public void ToBytesTest()
{
byte[] bytes;
EncodedInstruction.ModRMByte instance;
// The default Mod R/M byte is zero.
instance = new EncodedInstruction.ModRMByte();
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x00 }, bytes);
// The RM part. Note that bit 4 is put in the REX byte.
instance = new EncodedInstruction.ModRMByte(0xF, 0x0, 0x0);
Assert.AreEqual(0xF, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x07 }, bytes);
// The REG part. Note that bit 4 is put in the REX byte.
instance = new EncodedInstruction.ModRMByte(0x0, 0xF, 0x0);
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0xF, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x38 }, bytes);
// The MOD part.
instance = new EncodedInstruction.ModRMByte(0x0, 0x0, 0x3);
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x3, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0xC0 }, bytes);
// All parts together.
instance = new EncodedInstruction.ModRMByte(0x5, 0x5, 0x2);
Assert.AreEqual(0x5, instance.RM);
Assert.AreEqual(0x5, instance.Reg);
Assert.AreEqual(0x2, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0xAD }, bytes);
}
public void ToBytesTest()
{
byte[] bytes;
EncodedInstruction.ModRMByte instance;
// The default Mod R/M byte is zero.
instance = new EncodedInstruction.ModRMByte();
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x00 }, bytes);
// The RM part. Note that bit 4 is put in the REX byte.
instance = new EncodedInstruction.ModRMByte(0xF, 0x0, 0x0);
Assert.AreEqual(0xF, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x07 }, bytes);
// The REG part. Note that bit 4 is put in the REX byte.
instance = new EncodedInstruction.ModRMByte(0x0, 0xF, 0x0);
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0xF, instance.Reg);
Assert.AreEqual(0x0, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0x38 }, bytes);
// The MOD part.
instance = new EncodedInstruction.ModRMByte(0x0, 0x0, 0x3);
Assert.AreEqual(0x0, instance.RM);
Assert.AreEqual(0x0, instance.Reg);
Assert.AreEqual(0x3, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0xC0 }, bytes);
// All parts together.
instance = new EncodedInstruction.ModRMByte(0x5, 0x5, 0x2);
Assert.AreEqual(0x5, instance.RM);
Assert.AreEqual(0x5, instance.Reg);
Assert.AreEqual(0x2, instance.Mod);
bytes = instance.ToBytes();
Assert.AreEqual(new byte[] { 0xAD }, bytes);
}
