Require assembler sections to specify where in virtual memory they begin

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/main.rs

@@ -31,6 +31,7 @@ fn main() -> Result<()> {
         }
     };
     let obj = vm::obj::obj::Object::try_from(&ast)?;
+    //dump(&obj)?;
     let mut vm = vm::vm::Vm::new();
     vm.load_object(obj, 1024 * 1024 * 64)?; // 64mb
     let status = vm.run()?;
@@ -39,23 +40,21 @@ fn main() -> Result<()> {
 }
 
 
-    /*
-fn dump(obj: &Object) {
+fn dump(obj: &vm::obj::obj::Object) -> Result<()> {
     use vm::obj::obj::Section;
     use vm::visit::VisitInst;
     let mut stdout = io::stdout();
     for section in &obj.sections {
         let mut disasm = match section {
-            Section::Code { start, contents, .. }
-            | Section::Data { start, contents, .. } => {
+            Section::Code { start, contents, .. } => {
                 vm::disassemble::Disassemble::new(&mut stdout, contents, *start)
             }
-            Section::Meta { .. } => continue,
+            Section::Meta { .. } | Section::Data { .. } => continue,
         };
         while !disasm.is_done() {
             disasm.visit_inst()?;
         }
         println!();
     }
+    Ok(())
 }
-    */