Date: Mon, 21 Jun 2010 16:10:45 -0400 From: John Baldwin <jhb@freebsd.org> To: Andriy Gapon <avg@freebsd.org> Cc: freebsd-hackers@freebsd.org, Navdeep Parhar <np@freebsd.org>, freebsd-amd64@freebsd.org Subject: Re: amd64 kernel modules: mapping sections to addresses Message-ID: <201006211610.45811.jhb@freebsd.org> In-Reply-To: <4C1F8BDD.9010408@freebsd.org> References: <4C1F798C.7010204@freebsd.org> <201006211143.26459.jhb@freebsd.org> <4C1F8BDD.9010408@freebsd.org>
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On Monday 21 June 2010 11:57:17 am Andriy Gapon wrote: > on 21/06/2010 18:43 John Baldwin said the following: > > np@ has a patch to gdb to fix this for kgdb. I haven't committed it as it > > patched gdb internals and wasn't in a kgdb-specific place, but I'm not sure of > > a better way to fix kgdb. > > Oh, yes, section mapping is done in common gdb code. > Perhaps kld.c shouldn't call build_section_table, but directly call > bfd_map_over_sections with a custom variant of add_to_section_table? > Can you please share the patch? It was deeper level than that, I'd have to dig it up. > Still, what about a small tool, elf(3)-base porgram or objdump+objcopy shell > script, that would set section addresses in amd64 .ko (relocatable object file) > similarly to how they are set in i386 .ko (full-blown DSO)? > Or is this too much useless hassle? No idea. If this worked and just let gdb work automatically that would be a nice fix to just put into the build process. -- John Baldwin
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