Hi -

> [...one configuration...]
> assembles instructions correctly except immediates and displacements
> are, of course, big endian.
> [...another configuration...]
> assembles instructions correctly except immediates and displacements
> are still not correct and relocations cannot be handled by
> the generic relocation handler since instruction bytes are now fetched
> in little endian order. 
> [...]

Have you tried custom ifield inserters/extractors?
Probably the first configuration is a better fit.

- FChE