Dynamic formation label and macro

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xubej

Joined: 12 Oct 2015
Posts: 2

xubej 12 Oct 2015, 08:11

Hi all.

There is:

Code:

lab_1:
    mov eax, 1
lab_2:
    mov eax, 2

Then i do so:

Code:

macro jmp a { jmp lab_#a }

rept 10 c { jmp 1 + c mod 2 }

Comes:

and be:

What am i doing wrong?

12 Oct 2015, 08:11

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 19086
Location: In your JS exploiting you and your system

revolution 12 Oct 2015, 08:15

To do arithmetic with macro arguments you need to use rept:

Code:

lab_1:
    mov eax, 1
lab_2:
    mov eax, 2

macro jmp a { jmp lab_#a }

rept 10 c {
        rept 1 v:1 + c mod 2 \{jmp v\}
}

12 Oct 2015, 08:15

xubej

Joined: 12 Oct 2015
Posts: 2

xubej 12 Oct 2015, 08:19

Thank you very much!

12 Oct 2015, 08:19

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