reactos/ntoskrnl/kdbg/kdb_serial.c
Hermès Bélusca-Maïto e1ef078741 Create this branch to work on loading of different Kernel-Debugger DLL providers, and see whether it is possible to move KDBG from ntoskrnl to a new DLL called, say, KDROSDBG.DLL.
The idea then would be to have the following behaviour (when specifying the following options in the kernel command line):

/DEBUGPORT=COMi --> load KDCOM.DLL and use COMi port (i == 1,2,3,4) if possible.
/DEBUGPORT=FOO  --> load KDFOO.DLL (useful for KDUSB.DLL, KD1394.DLL, KDBAZIS.DLL for VirtualKD, etc...)
/DEBUGPORT=ROSDBG:[COMi|SCREEN|FILE|GDB|...] --> load KDROSDBG.DLL which contains the ROS kernel debugger, and use COMi or SCREEN or... as output port.

svn path=/branches/kd++/; revision=58883
2013-04-28 13:26:45 +00:00

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C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/dbg/kdb_serial.c
* PURPOSE: Serial driver
*
* PROGRAMMERS: Victor Kirhenshtein (sauros@iname.com)
* Jason Filby (jasonfilby@yahoo.com)
* arty
*/
/* INCLUDES ****************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
CHAR
KdbpTryGetCharSerial(ULONG Retry)
{
CHAR Result = -1;
if (Retry == 0)
while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result));
else
while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result) && Retry-- > 0);
return Result;
}