[libunwind] Re: dl_iterate_phdr() and libunwind

[David Mosberger-Tang]

Hi Arun,

IIRC, unwinding of static binaries never worked on DWARF-based
platforms (it does work on ia64).  I don't remember exactly what the
problem was but it had to do with finding a way to get access to the
unwind-program-header.  Richard Henderson probably can give you a much
better idea of what should and can be done for this case.

 --david

On 5/11/06, Arun Sharma <address@hidden> wrote:
> Hi David,
>
> I just realized that libunwind doesn't work on statically linked
> binaries on x86-64. The reason is that dl_iterate_phdr() is not
> implemented for statically linked binaries.
>
> But there are some comments in:
>
> src/dwarf/Gfind_proc_info-lsb.c
>
>    else
>      /* Otherwise this is a static executable with no _DYNAMIC.  Assume
>         that data-relative addresses are relative to 0, i.e.,
>         absolute.  */
>
> which seems to indicate it worked on some platform. Do you know which
> platforms had dl_iterate_phdr() working for statically linked binaries?
>
>         -Arun


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