Question

I’m stuck with this. I’m self studying assenbler and translating some basics instructions. But i can’t with this one.

Can anyone help me, please?

int
secuencia ( int n, EXPRESION * * o )
{
  int a, i;
  for ( i = 0; i < n; i++ ){

    a = evaluarExpresion( *o );

    // Im trying to do this: o++;
  __asm {
      mov eax,dword ptr [o] 
      mov ecx,dword ptr [eax] 
      inc [ecx]  
    }
  }
  return a ;
}

I wrote the inside for and works, but still don’t know how to increment O

int
secuencia ( int n, EXPRESION * * o )
{
  int a, i;
  for ( i = 0; i < n; i++ ){

      __asm {

            mov eax,dword ptr [o] 
            mov ecx,dword ptr [eax] 
        push ebp
            mov ebp, esp
            push ecx

            call evaluarExpresion
        mov esp, ebp

        pop ebp

        mov a, eax
      }

    o++;
  }
  return a ;
}

Answer 1

mov esi, o
add esi, 4 //increment is here

Line1 : We move your o pointer to the esi register.
Line2: We increment your o pointer

or

mov eax, o
mov esi, [eax]
add esi, 4

I don’t understand perfectly what you are trying to do but I hope it helped!