struct _MMPTE_PROTOTYPE// Size=0x4
{
    unsigned long Valid:1;// Offset=0x0 Size=0x4 BitOffset=0x0 BitSize=0x1
    unsigned long ProtoAddressLow:8;// Offset=0x0 Size=0x4 BitOffset=0x1 BitSize=0x8
    unsigned long ReadOnly:1;// Offset=0x0 Size=0x4 BitOffset=0x9 BitSize=0x1
    unsigned long Prototype:1;// Offset=0x0 Size=0x4 BitOffset=0xa BitSize=0x1
    unsigned long ProtoAddressHigh:21;// Offset=0x0 Size=0x4 BitOffset=0xb BitSize=0x15
};