It's not unusual. Lots of Lisp systems support inline assembler or inline C. Historically Lisp systems stored compiled code as LAP (Lisp Assembly Program) and l

It's not unusual. Lots of Lisp systems support inline assembler or inline C. Historically Lisp systems stored compiled code as LAP (Lisp Assembly Program) and loaded these files via its built-in assembler. The old Lisp 1.5 manual documents an in-memory assembler in Appendix C, Page 73 http://www.softwarepreservation.org/projects/LISP/book/LISP%201.5%20Programmers%20Manual.pdf http://www.softwarepreservation.org/projects/LISP/book/LISP%...