[RFC/PATCH] ldso: drop -Wl,-e,_start linking option

Khem Raj raj.khem at gmail.com
Sun Mar 25 18:23:04 UTC 2012


On Sun, Mar 25, 2012 at 10:30 AM, Joakim Tjernlund
<joakim.tjernlund at transmode.se> wrote:
>>
>> On Sun, Mar 25, 2012 at 12:58 AM, Mike Frysinger <vapier at gentoo.org> wrote:
>> > On Sunday 25 March 2012 03:23:38 Khem Raj wrote:
>> >> On Sat, Mar 24, 2012 at 11:58 PM, Mike Frysinger <vapier at gentoo.org> wrote:
>> >> > The _start symbol is the default entry point for ELFs, so there should be
>> >> > no need to manually specify this.  The background motivation is that this
>> >> > causes issues for ports that have a symbol prefix (like Blackfin) and so
>> >> > they don't have a "_start" symbol -- it's named "__start".
>> >>
>> >> on MIPS its also __start unlike others where it is _start
>> >
>> > ok, i'll ponder exposing __USER_LABEL_PREFIX__ to the build system somehow
>> > then so it automatically selects the right "_start"
>>
>> if binutils/ld is configured for right emulation (which it should be)
>> that should take care of it automatically
>> though so your patch is ok.
>
> I think the problem is that ldso.c expects start to be named _start so
> you can't just rename it __start.
> You could define _start = __start in arch code that need it though.
>

isnt it arch specific function in ldso/<arch>/dl-startup.h ?
in that case just change the ldso/mips/dl-startup.h to define __start
and not _start
and same for bfin
>  Jocke
>


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