global ft_strdup

extern malloc
extern ft_strcpy
extern ft_strlen
extern __errno_location
section .text

ft_strdup:
	test rdi, rdi ; test if arg is NULL
	jz .err

	push rdi ;push to use it for the strcpy
	call ft_strlen
	inc rax
	mov rdi, rax

	call malloc wrt ..plt
	test rax, rax
	jz .malloc_failed
	mov rdi, rax
	pop rsi
	sub rsp, 8
	call ft_strcpy
	add rsp, 8
	ret

.malloc_failed:
	sub rsp, 8
	call __errno_location wrt ..plt
	add rsp, 8
	mov dword [rax], 12
	pop rax

.err:
	xor rax, rax
	ret