mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-20 21:08:51 +00:00
45 lines
2.7 KiB
C#
45 lines
2.7 KiB
C#
using System;
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using Cosmos.Assembler;
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using XSharp.Compiler;
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using CPUx86 = Cosmos.Assembler.x86;
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namespace Cosmos.IL2CPU.Plugs.System.Runtime.CompilerServices {
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[Plug(Target = typeof(global::System.Runtime.CompilerServices.RuntimeHelpers))]
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public static class RuntimeHelpersImpl {
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public static void cctor() {
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//TODO: do something
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}
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[Inline(TargetPlatform = TargetPlatform.x86)]
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public static void InitializeArray(Array array, RuntimeFieldHandle fldHandle) {
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// Arguments:
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// Array aArray, RuntimeFieldHandle aFieldHandle
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.EDI, SourceReg = CPUx86.RegistersEnum.EBP, SourceIsIndirect = true, SourceDisplacement = 0xC }; // array
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new CPUx86.Mov {DestinationReg = CPUx86.RegistersEnum.EDI, SourceReg = CPUx86.RegistersEnum.EDI, SourceIsIndirect = true};
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.ESI, SourceReg = CPUx86.RegistersEnum.EBP, SourceIsIndirect = true, SourceDisplacement = 8 };// aFieldHandle
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EDI), 8);
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new CPUx86.Push {DestinationReg = CPUx86.RegistersEnum.EDI, DestinationIsIndirect = true};
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EDI), 4);
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.EAX, SourceReg = CPUx86.RegistersEnum.EDI, SourceIsIndirect = true };
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new CPUx86.Multiply {DestinationReg = CPUx86.RegistersEnum.ESP, DestinationIsIndirect = true, Size = 32};
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XS.Pop(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.ECX));
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XS.Set(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.ECX), XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EAX));
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XS.Set(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EAX), 0);
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EDI), 4);
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new Label(".StartLoop");
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.DL, SourceReg = CPUx86.RegistersEnum.ESI, SourceIsIndirect = true };
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new CPUx86.Mov { DestinationReg = CPUx86.RegistersEnum.EDI, DestinationIsIndirect = true, SourceReg = CPUx86.RegistersEnum.DL };
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EAX), 1);
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.ESI), 1);
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XS.Add(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EDI), 1);
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XS.Compare(XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.EAX), XSRegisters.OldToNewRegister(CPUx86.RegistersEnum.ECX));
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new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".EndLoop" };
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new CPUx86.Jump { DestinationLabel = ".StartLoop" };
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new Label(".EndLoop");
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}
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}
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}
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