Define struct/macro

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Uwar

Joined: 09 Oct 2009
Posts: 11

Uwar 13 Oct 2009, 14:57

Is it possible to create struct/macro which would works as 'db', 'dw', etc. directives? I mean something like a 'typedef' in C.

Code:

if expr
  struc da x{
    db x
  }
else
  struc dc x{
    dw x
  }
end if

and then

Code:

a da 0x0           ; works
b da 0x0, 0x0      ; fails
c da 'bytes', 0x0  ; fails

13 Oct 2009, 14:57

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20522
Location: In your JS exploiting you and your system

revolution 13 Oct 2009, 15:01

Two problems:

1) you need square brackets.

Code:

  struc da [x]{ common
    db x
  }

2) the if-else-endif block won't work the way you want. Both 'da' and 'dc' are always defined no matter what 'expr' is. This is a consequence of the preprocessor/assembler separation in fasm.

13 Oct 2009, 15:01

Uwar

Joined: 09 Oct 2009
Posts: 11

Uwar 13 Oct 2009, 15:20

revolution wrote:

Two problems:
2) the if-else-endif block won't work the way you want. Both 'da' and 'dc' are always defined no matter what 'expr' is. This is a consequence of the preprocessor/assembler separation in fasm.

Oh It was only my writing mistake. I had mean:

Code:

if expr
  struc da [x]{
    common
    db x
  }
else
  struc da [x]{
    common
    dw x
  }
end if

Thank's a lot, but there is still a one problem:

Code:

var da 'text', 0x0 ; fails when da is dw

Is it possible to define wide characters?

13 Oct 2009, 15:20

r22

Joined: 27 Dec 2004
Posts: 805

r22 13 Oct 2009, 15:30

Code:

widechar du 'abcdefg'

13 Oct 2009, 15:30

Uwar

Joined: 09 Oct 2009
Posts: 11

Uwar 13 Oct 2009, 15:35

Great

Thank's!

13 Oct 2009, 15:35

Remy Vincent

Joined: 16 Sep 2005
Posts: 155
Location: France

Remy Vincent 13 Oct 2009, 15:49

Would it be possible to change this great topic to MACRO topics section ?

I have never been able to read MACRO topics Embarassed

, and I will probably never be able to be involved with MACRO comments ... Embarassed

_________________
Groups lower your IQ

13 Oct 2009, 15:49

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