> >> Relocation section '.rela.PARISC.unwind' at offset 0x9b8 contains 6 entries: > >> Offset Info Type Sym.Value Sym. Name + Addend > >> 00000000 00000231 R_PARISC_SEGREL32 00000000 .exit.text + 0 > >> 00000004 00000231 R_PARISC_SEGREL32 00000000 .exit.text + 2c > >> 00000010 00000331 R_PARISC_SEGREL32 00000000 .init.text + 0 > >> 00000014 00000331 R_PARISC_SEGREL32 00000000 .init.text + 44 > >> 00000020 00000431 R_PARISC_SEGREL32 00000000 .text.crc32c + 0 > >> 00000024 00000431 R_PARISC_SEGREL32 00000000 .text.crc32c + 6c > > > > That's exactly what I expected. There's no overlap. The module > > loader needs to sort the unwind entries after doing the relocations. > > It's already sorting the entries, but creating the relocation is currently a hack. > > See top of arch/parisc/kernel/module.c: > * - SEGREL32 handling > * We are not doing SEGREL32 handling correctly. According to the ABI, we > * should do a value offset, like this: > * if (in_init(me, (void *)val)) > * val -= (uint32_t)me->module_init; > * else > * val -= (uint32_t)me->module_core; > * However, SEGREL32 is used only for PARISC unwind entries, and we want > * those entries to have an absolute address, and not just an offset. > * > * The unwind table mechanism has the ability to specify an offset for > * the unwind table; however, because we split off the init functions into > * a different piece of memory, it is not possible to do this using a > * single offset. Instead, we use the above hack for now. > > If we change this, don't we require a binutils update then at the same time from the users? Where does the .exit.text section fit in this scheme? The loader has to appropriately group the sections and determine the section offsets. It would seem that there is a problem with load offset for at least one of the three sections in this module. Don't think fixing the offsets requires a binutils update. However, the change to using section offsets may have made the problem worse. The binutils update only corrected the issue with overloaded symbols. Dave -- J. David Anglin dave.anglin@xxxxxxxxxxxxxx National Research Council of Canada (613) 990-0752 (FAX: 952-6602) -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
