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Lecture 03: x86 instruction set

Lecture 03: x86 instruction setAnton BurtsevSeptember, 2021 What does CPU do internally? CPU execution loop CPU repeatedly reads instructions from memory Executes them Example ADD EDX, EAX // EDX = EAX + EDX What are those instructions?(a brief introduction to x86 instruction set)This part is based on David Evans x86 Assembly ~evans/cs216/ Note We ll be talking about 32bit x86 instruction set The version of xv6 we will be using in this class is a 32bit operating system You re welcome to take a look at the 64bit port x86 instruction set The full x86 instruction set is large and complex But don t worry, the core part is simple The rest are various extensions (often you can guess what they do, or quickly look it up in the manual)

Lecture 03: x86 instruction set Anton Burtsev September, 2021. What does CPU do internally? CPU execution loop

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