mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 14:02:19 +00:00
65 lines
3.4 KiB
C#
65 lines
3.4 KiB
C#
using System;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Shr)]
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public class Shr: ILOpX86
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{
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public Shr(ILOpCode aOpCode):base(aOpCode)
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{
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}
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#region Old code
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// using System;
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// using CPU = Indy.IL2CPU.Assembler;
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// using CPUx86 = Indy.IL2CPU.Assembler.X86;
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//
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// namespace Indy.IL2CPU.IL.X86 {
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// // todo: Improve 8byte support
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// [OpCode(OpCodeEnum.Shr)]
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// public class Shr: Op {
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// private string mLabelName;
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// public Shr(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo) {
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// mLabelName= GetInstructionLabel(aReader);
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// }
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// public override void DoAssemble() {
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// var xStackItem_ShiftAmount = Assembler.StackContents.Pop();
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// var xStackItem_Value = Assembler.StackContents.Pop();
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// if (xStackItem_Value.IsFloat) { throw new NotImplementedException("Floats not yet supported!"); }
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// if (xStackItem_Value.Size <= 4)
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// {
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// new CPUx86.Pop{DestinationReg = CPUx86.Registers.EAX}; // shift amount
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX }; // value
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.CL, SourceReg = CPUx86.Registers.AL };
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// new CPUx86.ShiftRight { DestinationReg = CPUx86.Registers.EBX, SourceReg=CPUx86.Registers.CL };
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.EBX };
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// Assembler.StackContents.Push(xStackItem_Value);
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// return;
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// }
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// if (xStackItem_Value.Size <= 8) {
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDX };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, SourceValue=0 };
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// new CPU.Label(mLabelName + "__StartLoop");
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// new CPUx86.Compare { DestinationReg = CPUx86.Registers.EDX, SourceReg=CPUx86.Registers.EAX};
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// new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = mLabelName + "__EndLoop" };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.ESP, SourceIsIndirect=true };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.CL, SourceValue = 1 };
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// new CPUx86.ShiftRight { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.CL };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect=true, SourceReg = CPUx86.Registers.EBX };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.CL, SourceValue = 1 };
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// new CPUx86.RotateThroughCarryRight { DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = 4, Size = 32, SourceReg=CPUx86.Registers.CL };
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.EAX, SourceValue = 1 };
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// new CPUx86.Jump { DestinationLabel = mLabelName + "__StartLoop" };
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//
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// new CPU.Label(mLabelName + "__EndLoop");
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// Assembler.StackContents.Push(xStackItem_Value);
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// return;
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// }
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// throw new NotImplementedException();
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// }
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// }
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// }
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#endregion Old code
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}
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}
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