Fasm 1.73 How do in one EQU many EQU ?

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Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 21 Jan 2019, 17:48

Code:

        regstr EQU EBP
        z1 EQU [regstr+4]
        z2 EQU [regstr+8]
        z3 EQU [regstr+12]
        zg EQU  mov eax,z1
        zz EQU  add eax,ebx
        zh EQU  mov z2,eax
        zk EQU  mov z3,eax

I want do:

Code:

apply EQU zg,zz,zh
;And write in some place of code
apply

How do this ?
I think about macro but apply EQU can be changed dynamically.
For example:

Code:

apply EQU zg,zz,zh
;And write in some place of code
apply
....
applyB EQU apply,zk
;And write in some place of code
applyB
....
apply EQU zg,zz,zz,zh,zg,zk
;And write in some place of code
apply

Its gives interesting practical things.

21 Jan 2019, 17:48

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 22 Jan 2019, 08:41

I'm not sure if I understood what you mean, but here is something that comes to my mind:

Code:

template.regstr EQU EBP
template.z1 EQU [template.regstr+4]
template.z2 EQU [template.regstr+8]
template.z3 EQU [template.regstr+12]
template.zg EQU  mov eax,template.z1
template.zz EQU  add eax,ebx
template.zh EQU  mov template.z2,eax
template.zk EQU  mov template.z3,eax

macro apply [v] {
       define  __applied v
       v equ template.#v
}

macro end.apply {
       irpv v,__applied \{
                restore v
                restore __applied
       \}
}


apply zg,zz,zh
        zz
end.apply

apply zk
        zk
end.apply

22 Jan 2019, 08:41

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 22 Jan 2019, 09:07

All ways i need do this in code ?
apply zg,zz,zh
zz
end.apply

Need in code write simple apply. And not allways write:
apply zg,zz,zh
zz
end.apply

Because more then 40 EQUs.
Some:
apply namenewmacro,zg,zz,zh
zz
end.apply
in code simple write namenewmacro.

Code:

;create new macro. Lets say macroPut
apply macroPut,zg,zz,zh
        zz
end.apply
;create macro Put2
apply Put2
    zg,zz,zz,zh      
end.apply
;And in code write
macroPut
Put2

22 Jan 2019, 09:07

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 22 Jan 2019, 09:44

Tomasz i try in code:

Code:

 
mydata dd 1,2,3,4,5
template.regstr EQU EBP
template.z1 EQU [template.regstr+4]
template.z2 EQU [template.regstr+8]
template.z3 EQU [template.regstr+12]
template.zg EQU  mov eax,template.z1
template.zz EQU  add eax,ebx
template.zh EQU  mov template.z2,eax
template.zk EQU  mov template.z3,eax

mov template.regstr,mydata ;mov ebp,mydata
apply zg,zh        
end.apply                       ;as I expected must change mydata dd 1,2,2,4,5

And after i print mydata. And get 1,2,3,4,5 but not 1,2,2,4,5

22 Jan 2019, 09:44

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 22 Jan 2019, 10:27

OK, then I most certainly misunderstood what you were trying to do. Can you explain it in more detail?

22 Jan 2019, 10:27

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 23 Jan 2019, 06:15

Tomasz Grysztar you write me:

Code:

template.regstr EQU EBP
template.z1 EQU [template.regstr+4]
template.z2 EQU [template.regstr+8]
template.z3 EQU [template.regstr+12]
template.zg EQU  mov eax,template.z1
template.zz EQU  add eax,ebx
template.zh EQU  mov template.z2,eax
template.zk EQU  mov template.z3,eax

macro apply [v] {
       define  __applied v
       v equ template.#v
}

macro end.apply {
       irpv v,__applied \{
                restore v
                restore __applied
       \}
}


apply zg,zz,zh
        zz
end.apply

apply zk
        zk
end.apply

My question. What must do macro apply and end.apply ?
How did its works ? And how right using this macro ?

I write in my code:

Code:

mov template.regstr,zyt
        apply regstr,zg,zh
        end.apply

Then i look in IDA Pro 7 asm code. And see only mov ebp,zyt
But not see code from macro apply.

23 Jan 2019, 06:15

Furs

Joined: 04 Mar 2016
Posts: 2565

Furs 23 Jan 2019, 21:36

Roman wrote:

I want do:

Code:

apply EQU zg,zz,zh
;And write in some place of code
apply

How do this ?
I think about macro but apply EQU can be changed dynamically.
For example:

Code:

apply EQU zg,zz,zh
;And write in some place of code
apply
....
applyB EQU apply,zk
;And write in some place of code
applyB
....
apply EQU zg,zz,zz,zh,zg,zk
;And write in some place of code
apply

Its gives interesting practical things.

Just purge the macro and re-define it:

Code:

macro apply
{
  zg
  zz
  zh
}
;And write in some place of code
apply
....
macro applyB
{
  apply
  zk
}
;And write in some place of code
applyB
....
purge apply
macro apply
{
  zg
  zz
  zz
  zh
  zg
  zk
}
;And write in some place of code
apply

23 Jan 2019, 21:36

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