DBGConsole.cpp@ 99844

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1	/* $Id: DBGConsole.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* DBGC - Debugger Console.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 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	/** @page pg_dbgc DBGC - The Debug Console
30	*
31	* The debugger console is an early attempt to make some interactive
32	* debugging facilities for the VirtualBox VMM. It was initially only
33	* accessible thru a telnet session in debug builds. Later it was hastily built
34	* into the VBoxDbg module with a very simple Qt wrapper around it.
35	*
36	* The current state is that it's by default shipped with all standard
37	* VirtualBox builds. The GUI component is by default accessible in all
38	* non-release builds, while release builds require extra data, environment or
39	* command line options to make it visible.
40	*
41	* Now, even if we ship it with all standard builds we would like it to remain
42	* an optional feature that can be omitted when building VirtualBox. Therefore,
43	* all external code interfacing DBGC need to be enclosed in
44	* \#ifdef VBOX_WITH_DEBUGGER blocks. This is mandatory for components that
45	* register external commands.
46	*
47	*
48	* @section sec_dbgc_op Operation
49	*
50	* The console will process commands in a manner similar to the OS/2 and Windows
51	* kernel debuggers. This means ';' is a command separator and that when
52	* possible we'll use the same command names as these two uses. As an
53	* alternative we intent to provide a set of gdb-like commands as well and let
54	* the user decide which should take precedence.
55	*
56	*
57	* @subsection sec_dbg_op_numbers Numbers
58	*
59	* Numbers are hexadecimal unless specified with a prefix indicating
60	* elsewise. Prefixes:
61	* - '0x' - hexadecimal.
62	* - '0n' - decimal
63	* - '0t' - octal.
64	* - '0y' - binary.
65	*
66	* Some of the prefixes are a bit uncommon, the reason for this that the
67	* typical binary prefix '0b' can also be a hexadecimal value since no prefix or
68	* suffix is required for such values. Ditto for '0n' and '0' for decimal and
69	* octal.
70	*
71	* The '`' can be used in the numeric value to separate parts as the user
72	* wishes. Generally, though the debugger may use it in output as thousand
73	* separator in decimal numbers and 32-bit separator in hex numbers.
74	*
75	* For historical reasons, a 'h' suffix is suffered on hex numbers. Unlike most
76	* assemblers, a leading 0 before a-f is not required with the 'h' suffix.
77	*
78	* The prefix '0i' can be used instead of '0n', as it was the early decimal
79	* prefix employed by DBGC. It's being deprecated and may be removed later.
80	*
81	*
82	* @subsection sec_dbg_op_strings Strings and Symbols
83	*
84	* The debugger will try to guess, convert or promote what the type of an
85	* argument to a command, function or operator based on the input description of
86	* the receiver. If the user wants to make it clear to the debugger that
87	* something is a string, put it inside double quotes. Symbols should use
88	* single quotes, though we're current still a bit flexible on this point.
89	*
90	* If you need to put a quote character inside the quoted text, you escape it by
91	* repating it once: echo "printf(""hello world"");"
92	*
93	*
94	* @subsection sec_dbg_op_address Addressing modes
95	*
96	* - Default is flat. For compatibility '%' also means flat.
97	* - Segmented addresses are specified selector:offset.
98	* - Physical addresses are specified using '%%'.
99	* - The default target for the addressing is the guest context, the '#'
100	* will override this and set it to the host.
101	* Note that several operations won't work on host addresses.
102	*
103	* The '%', '%%' and '#' prefixes is implemented as unary operators, while ':'
104	* is a binary operator. Operator precedence takes care of evaluation order.
105	*
106	*
107	* @subsection sec_dbg_op_c_operators C/C++ Operators
108	*
109	* Most unary and binary arithmetic, comparison, logical and bitwise C/C++
110	* operators are supported by the debugger, with the same precedence rules of
111	* course. There is one notable change made due to the unary '%' and '%%'
112	* operators, and that is that the modulo (remainder) operator is called 'mod'
113	* instead of '%'. This saves a lot of trouble separating argument.
114	*
115	* There are no assignment operators. Instead some simple global variable space
116	* is provided thru the 'set' and 'unset' commands and the unary '$' operator.
117	*
118	*
119	* @subsection sec_dbg_op_registers Registers
120	*
121	* All registers and their sub-fields exposed by the DBGF API are accessible via
122	* the '\@' operator. A few CPU register are accessible directly (as symbols)
123	* without using the '\@' operator. Hypervisor registers are accessible by
124	* prefixing the register name with a dot ('.').
125	*
126	*
127	* @subsection sec_dbg_op_commands Commands
128	*
129	* Commands names are case sensitive. By convention they are lower cased, starts
130	* with a letter but may contain digits and underscores afterwards. Operators
131	* are not allowed in the name (not even part of it), as we would risk
132	* misunderstanding it otherwise.
133	*
134	* Commands returns a status code.
135	*
136	* The '.' prefix indicates the set of external commands. External commands are
137	* command registered by VMM components.
138	*
139	*
140	* @subsection sec_dbg_op_functions Functions
141	*
142	* Functions are similar to commands, but return a variable and can only be used
143	* as part of an expression making up the argument of a command, function,
144	* operator or language statement (if we get around to implement that).
145	*
146	*
147	* @section sec_dbgc_logging Logging
148	*
149	* The idea is to be able to pass thru debug and release logs to the console
150	* if the user so wishes. This feature requires some kind of hook into the
151	* logger instance and while this was sketched it hasn't yet been implemented
152	* (dbgcProcessLog and DBGC::fLog).
153	*
154	* This feature has not materialized and probably never will.
155	*
156	*
157	* @section sec_dbgc_linking Linking and API
158	*
159	* The DBGC code is linked into the VBoxVMM module.
160	*
161	* IMachineDebugger may one day be extended with a DBGC interface so we can work
162	* with DBGC remotely without requiring TCP. Some questions about callbacks
163	* (for output) and security (you may wish to restrict users from debugging a
164	* VM) needs to be answered first though.
165	*/
166
167
168	/*********************************************************************************************************************************
169	* Header Files *
170	*********************************************************************************************************************************/
171	#define LOG_GROUP LOG_GROUP_DBGC
172	#include <VBox/dbg.h>
173	#include <VBox/vmm/cfgm.h>
174	#include <VBox/vmm/dbgf.h>
175	#include <VBox/vmm/vmapi.h> /* VMR3GetVM() */
176	#include <VBox/vmm/hm.h> /* HMR3IsEnabled */
177	#include <VBox/vmm/nem.h> /* NEMR3IsEnabled */
178	#include <VBox/err.h>
179	#include <VBox/log.h>
180
181	#include <iprt/asm.h>
182	#include <iprt/assert.h>
183	#include <iprt/file.h>
184	#include <iprt/mem.h>
185	#include <iprt/path.h>
186	#include <iprt/string.h>
187
188	#include "DBGCInternal.h"
189	#include "DBGPlugIns.h"
190
191
192	/*********************************************************************************************************************************
193	* Internal Functions *
194	*********************************************************************************************************************************/
195	static int dbgcProcessLog(PDBGC pDbgc);
196
197
198	/**
199	* Resolves a symbol (or tries to do so at least).
200	*
201	* @returns 0 on success.
202	* @returns VBox status on failure.
203	* @param pDbgc The debug console instance.
204	* @param pszSymbol The symbol name.
205	* @param enmType The result type. Specifying DBGCVAR_TYPE_GC_FAR may
206	* cause failure, avoid it.
207	* @param pResult Where to store the result.
208	*/
209	int dbgcSymbolGet(PDBGC pDbgc, const char *pszSymbol, DBGCVARTYPE enmType, PDBGCVAR pResult)
210	{
211	int rc;
212
213	/*
214	* Builtin?
215	*/
216	PCDBGCSYM pSymDesc = dbgcLookupRegisterSymbol(pDbgc, pszSymbol);
217	if (pSymDesc)
218	{
219	if (!pSymDesc->pfnGet)
220	return VERR_DBGC_PARSE_WRITEONLY_SYMBOL;
221	return pSymDesc->pfnGet(pSymDesc, &pDbgc->CmdHlp, enmType, pResult);
222	}
223
224	/*
225	* A typical register? (Guest only)
226	*/
227	static const char s_szSixLetterRegisters[] =
228	"rflags;eflags;"
229	;
230	static const char s_szThreeLetterRegisters[] =
231	"eax;rax;" "r10;" "r8d;r8w;r8b;" "cr0;" "dr0;"
232	"ebx;rbx;" "r11;" "r9d;r9w;r8b;" "dr1;"
233	"ecx;rcx;" "r12;" "cr2;" "dr2;"
234	"edx;rdx;" "r13;" "cr3;" "dr3;"
235	"edi;rdi;dil;" "r14;" "cr4;" "dr4;"
236	"esi;rsi;sil;" "r15;" "cr8;"
237	"ebp;rbp;"
238	"esp;rsp;" "dr6;"
239	"rip;eip;" "dr7;"
240	"efl;"
241	;
242	static const char s_szTwoLetterRegisters[] =
243	"ax;al;ah;" "r8;"
244	"bx;bl;bh;" "r9;"
245	"cx;cl;ch;" "cs;"
246	"dx;dl;dh;" "ds;"
247	"di;" "es;"
248	"si;" "fs;"
249	"bp;" "gs;"
250	"sp;" "ss;"
251	"ip;"
252	;
253	const char pszRegSym = pszSymbol == '.' ? pszSymbol + 1 : pszSymbol;
254	size_t const cchRegSym = strlen(pszRegSym);
255	if ( (cchRegSym == 2 && strstr(s_szTwoLetterRegisters, pszRegSym))
256	\|\| (cchRegSym == 3 && strstr(s_szThreeLetterRegisters, pszRegSym))
257	\|\| (cchRegSym == 6 && strstr(s_szSixLetterRegisters, pszRegSym)))
258	{
259	if (!strchr(pszSymbol, ';'))
260	{
261	DBGCVAR Var;
262	DBGCVAR_INIT_SYMBOL(&Var, pszSymbol);
263	rc = dbgcOpRegister(pDbgc, &Var, DBGCVAR_CAT_ANY, pResult);
264	if (RT_SUCCESS(rc))
265	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pResult, enmType, false /fConvSyms/, pResult);
266	}
267	}
268
269	/*
270	* Ask PDM.
271	*/
272	/** @todo resolve symbols using PDM. */
273
274	/*
275	* Ask the debug info manager.
276	*/
277	RTDBGSYMBOL Symbol;
278	rc = DBGFR3AsSymbolByName(pDbgc->pUVM, pDbgc->hDbgAs, pszSymbol, &Symbol, NULL);
279	if (RT_SUCCESS(rc))
280	{
281	/*
282	* Default return is a flat gc address.
283	*/
284	DBGCVAR_INIT_GC_FLAT(pResult, Symbol.Value);
285	if (Symbol.cb)
286	DBGCVAR_SET_RANGE(pResult, DBGCVAR_RANGE_BYTES, Symbol.cb);
287
288	switch (enmType)
289	{
290	/* nothing to do. */
291	case DBGCVAR_TYPE_GC_FLAT:
292	case DBGCVAR_TYPE_ANY:
293	return VINF_SUCCESS;
294
295	/* impossible at the moment. */
296	case DBGCVAR_TYPE_GC_FAR:
297	return VERR_DBGC_PARSE_CONVERSION_FAILED;
298
299	/* simply make it numeric. */
300	case DBGCVAR_TYPE_NUMBER:
301	pResult->enmType = DBGCVAR_TYPE_NUMBER;
302	pResult->u.u64Number = Symbol.Value;
303	return VINF_SUCCESS;
304
305	/* cast it. */
306	case DBGCVAR_TYPE_GC_PHYS:
307	case DBGCVAR_TYPE_HC_FLAT:
308	case DBGCVAR_TYPE_HC_PHYS:
309	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pResult, enmType, false /fConvSyms/, pResult);
310
311	default:
312	AssertMsgFailed(("Internal error enmType=%d\n", enmType));
313	return VERR_INVALID_PARAMETER;
314	}
315	}
316
317	return VERR_DBGC_PARSE_NOT_IMPLEMENTED;
318	}
319
320
321	/**
322	* Process all commands currently in the buffer.
323	*
324	* @returns VBox status code. Any error indicates the termination of the console session.
325	* @param pDbgc Debugger console instance data.
326	* @param fNoExecute Indicates that no commands should actually be executed.
327	*/
328	static int dbgcProcessCommands(PDBGC pDbgc, bool fNoExecute)
329	{
330	/** @todo Replace this with a sh/ksh/csh/rexx like toplevel language that
331	* allows doing function, loops, if, cases, and such. */
332	int rc = VINF_SUCCESS;
333	while (pDbgc->cInputLines)
334	{
335	/*
336	* Empty the log buffer if we're hooking the log.
337	*/
338	if (pDbgc->fLog)
339	{
340	rc = dbgcProcessLog(pDbgc);
341	if (RT_FAILURE(rc))
342	break;
343	}
344
345	if (pDbgc->iRead == pDbgc->iWrite)
346	{
347	AssertMsgFailed(("The input buffer is empty while cInputLines=%d!\n", pDbgc->cInputLines));
348	pDbgc->cInputLines = 0;
349	return 0;
350	}
351
352	/*
353	* Copy the command to the parse buffer.
354	*/
355	char chQuote = 0;
356	char ch;
357	char *psz = &pDbgc->achInput[pDbgc->iRead];
358	char *pszTrg = &pDbgc->achScratch[0];
359	AssertCompile(sizeof(pDbgc->achScratch) > sizeof(pDbgc->achInput));
360	while ((ch = *psz++) != '\0')
361	{
362	/* ';' and '\n' are termination characters, except for when they are
363	inside quotes. So, track quoting. */
364	if (ch == '"' \|\| ch == '\'')
365	chQuote = chQuote == ch ? 0 : chQuote == 0 ? ch : chQuote;
366	else if ((ch == ';' \|\| ch == '\n') && chQuote == 0)
367	break;
368
369	*pszTrg = ch;
370
371	if (psz == &pDbgc->achInput[sizeof(pDbgc->achInput)])
372	psz = &pDbgc->achInput[0];
373
374	/** @todo r=bird: off by one issue here? */
375	if (psz == &pDbgc->achInput[pDbgc->iWrite])
376	{
377	AssertMsgFailed(("The buffer contains no commands while cInputLines=%d!\n", pDbgc->cInputLines));
378	pDbgc->cInputLines = 0;
379	return 0;
380	}
381
382	pszTrg++;
383	}
384	*pszTrg = '\0';
385
386	/*
387	* Advance the buffer.
388	*/
389	pDbgc->iRead = psz - &pDbgc->achInput[0];
390	if (ch == '\n')
391	pDbgc->cInputLines--;
392
393	/*
394	* Parse and execute this command.
395	*/
396	pDbgc->pszScratch = pszTrg + 1;
397	pDbgc->iArg = 0;
398	rc = dbgcEvalCommand(pDbgc, &pDbgc->achScratch[0], pszTrg - &pDbgc->achScratch[0], fNoExecute);
399	if ( rc == VERR_DBGC_QUIT
400	\|\| rc == VWRN_DBGC_CMD_PENDING)
401	break;
402	rc = VINF_SUCCESS; /* ignore other statuses */
403	}
404
405	return rc;
406	}
407
408
409	/**
410	* Handle input buffer overflow.
411	*
412	* Will read any available input looking for a '\n' to reset the buffer on.
413	*
414	* @returns VBox status code.
415	* @param pDbgc Debugger console instance data.
416	*/
417	static int dbgcInputOverflow(PDBGC pDbgc)
418	{
419	/*
420	* Assert overflow status and reset the input buffer.
421	*/
422	if (!pDbgc->fInputOverflow)
423	{
424	pDbgc->fInputOverflow = true;
425	pDbgc->iRead = pDbgc->iWrite = 0;
426	pDbgc->cInputLines = 0;
427	pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "Input overflow!!\n");
428	}
429
430	/*
431	* Eat input till no more or there is a '\n'.
432	* When finding a '\n' we'll continue normal processing.
433	*/
434	while (pDbgc->pIo->pfnInput(pDbgc->pIo, 0))
435	{
436	size_t cbRead;
437	int rc = pDbgc->pIo->pfnRead(pDbgc->pIo, &pDbgc->achInput[0], sizeof(pDbgc->achInput) - 1, &cbRead);
438	if (RT_FAILURE(rc))
439	return rc;
440	char psz = (char )memchr(&pDbgc->achInput[0], '\n', cbRead);
441	if (psz)
442	{
443	pDbgc->fInputOverflow = false;
444	pDbgc->iRead = psz - &pDbgc->achInput[0] + 1;
445	pDbgc->iWrite = (unsigned)cbRead;
446	pDbgc->cInputLines = 0;
447	break;
448	}
449	}
450
451	return 0;
452	}
453
454
455	/**
456	* Read input and do some preprocessing.
457	*
458	* @returns VBox status code.
459	* In addition to the iWrite and achInput, cInputLines is maintained.
460	* In case of an input overflow the fInputOverflow flag will be set.
461	* @param pDbgc Debugger console instance data.
462	*/
463	static int dbgcInputRead(PDBGC pDbgc)
464	{
465	/*
466	* We have ready input.
467	* Read it till we don't have any or we have a full input buffer.
468	*/
469	int rc = 0;
470	do
471	{
472	/*
473	* More available buffer space?
474	*/
475	size_t cbLeft;
476	if (pDbgc->iWrite > pDbgc->iRead)
477	cbLeft = sizeof(pDbgc->achInput) - pDbgc->iWrite - (pDbgc->iRead == 0);
478	else
479	cbLeft = pDbgc->iRead - pDbgc->iWrite - 1;
480	if (!cbLeft)
481	{
482	/* overflow? */
483	if (!pDbgc->cInputLines)
484	rc = dbgcInputOverflow(pDbgc);
485	break;
486	}
487
488	/*
489	* Read one char and interpret it.
490	*/
491	char achRead[128];
492	size_t cbRead;
493	rc = pDbgc->pIo->pfnRead(pDbgc->pIo, &achRead[0], RT_MIN(cbLeft, sizeof(achRead)), &cbRead);
494	if (RT_FAILURE(rc))
495	return rc;
496	char *psz = &achRead[0];
497	while (cbRead-- > 0)
498	{
499	char ch = *psz++;
500	switch (ch)
501	{
502	/*
503	* Ignore.
504	*/
505	case '\0':
506	case '\r':
507	case '\a':
508	break;
509
510	/*
511	* Backspace.
512	*/
513	case '\b':
514	Log2(("DBGC: backspace\n"));
515	if (pDbgc->iRead != pDbgc->iWrite)
516	{
517	unsigned iWriteUndo = pDbgc->iWrite;
518	if (pDbgc->iWrite)
519	pDbgc->iWrite--;
520	else
521	pDbgc->iWrite = sizeof(pDbgc->achInput) - 1;
522
523	if (pDbgc->achInput[pDbgc->iWrite] == '\n')
524	pDbgc->iWrite = iWriteUndo;
525	}
526	break;
527
528	/*
529	* Add char to buffer.
530	*/
531	case '\t':
532	case '\n':
533	case ';':
534	switch (ch)
535	{
536	case '\t': ch = ' '; break;
537	case '\n': pDbgc->cInputLines++; break;
538	}
539	RT_FALL_THRU();
540	default:
541	Log2(("DBGC: ch=%02x\n", (unsigned char)ch));
542	pDbgc->achInput[pDbgc->iWrite] = ch;
543	if (++pDbgc->iWrite >= sizeof(pDbgc->achInput))
544	pDbgc->iWrite = 0;
545	break;
546	}
547	}
548
549	/* Terminate it to make it easier to read in the debugger. */
550	pDbgc->achInput[pDbgc->iWrite] = '\0';
551	} while (pDbgc->pIo->pfnInput(pDbgc->pIo, 0));
552
553	return rc;
554	}
555
556
557	/**
558	* Reads input, parses it and executes commands on '\n'.
559	*
560	* @returns VBox status code.
561	* @param pDbgc Debugger console instance data.
562	* @param fNoExecute Indicates that no commands should actually be executed.
563	*/
564	int dbgcProcessInput(PDBGC pDbgc, bool fNoExecute)
565	{
566	/*
567	* We know there's input ready, so let's read it first.
568	*/
569	int rc = dbgcInputRead(pDbgc);
570	if (RT_FAILURE(rc))
571	return rc;
572
573	/*
574	* Now execute any ready commands.
575	*/
576	if (pDbgc->cInputLines)
577	{
578	pDbgc->pIo->pfnSetReady(pDbgc->pIo, false);
579	pDbgc->fReady = false;
580	rc = dbgcProcessCommands(pDbgc, fNoExecute);
581	if (RT_SUCCESS(rc) && rc != VWRN_DBGC_CMD_PENDING)
582	pDbgc->fReady = true;
583
584	if ( RT_SUCCESS(rc)
585	&& pDbgc->iRead == pDbgc->iWrite
586	&& pDbgc->fReady)
587	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
588
589	if ( RT_SUCCESS(rc)
590	&& pDbgc->fReady)
591	pDbgc->pIo->pfnSetReady(pDbgc->pIo, true);
592	}
593	/*
594	* else - we have incomplete line, so leave it in the buffer and
595	* wait for more input.
596	*
597	* Windows telnet client is in "character at a time" mode by
598	* default and putty sends eol as a separate packet that will be
599	* most likely read separately from the command line it
600	* terminates.
601	*/
602
603	return rc;
604	}
605
606
607	/**
608	* Gets the event context identifier string.
609	* @returns Read only string.
610	* @param enmCtx The context.
611	*/
612	DECLHIDDEN(const char *) dbgcGetEventCtx(DBGFEVENTCTX enmCtx)
613	{
614	switch (enmCtx)
615	{
616	case DBGFEVENTCTX_RAW: return "raw";
617	case DBGFEVENTCTX_REM: return "rem";
618	case DBGFEVENTCTX_HM: return "hwaccl";
619	case DBGFEVENTCTX_HYPER: return "hyper";
620	case DBGFEVENTCTX_OTHER: return "other";
621
622	case DBGFEVENTCTX_INVALID: return "!Invalid Event Ctx!";
623	default:
624	AssertMsgFailed(("enmCtx=%d\n", enmCtx));
625	return "!Unknown Event Ctx!";
626	}
627	}
628
629
630	/**
631	* Looks up a generic debug event.
632	*
633	* @returns Pointer to DBGCSXEVT structure if found, otherwise NULL.
634	* @param enmType The possibly generic event to find the descriptor for.
635	*/
636	DECLHIDDEN(PCDBGCSXEVT) dbgcEventLookup(DBGFEVENTTYPE enmType)
637	{
638	uint32_t i = g_cDbgcSxEvents;
639	while (i-- > 0)
640	if (g_aDbgcSxEvents[i].enmType == enmType)
641	return &g_aDbgcSxEvents[i];
642	return NULL;
643	}
644
645
646	/**
647	* Processes debugger events.
648	*
649	* @returns VBox status code.
650	* @param pDbgc DBGC Instance data.
651	* @param pEvent Pointer to event data.
652	*/
653	static int dbgcProcessEvent(PDBGC pDbgc, PCDBGFEVENT pEvent)
654	{
655	/*
656	* Flush log first.
657	*/
658	if (pDbgc->fLog)
659	{
660	int rc = dbgcProcessLog(pDbgc);
661	if (RT_FAILURE(rc))
662	return rc;
663	}
664
665	/*
666	* Process the event.
667	*/
668	pDbgc->pszScratch = &pDbgc->achInput[0];
669	pDbgc->iArg = 0;
670	bool fPrintPrompt = true;
671	int rc = VINF_SUCCESS;
672	VMCPUID const idCpuSaved = pDbgc->idCpu;
673	switch (pEvent->enmType)
674	{
675	/*
676	* The first part is events we have initiated with commands.
677	*/
678	case DBGFEVENT_HALT_DONE:
679	{
680	/** @todo add option to suppress this on CPUs that aren't selected (like
681	* fRegTerse). */
682	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: CPU %u has halted! (%s)\n",
683	pEvent->idCpu, pEvent->idCpu, dbgcGetEventCtx(pEvent->enmCtx));
684	if (RT_SUCCESS(rc))
685	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
686	break;
687	}
688
689
690	/*
691	* The second part is events which can occur at any time.
692	*/
693	case DBGFEVENT_FATAL_ERROR:
694	{
695	pDbgc->idCpu = pEvent->idCpu;
696	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbf event/%u: Fatal error! (%s)\n",
697	pEvent->idCpu, dbgcGetEventCtx(pEvent->enmCtx));
698	if (RT_SUCCESS(rc))
699	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
700	break;
701	}
702
703	case DBGFEVENT_BREAKPOINT:
704	case DBGFEVENT_BREAKPOINT_IO:
705	case DBGFEVENT_BREAKPOINT_MMIO:
706	case DBGFEVENT_BREAKPOINT_HYPER:
707	{
708	pDbgc->idCpu = pEvent->idCpu;
709	rc = dbgcBpExec(pDbgc, pEvent->u.Bp.hBp);
710	switch (rc)
711	{
712	case VERR_DBGC_BP_NOT_FOUND:
713	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: Unknown breakpoint %u! (%s)\n",
714	pEvent->idCpu, pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
715	break;
716
717	case VINF_DBGC_BP_NO_COMMAND:
718	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: Breakpoint %u! (%s)\n",
719	pEvent->idCpu, pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
720	break;
721
722	case VINF_BUFFER_OVERFLOW:
723	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: Breakpoint %u! Command too long to execute! (%s)\n",
724	pEvent->idCpu, pEvent->u.Bp.hBp, dbgcGetEventCtx(pEvent->enmCtx));
725	break;
726
727	default:
728	break;
729	}
730	if (RT_SUCCESS(rc) && DBGFR3IsHalted(pDbgc->pUVM, pEvent->idCpu))
731	{
732	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
733
734	/* Set the resume flag to ignore the breakpoint when resuming execution. */
735	if ( RT_SUCCESS(rc)
736	&& pEvent->enmType == DBGFEVENT_BREAKPOINT)
737	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r eflags.rf = 1");
738	}
739	else
740	pDbgc->idCpu = idCpuSaved;
741	break;
742	}
743
744	case DBGFEVENT_STEPPED:
745	case DBGFEVENT_STEPPED_HYPER:
746	{
747	if (!pDbgc->cMultiStepsLeft \|\| pEvent->idCpu != idCpuSaved)
748	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: Single step! (%s)\n",
749	pEvent->idCpu, dbgcGetEventCtx(pEvent->enmCtx));
750	else
751	pDbgc->cMultiStepsLeft -= 1;
752	if (RT_SUCCESS(rc))
753	{
754	if (pDbgc->fStepTraceRegs)
755	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
756	else
757	{
758	char szCmd[80];
759	if (DBGFR3CpuIsIn64BitCode(pDbgc->pUVM, pDbgc->idCpu))
760	rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "u %016VR{rip} L 0");
761	else if (DBGFR3CpuIsInV86Code(pDbgc->pUVM, pDbgc->idCpu))
762	rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "uv86 %04VR{cs}:%08VR{eip} L 0");
763	else
764	rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "u %04VR{cs}:%08VR{eip} L 0");
765	if (RT_SUCCESS(rc))
766	rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "%s", szCmd);
767	}
768	}
769
770	/* If multi-stepping, take the next step: */
771	if (pDbgc->cMultiStepsLeft > 0 && pEvent->idCpu == idCpuSaved)
772	{
773	int rc2 = DBGFR3StepEx(pDbgc->pUVM, pDbgc->idCpu, DBGF_STEP_F_INTO, NULL, NULL, 0, pDbgc->uMultiStepStrideLength);
774	if (RT_SUCCESS(rc2))
775	fPrintPrompt = false;
776	else
777	DBGCCmdHlpFailRc(&pDbgc->CmdHlp, pDbgc->pMultiStepCmd, rc2, "DBGFR3StepEx(,,DBGF_STEP_F_INTO,) failed");
778	}
779	else
780	pDbgc->idCpu = pEvent->idCpu;
781	break;
782	}
783
784	case DBGFEVENT_ASSERTION_HYPER:
785	{
786	pDbgc->idCpu = pEvent->idCpu;
787	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
788	"\ndbgf event/%u: Hypervisor Assertion! (%s)\n"
789	"%s"
790	"%s"
791	"\n",
792	pEvent->idCpu,
793	dbgcGetEventCtx(pEvent->enmCtx),
794	pEvent->u.Assert.pszMsg1,
795	pEvent->u.Assert.pszMsg2);
796	if (RT_SUCCESS(rc))
797	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
798	break;
799	}
800
801	case DBGFEVENT_DEV_STOP:
802	{
803	pDbgc->idCpu = pEvent->idCpu;
804	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
805	"\n"
806	"dbgf event/%u: DBGFSTOP (%s)\n"
807	"File: %s\n"
808	"Line: %d\n"
809	"Function: %s\n",
810	pEvent->idCpu,
811	dbgcGetEventCtx(pEvent->enmCtx),
812	pEvent->u.Src.pszFile,
813	pEvent->u.Src.uLine,
814	pEvent->u.Src.pszFunction);
815	if (RT_SUCCESS(rc) && pEvent->u.Src.pszMessage && *pEvent->u.Src.pszMessage)
816	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
817	"Message: %s\n",
818	pEvent->u.Src.pszMessage);
819	if (RT_SUCCESS(rc))
820	rc = DBGCCmdHlpRegPrintf(&pDbgc->CmdHlp, pEvent->idCpu, -1, pDbgc->fRegTerse);
821	break;
822	}
823
824
825	case DBGFEVENT_INVALID_COMMAND:
826	{
827	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Invalid command event!\n");
828	break;
829	}
830
831	case DBGFEVENT_POWERING_OFF:
832	{
833	pDbgc->fReady = false;
834	pDbgc->pIo->pfnSetReady(pDbgc->pIo, false);
835	pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\nVM is powering off!\n");
836	fPrintPrompt = false;
837	rc = VERR_GENERAL_FAILURE;
838	break;
839	}
840
841
842	default:
843	{
844	/*
845	* Probably a generic event. Look it up to find its name.
846	*/
847	PCDBGCSXEVT pEvtDesc = dbgcEventLookup(pEvent->enmType);
848	if (pEvtDesc)
849	{
850	if (pEvtDesc->enmKind == kDbgcSxEventKind_Interrupt)
851	{
852	Assert(pEvtDesc->pszDesc);
853	Assert(pEvent->u.Generic.cArgs == 1);
854	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s no %#llx! (%s)\n",
855	pEvent->idCpu, pEvtDesc->pszDesc, pEvent->u.Generic.auArgs[0], pEvtDesc->pszName);
856	}
857	else if (pEvtDesc->fFlags & DBGCSXEVT_F_BUGCHECK)
858	{
859	Assert(pEvent->u.Generic.cArgs >= 5);
860	char szDetails[512];
861	DBGFR3FormatBugCheck(pDbgc->pUVM, szDetails, sizeof(szDetails), pEvent->u.Generic.auArgs[0],
862	pEvent->u.Generic.auArgs[1], pEvent->u.Generic.auArgs[2],
863	pEvent->u.Generic.auArgs[3], pEvent->u.Generic.auArgs[4]);
864	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s %s%s!\n%s", pEvent->idCpu,
865	pEvtDesc->pszName, pEvtDesc->pszDesc ? "- " : "",
866	pEvtDesc->pszDesc ? pEvtDesc->pszDesc : "", szDetails);
867	}
868	else if ( (pEvtDesc->fFlags & DBGCSXEVT_F_TAKE_ARG)
869	\|\| pEvent->u.Generic.cArgs > 1
870	\|\| ( pEvent->u.Generic.cArgs == 1
871	&& pEvent->u.Generic.auArgs[0] != 0))
872	{
873	if (pEvtDesc->pszDesc)
874	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s - %s!",
875	pEvent->idCpu, pEvtDesc->pszName, pEvtDesc->pszDesc);
876	else
877	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s!",
878	pEvent->idCpu, pEvtDesc->pszName);
879	if (pEvent->u.Generic.cArgs <= 1)
880	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, " arg=%#llx\n", pEvent->u.Generic.auArgs[0]);
881	else
882	{
883	for (uint32_t i = 0; i < pEvent->u.Generic.cArgs; i++)
884	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, " args[%u]=%#llx", i, pEvent->u.Generic.auArgs[i]);
885	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\n");
886	}
887	}
888	else
889	{
890	if (pEvtDesc->pszDesc)
891	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s - %s!\n",
892	pEvent->idCpu, pEvtDesc->pszName, pEvtDesc->pszDesc);
893	else
894	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event/%u: %s!\n",
895	pEvent->idCpu, pEvtDesc->pszName);
896	}
897	}
898	else
899	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Unknown event %d on CPU %u!\n",
900	pEvent->enmType, pEvent->idCpu);
901	break;
902	}
903	}
904
905	/*
906	* Prompt, anyone?
907	*/
908	if (fPrintPrompt && RT_SUCCESS(rc))
909	{
910	/** @todo add CPU indicator to the prompt if an SMP VM? */
911	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
912	pDbgc->fReady = true;
913	if (RT_SUCCESS(rc))
914	pDbgc->pIo->pfnSetReady(pDbgc->pIo, true);
915	pDbgc->cMultiStepsLeft = 0;
916	}
917
918	return rc;
919	}
920
921
922	/**
923	* Prints any log lines from the log buffer.
924	*
925	* The caller must not call function this unless pDbgc->fLog is set.
926	*
927	* @returns VBox status code. (output related)
928	* @param pDbgc Debugger console instance data.
929	*/
930	static int dbgcProcessLog(PDBGC pDbgc)
931	{
932	/** @todo */
933	NOREF(pDbgc);
934	return 0;
935	}
936
937	/** @callback_method_impl{FNRTDBGCFGLOG} */
938	static DECLCALLBACK(void) dbgcDbgCfgLogCallback(RTDBGCFG hDbgCfg, uint32_t iLevel, const char pszMsg, void pvUser)
939	{
940	/** @todo Add symbol noise setting. */
941	NOREF(hDbgCfg); NOREF(iLevel);
942	PDBGC pDbgc = (PDBGC)pvUser;
943	pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "%s", pszMsg);
944	}
945
946
947	/**
948	* Run the debugger console.
949	*
950	* @returns VBox status code.
951	* @param pDbgc Pointer to the debugger console instance data.
952	*/
953	int dbgcRun(PDBGC pDbgc)
954	{
955	/*
956	* We're ready for commands now.
957	*/
958	pDbgc->fReady = true;
959	pDbgc->pIo->pfnSetReady(pDbgc->pIo, true);
960
961	/*
962	* Main Debugger Loop.
963	*
964	* This loop will either block on waiting for input or on waiting on
965	* debug events. If we're forwarding the log we cannot wait for long
966	* before we must flush the log.
967	*/
968	int rc;
969	for (;;)
970	{
971	rc = VERR_SEM_OUT_OF_TURN;
972	if (pDbgc->pUVM)
973	rc = DBGFR3QueryWaitable(pDbgc->pUVM);
974
975	if (RT_SUCCESS(rc))
976	{
977	/*
978	* Wait for a debug event.
979	*/
980	DBGFEVENT Event;
981	rc = DBGFR3EventWait(pDbgc->pUVM, pDbgc->fLog ? 1 : 32, &Event);
982	if (RT_SUCCESS(rc))
983	{
984	rc = dbgcProcessEvent(pDbgc, &Event);
985	if (RT_FAILURE(rc))
986	break;
987	}
988	else if (rc != VERR_TIMEOUT)
989	break;
990
991	/*
992	* Check for input.
993	*/
994	if (pDbgc->pIo->pfnInput(pDbgc->pIo, 0))
995	{
996	rc = dbgcProcessInput(pDbgc, false /* fNoExecute */);
997	if (RT_FAILURE(rc))
998	break;
999	}
1000	}
1001	else if (rc == VERR_SEM_OUT_OF_TURN)
1002	{
1003	/*
1004	* Wait for input. If Logging is enabled we'll only wait very briefly.
1005	*/
1006	if (pDbgc->pIo->pfnInput(pDbgc->pIo, pDbgc->fLog ? 1 : 1000))
1007	{
1008	rc = dbgcProcessInput(pDbgc, false /* fNoExecute */);
1009	if (RT_FAILURE(rc))
1010	break;
1011	}
1012	}
1013	else
1014	break;
1015
1016	/*
1017	* Forward log output.
1018	*/
1019	if (pDbgc->fLog)
1020	{
1021	rc = dbgcProcessLog(pDbgc);
1022	if (RT_FAILURE(rc))
1023	break;
1024	}
1025	}
1026
1027	return rc;
1028	}
1029
1030
1031	/**
1032	* Run the init scripts, if present.
1033	*
1034	* @param pDbgc The console instance.
1035	*/
1036	static void dbgcRunInitScripts(PDBGC pDbgc)
1037	{
1038	/*
1039	* Do the global one, if it exists.
1040	*/
1041	if ( pDbgc->pszGlobalInitScript
1042	&& *pDbgc->pszGlobalInitScript != '\0'
1043	&& RTFileExists(pDbgc->pszGlobalInitScript))
1044	dbgcEvalScript(pDbgc, pDbgc->pszGlobalInitScript, true /fAnnounce/);
1045
1046	/*
1047	* Then do the local one, if it exists.
1048	*/
1049	if ( pDbgc->pszLocalInitScript
1050	&& *pDbgc->pszLocalInitScript != '\0'
1051	&& RTFileExists(pDbgc->pszLocalInitScript))
1052	dbgcEvalScript(pDbgc, pDbgc->pszLocalInitScript, true /fAnnounce/);
1053	}
1054
1055
1056	/**
1057	* Reads the CFGM configuration of the DBGC.
1058	*
1059	* Popuplates the PDBGC::pszHistoryFile, PDBGC::pszGlobalInitScript and
1060	* PDBGC::pszLocalInitScript members.
1061	*
1062	* @returns VBox status code.
1063	* @param pDbgc The console instance.
1064	* @param pUVM The user mode VM handle.
1065	*/
1066	static int dbgcReadConfig(PDBGC pDbgc, PUVM pUVM)
1067	{
1068	/*
1069	* Get and validate the configuration node.
1070	*/
1071	PCFGMNODE pNode = CFGMR3GetChild(CFGMR3GetRootU(pUVM), "DBGC");
1072	int rc = CFGMR3ValidateConfig(pNode, "/DBGC/",
1073	"Enabled\|"
1074	"HistoryFile\|"
1075	"LocalInitScript\|"
1076	"GlobalInitScript\|",
1077	"*", "DBGC", 0);
1078	AssertRCReturn(rc, rc);
1079
1080	/*
1081	* Query the values.
1082	*/
1083	char szHomeDefault[RTPATH_MAX];
1084	rc = RTPathUserHome(szHomeDefault, sizeof(szHomeDefault) - 32);
1085	AssertLogRelRCReturn(rc, rc);
1086	size_t cchHome = strlen(szHomeDefault);
1087
1088	/** @cfgm{/DBGC/HistoryFile, string, ${HOME}/.vboxdbgc-history}
1089	* The command history file of the VBox debugger. */
1090	rc = RTPathAppend(szHomeDefault, sizeof(szHomeDefault), ".vboxdbgc-history");
1091	AssertLogRelRCReturn(rc, rc);
1092
1093	char szPath[RTPATH_MAX];
1094	rc = CFGMR3QueryStringDef(pNode, "HistoryFile", szPath, sizeof(szPath), szHomeDefault);
1095	AssertLogRelRCReturn(rc, rc);
1096
1097	pDbgc->pszHistoryFile = RTStrDup(szPath);
1098	AssertReturn(pDbgc->pszHistoryFile, VERR_NO_STR_MEMORY);
1099
1100	/** @cfgm{/DBGC/GlobalInitFile, string, ${HOME}/.vboxdbgc-init}
1101	* The global init script of the VBox debugger. */
1102	szHomeDefault[cchHome] = '\0';
1103	rc = RTPathAppend(szHomeDefault, sizeof(szHomeDefault), ".vboxdbgc-init");
1104	AssertLogRelRCReturn(rc, rc);
1105
1106	rc = CFGMR3QueryStringDef(pNode, "GlobalInitScript", szPath, sizeof(szPath), szHomeDefault);
1107	AssertLogRelRCReturn(rc, rc);
1108
1109	pDbgc->pszGlobalInitScript = RTStrDup(szPath);
1110	AssertReturn(pDbgc->pszGlobalInitScript, VERR_NO_STR_MEMORY);
1111
1112	/** @cfgm{/DBGC/LocalInitFile, string, none}
1113	* The VM local init script of the VBox debugger. */
1114	rc = CFGMR3QueryString(pNode, "LocalInitScript", szPath, sizeof(szPath));
1115	if (RT_SUCCESS(rc))
1116	{
1117	pDbgc->pszLocalInitScript = RTStrDup(szPath);
1118	AssertReturn(pDbgc->pszLocalInitScript, VERR_NO_STR_MEMORY);
1119	}
1120	else
1121	{
1122	AssertLogRelReturn(rc == VERR_CFGM_VALUE_NOT_FOUND \|\| rc == VERR_CFGM_NO_PARENT, rc);
1123	pDbgc->pszLocalInitScript = NULL;
1124	}
1125
1126	return VINF_SUCCESS;
1127	}
1128
1129
1130	/**
1131	* @copydoc DBGC::pfnOutput
1132	*/
1133	static DECLCALLBACK(int) dbgcOutputNative(void pvUser, const char pachChars, size_t cbChars)
1134	{
1135	PDBGC pDbgc = (PDBGC)pvUser;
1136	return pDbgc->pIo->pfnWrite(pDbgc->pIo, pachChars, cbChars, NULL /pcbWritten/);
1137	}
1138
1139
1140	/**
1141	* Creates a a new instance.
1142	*
1143	* @returns VBox status code.
1144	* @param ppDbgc Where to store the pointer to the instance data.
1145	* @param pIo Pointer to the I/O callback table.
1146	* @param fFlags The flags.
1147	*/
1148	int dbgcCreate(PDBGC *ppDbgc, PCDBGCIO pIo, unsigned fFlags)
1149	{
1150	/*
1151	* Validate input.
1152	*/
1153	AssertPtrReturn(pIo, VERR_INVALID_POINTER);
1154	AssertMsgReturn(!fFlags, ("%#x", fFlags), VERR_INVALID_PARAMETER);
1155
1156	/*
1157	* Allocate and initialize.
1158	*/
1159	PDBGC pDbgc = (PDBGC)RTMemAllocZ(sizeof(*pDbgc));
1160	if (!pDbgc)
1161	return VERR_NO_MEMORY;
1162
1163	dbgcInitCmdHlp(pDbgc);
1164	pDbgc->pIo = pIo;
1165	pDbgc->pfnOutput = dbgcOutputNative;
1166	pDbgc->pvOutputUser = pDbgc;
1167	pDbgc->pVM = NULL;
1168	pDbgc->pUVM = NULL;
1169	pDbgc->idCpu = 0;
1170	pDbgc->hDbgAs = DBGF_AS_GLOBAL;
1171	pDbgc->pszEmulation = "CodeView/WinDbg";
1172	pDbgc->paEmulationCmds = &g_aCmdsCodeView[0];
1173	pDbgc->cEmulationCmds = g_cCmdsCodeView;
1174	pDbgc->paEmulationFuncs = &g_aFuncsCodeView[0];
1175	pDbgc->cEmulationFuncs = g_cFuncsCodeView;
1176	//pDbgc->fLog = false;
1177	pDbgc->fRegTerse = true;
1178	pDbgc->fStepTraceRegs = true;
1179	//pDbgc->cPagingHierarchyDumps = 0;
1180	//pDbgc->DisasmPos = {0};
1181	//pDbgc->SourcePos = {0};
1182	//pDbgc->DumpPos = {0};
1183	pDbgc->pLastPos = &pDbgc->DisasmPos;
1184	//pDbgc->cbDumpElement = 0;
1185	//pDbgc->cVars = 0;
1186	//pDbgc->paVars = NULL;
1187	//pDbgc->pPlugInHead = NULL;
1188	//pDbgc->pFirstBp = NULL;
1189	RTListInit(&pDbgc->LstTraceFlowMods);
1190	//pDbgc->abSearch = {0};
1191	//pDbgc->cbSearch = 0;
1192	pDbgc->cbSearchUnit = 1;
1193	pDbgc->cMaxSearchHits = 1;
1194	//pDbgc->SearchAddr = {0};
1195	//pDbgc->cbSearchRange = 0;
1196
1197	//pDbgc->uInputZero = 0;
1198	//pDbgc->iRead = 0;
1199	//pDbgc->iWrite = 0;
1200	//pDbgc->cInputLines = 0;
1201	//pDbgc->fInputOverflow = false;
1202	pDbgc->fReady = true;
1203	pDbgc->pszScratch = &pDbgc->achScratch[0];
1204	//pDbgc->iArg = 0;
1205	//pDbgc->rcOutput = 0;
1206	//pDbgc->rcCmd = 0;
1207
1208	//pDbgc->pszHistoryFile = NULL;
1209	//pDbgc->pszGlobalInitScript = NULL;
1210	//pDbgc->pszLocalInitScript = NULL;
1211
1212	dbgcEvalInit();
1213
1214	*ppDbgc = pDbgc;
1215	return VINF_SUCCESS;
1216	}
1217
1218	/**
1219	* Destroys a DBGC instance created by dbgcCreate.
1220	*
1221	* @param pDbgc Pointer to the debugger console instance data.
1222	*/
1223	void dbgcDestroy(PDBGC pDbgc)
1224	{
1225	AssertPtr(pDbgc);
1226
1227	/* Disable log hook. */
1228	if (pDbgc->fLog)
1229	{
1230
1231	}
1232
1233	/* Detach from the VM. */
1234	if (pDbgc->pUVM)
1235	DBGFR3Detach(pDbgc->pUVM);
1236
1237	/* Free config strings. */
1238	RTStrFree(pDbgc->pszGlobalInitScript);
1239	pDbgc->pszGlobalInitScript = NULL;
1240	RTStrFree(pDbgc->pszLocalInitScript);
1241	pDbgc->pszLocalInitScript = NULL;
1242	RTStrFree(pDbgc->pszHistoryFile);
1243	pDbgc->pszHistoryFile = NULL;
1244
1245	/* Finally, free the instance memory. */
1246	RTMemFree(pDbgc);
1247	}
1248
1249
1250	/**
1251	* Make a console instance.
1252	*
1253	* This will not return until either an 'exit' command is issued or a error code
1254	* indicating connection loss is encountered.
1255	*
1256	* @returns VINF_SUCCESS if console termination caused by the 'exit' command.
1257	* @returns The VBox status code causing the console termination.
1258	*
1259	* @param pUVM The user mode VM handle.
1260	* @param pIo Pointer to the I/O callback structure. This must contain
1261	* a full set of function pointers to service the console.
1262	* @param fFlags Reserved, must be zero.
1263	* @remarks A forced termination of the console is easiest done by forcing the
1264	* callbacks to return fatal failures.
1265	*/
1266	DBGDECL(int) DBGCCreate(PUVM pUVM, PCDBGCIO pIo, unsigned fFlags)
1267	{
1268	/*
1269	* Validate input.
1270	*/
1271	AssertPtrNullReturn(pUVM, VERR_INVALID_VM_HANDLE);
1272	PVM pVM = NULL;
1273	if (pUVM)
1274	{
1275	pVM = VMR3GetVM(pUVM);
1276	AssertPtrReturn(pVM, VERR_INVALID_VM_HANDLE);
1277	}
1278
1279	/*
1280	* Allocate and initialize instance data
1281	*/
1282	PDBGC pDbgc;
1283	int rc = dbgcCreate(&pDbgc, pIo, fFlags);
1284	if (RT_FAILURE(rc))
1285	return rc;
1286	if (!HMR3IsEnabled(pUVM) && !NEMR3IsEnabled(pUVM))
1287	pDbgc->hDbgAs = DBGF_AS_RC_AND_GC_GLOBAL;
1288
1289	/*
1290	* Print welcome message.
1291	*/
1292	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
1293	"Welcome to the VirtualBox Debugger!\n");
1294
1295	/*
1296	* Attach to the specified VM.
1297	*/
1298	if (RT_SUCCESS(rc) && pUVM)
1299	{
1300	rc = dbgcReadConfig(pDbgc, pUVM);
1301	if (RT_SUCCESS(rc))
1302	{
1303	rc = DBGFR3Attach(pUVM);
1304	if (RT_SUCCESS(rc))
1305	{
1306	pDbgc->pVM = pVM;
1307	pDbgc->pUVM = pUVM;
1308	pDbgc->idCpu = 0;
1309	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
1310	"Current VM is %08x, CPU #%u\n" /** @todo get and print the VM name! */
1311	, pDbgc->pVM, pDbgc->idCpu);
1312	}
1313	else
1314	rc = pDbgc->CmdHlp.pfnVBoxError(&pDbgc->CmdHlp, rc, "When trying to attach to VM %p\n", pDbgc->pVM);
1315	}
1316	else
1317	rc = pDbgc->CmdHlp.pfnVBoxError(&pDbgc->CmdHlp, rc, "Error reading configuration\n");
1318	}
1319
1320	/*
1321	* Load plugins.
1322	*/
1323	if (RT_SUCCESS(rc))
1324	{
1325	if (pVM)
1326	DBGFR3PlugInLoadAll(pDbgc->pUVM);
1327	dbgcEventInit(pDbgc);
1328	dbgcRunInitScripts(pDbgc);
1329
1330	rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
1331	if (RT_SUCCESS(rc))
1332	{
1333	/*
1334	* Set debug config log callback.
1335	*/
1336	RTDBGCFG hDbgCfg = DBGFR3AsGetConfig(pUVM);
1337	if ( hDbgCfg != NIL_RTDBGCFG
1338	&& RTDbgCfgRetain(hDbgCfg) != UINT32_MAX)
1339	{
1340	int rc2 = RTDbgCfgSetLogCallback(hDbgCfg, dbgcDbgCfgLogCallback, pDbgc);
1341	if (RT_FAILURE(rc2))
1342	{
1343	hDbgCfg = NIL_RTDBGCFG;
1344	RTDbgCfgRelease(hDbgCfg);
1345	}
1346	}
1347	else
1348	hDbgCfg = NIL_RTDBGCFG;
1349
1350
1351	/*
1352	* Run the debugger main loop.
1353	*/
1354	rc = dbgcRun(pDbgc);
1355
1356
1357	/*
1358	* Remove debug config log callback.
1359	*/
1360	if (hDbgCfg != NIL_RTDBGCFG)
1361	{
1362	RTDbgCfgSetLogCallback(hDbgCfg, NULL, NULL);
1363	RTDbgCfgRelease(hDbgCfg);
1364	}
1365	}
1366	dbgcEventTerm(pDbgc);
1367	}
1368	else
1369	pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\nDBGCCreate error: %Rrc\n", rc);
1370
1371
1372	/*
1373	* Cleanup console debugger session.
1374	*/
1375	dbgcDestroy(pDbgc);
1376	return rc == VERR_DBGC_QUIT ? VINF_SUCCESS : rc;
1377	}
1378

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source: vbox/trunk/src/VBox/Debugger/DBGConsole.cpp@ 99844

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