reactos/ntoskrnl/kd/kdebug.c

   1 /* $Id: kdebug.c,v 1.46 2003/08/11 18:50:12 chorns Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/kd/kdebug.c
   6  * PURPOSE:         Kernel debugger
   7  * PROGRAMMER:      Eric Kohl (ekohl@abo.rhein-zeitung.de)
   8  * UPDATE HISTORY:
   9  *                  21/10/99: Created
  10  */
  11
  12 #include <ddk/ntddk.h>
  13 #include <internal/ntoskrnl.h>
  14 #include <internal/kd.h>
  15 #include <internal/mm.h>
  16 #include <roscfg.h>
  17 #include "../dbg/kdb.h"
  18
  19 /* serial debug connection */
  20 #define DEFAULT_DEBUG_PORT      2       /* COM2 */
  21 #define DEFAULT_DEBUG_COM1_IRQ  4       /* COM1 IRQ */
  22 #define DEFAULT_DEBUG_COM2_IRQ  3       /* COM2 IRQ */
  23 #define DEFAULT_DEBUG_BAUD_RATE 115200  /* 115200 Baud */
  24
  25 /* bochs debug output */
  26 #define BOCHS_LOGGER_PORT (0xe9)
  27
  28 /* VARIABLES ***************************************************************/
  29
  30 BOOLEAN
  31 __declspec(dllexport)
  32 KdDebuggerEnabled = FALSE;              /* EXPORTED */
  33
  34 BOOLEAN
  35 __declspec(dllexport)
  36 KdDebuggerNotPresent = TRUE;            /* EXPORTED */
  37
  38
  39 static BOOLEAN KdpBreakPending = FALSE;
  40 ULONG KdDebugState = KD_DEBUG_DISABLED;
  41 ULONG KdpPortIrq = 0;
  42
  43 KD_PORT_INFORMATION GdbPortInfo;
  44 KD_PORT_INFORMATION LogPortInfo;
  45
  46 /* PRIVATE FUNCTIONS ********************************************************/
  47
  48 static VOID
  49 PrintString(char* fmt,...)
  50 {
  51   char buffer[512];
  52   va_list ap;
  53
  54   va_start(ap, fmt);
  55   vsprintf(buffer, fmt, ap);
  56   va_end(ap);
  57
  58   HalDisplayString(buffer);
  59 }
  60
  61
  62 VOID
  63 KdInitSystem(ULONG Reserved,
  64              PLOADER_PARAMETER_BLOCK LoaderBlock)
  65 {
  66   KD_PORT_INFORMATION PortInfo;
  67   ULONG Value;
  68   PCHAR p1, p2;
  69
  70 #ifdef KDBG
  71   /* Initialize runtime debugging if available */
  72   DbgRDebugInit();
  73 #endif
  74
  75 #ifdef KDBG
  76   /* Initialize the local kernel debugger. */
  77   KdDebuggerEnabled = TRUE;
  78   KdDebugState |= KD_DEBUG_KDB;
  79 #endif
  80
  81   /* Set debug port default values */
  82   PortInfo.ComPort = DEFAULT_DEBUG_PORT;
  83   PortInfo.BaudRate = DEFAULT_DEBUG_BAUD_RATE;
  84   KdpPortIrq = DEFAULT_DEBUG_COM2_IRQ;
  85
  86   /* Set serial log port default values */
  87   LogPortInfo.ComPort = DEFAULT_DEBUG_PORT;
  88   LogPortInfo.BaudRate = DEFAULT_DEBUG_BAUD_RATE;
  89
  90   /* Parse kernel command line */
  91
  92   /* Check for 'DEBUGPORT' */
  93   p1 = (PCHAR)LoaderBlock->CommandLine;
  94   while (p1 && (p2 = strchr(p1, '/')))
  95     {
  96       p2++;
  97       if (!_strnicmp(p2, "DEBUGPORT", 9))
  98         {
  99           p2 += 9;
 100           if (*p2 == '=')
 101             {
 102               p2++;
 103               if (!_strnicmp(p2, "SCREEN", 6))
 104                 {
 105                   p2 += 6;
 106                   KdDebuggerEnabled = TRUE;
 107                   KdDebugState |= KD_DEBUG_SCREEN;
 108                 }
 109               else if (!_strnicmp(p2, "BOCHS", 5))
 110                 {
 111                   p2 += 5;
 112                   KdDebuggerEnabled = TRUE;
 113                   KdDebugState |= KD_DEBUG_BOCHS;
 114                 }
 115               else if (!_strnicmp(p2, "GDB", 3))
 116                 {
 117                   p2 += 3;
 118                   KdDebuggerEnabled = TRUE;
 119                   KdDebugState |= KD_DEBUG_GDB;
 120
 121                   /* Reset port information to defaults */
 122                   RtlMoveMemory(&GdbPortInfo, &PortInfo, sizeof(KD_PORT_INFORMATION));
 123                   PortInfo.ComPort = DEFAULT_DEBUG_PORT;
 124                   PortInfo.BaudRate = DEFAULT_DEBUG_BAUD_RATE;
 125                 }
 126               else if (!_strnicmp(p2, "PICE", 4))
 127                 {
 128                   p2 += 4;
 129                   KdDebuggerEnabled = TRUE;
 130                   KdDebugState |= KD_DEBUG_PICE;
 131                 }
 132               else if (!_strnicmp(p2, "COM", 3))
 133                 {
 134                   p2 += 3;
 135                   Value = (ULONG)atol(p2);
 136                   if (Value > 0 && Value < 5)
 137                     {
 138                       KdDebuggerEnabled = TRUE;
 139                           KdDebugState |= KD_DEBUG_SERIAL;
 140                       LogPortInfo.ComPort = Value;
 141                     }
 142                 }
 143               else if (!_strnicmp(p2, "FILE", 4))
 144                 {
 145                   p2 += 4;
 146                   KdDebuggerEnabled = TRUE;
 147                   KdDebugState |= KD_DEBUG_FILELOG;
 148                 }
 149               else if (!_strnicmp(p2, "MDA", 3))
 150                 {
 151                   p2 += 3;
 152                   KdDebuggerEnabled = TRUE;
 153                   KdDebugState |= KD_DEBUG_MDA;
 154                 }
 155             }
 156         }
 157       else if (!_strnicmp(p2, "DEBUG", 5))
 158         {
 159           p2 += 5;
 160           KdDebuggerEnabled = TRUE;
 161           KdDebugState |= KD_DEBUG_SERIAL;
 162         }
 163       else if (!_strnicmp(p2, "NODEBUG", 7))
 164         {
 165           p2 += 7;
 166           KdDebuggerEnabled = FALSE;
 167           KdDebugState = KD_DEBUG_DISABLED;
 168         }
 169       else if (!_strnicmp(p2, "CRASHDEBUG", 10))
 170         {
 171           p2 += 10;
 172           KdDebuggerEnabled = FALSE;
 173           KdDebugState = KD_DEBUG_DISABLED;
 174         }
 175       else if (!_strnicmp(p2, "BREAK", 5))
 176         {
 177           p2 += 5;
 178           KdpBreakPending = TRUE;
 179         }
 180       else if (!_strnicmp(p2, "COM", 3))
 181         {
 182           p2 += 3;
 183           if ('=' == *p2)
 184             {
 185               p2++;
 186               Value = (ULONG)atol(p2);
 187               if (0 < Value && Value < 5)
 188                 {
 189                   PortInfo.ComPort = Value;
 190                 }
 191             }
 192         }
 193       else if (!_strnicmp(p2, "BAUDRATE", 8))
 194         {
 195           p2 += 8;
 196           if ('=' == *p2)
 197             {
 198               p2++;
 199               Value = (ULONG)atol(p2);
 200               if (0 < Value)
 201                 {
 202                   PortInfo.BaudRate = Value;
 203                 }
 204             }
 205         }
 206       else if (!_strnicmp(p2, "IRQ", 3))
 207         {
 208           p2 += 3;
 209           if ('=' == *p2)
 210             {
 211               p2++;
 212               Value = (ULONG)atol(p2);
 213               if (0 < Value)
 214                 {
 215                   KdpPortIrq = Value;
 216                 }
 217             }
 218         }
 219 #ifdef KDBG
 220     else if (!_strnicmp(p2, "PROFILE", 7))
 221       {
 222         KdbInitProfiling();
 223       }
 224 #endif /* KDBG */
 225       p1 = p2;
 226     }
 227
 228   /* Perform any initialization nescessary */
 229   if (KdDebuggerEnabled == TRUE)
 230     {
 231       if (KdDebugState & KD_DEBUG_GDB)
 232             KdPortInitializeEx(&GdbPortInfo, 0, 0);
 233
 234       if (KdDebugState & KD_DEBUG_SERIAL)
 235             KdPortInitializeEx(&LogPortInfo, 0, 0);
 236
 237       if (KdDebugState & KD_DEBUG_FILELOG)
 238             DebugLogInit();
 239
 240       if (KdDebugState & KD_DEBUG_MDA)
 241             KdInitializeMda();
 242     }
 243 }
 244
 245
 246 VOID
 247 KdInit1(VOID)
 248 {
 249   /* Initialize kernel debugger (phase 0) */
 250   if ((KdDebuggerEnabled == TRUE) &&
 251       (KdDebugState & KD_DEBUG_GDB))
 252     {
 253       KdGdbStubInit(0);
 254     }
 255 }
 256
 257
 258 VOID KdInit2(VOID)
 259 {
 260   /* Initialize kernel debugger (phase 1) */
 261   if ((KdDebuggerEnabled == TRUE) &&
 262       (KdDebugState & KD_DEBUG_GDB))
 263     {
 264       KdGdbStubInit(1);
 265     }
 266 }
 267
 268
 269 VOID
 270 KdInit3(VOID)
 271 {
 272   /* Print some information */
 273   if (KdDebuggerEnabled == TRUE)
 274     {
 275       if (KdDebugState & KD_DEBUG_GDB)
 276             PrintString("\n   GDB debugging enabled. COM%ld %ld Baud\n\n",
 277                         GdbPortInfo.ComPort, GdbPortInfo.BaudRate);
 278
 279       if (KdDebugState & KD_DEBUG_PICE)
 280             PrintString("\n   Private ICE debugger enabled\n\n");
 281
 282       if (KdDebugState & KD_DEBUG_SCREEN)
 283             PrintString("\n   Screen debugging enabled\n\n");
 284
 285       if (KdDebugState & KD_DEBUG_BOCHS)
 286             PrintString("\n   Bochs debugging enabled\n\n");
 287
 288       if (KdDebugState & KD_DEBUG_SERIAL)
 289             PrintString("\n   Serial debugging enabled. COM%ld %ld Baud\n\n",
 290                         LogPortInfo.ComPort, LogPortInfo.BaudRate);
 291
 292       if (KdDebugState & KD_DEBUG_FILELOG)
 293             PrintString("\n   File log debugging enabled\n\n");
 294       if (KdDebugState & KD_DEBUG_MDA)
 295             PrintString("\n   MDA debugging enabled\n\n");
 296     }
 297 }
 298
 299
 300 VOID
 301 KdSerialDebugPrint (LPSTR Message)
 302 {
 303   PCHAR pch = (PCHAR) Message;
 304
 305   while (*pch != 0)
 306     {
 307       if (*pch == '\n')
 308         {
 309           KdPortPutByteEx (&LogPortInfo, '\r');
 310         }
 311         KdPortPutByteEx (&LogPortInfo, *pch);
 312         pch++;
 313     }
 314 }
 315
 316
 317 VOID
 318 KdBochsDebugPrint(IN LPSTR  Message)
 319 {
 320         while (*Message != 0)
 321           {
 322             if (*Message == '\n')
 323               {
 324                 WRITE_PORT_UCHAR((PUCHAR)BOCHS_LOGGER_PORT, '\r');
 325               }
 326             WRITE_PORT_UCHAR((PUCHAR)BOCHS_LOGGER_PORT, *Message);
 327             Message++;
 328           }
 329 }
 330
 331
 332 ULONG
 333 KdpPrintString(PANSI_STRING String)
 334 {
 335         PCH pch = String->Buffer;
 336
 337         if (KdDebugState & KD_DEBUG_GDB)
 338                 KdGdbDebugPrint(pch);
 339
 340         if (KdDebugState & KD_DEBUG_SCREEN)
 341                 HalDisplayString(pch);
 342
 343         if (KdDebugState & KD_DEBUG_SERIAL)
 344                 KdSerialDebugPrint(pch);
 345
 346         if (KdDebugState & KD_DEBUG_BOCHS)
 347                 KdBochsDebugPrint(pch);
 348
 349         if (KdDebugState & KD_DEBUG_FILELOG)
 350                 DebugLogWrite(pch);
 351
 352         if (KdDebugState & KD_DEBUG_MDA)
 353                 KdPrintMda(pch);
 354
 355         return((ULONG)String->Length);
 356 }
 357
 358 /* PUBLIC FUNCTIONS *********************************************************/
 359
 360 /* NTOSKRNL.KdPollBreakIn */
 361
 362 /*
 363  * @implemented
 364  */
 365 BOOLEAN STDCALL
 366 KdPollBreakIn(VOID)
 367 {
 368   if ((!KdDebuggerEnabled) || (!(KdDebugState & KD_DEBUG_SERIAL)))
 369     return FALSE;
 370   return KdpBreakPending;
 371 }
 372
 373 /*
 374  * @implemented
 375  */
 376 VOID STDCALL
 377 KeEnterKernelDebugger(VOID)
 378 {
 379   HalDisplayString("\n\n *** Entered kernel debugger ***\n");
 380
 381   for (;;)
 382     __asm__("hlt\n\t");
 383 }
 384
 385 VOID STDCALL
 386 KdSystemDebugControl(ULONG Code)
 387 {
 388   extern VOID PsDumpThreads(BOOLEAN IncludeSystem);
 389
 390   /* A - Dump the entire contents of the non-paged pool. */
 391   if (Code == 0)
 392     {
 393       MiDebugDumpNonPagedPool(FALSE);
 394     }
 395   /* B - Bug check the system. */
 396   else if (Code == 1)
 397     {
 398       KEBUGCHECK(0);
 399     }
 400   /*
 401    * C -  Dump statistics about the distribution of tagged blocks in
 402    *      the non-paged pool.
 403    */
 404   else if (Code == 2)
 405     {
 406       MiDebugDumpNonPagedPoolStats(FALSE);
 407     }
 408   /*
 409    * D - Dump the blocks created in the non-paged pool since the last
 410    * SysRq + D and SysRq + E command.
 411    */
 412   else if (Code == 3)
 413     {
 414       MiDebugDumpNonPagedPool(TRUE);
 415     }
 416   /* E - Dump statistics about the tags of newly created blocks. */
 417   else if (Code == 4)
 418     {
 419       MiDebugDumpNonPagedPoolStats(TRUE);
 420     }
 421   /* F */
 422   else if (Code == 5)
 423     {
 424       PsDumpThreads(TRUE);
 425     }
 426   /* G */
 427   else if (Code == 6)
 428     {
 429       PsDumpThreads(FALSE);
 430     }
 431   /* H */
 432   else if (Code == 7)
 433     {
 434     }
 435   /* I */
 436   else if (Code == 8)
 437     {
 438     }
 439   /* J */
 440   else if (Code == 9)
 441     {
 442     }
 443   /* K - Enter the system debugger. */
 444   else if (Code == 10)
 445     {
 446 #ifdef KDBG
 447       KdbEnter();
 448 #else /* KDBG */
 449       DbgPrint("No local kernel debugger\n");
 450 #endif /* not KDBG */
 451     }
 452 }
 453
 454
 455 /* Support routines for the GDB stubs */
 456
 457 VOID
 458 KdPutChar(UCHAR Value)
 459 {
 460   KdPortPutByteEx (&GdbPortInfo, Value);
 461 }
 462
 463
 464 UCHAR
 465 KdGetChar(VOID)
 466 {
 467   UCHAR Value;
 468
 469   while (!KdPortGetByteEx (&GdbPortInfo, &Value));
 470
 471   return Value;
 472 }
 473
 474 /* EOF */