R/ChocolArm64/Translation/AILOpCodeStore.cs

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using ChocolArm64.State;
using System.Reflection.Emit;
namespace ChocolArm64.Translation
{
struct AILOpCodeStore : IAILEmit
{
public int Index { get; private set; }
public AIoType IoType { get; private set; }
public ARegisterSize RegisterSize { get; private set; }
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public AILOpCodeStore(int Index, AIoType IoType, ARegisterSize RegisterSize = 0)
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{
this.Index = Index;
this.IoType = IoType;
this.RegisterSize = RegisterSize;
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}
public void Emit(AILEmitter Context)
{
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switch (IoType)
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{
case AIoType.Arg: Context.Generator.EmitStarg(Index); break;
case AIoType.Fields:
{
long IntOutputs = Context.LocalAlloc.GetIntOutputs(Context.GetILBlock(Index));
long VecOutputs = Context.LocalAlloc.GetVecOutputs(Context.GetILBlock(Index));
StoreLocals(Context, IntOutputs, ARegisterType.Int);
StoreLocals(Context, VecOutputs, ARegisterType.Vector);
break;
}
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case AIoType.Flag: EmitStloc(Context, Index, ARegisterType.Flag); break;
case AIoType.Int: EmitStloc(Context, Index, ARegisterType.Int); break;
case AIoType.Vector: EmitStloc(Context, Index, ARegisterType.Vector); break;
}
}
private void StoreLocals(AILEmitter Context, long Outputs, ARegisterType BaseType)
{
for (int Bit = 0; Bit < 64; Bit++)
{
long Mask = 1L << Bit;
if ((Outputs & Mask) != 0)
{
ARegister Reg = AILEmitter.GetRegFromBit(Bit, BaseType);
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Context.Generator.EmitLdarg(ATranslatedSub.StateArgIdx);
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Context.Generator.EmitLdloc(Context.GetLocalIndex(Reg));
Context.Generator.Emit(OpCodes.Stfld, Reg.GetField());
}
}
}
private void EmitStloc(AILEmitter Context, int Index, ARegisterType RegisterType)
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{
ARegister Reg = new ARegister(Index, RegisterType);
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if (RegisterType == ARegisterType.Int &&
RegisterSize == ARegisterSize.Int32)
{
Context.Generator.Emit(OpCodes.Conv_U8);
}
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Context.Generator.EmitStloc(Context.GetLocalIndex(Reg));
}
}
}