1 files changed, 39 insertions, 0 deletions
diff --git a/tests/run-make/uefi-qemu/uefi_qemu_test/src/main.rs b/tests/run-make/uefi-qemu/uefi_qemu_test/src/main.rs
new file mode 100644
index 00000000000..f8e1212a9f6
--- /dev/null
+++ b/tests/run-make/uefi-qemu/uefi_qemu_test/src/main.rs
@@ -0,0 +1,39 @@
+// Code is adapted from this hello world example:
+// https://doc.rust-lang.org/nightly/rustc/platform-support/unknown-uefi.html
+
+#![no_main]
+#![no_std]
+
+use core::{panic, ptr};
+
+use r_efi::efi::{Char16, Handle, RESET_SHUTDOWN, Status, SystemTable};
+
+#[panic_handler]
+fn panic_handler(_info: &panic::PanicInfo) -> ! {
+    loop {}
+}
+
+#[export_name = "efi_main"]
+pub extern "C" fn main(_h: Handle, st: *mut SystemTable) -> Status {
+    let s = b"Hello World!\n\0".map(|c| u16::from(c));
+
+    // Print "Hello World!".
+    let r = unsafe { ((*(*st).con_out).output_string)((*st).con_out, s.as_ptr() as *mut Char16) };
+    if r.is_error() {
+        return r;
+    }
+
+    // Shut down.
+    unsafe {
+        ((*((*st).runtime_services)).reset_system)(
+            RESET_SHUTDOWN,
+            Status::SUCCESS,
+            0,
+            ptr::null_mut(),
+        );
+    }
+
+    // This should never be reached because `reset_system` should never
+    // return, so fail with an error if we get here.
+    Status::UNSUPPORTED
+}