mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 14:02:19 +00:00
100 lines
3.2 KiB
C#
100 lines
3.2 KiB
C#
using System;
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using Cosmos.IL2CPU.ILOpCodes;
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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.Ldloc)]
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public class Ldloc : ILOp
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{
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public Ldloc(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 xOpVar = (OpVar)aOpCode;
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var xVar = aMethod.MethodBase.GetMethodBody().LocalVariables[xOpVar.Value];
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var xStackCount = GetStackCountForLocal(aMethod, xVar);
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var xEBPOffset = (int)GetEBPOffsetForLocal(aMethod, xOpVar);
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var xSize = SizeOfType(xVar.LocalType);
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if (xStackCount > 1)
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{
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for (int i = 0; i < xStackCount; i++)
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{
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = (int)(xEBPOffset + (i * 4)) };
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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}
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}
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else
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{
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new CPUx86.Xor { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EAX };
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switch (xSize)
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{
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case 1:
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{
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new CPUx86.Move { DestinationReg = CPUx86.Registers.AL, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = xEBPOffset };
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break;
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}
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case 2:
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{
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new CPUx86.Move { DestinationReg = CPUx86.Registers.AX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = xEBPOffset };
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break;
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}
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case 4:
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{
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = xEBPOffset };
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break;
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}
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}
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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if(!xVar.LocalType.IsValueType)
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{
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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new CPUx86.Call { DestinationLabel =MethodAndTypeLabelsHolder.GC_IncRefLabel };
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}
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}
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Assembler.Stack.Push((int)xSize, xVar.LocalType);
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}
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// using System;
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// using System.IO;
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// using Cosmos.IL2CPU.X86;
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//
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//
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// using CPU = Cosmos.IL2CPU.X86;
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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.Ldloc)]
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// public class Ldloc: Op {
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// private MethodInformation.Variable mLocal;
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// protected void SetLocalIndex(int aIndex, MethodInformation aMethodInfo) {
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// mLocal = aMethodInfo.Locals[aIndex];
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// }
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// public Ldloc(MethodInformation aMethodInfo, int aIndex)
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// : base(null, aMethodInfo) {
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// SetLocalIndex(aIndex, aMethodInfo);
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// }
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//
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// public Ldloc(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo) {
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// SetLocalIndex(aReader.OperandValueInt32, 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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// Ldloc(Assembler, mLocal, GetService<IMetaDataInfoService>().SizeOfType(mLocal.VariableType));
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// }
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// }
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// }
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}
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}
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