x86_64 call & ret

src/arch/x86_64/encode.rs

@@ -106,6 +106,15 @@ impl Encoder {
         self.data.extend([0x0f, 0x05])
     }
 
+    pub fn call(&mut self, sym: Symbol) {
+        self.data.push(0xe8);
+        self.sym_offset4(sym);
+    }
+
+    pub fn ret(&mut self) {
+        self.data.push(0xc3);
+    }
+
     /// inserts a 32 bit offset from a symbol
     pub fn sym_offset4(&mut self, sym: Symbol) {
         let Some(addr) = self.sym_tab.get(sym) else {
@@ -123,6 +132,8 @@ impl Encoder {
             Instr::Int { code } => self.int(code),
             Instr::Syscall => self.syscall(),
             Instr::Lea { dst, sym } => self.lea(dst, sym),
+            Instr::Call(sym) => self.call(sym),
+            Instr::Ret => self.ret(),
         }
         Ok(())
     }