Hi Jerome,
On Tue, 25 Feb 2025 at 18:35, Jerome Forissier <jerome.foriss...@linaro.org> 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. With this new function it becomes > possible to longjmp() to a particular function pointer (rather than > to a point previously reached during program execution as is the case > with setjmp()), and with a custom stack. Both things are needed to > spin off a new thread. Then the usual setjmp()/ longjmp() pair is > enough to save and restore a context, i.e., switch thread. > > Signed-off-by: Jerome Forissier <jerome.foriss...@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(). > + > config SUPPORT_BIG_ENDIAN > bool > > -- > 2.43.0 >\ Reviewed-by: Ilias Apalodimas <ilias.apalodi...@linaro.org>
