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Index > Macroinstructions > macro number how do ?

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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 23 Jul 2020, 15:55
Code:
macro mM2 { mov eax,1 }

In code:
zz EQU 2
mM#zz
    

Get fasm error.

I expect get mM2
Post 23 Jul 2020, 15:55
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DimonSoft



Joined: 03 Mar 2010
Posts: 1153
Location: Belarus
DimonSoft 23 Jul 2020, 16:06
AFAIR, # doesn’t work outside macros.
Post 23 Jul 2020, 16:06
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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 23 Jul 2020, 16:16
I try this but get Fasm error . Illegal instruction mM2
Code:
macro mM2 { mov eax,1 }
macro mMmm chTp {     
            zz EQU mM#chTp
            zz
            }
In code:
mMmm 2    


Last edited by Roman on 24 Jul 2020, 11:36; edited 1 time in total
Post 23 Jul 2020, 16:16
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DimonSoft



Joined: 03 Mar 2010
Posts: 1153
Location: Belarus
DimonSoft 24 Jul 2020, 11:29
Isn’t mM2 an illegal instruction?
Post 24 Jul 2020, 11:29
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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 24 Jul 2020, 11:37
O! This work !
Code:
macro mM2 { mov eax,1 }
macro mMmm chTp {     
            mM#chTp           
            }
In code:
mMmm 2 
    


But not work if:
Code:
Rr EQU 2
mMmm Rr
    
Post 24 Jul 2020, 11:37
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19093
Location: In your JS exploiting you and your system
revolution 24 Jul 2020, 12:34
You misunderstand the rules for EQU. Macros arguments don't translate EQUs.

If you insist upon using EQU then use match to translate the EQU arguments.
Code:
macro mM2 { mov eax,1 }
macro mMmm chTp { mM#chTp }

mMmm 2

Rr EQU 2
match x,Rr{mMmm x}    
Post 24 Jul 2020, 12:34
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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 24 Jul 2020, 13:08
I write this:
Code:
macro mM2 { mov eax,1 }
macro mMmm chTp {    
           match dst src, chTp \{
           mM#dst    \}
            }
In code:
 zz EQU 2
mMmm zz
    

Compile but nothing asm code get !
Empty ! I check in IDA Pro. Must be mov eax,1

What i do wrong ?
Post 24 Jul 2020, 13:08
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19093
Location: In your JS exploiting you and your system
revolution 24 Jul 2020, 13:15
That match fails because you asked for two parameters (dst and src) but only provided one (zz).
Post 24 Jul 2020, 13:15
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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 24 Jul 2020, 13:17
Fasm get error illegal instruction mMdst:
Code:
macro mMmm chTp {    
           match dst, chTp \{
           mM#dst    \}
            }
    
      dds EQU 2
      mMmm dds
    
Post 24 Jul 2020, 13:17
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19093
Location: In your JS exploiting you and your system
revolution 24 Jul 2020, 13:25
You need to escape the #
Code:
mM\#dst    
Post 24 Jul 2020, 13:25
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Roman



Joined: 21 Apr 2012
Posts: 1316
Roman 24 Jul 2020, 13:39
Thanks ! Work !
Its magic ! I got into a fairy tale Smile
Post 24 Jul 2020, 13:39
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DimonSoft



Joined: 03 Mar 2010
Posts: 1153
Location: Belarus
DimonSoft 24 Jul 2020, 15:57
PREPSRC should help a lot.
Post 24 Jul 2020, 15:57
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