/// <summary>
/// Initializes a new <see cref="CodeOperand"/> struct.
/// </summary>
/// <param name="value">Value of the operand as a register.</param>
public CodeOperand(CodeRegister value)
{
this.type = CodeOperandType.Register;
this.register = value;
if (value == CodeRegister.AL || value == CodeRegister.AH || value == CodeRegister.BL || value == CodeRegister.BH || value == CodeRegister.CL || value == CodeRegister.CH || value == CodeRegister.DL || value == CodeRegister.DH)
{
this.operandSize = CodeOperandSize.Byte;
}
else if (value == CodeRegister.EAX || value == CodeRegister.EBX || value == CodeRegister.ECX || value == CodeRegister.EDX || value == CodeRegister.EBP || value == CodeRegister.ESI || value == CodeRegister.EDI || value == CodeRegister.ESP)
{
this.operandSize = CodeOperandSize.DoubleWord;
}
else
{
this.operandSize = CodeOperandSize.Word;
}
this.memoryBase = 0;
this.value = 0;
this.sibScale = 0;
this.sibIndex = 0;
this.sibBase = 0;
this.farSegment = 0;
}
/// <summary>
/// Initializes a new <see cref="CodeOperand"/> struct.
/// </summary>
/// <param name="type">Type of the operand.</param>
/// <param name="value">Value of the operand.</param>
public CodeOperand(CodeOperandType type, uint value, CodeOperandSize size)
{
this.type = type;
this.value = value;
this.operandSize = size;
this.memoryBase = 0;
this.register = 0;
this.sibScale = 0;
this.sibIndex = 0;
this.sibBase = 0;
this.farSegment = 0;
}
/// <summary>
/// Initializes a new <see cref="CodeOperand"/> struct.
/// </summary>
/// <param name="effectiveAddress">Addressing mode for the operand.</param>
/// <param name="value">Displacement value for the operand.</param>
public CodeOperand(CodeMemoryBase effectiveAddress, uint value, CodeOperandSize size)
{
this.type = CodeOperandType.MemoryAddress;
this.value = value;
this.memoryBase = effectiveAddress;
this.operandSize = size;
this.register = 0;
this.sibScale = 0;
this.sibIndex = 0;
this.sibBase = 0;
this.farSegment = 0;
}
private static string GetSizePrefix(CodeOperandSize size)
{
switch (size)
{
case CodeOperandSize.Byte:
return("byte ptr");
case CodeOperandSize.Word:
return("word ptr");
case CodeOperandSize.DoubleWord:
return("dword ptr");
default:
return(string.Empty);
}
}