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Index > Macroinstructions > Locals and parameters.

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booter



Joined: 08 Dec 2006
Posts: 67
booter
I'm rather confused with proc parameters and locals.
Why can't I use them the same way as "outside" variables?
Code:
StdOutHdl   dd 0  ; handle
 ...
macro TstTst
{stdcall Test,handle}
 ...
proc Test hdl:DWORD
  invoke  WriteFile,[StdOutHdl], ...   ; OK
  invoke  WriteFile,hdl, ... ; compile error (why?)
  invoke  WriteFile,addr hdl, ... ; doesn't work 
  invoke  WriteFile,[hdl], ... ; doesn't work 
endp    

I found some (ugly) solution, but why would I need this?
Code:
  mov     ebx,[hdl]
  mov     ebx,[ebx]
  invoke  WriteFile,ebx, ... ; works    
Post 03 May 2009, 09:17
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17278
Location: In your JS exploiting you and your system
revolution
Works for me:
Code:
include 'win32ax.inc'

proc start hd1:DWORD
  invoke  WriteFile,[hd1]
     invoke  WriteFile,addr hd1
endp

macro A param,[arg] {nop}

macro B [arg]{
  common
  A xyz,arg
}

B 1,2,3,4

.end start    
Post 03 May 2009, 09:52
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Neutrino



Joined: 18 Dec 2008
Posts: 2
Neutrino
To get variable value you should use brackets:
Code:
  macro TstTst   {stdcall Test,[handle]}     

and:
Code:
  invoke  WriteFile,[hdl], ...    
Post 04 May 2009, 08:22
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