softeners: platforms: use ctor to register platforms

Cargo.toml

@@ -14,6 +14,7 @@ members = ["cli", "fpgad_macros"]
 
 [dependencies]
 fpgad_macros = { path = "fpgad_macros" }
+ctor = "0.4.2"
 log = "0.4.27"
 env_logger = "0.11.8"
 tokio = { version = "1.46.1", features = ["full"] }

fpgad_macros/src/lib.rs

@@ -24,19 +24,23 @@ pub fn platform(args: TokenStream, input: TokenStream) -> TokenStream {
         }
     }
     let compat_string = compat_string.expect("compat_string must be provided");
+    let register_fn_name = syn::Ident::new(
+        &format!("{struct_name}_register_platform"),
+        struct_name.span(),
+    );
 
     // Generate code to register the platform
     let expanded = quote! {
         #input_struct
 
-        impl #struct_name {
-            #[doc(hidden)]
-            pub fn register_platform() {
-                crate::platforms::platform::register_platform(
-                    #compat_string,
-                    || Box::new(Self::new())
-                );
-            }
+        #[doc(hidden)]
+        #[allow(non_snake_case)]
+        #[ctor::ctor]
+        fn #register_fn_name() {
+            crate::platforms::platform::register_platform(
+                #compat_string,
+                || Box::new(#struct_name::new())
+            );
         }
     };
     TokenStream::from(expanded)

src/main.rs

@@ -23,21 +23,11 @@ mod platforms;
 mod softeners;
 mod system_io;
 
-use crate::{
-    comm::dbus::{control_interface::ControlInterface, status_interface::StatusInterface},
-    platforms::universal::UniversalPlatform,
-    softeners::xilinx_dfx_mgr::XilinxDfxMgrPlatform,
-};
-
-fn register_platforms() {
-    XilinxDfxMgrPlatform::register_platform();
-    UniversalPlatform::register_platform();
-}
+use crate::comm::dbus::{control_interface::ControlInterface, status_interface::StatusInterface};
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
-    register_platforms();
 
     // Upon load, the daemon will search each fpga device and determine what platform it is
     // based on its name in /sys/class/fpga_manager/{device}/name

src/softeners/xilinx_dfx_mgr.rs

@@ -37,6 +37,7 @@ impl XilinxDfxMgrPlatform {
         }
     }
 }
+
 impl Platform for XilinxDfxMgrPlatform {
     fn fpga(
         &self,