//-------End Setters------
//------- ELF code
//reads the ELF
/* Error codes:
* 0 = OK
* -1 = General
* -2 = File not found
* -3 = file to large
*/
public int readELF(string file, int memSize)
{
/* RAM.CLEAR();
* clearRegisters();
*///opens the log file to append
// StreamWriter log = new StreamWriter("log.txt", true);
Logger.Instance.writeLog("ELF: Reading ELF file");
int output = -1;
try
{
ELFReader e = new ELFReader();
byte[] elfArray = File.ReadAllBytes(file);
if (elfArray.Length <= Option.Instance.memSize)
{
//introspection!!!Woah!!!
e.ReadHeader(elfArray);
reg[15].WriteWord(0, e.elfHeader.e_entry);
writeElfToRam(e, elfArray);
string ramOutput = RAM.getAtAddress((uint)e.elfphs[0].p_vaddr, 8);
Logger.Instance.writeLog("File: Loaded");
Logger.Instance.writeLog(ramOutput);
//Console.WriteLine(ramOutput);
output = 0;
}
else //file to large
{
output = -3;
Logger.Instance.writeLog("Err: File to Large");
}
}
catch (System.IO.FileNotFoundException)
{
output = -2;
Logger.Instance.writeLog("Err: File not found");
if (Option.Instance.test)
{
throw new FileNotFoundException();
}
else
{
System.Environment.Exit(1);
}
}
catch //general exception
{
output = -1;
Logger.Instance.writeLog("Err: Something went wrong");
}
reg[13].WriteWord(0, 0x7000);
return(output);
}
public TestSimulator()
{
e = new ELFReader();
mem = new Memory(32768);
comp = new Computer();
reg = new Register[16];
resultHash = "";
hash = "";
}
//writes the ELF file to the RAM array
public void writeElfToRam(ELFReader e, byte[] elfArray)
{
for (int prog = 0; prog < e.elfHeader.e_phnum; prog++)
{
uint ramAddress = (uint)e.elfphs[prog].p_vaddr;
//Logger.Instance.writeLog("RAM: Writing to {0} ", ramAddress);
uint elfOffSet = (uint)e.elfphs[prog].p_offset;
//Logger.Instance.writeLog("ELF: Reading from {0}", e.elfphs[prog].p_offset);
//Logger.Instance.writeLog("ELF: Size of Segment {0}", e.elfphs[prog].p_filesz);
uint RamAddressCounter = ramAddress;
uint elfOffSetCounter = elfOffSet;
for (; elfOffSetCounter < elfArray.Length &&
RamAddressCounter < e.elfphs[prog].p_filesz + ramAddress;
RamAddressCounter++, elfOffSetCounter++)
{
RAM.WriteByte(RamAddressCounter, elfArray[elfOffSetCounter]);
} //for
} //for
} //writeElfToRam
