extern ft_strlen
extern malloc
extern ft_strcpy

section .text
        global ft_strdup
        ft_strdup:
                call ft_strlen

                mov rbx, rdi
                mov rdi, rax

                call malloc wrt ..plt
                
                cmp rax, 0
                je error

                mov rdi, rax
                mov rsi, rbx

                call ft_strcpy

                ret

        error:
                xor rax, rax
                ret