flat assembler
> Main > equ with if |
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Code: Bitness = 16 if Bitness=16 BaseReg equ bp else BaseReg equ ebp end if mov al,[BaseReg+4] ;always ebp it is possible to replace "equ" with something, if only works with "Bitness=16" and "Bitness=32" without using the separate file? _________________ smaller is better |
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12 Nov 2017, 18:03 |
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You can replace the if with match and make bitness an equ.
Code: Bitness equ 16 match =16,Bitness { BaseReg equ bp } match =32,Bitness { BaseReg equ ebp } |
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12 Nov 2017, 18:06 |
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thank you!
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12 Nov 2017, 18:09 |
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Alternatively:
Code: Bitness = 16 if Bitness=16 label BaseReg at bp else label BaseReg at ebp end if |
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12 Nov 2017, 18:17 |
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Tomasz, your alternative is the best!
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12 Nov 2017, 18:32 |
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Note that it has a potential problem that you cannot re-define BaseReg for other part of code when it is defined as a label. If such problem occurs, you can get around it with a simple "undefine" macro:
Code: macro undefine name { local new define name new } Bitness = 32 undefine BaseReg if Bitness=16 label BaseReg at bp else label BaseReg at ebp end if |
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12 Nov 2017, 18:47 |
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version with "equ" however is better because it doesn't refer only to addressing.
Code: push BaseReg ;push (e)bp is possible _________________ smaller is better |
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12 Nov 2017, 22:34 |
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Oh, you're right. This is a limitation of fasm 1 engine that I managed to get rid of in fasm g.
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12 Nov 2017, 22:54 |
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