Macro syscall_modules 

macro_rules! syscall_modules {
    (
        $(
            [
                $syscall_number:expr;
                $($syscall_path:tt)::+;
                $syscall_constant_ident:ident;
                $syscall_signature:ident;
                $syscall_label:expr
            ]
        ),
        *) => { ... };
}