On Fri, Jul 31, 2009 at 5:13 PM, Carlos O'Donell<carlos@xxxxxxxxxxxxxxxx> wrote: > On Fri, Jul 31, 2009 at 5:09 PM, Helge Deller<deller@xxxxxx> wrote: >> On 07/31/2009 09:03 PM, John David Anglin wrote: >>>> >>>> Only 32-bit targets have the 14-bit signed immediate offset (0x3fff), >>>> which becomes a 13-bit limit when loading positive offsets e.g. >>>> +0x1fff or 1023 GOT slots. >>> >>> Can't we offset the table and double the number of entries? >> >> Dave, >> Can you explain this idea a little more? > > I would also like a little more details. > > However, this is similar to the DT_PLTGOT issue in dynamic libraries. > The value chosen for %dp is arbitrary, and if we made it point into > the middle of the GOT table, then you would reference the GOT using > both positive and negative offsets. > > For example, this code: > fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset; > > Arbitrary chooses the module %dp to point at the start of got_offset, > why not make that got_offset + <half way>. Let me be clearer, the value of "(Elf_Addr)me->module_core + me->arch.got_offset" is the start of the GOT table for the module. Cheers, Carlos. -- 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
