1	.arch armv7-m
2	.text
3	.thumb
4
5	mrs r4, apsr
6	mrs r5, eapsr
7	mrs r6, primask
8	msr xpsr_nzcvq, r3
9	msr apsr_nzcvq, r4
10	msr iapsr_nzcvq, r5
11	msr primask, r6
12