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[Bug binutils/22464] x86 gas -n option does not work


From: hjl.tools at gmail dot com
Subject: [Bug binutils/22464] x86 gas -n option does not work
Date: Wed, 22 Nov 2017 00:52:13 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=22464

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
            Version|unspecified                 |2.30 (HEAD)
         Resolution|---                         |WORKSFORME
   Target Milestone|---                         |2.30

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jim Wilson from comment #0)
> I noticed this by accident.  The x86 assembler has a -n option which says to
> emit one byte nops instead of multi-byte nops.  But when I try it, it
> doesn't work.
> 
> rohan:2162$ cat tmp.s
>       .text
>       movl    %edi, %eax
>       .balign 8
>       movl    $0, %edx
>       .balign 8
^^^^^^^^^^^^^^^^^^^^^^^  This needs to be ".balign 8, 0x90".
>       .section ".text.alt"
>       movl    %edi, %eax

I checked in a tesstcase.

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