syscall.sh / csky / semtimedop_time64

semtimedop_time64

System V semaphore operations

sys_semtimedop(int semid, struct sembuf *sops, unsigned nsops, const struct __kernel_timespec *timeout)

register	value
`r7`	420, the syscall number
`a0`	int semid
`a1`	struct sembuf *sops
`a2`	unsigned nsops
`a3`	const struct __kernel_timespec *timeout
`a0`	the return value

Then run trap 0 to enter the kernel.

Same syscall on other architectures