Bird
0
0

What is the primary role of the exception entry sequence in ARM architecture?

easy📝 Conceptual Q1 of 15
ARM Architecture - Exception and Interrupt Model
What is the primary role of the exception entry sequence in ARM architecture?
ATo execute the exception handler code directly
BTo save the current processor state and switch to the exception mode
CTo reset the processor to its initial state
DTo clear all registers before handling the exception
Step-by-Step Solution
Solution:

  1. Step 1: Understand the purpose of exception entry

    The exception entry sequence saves the current state to allow returning later.

  2. Step 2: Identify the mode switch

    The processor switches to a special mode to handle the exception safely.

  3. Final Answer:

    To save the current processor state and switch to the exception mode -> Option B

  4. Quick Check:

    Exception entry = Save state and switch mode [OK]
Quick Trick: Exception entry saves state and switches mode [OK]
Common Mistakes:
  • Thinking exception entry resets the processor
  • Assuming it clears all registers
  • Believing it runs handler without saving state

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More ARM Architecture Quizzes
Control Flow Instructions - If-else implementation in assembly - Quiz 6medium Control Flow Instructions - Loop implementation in assembly - Quiz 6medium Exception and Interrupt Model - Vector table structure - Quiz 7medium Exception and Interrupt Model - PendSV and SysTick exceptions - Quiz 6medium Exception and Interrupt Model - Why exceptions handle hardware events - Quiz 6medium Exception and Interrupt Model - Why exceptions handle hardware events - Quiz 10hard Exception and Interrupt Model - Vector table structure - Quiz 12easy Power Modes - Sleep mode (WFI instruction) - Quiz 1easy Power Modes - Wake-up sources - Quiz 3easy Subroutines and Stack - Why subroutines enable modular assembly code - Quiz 4medium