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Index > Macroinstructions > Macro arguments in the calculations

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hidden



Joined: 14 Feb 2007
Posts: 49
hidden
While I was typing my program, I discovered this situation. FASM macroprocesso doesn't separate arguments and apply to them usual operator's priority.

macro _db v { db v and 0FFh }

_db 0FFFh + 0 ; db 0FFFh + (0 and 0FFh)

That what I've done to all my calculations inside macro blocks.

macro _db v { db (v) and 0FFh }

_db 0FFFh + 0 ; db (0FFFh + 0) and 0FFh

It's not a bug, but may be useful in the manual.

PS Thx, it's the best assembler I've ever seen Smile
PPS I would like to see in future version possibility to add debug information to the (PE)executable files.

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Post 14 Feb 2007, 20:20
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Borsuc



Joined: 29 Dec 2005
Posts: 2466
Location: Bucharest, Romania
Borsuc
Hi

Macroprocessor doesn't apply operator priority, it just replaces the parameters with the given text Wink and it isn't supposed to make things unexpectedly like prioritying the operators
Post 16 Feb 2007, 17:13
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
hidden: if you read manual carefully, you will see that macro does just textual substition. then, it is clear that:
Code:
macro _db v { db v and 0FFh }
_db 0FFFh + 0 ;    
becomes
Code:
db 0FFFh + 0 and 0FFh    

and
Code:
macro _db v { db (v) and 0FFh } 
_db 0FFFh + 0    

becomes
Code:
db (0FFFh+0) and 0FFh    
Post 16 Feb 2007, 22:15
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