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Index > Macroinstructions > [solved]macro how get next equ register ?

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Roman



Joined: 21 Apr 2012
Posts: 1701
Roman 14 Dec 2023, 09:58
Code:
forRegs_1 equ eax
forRegs_2 equ ecx
forRegs_3 equ edx
forRegs_4 equ [esi]
macro for num {
      match  _forNxtEq,_forNxtEq \{     
      mov forRegs_\#_forNxtEq,num      
      _forNxtEq equ  _forNxtEq+1      
      \}      
      } 
_forNxtEq equ  1
          for2 10
          for2 20
          for2 30
    

I get all mov eax
But expected
mov eax,10
mov ecx,20
mov edx,30


Last edited by Roman on 14 Dec 2023, 10:25; edited 1 time in total
Post 14 Dec 2023, 09:58
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 20060
Location: In your JS exploiting you and your system
revolution 14 Dec 2023, 10:02
Code:
_forNxtEq =      
You can't use = with the preprocessor. Try with equ

Another problem is this "_forNxtEq equ _forNxtEq+1". The preprocessor doesn't compute results with equ, all it does is keep appending "+1" to the end. Try with rept instead.
Post 14 Dec 2023, 10:02
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 20060
Location: In your JS exploiting you and your system
revolution 14 Dec 2023, 10:15
To illustrate the effect of using + with equ, see this:
Code:
a equ 1
a equ a+1
a equ a+1
a equ a+1
a equ a+1
a equ a+1

match A,a {
        irps x,A \{
                display \`x
        \}
}    
Code:
~ fasm test.asm 
flat assembler  version 1.73.31  (16384 kilobytes memory)
1+1+1+1+1+1
1 passes, 0 bytes.    
Post 14 Dec 2023, 10:15
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Roman



Joined: 21 Apr 2012
Posts: 1701
Roman 14 Dec 2023, 10:16
Thanks.
Rept help me.
Post 14 Dec 2023, 10:16
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