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[NTOS:KDBG]: Sync back the code that I copied in FreeLdr (r70403) for COM port selection.

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svn path=/trunk/; revision=70404
This commit is contained in:
Hermès Bélusca-Maïto 2015-12-20 02:53:30 +00:00
parent 7642306ded
commit 38814b24c9
1 changed files with 5 additions and 6 deletions
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11
reactos/ntoskrnl/kd/i386/kdbg.c
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@ -28,6 +28,8 @@ const ULONG BaseArray[] = {0, 0xF1012000};
#error Unknown architecture #error Unknown architecture
#endif #endif
#define MAX_COM_PORTS (sizeof(BaseArray) / sizeof(BaseArray[0]) - 1)
/* STATIC VARIABLES ***********************************************************/ /* STATIC VARIABLES ***********************************************************/
// static CPPORT DefaultPort = {0, 0, 0}; // static CPPORT DefaultPort = {0, 0, 0};
@ -35,7 +37,6 @@ const ULONG BaseArray[] = {0, 0xF1012000};
/* The COM port must only be initialized once! */ /* The COM port must only be initialized once! */
// static BOOLEAN PortInitialized = FALSE; // static BOOLEAN PortInitialized = FALSE;
/* REACTOS FUNCTIONS **********************************************************/ /* REACTOS FUNCTIONS **********************************************************/
NTSTATUS NTSTATUS
@ -58,7 +59,6 @@ KdPortInitializeEx(
/* /*
* Find the port if needed * Find the port if needed
*/ */
SIZE_T i;
if (!PortInitialized) if (!PortInitialized)
{ {
@ -72,12 +72,11 @@ KdPortInitializeEx(
* If we reach the first element of the list, the invalid COM port, * If we reach the first element of the list, the invalid COM port,
* then it means that no valid port was found. * then it means that no valid port was found.
*/ */
for (i = sizeof(BaseArray) / sizeof(BaseArray[0]) - 1; i > 0; i--) for (ComPortNumber = MAX_COM_PORTS; ComPortNumber > 0; ComPortNumber--)
{ {
if (CpDoesPortExist(UlongToPtr(BaseArray[i]))) if (CpDoesPortExist(UlongToPtr(BaseArray[ComPortNumber])))
{ {
PortInformation->Address = DefaultPort.Address = BaseArray[i]; PortInformation->Address = DefaultPort.Address = BaseArray[ComPortNumber];
ComPortNumber = (ULONG)i;
break; break;
} }
} }