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Index > Macroinstructions > Looking to make something like this

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shism2



Joined: 14 Sep 2005
Posts: 248
shism2
Hope someone helps Very Happy


Well, I'm in need of something like this

mov edx, xorcrypt <a address>,key


In puesdo form :

Code:
macro xorcrypt addressx,key

{
load addressx to b

b  = addressx xor key

store b at  ??????

}    


This would be very difficult from the looks of it. If anyone can help please do.
Post 21 May 2006, 23:40
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Reverend



Joined: 24 Aug 2004
Posts: 408
Location: Poland
Reverend
AFAIK, the idea of fasm was not to allow such macros. They can be only used separately (in the way as instructions). So macro cannot be used as operand of other instruction.
Post 25 May 2006, 17:21
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
Post 25 May 2006, 17:42
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LocoDelAssembly
Your code has a bug


Joined: 06 May 2005
Posts: 4633
Location: Argentina
LocoDelAssembly
However maybe he can take some ideas from invoke macro which allows to pass as parameter another invoke.

[edit] Maybe you want this?
Code:
macro mov dest, src
{ 
  if 1 
  match =xorcrypt imm =, key, src 
  \{
    if imm eqtype 1 | imm eqtype ''
      mov dest, imm xor key
    else
      display "Invalid immediate operand!!"
      err
    end if
  else 
  \} 
    mov dest, src 
  end if 
} 

mov edx, <xorcrypt address, -1> ; 66 BA F3 FF FF FF
mov edx, address                ; 66 BA 0C 00 00 00 

address:    
[/edit]
Post 25 May 2006, 20:15
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