1.global call_trusted
2.arch_extension sec
3
4call_trusted:
5	stmfd sp!, {r4-r12,lr}
6	mov r6, #0xff
7	mov r12, #0
8	dsb
9	isb
10	dmb
11	smc 1
12	ldmfd sp!, {r4-r12,lr}
13	bx lr
14
15