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Index > Macroinstructions > copy data from "virtual"

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Abyx



Joined: 17 Apr 2008
Posts: 9
Abyx
How to copy some data inside virtual ... end virtual?
I found a simple solution, but I don't think that it's good:
Code:
;macro
macro virtual_copy {
      local ..n
      ..n=$-$$
      rept 4 i:0 \{ if i<..n
         load virtual_copy_buf\#i byte from $$+i
      end if \}
      end virtual
      rept 4 i:0 \{ if i<..n
         db virtual_copy_buf\#i
      end if \} }
;test (will display "..passes, 2 bytes")
virtual
     db 2 dup(0)
virtual_copy    
Post 23 Sep 2008, 08:36
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17279
Location: In your JS exploiting you and your system
revolution
I don't know of any other method either. You can see these sort of copy operations in action in my SHA512, RSA and Rijndael (AES) macros.
Post 23 Sep 2008, 08:48
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