/*
* @implemented
*/
NTSTATUS
NTAPI
NtVdmControl(IN ULONG ControlCode,
IN PVOID ControlData)
{
NTSTATUS Status;
PAGED_CODE();
/* Check which control code this is */
switch (ControlCode)
{
/* VDM Execution start */
case VdmStartExecution:
/* Call the sub-function */
Status = VdmpStartExecution();
break;
case VdmInitialize:
/* Call the init sub-function */
Status = VdmpInitialize(ControlData);
break;
default:
/* Unsupported */
DPRINT1("Unknown VDM call: %lx\n", ControlCode);
Status = STATUS_INVALID_PARAMETER;
}
/* Return the status */
return Status;
}
NTSTATUS
NtVdmControl(
IN VDMSERVICECLASS Service,
IN OUT PVOID ServiceData
)
/*++
Routine Description:
x86 specific routine which dispatches to the appropriate function
based on service number.
Arguments:
Service -- Specifies what service is to be performed
ServiceData -- Supplies a pointer to service specific data
Return Value:
if invalid service number: STATUS_INVALID_PARAMETER_1
else see individual services.
--*/
{
NTSTATUS Status;
PAGED_CODE();
//
// Dispatch in descending order of frequency
//
if (Service == VdmStartExecution) {
Status = VdmpStartExecution();
} else if (Service == VdmQueueInterrupt) {
Status = VdmpQueueInterrupt(ServiceData);
} else if (Service == VdmDelayInterrupt) {
Status = VdmpDelayInterrupt(ServiceData);
} else if (Service == VdmQueryDir) {
Status = VdmQueryDirectoryFile(ServiceData);
} else if (Service == VdmInitialize) {
Status = VdmpInitialize(ServiceData);
} else if (Service == VdmFeatures) {
try {
//
// Verify that we were passed a valid user address
//
ProbeForWriteBoolean((PBOOLEAN)ServiceData);
//
// Return the appropriate feature bits to notify
// ntvdm which modes (if any) fast IF emulation is
// available for
//
if (KeI386VdmIoplAllowed) {
*((PULONG)ServiceData) = V86_VIRTUAL_INT_EXTENSIONS;
} else {
// remove this if pm extensions to be used
*((PULONG)ServiceData) = KeI386VirtualIntExtensions &
~PM_VIRTUAL_INT_EXTENSIONS;
}
}
except(EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
}
Status = STATUS_SUCCESS;
} else if (Service == VdmSetInt21Handler) {