void ChangeRegisterValue()
{
cout << "\tEnter 'c' to skip this mode and continue \n";
while ( true )
{
string t1="",t2="";
cout << "Register (r0-r11) : ";
cin >> t1;
if (t1 == "c")
break ;
if (RG.Registers.find(t1) == RG.Registers.end())
{
cout << "\tError in register value . Not changing value . ";
}
else
{
cout << "New Contents (in Hex) : ";
cin >> t2;
if (CheckHex(t2) == false)
{
cout << "Error in value . Did not change .\n";
}
else
{
RG.value_of_register[RG.Registers[t1]] = HexToBin(t2);
}
}
}
}
uint32_t ParseFlags(std::string string)
{
if(CheckHex(string))
{
return HexToInt(string);
}
else
{
uint32_t flags = 0;
std::vector<std::string> v = Explode(string, "|");
for(std::vector<std::string>::iterator it = v.begin(); it != v.end(); ++it)
{
std::string par = ToLower(Trim((*it)));
if(!par.length()) continue;
uint32_t flag = 0;
bool erase = false;
if(par[0] == '-')
{
erase = true;
par.erase(0, 1);
}
if(par == "pvm")
flag = SVF_PVM;
else if(par == "muted")
flag = SVF_MUTED;
else if(par == "closed")
flag = SVF_CLOSED;
else if(par == "advanced_pvm")
flag = SVF_ADVPVM;
else if(par == "nohealing")
flag = SVF_NOHEALING;
else if(par == "noobsrv")
flag = SVF_NOOBSRV;
else if(par == "softcore")
flag = SVF_SOFTCORE;
else if(par == "nodrop")
flag = SVF_NODROP;
else if(par == "fnodrop")
flag = SVF_FNODROP;
if(!flag) continue;
if(!erase) flags |= flag;
else flags &= ~flag;
}
return flags;
}
}
bool SetBreakPoints()
{
string tmp ;
int in,c=0;
cout << "Enter -1 as address of break-point to quit from this mode\n";
while ( true )
{
cout << "bp"<<c++<<" : ";
cin >> tmp; // Hex Code
if (tmp == "-1")
break;
if (CheckHex(tmp) == false )
{
cout << "Invalid Hex value . Quitting . \n";
return false ;
}
breaks.insert(Value(HexToBin(tmp).c_str()));
}
return true ;
}
bool Scan_input(MemoryIO & Mem , ALU & ALU1 , RegisterFile & RG)
{
char codef[100];
FILE * filepointer;
bool flag = false;
do
{
cout << "\n\tPlease enter the program file : ";
cin >> codef;
filepointer = fopen(codef,"r");
if (errno)
{
perror("Invalid Entry : ");
}
else
flag = true;
errno = 0;
}
while (flag == false );
fclose(filepointer);
// Creating the label table
{
ifstream fin(codef);
string str1="" , str2="" , str3="";
int line = 0 , l = 0;
while (TRUE)
{
fin >> str1; // Always a new instruction
if (fin.eof()) // Code end
{
break;
}
if (str1=="brk")
{
breaks.insert(line);
continue;
}
l = str1.length();
if (str1[l-1]==':')
{
//Label Handle
if (labels.find(str1)!=labels.end())
{
cout << "Error : Redefinition of label : " <<str1<<"\n";
return false ;
}
if (CheckHex(str1) == true )
{
cout << "The labels cannot be valid Hexadecimal numbers. Please change the label " << str1<<"\n\n";
return false ;
}
// check if label is an instruction
if (ALU1.SelectBits.count(str1) != 0)
{
cout << "Error. Instruction defined as a label : "<<str1<<"\n";
return false;
}
labels.insert(str1);
label_lookup[str1] = line;
continue ;
}
if (str1[0]=='r' ) // Return Statement
{
line++;
continue;
}
if (inst_len[str1] == 4)
{
fin >> str2;// Register Value is scanned
line++;
}
if (inst_len[str1] == 8 )
{
line++;
}
if (str1[0]=='j' || (str1[0]=='c' && (str1[1]=='d' || str1[1]=='r'))) // Jump or Call instruction
{
line++;
if (str1[l-2]=='d' || str1[l-3]=='d') // only if a direct inst.
{
line++;
fin >> str2;
}
}