Musl has a generic implementation of the __set_thread_area function in src/thread/__set_thread_area.c. It is not used for ARM though. There is a custom ARM implementation in src/thread/arm/__set_thread_area.s.

Would you be able to clarify the following question please?

Why musl doesn't define SYS_set_thread_area for ARM to utilize the generic function and uses custom __set_thread_area instead?

Thank you in advance for any help.

Oleg