Cosmos/source/Compiler/Indy.IL2CPU.X86/IL/x86/Ldarga.cs

using System;
using System.Linq;


using CPU = Indy.IL2CPU.Assembler.X86;
using Indy.IL2CPU.Assembler;

namespace Indy.IL2CPU.IL.X86 {
	[OpCode(OpCodeEnum.Ldarga)]
	public class Ldarga: Op {
		private int mAddress;
        private string mNextLabel;
	    private string mCurLabel;
	    private uint mCurOffset;
	    private MethodInformation mMethodInformation;
		protected void SetArgIndex(int aIndex, MethodInformation aMethodInfo) {
			mAddress = aMethodInfo.Arguments[aIndex].VirtualAddresses.First();
		}
        public Ldarga(MethodInformation aMethodInfo, int aIndex, string aCurrentLabel, uint aCurrentOffset, string aNextLabel)
			: base(null, aMethodInfo) {
			SetArgIndex(aIndex, aMethodInfo);

            mMethodInformation = aMethodInfo;
		    mCurOffset = aCurrentOffset;
		    mCurLabel = aCurrentLabel;
            mNextLabel = aNextLabel;
		}

		public Ldarga(ILReader aReader, MethodInformation aMethodInfo)
			: base(aReader, aMethodInfo) {
			if (aReader != null) {
				SetArgIndex(aReader.OperandValueInt32, aMethodInfo);
				//ParameterDefinition xParam = aReader.Operand as ParameterDefinition;
				//if (xParam != null) {
				//    SetArgIndex(xParam.Sequence - 1, aMethodInfo);
				//}
			}
            mMethodInformation = aMethodInfo;
		    mCurOffset = aReader.Position;
		    mCurLabel = IL.Op.GetInstructionLabel(aReader);
            mNextLabel = IL.Op.GetInstructionLabel(aReader.NextPosition);
		}
		public override void DoAssemble() {
            new CPU.Push { DestinationReg = CPU.Registers.EBP };
			Assembler.StackContents.Push(new StackContent(4, typeof(uint)));
            new CPU.Push { DestinationValue = (uint)mAddress };
			Assembler.StackContents.Push(new StackContent(4, typeof(uint)));
			Add(Assembler, GetServiceProvider(), mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
		}
	}
}