stand-alone

This service signals a semaphore N times. Up to N threads waiting on the semaphore are made ready to execute.

Do not confuse the low-level function k_sema_signal_n with the high-level function i_sema_signal_n.

The following registers are used:

For example:

     ; this assumes that a2 contains the address of the semaphore.

     ldw  *+a11[-2], b3 ; address of k_sema_signal_n

     mv    a2,       a3 ; address of semaphore

     nop   3

     b     b3           ; call k_sema_signal_n

     ldw  *a3, a2       ; load first word of semaphore

     mvkl  Next, a0     ; return address

     mvkh  Next, a0

     mvk   1,    b1     ; N = 1

     nop

Next:

The loading of a2, a3, and b1 must have completed by the time control passes to k_sema_signal_n

stand-alone

This service sets an event. Any threads waiting on the event are made ready to execute.

Do not confuse the low-level function k_event_set with the high-level function i_event_set.

The following registers are used:

For example:

     ;this assumes that a2 contains the address of the event to set.

     ldw  *+a11[-1], b3 ; address of k_event set

     nop   4

     b     b3           ; call k_event set

     ldw  *a2,       b0 ; load event word

     mv    a2,       a4 ; set address of event word

     mvkl  Next,     b3 ; return address

     mvkh  Next,     b3

     nop

Next:

The loading of b0 and a4 must have completed by the time control reaches k_event_set.