33 lines
445 B
ArmAsm
33 lines
445 B
ArmAsm
@ <intstruction> <destination> , <operand>, <operand>
|
|
|
|
.global _start
|
|
|
|
/*
|
|
CMP R1. R2
|
|
if R1 < R2 then N is enabled
|
|
if R1 > R2 then N is disabled
|
|
if R1 == R2 then Z is enabled
|
|
*/
|
|
|
|
_start:
|
|
MOV R1, #20
|
|
MOV R2, #10
|
|
CMP R1, R2
|
|
BEQ values_equal
|
|
BGT values_greater
|
|
|
|
values_less:
|
|
MOV R0, #2
|
|
B end
|
|
|
|
values_equal:
|
|
MOV R0, #1
|
|
B end
|
|
|
|
values_greater:
|
|
MOV R0, #3
|
|
|
|
end:
|
|
MOV R7, #1 @ exit to terminal
|
|
SWI 0 @ system reads R7 after interrupt
|