os_kernel_lab/related_info/lab1/lab1-ex0.md

Try below command

gcc -g  -m32 -o lab1-ex0.exe lab1-ex0.s

Then you will get lab1_ex0.exe

Try to use below some tools to analysis lab1_ex0.exe

objdump -S ...
nm 
file
strace -f ...

Try to understand the contents of this .s file.