typedef struct _service_descriptor_table
{
system_service_table ntoskrnl; // ntoskrnl.exe ( native api )
system_service_table win32k; // win32k.sys (gdi/user support)
system_service_table table3; // not used
system_service_table table4; // not used
}
system_descriptor_table,
*psystem_descriptor_table,
**ppsystem_descriptor_table;
