/usr/x86_64-linux-gnu/aarch64-linux-gnu/lib/libopcodes.so is in binutils-aarch64-linux-gnu 2.24-1ubuntu1cross0.11.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/x86_64-linux-gnu/aarch64-linux-gnu/lib/libopcodes-2.24.so