as understands the following addressing modes for the SH.
Rn in the following refers to any of the numbered registers, but not the control registers.
Register indirect with pre-decrement
Register indirect with post-increment
Register indirect with displacement
PC relative address (for branch or for addressing memory). The
as implementation allows you to use the simpler form addr anywhere a PC relative address is called for; the alternate form is supported for compatibility with other assemblers.