Hello everyone, As a proof of concept, I am trying to extend the gcc spu backend to produce a few new assembly instructions, specifically loads and stores of the form
Load rt, s2(s18) Store s2(s18), rc However after searching and reading a lot of documentation, I still cannot figure out all the files that need to be editted in order for gcc to output an instruction and understand how that instruction works. Currently I have it detecting the 'store' is an incorrect mnemoic (because I got define_inst outputting it). I would like to know if there are any recommended tutorials on how to add a instruction to the assembly language, and if there is an easier backend port that I should experiment on until I learn how to deal with all the components of RTL. Note, this is a proof of concept, so I only need to be able to output the instructions, not assemble them or even verify that they are the correct bit size. Thanks for your help, Gobi
