1) In this PR you can find my test scenarios of bitmask instructions with logical imm
https://github.com/toor1245/freebsd-src/pull/4/files, all possible <imm> for ORR to test
arm64_disasm_bitmask in ddb.
2) Compared all expected immediate values with arm64_disasm_bitmask
https://github.com/toor1245/freebsd-arm64-disasm-bitmask