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Merge from amd64 branch:
[reactos.git] / reactos / ntoskrnl / kdbg / kdb_cli.c
1 /*
2 * ReactOS kernel
3 * Copyright (C) 2005 ReactOS Team
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19 /*
20 * PROJECT: ReactOS kernel
21 * FILE: ntoskrnl/dbg/kdb_cli.c
22 * PURPOSE: Kernel debugger command line interface
23 * PROGRAMMER: Gregor Anich (blight@blight.eu.org)
24 * Hervé Poussineau
25 * UPDATE HISTORY:
26 * Created 16/01/2005
27 */
28
29 /* INCLUDES ******************************************************************/
30
31 #include <ntoskrnl.h>
32
33 #define NDEBUG
34 #include <debug.h>
35
36 /* DEFINES *******************************************************************/
37
38 #define KEY_BS 8
39 #define KEY_ESC 27
40 #define KEY_DEL 127
41
42 #define KEY_SCAN_UP 72
43 #define KEY_SCAN_DOWN 80
44
45 #define KDB_ENTER_CONDITION_TO_STRING(cond) \
46 ((cond) == KdbDoNotEnter ? "never" : \
47 ((cond) == KdbEnterAlways ? "always" : \
48 ((cond) == KdbEnterFromKmode ? "kmode" : "umode")))
49
50 #define KDB_ACCESS_TYPE_TO_STRING(type) \
51 ((type) == KdbAccessRead ? "read" : \
52 ((type) == KdbAccessWrite ? "write" : \
53 ((type) == KdbAccessReadWrite ? "rdwr" : "exec")))
54
55 #define NPX_STATE_TO_STRING(state) \
56 ((state) == NPX_STATE_LOADED ? "Loaded" : \
57 ((state) == NPX_STATE_NOT_LOADED ? "Not loaded" : "Unknown"))
58
59 /* PROTOTYPES ****************************************************************/
60
61 static BOOLEAN KdbpCmdEvalExpression(ULONG Argc, PCHAR Argv[]);
62 static BOOLEAN KdbpCmdDisassembleX(ULONG Argc, PCHAR Argv[]);
63 static BOOLEAN KdbpCmdRegs(ULONG Argc, PCHAR Argv[]);
64 static BOOLEAN KdbpCmdBackTrace(ULONG Argc, PCHAR Argv[]);
65
66 static BOOLEAN KdbpCmdContinue(ULONG Argc, PCHAR Argv[]);
67 static BOOLEAN KdbpCmdStep(ULONG Argc, PCHAR Argv[]);
68 static BOOLEAN KdbpCmdBreakPointList(ULONG Argc, PCHAR Argv[]);
69 static BOOLEAN KdbpCmdEnableDisableClearBreakPoint(ULONG Argc, PCHAR Argv[]);
70 static BOOLEAN KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[]);
71
72 static BOOLEAN KdbpCmdThread(ULONG Argc, PCHAR Argv[]);
73 static BOOLEAN KdbpCmdProc(ULONG Argc, PCHAR Argv[]);
74
75 static BOOLEAN KdbpCmdMod(ULONG Argc, PCHAR Argv[]);
76 static BOOLEAN KdbpCmdGdtLdtIdt(ULONG Argc, PCHAR Argv[]);
77 static BOOLEAN KdbpCmdPcr(ULONG Argc, PCHAR Argv[]);
78 static BOOLEAN KdbpCmdTss(ULONG Argc, PCHAR Argv[]);
79
80 static BOOLEAN KdbpCmdBugCheck(ULONG Argc, PCHAR Argv[]);
81 static BOOLEAN KdbpCmdFilter(ULONG Argc, PCHAR Argv[]);
82 static BOOLEAN KdbpCmdSet(ULONG Argc, PCHAR Argv[]);
83 static BOOLEAN KdbpCmdHelp(ULONG Argc, PCHAR Argv[]);
84
85 /* GLOBALS *******************************************************************/
86
87 static BOOLEAN KdbUseIntelSyntax = FALSE; /* Set to TRUE for intel syntax */
88 static BOOLEAN KdbBreakOnModuleLoad = FALSE; /* Set to TRUE to break into KDB when a module is loaded */
89
90 static CHAR KdbCommandHistoryBuffer[2048]; /* Command history string ringbuffer */
91 static PCHAR KdbCommandHistory[sizeof(KdbCommandHistoryBuffer) / 8] = { NULL }; /* Command history ringbuffer */
92 static LONG KdbCommandHistoryBufferIndex = 0;
93 static LONG KdbCommandHistoryIndex = 0;
94
95 static ULONG KdbNumberOfRowsPrinted = 0;
96 static ULONG KdbNumberOfColsPrinted = 0;
97 static BOOLEAN KdbOutputAborted = FALSE;
98 static LONG KdbNumberOfRowsTerminal = -1;
99 static LONG KdbNumberOfColsTerminal = -1;
100
101 PCHAR KdbInitFileBuffer = NULL; /* Buffer where KDBinit file is loaded into during initialization */
102 BOOLEAN KdbpBugCheckRequested = FALSE;
103
104 static const struct
105 {
106 PCHAR Name;
107 PCHAR Syntax;
108 PCHAR Help;
109 BOOLEAN (*Fn)(ULONG Argc, PCHAR Argv[]);
110 } KdbDebuggerCommands[] = {
111 /* Data */
112 { NULL, NULL, "Data", NULL },
113 { "?", "? expression", "Evaluate expression.", KdbpCmdEvalExpression },
114 { "disasm", "disasm [address] [L count]", "Disassemble count instructions at address.", KdbpCmdDisassembleX },
115 { "x", "x [address] [L count]", "Display count dwords, starting at addr.", KdbpCmdDisassembleX },
116 { "regs", "regs", "Display general purpose registers.", KdbpCmdRegs },
117 { "cregs", "cregs", "Display control registers.", KdbpCmdRegs },
118 { "sregs", "sregs", "Display status registers.", KdbpCmdRegs },
119 { "dregs", "dregs", "Display debug registers.", KdbpCmdRegs },
120 { "bt", "bt [*frameaddr|thread id]", "Prints current backtrace or from given frame addr", KdbpCmdBackTrace },
121
122 /* Flow control */
123 { NULL, NULL, "Flow control", NULL },
124 { "cont", "cont", "Continue execution (leave debugger)", KdbpCmdContinue },
125 { "step", "step [count]", "Execute single instructions, stepping into interrupts.", KdbpCmdStep },
126 { "next", "next [count]", "Execute single instructions, skipping calls and reps.", KdbpCmdStep },
127 { "bl", "bl", "List breakpoints.", KdbpCmdBreakPointList },
128 { "be", "be [breakpoint]", "Enable breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
129 { "bd", "bd [breakpoint]", "Disable breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
130 { "bc", "bc [breakpoint]", "Clear breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
131 { "bpx", "bpx [address] [IF condition]", "Set software execution breakpoint at address.", KdbpCmdBreakPoint },
132 { "bpm", "bpm [r|w|rw|x] [byte|word|dword] [address] [IF condition]", "Set memory breakpoint at address.", KdbpCmdBreakPoint },
133
134 /* Process/Thread */
135 { NULL, NULL, "Process/Thread", NULL },
136 { "thread", "thread [list[ pid]|[attach ]tid]", "List threads in current or specified process, display thread with given id or attach to thread.", KdbpCmdThread },
137 { "proc", "proc [list|[attach ]pid]", "List processes, display process with given id or attach to process.", KdbpCmdProc },
138
139 /* System information */
140 { NULL, NULL, "System info", NULL },
141 { "mod", "mod [address]", "List all modules or the one containing address.", KdbpCmdMod },
142 { "gdt", "gdt", "Display global descriptor table.", KdbpCmdGdtLdtIdt },
143 { "ldt", "ldt", "Display local descriptor table.", KdbpCmdGdtLdtIdt },
144 { "idt", "idt", "Display interrupt descriptor table.", KdbpCmdGdtLdtIdt },
145 { "pcr", "pcr", "Display processor control region.", KdbpCmdPcr },
146 { "tss", "tss", "Display task state segment.", KdbpCmdTss },
147
148 /* Others */
149 { NULL, NULL, "Others", NULL },
150 { "bugcheck", "bugcheck", "Bugchecks the system.", KdbpCmdBugCheck },
151 { "filter", "filter [error|warning|trace|info|level]+|-[componentname|default]", "Enable/disable debug channels", KdbpCmdFilter },
152 { "set", "set [var] [value]", "Sets var to value or displays value of var.", KdbpCmdSet },
153 { "help", "help", "Display help screen.", KdbpCmdHelp }
154 };
155
156 /* FUNCTIONS *****************************************************************/
157
158 /*!\brief Transform a component name to an integer
159 *
160 * \param ComponentName The name of the component.
161 * \param ComponentId Receives the component id on success.
162 *
163 * \retval TRUE Success.
164 * \retval FALSE Failure.
165 */
166 static BOOLEAN
167 KdbpGetComponentId(
168 IN PCCH ComponentName,
169 OUT PULONG ComponentId)
170 {
171 ULONG i;
172
173 static struct
174 {
175 PCCH Name;
176 ULONG Id;
177 }
178 ComponentTable[] =
179 {
180 { "DEFAULT", DPFLTR_DEFAULT_ID },
181 { "SYSTEM", DPFLTR_SYSTEM_ID },
182 { "SMSS", DPFLTR_SMSS_ID },
183 { "SETUP", DPFLTR_SETUP_ID },
184 { "NTFS", DPFLTR_NTFS_ID },
185 { "FSTUB", DPFLTR_FSTUB_ID },
186 { "CRASHDUMP", DPFLTR_CRASHDUMP_ID },
187 { "CDAUDIO", DPFLTR_CDAUDIO_ID },
188 { "CDROM", DPFLTR_CDROM_ID },
189 { "CLASSPNP", DPFLTR_CLASSPNP_ID },
190 { "DISK", DPFLTR_DISK_ID },
191 { "REDBOOK", DPFLTR_REDBOOK_ID },
192 { "STORPROP", DPFLTR_STORPROP_ID },
193 { "SCSIPORT", DPFLTR_SCSIPORT_ID },
194 { "SCSIMINIPORT", DPFLTR_SCSIMINIPORT_ID },
195 { "CONFIG", DPFLTR_CONFIG_ID },
196 { "I8042PRT", DPFLTR_I8042PRT_ID },
197 { "SERMOUSE", DPFLTR_SERMOUSE_ID },
198 { "LSERMOUS", DPFLTR_LSERMOUS_ID },
199 { "KBDHID", DPFLTR_KBDHID_ID },
200 { "MOUHID", DPFLTR_MOUHID_ID },
201 { "KBDCLASS", DPFLTR_KBDCLASS_ID },
202 { "MOUCLASS", DPFLTR_MOUCLASS_ID },
203 { "TWOTRACK", DPFLTR_TWOTRACK_ID },
204 { "WMILIB", DPFLTR_WMILIB_ID },
205 { "ACPI", DPFLTR_ACPI_ID },
206 { "AMLI", DPFLTR_AMLI_ID },
207 { "HALIA64", DPFLTR_HALIA64_ID },
208 { "VIDEO", DPFLTR_VIDEO_ID },
209 { "SVCHOST", DPFLTR_SVCHOST_ID },
210 { "VIDEOPRT", DPFLTR_VIDEOPRT_ID },
211 { "TCPIP", DPFLTR_TCPIP_ID },
212 { "DMSYNTH", DPFLTR_DMSYNTH_ID },
213 { "NTOSPNP", DPFLTR_NTOSPNP_ID },
214 { "FASTFAT", DPFLTR_FASTFAT_ID },
215 { "SAMSS", DPFLTR_SAMSS_ID },
216 { "PNPMGR", DPFLTR_PNPMGR_ID },
217 { "NETAPI", DPFLTR_NETAPI_ID },
218 { "SCSERVER", DPFLTR_SCSERVER_ID },
219 { "SCCLIENT", DPFLTR_SCCLIENT_ID },
220 { "SERIAL", DPFLTR_SERIAL_ID },
221 { "SERENUM", DPFLTR_SERENUM_ID },
222 { "UHCD", DPFLTR_UHCD_ID },
223 { "BOOTOK", DPFLTR_BOOTOK_ID },
224 { "BOOTVRFY", DPFLTR_BOOTVRFY_ID },
225 { "RPCPROXY", DPFLTR_RPCPROXY_ID },
226 { "AUTOCHK", DPFLTR_AUTOCHK_ID },
227 { "DCOMSS", DPFLTR_DCOMSS_ID },
228 { "UNIMODEM", DPFLTR_UNIMODEM_ID },
229 { "SIS", DPFLTR_SIS_ID },
230 { "FLTMGR", DPFLTR_FLTMGR_ID },
231 { "WMICORE", DPFLTR_WMICORE_ID },
232 { "BURNENG", DPFLTR_BURNENG_ID },
233 { "IMAPI", DPFLTR_IMAPI_ID },
234 { "SXS", DPFLTR_SXS_ID },
235 { "FUSION", DPFLTR_FUSION_ID },
236 { "IDLETASK", DPFLTR_IDLETASK_ID },
237 { "SOFTPCI", DPFLTR_SOFTPCI_ID },
238 { "TAPE", DPFLTR_TAPE_ID },
239 { "MCHGR", DPFLTR_MCHGR_ID },
240 { "IDEP", DPFLTR_IDEP_ID },
241 { "PCIIDE", DPFLTR_PCIIDE_ID },
242 { "FLOPPY", DPFLTR_FLOPPY_ID },
243 { "FDC", DPFLTR_FDC_ID },
244 { "TERMSRV", DPFLTR_TERMSRV_ID },
245 { "W32TIME", DPFLTR_W32TIME_ID },
246 { "PREFETCHER", DPFLTR_PREFETCHER_ID },
247 { "RSFILTER", DPFLTR_RSFILTER_ID },
248 { "FCPORT", DPFLTR_FCPORT_ID },
249 { "PCI", DPFLTR_PCI_ID },
250 { "DMIO", DPFLTR_DMIO_ID },
251 { "DMCONFIG", DPFLTR_DMCONFIG_ID },
252 { "DMADMIN", DPFLTR_DMADMIN_ID },
253 { "WSOCKTRANSPORT", DPFLTR_WSOCKTRANSPORT_ID },
254 { "VSS", DPFLTR_VSS_ID },
255 { "PNPMEM", DPFLTR_PNPMEM_ID },
256 { "PROCESSOR", DPFLTR_PROCESSOR_ID },
257 { "DMSERVER", DPFLTR_DMSERVER_ID },
258 { "SR", DPFLTR_SR_ID },
259 { "INFINIBAND", DPFLTR_INFINIBAND_ID },
260 { "IHVDRIVER", DPFLTR_IHVDRIVER_ID },
261 { "IHVVIDEO", DPFLTR_IHVVIDEO_ID },
262 { "IHVAUDIO", DPFLTR_IHVAUDIO_ID },
263 { "IHVNETWORK", DPFLTR_IHVNETWORK_ID },
264 { "IHVSTREAMING", DPFLTR_IHVSTREAMING_ID },
265 { "IHVBUS", DPFLTR_IHVBUS_ID },
266 { "HPS", DPFLTR_HPS_ID },
267 { "RTLTHREADPOOL", DPFLTR_RTLTHREADPOOL_ID },
268 { "LDR", DPFLTR_LDR_ID },
269 { "TCPIP6", DPFLTR_TCPIP6_ID },
270 { "ISAPNP", DPFLTR_ISAPNP_ID },
271 { "SHPC", DPFLTR_SHPC_ID },
272 { "STORPORT", DPFLTR_STORPORT_ID },
273 { "STORMINIPORT", DPFLTR_STORMINIPORT_ID },
274 { "PRINTSPOOLER", DPFLTR_PRINTSPOOLER_ID },
275 };
276
277 for (i = 0; i < sizeof(ComponentTable) / sizeof(ComponentTable[0]); i++)
278 {
279 if (_stricmp(ComponentName, ComponentTable[i].Name) == 0)
280 {
281 *ComponentId = ComponentTable[i].Id;
282 return TRUE;
283 }
284 }
285
286 return FALSE;
287 }
288
289 /*!\brief Evaluates an expression...
290 *
291 * Much like KdbpRpnEvaluateExpression, but prints the error message (if any)
292 * at the given offset.
293 *
294 * \param Expression Expression to evaluate.
295 * \param ErrOffset Offset (in characters) to print the error message at.
296 * \param Result Receives the result on success.
297 *
298 * \retval TRUE Success.
299 * \retval FALSE Failure.
300 */
301 static BOOLEAN
302 KdbpEvaluateExpression(
303 IN PCHAR Expression,
304 IN LONG ErrOffset,
305 OUT PULONGLONG Result)
306 {
307 static CHAR ErrMsgBuffer[130] = "^ ";
308 LONG ExpressionErrOffset = -1;
309 PCHAR ErrMsg = ErrMsgBuffer;
310 BOOLEAN Ok;
311
312 Ok = KdbpRpnEvaluateExpression(Expression, KdbCurrentTrapFrame, Result,
313 &ExpressionErrOffset, ErrMsgBuffer + 2);
314 if (!Ok)
315 {
316 if (ExpressionErrOffset >= 0)
317 ExpressionErrOffset += ErrOffset;
318 else
319 ErrMsg += 2;
320
321 KdbpPrint("%*s%s\n", ExpressionErrOffset, "", ErrMsg);
322 }
323
324 return Ok;
325 }
326
327 /*!\brief Evaluates an expression and displays the result.
328 */
329 static BOOLEAN
330 KdbpCmdEvalExpression(
331 ULONG Argc,
332 PCHAR Argv[])
333 {
334 ULONG i, len;
335 ULONGLONG Result = 0;
336 ULONG ul;
337 LONG l = 0;
338 BOOLEAN Ok;
339
340 if (Argc < 2)
341 {
342 KdbpPrint("?: Argument required\n");
343 return TRUE;
344 }
345
346 /* Put the arguments back together */
347 Argc--;
348 for (i = 1; i < Argc; i++)
349 {
350 len = strlen(Argv[i]);
351 Argv[i][len] = ' ';
352 }
353
354 /* Evaluate the expression */
355 Ok = KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result);
356 if (Ok)
357 {
358 if (Result > 0x00000000ffffffffLL)
359 {
360 if (Result & 0x8000000000000000LL)
361 KdbpPrint("0x%016I64x %20I64u %20I64d\n", Result, Result, Result);
362 else
363 KdbpPrint("0x%016I64x %20I64u\n", Result, Result);
364 }
365 else
366 {
367 ul = (ULONG)Result;
368
369 if (ul <= 0xff && ul >= 0x80)
370 l = (LONG)((CHAR)ul);
371 else if (ul <= 0xffff && ul >= 0x8000)
372 l = (LONG)((SHORT)ul);
373 else
374 l = (LONG)ul;
375
376 if (l < 0)
377 KdbpPrint("0x%08lx %10lu %10ld\n", ul, ul, l);
378 else
379 KdbpPrint("0x%08lx %10lu\n", ul, ul);
380 }
381 }
382
383 return TRUE;
384 }
385
386 /*!\brief Display list of active debug channels
387 */
388 static BOOLEAN
389 KdbpCmdFilter(
390 ULONG Argc,
391 PCHAR Argv[])
392 {
393 ULONG i, j, ComponentId, Level;
394 ULONG set = DPFLTR_MASK, clear = DPFLTR_MASK;
395 PCHAR pend;
396 LPCSTR opt, p;
397
398 static struct
399 {
400 LPCSTR Name;
401 ULONG Level;
402 }
403 debug_classes[] =
404 {
405 { "error", 1 << DPFLTR_ERROR_LEVEL },
406 { "warning", 1 << DPFLTR_WARNING_LEVEL },
407 { "trace", 1 << DPFLTR_TRACE_LEVEL },
408 { "info", 1 << DPFLTR_INFO_LEVEL },
409 };
410
411 for (i = 1; i < Argc; i++)
412 {
413 opt = Argv[i];
414 p = opt + strcspn(opt, "+-");
415 if (!p[0]) p = opt; /* assume it's a debug channel name */
416
417 if (p > opt)
418 {
419 for (j = 0; j < sizeof(debug_classes) / sizeof(debug_classes[0]); j++)
420 {
421 SIZE_T len = strlen(debug_classes[j].Name);
422 if (len != (p - opt))
423 continue;
424 if (_strnicmp(opt, debug_classes[j].Name, len) == 0) /* found it */
425 {
426 if (*p == '+')
427 set |= debug_classes[j].Level;
428 else
429 clear |= debug_classes[j].Level;
430 break;
431 }
432 }
433 if (j == sizeof(debug_classes) / sizeof(debug_classes[0]))
434 {
435 Level = strtoul(opt, &pend, 0);
436 if (pend != p)
437 {
438 KdbpPrint("filter: bad class name '%.*s'\n", p - opt, opt);
439 continue;
440 }
441 if (*p == '+')
442 set |= Level;
443 else
444 clear |= Level;
445 }
446 }
447 else
448 {
449 if (*p == '-')
450 clear = MAXULONG;
451 else
452 set = MAXULONG;
453 }
454 if (*p == '+' || *p == '-')
455 p++;
456
457 if (!KdbpGetComponentId(p, &ComponentId))
458 {
459 KdbpPrint("filter: '%s' is not a valid component name!\n", p);
460 return TRUE;
461 }
462
463 /* Get current mask value */
464 NtSetDebugFilterState(ComponentId, set, TRUE);
465 NtSetDebugFilterState(ComponentId, clear, FALSE);
466 }
467
468 return TRUE;
469 }
470
471 /*!\brief Disassembles 10 instructions at eip or given address or
472 * displays 16 dwords from memory at given address.
473 */
474 static BOOLEAN
475 KdbpCmdDisassembleX(
476 ULONG Argc,
477 PCHAR Argv[])
478 {
479 ULONG Count;
480 ULONG ul;
481 INT i;
482 ULONGLONG Result = 0;
483 ULONG_PTR Address = KdbCurrentTrapFrame->Tf.Eip;
484 LONG InstLen;
485
486 if (Argv[0][0] == 'x') /* display memory */
487 Count = 16;
488 else /* disassemble */
489 Count = 10;
490
491 if (Argc >= 2)
492 {
493 /* Check for [L count] part */
494 ul = 0;
495 if (strcmp(Argv[Argc-2], "L") == 0)
496 {
497 ul = strtoul(Argv[Argc-1], NULL, 0);
498 if (ul > 0)
499 {
500 Count = ul;
501 Argc -= 2;
502 }
503 }
504 else if (Argv[Argc-1][0] == 'L')
505 {
506 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
507 if (ul > 0)
508 {
509 Count = ul;
510 Argc--;
511 }
512 }
513
514 /* Put the remaining arguments back together */
515 Argc--;
516 for (ul = 1; ul < Argc; ul++)
517 {
518 Argv[ul][strlen(Argv[ul])] = ' ';
519 }
520 Argc++;
521 }
522
523 /* Evaluate the expression */
524 if (Argc > 1)
525 {
526 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
527 return TRUE;
528
529 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
530 KdbpPrint("Warning: Address %I64x is beeing truncated\n");
531
532 Address = (ULONG_PTR)Result;
533 }
534 else if (Argv[0][0] == 'x')
535 {
536 KdbpPrint("x: Address argument required.\n");
537 return TRUE;
538 }
539
540 if (Argv[0][0] == 'x')
541 {
542 /* Display dwords */
543 ul = 0;
544
545 while (Count > 0)
546 {
547 if (!KdbSymPrintAddress((PVOID)Address))
548 KdbpPrint("<%x>:", Address);
549 else
550 KdbpPrint(":");
551
552 i = min(4, Count);
553 Count -= i;
554
555 while (--i >= 0)
556 {
557 if (!NT_SUCCESS(KdbpSafeReadMemory(&ul, (PVOID)Address, sizeof(ul))))
558 KdbpPrint(" ????????");
559 else
560 KdbpPrint(" %08x", ul);
561
562 Address += sizeof(ul);
563 }
564
565 KdbpPrint("\n");
566 }
567 }
568 else
569 {
570 /* Disassemble */
571 while (Count-- > 0)
572 {
573 if (!KdbSymPrintAddress((PVOID)Address))
574 KdbpPrint("<%08x>: ", Address);
575 else
576 KdbpPrint(": ");
577
578 InstLen = KdbpDisassemble(Address, KdbUseIntelSyntax);
579 if (InstLen < 0)
580 {
581 KdbpPrint("<INVALID>\n");
582 return TRUE;
583 }
584
585 KdbpPrint("\n");
586 Address += InstLen;
587 }
588 }
589
590 return TRUE;
591 }
592
593 /*!\brief Displays CPU registers.
594 */
595 static BOOLEAN
596 KdbpCmdRegs(
597 ULONG Argc,
598 PCHAR Argv[])
599 {
600 PKTRAP_FRAME Tf = &KdbCurrentTrapFrame->Tf;
601 INT i;
602 static const PCHAR EflagsBits[32] = { " CF", NULL, " PF", " BIT3", " AF", " BIT5",
603 " ZF", " SF", " TF", " IF", " DF", " OF",
604 NULL, NULL, " NT", " BIT15", " RF", " VF",
605 " AC", " VIF", " VIP", " ID", " BIT22",
606 " BIT23", " BIT24", " BIT25", " BIT26",
607 " BIT27", " BIT28", " BIT29", " BIT30",
608 " BIT31" };
609
610 if (Argv[0][0] == 'r') /* regs */
611 {
612 KdbpPrint("CS:EIP 0x%04x:0x%08x\n"
613 "SS:ESP 0x%04x:0x%08x\n"
614 " EAX 0x%08x EBX 0x%08x\n"
615 " ECX 0x%08x EDX 0x%08x\n"
616 " ESI 0x%08x EDI 0x%08x\n"
617 " EBP 0x%08x\n",
618 Tf->SegCs & 0xFFFF, Tf->Eip,
619 Tf->HardwareSegSs, Tf->HardwareEsp,
620 Tf->Eax, Tf->Ebx,
621 Tf->Ecx, Tf->Edx,
622 Tf->Esi, Tf->Edi,
623 Tf->Ebp);
624 KdbpPrint("EFLAGS 0x%08x ", Tf->EFlags);
625
626 for (i = 0; i < 32; i++)
627 {
628 if (i == 1)
629 {
630 if ((Tf->EFlags & (1 << 1)) == 0)
631 KdbpPrint(" !BIT1");
632 }
633 else if (i == 12)
634 {
635 KdbpPrint(" IOPL%d", (Tf->EFlags >> 12) & 3);
636 }
637 else if (i == 13)
638 {
639 }
640 else if ((Tf->EFlags & (1 << i)) != 0)
641 {
642 KdbpPrint(EflagsBits[i]);
643 }
644 }
645
646 KdbpPrint("\n");
647 }
648 else if (Argv[0][0] == 'c') /* cregs */
649 {
650 ULONG Cr0, Cr2, Cr3, Cr4;
651 KDESCRIPTOR Gdtr, Idtr;
652 USHORT Ldtr;
653 static const PCHAR Cr0Bits[32] = { " PE", " MP", " EM", " TS", " ET", " NE", NULL, NULL,
654 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
655 " WP", NULL, " AM", NULL, NULL, NULL, NULL, NULL,
656 NULL, NULL, NULL, NULL, NULL, " NW", " CD", " PG" };
657 static const PCHAR Cr4Bits[32] = { " VME", " PVI", " TSD", " DE", " PSE", " PAE", " MCE", " PGE",
658 " PCE", " OSFXSR", " OSXMMEXCPT", NULL, NULL, NULL, NULL, NULL,
659 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
660 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
661
662 Cr0 = KdbCurrentTrapFrame->Cr0;
663 Cr2 = KdbCurrentTrapFrame->Cr2;
664 Cr3 = KdbCurrentTrapFrame->Cr3;
665 Cr4 = KdbCurrentTrapFrame->Cr4;
666
667 /* Get descriptor table regs */
668 Ke386GetGlobalDescriptorTable(&Gdtr.Limit);
669 Ldtr = Ke386GetLocalDescriptorTable();
670 __sidt(&Idtr.Limit);
671
672 /* Display the control registers */
673 KdbpPrint("CR0 0x%08x ", Cr0);
674
675 for (i = 0; i < 32; i++)
676 {
677 if (!Cr0Bits[i])
678 continue;
679
680 if ((Cr0 & (1 << i)) != 0)
681 KdbpPrint(Cr0Bits[i]);
682 }
683
684 KdbpPrint("\nCR2 0x%08x\n", Cr2);
685 KdbpPrint("CR3 0x%08x Pagedir-Base 0x%08x %s%s\n", Cr3, (Cr3 & 0xfffff000),
686 (Cr3 & (1 << 3)) ? " PWT" : "", (Cr3 & (1 << 4)) ? " PCD" : "" );
687 KdbpPrint("CR4 0x%08x ", Cr4);
688
689 for (i = 0; i < 32; i++)
690 {
691 if (!Cr4Bits[i])
692 continue;
693
694 if ((Cr4 & (1 << i)) != 0)
695 KdbpPrint(Cr4Bits[i]);
696 }
697
698 /* Display the descriptor table regs */
699 KdbpPrint("\nGDTR Base 0x%08x Size 0x%04x\n", Gdtr.Base, Gdtr.Limit);
700 KdbpPrint("LDTR 0x%04x\n", Ldtr);
701 KdbpPrint("IDTR Base 0x%08x Size 0x%04x\n", Idtr.Base, Idtr.Limit);
702 }
703 else if (Argv[0][0] == 's') /* sregs */
704 {
705 KdbpPrint("CS 0x%04x Index 0x%04x %cDT RPL%d\n",
706 Tf->SegCs & 0xffff, (Tf->SegCs & 0xffff) >> 3,
707 (Tf->SegCs & (1 << 2)) ? 'L' : 'G', Tf->SegCs & 3);
708 KdbpPrint("DS 0x%04x Index 0x%04x %cDT RPL%d\n",
709 Tf->SegDs, Tf->SegDs >> 3, (Tf->SegDs & (1 << 2)) ? 'L' : 'G', Tf->SegDs & 3);
710 KdbpPrint("ES 0x%04x Index 0x%04x %cDT RPL%d\n",
711 Tf->SegEs, Tf->SegEs >> 3, (Tf->SegEs & (1 << 2)) ? 'L' : 'G', Tf->SegEs & 3);
712 KdbpPrint("FS 0x%04x Index 0x%04x %cDT RPL%d\n",
713 Tf->SegFs, Tf->SegFs >> 3, (Tf->SegFs & (1 << 2)) ? 'L' : 'G', Tf->SegFs & 3);
714 KdbpPrint("GS 0x%04x Index 0x%04x %cDT RPL%d\n",
715 Tf->SegGs, Tf->SegGs >> 3, (Tf->SegGs & (1 << 2)) ? 'L' : 'G', Tf->SegGs & 3);
716 KdbpPrint("SS 0x%04x Index 0x%04x %cDT RPL%d\n",
717 Tf->HardwareSegSs, Tf->HardwareSegSs >> 3, (Tf->HardwareSegSs & (1 << 2)) ? 'L' : 'G', Tf->HardwareSegSs & 3);
718 }
719 else /* dregs */
720 {
721 ASSERT(Argv[0][0] == 'd');
722 KdbpPrint("DR0 0x%08x\n"
723 "DR1 0x%08x\n"
724 "DR2 0x%08x\n"
725 "DR3 0x%08x\n"
726 "DR6 0x%08x\n"
727 "DR7 0x%08x\n",
728 Tf->Dr0, Tf->Dr1, Tf->Dr2, Tf->Dr3,
729 Tf->Dr6, Tf->Dr7);
730 }
731
732 return TRUE;
733 }
734
735 /*!\brief Displays a backtrace.
736 */
737 static BOOLEAN
738 KdbpCmdBackTrace(
739 ULONG Argc,
740 PCHAR Argv[])
741 {
742 ULONG Count;
743 ULONG ul;
744 ULONGLONG Result = 0;
745 ULONG_PTR Frame = KdbCurrentTrapFrame->Tf.Ebp;
746 ULONG_PTR Address;
747
748 if (Argc >= 2)
749 {
750 /* Check for [L count] part */
751 ul = 0;
752
753 if (strcmp(Argv[Argc-2], "L") == 0)
754 {
755 ul = strtoul(Argv[Argc-1], NULL, 0);
756 if (ul > 0)
757 {
758 Count = ul;
759 Argc -= 2;
760 }
761 }
762 else if (Argv[Argc-1][0] == 'L')
763 {
764 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
765 if (ul > 0)
766 {
767 Count = ul;
768 Argc--;
769 }
770 }
771
772 /* Put the remaining arguments back together */
773 Argc--;
774 for (ul = 1; ul < Argc; ul++)
775 {
776 Argv[ul][strlen(Argv[ul])] = ' ';
777 }
778 Argc++;
779 }
780
781 /* Check if frame addr or thread id is given. */
782 if (Argc > 1)
783 {
784 if (Argv[1][0] == '*')
785 {
786 Argv[1]++;
787
788 /* Evaluate the expression */
789 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
790 return TRUE;
791
792 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
793 KdbpPrint("Warning: Address %I64x is beeing truncated\n");
794
795 Frame = (ULONG_PTR)Result;
796 }
797 else
798 {
799 KdbpPrint("Thread backtrace not supported yet!\n");
800 return TRUE;
801 }
802 }
803 else
804 {
805 KdbpPrint("Eip:\n");
806
807 /* Try printing the function at EIP */
808 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
809 KdbpPrint("<%08x>\n", KdbCurrentTrapFrame->Tf.Eip);
810 else
811 KdbpPrint("\n");
812 }
813
814 KdbpPrint("Frames:\n");
815 for (;;)
816 {
817 if (Frame == 0)
818 break;
819
820 if (!NT_SUCCESS(KdbpSafeReadMemory(&Address, (PVOID)(Frame + sizeof(ULONG_PTR)), sizeof (ULONG_PTR))))
821 {
822 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame + sizeof(ULONG_PTR));
823 break;
824 }
825
826 if (!KdbSymPrintAddress((PVOID)Address))
827 KdbpPrint("<%08x>\n", Address);
828 else
829 KdbpPrint("\n");
830
831 if (Address == 0)
832 break;
833
834 if (!NT_SUCCESS(KdbpSafeReadMemory(&Frame, (PVOID)Frame, sizeof (ULONG_PTR))))
835 {
836 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame);
837 break;
838 }
839 }
840
841 return TRUE;
842 }
843
844 /*!\brief Continues execution of the system/leaves KDB.
845 */
846 static BOOLEAN
847 KdbpCmdContinue(
848 ULONG Argc,
849 PCHAR Argv[])
850 {
851 /* Exit the main loop */
852 return FALSE;
853 }
854
855 /*!\brief Continues execution of the system/leaves KDB.
856 */
857 static BOOLEAN
858 KdbpCmdStep(
859 ULONG Argc,
860 PCHAR Argv[])
861 {
862 ULONG Count = 1;
863
864 if (Argc > 1)
865 {
866 Count = strtoul(Argv[1], NULL, 0);
867 if (Count == 0)
868 {
869 KdbpPrint("%s: Integer argument required\n", Argv[0]);
870 return TRUE;
871 }
872 }
873
874 if (Argv[0][0] == 'n')
875 KdbSingleStepOver = TRUE;
876 else
877 KdbSingleStepOver = FALSE;
878
879 /* Set the number of single steps and return to the interrupted code. */
880 KdbNumSingleSteps = Count;
881
882 return FALSE;
883 }
884
885 /*!\brief Lists breakpoints.
886 */
887 static BOOLEAN
888 KdbpCmdBreakPointList(
889 ULONG Argc,
890 PCHAR Argv[])
891 {
892 LONG l;
893 ULONG_PTR Address = 0;
894 KDB_BREAKPOINT_TYPE Type = 0;
895 KDB_ACCESS_TYPE AccessType = 0;
896 UCHAR Size = 0;
897 UCHAR DebugReg = 0;
898 BOOLEAN Enabled = FALSE;
899 BOOLEAN Global = FALSE;
900 PEPROCESS Process = NULL;
901 PCHAR str1, str2, ConditionExpr, GlobalOrLocal;
902 CHAR Buffer[20];
903
904 l = KdbpGetNextBreakPointNr(0);
905 if (l < 0)
906 {
907 KdbpPrint("No breakpoints.\n");
908 return TRUE;
909 }
910
911 KdbpPrint("Breakpoints:\n");
912 do
913 {
914 if (!KdbpGetBreakPointInfo(l, &Address, &Type, &Size, &AccessType, &DebugReg,
915 &Enabled, &Global, &Process, &ConditionExpr))
916 {
917 continue;
918 }
919
920 if (l == KdbLastBreakPointNr)
921 {
922 str1 = "\x1b[1m*";
923 str2 = "\x1b[0m";
924 }
925 else
926 {
927 str1 = " ";
928 str2 = "";
929 }
930
931 if (Global)
932 {
933 GlobalOrLocal = " global";
934 }
935 else
936 {
937 GlobalOrLocal = Buffer;
938 sprintf(Buffer, " PID 0x%08lx",
939 (ULONG)(Process ? Process->UniqueProcessId : INVALID_HANDLE_VALUE));
940 }
941
942 if (Type == KdbBreakPointSoftware || Type == KdbBreakPointTemporary)
943 {
944 KdbpPrint(" %s%03d BPX 0x%08x%s%s%s%s%s\n",
945 str1, l, Address,
946 Enabled ? "" : " disabled",
947 GlobalOrLocal,
948 ConditionExpr ? " IF " : "",
949 ConditionExpr ? ConditionExpr : "",
950 str2);
951 }
952 else if (Type == KdbBreakPointHardware)
953 {
954 if (!Enabled)
955 {
956 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s disabled%s%s%s%s\n", str1, l, Address,
957 KDB_ACCESS_TYPE_TO_STRING(AccessType),
958 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
959 GlobalOrLocal,
960 ConditionExpr ? " IF " : "",
961 ConditionExpr ? ConditionExpr : "",
962 str2);
963 }
964 else
965 {
966 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s DR%d%s%s%s%s\n", str1, l, Address,
967 KDB_ACCESS_TYPE_TO_STRING(AccessType),
968 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
969 DebugReg,
970 GlobalOrLocal,
971 ConditionExpr ? " IF " : "",
972 ConditionExpr ? ConditionExpr : "",
973 str2);
974 }
975 }
976 }
977 while ((l = KdbpGetNextBreakPointNr(l+1)) >= 0);
978
979 return TRUE;
980 }
981
982 /*!\brief Enables, disables or clears a breakpoint.
983 */
984 static BOOLEAN
985 KdbpCmdEnableDisableClearBreakPoint(
986 ULONG Argc,
987 PCHAR Argv[])
988 {
989 PCHAR pend;
990 ULONG BreakPointNr;
991
992 if (Argc < 2)
993 {
994 KdbpPrint("%s: argument required\n", Argv[0]);
995 return TRUE;
996 }
997
998 pend = Argv[1];
999 BreakPointNr = strtoul(Argv[1], &pend, 0);
1000 if (pend == Argv[1] || *pend != '\0')
1001 {
1002 KdbpPrint("%s: integer argument required\n", Argv[0]);
1003 return TRUE;
1004 }
1005
1006 if (Argv[0][1] == 'e') /* enable */
1007 {
1008 KdbpEnableBreakPoint(BreakPointNr, NULL);
1009 }
1010 else if (Argv [0][1] == 'd') /* disable */
1011 {
1012 KdbpDisableBreakPoint(BreakPointNr, NULL);
1013 }
1014 else /* clear */
1015 {
1016 ASSERT(Argv[0][1] == 'c');
1017 KdbpDeleteBreakPoint(BreakPointNr, NULL);
1018 }
1019
1020 return TRUE;
1021 }
1022
1023 /*!\brief Sets a software or hardware (memory) breakpoint at the given address.
1024 */
1025 static BOOLEAN
1026 KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[])
1027 {
1028 ULONGLONG Result = 0;
1029 ULONG_PTR Address;
1030 KDB_BREAKPOINT_TYPE Type;
1031 UCHAR Size = 0;
1032 KDB_ACCESS_TYPE AccessType = 0;
1033 ULONG AddressArgIndex, i;
1034 LONG ConditionArgIndex;
1035 BOOLEAN Global = TRUE;
1036
1037 if (Argv[0][2] == 'x') /* software breakpoint */
1038 {
1039 if (Argc < 2)
1040 {
1041 KdbpPrint("bpx: Address argument required.\n");
1042 return TRUE;
1043 }
1044
1045 AddressArgIndex = 1;
1046 Type = KdbBreakPointSoftware;
1047 }
1048 else /* memory breakpoint */
1049 {
1050 ASSERT(Argv[0][2] == 'm');
1051
1052 if (Argc < 2)
1053 {
1054 KdbpPrint("bpm: Access type argument required (one of r, w, rw, x)\n");
1055 return TRUE;
1056 }
1057
1058 if (_stricmp(Argv[1], "x") == 0)
1059 AccessType = KdbAccessExec;
1060 else if (_stricmp(Argv[1], "r") == 0)
1061 AccessType = KdbAccessRead;
1062 else if (_stricmp(Argv[1], "w") == 0)
1063 AccessType = KdbAccessWrite;
1064 else if (_stricmp(Argv[1], "rw") == 0)
1065 AccessType = KdbAccessReadWrite;
1066 else
1067 {
1068 KdbpPrint("bpm: Unknown access type '%s'\n", Argv[1]);
1069 return TRUE;
1070 }
1071
1072 if (Argc < 3)
1073 {
1074 KdbpPrint("bpm: %s argument required.\n", AccessType == KdbAccessExec ? "Address" : "Memory size");
1075 return TRUE;
1076 }
1077
1078 AddressArgIndex = 3;
1079 if (_stricmp(Argv[2], "byte") == 0)
1080 Size = 1;
1081 else if (_stricmp(Argv[2], "word") == 0)
1082 Size = 2;
1083 else if (_stricmp(Argv[2], "dword") == 0)
1084 Size = 4;
1085 else if (AccessType == KdbAccessExec)
1086 {
1087 Size = 1;
1088 AddressArgIndex--;
1089 }
1090 else
1091 {
1092 KdbpPrint("bpm: Unknown memory size '%s'\n", Argv[2]);
1093 return TRUE;
1094 }
1095
1096 if (Argc <= AddressArgIndex)
1097 {
1098 KdbpPrint("bpm: Address argument required.\n");
1099 return TRUE;
1100 }
1101
1102 Type = KdbBreakPointHardware;
1103 }
1104
1105 /* Put the arguments back together */
1106 ConditionArgIndex = -1;
1107 for (i = AddressArgIndex; i < (Argc-1); i++)
1108 {
1109 if (strcmp(Argv[i+1], "IF") == 0) /* IF found */
1110 {
1111 ConditionArgIndex = i + 2;
1112 if (ConditionArgIndex >= Argc)
1113 {
1114 KdbpPrint("%s: IF requires condition expression.\n", Argv[0]);
1115 return TRUE;
1116 }
1117
1118 for (i = ConditionArgIndex; i < (Argc-1); i++)
1119 Argv[i][strlen(Argv[i])] = ' ';
1120
1121 break;
1122 }
1123
1124 Argv[i][strlen(Argv[i])] = ' ';
1125 }
1126
1127 /* Evaluate the address expression */
1128 if (!KdbpEvaluateExpression(Argv[AddressArgIndex],
1129 sizeof("kdb:> ")-1 + (Argv[AddressArgIndex]-Argv[0]),
1130 &Result))
1131 {
1132 return TRUE;
1133 }
1134
1135 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1136 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0]);
1137
1138 Address = (ULONG_PTR)Result;
1139
1140 KdbpInsertBreakPoint(Address, Type, Size, AccessType,
1141 (ConditionArgIndex < 0) ? NULL : Argv[ConditionArgIndex],
1142 Global, NULL);
1143
1144 return TRUE;
1145 }
1146
1147 /*!\brief Lists threads or switches to another thread context.
1148 */
1149 static BOOLEAN
1150 KdbpCmdThread(
1151 ULONG Argc,
1152 PCHAR Argv[])
1153 {
1154 PLIST_ENTRY Entry;
1155 PETHREAD Thread = NULL;
1156 PEPROCESS Process = NULL;
1157 BOOLEAN ReferencedThread = FALSE, ReferencedProcess = FALSE;
1158 PULONG Esp;
1159 PULONG Ebp;
1160 ULONG Eip;
1161 ULONG ul = 0;
1162 PCHAR State, pend, str1, str2;
1163 static const PCHAR ThreadStateToString[DeferredReady+1] =
1164 {
1165 "Initialized", "Ready", "Running",
1166 "Standby", "Terminated", "Waiting",
1167 "Transition", "DeferredReady"
1168 };
1169
1170 ASSERT(KdbCurrentProcess);
1171
1172 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1173 {
1174 Process = KdbCurrentProcess;
1175
1176 if (Argc >= 3)
1177 {
1178 ul = strtoul(Argv[2], &pend, 0);
1179 if (Argv[2] == pend)
1180 {
1181 KdbpPrint("thread: '%s' is not a valid process id!\n", Argv[2]);
1182 return TRUE;
1183 }
1184
1185 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1186 {
1187 KdbpPrint("thread: Invalid process id!\n");
1188 return TRUE;
1189 }
1190
1191 /* Remember our reference */
1192 ReferencedProcess = TRUE;
1193 }
1194
1195 Entry = Process->ThreadListHead.Flink;
1196 if (Entry == &Process->ThreadListHead)
1197 {
1198 if (Argc >= 3)
1199 KdbpPrint("No threads in process 0x%08x!\n", ul);
1200 else
1201 KdbpPrint("No threads in current process!\n");
1202
1203 if (ReferencedProcess)
1204 ObDereferenceObject(Process);
1205
1206 return TRUE;
1207 }
1208
1209 KdbpPrint(" TID State Prior. Affinity EBP EIP\n");
1210 do
1211 {
1212 Thread = CONTAINING_RECORD(Entry, ETHREAD, ThreadListEntry);
1213
1214 if (Thread == KdbCurrentThread)
1215 {
1216 str1 = "\x1b[1m*";
1217 str2 = "\x1b[0m";
1218 }
1219 else
1220 {
1221 str1 = " ";
1222 str2 = "";
1223 }
1224
1225 if (Thread->Tcb.TrapFrame)
1226 {
1227 if (Thread->Tcb.TrapFrame->PreviousPreviousMode == KernelMode)
1228 Esp = (PULONG)Thread->Tcb.TrapFrame->TempEsp;
1229 else
1230 Esp = (PULONG)Thread->Tcb.TrapFrame->HardwareEsp;
1231
1232 Ebp = (PULONG)Thread->Tcb.TrapFrame->Ebp;
1233 Eip = Thread->Tcb.TrapFrame->Eip;
1234 }
1235 else
1236 {
1237 Esp = (PULONG)Thread->Tcb.KernelStack;
1238 Ebp = (PULONG)Esp[4];
1239 Eip = 0;
1240
1241 if (Ebp) /* FIXME: Should we attach to the process to read Ebp[1]? */
1242 KdbpSafeReadMemory(&Eip, Ebp + 1, sizeof (Eip));
1243 }
1244
1245 if (Thread->Tcb.State < (DeferredReady + 1))
1246 State = ThreadStateToString[Thread->Tcb.State];
1247 else
1248 State = "Unknown";
1249
1250 KdbpPrint(" %s0x%08x %-11s %3d 0x%08x 0x%08x 0x%08x%s\n",
1251 str1,
1252 Thread->Cid.UniqueThread,
1253 State,
1254 Thread->Tcb.Priority,
1255 Thread->Tcb.Affinity,
1256 Ebp,
1257 Eip,
1258 str2);
1259
1260 Entry = Entry->Flink;
1261 }
1262 while (Entry != &Process->ThreadListHead);
1263
1264 /* Release our reference, if any */
1265 if (ReferencedProcess)
1266 ObDereferenceObject(Process);
1267 }
1268 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1269 {
1270 if (Argc < 3)
1271 {
1272 KdbpPrint("thread attach: thread id argument required!\n");
1273 return TRUE;
1274 }
1275
1276 ul = strtoul(Argv[2], &pend, 0);
1277 if (Argv[2] == pend)
1278 {
1279 KdbpPrint("thread attach: '%s' is not a valid thread id!\n", Argv[2]);
1280 return TRUE;
1281 }
1282
1283 if (!KdbpAttachToThread((PVOID)ul))
1284 {
1285 return TRUE;
1286 }
1287
1288 KdbpPrint("Attached to thread 0x%08x.\n", ul);
1289 }
1290 else
1291 {
1292 Thread = KdbCurrentThread;
1293
1294 if (Argc >= 2)
1295 {
1296 ul = strtoul(Argv[1], &pend, 0);
1297 if (Argv[1] == pend)
1298 {
1299 KdbpPrint("thread: '%s' is not a valid thread id!\n", Argv[1]);
1300 return TRUE;
1301 }
1302
1303 if (!NT_SUCCESS(PsLookupThreadByThreadId((PVOID)ul, &Thread)))
1304 {
1305 KdbpPrint("thread: Invalid thread id!\n");
1306 return TRUE;
1307 }
1308
1309 /* Remember our reference */
1310 ReferencedThread = TRUE;
1311 }
1312
1313 if (Thread->Tcb.State < (DeferredReady + 1))
1314 State = ThreadStateToString[Thread->Tcb.State];
1315 else
1316 State = "Unknown";
1317
1318 KdbpPrint("%s"
1319 " TID: 0x%08x\n"
1320 " State: %s (0x%x)\n"
1321 " Priority: %d\n"
1322 " Affinity: 0x%08x\n"
1323 " Initial Stack: 0x%08x\n"
1324 " Stack Limit: 0x%08x\n"
1325 " Stack Base: 0x%08x\n"
1326 " Kernel Stack: 0x%08x\n"
1327 " Trap Frame: 0x%08x\n"
1328 " NPX State: %s (0x%x)\n",
1329 (Argc < 2) ? "Current Thread:\n" : "",
1330 Thread->Cid.UniqueThread,
1331 State, Thread->Tcb.State,
1332 Thread->Tcb.Priority,
1333 Thread->Tcb.Affinity,
1334 Thread->Tcb.InitialStack,
1335 Thread->Tcb.StackLimit,
1336 Thread->Tcb.StackBase,
1337 Thread->Tcb.KernelStack,
1338 Thread->Tcb.TrapFrame,
1339 NPX_STATE_TO_STRING(Thread->Tcb.NpxState), Thread->Tcb.NpxState);
1340
1341 /* Release our reference if we had one */
1342 if (ReferencedThread)
1343 ObDereferenceObject(Thread);
1344 }
1345
1346 return TRUE;
1347 }
1348
1349 /*!\brief Lists processes or switches to another process context.
1350 */
1351 static BOOLEAN
1352 KdbpCmdProc(
1353 ULONG Argc,
1354 PCHAR Argv[])
1355 {
1356 PLIST_ENTRY Entry;
1357 PEPROCESS Process;
1358 BOOLEAN ReferencedProcess = FALSE;
1359 PCHAR State, pend, str1, str2;
1360 ULONG ul;
1361 extern LIST_ENTRY PsActiveProcessHead;
1362
1363 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1364 {
1365 Entry = PsActiveProcessHead.Flink;
1366 if (!Entry || Entry == &PsActiveProcessHead)
1367 {
1368 KdbpPrint("No processes in the system!\n");
1369 return TRUE;
1370 }
1371
1372 KdbpPrint(" PID State Filename\n");
1373 do
1374 {
1375 Process = CONTAINING_RECORD(Entry, EPROCESS, ActiveProcessLinks);
1376
1377 if (Process == KdbCurrentProcess)
1378 {
1379 str1 = "\x1b[1m*";
1380 str2 = "\x1b[0m";
1381 }
1382 else
1383 {
1384 str1 = " ";
1385 str2 = "";
1386 }
1387
1388 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1389 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1390
1391 KdbpPrint(" %s0x%08x %-10s %s%s\n",
1392 str1,
1393 Process->UniqueProcessId,
1394 State,
1395 Process->ImageFileName,
1396 str2);
1397
1398 Entry = Entry->Flink;
1399 }
1400 while(Entry != &PsActiveProcessHead);
1401 }
1402 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1403 {
1404 if (Argc < 3)
1405 {
1406 KdbpPrint("process attach: process id argument required!\n");
1407 return TRUE;
1408 }
1409
1410 ul = strtoul(Argv[2], &pend, 0);
1411 if (Argv[2] == pend)
1412 {
1413 KdbpPrint("process attach: '%s' is not a valid process id!\n", Argv[2]);
1414 return TRUE;
1415 }
1416
1417 if (!KdbpAttachToProcess((PVOID)ul))
1418 {
1419 return TRUE;
1420 }
1421
1422 KdbpPrint("Attached to process 0x%08x, thread 0x%08x.\n", (ULONG)ul,
1423 (ULONG)KdbCurrentThread->Cid.UniqueThread);
1424 }
1425 else
1426 {
1427 Process = KdbCurrentProcess;
1428
1429 if (Argc >= 2)
1430 {
1431 ul = strtoul(Argv[1], &pend, 0);
1432 if (Argv[1] == pend)
1433 {
1434 KdbpPrint("proc: '%s' is not a valid process id!\n", Argv[1]);
1435 return TRUE;
1436 }
1437
1438 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1439 {
1440 KdbpPrint("proc: Invalid process id!\n");
1441 return TRUE;
1442 }
1443
1444 /* Remember our reference */
1445 ReferencedProcess = TRUE;
1446 }
1447
1448 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1449 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1450 KdbpPrint("%s"
1451 " PID: 0x%08x\n"
1452 " State: %s (0x%x)\n"
1453 " Image Filename: %s\n",
1454 (Argc < 2) ? "Current process:\n" : "",
1455 Process->UniqueProcessId,
1456 State, Process->Pcb.State,
1457 Process->ImageFileName);
1458
1459 /* Release our reference, if any */
1460 if (ReferencedProcess)
1461 ObDereferenceObject(Process);
1462 }
1463
1464 return TRUE;
1465 }
1466
1467 /*!\brief Lists loaded modules or the one containing the specified address.
1468 */
1469 static BOOLEAN
1470 KdbpCmdMod(
1471 ULONG Argc,
1472 PCHAR Argv[])
1473 {
1474 ULONGLONG Result = 0;
1475 ULONG_PTR Address;
1476 PLDR_DATA_TABLE_ENTRY LdrEntry;
1477 BOOLEAN DisplayOnlyOneModule = FALSE;
1478 INT i = 0;
1479
1480 if (Argc >= 2)
1481 {
1482 /* Put the arguments back together */
1483 Argc--;
1484 while (--Argc >= 1)
1485 Argv[Argc][strlen(Argv[Argc])] = ' ';
1486
1487 /* Evaluate the expression */
1488 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
1489 {
1490 return TRUE;
1491 }
1492
1493 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1494 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0]);
1495
1496 Address = (ULONG_PTR)Result;
1497
1498 if (!KdbpSymFindModule((PVOID)Address, NULL, -1, &LdrEntry))
1499 {
1500 KdbpPrint("No module containing address 0x%p found!\n", Address);
1501 return TRUE;
1502 }
1503
1504 DisplayOnlyOneModule = TRUE;
1505 }
1506 else
1507 {
1508 if (!KdbpSymFindModule(NULL, NULL, 0, &LdrEntry))
1509 {
1510 ULONG_PTR ntoskrnlBase = ((ULONG_PTR)KdbpCmdMod) & 0xfff00000;
1511 KdbpPrint(" Base Size Name\n");
1512 KdbpPrint(" %08x %08x %s\n", ntoskrnlBase, 0, "ntoskrnl.exe");
1513 return TRUE;
1514 }
1515
1516 i = 1;
1517 }
1518
1519 KdbpPrint(" Base Size Name\n");
1520 for (;;)
1521 {
1522 KdbpPrint(" %08x %08x %wZ\n", LdrEntry->DllBase, LdrEntry->SizeOfImage, &LdrEntry->BaseDllName);
1523
1524 if(DisplayOnlyOneModule || !KdbpSymFindModule(NULL, NULL, i++, &LdrEntry))
1525 break;
1526 }
1527
1528 return TRUE;
1529 }
1530
1531 /*!\brief Displays GDT, LDT or IDTd.
1532 */
1533 static BOOLEAN
1534 KdbpCmdGdtLdtIdt(
1535 ULONG Argc,
1536 PCHAR Argv[])
1537 {
1538 KDESCRIPTOR Reg;
1539 ULONG SegDesc[2];
1540 ULONG SegBase;
1541 ULONG SegLimit;
1542 PCHAR SegType;
1543 USHORT SegSel;
1544 UCHAR Type, Dpl;
1545 INT i;
1546 ULONG ul;
1547
1548 if (Argv[0][0] == 'i')
1549 {
1550 /* Read IDTR */
1551 __sidt(&Reg.Limit);
1552
1553 if (Reg.Limit < 7)
1554 {
1555 KdbpPrint("Interrupt descriptor table is empty.\n");
1556 return TRUE;
1557 }
1558
1559 KdbpPrint("IDT Base: 0x%08x Limit: 0x%04x\n", Reg.Base, Reg.Limit);
1560 KdbpPrint(" Idx Type Seg. Sel. Offset DPL\n");
1561
1562 for (i = 0; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1563 {
1564 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1565 {
1566 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1567 return TRUE;
1568 }
1569
1570 Dpl = ((SegDesc[1] >> 13) & 3);
1571 if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1572 SegType = "TASKGATE";
1573 else if ((SegDesc[1] & 0x1fe0) == 0x0e00) /* 32 bit Interrupt gate */
1574 SegType = "INTGATE32";
1575 else if ((SegDesc[1] & 0x1fe0) == 0x0600) /* 16 bit Interrupt gate */
1576 SegType = "INTGATE16";
1577 else if ((SegDesc[1] & 0x1fe0) == 0x0f00) /* 32 bit Trap gate */
1578 SegType = "TRAPGATE32";
1579 else if ((SegDesc[1] & 0x1fe0) == 0x0700) /* 16 bit Trap gate */
1580 SegType = "TRAPGATE16";
1581 else
1582 SegType = "UNKNOWN";
1583
1584 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1585 {
1586 KdbpPrint(" %03d %-10s [NP] [NP] %02d\n",
1587 i / 8, SegType, Dpl);
1588 }
1589 else if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1590 {
1591 SegSel = SegDesc[0] >> 16;
1592 KdbpPrint(" %03d %-10s 0x%04x %02d\n",
1593 i / 8, SegType, SegSel, Dpl);
1594 }
1595 else
1596 {
1597 SegSel = SegDesc[0] >> 16;
1598 SegBase = (SegDesc[1] & 0xffff0000) | (SegDesc[0] & 0x0000ffff);
1599 KdbpPrint(" %03d %-10s 0x%04x 0x%08x %02d\n",
1600 i / 8, SegType, SegSel, SegBase, Dpl);
1601 }
1602 }
1603 }
1604 else
1605 {
1606 ul = 0;
1607
1608 if (Argv[0][0] == 'g')
1609 {
1610 /* Read GDTR */
1611 Ke386GetGlobalDescriptorTable(&Reg.Limit);
1612 i = 8;
1613 }
1614 else
1615 {
1616 ASSERT(Argv[0][0] == 'l');
1617
1618 /* Read LDTR */
1619 Reg.Limit = Ke386GetLocalDescriptorTable();
1620 Reg.Base = 0;
1621 i = 0;
1622 ul = 1 << 2;
1623 }
1624
1625 if (Reg.Limit < 7)
1626 {
1627 KdbpPrint("%s descriptor table is empty.\n",
1628 Argv[0][0] == 'g' ? "Global" : "Local");
1629 return TRUE;
1630 }
1631
1632 KdbpPrint("%cDT Base: 0x%08x Limit: 0x%04x\n",
1633 Argv[0][0] == 'g' ? 'G' : 'L', Reg.Base, Reg.Limit);
1634 KdbpPrint(" Idx Sel. Type Base Limit DPL Attribs\n");
1635
1636 for (; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1637 {
1638 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1639 {
1640 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1641 return TRUE;
1642 }
1643
1644 Dpl = ((SegDesc[1] >> 13) & 3);
1645 Type = ((SegDesc[1] >> 8) & 0xf);
1646
1647 SegBase = SegDesc[0] >> 16;
1648 SegBase |= (SegDesc[1] & 0xff) << 16;
1649 SegBase |= SegDesc[1] & 0xff000000;
1650 SegLimit = SegDesc[0] & 0x0000ffff;
1651 SegLimit |= (SegDesc[1] >> 16) & 0xf;
1652
1653 if ((SegDesc[1] & (1 << 23)) != 0)
1654 {
1655 SegLimit *= 4096;
1656 SegLimit += 4095;
1657 }
1658 else
1659 {
1660 SegLimit++;
1661 }
1662
1663 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1664 {
1665 switch (Type)
1666 {
1667 case 1: SegType = "TSS16(Avl)"; break;
1668 case 2: SegType = "LDT"; break;
1669 case 3: SegType = "TSS16(Busy)"; break;
1670 case 4: SegType = "CALLGATE16"; break;
1671 case 5: SegType = "TASKGATE"; break;
1672 case 6: SegType = "INTGATE16"; break;
1673 case 7: SegType = "TRAPGATE16"; break;
1674 case 9: SegType = "TSS32(Avl)"; break;
1675 case 11: SegType = "TSS32(Busy)"; break;
1676 case 12: SegType = "CALLGATE32"; break;
1677 case 14: SegType = "INTGATE32"; break;
1678 case 15: SegType = "INTGATE32"; break;
1679 default: SegType = "UNKNOWN"; break;
1680 }
1681
1682 if (!(Type >= 1 && Type <= 3) &&
1683 Type != 9 && Type != 11)
1684 {
1685 SegBase = 0;
1686 SegLimit = 0;
1687 }
1688 }
1689 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1690 {
1691 if ((SegDesc[1] & (1 << 22)) != 0)
1692 SegType = "DATA32";
1693 else
1694 SegType = "DATA16";
1695 }
1696 else /* Code segment */
1697 {
1698 if ((SegDesc[1] & (1 << 22)) != 0)
1699 SegType = "CODE32";
1700 else
1701 SegType = "CODE16";
1702 }
1703
1704 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1705 {
1706 KdbpPrint(" %03d 0x%04x %-11s [NP] [NP] %02d NP\n",
1707 i / 8, i | Dpl | ul, SegType, Dpl);
1708 }
1709 else
1710 {
1711 KdbpPrint(" %03d 0x%04x %-11s 0x%08x 0x%08x %02d ",
1712 i / 8, i | Dpl | ul, SegType, SegBase, SegLimit, Dpl);
1713
1714 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1715 {
1716 /* FIXME: Display system segment */
1717 }
1718 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1719 {
1720 if ((SegDesc[1] & (1 << 10)) != 0) /* Expand-down */
1721 KdbpPrint(" E");
1722
1723 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/W" : " R");
1724
1725 if ((SegDesc[1] & (1 << 8)) != 0)
1726 KdbpPrint(" A");
1727 }
1728 else /* Code segment */
1729 {
1730 if ((SegDesc[1] & (1 << 10)) != 0) /* Conforming */
1731 KdbpPrint(" C");
1732
1733 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/X" : " X");
1734
1735 if ((SegDesc[1] & (1 << 8)) != 0)
1736 KdbpPrint(" A");
1737 }
1738
1739 if ((SegDesc[1] & (1 << 20)) != 0)
1740 KdbpPrint(" AVL");
1741
1742 KdbpPrint("\n");
1743 }
1744 }
1745 }
1746
1747 return TRUE;
1748 }
1749
1750 /*!\brief Displays the KPCR
1751 */
1752 static BOOLEAN
1753 KdbpCmdPcr(
1754 ULONG Argc,
1755 PCHAR Argv[])
1756 {
1757 PKIPCR Pcr = (PKIPCR)KeGetPcr();
1758
1759 KdbpPrint("Current PCR is at 0x%08x.\n", (INT)Pcr);
1760 KdbpPrint(" Tib.ExceptionList: 0x%08x\n"
1761 " Tib.StackBase: 0x%08x\n"
1762 " Tib.StackLimit: 0x%08x\n"
1763 " Tib.SubSystemTib: 0x%08x\n"
1764 " Tib.FiberData/Version: 0x%08x\n"
1765 " Tib.ArbitraryUserPointer: 0x%08x\n"
1766 " Tib.Self: 0x%08x\n"
1767 " Self: 0x%08x\n"
1768 " PCRCB: 0x%08x\n"
1769 " Irql: 0x%02x\n"
1770 " IRR: 0x%08x\n"
1771 " IrrActive: 0x%08x\n"
1772 " IDR: 0x%08x\n"
1773 " KdVersionBlock: 0x%08x\n"
1774 " IDT: 0x%08x\n"
1775 " GDT: 0x%08x\n"
1776 " TSS: 0x%08x\n"
1777 " MajorVersion: 0x%04x\n"
1778 " MinorVersion: 0x%04x\n"
1779 " SetMember: 0x%08x\n"
1780 " StallScaleFactor: 0x%08x\n"
1781 " Number: 0x%02x\n"
1782 " L2CacheAssociativity: 0x%02x\n"
1783 " VdmAlert: 0x%08x\n"
1784 " L2CacheSize: 0x%08x\n"
1785 " InterruptMode: 0x%08x\n",
1786 Pcr->NtTib.ExceptionList, Pcr->NtTib.StackBase, Pcr->NtTib.StackLimit,
1787 Pcr->NtTib.SubSystemTib, Pcr->NtTib.FiberData, Pcr->NtTib.ArbitraryUserPointer,
1788 Pcr->NtTib.Self, Pcr->Self, Pcr->Prcb, Pcr->Irql, Pcr->IRR, Pcr->IrrActive,
1789 Pcr->IDR, Pcr->KdVersionBlock, Pcr->IDT, Pcr->GDT, Pcr->TSS,
1790 Pcr->MajorVersion, Pcr->MinorVersion, Pcr->SetMember, Pcr->StallScaleFactor,
1791 Pcr->Number, Pcr->L2CacheAssociativity,
1792 Pcr->VdmAlert, Pcr->SecondLevelCacheSize, Pcr->InterruptMode);
1793
1794 return TRUE;
1795 }
1796
1797 /*!\brief Displays the TSS
1798 */
1799 static BOOLEAN
1800 KdbpCmdTss(
1801 ULONG Argc,
1802 PCHAR Argv[])
1803 {
1804 KTSS *Tss = KeGetPcr()->TSS;
1805
1806 KdbpPrint("Current TSS is at 0x%08x.\n", (INT)Tss);
1807 KdbpPrint(" Eip: 0x%08x\n"
1808 " Es: 0x%04x\n"
1809 " Cs: 0x%04x\n"
1810 " Ss: 0x%04x\n"
1811 " Ds: 0x%04x\n"
1812 " Fs: 0x%04x\n"
1813 " Gs: 0x%04x\n"
1814 " IoMapBase: 0x%04x\n",
1815 Tss->Eip, Tss->Es, Tss->Cs, Tss->Ds, Tss->Fs, Tss->Gs, Tss->IoMapBase);
1816
1817 return TRUE;
1818 }
1819
1820 /*!\brief Bugchecks the system.
1821 */
1822 static BOOLEAN
1823 KdbpCmdBugCheck(
1824 ULONG Argc,
1825 PCHAR Argv[])
1826 {
1827 /* Set the flag and quit looping */
1828 KdbpBugCheckRequested = TRUE;
1829
1830 return FALSE;
1831 }
1832
1833 /*!\brief Sets or displays a config variables value.
1834 */
1835 static BOOLEAN
1836 KdbpCmdSet(
1837 ULONG Argc,
1838 PCHAR Argv[])
1839 {
1840 LONG l;
1841 BOOLEAN First;
1842 PCHAR pend = 0;
1843 KDB_ENTER_CONDITION ConditionFirst = KdbDoNotEnter;
1844 KDB_ENTER_CONDITION ConditionLast = KdbDoNotEnter;
1845
1846 static const PCHAR ExceptionNames[21] =
1847 {
1848 "ZERODEVIDE", "DEBUGTRAP", "NMI", "INT3", "OVERFLOW", "BOUND", "INVALIDOP",
1849 "NOMATHCOP", "DOUBLEFAULT", "RESERVED(9)", "INVALIDTSS", "SEGMENTNOTPRESENT",
1850 "STACKFAULT", "GPF", "PAGEFAULT", "RESERVED(15)", "MATHFAULT", "ALIGNMENTCHECK",
1851 "MACHINECHECK", "SIMDFAULT", "OTHERS"
1852 };
1853
1854 if (Argc == 1)
1855 {
1856 KdbpPrint("Available settings:\n");
1857 KdbpPrint(" syntax [intel|at&t]\n");
1858 KdbpPrint(" condition [exception|*] [first|last] [never|always|kmode|umode]\n");
1859 KdbpPrint(" break_on_module_load [true|false]\n");
1860 }
1861 else if (strcmp(Argv[1], "syntax") == 0)
1862 {
1863 if (Argc == 2)
1864 {
1865 KdbpPrint("syntax = %s\n", KdbUseIntelSyntax ? "intel" : "at&t");
1866 }
1867 else if (Argc >= 3)
1868 {
1869 if (_stricmp(Argv[2], "intel") == 0)
1870 KdbUseIntelSyntax = TRUE;
1871 else if (_stricmp(Argv[2], "at&t") == 0)
1872 KdbUseIntelSyntax = FALSE;
1873 else
1874 KdbpPrint("Unknown syntax '%s'.\n", Argv[2]);
1875 }
1876 }
1877 else if (strcmp(Argv[1], "condition") == 0)
1878 {
1879 if (Argc == 2)
1880 {
1881 KdbpPrint("Conditions: (First) (Last)\n");
1882 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames) - 1; l++)
1883 {
1884 if (!ExceptionNames[l])
1885 continue;
1886
1887 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
1888 ASSERT(0);
1889
1890 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
1891 ASSERT(0);
1892
1893 KdbpPrint(" #%02d %-20s %-8s %-8s\n", l, ExceptionNames[l],
1894 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1895 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1896 }
1897
1898 ASSERT(l == (RTL_NUMBER_OF(ExceptionNames) - 1));
1899 KdbpPrint(" %-20s %-8s %-8s\n", ExceptionNames[l],
1900 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1901 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1902 }
1903 else
1904 {
1905 if (Argc >= 5 && strcmp(Argv[2], "*") == 0) /* Allow * only when setting condition */
1906 {
1907 l = -1;
1908 }
1909 else
1910 {
1911 l = strtoul(Argv[2], &pend, 0);
1912
1913 if (Argv[2] == pend)
1914 {
1915 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames); l++)
1916 {
1917 if (!ExceptionNames[l])
1918 continue;
1919
1920 if (_stricmp(ExceptionNames[l], Argv[2]) == 0)
1921 break;
1922 }
1923 }
1924
1925 if (l >= RTL_NUMBER_OF(ExceptionNames))
1926 {
1927 KdbpPrint("Unknown exception '%s'.\n", Argv[2]);
1928 return TRUE;
1929 }
1930 }
1931
1932 if (Argc > 4)
1933 {
1934 if (_stricmp(Argv[3], "first") == 0)
1935 First = TRUE;
1936 else if (_stricmp(Argv[3], "last") == 0)
1937 First = FALSE;
1938 else
1939 {
1940 KdbpPrint("set condition: second argument must be 'first' or 'last'\n");
1941 return TRUE;
1942 }
1943
1944 if (_stricmp(Argv[4], "never") == 0)
1945 ConditionFirst = KdbDoNotEnter;
1946 else if (_stricmp(Argv[4], "always") == 0)
1947 ConditionFirst = KdbEnterAlways;
1948 else if (_stricmp(Argv[4], "umode") == 0)
1949 ConditionFirst = KdbEnterFromUmode;
1950 else if (_stricmp(Argv[4], "kmode") == 0)
1951 ConditionFirst = KdbEnterFromKmode;
1952 else
1953 {
1954 KdbpPrint("set condition: third argument must be 'never', 'always', 'umode' or 'kmode'\n");
1955 return TRUE;
1956 }
1957
1958 if (!KdbpSetEnterCondition(l, First, ConditionFirst))
1959 {
1960 if (l >= 0)
1961 KdbpPrint("Couldn't change condition for exception #%02d\n", l);
1962 else
1963 KdbpPrint("Couldn't change condition for all exceptions\n", l);
1964 }
1965 }
1966 else /* Argc >= 3 */
1967 {
1968 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
1969 ASSERT(0);
1970
1971 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
1972 ASSERT(0);
1973
1974 if (l < (RTL_NUMBER_OF(ExceptionNames) - 1))
1975 {
1976 KdbpPrint("Condition for exception #%02d (%s): FirstChance %s LastChance %s\n",
1977 l, ExceptionNames[l],
1978 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1979 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1980 }
1981 else
1982 {
1983 KdbpPrint("Condition for all other exceptions: FirstChance %s LastChance %s\n",
1984 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1985 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1986 }
1987 }
1988 }
1989 }
1990 else if (strcmp(Argv[1], "break_on_module_load") == 0)
1991 {
1992 if (Argc == 2)
1993 KdbpPrint("break_on_module_load = %s\n", KdbBreakOnModuleLoad ? "enabled" : "disabled");
1994 else if (Argc >= 3)
1995 {
1996 if (_stricmp(Argv[2], "enable") == 0 || _stricmp(Argv[2], "enabled") == 0 || _stricmp(Argv[2], "true") == 0)
1997 KdbBreakOnModuleLoad = TRUE;
1998 else if (_stricmp(Argv[2], "disable") == 0 || _stricmp(Argv[2], "disabled") == 0 || _stricmp(Argv[2], "false") == 0)
1999 KdbBreakOnModuleLoad = FALSE;
2000 else
2001 KdbpPrint("Unknown setting '%s'.\n", Argv[2]);
2002 }
2003 }
2004 else
2005 {
2006 KdbpPrint("Unknown setting '%s'.\n", Argv[1]);
2007 }
2008
2009 return TRUE;
2010 }
2011
2012 /*!\brief Displays help screen.
2013 */
2014 static BOOLEAN
2015 KdbpCmdHelp(
2016 ULONG Argc,
2017 PCHAR Argv[])
2018 {
2019 ULONG i;
2020
2021 KdbpPrint("Kernel debugger commands:\n");
2022 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2023 {
2024 if (!KdbDebuggerCommands[i].Syntax) /* Command group */
2025 {
2026 if (i > 0)
2027 KdbpPrint("\n");
2028
2029 KdbpPrint("\x1b[7m* %s:\x1b[0m\n", KdbDebuggerCommands[i].Help);
2030 continue;
2031 }
2032
2033 KdbpPrint(" %-20s - %s\n",
2034 KdbDebuggerCommands[i].Syntax,
2035 KdbDebuggerCommands[i].Help);
2036 }
2037
2038 return TRUE;
2039 }
2040
2041 /*!\brief Prints the given string with printf-like formatting.
2042 *
2043 * \param Format Format of the string/arguments.
2044 * \param ... Variable number of arguments matching the format specified in \a Format.
2045 *
2046 * \note Doesn't correctly handle \\t and terminal escape sequences when calculating the
2047 * number of lines required to print a single line from the Buffer in the terminal.
2048 */
2049 VOID
2050 KdbpPrint(
2051 IN PCHAR Format,
2052 IN ... OPTIONAL)
2053 {
2054 static CHAR Buffer[4096];
2055 static BOOLEAN TerminalInitialized = FALSE;
2056 static BOOLEAN TerminalConnected = FALSE;
2057 static BOOLEAN TerminalReportsSize = TRUE;
2058 CHAR c = '\0';
2059 PCHAR p, p2;
2060 ULONG Length;
2061 ULONG i, j;
2062 LONG RowsPrintedByTerminal;
2063 ULONG ScanCode;
2064 va_list ap;
2065
2066 /* Check if the user has aborted output of the current command */
2067 if (KdbOutputAborted)
2068 return;
2069
2070 /* Initialize the terminal */
2071 if (!TerminalInitialized)
2072 {
2073 DbgPrint("\x1b[7h"); /* Enable linewrap */
2074
2075 /* Query terminal type */
2076 /*DbgPrint("\x1b[Z");*/
2077 DbgPrint("\x05");
2078
2079 TerminalInitialized = TRUE;
2080 Length = 0;
2081 KeStallExecutionProcessor(100000);
2082
2083 for (;;)
2084 {
2085 c = KdbpTryGetCharSerial(5000);
2086 if (c == -1)
2087 break;
2088
2089 Buffer[Length++] = c;
2090 if (Length >= (sizeof (Buffer) - 1))
2091 break;
2092 }
2093
2094 Buffer[Length] = '\0';
2095 if (Length > 0)
2096 TerminalConnected = TRUE;
2097 }
2098
2099 /* Get number of rows and columns in terminal */
2100 if ((KdbNumberOfRowsTerminal < 0) || (KdbNumberOfColsTerminal < 0) ||
2101 (KdbNumberOfRowsPrinted) == 0) /* Refresh terminal size each time when number of rows printed is 0 */
2102 {
2103 if ((KdbDebugState & KD_DEBUG_KDSERIAL) && TerminalConnected && TerminalReportsSize)
2104 {
2105 /* Try to query number of rows from terminal. A reply looks like "\x1b[8;24;80t" */
2106 TerminalReportsSize = FALSE;
2107 KeStallExecutionProcessor(100000);
2108 DbgPrint("\x1b[18t");
2109 c = KdbpTryGetCharSerial(5000);
2110
2111 if (c == KEY_ESC)
2112 {
2113 c = KdbpTryGetCharSerial(5000);
2114 if (c == '[')
2115 {
2116 Length = 0;
2117
2118 for (;;)
2119 {
2120 c = KdbpTryGetCharSerial(5000);
2121 if (c == -1)
2122 break;
2123
2124 Buffer[Length++] = c;
2125 if (isalpha(c) || Length >= (sizeof (Buffer) - 1))
2126 break;
2127 }
2128
2129 Buffer[Length] = '\0';
2130 if (Buffer[0] == '8' && Buffer[1] == ';')
2131 {
2132 for (i = 2; (i < Length) && (Buffer[i] != ';'); i++);
2133
2134 if (Buffer[i] == ';')
2135 {
2136 Buffer[i++] = '\0';
2137
2138 /* Number of rows is now at Buffer + 2 and number of cols at Buffer + i */
2139 KdbNumberOfRowsTerminal = strtoul(Buffer + 2, NULL, 0);
2140 KdbNumberOfColsTerminal = strtoul(Buffer + i, NULL, 0);
2141 TerminalReportsSize = TRUE;
2142 }
2143 }
2144 }
2145 /* Clear further characters */
2146 while ((c = KdbpTryGetCharSerial(5000)) != -1);
2147 }
2148 }
2149
2150 if (KdbNumberOfRowsTerminal <= 0)
2151 {
2152 /* Set number of rows to the default. */
2153 KdbNumberOfRowsTerminal = 24;
2154 }
2155 else if (KdbNumberOfColsTerminal <= 0)
2156 {
2157 /* Set number of cols to the default. */
2158 KdbNumberOfColsTerminal = 80;
2159 }
2160 }
2161
2162 /* Get the string */
2163 va_start(ap, Format);
2164 Length = _vsnprintf(Buffer, sizeof (Buffer) - 1, Format, ap);
2165 Buffer[Length] = '\0';
2166 va_end(ap);
2167
2168 p = Buffer;
2169 while (p[0] != '\0')
2170 {
2171 i = strcspn(p, "\n");
2172
2173 /* Calculate the number of lines which will be printed in the terminal
2174 * when outputting the current line
2175 */
2176 if (i > 0)
2177 RowsPrintedByTerminal = (i + KdbNumberOfColsPrinted - 1) / KdbNumberOfColsTerminal;
2178 else
2179 RowsPrintedByTerminal = 0;
2180
2181 if (p[i] == '\n')
2182 RowsPrintedByTerminal++;
2183
2184 /*DbgPrint("!%d!%d!%d!%d!", KdbNumberOfRowsPrinted, KdbNumberOfColsPrinted, i, RowsPrintedByTerminal);*/
2185
2186 /* Display a prompt if we printed one screen full of text */
2187 if (KdbNumberOfRowsTerminal > 0 &&
2188 (LONG)(KdbNumberOfRowsPrinted + RowsPrintedByTerminal) >= KdbNumberOfRowsTerminal)
2189 {
2190 if (KdbNumberOfColsPrinted > 0)
2191 DbgPrint("\n");
2192
2193 DbgPrint("--- Press q to abort, any other key to continue ---");
2194
2195 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2196 c = KdbpGetCharSerial();
2197 else
2198 c = KdbpGetCharKeyboard(&ScanCode);
2199
2200 if (c == '\r')
2201 {
2202 /* Try to read '\n' which might follow '\r' - if \n is not received here
2203 * it will be interpreted as "return" when the next command should be read.
2204 */
2205 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2206 c = KdbpTryGetCharSerial(5);
2207 else
2208 c = KdbpTryGetCharKeyboard(&ScanCode, 5);
2209 }
2210
2211 DbgPrint("\n");
2212 if (c == 'q')
2213 {
2214 KdbOutputAborted = TRUE;
2215 return;
2216 }
2217
2218 KdbNumberOfRowsPrinted = 0;
2219 KdbNumberOfColsPrinted = 0;
2220 }
2221
2222 /* Insert a NUL after the line and print only the current line. */
2223 if (p[i] == '\n' && p[i + 1] != '\0')
2224 {
2225 c = p[i + 1];
2226 p[i + 1] = '\0';
2227 }
2228 else
2229 {
2230 c = '\0';
2231 }
2232
2233 /* Remove escape sequences from the line if there's no terminal connected */
2234 if (!TerminalConnected)
2235 {
2236 while ((p2 = strrchr(p, '\x1b'))) /* Look for escape character */
2237 {
2238 if (p2[1] == '[')
2239 {
2240 j = 2;
2241 while (!isalpha(p2[j++]));
2242 strcpy(p2, p2 + j);
2243 }
2244 else
2245 {
2246 strcpy(p2, p2 + 1);
2247 }
2248 }
2249 }
2250
2251 DbgPrint("%s", p);
2252
2253 if (c != '\0')
2254 p[i + 1] = c;
2255
2256 /* Set p to the start of the next line and
2257 * remember the number of rows/cols printed
2258 */
2259 p += i;
2260 if (p[0] == '\n')
2261 {
2262 p++;
2263 KdbNumberOfColsPrinted = 0;
2264 }
2265 else
2266 {
2267 ASSERT(p[0] == '\0');
2268 KdbNumberOfColsPrinted += i;
2269 }
2270
2271 KdbNumberOfRowsPrinted += RowsPrintedByTerminal;
2272 }
2273 }
2274
2275 /*!\brief Appends a command to the command history
2276 *
2277 * \param Command Pointer to the command to append to the history.
2278 */
2279 static VOID
2280 KdbpCommandHistoryAppend(
2281 IN PCHAR Command)
2282 {
2283 ULONG Length1 = strlen(Command) + 1;
2284 ULONG Length2 = 0;
2285 INT i;
2286 PCHAR Buffer;
2287
2288 ASSERT(Length1 <= RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2289
2290 if (Length1 <= 1 ||
2291 (KdbCommandHistory[KdbCommandHistoryIndex] &&
2292 strcmp(KdbCommandHistory[KdbCommandHistoryIndex], Command) == 0))
2293 {
2294 return;
2295 }
2296
2297 /* Calculate Length1 and Length2 */
2298 Buffer = KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex;
2299 KdbCommandHistoryBufferIndex += Length1;
2300 if (KdbCommandHistoryBufferIndex >= (LONG)RTL_NUMBER_OF(KdbCommandHistoryBuffer))
2301 {
2302 KdbCommandHistoryBufferIndex -= RTL_NUMBER_OF(KdbCommandHistoryBuffer);
2303 Length2 = KdbCommandHistoryBufferIndex;
2304 Length1 -= Length2;
2305 }
2306
2307 /* Remove previous commands until there is enough space to append the new command */
2308 for (i = KdbCommandHistoryIndex; KdbCommandHistory[i];)
2309 {
2310 if ((Length2 > 0 &&
2311 (KdbCommandHistory[i] >= Buffer ||
2312 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))) ||
2313 (Length2 <= 0 &&
2314 (KdbCommandHistory[i] >= Buffer &&
2315 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))))
2316 {
2317 KdbCommandHistory[i] = NULL;
2318 }
2319
2320 i--;
2321 if (i < 0)
2322 i = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2323
2324 if (i == KdbCommandHistoryIndex)
2325 break;
2326 }
2327
2328 /* Make sure the new command history entry is free */
2329 KdbCommandHistoryIndex++;
2330 KdbCommandHistoryIndex %= RTL_NUMBER_OF(KdbCommandHistory);
2331 if (KdbCommandHistory[KdbCommandHistoryIndex])
2332 {
2333 KdbCommandHistory[KdbCommandHistoryIndex] = NULL;
2334 }
2335
2336 /* Append command */
2337 KdbCommandHistory[KdbCommandHistoryIndex] = Buffer;
2338 ASSERT((KdbCommandHistory[KdbCommandHistoryIndex] + Length1) <= KdbCommandHistoryBuffer + RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2339 memcpy(KdbCommandHistory[KdbCommandHistoryIndex], Command, Length1);
2340 if (Length2 > 0)
2341 {
2342 memcpy(KdbCommandHistoryBuffer, Command + Length1, Length2);
2343 }
2344 }
2345
2346 /*!\brief Reads a line of user-input.
2347 *
2348 * \param Buffer Buffer to store the input into. Trailing newlines are removed.
2349 * \param Size Size of \a Buffer.
2350 *
2351 * \note Accepts only \n newlines, \r is ignored.
2352 */
2353 static VOID
2354 KdbpReadCommand(
2355 OUT PCHAR Buffer,
2356 IN ULONG Size)
2357 {
2358 CHAR Key;
2359 PCHAR Orig = Buffer;
2360 ULONG ScanCode = 0;
2361 BOOLEAN EchoOn;
2362 static CHAR LastCommand[1024] = "";
2363 static CHAR NextKey = '\0';
2364 INT CmdHistIndex = -1;
2365 INT i;
2366
2367 EchoOn = !((KdbDebugState & KD_DEBUG_KDNOECHO) != 0);
2368
2369 for (;;)
2370 {
2371 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2372 {
2373 Key = (NextKey == '\0') ? KdbpGetCharSerial() : NextKey;
2374 NextKey = '\0';
2375 ScanCode = 0;
2376 if (Key == KEY_ESC) /* ESC */
2377 {
2378 Key = KdbpGetCharSerial();
2379 if (Key == '[')
2380 {
2381 Key = KdbpGetCharSerial();
2382
2383 switch (Key)
2384 {
2385 case 'A':
2386 ScanCode = KEY_SCAN_UP;
2387 break;
2388 case 'B':
2389 ScanCode = KEY_SCAN_DOWN;
2390 break;
2391 case 'C':
2392 break;
2393 case 'D':
2394 break;
2395 }
2396 }
2397 }
2398 }
2399 else
2400 {
2401 ScanCode = 0;
2402 Key = (NextKey == '\0') ? KdbpGetCharKeyboard(&ScanCode) : NextKey;
2403 NextKey = '\0';
2404 }
2405
2406 if ((ULONG)(Buffer - Orig) >= (Size - 1))
2407 {
2408 /* Buffer is full, accept only newlines */
2409 if (Key != '\n')
2410 continue;
2411 }
2412
2413 if (Key == '\r')
2414 {
2415 /* Read the next char - this is to throw away a \n which most clients should
2416 * send after \r.
2417 */
2418 KeStallExecutionProcessor(100000);
2419
2420 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2421 NextKey = KdbpTryGetCharSerial(5);
2422 else
2423 NextKey = KdbpTryGetCharKeyboard(&ScanCode, 5);
2424
2425 if (NextKey == '\n' || NextKey == -1) /* \n or no response at all */
2426 NextKey = '\0';
2427
2428 KdbpPrint("\n");
2429
2430 /*
2431 * Repeat the last command if the user presses enter. Reduces the
2432 * risk of RSI when single-stepping.
2433 */
2434 if (Buffer == Orig)
2435 {
2436 strncpy(Buffer, LastCommand, Size);
2437 Buffer[Size - 1] = '\0';
2438 }
2439 else
2440 {
2441 *Buffer = '\0';
2442 strncpy(LastCommand, Orig, sizeof (LastCommand));
2443 LastCommand[sizeof (LastCommand) - 1] = '\0';
2444 }
2445
2446 return;
2447 }
2448 else if (Key == KEY_BS || Key == KEY_DEL)
2449 {
2450 if (Buffer > Orig)
2451 {
2452 Buffer--;
2453 *Buffer = 0;
2454
2455 if (EchoOn)
2456 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2457 else
2458 KdbpPrint(" %c", KEY_BS);
2459 }
2460 }
2461 else if (ScanCode == KEY_SCAN_UP)
2462 {
2463 BOOLEAN Print = TRUE;
2464
2465 if (CmdHistIndex < 0)
2466 {
2467 CmdHistIndex = KdbCommandHistoryIndex;
2468 }
2469 else
2470 {
2471 i = CmdHistIndex - 1;
2472
2473 if (i < 0)
2474 CmdHistIndex = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2475
2476 if (KdbCommandHistory[i] && i != KdbCommandHistoryIndex)
2477 CmdHistIndex = i;
2478 else
2479 Print = FALSE;
2480 }
2481
2482 if (Print && KdbCommandHistory[CmdHistIndex])
2483 {
2484 while (Buffer > Orig)
2485 {
2486 Buffer--;
2487 *Buffer = 0;
2488
2489 if (EchoOn)
2490 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2491 else
2492 KdbpPrint(" %c", KEY_BS);
2493 }
2494
2495 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2496 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2497 Orig[i] = '\0';
2498 Buffer = Orig + i;
2499 KdbpPrint("%s", Orig);
2500 }
2501 }
2502 else if (ScanCode == KEY_SCAN_DOWN)
2503 {
2504 if (CmdHistIndex > 0 && CmdHistIndex != KdbCommandHistoryIndex)
2505 {
2506 i = CmdHistIndex + 1;
2507 if (i >= (INT)RTL_NUMBER_OF(KdbCommandHistory))
2508 i = 0;
2509
2510 if (KdbCommandHistory[i])
2511 {
2512 CmdHistIndex = i;
2513 while (Buffer > Orig)
2514 {
2515 Buffer--;
2516 *Buffer = 0;
2517
2518 if (EchoOn)
2519 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2520 else
2521 KdbpPrint(" %c", KEY_BS);
2522 }
2523
2524 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2525 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2526 Orig[i] = '\0';
2527 Buffer = Orig + i;
2528 KdbpPrint("%s", Orig);
2529 }
2530 }
2531 }
2532 else
2533 {
2534 if (EchoOn)
2535 KdbpPrint("%c", Key);
2536
2537 *Buffer = Key;
2538 Buffer++;
2539 }
2540 }
2541 }
2542
2543 /*!\brief Parses command line and executes command if found
2544 *
2545 * \param Command Command line to parse and execute if possible.
2546 *
2547 * \retval TRUE Don't continue execution.
2548 * \retval FALSE Continue execution (leave KDB)
2549 */
2550 static BOOLEAN
2551 KdbpDoCommand(
2552 IN PCHAR Command)
2553 {
2554 ULONG i;
2555 PCHAR p;
2556 ULONG Argc;
2557 static PCH Argv[256];
2558 static CHAR OrigCommand[1024];
2559
2560 strncpy(OrigCommand, Command, sizeof(OrigCommand) - 1);
2561 OrigCommand[sizeof(OrigCommand) - 1] = '\0';
2562
2563 Argc = 0;
2564 p = Command;
2565
2566 for (;;)
2567 {
2568 while (*p == '\t' || *p == ' ')
2569 p++;
2570
2571 if (*p == '\0')
2572 break;
2573
2574 i = strcspn(p, "\t ");
2575 Argv[Argc++] = p;
2576 p += i;
2577 if (*p == '\0')
2578 break;
2579
2580 *p = '\0';
2581 p++;
2582 }
2583
2584 if (Argc < 1)
2585 return TRUE;
2586
2587 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2588 {
2589 if (!KdbDebuggerCommands[i].Name)
2590 continue;
2591
2592 if (strcmp(KdbDebuggerCommands[i].Name, Argv[0]) == 0)
2593 {
2594 return KdbDebuggerCommands[i].Fn(Argc, Argv);
2595 }
2596 }
2597
2598 KdbpPrint("Command '%s' is unknown.\n", OrigCommand);
2599 return TRUE;
2600 }
2601
2602 /*!\brief KDB Main Loop.
2603 *
2604 * \param EnteredOnSingleStep TRUE if KDB was entered on single step.
2605 */
2606 VOID
2607 KdbpCliMainLoop(
2608 IN BOOLEAN EnteredOnSingleStep)
2609 {
2610 static CHAR Command[1024];
2611 BOOLEAN Continue;
2612
2613 if (EnteredOnSingleStep)
2614 {
2615 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
2616 {
2617 KdbpPrint("<%x>", KdbCurrentTrapFrame->Tf.Eip);
2618 }
2619
2620 KdbpPrint(": ");
2621 if (KdbpDisassemble(KdbCurrentTrapFrame->Tf.Eip, KdbUseIntelSyntax) < 0)
2622 {
2623 KdbpPrint("<INVALID>");
2624 }
2625 KdbpPrint("\n");
2626 }
2627
2628 /* Flush the input buffer */
2629 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2630 {
2631 while (KdbpTryGetCharSerial(1) != -1);
2632 }
2633 else
2634 {
2635 ULONG ScanCode;
2636 while (KdbpTryGetCharKeyboard(&ScanCode, 1) != -1);
2637 }
2638
2639 /* Main loop */
2640 do
2641 {
2642 /* Print the prompt */
2643 KdbpPrint("kdb:> ");
2644
2645 /* Read a command and remember it */
2646 KdbpReadCommand(Command, sizeof (Command));
2647 KdbpCommandHistoryAppend(Command);
2648
2649 /* Reset the number of rows/cols printed and output aborted state */
2650 KdbNumberOfRowsPrinted = KdbNumberOfColsPrinted = 0;
2651 KdbOutputAborted = FALSE;
2652
2653 /* Call the command */
2654 Continue = KdbpDoCommand(Command);
2655 }
2656 while (Continue);
2657 }
2658
2659 /*!\brief Called when a module is loaded.
2660 *
2661 * \param Name Filename of the module which was loaded.
2662 */
2663 VOID
2664 KdbpCliModuleLoaded(
2665 IN PUNICODE_STRING Name)
2666 {
2667 if (!KdbBreakOnModuleLoad)
2668 return;
2669
2670 KdbpPrint("Module %wZ loaded.\n", Name);
2671 DbgBreakPointWithStatus(DBG_STATUS_CONTROL_C);
2672 }
2673
2674 /*!\brief This function is called by KdbEnterDebuggerException...
2675 *
2676 * Used to interpret the init file in a context with a trapframe setup
2677 * (KdbpCliInit call KdbEnter which will call KdbEnterDebuggerException which will
2678 * call this function if KdbInitFileBuffer is not NULL.
2679 */
2680 VOID
2681 KdbpCliInterpretInitFile()
2682 {
2683 PCHAR p1, p2;
2684 INT i;
2685 CHAR c;
2686
2687 /* Execute the commands in the init file */
2688 DPRINT("KDB: Executing KDBinit file...\n");
2689 p1 = KdbInitFileBuffer;
2690 while (p1[0] != '\0')
2691 {
2692 i = strcspn(p1, "\r\n");
2693 if (i > 0)
2694 {
2695 c = p1[i];
2696 p1[i] = '\0';
2697
2698 /* Look for "break" command and comments */
2699 p2 = p1;
2700
2701 while (isspace(p2[0]))
2702 p2++;
2703
2704 if (strncmp(p2, "break", sizeof("break")-1) == 0 &&
2705 (p2[sizeof("break")-1] == '\0' || isspace(p2[sizeof("break")-1])))
2706 {
2707 /* break into the debugger */
2708 KdbpCliMainLoop(FALSE);
2709 }
2710 else if (p2[0] != '#' && p2[0] != '\0') /* Ignore empty lines and comments */
2711 {
2712 KdbpDoCommand(p1);
2713 }
2714
2715 p1[i] = c;
2716 }
2717
2718 p1 += i;
2719 while (p1[0] == '\r' || p1[0] == '\n')
2720 p1++;
2721 }
2722 DPRINT("KDB: KDBinit executed\n");
2723 }
2724
2725 /*!\brief Called when KDB is initialized
2726 *
2727 * Reads the KDBinit file from the SystemRoot\system32\drivers\etc directory and executes it.
2728 */
2729 VOID
2730 KdbpCliInit()
2731 {
2732 NTSTATUS Status;
2733 OBJECT_ATTRIBUTES ObjectAttributes;
2734 UNICODE_STRING FileName;
2735 IO_STATUS_BLOCK Iosb;
2736 FILE_STANDARD_INFORMATION FileStdInfo;
2737 HANDLE hFile = NULL;
2738 INT FileSize;
2739 PCHAR FileBuffer;
2740 ULONG OldEflags;
2741
2742 /* Initialize the object attributes */
2743 RtlInitUnicodeString(&FileName, L"\\SystemRoot\\system32\\drivers\\etc\\KDBinit");
2744 InitializeObjectAttributes(&ObjectAttributes, &FileName, 0, NULL, NULL);
2745
2746 /* Open the file */
2747 Status = ZwOpenFile(&hFile, FILE_READ_DATA, &ObjectAttributes, &Iosb, 0,
2748 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
2749 FILE_NO_INTERMEDIATE_BUFFERING);
2750 if (!NT_SUCCESS(Status))
2751 {
2752 DPRINT("Could not open \\SystemRoot\\system32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
2753 return;
2754 }
2755
2756 /* Get the size of the file */
2757 Status = ZwQueryInformationFile(hFile, &Iosb, &FileStdInfo, sizeof (FileStdInfo),
2758 FileStandardInformation);
2759 if (!NT_SUCCESS(Status))
2760 {
2761 ZwClose(hFile);
2762 DPRINT("Could not query size of \\SystemRoot\\system32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
2763 return;
2764 }
2765 FileSize = FileStdInfo.EndOfFile.u.LowPart;
2766
2767 /* Allocate memory for the file */
2768 FileBuffer = ExAllocatePool(PagedPool, FileSize + 1); /* add 1 byte for terminating '\0' */
2769 if (!FileBuffer)
2770 {
2771 ZwClose(hFile);
2772 DPRINT("Could not allocate %d bytes for KDBinit file\n", FileSize);
2773 return;
2774 }
2775
2776 /* Load file into memory */
2777 Status = ZwReadFile(hFile, 0, 0, 0, &Iosb, FileBuffer, FileSize, 0, 0);
2778 ZwClose(hFile);
2779
2780 if (!NT_SUCCESS(Status) && Status != STATUS_END_OF_FILE)
2781 {
2782 ExFreePool(FileBuffer);
2783 DPRINT("Could not read KDBinit file into memory (Status 0x%lx)\n", Status);
2784 return;
2785 }
2786
2787 FileSize = min(FileSize, (INT)Iosb.Information);
2788 FileBuffer[FileSize] = '\0';
2789
2790 /* Enter critical section */
2791 OldEflags = __readeflags();
2792 _disable();
2793
2794 /* Interpret the init file... */
2795 KdbInitFileBuffer = FileBuffer;
2796 KdbEnter();
2797 KdbInitFileBuffer = NULL;
2798
2799 /* Leave critical section */
2800 __writeeflags(OldEflags);
2801
2802 ExFreePool(FileBuffer);
2803 }
2804
2805 VOID
2806 NTAPI
2807 KdpSerialDebugPrint(
2808 LPSTR Message,
2809 ULONG Length
2810 );
2811
2812 STRING KdpPromptString = RTL_CONSTANT_STRING("kdb:> ");
2813 extern KSPIN_LOCK KdpSerialSpinLock;
2814
2815 ULONG
2816 NTAPI
2817 KdpPrompt(IN LPSTR InString,
2818 IN USHORT InStringLength,
2819 OUT LPSTR OutString,
2820 IN USHORT OutStringLength)
2821 {
2822 USHORT i;
2823 CHAR Response;
2824 ULONG DummyScanCode;
2825 KIRQL OldIrql;
2826
2827 /* Acquire the printing spinlock without waiting at raised IRQL */
2828 while (TRUE)
2829 {
2830 /* Wait when the spinlock becomes available */
2831 while (!KeTestSpinLock(&KdpSerialSpinLock));
2832
2833 /* Spinlock was free, raise IRQL */
2834 KeRaiseIrql(HIGH_LEVEL, &OldIrql);
2835
2836 /* Try to get the spinlock */
2837 if (KeTryToAcquireSpinLockAtDpcLevel(&KdpSerialSpinLock))
2838 break;
2839
2840 /* Someone else got the spinlock, lower IRQL back */
2841 KeLowerIrql(OldIrql);
2842 }
2843
2844 /* Loop the string to send */
2845 for (i = 0; i < InStringLength; i++)
2846 {
2847 /* Print it to serial */
2848 KdPortPutByteEx(&SerialPortInfo, *(PCHAR)(InString + i));
2849 }
2850
2851 /* Print a new line for log neatness */
2852 KdPortPutByteEx(&SerialPortInfo, '\r');
2853 KdPortPutByteEx(&SerialPortInfo, '\n');
2854
2855 /* Print the kdb prompt */
2856 for (i = 0; i < KdpPromptString.Length; i++)
2857 {
2858 /* Print it to serial */
2859 KdPortPutByteEx(&SerialPortInfo,
2860 *(KdpPromptString.Buffer + i));
2861 }
2862
2863 /* Loop the whole string */
2864 for (i = 0; i < OutStringLength; i++)
2865 {
2866 /* Check if this is serial debugging mode */
2867 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2868 {
2869 /* Get the character from serial */
2870 do
2871 {
2872 Response = KdbpTryGetCharSerial(MAXULONG);
2873 } while (Response == -1);
2874 }
2875 else
2876 {
2877 /* Get the response from the keyboard */
2878 do
2879 {
2880 Response = KdbpTryGetCharKeyboard(&DummyScanCode, MAXULONG);
2881 } while (Response == -1);
2882 }
2883
2884 /* Check for return */
2885 if (Response == '\r')
2886 {
2887 /*
2888 * We might need to discard the next '\n'.
2889 * Wait a bit to make sure we receive it.
2890 */
2891 KeStallExecutionProcessor(100000);
2892
2893 /* Check the mode */
2894 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2895 {
2896 /* Read and discard the next character, if any */
2897 KdbpTryGetCharSerial(5);
2898 }
2899 else
2900 {
2901 /* Read and discard the next character, if any */
2902 KdbpTryGetCharKeyboard(&DummyScanCode, 5);
2903 }
2904
2905 /*
2906 * Null terminate the output string -- documentation states that
2907 * DbgPrompt does not null terminate, but it does
2908 */
2909 *(PCHAR)(OutString + i) = 0;
2910
2911 /* Print a new line */
2912 KdPortPutByteEx(&SerialPortInfo, '\r');
2913 KdPortPutByteEx(&SerialPortInfo, '\n');
2914
2915 /* Release spinlock */
2916 KiReleaseSpinLock(&KdpSerialSpinLock);
2917
2918 /* Lower IRQL back */
2919 KeLowerIrql(OldIrql);
2920
2921 /* Return the length */
2922 return OutStringLength + 1;
2923 }
2924
2925 /* Write it back and print it to the log */
2926 *(PCHAR)(OutString + i) = Response;
2927 KdPortPutByteEx(&SerialPortInfo, Response);
2928 }
2929
2930 /* Print a new line */
2931 KdPortPutByteEx(&SerialPortInfo, '\r');
2932 KdPortPutByteEx(&SerialPortInfo, '\n');
2933
2934 /* Release spinlock */
2935 KiReleaseSpinLock(&KdpSerialSpinLock);
2936
2937 /* Lower IRQL back */
2938 KeLowerIrql(OldIrql);
2939
2940 /* Return the length */
2941 return OutStringLength;
2942 }
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