Function code:
u64 create_idt_entry(u32 offset, IDTEntryAttributes attrib){
    u64 rv = 0;
    rv |= (u64)(offset & 0x0000FFFF) << 0;
    rv |= (u64)(0x8 & 0xFFFF) << 16; // seg selc will always be 0x8 as I will not be using any other code segments
    // RESERVED 8-BITS. NEXT SHIFT IS 40
    rv |= (u64)(attrib.gate_type & 0xF) << 40;
    rv |= (u64)(attrib.reserved & 0b1) << 44;
    rv |= (u64)(attrib.DPL & 0b11) << 45;
    rv |= (u64)(attrib.present & 0b1) << 47;
    rv |= (u64)(offset & 0xFFFF0000) << 48;
    return rv;
}

Runtime argument values:
offset = decimal: 2098592 hex: 0x2005A0
attrib = {gate_type = 14 '\016', reserved = 0 '\000', DPL = 0 '\000', present = 1 '\001'}

Runtime output 💀:
decimal: 156130651669888 hex: 0x8E0000080580