countingnumbers, Assembly

countingnumbers

;nasm 2.11.08

%macro cmn 4
 mov rax,%1
 mov rdi,%2
 mov rsi,%3
 mov rdx,%4
 syscall
%endmacro

section .data
    msg1 db 10, "the count of 0"
    msg1len equ $-msg1
    msg2 db 10, "the count of positive"
    msg2len equ $-msg2
    msg3 db 10, "the count of negative"
    msg3len equ $-msg3
    array db -04h, 00h, 50h, -21h, 00h
    countz db 00
    countp db 00
    countn db 00
    
section .bss
    dispnum resb 02h

section .text
	global _start

_start:
	mov cl,05h
    mov rsi,array
cont: mov al,[rsi]
      cmp al,00h
      je labelz
      rol al,01h
      jc labeln
      inc byte[countp]
      jmp final
      
labelz: inc byte[countz]
        jmp final
labeln: inc byte[countn]
        jmp final
final: inc rsi
        dec cl
        jnz cont
        
        mov al,[countz]
        push rax
        cmn 1,1,msg1,msg1len
        pop rax
        call displayno
        mov al,[countp]
        push rax
        cmn 1,1,msg2,msg2len
        pop rax
        call displayno
        mov al,[countn]
        push rax
        cmn 1,1,msg3,msg3len
        pop rax
        call displayno
        call exit
        
displayno: mov rsi,dispnum+1
           xor rcx,rcx
           mov cl,02h
label1: xor rdx,rdx
         xor rbx,rbx
         xor rbx,10h
         div rbx
         cmp dl,09h
         jbe less09
         add dl,07h
less09: add dl,30h
        mov [rsi],dl
        dec rsi
        dec cl
        jnz label1
        
        mov rax,1
        mov rdi,1
        mov rsi,dispnum
        mov rdx,02h
        syscall
        ret
exit: mov rax,60
      mov rdi,0
      syscall
ret


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