Struct offset (2 developers of fasm)

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Index > Macroinstructions > Struct offset (2 developers of fasm)

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Alexandoros

Joined: 20 Aug 2004
Posts: 3

Alexandoros 20 Aug 2004, 21:17

Now i wrote like this:

Code:

 
     ...
    struc   CPoint 
     {
            x rw 1
            y rw 1
            z rw 1   
      }
       ....
    point     CPoint 
     .....

     mov    si,point
    mov    [si + point.z - point], 12

Is it possible to do something like this:

Code:

     
mov    si,point
mov    [si + CPoint.z ], 12

with result exactly before ??
p.s. sorry for my english

20 Aug 2004, 21:17

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 20 Aug 2004, 21:26

Code:

virtual at si
  si_point CPoint
end virtual

mov si,point
mov [si_point.z],12

You can use whatever label you want.

20 Aug 2004, 21:26

Alexandoros

Joined: 20 Aug 2004
Posts: 3

Alexandoros 20 Aug 2004, 23:11

ye,ye i know about this way, but how about 20 different struct and 4 registers (for example) = 80 virtual define? Too much.
Macro? - Only 1 name, possible many mistake, and code will be not so good readable. But its IMHO.

I can not speak you what to do, but if future with local offset inside struct will be introduced - its will be very cool.

20 Aug 2004, 23:11

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 20 Aug 2004, 23:39

When you want just the local offset, do the same what the "struct" macro does:

Code:

virtual at 0
  CPoint CPoint 
end virtual 

mov si,point 
mov [si+CPoint.z],12

20 Aug 2004, 23:39

Alexandoros

Joined: 20 Aug 2004
Posts: 3

Alexandoros 22 Aug 2004, 05:07

Thx, its work.

22 Aug 2004, 05:07

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