Dear Albert ARIBAUD, Am 08.01.2011 um 13:18 schrieb Albert ARIBAUD:
> Le 08/01/2011 11:49, Albert ARIBAUD a écrit : > >>> In my investigations for 'NULL fixup' (-> see >>> http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/89864/focus=89906) >>> pointed out that only symbols in 'absolute fixup' loop could be 'NULL' >>> if there is a not aliased/empty weakly linked symbol. > > BTW: is such a situation normal? IIUC, it means there is a weakly linked > symbol without *any* defintion, *and* it is referenced in the code. Yes you may have a weakly linked symbol which was declared but nowhere implemented. See http://patchwork.ozlabs.org/patch/73647, this fixed such a situation for arm920t/at91 style SoC. BTW: Without the mentioned patch there was another issue with linking (-> see http://patchwork.ozlabs.org/patch/73563). The linker introduced a .plt section which could not be placed and lead to a segfault of linker. > Granted, maybe it is checked before it is referenced, but we may want to > check for and report at build time if possible. Would that be useful? AFAIR there was a statement to remove those 'undefined weakly linked symbols' from code. So it would be useful to have a tool to detect those symbols at build time. regards Andreas Bießmann _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
