llvm dev - Aug 2015 - enumerate symbols in RuntimeDyld

Hi All

Is there any technical reason why we can’t or shouldn’t have RuntimeDyld be able
to enumerate all symbols in the dyld?

I know elf, mach-o apis have this capability, and I’m reasonably sure coff has
support for it as well.

Hi Andy,

There's no technical reason we couldn't enable iteration over the
JIT's
symbol tables. In practice nobody has needed it yet, since you can iterate
over the symbols of everything that you put in to the JIT (IR, objects).

Is there a particular use case that you had in mind for this?

Cheers,
Lang.


On Mon, Aug 24, 2015 at 8:04 AM, Andy Somogyi via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi All
>
> Is there any technical reason why we can’t or shouldn’t have RuntimeDyld
> be able to enumerate all symbols in the dyld?
>
> I know elf, mach-o apis have this capability, and I’m reasonably sure coff
> has support for it as well.
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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I think the reason why I originally looked for this capability is as a
diagnostic measure. I was having issues being able to find symbols in a dyld, so
I wanted to enumerate the symbols to see which ones are actually there.

I did eventually resolve the issue, and yes, I think in production, enumerating
the symbols would have limited use, but I still think this capability would be
useful for development/diagnostics.

> On Aug 26, 2015, at 7:27 PM, Lang Hames <lhames at gmail.com> wrote:
> 
> Hi Andy,
> 
> There's no technical reason we couldn't enable iteration over the
JIT's symbol tables. In practice nobody has needed it yet, since you can
iterate over the symbols of everything that you put in to the JIT (IR, objects).
> 
> Is there a particular use case that you had in mind for this?
> 
> Cheers,
> Lang.
> 
> 
> On Mon, Aug 24, 2015 at 8:04 AM, Andy Somogyi via llvm-dev <llvm-dev at
lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> Hi All
> 
> Is there any technical reason why we can’t or shouldn’t have RuntimeDyld be
able to enumerate all symbols in the dyld?
> 
> I know elf, mach-o apis have this capability, and I’m reasonably sure coff
has support for it as well.
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
<http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev>
> 
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