How to output an executable
I am writing a program that compiles some code and tries to output an executable file for windows/dos (I kow... do it in c... but the point is that at some later stage I want to port it to solaris/linux/unix/os2... ) so I wanted to know if someone knew how to write executable code to a disk file. Sample code will be appreciated.
Well I think that you will have to read the "Compiler Construction" book for the language who�s source code you are trying to compile. Generating an .exe file from a source code requires a lot of steps.
- Tokenizing
- Lexical Analysis
- Parsing (top down, bottom up, recursive, non-recursive, forward chaining, desent, predictive, non-predictive, multi-threaded etc. etc. are a few techniques to implement your parser)
- Generating two-address code
- Optimization
- Machine Language Conversion
- Assembling
- Linking
etc. etc.
And before you do all of this you have to know the complete Grammar of your language and then depending on the type of your parser you will have to create the first and follow sets and manage your state manipulations and error recovery techniques. You can find a lot of books on creating parsers for every available language in the market.
I implemented a compiler for Pascal in my college days (it was part of the curriculum, so no big deal.... ;-) ), two of the books I used that I still remember were
- Compiler Design by Renhard Wilhelm
- Principles and Practice of Compiler Construction by Kenneth Louden
Hope that I have not completely off shooted from the actual question.
Regards
Omer
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