On Sun, May 31, 2020 at 12:13:18PM -0400, Keno Fischer wrote: > > Keno -- are you planning to send out a patch? You previously spoke about > > implementing this using PTRACE_SETOPTIONS. > > Yes, I'll have a patch for you. Though I've come to the conclusion > that introducing a new regset is probably a better way to solve it. > We can then also expose orig_x0 at the same time and give it sane semantics > (there's some problems with the way it works currently - I'll write it up > together with the patch).
I'd worry that having a new ptrace option would be useless bug- compatibility that is just going to bitrot. Can you explain why userspace would write a changed value for x7 but at the same time need that new to be thrown away? That sounds like a nonsensical thing for userspace to be doing. Cheers ---Dave
