On Sunday 25 March 2012 17:52:51 Khem Raj wrote: > On Sun, Mar 25, 2012 at 12:42 PM, Joakim Tjernlund wrote: > > Khem Raj <raj.k...@gmail.com> wrote on 2012/03/25 20:23:04: > >> On Sun, Mar 25, 2012 at 10:30 AM, Joakim Tjernlund wrote: > >> >> On Sun, Mar 25, 2012 at 12:58 AM, Mike Frysinger wrote: > >> >> > On Sunday 25 March 2012 03:23:38 Khem Raj wrote: > >> >> >> On Sat, Mar 24, 2012 at 11:58 PM, Mike Frysinger 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 ? > > > > It is in ldso/ldso/ldso.c last I checked. > > right thats the consumer of the definition so I think adding alias for > __start in the definition will fix this problem.
it should be easy to add aliases via .set for both mips and blackfin (and prob h8300, although that doesn't have a ldso port) so _start == __start. i don't think there would be runtime penalties for this as long as the symbol has hidden visibility. -mike
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