struct _ACTIVATION_CONTEXT_STACK64// Size=0x28
{
    unsigned long long ActiveFrame;// Offset=0x0 Size=0x8
    struct LIST_ENTRY64 FrameListCache;// Offset=0x8 Size=0x10
    unsigned long Flags;// Offset=0x18 Size=0x4
    unsigned long NextCookieSequenceNumber;// Offset=0x1c Size=0x4
    unsigned long StackId;// Offset=0x20 Size=0x4
};