pub enum AsmOpcode {
    Nop,

    // move
    Mov,
    CMov,

    // load
    Ldb,
    Ldbs,
    Ldh,
    Ldhs,
    Ldw,

    // store
    Stb,
    Sth,
    Stw,

    // load immediate
    Lli,
    Lui,
    Lwi,

    // comparison
    Ieq,
    Ine,
    Ilt,
    Ile,
    Igt,
    Ige,

    // jump
    Jmp,
    Jez,
    Jnz,
    Jic,
    Jnc,

    // bitwise
    And,
    Nand,
    Or,
    Nor,
    Xor,
    Xnor,
    Not,

    // arithmetic
    Add,
    Sub,
    Shl,
    Shr,
    Addi,
    Subi,

    // utility
    Push,
    Pop,
    Call,
    Ret,

    // system
    Int,
    IRet,
    Hlt,
}