me and my friend got a computer architecture project and we don't really know how to get to it. I hope you could at least point us in the right direction so we know what to look for. As our proffesor isn't really good at explaining what we really need to do and the subject is rather vague we'll start from the beginning.
Our task is to somehow "edit" GCC to treat some operations differently. For example when you add two char arguments in a .c program it uses addb. We need to change it to f.e. 16bit registers(addl), without using unnecessary parameters during compilation(just regular gcc p.c -o p). Why or will it work doesn't really matter at this point. We'd like to know how we could change something inside GCC, where we can even start looking as I can't find any information about similar tasks besides making plugins/extensions. Is there anything we could read about something like this or anything we could use?
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