#define BF_PINNED 4
/* Block is part of a compacted generation */
#define BF_COMPACTED 8
-/* Block is free, and on the free list */
+/* Block is free, and on the free list (TODO: is this used?) */
#define BF_FREE 16
+/* Block is executable */
+#define BF_EXEC 32
/* Finding the block descriptor for a given block -------------------------- */