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[NTOSKRNL] Reimplement !irpfind using !poolfind helpers
[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/kdbg/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 /* Scan codes of keyboard keys: */
46 #define KEYSC_END 0x004f
47 #define KEYSC_PAGEUP 0x0049
48 #define KEYSC_PAGEDOWN 0x0051
49 #define KEYSC_HOME 0x0047
50 #define KEYSC_ARROWUP 0x0048
51
52 #define KDB_ENTER_CONDITION_TO_STRING(cond) \
53 ((cond) == KdbDoNotEnter ? "never" : \
54 ((cond) == KdbEnterAlways ? "always" : \
55 ((cond) == KdbEnterFromKmode ? "kmode" : "umode")))
56
57 #define KDB_ACCESS_TYPE_TO_STRING(type) \
58 ((type) == KdbAccessRead ? "read" : \
59 ((type) == KdbAccessWrite ? "write" : \
60 ((type) == KdbAccessReadWrite ? "rdwr" : "exec")))
61
62 #define NPX_STATE_TO_STRING(state) \
63 ((state) == NPX_STATE_LOADED ? "Loaded" : \
64 ((state) == NPX_STATE_NOT_LOADED ? "Not loaded" : "Unknown"))
65
66 /* PROTOTYPES ****************************************************************/
67
68 static BOOLEAN KdbpCmdEvalExpression(ULONG Argc, PCHAR Argv[]);
69 static BOOLEAN KdbpCmdDisassembleX(ULONG Argc, PCHAR Argv[]);
70 static BOOLEAN KdbpCmdRegs(ULONG Argc, PCHAR Argv[]);
71 static BOOLEAN KdbpCmdBackTrace(ULONG Argc, PCHAR Argv[]);
72
73 static BOOLEAN KdbpCmdContinue(ULONG Argc, PCHAR Argv[]);
74 static BOOLEAN KdbpCmdStep(ULONG Argc, PCHAR Argv[]);
75 static BOOLEAN KdbpCmdBreakPointList(ULONG Argc, PCHAR Argv[]);
76 static BOOLEAN KdbpCmdEnableDisableClearBreakPoint(ULONG Argc, PCHAR Argv[]);
77 static BOOLEAN KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[]);
78
79 static BOOLEAN KdbpCmdThread(ULONG Argc, PCHAR Argv[]);
80 static BOOLEAN KdbpCmdProc(ULONG Argc, PCHAR Argv[]);
81
82 static BOOLEAN KdbpCmdMod(ULONG Argc, PCHAR Argv[]);
83 static BOOLEAN KdbpCmdGdtLdtIdt(ULONG Argc, PCHAR Argv[]);
84 static BOOLEAN KdbpCmdPcr(ULONG Argc, PCHAR Argv[]);
85 static BOOLEAN KdbpCmdTss(ULONG Argc, PCHAR Argv[]);
86
87 static BOOLEAN KdbpCmdBugCheck(ULONG Argc, PCHAR Argv[]);
88 static BOOLEAN KdbpCmdReboot(ULONG Argc, PCHAR Argv[]);
89 static BOOLEAN KdbpCmdFilter(ULONG Argc, PCHAR Argv[]);
90 static BOOLEAN KdbpCmdSet(ULONG Argc, PCHAR Argv[]);
91 static BOOLEAN KdbpCmdHelp(ULONG Argc, PCHAR Argv[]);
92 static BOOLEAN KdbpCmdDmesg(ULONG Argc, PCHAR Argv[]);
93
94 BOOLEAN ExpKdbgExtPool(ULONG Argc, PCHAR Argv[]);
95 BOOLEAN ExpKdbgExtPoolUsed(ULONG Argc, PCHAR Argv[]);
96 BOOLEAN ExpKdbgExtPoolFind(ULONG Argc, PCHAR Argv[]);
97 BOOLEAN ExpKdbgExtFileCache(ULONG Argc, PCHAR Argv[]);
98 BOOLEAN ExpKdbgExtDefWrites(ULONG Argc, PCHAR Argv[]);
99 BOOLEAN ExpKdbgExtIrpFind(ULONG Argc, PCHAR Argv[]);
100
101 #ifdef __ROS_DWARF__
102 static BOOLEAN KdbpCmdPrintStruct(ULONG Argc, PCHAR Argv[]);
103 #endif
104
105 /* GLOBALS *******************************************************************/
106
107 static PKDBG_CLI_ROUTINE KdbCliCallbacks[10];
108 static BOOLEAN KdbUseIntelSyntax = FALSE; /* Set to TRUE for intel syntax */
109 static BOOLEAN KdbBreakOnModuleLoad = FALSE; /* Set to TRUE to break into KDB when a module is loaded */
110
111 static CHAR KdbCommandHistoryBuffer[2048]; /* Command history string ringbuffer */
112 static PCHAR KdbCommandHistory[sizeof(KdbCommandHistoryBuffer) / 8] = { NULL }; /* Command history ringbuffer */
113 static LONG KdbCommandHistoryBufferIndex = 0;
114 static LONG KdbCommandHistoryIndex = 0;
115
116 static ULONG KdbNumberOfRowsPrinted = 0;
117 static ULONG KdbNumberOfColsPrinted = 0;
118 static BOOLEAN KdbOutputAborted = FALSE;
119 static BOOLEAN KdbRepeatLastCommand = FALSE;
120 static LONG KdbNumberOfRowsTerminal = -1;
121 static LONG KdbNumberOfColsTerminal = -1;
122
123 PCHAR KdbInitFileBuffer = NULL; /* Buffer where KDBinit file is loaded into during initialization */
124 BOOLEAN KdbpBugCheckRequested = FALSE;
125
126 /* Vars for dmesg */
127 /* defined in ../kd/kdio.c, declare here: */
128 extern volatile BOOLEAN KdbpIsInDmesgMode;
129 extern const ULONG KdpDmesgBufferSize;
130 extern PCHAR KdpDmesgBuffer;
131 extern volatile ULONG KdpDmesgCurrentPosition;
132 extern volatile ULONG KdpDmesgFreeBytes;
133 extern volatile ULONG KdbDmesgTotalWritten;
134
135 static const struct
136 {
137 PCHAR Name;
138 PCHAR Syntax;
139 PCHAR Help;
140 BOOLEAN (*Fn)(ULONG Argc, PCHAR Argv[]);
141 } KdbDebuggerCommands[] = {
142 /* Data */
143 { NULL, NULL, "Data", NULL },
144 { "?", "? expression", "Evaluate expression.", KdbpCmdEvalExpression },
145 { "disasm", "disasm [address] [L count]", "Disassemble count instructions at address.", KdbpCmdDisassembleX },
146 { "x", "x [address] [L count]", "Display count dwords, starting at addr.", KdbpCmdDisassembleX },
147 { "regs", "regs", "Display general purpose registers.", KdbpCmdRegs },
148 { "cregs", "cregs", "Display control registers.", KdbpCmdRegs },
149 { "sregs", "sregs", "Display status registers.", KdbpCmdRegs },
150 { "dregs", "dregs", "Display debug registers.", KdbpCmdRegs },
151 { "bt", "bt [*frameaddr|thread id]", "Prints current backtrace or from given frame addr", KdbpCmdBackTrace },
152 #ifdef __ROS_DWARF__
153 { "dt", "dt [mod] [type] [addr]", "Print a struct. Addr is optional.", KdbpCmdPrintStruct },
154 #endif
155
156 /* Flow control */
157 { NULL, NULL, "Flow control", NULL },
158 { "cont", "cont", "Continue execution (leave debugger)", KdbpCmdContinue },
159 { "step", "step [count]", "Execute single instructions, stepping into interrupts.", KdbpCmdStep },
160 { "next", "next [count]", "Execute single instructions, skipping calls and reps.", KdbpCmdStep },
161 { "bl", "bl", "List breakpoints.", KdbpCmdBreakPointList },
162 { "be", "be [breakpoint]", "Enable breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
163 { "bd", "bd [breakpoint]", "Disable breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
164 { "bc", "bc [breakpoint]", "Clear breakpoint.", KdbpCmdEnableDisableClearBreakPoint },
165 { "bpx", "bpx [address] [IF condition]", "Set software execution breakpoint at address.", KdbpCmdBreakPoint },
166 { "bpm", "bpm [r|w|rw|x] [byte|word|dword] [address] [IF condition]", "Set memory breakpoint at address.", KdbpCmdBreakPoint },
167
168 /* Process/Thread */
169 { NULL, NULL, "Process/Thread", NULL },
170 { "thread", "thread [list[ pid]|[attach ]tid]", "List threads in current or specified process, display thread with given id or attach to thread.", KdbpCmdThread },
171 { "proc", "proc [list|[attach ]pid]", "List processes, display process with given id or attach to process.", KdbpCmdProc },
172
173 /* System information */
174 { NULL, NULL, "System info", NULL },
175 { "mod", "mod [address]", "List all modules or the one containing address.", KdbpCmdMod },
176 { "gdt", "gdt", "Display global descriptor table.", KdbpCmdGdtLdtIdt },
177 { "ldt", "ldt", "Display local descriptor table.", KdbpCmdGdtLdtIdt },
178 { "idt", "idt", "Display interrupt descriptor table.", KdbpCmdGdtLdtIdt },
179 { "pcr", "pcr", "Display processor control region.", KdbpCmdPcr },
180 { "tss", "tss", "Display task state segment.", KdbpCmdTss },
181
182 /* Others */
183 { NULL, NULL, "Others", NULL },
184 { "bugcheck", "bugcheck", "Bugchecks the system.", KdbpCmdBugCheck },
185 { "reboot", "reboot", "Reboots the system.", KdbpCmdReboot},
186 { "filter", "filter [error|warning|trace|info|level]+|-[componentname|default]", "Enable/disable debug channels", KdbpCmdFilter },
187 { "set", "set [var] [value]", "Sets var to value or displays value of var.", KdbpCmdSet },
188 { "dmesg", "dmesg", "Display debug messages on screen, with navigation on pages.", KdbpCmdDmesg },
189 { "kmsg", "kmsg", "Kernel dmesg. Alias for dmesg.", KdbpCmdDmesg },
190 { "help", "help", "Display help screen.", KdbpCmdHelp },
191 { "!pool", "!pool [Address [Flags]]", "Display information about pool allocations.", ExpKdbgExtPool },
192 { "!poolused", "!poolused [Flags [Tag]]", "Display pool usage.", ExpKdbgExtPoolUsed },
193 { "!poolfind", "!poolfind Tag [Pool]", "Search for pool tag allocations.", ExpKdbgExtPoolFind },
194 { "!filecache", "!filecache", "Display cache usage.", ExpKdbgExtFileCache },
195 { "!defwrites", "!defwrites", "Display cache write values.", ExpKdbgExtDefWrites },
196 { "!irpfind", "!irpfind [Pool [Restart Address [criteria data]]]", "Lists IRPs potentially matching criteria", ExpKdbgExtIrpFind },
197 };
198
199 /* FUNCTIONS *****************************************************************/
200
201 /*!\brief Transform a component name to an integer
202 *
203 * \param ComponentName The name of the component.
204 * \param ComponentId Receives the component id on success.
205 *
206 * \retval TRUE Success.
207 * \retval FALSE Failure.
208 */
209 static BOOLEAN
210 KdbpGetComponentId(
211 IN PCCH ComponentName,
212 OUT PULONG ComponentId)
213 {
214 ULONG i;
215
216 static struct
217 {
218 PCCH Name;
219 ULONG Id;
220 }
221 ComponentTable[] =
222 {
223 { "DEFAULT", MAXULONG },
224 { "SYSTEM", DPFLTR_SYSTEM_ID },
225 { "SMSS", DPFLTR_SMSS_ID },
226 { "SETUP", DPFLTR_SETUP_ID },
227 { "NTFS", DPFLTR_NTFS_ID },
228 { "FSTUB", DPFLTR_FSTUB_ID },
229 { "CRASHDUMP", DPFLTR_CRASHDUMP_ID },
230 { "CDAUDIO", DPFLTR_CDAUDIO_ID },
231 { "CDROM", DPFLTR_CDROM_ID },
232 { "CLASSPNP", DPFLTR_CLASSPNP_ID },
233 { "DISK", DPFLTR_DISK_ID },
234 { "REDBOOK", DPFLTR_REDBOOK_ID },
235 { "STORPROP", DPFLTR_STORPROP_ID },
236 { "SCSIPORT", DPFLTR_SCSIPORT_ID },
237 { "SCSIMINIPORT", DPFLTR_SCSIMINIPORT_ID },
238 { "CONFIG", DPFLTR_CONFIG_ID },
239 { "I8042PRT", DPFLTR_I8042PRT_ID },
240 { "SERMOUSE", DPFLTR_SERMOUSE_ID },
241 { "LSERMOUS", DPFLTR_LSERMOUS_ID },
242 { "KBDHID", DPFLTR_KBDHID_ID },
243 { "MOUHID", DPFLTR_MOUHID_ID },
244 { "KBDCLASS", DPFLTR_KBDCLASS_ID },
245 { "MOUCLASS", DPFLTR_MOUCLASS_ID },
246 { "TWOTRACK", DPFLTR_TWOTRACK_ID },
247 { "WMILIB", DPFLTR_WMILIB_ID },
248 { "ACPI", DPFLTR_ACPI_ID },
249 { "AMLI", DPFLTR_AMLI_ID },
250 { "HALIA64", DPFLTR_HALIA64_ID },
251 { "VIDEO", DPFLTR_VIDEO_ID },
252 { "SVCHOST", DPFLTR_SVCHOST_ID },
253 { "VIDEOPRT", DPFLTR_VIDEOPRT_ID },
254 { "TCPIP", DPFLTR_TCPIP_ID },
255 { "DMSYNTH", DPFLTR_DMSYNTH_ID },
256 { "NTOSPNP", DPFLTR_NTOSPNP_ID },
257 { "FASTFAT", DPFLTR_FASTFAT_ID },
258 { "SAMSS", DPFLTR_SAMSS_ID },
259 { "PNPMGR", DPFLTR_PNPMGR_ID },
260 { "NETAPI", DPFLTR_NETAPI_ID },
261 { "SCSERVER", DPFLTR_SCSERVER_ID },
262 { "SCCLIENT", DPFLTR_SCCLIENT_ID },
263 { "SERIAL", DPFLTR_SERIAL_ID },
264 { "SERENUM", DPFLTR_SERENUM_ID },
265 { "UHCD", DPFLTR_UHCD_ID },
266 { "RPCPROXY", DPFLTR_RPCPROXY_ID },
267 { "AUTOCHK", DPFLTR_AUTOCHK_ID },
268 { "DCOMSS", DPFLTR_DCOMSS_ID },
269 { "UNIMODEM", DPFLTR_UNIMODEM_ID },
270 { "SIS", DPFLTR_SIS_ID },
271 { "FLTMGR", DPFLTR_FLTMGR_ID },
272 { "WMICORE", DPFLTR_WMICORE_ID },
273 { "BURNENG", DPFLTR_BURNENG_ID },
274 { "IMAPI", DPFLTR_IMAPI_ID },
275 { "SXS", DPFLTR_SXS_ID },
276 { "FUSION", DPFLTR_FUSION_ID },
277 { "IDLETASK", DPFLTR_IDLETASK_ID },
278 { "SOFTPCI", DPFLTR_SOFTPCI_ID },
279 { "TAPE", DPFLTR_TAPE_ID },
280 { "MCHGR", DPFLTR_MCHGR_ID },
281 { "IDEP", DPFLTR_IDEP_ID },
282 { "PCIIDE", DPFLTR_PCIIDE_ID },
283 { "FLOPPY", DPFLTR_FLOPPY_ID },
284 { "FDC", DPFLTR_FDC_ID },
285 { "TERMSRV", DPFLTR_TERMSRV_ID },
286 { "W32TIME", DPFLTR_W32TIME_ID },
287 { "PREFETCHER", DPFLTR_PREFETCHER_ID },
288 { "RSFILTER", DPFLTR_RSFILTER_ID },
289 { "FCPORT", DPFLTR_FCPORT_ID },
290 { "PCI", DPFLTR_PCI_ID },
291 { "DMIO", DPFLTR_DMIO_ID },
292 { "DMCONFIG", DPFLTR_DMCONFIG_ID },
293 { "DMADMIN", DPFLTR_DMADMIN_ID },
294 { "WSOCKTRANSPORT", DPFLTR_WSOCKTRANSPORT_ID },
295 { "VSS", DPFLTR_VSS_ID },
296 { "PNPMEM", DPFLTR_PNPMEM_ID },
297 { "PROCESSOR", DPFLTR_PROCESSOR_ID },
298 { "DMSERVER", DPFLTR_DMSERVER_ID },
299 { "SR", DPFLTR_SR_ID },
300 { "INFINIBAND", DPFLTR_INFINIBAND_ID },
301 { "IHVDRIVER", DPFLTR_IHVDRIVER_ID },
302 { "IHVVIDEO", DPFLTR_IHVVIDEO_ID },
303 { "IHVAUDIO", DPFLTR_IHVAUDIO_ID },
304 { "IHVNETWORK", DPFLTR_IHVNETWORK_ID },
305 { "IHVSTREAMING", DPFLTR_IHVSTREAMING_ID },
306 { "IHVBUS", DPFLTR_IHVBUS_ID },
307 { "HPS", DPFLTR_HPS_ID },
308 { "RTLTHREADPOOL", DPFLTR_RTLTHREADPOOL_ID },
309 { "LDR", DPFLTR_LDR_ID },
310 { "TCPIP6", DPFLTR_TCPIP6_ID },
311 { "ISAPNP", DPFLTR_ISAPNP_ID },
312 { "SHPC", DPFLTR_SHPC_ID },
313 { "STORPORT", DPFLTR_STORPORT_ID },
314 { "STORMINIPORT", DPFLTR_STORMINIPORT_ID },
315 { "PRINTSPOOLER", DPFLTR_PRINTSPOOLER_ID },
316 { "VSSDYNDISK", DPFLTR_VSSDYNDISK_ID },
317 { "VERIFIER", DPFLTR_VERIFIER_ID },
318 { "VDS", DPFLTR_VDS_ID },
319 { "VDSBAS", DPFLTR_VDSBAS_ID },
320 { "VDSDYN", DPFLTR_VDSDYN_ID },
321 { "VDSDYNDR", DPFLTR_VDSDYNDR_ID },
322 { "VDSLDR", DPFLTR_VDSLDR_ID },
323 { "VDSUTIL", DPFLTR_VDSUTIL_ID },
324 { "DFRGIFC", DPFLTR_DFRGIFC_ID },
325 { "MM", DPFLTR_MM_ID },
326 { "DFSC", DPFLTR_DFSC_ID },
327 { "WOW64", DPFLTR_WOW64_ID },
328 { "ALPC", DPFLTR_ALPC_ID },
329 { "WDI", DPFLTR_WDI_ID },
330 { "PERFLIB", DPFLTR_PERFLIB_ID },
331 { "KTM", DPFLTR_KTM_ID },
332 { "IOSTRESS", DPFLTR_IOSTRESS_ID },
333 { "HEAP", DPFLTR_HEAP_ID },
334 { "WHEA", DPFLTR_WHEA_ID },
335 { "USERGDI", DPFLTR_USERGDI_ID },
336 { "MMCSS", DPFLTR_MMCSS_ID },
337 { "TPM", DPFLTR_TPM_ID },
338 { "THREADORDER", DPFLTR_THREADORDER_ID },
339 { "ENVIRON", DPFLTR_ENVIRON_ID },
340 { "EMS", DPFLTR_EMS_ID },
341 { "WDT", DPFLTR_WDT_ID },
342 { "FVEVOL", DPFLTR_FVEVOL_ID },
343 { "NDIS", DPFLTR_NDIS_ID },
344 { "NVCTRACE", DPFLTR_NVCTRACE_ID },
345 { "LUAFV", DPFLTR_LUAFV_ID },
346 { "APPCOMPAT", DPFLTR_APPCOMPAT_ID },
347 { "USBSTOR", DPFLTR_USBSTOR_ID },
348 { "SBP2PORT", DPFLTR_SBP2PORT_ID },
349 { "COVERAGE", DPFLTR_COVERAGE_ID },
350 { "CACHEMGR", DPFLTR_CACHEMGR_ID },
351 { "MOUNTMGR", DPFLTR_MOUNTMGR_ID },
352 { "CFR", DPFLTR_CFR_ID },
353 { "TXF", DPFLTR_TXF_ID },
354 { "KSECDD", DPFLTR_KSECDD_ID },
355 { "FLTREGRESS", DPFLTR_FLTREGRESS_ID },
356 { "MPIO", DPFLTR_MPIO_ID },
357 { "MSDSM", DPFLTR_MSDSM_ID },
358 { "UDFS", DPFLTR_UDFS_ID },
359 { "PSHED", DPFLTR_PSHED_ID },
360 { "STORVSP", DPFLTR_STORVSP_ID },
361 { "LSASS", DPFLTR_LSASS_ID },
362 { "SSPICLI", DPFLTR_SSPICLI_ID },
363 { "CNG", DPFLTR_CNG_ID },
364 { "EXFAT", DPFLTR_EXFAT_ID },
365 { "FILETRACE", DPFLTR_FILETRACE_ID },
366 { "XSAVE", DPFLTR_XSAVE_ID },
367 { "SE", DPFLTR_SE_ID },
368 { "DRIVEEXTENDER", DPFLTR_DRIVEEXTENDER_ID },
369 };
370
371 for (i = 0; i < sizeof(ComponentTable) / sizeof(ComponentTable[0]); i++)
372 {
373 if (_stricmp(ComponentName, ComponentTable[i].Name) == 0)
374 {
375 *ComponentId = ComponentTable[i].Id;
376 return TRUE;
377 }
378 }
379
380 return FALSE;
381 }
382
383 /*!\brief Evaluates an expression...
384 *
385 * Much like KdbpRpnEvaluateExpression, but prints the error message (if any)
386 * at the given offset.
387 *
388 * \param Expression Expression to evaluate.
389 * \param ErrOffset Offset (in characters) to print the error message at.
390 * \param Result Receives the result on success.
391 *
392 * \retval TRUE Success.
393 * \retval FALSE Failure.
394 */
395 static BOOLEAN
396 KdbpEvaluateExpression(
397 IN PCHAR Expression,
398 IN LONG ErrOffset,
399 OUT PULONGLONG Result)
400 {
401 static CHAR ErrMsgBuffer[130] = "^ ";
402 LONG ExpressionErrOffset = -1;
403 PCHAR ErrMsg = ErrMsgBuffer;
404 BOOLEAN Ok;
405
406 Ok = KdbpRpnEvaluateExpression(Expression, KdbCurrentTrapFrame, Result,
407 &ExpressionErrOffset, ErrMsgBuffer + 2);
408 if (!Ok)
409 {
410 if (ExpressionErrOffset >= 0)
411 ExpressionErrOffset += ErrOffset;
412 else
413 ErrMsg += 2;
414
415 KdbpPrint("%*s%s\n", ExpressionErrOffset, "", ErrMsg);
416 }
417
418 return Ok;
419 }
420
421 BOOLEAN
422 NTAPI
423 KdbpGetHexNumber(
424 IN PCHAR pszNum,
425 OUT ULONG_PTR *pulValue)
426 {
427 char *endptr;
428
429 /* Skip optional '0x' prefix */
430 if ((pszNum[0] == '0') && ((pszNum[1] == 'x') || (pszNum[1] == 'X')))
431 pszNum += 2;
432
433 /* Make a number from the string (hex) */
434 *pulValue = strtoul(pszNum, &endptr, 16);
435
436 return (*endptr == '\0');
437 }
438
439 /*!\brief Evaluates an expression and displays the result.
440 */
441 static BOOLEAN
442 KdbpCmdEvalExpression(
443 ULONG Argc,
444 PCHAR Argv[])
445 {
446 ULONG i, len;
447 ULONGLONG Result = 0;
448 ULONG ul;
449 LONG l = 0;
450 BOOLEAN Ok;
451
452 if (Argc < 2)
453 {
454 KdbpPrint("?: Argument required\n");
455 return TRUE;
456 }
457
458 /* Put the arguments back together */
459 Argc--;
460 for (i = 1; i < Argc; i++)
461 {
462 len = strlen(Argv[i]);
463 Argv[i][len] = ' ';
464 }
465
466 /* Evaluate the expression */
467 Ok = KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result);
468 if (Ok)
469 {
470 if (Result > 0x00000000ffffffffLL)
471 {
472 if (Result & 0x8000000000000000LL)
473 KdbpPrint("0x%016I64x %20I64u %20I64d\n", Result, Result, Result);
474 else
475 KdbpPrint("0x%016I64x %20I64u\n", Result, Result);
476 }
477 else
478 {
479 ul = (ULONG)Result;
480
481 if (ul <= 0xff && ul >= 0x80)
482 l = (LONG)((CHAR)ul);
483 else if (ul <= 0xffff && ul >= 0x8000)
484 l = (LONG)((SHORT)ul);
485 else
486 l = (LONG)ul;
487
488 if (l < 0)
489 KdbpPrint("0x%08lx %10lu %10ld\n", ul, ul, l);
490 else
491 KdbpPrint("0x%08lx %10lu\n", ul, ul);
492 }
493 }
494
495 return TRUE;
496 }
497
498 #ifdef __ROS_DWARF__
499
500 /*!\brief Print a struct
501 */
502 static VOID
503 KdbpPrintStructInternal
504 (PROSSYM_INFO Info,
505 PCHAR Indent,
506 BOOLEAN DoRead,
507 PVOID BaseAddress,
508 PROSSYM_AGGREGATE Aggregate)
509 {
510 ULONG i;
511 ULONGLONG Result;
512 PROSSYM_AGGREGATE_MEMBER Member;
513 ULONG IndentLen = strlen(Indent);
514 ROSSYM_AGGREGATE MemberAggregate = {0 };
515
516 for (i = 0; i < Aggregate->NumElements; i++) {
517 Member = &Aggregate->Elements[i];
518 KdbpPrint("%s%p+%x: %s", Indent, ((PCHAR)BaseAddress) + Member->BaseOffset, Member->Size, Member->Name ? Member->Name : "<anoymous>");
519 if (DoRead) {
520 if (!strcmp(Member->Type, "_UNICODE_STRING")) {
521 KdbpPrint("\"%wZ\"\n", ((PCHAR)BaseAddress) + Member->BaseOffset);
522 continue;
523 } else if (!strcmp(Member->Type, "PUNICODE_STRING")) {
524 KdbpPrint("\"%wZ\"\n", *(((PUNICODE_STRING*)((PCHAR)BaseAddress) + Member->BaseOffset)));
525 continue;
526 }
527 switch (Member->Size) {
528 case 1:
529 case 2:
530 case 4:
531 case 8: {
532 Result = 0;
533 if (NT_SUCCESS(KdbpSafeReadMemory(&Result, ((PCHAR)BaseAddress) + Member->BaseOffset, Member->Size))) {
534 if (Member->Bits) {
535 Result >>= Member->FirstBit;
536 Result &= ((1 << Member->Bits) - 1);
537 }
538 KdbpPrint(" %lx\n", Result);
539 }
540 else goto readfail;
541 break;
542 }
543 default: {
544 if (Member->Size < 8) {
545 if (NT_SUCCESS(KdbpSafeReadMemory(&Result, ((PCHAR)BaseAddress) + Member->BaseOffset, Member->Size))) {
546 ULONG j;
547 for (j = 0; j < Member->Size; j++) {
548 KdbpPrint(" %02x", (int)(Result & 0xff));
549 Result >>= 8;
550 }
551 } else goto readfail;
552 } else {
553 KdbpPrint(" %s @ %p {\n", Member->Type, ((PCHAR)BaseAddress) + Member->BaseOffset);
554 Indent[IndentLen] = ' ';
555 if (RosSymAggregate(Info, Member->Type, &MemberAggregate)) {
556 KdbpPrintStructInternal(Info, Indent, DoRead, ((PCHAR)BaseAddress) + Member->BaseOffset, &MemberAggregate);
557 RosSymFreeAggregate(&MemberAggregate);
558 }
559 Indent[IndentLen] = 0;
560 KdbpPrint("%s}\n", Indent);
561 } break;
562 }
563 }
564 } else {
565 readfail:
566 if (Member->Size <= 8) {
567 KdbpPrint(" ??\n");
568 } else {
569 KdbpPrint(" %s @ %x {\n", Member->Type, Member->BaseOffset);
570 Indent[IndentLen] = ' ';
571 if (RosSymAggregate(Info, Member->Type, &MemberAggregate)) {
572 KdbpPrintStructInternal(Info, Indent, DoRead, BaseAddress, &MemberAggregate);
573 RosSymFreeAggregate(&MemberAggregate);
574 }
575 Indent[IndentLen] = 0;
576 KdbpPrint("%s}\n", Indent);
577 }
578 }
579 }
580 }
581
582 PROSSYM_INFO KdbpSymFindCachedFile(PUNICODE_STRING ModName);
583
584 static BOOLEAN
585 KdbpCmdPrintStruct(
586 ULONG Argc,
587 PCHAR Argv[])
588 {
589 ULONG i;
590 ULONGLONG Result = 0;
591 PVOID BaseAddress = 0;
592 ROSSYM_AGGREGATE Aggregate = {0};
593 UNICODE_STRING ModName = {0};
594 ANSI_STRING AnsiName = {0};
595 CHAR Indent[100] = {0};
596 PROSSYM_INFO Info;
597
598 if (Argc < 3) goto end;
599 AnsiName.Length = AnsiName.MaximumLength = strlen(Argv[1]);
600 AnsiName.Buffer = Argv[1];
601 RtlAnsiStringToUnicodeString(&ModName, &AnsiName, TRUE);
602 Info = KdbpSymFindCachedFile(&ModName);
603
604 if (!Info || !RosSymAggregate(Info, Argv[2], &Aggregate)) {
605 DPRINT1("Could not get aggregate\n");
606 goto end;
607 }
608
609 // Get an argument for location if it was given
610 if (Argc > 3) {
611 ULONG len;
612 PCHAR ArgStart = Argv[3];
613 DPRINT1("Trying to get expression\n");
614 for (i = 3; i < Argc - 1; i++)
615 {
616 len = strlen(Argv[i]);
617 Argv[i][len] = ' ';
618 }
619
620 /* Evaluate the expression */
621 DPRINT1("Arg: %s\n", ArgStart);
622 if (KdbpEvaluateExpression(ArgStart, strlen(ArgStart), &Result)) {
623 BaseAddress = (PVOID)(ULONG_PTR)Result;
624 DPRINT1("BaseAddress: %p\n", BaseAddress);
625 }
626 }
627 DPRINT1("BaseAddress %p\n", BaseAddress);
628 KdbpPrintStructInternal(Info, Indent, !!BaseAddress, BaseAddress, &Aggregate);
629 end:
630 RosSymFreeAggregate(&Aggregate);
631 RtlFreeUnicodeString(&ModName);
632 return TRUE;
633 }
634 #endif
635
636 /*!\brief Display list of active debug channels
637 */
638 static BOOLEAN
639 KdbpCmdFilter(
640 ULONG Argc,
641 PCHAR Argv[])
642 {
643 ULONG i, j, ComponentId, Level;
644 ULONG set = DPFLTR_MASK, clear = DPFLTR_MASK;
645 PCHAR pend;
646 LPCSTR opt, p;
647
648 static struct
649 {
650 LPCSTR Name;
651 ULONG Level;
652 }
653 debug_classes[] =
654 {
655 { "error", 1 << DPFLTR_ERROR_LEVEL },
656 { "warning", 1 << DPFLTR_WARNING_LEVEL },
657 { "trace", 1 << DPFLTR_TRACE_LEVEL },
658 { "info", 1 << DPFLTR_INFO_LEVEL },
659 };
660
661 for (i = 1; i < Argc; i++)
662 {
663 opt = Argv[i];
664 p = opt + strcspn(opt, "+-");
665 if (!p[0]) p = opt; /* assume it's a debug channel name */
666
667 if (p > opt)
668 {
669 for (j = 0; j < sizeof(debug_classes) / sizeof(debug_classes[0]); j++)
670 {
671 SIZE_T len = strlen(debug_classes[j].Name);
672 if (len != (p - opt))
673 continue;
674 if (_strnicmp(opt, debug_classes[j].Name, len) == 0) /* found it */
675 {
676 if (*p == '+')
677 set |= debug_classes[j].Level;
678 else
679 clear |= debug_classes[j].Level;
680 break;
681 }
682 }
683 if (j == sizeof(debug_classes) / sizeof(debug_classes[0]))
684 {
685 Level = strtoul(opt, &pend, 0);
686 if (pend != p)
687 {
688 KdbpPrint("filter: bad class name '%.*s'\n", p - opt, opt);
689 continue;
690 }
691 if (*p == '+')
692 set |= Level;
693 else
694 clear |= Level;
695 }
696 }
697 else
698 {
699 if (*p == '-')
700 clear = MAXULONG;
701 else
702 set = MAXULONG;
703 }
704 if (*p == '+' || *p == '-')
705 p++;
706
707 if (!KdbpGetComponentId(p, &ComponentId))
708 {
709 KdbpPrint("filter: '%s' is not a valid component name!\n", p);
710 return TRUE;
711 }
712
713 /* Get current mask value */
714 NtSetDebugFilterState(ComponentId, set, TRUE);
715 NtSetDebugFilterState(ComponentId, clear, FALSE);
716 }
717
718 return TRUE;
719 }
720
721 /*!\brief Disassembles 10 instructions at eip or given address or
722 * displays 16 dwords from memory at given address.
723 */
724 static BOOLEAN
725 KdbpCmdDisassembleX(
726 ULONG Argc,
727 PCHAR Argv[])
728 {
729 ULONG Count;
730 ULONG ul;
731 INT i;
732 ULONGLONG Result = 0;
733 ULONG_PTR Address = KdbCurrentTrapFrame->Tf.Eip;
734 LONG InstLen;
735
736 if (Argv[0][0] == 'x') /* display memory */
737 Count = 16;
738 else /* disassemble */
739 Count = 10;
740
741 if (Argc >= 2)
742 {
743 /* Check for [L count] part */
744 ul = 0;
745 if (strcmp(Argv[Argc-2], "L") == 0)
746 {
747 ul = strtoul(Argv[Argc-1], NULL, 0);
748 if (ul > 0)
749 {
750 Count = ul;
751 Argc -= 2;
752 }
753 }
754 else if (Argv[Argc-1][0] == 'L')
755 {
756 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
757 if (ul > 0)
758 {
759 Count = ul;
760 Argc--;
761 }
762 }
763
764 /* Put the remaining arguments back together */
765 Argc--;
766 for (ul = 1; ul < Argc; ul++)
767 {
768 Argv[ul][strlen(Argv[ul])] = ' ';
769 }
770 Argc++;
771 }
772
773 /* Evaluate the expression */
774 if (Argc > 1)
775 {
776 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
777 return TRUE;
778
779 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
780 KdbpPrint("Warning: Address %I64x is beeing truncated\n",Result);
781
782 Address = (ULONG_PTR)Result;
783 }
784 else if (Argv[0][0] == 'x')
785 {
786 KdbpPrint("x: Address argument required.\n");
787 return TRUE;
788 }
789
790 if (Argv[0][0] == 'x')
791 {
792 /* Display dwords */
793 ul = 0;
794
795 while (Count > 0)
796 {
797 if (!KdbSymPrintAddress((PVOID)Address, NULL))
798 KdbpPrint("<%x>:", Address);
799 else
800 KdbpPrint(":");
801
802 i = min(4, Count);
803 Count -= i;
804
805 while (--i >= 0)
806 {
807 if (!NT_SUCCESS(KdbpSafeReadMemory(&ul, (PVOID)Address, sizeof(ul))))
808 KdbpPrint(" ????????");
809 else
810 KdbpPrint(" %08x", ul);
811
812 Address += sizeof(ul);
813 }
814
815 KdbpPrint("\n");
816 }
817 }
818 else
819 {
820 /* Disassemble */
821 while (Count-- > 0)
822 {
823 if (!KdbSymPrintAddress((PVOID)Address, NULL))
824 KdbpPrint("<%08x>: ", Address);
825 else
826 KdbpPrint(": ");
827
828 InstLen = KdbpDisassemble(Address, KdbUseIntelSyntax);
829 if (InstLen < 0)
830 {
831 KdbpPrint("<INVALID>\n");
832 return TRUE;
833 }
834
835 KdbpPrint("\n");
836 Address += InstLen;
837 }
838 }
839
840 return TRUE;
841 }
842
843 /*!\brief Displays CPU registers.
844 */
845 static BOOLEAN
846 KdbpCmdRegs(
847 ULONG Argc,
848 PCHAR Argv[])
849 {
850 PKTRAP_FRAME Tf = &KdbCurrentTrapFrame->Tf;
851 INT i;
852 static const PCHAR EflagsBits[32] = { " CF", NULL, " PF", " BIT3", " AF", " BIT5",
853 " ZF", " SF", " TF", " IF", " DF", " OF",
854 NULL, NULL, " NT", " BIT15", " RF", " VF",
855 " AC", " VIF", " VIP", " ID", " BIT22",
856 " BIT23", " BIT24", " BIT25", " BIT26",
857 " BIT27", " BIT28", " BIT29", " BIT30",
858 " BIT31" };
859
860 if (Argv[0][0] == 'r') /* regs */
861 {
862 KdbpPrint("CS:EIP 0x%04x:0x%08x\n"
863 "SS:ESP 0x%04x:0x%08x\n"
864 " EAX 0x%08x EBX 0x%08x\n"
865 " ECX 0x%08x EDX 0x%08x\n"
866 " ESI 0x%08x EDI 0x%08x\n"
867 " EBP 0x%08x\n",
868 Tf->SegCs & 0xFFFF, Tf->Eip,
869 Tf->HardwareSegSs, Tf->HardwareEsp,
870 Tf->Eax, Tf->Ebx,
871 Tf->Ecx, Tf->Edx,
872 Tf->Esi, Tf->Edi,
873 Tf->Ebp);
874 KdbpPrint("EFLAGS 0x%08x ", Tf->EFlags);
875
876 for (i = 0; i < 32; i++)
877 {
878 if (i == 1)
879 {
880 if ((Tf->EFlags & (1 << 1)) == 0)
881 KdbpPrint(" !BIT1");
882 }
883 else if (i == 12)
884 {
885 KdbpPrint(" IOPL%d", (Tf->EFlags >> 12) & 3);
886 }
887 else if (i == 13)
888 {
889 }
890 else if ((Tf->EFlags & (1 << i)) != 0)
891 {
892 KdbpPrint(EflagsBits[i]);
893 }
894 }
895
896 KdbpPrint("\n");
897 }
898 else if (Argv[0][0] == 'c') /* cregs */
899 {
900 ULONG Cr0, Cr2, Cr3, Cr4;
901 KDESCRIPTOR Gdtr = {0, 0, 0}, Idtr = {0, 0, 0};
902 USHORT Ldtr;
903 static const PCHAR Cr0Bits[32] = { " PE", " MP", " EM", " TS", " ET", " NE", NULL, NULL,
904 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
905 " WP", NULL, " AM", NULL, NULL, NULL, NULL, NULL,
906 NULL, NULL, NULL, NULL, NULL, " NW", " CD", " PG" };
907 static const PCHAR Cr4Bits[32] = { " VME", " PVI", " TSD", " DE", " PSE", " PAE", " MCE", " PGE",
908 " PCE", " OSFXSR", " OSXMMEXCPT", NULL, NULL, NULL, NULL, NULL,
909 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
910 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
911
912 Cr0 = KdbCurrentTrapFrame->Cr0;
913 Cr2 = KdbCurrentTrapFrame->Cr2;
914 Cr3 = KdbCurrentTrapFrame->Cr3;
915 Cr4 = KdbCurrentTrapFrame->Cr4;
916
917 /* Get descriptor table regs */
918 Ke386GetGlobalDescriptorTable(&Gdtr.Limit);
919 Ldtr = Ke386GetLocalDescriptorTable();
920 __sidt(&Idtr.Limit);
921
922 /* Display the control registers */
923 KdbpPrint("CR0 0x%08x ", Cr0);
924
925 for (i = 0; i < 32; i++)
926 {
927 if (!Cr0Bits[i])
928 continue;
929
930 if ((Cr0 & (1 << i)) != 0)
931 KdbpPrint(Cr0Bits[i]);
932 }
933
934 KdbpPrint("\nCR2 0x%08x\n", Cr2);
935 KdbpPrint("CR3 0x%08x Pagedir-Base 0x%08x %s%s\n", Cr3, (Cr3 & 0xfffff000),
936 (Cr3 & (1 << 3)) ? " PWT" : "", (Cr3 & (1 << 4)) ? " PCD" : "" );
937 KdbpPrint("CR4 0x%08x ", Cr4);
938
939 for (i = 0; i < 32; i++)
940 {
941 if (!Cr4Bits[i])
942 continue;
943
944 if ((Cr4 & (1 << i)) != 0)
945 KdbpPrint(Cr4Bits[i]);
946 }
947
948 /* Display the descriptor table regs */
949 KdbpPrint("\nGDTR Base 0x%08x Size 0x%04x\n", Gdtr.Base, Gdtr.Limit);
950 KdbpPrint("LDTR 0x%04x\n", Ldtr);
951 KdbpPrint("IDTR Base 0x%08x Size 0x%04x\n", Idtr.Base, Idtr.Limit);
952 }
953 else if (Argv[0][0] == 's') /* sregs */
954 {
955 KdbpPrint("CS 0x%04x Index 0x%04x %cDT RPL%d\n",
956 Tf->SegCs & 0xffff, (Tf->SegCs & 0xffff) >> 3,
957 (Tf->SegCs & (1 << 2)) ? 'L' : 'G', Tf->SegCs & 3);
958 KdbpPrint("DS 0x%04x Index 0x%04x %cDT RPL%d\n",
959 Tf->SegDs, Tf->SegDs >> 3, (Tf->SegDs & (1 << 2)) ? 'L' : 'G', Tf->SegDs & 3);
960 KdbpPrint("ES 0x%04x Index 0x%04x %cDT RPL%d\n",
961 Tf->SegEs, Tf->SegEs >> 3, (Tf->SegEs & (1 << 2)) ? 'L' : 'G', Tf->SegEs & 3);
962 KdbpPrint("FS 0x%04x Index 0x%04x %cDT RPL%d\n",
963 Tf->SegFs, Tf->SegFs >> 3, (Tf->SegFs & (1 << 2)) ? 'L' : 'G', Tf->SegFs & 3);
964 KdbpPrint("GS 0x%04x Index 0x%04x %cDT RPL%d\n",
965 Tf->SegGs, Tf->SegGs >> 3, (Tf->SegGs & (1 << 2)) ? 'L' : 'G', Tf->SegGs & 3);
966 KdbpPrint("SS 0x%04x Index 0x%04x %cDT RPL%d\n",
967 Tf->HardwareSegSs, Tf->HardwareSegSs >> 3, (Tf->HardwareSegSs & (1 << 2)) ? 'L' : 'G', Tf->HardwareSegSs & 3);
968 }
969 else /* dregs */
970 {
971 ASSERT(Argv[0][0] == 'd');
972 KdbpPrint("DR0 0x%08x\n"
973 "DR1 0x%08x\n"
974 "DR2 0x%08x\n"
975 "DR3 0x%08x\n"
976 "DR6 0x%08x\n"
977 "DR7 0x%08x\n",
978 Tf->Dr0, Tf->Dr1, Tf->Dr2, Tf->Dr3,
979 Tf->Dr6, Tf->Dr7);
980 }
981
982 return TRUE;
983 }
984
985 static BOOLEAN
986 KdbpTrapFrameFromPrevTss(
987 PKTRAP_FRAME TrapFrame)
988 {
989 ULONG_PTR Eip, Ebp;
990 KDESCRIPTOR Gdtr;
991 KGDTENTRY Desc;
992 USHORT Sel;
993 PKTSS Tss;
994
995 Ke386GetGlobalDescriptorTable(&Gdtr.Limit);
996 Sel = Ke386GetTr();
997
998 if ((Sel & (sizeof(KGDTENTRY) - 1)) ||
999 (Sel < sizeof(KGDTENTRY)) ||
1000 (Sel + sizeof(KGDTENTRY) - 1 > Gdtr.Limit))
1001 return FALSE;
1002
1003 if (!NT_SUCCESS(KdbpSafeReadMemory(&Desc,
1004 (PVOID)(Gdtr.Base + Sel),
1005 sizeof(KGDTENTRY))))
1006 return FALSE;
1007
1008 if (Desc.HighWord.Bits.Type != 0xB)
1009 return FALSE;
1010
1011 Tss = (PKTSS)(ULONG_PTR)(Desc.BaseLow |
1012 Desc.HighWord.Bytes.BaseMid << 16 |
1013 Desc.HighWord.Bytes.BaseHi << 24);
1014
1015 if (!NT_SUCCESS(KdbpSafeReadMemory(&Sel,
1016 (PVOID)&Tss->Backlink,
1017 sizeof(USHORT))))
1018 return FALSE;
1019
1020 if ((Sel & (sizeof(KGDTENTRY) - 1)) ||
1021 (Sel < sizeof(KGDTENTRY)) ||
1022 (Sel + sizeof(KGDTENTRY) - 1 > Gdtr.Limit))
1023 return FALSE;
1024
1025 if (!NT_SUCCESS(KdbpSafeReadMemory(&Desc,
1026 (PVOID)(Gdtr.Base + Sel),
1027 sizeof(KGDTENTRY))))
1028 return FALSE;
1029
1030 if (Desc.HighWord.Bits.Type != 0xB)
1031 return FALSE;
1032
1033 Tss = (PKTSS)(ULONG_PTR)(Desc.BaseLow |
1034 Desc.HighWord.Bytes.BaseMid << 16 |
1035 Desc.HighWord.Bytes.BaseHi << 24);
1036
1037 if (!NT_SUCCESS(KdbpSafeReadMemory(&Eip,
1038 (PVOID)&Tss->Eip,
1039 sizeof(ULONG_PTR))))
1040 return FALSE;
1041
1042 if (!NT_SUCCESS(KdbpSafeReadMemory(&Ebp,
1043 (PVOID)&Tss->Ebp,
1044 sizeof(ULONG_PTR))))
1045 return FALSE;
1046
1047 TrapFrame->Eip = Eip;
1048 TrapFrame->Ebp = Ebp;
1049 return TRUE;
1050 }
1051
1052 VOID __cdecl KiTrap02(VOID);
1053 VOID FASTCALL KiTrap03Handler(IN PKTRAP_FRAME);
1054 VOID __cdecl KiTrap08(VOID);
1055 VOID __cdecl KiTrap09(VOID);
1056
1057 static BOOLEAN
1058 KdbpInNmiOrDoubleFaultHandler(
1059 ULONG_PTR Address)
1060 {
1061 return (Address > (ULONG_PTR)KiTrap02 && Address < (ULONG_PTR)KiTrap03Handler) ||
1062 (Address > (ULONG_PTR)KiTrap08 && Address < (ULONG_PTR)KiTrap09);
1063 }
1064
1065 /*!\brief Displays a backtrace.
1066 */
1067 static BOOLEAN
1068 KdbpCmdBackTrace(
1069 ULONG Argc,
1070 PCHAR Argv[])
1071 {
1072 ULONG ul;
1073 ULONGLONG Result = 0;
1074 ULONG_PTR Frame = KdbCurrentTrapFrame->Tf.Ebp;
1075 ULONG_PTR Address;
1076 KTRAP_FRAME TrapFrame;
1077
1078 if (Argc >= 2)
1079 {
1080 /* Check for [L count] part */
1081 ul = 0;
1082
1083 if (strcmp(Argv[Argc-2], "L") == 0)
1084 {
1085 ul = strtoul(Argv[Argc-1], NULL, 0);
1086 if (ul > 0)
1087 {
1088 Argc -= 2;
1089 }
1090 }
1091 else if (Argv[Argc-1][0] == 'L')
1092 {
1093 ul = strtoul(Argv[Argc-1] + 1, NULL, 0);
1094 if (ul > 0)
1095 {
1096 Argc--;
1097 }
1098 }
1099
1100 /* Put the remaining arguments back together */
1101 Argc--;
1102 for (ul = 1; ul < Argc; ul++)
1103 {
1104 Argv[ul][strlen(Argv[ul])] = ' ';
1105 }
1106 Argc++;
1107 }
1108
1109 /* Check if frame addr or thread id is given. */
1110 if (Argc > 1)
1111 {
1112 if (Argv[1][0] == '*')
1113 {
1114 Argv[1]++;
1115
1116 /* Evaluate the expression */
1117 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
1118 return TRUE;
1119
1120 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1121 KdbpPrint("Warning: Address %I64x is beeing truncated\n",Result);
1122
1123 Frame = (ULONG_PTR)Result;
1124 }
1125 else
1126 {
1127 KdbpPrint("Thread backtrace not supported yet!\n");
1128 return TRUE;
1129 }
1130 }
1131 else
1132 {
1133 KdbpPrint("Eip:\n");
1134
1135 /* Try printing the function at EIP */
1136 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip, &KdbCurrentTrapFrame->Tf))
1137 KdbpPrint("<%08x>\n", KdbCurrentTrapFrame->Tf.Eip);
1138 else
1139 KdbpPrint("\n");
1140 }
1141
1142 TrapFrame = KdbCurrentTrapFrame->Tf;
1143 KdbpPrint("Frames:\n");
1144
1145 for (;;)
1146 {
1147 BOOLEAN GotNextFrame;
1148
1149 if (Frame == 0)
1150 break;
1151
1152 if (!NT_SUCCESS(KdbpSafeReadMemory(&Address, (PVOID)(Frame + sizeof(ULONG_PTR)), sizeof (ULONG_PTR))))
1153 {
1154 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame + sizeof(ULONG_PTR));
1155 break;
1156 }
1157
1158 if ((GotNextFrame = NT_SUCCESS(KdbpSafeReadMemory(&Frame, (PVOID)Frame, sizeof (ULONG_PTR)))))
1159 TrapFrame.Ebp = Frame;
1160
1161 /* Print the location of the call instruction */
1162 if (!KdbSymPrintAddress((PVOID)(Address - 5), &TrapFrame))
1163 KdbpPrint("<%08x>\n", Address);
1164 else
1165 KdbpPrint("\n");
1166
1167 if (KdbOutputAborted) break;
1168
1169 if (Address == 0)
1170 break;
1171
1172 if (KdbpInNmiOrDoubleFaultHandler(Address))
1173 {
1174 if ((GotNextFrame = KdbpTrapFrameFromPrevTss(&TrapFrame)))
1175 {
1176 Address = TrapFrame.Eip;
1177 Frame = TrapFrame.Ebp;
1178
1179 if (!KdbSymPrintAddress((PVOID)Address, &TrapFrame))
1180 KdbpPrint("<%08x>\n", Address);
1181 else
1182 KdbpPrint("\n");
1183 }
1184 }
1185
1186 if (!GotNextFrame)
1187 {
1188 KdbpPrint("Couldn't access memory at 0x%p!\n", Frame);
1189 break;
1190 }
1191 }
1192
1193 return TRUE;
1194 }
1195
1196 /*!\brief Continues execution of the system/leaves KDB.
1197 */
1198 static BOOLEAN
1199 KdbpCmdContinue(
1200 ULONG Argc,
1201 PCHAR Argv[])
1202 {
1203 /* Exit the main loop */
1204 return FALSE;
1205 }
1206
1207 /*!\brief Continues execution of the system/leaves KDB.
1208 */
1209 static BOOLEAN
1210 KdbpCmdStep(
1211 ULONG Argc,
1212 PCHAR Argv[])
1213 {
1214 ULONG Count = 1;
1215
1216 if (Argc > 1)
1217 {
1218 Count = strtoul(Argv[1], NULL, 0);
1219 if (Count == 0)
1220 {
1221 KdbpPrint("%s: Integer argument required\n", Argv[0]);
1222 return TRUE;
1223 }
1224 }
1225
1226 if (Argv[0][0] == 'n')
1227 KdbSingleStepOver = TRUE;
1228 else
1229 KdbSingleStepOver = FALSE;
1230
1231 /* Set the number of single steps and return to the interrupted code. */
1232 KdbNumSingleSteps = Count;
1233
1234 return FALSE;
1235 }
1236
1237 /*!\brief Lists breakpoints.
1238 */
1239 static BOOLEAN
1240 KdbpCmdBreakPointList(
1241 ULONG Argc,
1242 PCHAR Argv[])
1243 {
1244 LONG l;
1245 ULONG_PTR Address = 0;
1246 KDB_BREAKPOINT_TYPE Type = 0;
1247 KDB_ACCESS_TYPE AccessType = 0;
1248 UCHAR Size = 0;
1249 UCHAR DebugReg = 0;
1250 BOOLEAN Enabled = FALSE;
1251 BOOLEAN Global = FALSE;
1252 PEPROCESS Process = NULL;
1253 PCHAR str1, str2, ConditionExpr, GlobalOrLocal;
1254 CHAR Buffer[20];
1255
1256 l = KdbpGetNextBreakPointNr(0);
1257 if (l < 0)
1258 {
1259 KdbpPrint("No breakpoints.\n");
1260 return TRUE;
1261 }
1262
1263 KdbpPrint("Breakpoints:\n");
1264 do
1265 {
1266 if (!KdbpGetBreakPointInfo(l, &Address, &Type, &Size, &AccessType, &DebugReg,
1267 &Enabled, &Global, &Process, &ConditionExpr))
1268 {
1269 continue;
1270 }
1271
1272 if (l == KdbLastBreakPointNr)
1273 {
1274 str1 = "\x1b[1m*";
1275 str2 = "\x1b[0m";
1276 }
1277 else
1278 {
1279 str1 = " ";
1280 str2 = "";
1281 }
1282
1283 if (Global)
1284 {
1285 GlobalOrLocal = " global";
1286 }
1287 else
1288 {
1289 GlobalOrLocal = Buffer;
1290 sprintf(Buffer, " PID 0x%08lx",
1291 (ULONG)(Process ? Process->UniqueProcessId : INVALID_HANDLE_VALUE));
1292 }
1293
1294 if (Type == KdbBreakPointSoftware || Type == KdbBreakPointTemporary)
1295 {
1296 KdbpPrint(" %s%03d BPX 0x%08x%s%s%s%s%s\n",
1297 str1, l, Address,
1298 Enabled ? "" : " disabled",
1299 GlobalOrLocal,
1300 ConditionExpr ? " IF " : "",
1301 ConditionExpr ? ConditionExpr : "",
1302 str2);
1303 }
1304 else if (Type == KdbBreakPointHardware)
1305 {
1306 if (!Enabled)
1307 {
1308 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s disabled%s%s%s%s\n", str1, l, Address,
1309 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1310 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1311 GlobalOrLocal,
1312 ConditionExpr ? " IF " : "",
1313 ConditionExpr ? ConditionExpr : "",
1314 str2);
1315 }
1316 else
1317 {
1318 KdbpPrint(" %s%03d BPM 0x%08x %-5s %-5s DR%d%s%s%s%s\n", str1, l, Address,
1319 KDB_ACCESS_TYPE_TO_STRING(AccessType),
1320 Size == 1 ? "byte" : (Size == 2 ? "word" : "dword"),
1321 DebugReg,
1322 GlobalOrLocal,
1323 ConditionExpr ? " IF " : "",
1324 ConditionExpr ? ConditionExpr : "",
1325 str2);
1326 }
1327 }
1328 }
1329 while ((l = KdbpGetNextBreakPointNr(l+1)) >= 0);
1330
1331 return TRUE;
1332 }
1333
1334 /*!\brief Enables, disables or clears a breakpoint.
1335 */
1336 static BOOLEAN
1337 KdbpCmdEnableDisableClearBreakPoint(
1338 ULONG Argc,
1339 PCHAR Argv[])
1340 {
1341 PCHAR pend;
1342 ULONG BreakPointNr;
1343
1344 if (Argc < 2)
1345 {
1346 KdbpPrint("%s: argument required\n", Argv[0]);
1347 return TRUE;
1348 }
1349
1350 pend = Argv[1];
1351 BreakPointNr = strtoul(Argv[1], &pend, 0);
1352 if (pend == Argv[1] || *pend != '\0')
1353 {
1354 KdbpPrint("%s: integer argument required\n", Argv[0]);
1355 return TRUE;
1356 }
1357
1358 if (Argv[0][1] == 'e') /* enable */
1359 {
1360 KdbpEnableBreakPoint(BreakPointNr, NULL);
1361 }
1362 else if (Argv [0][1] == 'd') /* disable */
1363 {
1364 KdbpDisableBreakPoint(BreakPointNr, NULL);
1365 }
1366 else /* clear */
1367 {
1368 ASSERT(Argv[0][1] == 'c');
1369 KdbpDeleteBreakPoint(BreakPointNr, NULL);
1370 }
1371
1372 return TRUE;
1373 }
1374
1375 /*!\brief Sets a software or hardware (memory) breakpoint at the given address.
1376 */
1377 static BOOLEAN
1378 KdbpCmdBreakPoint(ULONG Argc, PCHAR Argv[])
1379 {
1380 ULONGLONG Result = 0;
1381 ULONG_PTR Address;
1382 KDB_BREAKPOINT_TYPE Type;
1383 UCHAR Size = 0;
1384 KDB_ACCESS_TYPE AccessType = 0;
1385 ULONG AddressArgIndex, i;
1386 LONG ConditionArgIndex;
1387 BOOLEAN Global = TRUE;
1388
1389 if (Argv[0][2] == 'x') /* software breakpoint */
1390 {
1391 if (Argc < 2)
1392 {
1393 KdbpPrint("bpx: Address argument required.\n");
1394 return TRUE;
1395 }
1396
1397 AddressArgIndex = 1;
1398 Type = KdbBreakPointSoftware;
1399 }
1400 else /* memory breakpoint */
1401 {
1402 ASSERT(Argv[0][2] == 'm');
1403
1404 if (Argc < 2)
1405 {
1406 KdbpPrint("bpm: Access type argument required (one of r, w, rw, x)\n");
1407 return TRUE;
1408 }
1409
1410 if (_stricmp(Argv[1], "x") == 0)
1411 AccessType = KdbAccessExec;
1412 else if (_stricmp(Argv[1], "r") == 0)
1413 AccessType = KdbAccessRead;
1414 else if (_stricmp(Argv[1], "w") == 0)
1415 AccessType = KdbAccessWrite;
1416 else if (_stricmp(Argv[1], "rw") == 0)
1417 AccessType = KdbAccessReadWrite;
1418 else
1419 {
1420 KdbpPrint("bpm: Unknown access type '%s'\n", Argv[1]);
1421 return TRUE;
1422 }
1423
1424 if (Argc < 3)
1425 {
1426 KdbpPrint("bpm: %s argument required.\n", AccessType == KdbAccessExec ? "Address" : "Memory size");
1427 return TRUE;
1428 }
1429
1430 AddressArgIndex = 3;
1431 if (_stricmp(Argv[2], "byte") == 0)
1432 Size = 1;
1433 else if (_stricmp(Argv[2], "word") == 0)
1434 Size = 2;
1435 else if (_stricmp(Argv[2], "dword") == 0)
1436 Size = 4;
1437 else if (AccessType == KdbAccessExec)
1438 {
1439 Size = 1;
1440 AddressArgIndex--;
1441 }
1442 else
1443 {
1444 KdbpPrint("bpm: Unknown memory size '%s'\n", Argv[2]);
1445 return TRUE;
1446 }
1447
1448 if (Argc <= AddressArgIndex)
1449 {
1450 KdbpPrint("bpm: Address argument required.\n");
1451 return TRUE;
1452 }
1453
1454 Type = KdbBreakPointHardware;
1455 }
1456
1457 /* Put the arguments back together */
1458 ConditionArgIndex = -1;
1459 for (i = AddressArgIndex; i < (Argc-1); i++)
1460 {
1461 if (strcmp(Argv[i+1], "IF") == 0) /* IF found */
1462 {
1463 ConditionArgIndex = i + 2;
1464 if ((ULONG)ConditionArgIndex >= Argc)
1465 {
1466 KdbpPrint("%s: IF requires condition expression.\n", Argv[0]);
1467 return TRUE;
1468 }
1469
1470 for (i = ConditionArgIndex; i < (Argc-1); i++)
1471 Argv[i][strlen(Argv[i])] = ' ';
1472
1473 break;
1474 }
1475
1476 Argv[i][strlen(Argv[i])] = ' ';
1477 }
1478
1479 /* Evaluate the address expression */
1480 if (!KdbpEvaluateExpression(Argv[AddressArgIndex],
1481 sizeof("kdb:> ")-1 + (Argv[AddressArgIndex]-Argv[0]),
1482 &Result))
1483 {
1484 return TRUE;
1485 }
1486
1487 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1488 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1489
1490 Address = (ULONG_PTR)Result;
1491
1492 KdbpInsertBreakPoint(Address, Type, Size, AccessType,
1493 (ConditionArgIndex < 0) ? NULL : Argv[ConditionArgIndex],
1494 Global, NULL);
1495
1496 return TRUE;
1497 }
1498
1499 /*!\brief Lists threads or switches to another thread context.
1500 */
1501 static BOOLEAN
1502 KdbpCmdThread(
1503 ULONG Argc,
1504 PCHAR Argv[])
1505 {
1506 PLIST_ENTRY Entry;
1507 PETHREAD Thread = NULL;
1508 PEPROCESS Process = NULL;
1509 BOOLEAN ReferencedThread = FALSE, ReferencedProcess = FALSE;
1510 PULONG Esp;
1511 PULONG Ebp;
1512 ULONG Eip;
1513 ULONG ul = 0;
1514 PCHAR State, pend, str1, str2;
1515 static const PCHAR ThreadStateToString[DeferredReady+1] =
1516 {
1517 "Initialized", "Ready", "Running",
1518 "Standby", "Terminated", "Waiting",
1519 "Transition", "DeferredReady"
1520 };
1521
1522 ASSERT(KdbCurrentProcess);
1523
1524 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1525 {
1526 Process = KdbCurrentProcess;
1527
1528 if (Argc >= 3)
1529 {
1530 ul = strtoul(Argv[2], &pend, 0);
1531 if (Argv[2] == pend)
1532 {
1533 KdbpPrint("thread: '%s' is not a valid process id!\n", Argv[2]);
1534 return TRUE;
1535 }
1536
1537 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1538 {
1539 KdbpPrint("thread: Invalid process id!\n");
1540 return TRUE;
1541 }
1542
1543 /* Remember our reference */
1544 ReferencedProcess = TRUE;
1545 }
1546
1547 Entry = Process->ThreadListHead.Flink;
1548 if (Entry == &Process->ThreadListHead)
1549 {
1550 if (Argc >= 3)
1551 KdbpPrint("No threads in process 0x%08x!\n", ul);
1552 else
1553 KdbpPrint("No threads in current process!\n");
1554
1555 if (ReferencedProcess)
1556 ObDereferenceObject(Process);
1557
1558 return TRUE;
1559 }
1560
1561 KdbpPrint(" TID State Prior. Affinity EBP EIP\n");
1562 do
1563 {
1564 Thread = CONTAINING_RECORD(Entry, ETHREAD, ThreadListEntry);
1565
1566 if (Thread == KdbCurrentThread)
1567 {
1568 str1 = "\x1b[1m*";
1569 str2 = "\x1b[0m";
1570 }
1571 else
1572 {
1573 str1 = " ";
1574 str2 = "";
1575 }
1576
1577 if (!Thread->Tcb.InitialStack)
1578 {
1579 /* Thread has no kernel stack (probably terminated) */
1580 Esp = Ebp = NULL;
1581 Eip = 0;
1582 }
1583 else if (Thread->Tcb.TrapFrame)
1584 {
1585 if (Thread->Tcb.TrapFrame->PreviousPreviousMode == KernelMode)
1586 Esp = (PULONG)Thread->Tcb.TrapFrame->TempEsp;
1587 else
1588 Esp = (PULONG)Thread->Tcb.TrapFrame->HardwareEsp;
1589
1590 Ebp = (PULONG)Thread->Tcb.TrapFrame->Ebp;
1591 Eip = Thread->Tcb.TrapFrame->Eip;
1592 }
1593 else
1594 {
1595 Esp = (PULONG)Thread->Tcb.KernelStack;
1596 Ebp = (PULONG)Esp[4];
1597 Eip = 0;
1598
1599 if (Ebp) /* FIXME: Should we attach to the process to read Ebp[1]? */
1600 KdbpSafeReadMemory(&Eip, Ebp + 1, sizeof (Eip));
1601 }
1602
1603 if (Thread->Tcb.State < (DeferredReady + 1))
1604 State = ThreadStateToString[Thread->Tcb.State];
1605 else
1606 State = "Unknown";
1607
1608 KdbpPrint(" %s0x%08x %-11s %3d 0x%08x 0x%08x 0x%08x%s\n",
1609 str1,
1610 Thread->Cid.UniqueThread,
1611 State,
1612 Thread->Tcb.Priority,
1613 Thread->Tcb.Affinity,
1614 Ebp,
1615 Eip,
1616 str2);
1617
1618 Entry = Entry->Flink;
1619 }
1620 while (Entry != &Process->ThreadListHead);
1621
1622 /* Release our reference, if any */
1623 if (ReferencedProcess)
1624 ObDereferenceObject(Process);
1625 }
1626 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1627 {
1628 if (Argc < 3)
1629 {
1630 KdbpPrint("thread attach: thread id argument required!\n");
1631 return TRUE;
1632 }
1633
1634 ul = strtoul(Argv[2], &pend, 0);
1635 if (Argv[2] == pend)
1636 {
1637 KdbpPrint("thread attach: '%s' is not a valid thread id!\n", Argv[2]);
1638 return TRUE;
1639 }
1640
1641 if (!KdbpAttachToThread((PVOID)ul))
1642 {
1643 return TRUE;
1644 }
1645
1646 KdbpPrint("Attached to thread 0x%08x.\n", ul);
1647 }
1648 else
1649 {
1650 Thread = KdbCurrentThread;
1651
1652 if (Argc >= 2)
1653 {
1654 ul = strtoul(Argv[1], &pend, 0);
1655 if (Argv[1] == pend)
1656 {
1657 KdbpPrint("thread: '%s' is not a valid thread id!\n", Argv[1]);
1658 return TRUE;
1659 }
1660
1661 if (!NT_SUCCESS(PsLookupThreadByThreadId((PVOID)ul, &Thread)))
1662 {
1663 KdbpPrint("thread: Invalid thread id!\n");
1664 return TRUE;
1665 }
1666
1667 /* Remember our reference */
1668 ReferencedThread = TRUE;
1669 }
1670
1671 if (Thread->Tcb.State < (DeferredReady + 1))
1672 State = ThreadStateToString[Thread->Tcb.State];
1673 else
1674 State = "Unknown";
1675
1676 KdbpPrint("%s"
1677 " TID: 0x%08x\n"
1678 " State: %s (0x%x)\n"
1679 " Priority: %d\n"
1680 " Affinity: 0x%08x\n"
1681 " Initial Stack: 0x%08x\n"
1682 " Stack Limit: 0x%08x\n"
1683 " Stack Base: 0x%08x\n"
1684 " Kernel Stack: 0x%08x\n"
1685 " Trap Frame: 0x%08x\n"
1686 " NPX State: %s (0x%x)\n",
1687 (Argc < 2) ? "Current Thread:\n" : "",
1688 Thread->Cid.UniqueThread,
1689 State, Thread->Tcb.State,
1690 Thread->Tcb.Priority,
1691 Thread->Tcb.Affinity,
1692 Thread->Tcb.InitialStack,
1693 Thread->Tcb.StackLimit,
1694 Thread->Tcb.StackBase,
1695 Thread->Tcb.KernelStack,
1696 Thread->Tcb.TrapFrame,
1697 NPX_STATE_TO_STRING(Thread->Tcb.NpxState), Thread->Tcb.NpxState);
1698
1699 /* Release our reference if we had one */
1700 if (ReferencedThread)
1701 ObDereferenceObject(Thread);
1702 }
1703
1704 return TRUE;
1705 }
1706
1707 /*!\brief Lists processes or switches to another process context.
1708 */
1709 static BOOLEAN
1710 KdbpCmdProc(
1711 ULONG Argc,
1712 PCHAR Argv[])
1713 {
1714 PLIST_ENTRY Entry;
1715 PEPROCESS Process;
1716 BOOLEAN ReferencedProcess = FALSE;
1717 PCHAR State, pend, str1, str2;
1718 ULONG ul;
1719 extern LIST_ENTRY PsActiveProcessHead;
1720
1721 if (Argc >= 2 && _stricmp(Argv[1], "list") == 0)
1722 {
1723 Entry = PsActiveProcessHead.Flink;
1724 if (!Entry || Entry == &PsActiveProcessHead)
1725 {
1726 KdbpPrint("No processes in the system!\n");
1727 return TRUE;
1728 }
1729
1730 KdbpPrint(" PID State Filename\n");
1731 do
1732 {
1733 Process = CONTAINING_RECORD(Entry, EPROCESS, ActiveProcessLinks);
1734
1735 if (Process == KdbCurrentProcess)
1736 {
1737 str1 = "\x1b[1m*";
1738 str2 = "\x1b[0m";
1739 }
1740 else
1741 {
1742 str1 = " ";
1743 str2 = "";
1744 }
1745
1746 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1747 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1748
1749 KdbpPrint(" %s0x%08x %-10s %s%s\n",
1750 str1,
1751 Process->UniqueProcessId,
1752 State,
1753 Process->ImageFileName,
1754 str2);
1755
1756 Entry = Entry->Flink;
1757 }
1758 while(Entry != &PsActiveProcessHead);
1759 }
1760 else if (Argc >= 2 && _stricmp(Argv[1], "attach") == 0)
1761 {
1762 if (Argc < 3)
1763 {
1764 KdbpPrint("process attach: process id argument required!\n");
1765 return TRUE;
1766 }
1767
1768 ul = strtoul(Argv[2], &pend, 0);
1769 if (Argv[2] == pend)
1770 {
1771 KdbpPrint("process attach: '%s' is not a valid process id!\n", Argv[2]);
1772 return TRUE;
1773 }
1774
1775 if (!KdbpAttachToProcess((PVOID)ul))
1776 {
1777 return TRUE;
1778 }
1779
1780 KdbpPrint("Attached to process 0x%08x, thread 0x%08x.\n", (ULONG)ul,
1781 (ULONG)KdbCurrentThread->Cid.UniqueThread);
1782 }
1783 else
1784 {
1785 Process = KdbCurrentProcess;
1786
1787 if (Argc >= 2)
1788 {
1789 ul = strtoul(Argv[1], &pend, 0);
1790 if (Argv[1] == pend)
1791 {
1792 KdbpPrint("proc: '%s' is not a valid process id!\n", Argv[1]);
1793 return TRUE;
1794 }
1795
1796 if (!NT_SUCCESS(PsLookupProcessByProcessId((PVOID)ul, &Process)))
1797 {
1798 KdbpPrint("proc: Invalid process id!\n");
1799 return TRUE;
1800 }
1801
1802 /* Remember our reference */
1803 ReferencedProcess = TRUE;
1804 }
1805
1806 State = ((Process->Pcb.State == ProcessInMemory) ? "In Memory" :
1807 ((Process->Pcb.State == ProcessOutOfMemory) ? "Out of Memory" : "In Transition"));
1808 KdbpPrint("%s"
1809 " PID: 0x%08x\n"
1810 " State: %s (0x%x)\n"
1811 " Image Filename: %s\n",
1812 (Argc < 2) ? "Current process:\n" : "",
1813 Process->UniqueProcessId,
1814 State, Process->Pcb.State,
1815 Process->ImageFileName);
1816
1817 /* Release our reference, if any */
1818 if (ReferencedProcess)
1819 ObDereferenceObject(Process);
1820 }
1821
1822 return TRUE;
1823 }
1824
1825 /*!\brief Lists loaded modules or the one containing the specified address.
1826 */
1827 static BOOLEAN
1828 KdbpCmdMod(
1829 ULONG Argc,
1830 PCHAR Argv[])
1831 {
1832 ULONGLONG Result = 0;
1833 ULONG_PTR Address;
1834 PLDR_DATA_TABLE_ENTRY LdrEntry;
1835 BOOLEAN DisplayOnlyOneModule = FALSE;
1836 INT i = 0;
1837
1838 if (Argc >= 2)
1839 {
1840 /* Put the arguments back together */
1841 Argc--;
1842 while (--Argc >= 1)
1843 Argv[Argc][strlen(Argv[Argc])] = ' ';
1844
1845 /* Evaluate the expression */
1846 if (!KdbpEvaluateExpression(Argv[1], sizeof("kdb:> ")-1 + (Argv[1]-Argv[0]), &Result))
1847 {
1848 return TRUE;
1849 }
1850
1851 if (Result > (ULONGLONG)(~((ULONG_PTR)0)))
1852 KdbpPrint("%s: Warning: Address %I64x is beeing truncated\n", Argv[0],Result);
1853
1854 Address = (ULONG_PTR)Result;
1855
1856 if (!KdbpSymFindModule((PVOID)Address, NULL, -1, &LdrEntry))
1857 {
1858 KdbpPrint("No module containing address 0x%p found!\n", Address);
1859 return TRUE;
1860 }
1861
1862 DisplayOnlyOneModule = TRUE;
1863 }
1864 else
1865 {
1866 if (!KdbpSymFindModule(NULL, NULL, 0, &LdrEntry))
1867 {
1868 ULONG_PTR ntoskrnlBase = ((ULONG_PTR)KdbpCmdMod) & 0xfff00000;
1869 KdbpPrint(" Base Size Name\n");
1870 KdbpPrint(" %08x %08x %s\n", ntoskrnlBase, 0, "ntoskrnl.exe");
1871 return TRUE;
1872 }
1873
1874 i = 1;
1875 }
1876
1877 KdbpPrint(" Base Size Name\n");
1878 for (;;)
1879 {
1880 KdbpPrint(" %08x %08x %wZ\n", LdrEntry->DllBase, LdrEntry->SizeOfImage, &LdrEntry->BaseDllName);
1881
1882 if(DisplayOnlyOneModule || !KdbpSymFindModule(NULL, NULL, i++, &LdrEntry))
1883 break;
1884 }
1885
1886 return TRUE;
1887 }
1888
1889 /*!\brief Displays GDT, LDT or IDTd.
1890 */
1891 static BOOLEAN
1892 KdbpCmdGdtLdtIdt(
1893 ULONG Argc,
1894 PCHAR Argv[])
1895 {
1896 KDESCRIPTOR Reg;
1897 ULONG SegDesc[2];
1898 ULONG SegBase;
1899 ULONG SegLimit;
1900 PCHAR SegType;
1901 USHORT SegSel;
1902 UCHAR Type, Dpl;
1903 INT i;
1904 ULONG ul;
1905
1906 if (Argv[0][0] == 'i')
1907 {
1908 /* Read IDTR */
1909 __sidt(&Reg.Limit);
1910
1911 if (Reg.Limit < 7)
1912 {
1913 KdbpPrint("Interrupt descriptor table is empty.\n");
1914 return TRUE;
1915 }
1916
1917 KdbpPrint("IDT Base: 0x%08x Limit: 0x%04x\n", Reg.Base, Reg.Limit);
1918 KdbpPrint(" Idx Type Seg. Sel. Offset DPL\n");
1919
1920 for (i = 0; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1921 {
1922 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1923 {
1924 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1925 return TRUE;
1926 }
1927
1928 Dpl = ((SegDesc[1] >> 13) & 3);
1929 if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1930 SegType = "TASKGATE";
1931 else if ((SegDesc[1] & 0x1fe0) == 0x0e00) /* 32 bit Interrupt gate */
1932 SegType = "INTGATE32";
1933 else if ((SegDesc[1] & 0x1fe0) == 0x0600) /* 16 bit Interrupt gate */
1934 SegType = "INTGATE16";
1935 else if ((SegDesc[1] & 0x1fe0) == 0x0f00) /* 32 bit Trap gate */
1936 SegType = "TRAPGATE32";
1937 else if ((SegDesc[1] & 0x1fe0) == 0x0700) /* 16 bit Trap gate */
1938 SegType = "TRAPGATE16";
1939 else
1940 SegType = "UNKNOWN";
1941
1942 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
1943 {
1944 KdbpPrint(" %03d %-10s [NP] [NP] %02d\n",
1945 i / 8, SegType, Dpl);
1946 }
1947 else if ((SegDesc[1] & 0x1f00) == 0x0500) /* Task gate */
1948 {
1949 SegSel = SegDesc[0] >> 16;
1950 KdbpPrint(" %03d %-10s 0x%04x %02d\n",
1951 i / 8, SegType, SegSel, Dpl);
1952 }
1953 else
1954 {
1955 SegSel = SegDesc[0] >> 16;
1956 SegBase = (SegDesc[1] & 0xffff0000) | (SegDesc[0] & 0x0000ffff);
1957 KdbpPrint(" %03d %-10s 0x%04x 0x%08x %02d\n",
1958 i / 8, SegType, SegSel, SegBase, Dpl);
1959 }
1960 }
1961 }
1962 else
1963 {
1964 ul = 0;
1965
1966 if (Argv[0][0] == 'g')
1967 {
1968 /* Read GDTR */
1969 Ke386GetGlobalDescriptorTable(&Reg.Limit);
1970 i = 8;
1971 }
1972 else
1973 {
1974 ASSERT(Argv[0][0] == 'l');
1975
1976 /* Read LDTR */
1977 Reg.Limit = Ke386GetLocalDescriptorTable();
1978 Reg.Base = 0;
1979 i = 0;
1980 ul = 1 << 2;
1981 }
1982
1983 if (Reg.Limit < 7)
1984 {
1985 KdbpPrint("%s descriptor table is empty.\n",
1986 Argv[0][0] == 'g' ? "Global" : "Local");
1987 return TRUE;
1988 }
1989
1990 KdbpPrint("%cDT Base: 0x%08x Limit: 0x%04x\n",
1991 Argv[0][0] == 'g' ? 'G' : 'L', Reg.Base, Reg.Limit);
1992 KdbpPrint(" Idx Sel. Type Base Limit DPL Attribs\n");
1993
1994 for (; (i + sizeof(SegDesc) - 1) <= Reg.Limit; i += 8)
1995 {
1996 if (!NT_SUCCESS(KdbpSafeReadMemory(SegDesc, (PVOID)(Reg.Base + i), sizeof(SegDesc))))
1997 {
1998 KdbpPrint("Couldn't access memory at 0x%08x!\n", Reg.Base + i);
1999 return TRUE;
2000 }
2001
2002 Dpl = ((SegDesc[1] >> 13) & 3);
2003 Type = ((SegDesc[1] >> 8) & 0xf);
2004
2005 SegBase = SegDesc[0] >> 16;
2006 SegBase |= (SegDesc[1] & 0xff) << 16;
2007 SegBase |= SegDesc[1] & 0xff000000;
2008 SegLimit = SegDesc[0] & 0x0000ffff;
2009 SegLimit |= (SegDesc[1] >> 16) & 0xf;
2010
2011 if ((SegDesc[1] & (1 << 23)) != 0)
2012 {
2013 SegLimit *= 4096;
2014 SegLimit += 4095;
2015 }
2016 else
2017 {
2018 SegLimit++;
2019 }
2020
2021 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
2022 {
2023 switch (Type)
2024 {
2025 case 1: SegType = "TSS16(Avl)"; break;
2026 case 2: SegType = "LDT"; break;
2027 case 3: SegType = "TSS16(Busy)"; break;
2028 case 4: SegType = "CALLGATE16"; break;
2029 case 5: SegType = "TASKGATE"; break;
2030 case 6: SegType = "INTGATE16"; break;
2031 case 7: SegType = "TRAPGATE16"; break;
2032 case 9: SegType = "TSS32(Avl)"; break;
2033 case 11: SegType = "TSS32(Busy)"; break;
2034 case 12: SegType = "CALLGATE32"; break;
2035 case 14: SegType = "INTGATE32"; break;
2036 case 15: SegType = "INTGATE32"; break;
2037 default: SegType = "UNKNOWN"; break;
2038 }
2039
2040 if (!(Type >= 1 && Type <= 3) &&
2041 Type != 9 && Type != 11)
2042 {
2043 SegBase = 0;
2044 SegLimit = 0;
2045 }
2046 }
2047 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
2048 {
2049 if ((SegDesc[1] & (1 << 22)) != 0)
2050 SegType = "DATA32";
2051 else
2052 SegType = "DATA16";
2053 }
2054 else /* Code segment */
2055 {
2056 if ((SegDesc[1] & (1 << 22)) != 0)
2057 SegType = "CODE32";
2058 else
2059 SegType = "CODE16";
2060 }
2061
2062 if ((SegDesc[1] & (1 << 15)) == 0) /* not present */
2063 {
2064 KdbpPrint(" %03d 0x%04x %-11s [NP] [NP] %02d NP\n",
2065 i / 8, i | Dpl | ul, SegType, Dpl);
2066 }
2067 else
2068 {
2069 KdbpPrint(" %03d 0x%04x %-11s 0x%08x 0x%08x %02d ",
2070 i / 8, i | Dpl | ul, SegType, SegBase, SegLimit, Dpl);
2071
2072 if ((SegDesc[1] & (1 << 12)) == 0) /* System segment */
2073 {
2074 /* FIXME: Display system segment */
2075 }
2076 else if ((SegDesc[1] & (1 << 11)) == 0) /* Data segment */
2077 {
2078 if ((SegDesc[1] & (1 << 10)) != 0) /* Expand-down */
2079 KdbpPrint(" E");
2080
2081 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/W" : " R");
2082
2083 if ((SegDesc[1] & (1 << 8)) != 0)
2084 KdbpPrint(" A");
2085 }
2086 else /* Code segment */
2087 {
2088 if ((SegDesc[1] & (1 << 10)) != 0) /* Conforming */
2089 KdbpPrint(" C");
2090
2091 KdbpPrint((SegDesc[1] & (1 << 9)) ? " R/X" : " X");
2092
2093 if ((SegDesc[1] & (1 << 8)) != 0)
2094 KdbpPrint(" A");
2095 }
2096
2097 if ((SegDesc[1] & (1 << 20)) != 0)
2098 KdbpPrint(" AVL");
2099
2100 KdbpPrint("\n");
2101 }
2102 }
2103 }
2104
2105 return TRUE;
2106 }
2107
2108 /*!\brief Displays the KPCR
2109 */
2110 static BOOLEAN
2111 KdbpCmdPcr(
2112 ULONG Argc,
2113 PCHAR Argv[])
2114 {
2115 PKIPCR Pcr = (PKIPCR)KeGetPcr();
2116
2117 KdbpPrint("Current PCR is at 0x%08x.\n", (INT)Pcr);
2118 KdbpPrint(" Tib.ExceptionList: 0x%08x\n"
2119 " Tib.StackBase: 0x%08x\n"
2120 " Tib.StackLimit: 0x%08x\n"
2121 " Tib.SubSystemTib: 0x%08x\n"
2122 " Tib.FiberData/Version: 0x%08x\n"
2123 " Tib.ArbitraryUserPointer: 0x%08x\n"
2124 " Tib.Self: 0x%08x\n"
2125 " SelfPcr: 0x%08x\n"
2126 " PCRCB: 0x%08x\n"
2127 " Irql: 0x%02x\n"
2128 " IRR: 0x%08x\n"
2129 " IrrActive: 0x%08x\n"
2130 " IDR: 0x%08x\n"
2131 " KdVersionBlock: 0x%08x\n"
2132 " IDT: 0x%08x\n"
2133 " GDT: 0x%08x\n"
2134 " TSS: 0x%08x\n"
2135 " MajorVersion: 0x%04x\n"
2136 " MinorVersion: 0x%04x\n"
2137 " SetMember: 0x%08x\n"
2138 " StallScaleFactor: 0x%08x\n"
2139 " Number: 0x%02x\n"
2140 " L2CacheAssociativity: 0x%02x\n"
2141 " VdmAlert: 0x%08x\n"
2142 " L2CacheSize: 0x%08x\n"
2143 " InterruptMode: 0x%08x\n",
2144 Pcr->NtTib.ExceptionList, Pcr->NtTib.StackBase, Pcr->NtTib.StackLimit,
2145 Pcr->NtTib.SubSystemTib, Pcr->NtTib.FiberData, Pcr->NtTib.ArbitraryUserPointer,
2146 Pcr->NtTib.Self, Pcr->SelfPcr, Pcr->Prcb, Pcr->Irql, Pcr->IRR, Pcr->IrrActive,
2147 Pcr->IDR, Pcr->KdVersionBlock, Pcr->IDT, Pcr->GDT, Pcr->TSS,
2148 Pcr->MajorVersion, Pcr->MinorVersion, Pcr->SetMember, Pcr->StallScaleFactor,
2149 Pcr->Number, Pcr->SecondLevelCacheAssociativity,
2150 Pcr->VdmAlert, Pcr->SecondLevelCacheSize, Pcr->InterruptMode);
2151
2152 return TRUE;
2153 }
2154
2155 /*!\brief Displays the TSS
2156 */
2157 static BOOLEAN
2158 KdbpCmdTss(
2159 ULONG Argc,
2160 PCHAR Argv[])
2161 {
2162 KTSS *Tss = KeGetPcr()->TSS;
2163
2164 KdbpPrint("Current TSS is at 0x%08x.\n", (INT)Tss);
2165 KdbpPrint(" Eip: 0x%08x\n"
2166 " Es: 0x%04x\n"
2167 " Cs: 0x%04x\n"
2168 " Ss: 0x%04x\n"
2169 " Ds: 0x%04x\n"
2170 " Fs: 0x%04x\n"
2171 " Gs: 0x%04x\n"
2172 " IoMapBase: 0x%04x\n",
2173 Tss->Eip, Tss->Es, Tss->Cs, Tss->Ds, Tss->Fs, Tss->Gs, Tss->IoMapBase);
2174
2175 return TRUE;
2176 }
2177
2178 /*!\brief Bugchecks the system.
2179 */
2180 static BOOLEAN
2181 KdbpCmdBugCheck(
2182 ULONG Argc,
2183 PCHAR Argv[])
2184 {
2185 /* Set the flag and quit looping */
2186 KdbpBugCheckRequested = TRUE;
2187
2188 return FALSE;
2189 }
2190
2191 static BOOLEAN
2192 KdbpCmdReboot(
2193 ULONG Argc,
2194 PCHAR Argv[])
2195 {
2196 /* Reboot immediately (we do not return) */
2197 HalReturnToFirmware(HalRebootRoutine);
2198 return FALSE;
2199 }
2200
2201
2202 VOID
2203 KdbpPager(
2204 IN PCHAR Buffer,
2205 IN ULONG BufLength);
2206
2207 /*!\brief Display debug messages on screen, with paging.
2208 *
2209 * Keys for per-page view: Home, End, PageUp, Arrow Up, PageDown,
2210 * all others are as PageDown.
2211 */
2212 static BOOLEAN
2213 KdbpCmdDmesg(
2214 ULONG Argc,
2215 PCHAR Argv[])
2216 {
2217 ULONG beg, end;
2218
2219 KdbpIsInDmesgMode = TRUE; /* Toggle logging flag */
2220 if (!KdpDmesgBuffer)
2221 {
2222 KdbpPrint("Dmesg: error, buffer is not allocated! /DEBUGPORT=SCREEN kernel param required for dmesg.\n");
2223 return TRUE;
2224 }
2225
2226 KdbpPrint("*** Dmesg *** TotalWritten=%lu, BufferSize=%lu, CurrentPosition=%lu\n",
2227 KdbDmesgTotalWritten, KdpDmesgBufferSize, KdpDmesgCurrentPosition);
2228
2229 // Pass data to the pager:
2230 end = KdpDmesgCurrentPosition;
2231 beg = (end + KdpDmesgFreeBytes) % KdpDmesgBufferSize;
2232
2233 // no roll-overs, and overwritten=lost bytes
2234 if (KdbDmesgTotalWritten <= KdpDmesgBufferSize)
2235 {
2236 // show buffer (KdpDmesgBuffer + beg, num)
2237 KdbpPager(KdpDmesgBuffer, KdpDmesgCurrentPosition);
2238 }
2239 else
2240 {
2241 // show 2 buffers: (KdpDmesgBuffer + beg, KdpDmesgBufferSize - beg)
2242 // and: (KdpDmesgBuffer, end)
2243 KdbpPager(KdpDmesgBuffer + beg, KdpDmesgBufferSize - beg);
2244 KdbpPrint("*** Dmesg: buffer rollup ***\n");
2245 KdbpPager(KdpDmesgBuffer, end);
2246 }
2247 KdbpPrint("*** Dmesg: end of output ***\n");
2248
2249 KdbpIsInDmesgMode = FALSE; /* Toggle logging flag */
2250
2251 return TRUE;
2252 }
2253
2254 /*!\brief Sets or displays a config variables value.
2255 */
2256 static BOOLEAN
2257 KdbpCmdSet(
2258 ULONG Argc,
2259 PCHAR Argv[])
2260 {
2261 LONG l;
2262 BOOLEAN First;
2263 PCHAR pend = 0;
2264 KDB_ENTER_CONDITION ConditionFirst = KdbDoNotEnter;
2265 KDB_ENTER_CONDITION ConditionLast = KdbDoNotEnter;
2266
2267 static const PCHAR ExceptionNames[21] =
2268 {
2269 "ZERODEVIDE", "DEBUGTRAP", "NMI", "INT3", "OVERFLOW", "BOUND", "INVALIDOP",
2270 "NOMATHCOP", "DOUBLEFAULT", "RESERVED(9)", "INVALIDTSS", "SEGMENTNOTPRESENT",
2271 "STACKFAULT", "GPF", "PAGEFAULT", "RESERVED(15)", "MATHFAULT", "ALIGNMENTCHECK",
2272 "MACHINECHECK", "SIMDFAULT", "OTHERS"
2273 };
2274
2275 if (Argc == 1)
2276 {
2277 KdbpPrint("Available settings:\n");
2278 KdbpPrint(" syntax [intel|at&t]\n");
2279 KdbpPrint(" condition [exception|*] [first|last] [never|always|kmode|umode]\n");
2280 KdbpPrint(" break_on_module_load [true|false]\n");
2281 }
2282 else if (strcmp(Argv[1], "syntax") == 0)
2283 {
2284 if (Argc == 2)
2285 {
2286 KdbpPrint("syntax = %s\n", KdbUseIntelSyntax ? "intel" : "at&t");
2287 }
2288 else if (Argc >= 3)
2289 {
2290 if (_stricmp(Argv[2], "intel") == 0)
2291 KdbUseIntelSyntax = TRUE;
2292 else if (_stricmp(Argv[2], "at&t") == 0)
2293 KdbUseIntelSyntax = FALSE;
2294 else
2295 KdbpPrint("Unknown syntax '%s'.\n", Argv[2]);
2296 }
2297 }
2298 else if (strcmp(Argv[1], "condition") == 0)
2299 {
2300 if (Argc == 2)
2301 {
2302 KdbpPrint("Conditions: (First) (Last)\n");
2303 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames) - 1; l++)
2304 {
2305 if (!ExceptionNames[l])
2306 continue;
2307
2308 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
2309 ASSERT(0);
2310
2311 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
2312 ASSERT(0);
2313
2314 KdbpPrint(" #%02d %-20s %-8s %-8s\n", l, ExceptionNames[l],
2315 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2316 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2317 }
2318
2319 ASSERT(l == (RTL_NUMBER_OF(ExceptionNames) - 1));
2320 KdbpPrint(" %-20s %-8s %-8s\n", ExceptionNames[l],
2321 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2322 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2323 }
2324 else
2325 {
2326 if (Argc >= 5 && strcmp(Argv[2], "*") == 0) /* Allow * only when setting condition */
2327 {
2328 l = -1;
2329 }
2330 else
2331 {
2332 l = strtoul(Argv[2], &pend, 0);
2333
2334 if (Argv[2] == pend)
2335 {
2336 for (l = 0; l < RTL_NUMBER_OF(ExceptionNames); l++)
2337 {
2338 if (!ExceptionNames[l])
2339 continue;
2340
2341 if (_stricmp(ExceptionNames[l], Argv[2]) == 0)
2342 break;
2343 }
2344 }
2345
2346 if (l >= RTL_NUMBER_OF(ExceptionNames))
2347 {
2348 KdbpPrint("Unknown exception '%s'.\n", Argv[2]);
2349 return TRUE;
2350 }
2351 }
2352
2353 if (Argc > 4)
2354 {
2355 if (_stricmp(Argv[3], "first") == 0)
2356 First = TRUE;
2357 else if (_stricmp(Argv[3], "last") == 0)
2358 First = FALSE;
2359 else
2360 {
2361 KdbpPrint("set condition: second argument must be 'first' or 'last'\n");
2362 return TRUE;
2363 }
2364
2365 if (_stricmp(Argv[4], "never") == 0)
2366 ConditionFirst = KdbDoNotEnter;
2367 else if (_stricmp(Argv[4], "always") == 0)
2368 ConditionFirst = KdbEnterAlways;
2369 else if (_stricmp(Argv[4], "umode") == 0)
2370 ConditionFirst = KdbEnterFromUmode;
2371 else if (_stricmp(Argv[4], "kmode") == 0)
2372 ConditionFirst = KdbEnterFromKmode;
2373 else
2374 {
2375 KdbpPrint("set condition: third argument must be 'never', 'always', 'umode' or 'kmode'\n");
2376 return TRUE;
2377 }
2378
2379 if (!KdbpSetEnterCondition(l, First, ConditionFirst))
2380 {
2381 if (l >= 0)
2382 KdbpPrint("Couldn't change condition for exception #%02d\n", l);
2383 else
2384 KdbpPrint("Couldn't change condition for all exceptions\n", l);
2385 }
2386 }
2387 else /* Argc >= 3 */
2388 {
2389 if (!KdbpGetEnterCondition(l, TRUE, &ConditionFirst))
2390 ASSERT(0);
2391
2392 if (!KdbpGetEnterCondition(l, FALSE, &ConditionLast))
2393 ASSERT(0);
2394
2395 if (l < (RTL_NUMBER_OF(ExceptionNames) - 1))
2396 {
2397 KdbpPrint("Condition for exception #%02d (%s): FirstChance %s LastChance %s\n",
2398 l, ExceptionNames[l],
2399 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2400 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2401 }
2402 else
2403 {
2404 KdbpPrint("Condition for all other exceptions: FirstChance %s LastChance %s\n",
2405 KDB_ENTER_CONDITION_TO_STRING(ConditionFirst),
2406 KDB_ENTER_CONDITION_TO_STRING(ConditionLast));
2407 }
2408 }
2409 }
2410 }
2411 else if (strcmp(Argv[1], "break_on_module_load") == 0)
2412 {
2413 if (Argc == 2)
2414 KdbpPrint("break_on_module_load = %s\n", KdbBreakOnModuleLoad ? "enabled" : "disabled");
2415 else if (Argc >= 3)
2416 {
2417 if (_stricmp(Argv[2], "enable") == 0 || _stricmp(Argv[2], "enabled") == 0 || _stricmp(Argv[2], "true") == 0)
2418 KdbBreakOnModuleLoad = TRUE;
2419 else if (_stricmp(Argv[2], "disable") == 0 || _stricmp(Argv[2], "disabled") == 0 || _stricmp(Argv[2], "false") == 0)
2420 KdbBreakOnModuleLoad = FALSE;
2421 else
2422 KdbpPrint("Unknown setting '%s'.\n", Argv[2]);
2423 }
2424 }
2425 else
2426 {
2427 KdbpPrint("Unknown setting '%s'.\n", Argv[1]);
2428 }
2429
2430 return TRUE;
2431 }
2432
2433 /*!\brief Displays help screen.
2434 */
2435 static BOOLEAN
2436 KdbpCmdHelp(
2437 ULONG Argc,
2438 PCHAR Argv[])
2439 {
2440 ULONG i;
2441
2442 KdbpPrint("Kernel debugger commands:\n");
2443 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
2444 {
2445 if (!KdbDebuggerCommands[i].Syntax) /* Command group */
2446 {
2447 if (i > 0)
2448 KdbpPrint("\n");
2449
2450 KdbpPrint("\x1b[7m* %s:\x1b[0m\n", KdbDebuggerCommands[i].Help);
2451 continue;
2452 }
2453
2454 KdbpPrint(" %-20s - %s\n",
2455 KdbDebuggerCommands[i].Syntax,
2456 KdbDebuggerCommands[i].Help);
2457 }
2458
2459 return TRUE;
2460 }
2461
2462 /*!\brief Prints the given string with printf-like formatting.
2463 *
2464 * \param Format Format of the string/arguments.
2465 * \param ... Variable number of arguments matching the format specified in \a Format.
2466 *
2467 * \note Doesn't correctly handle \\t and terminal escape sequences when calculating the
2468 * number of lines required to print a single line from the Buffer in the terminal.
2469 * Prints maximum 4096 chars, because of its buffer size.
2470 */
2471 VOID
2472 KdbpPrint(
2473 IN PCHAR Format,
2474 IN ... OPTIONAL)
2475 {
2476 static CHAR Buffer[4096];
2477 static BOOLEAN TerminalInitialized = FALSE;
2478 static BOOLEAN TerminalConnected = FALSE;
2479 static BOOLEAN TerminalReportsSize = TRUE;
2480 CHAR c = '\0';
2481 PCHAR p, p2;
2482 ULONG Length;
2483 ULONG i, j;
2484 LONG RowsPrintedByTerminal;
2485 ULONG ScanCode;
2486 va_list ap;
2487
2488 /* Check if the user has aborted output of the current command */
2489 if (KdbOutputAborted)
2490 return;
2491
2492 /* Initialize the terminal */
2493 if (!TerminalInitialized)
2494 {
2495 DbgPrint("\x1b[7h"); /* Enable linewrap */
2496
2497 /* Query terminal type */
2498 /*DbgPrint("\x1b[Z");*/
2499 DbgPrint("\x05");
2500
2501 TerminalInitialized = TRUE;
2502 Length = 0;
2503 KeStallExecutionProcessor(100000);
2504
2505 for (;;)
2506 {
2507 c = KdbpTryGetCharSerial(5000);
2508 if (c == -1)
2509 break;
2510
2511 Buffer[Length++] = c;
2512 if (Length >= (sizeof (Buffer) - 1))
2513 break;
2514 }
2515
2516 Buffer[Length] = '\0';
2517 if (Length > 0)
2518 TerminalConnected = TRUE;
2519 }
2520
2521 /* Get number of rows and columns in terminal */
2522 if ((KdbNumberOfRowsTerminal < 0) || (KdbNumberOfColsTerminal < 0) ||
2523 (KdbNumberOfRowsPrinted) == 0) /* Refresh terminal size each time when number of rows printed is 0 */
2524 {
2525 if ((KdbDebugState & KD_DEBUG_KDSERIAL) && TerminalConnected && TerminalReportsSize)
2526 {
2527 /* Try to query number of rows from terminal. A reply looks like "\x1b[8;24;80t" */
2528 TerminalReportsSize = FALSE;
2529 KeStallExecutionProcessor(100000);
2530 DbgPrint("\x1b[18t");
2531 c = KdbpTryGetCharSerial(5000);
2532
2533 if (c == KEY_ESC)
2534 {
2535 c = KdbpTryGetCharSerial(5000);
2536 if (c == '[')
2537 {
2538 Length = 0;
2539
2540 for (;;)
2541 {
2542 c = KdbpTryGetCharSerial(5000);
2543 if (c == -1)
2544 break;
2545
2546 Buffer[Length++] = c;
2547 if (isalpha(c) || Length >= (sizeof (Buffer) - 1))
2548 break;
2549 }
2550
2551 Buffer[Length] = '\0';
2552 if (Buffer[0] == '8' && Buffer[1] == ';')
2553 {
2554 for (i = 2; (i < Length) && (Buffer[i] != ';'); i++);
2555
2556 if (Buffer[i] == ';')
2557 {
2558 Buffer[i++] = '\0';
2559
2560 /* Number of rows is now at Buffer + 2 and number of cols at Buffer + i */
2561 KdbNumberOfRowsTerminal = strtoul(Buffer + 2, NULL, 0);
2562 KdbNumberOfColsTerminal = strtoul(Buffer + i, NULL, 0);
2563 TerminalReportsSize = TRUE;
2564 }
2565 }
2566 }
2567 /* Clear further characters */
2568 while ((c = KdbpTryGetCharSerial(5000)) != -1);
2569 }
2570 }
2571
2572 if (KdbNumberOfRowsTerminal <= 0)
2573 {
2574 /* Set number of rows to the default. */
2575 KdbNumberOfRowsTerminal = 23; //24; //Mna.: 23 for SCREEN debugport
2576 }
2577 else if (KdbNumberOfColsTerminal <= 0)
2578 {
2579 /* Set number of cols to the default. */
2580 KdbNumberOfColsTerminal = 75; //80; //Mna.: 75 for SCREEN debugport
2581 }
2582 }
2583
2584 /* Get the string */
2585 va_start(ap, Format);
2586 Length = _vsnprintf(Buffer, sizeof (Buffer) - 1, Format, ap);
2587 Buffer[Length] = '\0';
2588 va_end(ap);
2589
2590 p = Buffer;
2591 while (p[0] != '\0')
2592 {
2593 i = strcspn(p, "\n");
2594
2595 /* Calculate the number of lines which will be printed in the terminal
2596 * when outputting the current line
2597 */
2598 if (i > 0)
2599 RowsPrintedByTerminal = (i + KdbNumberOfColsPrinted - 1) / KdbNumberOfColsTerminal;
2600 else
2601 RowsPrintedByTerminal = 0;
2602
2603 if (p[i] == '\n')
2604 RowsPrintedByTerminal++;
2605
2606 /*DbgPrint("!%d!%d!%d!%d!", KdbNumberOfRowsPrinted, KdbNumberOfColsPrinted, i, RowsPrintedByTerminal);*/
2607
2608 /* Display a prompt if we printed one screen full of text */
2609 if (KdbNumberOfRowsTerminal > 0 &&
2610 (LONG)(KdbNumberOfRowsPrinted + RowsPrintedByTerminal) >= KdbNumberOfRowsTerminal)
2611 {
2612 KdbRepeatLastCommand = FALSE;
2613
2614 if (KdbNumberOfColsPrinted > 0)
2615 DbgPrint("\n");
2616
2617 DbgPrint("--- Press q to abort, any other key to continue ---");
2618 RowsPrintedByTerminal++; /* added by Mna. */
2619
2620 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2621 c = KdbpGetCharSerial();
2622 else
2623 c = KdbpGetCharKeyboard(&ScanCode);
2624
2625 if (c == '\r')
2626 {
2627 /* Try to read '\n' which might follow '\r' - if \n is not received here
2628 * it will be interpreted as "return" when the next command should be read.
2629 */
2630 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2631 c = KdbpTryGetCharSerial(5);
2632 else
2633 c = KdbpTryGetCharKeyboard(&ScanCode, 5);
2634 }
2635
2636 DbgPrint("\n");
2637 if (c == 'q')
2638 {
2639 KdbOutputAborted = TRUE;
2640 return;
2641 }
2642
2643 KdbNumberOfRowsPrinted = 0;
2644 KdbNumberOfColsPrinted = 0;
2645 }
2646
2647 /* Insert a NUL after the line and print only the current line. */
2648 if (p[i] == '\n' && p[i + 1] != '\0')
2649 {
2650 c = p[i + 1];
2651 p[i + 1] = '\0';
2652 }
2653 else
2654 {
2655 c = '\0';
2656 }
2657
2658 /* Remove escape sequences from the line if there's no terminal connected */
2659 if (!TerminalConnected)
2660 {
2661 while ((p2 = strrchr(p, '\x1b'))) /* Look for escape character */
2662 {
2663 if (p2[1] == '[')
2664 {
2665 j = 2;
2666 while (!isalpha(p2[j++]));
2667 strcpy(p2, p2 + j);
2668 }
2669 else
2670 {
2671 strcpy(p2, p2 + 1);
2672 }
2673 }
2674 }
2675
2676 DbgPrint("%s", p);
2677
2678 if (c != '\0')
2679 p[i + 1] = c;
2680
2681 /* Set p to the start of the next line and
2682 * remember the number of rows/cols printed
2683 */
2684 p += i;
2685 if (p[0] == '\n')
2686 {
2687 p++;
2688 KdbNumberOfColsPrinted = 0;
2689 }
2690 else
2691 {
2692 ASSERT(p[0] == '\0');
2693 KdbNumberOfColsPrinted += i;
2694 }
2695
2696 KdbNumberOfRowsPrinted += RowsPrintedByTerminal;
2697 }
2698 }
2699
2700 /** memrchr(), explicitly defined, since was absent in MinGW of RosBE. */
2701 /*
2702 * Reverse memchr()
2703 * Find the last occurrence of 'c' in the buffer 's' of size 'n'.
2704 */
2705 void *
2706 memrchr(const void *s, int c, size_t n)
2707 {
2708 const unsigned char *cp;
2709
2710 if (n != 0)
2711 {
2712 cp = (unsigned char *)s + n;
2713 do
2714 {
2715 if (*(--cp) == (unsigned char)c)
2716 return (void *)cp;
2717 } while (--n != 0);
2718 }
2719 return NULL;
2720 }
2721
2722 /*!\brief Calculate pointer position for N lines upper of current position.
2723 *
2724 * \param Buffer Characters buffer to operate on.
2725 * \param BufLength Buffer size.
2726 *
2727 * \note Calculate pointer position for N lines upper of current displaying
2728 * position within the given buffer.
2729 *
2730 * Used by KdbpPager().
2731 * Now N lines count is hardcoded to KdbNumberOfRowsTerminal.
2732 */
2733 PCHAR
2734 CountOnePageUp(PCHAR Buffer, ULONG BufLength, PCHAR pCurPos)
2735 {
2736 PCHAR p;
2737 // p0 is initial guess of Page Start
2738 ULONG p0len = KdbNumberOfRowsTerminal * KdbNumberOfColsTerminal;
2739 PCHAR p0 = pCurPos - p0len;
2740 PCHAR prev_p = p0, p1;
2741 ULONG j;
2742
2743 if (pCurPos < Buffer)
2744 pCurPos = Buffer;
2745 ASSERT(pCurPos <= Buffer + BufLength);
2746
2747 p = memrchr(p0, '\n', p0len);
2748 if (NULL == p)
2749 p = p0;
2750 for (j = KdbNumberOfRowsTerminal; j--; )
2751 {
2752 int linesCnt;
2753 p1 = memrchr(p0, '\n', p-p0);
2754 prev_p = p;
2755 p = p1;
2756 if (NULL == p)
2757 {
2758 p = prev_p;
2759 if (NULL == p)
2760 p = p0;
2761 break;
2762 }
2763 linesCnt = (KdbNumberOfColsTerminal+prev_p-p-2) / KdbNumberOfColsTerminal;
2764 if (linesCnt > 1)
2765 j -= linesCnt-1;
2766 }
2767
2768 ASSERT(p != 0);
2769 ++p;
2770 return p;
2771 }
2772
2773 /*!\brief Prints the given string with, page by page.
2774 *
2775 * \param Buffer Characters buffer to print.
2776 * \param BufferLen Buffer size.
2777 *
2778 * \note Doesn't correctly handle \\t and terminal escape sequences when calculating the
2779 * number of lines required to print a single line from the Buffer in the terminal.
2780 * Maximum length of buffer is limited only by memory size.
2781 *
2782 * Note: BufLength should be greater then (KdbNumberOfRowsTerminal * KdbNumberOfColsTerminal).
2783 *
2784 */
2785 VOID
2786 KdbpPager(
2787 IN PCHAR Buffer,
2788 IN ULONG BufLength)
2789 {
2790 static CHAR InBuffer[4096];
2791 static BOOLEAN TerminalInitialized = FALSE;
2792 static BOOLEAN TerminalConnected = FALSE;
2793 static BOOLEAN TerminalReportsSize = TRUE;
2794 CHAR c = '\0';
2795 PCHAR p, p2;
2796 ULONG Length;
2797 ULONG i, j;
2798 LONG RowsPrintedByTerminal;
2799 ULONG ScanCode;
2800
2801 if( BufLength == 0)
2802 return;
2803
2804 /* Check if the user has aborted output of the current command */
2805 if (KdbOutputAborted)
2806 return;
2807
2808 /* Initialize the terminal */
2809 if (!TerminalInitialized)
2810 {
2811 DbgPrint("\x1b[7h"); /* Enable linewrap */
2812
2813 /* Query terminal type */
2814 /*DbgPrint("\x1b[Z");*/
2815 DbgPrint("\x05");
2816
2817 TerminalInitialized = TRUE;
2818 Length = 0;
2819 KeStallExecutionProcessor(100000);
2820
2821 for (;;)
2822 {
2823 c = KdbpTryGetCharSerial(5000);
2824 if (c == -1)
2825 break;
2826
2827 InBuffer[Length++] = c;
2828 if (Length >= (sizeof (InBuffer) - 1))
2829 break;
2830 }
2831
2832 InBuffer[Length] = '\0';
2833 if (Length > 0)
2834 TerminalConnected = TRUE;
2835 }
2836
2837 /* Get number of rows and columns in terminal */
2838 if ((KdbNumberOfRowsTerminal < 0) || (KdbNumberOfColsTerminal < 0) ||
2839 (KdbNumberOfRowsPrinted) == 0) /* Refresh terminal size each time when number of rows printed is 0 */
2840 {
2841 if ((KdbDebugState & KD_DEBUG_KDSERIAL) && TerminalConnected && TerminalReportsSize)
2842 {
2843 /* Try to query number of rows from terminal. A reply looks like "\x1b[8;24;80t" */
2844 TerminalReportsSize = FALSE;
2845 KeStallExecutionProcessor(100000);
2846 DbgPrint("\x1b[18t");
2847 c = KdbpTryGetCharSerial(5000);
2848
2849 if (c == KEY_ESC)
2850 {
2851 c = KdbpTryGetCharSerial(5000);
2852 if (c == '[')
2853 {
2854 Length = 0;
2855
2856 for (;;)
2857 {
2858 c = KdbpTryGetCharSerial(5000);
2859 if (c == -1)
2860 break;
2861
2862 InBuffer[Length++] = c;
2863 if (isalpha(c) || Length >= (sizeof (InBuffer) - 1))
2864 break;
2865 }
2866
2867 InBuffer[Length] = '\0';
2868 if (InBuffer[0] == '8' && InBuffer[1] == ';')
2869 {
2870 for (i = 2; (i < Length) && (InBuffer[i] != ';'); i++);
2871
2872 if (Buffer[i] == ';')
2873 {
2874 Buffer[i++] = '\0';
2875
2876 /* Number of rows is now at Buffer + 2 and number of cols at Buffer + i */
2877 KdbNumberOfRowsTerminal = strtoul(InBuffer + 2, NULL, 0);
2878 KdbNumberOfColsTerminal = strtoul(InBuffer + i, NULL, 0);
2879 TerminalReportsSize = TRUE;
2880 }
2881 }
2882 }
2883 /* Clear further characters */
2884 while ((c = KdbpTryGetCharSerial(5000)) != -1);
2885 }
2886 }
2887
2888 if (KdbNumberOfRowsTerminal <= 0)
2889 {
2890 /* Set number of rows to the default. */
2891 KdbNumberOfRowsTerminal = 24;
2892 }
2893 else if (KdbNumberOfColsTerminal <= 0)
2894 {
2895 /* Set number of cols to the default. */
2896 KdbNumberOfColsTerminal = 80;
2897 }
2898 }
2899
2900 /* Get the string */
2901 p = Buffer;
2902
2903 while (p[0] != '\0')
2904 {
2905 if ( p > Buffer+BufLength)
2906 {
2907 DbgPrint("Dmesg: error, p > Buffer+BufLength,d=%d", p - (Buffer+BufLength));
2908 return;
2909 }
2910 i = strcspn(p, "\n");
2911
2912 // Are we out of buffer?
2913 if (p + i > Buffer + BufLength)
2914 // Leaving pager function:
2915 break;
2916
2917 /* Calculate the number of lines which will be printed in the terminal
2918 * when outputting the current line
2919 */
2920 if (i > 0)
2921 RowsPrintedByTerminal = (i + KdbNumberOfColsPrinted - 1) / KdbNumberOfColsTerminal;
2922 else
2923 RowsPrintedByTerminal = 0;
2924
2925 if (p[i] == '\n')
2926 RowsPrintedByTerminal++;
2927
2928 /*DbgPrint("!%d!%d!%d!%d!", KdbNumberOfRowsPrinted, KdbNumberOfColsPrinted, i, RowsPrintedByTerminal);*/
2929
2930 /* Display a prompt if we printed one screen full of text */
2931 if (KdbNumberOfRowsTerminal > 0 &&
2932 (LONG)(KdbNumberOfRowsPrinted + RowsPrintedByTerminal) >= KdbNumberOfRowsTerminal)
2933 {
2934 KdbRepeatLastCommand = FALSE;
2935
2936 if (KdbNumberOfColsPrinted > 0)
2937 DbgPrint("\n");
2938
2939 DbgPrint("--- Press q to abort, e/End,h/Home,u/PgUp, other key/PgDn ---");
2940 RowsPrintedByTerminal++;
2941
2942 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2943 c = KdbpGetCharSerial();
2944 else
2945 c = KdbpGetCharKeyboard(&ScanCode);
2946
2947 if (c == '\r')
2948 {
2949 /* Try to read '\n' which might follow '\r' - if \n is not received here
2950 * it will be interpreted as "return" when the next command should be read.
2951 */
2952 if (KdbDebugState & KD_DEBUG_KDSERIAL)
2953 c = KdbpTryGetCharSerial(5);
2954 else
2955 c = KdbpTryGetCharKeyboard(&ScanCode, 5);
2956 }
2957
2958 //DbgPrint("\n"); //Consize version: don't show pressed key
2959 DbgPrint(" '%c'/scan=%04x\n", c, ScanCode); // Shows pressed key
2960
2961 if (c == 'q')
2962 {
2963 KdbOutputAborted = TRUE;
2964 return;
2965 }
2966 if ( ScanCode == KEYSC_END || c=='e')
2967 {
2968 PCHAR pBufEnd = Buffer + BufLength;
2969 p = CountOnePageUp(Buffer, BufLength, pBufEnd);
2970 i = strcspn(p, "\n");
2971 }
2972 else if (ScanCode == KEYSC_PAGEUP || c=='u')
2973 {
2974 p = CountOnePageUp(Buffer, BufLength, p);
2975 i = strcspn(p, "\n");
2976 }
2977 else if (ScanCode == KEYSC_HOME || c=='h')
2978 {
2979 p = Buffer;
2980 i = strcspn(p, "\n");
2981 }
2982 else if (ScanCode == KEYSC_ARROWUP)
2983 {
2984 p = CountOnePageUp(Buffer, BufLength, p);
2985 i = strcspn(p, "\n");
2986 }
2987
2988 KdbNumberOfRowsPrinted = 0;
2989 KdbNumberOfColsPrinted = 0;
2990 }
2991
2992 /* Insert a NUL after the line and print only the current line. */
2993 if (p[i] == '\n' && p[i + 1] != '\0')
2994 {
2995 c = p[i + 1];
2996 p[i + 1] = '\0';
2997 }
2998 else
2999 {
3000 c = '\0';
3001 }
3002
3003 /* Remove escape sequences from the line if there's no terminal connected */
3004 if (!TerminalConnected)
3005 {
3006 while ((p2 = strrchr(p, '\x1b'))) /* Look for escape character */
3007 {
3008 if (p2[1] == '[')
3009 {
3010 j = 2;
3011 while (!isalpha(p2[j++]));
3012 strcpy(p2, p2 + j);
3013 }
3014 else
3015 {
3016 strcpy(p2, p2 + 1);
3017 }
3018 }
3019 }
3020
3021 // The main printing of the current line:
3022 DbgPrint(p);
3023
3024 // restore not null char with saved:
3025 if (c != '\0')
3026 p[i + 1] = c;
3027
3028 /* Set p to the start of the next line and
3029 * remember the number of rows/cols printed
3030 */
3031 p += i;
3032 if (p[0] == '\n')
3033 {
3034 p++;
3035 KdbNumberOfColsPrinted = 0;
3036 }
3037 else
3038 {
3039 ASSERT(p[0] == '\0');
3040 KdbNumberOfColsPrinted += i;
3041 }
3042
3043 KdbNumberOfRowsPrinted += RowsPrintedByTerminal;
3044 }
3045 }
3046
3047 /*!\brief Appends a command to the command history
3048 *
3049 * \param Command Pointer to the command to append to the history.
3050 */
3051 static VOID
3052 KdbpCommandHistoryAppend(
3053 IN PCHAR Command)
3054 {
3055 ULONG Length1 = strlen(Command) + 1;
3056 ULONG Length2 = 0;
3057 INT i;
3058 PCHAR Buffer;
3059
3060 ASSERT(Length1 <= RTL_NUMBER_OF(KdbCommandHistoryBuffer));
3061
3062 if (Length1 <= 1 ||
3063 (KdbCommandHistory[KdbCommandHistoryIndex] &&
3064 strcmp(KdbCommandHistory[KdbCommandHistoryIndex], Command) == 0))
3065 {
3066 return;
3067 }
3068
3069 /* Calculate Length1 and Length2 */
3070 Buffer = KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex;
3071 KdbCommandHistoryBufferIndex += Length1;
3072 if (KdbCommandHistoryBufferIndex >= (LONG)RTL_NUMBER_OF(KdbCommandHistoryBuffer))
3073 {
3074 KdbCommandHistoryBufferIndex -= RTL_NUMBER_OF(KdbCommandHistoryBuffer);
3075 Length2 = KdbCommandHistoryBufferIndex;
3076 Length1 -= Length2;
3077 }
3078
3079 /* Remove previous commands until there is enough space to append the new command */
3080 for (i = KdbCommandHistoryIndex; KdbCommandHistory[i];)
3081 {
3082 if ((Length2 > 0 &&
3083 (KdbCommandHistory[i] >= Buffer ||
3084 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))) ||
3085 (Length2 <= 0 &&
3086 (KdbCommandHistory[i] >= Buffer &&
3087 KdbCommandHistory[i] < (KdbCommandHistoryBuffer + KdbCommandHistoryBufferIndex))))
3088 {
3089 KdbCommandHistory[i] = NULL;
3090 }
3091
3092 i--;
3093 if (i < 0)
3094 i = RTL_NUMBER_OF(KdbCommandHistory) - 1;
3095
3096 if (i == KdbCommandHistoryIndex)
3097 break;
3098 }
3099
3100 /* Make sure the new command history entry is free */
3101 KdbCommandHistoryIndex++;
3102 KdbCommandHistoryIndex %= RTL_NUMBER_OF(KdbCommandHistory);
3103 if (KdbCommandHistory[KdbCommandHistoryIndex])
3104 {
3105 KdbCommandHistory[KdbCommandHistoryIndex] = NULL;
3106 }
3107
3108 /* Append command */
3109 KdbCommandHistory[KdbCommandHistoryIndex] = Buffer;
3110 ASSERT((KdbCommandHistory[KdbCommandHistoryIndex] + Length1) <= KdbCommandHistoryBuffer + RTL_NUMBER_OF(KdbCommandHistoryBuffer));
3111 memcpy(KdbCommandHistory[KdbCommandHistoryIndex], Command, Length1);
3112 if (Length2 > 0)
3113 {
3114 memcpy(KdbCommandHistoryBuffer, Command + Length1, Length2);
3115 }
3116 }
3117
3118 /*!\brief Reads a line of user-input.
3119 *
3120 * \param Buffer Buffer to store the input into. Trailing newlines are removed.
3121 * \param Size Size of \a Buffer.
3122 *
3123 * \note Accepts only \n newlines, \r is ignored.
3124 */
3125 static VOID
3126 KdbpReadCommand(
3127 OUT PCHAR Buffer,
3128 IN ULONG Size)
3129 {
3130 CHAR Key;
3131 PCHAR Orig = Buffer;
3132 ULONG ScanCode = 0;
3133 BOOLEAN EchoOn;
3134 static CHAR LastCommand[1024];
3135 static CHAR NextKey = '\0';
3136 INT CmdHistIndex = -1;
3137 INT i;
3138
3139 EchoOn = !((KdbDebugState & KD_DEBUG_KDNOECHO) != 0);
3140
3141 for (;;)
3142 {
3143 if (KdbDebugState & KD_DEBUG_KDSERIAL)
3144 {
3145 Key = (NextKey == '\0') ? KdbpGetCharSerial() : NextKey;
3146 NextKey = '\0';
3147 ScanCode = 0;
3148 if (Key == KEY_ESC) /* ESC */
3149 {
3150 Key = KdbpGetCharSerial();
3151 if (Key == '[')
3152 {
3153 Key = KdbpGetCharSerial();
3154
3155 switch (Key)
3156 {
3157 case 'A':
3158 ScanCode = KEY_SCAN_UP;
3159 break;
3160 case 'B':
3161 ScanCode = KEY_SCAN_DOWN;
3162 break;
3163 case 'C':
3164 break;
3165 case 'D':
3166 break;
3167 }
3168 }
3169 }
3170 }
3171 else
3172 {
3173 ScanCode = 0;
3174 Key = (NextKey == '\0') ? KdbpGetCharKeyboard(&ScanCode) : NextKey;
3175 NextKey = '\0';
3176 }
3177
3178 if ((ULONG)(Buffer - Orig) >= (Size - 1))
3179 {
3180 /* Buffer is full, accept only newlines */
3181 if (Key != '\n')
3182 continue;
3183 }
3184
3185 if (Key == '\r')
3186 {
3187 /* Read the next char - this is to throw away a \n which most clients should
3188 * send after \r.
3189 */
3190 KeStallExecutionProcessor(100000);
3191
3192 if (KdbDebugState & KD_DEBUG_KDSERIAL)
3193 NextKey = KdbpTryGetCharSerial(5);
3194 else
3195 NextKey = KdbpTryGetCharKeyboard(&ScanCode, 5);
3196
3197 if (NextKey == '\n' || NextKey == -1) /* \n or no response at all */
3198 NextKey = '\0';
3199
3200 KdbpPrint("\n");
3201
3202 /*
3203 * Repeat the last command if the user presses enter. Reduces the
3204 * risk of RSI when single-stepping.
3205 */
3206 if (Buffer != Orig)
3207 {
3208 KdbRepeatLastCommand = TRUE;
3209 *Buffer = '\0';
3210 RtlStringCbCopyA(LastCommand, sizeof(LastCommand), Orig);
3211 }
3212 else if (KdbRepeatLastCommand)
3213 RtlStringCbCopyA(Buffer, Size, LastCommand);
3214 else
3215 *Buffer = '\0';
3216
3217 return;
3218 }
3219 else if (Key == KEY_BS || Key == KEY_DEL)
3220 {
3221 if (Buffer > Orig)
3222 {
3223 Buffer--;
3224 *Buffer = 0;
3225
3226 if (EchoOn)
3227 KdbpPrint("%c %c", KEY_BS, KEY_BS);
3228 else
3229 KdbpPrint(" %c", KEY_BS);
3230 }
3231 }
3232 else if (ScanCode == KEY_SCAN_UP)
3233 {
3234 BOOLEAN Print = TRUE;
3235
3236 if (CmdHistIndex < 0)
3237 {
3238 CmdHistIndex = KdbCommandHistoryIndex;
3239 }
3240 else
3241 {
3242 i = CmdHistIndex - 1;
3243
3244 if (i < 0)
3245 CmdHistIndex = RTL_NUMBER_OF(KdbCommandHistory) - 1;
3246
3247 if (KdbCommandHistory[i] && i != KdbCommandHistoryIndex)
3248 CmdHistIndex = i;
3249 else
3250 Print = FALSE;
3251 }
3252
3253 if (Print && KdbCommandHistory[CmdHistIndex])
3254 {
3255 while (Buffer > Orig)
3256 {
3257 Buffer--;
3258 *Buffer = 0;
3259
3260 if (EchoOn)
3261 KdbpPrint("%c %c", KEY_BS, KEY_BS);
3262 else
3263 KdbpPrint(" %c", KEY_BS);
3264 }
3265
3266 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
3267 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
3268 Orig[i] = '\0';
3269 Buffer = Orig + i;
3270 KdbpPrint("%s", Orig);
3271 }
3272 }
3273 else if (ScanCode == KEY_SCAN_DOWN)
3274 {
3275 if (CmdHistIndex > 0 && CmdHistIndex != KdbCommandHistoryIndex)
3276 {
3277 i = CmdHistIndex + 1;
3278 if (i >= (INT)RTL_NUMBER_OF(KdbCommandHistory))
3279 i = 0;
3280
3281 if (KdbCommandHistory[i])
3282 {
3283 CmdHistIndex = i;
3284 while (Buffer > Orig)
3285 {
3286 Buffer--;
3287 *Buffer = 0;
3288
3289 if (EchoOn)
3290 KdbpPrint("%c %c", KEY_BS, KEY_BS);
3291 else
3292 KdbpPrint(" %c", KEY_BS);
3293 }
3294
3295 i = min(strlen(KdbCommandHistory[CmdHistIndex]), Size - 1);
3296 memcpy(Orig, KdbCommandHistory[CmdHistIndex], i);
3297 Orig[i] = '\0';
3298 Buffer = Orig + i;
3299 KdbpPrint("%s", Orig);
3300 }
3301 }
3302 }
3303 else
3304 {
3305 if (EchoOn)
3306 KdbpPrint("%c", Key);
3307
3308 *Buffer = Key;
3309 Buffer++;
3310 }
3311 }
3312 }
3313
3314
3315 BOOLEAN
3316 NTAPI
3317 KdbRegisterCliCallback(
3318 PVOID Callback,
3319 BOOLEAN Deregister)
3320 {
3321 ULONG i;
3322
3323 /* Loop all entries */
3324 for (i = 0; i < _countof(KdbCliCallbacks); i++)
3325 {
3326 /* Check if deregistering was requested */
3327 if (Deregister)
3328 {
3329 /* Check if this entry is the one that was registered */
3330 if (KdbCliCallbacks[i] == Callback)
3331 {
3332 /* Delete it and report success */
3333 KdbCliCallbacks[i] = NULL;
3334 return TRUE;
3335 }
3336 }
3337 else
3338 {
3339 /* Check if this entry is free */
3340 if (KdbCliCallbacks[i] == NULL)
3341 {
3342 /* Set it and and report success */
3343 KdbCliCallbacks[i] = Callback;
3344 return TRUE;
3345 }
3346 }
3347 }
3348
3349 /* Unsuccessful */
3350 return FALSE;
3351 }
3352
3353 /*! \brief Invokes registered CLI callbacks until one of them handled the
3354 * Command.
3355 *
3356 * \param Command - Command line to parse and execute if possible.
3357 * \param Argc - Number of arguments in Argv
3358 * \param Argv - Array of strings, each of them containing one argument.
3359 *
3360 * \return TRUE, if the command was handled, FALSE if it was not handled.
3361 */
3362 static
3363 BOOLEAN
3364 KdbpInvokeCliCallbacks(
3365 IN PCHAR Command,
3366 IN ULONG Argc,
3367 IN PCH Argv[])
3368 {
3369 ULONG i;
3370
3371 /* Loop all entries */
3372 for (i = 0; i < _countof(KdbCliCallbacks); i++)
3373 {
3374 /* Check if this entry is registered */
3375 if (KdbCliCallbacks[i])
3376 {
3377 /* Invoke the callback and check if it handled the command */
3378 if (KdbCliCallbacks[i](Command, Argc, Argv))
3379 {
3380 return TRUE;
3381 }
3382 }
3383 }
3384
3385 /* None of the callbacks handled the command */
3386 return FALSE;
3387 }
3388
3389
3390 /*!\brief Parses command line and executes command if found
3391 *
3392 * \param Command Command line to parse and execute if possible.
3393 *
3394 * \retval TRUE Don't continue execution.
3395 * \retval FALSE Continue execution (leave KDB)
3396 */
3397 static BOOLEAN
3398 KdbpDoCommand(
3399 IN PCHAR Command)
3400 {
3401 ULONG i;
3402 PCHAR p;
3403 ULONG Argc;
3404 // FIXME: for what do we need a 1024 characters command line and 256 tokens?
3405 static PCH Argv[256];
3406 static CHAR OrigCommand[1024];
3407
3408 RtlStringCbCopyA(OrigCommand, sizeof(OrigCommand), Command);
3409
3410 Argc = 0;
3411 p = Command;
3412
3413 for (;;)
3414 {
3415 while (*p == '\t' || *p == ' ')
3416 p++;
3417
3418 if (*p == '\0')
3419 break;
3420
3421 i = strcspn(p, "\t ");
3422 Argv[Argc++] = p;
3423 p += i;
3424 if (*p == '\0')
3425 break;
3426
3427 *p = '\0';
3428 p++;
3429 }
3430
3431 if (Argc < 1)
3432 return TRUE;
3433
3434 for (i = 0; i < RTL_NUMBER_OF(KdbDebuggerCommands); i++)
3435 {
3436 if (!KdbDebuggerCommands[i].Name)
3437 continue;
3438
3439 if (strcmp(KdbDebuggerCommands[i].Name, Argv[0]) == 0)
3440 {
3441 return KdbDebuggerCommands[i].Fn(Argc, Argv);
3442 }
3443 }
3444
3445 /* Now invoke the registered callbacks */
3446 if (KdbpInvokeCliCallbacks(Command, Argc, Argv))
3447 {
3448 return TRUE;
3449 }
3450
3451 KdbpPrint("Command '%s' is unknown.\n", OrigCommand);
3452 return TRUE;
3453 }
3454
3455 /*!\brief KDB Main Loop.
3456 *
3457 * \param EnteredOnSingleStep TRUE if KDB was entered on single step.
3458 */
3459 VOID
3460 KdbpCliMainLoop(
3461 IN BOOLEAN EnteredOnSingleStep)
3462 {
3463 static CHAR Command[1024];
3464 BOOLEAN Continue;
3465
3466 if (EnteredOnSingleStep)
3467 {
3468 if (!KdbSymPrintAddress((PVOID)KdbCurrentTrapFrame->Tf.Eip, &KdbCurrentTrapFrame->Tf))
3469 {
3470 KdbpPrint("<%x>", KdbCurrentTrapFrame->Tf.Eip);
3471 }
3472
3473 KdbpPrint(": ");
3474 if (KdbpDisassemble(KdbCurrentTrapFrame->Tf.Eip, KdbUseIntelSyntax) < 0)
3475 {
3476 KdbpPrint("<INVALID>");
3477 }
3478 KdbpPrint("\n");
3479 }
3480
3481 /* Flush the input buffer */
3482 if (KdbDebugState & KD_DEBUG_KDSERIAL)
3483 {
3484 while (KdbpTryGetCharSerial(1) != -1);
3485 }
3486 else
3487 {
3488 ULONG ScanCode;
3489 while (KdbpTryGetCharKeyboard(&ScanCode, 1) != -1);
3490 }
3491
3492 /* Main loop */
3493 do
3494 {
3495 /* Reset the number of rows/cols printed */
3496 KdbNumberOfRowsPrinted = KdbNumberOfColsPrinted = 0;
3497
3498 /* Print the prompt */
3499 KdbpPrint("kdb:> ");
3500
3501 /* Read a command and remember it */
3502 KdbpReadCommand(Command, sizeof (Command));
3503 KdbpCommandHistoryAppend(Command);
3504
3505 /* Reset the number of rows/cols printed and output aborted state */
3506 KdbNumberOfRowsPrinted = KdbNumberOfColsPrinted = 0;
3507 KdbOutputAborted = FALSE;
3508
3509 /* Call the command */
3510 Continue = KdbpDoCommand(Command);
3511 KdbOutputAborted = FALSE;
3512 }
3513 while (Continue);
3514 }
3515
3516 /*!\brief Called when a module is loaded.
3517 *
3518 * \param Name Filename of the module which was loaded.
3519 */
3520 VOID
3521 KdbpCliModuleLoaded(
3522 IN PUNICODE_STRING Name)
3523 {
3524 if (!KdbBreakOnModuleLoad)
3525 return;
3526
3527 KdbpPrint("Module %wZ loaded.\n", Name);
3528 DbgBreakPointWithStatus(DBG_STATUS_CONTROL_C);
3529 }
3530
3531 /*!\brief This function is called by KdbEnterDebuggerException...
3532 *
3533 * Used to interpret the init file in a context with a trapframe setup
3534 * (KdbpCliInit call KdbEnter which will call KdbEnterDebuggerException which will
3535 * call this function if KdbInitFileBuffer is not NULL.
3536 */
3537 VOID
3538 KdbpCliInterpretInitFile(VOID)
3539 {
3540 PCHAR p1, p2;
3541 INT i;
3542 CHAR c;
3543
3544 /* Execute the commands in the init file */
3545 DPRINT("KDB: Executing KDBinit file...\n");
3546 p1 = KdbInitFileBuffer;
3547 while (p1[0] != '\0')
3548 {
3549 i = strcspn(p1, "\r\n");
3550 if (i > 0)
3551 {
3552 c = p1[i];
3553 p1[i] = '\0';
3554
3555 /* Look for "break" command and comments */
3556 p2 = p1;
3557
3558 while (isspace(p2[0]))
3559 p2++;
3560
3561 if (strncmp(p2, "break", sizeof("break")-1) == 0 &&
3562 (p2[sizeof("break")-1] == '\0' || isspace(p2[sizeof("break")-1])))
3563 {
3564 /* break into the debugger */
3565 KdbpCliMainLoop(FALSE);
3566 }
3567 else if (p2[0] != '#' && p2[0] != '\0') /* Ignore empty lines and comments */
3568 {
3569 KdbpDoCommand(p1);
3570 }
3571
3572 p1[i] = c;
3573 }
3574
3575 p1 += i;
3576 while (p1[0] == '\r' || p1[0] == '\n')
3577 p1++;
3578 }
3579 DPRINT("KDB: KDBinit executed\n");
3580 }
3581
3582 /*!\brief Called when KDB is initialized
3583 *
3584 * Reads the KDBinit file from the SystemRoot\System32\drivers\etc directory and executes it.
3585 */
3586 VOID
3587 KdbpCliInit(VOID)
3588 {
3589 NTSTATUS Status;
3590 OBJECT_ATTRIBUTES ObjectAttributes;
3591 UNICODE_STRING FileName;
3592 IO_STATUS_BLOCK Iosb;
3593 FILE_STANDARD_INFORMATION FileStdInfo;
3594 HANDLE hFile = NULL;
3595 INT FileSize;
3596 PCHAR FileBuffer;
3597 ULONG OldEflags;
3598
3599 /* Initialize the object attributes */
3600 RtlInitUnicodeString(&FileName, L"\\SystemRoot\\System32\\drivers\\etc\\KDBinit");
3601 InitializeObjectAttributes(&ObjectAttributes, &FileName, 0, NULL, NULL);
3602
3603 /* Open the file */
3604 Status = ZwOpenFile(&hFile, FILE_READ_DATA | SYNCHRONIZE,
3605 &ObjectAttributes, &Iosb, 0,
3606 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
3607 FILE_NO_INTERMEDIATE_BUFFERING);
3608 if (!NT_SUCCESS(Status))
3609 {
3610 DPRINT("Could not open \\SystemRoot\\System32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
3611 return;
3612 }
3613
3614 /* Get the size of the file */
3615 Status = ZwQueryInformationFile(hFile, &Iosb, &FileStdInfo, sizeof (FileStdInfo),
3616 FileStandardInformation);
3617 if (!NT_SUCCESS(Status))
3618 {
3619 ZwClose(hFile);
3620 DPRINT("Could not query size of \\SystemRoot\\System32\\drivers\\etc\\KDBinit (Status 0x%x)", Status);
3621 return;
3622 }
3623 FileSize = FileStdInfo.EndOfFile.u.LowPart;
3624
3625 /* Allocate memory for the file */
3626 FileBuffer = ExAllocatePool(PagedPool, FileSize + 1); /* add 1 byte for terminating '\0' */
3627 if (!FileBuffer)
3628 {
3629 ZwClose(hFile);
3630 DPRINT("Could not allocate %d bytes for KDBinit file\n", FileSize);
3631 return;
3632 }
3633
3634 /* Load file into memory */
3635 Status = ZwReadFile(hFile, NULL, NULL, NULL, &Iosb, FileBuffer, FileSize, NULL, NULL);
3636 ZwClose(hFile);
3637
3638 if (!NT_SUCCESS(Status) && Status != STATUS_END_OF_FILE)
3639 {
3640 ExFreePool(FileBuffer);
3641 DPRINT("Could not read KDBinit file into memory (Status 0x%lx)\n", Status);
3642 return;
3643 }
3644
3645 FileSize = min(FileSize, (INT)Iosb.Information);
3646 FileBuffer[FileSize] = '\0';
3647
3648 /* Enter critical section */
3649 OldEflags = __readeflags();
3650 _disable();
3651
3652 /* Interpret the init file... */
3653 KdbInitFileBuffer = FileBuffer;
3654 KdbEnter();
3655 KdbInitFileBuffer = NULL;
3656
3657 /* Leave critical section */
3658 __writeeflags(OldEflags);
3659
3660 ExFreePool(FileBuffer);
3661 }
3662
3663 VOID
3664 NTAPI
3665 KdpSerialDebugPrint(
3666 LPSTR Message,
3667 ULONG Length
3668 );
3669
3670 STRING KdpPromptString = RTL_CONSTANT_STRING("kdb:> ");
3671 extern KSPIN_LOCK KdpSerialSpinLock;
3672
3673 ULONG
3674 NTAPI
3675 KdpPrompt(
3676 _In_reads_bytes_(InStringLength) PCHAR UnsafeInString,
3677 _In_ USHORT InStringLength,
3678 _Out_writes_bytes_(OutStringLength) PCHAR UnsafeOutString,
3679 _In_ USHORT OutStringLength,
3680 _In_ KPROCESSOR_MODE PreviousMode)
3681 {
3682 USHORT i;
3683 CHAR Response;
3684 ULONG DummyScanCode;
3685 KIRQL OldIrql;
3686 PCHAR InString;
3687 PCHAR OutString;
3688 CHAR InStringBuffer[512];
3689 CHAR OutStringBuffer[512];
3690
3691 /* Normalize the lengths */
3692 InStringLength = min(InStringLength,
3693 sizeof(InStringBuffer));
3694 OutStringLength = min(OutStringLength,
3695 sizeof(OutStringBuffer));
3696
3697 /* Check if we need to verify the string */
3698 if (PreviousMode != KernelMode)
3699 {
3700 /* Handle user-mode buffers safely */
3701 _SEH2_TRY
3702 {
3703 /* Probe the prompt */
3704 ProbeForRead(UnsafeInString,
3705 InStringLength,
3706 1);
3707
3708 /* Capture prompt */
3709 InString = InStringBuffer;
3710 RtlCopyMemory(InString,
3711 UnsafeInString,
3712 InStringLength);
3713
3714 /* Probe and make room for response */
3715 ProbeForWrite(UnsafeOutString,
3716 OutStringLength,
3717 1);
3718 OutString = OutStringBuffer;
3719 }
3720 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
3721 {
3722 /* Bad string pointer, bail out */
3723 _SEH2_YIELD(return 0);
3724 }
3725 _SEH2_END;
3726 }
3727 else
3728 {
3729 InString = UnsafeInString;
3730 OutString = UnsafeOutString;
3731 }
3732
3733 /* Acquire the printing spinlock without waiting at raised IRQL */
3734 while (TRUE)
3735 {
3736 /* Wait when the spinlock becomes available */
3737 while (!KeTestSpinLock(&KdpSerialSpinLock));
3738
3739 /* Spinlock was free, raise IRQL */
3740 KeRaiseIrql(HIGH_LEVEL, &OldIrql);
3741
3742 /* Try to get the spinlock */
3743 if (KeTryToAcquireSpinLockAtDpcLevel(&KdpSerialSpinLock))
3744 break;
3745
3746 /* Someone else got the spinlock, lower IRQL back */
3747 KeLowerIrql(OldIrql);
3748 }
3749
3750 /* Loop the string to send */
3751 for (i = 0; i < InStringLength; i++)
3752 {
3753 /* Print it to serial */
3754 KdPortPutByteEx(&SerialPortInfo, *(PCHAR)(InString + i));
3755 }
3756
3757 /* Print a new line for log neatness */
3758 KdPortPutByteEx(&SerialPortInfo, '\r');
3759 KdPortPutByteEx(&SerialPortInfo, '\n');
3760
3761 /* Print the kdb prompt */
3762 for (i = 0; i < KdpPromptString.Length; i++)
3763 {
3764 /* Print it to serial */
3765 KdPortPutByteEx(&SerialPortInfo,
3766 *(KdpPromptString.Buffer + i));
3767 }
3768
3769 if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
3770 KbdDisableMouse();
3771
3772 /* Loop the whole string */
3773 for (i = 0; i < OutStringLength; i++)
3774 {
3775 /* Check if this is serial debugging mode */
3776 if (KdbDebugState & KD_DEBUG_KDSERIAL)
3777 {
3778 /* Get the character from serial */
3779 do
3780 {
3781 Response = KdbpTryGetCharSerial(MAXULONG);
3782 } while (Response == -1);
3783 }
3784 else
3785 {
3786 /* Get the response from the keyboard */
3787 do
3788 {
3789 Response = KdbpTryGetCharKeyboard(&DummyScanCode, MAXULONG);
3790 } while (Response == -1);
3791 }
3792
3793 /* Check for return */
3794 if (Response == '\r')
3795 {
3796 /*
3797 * We might need to discard the next '\n'.
3798 * Wait a bit to make sure we receive it.
3799 */
3800 KeStallExecutionProcessor(100000);
3801
3802 /* Check the mode */
3803 if (KdbDebugState & KD_DEBUG_KDSERIAL)
3804 {
3805 /* Read and discard the next character, if any */
3806 KdbpTryGetCharSerial(5);
3807 }
3808 else
3809 {
3810 /* Read and discard the next character, if any */
3811 KdbpTryGetCharKeyboard(&DummyScanCode, 5);
3812 }
3813
3814 /*
3815 * Null terminate the output string -- documentation states that
3816 * DbgPrompt does not null terminate, but it does
3817 */
3818 *(PCHAR)(OutString + i) = 0;
3819 break;
3820 }
3821
3822 /* Write it back and print it to the log */
3823 *(PCHAR)(OutString + i) = Response;
3824 KdPortPutByteEx(&SerialPortInfo, Response);
3825 }
3826
3827 if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
3828 KbdEnableMouse();
3829
3830 /* Print a new line */
3831 KdPortPutByteEx(&SerialPortInfo, '\r');
3832 KdPortPutByteEx(&SerialPortInfo, '\n');
3833
3834 /* Release spinlock */
3835 KiReleaseSpinLock(&KdpSerialSpinLock);
3836
3837 /* Lower IRQL back */
3838 KeLowerIrql(OldIrql);
3839
3840 /* Copy back response if required */
3841 if (PreviousMode != KernelMode)
3842 {
3843 _SEH2_TRY
3844 {
3845 /* Safely copy back response to user mode */
3846 RtlCopyMemory(UnsafeOutString,
3847 OutString,
3848 i);
3849 }
3850 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
3851 {
3852 /* String became invalid after we exited, fail */
3853 _SEH2_YIELD(return 0);
3854 }
3855 _SEH2_END;
3856 }
3857
3858 /* Return the length */
3859 return i;
3860 }
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