[ros-users] roscpp on embedded devices with ethernet?

I've been searching the archives for info on this topic but everything I turn up is pretty ancient.

Suppose you have an embedded device that has an ethernet controller and enough oomph to run a TCP stack and an RTOS, for instance an ARM Cortex-M3. Is it possible to run roscpp on the bare metal, or does roscpp depend on a lot of Linux system services? Of course, rosserial would be an option, but if you have an ethernet controller on chip, that seems limiting. Or is there another light-weight ROS comms on TCP that I don't know about?

-dave