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Subject: Re: [Question] Is there a way to specify an offset to the loaded
 symbols?
From: "Marten Ringwelski" <work@maringuu.de>
To: "Christian Biesinger" <cbiesinger@google.com>, "Marten Ringwelski"
 <git@maringuu.de>
Cc: "Reuben Thomas via Gdb" <gdb@sourceware.org>
Date: Thu, 29 Oct 2020 16:26:41 +0100
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On Thu Oct 29, 2020 at 2:29 PM CET, Christian Biesinger wrote:
> On Thu, Oct 29, 2020 at 9:23 AM Marten Ringwelski <git@maringuu.de>
> wrote:
> >
> > Hello,
> > for some reason that is not important here I need to debug a binary tha=
t is executed by calling the linker manually.
> > In my case I do `/lib/ld-musl-x86_64.so.1 binary`.
> > The problem with this is that gdb now obviously thinks that I want to d=
ebug `/lib/ld-musl-x86_64.so.1`. This is not the case.
> > Loading the symbols from `binary` does not help since the the linker lo=
ads the process into memory and the jumps to its main.
> >
> > In other words I have the symbols for the binary to be debugged but the=
 binary is loaded into memory with an offset so the symbols are offseted.
> > Is there any way to get this working?
>
> add-symbol-file lets you specify an address but maybe it's easier if
> you just use patchelf --set-interpreter to make it use
> /lib/ld-musl-x86_64.so.1

Thank you, that was easier than expected!