count of +ve and -ve nos., Assembly

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section .data
	welmsg db 10,'Welcome to count +ve and -ve numbers in an array',10
	welmsg_len equ $-welmsg

pmsg db 10,'Count of +ve numbers::'
	pmsg_len equ $-pmsg

nmsg db 10,'Count of -ve numbers::'
	nmsg_len equ $-nmsg

nwline db 10

array dw 8505h,90ffh,0087h,0088h,8a9fh,00adh,0002h
	arrcnt equ 7

pcnt db 0
	ncnt db 0

section .bss
	dispbuff resb 2

%macro  write   2
	mov   rax, 1
	mov   rdi, 1
	mov   rsi, %1
	mov   rdx, %2
	syscall
%endmacro

section .text
	global _start
_start:
	write welmsg,welmsg_len

mov rsi,0
	mov rcx,arrcnt
up1:
	bt word[array+rsi*2],15
	jnc pnxt
	inc byte[ncnt]
	jmp pskip

pnxt:	inc byte[pcnt]

pskip:	inc rsi
	
	loop up1

write pmsg,pmsg_len
	mov bl,[pcnt]
	call disp8num

write nmsg,nmsg_len
	mov bl,[ncnt]
	call disp8num

write nwline,1		;New line char
exit:
	mov rax,60
	mov rdi,0
	syscall

disp8num:
	mov rcx,2		;Number digits to display
	mov rdi,dispbuff	;Temp buffer
dup1:
	rol bl,4		;Rotate number from bl to get MS digit to LS digit
	mov al,bl		;Move rotated number to AL
	and al,0fh		;Mask upper digit
	cmp al,09		;Compare with 9
	jbe dskip		;If number below or equal to 9 go to add only 30h
	add al,07h		;Else first add 07h
dskip:	add al,30h		;Add 30h
	mov [rdi],al		;Store ASCII code in temp buff
	inc rdi			;Increment pointer to next location in temp buff
	loop dup1		;repeat till ecx becomes zero

write dispbuff,2	;display the value from temp buff
	ret			;return to calling program

Show compiler warnings [ + ] Show input
Compilation time: 0.28 sec, absolute running time: 0.17 sec, cpu time: 0.04 sec, memory peak: 3 Mb, absolute service time: 0,46 sec