On Sat, Mar 19, 2016 at 12:13:47AM +0800, Eli Cooper wrote:
> I agree that we should keep userspace() minimal. So what in the first
> place is the FPU state save/restore code for? Or, what (except for
> sigreturn) could possibly mess the FPU state of the ptrace'd process
> without it?
My (vague) recollection was that with libc in there, I couldn't be
confident that it wouldn't unexpectedly use FP for something. So,
saving and restoring FP state was a hedge against that happening.
Jeff
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Jeff Dike
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