Measuring assembly instruction byte size (code length)

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Trond
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Measuring assembly instruction byte size (code length)

Post by Trond »

Code: Select all

; Measure the code size in bytes of assembly instructions
!@@:
; Instructions here
!mov [v_size], $-@b
Debug size
Example:

Code: Select all

!@@:
!mov rax, 0
!mov [v_size], $-@b
Debug size

!@@:
!xor rax, rax
!mov [v_size], $-@b
Debug size

!@@:
!push 0
!pop  rax
!mov [v_size], $-@b
Debug size
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Olliv
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Re: Measuring assembly instruction byte size (code length)

Post by Olliv »

Good stuff. Bypasses Disassembly lib which is more complex to code, and less light than this.
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Mijikai
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Re: Measuring assembly instruction byte size (code length)

Post by Mijikai »

Olliv wrote:Good stuff. Bypasses Disassembly lib which is more complex to code, and less light than this.
Don't u need to know the size already since u need to know where to put this... ?
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Olliv
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Re: Measuring assembly instruction byte size (code length)

Post by Olliv »

https://www.purebasic.com/documentation ... embly.html
Mijikai wrote:Don't u need to know the size already since u need to know where to put this... ?
I have no time to need to know where to put this : I was stolen this before. But I stamped a QRCode on this. No problem anymore.
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