Hi Alexey,
On Thu, 16 Jan 2014 17:48:45 +0000, Alexey Brodkin Alexey.Brodkin@synopsys.com wrote:
On Wed, 2014-01-15 at 22:43 +0100, Albert ARIBAUD wrote:
Hi Alexey,
On Wed, 15 Jan 2014 15:19:56 +0400, Alexey Brodkin Alexey.Brodkin@synopsys.com wrote:
"init_sequence_r" is just an array that consists of compile-time adresses of init functions. Since this is basically an array of integers (pointers to "void" to be more precise) it won't be modified during relocation - it will be just copied to new location as it is.
IIRC, in ARM we switched from GOT to ELF relocation precisely so that data would be relocated as well as code, and I think it actually is, otherwise we'd have a lot of complains. Therefore I fail to understand the statements above. Can someone tell me what I'm getting wrong?
Unfortunately I don't have any supported in U-Boot ARM board handy and run U-boot on another architecture at all (Synopsys DesignWare ARC) so I'm not sure if on ARM functions from "init_sequence_r" list are executed from "RAM" (i.e. from location where they were relocated).
Yes, they are.
I use GOT relocation and see following outputs.
GOT relocation does not relocate references within data, contrary to ELF.
Maybe it's just my faulty implementation of relocation but it might be that nobody ever noticed this because I think only initcalls are affected.
Well, initcalls are quite essential, I guess.
When you say "my faulty implementation of relocation"... do you mean some implementation different from what is currently in mainline?
-Alexey
Amicalement,