You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: cpu.rs
    path of file: ./repos/dustbox-rs/dustbox/benches
    
    the code of the file until where you have to start completion: #[macro_use]
extern crate criterion;

extern crate dustbox;

use criterion::Criterion;

use dustbox::machine::Machine;

fn exec_simple_loop(c: &mut Criterion) {
    let mut machine = Machine::deterministic();
    let code: Vec<u8> = vec![
        0xB
    
fn exec_simple_loop(c: &mut Criterion) {
    let mut machine = Machine::deterministic();
    let code: Vec<u8> = vec![
        0xB9, 0xFF, 0xFF, // mov cx,0xffff
        0x49,             // dec cx
        0xEB, 0xFA,       // jmp short 0x100
    ];

    machine.load_executable(&code, 0x085F);

    c.bench_function("execute small jmp short loop", move |b| b.iter(|| machine.execute_instruction()));
}