Le 24/02/2011 10:39, Wolfgang Denk a écrit :
Dear Albert ARIBAUD,
In message4D6611A7.5050802@free.fr you wrote:
In the U-Boot image itself, knowing the image size could be achieved in ARM by using a general _end symbol that would be set after the last image output section, so _end-_start would equal the image size.
we have such a "_end" in u-boot.lds files.
I *knew* this name did not pop up in my mind without a reason. :)
Apologies for not having checked.
I guess we need a __dynsym_end in all u-boot.lds files.
I'd rather go for "_end", which does not tie the solution to dynsym being the last section in the image -- imagine for some reason we move dynsym inside the image rather than at the end, end the image size will be wrong again. With _end, and a suitable comment in the LD file... this will be averted where-ever dynsym ends up.
After all, the bug you uncovered was due to using the wrong symbol, a BSS related one rather than an image-related one, in the first place; so let's try and learn from past mistakes.
I think the location of _end in the linker scripts needs to be changed
- so far it covers the maximum of dynsym and bss, but it should refer
to the end of dynsym only.
Po-Yu Chuang, can you verify Wolfgang's suggestion (and make sure no other place depends on _end) and submit a patch? As this is a fix, a quick patch could still be pulled in for the upcoming release.
Best regards,
Wolfgang Denk
Amicalement,