I am assuming that the major reason that you wanted to do this is that SPARC is big-endian. It works in the native order of TCP/IP, and the hton/ntoh macros are null at the socket level in C.
NetBSD can run Raspberry Pis big-endian. This is a much easier platform to obtain and configure than SPARC.
The targets appear to be earmv7hfeb and aarch64eb.
NetBSD can run Raspberry Pis big-endian. This is a much easier platform to obtain and configure than SPARC.
The targets appear to be earmv7hfeb and aarch64eb.
https://wiki.netbsd.org/ports/evbarm/