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Sebastian Huber
32f0f11a68
The previous SMP multitasking start assumed that the initial heir thread of a processor starts execution in _Thread_Handler(). The _Thread_Handler() sets the interrupt state explicitly by _ISR_Set_level() before it calls the thread entry. Under certain timing conditions, processors may perform an initial context switch to a thread which already executes its thread body (see smptests/smpstart01). In this case, interrupts are disabled after the context switch on targets which do not save/restore the interrupt state during a context switch (aarch64, arm, and riscv). Close #4627.