Mostly more working with libffi; swapping some ideas back and forwards with Marcus Shawcroft and it looks like we have a good way forward.
Got an armhf chroot going, libffi built. Got a testcase failing as expected. Trying to look at other processors ABIs to understand why varargs works for anyone else.
Cut through one layer of red tape; can now do the next level of comparison in the string routine work.
Started looking at SPEC; hit problems with network stability on VExpress (turns out to be bug 673820)
long long weekend; short weeks=2;
Back in on Tuesday.
Dave