(values (int-sap read-only-space-start)
(int-sap (* *read-only-space-free-pointer* n-word-bytes))))
(:dynamic
- (values (int-sap dynamic-space-start)
+ (values (int-sap #!+gencgc dynamic-space-start
+ #!-gencgc (current-dynamic-space-start))
(dynamic-space-free-pointer)))))
;;; Return the total number of bytes used in SPACE.