Re: [patches] powerpc 8xx dcbz problem

[Mark Mitchell <mark@xxxxxxxxxxxxxxxx>]

Steven Munroe wrote:

> So any fix/work-around should go in ports and should use --with-cpu. You
> can override libc-start.c from ports/sysdeps/powerpc/powerpc32/8xx with
> a version that zeros __cache_line_size for 8xx and sets its from
> AT_DCACHEBSIZE otherwise.
> .

I don't understand what argument you would give to --with-cpu in this
case?  I'm not an expert on Power, so forgive me if the particular CPUs
I pick below doesn't make sense.

Suppose that we want a GLIBC that runs on 603 or later processors,
including 8xx.  So, we configure with --with-cpu=603.  Are you
suggesting that we change the 603 libc-start.c do the check for 8xx?
And, presumably, all other CPUs X such that code for X should run on an
8xx?  Won't that result in duplication along another dimension?

-- 
Mark Mitchell
CodeSourcery
mark@xxxxxxxxxxxxxxxx
(650) 331-3385 x713