[PATCH 1/3] Support BE8 mode kernel modules relocation

[stanley.miao@windriver.com (stanley.miao)]

Catalin Marinas wrote:
> On Wed, 2011-01-19 at 06:21 +0000, Stanley.Miao wrote:
>   
>> 2011/1/18 Catalin Marinas <catalin.marinas@arm.com>:
>>     
>>> BTW (not related to modules, but since you are looking at this), when
>>> we copy the sigreturn_codes to the vectors page in early_trap_init(),
>>> do they get there in little endian form (as required by BE8)?
>>>       
>> No, they get there in big endian.They are read as data in the function
>> setup_return().
>>
>> retcode = KERN_SIGRETURN_CODE + (idx << 2) + thumb;
>>     
>
> This retcode here is an address in the vectors page which is set to LR
> when invoking the signal handler. All fine here.
>
> But the sigreturn_codes array contains instructions which get copied to
> the vectors page in the early_trap_init() function. This array has this
> instructions in big endian format but they should be converted to little
> endian when copied to the vectors page.
>
>   
I don't have a board in hand for now. When I get a board, I will test it.

Stanley.

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