work

src/arch/x86_64/mod.rs

@@ -20,9 +20,15 @@ pub struct X86_64;
 
 impl Arch for X86_64 {
     const NAME: &str = "x86_64";
-    type Asm = Code;
+    type Asm = Asm;
     type Addr = u64;
+    type CallConv = CallConv;
     fn compile(p: &Program<Self>) -> Result<LinkedProgram<Self::Addr>, CompilerMsg> {
         compile(p)
     }
 }
+
+pub struct CallConv {
+    volatile: Vec<Reg>,
+    nonvolatile: Vec<Reg>,
+}