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From: Torbjorn Granlund <tg@gmplib.org>
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Date: Mon, 14 Jan 2013 19:14:18 +0100
In-Reply-To: <50F1B339.9010709@twiddle.net> (Richard Henderson's message of
	"Sat\, 12 Jan 2013 11\:02\:17 -0800")
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Subject: Re: [Qemu-devel] 3 new x86 instructions
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To: Richard Henderson <rth@twiddle.net>
Cc: Blue Swirl <blauwirbel@gmail.com>, qemu-devel@nongnu.org

Richard Henderson <rth@twiddle.net> writes:

  > MULX implies a bunch of other instructions due to CPUID flag grouping.
  > ADCX and ADOX can be implemented separately. None of these and the
  > other instructions in the MULX group look very complex.
=20=20
  I've got a patch for (most of?) the bmi[12] insns:
=20=20
    git://repo.or.cz/qemu/rth.git x86-next
=20=20
  This includes general support for the VEX prefixes.
=20=20
Nice!

Is it in such a state that grabbing that repo and building a
qemu-system-x86_64 would give me MULX support?

I realise things might not be as stable as a release, but I can deal
with that.

  But before I did anything else for the adx extension,
  I thought I'd have a look back at Paolo's eflags optimization
  patch series that he posted in October.  Otherwise we'll
  not be able to get really good emulation of these insns.
=20=20
I see.  ADCX and ADOX are several years away, IIUC.

--=20
Torbj=C3=B6rn