Description

Fully working example of a RUST no-std console application with print functionality and Vectors

Compiling

Prerequisites for Windows users (MinGW-64)

1- Install msys2-x86_64-latest.exe from https://repo.msys2.org/distrib/

2- Once installed open MSYS console and install the compiler

pacman -S mingw-w64-x86_64-gcc mingw-w64-x86_64-gdb mingw-w64-x86_64-make

3- Set C:\msys64\mingw64\bin\ (os where you installed MingW64) folder on your PATH enviroment variable

set PATH=%PATH%;C:\msys64\mingw64\bin\

Install Rust GNU Toolchain

rustup toolchain install nightly-x86_64-pc-windows-gnu
rustup default nightly-x86_64-pc-windows-gnu`

Compile and Run

cargo run --release

Dependencies

• https://github.com/daniel5151/libc_alloc
• https://github.com/mmastrac/rust-libc-print

Code

src/main.rs

#![no_std]
#![no_main]
#![feature(default_alloc_error_handler)]

// no-std print functions
use libc_print::*;

// allocator
use libc_alloc::LibcAlloc;
#[global_allocator]
static ALLOCATOR: LibcAlloc = LibcAlloc;

// std compatibility
use no_std_compat::{prelude::v1::*, vec::Vec};


#[no_mangle]
pub extern "C" fn main(_argc: isize, _argv: *const *const u8) -> isize {

    libc_println!("no-std @Entero{}", "Positivo");

    let mut vec_test: Vec<u8> = Vec::new();
    vec_test.push(10);
    vec_test.push(20);
    vec_test.push(30);

    for v in vec_test{
        libc_println!("Vector-Item = {}", v);
    }

    0
}


#[panic_handler]
fn my_panic(_info: &core::panic::PanicInfo) -> ! {
    libc_println!("panic!:: {}", _info.to_string().as_str());
    
    loop {}
}