Reverse Engineering

[nicsin]

Hi,

we have some legacy code written in C and would like to modify it and further develop it. Does anybody know of any tools that could draw structure diagrams from source code, which will help us understand more about it?

Thnx a lot

 

[Hammer]

Can't say I've used this much, but here's a link:

http://www.scitools.com/

(Understand for C++, which includes C)

 

[xwb]

It really depends on the code. I've found in the past that structure diagrams are useful only on certain code layouts. Structure diagrams for state machines aren't very much help. They aren't really useful on multi-threaded systems either.

Sometimes it is easier to set various breakpoints, send some data through and see where it ends up, then work out what you need from there.

 

[ArkM]

Try Doxygen:

http://www.stack.nl/~dimitri/doxygen/

Doxygen is the best (I think documentation system for C++ projects, but it understands C too and can be used with uncommented specially (legacy, for example) codes...

 

[nicsin]

Thank you people. i tend to agree with xwb but the boss thinks otherwise so... I will try your suggestions though!

Thanks again