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Date: Tue, 10 Jan 2023 21:02:00 +0100
From: Hauke Mehrtens <hauke@...ke-m.de>
To: musl@...ts.openwall.com, Rich Felker <dalias@...c.org>
Cc: d.dorau@....de, Hauke Mehrtens <hmehrtens@...linear.com>
Subject: Re: Tracking shared libraries in GDB not working?
On 1/9/22 06:14, Rich Felker wrote:
> On Mon, Dec 20, 2021 at 09:54:40AM +0100, d.dorau@....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
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