feat: basic IPC

userspace/client/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "client"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+dusk-sys = { path = "../dusk-sys" }
+
+[[bin]]
+name = "client"
+test = false
+bench = false

userspace/client/src/main.rs

@@ -0,0 +1,26 @@
+#![no_std]
+#![no_main]
+
+use dusk_sys::{println, sys_exit, sys_recv, sys_send};
+
+#[unsafe(no_mangle)]
+pub extern "C" fn _start() -> ! {
+    let msg = "Hello from client!";
+    println!("[client] Sent: {}", msg);
+    sys_send(0, msg.as_ptr() as usize, msg.len()).unwrap();
+    let out = [0u8; 128];
+    let out_ptr = out.as_ptr() as usize;
+    let max_len = out.len();
+    let (actual_len, sender) = sys_recv(out_ptr, max_len).unwrap();
+    println!(
+        "[client] Received: {}",
+        core::str::from_utf8(&out[..actual_len]).unwrap()
+    );
+    sys_exit(0);
+}
+
+#[panic_handler]
+fn panic(info: &core::panic::PanicInfo) -> ! {
+    println!("{info}");
+    sys_exit(1);
+}