pdp11-nm

Lists the symbol table of a.out objects, executables, and archives — the 2.9BSD nm.

pdp11-nm [-g] [-n] [-o] [-p] [-r] [-u] [file ...]

• Reads what the era wrote: 12-byte fixed-name nlist entries, the 16-bit n_type with overlay numbers, and __.SYMDEF-bearing archives (the 0177545 magic compares correctly on LP64 via an unsigned-short pin — a real host bug fixed in this revision).
• Sorts alphabetically by default; -n by value, -p in table order, -u undefined only, -g externals only.

Build and test

make          # builds ../../bin/pdp11-nm
make check    # covered by tests/binutils/size_nm_strip.sh at the
              # repo root

Documentation

• Design — the nlist decoders and the sort/format machinery.
• User guide — the options and the output formats.