typedef struct _VIRTUAL_EFI_RUNTIME_SERVICES
{
     ULONG GetTime;
     ULONG SetTime;
     ULONG GetWakeupTime;
     ULONG SetWakeupTime;
     ULONG SetVirtualAddressMap;
     ULONG ConvertPointer;
     ULONG GetVariable;
     ULONG GetNextVariableName;
     ULONG SetVariable;
     ULONG GetNextHighMonotonicCount;
     ULONG ResetSystem;
} VIRTUAL_EFI_RUNTIME_SERVICES, *PVIRTUAL_EFI_RUNTIME_SERVICES;

Windows Vista Kernel Structures