I've pushed changes to the JIT to add an ARM back-end, which is based on Paulo César Pereira de Andrade's very nice implementation of GNU lightning for ARM.
The generated code uses Thumb and VFP instructions when available, and floating-point arithmetic is unboxed as on x86. Places should work, although they're not currently enabled by default. I have not yet added support for futures, and that will probably wait until someone has a use for them. _________________________ Racket Developers list: http://lists.racket-lang.org/dev