timer_settime

arm/disarm and fetch state of POSIX per-process timer

sys_timer_settime(timer_t timer_id, int flags, const struct __kernel_itimerspec *new_setting, struct __kernel_itimerspec *old_setting)

register	value
`g1`	262, the syscall number
`o0`	timer_t timer_id
`o1`	int flags
`o2`	const struct __kernel_itimerspec *new_setting
`o3`	struct __kernel_itimerspec *old_setting
`o0`	the return value

Then run t 0x6d to enter the kernel.

Same syscall on other architectures