Arm/return

Write a function named func that does nothing and simply returns.

The problems in this collection require you to write functions, rather than a program that simply ends with an infinite loop, unlike some other assembly programming exercises you may have seen. One side effect is that even your top-level function must follow calling conventions, and will need to save/restore registers as necessary.

If your function correctly returns, the test output will show Test completed. Otherwise, it shows Test did not complete.

We usually show you the results of a few easy test cases, but we keep some of the harder test cases secret and show only Correct/Incorrect.

The code following the _start label is for your convenience in writing a program to test your function. There will usually be an example test case written for you to get a feel for what the test input is. Use it as a starting point to test more challenging test input. The _start label is not used when judging: the test code directly calls your function.

Expected solution length: Around 1 line.

Sample Input

[No input]

Sample Output

[No output]

.global _start
_start:   
    // This is for testing your function
    bl  func   // Call your function
               // Your function should return here.
    1: b 1b    // Infinite loop to stop program after testing

func:
    // This is where your code starts running when judging.
    // Write a function here.

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