[Bug binutils/25445] movsxd without REX_W prefix incorrectly disassembled

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25445

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jan Beulich from comment #5)
> (In reply to H.J. Lu from comment #4)
> > (In reply to Jan Beulich from comment #3)
> > > (In reply to H.J. Lu from comment #0)
> > > >    0:   66 63 08                movslq (%rax),%cx
> > > 
> > > Looks correct to me.
> > 
> > movslq is AT&T syntax for 32 bits -> 64 bits. It isn't accepted by
> > assembler.  movsxd should be here.
> 
> MOVSXD, like MOVSX and MOVZX, is Intel syntax, and hence has nothing to do
> in AT&T syntax disassembly.
> 

There is no such an instruction of "movslq (%rax),%cx".

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