From: "Ananth Sowda" <asowda@gmail.com>
To: "Ananth Sowda" <asowda@gmail.com>, gdb@sourceware.org
Subject: Re: DSO with relocations and GDB.
Date: Mon, 21 Apr 2008 23:26:00 -0000 [thread overview]
Message-ID: <c92b40c80804211126h1fc8a79fk90f1aa5fc1bfb4a0@mail.gmail.com> (raw)
In-Reply-To: <20080419035335.GA22346@caradoc.them.org>
On 4/18/08, Daniel Jacobowitz <drow@false.org> wrote:
> On Fri, Apr 18, 2008 at 03:50:00PM -0700, Ananth Sowda wrote:
> > The powerpc eabi DSO (dynamic shared object) I'm debugging using GDB
> > 6.6 has .debug_info and other debug tables which have unresolved
> > relocations. The .rela_debug_info is available in the DSO and it has
> > sh_link set to .symtab, sh_info to .debug_info. However, the bfd code
> > in GDB 6.6 does not seem to associate the .debug_info with
> > corresponding .rela_debug.info section. When GDB attempts to relocate
> > these debug tables, bfd does not recognize that the section has
> > relocations.
>
> What does objdump -h say about this file? IOW, what do you mean by
> "does not seem to associate"?
BFD internal section data structure for .debug_info section is not
marked with SEC_RELOC in flags and number of relocation records for
the section is 0. objdump -h output shows that sh_link(points to
.symtab) and sh_link(points to .debug_info) are set correctly for the
.rela_debug.info section.
>
> GDB is supposed to handle this case correctly. However, we've also
> pretty well established that the linker is wrong to emit such
> relocations; if you have the option of using a different linker
> version which does not do so, I recommend it.
I agree using a linker which resolves the relocations fixes the problem.
-Thanks
next prev parent reply other threads:[~2008-04-21 18:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-20 2:39 Ananth Sowda
2008-04-20 9:09 ` Daniel Jacobowitz
2008-04-21 23:26 ` Ananth Sowda [this message]
2008-04-21 23:34 ` Daniel Jacobowitz
2008-04-22 20:09 ` Ananth Sowda
2008-04-23 7:28 ` Daniel Jacobowitz
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