Actually... on the Hitachi support site, there is one for SH4 CE 2.11 HPCS... Might not work on an SH3.. though its worth a try I guess...
http://www.hitachiserviceusa.com/ftproot/HPW630ETR/Adobe%20PDF%20reader%20beta.zip
When I first came across this little gem, I was quite shocked. I always believed
(along with most of the HPC community
)that Adobe was reluctant to develop a HPC specific version of Acrobat Reader. Yet...this exists. Could there also be an ARM and MIPS version out there? I sure hope so. Though, I wouldn't know where to look.