mirror of
https://github.com/reactos/reactos.git
synced 2024-06-29 01:12:06 +00:00
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
|
|
* COPYRIGHT: GPL, see COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* FILE: drivers/base/kdvm/kdvbox.c
|
|
* PURPOSE: VBOX data exchange function for kdvbox
|
|
* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
|
|
*/
|
|
|
|
#include "kdvm.h"
|
|
|
|
typedef struct
|
|
{
|
|
ULONG SendSize;
|
|
ULONG BufferSize;
|
|
} KDVBOX_SEND_HEADER, *PKDVBOX_SEND_HEADER;
|
|
|
|
typedef struct
|
|
{
|
|
ULONG ReceivedDataSize;
|
|
} KDVBOX_RECEIVE_HEADER, *PKDVBOX_RECEIVE_HEADER;
|
|
|
|
VOID
|
|
NTAPI
|
|
KdVmPrepareBuffer(VOID)
|
|
{
|
|
KdVmBufferPos = sizeof(KDVBOX_SEND_HEADER);
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
KdVmKdVmExchangeData(
|
|
_Out_ PVOID* ReceiveData,
|
|
_Out_ PULONG ReceiveDataSize)
|
|
{
|
|
PKDVBOX_SEND_HEADER SendHeader;
|
|
PKDVBOX_RECEIVE_HEADER ReceiveHeader;
|
|
|
|
/* Setup the send-header */
|
|
SendHeader = (PKDVBOX_SEND_HEADER)KdVmDataBuffer;
|
|
SendHeader->SendSize = KdVmBufferPos - sizeof(KDVBOX_SEND_HEADER);
|
|
SendHeader->BufferSize = KDVM_BUFFER_SIZE;
|
|
|
|
//KdpDbgPrint("Sending buffer:\n");
|
|
//KdVmDbgDumpBuffer(KdVmDataBuffer, KdVmBufferPos);
|
|
|
|
/* Do the data exchange */
|
|
KdVmExchange((ULONG_PTR)KdVmBufferPhysicalAddress.QuadPart, 0);
|
|
|
|
/* Reset the buffer position */
|
|
KdVmBufferPos = sizeof(KDVBOX_SEND_HEADER);
|
|
|
|
/* Get the receive-header and return information about the received data */
|
|
ReceiveHeader = (PKDVBOX_RECEIVE_HEADER)KdVmDataBuffer;
|
|
*ReceiveData = KdVmDataBuffer + sizeof(KDVBOX_RECEIVE_HEADER);
|
|
*ReceiveDataSize = ReceiveHeader->ReceivedDataSize;
|
|
|
|
//KdpDbgPrint("got data:\n");
|
|
//KdVmDbgDumpBuffer(KdVmDataBuffer, *ReceiveDataSize + sizeof(*ReceiveHeader));
|
|
|
|
}
|