feat: full no_std support

Signed-off-by: Henry Gressmann <mail@henrygressmann.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/examples/rust/src/hello.rs b/examples/rust/src/hello.rs
new file mode 100644
index 0000000..34f3c7f
--- /dev/null
+++ b/examples/rust/src/hello.rs
@@ -0,0 +1,18 @@
+#![no_std]
+#![no_main]
+
+#[cfg(not(test))]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    core::arch::wasm32::unreachable()
+}
+
+#[link(wasm_import_module = "env")]
+extern "C" {
+    fn printi32(x: i32);
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn add_and_print(lh: i32, rh: i32) {
+    printi32(lh + rh);
+}