Its strange to me, so apologies for the iffy title. What is the purpose of this instruction?
lea esi, [esi]
I am not sure if you need any surrounding context or it can be explained in isolation. Let me know either way.
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3That's a nop, used as padding probably. – Jester Feb 24 '17 at 14:40
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@Jester: Sorry, I don't follow. How does it help in padding? – ForeverLearning Feb 24 '17 at 14:41
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It takes up bytes so the following instruction will be aligned appropriately. – Jester Feb 24 '17 at 14:42
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Occupies space but doesn't alter the program behaviour: padding – Margaret Bloom Feb 24 '17 at 14:42
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That explains it. Could one of you fine folks hoist this as an answer so I can accept it or is it too much trouble? – ForeverLearning Feb 24 '17 at 14:43
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1If I recall correctly, this specific padding is used in Windows functions to allow for hot-patching. – fuz Feb 24 '17 at 14:50
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@fuz that's a different one. – Jester Feb 24 '17 at 15:19
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1@Jester Oh yeah, that was `mov edi,edi`. – fuz Feb 24 '17 at 15:21
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http://stackoverflow.com/questions/2703394/whats-the-point-of-lea-eax-eax – snoone Feb 24 '17 at 19:41