mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 22:12:25 +00:00
65 lines
No EOL
2.8 KiB
C#
65 lines
No EOL
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Indy.IL2CPU.Assembler;
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using CPU = Indy.IL2CPU.Assembler;
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using CPUx86 = Indy.IL2CPU.Assembler.X86;
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namespace Indy.IL2CPU.IL.X86 {
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[OpCode(OpCodeEnum.Box)]
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public class Box: Op {
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private uint mTheSize;
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private int mTypeId;
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public static void ScanOp(ILReader aReader, MethodInformation aMethodInfo, SortedList<string, object> aMethodData) {
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Type xTypeRef = aReader.OperandValueType as Type;
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if (xTypeRef == null)
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{
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throw new Exception("Couldn't determine Type!");
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}
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Engine.RegisterType(xTypeRef);
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Engine.QueueMethod(GCImplementationRefs.AllocNewObjectRef);
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}
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public Box(ILReader aReader, MethodInformation aMethodInfo)
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: base(aReader, aMethodInfo) {
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Type xTypeRef = aReader.OperandValueType as Type;
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if (xTypeRef == null) {
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throw new Exception("Couldn't determine Type!");
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}
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//if (xTypeRef is GenericParameter) {
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// // todo: implement support for generics
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// mTheSize = 4;
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//} else {
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mTheSize = Engine.GetFieldStorageSize(xTypeRef);
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//}
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//if (((mTheSize / 4) * 4) != mTheSize) {
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// throw new Exception("Incorrect Datasize. ( ((mTheSize / 4) * 4) === mTheSize should evaluate to true!");
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//}
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//if (!(xTypeRef is GenericParameter)) {
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mTypeId = Engine.RegisterType(xTypeRef);
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//}
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}
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public override void DoAssemble() {
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uint xSize = mTheSize;
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if (mTheSize % 4 != 0) {
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xSize += 4 - (mTheSize % 4);
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}
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new CPUx86.Push { DestinationValue = (ObjectImpl.FieldDataOffset + xSize) };
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new CPUx86.Call(CPU.Label.GenerateLabelName(GCImplementationRefs.AllocNewObjectRef));
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, DestinationIsIndirect = true, SourceValue = (uint)mTypeId, Size=32 };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, DestinationIsIndirect = true, DestinationDisplacement = 4, SourceValue = (uint)InstanceTypeEnum.BoxedValueType, Size=32 };
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new CPU.Comment("xSize is " + xSize);
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for (int i = 0; i < (xSize / 4); i++)
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{
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDX };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, DestinationIsIndirect = true, DestinationDisplacement = (ObjectImpl.FieldDataOffset + (i * 4)), SourceReg = CPUx86.Registers.EDX, Size=32 };
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}
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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Assembler.StackContents.Pop();
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Assembler.StackContents.Push(new StackContent(4, false, false, false));
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}
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}
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} |