A decompiler written for the conversion of gcc rtl (230r, vregs) into corresponding C code.
We use flex to create a scanner. The file scanner.l, used with flex, generates the lexical scanner in lex.yy.c.
We use GNU Bison to create a parser. The file parser.y, used with bison, generates the parser in parser.tab.c.
The files ast.h and ast.cc define the necessary classes and methods to carry out some minor data flow analysis and the final code generation using the abstract syntax tree obtained from parsing. Code generation is done recursively.
All C++ code involved has been documented, using Doxygen. The documentation is present in the 'doxyout' directory. To view it, simply clone the repository, and then either open the HTML documentation in an internet browser, or compile the LaTeX files and view the resulting PDF documentation.
We have also included a GUI for easier utilization of this decompiler tool. It is present under the 'gui' directory, which further contains the frontend and the backend. Here is an example of the GUI in action!
