[RFC PATCH 01/10] arch: introduce symbol HAVE_INITJMP

[Heinrich Schuchardt]

On 14.02.25 15:00, Jerome Forissier wrote:
> HAVE_INIJMP will be set by architectures that support initjmp(), a
> non-standard extension to setjmp()/longjmp() allowing to initialize a
> jump buffer with a function pointer and a stack pointer. This will be
> useful to later introduce threads.

How is initjmp() used in threading?

A cover-letter for the series would have been helpful.

>
> Signed-off-by: Jerome Forissier <jerome.forissier at linaro.org>
> ---
>   arch/Kconfig | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/arch/Kconfig b/arch/Kconfig
> index 35b19f9bfdc..8d5b54031b3 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -13,6 +13,12 @@ config HAVE_SETJMP
>   	help
>   	 The architecture supports setjmp() and longjmp().
>
> +config HAVE_INITJMP
> +	bool
> +	help
> +	 The architecture supports initjmp(), a non-standard companion to
> +	 setjmp() and longjmp().

If this required for thread support, I would have expected this to be in
the help text.

Best regards

Heinrich

> +
>   config SUPPORT_BIG_ENDIAN
>   	bool
>