.syntax unified
.cpu cortex-m4
.fpu softvfp
.thumb
.file "m.c"
.text
.align 2
.global main
.thumb_func
.type main, %function
main:
push {r7, lr}
add r7, sp, #0
bl foo
mov r3, r0
mov r0, r3
pop {r7, pc}