On Wed, 2 May 2012, Ben Morgan wrote: > Hello, > > In a course at my university (Universität Würzburg, Germany) we have > created a 32-bit RISC CPU architecture -- the HaDesXI-CPU -- (in VHDL) > which we then play onto a FPGA (the Xilinx Spartan-3AN) to use. So far > if we want to do anything with it, we have to write the assembly code > ourselves. > > How much work would it be to write a HadesXI backend for GCC?
I remember "6 months and more of full-time work for a skilled developer" mentioned on this mailing list. > Where would be a good place to start; what are the prerequisites for > undertaking a project like this other than knowing the CPU architecture > inside out? I recommend reading "The GGX patch archive" blog entries to get a "big picture" of the steps involved. It was available at spindazzle.org/ggx, but at the moment you'll have to browse it via The Internet Archive ( http://web.archive.org/web/20100117171845/http://spindazzle.org/ggx/ ). Apart from that, the GCC wiki has accumulated many resources, especially in the GettingStarted section ( http://gcc.gnu.org/wiki/GettingStarted ). Alexander
