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using System;
using System.Reflection;
namespace ChocolArm64.State
{
struct Register
{
public int Index;
public RegisterType Type;
public Register(int index, RegisterType type)
{
Index = index;
Type = type;
}
public override int GetHashCode()
{
return (ushort)Index | ((ushort)Type << 16);
}
public override bool Equals(object obj)
{
return obj is Register reg &&
reg.Index == Index &&
reg.Type == Type;
}
public FieldInfo GetField()
{
switch (Type)
{
case RegisterType.Flag: return GetFieldFlag();
case RegisterType.Int: return GetFieldInt();
case RegisterType.Vector: return GetFieldVector();
}
throw new InvalidOperationException();
}
private FieldInfo GetFieldFlag()
{
switch ((PState)Index)
{
case PState.TBit: return GetField(nameof(CpuThreadState.Thumb));
case PState.EBit: return GetField(nameof(CpuThreadState.BigEndian));
case PState.VBit: return GetField(nameof(CpuThreadState.Overflow));
case PState.CBit: return GetField(nameof(CpuThreadState.Carry));
case PState.ZBit: return GetField(nameof(CpuThreadState.Zero));
case PState.NBit: return GetField(nameof(CpuThreadState.Negative));
}
throw new InvalidOperationException();
}
private FieldInfo GetFieldInt()
{
switch (Index)
{
case 0: return GetField(nameof(CpuThreadState.X0));
case 1: return GetField(nameof(CpuThreadState.X1));
case 2: return GetField(nameof(CpuThreadState.X2));
case 3: return GetField(nameof(CpuThreadState.X3));
case 4: return GetField(nameof(CpuThreadState.X4));
case 5: return GetField(nameof(CpuThreadState.X5));
case 6: return GetField(nameof(CpuThreadState.X6));
case 7: return GetField(nameof(CpuThreadState.X7));
case 8: return GetField(nameof(CpuThreadState.X8));
case 9: return GetField(nameof(CpuThreadState.X9));
case 10: return GetField(nameof(CpuThreadState.X10));
case 11: return GetField(nameof(CpuThreadState.X11));
case 12: return GetField(nameof(CpuThreadState.X12));
case 13: return GetField(nameof(CpuThreadState.X13));
case 14: return GetField(nameof(CpuThreadState.X14));
case 15: return GetField(nameof(CpuThreadState.X15));
case 16: return GetField(nameof(CpuThreadState.X16));
case 17: return GetField(nameof(CpuThreadState.X17));
case 18: return GetField(nameof(CpuThreadState.X18));
case 19: return GetField(nameof(CpuThreadState.X19));
case 20: return GetField(nameof(CpuThreadState.X20));
case 21: return GetField(nameof(CpuThreadState.X21));
case 22: return GetField(nameof(CpuThreadState.X22));
case 23: return GetField(nameof(CpuThreadState.X23));
case 24: return GetField(nameof(CpuThreadState.X24));
case 25: return GetField(nameof(CpuThreadState.X25));
case 26: return GetField(nameof(CpuThreadState.X26));
case 27: return GetField(nameof(CpuThreadState.X27));
case 28: return GetField(nameof(CpuThreadState.X28));
case 29: return GetField(nameof(CpuThreadState.X29));
case 30: return GetField(nameof(CpuThreadState.X30));
case 31: return GetField(nameof(CpuThreadState.X31));
}
throw new InvalidOperationException();
}
private FieldInfo GetFieldVector()
{
switch (Index)
{
case 0: return GetField(nameof(CpuThreadState.V0));
case 1: return GetField(nameof(CpuThreadState.V1));
case 2: return GetField(nameof(CpuThreadState.V2));
case 3: return GetField(nameof(CpuThreadState.V3));
case 4: return GetField(nameof(CpuThreadState.V4));
case 5: return GetField(nameof(CpuThreadState.V5));
case 6: return GetField(nameof(CpuThreadState.V6));
case 7: return GetField(nameof(CpuThreadState.V7));
case 8: return GetField(nameof(CpuThreadState.V8));
case 9: return GetField(nameof(CpuThreadState.V9));
case 10: return GetField(nameof(CpuThreadState.V10));
case 11: return GetField(nameof(CpuThreadState.V11));
case 12: return GetField(nameof(CpuThreadState.V12));
case 13: return GetField(nameof(CpuThreadState.V13));
case 14: return GetField(nameof(CpuThreadState.V14));
case 15: return GetField(nameof(CpuThreadState.V15));
case 16: return GetField(nameof(CpuThreadState.V16));
case 17: return GetField(nameof(CpuThreadState.V17));
case 18: return GetField(nameof(CpuThreadState.V18));
case 19: return GetField(nameof(CpuThreadState.V19));
case 20: return GetField(nameof(CpuThreadState.V20));
case 21: return GetField(nameof(CpuThreadState.V21));
case 22: return GetField(nameof(CpuThreadState.V22));
case 23: return GetField(nameof(CpuThreadState.V23));
case 24: return GetField(nameof(CpuThreadState.V24));
case 25: return GetField(nameof(CpuThreadState.V25));
case 26: return GetField(nameof(CpuThreadState.V26));
case 27: return GetField(nameof(CpuThreadState.V27));
case 28: return GetField(nameof(CpuThreadState.V28));
case 29: return GetField(nameof(CpuThreadState.V29));
case 30: return GetField(nameof(CpuThreadState.V30));
case 31: return GetField(nameof(CpuThreadState.V31));
}
throw new InvalidOperationException();
}
private FieldInfo GetField(string name)
{
return typeof(CpuThreadState).GetField(name);
}
}
}
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