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Update ASoftFallback.cs

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LDj3SNuD 2018-09-07 00:27:00 +02:00 • committed by GitHub
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86
ChocolArm64/Instruction/ASoftFallback.cs
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@ -16,6 +16,92 @@ namespace ChocolArm64.Instruction
Context.EmitCall(typeof(ASoftFallback), MthdName); Context.EmitCall(typeof(ASoftFallback), MthdName);
} }
#region "ShrImm_64"
public static long SignedShrImm_64(long Value, long RoundConst, int Shift)
{
if (RoundConst == 0L)
{
if (Shift <= 63)
{
return Value >> Shift;
}
else /* if (Shift == 64) */
{
if (Value < 0L)
{
return -1L;
}
else
{
return 0L;
}
}
}
else /* if (RoundConst == 1L << (Shift - 1)) */
{
if (Shift <= 63)
{
long Add = Value + RoundConst;
if ((~Value & (Value ^ Add)) < 0L)
{
return (long)((ulong)Add >> Shift);
}
else
{
return Add >> Shift;
}
}
else /* if (Shift == 64) */
{
return 0L;
}
}
}
public static ulong UnsignedShrImm_64(ulong Value, long RoundConst, int Shift)
{
if (RoundConst == 0L)
{
if (Shift <= 63)
{
return Value >> Shift;
}
else /* if (Shift == 64) */
{
return 0UL;
}
}
else /* if (RoundConst == 1L << (Shift - 1)) */
{
ulong Add = Value + (ulong)RoundConst;
if ((Add < Value) && (Add < (ulong)RoundConst))
{
if (Shift <= 63)
{
return (Add >> Shift) | (0x8000000000000000UL >> (Shift - 1));
}
else /* if (Shift == 64) */
{
return 1UL;
}
}
else
{
if (Shift <= 63)
{
return Add >> Shift;
}
else /* if (Shift == 64) */
{
return 0UL;
}
}
}
}
#endregion
#region "Saturating" #region "Saturating"
public static long SignedSrcSignedDstSatQ(long op, int Size, AThreadState State) public static long SignedSrcSignedDstSatQ(long op, int Size, AThreadState State)
{ {