[U-Boot-Users] [MIPS] Introduce machine_restart

[Joakim Tjernlund <Joakim.Tjernlund@transmode.se>]

> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de]
> Sent: den 18 mars 2008 20:25
> To: Jean-Christophe PLAGNIOL-VILLARD
> Cc: Shinya Kuribayashi; Joakim Tjernlund; u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] [MIPS] Introduce machine_restart
> 
> In message <004701c88928$4f457bb0$edd07310$@Tjernlund@transmode.se>
> Joakim Tjernlund wrote:
> >
> > I don't think it is good to use global fun ptrs. These are not
> > available until
> > relocated to RAM.
> 
> Agreed!
> 
> In message <20080318184338.GA8728@game.jcrosoft.org>
> Jean-Christophe Plagniol-Villar wrote:
> >
> > If possible I will prefer a weak function
> 
> ...which raises the interesting question if, and how, weak function
> pointers work before relocation.
> 
> Has anyone ever tested / analyzed this?

From memory during my work on uClibc ld.so:
It is no difference, the weak function makes it possible to have
several versions and select one at link time.
I THINK the linker will use the first it finds, weak or not. That
implies that the weak functions must be presented last on the
linker cmd line.

 Jocke

> 
> Best regards,
> 
> Wolfgang Denk
>