1        .syntax unified
2        .cpu cortex-m4
3        .fpu softvfp
4        .thumb
5        .file   "m.c"
6        .text
7        .align  2
8        .global main
9        .thumb
10        .thumb_func
11        .type   main, %function
12main:
13        push    {r7, lr}
14        add     r7, sp, #0
15        bl      foo
16        mov     r3, r0
17        mov     r0, r3
18        pop     {r7, pc}
19