/usr/bin/h8300-hms-c++filt is in binutils-h8300-hms 2.16.1-10+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/h8300-hitachi-coff-c++filt
/usr/bin/h8300-hitachi-coff-c++filt