.global context_switch
context_switch:
	stp x19, x20, [x0, 16 * 0]
	stp x21, x22, [x0, 16 * 1]
	stp x23, x24, [x0, 16 * 2]
	stp x25, x26, [x0, 16 * 3]
	stp x27, x28, [x0, 16 * 4]
	stp fp, lr, [x0, 16 * 5]
	mov x9, sp
	str x9, [x0, 16 * 6]

	ldp x19, x20, [x1, 16 * 0]
	ldp x21, x22, [x1, 16 * 1]
	ldp x23, x24, [x1, 16 * 2]
	ldp x25, x26, [x1, 16 * 3]
	ldp x27, x28, [x1, 16 * 4]
	ldp fp, lr, [x1, 16 * 5]
	ldr x9, [x1, 16 * 6]
	mov sp,  x9
	msr tpidr_el1, x2
	ret