fasm-help

[fasm-help] Variable test

[Serge T. <ts...@ra...>]

Dear Tomasz Grysztar!
Thank you very much for the FASM, magnificent and elegant tool!

J have a little problem:
macro testnumeric var
{
if +var eq var
    display 'numeric',0
else
    display 'symbol',0
end if
}
testnumeric 0                ; -> ok
testnumeric eax             ;-> ok
testnumeric al                ;-> Error: reserved word used as symbol

With many,many thanx for the support. S.Tserkovitsky
ts...@ra...

[fasm-help] Variable test

[Serge T. <ts...@ra...>]

J'm using the next macro:

macro _compare var1,cond,var2
{
if ~ ( cond in <CMP_OPPCODES,CMP_BITS,CMP_NBITS> )
    _error 'unavailable compare instruction'
else if ( cond in <CMP_BITS,CMP_NBITS> )
    test    var1,var2
else if ( var1 in <al,bl,cl,dl,ah,bh,ch,dh,ax,bx,cx,dx,eax,ebx,ecx,edx,si,di,esi,edi> ) & ( var2 eq +var2 )
    if ~ var2
        test    var1,var1
    else
        cmp     var1,var2
    end if
else
    cmp     var1,var2
end if
}

Parser error if var2 in <al,ah> etc.
May be another way for numeric variable test?

With many thanks, S.Tserkovitsky
ts...@ra...

Re: [fasm-help] Variable test

[<ult...@no...>]

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----- Original Message -----
From: "Serge Tserkovitsky" <ts...@ra...>
To: <fas...@li...>
Sent: Tuesday, November 19, 2002 2:09 PM
Subject: [fasm-help] Variable test


> J'm using the next macro:
>
> macro _compare var1,cond,var2
> {
> if ~ ( cond in <CMP_OPPCODES,CMP_BITS,CMP_NBITS> )
>     _error 'unavailable compare instruction'
> else if ( cond in <CMP_BITS,CMP_NBITS> )
>     test    var1,var2
> else if ( var1 in
<al,bl,cl,dl,ah,bh,ch,dh,ax,bx,cx,dx,eax,ebx,ecx,edx,si,di,esi,edi> ) & (
var2 eq +var2 )
>     if ~ var2
>         test    var1,var1
>     else
>         cmp     var1,var2
>     end if
> else
>     cmp     var1,var2
> end if
> }
>
> Parser error if var2 in <al,ah> etc.
> May be another way for numeric variable test?
>
> With many thanks, S.Tserkovitsky
> ts...@ra...
>
>
>
>
>
>
>
>
>
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Re: [fasm-help] Variable test

[Tomasz G. <fa...@me...>]

Tuesday, November 19, 2002, 10:09:32 AM, you wrote:

ST> J'm using the next macro:

> May be another way for numeric variable test?

"var2 eq +var2" is not a test for number, it can only distinquish the
quoted string data from a standard number. In your case you probably
want to distinguish the register from number. Maybe you should define
also "REGISTERS equ al,bl,cl,dl,ah,bh,ch,dh,ax,bx,cx,dx,eax,ebx,ecx,edx,si,di,esi,edi"
and then do the check: "if var1 in <REGISTERS> & ~ var2 in <REGISTERS>".

-- 
Tomasz

Re: [fasm-help] Variable test

[Tomasz G. <fa...@me...>]

> macro testnumeric var
> {
> if +var eq var
>     display 'numeric',0
> else
>     display 'symbol',0
> end if
> }
> testnumeric 0                ; -> ok
> testnumeric eax             ;-> ok
> testnumeric al                ;-> Error: reserved word used as symbol
This error come from the parser. "eax" is allowed in expressions,
because it can be used as an addressing register (inside square
brackets, after "ptr" operator, or after "at" operator with "label"
and "virtual" directive), "al" can't and so is not allowed.

-- 
Tomasz