[NASM] My first Assembly program! (x86 32-bit Linux)

[nvteighen]

Here's my first Assembly program. A very stupid one but a bit more complex that "Hello world"... I actually don't like Assembly very much, the only reason I went for it was because of curiosity. Also, I wanted to experiment using sys_calls instead of calling libc, so that's why this is using int 80h to call the kernel :)

I'm sure this can be corrected and prettified. For example, it'd be great to get rid of the name global... So, I'm open to suggestions!



;; NASM x86 32-bit Linux Assembly

section .data
prompt db "Tell me your name!", 10
promptLength equ $-prompt
bufStdSize equ 256
nameReply db "Ah! Your name is:", 10
nameReplyLength equ $-nameReply

section .bss
name resb bufStdSize

section .text
global _start

_start:
call promptForName
call printName

jmp exit

printWhatever:
push ebp
mov ebp, esp

mov eax, 4
mov ebx, 1
mov ecx, [ebp+8]
mov edx, [ebp+12]
int 80h

pop ebp
ret

promptForName:
push ebp
mov ebp, esp

push dword promptLength
push dword prompt
call printWhatever
add esp, 8

push dword name
call getName
add esp, 4

pop ebp
ret

getName:
push ebp
mov ebp, esp

mov eax, 3
mov ebx, 0
mov ecx, [ebp+8]
mov edx, bufStdSize
int 80h

pop ebp
ret

printName:
push ebp
mov ebp, esp

push dword nameReplyLength
push dword nameReply
call printWhatever
add esp, 8

push dword bufStdSize
push dword name
call printWhatever
add esp, 8

pop ebp
ret

exit:
mov eax, 1
mov ebx, 0
int 80h