mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 22:12:25 +00:00
197 lines
10 KiB
C#
197 lines
10 KiB
C#
using System;
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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.Assembler.x86;
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using Cosmos.Assembler.x86.SSE;
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using Cosmos.Assembler.x86.x87;
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using XSharp.Compiler;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode( ILOpCode.Code.Cgt_Un )]
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public class Cgt_Un : ILOp
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{
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public Cgt_Un( 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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var xStackItem = aOpCode.StackPopTypes[0];
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var xStackItemSize = SizeOfType(xStackItem);
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var xStackItemIsFloat = TypeIsFloat(xStackItem);
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if( xStackItemSize > 8 )
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{
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//EmitNotImplementedException( Assembler, GetServiceProvider(), "Cgt_Un: StackSizes>8 not supported", CurInstructionLabel, mMethodInfo, mCurrentOffset, NextInstructionLabel );
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throw new NotImplementedException("Cosmos.IL2CPU.x86->IL->Cgt_Un.cs->Error: StackSizes > 8 not supported");
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}
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string BaseLabel = GetLabel( aMethod, aOpCode ) + ".";
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string LabelTrue = BaseLabel + "True";
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string LabelFalse = BaseLabel + "False";
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if( xStackItemSize > 4 )
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{
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XS.Set(XSRegisters.OldToNewRegister(RegistersEnum.ESI), 1);
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// esi = 1
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XS.Xor(XSRegisters.OldToNewRegister(RegistersEnum.EDI), XSRegisters.OldToNewRegister(RegistersEnum.EDI));
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// edi = 0
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if (xStackItemIsFloat)
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{
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// value 1
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new FloatLoad { DestinationReg = RegistersEnum.ESP, Size = 64, DestinationDisplacement = 8, DestinationIsIndirect = true };
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// value 2
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new FloatLoad { DestinationReg = RegistersEnum.ESP, Size = 64, DestinationIsIndirect = true };
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XS.FPU.FloatCompareAndSet(XSRegisters.ST1);
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// if carry is set, ST(0) < ST(i)
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new ConditionalMove { Condition = ConditionalTestEnum.Below, DestinationReg = RegistersEnum.EDI, SourceReg = RegistersEnum.ESI };
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// pops fpu stack
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XS.FPU.FloatStoreAndPop(XSRegisters.ST0);
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XS.FPU.FloatStoreAndPop(XSRegisters.ST0);
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XS.Add(XSRegisters.OldToNewRegister(RegistersEnum.ESP), 16);
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}
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else
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{
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XS.Pop(XSRegisters.OldToNewRegister(RegistersEnum.EAX));
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XS.Pop(XSRegisters.OldToNewRegister(RegistersEnum.EDX));
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//value2: EDX:EAX
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XS.Pop(XSRegisters.OldToNewRegister(RegistersEnum.EBX));
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XS.Pop(XSRegisters.OldToNewRegister(RegistersEnum.ECX));
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//value1: ECX:EBX
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XS.Compare(XSRegisters.OldToNewRegister(RegistersEnum.ECX), XSRegisters.OldToNewRegister(RegistersEnum.EDX));
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new ConditionalJump { Condition = ConditionalTestEnum.Above, DestinationLabel = LabelTrue };
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new ConditionalJump { Condition = ConditionalTestEnum.Below, DestinationLabel = LabelFalse };
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XS.Compare(XSRegisters.OldToNewRegister(RegistersEnum.EBX), XSRegisters.OldToNewRegister(RegistersEnum.EAX));
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new Label(LabelTrue);
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new ConditionalMove { Condition = ConditionalTestEnum.Above, DestinationReg = RegistersEnum.EDI, SourceReg = RegistersEnum.ESI };
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new Label(LabelFalse);
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}
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XS.Push(XSRegisters.OldToNewRegister(RegistersEnum.EDI));
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/*
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new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Above, DestinationLabel = LabelTrue };
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new Label(LabelFalse);
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new CPUx86.Push { DestinationValue = 0 };
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new CPUx86.Jump { DestinationLabel = GetLabel(aMethod, aOpCode.NextPosition) };
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new Label( LabelTrue );
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new CPUx86.Push { DestinationValue = 1 };
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*/
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}
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else
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{
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if (xStackItemIsFloat)
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{
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new MoveSS { DestinationReg = RegistersEnum.XMM0, SourceReg = RegistersEnum.ESP, SourceIsIndirect = true };
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XS.Add(XSRegisters.OldToNewRegister(RegistersEnum.ESP), 4);
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new MoveSS { DestinationReg = RegistersEnum.XMM1, SourceReg = RegistersEnum.ESP, SourceIsIndirect = true };
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new CompareSS { DestinationReg = RegistersEnum.XMM1, SourceReg = RegistersEnum.XMM0, pseudoOpcode = (byte)ComparePseudoOpcodes.NotLessThanOrEqualTo };
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XS.SSE2.MoveD(XSRegisters.XMM1, XSRegisters.EBX);
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XS.And(XSRegisters.OldToNewRegister(RegistersEnum.EBX), 1);
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new Mov { SourceReg = RegistersEnum.EBX, DestinationReg = RegistersEnum.ESP, DestinationIsIndirect = true };
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}
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else
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{
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XS.Pop(XSRegisters.OldToNewRegister(RegistersEnum.EAX));
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new Compare { DestinationReg = RegistersEnum.EAX, SourceReg = RegistersEnum.ESP, SourceIsIndirect = true };
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new ConditionalJump { Condition = ConditionalTestEnum.Below, DestinationLabel = LabelTrue };
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new Jump { DestinationLabel = LabelFalse };
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new Label( LabelTrue );
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XS.Add(XSRegisters.OldToNewRegister(RegistersEnum.ESP), 4);
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new Push { DestinationValue = 1 };
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new Jump { DestinationLabel = GetLabel(aMethod, aOpCode.NextPosition) };
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new Label( LabelFalse );
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XS.Add(XSRegisters.OldToNewRegister(RegistersEnum.ESP), 4);
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new CPUx86.Push { DestinationValue = 0 };
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}
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}
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}
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// using System;
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//
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// using CPUx86 = Cosmos.Assembler.x86;
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// using CPU = Cosmos.Assembler.x86;
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// using Cosmos.IL2CPU.X86;
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// using Cosmos.IL2CPU.X86;
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//
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// namespace Cosmos.IL2CPU.IL.X86 {
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// [Cosmos.Assembler.OpCode(OpCodeEnum.Cgt_Un)]
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// public class Cgt_Un: Op {
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// private readonly string NextInstructionLabel;
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// private readonly string CurInstructionLabel;
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// private uint mCurrentOffset;
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// private MethodInformation mMethodInfo;
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// public Cgt_Un(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo)
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// {
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// NextInstructionLabel = GetInstructionLabel(aReader.NextPosition);
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// CurInstructionLabel = GetInstructionLabel(aReader);
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// mMethodInfo = aMethodInfo;
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// mCurrentOffset = aReader.Position;
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// }
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//
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// public override void DoAssemble()
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// {
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// var xStackItem = Assembler.Stack.Pop();
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// if (xStackItem.IsFloat)
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// {
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Cgt_Un: Floats not yet supported", CurInstructionLabel, mMethodInfo, mCurrentOffset, NextInstructionLabel);
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// return;
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// }
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// if (xStackItem.Size > 8)
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// {
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// EmitNotImplementedException(Assembler, GetServiceProvider(), "Cgt_Un: StackSizes>8 not supported", CurInstructionLabel, mMethodInfo, mCurrentOffset, NextInstructionLabel);
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// return;
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// }
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// Assembler.Stack.Push(new StackContent(4, typeof(bool)));
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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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// if (xStackItem.Size > 4)
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// {
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// new CPUx86.Xor { DestinationReg = CPUx86.Registers.ESI, SourceReg = CPUx86.Registers.ESI};
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESI, SourceValue = 1 };
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// new CPUx86.Xor { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI};
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// //esi = 1
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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.ConditionalMove(Condition.Above, "edi", "esi");
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// //new CPUx86.Push { DestinationReg = Registers.EDI };
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//
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// new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Above, DestinationLabel = LabelTrue };
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// new CPUx86.Push { DestinationValue = 0 };
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// new CPUx86.Jump { DestinationLabel = NextInstructionLabel };
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//
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// new Label(LabelTrue);
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// new CPUx86.Push{DestinationValue=1};
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//
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// } else
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// {
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// new CPUx86.Pop{DestinationReg=CPUx86.Registers.EAX};
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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.Below, DestinationLabel = LabelTrue };
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// new CPUx86.Jump { DestinationLabel = LabelFalse };
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// new Label(LabelTrue);
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
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// new CPUx86.Push { DestinationValue = 1 };
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// new CPUx86.Jump { DestinationLabel = NextInstructionLabel };
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// new Label(LabelFalse);
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 4 };
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// new CPUx86.Push { DestinationValue = 0 };
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// new CPUx86.Jump { DestinationLabel = NextInstructionLabel };
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// }
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// }
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// }
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// }
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}
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}
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