RE: [avr-gcc-list] ATmega2560 and gcc __prologue_saves__

[Weddington, Eric]

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> org] On Behalf Of Anatoly Sokolov
> Sent: Monday, July 14, 2008 1:36 PM
> To: Stu Bell; address@hidden
> Subject: Re: [avr-gcc-list] ATmega2560 and gcc __prologue_saves__
> 
> Hello.
> 
> > I've stumbled across another problem with ATmega2560 
> support.  Although
> > the problem is triggered from avr-libc, I believe this to be a gcc
> > problem.
> > 
> > Then the do_rand() calls __prologue_saves__.  That function 
> saves the
> > appropriate registers, but then assembles an EIJUMP without 
> setting the
> > proper value in EIND.  This wouldn't matter on anything *but* an
> > ATmega2560.  On my code, EIND = 0 (because I've never made 
> an EICALL to
> > set EIND = 1) so the code jumps into lower flash and I'm dead.
> 
> This bug fixed in GCC mainline:
> 
> Patch AVR: fix call prologue saves for avr6 - commited.
> http://gcc.gnu.org/ml/gcc-patches/2008-05/msg01611.html
> 
> Anatoly.
>

Ok, so never mind with the bug report, Stu.