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Index > Macroinstructions > [SOLVED]Fasm1: how to prevent definition

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ProMiNick



Joined: 24 Mar 2012
Posts: 399
Location: Russian Federation, Sochi
ProMiNick
how to prevent definition of one of label in macro test if same label defined in macro test2?:
Code:
macro test name,[label,string] {
        if used label
                if ~ defined delayed.#label
                        label dd 0
                end if
        end if }

macro test2 name,[label,string] {
        if used label
                delayed.#label:
                        label dd 0
        end if }    
Code:
virtual at 0
dd start,finish
end virtual

test dummy,start,,\
           finish

test2 dummy,start     


thanks.

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Last edited by ProMiNick on 10 Dec 2019, 10:06; edited 1 time in total
Post 10 Dec 2019, 08:02
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7494
Location: Kraków, Poland
Tomasz Grysztar
The problem here is that fasm 1 terminates assembly when it sees a duplicate label error (your method would work correctly with fasmg, where all errors are delayed and resolvable). So you need to add additional check to prevent defining the label twice in the same pass:
Code:
macro test name,[label,string] {
        if used label
                if ~ defined delayed.#label
                        label dd 0
                end if
        end if }

macro test2 name,[label,string] {
        if used label
                delayed.#label:
                if ~ definite label
                        label dd 0
                end if
        end if }    
Post 10 Dec 2019, 09:56
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ProMiNick



Joined: 24 Mar 2012
Posts: 399
Location: Russian Federation, Sochi
ProMiNick
Thanks Tomasz.
definite is realy solves problems that were unrosolvable before.
Post 10 Dec 2019, 10:05
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7494
Location: Kraków, Poland
Tomasz Grysztar
This could be solved without DEFINITE as well, just a bit more complex:
Code:
macro test name,[label,string] {
        if used label
                if ~ defined delayed.#label
                        undelayed.#label:
                        label dd 0
                end if
        end if }

macro test2 name,[label,string] {
        if used label
                delayed.#label:
                if ~ defined undelayed.#label
                        label dd 0
                end if
        end if }    
Post 10 Dec 2019, 10:15
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