ARM Architecture - Control Flow Instructions
In ARM assembly, which instruction is used to set a condition flag based on the comparison of two registers?
In ARM assembly, which instruction is used to set a condition flag based on the comparison of two registers?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the purpose of CMP
The CMP instruction compares two registers and sets condition flags based on the result.Step 2: Identify other instructions' roles
MOV copies data, ADD adds values, STR stores data; none set condition flags.Final Answer:
CMP sets condition flags after comparison -> Option CQuick Check:
Comparison instruction = CMP [OK]
Quick Trick: CMP sets flags for if-else decisions in ARM assembly [OK]
Common Mistakes:
- Confusing MOV with CMP
- Using ADD to compare
- Thinking STR sets flags
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