macro for arg.

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Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 26 Jul 2020, 15:33

I need write macro to ignor or use last parameter.
PutVal macro get only 3 or 4 params

Code:

PutVal 10,20,30,mem1 
PutVal 12,13,22

PutVal 1,0,3,mem2
PutVal 2,3,11

This give this code:

Code:

;----first PutVal
mov eax,mem1
mov [eax],10
mov [eax+4],20
mov [eax+8],30
add eax,12
;----second PutVal
mov [eax],12
mov [eax+4],13
mov [eax+8],22
add eax,12
;----3 PutVal
mov eax,mem2
mov [eax],1
mov [eax+4],0
mov [eax+8],3
add eax,12
;----4 PutVal
mov [eax],2
mov [eax+4],3
mov [eax+8],11
add eax,12

26 Jul 2020, 15:33

DimonSoft

Joined: 03 Mar 2010
Posts: 1228
Location: Belarus

DimonSoft 26 Jul 2020, 18:09

Code:

macro PutVal V1*, V2*, V3*, Addr
{
  match any , Addr \{ mov eax, Addr \}
  mov dword [eax], V1
  mov dword [eax + 4], V2
  mov dword [eax + 8], V3
  add eax, 12
}

I wrote this directly in browser but it should work. You may also want to check for mov eax, eax case, etc. I doubt such macros are of large usefulness though.

26 Jul 2020, 18:09

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 26 Jul 2020, 18:33

Thanks ! Work

Question. Why need write V1* ?

26 Jul 2020, 18:33

DimonSoft

Joined: 03 Mar 2010
Posts: 1228
Location: Belarus

DimonSoft 26 Jul 2020, 18:45

It is not mandatory. But this makes FASM ensure that something non-empty is passed as this parameter. See Section 2.3.3 for details.

26 Jul 2020, 18:45

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