Hello Albert, Albert ARIBAUD wrote: > Le 29/11/2010 16:04, Heiko Schocher a écrit : >> Hello Albert, >> >> Albert ARIBAUD wrote: >>> I'll take a look this evening at builds with and without the SORT() from >>> an ELF relocation tables perspective. >> >> I debugged on the beagle board a little bit in this problem, and here >> what I found: [...] >> Why is the rel.dyn Section in the bss section? >> > The .rel.dyn section is not "in" or "out" of the BSS: they are > overlapped, i.e. they should start at the same address. > > As indicated in the documentation, BSS should never be used before > relocation; it actually *cannot* be written into by boards which start > from NOR, and is set to zero for all boards right after relocation.
Yep. > Since BSS does not exist before relocation, and .rel.dyn does not exist > after relocation, they can use the same location: overlaying them is the > best approach in order to get the smallest binary in Flash *and* the > smallest image in RAM. Ah, thats what I missed, thanks! > We can add code to try and catch the most obvious corruption of the > relocation tables due to BSS being accessed before relocation, but we > can't be sure to catch them all. The real solution is to fix the BSS usage. Yep. bye, Heiko -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
