Cosmos/Users/Gero Landmann/Cosmos.Assembler.X86.Gero/Extensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Cosmos.Assembler.X86
{
    public static class InfraExtensions
    {
        //public static string GetSourceAsString( this IInstructionData aThis )
        //{
        //    string xDest = "";
        //    if( ( aThis.SourceValue.HasValue || aThis.SourceRef != null ) &&
        //        aThis.SourceIsIndirect &&
        //        aThis.SourceReg != null )
        //    {
        //        throw new Exception( "[Scale*index+base] style addressing not supported at the moment" );
        //    }
        //    if( aThis.SourceRef != null )
        //    {
        //        xDest = aThis.SourceRef.ToString();
        //    }
        //    else
        //    {
        //        if( aThis.SourceReg != null )
        //        {
        //            xDest = Registers.GetRegisterName( aThis.SourceReg.Value );
        //        }
        //        else
        //        {
        //            xDest = "0x" + aThis.SourceValue.GetValueOrDefault().ToString( "X" ).ToUpperInvariant();
        //        }
        //    }
        //    if( aThis.SourceDisplacement != 0 )
        //    {
        //        xDest += " + " + aThis.SourceDisplacement;
        //    }
        //    if( aThis.SourceIsIndirect )
        //    {
        //        return "[" + xDest + "]";
        //    }
        //    else
        //    {
        //        return xDest;
        //    }
        //}

        //public static string GetDestinationAsString( this IInstructionData aThis )
        //{
        //    string xDest = "";
        //    if( ( aThis.DestinationValue.HasValue || aThis.DestinationRef != null ) &&
        //        aThis.DestinationIsIndirect &&
        //        aThis.DestinationReg != null )
        //    {
        //        throw new Exception( "[Scale*index+base] style addressing not supported at the moment" );
        //    }
        //    if( aThis.DestinationRef != null )
        //    {
        //        xDest = aThis.DestinationRef.ToString();
        //    }
        //    else
        //    {
        //        if( aThis.DestinationReg != null )
        //        {
        //            xDest = Registers.GetRegisterName( aThis.DestinationReg.Value );
        //        }
        //        else
        //        {
        //            xDest = "0x" + aThis.DestinationValue.GetValueOrDefault().ToString( "X" ).ToUpperInvariant();
        //        }
        //    }
        //    if( aThis.DestinationDisplacement != 0 )
        //    {
        //        if( aThis.DestinationDisplacement > 255 )
        //        {
        //            xDest += " + 0x" + aThis.DestinationDisplacement.ToString( "X" );
        //        }
        //        else
        //        {
        //            xDest += " + " + aThis.DestinationDisplacement;
        //        }
        //    }
        //    if( aThis.DestinationIsIndirect )
        //    {
        //        return String.Intern( "[" + xDest + "]" );
        //    }
        //    else
        //    {
        //        return String.Intern( xDest );
        //    }
        //}

        //public static void DetermineSize( this IInstructionData aThis, IInstructionData aThis2, byte aSize )
        //{
        //    if( aSize == 0 )
        //    {
        //        if( aThis.DestinationReg != null && !aThis.DestinationIsIndirect )
        //        {
        //            if( Registers.Is16Bit( aThis.DestinationReg.Value ) )
        //            {
        //                aThis2.Size = ( InstructionSize )16;
        //            }
        //            else
        //            {
        //                if( Registers.Is32Bit( aThis.DestinationReg.Value ) )
        //                {
        //                    aThis2.Size = ( InstructionSize )32;
        //                }
        //                else
        //                {
        //                    aThis2.Size = ( InstructionSize )8;
        //                }
        //            }
        //            return;
        //        }
        //        if( aThis.DestinationRef != null && !aThis.DestinationIsIndirect )
        //        {
        //            aThis2.Size = ( InstructionSize )32;
        //            return;
        //        }
        //    }
        //}

        public static string GetMnemonic( this ConditionalTestEnum aThis )
        {
            switch( aThis )
            {
                case ConditionalTestEnum.Overflow:
                    return "o";
                case ConditionalTestEnum.NoOverflow:
                    return "no";
                case ConditionalTestEnum.Below:
                    return "b";
                case ConditionalTestEnum.NotBelow:
                    return "nb";
                case ConditionalTestEnum.Equal:
                    return "e";
                case ConditionalTestEnum.NotEqual:
                    return "ne";
                case ConditionalTestEnum.BelowOrEqual:
                    return "be";
                case ConditionalTestEnum.NotBelowOrEqual:
                    return "nbe";
                case ConditionalTestEnum.Sign:
                    return "s";
                case ConditionalTestEnum.NotSign:
                    return "ns";
                case ConditionalTestEnum.Parity:
                    return "p";
                case ConditionalTestEnum.NotParity:
                    return "np";
                case ConditionalTestEnum.LessThan:
                    return "l";
                case ConditionalTestEnum.NotLessThan:
                    return "nl";
                case ConditionalTestEnum.LessThanOrEqualTo:
                    return "le";
                case ConditionalTestEnum.NotLessThanOrEqualTo:
                    return "nle";
                default: throw new NotImplementedException();
            }
        }
    }
}