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Index > Macroinstructions > determining the type of macro arguments

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silkodyssey



Joined: 02 Oct 2003
Posts: 205
Location: St.Vincent & the Grenadines
silkodyssey
Fasm gurus Very Happy ,

I am reading up on macros in fasm and writing some nice ones myself Smile I've read about a feature that I would like to have more information about. In the fasm documentation it says I can determine is an argument passed to a macro is a string constant by using eqtype, for instance.. if strConst eqtype "". I would like to know if I can use it with other data types so that I can do something like
if strConst eqtype dword or if strConst eqtype byte etc.

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silkodyssey
Post 14 Nov 2003, 05:44
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7419
Location: Kraków, Poland
Tomasz Grysztar
No, it distinguishes only parsing-related types of "source components". That means it can distinguish between:

  • individual quoted strings (those not being a part of numerical expression),
  • floating point numbers,
  • any numerical expression (note that any unknown word will be treated as label, so it also will be seen as such expression),
  • addresses - the numerical expressions in square brackets (with size operators and segment prefixes),
  • instruction mnemonics,
  • registers,
  • size operators,
  • near/far operators,
  • use16/use32 operators

(I tried to provide a full list this time). When you compare any symbolic values with "eqtype" operator, they can consist of more than one of the above components - in such case "eqtype" returns true only if they contain components of the same type in exacly the same order. For example, the expression
Code:
 4 eax eqtype 8+8 st0    

is true, as both values consist of numerical expression and register.
Post 14 Nov 2003, 09:40
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silkodyssey



Joined: 02 Oct 2003
Posts: 205
Location: St.Vincent & the Grenadines
silkodyssey
Thank you Privalow, eqtype might not work the way I thought it did but you have given me some useful information that I can use. I like the fasm macro system, very powerful.Smile Are there any other features of the macro system that the documentation does not explain?

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silkodyssey
Post 14 Nov 2003, 11:49
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