mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-20 04:48:53 +00:00
70 lines
2.8 KiB
C#
70 lines
2.8 KiB
C#
using System;
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using Cosmos.IL2CPU.ILOpCodes;
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using CPUx86 = Cosmos.Assembler.x86;
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using System.Collections.Generic;
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using System.Reflection;
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using Cosmos.Assembler;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Stloc)]
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public class Stloc : ILOp
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{
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public Stloc(Cosmos.Assembler.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 xField = aOpCode as ILOpCodes.OpVar;
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var xFieldInfo = aMethod.MethodBase.GetMethodBody().LocalVariables[xField.Value];
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var xEBPOffset = ((int)GetEBPOffsetForLocal(aMethod, xField.Value));
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new Comment("EBPOffset = " + xEBPOffset);
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for (int i = (int)GetStackCountForLocal(aMethod, xFieldInfo) - 1; i >= 0; i--)
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{
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
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new CPUx86.Mov { DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement =(int)((0 - (xEBPOffset + (i * 4)))), SourceReg = CPUx86.Registers.EAX };
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}
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}
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// private bool mNeedsGC = false;
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// private MethodInformation.Variable mLocal;
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// private string mBaseLabel;
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//
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// protected void SetLocalIndex(int aIndex, MethodInformation aMethodInfo) {
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// mLocal = aMethodInfo.Locals[aIndex];
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// mNeedsGC = aMethodInfo.Locals[aIndex].IsReferenceType;
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// mNeedsGC &= aMethodInfo.Locals[aIndex].VariableType.FullName != "System.String";
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// }
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//
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// public Stloc(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo) {
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// int xLocalIndex;
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// mBaseLabel = GetInstructionLabel(aReader);
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// xLocalIndex = aReader.OperandValueInt32;
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// SetLocalIndex(xLocalIndex, aMethodInfo);
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// //VariableDefinition xVarDef = aReader.Operand as VariableDefinition;
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// //if (xVarDef != null) {
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// // SetLocalIndex(xVarDef.Index, aMethodInfo);
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// //}
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// }
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//
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// public sealed override void DoAssemble() {
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// if (mNeedsGC) {
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = mLocal.VirtualAddresses[0] };
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// new CPUx86.Call { DestinationLabel = MethodInfoLabelGenerator.GenerateLabelName(GCImplementationRefs.DecRefCountRef) };
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// }
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// foreach (int i in mLocal.VirtualAddresses.Reverse()) {
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX }; ;
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = i, SourceReg = CPUx86.Registers.EAX };
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// }
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// // no need to inc again, items on the transient stack are also counted
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// Assembler.Stack.Pop();
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// }
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// }
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// }
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}
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}
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