Re: [Qemu-devel] Bug report about x86 'bt' insn

[malc]

On Sat, 6 Nov 2010, Torbjorn Granlund wrote:

> malc <address@hidden> writes:
> 
>   ZF is undefined according to AMD's 24594.pdf page 69.
>   
> Ah, you're right.  It seems that all existing x86 implementations leave
> ZF alone, though.  (I am not arguing that qeum is broken, the bug is in
> my code.)
> 
> I apologize for the false alarm!

Well, it's not as false as one would imagine, since QEMU sets lazy
eflags evaluation function to SAR[BWL] in BT case which is not so
good from performance standpoint.

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