macro and % how using ?

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Roman

Joined: 21 Apr 2012
Posts: 1769

Roman 11 Apr 2023, 13:29

Fasmw 1.73
I know repeat and while and times using % as counter.
But how using % in macro or in match ?

Code:

macro oo [c] {
      forward
      mov al,c
;macro see % but not incremented %
;or how set % = 7 ?
     mov ah,%  ;how inc value in % ? Always %=0
      } 

oo  5,5,5 
;IDA Pro show asm out
mov al,5
mov ah,0
mov al,5
mov ah,0
mov al,5
mov ah,0

;I think this
mov al,5
mov ah,1
mov al,5
mov ah,2
mov al,5
mov ah,3

11 Apr 2023, 13:29

macomics

Joined: 26 Jan 2021
Posts: 928
Location: Russia

macomics 11 Apr 2023, 14:04

What does % (cycle counter) and match or macro have to do with it?

11 Apr 2023, 14:04

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20301
Location: In your JS exploiting you and your system

revolution 11 Apr 2023, 14:12

% is an assembler variable.

The preprocessor doesn't process it at all.

11 Apr 2023, 14:12

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20301
Location: In your JS exploiting you and your system

revolution 11 Apr 2023, 14:13

To use % you need an assembler loop:

Code:

while % <= 6
  display % + '0'
end while

11 Apr 2023, 14:13

Roman

Joined: 21 Apr 2012
Posts: 1769

Roman 11 Apr 2023, 14:28

Sad.
After while % <= 6 end while %=0
Not %=6

11 Apr 2023, 14:28

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20301
Location: In your JS exploiting you and your system

revolution 11 Apr 2023, 15:06

You can use that to know if your code is inside a loop. Since % is 1 based the only time you see 0 is outside a loop.

Code:

if % = 0
  display 'I am not inside a loop', 13, 10
else
  display 'I am inside a loop. Do you see me multiple times?', 13, 10
end if

11 Apr 2023, 15:06

Hrstka

Joined: 05 May 2008
Posts: 56
Location: Czech republic

Hrstka 11 Apr 2023, 15:15

What about this?

Code:

macro oo [c] {
  common
    local v
    v = 0
  forward
    v = v + 1
    mov al,c
    mov ah,v
}

11 Apr 2023, 15:15

Roman

Joined: 21 Apr 2012
Posts: 1769

Roman 11 Apr 2023, 15:23

Hrstka
This variant I know.

11 Apr 2023, 15:23

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