Freestanding binary

Cargo.toml

@@ -4,4 +4,11 @@ version = "0.1.0"
 authors = ["greg <greg.shuflin@protonmail.com>"]
 edition = "2018"
 
+[profile.dev]
+panic = "abort"
+
+[profile.release]
+panic = "abort"
+
 [dependencies]
+

src/main.rs

@@ -1,3 +1,14 @@
-fn main() {
-    println!("Hello, world!");
+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> !{
+  loop {}
+}
+
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+  loop {}
 }