Macro something like "MOV EAX, EXTEND_INT(0x1000)"

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alorent

Joined: 05 Dec 2005
Posts: 201

alorent

Hi,

Is it possible to use a macro (or similar construction) inside an instruction? For example, imagine that I want to create a special value from a given integer. Example:

Code:

MOV EAX, MAKE_SPECIAL_INT(0x1000)

I have created something like:

Code:

macro MAKE_SPECIAL_INT value
{
    0xFFFF0000 + value
}

But FASM says "extra caracters on line". Is there any workaround to accomplish that?

Thanks!

20 Dec 2016, 12:00

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 18071
Location: In your JS exploiting you and your system

revolution

fasm doesn't support inline macros. You will need to override the MOV instruction and detect the special values inside that.

20 Dec 2016, 13:15

alorent

Joined: 05 Dec 2005
Posts: 201

alorent

Thanks revolution. No problem, I will use another workaround

Thanks!

20 Dec 2016, 17:43

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