pub struct LinkedProgram<Addr> {
    pub code: Vec<u8>,
    pub entry: Option<Addr>,
    pub imports: Vec<LibImport>,
}

pub struct LibImport {
    pub name: String,
    pub syms: Vec<SymImport>,
}

pub struct SymImport {
    pub name: String,
    pub usages: Vec<usize>,
}