[U-Boot] ARM: problem with linker option -pie

Albert ARIBAUD
2010-10-31T09:44:15Z

Le 31/10/2010 10:24, Wolfgang Denk a ?crit :

>> I will now analyze the patch code to see if it contains relocations that
>> should have applied but did not, or if it misses relocations altogether.
>> My currently favored bet right now is that BSS may have gotten its own
>> relocation table in later toolchains, but that's only a bet.
>
> Hm.... probably not BSS as such, but eventually the linker treats
> segments without "LOAD" attribute differently?

The first test I did with a sample program which contains the three
types of static scope objects: const, initialized and uninitialized, and
I checked that the inititialized one lands in BSS which has NOBITS while
explicitely initialized objects land in data sections with PROGBITS --
that's akin to the LOAD attribute.

Both the ELDK 4.2 and the CS toolchains' linkers treat all three object
types the same way with respect to relocation, and emit relocations to
the uninitialized object, so not having LOAD attribute is irrelevant --
BTW if it was, BSS relocation would never have worked.

> Best regards,
>
> Wolfgang Denk

Amicalement,
--
Albert.