[Bug gas/29728] bpf: support LLVM BPF pseudo-C assembly syntax

[jose.marchesi at oracle dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29728

--- Comment #4 from Jose E. Marchesi <jose.marchesi at oracle dot com> ---
(In reply to Nick Clifton from comment #3)
> (In reply to Jose E. Marchesi from comment #2)
>  
> >> Is there a specification for this syntax ?
> > AFAIK, no.  It is basically "what LLVM parses".
> 
> Well that sounds bad.  Can you talk to the LLVM community about this ?  A
> proper specification is pretty much essential for compatibility to work.

I will.

However, to be fair on that topic, how many of the assembly language syntax
supported by GAS are formally specified?  Our own BPF assembly syntax certainly
isn't.  (I think it may be possible to generate documentation for it using
CGEN. Never tried though.)

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