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donnaken15/prime_ARM.asm

Last active March 17, 2024 09:18
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Prime number counter in ARM assembly, based on 2018-2020 code
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prime_ARM.asm
; wesley's prime number check in ARM
mov r0, #5 ; i
loop mov r1, #3 ; j
check mov r2, r0 ; modulo (cheap)
modl sub r2, r2, r1
cmp r2, r1
bhs modl ; r2 > r1
cmp r2, #0 ; == 0
beq fail ; then not prime
; continue
add r1, r1, #2 ; j += 2
cmp r1, r0 ; j < i
blo check
; got prime number if landing here
mov r3, r0 ; log number
fail add r0, r0, #2 ; next odd number
cmp r0, #0xFFFFFFFF
blo loop
end
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