diff --git a/ll.py b/ll.py
index 81a9415..3fa27d7 100644
--- a/ll.py
+++ b/ll.py
@@ -217,6 +217,17 @@ def gdecl2s(gdecl):
             .format(gdecl.name, ty2s(gdecl.ty), ginit2s(gdecl.body)))
 
 
-def ll_encode(s):
-    # TODO
-    return s
+def ll_encode(string):
+    res_l = []
+    for c in string:
+        code = ord(c)
+        if code <= 31 or code == 127:
+            res_l.append('\{:02X}'.format(code))
+        elif c == '\\':
+            res_l.append('\\\\')
+        elif c == '"':
+            res_l.append('\\22')
+        else:
+            res_l.append(c)
+
+    return ''.join(res_l)