bin-tools: data and code size

Hi everybody,

I have been refactoring some C to C++ code. I have measured the
performance improvement using an ETM debugger. Now I would want to
evaluate the variation in the code and data size, so I use arm-elf-size
but I just get the size of the different sections not the allocated and
free regions within those sections.

Which tool should I use? I have tried with other bintools but
unsuccessfully.

Thank you very much for your help. Best regards.