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Index > Compiler Internals > [mod] complete restore

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idle



Joined: 06 Jan 2011
Posts: 359
Location: Ukraine
idle
Code:
;
;Hi.
;I have a file of next contents:
;

;re-defining MUCH times i.e. a one has no count
eq1 equ ...
eq2 equ ...
... 
eq1 equ ...
eq2 equ ...
...

;next label definition produce error if there is no CORRECT count
;restore eq1,eq1,eq2,eq2
eq1: 
eq2:

;could fasm introduce:
complete restore eq1, eq2

;thanks
    
Post 08 Oct 2014, 13:26
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7718
Location: Kraków, Poland
Tomasz Grysztar
Code:
macro complete_restore [name] {
  irpv v,name \{ restore name \}
}    
Works with fasm 1.71.18+.

PS Yes, I forgot to add something about this new directive into official manual. I need to correct this ASAP.
Post 08 Oct 2014, 13:31
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idle



Joined: 06 Jan 2011
Posts: 359
Location: Ukraine
idle
Thank you much.
What does "v" mean in your exaple?
Post 08 Oct 2014, 14:04
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7718
Location: Kraków, Poland
Tomasz Grysztar
It is a name of parameter that iterates through all the values of symbolic variable. In this case it is not used, because for the RESTORE directive only the name of variable (not its value) is needed.
Post 08 Oct 2014, 14:33
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l_inc



Joined: 23 Oct 2009
Posts: 881
l_inc
Tomasz Grysztar
Is the nx flag in PE worth mentioning as well? And I think the documentation is a bit misleading about the addressing space labels, cause their limitation is not about being unable to reference a not yet assembled addressing space, but rather about not being able to forward-reference addressing space labels at all.

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Post 08 Oct 2014, 15:33
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7718
Location: Kraków, Poland
Tomasz Grysztar
l_inc wrote:
Tomasz GrysztarAnd I think the documentation is a bit misleading about the addressing space labels, cause their limitation is not about being unable to reference a not yet assembled addressing space, but rather about not being able to forward-reference addressing space labels at all.
I have left this additional limitation as undefined, because I was not sure whether it is going to stay this way. My intention was to make that paragraph more about the general language specification than about the current implementation. Perhaps I should create a separate document discussing the limitations of current implementation that are not imposed on it by the language design.
Post 08 Oct 2014, 16:00
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l_inc



Joined: 23 Oct 2009
Posts: 881
l_inc
Tomasz Grysztar
Quote:
was not sure whether it is going to stay this way

That was actually my assumption. Btw. I didn't encounter any cases where current behaviour would be noticeably disadvantageous. Improving on forward referencing would certainly make the architecture look more solid, but practical importance is not obvious for me.

Quote:
Perhaps I should create a separate document discussing the limitations of current implementation that are not imposed on it by the language design.

This could be just an appendix in the main manual, so that it would be easy to cross-reference related pieces of information. Like
Quote:
... and assembler signalizes an overflow error if because of its limitations it is not table to perform the required calculation (see Appendix 2 for current implementation)

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Post 08 Oct 2014, 19:33
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