add user-defined function and variable type in script engine

[xmaple555]

Description

@SinaKarvandi please make script-engine branch to receive all PRs about script-engine. It requires a long time to develop script-engine more like C language.

This commit adds define function and variable type.
Variable type does nothing for now, I just add variable type syntax.
And if you are free, you can help me to add stack buffer for each logic core in hyperdbg/hprdbgkd/code/debugger/core/Debugger.c.

Void Function

HyperDbg> ? {
> void myfun(int var,int var2){
> printf("var = %d, var2 = %d\n",var,var2);
> return ;
> printf("222\n");
> }
> for(int i=0;i<3;i++){
> myfun(1,2);
> }
>
>
> int myvar=79;
> printf("%x\n",myvar);
> }
this command should not be used while you're in VMI-Mode or not in debugger-mode, the results that you see is a simulated result for TESTING script-engine and is not based on the status of your system. You can use this command, ONLY in debugger-mode

test expression : {
void myfun(int var,int var2){
printf("var = %d, var2 = %d\n",var,var2);
return ;
printf("222\n");
}
for(int i=0;i<3;i++){
myfun(1,2);
}


int myvar=79;
printf("%x\n",myvar);
}
var = 1, var2 = 2
var = 1, var2 = 2
var = 1, var2 = 2
79

Int Function

HyperDbg> ? {
> int myfun1(int var1){
> result = var1 + 1;
> printf("myfun1 %d\n",result);
> return result;
> }
> int myfun2(int var1){
> result = var1 * 2;
> printf("myfun2 %d\n",result);
> return result;
> }
> int myfun3(int var1){
> result = var1 * 2;
> printf("myfun3 %d\n",result);
> return result;
> }
> int myfun4(int var1){
> result = myfun1(var1)+myfun2(var1) + myfun3(var1);
> printf("myfun4 %d\n",result);
> return result;
> }
>
> printf("%d\n",myfun4(2));
> }
this command should not be used while you're in VMI-Mode or not in debugger-mode, the results that you see is a simulated result for TESTING script-engine and is not based on the status of your system. You can use this command, ONLY in debugger-mode

test expression : {
int myfun1(int var1){
result = var1 + 1;
printf("myfun1 %d\n",result);
return result;
}
int myfun2(int var1){
result = var1 * 2;
printf("myfun2 %d\n",result);
return result;
}
int myfun3(int var1){
result = var1 * 2;
printf("myfun3 %d\n",result);
return result;
}
int myfun4(int var1){
result = myfun1(var1)+myfun2(var1) + myfun3(var1);
printf("myfun4 %d\n",result);
return result;
}

printf("%d\n",myfun4(2));
}
myfun1 3
myfun2 4
myfun3 4
myfun4 11
11

Recursive Fibonacci

HyperDbg> ? {
> int myfun(int var1) {
> if(var1 == 0) {
> return 0;
> }
> if(var1 == 1) {
> return 1 ;
> }
> return myfun(var1 - 1)  + myfun(var1 -2);
>
> }
> var = myfun(9);
> printf("%d",var);
> }
this command should not be used while you're in VMI-Mode or not in debugger-mode, the results that you see is a simulated result for TESTING script-engine and is not based on the status of your system. You can use this command, ONLY in debugger-mode

test expression : {
int myfun(int var1) {
if(var1 == 0) {
return 0;
}
if(var1 == 1) {
return 1 ;
}
return myfun(var1 - 1)  + myfun(var1 -2);

}
var = myfun(9);
printf("%d",var);
}
34

Iterative Fibonacci

HyperDbg> ? {
>
> int myfun(int varn) {
>   int varf0 = 0;
>   int varf1 = 1;
>   int varfn=0;  //comment
>
>   if(varn == 0) {
>     return varf0;
>   }
>   if(varn == 1) {
>     return varf1;
>   }
>
>   int i=0;
>   for(i = 2; i <= varn; i++) {
>     varfn = varf0 + varf1;
>     varf0 = varf1;
>     varf1 = varfn;
>   }
>
>   return varfn;
> }
> printf("%d",myfun(9));
> }
this command should not be used while you're in VMI-Mode or not in debugger-mode, the results that you see is a simulated result for TESTING script-engine and is not based on the status of your system. You can use this command, ONLY in debugger-mode

test expression : {

int myfun(int varn) {
  int varf0 = 0;
  int varf1 = 1;
  int varfn=0;  //comment

  if(varn == 0) {
    return varf0;
  }
  if(varn == 1) {
    return varf1;
  }

  int i=0;
  for(i = 2; i <= varn; i++) {
    varfn = varf0 + varf1;
    varf0 = varf1;
    varf1 = varfn;
  }

  return varfn;
}
printf("%d",myfun(9));
}
34

[SinaKarvandi]

Hi,
Thanks a lot for implementing it, it's a huge contribution.

The branch is created:
https://github.com/HyperDbg/HyperDbg/tree/script-engine

FYI, right now, I'm fixing all warnings in the code that are available at this branch:
https://github.com/HyperDbg/HyperDbg/tree/fix-warnings

My big plan is to make HyperDbg OS-independent so we can release a Linux version. (I estimate that it take one year or more as it's complicated).

And if you are free, you can help me to add stack buffer for each logic core in hyperdbg/hprdbgkd/code/debugger/core/Debugger.c.

Yes, please let me know, how I can help with that.