path: root/ft_strlen.s

.globl	_ft_strlen

 _ft_strlen:
	mov rbx, rdi  # first argument in rbx
	xor rax, rax  # rax = 0
	FT_STRLEN_LOOP:
		cmp byte ptr [rbx + rax], 0  # compare rbx[rax] and '\0'
		je FT_STRLEN_RET
		inc rax
		jmp FT_STRLEN_LOOP
 	FT_STRLEN_RET:
 		ret