initial commit

crates/haku-wasm/src/panicking.rs

@@ -0,0 +1,20 @@
+use core::fmt::Write;
+
+use alloc::string::String;
+
+extern "C" {
+    fn panic(message_len: u32, message: *const u8) -> !;
+}
+
+fn panic_impl(info: &core::panic::PanicInfo) -> ! {
+    let mut message = String::new();
+    _ = write!(&mut message, "{info}");
+
+    unsafe { panic(message.len() as u32, message.as_ptr()) };
+}
+
+#[cfg(not(test))]
+#[panic_handler]
+fn panic_handler(info: &core::panic::PanicInfo) -> ! {
+    panic_impl(info)
+}