public static Instruction FromReader(DisReader reader)
{
Instruction result = new Instruction();
result.Opcode = reader.ReadByte();
result.AddressingMode = reader.ReadByte();
int srcAddr = result.AddressingMode & AddrMode.SOURCE_MASK;
int destAddr = result.AddressingMode & AddrMode.DESTINATION_MASK;
int middleAddr = result.AddressingMode & AddrMode.MIDDLE_MASK;
if (middleAddr == AddrMode.MIDDLE_NONE)
{
result.Middle = result.Destination;
}
else
{
result.Middle = reader.ReadOP();
}
if ((srcAddr == AddrMode.SOURCE_MPDOUBLEINDIRECT) ||
(srcAddr == AddrMode.SOURCE_FPDOUBLEINDIRECT))
{
result.Source = (reader.ReadOP() << 16) | reader.ReadOP();
}
else if (srcAddr != AddrMode.SOURCE_NONE)
{
result.Source = reader.ReadOP();
}
if ((destAddr == AddrMode.DESTINATION_MPDOUBLEINDIRECT) ||
(destAddr == AddrMode.DESTINATION_FPDOUBLEINDIRECT))
{
result.Destination = (reader.ReadOP() << 16) | reader.ReadOP();
}
else if (destAddr != AddrMode.DESTINATION_NONE)
{
result.Destination = reader.ReadOP();
}
return(result);
}
public static DataDescriptor FromReader(DisReader reader)
{
DataDescriptor result = new DataDescriptor {
Code = 0
};
int code = reader.ReadByte();
if (code == 0)
{
return(result);
}
int count = code & 0x0f;
if (count == 0)
{
count = reader.ReadOP();
}
result.Code = (code & 0xf0) >> 4;
result.Count = count;
result.Offset = reader.ReadOP();
int dataSize = 0;
if (result.Code == INT8)
{
dataSize = 1;
}
else if (result.Code == INT32)
{
dataSize = 4;
}
else if (result.Code == FLOAT)
{
dataSize = 8;
}
else if (result.Code == STRING)
{
result.Data = Encoding.UTF8.GetBytes(reader.ReadString(count));
}
if (dataSize != 0 && count != 0)
{
result.Data = reader.ReadBytes(count * dataSize);
// big endian to little endian
result.Data = result.Data.Reverse().ToArray();
}
return(result);
}
