Re: How to add a language? (off-topic?)

[Peter Gerwinski <peter at gerwinski dot de>]

His Holiness the Reverend Doktor Xenophon Fenderson, the Carbon(d)ated wrote:
> [...]  Where in the
> code should I start looking to figure out how GCC, G++, GNU FORTRAN,
> etc. all work together, and how to get access to (and use) the code
> generation routines?  Is there any documentation (aside from gcc.texi
> and the source code) that I should be reading?

You need to learn about "tree nodes".  You can read

  - section "Tree nodes" of the documentation of the GNU Pascal
    Compiler (GPC) which is intended to cover exactly this topic
    (see ftp://agnes.dida.physik.uni-essen.de/gnu-pascal/beta/),

  - the GCC source files `tree.def', `tree.h', and `tree.c';

after that you can start reading the GCC (or GPC;-) source,
starting with the parser `*parse.y', then continuing with the
routines directly called by the parser.

Code generation is then done within `rest_of_*_compilation()'.
These are the routines where the front-end stops and the
back-end starts.

(Of course you can also ignore all this and find your own
approach.;-)

HTH,

    Peter

-- 
Peter Gerwinski, Essen, Germany, http://home.pages.de/~Peter.Gerwinski/
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