section .data
    num1    dd -12345
    num2    dd 6789
 
    msg     db "Результат: "
    msg_len equ $ - msg
    newline db 10
    ; Буфер достаточно большой для 64-битного числа со знаком
    buffer  db "00000000000000000000", 0  ; 20 нулей + терминатор
 
section .text
    global _start
 
_start:
    ; Умножение
    mov eax, [num1]
    imul dword [num2]
    mov [num1], eax  ; временно сохраняем
 
    ; Вывод сообщения
    mov rax, 1
    mov rdi, 1
    mov rsi, msg
    mov rdx, msg_len
    syscall
 
    ; Преобразование числа в строку
    mov eax, [num1]  ; результат умножения
    mov rdi, buffer + 19  ; конец буфера
    mov byte [rdi], 0     ; терминатор
    mov ebx, 10           ; делитель
    mov ecx, eax          ; сохраняем для знака
 
    ; Обработка знака
    cmp eax, 0
    jge .positive
    neg eax
 
.positive:
    xor edx, edx
    div ebx
    add dl, '0'
    dec rdi
    mov [rdi], dl
    test eax, eax
    jnz .positive
 
    ; Добавляем минус если нужно
    cmp ecx, 0
    jge .output
    dec rdi
    mov byte [rdi], '-'
 
.output:
    ; Вывод результата
    mov rsi, rdi
    mov rdx, buffer + 20
    sub rdx, rdi
    mov rax, 1
    mov rdi, 1
    syscall
 
    ; Новая строка
    mov rax, 1
    mov rdi, 1
    mov rsi, newline
    mov rdx, 1
    syscall
 
    ; Выход
    mov rax, 60
    xor rdi, rdi
    syscall

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