unarmed is a plain C adaptation of Paul Guyot's ARM disassembler from the Einstein project
Paul Guyot wrote an ARM disassembler as part of the Einstein project.
I simply took this existing code, and converted it to plain C and made it compilable without any other dependencies. I also did a little reformatting of the code to match my personal style so I could follow it a little better. Lastly, the format of the output is slightly tweaked.
All the hard stuff was done by Paul. This is simply a minor tweak of his work.
Einstein emulates a Newton, which uses a StrongARM-110 (armv4 instruction set). This disassembler was intended for inspecting the Newton ROM. I do not know if it is suitable for any other purposes or other variants of ARM.
./unarmed <path-to-binary-image>
Unix/Linux:
cc unarmed.c -o unarmed
Mac OS X:
xcrun cc -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/ unarmed.c -o unarmed