mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-20 12:58:39 +00:00
42 lines
1.5 KiB
C#
42 lines
1.5 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 CPU = Cosmos.Assembler.x86;
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using Cosmos.Assembler;
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using Cosmos.IL2CPU.Plugs.System;
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using XSharp.Compiler;
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using static XSharp.Compiler.XSRegisters;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Box)]
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public class Box : ILOp
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{
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public Box(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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OpType xType = (OpType)aOpCode;
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uint xSize = Align(SizeOfType(xType.Value), 4);
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string xTypeID = GetTypeIDLabel(xType.Value);
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XS.Push((ObjectImpl.FieldDataOffset + xSize));
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XS.Call(LabelName.Get(GCImplementationRefs.AllocNewObjectRef));
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XS.Pop(OldToNewRegister(CPUx86.RegistersEnum.EAX));
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XS.Set(ESI, EAX, sourceIsIndirect: true);
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XS.Set(EBX, xTypeID, sourceIsIndirect: true);
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XS.Set(ESI, EBX, destinationIsIndirect: true);
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XS.Set(ESI, (uint)InstanceTypeEnum.BoxedValueType, destinationDisplacement: 4, size: RegisterSize.Int32);
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new Comment(Assembler, "xSize is " + xSize);
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for (int i = 0; i < (xSize / 4); i++)
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{
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XS.Pop(OldToNewRegister(CPUx86.RegistersEnum.EDX));
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.ESI, DestinationIsIndirect = true, DestinationDisplacement = (ObjectImpl.FieldDataOffset + (i * 4)), SourceReg = CPUx86.RegistersEnum.EDX, Size = 32 };
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}
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XS.Push(OldToNewRegister(CPUx86.RegistersEnum.EAX));
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}
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}
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}
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