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PATCH: Extend .zdebug section support to binutils and ld

Cary Coutant ccoutant@google.com
Tue Oct 26 17:03:00 GMT 2010 
Ping? I'd like to see binutils and gnu ld supporting compressed debug sections.

-cary


On Fri, Aug 6, 2010 at 1:37 PM, Cary Coutant <ccoutant@google.com> wrote:
> On Thu, Jul 22, 2010 at 12:59 PM, Daniel Jacobowitz
> <dan@codesourcery.com> wrote:
>> That doesn't tell me anything.  What is the right thing to do, now
>> that you've made binutils do it?  Do you have to uncompress the
>> section and then apply relocations to it?
>>
>> If you do, there's no separate issue - don't check this in unless
>> objects are marked in such a way that other tools will immediately
>> reject them.
>
> Yes, it would be an improvement to mark compressed sections with a new
> section type and SHF_OS_NONCONFORMING, but the ".zdebug" mechanism is
> already there right now, and it would be nice to have this patch to
> make the utilities work with what the assembler is producing today.
> The renaming convention was established a couple of years ago as a
> cheap way of preventing unaware tools of choking on these sections --
> this patch fixes a bug that was introduced then (trying to apply
> relocations before decompressing), but not actually exposed until gas
> started generating relocatable compressed sections.
>
> I'm not sure I understand why this patch should be held up until we
> implement a more foolproof mechanism. Adding this patch shouldn't
> prevent us from pursuing the better solution, but it will improve
> things in the meantime.
>
> -cary
>
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