/// <summary>
/// Constructs the representation of this instruction variant using the specified operands.
/// </summary>
/// <param name="context">The <see cref="Context"/> used.</param>
/// <param name="operands">The <see cref="Operand"/> objects to encode.</param>
/// <param name="lockPrefix">Whether to use a lock prefix.</param>
/// <returns>The encoded instruction.</returns>
public EncodedInstruction Construct(Context context, IEnumerable <IConstructableOperand> operands, bool lockPrefix)
{
#region Contract
Contract.Requires <ArgumentNullException>(context != null);
Contract.Requires <ArgumentNullException>(operands != null);
Contract.Ensures(Contract.Result <EncodedInstruction>() != null);
#endregion
EncodedInstruction instr = new EncodedInstruction();
// Set the lock prefix.
instr.SetLock(lockPrefix);
// Set the opcode.
instr.Opcode = opcode;
// Set the fixed REG value, if any.
instr.FixedReg = fixedReg;
int i = 0;
foreach (var operand in operands)
{
if (operand == null)
{
// No operand. Nothing to do.
continue;
}
if (i >= descriptors.Length)
{
// No descriptors left. Nothing to be done.
break;
}
operand.Adjust(descriptors[i]);
operand.Construct(context, instr);
i++;
}
// When the operand size has been explicitly set, set it on the encoded instruction.
if (operandSize != DataSize.None)
{
instr.SetOperandSize(context.Representation.Architecture.OperandSize, operandSize);
}
// We are done.
return(instr);
}
/// <summary>
/// Constructs the representation of this instruction variant using the specified operands.
/// </summary>
/// <param name="context">The <see cref="Context"/> used.</param>
/// <param name="operands">The <see cref="Operand"/> objects to encode.</param>
/// <param name="lockPrefix">Whether to use a lock prefix.</param>
/// <returns>The encoded instruction.</returns>
public EncodedInstruction Construct(Context context, IEnumerable <Operand> operands, bool lockPrefix)
{
var instr = new EncodedInstruction(opcodeBytes, FixedReg, lockPrefix);
int i = 0;
foreach (var operand in operands)
{
if (operand == null)
{
// No operand. Nothing to do.
continue;
}
if (i >= Descriptors.Count)
{
// No descriptors left. Nothing to be done.
break;
}
operand.Adjust(Descriptors[i]);
operand.Construct(context, instr);
i++;
}
// When the operand size has been explicitly set, set it on the encoded instruction.
if (OperandSize != DataSize.None)
{
instr.SetOperandSize(context.AddressingMode, OperandSize);
}
if (NoRexPrefix)
{
// SetOperandSize() will cause the instruction to encode a REX prefix, which is not required in
// this particular case. So reset it back to null to encode no REX prefix.
instr.Use64BitOperands = null;
}
// We are done.
return(instr);
}