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79 lines
1.6 KiB
Rust
79 lines
1.6 KiB
Rust
#![no_std]
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#![feature(alloc_error_handler)]
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use core::fmt::Write;
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use core::panic::PanicInfo;
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use heapless::consts::*;
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use heapless::String;
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extern crate linked_list_allocator;
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use linked_list_allocator::*;
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#[global_allocator]
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static mut HEAP: LockedHeap = LockedHeap::empty();
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extern crate alloc;
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use alloc::vec::Vec;
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extern crate cty;
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extern "C" {
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fn putchar(c: cty::c_char) -> ();
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fn crash() -> ();
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}
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pub fn print(s: &str) {
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for c in s.bytes() {
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unsafe { putchar(c) };
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}
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}
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#[no_mangle]
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pub extern "C" fn rust_main() -> ! {
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print("Rust\r\n");
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const HEAP_SIZE: usize = 2048;
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static mut HEAP_AREA: [u8; HEAP_SIZE] = [0; HEAP_SIZE];
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unsafe { HEAP = LockedHeap::new(&HEAP_AREA[0] as *const u8 as usize, HEAP_AREA.len()) };
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let mut s: String<U128> = String::new();
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let mut xs = Vec::new();
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for i in 2..=3 {
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xs.push(i);
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xs.push(-3 * i);
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xs.push(i);
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writeln!(s, "i {}\r", i).unwrap();
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print(&s);
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s.clear();
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writeln!(s, "{}\r", 10.0 / i as f64).ok();
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print(&s);
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if xs.pop().unwrap() != i {
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panic!("??");
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}
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}
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xs.sort();
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writeln!(s, "{:?}\r", xs).unwrap();
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print(&s);
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panic!("test");
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}
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#[panic_handler]
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fn panic(panic_info: &PanicInfo) -> ! {
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unsafe {
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putchar('!' as u8);
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}
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let mut s: String<U128> = String::new();
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writeln!(s, "{}\r", panic_info).ok();
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print(&s);
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unsafe {
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crash();
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}
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loop {}
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}
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#[alloc_error_handler]
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fn alloc_error(_: core::alloc::Layout) -> ! {
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panic!("Heap");
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}
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