amd64 kernel modules: mapping sections to addresses

Andriy Gapon avg at
Mon Jun 21 15:57:20 UTC 2010

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?

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?

Andriy Gapon

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