Re: Aw: hppa qemu and string functions

[Jeff Law <law at redhat dot com>]

On 11/09/2016 07:51 AM, Helge Deller wrote:
> Hi Richard,
>
> > Off and on, I've been working on a user-only target of hppa to qemu.  It's now
> > about 95% working.  If anyone would like to try it out, it's available at
> >    git://github.com/rth7680/qemu.git tgt-hppa
>
> COOL!
> I'm happy to test, but can you shortly describe the required steps how I can build & test it?
>
> With "user-only target of hppa" I assume this means that I can run hppa binaries
> on e.g. x86-64, similiar to what is described here: https://wiki.debian.org/QemuUserEmulation ?
>
> > While implementing the unit-type instructions, I wondered why no one (outside
> > hp?) had written a version of the string routines utilizing the UXOR insn, with
> > the SomeByteZero and NoByteZero conditions.
>
> Interesting.
> I assume nobody did, because there are a few hppa/linux/glibc users anyway ? :-)
Probably a safe assumption.  I'm pretty sure the hpux string routines 
used uxor.  There was also at least one hpux routine in libc which used 
the branch-in-delay-slot-of-branch trick, but I can't recall why it was 
useful.

jeff