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@lucasgolino
Created September 11, 2021 02:37
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Leetcode find-the-difference
section .text
global _start
_start:
mov esi, 0 ; initializer counter
jmp _loop
_loop:
cmp esi, s_len
je _print_diff ; prevent overflow s string size
mov al, [s + esi] ; get s[esi]
mov bl, [t + esi] ; get t[esi]
cmp al, bl ; compare eax == ebx
je _increment_to_loop ; jump equal to _increment_to_loop
; else
jmp _print_diff ; jump to _print_diff
_increment_to_loop:
inc esi
jmp _loop
_print_diff:
lea ecx, [t + esi] ; get t[esi]
mov eax, 4 ; sys_call write
mov ebx, 1 ; sys_call file stdout
mov ecx, ecx ; get char at esi index
mov edx, 0x1 ; set length
int 0x80 ; call kernel
jmp _exit
_exit:
mov eax, 1 ; sys_call exit
int 0x80 ; call kernel
section .data
s: db "abcde", 0
s_len equ $-s
t: db "abcdef", 0
t_len equ $-t
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