[NTOSKRNL]
[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 { "RPCPROXY", DPFLTR_RPCPROXY_ID },
224 { "AUTOCHK", DPFLTR_AUTOCHK_ID },
225 { "DCOMSS", DPFLTR_DCOMSS_ID },
226 { "UNIMODEM", DPFLTR_UNIMODEM_ID },
227 { "SIS", DPFLTR_SIS_ID },
228 { "FLTMGR", DPFLTR_FLTMGR_ID },
229 { "WMICORE", DPFLTR_WMICORE_ID },
230 { "BURNENG", DPFLTR_BURNENG_ID },
231 { "IMAPI", DPFLTR_IMAPI_ID },
232 { "SXS", DPFLTR_SXS_ID },
233 { "FUSION", DPFLTR_FUSION_ID },
234 { "IDLETASK", DPFLTR_IDLETASK_ID },
235 { "SOFTPCI", DPFLTR_SOFTPCI_ID },
236 { "TAPE", DPFLTR_TAPE_ID },
237 { "MCHGR", DPFLTR_MCHGR_ID },
238 { "IDEP", DPFLTR_IDEP_ID },
239 { "PCIIDE", DPFLTR_PCIIDE_ID },
240 { "FLOPPY", DPFLTR_FLOPPY_ID },
241 { "FDC", DPFLTR_FDC_ID },
242 { "TERMSRV", DPFLTR_TERMSRV_ID },
243 { "W32TIME", DPFLTR_W32TIME_ID },
244 { "PREFETCHER", DPFLTR_PREFETCHER_ID },
245 { "RSFILTER", DPFLTR_RSFILTER_ID },
246 { "FCPORT", DPFLTR_FCPORT_ID },
247 { "PCI", DPFLTR_PCI_ID },
248 { "DMIO", DPFLTR_DMIO_ID },
249 { "DMCONFIG", DPFLTR_DMCONFIG_ID },
250 { "DMADMIN", DPFLTR_DMADMIN_ID },
251 { "WSOCKTRANSPORT", DPFLTR_WSOCKTRANSPORT_ID },
252 { "VSS", DPFLTR_VSS_ID },
253 { "PNPMEM", DPFLTR_PNPMEM_ID },
254 { "PROCESSOR", DPFLTR_PROCESSOR_ID },
255 { "DMSERVER", DPFLTR_DMSERVER_ID },
256 { "SR", DPFLTR_SR_ID },
257 { "INFINIBAND", DPFLTR_INFINIBAND_ID },
258 { "IHVDRIVER", DPFLTR_IHVDRIVER_ID },
259 { "IHVVIDEO", DPFLTR_IHVVIDEO_ID },
260 { "IHVAUDIO", DPFLTR_IHVAUDIO_ID },
261 { "IHVNETWORK", DPFLTR_IHVNETWORK_ID },
262 { "IHVSTREAMING", DPFLTR_IHVSTREAMING_ID },
263 { "IHVBUS", DPFLTR_IHVBUS_ID },
264 { "HPS", DPFLTR_HPS_ID },
265 { "RTLTHREADPOOL", DPFLTR_RTLTHREADPOOL_ID },
266 { "LDR", DPFLTR_LDR_ID },
267 { "TCPIP6", DPFLTR_TCPIP6_ID },
268 { "ISAPNP", DPFLTR_ISAPNP_ID },
269 { "SHPC", DPFLTR_SHPC_ID },
270 { "STORPORT", DPFLTR_STORPORT_ID },
271 { "STORMINIPORT", DPFLTR_STORMINIPORT_ID },
272 { "PRINTSPOOLER", DPFLTR_PRINTSPOOLER_ID },
273 { "VSSDYNDISK", DPFLTR_VSSDYNDISK_ID },
274 { "VERIFIER", DPFLTR_VERIFIER_ID },
275 { "VDS", DPFLTR_VDS_ID },
276 { "VDSBAS", DPFLTR_VDSBAS_ID },
277 { "VDSDYN", DPFLTR_VDSDYN_ID },
278 { "VDSDYNDR", DPFLTR_VDSDYNDR_ID },
279 { "VDSLDR", DPFLTR_VDSLDR_ID },
280 { "VDSUTIL", DPFLTR_VDSUTIL_ID },
281 { "DFRGIFC", DPFLTR_DFRGIFC_ID },
282 { "MM", DPFLTR_MM_ID },
283 { "DFSC", DPFLTR_DFSC_ID },
284 { "WOW64", DPFLTR_WOW64_ID },
285 { "ALPC", DPFLTR_ALPC_ID },
286 { "WDI", DPFLTR_WDI_ID },
287 { "PERFLIB", DPFLTR_PERFLIB_ID },
288 { "KTM", DPFLTR_KTM_ID },
289 { "IOSTRESS", DPFLTR_IOSTRESS_ID },
290 { "HEAP", DPFLTR_HEAP_ID },
291 { "WHEA", DPFLTR_WHEA_ID },
292 { "USERGDI", DPFLTR_USERGDI_ID },
293 { "MMCSS", DPFLTR_MMCSS_ID },
294 { "TPM", DPFLTR_TPM_ID },
295 { "THREADORDER", DPFLTR_THREADORDER_ID },
296 { "ENVIRON", DPFLTR_ENVIRON_ID },
297 { "EMS", DPFLTR_EMS_ID },
298 { "WDT", DPFLTR_WDT_ID },
299 { "FVEVOL", DPFLTR_FVEVOL_ID },
300 { "NDIS", DPFLTR_NDIS_ID },
301 { "NVCTRACE", DPFLTR_NVCTRACE_ID },
302 { "LUAFV", DPFLTR_LUAFV_ID },
303 { "APPCOMPAT", DPFLTR_APPCOMPAT_ID },
304 { "USBSTOR", DPFLTR_USBSTOR_ID },
305 { "SBP2PORT", DPFLTR_SBP2PORT_ID },
306 { "COVERAGE", DPFLTR_COVERAGE_ID },
307 { "CACHEMGR", DPFLTR_CACHEMGR_ID },
308 { "MOUNTMGR", DPFLTR_MOUNTMGR_ID },
309 { "CFR", DPFLTR_CFR_ID },
310 { "TXF", DPFLTR_TXF_ID },
311 { "KSECDD", DPFLTR_KSECDD_ID },
312 { "FLTREGRESS", DPFLTR_FLTREGRESS_ID },
313 { "MPIO", DPFLTR_MPIO_ID },
314 { "MSDSM", DPFLTR_MSDSM_ID },
315 { "UDFS", DPFLTR_UDFS_ID },
316 { "PSHED", DPFLTR_PSHED_ID },
317 { "STORVSP", DPFLTR_STORVSP_ID },
318 { "LSASS", DPFLTR_LSASS_ID },
319 { "SSPICLI", DPFLTR_SSPICLI_ID },
320 { "CNG", DPFLTR_CNG_ID },
321 { "EXFAT", DPFLTR_EXFAT_ID },
322 { "FILETRACE", DPFLTR_FILETRACE_ID },
323 { "XSAVE", DPFLTR_XSAVE_ID },
324 { "SE", DPFLTR_SE_ID },
325 { "DRIVEEXTENDER", DPFLTR_DRIVEEXTENDER_ID },
326 };
327
328 for (i = 0; i < sizeof(ComponentTable) / sizeof(ComponentTable[0]); i++)
329 {
330 if (_stricmp(ComponentName, ComponentTable[i].Name) == 0)
331 {
332 *ComponentId = ComponentTable[i].Id;
333 return TRUE;
334 }
335 }
336
337 return FALSE;
338 }
339
340 /*!\brief Evaluates an expression...
341 *
342 * Much like KdbpRpnEvaluateExpression, but prints the error message (if any)
343 * at the given offset.
344 *
345 * \param Expression Expression to evaluate.
346 * \param ErrOffset Offset (in characters) to print the error message at.
347 * \param Result Receives the result on success.
348 *
349 * \retval TRUE Success.
350 * \retval FALSE Failure.
351 */
352 static BOOLEAN
353 KdbpEvaluateExpression(
354 IN PCHAR Expression,
355 IN LONG ErrOffset,
356 OUT PULONGLONG Result)
357 {
358 static CHAR ErrMsgBuffer[130] = "^ ";
359 LONG ExpressionErrOffset = -1;
360 PCHAR ErrMsg = ErrMsgBuffer;
361 BOOLEAN Ok;
362
363 Ok = KdbpRpnEvaluateExpression(Expression, KdbCurrentTrapFrame, Result,
364 &ExpressionErrOffset, ErrMsgBuffer + 2);
365 if (!Ok)
366 {
367 if (ExpressionErrOffset >= 0)
368 ExpressionErrOffset += ErrOffset;
369 else
370 ErrMsg += 2;
371
372 KdbpPrint("%*s%s\n", ExpressionErrOffset, "", ErrMsg);
373 }
374
375 return Ok;
376 }
377
378 /*!\brief Evaluates an expression and displays the result.
379 */
380 static BOOLEAN
381 KdbpCmdEvalExpression(
382 ULONG Argc,
383 PCHAR Argv[])
384 {
385 ULONG i, len;
386 ULONGLONG Result = 0;
387 ULONG ul;
388 LONG l = 0;
389 BOOLEAN Ok;
390
391 if (Argc < 2)
392 {
393 KdbpPrint("?: Argument required\n");
394 return TRUE;
395 }
396
397 /* Put the arguments back together */
398 Argc--;
399 for (i = 1; i < Argc; i++)
400 {
401 len = strlen(Argv[i]);
402 Argv[i][len] = ' ';
403 }
404
405 /* Evaluate the expression */
406 Ok = KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result);
407 if (Ok)
408 {
409 if (Result > 0x00000000ffffffffLL)
410 {
411 if (Result & 0x8000000000000000LL)
412 KdbpPrint("0x%016I64x %20I64u %20I64d\n", Result, Result, Result);
413 else
414 KdbpPrint("0x%016I64x %20I64u\n", Result, Result);
415 }
416 else
417 {
418 ul = (ULONG)Result;
419
420 if (ul <= 0xff && ul >= 0x80)
421 l = (LONG)((CHAR)ul);
422 else if (ul <= 0xffff && ul >= 0x8000)
423 l = (LONG)((SHORT)ul);
424 else
425 l = (LONG)ul;
426
427 if (l < 0)
428 KdbpPrint("0x%08lx %10lu %10ld\n", ul, ul, l);
429 else
430 KdbpPrint("0x%08lx %10lu\n", ul, ul);
431 }
432 }
433
434 return TRUE;
435 }
436
437 /*!\brief Display list of active debug channels
438 */
439 static BOOLEAN
440 KdbpCmdFilter(
441 ULONG Argc,
442 PCHAR Argv[])
443 {
444 ULONG i, j, ComponentId, Level;
445 ULONG set = DPFLTR_MASK, clear = DPFLTR_MASK;
446 PCHAR pend;
447 LPCSTR opt, p;
448
449 static struct
450 {
451 LPCSTR Name;
452 ULONG Level;
453 }
454 debug_classes[] =
455 {
456 { "error", 1 << DPFLTR_ERROR_LEVEL },
457 { "warning", 1 << DPFLTR_WARNING_LEVEL },
458 { "trace", 1 << DPFLTR_TRACE_LEVEL },
459 { "info", 1 << DPFLTR_INFO_LEVEL },
460 };
461
462 for (i = 1; i < Argc; i++)
463 {
464 opt = Argv[i];
465 p = opt + strcspn(opt, "+-");
466 if (!p[0]) p = opt; /* assume it's a debug channel name */
467
468 if (p > opt)
469 {
470 for (j = 0; j < sizeof(debug_classes) / sizeof(debug_classes[0]); j++)
471 {
472 SIZE_T len = strlen(debug_classes[j].Name);
473 if (len != (p - opt))
474 continue;
475 if (_strnicmp(opt, debug_classes[j].Name, len) == 0) /* found it */
476 {
477 if (*p == '+')
478 set |= debug_classes[j].Level;
479 else
480 clear |= debug_classes[j].Level;
481 break;
482 }
483 }
484 if (j == sizeof(debug_classes) / sizeof(debug_classes[0]))
485 {
486 Level = strtoul(opt, &pend, 0);
487 if (pend != p)
488 {
489 KdbpPrint("filter: bad class name '%.*s'\n", p - opt, opt);
490 continue;
491 }
492 if (*p == '+')
493 set |= Level;
494 else
495 clear |= Level;
496 }
497 }
498 else
499 {
500 if (*p == '-')
501 clear = MAXULONG;
502 else
503 set = MAXULONG;
504 }
505 if (*p == '+' || *p == '-')
506 p++;
507
508 if (!KdbpGetComponentId(p, &ComponentId))
509 {
510 KdbpPrint("filter: '%s' is not a valid component name!\n", p);
511 return TRUE;
512 }
513
514 /* Get current mask value */
515 NtSetDebugFilterState(ComponentId, set, TRUE);
516 NtSetDebugFilterState(ComponentId, clear, FALSE);
517 }
518
519 return TRUE;
520 }
521
522 /*!\brief Disassembles 10 instructions at eip or given address or
523 * displays 16 dwords from memory at given address.
524 */
525 static BOOLEAN
526 KdbpCmdDisassembleX(
527 ULONG Argc,
528 PCHAR Argv[])
529 {
530 ULONG Count;
531 ULONG ul;
532 INT i;
533 ULONGLONG Result = 0;
534 ULONG_PTR Address = KdbCurrentTrapFrame->Tf.Eip;
535 LONG InstLen;
536
537 if (Argv[0][0] == 'x') /* display memory */
538 Count = 16;
539 else /* disassemble */
540 Count = 10;
541
542 if (Argc >= 2)
543 {
544 /* Check for [L count] part */
545 ul = 0;
546 if (strcmp(Argv[Argc-2], "L") == 0)
547 {
548 ul = strtoul(Argv[Argc-1], NULL, 0);
549 if (ul > 0)
550 {
551 Count = ul;
552 Argc -= 2;
553 }
554 }
555 else if (Argv[Argc-1][0] == 'L')
556 {
557 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
558 if (ul > 0)
559 {
560 Count = ul;
561 Argc--;
562 }
563 }
564
565 /* Put the remaining arguments back together */
566 Argc--;
567 for (ul = 1; ul < Argc; ul++)
568 {
569 Argv[ul][strlen(Argv[ul])] = ' ';
570 }
571 Argc++;
572 }
573
574 /* Evaluate the expression */
575 if (Argc > 1)
576 {
577 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
578 return TRUE;
579
580 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
581 KdbpPrint("Warning: Address %I64x is beeing truncated\n",Result);
582
583 Address = (ULONG_PTR)Result;
584 }
585 else if (Argv[0][0] == 'x')
586 {
587 KdbpPrint("x: Address argument required.\n");
588 return TRUE;
589 }
590
591 if (Argv[0][0] == 'x')
592 {
593 /* Display dwords */
594 ul = 0;
595
596 while (Count > 0)
597 {
598 if (!KdbSymPrintAddress((PVOID)Address))
599 KdbpPrint("<%x>:", Address);
600 else
601 KdbpPrint(":");
602
603 i = min(4, Count);
604 Count -= i;
605
606 while (--i >= 0)
607 {
608 if (!NT_SUCCESS(KdbpSafeReadMemory(&ul, (PVOID)Address, sizeof(ul))))
609 KdbpPrint(" ????????");
610 else
611 KdbpPrint(" %08x", ul);
612
613 Address += sizeof(ul);
614 }
615
616 KdbpPrint("\n");
617 }
618 }
619 else
620 {
621 /* Disassemble */
622 while (Count-- > 0)
623 {
624 if (!KdbSymPrintAddress((PVOID)Address))
625 KdbpPrint("<%08x>: ", Address);
626 else
627 KdbpPrint(": ");
628
629 InstLen = KdbpDisassemble(Address, KdbUseIntelSyntax);
630 if (InstLen < 0)
631 {
632 KdbpPrint("<INVALID>\n");
633 return TRUE;
634 }
635
636 KdbpPrint("\n");
637 Address += InstLen;
638 }
639 }
640
641 return TRUE;
642 }
643
644 /*!\brief Displays CPU registers.
645 */
646 static BOOLEAN
647 KdbpCmdRegs(
648 ULONG Argc,
649 PCHAR Argv[])
650 {
651 PKTRAP_FRAME Tf = &KdbCurrentTrapFrame->Tf;
652 INT i;
653 static const PCHAR EflagsBits[32] = { " CF", NULL, " PF", " BIT3", " AF", " BIT5",
654 " ZF", " SF", " TF", " IF", " DF", " OF",
655 NULL, NULL, " NT", " BIT15", " RF", " VF",
656 " AC", " VIF", " VIP", " ID", " BIT22",
657 " BIT23", " BIT24", " BIT25", " BIT26",
658 " BIT27", " BIT28", " BIT29", " BIT30",
659 " BIT31" };
660
661 if (Argv[0][0] == 'r') /* regs */
662 {
663 KdbpPrint("CS:EIP 0x%04x:0x%08x\n"
664 "SS:ESP 0x%04x:0x%08x\n"
665 " EAX 0x%08x EBX 0x%08x\n"
666 " ECX 0x%08x EDX 0x%08x\n"
667 " ESI 0x%08x EDI 0x%08x\n"
668 " EBP 0x%08x\n",
669 Tf->SegCs & 0xFFFF, Tf->Eip,
670 Tf->HardwareSegSs, Tf->HardwareEsp,
671 Tf->Eax, Tf->Ebx,
672 Tf->Ecx, Tf->Edx,
673 Tf->Esi, Tf->Edi,
674 Tf->Ebp);
675 KdbpPrint("EFLAGS 0x%08x ", Tf->EFlags);
676
677 for (i = 0; i < 32; i++)
678 {
679 if (i == 1)
680 {
681 if ((Tf->EFlags & (1 << 1)) == 0)
682 KdbpPrint(" !BIT1");
683 }
684 else if (i == 12)
685 {
686 KdbpPrint(" IOPL%d", (Tf->EFlags >> 12) & 3);
687 }
688 else if (i == 13)
689 {
690 }
691 else if ((Tf->EFlags & (1 << i)) != 0)
692 {
693 KdbpPrint(EflagsBits[i]);
694 }
695 }
696
697 KdbpPrint("\n");
698 }
699 else if (Argv[0][0] == 'c') /* cregs */
700 {
701 ULONG Cr0, Cr2, Cr3, Cr4;
702 KDESCRIPTOR Gdtr, Idtr;
703 USHORT Ldtr;
704 static const PCHAR Cr0Bits[32] = { " PE", " MP", " EM", " TS", " ET", " NE", NULL, NULL,
705 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
706 " WP", NULL, " AM", NULL, NULL, NULL, NULL, NULL,
707 NULL, NULL, NULL, NULL, NULL, " NW", " CD", " PG" };
708 static const PCHAR Cr4Bits[32] = { " VME", " PVI", " TSD", " DE", " PSE", " PAE", " MCE", " PGE",
709 " PCE", " OSFXSR", " OSXMMEXCPT", NULL, NULL, NULL, NULL, NULL,
710 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
711 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
712
713 Cr0 = KdbCurrentTrapFrame->Cr0;
714 Cr2 = KdbCurrentTrapFrame->Cr2;
715 Cr3 = KdbCurrentTrapFrame->Cr3;
716 Cr4 = KdbCurrentTrapFrame->Cr4;
717
718 /* Get descriptor table regs */
719 Ke386GetGlobalDescriptorTable(&Gdtr.Limit);
720 Ldtr = Ke386GetLocalDescriptorTable();
721 __sidt(&Idtr.Limit);
722
723 /* Display the control registers */
724 KdbpPrint("CR0 0x%08x ", Cr0);
725
726 for (i = 0; i < 32; i++)
727 {
728 if (!Cr0Bits[i])
729 continue;
730
731 if ((Cr0 & (1 << i)) != 0)
732 KdbpPrint(Cr0Bits[i]);
733 }
734
735 KdbpPrint("\nCR2 0x%08x\n", Cr2);
736 KdbpPrint("CR3 0x%08x Pagedir-Base 0x%08x %s%s\n", Cr3, (Cr3 & 0xfffff000),
737 (Cr3 & (1 << 3)) ? " PWT" : "", (Cr3 & (1 << 4)) ? " PCD" : "" );
738 KdbpPrint("CR4 0x%08x ", Cr4);
739
740 for (i = 0; i < 32; i++)
741 {
742 if (!Cr4Bits[i])
743 continue;
744
745 if ((Cr4 & (1 << i)) != 0)
746 KdbpPrint(Cr4Bits[i]);
747 }
748
749 /* Display the descriptor table regs */
750 KdbpPrint("\nGDTR Base 0x%08x Size 0x%04x\n", Gdtr.Base, Gdtr.Limit);
751 KdbpPrint("LDTR 0x%04x\n", Ldtr);
752 KdbpPrint("IDTR Base 0x%08x Size 0x%04x\n", Idtr.Base, Idtr.Limit);
753 }
754 else if (Argv[0][0] == 's') /* sregs */
755 {
756 KdbpPrint("CS 0x%04x Index 0x%04x %cDT RPL%d\n",
757 Tf->SegCs & 0xffff, (Tf->SegCs & 0xffff) >> 3,
758 (Tf->SegCs & (1 << 2)) ? 'L' : 'G', Tf->SegCs & 3);
759 KdbpPrint("DS 0x%04x Index 0x%04x %cDT RPL%d\n",
760 Tf->SegDs, Tf->SegDs >> 3, (Tf->SegDs & (1 << 2)) ? 'L' : 'G', Tf->SegDs & 3);
761 KdbpPrint("ES 0x%04x Index 0x%04x %cDT RPL%d\n",
762 Tf->SegEs, Tf->SegEs >> 3, (Tf->SegEs & (1 << 2)) ? 'L' : 'G', Tf->SegEs & 3);
763 KdbpPrint("FS 0x%04x Index 0x%04x %cDT RPL%d\n",
764 Tf->SegFs, Tf->SegFs >> 3, (Tf->SegFs & (1 << 2)) ? 'L' : 'G', Tf->SegFs & 3);
765 KdbpPrint("GS 0x%04x Index 0x%04x %cDT RPL%d\n",
766 Tf->SegGs, Tf->SegGs >> 3, (Tf->SegGs & (1 << 2)) ? 'L' : 'G', Tf->SegGs & 3);
767 KdbpPrint("SS 0x%04x Index 0x%04x %cDT RPL%d\n",
768 Tf->HardwareSegSs, Tf->HardwareSegSs >> 3, (Tf->HardwareSegSs & (1 << 2)) ? 'L' : 'G', Tf->HardwareSegSs & 3);
769 }
770 else /* dregs */
771 {
772 ASSERT(Argv[0][0] == 'd');
773 KdbpPrint("DR0 0x%08x\n"
774 "DR1 0x%08x\n"
775 "DR2 0x%08x\n"
776 "DR3 0x%08x\n"
777 "DR6 0x%08x\n"
778 "DR7 0x%08x\n",
779 Tf->Dr0, Tf->Dr1, Tf->Dr2, Tf->Dr3,
780 Tf->Dr6, Tf->Dr7);
781 }
782
783 return TRUE;
784 }
785
786 /*!\brief Displays a backtrace.
787 */
788 static BOOLEAN
789 KdbpCmdBackTrace(
790 ULONG Argc,
791 PCHAR Argv[])
792 {
793 ULONG ul;
794 ULONGLONG Result = 0;
795 ULONG_PTR Frame = KdbCurrentTrapFrame->Tf.Ebp;
796 ULONG_PTR Address;
797
798 if (Argc >= 2)
799 {
800 /* Check for [L count] part */
801 ul = 0;
802
803 if (strcmp(Argv[Argc-2], "L") == 0)
804 {
805 ul = strtoul(Argv[Argc-1], NULL, 0);
806 if (ul > 0)
807 {
808 Argc -= 2;
809 }
810 }
811 else if (Argv[Argc-1][0] == 'L')
812 {
813 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
814 if (ul > 0)
815 {
816 Argc--;
817 }
818 }
819
820 /* Put the remaining arguments back together */
821 Argc--;
822 for (ul = 1; ul < Argc; ul++)
823 {
824 Argv[ul][strlen(Argv[ul])] = ' ';
825 }
826 Argc++;
827 }
828
829 /* Check if frame addr or thread id is given. */
830 if (Argc > 1)
831 {
832 if (Argv[1][0] == '*')
833 {
834 Argv[1]++;
835
836 /* Evaluate the expression */
837 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
838 return TRUE;
839
840 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
841 KdbpPrint("Warning: Address %I64x is beeing truncated\n",Result);
842
843 Frame = (ULONG_PTR)Result;
844 }
845 else
846 {
847 KdbpPrint("Thread backtrace not supported yet!\n");
848 return TRUE;
849 }
850 }
851 else
852 {
853 KdbpPrint("Eip:\n");
854
855 /* Try printing the function at EIP */
856 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
857 KdbpPrint("<%08x>\n", KdbCurrentTrapFrame->Tf.Eip);
858 else
859 KdbpPrint("\n");
860 }
861
862 KdbpPrint("Frames:\n");
863 for (;;)
864 {
865 if (Frame == 0)
866 break;
867
868 if (!NT_SUCCESS(KdbpSafeReadMemory(&Address, (PVOID)(Frame + sizeof(ULONG_PTR)), sizeof (ULONG_PTR))))
869 {
870 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame + sizeof(ULONG_PTR));
871 break;
872 }
873
874 /* Print the location of the call instruction */
875 if (!KdbSymPrintAddress((PVOID)(Address - 5)))
876 KdbpPrint("<%08x>\n", Address);
877 else
878 KdbpPrint("\n");
879
880 if (KdbOutputAborted) break;
881
882 if (Address == 0)
883 break;
884
885 if (!NT_SUCCESS(KdbpSafeReadMemory(&Frame, (PVOID)Frame, sizeof (ULONG_PTR))))
886 {
887 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame);
888 break;
889 }
890 }
891
892 return TRUE;
893 }
894
895 /*!\brief Continues execution of the system/leaves KDB.
896 */
897 static BOOLEAN
898 KdbpCmdContinue(
899 ULONG Argc,
900 PCHAR Argv[])
901 {
902 /* Exit the main loop */
903 return FALSE;
904 }
905
906 /*!\brief Continues execution of the system/leaves KDB.
907 */
908 static BOOLEAN
909 KdbpCmdStep(
910 ULONG Argc,
911 PCHAR Argv[])
912 {
913 ULONG Count = 1;
914
915 if (Argc > 1)
916 {
917 Count = strtoul(Argv[1], NULL, 0);
918 if (Count == 0)
919 {
920 KdbpPrint("%s: Integer argument required\n", Argv[0]);
921 return TRUE;
922 }
923 }
924
925 if (Argv[0][0] == 'n')
926 KdbSingleStepOver = TRUE;
927 else
928 KdbSingleStepOver = FALSE;
929
930 /* Set the number of single steps and return to the interrupted code. */
931 KdbNumSingleSteps = Count;
932
933 return FALSE;
934 }
935
936 /*!\brief Lists breakpoints.
937 */
938 static BOOLEAN
939 KdbpCmdBreakPointList(
940 ULONG Argc,
941 PCHAR Argv[])
942 {
943 LONG l;
944 ULONG_PTR Address = 0;
945 KDB_BREAKPOINT_TYPE Type = 0;
946 KDB_ACCESS_TYPE AccessType = 0;
947 UCHAR Size = 0;
948 UCHAR DebugReg = 0;
949 BOOLEAN Enabled = FALSE;
950 BOOLEAN Global = FALSE;
951 PEPROCESS Process = NULL;
952 PCHAR str1, str2, ConditionExpr, GlobalOrLocal;
953 CHAR Buffer[20];
954
955 l = KdbpGetNextBreakPointNr(0);
956 if (l < 0)
957 {
958 KdbpPrint("No breakpoints.\n");
959 return TRUE;
960 }
961
962 KdbpPrint("Breakpoints:\n");
963 do
964 {
965 if (!KdbpGetBreakPointInfo(l, &Address, &Type, &Size, &AccessType, &DebugReg,
966 &Enabled, &Global, &Process, &ConditionExpr))
967 {
968 continue;
969 }
970
971 if (l == KdbLastBreakPointNr)
972 {
973 str1 = "\x1b[1m*";
974 str2 = "\x1b[0m";
975 }
976 else
977 {
978 str1 = " ";
979 str2 = "";
980 }
981
982 if (Global)
983 {
984 GlobalOrLocal = " global";
985 }
986 else
987 {
988 GlobalOrLocal = Buffer;
989 sprintf(Buffer, " PID 0x%08lx",
990 (ULONG)(Process ? Process->UniqueProcessId : INVALID_HANDLE_VALUE));
991 }
992
993 if (Type == KdbBreakPointSoftware || Type == KdbBreakPointTemporary)
994 {
995 KdbpPrint(" %s%03d BPX 0x%08x%s%s%s%s%s\n",
996 str1, l, Address,
997 Enabled ? "" : " disabled",
998 GlobalOrLocal,
999 ConditionExpr ? " IF " : "",
1000 ConditionExpr ? ConditionExpr : "",
1001 str2);
1002 }
1003 else if (Type == KdbBreakPointHardware)
1004 {
1005 if (!Enabled)
1006 {
1007 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s disabled%s%s%s%s\n", str1, l, Address,
1008 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1009 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1010 GlobalOrLocal,
1011 ConditionExpr ? " IF " : "",
1012 ConditionExpr ? ConditionExpr : "",
1013 str2);
1014 }
1015 else
1016 {
1017 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s DR%d%s%s%s%s\n", str1, l, Address,
1018 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1019 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1020 DebugReg,
1021 GlobalOrLocal,
1022 ConditionExpr ? " IF " : "",
1023 ConditionExpr ? ConditionExpr : "",
1024 str2);
1025 }
1026 }
1027 }
1028 while ((l = KdbpGetNextBreakPointNr(l+1)) >= 0);
1029
1030 return TRUE;
1031 }
1032
1033 /*!\brief Enables, disables or clears a breakpoint.
1034 */
1035 static BOOLEAN
1036 KdbpCmdEnableDisableClearBreakPoint(
1037 ULONG Argc,
1038 PCHAR Argv[])
1039 {
1040 PCHAR pend;
1041 ULONG BreakPointNr;
1042
1043 if (Argc < 2)
1044 {
1045 KdbpPrint("%s: argument required\n", Argv[0]);
1046 return TRUE;
1047 }
1048
1049 pend = Argv[1];
1050 BreakPointNr = strtoul(Argv[1], &pend, 0);
1051 if (pend == Argv[1] || *pend != '\0')
1052 {
1053 KdbpPrint("%s: integer argument required\n", Argv[0]);
1054 return TRUE;
1055 }
1056
1057 if (Argv[0][1] == 'e') /* enable */
1058 {
1059 KdbpEnableBreakPoint(BreakPointNr, NULL);
1060 }
1061 else if (Argv [0][1] == 'd') /* disable */
1062 {
1063 KdbpDisableBreakPoint(BreakPointNr, NULL);
1064 }
1065 else /* clear */
1066 {
1067 ASSERT(Argv[0][1] == 'c');
1068 KdbpDeleteBreakPoint(BreakPointNr, NULL);
1069 }
1070
1071 return TRUE;
1072 }
1073
1074 /*!\brief Sets a software or hardware (memory) breakpoint at the given address.
1075 */
1076 static BOOLEAN
1077 KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[])
1078 {
1079 ULONGLONG Result = 0;
1080 ULONG_PTR Address;
1081 KDB_BREAKPOINT_TYPE Type;
1082 UCHAR Size = 0;
1083 KDB_ACCESS_TYPE AccessType = 0;
1084 ULONG AddressArgIndex, i;
1085 LONG ConditionArgIndex;
1086 BOOLEAN Global = TRUE;
1087
1088 if (Argv[0][2] == 'x') /* software breakpoint */
1089 {
1090 if (Argc < 2)
1091 {
1092 KdbpPrint("bpx: Address argument required.\n");
1093 return TRUE;
1094 }
1095
1096 AddressArgIndex = 1;
1097 Type = KdbBreakPointSoftware;
1098 }
1099 else /* memory breakpoint */
1100 {
1101 ASSERT(Argv[0][2] == 'm');
1102
1103 if (Argc < 2)
1104 {
1105 KdbpPrint("bpm: Access type argument required (one of r, w, rw, x)\n");
1106 return TRUE;
1107 }
1108
1109 if (_stricmp(Argv[1], "x") == 0)
1110 AccessType = KdbAccessExec;
1111 else if (_stricmp(Argv[1], "r") == 0)
1112 AccessType = KdbAccessRead;
1113 else if (_stricmp(Argv[1], "w") == 0)
1114 AccessType = KdbAccessWrite;
1115 else if (_stricmp(Argv[1], "rw") == 0)
1116 AccessType = KdbAccessReadWrite;
1117 else
1118 {
1119 KdbpPrint("bpm: Unknown access type '%s'\n", Argv[1]);
1120 return TRUE;
1121 }
1122
1123 if (Argc < 3)
1124 {
1125 KdbpPrint("bpm: %s argument required.\n", AccessType == KdbAccessExec ? "Address" : "Memory size");
1126 return TRUE;
1127 }
1128
1129 AddressArgIndex = 3;
1130 if (_stricmp(Argv[2], "byte") == 0)
1131 Size = 1;
1132 else if (_stricmp(Argv[2], "word") == 0)
1133 Size = 2;
1134 else if (_stricmp(Argv[2], "dword") == 0)
1135 Size = 4;
1136 else if (AccessType == KdbAccessExec)
1137 {
1138 Size = 1;
1139 AddressArgIndex--;
1140 }
1141 else
1142 {
1143 KdbpPrint("bpm: Unknown memory size '%s'\n", Argv[2]);
1144 return TRUE;
1145 }
1146
1147 if (Argc <= AddressArgIndex)
1148 {
1149 KdbpPrint("bpm: Address argument required.\n");
1150 return TRUE;
1151 }
1152
1153 Type = KdbBreakPointHardware;
1154 }
1155
1156 /* Put the arguments back together */
1157 ConditionArgIndex = -1;
1158 for (i = AddressArgIndex; i < (Argc-1); i++)
1159 {
1160 if (strcmp(Argv[i+1], "IF") == 0) /* IF found */
1161 {
1162 ConditionArgIndex = i + 2;
1163 if (ConditionArgIndex >= Argc)
1164 {
1165 KdbpPrint("%s: IF requires condition expression.\n", Argv[0]);
1166 return TRUE;
1167 }
1168
1169 for (i = ConditionArgIndex; i < (Argc-1); i++)
1170 Argv[i][strlen(Argv[i])] = ' ';
1171
1172 break;
1173 }
1174
1175 Argv[i][strlen(Argv[i])] = ' ';
1176 }
1177
1178 /* Evaluate the address expression */
1179 if (!KdbpEvaluateExpression(Argv[AddressArgIndex],
1180 sizeof("kdb:> ")-1 + (Argv[AddressArgIndex]-Argv[0]),
1181 &Result))
1182 {
1183 return TRUE;
1184 }
1185
1186 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1187 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1188
1189 Address = (ULONG_PTR)Result;
1190
1191 KdbpInsertBreakPoint(Address, Type, Size, AccessType,
1192 (ConditionArgIndex < 0) ? NULL : Argv[ConditionArgIndex],
1193 Global, NULL);
1194
1195 return TRUE;
1196 }
1197
1198 /*!\brief Lists threads or switches to another thread context.
1199 */
1200 static BOOLEAN
1201 KdbpCmdThread(
1202 ULONG Argc,
1203 PCHAR Argv[])
1204 {
1205 PLIST_ENTRY Entry;
1206 PETHREAD Thread = NULL;
1207 PEPROCESS Process = NULL;
1208 BOOLEAN ReferencedThread = FALSE, ReferencedProcess = FALSE;
1209 PULONG Esp;
1210 PULONG Ebp;
1211 ULONG Eip;
1212 ULONG ul = 0;
1213 PCHAR State, pend, str1, str2;
1214 static const PCHAR ThreadStateToString[DeferredReady+1] =
1215 {
1216 "Initialized", "Ready", "Running",
1217 "Standby", "Terminated", "Waiting",
1218 "Transition", "DeferredReady"
1219 };
1220
1221 ASSERT(KdbCurrentProcess);
1222
1223 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1224 {
1225 Process = KdbCurrentProcess;
1226
1227 if (Argc >= 3)
1228 {
1229 ul = strtoul(Argv[2], &pend, 0);
1230 if (Argv[2] == pend)
1231 {
1232 KdbpPrint("thread: '%s' is not a valid process id!\n", Argv[2]);
1233 return TRUE;
1234 }
1235
1236 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1237 {
1238 KdbpPrint("thread: Invalid process id!\n");
1239 return TRUE;
1240 }
1241
1242 /* Remember our reference */
1243 ReferencedProcess = TRUE;
1244 }
1245
1246 Entry = Process->ThreadListHead.Flink;
1247 if (Entry == &Process->ThreadListHead)
1248 {
1249 if (Argc >= 3)
1250 KdbpPrint("No threads in process 0x%08x!\n", ul);
1251 else
1252 KdbpPrint("No threads in current process!\n");
1253
1254 if (ReferencedProcess)
1255 ObDereferenceObject(Process);
1256
1257 return TRUE;
1258 }
1259
1260 KdbpPrint(" TID State Prior. Affinity EBP EIP\n");
1261 do
1262 {
1263 Thread = CONTAINING_RECORD(Entry, ETHREAD, ThreadListEntry);
1264
1265 if (Thread == KdbCurrentThread)
1266 {
1267 str1 = "\x1b[1m*";
1268 str2 = "\x1b[0m";
1269 }
1270 else
1271 {
1272 str1 = " ";
1273 str2 = "";
1274 }
1275
1276 if (!Thread->Tcb.InitialStack)
1277 {
1278 /* Thread has no kernel stack (probably terminated) */
1279 Esp = Ebp = NULL;
1280 Eip = 0;
1281 }
1282 else if (Thread->Tcb.TrapFrame)
1283 {
1284 if (Thread->Tcb.TrapFrame->PreviousPreviousMode == KernelMode)
1285 Esp = (PULONG)Thread->Tcb.TrapFrame->TempEsp;
1286 else
1287 Esp = (PULONG)Thread->Tcb.TrapFrame->HardwareEsp;
1288
1289 Ebp = (PULONG)Thread->Tcb.TrapFrame->Ebp;
1290 Eip = Thread->Tcb.TrapFrame->Eip;
1291 }
1292 else
1293 {
1294 Esp = (PULONG)Thread->Tcb.KernelStack;
1295 Ebp = (PULONG)Esp[4];
1296 Eip = 0;
1297
1298 if (Ebp) /* FIXME: Should we attach to the process to read Ebp[1]? */
1299 KdbpSafeReadMemory(&Eip, Ebp + 1, sizeof (Eip));
1300 }
1301
1302 if (Thread->Tcb.State < (DeferredReady + 1))
1303 State = ThreadStateToString[Thread->Tcb.State];
1304 else
1305 State = "Unknown";
1306
1307 KdbpPrint(" %s0x%08x %-11s %3d 0x%08x 0x%08x 0x%08x%s\n",
1308 str1,
1309 Thread->Cid.UniqueThread,
1310 State,
1311 Thread->Tcb.Priority,
1312 Thread->Tcb.Affinity,
1313 Ebp,
1314 Eip,
1315 str2);
1316
1317 Entry = Entry->Flink;
1318 }
1319 while (Entry != &Process->ThreadListHead);
1320
1321 /* Release our reference, if any */
1322 if (ReferencedProcess)
1323 ObDereferenceObject(Process);
1324 }
1325 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1326 {
1327 if (Argc < 3)
1328 {
1329 KdbpPrint("thread attach: thread id argument required!\n");
1330 return TRUE;
1331 }
1332
1333 ul = strtoul(Argv[2], &pend, 0);
1334 if (Argv[2] == pend)
1335 {
1336 KdbpPrint("thread attach: '%s' is not a valid thread id!\n", Argv[2]);
1337 return TRUE;
1338 }
1339
1340 if (!KdbpAttachToThread((PVOID)ul))
1341 {
1342 return TRUE;
1343 }
1344
1345 KdbpPrint("Attached to thread 0x%08x.\n", ul);
1346 }
1347 else
1348 {
1349 Thread = KdbCurrentThread;
1350
1351 if (Argc >= 2)
1352 {
1353 ul = strtoul(Argv[1], &pend, 0);
1354 if (Argv[1] == pend)
1355 {
1356 KdbpPrint("thread: '%s' is not a valid thread id!\n", Argv[1]);
1357 return TRUE;
1358 }
1359
1360 if (!NT_SUCCESS(PsLookupThreadByThreadId((PVOID)ul, &Thread)))
1361 {
1362 KdbpPrint("thread: Invalid thread id!\n");
1363 return TRUE;
1364 }
1365
1366 /* Remember our reference */
1367 ReferencedThread = TRUE;
1368 }
1369
1370 if (Thread->Tcb.State < (DeferredReady + 1))
1371 State = ThreadStateToString[Thread->Tcb.State];
1372 else
1373 State = "Unknown";
1374
1375 KdbpPrint("%s"
1376 " TID: 0x%08x\n"
1377 " State: %s (0x%x)\n"
1378 " Priority: %d\n"
1379 " Affinity: 0x%08x\n"
1380 " Initial Stack: 0x%08x\n"
1381 " Stack Limit: 0x%08x\n"
1382 " Stack Base: 0x%08x\n"
1383 " Kernel Stack: 0x%08x\n"
1384 " Trap Frame: 0x%08x\n"
1385 " NPX State: %s (0x%x)\n",
1386 (Argc < 2) ? "Current Thread:\n" : "",
1387 Thread->Cid.UniqueThread,
1388 State, Thread->Tcb.State,
1389 Thread->Tcb.Priority,
1390 Thread->Tcb.Affinity,
1391 Thread->Tcb.InitialStack,
1392 Thread->Tcb.StackLimit,
1393 Thread->Tcb.StackBase,
1394 Thread->Tcb.KernelStack,
1395 Thread->Tcb.TrapFrame,
1396 NPX_STATE_TO_STRING(Thread->Tcb.NpxState), Thread->Tcb.NpxState);
1397
1398 /* Release our reference if we had one */
1399 if (ReferencedThread)
1400 ObDereferenceObject(Thread);
1401 }
1402
1403 return TRUE;
1404 }
1405
1406 /*!\brief Lists processes or switches to another process context.
1407 */
1408 static BOOLEAN
1409 KdbpCmdProc(
1410 ULONG Argc,
1411 PCHAR Argv[])
1412 {
1413 PLIST_ENTRY Entry;
1414 PEPROCESS Process;
1415 BOOLEAN ReferencedProcess = FALSE;
1416 PCHAR State, pend, str1, str2;
1417 ULONG ul;
1418 extern LIST_ENTRY PsActiveProcessHead;
1419
1420 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1421 {
1422 Entry = PsActiveProcessHead.Flink;
1423 if (!Entry || Entry == &PsActiveProcessHead)
1424 {
1425 KdbpPrint("No processes in the system!\n");
1426 return TRUE;
1427 }
1428
1429 KdbpPrint(" PID State Filename\n");
1430 do
1431 {
1432 Process = CONTAINING_RECORD(Entry, EPROCESS, ActiveProcessLinks);
1433
1434 if (Process == KdbCurrentProcess)
1435 {
1436 str1 = "\x1b[1m*";
1437 str2 = "\x1b[0m";
1438 }
1439 else
1440 {
1441 str1 = " ";
1442 str2 = "";
1443 }
1444
1445 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1446 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1447
1448 KdbpPrint(" %s0x%08x %-10s %s%s\n",
1449 str1,
1450 Process->UniqueProcessId,
1451 State,
1452 Process->ImageFileName,
1453 str2);
1454
1455 Entry = Entry->Flink;
1456 }
1457 while(Entry != &PsActiveProcessHead);
1458 }
1459 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1460 {
1461 if (Argc < 3)
1462 {
1463 KdbpPrint("process attach: process id argument required!\n");
1464 return TRUE;
1465 }
1466
1467 ul = strtoul(Argv[2], &pend, 0);
1468 if (Argv[2] == pend)
1469 {
1470 KdbpPrint("process attach: '%s' is not a valid process id!\n", Argv[2]);
1471 return TRUE;
1472 }
1473
1474 if (!KdbpAttachToProcess((PVOID)ul))
1475 {
1476 return TRUE;
1477 }
1478
1479 KdbpPrint("Attached to process 0x%08x, thread 0x%08x.\n", (ULONG)ul,
1480 (ULONG)KdbCurrentThread->Cid.UniqueThread);
1481 }
1482 else
1483 {
1484 Process = KdbCurrentProcess;
1485
1486 if (Argc >= 2)
1487 {
1488 ul = strtoul(Argv[1], &pend, 0);
1489 if (Argv[1] == pend)
1490 {
1491 KdbpPrint("proc: '%s' is not a valid process id!\n", Argv[1]);
1492 return TRUE;
1493 }
1494
1495 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1496 {
1497 KdbpPrint("proc: Invalid process id!\n");
1498 return TRUE;
1499 }
1500
1501 /* Remember our reference */
1502 ReferencedProcess = TRUE;
1503 }
1504
1505 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1506 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1507 KdbpPrint("%s"
1508 " PID: 0x%08x\n"
1509 " State: %s (0x%x)\n"
1510 " Image Filename: %s\n",
1511 (Argc < 2) ? "Current process:\n" : "",
1512 Process->UniqueProcessId,
1513 State, Process->Pcb.State,
1514 Process->ImageFileName);
1515
1516 /* Release our reference, if any */
1517 if (ReferencedProcess)
1518 ObDereferenceObject(Process);
1519 }
1520
1521 return TRUE;
1522 }
1523
1524 /*!\brief Lists loaded modules or the one containing the specified address.
1525 */
1526 static BOOLEAN
1527 KdbpCmdMod(
1528 ULONG Argc,
1529 PCHAR Argv[])
1530 {
1531 ULONGLONG Result = 0;
1532 ULONG_PTR Address;
1533 PLDR_DATA_TABLE_ENTRY LdrEntry;
1534 BOOLEAN DisplayOnlyOneModule = FALSE;
1535 INT i = 0;
1536
1537 if (Argc >= 2)
1538 {
1539 /* Put the arguments back together */
1540 Argc--;
1541 while (--Argc >= 1)
1542 Argv[Argc][strlen(Argv[Argc])] = ' ';
1543
1544 /* Evaluate the expression */
1545 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
1546 {
1547 return TRUE;
1548 }
1549
1550 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1551 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1552
1553 Address = (ULONG_PTR)Result;
1554
1555 if (!KdbpSymFindModule((PVOID)Address, NULL, -1, &LdrEntry))
1556 {
1557 KdbpPrint("No module containing address 0x%p found!\n", Address);
1558 return TRUE;
1559 }
1560
1561 DisplayOnlyOneModule = TRUE;
1562 }
1563 else
1564 {
1565 if (!KdbpSymFindModule(NULL, NULL, 0, &LdrEntry))
1566 {
1567 ULONG_PTR ntoskrnlBase = ((ULONG_PTR)KdbpCmdMod) & 0xfff00000;
1568 KdbpPrint(" Base Size Name\n");
1569 KdbpPrint(" %08x %08x %s\n", ntoskrnlBase, 0, "ntoskrnl.exe");
1570 return TRUE;
1571 }
1572
1573 i = 1;
1574 }
1575
1576 KdbpPrint(" Base Size Name\n");
1577 for (;;)
1578 {
1579 KdbpPrint(" %08x %08x %wZ\n", LdrEntry->DllBase, LdrEntry->SizeOfImage, &LdrEntry->BaseDllName);
1580
1581 if(DisplayOnlyOneModule || !KdbpSymFindModule(NULL, NULL, i++, &LdrEntry))
1582 break;
1583 }
1584
1585 return TRUE;
1586 }
1587
1588 /*!\brief Displays GDT, LDT or IDTd.
1589 */
1590 static BOOLEAN
1591 KdbpCmdGdtLdtIdt(
1592 ULONG Argc,
1593 PCHAR Argv[])
1594 {
1595 KDESCRIPTOR Reg;
1596 ULONG SegDesc[2];
1597 ULONG SegBase;
1598 ULONG SegLimit;
1599 PCHAR SegType;
1600 USHORT SegSel;
1601 UCHAR Type, Dpl;
1602 INT i;
1603 ULONG ul;
1604
1605 if (Argv[0][0] == 'i')
1606 {
1607 /* Read IDTR */
1608 __sidt(&Reg.Limit);
1609
1610 if (Reg.Limit < 7)
1611 {
1612 KdbpPrint("Interrupt descriptor table is empty.\n");
1613 return TRUE;
1614 }
1615
1616 KdbpPrint("IDT Base: 0x%08x Limit: 0x%04x\n", Reg.Base, Reg.Limit);
1617 KdbpPrint(" Idx Type Seg. Sel. Offset DPL\n");
1618
1619 for (i = 0; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1620 {
1621 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1622 {
1623 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1624 return TRUE;
1625 }
1626
1627 Dpl = ((SegDesc[1] >> 13) & 3);
1628 if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1629 SegType = "TASKGATE";
1630 else if ((SegDesc[1] & 0x1fe0) == 0x0e00) /* 32 bit Interrupt gate */
1631 SegType = "INTGATE32";
1632 else if ((SegDesc[1] & 0x1fe0) == 0x0600) /* 16 bit Interrupt gate */
1633 SegType = "INTGATE16";
1634 else if ((SegDesc[1] & 0x1fe0) == 0x0f00) /* 32 bit Trap gate */
1635 SegType = "TRAPGATE32";
1636 else if ((SegDesc[1] & 0x1fe0) == 0x0700) /* 16 bit Trap gate */
1637 SegType = "TRAPGATE16";
1638 else
1639 SegType = "UNKNOWN";
1640
1641 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1642 {
1643 KdbpPrint(" %03d %-10s [NP] [NP] %02d\n",
1644 i / 8, SegType, Dpl);
1645 }
1646 else if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1647 {
1648 SegSel = SegDesc[0] >> 16;
1649 KdbpPrint(" %03d %-10s 0x%04x %02d\n",
1650 i / 8, SegType, SegSel, Dpl);
1651 }
1652 else
1653 {
1654 SegSel = SegDesc[0] >> 16;
1655 SegBase = (SegDesc[1] & 0xffff0000) | (SegDesc[0] & 0x0000ffff);
1656 KdbpPrint(" %03d %-10s 0x%04x 0x%08x %02d\n",
1657 i / 8, SegType, SegSel, SegBase, Dpl);
1658 }
1659 }
1660 }
1661 else
1662 {
1663 ul = 0;
1664
1665 if (Argv[0][0] == 'g')
1666 {
1667 /* Read GDTR */
1668 Ke386GetGlobalDescriptorTable(&Reg.Limit);
1669 i = 8;
1670 }
1671 else
1672 {
1673 ASSERT(Argv[0][0] == 'l');
1674
1675 /* Read LDTR */
1676 Reg.Limit = Ke386GetLocalDescriptorTable();
1677 Reg.Base = 0;
1678 i = 0;
1679 ul = 1 << 2;
1680 }
1681
1682 if (Reg.Limit < 7)
1683 {
1684 KdbpPrint("%s descriptor table is empty.\n",
1685 Argv[0][0] == 'g' ? "Global" : "Local");
1686 return TRUE;
1687 }
1688
1689 KdbpPrint("%cDT Base: 0x%08x Limit: 0x%04x\n",
1690 Argv[0][0] == 'g' ? 'G' : 'L', Reg.Base, Reg.Limit);
1691 KdbpPrint(" Idx Sel. Type Base Limit DPL Attribs\n");
1692
1693 for (; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1694 {
1695 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1696 {
1697 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1698 return TRUE;
1699 }
1700
1701 Dpl = ((SegDesc[1] >> 13) & 3);
1702 Type = ((SegDesc[1] >> 8) & 0xf);
1703
1704 SegBase = SegDesc[0] >> 16;
1705 SegBase |= (SegDesc[1] & 0xff) << 16;
1706 SegBase |= SegDesc[1] & 0xff000000;
1707 SegLimit = SegDesc[0] & 0x0000ffff;
1708 SegLimit |= (SegDesc[1] >> 16) & 0xf;
1709
1710 if ((SegDesc[1] & (1 << 23)) != 0)
1711 {
1712 SegLimit *= 4096;
1713 SegLimit += 4095;
1714 }
1715 else
1716 {
1717 SegLimit++;
1718 }
1719
1720 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1721 {
1722 switch (Type)
1723 {
1724 case 1: SegType = "TSS16(Avl)"; break;
1725 case 2: SegType = "LDT"; break;
1726 case 3: SegType = "TSS16(Busy)"; break;
1727 case 4: SegType = "CALLGATE16"; break;
1728 case 5: SegType = "TASKGATE"; break;
1729 case 6: SegType = "INTGATE16"; break;
1730 case 7: SegType = "TRAPGATE16"; break;
1731 case 9: SegType = "TSS32(Avl)"; break;
1732 case 11: SegType = "TSS32(Busy)"; break;
1733 case 12: SegType = "CALLGATE32"; break;
1734 case 14: SegType = "INTGATE32"; break;
1735 case 15: SegType = "INTGATE32"; break;
1736 default: SegType = "UNKNOWN"; break;
1737 }
1738
1739 if (!(Type >= 1 && Type <= 3) &&
1740 Type != 9 && Type != 11)
1741 {
1742 SegBase = 0;
1743 SegLimit = 0;
1744 }
1745 }
1746 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1747 {
1748 if ((SegDesc[1] & (1 << 22)) != 0)
1749 SegType = "DATA32";
1750 else
1751 SegType = "DATA16";
1752 }
1753 else /* Code segment */
1754 {
1755 if ((SegDesc[1] & (1 << 22)) != 0)
1756 SegType = "CODE32";
1757 else
1758 SegType = "CODE16";
1759 }
1760
1761 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1762 {
1763 KdbpPrint(" %03d 0x%04x %-11s [NP] [NP] %02d NP\n",
1764 i / 8, i | Dpl | ul, SegType, Dpl);
1765 }
1766 else
1767 {
1768 KdbpPrint(" %03d 0x%04x %-11s 0x%08x 0x%08x %02d ",
1769 i / 8, i | Dpl | ul, SegType, SegBase, SegLimit, Dpl);
1770
1771 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1772 {
1773 /* FIXME: Display system segment */
1774 }
1775 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1776 {
1777 if ((SegDesc[1] & (1 << 10)) != 0) /* Expand-down */
1778 KdbpPrint(" E");
1779
1780 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/W" : " R");
1781
1782 if ((SegDesc[1] & (1 << 8)) != 0)
1783 KdbpPrint(" A");
1784 }
1785 else /* Code segment */
1786 {
1787 if ((SegDesc[1] & (1 << 10)) != 0) /* Conforming */
1788 KdbpPrint(" C");
1789
1790 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/X" : " X");
1791
1792 if ((SegDesc[1] & (1 << 8)) != 0)
1793 KdbpPrint(" A");
1794 }
1795
1796 if ((SegDesc[1] & (1 << 20)) != 0)
1797 KdbpPrint(" AVL");
1798
1799 KdbpPrint("\n");
1800 }
1801 }
1802 }
1803
1804 return TRUE;
1805 }
1806
1807 /*!\brief Displays the KPCR
1808 */
1809 static BOOLEAN
1810 KdbpCmdPcr(
1811 ULONG Argc,
1812 PCHAR Argv[])
1813 {
1814 PKIPCR Pcr = (PKIPCR)KeGetPcr();
1815
1816 KdbpPrint("Current PCR is at 0x%08x.\n", (INT)Pcr);
1817 KdbpPrint(" Tib.ExceptionList: 0x%08x\n"
1818 " Tib.StackBase: 0x%08x\n"
1819 " Tib.StackLimit: 0x%08x\n"
1820 " Tib.SubSystemTib: 0x%08x\n"
1821 " Tib.FiberData/Version: 0x%08x\n"
1822 " Tib.ArbitraryUserPointer: 0x%08x\n"
1823 " Tib.Self: 0x%08x\n"
1824 " Self: 0x%08x\n"
1825 " PCRCB: 0x%08x\n"
1826 " Irql: 0x%02x\n"
1827 " IRR: 0x%08x\n"
1828 " IrrActive: 0x%08x\n"
1829 " IDR: 0x%08x\n"
1830 " KdVersionBlock: 0x%08x\n"
1831 " IDT: 0x%08x\n"
1832 " GDT: 0x%08x\n"
1833 " TSS: 0x%08x\n"
1834 " MajorVersion: 0x%04x\n"
1835 " MinorVersion: 0x%04x\n"
1836 " SetMember: 0x%08x\n"
1837 " StallScaleFactor: 0x%08x\n"
1838 " Number: 0x%02x\n"
1839 " L2CacheAssociativity: 0x%02x\n"
1840 " VdmAlert: 0x%08x\n"
1841 " L2CacheSize: 0x%08x\n"
1842 " InterruptMode: 0x%08x\n",
1843 Pcr->NtTib.ExceptionList, Pcr->NtTib.StackBase, Pcr->NtTib.StackLimit,
1844 Pcr->NtTib.SubSystemTib, Pcr->NtTib.FiberData, Pcr->NtTib.ArbitraryUserPointer,
1845 Pcr->NtTib.Self, Pcr->Self, Pcr->Prcb, Pcr->Irql, Pcr->IRR, Pcr->IrrActive,
1846 Pcr->IDR, Pcr->KdVersionBlock, Pcr->IDT, Pcr->GDT, Pcr->TSS,
1847 Pcr->MajorVersion, Pcr->MinorVersion, Pcr->SetMember, Pcr->StallScaleFactor,
1848 Pcr->Number, Pcr->SecondLevelCacheAssociativity,
1849 Pcr->VdmAlert, Pcr->SecondLevelCacheSize, Pcr->InterruptMode);
1850
1851 return TRUE;
1852 }
1853
1854 /*!\brief Displays the TSS
1855 */
1856 static BOOLEAN
1857 KdbpCmdTss(
1858 ULONG Argc,
1859 PCHAR Argv[])
1860 {
1861 KTSS *Tss = KeGetPcr()->TSS;
1862
1863 KdbpPrint("Current TSS is at 0x%08x.\n", (INT)Tss);
1864 KdbpPrint(" Eip: 0x%08x\n"
1865 " Es: 0x%04x\n"
1866 " Cs: 0x%04x\n"
1867 " Ss: 0x%04x\n"
1868 " Ds: 0x%04x\n"
1869 " Fs: 0x%04x\n"
1870 " Gs: 0x%04x\n"
1871 " IoMapBase: 0x%04x\n",
1872 Tss->Eip, Tss->Es, Tss->Cs, Tss->Ds, Tss->Fs, Tss->Gs, Tss->IoMapBase);
1873
1874 return TRUE;
1875 }
1876
1877 /*!\brief Bugchecks the system.
1878 */
1879 static BOOLEAN
1880 KdbpCmdBugCheck(
1881 ULONG Argc,
1882 PCHAR Argv[])
1883 {
1884 /* Set the flag and quit looping */
1885 KdbpBugCheckRequested = TRUE;
1886
1887 return FALSE;
1888 }
1889
1890 /*!\brief Sets or displays a config variables value.
1891 */
1892 static BOOLEAN
1893 KdbpCmdSet(
1894 ULONG Argc,
1895 PCHAR Argv[])
1896 {
1897 LONG l;
1898 BOOLEAN First;
1899 PCHAR pend = 0;
1900 KDB_ENTER_CONDITION ConditionFirst = KdbDoNotEnter;
1901 KDB_ENTER_CONDITION ConditionLast = KdbDoNotEnter;
1902
1903 static const PCHAR ExceptionNames[21] =
1904 {
1905 "ZERODEVIDE", "DEBUGTRAP", "NMI", "INT3", "OVERFLOW", "BOUND", "INVALIDOP",
1906 "NOMATHCOP", "DOUBLEFAULT", "RESERVED(9)", "INVALIDTSS", "SEGMENTNOTPRESENT",
1907 "STACKFAULT", "GPF", "PAGEFAULT", "RESERVED(15)", "MATHFAULT", "ALIGNMENTCHECK",
1908 "MACHINECHECK", "SIMDFAULT", "OTHERS"
1909 };
1910
1911 if (Argc == 1)
1912 {
1913 KdbpPrint("Available settings:\n");
1914 KdbpPrint(" syntax [intel|at&t]\n");
1915 KdbpPrint(" condition [exception|*] [first|last] [never|always|kmode|umode]\n");
1916 KdbpPrint(" break_on_module_load [true|false]\n");
1917 }
1918 else if (strcmp(Argv[1], "syntax") == 0)
1919 {
1920 if (Argc == 2)
1921 {
1922 KdbpPrint("syntax = %s\n", KdbUseIntelSyntax ? "intel" : "at&t");
1923 }
1924 else if (Argc >= 3)
1925 {
1926 if (_stricmp(Argv[2], "intel") == 0)
1927 KdbUseIntelSyntax = TRUE;
1928 else if (_stricmp(Argv[2], "at&t") == 0)
1929 KdbUseIntelSyntax = FALSE;
1930 else
1931 KdbpPrint("Unknown syntax '%s'.\n", Argv[2]);
1932 }
1933 }
1934 else if (strcmp(Argv[1], "condition") == 0)
1935 {
1936 if (Argc == 2)
1937 {
1938 KdbpPrint("Conditions: (First) (Last)\n");
1939 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames) - 1; l++)
1940 {
1941 if (!ExceptionNames[l])
1942 continue;
1943
1944 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
1945 ASSERT(0);
1946
1947 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
1948 ASSERT(0);
1949
1950 KdbpPrint(" #%02d %-20s %-8s %-8s\n", l, ExceptionNames[l],
1951 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1952 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1953 }
1954
1955 ASSERT(l == (RTL_NUMBER_OF(ExceptionNames) - 1));
1956 KdbpPrint(" %-20s %-8s %-8s\n", ExceptionNames[l],
1957 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1958 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1959 }
1960 else
1961 {
1962 if (Argc >= 5 && strcmp(Argv[2], "*") == 0) /* Allow * only when setting condition */
1963 {
1964 l = -1;
1965 }
1966 else
1967 {
1968 l = strtoul(Argv[2], &pend, 0);
1969
1970 if (Argv[2] == pend)
1971 {
1972 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames); l++)
1973 {
1974 if (!ExceptionNames[l])
1975 continue;
1976
1977 if (_stricmp(ExceptionNames[l], Argv[2]) == 0)
1978 break;
1979 }
1980 }
1981
1982 if (l >= RTL_NUMBER_OF(ExceptionNames))
1983 {
1984 KdbpPrint("Unknown exception '%s'.\n", Argv[2]);
1985 return TRUE;
1986 }
1987 }
1988
1989 if (Argc > 4)
1990 {
1991 if (_stricmp(Argv[3], "first") == 0)
1992 First = TRUE;
1993 else if (_stricmp(Argv[3], "last") == 0)
1994 First = FALSE;
1995 else
1996 {
1997 KdbpPrint("set condition: second argument must be 'first' or 'last'\n");
1998 return TRUE;
1999 }
2000
2001 if (_stricmp(Argv[4], "never") == 0)
2002 ConditionFirst = KdbDoNotEnter;
2003 else if (_stricmp(Argv[4], "always") == 0)
2004 ConditionFirst = KdbEnterAlways;
2005 else if (_stricmp(Argv[4], "umode") == 0)
2006 ConditionFirst = KdbEnterFromUmode;
2007 else if (_stricmp(Argv[4], "kmode") == 0)
2008 ConditionFirst = KdbEnterFromKmode;
2009 else
2010 {
2011 KdbpPrint("set condition: third argument must be 'never', 'always', 'umode' or 'kmode'\n");
2012 return TRUE;
2013 }
2014
2015 if (!KdbpSetEnterCondition(l, First, ConditionFirst))
2016 {
2017 if (l >= 0)
2018 KdbpPrint("Couldn't change condition for exception #%02d\n", l);
2019 else
2020 KdbpPrint("Couldn't change condition for all exceptions\n", l);
2021 }
2022 }
2023 else /* Argc >= 3 */
2024 {
2025 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
2026 ASSERT(0);
2027
2028 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
2029 ASSERT(0);
2030
2031 if (l < (RTL_NUMBER_OF(ExceptionNames) - 1))
2032 {
2033 KdbpPrint("Condition for exception #%02d (%s): FirstChance %s LastChance %s\n",
2034 l, ExceptionNames[l],
2035 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2036 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2037 }
2038 else
2039 {
2040 KdbpPrint("Condition for all other exceptions: FirstChance %s LastChance %s\n",
2041 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2042 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2043 }
2044 }
2045 }
2046 }
2047 else if (strcmp(Argv[1], "break_on_module_load") == 0)
2048 {
2049 if (Argc == 2)
2050 KdbpPrint("break_on_module_load = %s\n", KdbBreakOnModuleLoad ? "enabled" : "disabled");
2051 else if (Argc >= 3)
2052 {
2053 if (_stricmp(Argv[2], "enable") == 0 || _stricmp(Argv[2], "enabled") == 0 || _stricmp(Argv[2], "true") == 0)
2054 KdbBreakOnModuleLoad = TRUE;
2055 else if (_stricmp(Argv[2], "disable") == 0 || _stricmp(Argv[2], "disabled") == 0 || _stricmp(Argv[2], "false") == 0)
2056 KdbBreakOnModuleLoad = FALSE;
2057 else
2058 KdbpPrint("Unknown setting '%s'.\n", Argv[2]);
2059 }
2060 }
2061 else
2062 {
2063 KdbpPrint("Unknown setting '%s'.\n", Argv[1]);
2064 }
2065
2066 return TRUE;
2067 }
2068
2069 /*!\brief Displays help screen.
2070 */
2071 static BOOLEAN
2072 KdbpCmdHelp(
2073 ULONG Argc,
2074 PCHAR Argv[])
2075 {
2076 ULONG i;
2077
2078 KdbpPrint("Kernel debugger commands:\n");
2079 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2080 {
2081 if (!KdbDebuggerCommands[i].Syntax) /* Command group */
2082 {
2083 if (i > 0)
2084 KdbpPrint("\n");
2085
2086 KdbpPrint("\x1b[7m* %s:\x1b[0m\n", KdbDebuggerCommands[i].Help);
2087 continue;
2088 }
2089
2090 KdbpPrint(" %-20s - %s\n",
2091 KdbDebuggerCommands[i].Syntax,
2092 KdbDebuggerCommands[i].Help);
2093 }
2094
2095 return TRUE;
2096 }
2097
2098 /*!\brief Prints the given string with printf-like formatting.
2099 *
2100 * \param Format Format of the string/arguments.
2101 * \param ... Variable number of arguments matching the format specified in \a Format.
2102 *
2103 * \note Doesn't correctly handle \\t and terminal escape sequences when calculating the
2104 * number of lines required to print a single line from the Buffer in the terminal.
2105 */
2106 VOID
2107 KdbpPrint(
2108 IN PCHAR Format,
2109 IN ... OPTIONAL)
2110 {
2111 static CHAR Buffer[4096];
2112 static BOOLEAN TerminalInitialized = FALSE;
2113 static BOOLEAN TerminalConnected = FALSE;
2114 static BOOLEAN TerminalReportsSize = TRUE;
2115 CHAR c = '\0';
2116 PCHAR p, p2;
2117 ULONG Length;
2118 ULONG i, j;
2119 LONG RowsPrintedByTerminal;
2120 ULONG ScanCode;
2121 va_list ap;
2122
2123 /* Check if the user has aborted output of the current command */
2124 if (KdbOutputAborted)
2125 return;
2126
2127 /* Initialize the terminal */
2128 if (!TerminalInitialized)
2129 {
2130 DbgPrint("\x1b[7h"); /* Enable linewrap */
2131
2132 /* Query terminal type */
2133 /*DbgPrint("\x1b[Z");*/
2134 DbgPrint("\x05");
2135
2136 TerminalInitialized = TRUE;
2137 Length = 0;
2138 KeStallExecutionProcessor(100000);
2139
2140 for (;;)
2141 {
2142 c = KdbpTryGetCharSerial(5000);
2143 if (c == -1)
2144 break;
2145
2146 Buffer[Length++] = c;
2147 if (Length >= (sizeof (Buffer) - 1))
2148 break;
2149 }
2150
2151 Buffer[Length] = '\0';
2152 if (Length > 0)
2153 TerminalConnected = TRUE;
2154 }
2155
2156 /* Get number of rows and columns in terminal */
2157 if ((KdbNumberOfRowsTerminal < 0) || (KdbNumberOfColsTerminal < 0) ||
2158 (KdbNumberOfRowsPrinted) == 0) /* Refresh terminal size each time when number of rows printed is 0 */
2159 {
2160 if ((KdbDebugState & KD_DEBUG_KDSERIAL) && TerminalConnected && TerminalReportsSize)
2161 {
2162 /* Try to query number of rows from terminal. A reply looks like "\x1b[8;24;80t" */
2163 TerminalReportsSize = FALSE;
2164 KeStallExecutionProcessor(100000);
2165 DbgPrint("\x1b[18t");
2166 c = KdbpTryGetCharSerial(5000);
2167
2168 if (c == KEY_ESC)
2169 {
2170 c = KdbpTryGetCharSerial(5000);
2171 if (c == '[')
2172 {
2173 Length = 0;
2174
2175 for (;;)
2176 {
2177 c = KdbpTryGetCharSerial(5000);
2178 if (c == -1)
2179 break;
2180
2181 Buffer[Length++] = c;
2182 if (isalpha(c) || Length >= (sizeof (Buffer) - 1))
2183 break;
2184 }
2185
2186 Buffer[Length] = '\0';
2187 if (Buffer[0] == '8' && Buffer[1] == ';')
2188 {
2189 for (i = 2; (i < Length) && (Buffer[i] != ';'); i++);
2190
2191 if (Buffer[i] == ';')
2192 {
2193 Buffer[i++] = '\0';
2194
2195 /* Number of rows is now at Buffer + 2 and number of cols at Buffer + i */
2196 KdbNumberOfRowsTerminal = strtoul(Buffer + 2, NULL, 0);
2197 KdbNumberOfColsTerminal = strtoul(Buffer + i, NULL, 0);
2198 TerminalReportsSize = TRUE;
2199 }
2200 }
2201 }
2202 /* Clear further characters */
2203 while ((c = KdbpTryGetCharSerial(5000)) != -1);
2204 }
2205 }
2206
2207 if (KdbNumberOfRowsTerminal <= 0)
2208 {
2209 /* Set number of rows to the default. */
2210 KdbNumberOfRowsTerminal = 24;
2211 }
2212 else if (KdbNumberOfColsTerminal <= 0)
2213 {
2214 /* Set number of cols to the default. */
2215 KdbNumberOfColsTerminal = 80;
2216 }
2217 }
2218
2219 /* Get the string */
2220 va_start(ap, Format);
2221 Length = _vsnprintf(Buffer, sizeof (Buffer) - 1, Format, ap);
2222 Buffer[Length] = '\0';
2223 va_end(ap);
2224
2225 p = Buffer;
2226 while (p[0] != '\0')
2227 {
2228 i = strcspn(p, "\n");
2229
2230 /* Calculate the number of lines which will be printed in the terminal
2231 * when outputting the current line
2232 */
2233 if (i > 0)
2234 RowsPrintedByTerminal = (i + KdbNumberOfColsPrinted - 1) / KdbNumberOfColsTerminal;
2235 else
2236 RowsPrintedByTerminal = 0;
2237
2238 if (p[i] == '\n')
2239 RowsPrintedByTerminal++;
2240
2241 /*DbgPrint("!%d!%d!%d!%d!", KdbNumberOfRowsPrinted, KdbNumberOfColsPrinted, i, RowsPrintedByTerminal);*/
2242
2243 /* Display a prompt if we printed one screen full of text */
2244 if (KdbNumberOfRowsTerminal > 0 &&
2245 (LONG)(KdbNumberOfRowsPrinted + RowsPrintedByTerminal) >= KdbNumberOfRowsTerminal)
2246 {
2247 if (KdbNumberOfColsPrinted > 0)
2248 DbgPrint("\n");
2249
2250 DbgPrint("--- Press q to abort, any other key to continue ---");
2251
2252 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2253 c = KdbpGetCharSerial();
2254 else
2255 c = KdbpGetCharKeyboard(&ScanCode);
2256
2257 if (c == '\r')
2258 {
2259 /* Try to read '\n' which might follow '\r' - if \n is not received here
2260 * it will be interpreted as "return" when the next command should be read.
2261 */
2262 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2263 c = KdbpTryGetCharSerial(5);
2264 else
2265 c = KdbpTryGetCharKeyboard(&ScanCode, 5);
2266 }
2267
2268 DbgPrint("\n");
2269 if (c == 'q')
2270 {
2271 KdbOutputAborted = TRUE;
2272 return;
2273 }
2274
2275 KdbNumberOfRowsPrinted = 0;
2276 KdbNumberOfColsPrinted = 0;
2277 }
2278
2279 /* Insert a NUL after the line and print only the current line. */
2280 if (p[i] == '\n' && p[i + 1] != '\0')
2281 {
2282 c = p[i + 1];
2283 p[i + 1] = '\0';
2284 }
2285 else
2286 {
2287 c = '\0';
2288 }
2289
2290 /* Remove escape sequences from the line if there's no terminal connected */
2291 if (!TerminalConnected)
2292 {
2293 while ((p2 = strrchr(p, '\x1b'))) /* Look for escape character */
2294 {
2295 if (p2[1] == '[')
2296 {
2297 j = 2;
2298 while (!isalpha(p2[j++]));
2299 strcpy(p2, p2 + j);
2300 }
2301 else
2302 {
2303 strcpy(p2, p2 + 1);
2304 }
2305 }
2306 }
2307
2308 DbgPrint("%s", p);
2309
2310 if (c != '\0')
2311 p[i + 1] = c;
2312
2313 /* Set p to the start of the next line and
2314 * remember the number of rows/cols printed
2315 */
2316 p += i;
2317 if (p[0] == '\n')
2318 {
2319 p++;
2320 KdbNumberOfColsPrinted = 0;
2321 }
2322 else
2323 {
2324 ASSERT(p[0] == '\0');
2325 KdbNumberOfColsPrinted += i;
2326 }
2327
2328 KdbNumberOfRowsPrinted += RowsPrintedByTerminal;
2329 }
2330 }
2331
2332 /*!\brief Appends a command to the command history
2333 *
2334 * \param Command Pointer to the command to append to the history.
2335 */
2336 static VOID
2337 KdbpCommandHistoryAppend(
2338 IN PCHAR Command)
2339 {
2340 ULONG Length1 = strlen(Command) + 1;
2341 ULONG Length2 = 0;
2342 INT i;
2343 PCHAR Buffer;
2344
2345 ASSERT(Length1 <= RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2346
2347 if (Length1 <= 1 ||
2348 (KdbCommandHistory[KdbCommandHistoryIndex] &&
2349 strcmp(KdbCommandHistory[KdbCommandHistoryIndex], Command) == 0))
2350 {
2351 return;
2352 }
2353
2354 /* Calculate Length1 and Length2 */
2355 Buffer = KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex;
2356 KdbCommandHistoryBufferIndex += Length1;
2357 if (KdbCommandHistoryBufferIndex >= (LONG)RTL_NUMBER_OF(KdbCommandHistoryBuffer))
2358 {
2359 KdbCommandHistoryBufferIndex -= RTL_NUMBER_OF(KdbCommandHistoryBuffer);
2360 Length2 = KdbCommandHistoryBufferIndex;
2361 Length1 -= Length2;
2362 }
2363
2364 /* Remove previous commands until there is enough space to append the new command */
2365 for (i = KdbCommandHistoryIndex; KdbCommandHistory[i];)
2366 {
2367 if ((Length2 > 0 &&
2368 (KdbCommandHistory[i] >= Buffer ||
2369 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))) ||
2370 (Length2 <= 0 &&
2371 (KdbCommandHistory[i] >= Buffer &&
2372 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))))
2373 {
2374 KdbCommandHistory[i] = NULL;
2375 }
2376
2377 i--;
2378 if (i < 0)
2379 i = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2380
2381 if (i == KdbCommandHistoryIndex)
2382 break;
2383 }
2384
2385 /* Make sure the new command history entry is free */
2386 KdbCommandHistoryIndex++;
2387 KdbCommandHistoryIndex %= RTL_NUMBER_OF(KdbCommandHistory);
2388 if (KdbCommandHistory[KdbCommandHistoryIndex])
2389 {
2390 KdbCommandHistory[KdbCommandHistoryIndex] = NULL;
2391 }
2392
2393 /* Append command */
2394 KdbCommandHistory[KdbCommandHistoryIndex] = Buffer;
2395 ASSERT((KdbCommandHistory[KdbCommandHistoryIndex] + Length1) <= KdbCommandHistoryBuffer + RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2396 memcpy(KdbCommandHistory[KdbCommandHistoryIndex], Command, Length1);
2397 if (Length2 > 0)
2398 {
2399 memcpy(KdbCommandHistoryBuffer, Command + Length1, Length2);
2400 }
2401 }
2402
2403 /*!\brief Reads a line of user-input.
2404 *
2405 * \param Buffer Buffer to store the input into. Trailing newlines are removed.
2406 * \param Size Size of \a Buffer.
2407 *
2408 * \note Accepts only \n newlines, \r is ignored.
2409 */
2410 static VOID
2411 KdbpReadCommand(
2412 OUT PCHAR Buffer,
2413 IN ULONG Size)
2414 {
2415 CHAR Key;
2416 PCHAR Orig = Buffer;
2417 ULONG ScanCode = 0;
2418 BOOLEAN EchoOn;
2419 static CHAR LastCommand[1024] = "";
2420 static CHAR NextKey = '\0';
2421 INT CmdHistIndex = -1;
2422 INT i;
2423
2424 EchoOn = !((KdbDebugState & KD_DEBUG_KDNOECHO) != 0);
2425
2426 for (;;)
2427 {
2428 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2429 {
2430 Key = (NextKey == '\0') ? KdbpGetCharSerial() : NextKey;
2431 NextKey = '\0';
2432 ScanCode = 0;
2433 if (Key == KEY_ESC) /* ESC */
2434 {
2435 Key = KdbpGetCharSerial();
2436 if (Key == '[')
2437 {
2438 Key = KdbpGetCharSerial();
2439
2440 switch (Key)
2441 {
2442 case 'A':
2443 ScanCode = KEY_SCAN_UP;
2444 break;
2445 case 'B':
2446 ScanCode = KEY_SCAN_DOWN;
2447 break;
2448 case 'C':
2449 break;
2450 case 'D':
2451 break;
2452 }
2453 }
2454 }
2455 }
2456 else
2457 {
2458 ScanCode = 0;
2459 Key = (NextKey == '\0') ? KdbpGetCharKeyboard(&ScanCode) : NextKey;
2460 NextKey = '\0';
2461 }
2462
2463 if ((ULONG)(Buffer - Orig) >= (Size - 1))
2464 {
2465 /* Buffer is full, accept only newlines */
2466 if (Key != '\n')
2467 continue;
2468 }
2469
2470 if (Key == '\r')
2471 {
2472 /* Read the next char - this is to throw away a \n which most clients should
2473 * send after \r.
2474 */
2475 KeStallExecutionProcessor(100000);
2476
2477 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2478 NextKey = KdbpTryGetCharSerial(5);
2479 else
2480 NextKey = KdbpTryGetCharKeyboard(&ScanCode, 5);
2481
2482 if (NextKey == '\n' || NextKey == -1) /* \n or no response at all */
2483 NextKey = '\0';
2484
2485 KdbpPrint("\n");
2486
2487 /*
2488 * Repeat the last command if the user presses enter. Reduces the
2489 * risk of RSI when single-stepping.
2490 */
2491 if (Buffer == Orig)
2492 {
2493 strncpy(Buffer, LastCommand, Size);
2494 Buffer[Size - 1] = '\0';
2495 }
2496 else
2497 {
2498 *Buffer = '\0';
2499 strncpy(LastCommand, Orig, sizeof (LastCommand));
2500 LastCommand[sizeof (LastCommand) - 1] = '\0';
2501 }
2502
2503 return;
2504 }
2505 else if (Key == KEY_BS || Key == KEY_DEL)
2506 {
2507 if (Buffer > Orig)
2508 {
2509 Buffer--;
2510 *Buffer = 0;
2511
2512 if (EchoOn)
2513 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2514 else
2515 KdbpPrint(" %c", KEY_BS);
2516 }
2517 }
2518 else if (ScanCode == KEY_SCAN_UP)
2519 {
2520 BOOLEAN Print = TRUE;
2521
2522 if (CmdHistIndex < 0)
2523 {
2524 CmdHistIndex = KdbCommandHistoryIndex;
2525 }
2526 else
2527 {
2528 i = CmdHistIndex - 1;
2529
2530 if (i < 0)
2531 CmdHistIndex = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2532
2533 if (KdbCommandHistory[i] && i != KdbCommandHistoryIndex)
2534 CmdHistIndex = i;
2535 else
2536 Print = FALSE;
2537 }
2538
2539 if (Print && KdbCommandHistory[CmdHistIndex])
2540 {
2541 while (Buffer > Orig)
2542 {
2543 Buffer--;
2544 *Buffer = 0;
2545
2546 if (EchoOn)
2547 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2548 else
2549 KdbpPrint(" %c", KEY_BS);
2550 }
2551
2552 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2553 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2554 Orig[i] = '\0';
2555 Buffer = Orig + i;
2556 KdbpPrint("%s", Orig);
2557 }
2558 }
2559 else if (ScanCode == KEY_SCAN_DOWN)
2560 {
2561 if (CmdHistIndex > 0 && CmdHistIndex != KdbCommandHistoryIndex)
2562 {
2563 i = CmdHistIndex + 1;
2564 if (i >= (INT)RTL_NUMBER_OF(KdbCommandHistory))
2565 i = 0;
2566
2567 if (KdbCommandHistory[i])
2568 {
2569 CmdHistIndex = i;
2570 while (Buffer > Orig)
2571 {
2572 Buffer--;
2573 *Buffer = 0;
2574
2575 if (EchoOn)
2576 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2577 else
2578 KdbpPrint(" %c", KEY_BS);
2579 }
2580
2581 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2582 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2583 Orig[i] = '\0';
2584 Buffer = Orig + i;
2585 KdbpPrint("%s", Orig);
2586 }
2587 }
2588 }
2589 else
2590 {
2591 if (EchoOn)
2592 KdbpPrint("%c", Key);
2593
2594 *Buffer = Key;
2595 Buffer++;
2596 }
2597 }
2598 }
2599
2600 /*!\brief Parses command line and executes command if found
2601 *
2602 * \param Command Command line to parse and execute if possible.
2603 *
2604 * \retval TRUE Don't continue execution.
2605 * \retval FALSE Continue execution (leave KDB)
2606 */
2607 static BOOLEAN
2608 KdbpDoCommand(
2609 IN PCHAR Command)
2610 {
2611 ULONG i;
2612 PCHAR p;
2613 ULONG Argc;
2614 static PCH Argv[256];
2615 static CHAR OrigCommand[1024];
2616
2617 strncpy(OrigCommand, Command, sizeof(OrigCommand) - 1);
2618 OrigCommand[sizeof(OrigCommand) - 1] = '\0';
2619
2620 Argc = 0;
2621 p = Command;
2622
2623 for (;;)
2624 {
2625 while (*p == '\t' || *p == ' ')
2626 p++;
2627
2628 if (*p == '\0')
2629 break;
2630
2631 i = strcspn(p, "\t ");
2632 Argv[Argc++] = p;
2633 p += i;
2634 if (*p == '\0')
2635 break;
2636
2637 *p = '\0';
2638 p++;
2639 }
2640
2641 if (Argc < 1)
2642 return TRUE;
2643
2644 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2645 {
2646 if (!KdbDebuggerCommands[i].Name)
2647 continue;
2648
2649 if (strcmp(KdbDebuggerCommands[i].Name, Argv[0]) == 0)
2650 {
2651 return KdbDebuggerCommands[i].Fn(Argc, Argv);
2652 }
2653 }
2654
2655 KdbpPrint("Command '%s' is unknown.\n", OrigCommand);
2656 return TRUE;
2657 }
2658
2659 /*!\brief KDB Main Loop.
2660 *
2661 * \param EnteredOnSingleStep TRUE if KDB was entered on single step.
2662 */
2663 VOID
2664 KdbpCliMainLoop(
2665 IN BOOLEAN EnteredOnSingleStep)
2666 {
2667 static CHAR Command[1024];
2668 BOOLEAN Continue;
2669
2670 if (EnteredOnSingleStep)
2671 {
2672 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
2673 {
2674 KdbpPrint("<%x>", KdbCurrentTrapFrame->Tf.Eip);
2675 }
2676
2677 KdbpPrint(": ");
2678 if (KdbpDisassemble(KdbCurrentTrapFrame->Tf.Eip, KdbUseIntelSyntax) < 0)
2679 {
2680 KdbpPrint("<INVALID>");
2681 }
2682 KdbpPrint("\n");
2683 }
2684
2685 /* Flush the input buffer */
2686 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2687 {
2688 while (KdbpTryGetCharSerial(1) != -1);
2689 }
2690 else
2691 {
2692 ULONG ScanCode;
2693 while (KdbpTryGetCharKeyboard(&ScanCode, 1) != -1);
2694 }
2695
2696 /* Main loop */
2697 do
2698 {
2699 /* Print the prompt */
2700 KdbpPrint("kdb:> ");
2701
2702 /* Read a command and remember it */
2703 KdbpReadCommand(Command, sizeof (Command));
2704 KdbpCommandHistoryAppend(Command);
2705
2706 /* Reset the number of rows/cols printed and output aborted state */
2707 KdbNumberOfRowsPrinted = KdbNumberOfColsPrinted = 0;
2708 KdbOutputAborted = FALSE;
2709
2710 /* Call the command */
2711 Continue = KdbpDoCommand(Command);
2712 KdbOutputAborted = FALSE;
2713 }
2714 while (Continue);
2715 }
2716
2717 /*!\brief Called when a module is loaded.
2718 *
2719 * \param Name Filename of the module which was loaded.
2720 */
2721 VOID
2722 KdbpCliModuleLoaded(
2723 IN PUNICODE_STRING Name)
2724 {
2725 if (!KdbBreakOnModuleLoad)
2726 return;
2727
2728 KdbpPrint("Module %wZ loaded.\n", Name);
2729 DbgBreakPointWithStatus(DBG_STATUS_CONTROL_C);
2730 }
2731
2732 /*!\brief This function is called by KdbEnterDebuggerException...
2733 *
2734 * Used to interpret the init file in a context with a trapframe setup
2735 * (KdbpCliInit call KdbEnter which will call KdbEnterDebuggerException which will
2736 * call this function if KdbInitFileBuffer is not NULL.
2737 */
2738 VOID
2739 KdbpCliInterpretInitFile()
2740 {
2741 PCHAR p1, p2;
2742 INT i;
2743 CHAR c;
2744
2745 /* Execute the commands in the init file */
2746 DPRINT("KDB: Executing KDBinit file...\n");
2747 p1 = KdbInitFileBuffer;
2748 while (p1[0] != '\0')
2749 {
2750 i = strcspn(p1, "\r\n");
2751 if (i > 0)
2752 {
2753 c = p1[i];
2754 p1[i] = '\0';
2755
2756 /* Look for "break" command and comments */
2757 p2 = p1;
2758
2759 while (isspace(p2[0]))
2760 p2++;
2761
2762 if (strncmp(p2, "break", sizeof("break")-1) == 0 &&
2763 (p2[sizeof("break")-1] == '\0' || isspace(p2[sizeof("break")-1])))
2764 {
2765 /* break into the debugger */
2766 KdbpCliMainLoop(FALSE);
2767 }
2768 else if (p2[0] != '#' && p2[0] != '\0') /* Ignore empty lines and comments */
2769 {
2770 KdbpDoCommand(p1);
2771 }
2772
2773 p1[i] = c;
2774 }
2775
2776 p1 += i;
2777 while (p1[0] == '\r' || p1[0] == '\n')
2778 p1++;
2779 }
2780 DPRINT("KDB: KDBinit executed\n");
2781 }
2782
2783 /*!\brief Called when KDB is initialized
2784 *
2785 * Reads the KDBinit file from the SystemRoot\system32\drivers\etc directory and executes it.
2786 */
2787 VOID
2788 KdbpCliInit()
2789 {
2790 NTSTATUS Status;
2791 OBJECT_ATTRIBUTES ObjectAttributes;
2792 UNICODE_STRING FileName;
2793 IO_STATUS_BLOCK Iosb;
2794 FILE_STANDARD_INFORMATION FileStdInfo;
2795 HANDLE hFile = NULL;
2796 INT FileSize;
2797 PCHAR FileBuffer;
2798 ULONG OldEflags;
2799
2800 /* Initialize the object attributes */
2801 RtlInitUnicodeString(&FileName, L"\\SystemRoot\\system32\\drivers\\etc\\KDBinit");
2802 InitializeObjectAttributes(&ObjectAttributes, &FileName, 0, NULL, NULL);
2803
2804 /* Open the file */
2805 Status = ZwOpenFile(&hFile, FILE_READ_DATA, &ObjectAttributes, &Iosb, 0,
2806 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
2807 FILE_NO_INTERMEDIATE_BUFFERING);
2808 if (!NT_SUCCESS(Status))
2809 {
2810 DPRINT("Could not open \\SystemRoot\\system32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
2811 return;
2812 }
2813
2814 /* Get the size of the file */
2815 Status = ZwQueryInformationFile(hFile, &Iosb, &FileStdInfo, sizeof (FileStdInfo),
2816 FileStandardInformation);
2817 if (!NT_SUCCESS(Status))
2818 {
2819 ZwClose(hFile);
2820 DPRINT("Could not query size of \\SystemRoot\\system32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
2821 return;
2822 }
2823 FileSize = FileStdInfo.EndOfFile.u.LowPart;
2824
2825 /* Allocate memory for the file */
2826 FileBuffer = ExAllocatePool(PagedPool, FileSize + 1); /* add 1 byte for terminating '\0' */
2827 if (!FileBuffer)
2828 {
2829 ZwClose(hFile);
2830 DPRINT("Could not allocate %d bytes for KDBinit file\n", FileSize);
2831 return;
2832 }
2833
2834 /* Load file into memory */
2835 Status = ZwReadFile(hFile, 0, 0, 0, &Iosb, FileBuffer, FileSize, 0, 0);
2836 ZwClose(hFile);
2837
2838 if (!NT_SUCCESS(Status) && Status != STATUS_END_OF_FILE)
2839 {
2840 ExFreePool(FileBuffer);
2841 DPRINT("Could not read KDBinit file into memory (Status 0x%lx)\n", Status);
2842 return;
2843 }
2844
2845 FileSize = min(FileSize, (INT)Iosb.Information);
2846 FileBuffer[FileSize] = '\0';
2847
2848 /* Enter critical section */
2849 OldEflags = __readeflags();
2850 _disable();
2851
2852 /* Interpret the init file... */
2853 KdbInitFileBuffer = FileBuffer;
2854 KdbEnter();
2855 KdbInitFileBuffer = NULL;
2856
2857 /* Leave critical section */
2858 __writeeflags(OldEflags);
2859
2860 ExFreePool(FileBuffer);
2861 }
2862
2863 VOID
2864 NTAPI
2865 KdpSerialDebugPrint(
2866 LPSTR Message,
2867 ULONG Length
2868 );
2869
2870 STRING KdpPromptString = RTL_CONSTANT_STRING("kdb:> ");
2871 extern KSPIN_LOCK KdpSerialSpinLock;
2872
2873 ULONG
2874 NTAPI
2875 KdpPrompt(IN LPSTR InString,
2876 IN USHORT InStringLength,
2877 OUT LPSTR OutString,
2878 IN USHORT OutStringLength)
2879 {
2880 USHORT i;
2881 CHAR Response;
2882 ULONG DummyScanCode;
2883 KIRQL OldIrql;
2884
2885 /* Acquire the printing spinlock without waiting at raised IRQL */
2886 while (TRUE)
2887 {
2888 /* Wait when the spinlock becomes available */
2889 while (!KeTestSpinLock(&KdpSerialSpinLock));
2890
2891 /* Spinlock was free, raise IRQL */
2892 KeRaiseIrql(HIGH_LEVEL, &OldIrql);
2893
2894 /* Try to get the spinlock */
2895 if (KeTryToAcquireSpinLockAtDpcLevel(&KdpSerialSpinLock))
2896 break;
2897
2898 /* Someone else got the spinlock, lower IRQL back */
2899 KeLowerIrql(OldIrql);
2900 }
2901
2902 /* Loop the string to send */
2903 for (i = 0; i < InStringLength; i++)
2904 {
2905 /* Print it to serial */
2906 KdPortPutByteEx(&SerialPortInfo, *(PCHAR)(InString + i));
2907 }
2908
2909 /* Print a new line for log neatness */
2910 KdPortPutByteEx(&SerialPortInfo, '\r');
2911 KdPortPutByteEx(&SerialPortInfo, '\n');
2912
2913 /* Print the kdb prompt */
2914 for (i = 0; i < KdpPromptString.Length; i++)
2915 {
2916 /* Print it to serial */
2917 KdPortPutByteEx(&SerialPortInfo,
2918 *(KdpPromptString.Buffer + i));
2919 }
2920
2921 /* Loop the whole string */
2922 for (i = 0; i < OutStringLength; i++)
2923 {
2924 /* Check if this is serial debugging mode */
2925 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2926 {
2927 /* Get the character from serial */
2928 do
2929 {
2930 Response = KdbpTryGetCharSerial(MAXULONG);
2931 } while (Response == -1);
2932 }
2933 else
2934 {
2935 /* Get the response from the keyboard */
2936 do
2937 {
2938 Response = KdbpTryGetCharKeyboard(&DummyScanCode, MAXULONG);
2939 } while (Response == -1);
2940 }
2941
2942 /* Check for return */
2943 if (Response == '\r')
2944 {
2945 /*
2946 * We might need to discard the next '\n'.
2947 * Wait a bit to make sure we receive it.
2948 */
2949 KeStallExecutionProcessor(100000);
2950
2951 /* Check the mode */
2952 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2953 {
2954 /* Read and discard the next character, if any */
2955 KdbpTryGetCharSerial(5);
2956 }
2957 else
2958 {
2959 /* Read and discard the next character, if any */
2960 KdbpTryGetCharKeyboard(&DummyScanCode, 5);
2961 }
2962
2963 /*
2964 * Null terminate the output string -- documentation states that
2965 * DbgPrompt does not null terminate, but it does
2966 */
2967 *(PCHAR)(OutString + i) = 0;
2968
2969 /* Print a new line */
2970 KdPortPutByteEx(&SerialPortInfo, '\r');
2971 KdPortPutByteEx(&SerialPortInfo, '\n');
2972
2973 /* Release spinlock */
2974 KiReleaseSpinLock(&KdpSerialSpinLock);
2975
2976 /* Lower IRQL back */
2977 KeLowerIrql(OldIrql);
2978
2979 /* Return the length */
2980 return OutStringLength + 1;
2981 }
2982
2983 /* Write it back and print it to the log */
2984 *(PCHAR)(OutString + i) = Response;
2985 KdPortPutByteEx(&SerialPortInfo, Response);
2986 }
2987
2988 /* Print a new line */
2989 KdPortPutByteEx(&SerialPortInfo, '\r');
2990 KdPortPutByteEx(&SerialPortInfo, '\n');
2991
2992 /* Release spinlock */
2993 KiReleaseSpinLock(&KdpSerialSpinLock);
2994
2995 /* Lower IRQL back */
2996 KeLowerIrql(OldIrql);
2997
2998 /* Return the length */
2999 return OutStringLength;
3000 }