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Why is it important to have a base case in a recursive ARM assembly function?

hard📝 Conceptual Q10 of 15
ARM Architecture - Subroutines and Stack
Why is it important to have a base case in a recursive ARM assembly function?
ATo stop infinite recursion and allow function to return
BTo speed up execution by skipping calls
CTo use fewer registers during recursion
DTo avoid using the stack
Step-by-Step Solution
Solution:

  1. Step 1: Define base case purpose

    The base case stops recursion by providing a condition where the function returns without calling itself.

  2. Step 2: Prevent infinite recursion

    Without a base case, the function would call itself endlessly, causing stack overflow and crash.

  3. Final Answer:

    To stop infinite recursion and allow function to return -> Option A

  4. Quick Check:

    Base case = recursion stop condition [OK]
Quick Trick: Base case stops recursion to prevent crashes [OK]
Common Mistakes:
  • Thinking base case speeds execution
  • Believing base case reduces register use
  • Assuming base case avoids stack usage

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