How many for loops are possible in nasm ?

[Roddy MacPhee]

I know of at least 40 different variants, but i'm wondering how many are useful (possible).

[debs3759]

I would think that you can use as many loops as you want. It's down to the programmer to write appropriate code and algorithms.

[Roddy MacPhee]

Wish I knew modulo and printing numerical values to screen. Then I could make a prime sieve ... nasm compiler the code editor app uses is 2.14.02 and it has time limits.

Example of my attempt:

Code: [Select]

section .data
hw db "hello world,",0
section .text
global _start
_start:
    mov rdi,1
loop:
    mov eax,4
    mov ebx,1
    lea ecx,[hw]
    lea edx,[rdi]
    int 80H
    inc rdi
    cmp rdi,13
    jne loop
    mov eax,1
    xor ebx,ebx
    int 80H

[debs3759]

If the version of nasm you have is time limited, it's not an official version. nasm is 100% freeware with no restrictions or limitations.

[Roddy MacPhee]

with no restrictions or limitations.

How do I print rdi to screen . I'm on android if that matters.
https://play.google.com/store/apps/details?id=com.rhmsoft.code

Found out how to print ascii characters using alt codes( yes I know I'm stupid). Now to either convert numbers to strings or use extern ...

[Roddy MacPhee]

I would think that you can use as many loops as you want. It's down to the programmer to write appropriate code and algorithms.

Code: [Select]

    mov <register>,1
loop:
    inc <register>
    cmp <register> <limit>
    jne loop


Code: [Select]

    mov <register>,1
loop:
    add <register>,1
    cmp <register> <limit>
    jne loop

With 20+ registers and then some. Unlike what you thought they can't all be used at once( at least without complex additions) . Some have uses doing other things. You can also have a decreasing  version. Another factor is replacing jne with other conditional jumps ...