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Date: Wed, 18 Jan 2023 00:14:28 +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 1/10/23 21:02, Hauke Mehrtens wrote:
> 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
Hi,
This is also working fine for me with recent OpenWrt master using musl
1.2.3, gcc 12.2 and gdb 12.1.
Hauke
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