[Solved] Identify the error in this ARM assembly if-else snippet:CMP R3, #10 BGT greater MOV R0, #5 greater: MOV R0, #15 | ARM Architecture

ARM Architecture - Control Flow Instructions

Identify the error in this ARM assembly if-else snippet:

CMP R3, #10
BGT greater
MOV R0, #5
greater:
MOV R0, #15

AIncorrect CMP instruction

BMissing unconditional branch after MOV R0, #5

CWrong label name

DMOV instruction syntax error

Step-by-Step Solution

Solution:

Step 1: Analyze flow after MOV R0, #5
Without a branch, code continues to 'greater' label, overwriting R0.
Step 2: Identify missing branch
To prevent fall-through, an unconditional branch is needed after MOV R0, #5.
Final Answer:
Missing unconditional branch after MOV R0, #5 -> Option B
Quick Check:
Missing branch causes fall-through error [OK]

Quick Trick: Add unconditional branch to avoid fall-through in if-else [OK]

Common Mistakes:

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