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Re: [microblaze-uclinux] bootstrap code
Greg Ungerer wrote:
> jozsef imrek wrote:
>> On Wed, 12 May 2004, Greg Ungerer wrote:
>>> Ok, interresting. Can objcopy also create/set values in the program
>> i just did not have too much time to spend on this, and found no positive
>> answer up to now. anyone else with more expereince?
>> i think some post linking solution would be prefered, so that the kernel
>> would not depend on an already built filesystem (and thus compiled
>> applications, which themselves depend on kernel headers...).
> I really don't like link methods that rely on building applications
> first. They should be avoided at all costs.
Seems to me the real deficiency here is in objcopy - its apparent
inability to place post-link sections into segments requires either
double-link tricks or non-compliant elf loaders.
We just need something like
# create new segment
# add section into segment
objcopy --add-section=.romfs=$(ROMFSIMG) --segment=.romfs ...
Or maybe we could even write little hack tool that post processes an elf
image and links the .romfs section into one of the existing segments?
The little I have seen of the BFD API in elf2flt suggests this shouldn't
be too hard... maybe :)
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