[Yellowstone] Wireframe for moving yellowstone to rust.

rust/sys/yellowstone/src/main.rs

@@ -0,0 +1,48 @@
+#![no_std]
+#![no_main]
+
+extern crate alloc;
+
+use mammoth::{
+    cap::Capability,
+    define_entry, elf,
+    zion::{kZionPerm_Read, z_cap_t, z_err_t, ZError},
+};
+use yellowstone_yunq::YellowstoneServer;
+use yunq::server::YunqServer;
+
+mod server;
+
+define_entry!();
+
+fn spawn_from_vmmo(vmmo_cap: z_cap_t, server_cap: Capability) -> Result<(), ZError> {
+    let region = mammoth::mem::MemoryRegion::from_cap(Capability::take(vmmo_cap))?;
+    elf::spawn_process_from_elf_and_init(region.slice(), server_cap)?;
+    Ok(())
+}
+
+#[no_mangle]
+extern "C" fn main() -> z_err_t {
+    let context = alloc::rc::Rc::new(
+        server::YellowstoneServerContext::new().expect("Failed to create yellowstone context"),
+    );
+    let handler = server::YellowstoneServerImpl::new(context.clone());
+    let server = YellowstoneServer::new(handler).expect("Couldn't create yellowstone server");
+
+    let server_thread = server.run_server().expect("Failed to run server");
+
+    spawn_from_vmmo(
+        unsafe { mammoth::init::BOOT_DENALI_VMMO },
+        server
+            .create_client_cap()
+            .expect("Failed to create client cap for denali"),
+    )
+    .expect("Failed to spawn denali");
+
+    context.wait_denali().expect("Failed to wait for denali");
+
+    mammoth::debug!("Denali registered.");
+
+    server_thread.join().expect("Failed to join thread");
+    0
+}