diff --git a/src/pmc/packfilebytecodesegment.pmc b/src/pmc/packfilebytecodesegment.pmc
index 498c66684c..f75565a248 100644
--- a/src/pmc/packfilebytecodesegment.pmc
+++ b/src/pmc/packfilebytecodesegment.pmc
@@ -29,8 +29,9 @@ spec.
 #include "pmc/pmc_packfileopmap.h"
 
 pmclass PackfileBytecodeSegment auto_attrs extends PackfileSegment {
-    ATTR PMC  *ops;    /* RIA of executable opcodes */
-    ATTR PMC  *op_map; /* OpMap PMC */
+    ATTR PMC    *ops;       /* RIA of executable opcodes */
+    ATTR PMC    *op_map;    /* OpMap PMC */
+    ATTR INTVAL  main_sub;  /* Index of :main sub */
 
 
 
@@ -98,6 +99,7 @@ Return a pointer to a PackFile_ByteCode* built from this PMC's data.
         bc->base.type = PF_BYTEC_SEG;
 
         /* Create proper ByteCode structure from internal PMCs */
+        GET_ATTR_main_sub(INTERP, SELF, bc->main_sub);
 
         /* Copy ops into ByteCode */
         GET_ATTR_ops(INTERP, SELF, ops);
@@ -261,6 +263,41 @@ Fetch an integer's worth of data from the segment.
 
 /*
 
+=item C<INTVAL elements()>
+
+=item C<INTVAL get_integer()>
+
+=item C<INTVAL get_number()>
+
+Get the number of elements in the array.
+
+=cut
+
+*/
+    VTABLE INTVAL elements() {
+        return VTABLE_elements(INTERP,
+                PARROT_PACKFILEBYTECODESEGMENT(SELF)->ops);
+    }
+
+    VTABLE INTVAL get_integer() {
+        return STATICSELF.elements();
+    }
+
+    VTABLE FLOATVAL get_number() {
+        return STATICSELF.elements();
+    }
+
+
+    METHOD main_sub(INTVAL main_sub :optional, INTVAL got_main :opt_flag) {
+        if (got_main) {
+            SET_ATTR_main_sub(INTERP, SELF, main_sub);
+        }
+        GET_ATTR_main_sub(INTERP, SELF, main_sub);
+        RETURN(INTVAL main_sub);
+    }
+
+/*
+
 =back
 
 =cut