This place *needs* examples. Here is one.
; For Windows:
; nasm -f win32 --prefix _ -o prime.obj prime.asm
; gcc -o prime.exe prime.obj
;
; For Linux:
; nasm -f elf32 -o prime.o prime.asm
; gcc -o prime prime.o
section .data
msg: db 'Enter an integer: ', 0
chr: db '%d', 0
ispmsg: db 10, 'The integer %d is prime!', 10, 0
nopmsg: db 10, 'The integer %d is not prime.', 10, 0
section .text
global main
extern printf, scanf
main:
push ebp
mov ebp, esp
sub esp, $0c
mov dword [ebp-8], 1
push msg
call printf
add esp, 4
lea eax, [ebp-4]
push eax
push chr
call scanf
add esp, 8
cmp dword [ebp-4], 2
jge next
mov dword [ebp-8], 0
jmp continue
next:
jne nextt
jmp continue
nextt:
mov eax, [ebp-4]
cdq
mov ebx, 2
idiv ebx
cmp edx, 0
je nexttt
finit
fild dword [ebp-4]
fsqrt
fistp dword [ebp-$0c]
mov ecx, 3
jmp ccheck
floop:
mov eax, [ebp-4]
cdq
idiv ecx
cmp edx, 0
jne check
mov dword [ebp-8], 0
jmp continue
check:
add ecx, 2
ccheck:
cmp ecx, [ebp-$0c]
jle floop
jmp continue
nexttt:
mov dword [ebp-8], 0
continue:
xor eax, eax
cmp eax, [ebp-8]
jne isprime
mov eax, [ebp-4]
push eax
push nopmsg
call printf
add esp, 8
jmp endit
isprime:
mov eax, [ebp-4]
push eax
push ispmsg
call printf
add esp, 8
endit:
add esp, $0c
pop ebp
xor eax, eax
ret
