public void Load()
{
//COMPLIMENT OF J
//opens given filename and identifies key elements
string elfFilename = myOptions.GetFileName();
try
{
Debug.WriteLine("Loader.Load: Opening " + elfFilename + "...");
using (FileStream strm = new FileStream(elfFilename, FileMode.Open))
{
ELF elfHeader = new ELF();
byte[] data = new byte[Marshal.SizeOf(elfHeader)];
Debug.WriteLine("Loader.Load: Reading " + elfFilename + "...");
// Read ELF header data
strm.Read(data, 0, data.Length);
Debug.WriteLine("Loader.Load: Converting to struct");
// Convert to struct
elfHeader = ByteArrayToStructure <ELF>(data);
Debug.WriteLine("Loader.Load: Entry point: " + elfHeader.e_entry.ToString("X4"));
Debug.WriteLine("Loader.Load: Number of program header entries: " + elfHeader.e_phnum);
Debug.WriteLine("Loader.Load: Reading program header entries...");
// Read program header entries into programHeaders
strm.Seek(elfHeader.e_phoff, SeekOrigin.Begin);
for (int i = 0; i < elfHeader.e_phnum; i++)
{
data = new byte[elfHeader.e_phentsize];
strm.Read(data, 0, (int)elfHeader.e_phentsize);
programHeaders.Add(ByteArrayToStructure <ELFTWO>(data));
}
Debug.WriteLine("Loader.Load: Reading memory from program headers...");
//read memory from program header and send to
foreach (ELFTWO toRam in programHeaders)
{
data = new byte[toRam.p_memsz];
strm.Seek(toRam.p_offset, SeekOrigin.Begin);
strm.Read(data, 0, (int)toRam.p_memsz);
myRam.PopulateRam(data, toRam.p_vaddr);
}
Console.WriteLine(myRam.getMDF());
}
}
catch
{
Console.WriteLine("error loading file. please check your file/filename and try again");
Environment.Exit(1);
}
}
public static void RunTests()
{
Console.WriteLine("testing RAM...");
RAMsim ram = new RAMsim(7);
//test populate method
Console.Write("verifying Populate...");
ram.PopulateRam(new byte[] { 0xFF, 0xAA, 0xAA, 0xFF, 0xFF, 0xFF, 0xFF }, 0);
Debug.Assert(ram.ReadHalfWord(1) == 0xAAAA);
Console.WriteLine("success!");
//test set/test flag methods
Console.Write("verifying SetFlag/TestFlag...");
ram.SetFlag(1, 6, true);
Debug.Assert(ram.TestFlag(1, 6));
ram.SetFlag(1, 6, false);
Debug.Assert(!(ram.TestFlag(1, 6)));
Console.WriteLine("success!");
//test read/write methods
Console.Write("verifying Read/Write Word...");
ram.WriteWord(0, 0xFFFFFFFF);
Debug.Assert(ram.ReadWord(0) == 0xFFFFFFFF);
Console.WriteLine("success!");
Console.Write("verifying Read/Write HalfWord...");
ram.WriteWord(0, 0xCCCC);
Debug.Assert(ram.ReadWord(0) == 0xCCCC);
Console.WriteLine("success!");
Console.Write("verifying Read/Write Byte...");
ram.WriteWord(0, 0xAA);
Debug.Assert(ram.ReadWord(0) == 0xAA);
Console.WriteLine("success!");
}
