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Index > Macroinstructions > macro not see value.

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Roman



Joined: 21 Apr 2012
Posts: 1315
Roman 19 Dec 2022, 12:50
Fasmw 1.73
Code:
macro StateHero val {
inc [.v1] ;using as virtual ? for offset [ebx+.v1]
sub [.v2],10
}
;I have 3 equal procs like proc A
proc A
mov edx,.Hero
call B
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp

proc B
 StateHero edx ;error fasm. Undefined .v1 and .v2
 ret
endp
    

My code more big and complicated. And i want easy fix this problem.
And dont write new struct for Hero.
Post 19 Dec 2022, 12:50
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Roman



Joined: 21 Apr 2012
Posts: 1315
Roman 19 Dec 2022, 18:07
My variant.
Code:
macro StateHero val {
inc [ecx+.v1-.v1] 
sub [ecx+.v2-.v1],10
}
;I have 3 equal procs like proc A
proc A
mov edx,.Hero
mov ecx,.v1
call B
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp

proc B
 StateHero edx 
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp    
Post 19 Dec 2022, 18:07
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19085
Location: In your JS exploiting you and your system
revolution 19 Dec 2022, 20:17
The macro has nothing to do with the problem.
Code:
A:
  .v1 db ?  ; local name has limited scope
B:
  mov al,[A.v1] ; Okay
  mov al,[.v1]  ; undefined B.v1    
You need to fully qualify the name A.v1 or use a global name.
Code:
A:
  ..v1 db ? ; global name is seen everywhere.
B:
  mov al,[..v1] ; Okay    
Post 19 Dec 2022, 20:17
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Roman



Joined: 21 Apr 2012
Posts: 1315
Roman 19 Dec 2022, 21:36
Quote:

A:
..v1 db ? ; global name is seen everywhere.
B:

I have three procs with .v1
Post 19 Dec 2022, 21:36
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Overclick



Joined: 11 Jul 2020
Posts: 590
Location: Ukraine
Overclick 19 Dec 2022, 21:50
Do not forget to call your procedures from anywhere. Othervice the procedure's body will be blank for rest of your program.
Use global label trick for short names.
Post 19 Dec 2022, 21:50
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19085
Location: In your JS exploiting you and your system
revolution 19 Dec 2022, 22:04
To fully qualify the name you need to give the prefix.
Code:
macro StateHero prefix,val {
  inc [prefix#.v1]
  sub [prefix#.v2],val
}
proc A
  .v1:
  .v2:
endp
proc B
  StateHero A,foo
;...    
Post 19 Dec 2022, 22:04
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Roman



Joined: 21 Apr 2012
Posts: 1315
Roman 20 Dec 2022, 05:31
This variant not for my task.
Proc B call three procs.
Proc A, proc A2, proc A3

Code:
proc A
mov edx,.Hero
call B
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp

proc A2
mov edx,.Hero
call B
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp

proc A3
mov edx,.Hero
call B
 ret
.v1 db 0
align 16
.Hero dd 0,0,0,0
         dd 0,0,0,0
.v2 dd 0
endp
    
Post 20 Dec 2022, 05:31
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Roman



Joined: 21 Apr 2012
Posts: 1315
Roman 20 Dec 2022, 08:13
virtual not support align 16 ! fasm get error on align 16 in virtual.
Post 20 Dec 2022, 08:13
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