propose output layout

crates/vestal/src/main.rs

@@ -80,7 +80,8 @@ fn main () -> Usually<()> {
             .search(canonicalize(path.clone().parent().expect("invalid parent path"))?)
             .search("/home/user/Lab/Cosmo/wineprefix/drive_c/windows/system32")
             .load(true)?
-            .resolve(true)?;
+            .resolve(true)?
+            .relink()?;
     } else {
         println!("Pass a path to a VST DLL");
     }
@@ -151,6 +152,34 @@ impl Module {
         }
         Ok(module)
     }
+    /// Build an ELF executable out of the DLL
+    fn relink (self: Arc<Self>) -> Usually<Arc<Self>> {
+        let page = 32*1024;
+        let mut size = 0;
+        for module in self.namespace.read().unwrap().values() {
+            size += module.code_size.div_ceil(page);
+        }
+        println!("\n{}", fmt_num(size*page));
+        let mut layout: BTreeMap<usize, Arc<Self>> = Default::default();
+        let mut index = 0;
+        let mut append = |module: &Arc<Self>|{
+            println!("{} [+{}] {:16}",
+                fmt_num(index),
+                fmt_num(module.code_size),
+                module.name);
+            layout.insert(index, self.clone());
+            index += module.code_size.div_ceil(page) * page;
+        };
+        append(&self);
+        for module in self.namespace.read().unwrap().values() {
+            if module.name == self.name {
+                continue;
+            }
+            append(module);
+        }
+        let mut output = vec![0x90;size];
+        Ok(self)
+    }
 }
 
 fn to_dll_name (path: &impl AsRef<Path>) -> Arc<str> {