[LLVMdev] interest in an .eh_frame parser in llvm?

[Eric Christopher]

On Sun Dec 21 2014 at 10:13:07 AM Philip Reames <listmail at philipreames.com>
wrote:

>
> On 12/18/2014 06:58 PM, Kevin Modzelewski wrote:
>
> I'd be interested in that, though would it be an issue if it doesn't have
> an in-tree user?
>
> Quite possibly.  It would bit rot if nothing else.
>
> At minimum, we need a dumper tool - possibly an option to an existing one
> - which produces human readable output and a bunch of lit tests to ensure
> it's not broken by other changes.  In particular, we need to make sure that
> the in tree parser can parse the sections llvm itself is producing.
>
>
Yeah, that's why I was mentioning throwing it into lib/DebugInfo. That way
llvm-dwarfdump or llvm-objdump could dump the sections that we produce.

-eric


> p.s. One thing I think we need to be very careful to document is that this
> .eh_frame parser is version locked to the same version of llvm and is only
> guaranteed to parse output from that version of llvm.  I'm not opposed to
> trying to be more generic, but I suspect that would involve a lot more
> work.
>
>
> On Mon, Dec 15, 2014 at 11:09 PM, Sanjoy Das <
> sanjoy at playingwithpointers.com> wrote:
>>
>> Hi all,
>>
>> Our use case for LLVM requires us to parse the .eh_frame sections
>> emitted by MCJIT (for callee-saved-register spill slots, amongst other
>> things).  Does it make sense to have an in-tree parser for .eh_frame,
>> given that it will make such tasks a lot easier?
>>
>> -- Sanjoy
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