mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 14:02:19 +00:00
180 lines
9.6 KiB
C#
180 lines
9.6 KiB
C#
using System;
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using CPUx86 = Indy.IL2CPU.Assembler.X86;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode( ILOpCode.Code.Stelem_Ref )]
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public class Stelem_Ref : ILOp
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{
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public Stelem_Ref( Cosmos.IL2CPU.Assembler aAsmblr )
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: base( aAsmblr )
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{
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}
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public static void Assemble( Assembler aAssembler, uint aElementSize, MethodInfo aMethod, ILOpCode aOpCode )
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{
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throw new NotImplementedException();
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// stack - 3 == the array
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// stack - 2 == the index
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// stack - 1 == the new value
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uint xStackSize = aElementSize;
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if( xStackSize % 4 != 0 )
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{
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xStackSize += 4 - xStackSize % 4;
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}
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new CPUx86.Push { DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = ( int )( xStackSize + 4 ) };
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//TODO: Implement GC first
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//new CPUx86.Call { DestinationLabel = IL2CPU.Assembler.MethodInfoLabelGenerator.GenerateLabelName( GCImplementationRefs.DecRefCountRef ) };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.ESP, SourceIsIndirect = true, SourceDisplacement = ( int )xStackSize }; // the index
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new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ESP, SourceIsIndirect = true, SourceDisplacement = ( int )xStackSize + 4 }; // the index
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//TODO: Implement ObjectImpl first
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//new CPUx86.Add { DestinationReg = CPUx86.Registers.ECX, SourceValue = ( uint )( ObjectImpl.FieldDataOffset + 4 ) };
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new CPUx86.Push { DestinationValue = aElementSize };
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aAssembler.StackContents.Push( new StackContent( 4, true, false, true ) );
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EBX };
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aAssembler.StackContents.Push( new StackContent( 4, true, false, true ) );
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//Multiply( aAssembler, aServiceProvider, aCurrentLabel, aCurrentMethodInfo, aCurrentOffset, aNextLabel );
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( new Mul( aAssembler ) ).Execute( aMethod, aOpCode );
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new CPUx86.Push { DestinationReg = CPUx86.Registers.ECX };
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aAssembler.StackContents.Push( new StackContent( 4, true, false, true ) );
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//Add( aAssembler, aServiceProvider, aCurrentLabel, aCurrentMethodInfo, aCurrentOffset, aNextLabel );
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( new Add( aAssembler ) ).Execute( aMethod, aOpCode );
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
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aAssembler.StackContents.Pop();
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for( int i = ( int )( aElementSize / 4 ) - 1; i >= 0; i -= 1 )
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{
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new Comment( "Start 1 dword" );
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EBX };
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new CPUx86.Add { DestinationReg = CPUx86.Registers.ECX, SourceValue = 4 };
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}
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switch( aElementSize % 4 )
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{
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case 1:
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{
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new Comment( "Start 1 byte" );
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.BL };
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break;
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}
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case 2:
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{
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new Comment( "Start 1 word" );
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new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.BX };
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break;
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}
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case 0:
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{
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break;
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}
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default:
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throw new Exception( "Remainder size " + ( aElementSize % 4 ) + " not supported!" );
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}
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new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 0x8 };
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aAssembler.StackContents.Pop();
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aAssembler.StackContents.Pop();
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aAssembler.StackContents.Pop();
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}
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public override void Execute( MethodInfo aMethod, ILOpCode aOpCode )
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{
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Assemble( Assembler, 4, aMethod, aOpCode );
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}
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// 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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// using Indy.IL2CPU.Assembler;
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//
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// namespace Indy.IL2CPU.IL.X86 {
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// [OpCode(OpCodeEnum.Stelem_Ref)]
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// public class Stelem_Ref: Op {
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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 Stelem_Ref(ILReader aReader, MethodInformation aMethodInfo)
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// : base(aReader, aMethodInfo)
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// {
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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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//
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// public static void Assemble(CPU.Assembler aAssembler, uint aElementSize, IServiceProvider aServiceProvider, string aCurrentLabel, MethodInformation aCurrentMethodInfo, uint aCurrentOffset, string aNextLabel)
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// {
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// // stack - 3 == the array
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// // stack - 2 == the index
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// // stack - 1 == the new value
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// uint xStackSize = aElementSize;
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// if (xStackSize % 4 != 0) {
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// xStackSize += 4 - xStackSize % 4;
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// }
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = (int)(xStackSize + 4) };
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// new CPUx86.Call { DestinationLabel = IL2CPU.Assembler.MethodInfoLabelGenerator.GenerateLabelName(GCImplementationRefs.DecRefCountRef) };
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// new CPUx86.Move{DestinationReg=CPUx86.Registers.EBX, SourceReg=CPUx86.Registers.ESP, SourceIsIndirect=true, SourceDisplacement= (int)xStackSize}; // the index
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// new CPUx86.Move{DestinationReg=CPUx86.Registers.ECX, SourceReg=CPUx86.Registers.ESP, SourceIsIndirect=true, SourceDisplacement= (int)xStackSize+4}; // the index
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ECX, SourceValue = (uint)(ObjectImpl.FieldDataOffset + 4) };
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// new CPUx86.Push { DestinationValue = aElementSize };
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// aAssembler.StackContents.Push(new StackContent(4, true, false, true));
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// new CPUx86.Push { DestinationReg = CPUx86.Registers.EBX };
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// aAssembler.StackContents.Push(new StackContent(4, true, false, true));
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// Multiply(aAssembler, aServiceProvider,
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// aCurrentLabel, aCurrentMethodInfo, aCurrentOffset, aNextLabel);
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// new CPUx86.Push{DestinationReg=CPUx86.Registers.ECX};
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// aAssembler.StackContents.Push(new StackContent(4, true, false, true));
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// Add(aAssembler, aServiceProvider, aCurrentLabel, aCurrentMethodInfo, aCurrentOffset, aNextLabel);
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.ECX };
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// aAssembler.StackContents.Pop();
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// for (int i = (int)(aElementSize / 4) - 1; i >= 0; i -= 1) {
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// new CPU.Comment("Start 1 dword");
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EBX };
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ECX, SourceValue = 4 };
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// }
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// switch (aElementSize % 4) {
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// case 1: {
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// new CPU.Comment("Start 1 byte");
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// new CPUx86.Pop { DestinationReg = CPUx86.Registers.EBX };
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.BL };
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// break;
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// }
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// case 2: {
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// new CPU.Comment("Start 1 word");
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// new CPUx86.Pop{DestinationReg = CPUx86.Registers.EBX};
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// new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.BX };
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// break;
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// }
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// case 0: {
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// break;
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// }
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// default:
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// throw new Exception("Remainder size " + (aElementSize % 4) + " not supported!");
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//
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// }
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// new CPUx86.Add { DestinationReg = CPUx86.Registers.ESP, SourceValue = 0x8 };
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// aAssembler.StackContents.Pop();
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// aAssembler.StackContents.Pop();
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// aAssembler.StackContents.Pop();
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// }
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//
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// public override void DoAssemble() {
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// Assemble(Assembler, 4, GetServiceProvider(), mCurLabel, mMethodInformation, mCurOffset, mNextLabel);
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// }
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// }
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// }
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}
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}
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