Re: [musl] Tracking shared libraries in GDB not working?

[Hauke Mehrtens <hauke@hauke-m.de>]

On 1/9/22 06:14, Rich Felker wrote:
> On Mon, Dec 20, 2021 at 09:54:40AM +0100, d.dorau@avm.de wrote:
>> Thanks for your thoughts. I used them to search for further information and found
>> the missing piece:
>>
>> https://lists.yoctoproject.org/g/yocto/message/48584
>>
>> I applied that first patch
>> https://lists.yoctoproject.org/g/yocto/attachment/48584/0/0007-Teach-dynlink.c-about-DT_MIPS_RLD_MAP_REL.patch
>>
>> and apparently it seems to solve the issue. :-)
>>
>> I did a search on this mailing list and couldn't find this patch mentioned here.
>> Maybe you can include this patch in a future release if you think the solution is correct.
> 
> Thanks! This patch is not correct as-is, because the value of
> DT_MIPS_RLD_MAP_REL is only meaningful on mips and could be reused on
> other archs. But I've whipped up what I think is a correct version of
> it here (attached), using the same approach as used for
> DT_MIPS_RLD_MAP already. If you get a chance, please let me know if it
> works.
> 
> Rich
Hi Rich,

I tried your attached patch on a mips32 be system and it worked. With 
this patch gdb was able to find the shared libraries which were loaded 
with dlopen(). I tested this on OpenWrt 19.07 with musl 1.1.24 and gdb 
8.3.1 using gdbserver.

It would be nice if you could add it to upstream musl libc.

Hauke