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debug.cpp
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debug.cpp
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#include "headers.h"
#include "methods.h"
#include <algorithm>
void execDebug(elements *e)
{
// cout<<"***INEXEC**\n";
string inst="";
int p;
//map<string, string>::iterator it;
//e->pc = e->start;
inst = e->memory[e->pc ];
string cmd;
stringstream ss(inst);
ss >> inst;
// p = (it->second).find(' ');
// for(int i=0;i<p;i++)
// inst += (it->second)[i];
// //cout<<inst<<"111"<<endl;
if(inst == "MOV")
mov(e);
else if(inst == "XCHG")
xchg(e);
else if(inst == "ADD")
addSub(e);
else if(inst == "SUB")
addSub(e);
else if(inst == "INR")
inrDcr(e);
else if(inst == "DCR")
inrDcr(e);
else if(inst == "INX")
inxDcx(e);
else if(inst == "DCX")
inxDcx(e);
else if(inst == "DAD")
dad(e);
else if(inst == "CMA")
cma(e);
else if(inst == "CMP")
cmp(e);
else if(inst == "MVI")
mvi(e);
else if(inst == "LXI")
lxi(e);
else if(inst == "ADI")
adiSui(e);
else if(inst == "SUI")
adiSui(e);
else if(inst == "JMP")
jmp(e);
else if(inst == "JC")
jc(e);
else if(inst == "JNC")
jnc(e);
else if(inst == "JZ")
jz(e);
else if(inst == "JNZ")
jnz(e);
else if(inst == "LDA")
lda(e);
else if(inst == "STA")
sta(e);
else if(inst == "LHLD")
lhld(e);
else if(inst == "SHLD")
shld(e);
else if(inst == "SET")
sett(e);
else if(inst == "HLT")
return;
updatePc(e);
//cout<<"***OUTEXEC**\n";
}
int debug(elements *e)
{
e->pc = e->start;
cout<<"DEBUGGER MODE ON :\ntype \"help\" for help\n\n";
map<int, int > breakPt;
int line=0,end=0;
// cin.ignore();
int i;
while(i < 10)
{
// cin.ignore();
i++;
string input,cmd;
int lineNo;
cout<<"debug:";
fflush(stdin);
getline(cin,input);
transform(input.begin(), input.end(), input.begin(), ::toupper);
//2cout<<input<<"***inp****\n";
stringstream inputstream(input);
//getline(inputstream,cmd);
inputstream >> cmd;
cout << cmd<<endl;
//cout<<cmd<<"****";
if(cmd == "B" ||cmd == "b")
{
//string lno;
//getline(inputstream, lno);
int lineNo;
inputstream >> lineNo;
//cout<<lineNo <<"***lineNo****\n";
breakPt[lineNo]=1;
}
else if(cmd == "R"||cmd == "r")
{
while(end==0 && breakPt.find(line) == breakPt.end() )
{
cout<<e->memory[e->pc ]<<endl;
if(e->memory[e->pc ]=="HLT"){
line++;
end=1;
break;
}
execDebug(e);
line++;
}
}
else if(cmd == "S"||cmd == "s")
{
// cout<<"***IN S**\n";
if(end == 0)
{
cout<<e->memory[e->pc ]<<endl;
if(e->memory[e->pc ] == "HLT")
{
end=1;
//cout<<"HLT\n";
}
execDebug(e);
line++;
}
else
cout<<"THATS ALL FOLKS\n";
}
else if(cmd == "P"||cmd == "p")
{
string arg;
//getline(inputstream, arg);
inputstream.ignore() ;
inputstream >>arg;
//cout<<arg<<"***pArg****\n";
if(arg[0] == 'A'||arg[0] == 'B'||arg[0] == 'C'||arg[0] == 'D'||arg[0] == 'E'||arg[0] == 'H'||arg[0] == 'L')
{
cout<<"register "<<arg[0]<<":"<<e->registers[arg[0]-'A']<<endl;
}
else if(arg[0]== 'x'||arg[0]== 'X')
{
arg = arg.substr(1);
cout<<"memory "<<arg<<":"<<e->memory[arg]<<endl;
}
}
else if(cmd == "Q"||cmd == "q")
{
return 0;
}
else if(cmd == "HELP"||cmd == "help")
{
cout<<"1. break or b `line no`:- It will set break point on given line number.\n2. run or r :- Run the program until it ends or breakpoint is encountered.\n3. step or s :- It will run the program one instruction at a time.\n4. print or p:- It prints the value of register or memory location. for ex p A will print the value ofregister A. p x2500 will print the value at memory location x2500 if any.\n5. quit or q:- quits the debugger.\n6. help:- will show all the commands of debugger."<<endl;
}
else
cout<<"*invalid*\n";
}
return 0;
}