mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 14:02:19 +00:00
102 lines
3.7 KiB
C#
102 lines
3.7 KiB
C#
using System;
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using System.Linq;
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using CPUx86 = Cosmos.IL2CPU.X86;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode( ILOpCode.Code.Ldflda )]
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public class Ldflda : ILOp
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{
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public Ldflda( Cosmos.IL2CPU.Assembler aAsmblr )
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: base( aAsmblr )
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{
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}
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public override void Execute( MethodInfo aMethod, ILOpCode aOpCode )
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{
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var xOpCode = (ILOpCodes.OpField)aOpCode;
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DoExecute(Assembler, aMethod, xOpCode.Value.DeclaringType, xOpCode.Value.GetFullName());
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}
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public static void DoExecute(Assembler Assembler, MethodInfo aMethod, Type aDeclaringType, string aField) {
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var xFields = GetFieldsInfo(aDeclaringType);
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var xFieldInfo = (from item in xFields
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where item.Id == aField
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select item).Single();
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int xExtraOffset = 0;
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var xType = aMethod.MethodBase.DeclaringType;
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bool xNeedsGC = aDeclaringType.IsClass && !aDeclaringType.IsValueType;
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if (xNeedsGC) {
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xExtraOffset = 12;
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}
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uint xOffset = 0;
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var xActualOffset = xFieldInfo.Offset + xExtraOffset;
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var xSize = xFieldInfo.Size;
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
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new CPUx86.Add { DestinationReg = CPUx86.Registers.EAX, SourceValue = (uint)(xActualOffset) };
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Assembler.Stack.Pop();
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Assembler.Stack.Push(new StackContents.Item(4, xType));
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#warning TODO: Implement Plugs
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//if( aDerefExternalAddress && aField.IsExternalField )
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//{
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX, DestinationIsIndirect = true };
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//}
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//else
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{
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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}
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}
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// using System;
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// using System.Collections.Generic;
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// using System.IO;
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//
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//
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// using CPUx86 = Cosmos.IL2CPU.X86;
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// using System.Reflection;
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// using Indy.IL2CPU.Compiler;
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//
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// namespace Indy.IL2CPU.IL.X86 {
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// [OpCode(OpCodeEnum.Ldflda)]
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// public class Ldflda: Op {
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// private Type mType;
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// private TypeInformation mTypeInfo;
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// private TypeInformation.Field mField;
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// private string mFieldId;
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// //public static void ScanOp(ILReader aReader, MethodInformation aMethodInfo, SortedList<string, object> aMethodData)
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// //{
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// // FieldInfo xField = aReader.OperandValueField;
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// // if (xField == null)
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// // {
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// // throw new Exception("Field not found!");
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// // }
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// // Engine.RegisterType(xField.DeclaringType);
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// // Engine.RegisterType(xField.FieldType);
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// //}
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//
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// public Ldflda(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo) {
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// FieldInfo xField = aReader.OperandValueField;
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// if (xField == null) {
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// throw new Exception("Field not found!");
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// }
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// mFieldId = xField.GetFullName();
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// mType = xField.DeclaringType;
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// }
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//
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// public override void DoAssemble() {
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// mTypeInfo = GetService<IMetaDataInfoService>().GetTypeInfo(mType);
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// mField = mTypeInfo.Fields[mFieldId];
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// Ldflda(Assembler, mTypeInfo, mField);
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// }
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// }
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// }
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}
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}
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