On 25.02.25 17:34, 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. 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
HAVE_SETJMP controls if /arch/<arch>/lib/setjmp.S is compiled.
Please, add the missing dependency.
depends HAVE_SETJMP
Best regards
Heinrich
+ help
+ The architecture supports initjmp(), a non-standard companion to
+ setjmp() and longjmp().
+
config SUPPORT_BIG_ENDIAN
bool
