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Unneeded SIB byte #5

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gaul opened this issue Sep 6, 2020 · 1 comment
Open

Unneeded SIB byte #5

gaul opened this issue Sep 6, 2020 · 1 comment

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@gaul
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gaul commented Sep 6, 2020

Simple indirect references can elide the SIB byte:

C645 04 05           mov byte[ebp+4],5
C64465 04 05         mov byte[ebp+4],5
C64425 04 05         mov byte[ebp+4],5
C644A5 04 05         mov byte[ebp+4],5
C644E5 04 05         mov byte[ebp+4],5

From https://www.strchr.com/machine_code_redundancy.
@gaul
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gaul commented Oct 11, 2021

Other resources:

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@gaul