Ryujinx-git/ChocolArm64/Translation/ILOpCodeLoad.cs

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using ChocolArm64.State;
using System.Reflection.Emit;
namespace ChocolArm64.Translation
{
struct IlOpCodeLoad : IILEmit
{
public int Index { get; private set; }
public IoType IoType { get; private set; }
public RegisterSize RegisterSize { get; private set; }
public IlOpCodeLoad(int index, IoType ioType, RegisterSize registerSize = 0)
{
Index = index;
IoType = ioType;
RegisterSize = registerSize;
}
public void Emit(ILEmitter context)
{
switch (IoType)
{
case IoType.Arg: context.Generator.EmitLdarg(Index); break;
case IoType.Fields:
{
long intInputs = context.LocalAlloc.GetIntInputs(context.GetIlBlock(Index));
long vecInputs = context.LocalAlloc.GetVecInputs(context.GetIlBlock(Index));
LoadLocals(context, intInputs, RegisterType.Int);
LoadLocals(context, vecInputs, RegisterType.Vector);
break;
}
case IoType.Flag: EmitLdloc(context, Index, RegisterType.Flag); break;
case IoType.Int: EmitLdloc(context, Index, RegisterType.Int); break;
case IoType.Vector: EmitLdloc(context, Index, RegisterType.Vector); break;
}
}
private void LoadLocals(ILEmitter context, long inputs, RegisterType baseType)
{
for (int bit = 0; bit < 64; bit++)
{
long mask = 1L << bit;
if ((inputs & mask) != 0)
{
Register reg = ILEmitter.GetRegFromBit(bit, baseType);
context.Generator.EmitLdarg(TranslatedSub.StateArgIdx);
context.Generator.Emit(OpCodes.Ldfld, reg.GetField());
context.Generator.EmitStloc(context.GetLocalIndex(reg));
}
}
}
private void EmitLdloc(ILEmitter context, int index, RegisterType registerType)
{
Register reg = new Register(index, registerType);
context.Generator.EmitLdloc(context.GetLocalIndex(reg));
if (registerType == RegisterType.Int &&
RegisterSize == RegisterSize.Int32)
{
context.Generator.Emit(OpCodes.Conv_U4);
}
}
}
}