It's been too long and I've forgotten too much about how LLVM works. The gcc port I linked to, BTW, claims to have VC4 binutils. Random question: how did you d

It's been too long and I've forgotten too much about how LLVM works. The gcc port I linked to, BTW, claims to have VC4 binutils. Random question: how did you do 64 bit arithmetic? I couldn't find any kind of add-with-carry or subtract-with-carry instruction. I was semi-resigning myself to have to do a compare-and-test as well as the add, which would have more than doubled the amount of work. Also, nice work reverse engineering the ARM controller --- how did you get the info?