[PATCH] score: Add _CPU_Use_thread_local_storage()

Chris Johns chrisj at rtems.org
Tue Jul 5 05:06:13 UTC 2022

On 5/7/2022 2:56 pm, Sebastian Huber wrote:
> On 05/07/2022 00:33, Chris Johns wrote:
>> On 4/7/2022 4:08 pm, Sebastian Huber wrote:
>>> On 29/06/2022 15:07, Sebastian Huber wrote:
>>>> At some point during system initialization, the idle threads are created.
>>>> Afterwards, the boot processor basically executes within the context of an idle
>>>> thread with thread dispatching disabled.  On some architectures, the
>>>> thread-local storage area of the associated thread must be set in dedicated
>>>> processor registers.  Add the new CPU port function to do this:
>>>> void _CPU_Use_thread_local_storage( const Context_Control *context )
>>>> Close #4672.
>>> Any comments to this patch?
>> I did wonder about the boot processor executing within the idle thread's context
>> comment.
>> What code is the boot processor executing in the context of the idle thread?
> The device driver initialization and creation of "/dev/console" is done in this
> context for example.
>> How does that execution effect the stack allocated to the idle thread?
> The idle stack is not used. The system initialization uses the interrupt stacks.

Thanks. I am fine with this.


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