREG_MXCSR_MASK, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT64, FxSave.MXCSR_MASK) },
1330	{ DBGFREG_ST0, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[0]) },
1331	{ DBGFREG_ST1, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[1]) },
1332	{ DBGFREG_ST2, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[2]) },
1333	{ DBGFREG_ST3, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[3]) },
1334	{ DBGFREG_ST4, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[4]) },
1335	{ DBGFREG_ST5, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[5]) },
1336	{ DBGFREG_ST6, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[6]) },
1337	{ DBGFREG_ST7, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT64, FxSave.aRegs[7]) },
1338	{ DBGFREG_XMM0, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[0]) },
1339	{ DBGFREG_XMM1, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[1]) },
1340	{ DBGFREG_XMM2, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[2]) },
1341	{ DBGFREG_XMM3, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[3]) },
1342	{ DBGFREG_XMM4, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[4]) },
1343	{ DBGFREG_XMM5, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[5]) },
1344	{ DBGFREG_XMM6, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[6]) },
1345	{ DBGFREG_XMM7, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[7]) },
1346	{ DBGFREG_XMM8, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[8]) },
1347	{ DBGFREG_XMM9, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[9]) },
1348	{ DBGFREG_XMM10, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[10]) },
1349	{ DBGFREG_XMM11, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[11]) },
1350	{ DBGFREG_XMM12, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[12]) },
1351	{ DBGFREG_XMM13, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[13]) },
1352	{ DBGFREG_XMM14, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[14]) },
1353	{ DBGFREG_XMM15, DBGFREGVALTYPE_U128, RT_UOFFSETOF(NTCONTEXT64, FxSave.aXMM[15]) }
1354	};
1355
1356
1357	/** 32bit control register set. */
1358	static const KDREGDESC g_aRegsCtrl32[] =
1359	{
1360	{ DBGFREG_CS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegCs) },
1361	{ DBGFREG_SS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegSs) },
1362	{ DBGFREG_EIP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEip) },
1363	{ DBGFREG_ESP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEsp) },
1364	{ DBGFREG_EBP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEbp) },
1365	{ DBGFREG_EFLAGS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEflags) }
1366	};
1367
1368
1369	/** 32bit integer register set. */
1370	static const KDREGDESC g_aRegsInt32[] =
1371	{
1372	{ DBGFREG_EAX, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEax) },
1373	{ DBGFREG_ECX, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEcx) },
1374	{ DBGFREG_EDX, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEdx) },
1375	{ DBGFREG_EBX, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEbx) },
1376	{ DBGFREG_ESI, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEsi) },
1377	{ DBGFREG_EDI, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegEdi) }
1378	};
1379
1380
1381	/** 32bit segments register set. */
1382	static const KDREGDESC g_aRegsSegs32[] =
1383	{
1384	{ DBGFREG_DS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegDs) },
1385	{ DBGFREG_ES, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegEs) },
1386	{ DBGFREG_FS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegFs) },
1387	{ DBGFREG_GS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32SegGs) }
1388	};
1389
1390
1391	/** 32bit debug register set. */
1392	static const KDREGDESC g_aRegsDbg32[] =
1393	{
1394	{ DBGFREG_DR0, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr0) },
1395	{ DBGFREG_DR1, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr1) },
1396	{ DBGFREG_DR2, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr2) },
1397	{ DBGFREG_DR3, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr3) },
1398	{ DBGFREG_DR6, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr6) },
1399	{ DBGFREG_DR7, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, u32RegDr7) }
1400	};
1401
1402
1403	/** 32bit floating point register set. */
1404	static const KDREGDESC g_aRegsFx32[] =
1405	{
1406	{ DBGFREG_FCW, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32CtrlWord) },
1407	{ DBGFREG_FSW, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32StatusWord)},
1408	{ DBGFREG_FTW, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32TagWord) },
1409	{ DBGFREG_FCW, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32CtrlWord) },
1410	{ DBGFREG_FPUIP, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32ErrorOff) },
1411	{ DBGFREG_FPUCS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32ErrorSel) },
1412	{ DBGFREG_FPUDS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32DataOff) },
1413	{ DBGFREG_FPUDS, DBGFREGVALTYPE_U32, RT_UOFFSETOF(NTCONTEXT32, FloatSave.u32DataSel) },
1414	{ DBGFREG_ST0, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[0]) },
1415	{ DBGFREG_ST1, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[1]) },
1416	{ DBGFREG_ST2, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[2]) },
1417	{ DBGFREG_ST3, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[3]) },
1418	{ DBGFREG_ST4, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[4]) },
1419	{ DBGFREG_ST5, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[5]) },
1420	{ DBGFREG_ST6, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[6]) },
1421	{ DBGFREG_ST7, DBGFREGVALTYPE_R80, RT_UOFFSETOF(NTCONTEXT32, FloatSave.aFpuRegs[7]) }
1422	};
1423
1424
1425	/*********************************************************************************************************************************
1426	* Internal Functions *
1427	*********************************************************************************************************************************/
1428	static void dbgcKdCtxMsgSend(PKDCTX pThis, bool fWarning, const char *pszMsg);
1429
1430
1431	#ifdef LOG_ENABLED
1432	/**
1433	* Returns a human readable string of the given packet sub type.
1434	*
1435	* @returns Pointer to sub type string.
1436	* @param u16SubType The sub type to convert to a string.
1437	*/
1438	static const char *dbgcKdPktDumpSubTypeToStr(uint16_t u16SubType)
1439	{
1440	switch (u16SubType)
1441	{
1442	case KD_PACKET_HDR_SUB_TYPE_STATE_CHANGE32: return "StateChange32";
1443	case KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE: return "Manipulate";
1444	case KD_PACKET_HDR_SUB_TYPE_DEBUG_IO: return "DebugIo";
1445	case KD_PACKET_HDR_SUB_TYPE_ACKNOWLEDGE: return "Ack";
1446	case KD_PACKET_HDR_SUB_TYPE_RESEND: return "Resend";
1447	case KD_PACKET_HDR_SUB_TYPE_RESET: return "Reset";
1448	case KD_PACKET_HDR_SUB_TYPE_STATE_CHANGE64: return "StateChange64";
1449	case KD_PACKET_HDR_SUB_TYPE_POLL_BREAKIN: return "PollBreakin";
1450	case KD_PACKET_HDR_SUB_TYPE_TRACE_IO: return "TraceIo";
1451	case KD_PACKET_HDR_SUB_TYPE_CONTROL_REQUEST: return "ControlRequest";
1452	case KD_PACKET_HDR_SUB_TYPE_FILE_IO: return "FileIo";
1453	default: break;
1454	}
1455
1456	return "<UNKNOWN>";
1457	}
1458
1459
1460	/**
1461	* Returns a human readable string of the given manipulate request ID.
1462	*
1463	* @returns Human readable string (read only).
1464	* @param idReq Request ID (API number in KD speak).
1465	*/
1466	static const char *dbgcKdPktDumpManipulateReqToStr(uint32_t idReq)
1467	{
1468	switch (idReq)
1469	{
1470	case KD_PACKET_MANIPULATE_REQ_READ_VIRT_MEM: return "ReadVirtMem";
1471	case KD_PACKET_MANIPULATE_REQ_WRITE_VIRT_MEM: return "WriteVirtMem";
1472	case KD_PACKET_MANIPULATE_REQ_GET_CONTEXT: return "GetContext";
1473	case KD_PACKET_MANIPULATE_REQ_SET_CONTEXT: return "SetContext";
1474	case KD_PACKET_MANIPULATE_REQ_WRITE_BKPT: return "WriteBkpt";
1475	case KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT: return "RestoreBkpt";
1476	case KD_PACKET_MANIPULATE_REQ_CONTINUE: return "Continue";
1477	case KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE: return "ReadCtrlSpace";
1478	case KD_PACKET_MANIPULATE_REQ_WRITE_CTRL_SPACE: return "WriteCtrlSpace";
1479	case KD_PACKET_MANIPULATE_REQ_READ_IO_SPACE: return "ReadIoSpace";
1480	case KD_PACKET_MANIPULATE_REQ_WRITE_IO_SPACE: return "WriteIoSpace";
1481	case KD_PACKET_MANIPULATE_REQ_REBOOT: return "Reboot";
1482	case KD_PACKET_MANIPULATE_REQ_CONTINUE2: return "Continue2";
1483	case KD_PACKET_MANIPULATE_REQ_READ_PHYS_MEM: return "ReadPhysMem";
1484	case KD_PACKET_MANIPULATE_REQ_WRITE_PHYS_MEM: return "WritePhysMem";
1485	case KD_PACKET_MANIPULATE_REQ_QUERY_SPEC_CALLS: return "QuerySpecCalls";
1486	case KD_PACKET_MANIPULATE_REQ_SET_SPEC_CALLS: return "SetSpecCalls";
1487	case KD_PACKET_MANIPULATE_REQ_CLEAR_SPEC_CALLS: return "ClrSpecCalls";
1488	case KD_PACKET_MANIPULATE_REQ_SET_INTERNAL_BKPT: return "SetIntBkpt";
1489	case KD_PACKET_MANIPULATE_REQ_GET_INTERNAL_BKPT: return "GetIntBkpt";
1490	case KD_PACKET_MANIPULATE_REQ_READ_IO_SPACE_EX: return "ReadIoSpaceEx";
1491	case KD_PACKET_MANIPULATE_REQ_WRITE_IO_SPACE_EX: return "WriteIoSpaceEx";
1492	case KD_PACKET_MANIPULATE_REQ_GET_VERSION: return "GetVersion";
1493	case KD_PACKET_MANIPULATE_REQ_CLEAR_ALL_INTERNAL_BKPT: return "ClrAllIntBkpt";
1494	case KD_PACKET_MANIPULATE_REQ_GET_CONTEXT_EX: return "GetContextEx";
1495	case KD_PACKET_MANIPULATE_REQ_QUERY_MEMORY: return "QueryMemory";
1496	case KD_PACKET_MANIPULATE_REQ_CAUSE_BUGCHECK: return "CauseBugCheck";
1497	case KD_PACKET_MANIPULATE_REQ_SWITCH_PROCESSOR: return "SwitchProcessor";
1498	case KD_PACKET_MANIPULATE_REQ_SEARCH_MEMORY: return "SearchMemory";
1499	default: break;
1500	}
1501
1502	return "<UNKNOWN>";
1503	}
1504
1505
1506	/**
1507	* Dumps the content of a manipulate packet.
1508	*
1509	* @param pSgBuf S/G buffer containing the manipulate packet payload.
1510	*/
1511	static void dbgcKdPktDumpManipulate(PRTSGBUF pSgBuf)
1512	{
1513	KDPACKETMANIPULATEHDR Hdr;
1514	size_t cbCopied = RTSgBufCopyToBuf(pSgBuf, &Hdr, sizeof(Hdr));
1515
1516	if (cbCopied == sizeof(Hdr))
1517	{
1518	const char *pszReq = dbgcKdPktDumpManipulateReqToStr(Hdr.idReq);
1519
1520	Log3((" MANIPULATE(%#x (%s), %#x, %u, %#x)\n",
1521	Hdr.idReq, pszReq, Hdr.u16CpuLvl, Hdr.idCpu, Hdr.u32NtStatus));
1522
1523	switch (Hdr.idReq)
1524	{
1525	case KD_PACKET_MANIPULATE_REQ_READ_VIRT_MEM:
1526	case KD_PACKET_MANIPULATE_REQ_WRITE_VIRT_MEM:
1527	case KD_PACKET_MANIPULATE_REQ_READ_PHYS_MEM:
1528	case KD_PACKET_MANIPULATE_REQ_WRITE_PHYS_MEM:
1529	{
1530	KDPACKETMANIPULATE_XFERMEM64 XferMem64;
1531	cbCopied = RTSgBufCopyToBuf(pSgBuf, &XferMem64, sizeof(XferMem64));
1532	if (cbCopied == sizeof(XferMem64))
1533	{
1534	Log3((" u64PtrTarget: %RX64\n"
1535	" cbXferReq: %RX32\n"
1536	" cbXfered: %RX32\n",
1537	XferMem64.u64PtrTarget, XferMem64.cbXferReq, XferMem64.cbXfered));
1538	}
1539	else
1540	Log3((" Payload to small, expected %u, got %zu\n", sizeof(XferMem64), cbCopied));
1541	break;
1542	}
1543	case KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT:
1544	{
1545	KDPACKETMANIPULATE_RESTOREBKPT64 RestoreBkpt64;
1546	cbCopied = RTSgBufCopyToBuf(pSgBuf, &RestoreBkpt64, sizeof(RestoreBkpt64));
1547	if (cbCopied == sizeof(RestoreBkpt64))
1548	Log3((" u32HndBkpt: %RX32\n", RestoreBkpt64.u32HndBkpt));
1549	else
1550	Log3((" Payload to small, expected %u, got %zu\n", sizeof(RestoreBkpt64), cbCopied));
1551	break;
1552	}
1553	case KD_PACKET_MANIPULATE_REQ_WRITE_BKPT:
1554	{
1555	KDPACKETMANIPULATE_WRITEBKPT64 WriteBkpt64;
1556	cbCopied = RTSgBufCopyToBuf(pSgBuf, &WriteBkpt64, sizeof(WriteBkpt64));
1557	if (cbCopied == sizeof(WriteBkpt64))
1558	Log3((" u64PtrBkpt: %RX64\n"
1559	" u32HndBkpt: %RX32\n",
1560	WriteBkpt64.u64PtrBkpt, WriteBkpt64.u32HndBkpt));
1561	else
1562	Log3((" Payload to small, expected %u, got %zu\n", sizeof(WriteBkpt64), cbCopied));
1563	break;
1564	}
1565	case KD_PACKET_MANIPULATE_REQ_CONTINUE:
1566	{
1567	KDPACKETMANIPULATE_CONTINUE Continue;
1568	cbCopied = RTSgBufCopyToBuf(pSgBuf, &Continue, sizeof(Continue));
1569	if (cbCopied == sizeof(Continue))
1570	Log3((" u32NtContSts: %RX32\n", Continue.u32NtContSts));
1571	else
1572	Log3((" Payload to small, expected %u, got %zu\n", sizeof(Continue), cbCopied));
1573	break;
1574	}
1575	case KD_PACKET_MANIPULATE_REQ_CONTINUE2:
1576	{
1577	KDPACKETMANIPULATE_CONTINUE2 Continue;
1578	cbCopied = RTSgBufCopyToBuf(pSgBuf, &Continue, sizeof(Continue));
1579	if (cbCopied == sizeof(Continue))
1580	Log3((" u32NtContSts: %RX32\n"
1581	" fTrace: %RX32\n",
1582	Continue.u32NtContSts, Continue.fTrace));
1583	else
1584	Log3((" Payload to small, expected %u, got %zu\n", sizeof(Continue), cbCopied));
1585	break;
1586	}
1587	case KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE:
1588	case KD_PACKET_MANIPULATE_REQ_WRITE_CTRL_SPACE:
1589	{
1590	KDPACKETMANIPULATE_XFERCTRLSPACE64 XferCtrlSpace64;
1591	cbCopied = RTSgBufCopyToBuf(pSgBuf, &XferCtrlSpace64, sizeof(XferCtrlSpace64));
1592	if (cbCopied == sizeof(XferCtrlSpace64))
1593	{
1594	Log3((" u64IdXfer: %RX64\n"
1595	" cbXferReq: %RX32\n"
1596	" cbXfered: %RX32\n",
1597	XferCtrlSpace64.u64IdXfer, XferCtrlSpace64.cbXferReq, XferCtrlSpace64.cbXfered));
1598	}
1599	else
1600	Log3((" Payload to small, expected %u, got %zu\n", sizeof(XferCtrlSpace64), cbCopied));
1601	break;
1602	}
1603	case KD_PACKET_MANIPULATE_REQ_GET_CONTEXT_EX:
1604	{
1605	KDPACKETMANIPULATE_CONTEXTEX GetContextEx;
1606	cbCopied = RTSgBufCopyToBuf(pSgBuf, &GetContextEx, sizeof(GetContextEx));
1607	if (cbCopied == sizeof(GetContextEx))
1608	{
1609	Log3((" offStart: %RX32\n"
1610	" cbXferReq: %RX32\n"
1611	" cbXfered: %RX32\n",
1612	GetContextEx.offStart, GetContextEx.cbXfer, GetContextEx.cbXfered));
1613	}
1614	else
1615	Log3((" Payload to small, expected %u, got %zu\n", sizeof(GetContextEx), cbCopied));
1616	break;
1617	}
1618	case KD_PACKET_MANIPULATE_REQ_QUERY_MEMORY:
1619	{
1620	KDPACKETMANIPULATE_QUERYMEMORY QueryMemory;
1621	cbCopied = RTSgBufCopyToBuf(pSgBuf, &QueryMemory, sizeof(QueryMemory));
1622	if (cbCopied == sizeof(QueryMemory))
1623	{
1624	Log3((" u64GCPtr: %RX64\n"
1625	" u32AddrSpace: %RX32\n"
1626	" u32Flags: %RX32\n",
1627	QueryMemory.u64GCPtr, QueryMemory.u32AddrSpace, QueryMemory.u32Flags));
1628	}
1629	else
1630	Log3((" Payload to small, expected %u, got %zu\n", sizeof(QueryMemory), cbCopied));
1631	break;
1632	}
1633	case KD_PACKET_MANIPULATE_REQ_SEARCH_MEMORY:
1634	{
1635	KDPACKETMANIPULATE_SEARCHMEMORY SearchMemory;
1636	cbCopied = RTSgBufCopyToBuf(pSgBuf, &SearchMemory, sizeof(SearchMemory));
1637	if (cbCopied == sizeof(SearchMemory))
1638	{
1639	Log3((" u64GCPtr: %RX64\n"
1640	" cbSearch: %RX64\n"
1641	" cbPattern: %RX32\n",
1642	SearchMemory.u64GCPtr, SearchMemory.cbSearch, SearchMemory.cbPattern));
1643	}
1644	else
1645	Log3((" Payload to small, expected %u, got %zu\n", sizeof(SearchMemory), cbCopied));
1646	break;
1647	}
1648	case KD_PACKET_MANIPULATE_REQ_SWITCH_PROCESSOR:
1649	default:
1650	break;
1651	}
1652	}
1653	else
1654	Log3((" MANIPULATE(Header too small, expected %u, got %zu)\n", sizeof(Hdr), cbCopied));
1655	}
1656
1657
1658	/**
1659	* Dumps the received packet to the debug log.
1660	*
1661	* @returns VBox status code.
1662	* @param pPktHdr The packet header to dump.
1663	* @param fRx Flag whether the packet was received (false indicates an outgoing packet).
1664	*/
1665	static void dbgcKdPktDump(PCKDPACKETHDR pPktHdr, PCRTSGSEG paSegs, uint32_t cSegs, bool fRx)
1666	{
1667	RTSGBUF SgBuf;
1668
1669	RTSgBufInit(&SgBuf, paSegs, cSegs);
1670
1671	Log3(("%s KDPKTHDR(%#x, %#x (%s), %u, %#x, %#x)\n",
1672	fRx ? "=>" : "<=",
1673	pPktHdr->u32Signature, pPktHdr->u16SubType, dbgcKdPktDumpSubTypeToStr(pPktHdr->u16SubType),
1674	pPktHdr->cbBody, pPktHdr->idPacket, pPktHdr->u32ChkSum));
1675	switch (pPktHdr->u16SubType)
1676	{
1677	case KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE:
1678	dbgcKdPktDumpManipulate(&SgBuf);
1679	break;
1680	default:
1681	break;
1682	}
1683	}
1684	#endif
1685
1686
1687	/**
1688	* Resets the emulated hardware breakpoint state to a state similar after a reboot.
1689	*
1690	* @param pThis The KD context.
1691	*/
1692	static void dbgcKdCtxHwBpReset(PKDCTX pThis)
1693	{
1694	pThis->fSingleStepped = false;
1695
1696	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aHwBp); i++)
1697	{
1698	PKDCTXHWBP pBp = &pThis->aHwBp[i];
1699
1700	if (pBp->hDbgfBp != NIL_DBGFBP)
1701	{
1702	int rc = DBGFR3BpClear(pThis->Dbgc.pUVM, pBp->hDbgfBp);
1703	AssertRC(rc);
1704	}
1705
1706	pBp->hDbgfBp = NIL_DBGFBP;
1707	pBp->GCPtrBp = 0;
1708	pBp->fAcc = 0;
1709	pBp->fLen = 0;
1710	pBp->fLocal = false;
1711	pBp->fGlobal = false;
1712	pBp->fTriggered = false;
1713	}
1714	}
1715
1716
1717	/**
1718	* Updates the given breakpoint with the given properties.
1719	*
1720	* @returns VBox status code.
1721	* @param pThis The KD context.
1722	* @param pBp The breakpoint to update.
1723	* @param fAcc Access mode.
1724	* @param fLen Access length.
1725	* @param fGlobal Global breakpoint.
1726	* @param fLocal Local breakpoint.
1727	* @param GCPtrBp Linear address of the breakpoint.
1728	*/
1729	static int dbgcKdCtxHwBpUpdate(PKDCTX pThis, PKDCTXHWBP pBp, uint8_t fAcc, uint8_t fLen,
1730	bool fGlobal, bool fLocal, RTGCPTR GCPtrBp)
1731	{
1732	int rc = VINF_SUCCESS;
1733
1734	/* Did anything actually change?. */
1735	if ( pBp->fAcc != fAcc
1736	\|\| pBp->fLen != fLen
1737	\|\| pBp->fGlobal != fGlobal
1738	\|\| pBp->fLocal != fLocal
1739	\|\| pBp->GCPtrBp != GCPtrBp)
1740	{
1741	/* Clear the old breakpoint. */
1742	if (pBp->hDbgfBp != NIL_DBGFBP)
1743	{
1744	rc = DBGFR3BpClear(pThis->Dbgc.pUVM, pBp->hDbgfBp);
1745	AssertRC(rc);
1746	pBp->hDbgfBp = NIL_DBGFBP;
1747	}
1748
1749	pBp->fAcc = fAcc;
1750	pBp->fLen = fLen;
1751	pBp->fGlobal = fGlobal;
1752	pBp->fLocal = fLocal;
1753	pBp->GCPtrBp = GCPtrBp;
1754	if (pBp->fGlobal \|\| pBp->fLocal)
1755	{
1756	DBGFADDRESS AddrBp;
1757	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &AddrBp, GCPtrBp);
1758
1759	uint8_t cb = 0;
1760	switch (pBp->fLen)
1761	{
1762	case X86_DR7_LEN_BYTE:
1763	cb = 1;
1764	break;
1765	case X86_DR7_LEN_WORD:
1766	cb = 2;
1767	break;
1768	case X86_DR7_LEN_DWORD:
1769	cb = 4;
1770	break;
1771	case X86_DR7_LEN_QWORD:
1772	cb = 8;
1773	break;
1774	default:
1775	AssertFailed();
1776	return VERR_NET_PROTOCOL_ERROR;
1777	}
1778
1779	rc = DBGFR3BpSetReg(pThis->Dbgc.pUVM, &AddrBp, 0 /iHitTrigger/, UINT64_MAX /iHitDisable/,
1780	pBp->fAcc, cb, &pBp->hDbgfBp);
1781	}
1782	}
1783
1784	return rc;
1785	}
1786
1787
1788	/**
1789	* Updates emulated hardware breakpoints based on the written DR7 value.
1790	*
1791	* @returns VBox status code.
1792	* @param pThis The KD context.
1793	* @param uDr7 The DR7 value which is written.
1794	*/
1795	static int dbgcKdCtxHwBpDr7Update(PKDCTX pThis, uint32_t uDr7)
1796	{
1797	int rc = VINF_SUCCESS;
1798
1799	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aHwBp); i++)
1800	{
1801	PKDCTXHWBP pBp = &pThis->aHwBp[i];
1802	uint8_t fAcc = X86_DR7_GET_RW(uDr7, i);
1803	uint8_t fLen = X86_DR7_GET_LEN(uDr7, i);
1804	bool fGlobal = (uDr7 & RT_BIT_32(1 + i * 2)) ? true : false;
1805	bool fLocal = (uDr7 & RT_BIT_32(i * 2)) ? true : false;
1806
1807	int rc2 = dbgcKdCtxHwBpUpdate(pThis, pBp, fAcc, fLen, fGlobal, fLocal, pThis->aHwBp[i].GCPtrBp);
1808	if ( RT_FAILURE(rc2)
1809	&& RT_SUCCESS(rc))
1810	rc = rc2;
1811	}
1812
1813	return rc;
1814	}
1815
1816
1817	/**
1818	* Updates the linear guest pointer for the given hardware breakpoint.
1819	*
1820	* @returns VBox status code.
1821	* @param pThis The KD context.
1822	* @param pBp The breakpoint to update.
1823	* @param GCPtrBp The linear breakpoint address.
1824	*/
1825	DECLINLINE(int) dbgcKdCtxHwBpGCPtrUpdate(PKDCTX pThis, PKDCTXHWBP pBp, RTGCPTR GCPtrBp)
1826	{
1827	return dbgcKdCtxHwBpUpdate(pThis, pBp, pBp->fAcc, pBp->fLen, pBp->fGlobal, pBp->fLocal, GCPtrBp);
1828	}
1829
1830
1831	/**
1832	* Calculates the DR7 value based on the emulated hardware breakpoint state and returns it.
1833	*
1834	* @returns The emulated DR7 value.
1835	* @param pThis The KD context.
1836	*/
1837	static uint32_t dbgcKdCtxHwBpDr7Get(PKDCTX pThis)
1838	{
1839	uint32_t uDr7 = 0;
1840
1841	uDr7 \|= X86_DR7_RW(0, pThis->aHwBp[0].fAcc);
1842	uDr7 \|= X86_DR7_RW(1, pThis->aHwBp[1].fAcc);
1843	uDr7 \|= X86_DR7_RW(2, pThis->aHwBp[2].fAcc);
1844	uDr7 \|= X86_DR7_RW(3, pThis->aHwBp[3].fAcc);
1845
1846	uDr7 \|= X86_DR7_LEN(0, pThis->aHwBp[0].fLen);
1847	uDr7 \|= X86_DR7_LEN(1, pThis->aHwBp[1].fLen);
1848	uDr7 \|= X86_DR7_LEN(2, pThis->aHwBp[2].fLen);
1849	uDr7 \|= X86_DR7_LEN(3, pThis->aHwBp[3].fLen);
1850
1851	uDr7 \|= pThis->aHwBp[0].fGlobal ? X86_DR7_G(0) : 0;
1852	uDr7 \|= pThis->aHwBp[1].fGlobal ? X86_DR7_G(1) : 0;
1853	uDr7 \|= pThis->aHwBp[2].fGlobal ? X86_DR7_G(2) : 0;
1854	uDr7 \|= pThis->aHwBp[3].fGlobal ? X86_DR7_G(3) : 0;
1855
1856	uDr7 \|= pThis->aHwBp[0].fLocal ? X86_DR7_L(0) : 0;
1857	uDr7 \|= pThis->aHwBp[1].fLocal ? X86_DR7_L(1) : 0;
1858	uDr7 \|= pThis->aHwBp[2].fLocal ? X86_DR7_L(2) : 0;
1859	uDr7 \|= pThis->aHwBp[3].fLocal ? X86_DR7_L(3) : 0;
1860
1861	return uDr7;
1862	}
1863
1864
1865	/**
1866	* Updates emulated hardware breakpoints based on the written DR6 value.
1867	*
1868	* @param pThis The KD context.
1869	* @param uDr6 The DR7 value which is written.
1870	*/
1871	static void dbgcKdCtxHwBpDr6Update(PKDCTX pThis, uint32_t uDr6)
1872	{
1873	pThis->aHwBp[0].fTriggered = (uDr6 & X86_DR6_B0) ? true : false;
1874	pThis->aHwBp[1].fTriggered = (uDr6 & X86_DR6_B1) ? true : false;
1875	pThis->aHwBp[2].fTriggered = (uDr6 & X86_DR6_B2) ? true : false;
1876	pThis->aHwBp[3].fTriggered = (uDr6 & X86_DR6_B3) ? true : false;
1877	pThis->fSingleStepped = (uDr6 & X86_DR6_BS) ? true : false;
1878	}
1879
1880
1881	/**
1882	* Calculates the DR6 value based on the emulated hardware breakpoint state and returns it.
1883	*
1884	* @returns The emulated DR6 value.
1885	* @param pThis The KD context.
1886	*/
1887	static uint32_t dbgcKdCtxHwBpDr6Get(PKDCTX pThis)
1888	{
1889	uint32_t uDr6 = 0;
1890
1891	if (pThis->aHwBp[0].fTriggered)
1892	uDr6 \|= X86_DR6_B0;
1893	if (pThis->aHwBp[1].fTriggered)
1894	uDr6 \|= X86_DR6_B1;
1895	if (pThis->aHwBp[2].fTriggered)
1896	uDr6 \|= X86_DR6_B2;
1897	if (pThis->aHwBp[3].fTriggered)
1898	uDr6 \|= X86_DR6_B3;
1899	if (pThis->fSingleStepped)
1900	uDr6 \|= X86_DR6_BS;
1901
1902	return uDr6;
1903	}
1904
1905
1906	/**
1907	* Wrapper for the I/O interface write callback.
1908	*
1909	* @returns Status code.
1910	* @param pThis The KD context.
1911	* @param pvPkt The packet data to send.
1912	* @param cbPkt Size of the packet in bytes.
1913	*/
1914	DECLINLINE(int) dbgcKdCtxWrite(PKDCTX pThis, const void *pvPkt, size_t cbPkt)
1915	{
1916	return pThis->Dbgc.pIo->pfnWrite(pThis->Dbgc.pIo, pvPkt, cbPkt, NULL /pcbWritten/);
1917	}
1918
1919
1920	/**
1921	* Queries a given register set and stores it into the given context buffer.
1922	*
1923	* @returns VBox status code.
1924	* @param pThis The KD context.
1925	* @param idCpu The CPU to query the context for.
1926	* @param paRegs The register set to query.
1927	* @param cRegs Number of entries in the register set.
1928	* @param pvCtx The context buffer to store the data into.
1929	*/
1930	static int dbgcKdCtxQueryRegs(PKDCTX pThis, VMCPUID idCpu, PCKDREGDESC paRegs, uint32_t cRegs, void *pvCtx)
1931	{
1932	int rc = VINF_SUCCESS;
1933
1934	for (uint32_t i = 0; i < cRegs && rc == VINF_SUCCESS; i++)
1935	{
1936	void pvStart = (uint8_t )pvCtx + paRegs[i].offReg;
1937
1938	switch (paRegs[i].enmValType)
1939	{
1940	case DBGFREGVALTYPE_U16: rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, paRegs[i].enmReg, (uint16_t *)pvStart); break;
1941	case DBGFREGVALTYPE_U32: rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, paRegs[i].enmReg, (uint32_t *)pvStart); break;
1942	case DBGFREGVALTYPE_U64: rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, paRegs[i].enmReg, (uint64_t *)pvStart); break;
1943	//case DBGFREGVALTYPE_R80: rc = DBGFR3RegCpuQueryR80(pThis->Dbgc.pUVM, idCpu, paRegs[i].enmReg, (RTFLOAT80U *)pvStart); break;
1944	//case DBGFREGVALTYPE_U128: rc = DBGFR3RegCpuQueryU128(pThis->Dbgc.pUVM, idCpu, paRegs[i].enmReg, (PRTUINT128U)pvStart); break;
1945	default: AssertMsgFailedBreakStmt(("Register type %u not implemented\n", paRegs[i].enmValType), rc = VERR_NOT_IMPLEMENTED);
1946	}
1947
1948	if ( rc == VINF_DBGF_ZERO_EXTENDED_REGISTER
1949	\|\| ( rc == VINF_DBGF_TRUNCATED_REGISTER
1950	&& paRegs[i].enmReg == DBGFREG_RFLAGS)) /* KD protocol specifies 32bit but is really 64bit. */
1951	rc = VINF_SUCCESS;
1952	}
1953
1954	if ( RT_SUCCESS(rc)
1955	&& rc != VINF_SUCCESS)
1956	rc = VERR_DBGF_UNSUPPORTED_CAST;
1957
1958	return rc;
1959	}
1960
1961
1962	/**
1963	* Fills in the given 64bit NT context structure with the requested values.
1964	*
1965	* @returns VBox status code.
1966	* @param pThis The KD context.
1967	* @param idCpu The CPU to query the context for.
1968	* @param pNtCtx The NT context structure to fill in.
1969	* @param fCtxFlags Combination of NTCONTEXT_F_XXX determining what to fill in.
1970	*/
1971	static int dbgcKdCtxQueryNtCtx64(PKDCTX pThis, VMCPUID idCpu, PNTCONTEXT64 pNtCtx, uint32_t fCtxFlags)
1972	{
1973	RT_BZERO(pNtCtx, sizeof(*pNtCtx));
1974
1975	pNtCtx->fContext = NTCONTEXT_F_AMD64;
1976	int rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_MXCSR, &pNtCtx->u32RegMxCsr);
1977
1978	if ( RT_SUCCESS(rc)
1979	&& fCtxFlags & NTCONTEXT_F_CONTROL)
1980	{
1981	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsCtrl64[0], RT_ELEMENTS(g_aRegsCtrl64), pNtCtx);
1982	if (RT_SUCCESS(rc))
1983	pNtCtx->fContext \|= NTCONTEXT_F_CONTROL;
1984	}
1985
1986	if ( RT_SUCCESS(rc)
1987	&& fCtxFlags & NTCONTEXT_F_INTEGER)
1988	{
1989	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsInt64[0], RT_ELEMENTS(g_aRegsInt64), pNtCtx);
1990	if (RT_SUCCESS(rc))
1991	pNtCtx->fContext \|= NTCONTEXT_F_INTEGER;
1992	}
1993
1994	if ( RT_SUCCESS(rc)
1995	&& fCtxFlags & NTCONTEXT_F_SEGMENTS)
1996	{
1997	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsSegs64[0], RT_ELEMENTS(g_aRegsSegs64), pNtCtx);
1998	if (RT_SUCCESS(rc))
1999	pNtCtx->fContext \|= NTCONTEXT_F_SEGMENTS;
2000	}
2001
2002	if ( RT_SUCCESS(rc)
2003	&& fCtxFlags & NTCONTEXT_F_FLOATING_POINT)
2004	{
2005	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsFx64[0], RT_ELEMENTS(g_aRegsFx64), pNtCtx);
2006	if (RT_SUCCESS(rc))
2007	pNtCtx->fContext \|= NTCONTEXT_F_FLOATING_POINT;
2008	}
2009
2010	if ( RT_SUCCESS(rc)
2011	&& fCtxFlags & NTCONTEXT_F_DEBUG)
2012	{
2013	/** @todo NTCONTEXT_F_DEBUG */
2014	}
2015
2016	return rc;
2017	}
2018
2019
2020	/**
2021	* Fills in the given 32bit NT context structure with the requested values.
2022	*
2023	* @returns VBox status code.
2024	* @param pThis The KD context.
2025	* @param idCpu The CPU to query the context for.
2026	* @param pNtCtx The NT context structure to fill in.
2027	* @param fCtxFlags Combination of NTCONTEXT_F_XXX determining what to fill in.
2028	*/
2029	static int dbgcKdCtxQueryNtCtx32(PKDCTX pThis, VMCPUID idCpu, PNTCONTEXT32 pNtCtx, uint32_t fCtxFlags)
2030	{
2031	RT_BZERO(pNtCtx, sizeof(*pNtCtx));
2032
2033	pNtCtx->fContext = NTCONTEXT_F_X86;
2034
2035	int rc = VINF_SUCCESS;
2036	if (fCtxFlags & NTCONTEXT_F_CONTROL)
2037	{
2038	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsCtrl32[0], RT_ELEMENTS(g_aRegsCtrl32), pNtCtx);
2039	if (RT_SUCCESS(rc))
2040	pNtCtx->fContext \|= NTCONTEXT_F_CONTROL;
2041	}
2042
2043	if ( RT_SUCCESS(rc)
2044	&& fCtxFlags & NTCONTEXT_F_INTEGER)
2045	{
2046	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsInt32[0], RT_ELEMENTS(g_aRegsInt32), pNtCtx);
2047	if (RT_SUCCESS(rc))
2048	pNtCtx->fContext \|= NTCONTEXT_F_INTEGER;
2049	}
2050
2051	if ( RT_SUCCESS(rc)
2052	&& fCtxFlags & NTCONTEXT_F_SEGMENTS)
2053	{
2054	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsSegs32[0], RT_ELEMENTS(g_aRegsSegs32), pNtCtx);
2055	if (RT_SUCCESS(rc))
2056	pNtCtx->fContext \|= NTCONTEXT_F_SEGMENTS;
2057	}
2058
2059	if ( RT_SUCCESS(rc)
2060	&& fCtxFlags & NTCONTEXT_F_FLOATING_POINT)
2061	{
2062	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsFx32[0], RT_ELEMENTS(g_aRegsFx32), pNtCtx);
2063	if (RT_SUCCESS(rc))
2064	pNtCtx->fContext \|= NTCONTEXT_F_FLOATING_POINT;
2065	}
2066
2067	if ( RT_SUCCESS(rc)
2068	&& fCtxFlags & NTCONTEXT_F_DEBUG)
2069	{
2070	rc = dbgcKdCtxQueryRegs(pThis, idCpu, &g_aRegsDbg32[0], RT_ELEMENTS(g_aRegsDbg32), pNtCtx);
2071	if (RT_SUCCESS(rc))
2072	pNtCtx->fContext \|= NTCONTEXT_F_DEBUG;
2073	}
2074
2075	return rc;
2076	}
2077
2078
2079	#define KD_REG_INIT(a_pszName, a_enmType, a_ValMember, a_Val) \
2080	do \
2081	{ \
2082	aRegsSet[idxReg].pszName = a_pszName; \
2083	aRegsSet[idxReg].enmType = a_enmType; \
2084	aRegsSet[idxReg].Val.a_ValMember = a_Val; \
2085	idxReg++; \
2086	} while (0)
2087	#define KD_REG_INIT_DTR(a_pszName, a_Base, a_Limit) \
2088	do \
2089	{ \
2090	aRegsSet[idxReg].pszName = a_pszName; \
2091	aRegsSet[idxReg].enmType = DBGFREGVALTYPE_DTR; \
2092	aRegsSet[idxReg].Val.dtr.u64Base = a_Base; \
2093	aRegsSet[idxReg].Val.dtr.u32Limit = a_Limit; \
2094	idxReg++; \
2095	} while (0)
2096	#define KD_REG_INIT_U16(a_pszName, a_Val) KD_REG_INIT(a_pszName, DBGFREGVALTYPE_U16, u16, a_Val)
2097	#define KD_REG_INIT_U32(a_pszName, a_Val) KD_REG_INIT(a_pszName, DBGFREGVALTYPE_U32, u32, a_Val)
2098	#define KD_REG_INIT_U64(a_pszName, a_Val) KD_REG_INIT(a_pszName, DBGFREGVALTYPE_U64, u64, a_Val)
2099
2100
2101	/**
2102	* Writes the indicated values from the given context structure to the guests register set.
2103	*
2104	* @returns VBox status code.
2105	* @param pThis The KD context.
2106	* @param idCpu The CPU to query the context for.
2107	* @param pNtCtx The NT context structure to set.
2108	* @param fCtxFlags Combination of NTCONTEXT_F_XXX determining what to set.
2109	*/
2110	static int dbgcKdCtxSetNtCtx64(PKDCTX pThis, VMCPUID idCpu, PCNTCONTEXT64 pNtCtx, uint32_t fCtxFlags)
2111	{
2112	uint32_t idxReg = 0;
2113	DBGFREGENTRYNM aRegsSet[64]; /** @todo Verify that this is enough when fully implemented. */
2114
2115	KD_REG_INIT_U32("mxcsr", pNtCtx->u32RegMxCsr);
2116
2117	if (fCtxFlags & NTCONTEXT_F_CONTROL)
2118	{
2119	#if 0 /** @todo CPUM returns VERR_NOT_IMPLEMENTED */
2120	KD_REG_INIT_U16("cs", pNtCtx->u16SegCs);
2121	KD_REG_INIT_U16("ss", pNtCtx->u16SegSs);
2122	#endif
2123	KD_REG_INIT_U64("rip", pNtCtx->u64RegRip);
2124	KD_REG_INIT_U64("rsp", pNtCtx->u64RegRsp);
2125	KD_REG_INIT_U64("rbp", pNtCtx->u64RegRbp);
2126	KD_REG_INIT_U32("rflags", pNtCtx->u32RegEflags);
2127	}
2128
2129	if (fCtxFlags & NTCONTEXT_F_INTEGER)
2130	{
2131	KD_REG_INIT_U64("rax", pNtCtx->u64RegRax);
2132	KD_REG_INIT_U64("rcx", pNtCtx->u64RegRcx);
2133	KD_REG_INIT_U64("rdx", pNtCtx->u64RegRdx);
2134	KD_REG_INIT_U64("rbx", pNtCtx->u64RegRbx);
2135	KD_REG_INIT_U64("rsi", pNtCtx->u64RegRsi);
2136	KD_REG_INIT_U64("rdi", pNtCtx->u64RegRdi);
2137	KD_REG_INIT_U64("r8", pNtCtx->u64RegR8);
2138	KD_REG_INIT_U64("r9", pNtCtx->u64RegR9);
2139	KD_REG_INIT_U64("r10", pNtCtx->u64RegR10);
2140	KD_REG_INIT_U64("r11", pNtCtx->u64RegR11);
2141	KD_REG_INIT_U64("r12", pNtCtx->u64RegR12);
2142	KD_REG_INIT_U64("r13", pNtCtx->u64RegR13);
2143	KD_REG_INIT_U64("r14", pNtCtx->u64RegR14);
2144	KD_REG_INIT_U64("r15", pNtCtx->u64RegR15);
2145	}
2146
2147	if (fCtxFlags & NTCONTEXT_F_SEGMENTS)
2148	{
2149	#if 0 /** @todo CPUM returns VERR_NOT_IMPLEMENTED */
2150	KD_REG_INIT_U16("ds", pNtCtx->u16SegDs);
2151	KD_REG_INIT_U16("es", pNtCtx->u16SegEs);
2152	KD_REG_INIT_U16("fs", pNtCtx->u16SegFs);
2153	KD_REG_INIT_U16("gs", pNtCtx->u16SegGs);
2154	#endif
2155	}
2156
2157	if (fCtxFlags & NTCONTEXT_F_FLOATING_POINT)
2158	{
2159	/** @todo NTCONTEXT_F_FLOATING_POINT. */
2160	}
2161
2162	if (fCtxFlags & NTCONTEXT_F_DEBUG)
2163	dbgcKdCtxMsgSend(pThis, true /fWarning/, "Setting local DR registers does not work!");
2164
2165	return DBGFR3RegNmSetBatch(pThis->Dbgc.pUVM, idCpu, &aRegsSet[0], idxReg);
2166	}
2167
2168
2169	/**
2170	* Fills in the given 64bit NT kernel context structure with the requested values.
2171	*
2172	* @returns VBox status code.
2173	* @param pThis The KD context.
2174	* @param idCpu The CPU to query the context for.
2175	* @param pKNtCtx The NT context structure to fill in.
2176	* @param fCtxFlags Combination of NTCONTEXT_F_XXX determining what to fill in.
2177	*/
2178	static int dbgcKdCtxQueryNtKCtx64(PKDCTX pThis, VMCPUID idCpu, PNTKCONTEXT64 pKNtCtx, uint32_t fCtxFlags)
2179	{
2180	RT_BZERO(pKNtCtx, sizeof(*pKNtCtx));
2181
2182	int rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR0, &pKNtCtx->u64RegCr0);
2183	if (RT_SUCCESS(rc))
2184	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR2, &pKNtCtx->u64RegCr2);
2185	if (RT_SUCCESS(rc))
2186	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR3, &pKNtCtx->u64RegCr3);
2187	if (RT_SUCCESS(rc))
2188	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR4, &pKNtCtx->u64RegCr4);
2189	if (RT_SUCCESS(rc))
2190	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR8, &pKNtCtx->u64RegCr8);
2191	if (RT_SUCCESS(rc))
2192	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_GDTR_LIMIT, &pKNtCtx->Gdtr.u16Limit);
2193	if (RT_SUCCESS(rc))
2194	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_GDTR_BASE, &pKNtCtx->Gdtr.u64PtrBase);
2195	if (RT_SUCCESS(rc))
2196	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_IDTR_LIMIT, &pKNtCtx->Idtr.u16Limit);
2197	if (RT_SUCCESS(rc))
2198	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_IDTR_BASE, &pKNtCtx->Idtr.u64PtrBase);
2199	if (RT_SUCCESS(rc))
2200	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_TR, &pKNtCtx->u16RegTr);
2201	if (RT_SUCCESS(rc))
2202	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_LDTR, &pKNtCtx->u16RegLdtr);
2203	if (RT_SUCCESS(rc))
2204	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_MXCSR, &pKNtCtx->u32RegMxCsr);
2205
2206	if (RT_SUCCESS(rc))
2207	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K8_GS_BASE, &pKNtCtx->u64MsrGsBase);
2208	if (RT_SUCCESS(rc))
2209	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K8_KERNEL_GS_BASE, &pKNtCtx->u64MsrKernelGsBase);
2210	if (RT_SUCCESS(rc))
2211	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K6_STAR, &pKNtCtx->u64MsrStar);
2212	if (RT_SUCCESS(rc))
2213	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K8_LSTAR, &pKNtCtx->u64MsrLstar);
2214	if (RT_SUCCESS(rc))
2215	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K8_CSTAR, &pKNtCtx->u64MsrCstar);
2216	if (RT_SUCCESS(rc))
2217	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, idCpu, DBGFREG_MSR_K8_SF_MASK, &pKNtCtx->u64MsrSfMask);
2218	/** @todo XCR0 */
2219
2220	/* Get the emulated DR register state. */
2221	pKNtCtx->u64RegDr0 = pThis->aHwBp[0].GCPtrBp;
2222	pKNtCtx->u64RegDr1 = pThis->aHwBp[1].GCPtrBp;
2223	pKNtCtx->u64RegDr2 = pThis->aHwBp[2].GCPtrBp;
2224	pKNtCtx->u64RegDr3 = pThis->aHwBp[3].GCPtrBp;
2225	pKNtCtx->u64RegDr6 = dbgcKdCtxHwBpDr6Get(pThis);
2226	pKNtCtx->u64RegDr7 = dbgcKdCtxHwBpDr7Get(pThis);
2227
2228	if (RT_SUCCESS(rc))
2229	rc = dbgcKdCtxQueryNtCtx64(pThis, idCpu, &pKNtCtx->Ctx, fCtxFlags);
2230
2231	return rc;
2232	}
2233
2234
2235	/**
2236	* Fills in the given 32bit NT kernel context structure with the requested values.
2237	*
2238	* @returns VBox status code.
2239	* @param pThis The KD context.
2240	* @param idCpu The CPU to query the context for.
2241	* @param pKNtCtx The NT context structure to fill in.
2242	*/
2243	static int dbgcKdCtxQueryNtKCtx32(PKDCTX pThis, VMCPUID idCpu, PNTKCONTEXT32 pKNtCtx)
2244	{
2245	RT_BZERO(pKNtCtx, sizeof(*pKNtCtx));
2246
2247	int rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR0, &pKNtCtx->u32RegCr0);
2248	if (RT_SUCCESS(rc))
2249	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR2, &pKNtCtx->u32RegCr2);
2250	if (RT_SUCCESS(rc))
2251	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR3, &pKNtCtx->u32RegCr3);
2252	if (RT_SUCCESS(rc))
2253	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_CR4, &pKNtCtx->u32RegCr4);
2254
2255	if (RT_SUCCESS(rc))
2256	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_GDTR_LIMIT, &pKNtCtx->Gdtr.u16Limit);
2257	if (RT_SUCCESS(rc))
2258	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_GDTR_BASE, &pKNtCtx->Gdtr.u32PtrBase);
2259	if (RT_SUCCESS(rc))
2260	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_IDTR_LIMIT, &pKNtCtx->Idtr.u16Limit);
2261	if (RT_SUCCESS(rc))
2262	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, idCpu, DBGFREG_IDTR_BASE, &pKNtCtx->Idtr.u32PtrBase);
2263	if (RT_SUCCESS(rc))
2264	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_TR, &pKNtCtx->u16RegTr);
2265	if (RT_SUCCESS(rc))
2266	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, idCpu, DBGFREG_LDTR, &pKNtCtx->u16RegLdtr);
2267
2268	/* Get the emulated DR register state. */
2269	pKNtCtx->u32RegDr0 = (uint32_t)pThis->aHwBp[0].GCPtrBp;
2270	pKNtCtx->u32RegDr1 = (uint32_t)pThis->aHwBp[1].GCPtrBp;
2271	pKNtCtx->u32RegDr2 = (uint32_t)pThis->aHwBp[2].GCPtrBp;
2272	pKNtCtx->u32RegDr3 = (uint32_t)pThis->aHwBp[3].GCPtrBp;
2273	pKNtCtx->u32RegDr6 = dbgcKdCtxHwBpDr6Get(pThis);
2274	pKNtCtx->u32RegDr7 = dbgcKdCtxHwBpDr7Get(pThis);
2275
2276	return rc;
2277	}
2278
2279
2280	/**
2281	* Fills in the given 64bit NT kernel context structure with the requested values.
2282	*
2283	* @returns VBox status code.
2284	* @param pThis The KD context.
2285	* @param idCpu The CPU to query the context for.
2286	* @param pKNtCtx The NT context structure to fill in.
2287	* @param cbSet How many bytes of the context are valid.
2288	*/
2289	static int dbgcKdCtxSetNtKCtx64(PKDCTX pThis, VMCPUID idCpu, PCNTKCONTEXT64 pKNtCtx, size_t cbSet)
2290	{
2291	AssertReturn(cbSet >= RT_UOFFSETOF(NTKCONTEXT64, Ctx), VERR_INVALID_PARAMETER);
2292
2293	uint32_t idxReg = 0;
2294	DBGFREGENTRYNM aRegsSet[64]; /** @todo Verify that this is enough when fully implemented. */
2295
2296	KD_REG_INIT_U64("cr0", pKNtCtx->u64RegCr0);
2297	KD_REG_INIT_U64("cr2", pKNtCtx->u64RegCr2);
2298	KD_REG_INIT_U64("cr3", pKNtCtx->u64RegCr3);
2299	KD_REG_INIT_U64("cr4", pKNtCtx->u64RegCr4);
2300	KD_REG_INIT_U64("cr8", pKNtCtx->u64RegCr8);
2301
2302	KD_REG_INIT_DTR("gdtr", pKNtCtx->Gdtr.u64PtrBase, pKNtCtx->Gdtr.u16Limit);
2303	KD_REG_INIT_DTR("idtr", pKNtCtx->Idtr.u64PtrBase, pKNtCtx->Idtr.u16Limit);
2304
2305	#if 0 /** @todo CPUM returns VERR_NOT_IMPLEMENTED */
2306	KD_REG_INIT_U16("tr", pKNtCtx->u16RegTr);
2307	KD_REG_INIT_U16("ldtr", pKNtCtx->u16RegLdtr);
2308	#endif
2309	KD_REG_INIT_U32("mxcsr", pKNtCtx->u32RegMxCsr);
2310
2311	KD_REG_INIT_U64("msr_gs_base", pKNtCtx->u64MsrGsBase);
2312	KD_REG_INIT_U64("krnl_gs_base", pKNtCtx->u64MsrKernelGsBase);
2313	KD_REG_INIT_U64("star", pKNtCtx->u64MsrStar);
2314	KD_REG_INIT_U64("lstar", pKNtCtx->u64MsrLstar);
2315	KD_REG_INIT_U64("cstar", pKNtCtx->u64MsrCstar);
2316	KD_REG_INIT_U64("sf_mask", pKNtCtx->u64MsrSfMask);
2317
2318	int rc = DBGFR3RegNmSetBatch(pThis->Dbgc.pUVM, idCpu, &aRegsSet[0], idxReg);
2319	if ( RT_SUCCESS(rc)
2320	&& cbSet > RT_UOFFSETOF(NTKCONTEXT64, Ctx)) /** @todo Probably wrong. */
2321	rc = dbgcKdCtxSetNtCtx64(pThis, idCpu, &pKNtCtx->Ctx, pKNtCtx->Ctx.fContext);
2322
2323	if (RT_SUCCESS(rc))
2324	{
2325	/* Update emulated hardware breakpoint state. */
2326	dbgcKdCtxHwBpDr6Update(pThis, (uint32_t)pKNtCtx->u64RegDr6);
2327	rc = dbgcKdCtxHwBpDr7Update(pThis, (uint32_t)pKNtCtx->u64RegDr7);
2328	if (RT_SUCCESS(rc))
2329	rc = dbgcKdCtxHwBpGCPtrUpdate(pThis, &pThis->aHwBp[0], pKNtCtx->u64RegDr0);
2330	if (RT_SUCCESS(rc))
2331	rc = dbgcKdCtxHwBpGCPtrUpdate(pThis, &pThis->aHwBp[1], pKNtCtx->u64RegDr1);
2332	if (RT_SUCCESS(rc))
2333	rc = dbgcKdCtxHwBpGCPtrUpdate(pThis, &pThis->aHwBp[2], pKNtCtx->u64RegDr2);
2334	if (RT_SUCCESS(rc))
2335	rc = dbgcKdCtxHwBpGCPtrUpdate(pThis, &pThis->aHwBp[3], pKNtCtx->u64RegDr3);
2336	}
2337
2338	return rc;
2339	}
2340
2341	#undef KD_REG_INIT_64
2342	#undef KD_REG_INIT_32
2343	#undef KD_REG_INIT_16
2344	#undef KD_REG_INIT_DTR
2345	#undef KD_REG_INIT
2346
2347
2348	/**
2349	* Validates the given KD packet header.
2350	*
2351	* @returns Flag whether the packet header is valid, false if invalid.
2352	* @param pPktHdr The packet header to validate.
2353	*/
2354	static bool dbgcKdPktHdrValidate(PCKDPACKETHDR pPktHdr)
2355	{
2356	if ( pPktHdr->u32Signature != KD_PACKET_HDR_SIGNATURE_DATA
2357	&& pPktHdr->u32Signature != KD_PACKET_HDR_SIGNATURE_CONTROL
2358	&& pPktHdr->u32Signature != KD_PACKET_HDR_SIGNATURE_BREAKIN)
2359	return false;
2360
2361	if (pPktHdr->u16SubType >= KD_PACKET_HDR_SUB_TYPE_MAX)
2362	return false;
2363
2364	uint32_t idPacket = pPktHdr->idPacket & UINT32_C(0xfffffffe);
2365	if ( idPacket != KD_PACKET_HDR_ID_INITIAL
2366	&& idPacket != KD_PACKET_HDR_ID_RESET
2367	&& idPacket != 0 /* Happens on the very first packet */)
2368	return false;
2369
2370	return true;
2371	}
2372
2373
2374	/**
2375	* Generates a checksum from the given buffer.
2376	*
2377	* @returns Generated checksum.
2378	* @param pv The data to generate a checksum from.
2379	* @param cb Number of bytes to checksum.
2380	*/
2381	static uint32_t dbgcKdPktChkSumGen(const void *pv, size_t cb)
2382	{
2383	const uint8_t pb = (const uint8_t )pv;
2384	uint32_t u32ChkSum = 0;
2385
2386	while (cb--)
2387	u32ChkSum += *pb++;
2388
2389	return u32ChkSum;
2390	}
2391
2392
2393	/**
2394	* Generates a checksum from the given segments.
2395	*
2396	* @returns Generated checksum.
2397	* @param paSegs Pointer to the array of segments containing the data.
2398	* @param cSegs Number of segments.
2399	* @param pcbChkSum Where to store the number of bytes checksummed, optional.
2400	*/
2401	static uint32_t dbgcKdPktChkSumGenSg(PCRTSGSEG paSegs, uint32_t cSegs, size_t *pcbChkSum)
2402	{
2403	size_t cbChkSum = 0;
2404	uint32_t u32ChkSum = 0;
2405
2406	for (uint32_t i = 0; i < cSegs; i++)
2407	{
2408	u32ChkSum += dbgcKdPktChkSumGen(paSegs[i].pvSeg, paSegs[i].cbSeg);
2409	cbChkSum += paSegs[i].cbSeg;
2410	}
2411
2412	if (pcbChkSum)
2413	*pcbChkSum = cbChkSum;
2414
2415	return u32ChkSum;
2416	}
2417
2418
2419	/**
2420	* Waits for an acknowledgment.
2421	*
2422	* @returns VBox status code.
2423	* @param pThis The KD context.
2424	* @param msWait Maximum number of milliseconds to wait for an acknowledge.
2425	* @param pfResend Where to store the resend requested flag on success.
2426	*/
2427	static int dbgcKdCtxPktWaitForAck(PKDCTX pThis, RTMSINTERVAL msWait, bool *pfResend)
2428	{
2429	KDPACKETHDR PktAck;
2430	uint8_t pbCur = (uint8_t )&PktAck;
2431	size_t cbLeft = sizeof(PktAck);
2432	uint64_t tsStartMs = RTTimeMilliTS();
2433	int rc = VINF_SUCCESS;
2434
2435	LogFlowFunc(("pThis=%p msWait=%u pfResend=%p\n", pThis, msWait, pfResend));
2436
2437	RT_ZERO(PktAck);
2438
2439	/* There might be breakin packets in the queue, read until we get something else. */
2440	while ( msWait
2441	&& RT_SUCCESS(rc))
2442	{
2443	if (pThis->Dbgc.pIo->pfnInput(pThis->Dbgc.pIo, msWait))
2444	{
2445	size_t cbRead = 0;
2446	rc = pThis->Dbgc.pIo->pfnRead(pThis->Dbgc.pIo, pbCur, 1, &cbRead);
2447	if ( RT_SUCCESS(rc)
2448	&& cbRead == 1)
2449	{
2450	uint64_t tsSpanMs = RTTimeMilliTS() - tsStartMs;
2451	msWait -= RT_MIN(msWait, tsSpanMs);
2452	tsStartMs = RTTimeMilliTS();
2453
2454	if (*pbCur == KD_PACKET_HDR_SIGNATURE_BREAKIN_BYTE)
2455	pThis->fBreakinRecv = true;
2456	else
2457	{
2458	pbCur++;
2459	cbLeft--;
2460	break;
2461	}
2462	}
2463	}
2464	else
2465	rc = VERR_TIMEOUT;
2466	}
2467
2468	if ( RT_SUCCESS(rc)
2469	&& !msWait)
2470	rc = VERR_TIMEOUT;
2471
2472	if (RT_SUCCESS(rc))
2473	{
2474	while ( msWait
2475	&& RT_SUCCESS(rc)
2476	&& cbLeft)
2477	{
2478	if (pThis->Dbgc.pIo->pfnInput(pThis->Dbgc.pIo, msWait))
2479	{
2480	size_t cbRead = 0;
2481	rc = pThis->Dbgc.pIo->pfnRead(pThis->Dbgc.pIo, pbCur, cbLeft, &cbRead);
2482	if (RT_SUCCESS(rc))
2483	{
2484	uint64_t tsSpanMs = RTTimeMilliTS() - tsStartMs;
2485	msWait -= RT_MIN(msWait, tsSpanMs);
2486	tsStartMs = RTTimeMilliTS();
2487
2488	cbLeft -= cbRead;
2489	pbCur += cbRead;
2490	}
2491	}
2492	else
2493	rc = VERR_TIMEOUT;
2494	}
2495
2496	if (RT_SUCCESS(rc))
2497	{
2498	if (PktAck.u32Signature == KD_PACKET_HDR_SIGNATURE_CONTROL)
2499	{
2500	if (PktAck.u16SubType == KD_PACKET_HDR_SUB_TYPE_ACKNOWLEDGE)
2501	rc = VINF_SUCCESS;
2502	else if (PktAck.u16SubType == KD_PACKET_HDR_SUB_TYPE_RESEND)
2503	{
2504	*pfResend = true;
2505	rc = VINF_SUCCESS;
2506	}
2507	else
2508	rc = VERR_NET_PROTOCOL_ERROR;
2509	}
2510	else
2511	rc = VERR_NET_PROTOCOL_ERROR;
2512	}
2513	}
2514
2515	LogFlowFunc(("returns rc=%Rrc pfResend=%RTbool\n", rc, pfResend));
2516	return rc;
2517	}
2518
2519
2520	/**
2521	* Sends the given packet header and optional segmented body (the trailing byte is sent automatically).
2522	*
2523	* @returns VBox status code.
2524	* @param pThis The KD context.
2525	* @param u32Signature The signature to send.
2526	* @param u16SubType The sub type to send.
2527	* @param paSegs Pointer to the array of segments to send in the body, optional.
2528	* @param cSegs Number of segments.
2529	* @param fAck Flag whether to wait for an acknowledge.
2530	*/
2531	static int dbgcKdCtxPktSendSg(PKDCTX pThis, uint32_t u32Signature, uint16_t u16SubType,
2532	PCRTSGSEG paSegs, uint32_t cSegs, bool fAck)
2533	{
2534	int rc = VINF_SUCCESS;
2535	uint32_t cRetriesLeft = 3;
2536	uint8_t bTrailer = KD_PACKET_TRAILING_BYTE;
2537	KDPACKETHDR Hdr;
2538
2539	size_t cbChkSum = 0;
2540	uint32_t u32ChkSum = dbgcKdPktChkSumGenSg(paSegs, cSegs, &cbChkSum);
2541
2542	Hdr.u32Signature = u32Signature;
2543	Hdr.u16SubType = u16SubType;
2544	Hdr.cbBody = (uint16_t)cbChkSum;
2545	Hdr.idPacket = pThis->idPktNext;
2546	Hdr.u32ChkSum = u32ChkSum;
2547
2548	#ifdef LOG_ENABLED
2549	dbgcKdPktDump(&Hdr, paSegs, cSegs, false /fRx/);
2550	#endif
2551
2552	while (cRetriesLeft--)
2553	{
2554	bool fResend = false;
2555
2556	if (pThis->Dbgc.pIo->pfnPktBegin)
2557	{
2558	rc = pThis->Dbgc.pIo->pfnPktBegin(pThis->Dbgc.pIo, 0 /cbPktHint/);
2559	AssertRC(rc);
2560	}
2561
2562	rc = dbgcKdCtxWrite(pThis, &Hdr, sizeof(Hdr));
2563	if ( RT_SUCCESS(rc)
2564	&& paSegs
2565	&& cSegs)
2566	{
2567	for (uint32_t i = 0; i < cSegs && RT_SUCCESS(rc); i++)
2568	rc = dbgcKdCtxWrite(pThis, paSegs[i].pvSeg, paSegs[i].cbSeg);
2569
2570	if (RT_SUCCESS(rc))
2571	rc = dbgcKdCtxWrite(pThis, &bTrailer, sizeof(bTrailer));
2572	}
2573
2574	if ( RT_SUCCESS(rc)
2575	&& pThis->Dbgc.pIo->pfnPktEnd)
2576	rc = pThis->Dbgc.pIo->pfnPktEnd(pThis->Dbgc.pIo);
2577
2578	if (RT_SUCCESS(rc))
2579	{
2580	if (fAck)
2581	rc = dbgcKdCtxPktWaitForAck(pThis, 10 * 1000, &fResend);
2582
2583	if ( RT_SUCCESS(rc)
2584	&& !fResend)
2585	break;
2586	}
2587	}
2588
2589	return rc;
2590	}
2591
2592
2593	/**
2594	* Sends the given packet header and optional body (the trailing byte is sent automatically).
2595	*
2596	* @returns VBox status code.
2597	* @param pThis The KD context.
2598	* @param u32Signature The signature to send.
2599	* @param u16SubType The sub type to send.
2600	* @param pvBody The body to send, optional.
2601	* @param cbBody Body size in bytes.
2602	* @param fAck Flag whether to wait for an acknowledge.
2603	*/
2604	DECLINLINE(int) dbgcKdCtxPktSend(PKDCTX pThis, uint32_t u32Signature, uint16_t u16SubType,
2605	const void *pvBody, size_t cbBody,
2606	bool fAck)
2607	{
2608	RTSGSEG Seg;
2609
2610	Seg.pvSeg = (void *)pvBody;
2611	Seg.cbSeg = cbBody;
2612	return dbgcKdCtxPktSendSg(pThis, u32Signature, u16SubType, cbBody ? &Seg : NULL, cbBody ? 1 : 0, fAck);
2613	}
2614
2615
2616	/**
2617	* Sends a resend packet answer.
2618	*
2619	* @returns VBox status code.
2620	* @param pThis The KD context.
2621	*/
2622	DECLINLINE(int) dbgcKdCtxPktSendResend(PKDCTX pThis)
2623	{
2624	return dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_CONTROL, KD_PACKET_HDR_SUB_TYPE_RESEND,
2625	NULL /pvBody/, 0 /cbBody/, false /fAck/);
2626	}
2627
2628
2629	/**
2630	* Sends a resend packet answer.
2631	*
2632	* @returns VBox status code.
2633	* @param pThis The KD context.
2634	*/
2635	DECLINLINE(int) dbgcKdCtxPktSendReset(PKDCTX pThis)
2636	{
2637	pThis->idPktNext = KD_PACKET_HDR_ID_INITIAL;
2638	return dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_CONTROL, KD_PACKET_HDR_SUB_TYPE_RESET,
2639	NULL /pvBody/, 0 /cbBody/, false /fAck/);
2640	}
2641
2642
2643	/**
2644	* Sends an acknowledge packet answer.
2645	*
2646	* @returns VBox status code.
2647	* @param pThis The KD context.
2648	*/
2649	DECLINLINE(int) dbgcKdCtxPktSendAck(PKDCTX pThis)
2650	{
2651	return dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_CONTROL, KD_PACKET_HDR_SUB_TYPE_ACKNOWLEDGE,
2652	NULL /pvBody/, 0 /cbBody/, false /fAck/);
2653	}
2654
2655
2656	/**
2657	* Resets the packet receive state machine.
2658	*
2659	* @param pThis The KD context.
2660	*/
2661	static void dbgcKdCtxPktRecvReset(PKDCTX pThis)
2662	{
2663	pThis->enmState = KDRECVSTATE_PACKET_HDR_FIRST_BYTE;
2664	pThis->pbRecv = &pThis->PktHdr.ab[0];
2665	pThis->cbRecvLeft = sizeof(pThis->PktHdr.ab[0]);
2666	pThis->msRecvTimeout = RT_INDEFINITE_WAIT;
2667	pThis->tsRecvLast = RTTimeMilliTS();
2668	}
2669
2670
2671	/**
2672	* Sends a Debug I/O string packet.
2673	*
2674	* @returns VBox status code.
2675	* @param pThis The KD context data.
2676	* @param idCpu The CPU ID generating this packet.
2677	* @param pachChars The characters to send (ASCII).
2678	* @param cbChars Number of characters to send.
2679	*/
2680	static int dbgcKdCtxDebugIoStrSend(PKDCTX pThis, VMCPUID idCpu, const char *pachChars, size_t cbChars)
2681	{
2682	KDPACKETDEBUGIO DebugIo;
2683	RT_ZERO(DebugIo);
2684
2685	/* Fix your damn log strings if this exceeds 4GB... */
2686	if (cbChars != (uint32_t)cbChars)
2687	return VERR_BUFFER_OVERFLOW;
2688
2689	DebugIo.u32Type = KD_PACKET_DEBUG_IO_STRING;
2690	DebugIo.u16CpuLvl = 0x6;
2691	DebugIo.idCpu = (uint16_t)idCpu;
2692	DebugIo.u.Str.cbStr = (uint32_t)cbChars;
2693
2694	RTSGSEG aRespSegs[2];
2695
2696	aRespSegs[0].pvSeg = &DebugIo;
2697	aRespSegs[0].cbSeg = sizeof(DebugIo);
2698	aRespSegs[1].pvSeg = (void *)pachChars;
2699	aRespSegs[1].cbSeg = cbChars;
2700
2701	int rc = dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_DEBUG_IO,
2702	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
2703	if (RT_SUCCESS(rc))
2704	pThis->idPktNext ^= 0x1;
2705
2706	return rc;
2707	}
2708
2709
2710	/**
2711	* Sends a message to the remotes end.
2712	*
2713	* @param pThis The KD context data.
2714	* @param fWarning Flag whether this is a warning or an informational message.
2715	* @param pszMsg The message to send.
2716	*/
2717	static void dbgcKdCtxMsgSend(PKDCTX pThis, bool fWarning, const char *pszMsg)
2718	{
2719	size_t cchMsg = strlen(pszMsg);
2720
2721	KDPACKETDEBUGIO DebugIo;
2722	RT_ZERO(DebugIo);
2723
2724	DebugIo.u32Type = KD_PACKET_DEBUG_IO_STRING;
2725	DebugIo.u16CpuLvl = 0x6;
2726	DebugIo.idCpu = 0;
2727
2728	RTSGSEG aRespSegs[5];
2729
2730	aRespSegs[0].pvSeg = &DebugIo;
2731	aRespSegs[0].cbSeg = sizeof(DebugIo);
2732	aRespSegs[1].pvSeg = (void *)"VBoxDbg ";
2733	aRespSegs[1].cbSeg = sizeof("VBoxDbg ") - 1;
2734	if (fWarning)
2735	{
2736	aRespSegs[2].pvSeg = (void *)"WARNING ";
2737	aRespSegs[2].cbSeg = sizeof("WARNING ") - 1;
2738	}
2739	else
2740	{
2741	aRespSegs[2].pvSeg = (void *)"INFO ";
2742	aRespSegs[2].cbSeg = sizeof("INFO ") - 1;
2743	}
2744	aRespSegs[3].pvSeg = (void *)pszMsg;
2745	aRespSegs[3].cbSeg = cchMsg;
2746	aRespSegs[4].pvSeg = (void *)"\r\n";
2747	aRespSegs[4].cbSeg = 2;
2748
2749	DebugIo.u.Str.cbStr = (uint32_t)( aRespSegs[1].cbSeg
2750	+ aRespSegs[2].cbSeg
2751	+ aRespSegs[3].cbSeg
2752	+ aRespSegs[4].cbSeg);
2753
2754	int rc = dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_DEBUG_IO,
2755	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
2756	if (RT_SUCCESS(rc))
2757	pThis->idPktNext ^= 0x1;
2758	}
2759
2760
2761	/**
2762	* Queries some user input from the remotes end.
2763	*
2764	* @returns VBox status code.
2765	* @param pThis The KD context data.
2766	* @param idCpu The CPU ID generating this packet.
2767	* @param pachPrompt The prompt to send (ASCII).
2768	* @param cbPrompt Number of characters to send for the prompt.
2769	* @param cbResponseMax Maximum size for the response.
2770	*/
2771	static int dbgcKdCtxDebugIoGetStrSend(PKDCTX pThis, VMCPUID idCpu, const char *pachPrompt, size_t cbPrompt,
2772	size_t cbResponseMax)
2773	{
2774	KDPACKETDEBUGIO DebugIo;
2775	RT_ZERO(DebugIo);
2776
2777	/* Fix your damn log strings if this exceeds 4GB... */
2778	if ( cbPrompt != (uint32_t)cbPrompt
2779	\|\| cbResponseMax != (uint32_t)cbResponseMax)
2780	return VERR_BUFFER_OVERFLOW;
2781
2782	DebugIo.u32Type = KD_PACKET_DEBUG_IO_GET_STRING;
2783	DebugIo.u16CpuLvl = 0x6;
2784	DebugIo.idCpu = (uint16_t)idCpu;
2785	DebugIo.u.Prompt.cbPrompt = (uint32_t)cbPrompt;
2786	DebugIo.u.Prompt.cbReturn = (uint32_t)cbResponseMax;
2787
2788	RTSGSEG aRespSegs[2];
2789
2790	aRespSegs[0].pvSeg = &DebugIo;
2791	aRespSegs[0].cbSeg = sizeof(DebugIo);
2792	aRespSegs[1].pvSeg = (void *)pachPrompt;
2793	aRespSegs[1].cbSeg = cbPrompt;
2794
2795	int rc = dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_DEBUG_IO,
2796	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
2797	if (RT_SUCCESS(rc))
2798	pThis->idPktNext ^= 0x1;
2799
2800	return rc;
2801	}
2802
2803
2804	/**
2805	* Sends a state change event packet.
2806	*
2807	* @returns VBox status code.
2808	* @param pThis The KD context data.
2809	* @param enmType The event type.
2810	*/
2811	static int dbgcKdCtxStateChangeSend(PKDCTX pThis, DBGFEVENTTYPE enmType)
2812	{
2813	LogFlowFunc(("pThis=%p enmType=%u\n", pThis, enmType));
2814
2815	/* Select the record to send based on the CPU mode. */
2816	int rc = VINF_SUCCESS;
2817	KDPACKETSTATECHANGE64 StateChange64;
2818	RT_ZERO(StateChange64);
2819
2820	StateChange64.u32StateNew = KD_PACKET_STATE_CHANGE_EXCEPTION;
2821	StateChange64.u16CpuLvl = 0x6; /** @todo Figure this one out. */
2822	StateChange64.idCpu = pThis->Dbgc.idCpu;
2823	StateChange64.cCpus = (uint16_t)DBGFR3CpuGetCount(pThis->Dbgc.pUVM);
2824	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_RIP, &StateChange64.u64RipThread);
2825	if (RT_SUCCESS(rc))
2826	{
2827	DBGFADDRESS AddrRip;
2828	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &AddrRip, StateChange64.u64RipThread);
2829
2830	StateChange64.u64RipThread = KD_PTR_CREATE(pThis, StateChange64.u64RipThread);
2831
2832	/** @todo Properly fill in the exception record. */
2833	switch (enmType)
2834	{
2835	case DBGFEVENT_HALT_DONE:
2836	case DBGFEVENT_BREAKPOINT:
2837	case DBGFEVENT_BREAKPOINT_IO:
2838	case DBGFEVENT_BREAKPOINT_MMIO:
2839	case DBGFEVENT_BREAKPOINT_HYPER:
2840	StateChange64.u.Exception.ExcpRec.u32ExcpCode = KD_PACKET_EXCP_CODE_BKPT;
2841	break;
2842	case DBGFEVENT_STEPPED:
2843	case DBGFEVENT_STEPPED_HYPER:
2844	pThis->fSingleStepped = true; /* For emulation of DR6. */
2845	StateChange64.u.Exception.ExcpRec.u32ExcpCode = KD_PACKET_EXCP_CODE_SINGLE_STEP;
2846	break;
2847	default:
2848	AssertMsgFailed(("Invalid DBGF event type for state change %d!\n", enmType));
2849	}
2850
2851	StateChange64.u.Exception.ExcpRec.cExcpParms = 3;
2852	StateChange64.u.Exception.u32FirstChance = 0x1;
2853
2854	/** @todo Properly fill in the control report. */
2855	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_DR6, &StateChange64.uCtrlReport.Amd64.u64RegDr6);
2856	if (RT_SUCCESS(rc))
2857	rc = DBGFR3RegCpuQueryU64(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_DR7, &StateChange64.uCtrlReport.Amd64.u64RegDr7);
2858	if (RT_SUCCESS(rc))
2859	rc = DBGFR3RegCpuQueryU32(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_RFLAGS, &StateChange64.uCtrlReport.Amd64.u32RegEflags);
2860	if (RT_SUCCESS(rc))
2861	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_CS, &StateChange64.uCtrlReport.Amd64.u16SegCs);
2862	if (RT_SUCCESS(rc))
2863	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_DS, &StateChange64.uCtrlReport.Amd64.u16SegDs);
2864	if (RT_SUCCESS(rc))
2865	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_ES, &StateChange64.uCtrlReport.Amd64.u16SegEs);
2866	if (RT_SUCCESS(rc))
2867	rc = DBGFR3RegCpuQueryU16(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGFREG_FS, &StateChange64.uCtrlReport.Amd64.u16SegFs);
2868
2869	/* Read instruction bytes. */
2870	StateChange64.uCtrlReport.Amd64.cbInsnStream = sizeof(StateChange64.uCtrlReport.Amd64.abInsn);
2871	rc = DBGFR3MemRead(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, &AddrRip,
2872	&StateChange64.uCtrlReport.Amd64.abInsn[0], StateChange64.uCtrlReport.Amd64.cbInsnStream);
2873	if (RT_SUCCESS(rc))
2874	{
2875	pThis->idPktNext = KD_PACKET_HDR_ID_INITIAL;
2876	rc = dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_CHANGE64,
2877	&StateChange64, sizeof(StateChange64), false /fAck/);
2878	}
2879	}
2880
2881	LogFlowFunc(("returns %Rrc\n", rc));
2882	return rc;
2883	}
2884
2885
2886	/**
2887	* Processes a get version 64 request.
2888	*
2889	* @returns VBox status code.
2890	* @param pThis The KD context.
2891	* @param pPktManip The manipulate packet request.
2892	*/
2893	static int dbgcKdCtxPktManipulate64GetVersion(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
2894	{
2895	KDPACKETMANIPULATE64 Resp;
2896	RT_ZERO(Resp);
2897
2898	/* Fill in the generic part. */
2899	Resp.Hdr.idReq = KD_PACKET_MANIPULATE_REQ_GET_VERSION;
2900	Resp.Hdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
2901	Resp.Hdr.idCpu = pPktManip->Hdr.idCpu;
2902	Resp.Hdr.u32NtStatus = NTSTATUS_SUCCESS;
2903
2904	/* Build our own response in case there is no Windows interface available. */
2905	uint32_t NtBuildNumber = 0x0f2800; /* Used when there is no NT interface available, which probably breaks symbol loading. */
2906	bool f32Bit = false;
2907	if (pThis->pIfWinNt)
2908	{
2909	int rc = pThis->pIfWinNt->pfnQueryVersion(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(),
2910	NULL /puVersMajor/, NULL /puVersMinor/,
2911	&NtBuildNumber, &f32Bit);
2912	if (RT_SUCCESS(rc))
2913	rc = pThis->pIfWinNt->pfnQueryKernelPtrs(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(),
2914	&Resp.u.GetVersion.u64PtrKernBase,
2915	&Resp.u.GetVersion.u64PtrPsLoadedModuleList);
2916	}
2917
2918	/* Fill in the request specific part. */
2919	Resp.u.GetVersion.u16VersMaj = NtBuildNumber >> 16;
2920	Resp.u.GetVersion.u16VersMin = NtBuildNumber & UINT32_C(0xffff);
2921	Resp.u.GetVersion.u8VersProtocol = 0x6; /* From a Windows 10 guest. */
2922	Resp.u.GetVersion.u8VersKdSecondary = pThis->f32Bit ? 0 : 0x2; /* amd64 has a versioned context (0 and 1 are obsolete). */
2923	Resp.u.GetVersion.fFlags = KD_PACKET_MANIPULATE64_GET_VERSION_F_MP;
2924	Resp.u.GetVersion.u8MaxPktType = KD_PACKET_HDR_SUB_TYPE_MAX;
2925	Resp.u.GetVersion.u8MaxStateChange = KD_PACKET_STATE_CHANGE_MAX - KD_PACKET_STATE_CHANGE_MIN;
2926	Resp.u.GetVersion.u8MaxManipulate = KD_PACKET_MANIPULATE_REQ_MAX - KD_PACKET_MANIPULATE_REQ_MIN;
2927	Resp.u.GetVersion.u64PtrDebuggerDataList = 0;
2928
2929	if (f32Bit)
2930	{
2931	Resp.u.GetVersion.u16MachineType = IMAGE_FILE_MACHINE_I386;
2932	Resp.u.GetVersion.u64PtrKernBase = KD_PTR_CREATE(pThis, Resp.u.GetVersion.u64PtrKernBase);
2933	Resp.u.GetVersion.u64PtrPsLoadedModuleList = KD_PTR_CREATE(pThis, Resp.u.GetVersion.u64PtrPsLoadedModuleList);
2934	}
2935	else
2936	{
2937	Resp.u.GetVersion.u16MachineType = IMAGE_FILE_MACHINE_AMD64;
2938	Resp.u.GetVersion.fFlags \|= KD_PACKET_MANIPULATE64_GET_VERSION_F_PTR64;
2939	}
2940
2941	return dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
2942	&Resp, sizeof(Resp), true /fAck/);
2943	}
2944
2945
2946	/**
2947	* Processes a read memory 64 request.
2948	*
2949	* @returns VBox status code.
2950	* @param pThis The KD context.
2951	* @param pPktManip The manipulate packet request.
2952	*/
2953	static int dbgcKdCtxPktManipulate64ReadMem(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
2954	{
2955	KDPACKETMANIPULATEHDR RespHdr;
2956	KDPACKETMANIPULATE_XFERMEM64 XferMem64;
2957	uint8_t abMem[_4K];
2958	RT_ZERO(RespHdr); RT_ZERO(XferMem64);
2959
2960	DBGFADDRESS AddrRead;
2961	uint32_t cbRead = RT_MIN(sizeof(abMem), pPktManip->u.XferMem.cbXferReq);
2962	if (pPktManip->Hdr.idReq == KD_PACKET_MANIPULATE_REQ_READ_VIRT_MEM)
2963	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &AddrRead, KD_PTR_GET(pThis, pPktManip->u.XferMem.u64PtrTarget));
2964	else
2965	DBGFR3AddrFromPhys(pThis->Dbgc.pUVM, &AddrRead, KD_PTR_GET(pThis, pPktManip->u.XferMem.u64PtrTarget));
2966
2967	RTSGSEG aRespSegs[3];
2968	uint32_t cSegs = 2; /* Gets incremented when read is successful. */
2969	RespHdr.idReq = pPktManip->Hdr.idReq;
2970	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
2971	RespHdr.idCpu = pPktManip->Hdr.idCpu;
2972	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
2973
2974	XferMem64.u64PtrTarget = pPktManip->u.XferMem.u64PtrTarget;
2975	XferMem64.cbXferReq = pPktManip->u.XferMem.cbXferReq;
2976	XferMem64.cbXfered = (uint32_t)cbRead;
2977
2978	aRespSegs[0].pvSeg = &RespHdr;
2979	aRespSegs[0].cbSeg = sizeof(RespHdr);
2980	aRespSegs[1].pvSeg = &XferMem64;
2981	aRespSegs[1].cbSeg = sizeof(XferMem64);
2982
2983	int rc = DBGFR3MemRead(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, &AddrRead, &abMem[0], cbRead);
2984	if (RT_SUCCESS(rc))
2985	{
2986	cSegs++;
2987	aRespSegs[2].pvSeg = &abMem[0];
2988	aRespSegs[2].cbSeg = cbRead;
2989	}
2990	else
2991	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Convert to an appropriate NT status code. */
2992
2993	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
2994	&aRespSegs[0], cSegs, true /fAck/);
2995	}
2996
2997
2998	/**
2999	* Processes a write memory 64 request.
3000	*
3001	* @returns VBox status code.
3002	* @param pThis The KD context.
3003	* @param pPktManip The manipulate packet request.
3004	*/
3005	static int dbgcKdCtxPktManipulate64WriteMem(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3006	{
3007	KDPACKETMANIPULATEHDR RespHdr;
3008	KDPACKETMANIPULATE_XFERMEM64 XferMem64;
3009	RT_ZERO(RespHdr); RT_ZERO(XferMem64);
3010
3011	DBGFADDRESS AddrWrite;
3012	const void pv = &pThis->abBody[sizeof(pPktManip)]; /* Data comes directly after the manipulate state body. */
3013	uint32_t cbWrite = RT_MIN(sizeof(pThis->abBody) - sizeof(*pPktManip), pPktManip->u.XferMem.cbXferReq);
3014	if (pPktManip->Hdr.idReq == KD_PACKET_MANIPULATE_REQ_WRITE_VIRT_MEM)
3015	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &AddrWrite, KD_PTR_GET(pThis, pPktManip->u.XferMem.u64PtrTarget));
3016	else
3017	DBGFR3AddrFromPhys(pThis->Dbgc.pUVM, &AddrWrite, KD_PTR_GET(pThis, pPktManip->u.XferMem.u64PtrTarget));
3018
3019	RTSGSEG aRespSegs[2];
3020	uint32_t cSegs = 2;
3021	RespHdr.idReq = pPktManip->Hdr.idReq;
3022	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3023	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3024	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3025
3026	XferMem64.u64PtrTarget = pPktManip->u.XferMem.u64PtrTarget;
3027	XferMem64.cbXferReq = pPktManip->u.XferMem.cbXferReq;
3028	XferMem64.cbXfered = (uint32_t)cbWrite;
3029
3030	aRespSegs[0].pvSeg = &RespHdr;
3031	aRespSegs[0].cbSeg = sizeof(RespHdr);
3032	aRespSegs[1].pvSeg = &XferMem64;
3033	aRespSegs[1].cbSeg = sizeof(XferMem64);
3034
3035	int rc = DBGFR3MemWrite(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, &AddrWrite, pv, cbWrite);
3036	if (RT_FAILURE(rc))
3037	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Convert to an appropriate NT status code. */
3038
3039	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3040	&aRespSegs[0], cSegs, true /fAck/);
3041	}
3042
3043
3044	/**
3045	* Processes a continue request.
3046	*
3047	* @returns VBox status code.
3048	* @param pThis The KD context.
3049	* @param pPktManip The manipulate packet request.
3050	*/
3051	static int dbgcKdCtxPktManipulate64Continue(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3052	{
3053	RT_NOREF(pPktManip);
3054	int rc = VINF_SUCCESS;
3055
3056	/* No response, just resume. */
3057	if (DBGFR3IsHalted(pThis->Dbgc.pUVM, VMCPUID_ALL))
3058	rc = DBGFR3Resume(pThis->Dbgc.pUVM, VMCPUID_ALL);
3059
3060	return rc;
3061	}
3062
3063
3064	/**
3065	* Processes a continue request.
3066	*
3067	* @returns VBox status code.
3068	* @param pThis The KD context.
3069	* @param pPktManip The manipulate packet request.
3070	*/
3071	static int dbgcKdCtxPktManipulate64Continue2(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3072	{
3073	int rc = VINF_SUCCESS;
3074
3075	/* Update DR7. */
3076	if (pThis->f32Bit)
3077	rc = dbgcKdCtxHwBpDr7Update(pThis, pPktManip->u.Continue2.u.x86.u32RegDr7);
3078	else
3079	rc = dbgcKdCtxHwBpDr7Update(pThis, (uint32_t)pPktManip->u.Continue2.u.amd64.u64RegDr7);
3080
3081	/* Resume if not single stepping, the single step will get a state change when the VM stepped. */
3082	if (pPktManip->u.Continue2.fTrace)
3083	{
3084	PDBGFADDRESS pStackPop = NULL;
3085	RTGCPTR cbStackPop = 0;
3086	rc = DBGFR3StepEx(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, DBGF_STEP_F_INTO, NULL,
3087	pStackPop, cbStackPop, 1 /cMaxSteps/);
3088	}
3089	else if (DBGFR3IsHalted(pThis->Dbgc.pUVM, VMCPUID_ALL))
3090	rc = DBGFR3Resume(pThis->Dbgc.pUVM, VMCPUID_ALL);
3091
3092	return rc;
3093	}
3094
3095
3096	/**
3097	* Processes a set context request.
3098	*
3099	* @returns VBox status code.
3100	* @param pThis The KD context.
3101	* @param pPktManip The manipulate packet request.
3102	*/
3103	static int dbgcKdCtxPktManipulate64SetContext(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3104	{
3105	KDPACKETMANIPULATEHDR RespHdr;
3106	KDPACKETMANIPULATE_SETCONTEXT SetContext;
3107	RT_ZERO(RespHdr); RT_ZERO(SetContext);
3108
3109	PCNTCONTEXT64 pNtCtx = (PCNTCONTEXT64)&pThis->abBody[sizeof(pPktManip)]; / Data comes directly after the manipulate state body. */
3110
3111	RTSGSEG aRespSegs[2];
3112	uint32_t cSegs = 2;
3113	RespHdr.idReq = pPktManip->Hdr.idReq;
3114	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3115	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3116	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3117
3118	/** @todo What do these flags mean? Can't be the context state to set because the valid one is
3119	* in NTCONTEXT64::fContext (observed with WinDbg). */
3120	SetContext.u32CtxFlags = pPktManip->u.SetContext.u32CtxFlags;
3121
3122	aRespSegs[0].pvSeg = &RespHdr;
3123	aRespSegs[0].cbSeg = sizeof(RespHdr);
3124	aRespSegs[1].pvSeg = &SetContext;
3125	aRespSegs[1].cbSeg = sizeof(SetContext);
3126
3127	int rc = dbgcKdCtxSetNtCtx64(pThis, pPktManip->Hdr.idCpu, pNtCtx, pNtCtx->fContext);
3128	if (RT_FAILURE(rc))
3129	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Convert to an appropriate NT status code. */
3130
3131	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3132	&aRespSegs[0], cSegs, true /fAck/);
3133	}
3134
3135
3136	/**
3137	* Processes a read control space 64 request.
3138	*
3139	* @returns VBox status code.
3140	* @param pThis The KD context.
3141	* @param pPktManip The manipulate packet request.
3142	*/
3143	static int dbgcKdCtxPktManipulate64ReadCtrlSpace(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3144	{
3145	KDPACKETMANIPULATEHDR RespHdr;
3146	KDPACKETMANIPULATE_XFERCTRLSPACE64 XferCtrlSpace64;
3147	uint8_t abResp[sizeof(NTKCONTEXT64)];
3148	uint32_t cbData = 0;
3149	RT_ZERO(RespHdr); RT_ZERO(XferCtrlSpace64);
3150	RT_ZERO(abResp);
3151
3152	RTSGSEG aRespSegs[3];
3153	uint32_t cSegs = 2; /* Gets incremented when read is successful. */
3154	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE;
3155	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3156	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3157	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3158
3159	XferCtrlSpace64.u64IdXfer = pPktManip->u.XferCtrlSpace.u64IdXfer;
3160	XferCtrlSpace64.cbXferReq = pPktManip->u.XferCtrlSpace.cbXferReq;
3161
3162	aRespSegs[0].pvSeg = &RespHdr;
3163	aRespSegs[0].cbSeg = sizeof(RespHdr);
3164	aRespSegs[1].pvSeg = &XferCtrlSpace64;
3165	aRespSegs[1].cbSeg = sizeof(XferCtrlSpace64);
3166
3167	int rc = VINF_SUCCESS;
3168	if (pThis->f32Bit)
3169	{
3170	if (pPktManip->u.XferCtrlSpace.u64IdXfer == sizeof(NTCONTEXT32))
3171	{
3172	/* Queries the kernel context. */
3173	rc = dbgcKdCtxQueryNtKCtx32(pThis, RespHdr.idCpu, (PNTKCONTEXT32)&abResp[0]);
3174	if (RT_SUCCESS(rc))
3175	cbData = sizeof(NTKCONTEXT32);
3176	}
3177	}
3178	else
3179	{
3180	switch (pPktManip->u.XferCtrlSpace.u64IdXfer)
3181	{
3182	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCR:
3183	{
3184	if (pThis->pIfWinNt)
3185	{
3186	RTGCUINTPTR GCPtrKpcr = 0;
3187
3188	rc = pThis->pIfWinNt->pfnQueryKpcrForVCpu(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(), RespHdr.idCpu,
3189	&GCPtrKpcr, NULL /pKpcrb/);
3190	if (RT_SUCCESS(rc))
3191	memcpy(&abResp[0], &GCPtrKpcr, sizeof(GCPtrKpcr));
3192	}
3193
3194	cbData = sizeof(RTGCUINTPTR);
3195	break;
3196	}
3197	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCRB:
3198	{
3199	if (pThis->pIfWinNt)
3200	{
3201	RTGCUINTPTR GCPtrKpcrb = 0;
3202
3203	rc = pThis->pIfWinNt->pfnQueryKpcrForVCpu(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(), RespHdr.idCpu,
3204	NULL /pKpcr/, &GCPtrKpcrb);
3205	if (RT_SUCCESS(rc))
3206	memcpy(&abResp[0], &GCPtrKpcrb, sizeof(GCPtrKpcrb));
3207	}
3208
3209	cbData = sizeof(RTGCUINTPTR);
3210	break;
3211	}
3212	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KCTX:
3213	{
3214	rc = dbgcKdCtxQueryNtKCtx64(pThis, RespHdr.idCpu, (PNTKCONTEXT64)&abResp[0], NTCONTEXT64_F_FULL);
3215	if (RT_SUCCESS(rc))
3216	cbData = sizeof(NTKCONTEXT64);
3217	break;
3218	}
3219	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KTHRD:
3220	{
3221	if (pThis->pIfWinNt)
3222	{
3223	RTGCUINTPTR GCPtrCurThrd = 0;
3224
3225	rc = pThis->pIfWinNt->pfnQueryCurThrdForVCpu(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(),
3226	RespHdr.idCpu, &GCPtrCurThrd);
3227	if (RT_SUCCESS(rc))
3228	memcpy(&abResp[0], &GCPtrCurThrd, sizeof(GCPtrCurThrd));
3229	}
3230
3231	cbData = sizeof(RTGCUINTPTR);
3232	break;
3233	}
3234	default:
3235	rc = VERR_NOT_SUPPORTED;
3236	break;
3237	}
3238	}
3239
3240	if ( RT_SUCCESS(rc)
3241	&& cbData)
3242	{
3243	XferCtrlSpace64.cbXfered = RT_MIN(cbData, XferCtrlSpace64.cbXferReq);
3244
3245	cSegs++;
3246	aRespSegs[2].pvSeg = &abResp[0];
3247	aRespSegs[2].cbSeg = cbData;
3248	}
3249	else if (RT_FAILURE(rc))
3250	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Convert to an appropriate NT status code. */
3251
3252	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3253	&aRespSegs[0], cSegs, true /fAck/);
3254	}
3255
3256
3257	/**
3258	* Processes a write control space 64 request.
3259	*
3260	* @returns VBox status code.
3261	* @param pThis The KD context.
3262	* @param pPktManip The manipulate packet request.
3263	*/
3264	static int dbgcKdCtxPktManipulate64WriteCtrlSpace(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3265	{
3266	KDPACKETMANIPULATEHDR RespHdr;
3267	KDPACKETMANIPULATE_XFERCTRLSPACE64 XferCtrlSpace64;
3268	uint32_t cbData = 0;
3269	RT_ZERO(RespHdr); RT_ZERO(XferCtrlSpace64);
3270
3271	RTSGSEG aRespSegs[2];
3272	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_WRITE_CTRL_SPACE;
3273	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3274	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3275	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3276
3277	XferCtrlSpace64.u64IdXfer = pPktManip->u.XferCtrlSpace.u64IdXfer;
3278	XferCtrlSpace64.cbXferReq = pPktManip->u.XferCtrlSpace.cbXferReq;
3279
3280	aRespSegs[0].pvSeg = &RespHdr;
3281	aRespSegs[0].cbSeg = sizeof(RespHdr);
3282	aRespSegs[1].pvSeg = &XferCtrlSpace64;
3283	aRespSegs[1].cbSeg = sizeof(XferCtrlSpace64);
3284
3285	int rc = VINF_SUCCESS;
3286	switch (pPktManip->u.XferCtrlSpace.u64IdXfer)
3287	{
3288	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KCTX:
3289	{
3290	PCNTKCONTEXT64 pNtKCtx = (PCNTKCONTEXT64)&pThis->abBody[sizeof(pPktManip)]; / Data comes directly after the manipulate state body. */
3291	rc = dbgcKdCtxSetNtKCtx64(pThis, RespHdr.idCpu, pNtKCtx, XferCtrlSpace64.cbXferReq);
3292	if (RT_SUCCESS(rc))
3293	cbData = RT_MIN(XferCtrlSpace64.cbXferReq, sizeof(NTKCONTEXT64));
3294	break;
3295	}
3296	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCR:
3297	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KPCRB:
3298	case KD_PACKET_MANIPULATE64_CTRL_SPACE_ID_KTHRD:
3299	default:
3300	rc = VERR_NOT_SUPPORTED;
3301	break;
3302	}
3303
3304	if (RT_FAILURE(rc))
3305	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Convert to an appropriate NT status code. */
3306	else
3307	XferCtrlSpace64.cbXfered = cbData;
3308
3309	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3310	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
3311	}
3312
3313
3314	/**
3315	* Processes a restore breakpoint 64 request.
3316	*
3317	* @returns VBox status code.
3318	* @param pThis The KD context.
3319	* @param pPktManip The manipulate packet request.
3320	*/
3321	static int dbgcKdCtxPktManipulate64RestoreBkpt(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3322	{
3323	KDPACKETMANIPULATEHDR RespHdr;
3324	KDPACKETMANIPULATE_RESTOREBKPT64 RestoreBkpt64;
3325	RT_ZERO(RespHdr); RT_ZERO(RestoreBkpt64);
3326
3327	RTSGSEG aRespSegs[2];
3328	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT;
3329	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3330	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3331	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3332
3333	RestoreBkpt64.u32HndBkpt = pPktManip->u.RestoreBkpt.u32HndBkpt;
3334
3335	aRespSegs[0].pvSeg = &RespHdr;
3336	aRespSegs[0].cbSeg = sizeof(RespHdr);
3337	aRespSegs[1].pvSeg = &RestoreBkpt64;
3338	aRespSegs[1].cbSeg = sizeof(RestoreBkpt64);
3339
3340	int rc = DBGFR3BpClear(pThis->Dbgc.pUVM, pPktManip->u.RestoreBkpt.u32HndBkpt);
3341	if (RT_SUCCESS(rc))
3342	{
3343	rc = dbgcBpDelete(&pThis->Dbgc, pPktManip->u.RestoreBkpt.u32HndBkpt);
3344	AssertRC(rc);
3345	}
3346	else if (rc != VERR_DBGF_BP_NOT_FOUND)
3347	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL;
3348
3349	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3350	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
3351	}
3352
3353
3354	/**
3355	* Processes a write breakpoint 64 request.
3356	*
3357	* @returns VBox status code.
3358	* @param pThis The KD context.
3359	* @param pPktManip The manipulate packet request.
3360	*/
3361	static int dbgcKdCtxPktManipulate64WriteBkpt(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3362	{
3363	KDPACKETMANIPULATEHDR RespHdr;
3364	KDPACKETMANIPULATE_WRITEBKPT64 WriteBkpt64;
3365	RT_ZERO(RespHdr); RT_ZERO(WriteBkpt64);
3366
3367	RTSGSEG aRespSegs[2];
3368	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_WRITE_BKPT;
3369	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3370	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3371	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3372
3373	aRespSegs[0].pvSeg = &RespHdr;
3374	aRespSegs[0].cbSeg = sizeof(RespHdr);
3375	aRespSegs[1].pvSeg = &WriteBkpt64;
3376	aRespSegs[1].cbSeg = sizeof(WriteBkpt64);
3377
3378	WriteBkpt64.u64PtrBkpt = pPktManip->u.WriteBkpt.u64PtrBkpt;
3379
3380	DBGFADDRESS BpAddr;
3381	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &BpAddr, KD_PTR_GET(pThis, pPktManip->u.WriteBkpt.u64PtrBkpt));
3382	int rc = DBGFR3BpSetInt3(pThis->Dbgc.pUVM, pThis->Dbgc.idCpu, &BpAddr,
3383	1 /iHitTrigger/, UINT64_MAX /iHitDisable/, &WriteBkpt64.u32HndBkpt);
3384	if (RT_SUCCESS(rc))
3385	{
3386	rc = dbgcBpAdd(&pThis->Dbgc, WriteBkpt64.u32HndBkpt, NULL /pszCmd/);
3387	if (RT_FAILURE(rc))
3388	DBGFR3BpClear(pThis->Dbgc.pUVM, WriteBkpt64.u32HndBkpt);
3389	}
3390	else
3391	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL;
3392
3393	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3394	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
3395	}
3396
3397
3398	/**
3399	* Processes a get context extended 64 request.
3400	*
3401	* @returns VBox status code.
3402	* @param pThis The KD context.
3403	* @param pPktManip The manipulate packet request.
3404	*/
3405	static int dbgcKdCtxPktManipulate64GetContextEx(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3406	{
3407	KDPACKETMANIPULATEHDR RespHdr;
3408	KDPACKETMANIPULATE_CONTEXTEX ContextEx;
3409	union
3410	{
3411	NTCONTEXT64 v64;
3412	NTCONTEXT32 v32;
3413	} NtCtx;
3414	RT_ZERO(RespHdr); RT_ZERO(ContextEx); RT_ZERO(NtCtx);
3415
3416	RTSGSEG aRespSegs[3];
3417	uint32_t cSegs = 2;
3418	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_GET_CONTEXT_EX;
3419	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3420	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3421	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL;
3422
3423	ContextEx.offStart = pPktManip->u.ContextEx.offStart;
3424	ContextEx.cbXfer = pPktManip->u.ContextEx.cbXfer;
3425	ContextEx.cbXfered = 0;
3426
3427	aRespSegs[0].pvSeg = &RespHdr;
3428	aRespSegs[0].cbSeg = sizeof(RespHdr);
3429	aRespSegs[1].pvSeg = &ContextEx;
3430	aRespSegs[1].cbSeg = sizeof(ContextEx);
3431
3432	int rc = VINF_SUCCESS;
3433	uint32_t cbCtx = pThis->f32Bit ? sizeof(NtCtx.v32) : sizeof(NtCtx.v64);
3434	if (pThis->f32Bit)
3435	dbgcKdCtxQueryNtCtx32(pThis, pPktManip->Hdr.idCpu, &NtCtx.v32, NTCONTEXT32_F_FULL);
3436	else
3437	dbgcKdCtxQueryNtCtx64(pThis, pPktManip->Hdr.idCpu, &NtCtx.v64, NTCONTEXT64_F_FULL);
3438	if ( RT_SUCCESS(rc)
3439	&& pPktManip->u.ContextEx.offStart < cbCtx)
3440	{
3441	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3442	ContextEx.cbXfered = RT_MIN(cbCtx - ContextEx.offStart, ContextEx.cbXfer);
3443
3444	aRespSegs[2].pvSeg = (uint8_t *)&NtCtx + ContextEx.offStart;
3445	aRespSegs[2].cbSeg = ContextEx.cbXfered;
3446	cSegs++;
3447	}
3448
3449	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3450	&aRespSegs[0], cSegs, true /fAck/);
3451	}
3452
3453
3454	/**
3455	* Processes a query memory 64 request.
3456	*
3457	* @returns VBox status code.
3458	* @param pThis The KD context.
3459	* @param pPktManip The manipulate packet request.
3460	*/
3461	static int dbgcKdCtxPktManipulate64QueryMemory(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3462	{
3463	KDPACKETMANIPULATEHDR RespHdr;
3464	KDPACKETMANIPULATE_QUERYMEMORY QueryMemory;
3465	RT_ZERO(RespHdr); RT_ZERO(QueryMemory);
3466
3467	RTSGSEG aRespSegs[2];
3468	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_QUERY_MEMORY;
3469	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3470	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3471	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3472
3473	/** @todo Need DBGF API to query protection and privilege level from guest page tables. */
3474	QueryMemory.u64GCPtr = pPktManip->u.QueryMemory.u64GCPtr;
3475	QueryMemory.u32AddrSpace = KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_SPACE_KERNEL;
3476	QueryMemory.u32Flags = KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_READ
3477	\| KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_WRITE
3478	\| KD_PACKET_MANIPULATE64_QUERY_MEMORY_ADDR_F_EXEC;
3479
3480	aRespSegs[0].pvSeg = &RespHdr;
3481	aRespSegs[0].cbSeg = sizeof(RespHdr);
3482	aRespSegs[1].pvSeg = &QueryMemory;
3483	aRespSegs[1].cbSeg = sizeof(QueryMemory);
3484
3485	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3486	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
3487	}
3488
3489
3490	/**
3491	* Processes a search memory 64 request.
3492	*
3493	* @returns VBox status code.
3494	* @param pThis The KD context.
3495	* @param pPktManip The manipulate packet request.
3496	*/
3497	static int dbgcKdCtxPktManipulate64SearchMemory(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3498	{
3499	KDPACKETMANIPULATEHDR RespHdr;
3500	KDPACKETMANIPULATE_SEARCHMEMORY SearchMemory;
3501	RT_ZERO(RespHdr); RT_ZERO(SearchMemory);
3502
3503	RTSGSEG aRespSegs[2];
3504	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_SEARCH_MEMORY;
3505	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3506	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3507	RespHdr.u32NtStatus = NTSTATUS_SUCCESS;
3508
3509	SearchMemory.u64GCPtr = pPktManip->u.SearchMemory.u64GCPtr;
3510	SearchMemory.cbSearch = pPktManip->u.SearchMemory.cbSearch;
3511	SearchMemory.cbPattern = pPktManip->u.SearchMemory.cbPattern;
3512
3513	/* Validate the pattern length and start searching. */
3514	if (pPktManip->u.SearchMemory.cbPattern < sizeof(pThis->abBody) - sizeof(*pPktManip))
3515	{
3516	DBGFADDRESS StartAddress;
3517	DBGFADDRESS HitAddress;
3518	VMCPUID idCpu = pPktManip->Hdr.idCpu;
3519	DBGFR3AddrFromFlat(pThis->Dbgc.pUVM, &StartAddress, pPktManip->u.SearchMemory.u64GCPtr);
3520
3521	/** @todo WindDbg sends CPU ID 32 sometimes, maybe that means continue search on last used CPU?. */
3522	if (idCpu >= DBGFR3CpuGetCount(pThis->Dbgc.pUVM))
3523	idCpu = pThis->Dbgc.idCpu;
3524
3525	int rc = DBGFR3MemScan(pThis->Dbgc.pUVM, idCpu, &StartAddress, pPktManip->u.SearchMemory.cbSearch, 1,
3526	&pThis->abBody[sizeof(*pPktManip)], pPktManip->u.SearchMemory.cbPattern, &HitAddress);
3527	if (RT_SUCCESS(rc))
3528	SearchMemory.u64GCPtr = HitAddress.FlatPtr;
3529	else if (rc == VERR_DBGF_MEM_NOT_FOUND)
3530	RespHdr.u32NtStatus = NTSTATUS_NOT_FOUND;
3531	else
3532	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL;
3533	}
3534	else
3535	RespHdr.u32NtStatus = NTSTATUS_BUFFER_OVERFLOW;
3536
3537	aRespSegs[0].pvSeg = &RespHdr;
3538	aRespSegs[0].cbSeg = sizeof(RespHdr);
3539	aRespSegs[1].pvSeg = &SearchMemory;
3540	aRespSegs[1].cbSeg = sizeof(SearchMemory);
3541
3542	return dbgcKdCtxPktSendSg(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3543	&aRespSegs[0], RT_ELEMENTS(aRespSegs), true /fAck/);
3544	}
3545
3546
3547	/**
3548	* Processes a cause bugcheck 64 request.
3549	*
3550	* @returns VBox status code.
3551	* @param pThis The KD context.
3552	* @param pPktManip The manipulate packet request.
3553	*
3554	* @note We abuse this request to initiate a native VBox debugger command prompt from the remote end
3555	* (There is monitor/Rcmd equivalent like with GDB unfortunately).
3556	*/
3557	static int dbgcKdCtxPktManipulate64CauseBugCheck(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3558	{
3559	RT_NOREF(pPktManip);
3560	pThis->fInVBoxDbg = true;
3561	return dbgcKdCtxDebugIoGetStrSend(pThis, pThis->Dbgc.idCpu, "VBoxDbg>", sizeof("VBoxDbg>") - 1,
3562	512 /cbResponseMax/);
3563	}
3564
3565
3566	/**
3567	* Processes a switch processor request.
3568	*
3569	* @returns VBox status code.
3570	* @param pThis The KD context.
3571	* @param pPktManip The manipulate packet request.
3572	*/
3573	static int dbgcKdCtxPktManipulate64SwitchProcessor(PKDCTX pThis, PCKDPACKETMANIPULATE64 pPktManip)
3574	{
3575	int rc = VINF_SUCCESS;
3576
3577	if (RT_UNLIKELY(pPktManip->Hdr.idCpu >= DBGFR3CpuGetCount(pThis->Dbgc.pUVM)))
3578	{
3579	KDPACKETMANIPULATEHDR RespHdr;
3580	RT_ZERO(RespHdr);
3581
3582	RespHdr.idReq = KD_PACKET_MANIPULATE_REQ_SWITCH_PROCESSOR;
3583	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3584	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3585	RespHdr.u32NtStatus = NTSTATUS_UNSUCCESSFUL; /** @todo Test this path. */
3586	rc = dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3587	&RespHdr, sizeof(RespHdr), true /fAck/);
3588	}
3589	else
3590	{
3591	pThis->Dbgc.idCpu = pPktManip->Hdr.idCpu;
3592	rc = dbgcKdCtxStateChangeSend(pThis, DBGFEVENT_HALT_DONE);
3593	}
3594
3595	return rc;
3596	}
3597
3598
3599	/**
3600	* Processes a manipulate packet.
3601	*
3602	* @returns VBox status code.
3603	* @param pThis The KD context.
3604	*/
3605	static int dbgcKdCtxPktManipulate64Process(PKDCTX pThis)
3606	{
3607	int rc = VINF_SUCCESS;
3608	PCKDPACKETMANIPULATE64 pPktManip = (PCKDPACKETMANIPULATE64)&pThis->abBody[0];
3609
3610	switch (pPktManip->Hdr.idReq)
3611	{
3612	case KD_PACKET_MANIPULATE_REQ_GET_VERSION:
3613	{
3614	rc = dbgcKdCtxPktManipulate64GetVersion(pThis, pPktManip);
3615	break;
3616	}
3617	case KD_PACKET_MANIPULATE_REQ_READ_VIRT_MEM:
3618	case KD_PACKET_MANIPULATE_REQ_READ_PHYS_MEM:
3619	{
3620	rc = dbgcKdCtxPktManipulate64ReadMem(pThis, pPktManip);
3621	break;
3622	}
3623	case KD_PACKET_MANIPULATE_REQ_WRITE_VIRT_MEM:
3624	case KD_PACKET_MANIPULATE_REQ_WRITE_PHYS_MEM:
3625	{
3626	rc = dbgcKdCtxPktManipulate64WriteMem(pThis, pPktManip);
3627	break;
3628	}
3629	case KD_PACKET_MANIPULATE_REQ_CONTINUE:
3630	{
3631	rc = dbgcKdCtxPktManipulate64Continue(pThis, pPktManip);
3632	break;
3633	}
3634	case KD_PACKET_MANIPULATE_REQ_CONTINUE2:
3635	{
3636	rc = dbgcKdCtxPktManipulate64Continue2(pThis, pPktManip);
3637	break;
3638	}
3639	case KD_PACKET_MANIPULATE_REQ_SET_CONTEXT:
3640	{
3641	rc = dbgcKdCtxPktManipulate64SetContext(pThis, pPktManip);
3642	break;
3643	}
3644	case KD_PACKET_MANIPULATE_REQ_READ_CTRL_SPACE:
3645	{
3646	rc = dbgcKdCtxPktManipulate64ReadCtrlSpace(pThis, pPktManip);
3647	break;
3648	}
3649	case KD_PACKET_MANIPULATE_REQ_WRITE_CTRL_SPACE:
3650	{
3651	rc = dbgcKdCtxPktManipulate64WriteCtrlSpace(pThis, pPktManip);
3652	break;
3653	}
3654	case KD_PACKET_MANIPULATE_REQ_RESTORE_BKPT:
3655	{
3656	rc = dbgcKdCtxPktManipulate64RestoreBkpt(pThis, pPktManip);
3657	break;
3658	}
3659	case KD_PACKET_MANIPULATE_REQ_WRITE_BKPT:
3660	{
3661	rc = dbgcKdCtxPktManipulate64WriteBkpt(pThis, pPktManip);
3662	break;
3663	}
3664	case KD_PACKET_MANIPULATE_REQ_CLEAR_ALL_INTERNAL_BKPT:
3665	/* WinDbg doesn't seem to expect an answer apart from the ACK here. */
3666	break;
3667	case KD_PACKET_MANIPULATE_REQ_GET_CONTEXT_EX:
3668	{
3669	rc = dbgcKdCtxPktManipulate64GetContextEx(pThis, pPktManip);
3670	break;
3671	}
3672	case KD_PACKET_MANIPULATE_REQ_QUERY_MEMORY:
3673	{
3674	rc = dbgcKdCtxPktManipulate64QueryMemory(pThis, pPktManip);
3675	break;
3676	}
3677	case KD_PACKET_MANIPULATE_REQ_SEARCH_MEMORY:
3678	{
3679	rc = dbgcKdCtxPktManipulate64SearchMemory(pThis, pPktManip);
3680	break;
3681	}
3682	case KD_PACKET_MANIPULATE_REQ_CAUSE_BUGCHECK:
3683	{
3684	rc = dbgcKdCtxPktManipulate64CauseBugCheck(pThis, pPktManip);
3685	break;
3686	}
3687	case KD_PACKET_MANIPULATE_REQ_SWITCH_PROCESSOR:
3688	{
3689	rc = dbgcKdCtxPktManipulate64SwitchProcessor(pThis, pPktManip);
3690	break;
3691	}
3692	case KD_PACKET_MANIPULATE_REQ_REBOOT:
3693	{
3694	rc = VMR3Reset(pThis->Dbgc.pUVM); /* Doesn't expect an answer here. */
3695	if ( RT_SUCCESS(rc)
3696	&& DBGFR3IsHalted(pThis->Dbgc.pUVM, VMCPUID_ALL))
3697	rc = DBGFR3Resume(pThis->Dbgc.pUVM, VMCPUID_ALL);
3698	break;
3699	}
3700	default:
3701	KDPACKETMANIPULATEHDR RespHdr;
3702	RT_ZERO(RespHdr);
3703
3704	RespHdr.idReq = pPktManip->Hdr.idReq;
3705	RespHdr.u16CpuLvl = pPktManip->Hdr.u16CpuLvl;
3706	RespHdr.idCpu = pPktManip->Hdr.idCpu;
3707	RespHdr.u32NtStatus = NTSTATUS_NOT_IMPLEMENTED;
3708	rc = dbgcKdCtxPktSend(pThis, KD_PACKET_HDR_SIGNATURE_DATA, KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE,
3709	&RespHdr, sizeof(RespHdr), true /fAck/);
3710	break;
3711	}
3712
3713	return rc;
3714	}
3715
3716
3717	/**
3718	* Tries to detect the guest OS running in the VM looking specifically for the Windows NT kind.
3719	*
3720	* @param pThis The KD context.
3721	*/
3722	static void dbgcKdCtxDetectGstOs(PKDCTX pThis)
3723	{
3724	pThis->pIfWinNt = NULL;
3725
3726	/* Try detecting a Windows NT guest. */
3727	char szName[64];
3728	int rc = DBGFR3OSDetect(pThis->Dbgc.pUVM, szName, sizeof(szName));
3729	if (RT_SUCCESS(rc))
3730	{
3731	pThis->pIfWinNt = (PDBGFOSIWINNT)DBGFR3OSQueryInterface(pThis->Dbgc.pUVM, DBGFOSINTERFACE_WINNT);
3732	if (pThis->pIfWinNt)
3733	LogRel(("DBGC/Kd: Detected Windows NT guest OS (%s)\n", &szName[0]));
3734	else
3735	LogRel(("DBGC/Kd: Detected guest OS is not of the Windows NT kind (%s)\n", &szName[0]));
3736	}
3737	else
3738	{
3739	LogRel(("DBGC/Kd: Unable to detect any guest operating system type, rc=%Rrc\n", rc));
3740	rc = VINF_SUCCESS; /* Try to continue nevertheless. */
3741	}
3742
3743	if (pThis->pIfWinNt)
3744	{
3745	rc = pThis->pIfWinNt->pfnQueryVersion(pThis->pIfWinNt, pThis->Dbgc.pUVM, VMMR3GetVTable(),
3746	NULL /puVersMajor/, NULL /puVersMinor/,
3747	NULL /puBuildNumber/, &pThis->f32Bit);
3748	AssertRC(rc);
3749	}
3750	else
3751	{
3752	/*
3753	* Try to detect bitness based on the current CPU mode which might fool us (32bit process running
3754	* inside of 64bit host).
3755	*/
3756	CPUMMODE enmMode = DBGCCmdHlpGetCpuMode(&pThis->Dbgc.CmdHlp);
3757	if (enmMode == CPUMMODE_PROTECTED)
3758	pThis->f32Bit = true;
3759	else if (enmMode == CPUMMODE_LONG)
3760	pThis->f32Bit = false;
3761	else
3762	LogRel(("DBGC/Kd: Heh, trying to debug real mode code with WinDbg are we? Good luck with that...\n"));
3763	}
3764	}
3765
3766
3767	/**
3768	* Processes a fully received packet.
3769	*
3770	* @returns VBox status code.
3771	* @param pThis The KD context.
3772	*/
3773	static int dbgcKdCtxPktProcess(PKDCTX pThis)
3774	{
3775	int rc = VINF_SUCCESS;
3776
3777	pThis->fBreakinRecv = false;
3778
3779	/* Verify checksum. */
3780	if (dbgcKdPktChkSumGen(&pThis->abBody[0], pThis->PktHdr.Fields.cbBody) == pThis->PktHdr.Fields.u32ChkSum)
3781	{
3782	/** @todo Check packet id. */
3783	if (pThis->PktHdr.Fields.u16SubType != KD_PACKET_HDR_SUB_TYPE_RESET)
3784	{
3785	pThis->idPktNext = pThis->PktHdr.Fields.idPacket;
3786	rc = dbgcKdCtxPktSendAck(pThis);
3787	}
3788	if (RT_SUCCESS(rc))
3789	{
3790	#ifdef LOG_ENABLED
3791	RTSGSEG Seg;
3792	Seg.pvSeg = &pThis->abBody[0];
3793	Seg.cbSeg = pThis->PktHdr.Fields.cbBody;
3794	dbgcKdPktDump(&pThis->PktHdr.Fields, &Seg, 1 /cSegs/, true /fRx/);
3795	#endif
3796
3797	switch (pThis->PktHdr.Fields.u16SubType)
3798	{
3799	case KD_PACKET_HDR_SUB_TYPE_RESET:
3800	{
3801	dbgcKdCtxDetectGstOs(pThis);
3802
3803	pThis->idPktNext = 0;
3804	rc = dbgcKdCtxPktSendReset(pThis);
3805	if (RT_SUCCESS(rc))
3806	{
3807	rc = DBGFR3Halt(pThis->Dbgc.pUVM, VMCPUID_ALL);
3808	if (rc == VWRN_DBGF_ALREADY_HALTED)
3809	rc = dbgcKdCtxStateChangeSend(pThis, DBGFEVENT_HALT_DONE);
3810	}
3811	pThis->idPktNext = KD_PACKET_HDR_ID_RESET;
3812	break;
3813	}
3814	case KD_PACKET_HDR_SUB_TYPE_STATE_MANIPULATE:
3815	{
3816	pThis->idPktNext = pThis->PktHdr.Fields.idPacket ^ 0x1;
3817	rc = dbgcKdCtxPktManipulate64Process(pThis);
3818	break;
3819	}
3820	case KD_PACKET_HDR_SUB_TYPE_ACKNOWLEDGE:
3821	case KD_PACKET_HDR_SUB_TYPE_RESEND:
3822	{
3823	/* Don't do anything. */
3824	rc = VINF_SUCCESS;
3825	break;
3826	}
3827	case KD_PACKET_HDR_SUB_TYPE_DEBUG_IO:
3828	{
3829	if (pThis->fInVBoxDbg)
3830	{
3831	pThis->idPktNext = pThis->PktHdr.Fields.idPacket ^ 0x1;
3832	/* Get the string and execute it. */
3833	PCKDPACKETDEBUGIO pPktDbgIo = (PCKDPACKETDEBUGIO)&pThis->abBody[0];
3834	if ( pPktDbgIo->u32Type == KD_PACKET_DEBUG_IO_GET_STRING
3835	&& pPktDbgIo->u.Prompt.cbReturn <= sizeof(pThis->abBody) - sizeof(*pPktDbgIo) - 1)
3836	{
3837	if (pPktDbgIo->u.Prompt.cbReturn)
3838	{
3839	/* Terminate return value. */
3840	pThis->abBody[sizeof(*pPktDbgIo) + pPktDbgIo->u.Prompt.cbReturn] = '\0';
3841
3842	const char pszCmd = (const char )&pThis->abBody[sizeof(*pPktDbgIo)];
3843	/* Filter out 'exit' which is handled here directly and exits the debug loop. */
3844	if (!strcmp(pszCmd, "exit"))
3845	pThis->fInVBoxDbg = false;
3846	else
3847	{
3848	rc = pThis->Dbgc.CmdHlp.pfnExec(&pThis->Dbgc.CmdHlp, pszCmd);
3849	if (RT_SUCCESS(rc))
3850	rc = dbgcKdCtxDebugIoGetStrSend(pThis, pThis->Dbgc.idCpu, "VBoxDbg>", sizeof("VBoxDbg>") - 1,
3851	512 /cbResponseMax/);
3852	else
3853	LogRel(("DBGC/Kd: Executing command \"%s\" failed with rc=%Rrc\n", pszCmd, rc));
3854	}
3855	}
3856	else
3857	rc = dbgcKdCtxDebugIoGetStrSend(pThis, pThis->Dbgc.idCpu, "VBoxDbg>", sizeof("VBoxDbg>") - 1,
3858	512 /cbResponseMax/);
3859	}
3860	else
3861	LogRel(("DBGC/Kd: Received invalid DEBUG_IO packet from remote end, ignoring\n"));
3862	}
3863	else
3864	LogRel(("DBGC/Kd: Received out of band DEBUG_IO packet from remote end, ignoring\n"));
3865	break;
3866	}
3867	default:
3868	rc = VERR_NOT_IMPLEMENTED;
3869	}
3870	}
3871	}
3872	else
3873	{
3874	pThis->idPktNext = pThis->PktHdr.Fields.idPacket;
3875	rc = dbgcKdCtxPktSendResend(pThis);
3876	}
3877
3878	if (pThis->fBreakinRecv)
3879	{
3880	pThis->fBreakinRecv = false;
3881	rc = DBGFR3Halt(pThis->Dbgc.pUVM, VMCPUID_ALL);
3882	if (rc == VWRN_DBGF_ALREADY_HALTED)
3883	rc = dbgcKdCtxStateChangeSend(pThis, DBGFEVENT_HALT_DONE);
3884	}
3885
3886	/* Next packet. */
3887	dbgcKdCtxPktRecvReset(pThis);
3888	return rc;
3889	}
3890
3891
3892	/**
3893	* Processes the received data based on the current state.
3894	*
3895	* @returns VBox status code.
3896	* @param pThis The KD context.
3897	*/
3898	static int dbgcKdCtxRecvDataProcess(PKDCTX pThis)
3899	{
3900	int rc = VINF_SUCCESS;
3901
3902	switch (pThis->enmState)
3903	{
3904	case KDRECVSTATE_PACKET_HDR_FIRST_BYTE:
3905	{
3906	/* Does it look like a valid packet start?. */
3907	if ( pThis->PktHdr.ab[0] == KD_PACKET_HDR_SIGNATURE_DATA_BYTE
3908	\|\| pThis->PktHdr.ab[0] == KD_PACKET_HDR_SIGNATURE_CONTROL_BYTE)
3909	{
3910	pThis->pbRecv = &pThis->PktHdr.ab[1];
3911	pThis->cbRecvLeft = sizeof(pThis->PktHdr.ab[1]);
3912	pThis->enmState = KDRECVSTATE_PACKET_HDR_SECOND_BYTE;
3913	pThis->msRecvTimeout = DBGC_KD_RECV_TIMEOUT_MS;
3914	}
3915	else if (pThis->PktHdr.ab[0] == KD_PACKET_HDR_SIGNATURE_BREAKIN_BYTE)
3916	{
3917	rc = DBGFR3Halt(pThis->Dbgc.pUVM, VMCPUID_ALL);
3918	if (rc == VWRN_DBGF_ALREADY_HALTED)
3919	rc = dbgcKdCtxStateChangeSend(pThis, DBGFEVENT_HALT_DONE);
3920	dbgcKdCtxPktRecvReset(pThis);
3921	}
3922	else
3923	dbgcKdCtxPktRecvReset(pThis); /* Reset and continue. */
3924	break;
3925	}
3926	case KDRECVSTATE_PACKET_HDR_SECOND_BYTE:
3927	{
3928	/*
3929	* If the first and second byte differ there might be a single breakin
3930	* packet byte received and this is actually the start of a new packet.
3931	*/
3932	if (pThis->PktHdr.ab[0] != pThis->PktHdr.ab[1])
3933	{
3934	if (pThis->PktHdr.ab[0] == KD_PACKET_HDR_SIGNATURE_BREAKIN_BYTE)
3935	{
3936	/* Halt the VM and rearrange the packet receiving state machine. */
3937	LogFlow(("DbgKd: Halting VM!\n"));
3938
3939	rc = DBGFR3Halt(pThis->Dbgc.pUVM, VMCPUID_ALL);
3940	pThis->PktHdr.ab[0] = pThis->PktHdr.ab[1]; /* Overwrite the first byte with the new start. */
3941	pThis->pbRecv = &pThis->PktHdr.ab[1];
3942	pThis->cbRecvLeft = sizeof(pThis->PktHdr.ab[1]);
3943	}
3944	else
3945	rc = VERR_NET_PROTOCOL_ERROR; /* Refuse talking to the remote end any further. */
3946	}
3947	else
3948	{
3949	/* Normal packet receive continues with the rest of the header. */
3950	pThis->pbRecv = &pThis->PktHdr.ab[2];
3951	pThis->cbRecvLeft = sizeof(pThis->PktHdr.Fields) - 2;
3952	pThis->enmState = KDRECVSTATE_PACKET_HDR;
3953	}
3954	break;
3955	}
3956	case KDRECVSTATE_PACKET_HDR:
3957	{
3958	if ( dbgcKdPktHdrValidate(&pThis->PktHdr.Fields)
3959	&& pThis->PktHdr.Fields.cbBody <= sizeof(pThis->abBody))
3960	{
3961	/* Start receiving the body. */
3962	if (pThis->PktHdr.Fields.cbBody)
3963	{
3964	pThis->pbRecv = &pThis->abBody[0];
3965	pThis->cbRecvLeft = pThis->PktHdr.Fields.cbBody;
3966	pThis->enmState = KDRECVSTATE_PACKET_BODY;
3967	}
3968	else /* No body means no trailer byte it looks like. */
3969	rc = dbgcKdCtxPktProcess(pThis);
3970	}
3971	else
3972	rc = VERR_NET_PROTOCOL_ERROR;
3973	break;
3974	}
3975	case KDRECVSTATE_PACKET_BODY:
3976	{
3977	pThis->enmState = KDRECVSTATE_PACKET_TRAILER;
3978	pThis->bTrailer = 0;
3979	pThis->pbRecv = &pThis->bTrailer;
3980	pThis->cbRecvLeft = sizeof(pThis->bTrailer);
3981	break;
3982	}
3983	case KDRECVSTATE_PACKET_TRAILER:
3984	{
3985	if (pThis->bTrailer == KD_PACKET_TRAILING_BYTE)
3986	rc = dbgcKdCtxPktProcess(pThis);
3987	else
3988	rc = VERR_NET_PROTOCOL_ERROR;
3989	break;
3990	}
3991	default:
3992	AssertMsgFailed(("Invalid receive state %d\n", pThis->enmState));
3993	}
3994
3995	return rc;
3996	}
3997
3998
3999	/**
4000	* Receive data and processes complete packets.
4001	*
4002	* @returns Status code.
4003	* @param pThis The KD context.
4004	*/
4005	static int dbgcKdCtxRecv(PKDCTX pThis)
4006	{
4007	int rc = VINF_SUCCESS;
4008
4009	LogFlowFunc(("pThis=%p{.cbRecvLeft=%zu}\n", pThis, pThis->cbRecvLeft));
4010
4011	if (pThis->cbRecvLeft)
4012	{
4013	size_t cbRead = 0;
4014	rc = pThis->Dbgc.pIo->pfnRead(pThis->Dbgc.pIo, pThis->pbRecv, pThis->cbRecvLeft, &cbRead);
4015	if (RT_SUCCESS(rc))
4016	{
4017	pThis->tsRecvLast = RTTimeMilliTS();
4018	pThis->cbRecvLeft -= cbRead;
4019	pThis->pbRecv += cbRead;
4020	if (!pThis->cbRecvLeft)
4021	rc = dbgcKdCtxRecvDataProcess(pThis);
4022	}
4023	}
4024
4025	LogFlowFunc(("returns rc=%Rrc\n", rc));
4026	return rc;
4027	}
4028
4029
4030	/**
4031	* Processes debugger events.
4032	*
4033	* @returns VBox status code.
4034	* @param pThis The KD context data.
4035	* @param pEvent Pointer to event data.
4036	*/
4037	static int dbgcKdCtxProcessEvent(PKDCTX pThis, PCDBGFEVENT pEvent)
4038	{
4039	/*
4040	* Process the event.
4041	*/
4042	PDBGC pDbgc = &pThis->Dbgc;
4043	pThis->Dbgc.pszScratch = &pThis->Dbgc.achInput[0];
4044	pThis->Dbgc.iArg = 0;
4045	int rc = VINF_SUCCESS;
4046	VMCPUID idCpuOld = pDbgc->idCpu;
4047	pDbgc->idCpu = pEvent->idCpu;
4048	switch (pEvent->enmType)
4049	{
4050	/*
4051	* The first part is events we have initiated with commands.
4052	*/
4053	case DBGFEVENT_HALT_DONE:
4054	{
4055	rc = dbgcKdCtxStateChangeSend(pThis, pEvent->enmType);
4056	break;
4057	}
4058
4059	/*
4060	* The second part is events which can occur at any time.
4061	*/
4062	case DBGFEVENT_FATAL_ERROR:
4063	{
4064	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbf event: Fatal error! (%s)\n",
4065	dbgcGetEventCtx(pEvent->enmCtx));
4066	if (RT_SUCCESS(rc))
4067	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
4068	break;
4069	}
4070
4071	case DBGFEVENT_BREAKPOINT:
4072	case DBGFEVENT_BREAKPOINT_IO:
4073	case DBGFEVENT_BREAKPOINT_MMIO:
4074	case DBGFEVENT_BREAKPOINT_HYPER:
4075	{
4076	rc = dbgcBpExec(pDbgc, pEvent->u.Bp.hBp);
4077	switch (rc)
4078	{
4079	case VERR_DBGC_BP_NOT_FOUND:
4080	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Unknown breakpoint %u! (%s)\n",
4081	pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
4082	break;
4083
4084	case VINF_DBGC_BP_NO_COMMAND:
4085	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Breakpoint %u! (%s)\n",
4086	pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
4087	break;
4088
4089	case VINF_BUFFER_OVERFLOW:
4090	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Breakpoint %u! Command too long to execute! (%s)\n",
4091	pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
4092	break;
4093
4094	default:
4095	break;
4096	}
4097	if (RT_SUCCESS(rc) && DBGFR3IsHalted(pDbgc->pUVM, VMCPUID_ALL))
4098	{
4099	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
4100
4101	/* Set the resume flag to ignore the breakpoint when resuming execution. */
4102	if ( RT_SUCCESS(rc)
4103	&& pEvent->enmType == DBGFEVENT_BREAKPOINT)
4104	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r eflags.rf = 1");
4105	}
4106
4107	/* Figure out the breakpoint and set the triggered flag for emulation of DR6. */
4108	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aHwBp); i++)
4109	{
4110	if (pThis->aHwBp[i].hDbgfBp == pEvent->u.Bp.hBp)
4111	{
4112	pThis->aHwBp[i].fTriggered = true;
4113	break;
4114	}
4115	}
4116
4117	rc = dbgcKdCtxStateChangeSend(pThis, pEvent->enmType);
4118	break;
4119	}
4120
4121	case DBGFEVENT_STEPPED:
4122	case DBGFEVENT_STEPPED_HYPER:
4123	{
4124	pThis->fSingleStepped = true; /* For emulation of DR6. */
4125	rc = dbgcKdCtxStateChangeSend(pThis, pEvent->enmType);
4126	break;
4127	}
4128
4129	case DBGFEVENT_ASSERTION_HYPER:
4130	{
4131	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
4132	"\ndbgf event: Hypervisor Assertion! (%s)\n"
4133	"%s"
4134	"%s"
4135	"\n",
4136	dbgcGetEventCtx(pEvent->enmCtx),
4137	pEvent->u.Assert.pszMsg1,
4138	pEvent->u.Assert.pszMsg2);
4139	if (RT_SUCCESS(rc))
4140	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
4141	break;
4142	}
4143
4144	case DBGFEVENT_DEV_STOP:
4145	{
4146	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
4147	"\n"
4148	"dbgf event: DBGFSTOP (%s)\n"
4149	"File: %s\n"
4150	"Line: %d\n"
4151	"Function: %s\n",
4152	dbgcGetEventCtx(pEvent->enmCtx),
4153	pEvent->u.Src.pszFile,
4154	pEvent->u.Src.uLine,
4155	pEvent->u.Src.pszFunction);
4156	if (RT_SUCCESS(rc) && pEvent->u.Src.pszMessage && *pEvent->u.Src.pszMessage)
4157	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
4158	"Message: %s\n",
4159	pEvent->u.Src.pszMessage);
4160	if (RT_SUCCESS(rc))
4161	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
4162	break;
4163	}
4164
4165
4166	case DBGFEVENT_INVALID_COMMAND:
4167	{
4168	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Invalid command event!\n");
4169	break;
4170	}
4171
4172	case DBGFEVENT_POWERING_OFF:
4173	{
4174	pThis->Dbgc.fReady = false;
4175	pThis->Dbgc.pIo->pfnSetReady(pThis->Dbgc.pIo, false);
4176	rc = VERR_GENERAL_FAILURE;
4177	break;
4178	}
4179
4180	default:
4181	{
4182	/*
4183	* Probably a generic event. Look it up to find its name.
4184	*/
4185	PCDBGCSXEVT pEvtDesc = dbgcEventLookup(pEvent->enmType);
4186	if (pEvtDesc)
4187	{
4188	if (pEvtDesc->enmKind == kDbgcSxEventKind_Interrupt)
4189	{
4190	Assert(pEvtDesc->pszDesc);
4191	Assert(pEvent->u.Generic.cArgs == 1);
4192	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s no %#llx! (%s)\n",
4193	pEvtDesc->pszDesc, pEvent->u.Generic.auArgs[0], pEvtDesc->pszName);
4194	}
4195	else if (pEvtDesc->fFlags & DBGCSXEVT_F_BUGCHECK)
4196	{
4197	Assert(pEvent->u.Generic.cArgs >= 5);
4198	char szDetails[512];
4199	DBGFR3FormatBugCheck(pDbgc->pUVM, szDetails, sizeof(szDetails), pEvent->u.Generic.auArgs[0],
4200	pEvent->u.Generic.auArgs[1], pEvent->u.Generic.auArgs[2],
4201	pEvent->u.Generic.auArgs[3], pEvent->u.Generic.auArgs[4]);
4202	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s %s%s!\n%s", pEvtDesc->pszName,
4203	pEvtDesc->pszDesc ? "- " : "", pEvtDesc->pszDesc ? pEvtDesc->pszDesc : "",
4204	szDetails);
4205	}
4206	else if ( (pEvtDesc->fFlags & DBGCSXEVT_F_TAKE_ARG)
4207	\|\| pEvent->u.Generic.cArgs > 1
4208	\|\| ( pEvent->u.Generic.cArgs == 1
4209	&& pEvent->u.Generic.auArgs[0] != 0))
4210	{
4211	if (pEvtDesc->pszDesc)
4212	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s - %s!",
4213	pEvtDesc->pszName, pEvtDesc->pszDesc);
4214	else
4215	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s!", pEvtDesc->pszName);
4216	if (pEvent->u.Generic.cArgs <= 1)
4217	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, " arg=%#llx\n", pEvent->u.Generic.auArgs[0]);
4218	else
4219	{
4220	for (uint32_t i = 0; i < pEvent->u.Generic.cArgs; i++)
4221	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, " args[%u]=%#llx", i, pEvent->u.Generic.auArgs[i]);
4222	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\n");
4223	}
4224	}
4225	else
4226	{
4227	if (pEvtDesc->pszDesc)
4228	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s - %s!\n",
4229	pEvtDesc->pszName, pEvtDesc->pszDesc);
4230	else
4231	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s!\n", pEvtDesc->pszName);
4232	}
4233	}
4234	else
4235	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Unknown event %d!\n", pEvent->enmType);
4236	break;
4237	}
4238	}
4239
4240	pDbgc->idCpu = idCpuOld;
4241	return rc;
4242	}
4243
4244
4245	/**
4246	* Handle a receive timeout.
4247	*
4248	* @returns VBox status code.
4249	* @param pThis Pointer to the KD context.
4250	*/
4251	static int dbgcKdCtxRecvTimeout(PKDCTX pThis)
4252	{
4253	int rc = VINF_SUCCESS;
4254
4255	LogFlowFunc(("pThis=%p\n", pThis));
4256
4257	/*
4258	* If a single breakin packet byte was received but the header is otherwise incomplete
4259	* the VM is halted and a state change will be sent in the event processing loop.
4260	*/
4261	if ( pThis->enmState == KDRECVSTATE_PACKET_HDR_SECOND_BYTE
4262	&& pThis->PktHdr.ab[0] == KD_PACKET_HDR_SIGNATURE_BREAKIN_BYTE)
4263	{
4264	LogFlow(("DbgKd: Halting VM!\n"));
4265	rc = DBGFR3Halt(pThis->Dbgc.pUVM, VMCPUID_ALL);
4266	}
4267	else /* Send a reset packet / /* @todo Figure out the semantics in this case exactly. */
4268	rc = dbgcKdCtxPktSendReset(pThis);
4269
4270	dbgcKdCtxPktRecvReset(pThis);
4271
4272	LogFlowFunc(("rc=%Rrc\n", rc));
4273	return rc;
4274	}
4275
4276
4277	/**
4278	* @copydoc DBGC::pfnOutput
4279	*/
4280	static DECLCALLBACK(int) dbgcKdOutput(void pvUser, const char pachChars, size_t cbChars)
4281	{
4282	PKDCTX pThis = (PKDCTX)pvUser;
4283
4284	return dbgcKdCtxDebugIoStrSend(pThis, pThis->Dbgc.idCpu, pachChars, cbChars);
4285	}
4286
4287
4288	/**
4289	* Run the debugger console.
4290	*
4291	* @returns VBox status code.
4292	* @param pThis Pointer to the KD context.
4293	*/
4294	static int dbgcKdRun(PKDCTX pThis)
4295	{
4296	/*
4297	* We're ready for commands now.
4298	*/
4299	pThis->Dbgc.fReady = true;
4300	pThis->Dbgc.pIo->pfnSetReady(pThis->Dbgc.pIo, true);
4301
4302	/*
4303	* Main Debugger Loop.
4304	*
4305	* This loop will either block on waiting for input or on waiting on
4306	* debug events. If we're forwarding the log we cannot wait for long
4307	* before we must flush the log.
4308	*/
4309	int rc;
4310	for (;;)
4311	{
4312	rc = VERR_SEM_OUT_OF_TURN;
4313	if (pThis->Dbgc.pUVM)
4314	rc = DBGFR3QueryWaitable(pThis->Dbgc.pUVM);
4315
4316	if (RT_SUCCESS(rc))
4317	{
4318	/*
4319	* Wait for a debug event.
4320	*/
4321	DBGFEVENT Evt;
4322	rc = DBGFR3EventWait(pThis->Dbgc.pUVM, 32, &Evt);
4323	if (RT_SUCCESS(rc))
4324	{
4325	rc = dbgcKdCtxProcessEvent(pThis, &Evt);
4326	if (RT_FAILURE(rc))
4327	break;
4328	}
4329	else if (rc != VERR_TIMEOUT)
4330	break;
4331
4332	/*
4333	* Check for input.
4334	*/
4335	if (pThis->Dbgc.pIo->pfnInput(pThis->Dbgc.pIo, 0))
4336	{
4337	rc = dbgcKdCtxRecv(pThis);
4338	if (RT_FAILURE(rc))
4339	break;
4340	}
4341	}
4342	else if (rc == VERR_SEM_OUT_OF_TURN)
4343	{
4344	/*
4345	* Wait for input.
4346	*/
4347	if (pThis->Dbgc.pIo->pfnInput(pThis->Dbgc.pIo, 1000))
4348	rc = dbgcKdCtxRecv(pThis);
4349	else if ( pThis->msRecvTimeout != RT_INDEFINITE_WAIT
4350	&& (RTTimeMilliTS() - pThis->tsRecvLast >= pThis->msRecvTimeout))
4351	rc = dbgcKdCtxRecvTimeout(pThis);
4352
4353	if (RT_FAILURE(rc))
4354	break;
4355	}
4356	else
4357	break;
4358	}
4359
4360	return rc;
4361	}
4362
4363
4364	/**
4365	* Creates a KD context instance with the given backend.
4366	*
4367	* @returns VBox status code.
4368	* @param ppKdCtx Where to store the pointer to the KD stub context instance on success.
4369	* @param pIo Pointer to the I/O callback table.
4370	* @param fFlags Flags controlling the behavior.
4371	*/
4372	static int dbgcKdCtxCreate(PPKDCTX ppKdCtx, PCDBGCIO pIo, unsigned fFlags)
4373	{
4374	/*
4375	* Validate input.
4376	*/
4377	AssertPtrReturn(pIo, VERR_INVALID_POINTER);
4378	AssertMsgReturn(!fFlags, ("%#x", fFlags), VERR_INVALID_PARAMETER);
4379
4380	/*
4381	* Allocate and initialize.
4382	*/
4383	PKDCTX pThis = (PKDCTX)RTMemAllocZ(sizeof(*pThis));
4384	if (!pThis)
4385	return VERR_NO_MEMORY;
4386
4387	dbgcInitCmdHlp(&pThis->Dbgc);
4388	/*
4389	* This is compied from the native debug console (will be used for monitor commands)
4390	* in DBGCConsole.cpp. Try to keep both functions in sync.
4391	*/
4392	pThis->Dbgc.pIo = pIo;
4393	pThis->Dbgc.pfnOutput = dbgcKdOutput;
4394	pThis->Dbgc.pvOutputUser = pThis;
4395	pThis->Dbgc.pVM = NULL;
4396	pThis->Dbgc.pUVM = NULL;
4397	pThis->Dbgc.idCpu = 0;
4398	pThis->Dbgc.hDbgAs = DBGF_AS_GLOBAL;
4399	pThis->Dbgc.pszEmulation = "CodeView/WinDbg";
4400	pThis->Dbgc.paEmulationCmds = &g_aCmdsCodeView[0];
4401	pThis->Dbgc.cEmulationCmds = g_cCmdsCodeView;
4402	pThis->Dbgc.paEmulationFuncs = &g_aFuncsCodeView[0];
4403	pThis->Dbgc.cEmulationFuncs = g_cFuncsCodeView;
4404	//pThis->Dbgc.fLog = false;
4405	pThis->Dbgc.fRegTerse = true;
4406	pThis->Dbgc.fStepTraceRegs = true;
4407	//pThis->Dbgc.cPagingHierarchyDumps = 0;
4408	//pThis->Dbgc.DisasmPos = {0};
4409	//pThis->Dbgc.SourcePos = {0};
4410	//pThis->Dbgc.DumpPos = {0};
4411	pThis->Dbgc.pLastPos = &pThis->Dbgc.DisasmPos;
4412	//pThis->Dbgc.cbDumpElement = 0;
4413	//pThis->Dbgc.cVars = 0;
4414	//pThis->Dbgc.paVars = NULL;
4415	//pThis->Dbgc.pPlugInHead = NULL;
4416	//pThis->Dbgc.pFirstBp = NULL;
4417	//pThis->Dbgc.abSearch = {0};
4418	//pThis->Dbgc.cbSearch = 0;
4419	pThis->Dbgc.cbSearchUnit = 1;
4420	pThis->Dbgc.cMaxSearchHits = 1;
4421	//pThis->Dbgc.SearchAddr = {0};
4422	//pThis->Dbgc.cbSearchRange = 0;
4423
4424	//pThis->Dbgc.uInputZero = 0;
4425	//pThis->Dbgc.iRead = 0;
4426	//pThis->Dbgc.iWrite = 0;
4427	//pThis->Dbgc.cInputLines = 0;
4428	//pThis->Dbgc.fInputOverflow = false;
4429	pThis->Dbgc.fReady = true;
4430	pThis->Dbgc.pszScratch = &pThis->Dbgc.achScratch[0];
4431	//pThis->Dbgc.iArg = 0;
4432	//pThis->Dbgc.rcOutput = 0;
4433	//pThis->Dbgc.rcCmd = 0;
4434
4435	//pThis->Dbgc.pszHistoryFile = NULL;
4436	//pThis->Dbgc.pszGlobalInitScript = NULL;
4437	//pThis->Dbgc.pszLocalInitScript = NULL;
4438
4439	dbgcEvalInit();
4440
4441	pThis->fBreakinRecv = false;
4442	pThis->fInVBoxDbg = false;
4443	pThis->idPktNext = KD_PACKET_HDR_ID_INITIAL;
4444	pThis->pIfWinNt = NULL;
4445	pThis->f32Bit = false;
4446	dbgcKdCtxPktRecvReset(pThis);
4447
4448	for (uint32_t i = 0; i < RT_ELEMENTS(pThis->aHwBp); i++)
4449	{
4450	PKDCTXHWBP pBp = &pThis->aHwBp[i];
4451	pBp->hDbgfBp = NIL_DBGFBP;
4452	}
4453
4454	dbgcKdCtxHwBpReset(pThis);
4455
4456	*ppKdCtx = pThis;
4457	return VINF_SUCCESS;
4458	}
4459
4460
4461	/**
4462	* Destroys the given KD context.
4463	*
4464	* @param pThis The KD context to destroy.
4465	*/
4466	static void dbgcKdCtxDestroy(PKDCTX pThis)
4467	{
4468	AssertPtr(pThis);
4469
4470	pThis->pIfWinNt = NULL;
4471
4472	/* Detach from the VM. */
4473	if (pThis->Dbgc.pUVM)
4474	DBGFR3Detach(pThis->Dbgc.pUVM);
4475
4476	/* Free config strings. */
4477	RTStrFree(pThis->Dbgc.pszGlobalInitScript);
4478	pThis->Dbgc.pszGlobalInitScript = NULL;
4479	RTStrFree(pThis->Dbgc.pszLocalInitScript);
4480	pThis->Dbgc.pszLocalInitScript = NULL;
4481	RTStrFree(pThis->Dbgc.pszHistoryFile);
4482	pThis->Dbgc.pszHistoryFile = NULL;
4483
4484	/* Finally, free the instance memory. */
4485	RTMemFree(pThis);
4486	}
4487
4488
4489	DECL_HIDDEN_CALLBACK(int) dbgcKdStubRunloop(PUVM pUVM, PCDBGCIO pIo, unsigned fFlags)
4490	{
4491	/*
4492	* Validate input.
4493	*/
4494	AssertPtrNullReturn(pUVM, VERR_INVALID_VM_HANDLE);
4495	PVM pVM = NULL;
4496	if (pUVM)
4497	{
4498	pVM = VMR3GetVM(pUVM);
4499	AssertPtrReturn(pVM, VERR_INVALID_VM_HANDLE);
4500	}
4501
4502	/*
4503	* Allocate and initialize instance data
4504	*/
4505	PKDCTX pThis;
4506	int rc = dbgcKdCtxCreate(&pThis, pIo, fFlags);
4507	if (RT_FAILURE(rc))
4508	return rc;
4509	if (!HMR3IsEnabled(pUVM) && !NEMR3IsEnabled(pUVM))
4510	pThis->Dbgc.hDbgAs = DBGF_AS_RC_AND_GC_GLOBAL;
4511
4512	/*
4513	* Attach to the specified VM.
4514	*/
4515	if (RT_SUCCESS(rc) && pUVM)
4516	{
4517	rc = DBGFR3Attach(pUVM);
4518	if (RT_SUCCESS(rc))
4519	{
4520	pThis->Dbgc.pVM = pVM;
4521	pThis->Dbgc.pUVM = pUVM;
4522	pThis->Dbgc.idCpu = 0;
4523	}
4524	else
4525	rc = pThis->Dbgc.CmdHlp.pfnVBoxError(&pThis->Dbgc.CmdHlp, rc, "When trying to attach to VM %p\n", pThis->Dbgc.pVM);
4526	}
4527
4528	/*
4529	* Load plugins.
4530	*/
4531	if (RT_SUCCESS(rc))
4532	{
4533	if (pVM)
4534	DBGFR3PlugInLoadAll(pThis->Dbgc.pUVM);
4535	dbgcEventInit(&pThis->Dbgc);
4536
4537	/*
4538	* Run the debugger main loop.
4539	*/
4540	rc = dbgcKdRun(pThis);
4541	dbgcEventTerm(&pThis->Dbgc);
4542	}
4543
4544	/*
4545	* Cleanup console debugger session.
4546	*/
4547	dbgcKdCtxDestroy(pThis);
4548	return rc == VERR_DBGC_QUIT ? VINF_SUCCESS : rc;
4549	}

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source: vbox/trunk/src/VBox/Debugger/DBGCRemoteKd.cpp@ 103574

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