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[FILE BEGIN]
1return
2======
3
4Returning 0 from main using basic assembly
5
6Source code structure
7---------------------
8
9In the program we only run three instructions
10
11
12We first move the value 60 to the rax register, this will tell linux that we
13want to exit the program.
14
15	mov rax, 60
16
17We then move the value 0 to the rdi register, this is the argument that we pass
18into the exit syscall. The RDI register stores the code that's being used to exit.
19
20	mov rdi, 0
21
22We then run the syscall instruction to exit the program.
23
24	syscall
25
26The program will return 0 to the shell. We can confirm this by running the
27program and then using echo $? to see the return value.
28
29
30	./return
31	echo $?
[FILE END]
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