public void AssertValueAtMemoryByDereferencingValueAtStackOffset(int offset, int value, int size)
{
int stackValue = _cpu.Memory.Get(_cpu.Registers[RIVM.Register.BP] + offset, false, 4);
int memoryValue = BitHelper.ExtractBytes(_cpu.Memory.Get(stackValue, false, size), size);
Assert.AreEqual(value, memoryValue);
}
public void AssertStackOffsetValue(int offset, int value, int size)
{
Assert.AreEqual(
value,
BitHelper.ExtractBytes(_cpu.Memory.Get(_cpu.Registers[RIVM.Register.BP] + offset, false, size), size)
);
}
protected override void ExecuteImpl(CPU cpu)
{
int val4 = cpu.Memory[cpu.Registers[_r2]];
int val = BitHelper.ExtractBytes(val4, _memoryAccessSize);
cpu.Registers[_r1] = val;
}
private void updateMemoryDisplay()
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("address", typeof(string)));
dt.Columns.Add(new DataColumn("value", typeof(string)));
dt.Columns.Add(new DataColumn("instruction", typeof(String)));
int start = _memoryDisplayStartAddress;
int end = start + 1000;
for (int address = start; address < end;)
{
if (_memoryDisplaySize == 4)
{
int machineCode = _vm.cpu.Memory.Get(address, false, 4);
object[] firstRowData = new object[3];
firstRowData[0] = address;
firstRowData[1] = machineCode;
address += 4;
Instruction instruction = InstructionDecoder.Decode(machineCode);
if (instruction.HasImmediate)
{
instruction.Immediate = _vm.cpu.Memory.Get(address, false, 4);
address += 4;
}
firstRowData[2] = instruction.ToString();
dt.Rows.Add(firstRowData);
if (instruction.HasImmediate)
{
dt.Rows.Add(address - 4, instruction.Immediate, "[immediate value]");
}
}
else
{
int value = BitHelper.ExtractBytes(_vm.cpu.Memory.Get(address, false, 1), 1);
dt.Rows.Add(address, value, "");
address++;
}
}
memoryGridView.Invoke((MethodInvoker)(() =>
{
memoryGridView.DataSource = dt;
}));
}
public void Extract(byte[] arr)
{
version = (byte)BitHelper.ExtractBits(arr, offset * 8, 4);
ihl = (byte)BitHelper.ExtractBits(arr, offset * 8 + 4, 4);
diffserv = BitHelper.Extract8(arr, offset + 1);
totalLen = BitHelper.Extract16(arr, offset + 2);
identification = BitHelper.Extract16(arr, offset + 4);
flags = (byte)BitHelper.ExtractBits(arr, offset + 48, 3);
fragOffset = BitHelper.ExtractBits(arr, offset + 51, 13);
ttl = BitHelper.Extract8(arr, offset + 8);
protocol = BitHelper.Extract8(arr, offset + 9);
hdrChecksum = BitHelper.Extract16(arr, offset + 10);
srcAddr = BitHelper.Extract32(arr, offset + 12);
dstAddr = BitHelper.Extract32(arr, offset + 16);
options = BitHelper.ExtractBytes(arr, offset + 20, length - 20);
}
protected override void ExecuteImpl(CPU cpu)
{
cpu.Registers[_r1] = BitHelper.ExtractBytes(cpu.Memory[cpu.Registers[_r2] + Immediate], _memoryAccessSize);
}
