projects / reactos.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
Sync with trunk (r48414)
[reactos.git] / 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 Count;
794 ULONG ul;
795 ULONGLONG Result = 0;
796 ULONG_PTR Frame = KdbCurrentTrapFrame->Tf.Ebp;
797 ULONG_PTR Address;
798
799 if (Argc >= 2)
800 {
801 /* Check for [L count] part */
802 ul = 0;
803
804 if (strcmp(Argv[Argc-2], "L") == 0)
805 {
806 ul = strtoul(Argv[Argc-1], NULL, 0);
807 if (ul > 0)
808 {
809 Count = ul;
810 Argc -= 2;
811 }
812 }
813 else if (Argv[Argc-1][0] == 'L')
814 {
815 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
816 if (ul > 0)
817 {
818 Count = ul;
819 Argc--;
820 }
821 }
822
823 /* Put the remaining arguments back together */
824 Argc--;
825 for (ul = 1; ul < Argc; ul++)
826 {
827 Argv[ul][strlen(Argv[ul])] = ' ';
828 }
829 Argc++;
830 }
831
832 /* Check if frame addr or thread id is given. */
833 if (Argc > 1)
834 {
835 if (Argv[1][0] == '*')
836 {
837 Argv[1]++;
838
839 /* Evaluate the expression */
840 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
841 return TRUE;
842
843 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
844 KdbpPrint("Warning: Address %I64x is beeing truncated\n",Result);
845
846 Frame = (ULONG_PTR)Result;
847 }
848 else
849 {
850 KdbpPrint("Thread backtrace not supported yet!\n");
851 return TRUE;
852 }
853 }
854 else
855 {
856 KdbpPrint("Eip:\n");
857
858 /* Try printing the function at EIP */
859 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
860 KdbpPrint("<%08x>\n", KdbCurrentTrapFrame->Tf.Eip);
861 else
862 KdbpPrint("\n");
863 }
864
865 KdbpPrint("Frames:\n");
866 for (;;)
867 {
868 if (Frame == 0)
869 break;
870
871 if (!NT_SUCCESS(KdbpSafeReadMemory(&Address, (PVOID)(Frame + sizeof(ULONG_PTR)), sizeof (ULONG_PTR))))
872 {
873 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame + sizeof(ULONG_PTR));
874 break;
875 }
876
877 /* Print the location of the call instruction */
878 if (!KdbSymPrintAddress((PVOID)(Address - 5)))
879 KdbpPrint("<%08x>\n", Address);
880 else
881 KdbpPrint("\n");
882
883 if (Address == 0)
884 break;
885
886 if (!NT_SUCCESS(KdbpSafeReadMemory(&Frame, (PVOID)Frame, sizeof (ULONG_PTR))))
887 {
888 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame);
889 break;
890 }
891 }
892
893 return TRUE;
894 }
895
896 /*!\brief Continues execution of the system/leaves KDB.
897 */
898 static BOOLEAN
899 KdbpCmdContinue(
900 ULONG Argc,
901 PCHAR Argv[])
902 {
903 /* Exit the main loop */
904 return FALSE;
905 }
906
907 /*!\brief Continues execution of the system/leaves KDB.
908 */
909 static BOOLEAN
910 KdbpCmdStep(
911 ULONG Argc,
912 PCHAR Argv[])
913 {
914 ULONG Count = 1;
915
916 if (Argc > 1)
917 {
918 Count = strtoul(Argv[1], NULL, 0);
919 if (Count == 0)
920 {
921 KdbpPrint("%s: Integer argument required\n", Argv[0]);
922 return TRUE;
923 }
924 }
925
926 if (Argv[0][0] == 'n')
927 KdbSingleStepOver = TRUE;
928 else
929 KdbSingleStepOver = FALSE;
930
931 /* Set the number of single steps and return to the interrupted code. */
932 KdbNumSingleSteps = Count;
933
934 return FALSE;
935 }
936
937 /*!\brief Lists breakpoints.
938 */
939 static BOOLEAN
940 KdbpCmdBreakPointList(
941 ULONG Argc,
942 PCHAR Argv[])
943 {
944 LONG l;
945 ULONG_PTR Address = 0;
946 KDB_BREAKPOINT_TYPE Type = 0;
947 KDB_ACCESS_TYPE AccessType = 0;
948 UCHAR Size = 0;
949 UCHAR DebugReg = 0;
950 BOOLEAN Enabled = FALSE;
951 BOOLEAN Global = FALSE;
952 PEPROCESS Process = NULL;
953 PCHAR str1, str2, ConditionExpr, GlobalOrLocal;
954 CHAR Buffer[20];
955
956 l = KdbpGetNextBreakPointNr(0);
957 if (l < 0)
958 {
959 KdbpPrint("No breakpoints.\n");
960 return TRUE;
961 }
962
963 KdbpPrint("Breakpoints:\n");
964 do
965 {
966 if (!KdbpGetBreakPointInfo(l, &Address, &Type, &Size, &AccessType, &DebugReg,
967 &Enabled, &Global, &Process, &ConditionExpr))
968 {
969 continue;
970 }
971
972 if (l == KdbLastBreakPointNr)
973 {
974 str1 = "\x1b[1m*";
975 str2 = "\x1b[0m";
976 }
977 else
978 {
979 str1 = " ";
980 str2 = "";
981 }
982
983 if (Global)
984 {
985 GlobalOrLocal = " global";
986 }
987 else
988 {
989 GlobalOrLocal = Buffer;
990 sprintf(Buffer, " PID 0x%08lx",
991 (ULONG)(Process ? Process->UniqueProcessId : INVALID_HANDLE_VALUE));
992 }
993
994 if (Type == KdbBreakPointSoftware || Type == KdbBreakPointTemporary)
995 {
996 KdbpPrint(" %s%03d BPX 0x%08x%s%s%s%s%s\n",
997 str1, l, Address,
998 Enabled ? "" : " disabled",
999 GlobalOrLocal,
1000 ConditionExpr ? " IF " : "",
1001 ConditionExpr ? ConditionExpr : "",
1002 str2);
1003 }
1004 else if (Type == KdbBreakPointHardware)
1005 {
1006 if (!Enabled)
1007 {
1008 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s disabled%s%s%s%s\n", str1, l, Address,
1009 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1010 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1011 GlobalOrLocal,
1012 ConditionExpr ? " IF " : "",
1013 ConditionExpr ? ConditionExpr : "",
1014 str2);
1015 }
1016 else
1017 {
1018 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s DR%d%s%s%s%s\n", str1, l, Address,
1019 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1020 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1021 DebugReg,
1022 GlobalOrLocal,
1023 ConditionExpr ? " IF " : "",
1024 ConditionExpr ? ConditionExpr : "",
1025 str2);
1026 }
1027 }
1028 }
1029 while ((l = KdbpGetNextBreakPointNr(l+1)) >= 0);
1030
1031 return TRUE;
1032 }
1033
1034 /*!\brief Enables, disables or clears a breakpoint.
1035 */
1036 static BOOLEAN
1037 KdbpCmdEnableDisableClearBreakPoint(
1038 ULONG Argc,
1039 PCHAR Argv[])
1040 {
1041 PCHAR pend;
1042 ULONG BreakPointNr;
1043
1044 if (Argc < 2)
1045 {
1046 KdbpPrint("%s: argument required\n", Argv[0]);
1047 return TRUE;
1048 }
1049
1050 pend = Argv[1];
1051 BreakPointNr = strtoul(Argv[1], &pend, 0);
1052 if (pend == Argv[1] || *pend != '\0')
1053 {
1054 KdbpPrint("%s: integer argument required\n", Argv[0]);
1055 return TRUE;
1056 }
1057
1058 if (Argv[0][1] == 'e') /* enable */
1059 {
1060 KdbpEnableBreakPoint(BreakPointNr, NULL);
1061 }
1062 else if (Argv [0][1] == 'd') /* disable */
1063 {
1064 KdbpDisableBreakPoint(BreakPointNr, NULL);
1065 }
1066 else /* clear */
1067 {
1068 ASSERT(Argv[0][1] == 'c');
1069 KdbpDeleteBreakPoint(BreakPointNr, NULL);
1070 }
1071
1072 return TRUE;
1073 }
1074
1075 /*!\brief Sets a software or hardware (memory) breakpoint at the given address.
1076 */
1077 static BOOLEAN
1078 KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[])
1079 {
1080 ULONGLONG Result = 0;
1081 ULONG_PTR Address;
1082 KDB_BREAKPOINT_TYPE Type;
1083 UCHAR Size = 0;
1084 KDB_ACCESS_TYPE AccessType = 0;
1085 ULONG AddressArgIndex, i;
1086 LONG ConditionArgIndex;
1087 BOOLEAN Global = TRUE;
1088
1089 if (Argv[0][2] == 'x') /* software breakpoint */
1090 {
1091 if (Argc < 2)
1092 {
1093 KdbpPrint("bpx: Address argument required.\n");
1094 return TRUE;
1095 }
1096
1097 AddressArgIndex = 1;
1098 Type = KdbBreakPointSoftware;
1099 }
1100 else /* memory breakpoint */
1101 {
1102 ASSERT(Argv[0][2] == 'm');
1103
1104 if (Argc < 2)
1105 {
1106 KdbpPrint("bpm: Access type argument required (one of r, w, rw, x)\n");
1107 return TRUE;
1108 }
1109
1110 if (_stricmp(Argv[1], "x") == 0)
1111 AccessType = KdbAccessExec;
1112 else if (_stricmp(Argv[1], "r") == 0)
1113 AccessType = KdbAccessRead;
1114 else if (_stricmp(Argv[1], "w") == 0)
1115 AccessType = KdbAccessWrite;
1116 else if (_stricmp(Argv[1], "rw") == 0)
1117 AccessType = KdbAccessReadWrite;
1118 else
1119 {
1120 KdbpPrint("bpm: Unknown access type '%s'\n", Argv[1]);
1121 return TRUE;
1122 }
1123
1124 if (Argc < 3)
1125 {
1126 KdbpPrint("bpm: %s argument required.\n", AccessType == KdbAccessExec ? "Address" : "Memory size");
1127 return TRUE;
1128 }
1129
1130 AddressArgIndex = 3;
1131 if (_stricmp(Argv[2], "byte") == 0)
1132 Size = 1;
1133 else if (_stricmp(Argv[2], "word") == 0)
1134 Size = 2;
1135 else if (_stricmp(Argv[2], "dword") == 0)
1136 Size = 4;
1137 else if (AccessType == KdbAccessExec)
1138 {
1139 Size = 1;
1140 AddressArgIndex--;
1141 }
1142 else
1143 {
1144 KdbpPrint("bpm: Unknown memory size '%s'\n", Argv[2]);
1145 return TRUE;
1146 }
1147
1148 if (Argc <= AddressArgIndex)
1149 {
1150 KdbpPrint("bpm: Address argument required.\n");
1151 return TRUE;
1152 }
1153
1154 Type = KdbBreakPointHardware;
1155 }
1156
1157 /* Put the arguments back together */
1158 ConditionArgIndex = -1;
1159 for (i = AddressArgIndex; i < (Argc-1); i++)
1160 {
1161 if (strcmp(Argv[i+1], "IF") == 0) /* IF found */
1162 {
1163 ConditionArgIndex = i + 2;
1164 if (ConditionArgIndex >= Argc)
1165 {
1166 KdbpPrint("%s: IF requires condition expression.\n", Argv[0]);
1167 return TRUE;
1168 }
1169
1170 for (i = ConditionArgIndex; i < (Argc-1); i++)
1171 Argv[i][strlen(Argv[i])] = ' ';
1172
1173 break;
1174 }
1175
1176 Argv[i][strlen(Argv[i])] = ' ';
1177 }
1178
1179 /* Evaluate the address expression */
1180 if (!KdbpEvaluateExpression(Argv[AddressArgIndex],
1181 sizeof("kdb:> ")-1 + (Argv[AddressArgIndex]-Argv[0]),
1182 &Result))
1183 {
1184 return TRUE;
1185 }
1186
1187 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1188 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1189
1190 Address = (ULONG_PTR)Result;
1191
1192 KdbpInsertBreakPoint(Address, Type, Size, AccessType,
1193 (ConditionArgIndex < 0) ? NULL : Argv[ConditionArgIndex],
1194 Global, NULL);
1195
1196 return TRUE;
1197 }
1198
1199 /*!\brief Lists threads or switches to another thread context.
1200 */
1201 static BOOLEAN
1202 KdbpCmdThread(
1203 ULONG Argc,
1204 PCHAR Argv[])
1205 {
1206 PLIST_ENTRY Entry;
1207 PETHREAD Thread = NULL;
1208 PEPROCESS Process = NULL;
1209 BOOLEAN ReferencedThread = FALSE, ReferencedProcess = FALSE;
1210 PULONG Esp;
1211 PULONG Ebp;
1212 ULONG Eip;
1213 ULONG ul = 0;
1214 PCHAR State, pend, str1, str2;
1215 static const PCHAR ThreadStateToString[DeferredReady+1] =
1216 {
1217 "Initialized", "Ready", "Running",
1218 "Standby", "Terminated", "Waiting",
1219 "Transition", "DeferredReady"
1220 };
1221
1222 ASSERT(KdbCurrentProcess);
1223
1224 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1225 {
1226 Process = KdbCurrentProcess;
1227
1228 if (Argc >= 3)
1229 {
1230 ul = strtoul(Argv[2], &pend, 0);
1231 if (Argv[2] == pend)
1232 {
1233 KdbpPrint("thread: '%s' is not a valid process id!\n", Argv[2]);
1234 return TRUE;
1235 }
1236
1237 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1238 {
1239 KdbpPrint("thread: Invalid process id!\n");
1240 return TRUE;
1241 }
1242
1243 /* Remember our reference */
1244 ReferencedProcess = TRUE;
1245 }
1246
1247 Entry = Process->ThreadListHead.Flink;
1248 if (Entry == &Process->ThreadListHead)
1249 {
1250 if (Argc >= 3)
1251 KdbpPrint("No threads in process 0x%08x!\n", ul);
1252 else
1253 KdbpPrint("No threads in current process!\n");
1254
1255 if (ReferencedProcess)
1256 ObDereferenceObject(Process);
1257
1258 return TRUE;
1259 }
1260
1261 KdbpPrint(" TID State Prior. Affinity EBP EIP\n");
1262 do
1263 {
1264 Thread = CONTAINING_RECORD(Entry, ETHREAD, ThreadListEntry);
1265
1266 if (Thread == KdbCurrentThread)
1267 {
1268 str1 = "\x1b[1m*";
1269 str2 = "\x1b[0m";
1270 }
1271 else
1272 {
1273 str1 = " ";
1274 str2 = "";
1275 }
1276
1277 if (!Thread->Tcb.InitialStack)
1278 {
1279 /* Thread has no kernel stack (probably terminated) */
1280 Esp = Ebp = NULL;
1281 Eip = 0;
1282 }
1283 else if (Thread->Tcb.TrapFrame)
1284 {
1285 if (Thread->Tcb.TrapFrame->PreviousPreviousMode == KernelMode)
1286 Esp = (PULONG)Thread->Tcb.TrapFrame->TempEsp;
1287 else
1288 Esp = (PULONG)Thread->Tcb.TrapFrame->HardwareEsp;
1289
1290 Ebp = (PULONG)Thread->Tcb.TrapFrame->Ebp;
1291 Eip = Thread->Tcb.TrapFrame->Eip;
1292 }
1293 else
1294 {
1295 Esp = (PULONG)Thread->Tcb.KernelStack;
1296 Ebp = (PULONG)Esp[4];
1297 Eip = 0;
1298
1299 if (Ebp) /* FIXME: Should we attach to the process to read Ebp[1]? */
1300 KdbpSafeReadMemory(&Eip, Ebp + 1, sizeof (Eip));
1301 }
1302
1303 if (Thread->Tcb.State < (DeferredReady + 1))
1304 State = ThreadStateToString[Thread->Tcb.State];
1305 else
1306 State = "Unknown";
1307
1308 KdbpPrint(" %s0x%08x %-11s %3d 0x%08x 0x%08x 0x%08x%s\n",
1309 str1,
1310 Thread->Cid.UniqueThread,
1311 State,
1312 Thread->Tcb.Priority,
1313 Thread->Tcb.Affinity,
1314 Ebp,
1315 Eip,
1316 str2);
1317
1318 Entry = Entry->Flink;
1319 }
1320 while (Entry != &Process->ThreadListHead);
1321
1322 /* Release our reference, if any */
1323 if (ReferencedProcess)
1324 ObDereferenceObject(Process);
1325 }
1326 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1327 {
1328 if (Argc < 3)
1329 {
1330 KdbpPrint("thread attach: thread id argument required!\n");
1331 return TRUE;
1332 }
1333
1334 ul = strtoul(Argv[2], &pend, 0);
1335 if (Argv[2] == pend)
1336 {
1337 KdbpPrint("thread attach: '%s' is not a valid thread id!\n", Argv[2]);
1338 return TRUE;
1339 }
1340
1341 if (!KdbpAttachToThread((PVOID)ul))
1342 {
1343 return TRUE;
1344 }
1345
1346 KdbpPrint("Attached to thread 0x%08x.\n", ul);
1347 }
1348 else
1349 {
1350 Thread = KdbCurrentThread;
1351
1352 if (Argc >= 2)
1353 {
1354 ul = strtoul(Argv[1], &pend, 0);
1355 if (Argv[1] == pend)
1356 {
1357 KdbpPrint("thread: '%s' is not a valid thread id!\n", Argv[1]);
1358 return TRUE;
1359 }
1360
1361 if (!NT_SUCCESS(PsLookupThreadByThreadId((PVOID)ul, &Thread)))
1362 {
1363 KdbpPrint("thread: Invalid thread id!\n");
1364 return TRUE;
1365 }
1366
1367 /* Remember our reference */
1368 ReferencedThread = TRUE;
1369 }
1370
1371 if (Thread->Tcb.State < (DeferredReady + 1))
1372 State = ThreadStateToString[Thread->Tcb.State];
1373 else
1374 State = "Unknown";
1375
1376 KdbpPrint("%s"
1377 " TID: 0x%08x\n"
1378 " State: %s (0x%x)\n"
1379 " Priority: %d\n"
1380 " Affinity: 0x%08x\n"
1381 " Initial Stack: 0x%08x\n"
1382 " Stack Limit: 0x%08x\n"
1383 " Stack Base: 0x%08x\n"
1384 " Kernel Stack: 0x%08x\n"
1385 " Trap Frame: 0x%08x\n"
1386 " NPX State: %s (0x%x)\n",
1387 (Argc < 2) ? "Current Thread:\n" : "",
1388 Thread->Cid.UniqueThread,
1389 State, Thread->Tcb.State,
1390 Thread->Tcb.Priority,
1391 Thread->Tcb.Affinity,
1392 Thread->Tcb.InitialStack,
1393 Thread->Tcb.StackLimit,
1394 Thread->Tcb.StackBase,
1395 Thread->Tcb.KernelStack,
1396 Thread->Tcb.TrapFrame,
1397 NPX_STATE_TO_STRING(Thread->Tcb.NpxState), Thread->Tcb.NpxState);
1398
1399 /* Release our reference if we had one */
1400 if (ReferencedThread)
1401 ObDereferenceObject(Thread);
1402 }
1403
1404 return TRUE;
1405 }
1406
1407 /*!\brief Lists processes or switches to another process context.
1408 */
1409 static BOOLEAN
1410 KdbpCmdProc(
1411 ULONG Argc,
1412 PCHAR Argv[])
1413 {
1414 PLIST_ENTRY Entry;
1415 PEPROCESS Process;
1416 BOOLEAN ReferencedProcess = FALSE;
1417 PCHAR State, pend, str1, str2;
1418 ULONG ul;
1419 extern LIST_ENTRY PsActiveProcessHead;
1420
1421 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1422 {
1423 Entry = PsActiveProcessHead.Flink;
1424 if (!Entry || Entry == &PsActiveProcessHead)
1425 {
1426 KdbpPrint("No processes in the system!\n");
1427 return TRUE;
1428 }
1429
1430 KdbpPrint(" PID State Filename\n");
1431 do
1432 {
1433 Process = CONTAINING_RECORD(Entry, EPROCESS, ActiveProcessLinks);
1434
1435 if (Process == KdbCurrentProcess)
1436 {
1437 str1 = "\x1b[1m*";
1438 str2 = "\x1b[0m";
1439 }
1440 else
1441 {
1442 str1 = " ";
1443 str2 = "";
1444 }
1445
1446 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1447 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1448
1449 KdbpPrint(" %s0x%08x %-10s %s%s\n",
1450 str1,
1451 Process->UniqueProcessId,
1452 State,
1453 Process->ImageFileName,
1454 str2);
1455
1456 Entry = Entry->Flink;
1457 }
1458 while(Entry != &PsActiveProcessHead);
1459 }
1460 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1461 {
1462 if (Argc < 3)
1463 {
1464 KdbpPrint("process attach: process id argument required!\n");
1465 return TRUE;
1466 }
1467
1468 ul = strtoul(Argv[2], &pend, 0);
1469 if (Argv[2] == pend)
1470 {
1471 KdbpPrint("process attach: '%s' is not a valid process id!\n", Argv[2]);
1472 return TRUE;
1473 }
1474
1475 if (!KdbpAttachToProcess((PVOID)ul))
1476 {
1477 return TRUE;
1478 }
1479
1480 KdbpPrint("Attached to process 0x%08x, thread 0x%08x.\n", (ULONG)ul,
1481 (ULONG)KdbCurrentThread->Cid.UniqueThread);
1482 }
1483 else
1484 {
1485 Process = KdbCurrentProcess;
1486
1487 if (Argc >= 2)
1488 {
1489 ul = strtoul(Argv[1], &pend, 0);
1490 if (Argv[1] == pend)
1491 {
1492 KdbpPrint("proc: '%s' is not a valid process id!\n", Argv[1]);
1493 return TRUE;
1494 }
1495
1496 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1497 {
1498 KdbpPrint("proc: Invalid process id!\n");
1499 return TRUE;
1500 }
1501
1502 /* Remember our reference */
1503 ReferencedProcess = TRUE;
1504 }
1505
1506 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1507 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1508 KdbpPrint("%s"
1509 " PID: 0x%08x\n"
1510 " State: %s (0x%x)\n"
1511 " Image Filename: %s\n",
1512 (Argc < 2) ? "Current process:\n" : "",
1513 Process->UniqueProcessId,
1514 State, Process->Pcb.State,
1515 Process->ImageFileName);
1516
1517 /* Release our reference, if any */
1518 if (ReferencedProcess)
1519 ObDereferenceObject(Process);
1520 }
1521
1522 return TRUE;
1523 }
1524
1525 /*!\brief Lists loaded modules or the one containing the specified address.
1526 */
1527 static BOOLEAN
1528 KdbpCmdMod(
1529 ULONG Argc,
1530 PCHAR Argv[])
1531 {
1532 ULONGLONG Result = 0;
1533 ULONG_PTR Address;
1534 PLDR_DATA_TABLE_ENTRY LdrEntry;
1535 BOOLEAN DisplayOnlyOneModule = FALSE;
1536 INT i = 0;
1537
1538 if (Argc >= 2)
1539 {
1540 /* Put the arguments back together */
1541 Argc--;
1542 while (--Argc >= 1)
1543 Argv[Argc][strlen(Argv[Argc])] = ' ';
1544
1545 /* Evaluate the expression */
1546 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
1547 {
1548 return TRUE;
1549 }
1550
1551 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1552 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1553
1554 Address = (ULONG_PTR)Result;
1555
1556 if (!KdbpSymFindModule((PVOID)Address, NULL, -1, &LdrEntry))
1557 {
1558 KdbpPrint("No module containing address 0x%p found!\n", Address);
1559 return TRUE;
1560 }
1561
1562 DisplayOnlyOneModule = TRUE;
1563 }
1564 else
1565 {
1566 if (!KdbpSymFindModule(NULL, NULL, 0, &LdrEntry))
1567 {
1568 ULONG_PTR ntoskrnlBase = ((ULONG_PTR)KdbpCmdMod) & 0xfff00000;
1569 KdbpPrint(" Base Size Name\n");
1570 KdbpPrint(" %08x %08x %s\n", ntoskrnlBase, 0, "ntoskrnl.exe");
1571 return TRUE;
1572 }
1573
1574 i = 1;
1575 }
1576
1577 KdbpPrint(" Base Size Name\n");
1578 for (;;)
1579 {
1580 KdbpPrint(" %08x %08x %wZ\n", LdrEntry->DllBase, LdrEntry->SizeOfImage, &LdrEntry->BaseDllName);
1581
1582 if(DisplayOnlyOneModule || !KdbpSymFindModule(NULL, NULL, i++, &LdrEntry))
1583 break;
1584 }
1585
1586 return TRUE;
1587 }
1588
1589 /*!\brief Displays GDT, LDT or IDTd.
1590 */
1591 static BOOLEAN
1592 KdbpCmdGdtLdtIdt(
1593 ULONG Argc,
1594 PCHAR Argv[])
1595 {
1596 KDESCRIPTOR Reg;
1597 ULONG SegDesc[2];
1598 ULONG SegBase;
1599 ULONG SegLimit;
1600 PCHAR SegType;
1601 USHORT SegSel;
1602 UCHAR Type, Dpl;
1603 INT i;
1604 ULONG ul;
1605
1606 if (Argv[0][0] == 'i')
1607 {
1608 /* Read IDTR */
1609 __sidt(&Reg.Limit);
1610
1611 if (Reg.Limit < 7)
1612 {
1613 KdbpPrint("Interrupt descriptor table is empty.\n");
1614 return TRUE;
1615 }
1616
1617 KdbpPrint("IDT Base: 0x%08x Limit: 0x%04x\n", Reg.Base, Reg.Limit);
1618 KdbpPrint(" Idx Type Seg. Sel. Offset DPL\n");
1619
1620 for (i = 0; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1621 {
1622 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1623 {
1624 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1625 return TRUE;
1626 }
1627
1628 Dpl = ((SegDesc[1] >> 13) & 3);
1629 if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1630 SegType = "TASKGATE";
1631 else if ((SegDesc[1] & 0x1fe0) == 0x0e00) /* 32 bit Interrupt gate */
1632 SegType = "INTGATE32";
1633 else if ((SegDesc[1] & 0x1fe0) == 0x0600) /* 16 bit Interrupt gate */
1634 SegType = "INTGATE16";
1635 else if ((SegDesc[1] & 0x1fe0) == 0x0f00) /* 32 bit Trap gate */
1636 SegType = "TRAPGATE32";
1637 else if ((SegDesc[1] & 0x1fe0) == 0x0700) /* 16 bit Trap gate */
1638 SegType = "TRAPGATE16";
1639 else
1640 SegType = "UNKNOWN";
1641
1642 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1643 {
1644 KdbpPrint(" %03d %-10s [NP] [NP] %02d\n",
1645 i / 8, SegType, Dpl);
1646 }
1647 else if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1648 {
1649 SegSel = SegDesc[0] >> 16;
1650 KdbpPrint(" %03d %-10s 0x%04x %02d\n",
1651 i / 8, SegType, SegSel, Dpl);
1652 }
1653 else
1654 {
1655 SegSel = SegDesc[0] >> 16;
1656 SegBase = (SegDesc[1] & 0xffff0000) | (SegDesc[0] & 0x0000ffff);
1657 KdbpPrint(" %03d %-10s 0x%04x 0x%08x %02d\n",
1658 i / 8, SegType, SegSel, SegBase, Dpl);
1659 }
1660 }
1661 }
1662 else
1663 {
1664 ul = 0;
1665
1666 if (Argv[0][0] == 'g')
1667 {
1668 /* Read GDTR */
1669 Ke386GetGlobalDescriptorTable(&Reg.Limit);
1670 i = 8;
1671 }
1672 else
1673 {
1674 ASSERT(Argv[0][0] == 'l');
1675
1676 /* Read LDTR */
1677 Reg.Limit = Ke386GetLocalDescriptorTable();
1678 Reg.Base = 0;
1679 i = 0;
1680 ul = 1 << 2;
1681 }
1682
1683 if (Reg.Limit < 7)
1684 {
1685 KdbpPrint("%s descriptor table is empty.\n",
1686 Argv[0][0] == 'g' ? "Global" : "Local");
1687 return TRUE;
1688 }
1689
1690 KdbpPrint("%cDT Base: 0x%08x Limit: 0x%04x\n",
1691 Argv[0][0] == 'g' ? 'G' : 'L', Reg.Base, Reg.Limit);
1692 KdbpPrint(" Idx Sel. Type Base Limit DPL Attribs\n");
1693
1694 for (; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1695 {
1696 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1697 {
1698 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1699 return TRUE;
1700 }
1701
1702 Dpl = ((SegDesc[1] >> 13) & 3);
1703 Type = ((SegDesc[1] >> 8) & 0xf);
1704
1705 SegBase = SegDesc[0] >> 16;
1706 SegBase |= (SegDesc[1] & 0xff) << 16;
1707 SegBase |= SegDesc[1] & 0xff000000;
1708 SegLimit = SegDesc[0] & 0x0000ffff;
1709 SegLimit |= (SegDesc[1] >> 16) & 0xf;
1710
1711 if ((SegDesc[1] & (1 << 23)) != 0)
1712 {
1713 SegLimit *= 4096;
1714 SegLimit += 4095;
1715 }
1716 else
1717 {
1718 SegLimit++;
1719 }
1720
1721 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1722 {
1723 switch (Type)
1724 {
1725 case 1: SegType = "TSS16(Avl)"; break;
1726 case 2: SegType = "LDT"; break;
1727 case 3: SegType = "TSS16(Busy)"; break;
1728 case 4: SegType = "CALLGATE16"; break;
1729 case 5: SegType = "TASKGATE"; break;
1730 case 6: SegType = "INTGATE16"; break;
1731 case 7: SegType = "TRAPGATE16"; break;
1732 case 9: SegType = "TSS32(Avl)"; break;
1733 case 11: SegType = "TSS32(Busy)"; break;
1734 case 12: SegType = "CALLGATE32"; break;
1735 case 14: SegType = "INTGATE32"; break;
1736 case 15: SegType = "INTGATE32"; break;
1737 default: SegType = "UNKNOWN"; break;
1738 }
1739
1740 if (!(Type >= 1 && Type <= 3) &&
1741 Type != 9 && Type != 11)
1742 {
1743 SegBase = 0;
1744 SegLimit = 0;
1745 }
1746 }
1747 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1748 {
1749 if ((SegDesc[1] & (1 << 22)) != 0)
1750 SegType = "DATA32";
1751 else
1752 SegType = "DATA16";
1753 }
1754 else /* Code segment */
1755 {
1756 if ((SegDesc[1] & (1 << 22)) != 0)
1757 SegType = "CODE32";
1758 else
1759 SegType = "CODE16";
1760 }
1761
1762 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1763 {
1764 KdbpPrint(" %03d 0x%04x %-11s [NP] [NP] %02d NP\n",
1765 i / 8, i | Dpl | ul, SegType, Dpl);
1766 }
1767 else
1768 {
1769 KdbpPrint(" %03d 0x%04x %-11s 0x%08x 0x%08x %02d ",
1770 i / 8, i | Dpl | ul, SegType, SegBase, SegLimit, Dpl);
1771
1772 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
1773 {
1774 /* FIXME: Display system segment */
1775 }
1776 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
1777 {
1778 if ((SegDesc[1] & (1 << 10)) != 0) /* Expand-down */
1779 KdbpPrint(" E");
1780
1781 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/W" : " R");
1782
1783 if ((SegDesc[1] & (1 << 8)) != 0)
1784 KdbpPrint(" A");
1785 }
1786 else /* Code segment */
1787 {
1788 if ((SegDesc[1] & (1 << 10)) != 0) /* Conforming */
1789 KdbpPrint(" C");
1790
1791 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/X" : " X");
1792
1793 if ((SegDesc[1] & (1 << 8)) != 0)
1794 KdbpPrint(" A");
1795 }
1796
1797 if ((SegDesc[1] & (1 << 20)) != 0)
1798 KdbpPrint(" AVL");
1799
1800 KdbpPrint("\n");
1801 }
1802 }
1803 }
1804
1805 return TRUE;
1806 }
1807
1808 /*!\brief Displays the KPCR
1809 */
1810 static BOOLEAN
1811 KdbpCmdPcr(
1812 ULONG Argc,
1813 PCHAR Argv[])
1814 {
1815 PKIPCR Pcr = (PKIPCR)KeGetPcr();
1816
1817 KdbpPrint("Current PCR is at 0x%08x.\n", (INT)Pcr);
1818 KdbpPrint(" Tib.ExceptionList: 0x%08x\n"
1819 " Tib.StackBase: 0x%08x\n"
1820 " Tib.StackLimit: 0x%08x\n"
1821 " Tib.SubSystemTib: 0x%08x\n"
1822 " Tib.FiberData/Version: 0x%08x\n"
1823 " Tib.ArbitraryUserPointer: 0x%08x\n"
1824 " Tib.Self: 0x%08x\n"
1825 " Self: 0x%08x\n"
1826 " PCRCB: 0x%08x\n"
1827 " Irql: 0x%02x\n"
1828 " IRR: 0x%08x\n"
1829 " IrrActive: 0x%08x\n"
1830 " IDR: 0x%08x\n"
1831 " KdVersionBlock: 0x%08x\n"
1832 " IDT: 0x%08x\n"
1833 " GDT: 0x%08x\n"
1834 " TSS: 0x%08x\n"
1835 " MajorVersion: 0x%04x\n"
1836 " MinorVersion: 0x%04x\n"
1837 " SetMember: 0x%08x\n"
1838 " StallScaleFactor: 0x%08x\n"
1839 " Number: 0x%02x\n"
1840 " L2CacheAssociativity: 0x%02x\n"
1841 " VdmAlert: 0x%08x\n"
1842 " L2CacheSize: 0x%08x\n"
1843 " InterruptMode: 0x%08x\n",
1844 Pcr->NtTib.ExceptionList, Pcr->NtTib.StackBase, Pcr->NtTib.StackLimit,
1845 Pcr->NtTib.SubSystemTib, Pcr->NtTib.FiberData, Pcr->NtTib.ArbitraryUserPointer,
1846 Pcr->NtTib.Self, Pcr->Self, Pcr->Prcb, Pcr->Irql, Pcr->IRR, Pcr->IrrActive,
1847 Pcr->IDR, Pcr->KdVersionBlock, Pcr->IDT, Pcr->GDT, Pcr->TSS,
1848 Pcr->MajorVersion, Pcr->MinorVersion, Pcr->SetMember, Pcr->StallScaleFactor,
1849 Pcr->Number, Pcr->SecondLevelCacheAssociativity,
1850 Pcr->VdmAlert, Pcr->SecondLevelCacheSize, Pcr->InterruptMode);
1851
1852 return TRUE;
1853 }
1854
1855 /*!\brief Displays the TSS
1856 */
1857 static BOOLEAN
1858 KdbpCmdTss(
1859 ULONG Argc,
1860 PCHAR Argv[])
1861 {
1862 KTSS *Tss = KeGetPcr()->TSS;
1863
1864 KdbpPrint("Current TSS is at 0x%08x.\n", (INT)Tss);
1865 KdbpPrint(" Eip: 0x%08x\n"
1866 " Es: 0x%04x\n"
1867 " Cs: 0x%04x\n"
1868 " Ss: 0x%04x\n"
1869 " Ds: 0x%04x\n"
1870 " Fs: 0x%04x\n"
1871 " Gs: 0x%04x\n"
1872 " IoMapBase: 0x%04x\n",
1873 Tss->Eip, Tss->Es, Tss->Cs, Tss->Ds, Tss->Fs, Tss->Gs, Tss->IoMapBase);
1874
1875 return TRUE;
1876 }
1877
1878 /*!\brief Bugchecks the system.
1879 */
1880 static BOOLEAN
1881 KdbpCmdBugCheck(
1882 ULONG Argc,
1883 PCHAR Argv[])
1884 {
1885 /* Set the flag and quit looping */
1886 KdbpBugCheckRequested = TRUE;
1887
1888 return FALSE;
1889 }
1890
1891 /*!\brief Sets or displays a config variables value.
1892 */
1893 static BOOLEAN
1894 KdbpCmdSet(
1895 ULONG Argc,
1896 PCHAR Argv[])
1897 {
1898 LONG l;
1899 BOOLEAN First;
1900 PCHAR pend = 0;
1901 KDB_ENTER_CONDITION ConditionFirst = KdbDoNotEnter;
1902 KDB_ENTER_CONDITION ConditionLast = KdbDoNotEnter;
1903
1904 static const PCHAR ExceptionNames[21] =
1905 {
1906 "ZERODEVIDE", "DEBUGTRAP", "NMI", "INT3", "OVERFLOW", "BOUND", "INVALIDOP",
1907 "NOMATHCOP", "DOUBLEFAULT", "RESERVED(9)", "INVALIDTSS", "SEGMENTNOTPRESENT",
1908 "STACKFAULT", "GPF", "PAGEFAULT", "RESERVED(15)", "MATHFAULT", "ALIGNMENTCHECK",
1909 "MACHINECHECK", "SIMDFAULT", "OTHERS"
1910 };
1911
1912 if (Argc == 1)
1913 {
1914 KdbpPrint("Available settings:\n");
1915 KdbpPrint(" syntax [intel|at&t]\n");
1916 KdbpPrint(" condition [exception|*] [first|last] [never|always|kmode|umode]\n");
1917 KdbpPrint(" break_on_module_load [true|false]\n");
1918 }
1919 else if (strcmp(Argv[1], "syntax") == 0)
1920 {
1921 if (Argc == 2)
1922 {
1923 KdbpPrint("syntax = %s\n", KdbUseIntelSyntax ? "intel" : "at&t");
1924 }
1925 else if (Argc >= 3)
1926 {
1927 if (_stricmp(Argv[2], "intel") == 0)
1928 KdbUseIntelSyntax = TRUE;
1929 else if (_stricmp(Argv[2], "at&t") == 0)
1930 KdbUseIntelSyntax = FALSE;
1931 else
1932 KdbpPrint("Unknown syntax '%s'.\n", Argv[2]);
1933 }
1934 }
1935 else if (strcmp(Argv[1], "condition") == 0)
1936 {
1937 if (Argc == 2)
1938 {
1939 KdbpPrint("Conditions: (First) (Last)\n");
1940 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames) - 1; l++)
1941 {
1942 if (!ExceptionNames[l])
1943 continue;
1944
1945 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
1946 ASSERT(0);
1947
1948 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
1949 ASSERT(0);
1950
1951 KdbpPrint(" #%02d %-20s %-8s %-8s\n", l, ExceptionNames[l],
1952 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1953 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1954 }
1955
1956 ASSERT(l == (RTL_NUMBER_OF(ExceptionNames) - 1));
1957 KdbpPrint(" %-20s %-8s %-8s\n", ExceptionNames[l],
1958 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
1959 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
1960 }
1961 else
1962 {
1963 if (Argc >= 5 && strcmp(Argv[2], "*") == 0) /* Allow * only when setting condition */
1964 {
1965 l = -1;
1966 }
1967 else
1968 {
1969 l = strtoul(Argv[2], &pend, 0);
1970
1971 if (Argv[2] == pend)
1972 {
1973 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames); l++)
1974 {
1975 if (!ExceptionNames[l])
1976 continue;
1977
1978 if (_stricmp(ExceptionNames[l], Argv[2]) == 0)
1979 break;
1980 }
1981 }
1982
1983 if (l >= RTL_NUMBER_OF(ExceptionNames))
1984 {
1985 KdbpPrint("Unknown exception '%s'.\n", Argv[2]);
1986 return TRUE;
1987 }
1988 }
1989
1990 if (Argc > 4)
1991 {
1992 if (_stricmp(Argv[3], "first") == 0)
1993 First = TRUE;
1994 else if (_stricmp(Argv[3], "last") == 0)
1995 First = FALSE;
1996 else
1997 {
1998 KdbpPrint("set condition: second argument must be 'first' or 'last'\n");
1999 return TRUE;
2000 }
2001
2002 if (_stricmp(Argv[4], "never") == 0)
2003 ConditionFirst = KdbDoNotEnter;
2004 else if (_stricmp(Argv[4], "always") == 0)
2005 ConditionFirst = KdbEnterAlways;
2006 else if (_stricmp(Argv[4], "umode") == 0)
2007 ConditionFirst = KdbEnterFromUmode;
2008 else if (_stricmp(Argv[4], "kmode") == 0)
2009 ConditionFirst = KdbEnterFromKmode;
2010 else
2011 {
2012 KdbpPrint("set condition: third argument must be 'never', 'always', 'umode' or 'kmode'\n");
2013 return TRUE;
2014 }
2015
2016 if (!KdbpSetEnterCondition(l, First, ConditionFirst))
2017 {
2018 if (l >= 0)
2019 KdbpPrint("Couldn't change condition for exception #%02d\n", l);
2020 else
2021 KdbpPrint("Couldn't change condition for all exceptions\n", l);
2022 }
2023 }
2024 else /* Argc >= 3 */
2025 {
2026 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
2027 ASSERT(0);
2028
2029 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
2030 ASSERT(0);
2031
2032 if (l < (RTL_NUMBER_OF(ExceptionNames) - 1))
2033 {
2034 KdbpPrint("Condition for exception #%02d (%s): FirstChance %s LastChance %s\n",
2035 l, ExceptionNames[l],
2036 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2037 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2038 }
2039 else
2040 {
2041 KdbpPrint("Condition for all other exceptions: FirstChance %s LastChance %s\n",
2042 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2043 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2044 }
2045 }
2046 }
2047 }
2048 else if (strcmp(Argv[1], "break_on_module_load") == 0)
2049 {
2050 if (Argc == 2)
2051 KdbpPrint("break_on_module_load = %s\n", KdbBreakOnModuleLoad ? "enabled" : "disabled");
2052 else if (Argc >= 3)
2053 {
2054 if (_stricmp(Argv[2], "enable") == 0 || _stricmp(Argv[2], "enabled") == 0 || _stricmp(Argv[2], "true") == 0)
2055 KdbBreakOnModuleLoad = TRUE;
2056 else if (_stricmp(Argv[2], "disable") == 0 || _stricmp(Argv[2], "disabled") == 0 || _stricmp(Argv[2], "false") == 0)
2057 KdbBreakOnModuleLoad = FALSE;
2058 else
2059 KdbpPrint("Unknown setting '%s'.\n", Argv[2]);
2060 }
2061 }
2062 else
2063 {
2064 KdbpPrint("Unknown setting '%s'.\n", Argv[1]);
2065 }
2066
2067 return TRUE;
2068 }
2069
2070 /*!\brief Displays help screen.
2071 */
2072 static BOOLEAN
2073 KdbpCmdHelp(
2074 ULONG Argc,
2075 PCHAR Argv[])
2076 {
2077 ULONG i;
2078
2079 KdbpPrint("Kernel debugger commands:\n");
2080 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2081 {
2082 if (!KdbDebuggerCommands[i].Syntax) /* Command group */
2083 {
2084 if (i > 0)
2085 KdbpPrint("\n");
2086
2087 KdbpPrint("\x1b[7m* %s:\x1b[0m\n", KdbDebuggerCommands[i].Help);
2088 continue;
2089 }
2090
2091 KdbpPrint(" %-20s - %s\n",
2092 KdbDebuggerCommands[i].Syntax,
2093 KdbDebuggerCommands[i].Help);
2094 }
2095
2096 return TRUE;
2097 }
2098
2099 /*!\brief Prints the given string with printf-like formatting.
2100 *
2101 * \param Format Format of the string/arguments.
2102 * \param ... Variable number of arguments matching the format specified in \a Format.
2103 *
2104 * \note Doesn't correctly handle \\t and terminal escape sequences when calculating the
2105 * number of lines required to print a single line from the Buffer in the terminal.
2106 */
2107 VOID
2108 KdbpPrint(
2109 IN PCHAR Format,
2110 IN ... OPTIONAL)
2111 {
2112 static CHAR Buffer[4096];
2113 static BOOLEAN TerminalInitialized = FALSE;
2114 static BOOLEAN TerminalConnected = FALSE;
2115 static BOOLEAN TerminalReportsSize = TRUE;
2116 CHAR c = '\0';
2117 PCHAR p, p2;
2118 ULONG Length;
2119 ULONG i, j;
2120 LONG RowsPrintedByTerminal;
2121 ULONG ScanCode;
2122 va_list ap;
2123
2124 /* Check if the user has aborted output of the current command */
2125 if (KdbOutputAborted)
2126 return;
2127
2128 /* Initialize the terminal */
2129 if (!TerminalInitialized)
2130 {
2131 DbgPrint("\x1b[7h"); /* Enable linewrap */
2132
2133 /* Query terminal type */
2134 /*DbgPrint("\x1b[Z");*/
2135 DbgPrint("\x05");
2136
2137 TerminalInitialized = TRUE;
2138 Length = 0;
2139 KeStallExecutionProcessor(100000);
2140
2141 for (;;)
2142 {
2143 c = KdbpTryGetCharSerial(5000);
2144 if (c == -1)
2145 break;
2146
2147 Buffer[Length++] = c;
2148 if (Length >= (sizeof (Buffer) - 1))
2149 break;
2150 }
2151
2152 Buffer[Length] = '\0';
2153 if (Length > 0)
2154 TerminalConnected = TRUE;
2155 }
2156
2157 /* Get number of rows and columns in terminal */
2158 if ((KdbNumberOfRowsTerminal < 0) || (KdbNumberOfColsTerminal < 0) ||
2159 (KdbNumberOfRowsPrinted) == 0) /* Refresh terminal size each time when number of rows printed is 0 */
2160 {
2161 if ((KdbDebugState & KD_DEBUG_KDSERIAL) && TerminalConnected && TerminalReportsSize)
2162 {
2163 /* Try to query number of rows from terminal. A reply looks like "\x1b[8;24;80t" */
2164 TerminalReportsSize = FALSE;
2165 KeStallExecutionProcessor(100000);
2166 DbgPrint("\x1b[18t");
2167 c = KdbpTryGetCharSerial(5000);
2168
2169 if (c == KEY_ESC)
2170 {
2171 c = KdbpTryGetCharSerial(5000);
2172 if (c == '[')
2173 {
2174 Length = 0;
2175
2176 for (;;)
2177 {
2178 c = KdbpTryGetCharSerial(5000);
2179 if (c == -1)
2180 break;
2181
2182 Buffer[Length++] = c;
2183 if (isalpha(c) || Length >= (sizeof (Buffer) - 1))
2184 break;
2185 }
2186
2187 Buffer[Length] = '\0';
2188 if (Buffer[0] == '8' && Buffer[1] == ';')
2189 {
2190 for (i = 2; (i < Length) && (Buffer[i] != ';'); i++);
2191
2192 if (Buffer[i] == ';')
2193 {
2194 Buffer[i++] = '\0';
2195
2196 /* Number of rows is now at Buffer + 2 and number of cols at Buffer + i */
2197 KdbNumberOfRowsTerminal = strtoul(Buffer + 2, NULL, 0);
2198 KdbNumberOfColsTerminal = strtoul(Buffer + i, NULL, 0);
2199 TerminalReportsSize = TRUE;
2200 }
2201 }
2202 }
2203 /* Clear further characters */
2204 while ((c = KdbpTryGetCharSerial(5000)) != -1);
2205 }
2206 }
2207
2208 if (KdbNumberOfRowsTerminal <= 0)
2209 {
2210 /* Set number of rows to the default. */
2211 KdbNumberOfRowsTerminal = 24;
2212 }
2213 else if (KdbNumberOfColsTerminal <= 0)
2214 {
2215 /* Set number of cols to the default. */
2216 KdbNumberOfColsTerminal = 80;
2217 }
2218 }
2219
2220 /* Get the string */
2221 va_start(ap, Format);
2222 Length = _vsnprintf(Buffer, sizeof (Buffer) - 1, Format, ap);
2223 Buffer[Length] = '\0';
2224 va_end(ap);
2225
2226 p = Buffer;
2227 while (p[0] != '\0')
2228 {
2229 i = strcspn(p, "\n");
2230
2231 /* Calculate the number of lines which will be printed in the terminal
2232 * when outputting the current line
2233 */
2234 if (i > 0)
2235 RowsPrintedByTerminal = (i + KdbNumberOfColsPrinted - 1) / KdbNumberOfColsTerminal;
2236 else
2237 RowsPrintedByTerminal = 0;
2238
2239 if (p[i] == '\n')
2240 RowsPrintedByTerminal++;
2241
2242 /*DbgPrint("!%d!%d!%d!%d!", KdbNumberOfRowsPrinted, KdbNumberOfColsPrinted, i, RowsPrintedByTerminal);*/
2243
2244 /* Display a prompt if we printed one screen full of text */
2245 if (KdbNumberOfRowsTerminal > 0 &&
2246 (LONG)(KdbNumberOfRowsPrinted + RowsPrintedByTerminal) >= KdbNumberOfRowsTerminal)
2247 {
2248 if (KdbNumberOfColsPrinted > 0)
2249 DbgPrint("\n");
2250
2251 DbgPrint("--- Press q to abort, any other key to continue ---");
2252
2253 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2254 c = KdbpGetCharSerial();
2255 else
2256 c = KdbpGetCharKeyboard(&ScanCode);
2257
2258 if (c == '\r')
2259 {
2260 /* Try to read '\n' which might follow '\r' - if \n is not received here
2261 * it will be interpreted as "return" when the next command should be read.
2262 */
2263 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2264 c = KdbpTryGetCharSerial(5);
2265 else
2266 c = KdbpTryGetCharKeyboard(&ScanCode, 5);
2267 }
2268
2269 DbgPrint("\n");
2270 if (c == 'q')
2271 {
2272 KdbOutputAborted = TRUE;
2273 return;
2274 }
2275
2276 KdbNumberOfRowsPrinted = 0;
2277 KdbNumberOfColsPrinted = 0;
2278 }
2279
2280 /* Insert a NUL after the line and print only the current line. */
2281 if (p[i] == '\n' && p[i + 1] != '\0')
2282 {
2283 c = p[i + 1];
2284 p[i + 1] = '\0';
2285 }
2286 else
2287 {
2288 c = '\0';
2289 }
2290
2291 /* Remove escape sequences from the line if there's no terminal connected */
2292 if (!TerminalConnected)
2293 {
2294 while ((p2 = strrchr(p, '\x1b'))) /* Look for escape character */
2295 {
2296 if (p2[1] == '[')
2297 {
2298 j = 2;
2299 while (!isalpha(p2[j++]));
2300 strcpy(p2, p2 + j);
2301 }
2302 else
2303 {
2304 strcpy(p2, p2 + 1);
2305 }
2306 }
2307 }
2308
2309 DbgPrint("%s", p);
2310
2311 if (c != '\0')
2312 p[i + 1] = c;
2313
2314 /* Set p to the start of the next line and
2315 * remember the number of rows/cols printed
2316 */
2317 p += i;
2318 if (p[0] == '\n')
2319 {
2320 p++;
2321 KdbNumberOfColsPrinted = 0;
2322 }
2323 else
2324 {
2325 ASSERT(p[0] == '\0');
2326 KdbNumberOfColsPrinted += i;
2327 }
2328
2329 KdbNumberOfRowsPrinted += RowsPrintedByTerminal;
2330 }
2331 }
2332
2333 /*!\brief Appends a command to the command history
2334 *
2335 * \param Command Pointer to the command to append to the history.
2336 */
2337 static VOID
2338 KdbpCommandHistoryAppend(
2339 IN PCHAR Command)
2340 {
2341 ULONG Length1 = strlen(Command) + 1;
2342 ULONG Length2 = 0;
2343 INT i;
2344 PCHAR Buffer;
2345
2346 ASSERT(Length1 <= RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2347
2348 if (Length1 <= 1 ||
2349 (KdbCommandHistory[KdbCommandHistoryIndex] &&
2350 strcmp(KdbCommandHistory[KdbCommandHistoryIndex], Command) == 0))
2351 {
2352 return;
2353 }
2354
2355 /* Calculate Length1 and Length2 */
2356 Buffer = KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex;
2357 KdbCommandHistoryBufferIndex += Length1;
2358 if (KdbCommandHistoryBufferIndex >= (LONG)RTL_NUMBER_OF(KdbCommandHistoryBuffer))
2359 {
2360 KdbCommandHistoryBufferIndex -= RTL_NUMBER_OF(KdbCommandHistoryBuffer);
2361 Length2 = KdbCommandHistoryBufferIndex;
2362 Length1 -= Length2;
2363 }
2364
2365 /* Remove previous commands until there is enough space to append the new command */
2366 for (i = KdbCommandHistoryIndex; KdbCommandHistory[i];)
2367 {
2368 if ((Length2 > 0 &&
2369 (KdbCommandHistory[i] >= Buffer ||
2370 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))) ||
2371 (Length2 <= 0 &&
2372 (KdbCommandHistory[i] >= Buffer &&
2373 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))))
2374 {
2375 KdbCommandHistory[i] = NULL;
2376 }
2377
2378 i--;
2379 if (i < 0)
2380 i = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2381
2382 if (i == KdbCommandHistoryIndex)
2383 break;
2384 }
2385
2386 /* Make sure the new command history entry is free */
2387 KdbCommandHistoryIndex++;
2388 KdbCommandHistoryIndex %= RTL_NUMBER_OF(KdbCommandHistory);
2389 if (KdbCommandHistory[KdbCommandHistoryIndex])
2390 {
2391 KdbCommandHistory[KdbCommandHistoryIndex] = NULL;
2392 }
2393
2394 /* Append command */
2395 KdbCommandHistory[KdbCommandHistoryIndex] = Buffer;
2396 ASSERT((KdbCommandHistory[KdbCommandHistoryIndex] + Length1) <= KdbCommandHistoryBuffer + RTL_NUMBER_OF(KdbCommandHistoryBuffer));
2397 memcpy(KdbCommandHistory[KdbCommandHistoryIndex], Command, Length1);
2398 if (Length2 > 0)
2399 {
2400 memcpy(KdbCommandHistoryBuffer, Command + Length1, Length2);
2401 }
2402 }
2403
2404 /*!\brief Reads a line of user-input.
2405 *
2406 * \param Buffer Buffer to store the input into. Trailing newlines are removed.
2407 * \param Size Size of \a Buffer.
2408 *
2409 * \note Accepts only \n newlines, \r is ignored.
2410 */
2411 static VOID
2412 KdbpReadCommand(
2413 OUT PCHAR Buffer,
2414 IN ULONG Size)
2415 {
2416 CHAR Key;
2417 PCHAR Orig = Buffer;
2418 ULONG ScanCode = 0;
2419 BOOLEAN EchoOn;
2420 static CHAR LastCommand[1024] = "";
2421 static CHAR NextKey = '\0';
2422 INT CmdHistIndex = -1;
2423 INT i;
2424
2425 EchoOn = !((KdbDebugState & KD_DEBUG_KDNOECHO) != 0);
2426
2427 for (;;)
2428 {
2429 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2430 {
2431 Key = (NextKey == '\0') ? KdbpGetCharSerial() : NextKey;
2432 NextKey = '\0';
2433 ScanCode = 0;
2434 if (Key == KEY_ESC) /* ESC */
2435 {
2436 Key = KdbpGetCharSerial();
2437 if (Key == '[')
2438 {
2439 Key = KdbpGetCharSerial();
2440
2441 switch (Key)
2442 {
2443 case 'A':
2444 ScanCode = KEY_SCAN_UP;
2445 break;
2446 case 'B':
2447 ScanCode = KEY_SCAN_DOWN;
2448 break;
2449 case 'C':
2450 break;
2451 case 'D':
2452 break;
2453 }
2454 }
2455 }
2456 }
2457 else
2458 {
2459 ScanCode = 0;
2460 Key = (NextKey == '\0') ? KdbpGetCharKeyboard(&ScanCode) : NextKey;
2461 NextKey = '\0';
2462 }
2463
2464 if ((ULONG)(Buffer - Orig) >= (Size - 1))
2465 {
2466 /* Buffer is full, accept only newlines */
2467 if (Key != '\n')
2468 continue;
2469 }
2470
2471 if (Key == '\r')
2472 {
2473 /* Read the next char - this is to throw away a \n which most clients should
2474 * send after \r.
2475 */
2476 KeStallExecutionProcessor(100000);
2477
2478 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2479 NextKey = KdbpTryGetCharSerial(5);
2480 else
2481 NextKey = KdbpTryGetCharKeyboard(&ScanCode, 5);
2482
2483 if (NextKey == '\n' || NextKey == -1) /* \n or no response at all */
2484 NextKey = '\0';
2485
2486 KdbpPrint("\n");
2487
2488 /*
2489 * Repeat the last command if the user presses enter. Reduces the
2490 * risk of RSI when single-stepping.
2491 */
2492 if (Buffer == Orig)
2493 {
2494 strncpy(Buffer, LastCommand, Size);
2495 Buffer[Size - 1] = '\0';
2496 }
2497 else
2498 {
2499 *Buffer = '\0';
2500 strncpy(LastCommand, Orig, sizeof (LastCommand));
2501 LastCommand[sizeof (LastCommand) - 1] = '\0';
2502 }
2503
2504 return;
2505 }
2506 else if (Key == KEY_BS || Key == KEY_DEL)
2507 {
2508 if (Buffer > Orig)
2509 {
2510 Buffer--;
2511 *Buffer = 0;
2512
2513 if (EchoOn)
2514 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2515 else
2516 KdbpPrint(" %c", KEY_BS);
2517 }
2518 }
2519 else if (ScanCode == KEY_SCAN_UP)
2520 {
2521 BOOLEAN Print = TRUE;
2522
2523 if (CmdHistIndex < 0)
2524 {
2525 CmdHistIndex = KdbCommandHistoryIndex;
2526 }
2527 else
2528 {
2529 i = CmdHistIndex - 1;
2530
2531 if (i < 0)
2532 CmdHistIndex = RTL_NUMBER_OF(KdbCommandHistory) - 1;
2533
2534 if (KdbCommandHistory[i] && i != KdbCommandHistoryIndex)
2535 CmdHistIndex = i;
2536 else
2537 Print = FALSE;
2538 }
2539
2540 if (Print && KdbCommandHistory[CmdHistIndex])
2541 {
2542 while (Buffer > Orig)
2543 {
2544 Buffer--;
2545 *Buffer = 0;
2546
2547 if (EchoOn)
2548 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2549 else
2550 KdbpPrint(" %c", KEY_BS);
2551 }
2552
2553 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2554 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2555 Orig[i] = '\0';
2556 Buffer = Orig + i;
2557 KdbpPrint("%s", Orig);
2558 }
2559 }
2560 else if (ScanCode == KEY_SCAN_DOWN)
2561 {
2562 if (CmdHistIndex > 0 && CmdHistIndex != KdbCommandHistoryIndex)
2563 {
2564 i = CmdHistIndex + 1;
2565 if (i >= (INT)RTL_NUMBER_OF(KdbCommandHistory))
2566 i = 0;
2567
2568 if (KdbCommandHistory[i])
2569 {
2570 CmdHistIndex = i;
2571 while (Buffer > Orig)
2572 {
2573 Buffer--;
2574 *Buffer = 0;
2575
2576 if (EchoOn)
2577 KdbpPrint("%c %c", KEY_BS, KEY_BS);
2578 else
2579 KdbpPrint(" %c", KEY_BS);
2580 }
2581
2582 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
2583 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
2584 Orig[i] = '\0';
2585 Buffer = Orig + i;
2586 KdbpPrint("%s", Orig);
2587 }
2588 }
2589 }
2590 else
2591 {
2592 if (EchoOn)
2593 KdbpPrint("%c", Key);
2594
2595 *Buffer = Key;
2596 Buffer++;
2597 }
2598 }
2599 }
2600
2601 /*!\brief Parses command line and executes command if found
2602 *
2603 * \param Command Command line to parse and execute if possible.
2604 *
2605 * \retval TRUE Don't continue execution.
2606 * \retval FALSE Continue execution (leave KDB)
2607 */
2608 static BOOLEAN
2609 KdbpDoCommand(
2610 IN PCHAR Command)
2611 {
2612 ULONG i;
2613 PCHAR p;
2614 ULONG Argc;
2615 static PCH Argv[256];
2616 static CHAR OrigCommand[1024];
2617
2618 strncpy(OrigCommand, Command, sizeof(OrigCommand) - 1);
2619 OrigCommand[sizeof(OrigCommand) - 1] = '\0';
2620
2621 Argc = 0;
2622 p = Command;
2623
2624 for (;;)
2625 {
2626 while (*p == '\t' || *p == ' ')
2627 p++;
2628
2629 if (*p == '\0')
2630 break;
2631
2632 i = strcspn(p, "\t ");
2633 Argv[Argc++] = p;
2634 p += i;
2635 if (*p == '\0')
2636 break;
2637
2638 *p = '\0';
2639 p++;
2640 }
2641
2642 if (Argc < 1)
2643 return TRUE;
2644
2645 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2646 {
2647 if (!KdbDebuggerCommands[i].Name)
2648 continue;
2649
2650 if (strcmp(KdbDebuggerCommands[i].Name, Argv[0]) == 0)
2651 {
2652 return KdbDebuggerCommands[i].Fn(Argc, Argv);
2653 }
2654 }
2655
2656 KdbpPrint("Command '%s' is unknown.\n", OrigCommand);
2657 return TRUE;
2658 }
2659
2660 /*!\brief KDB Main Loop.
2661 *
2662 * \param EnteredOnSingleStep TRUE if KDB was entered on single step.
2663 */
2664 VOID
2665 KdbpCliMainLoop(
2666 IN BOOLEAN EnteredOnSingleStep)
2667 {
2668 static CHAR Command[1024];
2669 BOOLEAN Continue;
2670
2671 if (EnteredOnSingleStep)
2672 {
2673 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip))
2674 {
2675 KdbpPrint("<%x>", KdbCurrentTrapFrame->Tf.Eip);
2676 }
2677
2678 KdbpPrint(": ");
2679 if (KdbpDisassemble(KdbCurrentTrapFrame->Tf.Eip, KdbUseIntelSyntax) < 0)
2680 {
2681 KdbpPrint("<INVALID>");
2682 }
2683 KdbpPrint("\n");
2684 }
2685
2686 /* Flush the input buffer */
2687 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2688 {
2689 while (KdbpTryGetCharSerial(1) != -1);
2690 }
2691 else
2692 {
2693 ULONG ScanCode;
2694 while (KdbpTryGetCharKeyboard(&ScanCode, 1) != -1);
2695 }
2696
2697 /* Main loop */
2698 do
2699 {
2700 /* Print the prompt */
2701 KdbpPrint("kdb:> ");
2702
2703 /* Read a command and remember it */
2704 KdbpReadCommand(Command, sizeof (Command));
2705 KdbpCommandHistoryAppend(Command);
2706
2707 /* Reset the number of rows/cols printed and output aborted state */
2708 KdbNumberOfRowsPrinted = KdbNumberOfColsPrinted = 0;
2709 KdbOutputAborted = FALSE;
2710
2711 /* Call the command */
2712 Continue = KdbpDoCommand(Command);
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 }
A free Windows-compatible Operating System