From: Alan Modra <amodra@gmail.com>
To: will schmidt <will_schmidt@vnet.ibm.com>
Cc: Ulrich Weigand <uweigand@de.ibm.com>,
gdb-patches@sourceware.org, rogerio <rogealve@br.ibm.com>,
"Carl E. Love" <cel@us.ibm.com>
Subject: Re: gdb compile for powerpc64 target - Could not find symbol ".TOC."
Date: Sat, 10 Jul 2021 10:31:40 +0930 [thread overview]
Message-ID: <YOjxdOaP6uy4i8tU@squeak.grove.modra.org> (raw)
In-Reply-To: <7a410f448ecddd3e5c4175344be639f68ab3be47.camel@vnet.ibm.com>
On Fri, Jul 09, 2021 at 11:51:35AM -0500, will schmidt wrote:
> I've made some local changes so I'm now calling bfd_set_gp_value when
> the ".TOC." symbol is handled in compile_object_load.
> i.e.
> if (strcmp (sym->name, ".TOC.") == 0)
> bfd_set_gp_value(abfd.get(), sym->value);
>
> This is either wrong, or insufficient. :-)
Symbol value here is section relative. You need to add the symbol
section vma, which is set by setup_sections_data::setup_one_section.
If that doesn't help, I would run gdb under gdb with a breakpoint on
ppc64_elf_toc_reloc looking to see whether that function is using the
value you expect given your bfd_set_gp_value call.
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2021-07-10 1:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 18:54 will schmidt
2021-06-23 15:36 ` Ulrich Weigand
2021-06-23 17:37 ` will schmidt
2021-06-24 3:11 ` Alan Modra
2021-06-24 4:39 ` Alan Modra
2021-06-24 15:32 ` Ulrich Weigand
2021-06-24 23:05 ` Alan Modra
2021-06-25 14:49 ` will schmidt
2021-07-09 16:51 ` will schmidt
2021-07-10 1:01 ` Alan Modra [this message]
2021-07-13 4:33 ` will schmidt
2021-07-13 11:11 ` Alan Modra
2021-07-13 22:59 ` will schmidt
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