[PATCH 02/11] nds32: ABI Implementation

[Florian Weimer]

On 05/14/2018 07:14 AM, Vincent Chen wrote:
> On Sat, May 12, 2018 at 03:15:39PM +0800, Florian Weimer wrote:
>> On 05/06/2018 04:41 PM, vincentc wrote:
>>> +  $r26 - $r27 are temp registers for OS - no need to save.
>>
>> Shouldn't you save them in case you decide to use them for a thread
>> pointer eventually or something like that?
>>
>> Thanks,
>> Florian
> 
> 
> We do not save $r26, $r27 these two registers because these two register are
> reserved for kernel space. In other words, these two registers shall not be used
> in user space. Therefore, we needn't save these two registers to jmp_buf.

Okay, in this case, you could update the register list at the top of the 
file.  Perhaps also mention the register used for the thread pointer?

Thanks,
Florian