reactos/ntoskrnl/kd/kdebug.c

   1 /* $Id: kdebug.c,v 1.6 2000/02/27 02:09:40 ekohl 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
  16
  17 /*
  18  * Uncomment one of the following symbols to select a debug output style.
  19  *
  20  * SCREEN_DEBUGGING:
  21  *    Debug information is printed on the screen.
  22  *
  23  * SERIAL_DEBUGGING:
  24  *    Debug information is printed to a serial device. Check the port
  25  *    address, the baud rate and the data format.
  26  *    Default: COM1 19200 Baud 8N1 (8 data bits, no parity, 1 stop bit)
  27  *
  28  * BOCHS_DEBUGGING: (not tested yet)
  29  *    Debug information is printed to the bochs logging port. Bochs
  30  *    writes the output to a log file.
  31  */
  32
  33 #define SCREEN_DEBUGGING        /* debug info is printed on the screen */
  34 //#define SERIAL_DEBUGGING      /* remote debugging */
  35 //#define BOCHS_DEBUGGING       /* debug output using bochs */
  36
  37
  38 #define SERIAL_DEBUG_PORT 1     /* COM 1 */
  39 // #define SERIAL_DEBUG_PORT 2  /* COM 2 */
  40 #define SERIAL_DEBUG_BAUD_RATE 19200
  41
  42
  43 //#define BOCHS_DEBUGGING
  44 #ifdef BOCHS_DEBUGGING
  45 #define BOCHS_LOGGER_PORT (0xe9)
  46 #endif
  47
  48
  49 /* VARIABLES ***************************************************************/
  50
  51 BOOLEAN KdDebuggerEnabled = FALSE;              /* EXPORTED */
  52 BOOLEAN KdDebuggerNotPresent = TRUE;            /* EXPORTED */
  53
  54
  55 /* PRIVATE FUNCTIONS ********************************************************/
  56
  57 VOID
  58 KdInitSystem (VOID)
  59 {
  60
  61         /* FIXME: parse kernel command line */
  62
  63         /* initialize debug port */
  64 #ifdef SERIAL_DEBUGGING
  65         KD_PORT_INFORMATION PortInfo;
  66
  67         PortInfo.ComPort  = SERIAL_DEBUG_PORT;
  68         PortInfo.BaudRate = SERIAL_DEBUG_BAUD_RATE;
  69
  70         KdPortInitialize (&PortInfo,
  71                           0,
  72                           0);
  73 #endif
  74 }
  75
  76
  77 ULONG
  78 KdpPrintString (PANSI_STRING String)
  79 {
  80 #if defined(SERIAL_DEBUGGING) || defined(BOCHS_DEBUGGING)
  81    PCH pch = String->Buffer;
  82 #endif
  83
  84 #ifdef SCREEN_DEBUGGING
  85    HalDisplayString (String->Buffer);
  86 #endif
  87
  88 #ifdef SERIAL_DEBUGGING
  89    while (*pch != 0)
  90    {
  91        if (*pch == '\n')
  92        {
  93            KdPortPutByte ('\r');
  94        }
  95
  96        KdPortPutByte (*pch);
  97
  98        pch++;
  99    }
 100 #endif
 101
 102 #ifdef BOCHS_DEBUGGING
 103    while (*pch != 0)
 104    {
 105        if (*pch == '\n')
 106        {
 107            WRITE_PORT_UCHAR((PUCHAR)BOCHS_LOGGER_PORT, '\r');
 108        }
 109
 110        WRITE_PORT_UCHAR((PUCHAR)BOCHS_LOGGER_PORT, *pch);
 111
 112        pch++;
 113    }
 114 #endif
 115
 116     return (ULONG)String->Length;
 117 }
 118
 119 /* PUBLIC FUNCTIONS *********************************************************/
 120
 121 /* NTOSKRNL.KdPollBreakIn */
 122
 123 BYTE
 124 STDCALL
 125 KdPollBreakIn (
 126         VOID
 127         )
 128 {
 129         return KdPortPollByte();
 130 }
 131
 132
 133 /* EOF */