VirtualBox

source: vbox/trunk/src/VBox/Debugger/DBGConsole.cpp@ 72372

Last change on this file since 72372 was 72268, checked in by vboxsync, 7 years ago

DBGC: Only use DBGF_AS_RC_AND_GC_GLOBAL for !HM and !NEM.
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1/* $Id: DBGConsole.cpp 72268 2018-05-20 23:29:26Z vboxsync $ */
2/** @file
3 * DBGC - Debugger Console.
4 */
5
6/*
7 * Copyright (C) 2006-2017 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/** @page pg_dbgc DBGC - The Debug Console
20 *
21 * The debugger console is an early attempt to make some interactive
22 * debugging facilities for the VirtualBox VMM. It was initially only
23 * accessible thru a telnet session in debug builds. Later it was hastily built
24 * into the VBoxDbg module with a very simple Qt wrapper around it.
25 *
26 * The current state is that it's by default shipped with all standard
27 * VirtualBox builds. The GUI component is by default accessible in all
28 * non-release builds, while release builds require extra data, environment or
29 * command line options to make it visible.
30 *
31 * Now, even if we ship it with all standard builds we would like it to remain
32 * an optional feature that can be omitted when building VirtualBox. Therefore,
33 * all external code interfacing DBGC need to be enclosed in
34 * \#ifdef VBOX_WITH_DEBUGGER blocks. This is mandatory for components that
35 * register external commands.
36 *
37 *
38 * @section sec_dbgc_op Operation
39 *
40 * The console will process commands in a manner similar to the OS/2 and Windows
41 * kernel debuggers. This means ';' is a command separator and that when
42 * possible we'll use the same command names as these two uses. As an
43 * alternative we intent to provide a set of gdb-like commands as well and let
44 * the user decide which should take precedence.
45 *
46 *
47 * @subsection sec_dbg_op_numbers Numbers
48 *
49 * Numbers are hexadecimal unless specified with a prefix indicating
50 * elsewise. Prefixes:
51 * - '0x' - hexadecimal.
52 * - '0n' - decimal
53 * - '0t' - octal.
54 * - '0y' - binary.
55 *
56 * Some of the prefixes are a bit uncommon, the reason for this that the
57 * typical binary prefix '0b' can also be a hexadecimal value since no prefix or
58 * suffix is required for such values. Ditto for '0n' and '0' for decimal and
59 * octal.
60 *
61 * The '`' can be used in the numeric value to separate parts as the user
62 * wishes. Generally, though the debugger may use it in output as thousand
63 * separator in decimal numbers and 32-bit separator in hex numbers.
64 *
65 * For historical reasons, a 'h' suffix is suffered on hex numbers. Unlike most
66 * assemblers, a leading 0 before a-f is not required with the 'h' suffix.
67 *
68 * The prefix '0i' can be used instead of '0n', as it was the early decimal
69 * prefix employed by DBGC. It's being deprecated and may be removed later.
70 *
71 *
72 * @subsection sec_dbg_op_strings Strings and Symbols
73 *
74 * The debugger will try to guess, convert or promote what the type of an
75 * argument to a command, function or operator based on the input description of
76 * the receiver. If the user wants to make it clear to the debugger that
77 * something is a string, put it inside double quotes. Symbols should use
78 * single quotes, though we're current still a bit flexible on this point.
79 *
80 * If you need to put a quote character inside the quoted text, you escape it by
81 * repating it once: echo "printf(""hello world"");"
82 *
83 *
84 * @subsection sec_dbg_op_address Addressing modes
85 *
86 * - Default is flat. For compatibility '%' also means flat.
87 * - Segmented addresses are specified selector:offset.
88 * - Physical addresses are specified using '%%'.
89 * - The default target for the addressing is the guest context, the '#'
90 * will override this and set it to the host.
91 * Note that several operations won't work on host addresses.
92 *
93 * The '%', '%%' and '#' prefixes is implemented as unary operators, while ':'
94 * is a binary operator. Operator precedence takes care of evaluation order.
95 *
96 *
97 * @subsection sec_dbg_op_c_operators C/C++ Operators
98 *
99 * Most unary and binary arithmetic, comparison, logical and bitwise C/C++
100 * operators are supported by the debugger, with the same precedence rules of
101 * course. There is one notable change made due to the unary '%' and '%%'
102 * operators, and that is that the modulo (remainder) operator is called 'mod'
103 * instead of '%'. This saves a lot of trouble separating argument.
104 *
105 * There are no assignment operators. Instead some simple global variable space
106 * is provided thru the 'set' and 'unset' commands and the unary '$' operator.
107 *
108 *
109 * @subsection sec_dbg_op_registers Registers
110 *
111 * All registers and their sub-fields exposed by the DBGF API are accessible via
112 * the '\@' operator. A few CPU register are accessible directly (as symbols)
113 * without using the '\@' operator. Hypervisor registers are accessible by
114 * prefixing the register name with a dot ('.').
115 *
116 *
117 * @subsection sec_dbg_op_commands Commands
118 *
119 * Commands names are case sensitive. By convention they are lower cased, starts
120 * with a letter but may contain digits and underscores afterwards. Operators
121 * are not allowed in the name (not even part of it), as we would risk
122 * misunderstanding it otherwise.
123 *
124 * Commands returns a status code.
125 *
126 * The '.' prefix indicates the set of external commands. External commands are
127 * command registered by VMM components.
128 *
129 *
130 * @subsection sec_dbg_op_functions Functions
131 *
132 * Functions are similar to commands, but return a variable and can only be used
133 * as part of an expression making up the argument of a command, function,
134 * operator or language statement (if we get around to implement that).
135 *
136 *
137 * @section sec_dbgc_logging Logging
138 *
139 * The idea is to be able to pass thru debug and release logs to the console
140 * if the user so wishes. This feature requires some kind of hook into the
141 * logger instance and while this was sketched it hasn't yet been implemented
142 * (dbgcProcessLog and DBGC::fLog).
143 *
144 * This feature has not materialized and probably never will.
145 *
146 *
147 * @section sec_dbgc_linking Linking and API
148 *
149 * The DBGC code is linked into the VBoxVMM module.
150 *
151 * IMachineDebugger may one day be extended with a DBGC interface so we can work
152 * with DBGC remotely without requiring TCP. Some questions about callbacks
153 * (for output) and security (you may wish to restrict users from debugging a
154 * VM) needs to be answered first though.
155 */
156
157
158/*********************************************************************************************************************************
159* Header Files *
160*********************************************************************************************************************************/
161#define LOG_GROUP LOG_GROUP_DBGC
162#include <VBox/dbg.h>
163#include <VBox/vmm/cfgm.h>
164#include <VBox/vmm/dbgf.h>
165#include <VBox/vmm/vmapi.h> /* VMR3GetVM() */
166#include <VBox/vmm/hm.h> /* HMR3IsEnabled */
167#include <VBox/vmm/nem.h> /* NEMR3IsEnabled */
168#include <VBox/err.h>
169#include <VBox/log.h>
170
171#include <iprt/asm.h>
172#include <iprt/assert.h>
173#include <iprt/file.h>
174#include <iprt/mem.h>
175#include <iprt/path.h>
176#include <iprt/string.h>
177
178#include "DBGCInternal.h"
179#include "DBGPlugIns.h"
180
181
182/*********************************************************************************************************************************
183* Internal Functions *
184*********************************************************************************************************************************/
185static int dbgcProcessLog(PDBGC pDbgc);
186
187
188/**
189 * Resolves a symbol (or tries to do so at least).
190 *
191 * @returns 0 on success.
192 * @returns VBox status on failure.
193 * @param pDbgc The debug console instance.
194 * @param pszSymbol The symbol name.
195 * @param enmType The result type. Specifying DBGCVAR_TYPE_GC_FAR may
196 * cause failure, avoid it.
197 * @param pResult Where to store the result.
198 */
199int dbgcSymbolGet(PDBGC pDbgc, const char *pszSymbol, DBGCVARTYPE enmType, PDBGCVAR pResult)
200{
201 int rc;
202
203 /*
204 * Builtin?
205 */
206 PCDBGCSYM pSymDesc = dbgcLookupRegisterSymbol(pDbgc, pszSymbol);
207 if (pSymDesc)
208 {
209 if (!pSymDesc->pfnGet)
210 return VERR_DBGC_PARSE_WRITEONLY_SYMBOL;
211 return pSymDesc->pfnGet(pSymDesc, &pDbgc->CmdHlp, enmType, pResult);
212 }
213
214 /*
215 * A typical register? (Guest only)
216 */
217 static const char s_szSixLetterRegisters[] =
218 "rflags;eflags;"
219 ;
220 static const char s_szThreeLetterRegisters[] =
221 "eax;rax;" "r10;" "r8d;r8w;r8b;" "cr0;" "dr0;"
222 "ebx;rbx;" "r11;" "r9d;r9w;r8b;" "dr1;"
223 "ecx;rcx;" "r12;" "cr2;" "dr2;"
224 "edx;rdx;" "r13;" "cr3;" "dr3;"
225 "edi;rdi;dil;" "r14;" "cr4;" "dr4;"
226 "esi;rsi;sil;" "r15;" "cr8;"
227 "ebp;rbp;"
228 "esp;rsp;" "dr6;"
229 "rip;eip;" "dr7;"
230 "efl;"
231 ;
232 static const char s_szTwoLetterRegisters[] =
233 "ax;al;ah;" "r8;"
234 "bx;bl;bh;" "r9;"
235 "cx;cl;ch;" "cs;"
236 "dx;dl;dh;" "ds;"
237 "di;" "es;"
238 "si;" "fs;"
239 "bp;" "gs;"
240 "sp;" "ss;"
241 "ip;"
242 ;
243 const char *pszRegSym = *pszSymbol == '.' ? pszSymbol + 1 : pszSymbol;
244 size_t const cchRegSym = strlen(pszRegSym);
245 if ( (cchRegSym == 2 && strstr(s_szTwoLetterRegisters, pszRegSym))
246 || (cchRegSym == 3 && strstr(s_szThreeLetterRegisters, pszRegSym))
247 || (cchRegSym == 6 && strstr(s_szSixLetterRegisters, pszRegSym)))
248 {
249 if (!strchr(pszSymbol, ';'))
250 {
251 DBGCVAR Var;
252 DBGCVAR_INIT_SYMBOL(&Var, pszSymbol);
253 rc = dbgcOpRegister(pDbgc, &Var, DBGCVAR_CAT_ANY, pResult);
254 if (RT_SUCCESS(rc))
255 return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pResult, enmType, false /*fConvSyms*/, pResult);
256 }
257 }
258
259 /*
260 * Ask PDM.
261 */
262 /** @todo resolve symbols using PDM. */
263
264 /*
265 * Ask the debug info manager.
266 */
267 RTDBGSYMBOL Symbol;
268 rc = DBGFR3AsSymbolByName(pDbgc->pUVM, pDbgc->hDbgAs, pszSymbol, &Symbol, NULL);
269 if (RT_SUCCESS(rc))
270 {
271 /*
272 * Default return is a flat gc address.
273 */
274 DBGCVAR_INIT_GC_FLAT(pResult, Symbol.Value);
275 if (Symbol.cb)
276 DBGCVAR_SET_RANGE(pResult, DBGCVAR_RANGE_BYTES, Symbol.cb);
277
278 switch (enmType)
279 {
280 /* nothing to do. */
281 case DBGCVAR_TYPE_GC_FLAT:
282 case DBGCVAR_TYPE_ANY:
283 return VINF_SUCCESS;
284
285 /* impossible at the moment. */
286 case DBGCVAR_TYPE_GC_FAR:
287 return VERR_DBGC_PARSE_CONVERSION_FAILED;
288
289 /* simply make it numeric. */
290 case DBGCVAR_TYPE_NUMBER:
291 pResult->enmType = DBGCVAR_TYPE_NUMBER;
292 pResult->u.u64Number = Symbol.Value;
293 return VINF_SUCCESS;
294
295 /* cast it. */
296 case DBGCVAR_TYPE_GC_PHYS:
297 case DBGCVAR_TYPE_HC_FLAT:
298 case DBGCVAR_TYPE_HC_PHYS:
299 return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pResult, enmType, false /*fConvSyms*/, pResult);
300
301 default:
302 AssertMsgFailed(("Internal error enmType=%d\n", enmType));
303 return VERR_INVALID_PARAMETER;
304 }
305 }
306
307 return VERR_DBGC_PARSE_NOT_IMPLEMENTED;
308}
309
310
311/**
312 * Process all commands currently in the buffer.
313 *
314 * @returns VBox status code. Any error indicates the termination of the console session.
315 * @param pDbgc Debugger console instance data.
316 * @param fNoExecute Indicates that no commands should actually be executed.
317 */
318static int dbgcProcessCommands(PDBGC pDbgc, bool fNoExecute)
319{
320 /** @todo Replace this with a sh/ksh/csh/rexx like toplevel language that
321 * allows doing function, loops, if, cases, and such. */
322 int rc = VINF_SUCCESS;
323 while (pDbgc->cInputLines)
324 {
325 /*
326 * Empty the log buffer if we're hooking the log.
327 */
328 if (pDbgc->fLog)
329 {
330 rc = dbgcProcessLog(pDbgc);
331 if (RT_FAILURE(rc))
332 break;
333 }
334
335 if (pDbgc->iRead == pDbgc->iWrite)
336 {
337 AssertMsgFailed(("The input buffer is empty while cInputLines=%d!\n", pDbgc->cInputLines));
338 pDbgc->cInputLines = 0;
339 return 0;
340 }
341
342 /*
343 * Copy the command to the parse buffer.
344 */
345 char ch;
346 char *psz = &pDbgc->achInput[pDbgc->iRead];
347 char *pszTrg = &pDbgc->achScratch[0];
348 while ((*pszTrg = ch = *psz++) != ';' && ch != '\n' )
349 {
350 if (psz == &pDbgc->achInput[sizeof(pDbgc->achInput)])
351 psz = &pDbgc->achInput[0];
352
353 if (psz == &pDbgc->achInput[pDbgc->iWrite])
354 {
355 AssertMsgFailed(("The buffer contains no commands while cInputLines=%d!\n", pDbgc->cInputLines));
356 pDbgc->cInputLines = 0;
357 return 0;
358 }
359
360 pszTrg++;
361 }
362 *pszTrg = '\0';
363
364 /*
365 * Advance the buffer.
366 */
367 pDbgc->iRead = psz - &pDbgc->achInput[0];
368 if (ch == '\n')
369 pDbgc->cInputLines--;
370
371 /*
372 * Parse and execute this command.
373 */
374 pDbgc->pszScratch = pszTrg + 1;
375 pDbgc->iArg = 0;
376 rc = dbgcEvalCommand(pDbgc, &pDbgc->achScratch[0], pszTrg - &pDbgc->achScratch[0] - 1, fNoExecute);
377 if ( rc == VERR_DBGC_QUIT
378 || rc == VWRN_DBGC_CMD_PENDING)
379 break;
380 rc = VINF_SUCCESS; /* ignore other statuses */
381 }
382
383 return rc;
384}
385
386
387/**
388 * Handle input buffer overflow.
389 *
390 * Will read any available input looking for a '\n' to reset the buffer on.
391 *
392 * @returns VBox status code.
393 * @param pDbgc Debugger console instance data.
394 */
395static int dbgcInputOverflow(PDBGC pDbgc)
396{
397 /*
398 * Assert overflow status and reset the input buffer.
399 */
400 if (!pDbgc->fInputOverflow)
401 {
402 pDbgc->fInputOverflow = true;
403 pDbgc->iRead = pDbgc->iWrite = 0;
404 pDbgc->cInputLines = 0;
405 pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "Input overflow!!\n");
406 }
407
408 /*
409 * Eat input till no more or there is a '\n'.
410 * When finding a '\n' we'll continue normal processing.
411 */
412 while (pDbgc->pBack->pfnInput(pDbgc->pBack, 0))
413 {
414 size_t cbRead;
415 int rc = pDbgc->pBack->pfnRead(pDbgc->pBack, &pDbgc->achInput[0], sizeof(pDbgc->achInput) - 1, &cbRead);
416 if (RT_FAILURE(rc))
417 return rc;
418 char *psz = (char *)memchr(&pDbgc->achInput[0], '\n', cbRead);
419 if (psz)
420 {
421 pDbgc->fInputOverflow = false;
422 pDbgc->iRead = psz - &pDbgc->achInput[0] + 1;
423 pDbgc->iWrite = (unsigned)cbRead;
424 pDbgc->cInputLines = 0;
425 break;
426 }
427 }
428
429 return 0;
430}
431
432
433/**
434 * Read input and do some preprocessing.
435 *
436 * @returns VBox status code.
437 * In addition to the iWrite and achInput, cInputLines is maintained.
438 * In case of an input overflow the fInputOverflow flag will be set.
439 * @param pDbgc Debugger console instance data.
440 */
441static int dbgcInputRead(PDBGC pDbgc)
442{
443 /*
444 * We have ready input.
445 * Read it till we don't have any or we have a full input buffer.
446 */
447 int rc = 0;
448 do
449 {
450 /*
451 * More available buffer space?
452 */
453 size_t cbLeft;
454 if (pDbgc->iWrite > pDbgc->iRead)
455 cbLeft = sizeof(pDbgc->achInput) - pDbgc->iWrite - (pDbgc->iRead == 0);
456 else
457 cbLeft = pDbgc->iRead - pDbgc->iWrite - 1;
458 if (!cbLeft)
459 {
460 /* overflow? */
461 if (!pDbgc->cInputLines)
462 rc = dbgcInputOverflow(pDbgc);
463 break;
464 }
465
466 /*
467 * Read one char and interpret it.
468 */
469 char achRead[128];
470 size_t cbRead;
471 rc = pDbgc->pBack->pfnRead(pDbgc->pBack, &achRead[0], RT_MIN(cbLeft, sizeof(achRead)), &cbRead);
472 if (RT_FAILURE(rc))
473 return rc;
474 char *psz = &achRead[0];
475 while (cbRead-- > 0)
476 {
477 char ch = *psz++;
478 switch (ch)
479 {
480 /*
481 * Ignore.
482 */
483 case '\0':
484 case '\r':
485 case '\a':
486 break;
487
488 /*
489 * Backspace.
490 */
491 case '\b':
492 Log2(("DBGC: backspace\n"));
493 if (pDbgc->iRead != pDbgc->iWrite)
494 {
495 unsigned iWriteUndo = pDbgc->iWrite;
496 if (pDbgc->iWrite)
497 pDbgc->iWrite--;
498 else
499 pDbgc->iWrite = sizeof(pDbgc->achInput) - 1;
500
501 if (pDbgc->achInput[pDbgc->iWrite] == '\n')
502 pDbgc->iWrite = iWriteUndo;
503 }
504 break;
505
506 /*
507 * Add char to buffer.
508 */
509 case '\t':
510 case '\n':
511 case ';':
512 switch (ch)
513 {
514 case '\t': ch = ' '; break;
515 case '\n': pDbgc->cInputLines++; break;
516 }
517 default:
518 Log2(("DBGC: ch=%02x\n", (unsigned char)ch));
519 pDbgc->achInput[pDbgc->iWrite] = ch;
520 if (++pDbgc->iWrite >= sizeof(pDbgc->achInput))
521 pDbgc->iWrite = 0;
522 break;
523 }
524 }
525
526 /* Terminate it to make it easier to read in the debugger. */
527 pDbgc->achInput[pDbgc->iWrite] = '\0';
528 } while (pDbgc->pBack->pfnInput(pDbgc->pBack, 0));
529
530 return rc;
531}
532
533
534/**
535 * Reads input, parses it and executes commands on '\n'.
536 *
537 * @returns VBox status code.
538 * @param pDbgc Debugger console instance data.
539 * @param fNoExecute Indicates that no commands should actually be executed.
540 */
541int dbgcProcessInput(PDBGC pDbgc, bool fNoExecute)
542{
543 /*
544 * We know there's input ready, so let's read it first.
545 */
546 int rc = dbgcInputRead(pDbgc);
547 if (RT_FAILURE(rc))
548 return rc;
549
550 /*
551 * Now execute any ready commands.
552 */
553 if (pDbgc->cInputLines)
554 {
555 pDbgc->pBack->pfnSetReady(pDbgc->pBack, false);
556 pDbgc->fReady = false;
557 rc = dbgcProcessCommands(pDbgc, fNoExecute);
558 if (RT_SUCCESS(rc) && rc != VWRN_DBGC_CMD_PENDING)
559 pDbgc->fReady = true;
560
561 if ( RT_SUCCESS(rc)
562 && pDbgc->iRead == pDbgc->iWrite
563 && pDbgc->fReady)
564 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
565
566 if ( RT_SUCCESS(rc)
567 && pDbgc->fReady)
568 pDbgc->pBack->pfnSetReady(pDbgc->pBack, true);
569 }
570 /*
571 * else - we have incomplete line, so leave it in the buffer and
572 * wait for more input.
573 *
574 * Windows telnet client is in "character at a time" mode by
575 * default and putty sends eol as a separate packet that will be
576 * most likely read separately from the command line it
577 * terminates.
578 */
579
580 return rc;
581}
582
583
584/**
585 * Gets the event context identifier string.
586 * @returns Read only string.
587 * @param enmCtx The context.
588 */
589static const char *dbgcGetEventCtx(DBGFEVENTCTX enmCtx)
590{
591 switch (enmCtx)
592 {
593 case DBGFEVENTCTX_RAW: return "raw";
594 case DBGFEVENTCTX_REM: return "rem";
595 case DBGFEVENTCTX_HM: return "hwaccl";
596 case DBGFEVENTCTX_HYPER: return "hyper";
597 case DBGFEVENTCTX_OTHER: return "other";
598
599 case DBGFEVENTCTX_INVALID: return "!Invalid Event Ctx!";
600 default:
601 AssertMsgFailed(("enmCtx=%d\n", enmCtx));
602 return "!Unknown Event Ctx!";
603 }
604}
605
606
607/**
608 * Looks up a generic debug event.
609 *
610 * @returns Pointer to DBGCSXEVT structure if found, otherwise NULL.
611 * @param enmType The possibly generic event to find the descriptor for.
612 */
613static PCDBGCSXEVT dbgcEventLookup(DBGFEVENTTYPE enmType)
614{
615 uint32_t i = g_cDbgcSxEvents;
616 while (i-- > 0)
617 if (g_aDbgcSxEvents[i].enmType == enmType)
618 return &g_aDbgcSxEvents[i];
619 return NULL;
620}
621
622
623/**
624 * Processes debugger events.
625 *
626 * @returns VBox status code.
627 * @param pDbgc DBGC Instance data.
628 * @param pEvent Pointer to event data.
629 */
630static int dbgcProcessEvent(PDBGC pDbgc, PCDBGFEVENT pEvent)
631{
632 /*
633 * Flush log first.
634 */
635 if (pDbgc->fLog)
636 {
637 int rc = dbgcProcessLog(pDbgc);
638 if (RT_FAILURE(rc))
639 return rc;
640 }
641
642 /*
643 * Process the event.
644 */
645 pDbgc->pszScratch = &pDbgc->achInput[0];
646 pDbgc->iArg = 0;
647 bool fPrintPrompt = true;
648 int rc = VINF_SUCCESS;
649 switch (pEvent->enmType)
650 {
651 /*
652 * The first part is events we have initiated with commands.
653 */
654 case DBGFEVENT_HALT_DONE:
655 {
656 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: VM %p is halted! (%s)\n",
657 pDbgc->pVM, dbgcGetEventCtx(pEvent->enmCtx));
658 pDbgc->fRegCtxGuest = true; /* we're always in guest context when halted. */
659 if (RT_SUCCESS(rc))
660 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
661 break;
662 }
663
664
665 /*
666 * The second part is events which can occur at any time.
667 */
668 case DBGFEVENT_FATAL_ERROR:
669 {
670 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbf event: Fatal error! (%s)\n",
671 dbgcGetEventCtx(pEvent->enmCtx));
672 pDbgc->fRegCtxGuest = false; /* fatal errors are always in hypervisor. */
673 if (RT_SUCCESS(rc))
674 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
675 break;
676 }
677
678 case DBGFEVENT_BREAKPOINT:
679 case DBGFEVENT_BREAKPOINT_IO:
680 case DBGFEVENT_BREAKPOINT_MMIO:
681 case DBGFEVENT_BREAKPOINT_HYPER:
682 {
683 bool fRegCtxGuest = pDbgc->fRegCtxGuest;
684 pDbgc->fRegCtxGuest = pEvent->enmType != DBGFEVENT_BREAKPOINT_HYPER;
685
686 rc = dbgcBpExec(pDbgc, pEvent->u.Bp.iBp);
687 switch (rc)
688 {
689 case VERR_DBGC_BP_NOT_FOUND:
690 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Unknown breakpoint %u! (%s)\n",
691 pEvent->u.Bp.iBp, dbgcGetEventCtx(pEvent->enmCtx));
692 break;
693
694 case VINF_DBGC_BP_NO_COMMAND:
695 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Breakpoint %u! (%s)\n",
696 pEvent->u.Bp.iBp, dbgcGetEventCtx(pEvent->enmCtx));
697 break;
698
699 case VINF_BUFFER_OVERFLOW:
700 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Breakpoint %u! Command too long to execute! (%s)\n",
701 pEvent->u.Bp.iBp, dbgcGetEventCtx(pEvent->enmCtx));
702 break;
703
704 default:
705 break;
706 }
707 if (RT_SUCCESS(rc) && DBGFR3IsHalted(pDbgc->pUVM))
708 {
709 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
710
711 /* Set the resume flag to ignore the breakpoint when resuming execution. */
712 if ( RT_SUCCESS(rc)
713 && pEvent->enmType == DBGFEVENT_BREAKPOINT)
714 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r eflags.rf = 1");
715 }
716 else
717 pDbgc->fRegCtxGuest = fRegCtxGuest;
718 break;
719 }
720
721 case DBGFEVENT_STEPPED:
722 case DBGFEVENT_STEPPED_HYPER:
723 {
724 pDbgc->fRegCtxGuest = pEvent->enmType == DBGFEVENT_STEPPED;
725
726 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: Single step! (%s)\n", dbgcGetEventCtx(pEvent->enmCtx));
727 if (RT_SUCCESS(rc))
728 {
729 if (pDbgc->fStepTraceRegs)
730 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
731 else
732 {
733 char szCmd[80];
734 if (!pDbgc->fRegCtxGuest)
735 rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu | DBGFREG_HYPER_VMCPUID, szCmd, sizeof(szCmd),
736 "u %VR{cs}:%VR{eip} L 0");
737 else if (DBGFR3CpuIsIn64BitCode(pDbgc->pUVM, pDbgc->idCpu))
738 rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "u %016VR{rip} L 0");
739 else if (DBGFR3CpuIsInV86Code(pDbgc->pUVM, pDbgc->idCpu))
740 rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "uv86 %04VR{cs}:%08VR{eip} L 0");
741 else
742 rc = DBGFR3RegPrintf(pDbgc->pUVM, pDbgc->idCpu, szCmd, sizeof(szCmd), "u %04VR{cs}:%08VR{eip} L 0");
743 if (RT_SUCCESS(rc))
744 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "%s", szCmd);
745 }
746 }
747 break;
748 }
749
750 case DBGFEVENT_ASSERTION_HYPER:
751 {
752 pDbgc->fRegCtxGuest = false;
753
754 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
755 "\ndbgf event: Hypervisor Assertion! (%s)\n"
756 "%s"
757 "%s"
758 "\n",
759 dbgcGetEventCtx(pEvent->enmCtx),
760 pEvent->u.Assert.pszMsg1,
761 pEvent->u.Assert.pszMsg2);
762 if (RT_SUCCESS(rc))
763 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
764 break;
765 }
766
767 case DBGFEVENT_DEV_STOP:
768 {
769 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
770 "\n"
771 "dbgf event: DBGFSTOP (%s)\n"
772 "File: %s\n"
773 "Line: %d\n"
774 "Function: %s\n",
775 dbgcGetEventCtx(pEvent->enmCtx),
776 pEvent->u.Src.pszFile,
777 pEvent->u.Src.uLine,
778 pEvent->u.Src.pszFunction);
779 if (RT_SUCCESS(rc) && pEvent->u.Src.pszMessage && *pEvent->u.Src.pszMessage)
780 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
781 "Message: %s\n",
782 pEvent->u.Src.pszMessage);
783 if (RT_SUCCESS(rc))
784 rc = pDbgc->CmdHlp.pfnExec(&pDbgc->CmdHlp, "r");
785 break;
786 }
787
788
789 case DBGFEVENT_INVALID_COMMAND:
790 {
791 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Invalid command event!\n");
792 break;
793 }
794
795 case DBGFEVENT_POWERING_OFF:
796 {
797 pDbgc->fReady = false;
798 pDbgc->pBack->pfnSetReady(pDbgc->pBack, false);
799 pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\nVM is powering off!\n");
800 fPrintPrompt = false;
801 rc = VERR_GENERAL_FAILURE;
802 break;
803 }
804
805
806 default:
807 {
808 /*
809 * Probably a generic event. Look it up to find its name.
810 */
811 PCDBGCSXEVT pEvtDesc = dbgcEventLookup(pEvent->enmType);
812 if (pEvtDesc)
813 {
814 if (pEvtDesc->enmKind == kDbgcSxEventKind_Interrupt)
815 {
816 Assert(pEvtDesc->pszDesc);
817 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s no %#llx! (%s)\n",
818 pEvtDesc->pszDesc, pEvent->u.Generic.uArg, pEvtDesc->pszName);
819 }
820 else if ( (pEvtDesc->fFlags & DBGCSXEVT_F_TAKE_ARG)
821 || pEvent->u.Generic.uArg != 0)
822 {
823 if (pEvtDesc->pszDesc)
824 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s - %s! arg=%#llx\n",
825 pEvtDesc->pszName, pEvtDesc->pszDesc, pEvent->u.Generic.uArg);
826 else
827 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s! arg=%#llx\n",
828 pEvtDesc->pszName, pEvent->u.Generic.uArg);
829 }
830 else
831 {
832 if (pEvtDesc->pszDesc)
833 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s - %s!\n",
834 pEvtDesc->pszName, pEvtDesc->pszDesc);
835 else
836 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf event: %s!\n", pEvtDesc->pszName);
837 }
838 }
839 else
840 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\ndbgf/dbgc error: Unknown event %d!\n", pEvent->enmType);
841 break;
842 }
843 }
844
845 /*
846 * Prompt, anyone?
847 */
848 if (fPrintPrompt && RT_SUCCESS(rc))
849 {
850 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
851 pDbgc->fReady = true;
852 if (RT_SUCCESS(rc))
853 pDbgc->pBack->pfnSetReady(pDbgc->pBack, true);
854 }
855
856 return rc;
857}
858
859
860/**
861 * Prints any log lines from the log buffer.
862 *
863 * The caller must not call function this unless pDbgc->fLog is set.
864 *
865 * @returns VBox status code. (output related)
866 * @param pDbgc Debugger console instance data.
867 */
868static int dbgcProcessLog(PDBGC pDbgc)
869{
870 /** @todo */
871 NOREF(pDbgc);
872 return 0;
873}
874
875/** @callback_method_impl{FNRTDBGCFGLOG} */
876static DECLCALLBACK(void) dbgcDbgCfgLogCallback(RTDBGCFG hDbgCfg, uint32_t iLevel, const char *pszMsg, void *pvUser)
877{
878 /** @todo Add symbol noise setting. */
879 NOREF(hDbgCfg); NOREF(iLevel);
880 PDBGC pDbgc = (PDBGC)pvUser;
881 pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "%s", pszMsg);
882}
883
884
885/**
886 * Run the debugger console.
887 *
888 * @returns VBox status code.
889 * @param pDbgc Pointer to the debugger console instance data.
890 */
891int dbgcRun(PDBGC pDbgc)
892{
893 /*
894 * We're ready for commands now.
895 */
896 pDbgc->fReady = true;
897 pDbgc->pBack->pfnSetReady(pDbgc->pBack, true);
898
899 /*
900 * Main Debugger Loop.
901 *
902 * This loop will either block on waiting for input or on waiting on
903 * debug events. If we're forwarding the log we cannot wait for long
904 * before we must flush the log.
905 */
906 int rc;
907 for (;;)
908 {
909 rc = VERR_SEM_OUT_OF_TURN;
910 if (pDbgc->pUVM)
911 rc = DBGFR3QueryWaitable(pDbgc->pUVM);
912
913 if (RT_SUCCESS(rc))
914 {
915 /*
916 * Wait for a debug event.
917 */
918 PCDBGFEVENT pEvent;
919 rc = DBGFR3EventWait(pDbgc->pUVM, pDbgc->fLog ? 1 : 32, &pEvent);
920 if (RT_SUCCESS(rc))
921 {
922 rc = dbgcProcessEvent(pDbgc, pEvent);
923 if (RT_FAILURE(rc))
924 break;
925 }
926 else if (rc != VERR_TIMEOUT)
927 break;
928
929 /*
930 * Check for input.
931 */
932 if (pDbgc->pBack->pfnInput(pDbgc->pBack, 0))
933 {
934 rc = dbgcProcessInput(pDbgc, false /* fNoExecute */);
935 if (RT_FAILURE(rc))
936 break;
937 }
938 }
939 else if (rc == VERR_SEM_OUT_OF_TURN)
940 {
941 /*
942 * Wait for input. If Logging is enabled we'll only wait very briefly.
943 */
944 if (pDbgc->pBack->pfnInput(pDbgc->pBack, pDbgc->fLog ? 1 : 1000))
945 {
946 rc = dbgcProcessInput(pDbgc, false /* fNoExecute */);
947 if (RT_FAILURE(rc))
948 break;
949 }
950 }
951 else
952 break;
953
954 /*
955 * Forward log output.
956 */
957 if (pDbgc->fLog)
958 {
959 rc = dbgcProcessLog(pDbgc);
960 if (RT_FAILURE(rc))
961 break;
962 }
963 }
964
965 return rc;
966}
967
968
969/**
970 * Run the init scripts, if present.
971 *
972 * @param pDbgc The console instance.
973 */
974static void dbgcRunInitScripts(PDBGC pDbgc)
975{
976 /*
977 * Do the global one, if it exists.
978 */
979 if ( pDbgc->pszGlobalInitScript
980 && *pDbgc->pszGlobalInitScript != '\0'
981 && RTFileExists(pDbgc->pszGlobalInitScript))
982 dbgcEvalScript(pDbgc, pDbgc->pszGlobalInitScript, true /*fAnnounce*/);
983
984 /*
985 * Then do the local one, if it exists.
986 */
987 if ( pDbgc->pszLocalInitScript
988 && *pDbgc->pszLocalInitScript != '\0'
989 && RTFileExists(pDbgc->pszLocalInitScript))
990 dbgcEvalScript(pDbgc, pDbgc->pszLocalInitScript, true /*fAnnounce*/);
991}
992
993
994/**
995 * Reads the CFGM configuration of the DBGC.
996 *
997 * Popuplates the PDBGC::pszHistoryFile, PDBGC::pszGlobalInitScript and
998 * PDBGC::pszLocalInitScript members.
999 *
1000 * @returns VBox status code.
1001 * @param pDbgc The console instance.
1002 * @param pUVM The user mode VM handle.
1003 */
1004static int dbgcReadConfig(PDBGC pDbgc, PUVM pUVM)
1005{
1006 /*
1007 * Get and validate the configuration node.
1008 */
1009 PCFGMNODE pNode = CFGMR3GetChild(CFGMR3GetRootU(pUVM), "DBGC");
1010 int rc = CFGMR3ValidateConfig(pNode, "/DBGC/",
1011 "Enabled|"
1012 "HistoryFile|"
1013 "LocalInitScript|"
1014 "GlobalInitScript",
1015 "", "DBGC", 0);
1016 AssertRCReturn(rc, rc);
1017
1018 /*
1019 * Query the values.
1020 */
1021 char szHomeDefault[RTPATH_MAX];
1022 rc = RTPathUserHome(szHomeDefault, sizeof(szHomeDefault) - 32);
1023 AssertLogRelRCReturn(rc, rc);
1024 size_t cchHome = strlen(szHomeDefault);
1025
1026 /** @cfgm{/DBGC/HistoryFile, string, ${HOME}/.vboxdbgc-history}
1027 * The command history file of the VBox debugger. */
1028 rc = RTPathAppend(szHomeDefault, sizeof(szHomeDefault), ".vboxdbgc-history");
1029 AssertLogRelRCReturn(rc, rc);
1030
1031 char szPath[RTPATH_MAX];
1032 rc = CFGMR3QueryStringDef(pNode, "HistoryFile", szPath, sizeof(szPath), szHomeDefault);
1033 AssertLogRelRCReturn(rc, rc);
1034
1035 pDbgc->pszHistoryFile = RTStrDup(szPath);
1036 AssertReturn(pDbgc->pszHistoryFile, VERR_NO_STR_MEMORY);
1037
1038 /** @cfgm{/DBGC/GlobalInitFile, string, ${HOME}/.vboxdbgc-init}
1039 * The global init script of the VBox debugger. */
1040 szHomeDefault[cchHome] = '\0';
1041 rc = RTPathAppend(szHomeDefault, sizeof(szHomeDefault), ".vboxdbgc-init");
1042 AssertLogRelRCReturn(rc, rc);
1043
1044 rc = CFGMR3QueryStringDef(pNode, "GlobalInitScript", szPath, sizeof(szPath), szHomeDefault);
1045 AssertLogRelRCReturn(rc, rc);
1046
1047 pDbgc->pszGlobalInitScript = RTStrDup(szPath);
1048 AssertReturn(pDbgc->pszGlobalInitScript, VERR_NO_STR_MEMORY);
1049
1050 /** @cfgm{/DBGC/LocalInitFile, string, none}
1051 * The VM local init script of the VBox debugger. */
1052 rc = CFGMR3QueryString(pNode, "LocalInitScript", szPath, sizeof(szPath));
1053 if (RT_SUCCESS(rc))
1054 {
1055 pDbgc->pszLocalInitScript = RTStrDup(szPath);
1056 AssertReturn(pDbgc->pszLocalInitScript, VERR_NO_STR_MEMORY);
1057 }
1058 else
1059 {
1060 AssertLogRelReturn(rc == VERR_CFGM_VALUE_NOT_FOUND || rc == VERR_CFGM_NO_PARENT, rc);
1061 pDbgc->pszLocalInitScript = NULL;
1062 }
1063
1064 return VINF_SUCCESS;
1065}
1066
1067
1068
1069/**
1070 * Creates a a new instance.
1071 *
1072 * @returns VBox status code.
1073 * @param ppDbgc Where to store the pointer to the instance data.
1074 * @param pBack Pointer to the backend.
1075 * @param fFlags The flags.
1076 */
1077int dbgcCreate(PDBGC *ppDbgc, PDBGCBACK pBack, unsigned fFlags)
1078{
1079 /*
1080 * Validate input.
1081 */
1082 AssertPtrReturn(pBack, VERR_INVALID_POINTER);
1083 AssertMsgReturn(!fFlags, ("%#x", fFlags), VERR_INVALID_PARAMETER);
1084
1085 /*
1086 * Allocate and initialize.
1087 */
1088 PDBGC pDbgc = (PDBGC)RTMemAllocZ(sizeof(*pDbgc));
1089 if (!pDbgc)
1090 return VERR_NO_MEMORY;
1091
1092 dbgcInitCmdHlp(pDbgc);
1093 pDbgc->pBack = pBack;
1094 pDbgc->pVM = NULL;
1095 pDbgc->pUVM = NULL;
1096 pDbgc->idCpu = 0;
1097 pDbgc->hDbgAs = DBGF_AS_GLOBAL;
1098 pDbgc->pszEmulation = "CodeView/WinDbg";
1099 pDbgc->paEmulationCmds = &g_aCmdsCodeView[0];
1100 pDbgc->cEmulationCmds = g_cCmdsCodeView;
1101 pDbgc->paEmulationFuncs = &g_aFuncsCodeView[0];
1102 pDbgc->cEmulationFuncs = g_cFuncsCodeView;
1103 //pDbgc->fLog = false;
1104 pDbgc->fRegCtxGuest = true;
1105 pDbgc->fRegTerse = true;
1106 pDbgc->fStepTraceRegs = true;
1107 //pDbgc->cPagingHierarchyDumps = 0;
1108 //pDbgc->DisasmPos = {0};
1109 //pDbgc->SourcePos = {0};
1110 //pDbgc->DumpPos = {0};
1111 pDbgc->pLastPos = &pDbgc->DisasmPos;
1112 //pDbgc->cbDumpElement = 0;
1113 //pDbgc->cVars = 0;
1114 //pDbgc->paVars = NULL;
1115 //pDbgc->pPlugInHead = NULL;
1116 //pDbgc->pFirstBp = NULL;
1117 //pDbgc->abSearch = {0};
1118 //pDbgc->cbSearch = 0;
1119 pDbgc->cbSearchUnit = 1;
1120 pDbgc->cMaxSearchHits = 1;
1121 //pDbgc->SearchAddr = {0};
1122 //pDbgc->cbSearchRange = 0;
1123
1124 //pDbgc->uInputZero = 0;
1125 //pDbgc->iRead = 0;
1126 //pDbgc->iWrite = 0;
1127 //pDbgc->cInputLines = 0;
1128 //pDbgc->fInputOverflow = false;
1129 pDbgc->fReady = true;
1130 pDbgc->pszScratch = &pDbgc->achScratch[0];
1131 //pDbgc->iArg = 0;
1132 //pDbgc->rcOutput = 0;
1133 //pDbgc->rcCmd = 0;
1134
1135 //pDbgc->pszHistoryFile = NULL;
1136 //pDbgc->pszGlobalInitScript = NULL;
1137 //pDbgc->pszLocalInitScript = NULL;
1138
1139 dbgcEvalInit();
1140
1141 *ppDbgc = pDbgc;
1142 return VINF_SUCCESS;
1143}
1144
1145/**
1146 * Destroys a DBGC instance created by dbgcCreate.
1147 *
1148 * @param pDbgc Pointer to the debugger console instance data.
1149 */
1150void dbgcDestroy(PDBGC pDbgc)
1151{
1152 AssertPtr(pDbgc);
1153
1154 /* Disable log hook. */
1155 if (pDbgc->fLog)
1156 {
1157
1158 }
1159
1160 /* Detach from the VM. */
1161 if (pDbgc->pUVM)
1162 DBGFR3Detach(pDbgc->pUVM);
1163
1164 /* Free config strings. */
1165 RTStrFree(pDbgc->pszGlobalInitScript);
1166 pDbgc->pszGlobalInitScript = NULL;
1167 RTStrFree(pDbgc->pszLocalInitScript);
1168 pDbgc->pszLocalInitScript = NULL;
1169 RTStrFree(pDbgc->pszHistoryFile);
1170 pDbgc->pszHistoryFile = NULL;
1171
1172 /* Finally, free the instance memory. */
1173 RTMemFree(pDbgc);
1174}
1175
1176
1177/**
1178 * Make a console instance.
1179 *
1180 * This will not return until either an 'exit' command is issued or a error code
1181 * indicating connection loss is encountered.
1182 *
1183 * @returns VINF_SUCCESS if console termination caused by the 'exit' command.
1184 * @returns The VBox status code causing the console termination.
1185 *
1186 * @param pUVM The user mode VM handle.
1187 * @param pBack Pointer to the backend structure. This must contain
1188 * a full set of function pointers to service the console.
1189 * @param fFlags Reserved, must be zero.
1190 * @remarks A forced termination of the console is easiest done by forcing the
1191 * callbacks to return fatal failures.
1192 */
1193DBGDECL(int) DBGCCreate(PUVM pUVM, PDBGCBACK pBack, unsigned fFlags)
1194{
1195 /*
1196 * Validate input.
1197 */
1198 AssertPtrNullReturn(pUVM, VERR_INVALID_VM_HANDLE);
1199 PVM pVM = NULL;
1200 if (pUVM)
1201 {
1202 pVM = VMR3GetVM(pUVM);
1203 AssertPtrReturn(pVM, VERR_INVALID_VM_HANDLE);
1204 }
1205
1206 /*
1207 * Allocate and initialize instance data
1208 */
1209 PDBGC pDbgc;
1210 int rc = dbgcCreate(&pDbgc, pBack, fFlags);
1211 if (RT_FAILURE(rc))
1212 return rc;
1213 if (!HMR3IsEnabled(pUVM) && !NEMR3IsEnabled(pUVM))
1214 pDbgc->hDbgAs = DBGF_AS_RC_AND_GC_GLOBAL;
1215
1216 /*
1217 * Print welcome message.
1218 */
1219 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
1220 "Welcome to the VirtualBox Debugger!\n");
1221
1222 /*
1223 * Attach to the specified VM.
1224 */
1225 if (RT_SUCCESS(rc) && pUVM)
1226 {
1227 rc = dbgcReadConfig(pDbgc, pUVM);
1228 if (RT_SUCCESS(rc))
1229 {
1230 rc = DBGFR3Attach(pUVM);
1231 if (RT_SUCCESS(rc))
1232 {
1233 pDbgc->pVM = pVM;
1234 pDbgc->pUVM = pUVM;
1235 pDbgc->idCpu = 0;
1236 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL,
1237 "Current VM is %08x, CPU #%u\n" /** @todo get and print the VM name! */
1238 , pDbgc->pVM, pDbgc->idCpu);
1239 }
1240 else
1241 rc = pDbgc->CmdHlp.pfnVBoxError(&pDbgc->CmdHlp, rc, "When trying to attach to VM %p\n", pDbgc->pVM);
1242 }
1243 else
1244 rc = pDbgc->CmdHlp.pfnVBoxError(&pDbgc->CmdHlp, rc, "Error reading configuration\n");
1245 }
1246
1247 /*
1248 * Load plugins.
1249 */
1250 if (RT_SUCCESS(rc))
1251 {
1252 if (pVM)
1253 DBGFR3PlugInLoadAll(pDbgc->pUVM);
1254 dbgcEventInit(pDbgc);
1255 dbgcRunInitScripts(pDbgc);
1256
1257 rc = pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "VBoxDbg> ");
1258 if (RT_SUCCESS(rc))
1259 {
1260 /*
1261 * Set debug config log callback.
1262 */
1263 RTDBGCFG hDbgCfg = DBGFR3AsGetConfig(pUVM);
1264 if ( hDbgCfg != NIL_RTDBGCFG
1265 && RTDbgCfgRetain(hDbgCfg) != UINT32_MAX)
1266 {
1267 int rc2 = RTDbgCfgSetLogCallback(hDbgCfg, dbgcDbgCfgLogCallback, pDbgc);
1268 if (RT_FAILURE(rc2))
1269 {
1270 hDbgCfg = NIL_RTDBGCFG;
1271 RTDbgCfgRelease(hDbgCfg);
1272 }
1273 }
1274 else
1275 hDbgCfg = NIL_RTDBGCFG;
1276
1277
1278 /*
1279 * Run the debugger main loop.
1280 */
1281 rc = dbgcRun(pDbgc);
1282
1283
1284 /*
1285 * Remove debug config log callback.
1286 */
1287 if (hDbgCfg != NIL_RTDBGCFG)
1288 {
1289 RTDbgCfgSetLogCallback(hDbgCfg, NULL, NULL);
1290 RTDbgCfgRelease(hDbgCfg);
1291 }
1292 }
1293 dbgcEventTerm(pDbgc);
1294 }
1295 else
1296 pDbgc->CmdHlp.pfnPrintf(&pDbgc->CmdHlp, NULL, "\nDBGCCreate error: %Rrc\n", rc);
1297
1298
1299 /*
1300 * Cleanup console debugger session.
1301 */
1302 dbgcDestroy(pDbgc);
1303 return rc == VERR_DBGC_QUIT ? VINF_SUCCESS : rc;
1304}
1305
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