[U-Boot-Users] [PATCH] PPC: Use r2 instead of r29 as global data pointer
Wolfgang Denk
wd at denx.de
Sun Feb 17 23:05:06 CET 2008
Dear Rafal,
in message <47B85ECF.5080207 at semihalf.com> you wrote:
>
> How about switching r14 (GOT ptr) to r13 in a similar way? Quite like the r2,
> r13 is a dedicated register (small data area purposes) and it would let us
> avoid using the -ffixed completely.
I have to admit that I don;t understand enough of these things to
judge if R13 (listed as "small data area pointer") is really free for
use for our purposes.
> I can provide patches, but let me know your thoughts first.
I guess you already ran some tests? If you are sure about this, and if
it really works, then please submit your patches!
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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