[U-Boot] [PATCH 3/3] ARM: use r9 for gd

Jeroen Hofstee jeroen at myspectrum.nl
Tue Aug 13 21:41:02 CEST 2013


Hi,

On 08/12/2013 05:23 PM, Wolfgang Denk wrote:
> Dear Albert,
>
> In message <20130812164406.5a6807e7 at lilith> you wrote:
>>> IIRC, r9 is used as GOT pointer ?
>> No, it is not, well, not any more since GOT-based relocation was
>> replaced by ELF relocation, which requires no reserved register.
>>
>>> In any case, please also update the README section of register usage
>>> on ARM.
> I see, thanks for the explanation - so this is one more item thatneeds
> to be fixed in the README.
Damn: "The role of register r9 is platform specific. A virtual platform may
assign any role to this register and _must document_ this usage" ;)

I will update the README for both.

Regards,
Jeroen




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