access saved values of upper xmm/ymm/zmm registers in signal handler

[Joseph Devietti]

Hi there,

I was wondering if there's a way to access the saved values of X86-64's
second set of 16 vector registers (xmm16-31, ymm16-31 and/or zmm16-31)
inside a SA_SIGINFO signal handler, via the ucontext_t* pointer. I've tried
digging around the code and couldn't find anything promising, but maybe I
missed something.

thanks,
joe