private static void EmitMemoryCall(ILEmitterCtx context, string name, int rn = -1)
{
context.EmitLdarg(TranslatedSub.MemoryArgIdx);
context.EmitLdarg(TranslatedSub.StateArgIdx);
context.EmitCallPropGet(typeof(CpuThreadState), nameof(CpuThreadState.Core));
if (rn != -1)
{
context.EmitLdint(rn);
}
context.EmitCall(typeof(MemoryManager), name);
}
public static void Mrs(ILEmitterCtx context)
{
OpCodeSystem64 op = (OpCodeSystem64)context.CurrOp;
context.EmitLdarg(TranslatedSub.StateArgIdx);
string propName;
switch (GetPackedId(op))
{
case 0b11_011_0000_0000_001: propName = nameof(CpuThreadState.CtrEl0); break;
case 0b11_011_0000_0000_111: propName = nameof(CpuThreadState.DczidEl0); break;
case 0b11_011_0100_0100_000: propName = nameof(CpuThreadState.Fpcr); break;
case 0b11_011_0100_0100_001: propName = nameof(CpuThreadState.Fpsr); break;
case 0b11_011_1101_0000_010: propName = nameof(CpuThreadState.TpidrEl0); break;
case 0b11_011_1101_0000_011: propName = nameof(CpuThreadState.Tpidr); break;
case 0b11_011_1110_0000_000: propName = nameof(CpuThreadState.CntfrqEl0); break;
case 0b11_011_1110_0000_001: propName = nameof(CpuThreadState.CntpctEl0); break;
default: throw new NotImplementedException($"Unknown MRS at {op.Position:x16}");
}
context.EmitCallPropGet(typeof(CpuThreadState), propName);
PropertyInfo propInfo = typeof(CpuThreadState).GetProperty(propName);
if (propInfo.PropertyType != typeof(long) &&
propInfo.PropertyType != typeof(ulong))
{
context.Emit(OpCodes.Conv_U8);
}
context.EmitStintzr(op.Rt);
}
private static void EmitExceptionCall(ILEmitterCtx context, string mthdName)
{
OpCodeException64 op = (OpCodeException64)context.CurrOp;
context.EmitStoreState();
context.EmitLdarg(TranslatedSub.StateArgIdx);
context.EmitLdc_I8(op.Position);
context.EmitLdc_I4(op.Id);
context.EmitPrivateCall(typeof(CpuThreadState), mthdName);
//Check if the thread should still be running, if it isn't then we return 0
//to force a return to the dispatcher and then exit the thread.
context.EmitLdarg(TranslatedSub.StateArgIdx);
context.EmitCallPropGet(typeof(CpuThreadState), nameof(CpuThreadState.Running));
ILLabel lblEnd = new ILLabel();
context.Emit(OpCodes.Brtrue_S, lblEnd);
context.EmitLdc_I8(0);
context.Emit(OpCodes.Ret);
context.MarkLabel(lblEnd);
if (context.CurrBlock.Next != null)
{
context.EmitLoadState(context.CurrBlock.Next);
}
else
{
context.EmitLdc_I8(op.Position + 4);
context.Emit(OpCodes.Ret);
}
}