mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-30 04:40:14 +00:00
90 lines
No EOL
4.7 KiB
C#
90 lines
No EOL
4.7 KiB
C#
//using System;
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//using System.IO;
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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.Blt)]
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// public class Blt: Op {
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// public readonly string TargetLabel;
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// public readonly string CurInstructionLabel;
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// public readonly string NextInstructionLabel;
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// private string mNextLabel;
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// private string mCurLabel;
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// private uint mCurOffset;
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// private MethodInformation mMethodInformation;
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// public Blt(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo) {
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// TargetLabel = GetInstructionLabel(aReader.OperandValueBranchPosition);
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// CurInstructionLabel = GetInstructionLabel(aReader);
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// NextInstructionLabel = GetInstructionLabel(aReader.NextPosition);
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// mMethodInformation = aMethodInfo;
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// mCurOffset = aReader.Position;
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// mCurLabel = IL.Op.GetInstructionLabel(aReader);
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// mNextLabel = IL.Op.GetInstructionLabel(aReader.NextPosition);
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// }
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// public override void DoAssemble() {
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// if (Assembler.StackContents.Peek().IsFloat) {
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: Float support not yet implemented!", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
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// return;
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// }
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// var right = Assembler.StackContents.Pop();
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// var left = Assembler.StackContents.Pop();
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// if (right.Size != left.Size)
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// {
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// if (right.Size > 4 || left.Size > 4)
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// {
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: mixed size operations are not implemented! (" + left.Size + "/" + right.Size + ")", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
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// return;
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// }
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// }
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// int xSize = right.Size;
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// if (xSize > 8)
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// {
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: StackSize>8 not supported yet", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
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// return;
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// }
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// string BaseLabel = CurInstructionLabel + "__";
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// string LabelTrue = BaseLabel + "True";
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// string LabelFalse = BaseLabel + "False";
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// switch (xSize)
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// {
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// case 4:
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.ECX };
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// new CPUx86.Compare { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ESP, SourceIsIndirect = true };
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// new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.LessThan, DestinationLabel = LabelTrue };
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// new CPUx86.Jump { DestinationLabel = LabelFalse };
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// new CPU.Label(LabelTrue);
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
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// new CPUx86.Jump { DestinationLabel = TargetLabel };
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// new CPU.Label(LabelFalse);
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
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// break;
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// case 8:
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDX };
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// //value2: EDX:EAX
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
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// //value1: ECX:EBX
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// new CPUx86.Sub { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.EAX };
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// new CPUx86.SubWithCarry { DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.EDX };
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// //result = value1 - value2
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// new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.LessThan, DestinationLabel = TargetLabel };
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// break;
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// default:
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Blt: Comparison of " + xSize + "Not supported", mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
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// return;
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// }
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// }
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// }
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//} |