From the last two days I have been learning arm assembly, when I came across this website asmbits. You can answer the questions and run them on the website without the hassle of installing an arm emulator on your x86 machine.
Here are the first two questions.
- Write the assembly to return from a function
.global _start _start: bl func 1: b 1b func: cmp r0, #0 neglt r0, r0 bx lr
- Return the value 123 from the function
.global _start _start: b1 func 1: b 1b func: mov r0, #123 bx lr
The best resource I found on arm assembly was their own reference manual.You can find it here https://developer.arm.com/documentation/ddi0406/cd/