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<h2>Full example</h2>
<pre><code>; Source: https://developer.arm.com/documentation/dui0473/c/writing-arm-assembly-language/subroutines-calls
AREA subrout, CODE, READONLY ; Name this block of code
ENTRY ; Mark first instruction to execute
start MOV r0, #10 ; Set up parameters
MOV r1, #3
BL doadd ; Call subroutine
stop MOV r0, #0x18 ; angel_SWIreason_ReportException
LDR r1, =0x20026 ; ADP_Stopped_ApplicationExit
SVC #0x123456 ; ARM semihosting (formerly SWI)
doadd ADD r0, r0, r1 ; Subroutine code
BX lr ; Return from subroutine
END ; Mark end of file</code></pre>
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