panic: print location info + message

src/main.rs

@@ -5,6 +5,7 @@
 #![feature(naked_functions)]
 #![feature(never_type)]
 #![feature(alloc_error_handler)]
+#![feature(panic_info_message)]
 // TODO: disallow unused/dead_code when code moves into a lib crate
 #![allow(dead_code)]
 

src/panic.rs

@@ -1,8 +1,18 @@
-use crate::{println, zynq};
+use crate::{print, println, zynq};
 
 #[panic_handler]
 fn panic(info: &core::panic::PanicInfo) -> ! {
-    println!("\nPanic: {}", info);
+    print!("panic at ");
+    if let Some(location) = info.location() {
+        print!("{}:{}:{}", location.file(), location.line(), location.column());
+    } else {
+        print!("unknown location");
+    }
+    if let Some(message) = info.message() {
+        println!(": {}", message);
+    } else {
+        println!("");
+    }
 
     zynq::slcr::RegisterBlock::unlocked(|slcr| slcr.soft_reset());
     loop {}