using System;

namespace Cosmos.IL2CPU.X86.IL
{
	[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Blt)]
	public class Blt: ILOp
	{
		public Blt(ILOpCode aOpCode):base(aOpCode)
		{
		}

		#region Old code
		// using System;
		// using System.IO;
		// 
		// 
		// using CPU = Indy.IL2CPU.Assembler;
		// using CPUx86 = Indy.IL2CPU.Assembler.X86;
		// 
		// namespace Indy.IL2CPU.IL.X86 {
		// 	[OpCode(OpCodeEnum.Blt)]
		// 	public class Blt: Op {
		// 		public readonly string TargetLabel;
		// 		public readonly string CurInstructionLabel;
		// 		public readonly string NextInstructionLabel;
		//         private string mNextLabel;
		// 	    private string mCurLabel;
		// 	    private uint mCurOffset;
		// 	    private MethodInformation mMethodInformation;
		// 		public Blt(ILReader aReader, MethodInformation aMethodInfo)
		// 			: base(aReader, aMethodInfo) {
		// 			TargetLabel = GetInstructionLabel(aReader.OperandValueBranchPosition);
		// 			CurInstructionLabel = GetInstructionLabel(aReader);
		// 			NextInstructionLabel = GetInstructionLabel(aReader.NextPosition);
		//              mMethodInformation = aMethodInfo;
		// 		    mCurOffset = aReader.Position;
		// 		    mCurLabel = IL.Op.GetInstructionLabel(aReader);
		//             mNextLabel = IL.Op.GetInstructionLabel(aReader.NextPosition);
		// 		}
		// 		public override void DoAssemble() {
		// 			if (Assembler.StackContents.Peek().IsFloat) {
		//                 EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: Float support not yet implemented!", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
		//                 return;
		// 			}
		// 			var right = Assembler.StackContents.Pop();
		// 			var left = Assembler.StackContents.Pop();
		//             if (right.Size != left.Size)
		//             {
		//                 if (right.Size > 4 || left.Size > 4)
		//                 {
		//                     EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: mixed size operations are not implemented! (" + left.Size + "/" + right.Size + ")", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
		//                     return;                   
		//                 }
		//             }
		// 
		// 			int xSize = right.Size;
		// 
		//             if (xSize > 8)
		//             {
		//                 EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: StackSize>8 not supported yet", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
		//                 return;
		//             }
		// 
		// 			string BaseLabel = CurInstructionLabel + "__";
		// 			string LabelTrue = BaseLabel + "True";
		// 			string LabelFalse = BaseLabel + "False";
		// 
		//             switch (xSize)
		//             {
		//                 case 4:
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
		// 
		//                     new CPUx86.Push { DestinationReg = CPUx86.Registers.ECX };
		//                     new CPUx86.Compare { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ESP, SourceIsIndirect = true };
		//                     new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.LessThan, DestinationLabel = LabelTrue };
		//                     new CPUx86.Jump { DestinationLabel = LabelFalse };
		//                     new CPU.Label(LabelTrue);
		//                     new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
		//                     new CPUx86.Jump { DestinationLabel = TargetLabel };
		//                     new CPU.Label(LabelFalse);
		//                     new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
		//                     break;
		//                 case 8:
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDX };
		//                     //value2: EDX:EAX
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
		//                     new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
		//                     //value1: ECX:EBX
		//                     new CPUx86.Sub { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.EAX };
		//                     new CPUx86.SubWithCarry { DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.EDX };
		//                     //result = value1 - value2
		//                     new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.LessThan, DestinationLabel = TargetLabel };
		//                     break;
		//                 default:
		//                     EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: Comparison of " + xSize + "Not supported", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
		//                     return;
		//             }
		// 		}
		// 	}
		// }
		#endregion Old code
	}
}