kexec_load

load a new kernel for later execution

sys_kexec_load(unsigned long entry, unsigned long nr_segments, struct kexec_segment *segments, unsigned long flags)

register	value
`d0`	313, the syscall number
`d1`	unsigned long entry
`d2`	unsigned long nr_segments
`d3`	struct kexec_segment *segments
`d4`	unsigned long flags
`d0`	the return value

Then run trap #0 to enter the kernel.

Same syscall on other architectures