问x86_64英特尔putnbr仅正确打印第一个数字

EN

BITS    64

extern  ___error
default rel

    section .bss
    buffer  resb 1       ; buffer used for character to syscall write

    section .text
    global  _ft_putchar

_ft_putchar:
    mov     [buffer], rdi    ; input char written to addres
    mov     rsi, buffer      ; address of char passed to write
    mov     rdi, 1           ; set fd
    mov     rdx, 1           ; set amount of char
    mov     rax, 0x2000004   ; set syscall
    syscall
    jc      _error
    jmp     _ret

_error:                      ; function to set errno
    push    rax
    call    ___error
    pop     qword [rax]
    mov     rax, -1

_ret:
    ret

BITS 64

extern  _ft_putchar

    section .text
    global  _ft_putnbr

_ft_putnbr:              ; function to print nbr given to it in rdi

_loop:
    xor     rax, rax     ; set rax to 0 
    cmp     rdi, 0
    jnge    _put_dash    ; if nbr < 0, write a '-' and do nbr * -1
    cmp     rdi, 10
    jnae    _put_dig     ; if nbr < 10, write the nbr
    mov     rax, 0
    mov     rax, rdi     ; put nbr in rax
    mov     rbx, 10
    mov     rdx, 0       ; set rdx to 0 (prepare for remainder div)
    div     rbx          ; devide rax by 10 put remainder in rdx
    mov     rdi, 0       ; set rdi to 0 (prepare for function call)
    push    rdi
    mov     rdi, rax     ; mov rax to rdi to do next iteration putnbr with
    call    _ft_putnbr
    pop     rdi
    mov     rdi, rdx     ; remainder div stored in rdx to rdi
    jmp     _put_dig

_put_dash:               ; subroutine for writing dash and inversing nbr
    push    rdi          ; save rdi on stack
    mov     rdi, 0
    mov     rdi, '-'     ; mov the printable char to rdi
    call    _ft_putchar
    pop     rdi          ; get rdi back from stack
    neg     rdi          ; invers nbr to positive
    jmp     _loop        ; go back to loop

_put_dig:
    add     rdi, 48      ; add 48 so nbr is ascii
    call    _ft_putchar  ; write nbr
    ret