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using ChocolArm64.State;
using System.Reflection.Emit;
namespace ChocolArm64.Translation
{
struct IlOpCodeStore : IILEmit
{
public int Index { get; private set; }
public IoType IoType { get; private set; }
public RegisterSize RegisterSize { get; private set; }
public IlOpCodeStore(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.EmitStarg(Index); break;
case IoType.Fields:
{
long intOutputs = context.LocalAlloc.GetIntOutputs(context.GetIlBlock(Index));
long vecOutputs = context.LocalAlloc.GetVecOutputs(context.GetIlBlock(Index));
StoreLocals(context, intOutputs, RegisterType.Int);
StoreLocals(context, vecOutputs, RegisterType.Vector);
break;
}
case IoType.Flag: EmitStloc(context, Index, RegisterType.Flag); break;
case IoType.Int: EmitStloc(context, Index, RegisterType.Int); break;
case IoType.Vector: EmitStloc(context, Index, RegisterType.Vector); break;
}
}
private void StoreLocals(ILEmitter context, long outputs, RegisterType baseType)
{
for (int bit = 0; bit < 64; bit++)
{
long mask = 1L << bit;
if ((outputs & mask) != 0)
{
Register reg = ILEmitter.GetRegFromBit(bit, baseType);
context.Generator.EmitLdarg(TranslatedSub.StateArgIdx);
context.Generator.EmitLdloc(context.GetLocalIndex(reg));
context.Generator.Emit(OpCodes.Stfld, reg.GetField());
}
}
}
private void EmitStloc(ILEmitter context, int index, RegisterType registerType)
{
Register reg = new Register(index, registerType);
if (registerType == RegisterType.Int &&
RegisterSize == RegisterSize.Int32)
{
context.Generator.Emit(OpCodes.Conv_U8);
}
context.Generator.EmitStloc(context.GetLocalIndex(reg));
}
}
}
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