1 files changed, 34 insertions, 3 deletions
diff --git a/src/backend/generator/assembly.scm b/src/backend/generator/assembly.scm
index 205900b..1593a07 100644
--- a/src/backend/generator/assembly.scm
+++ b/src/backend/generator/assembly.scm
@@ -6,13 +6,44 @@
             mov-ir))
 
 
+(define r10 (reg-ir "r10"))
+(define r11 (reg-ir "r11"))
+
 (define (instrs-ir lst)
   (cons 'list (cons (list 'alloc-ir (abs (get-frame-size)))
                     (merge-instr lst))))
 
+;; no change
+(def-ir-nodes
+  neg-ir
+  not-ir
+  ret-ir)
+
 (define (mov-ir src dst)
+  (handle-double-mem? 'mov-ir src dst))
+
+(define (plus-ir src dst)
+  (handle-double-mem? 'plus-ir src dst))
+
+(define (minus-ir src dst)
+  (handle-double-mem? 'minus-ir src dst))
+
+(define (mult-ir src dst)
+  (if (eq? 'stack-ir (car dst))
+      (list (list 'mov-ir dst r11)
+            (list 'mult-ir src r11)
+            (list 'mov-ir r11 dst))
+      (list 'mult-ir src dst)))
+
+(define (div-ir src)
+  (if (eq? 'imm-ir (car src))
+      (list (list 'mov-ir src r10)
+            (list 'div-ir r10))
+      (list 'div-ir src)))
+
+(define (handle-double-mem? op src dst)
   (if (and (eq? 'stack-ir (car dst))
            (eq? 'stack-ir (car src)))
-      (append (list (list 'mov-ir src (reg-ir "r10d")))
-              (list (list 'mov-ir (reg-ir "r10d") dst)))
-      (list 'mov-ir src dst)))
+      (list (list 'mov-ir src r10)
+            (list op r10 dst))
+      (list op src dst)))