/// <summary>
/// Computes the opcode.
/// </summary>
/// <param name="destination">The destination operand.</param>
/// <param name="source">The source operand.</param>
/// <param name="third">The third operand.</param>
/// <returns></returns>
protected override OpCode ComputeOpCode(Operand destination, Operand source, Operand third)
{
if (destination.IsRegister) return R_RM;
if (destination.IsMemoryAddress) return RM_R;
throw new ArgumentException(@"No opcode for operand type. [" + destination.GetType() + ", " + source.GetType() + ")");
}
/// <summary>
/// Computes the opcode.
/// </summary>
/// <param name="destination">The destination operand.</param>
/// <param name="source">The source operand.</param>
/// <param name="third">The third operand.</param>
/// <returns></returns>
protected override OpCode ComputeOpCode(Operand destination, Operand source, Operand third)
{
if (!(destination.IsRegister))
throw new ArgumentException(@"Destination must be RegisterOperand.", @"destination");
if (source.IsConstant)
throw new ArgumentException(@"Source must not be ConstantOperand.", @"source");
if (source.IsByte || source.IsBoolean)
{
if (destination.IsRegister && source.IsRegister) return R_X8;
if (destination.IsRegister && source.IsMemoryAddress) return R_X8;
}
if (source.IsShort || source.IsChar)
{
if (destination.IsRegister && source.IsRegister) return R_X16;
if (destination.IsRegister && source.IsMemoryAddress) return R_X16;
}
throw new ArgumentException(@"No opcode for operand type. [" + destination.GetType() + ", " + source.GetType() + ")");
}
/// <summary>
/// Computes the opcode.
/// </summary>
/// <param name="destination">The destination operand.</param>
/// <param name="source">The source operand.</param>
/// <param name="third">The third operand.</param>
/// <returns></returns>
protected override OpCode ComputeOpCode(Operand destination, Operand source, Operand third)
{
if (!(destination.IsRegister))
throw new ArgumentException(@"Destination must be RegisterOperand.", @"destination");
if (source.IsConstant)
throw new ArgumentException(@"Source must not be ConstantOperand.", @"source");
switch (source.Type.Type)
{
case CilElementType.Boolean: goto case CilElementType.I1;
case CilElementType.U1: goto case CilElementType.I1;
case CilElementType.I1:
{
if ((destination.IsRegister) && (source.IsRegister)) return R_X8;
if ((destination.IsRegister) && (source.IsMemoryAddress)) return R_X8;
}
break;
case CilElementType.Char: goto case CilElementType.U2;
case CilElementType.U2: goto case CilElementType.I2;
case CilElementType.I2:
if ((destination.IsRegister) && (source.IsRegister)) return R_X16;
if ((destination.IsRegister) && (source.IsMemoryAddress)) return R_X16;
break;
default:
break;
}
throw new ArgumentException(@"No opcode for operand type. [" + destination.GetType() + ", " + source.GetType() + ")");
}
/// <summary>
/// Computes the opcode.
/// </summary>
/// <param name="destination">The destination operand.</param>
/// <param name="source">The source operand.</param>
/// <param name="third">The third operand.</param>
/// <returns></returns>
protected override OpCode ComputeOpCode(Operand destination, Operand source, Operand third)
{
if ((destination.IsCPURegister) && (source.IsCPURegister)) return R;
throw new ArgumentException(@"No opcode for operand type. [" + destination.GetType() + ", " + source.GetType() + ")");
}
