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Update ASoftFloat.cs

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LDj3SNuD 2018-10-05 00:31:30 +02:00 • committed by GitHub
commit 61036b1e41
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1 changed files with 48 additions and 32 deletions
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80
ChocolArm64/Instruction/ASoftFloat.cs
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@ -621,6 +621,30 @@ namespace ChocolArm64.Instruction
return Result; return Result;
} }
public static float FPRecpX(float Value, AThreadState State)
{
Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_32.FPRecpX: State.Fpcr = 0x{State.Fpcr:X8}");
Value.FPUnpack(out FPType Type, out bool Sign, out uint Op);
float Result;
if (Type == FPType.SNaN || Type == FPType.QNaN)
{
Result = FPProcessNaN(Type, Op, State);
}
else
{
uint NotExp = (~Op >> 23) & 0xFFu;
uint MaxExp = 0xFEu;
Result = BitConverter.Int32BitsToSingle(
(int)((Sign ? 1u : 0u) << 31 | (NotExp == 0xFFu ? MaxExp : NotExp) << 23));
}
return Result;
}
public static float FPRSqrtStepFused(float Value1, float Value2, AThreadState State) public static float FPRSqrtStepFused(float Value1, float Value2, AThreadState State)
{ {
Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_32.FPRSqrtStepFused: State.Fpcr = 0x{State.Fpcr:X8}"); Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_32.FPRSqrtStepFused: State.Fpcr = 0x{State.Fpcr:X8}");
@ -751,14 +775,6 @@ namespace ChocolArm64.Instruction
InputDenorm = 7 InputDenorm = 7
} }
private enum FPRounding
{
TIEEVEN,
POSINF,
NEGINF,
ZERO
}
[MethodImpl(MethodImplOptions.AggressiveInlining)] [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static float FPDefaultNaN() private static float FPDefaultNaN()
{ {
@ -941,14 +957,6 @@ namespace ChocolArm64.Instruction
State.Fpsr |= 1 << (int)Exc; State.Fpsr |= 1 << (int)Exc;
} }
} }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static FPRounding FPRoundingMode(AThreadState State)
{
const int RModeBits = 22; // Rounding Mode control field.
return (FPRounding)((State.Fpcr >> RModeBits) & 0b11);
}
} }
static class ASoftFloat_64 static class ASoftFloat_64
@ -1339,6 +1347,30 @@ namespace ChocolArm64.Instruction
return Result; return Result;
} }
public static double FPRecpX(double Value, AThreadState State)
{
Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_64.FPRecpX: State.Fpcr = 0x{State.Fpcr:X8}");
Value.FPUnpack(out FPType Type, out bool Sign, out ulong Op);
double Result;
if (Type == FPType.SNaN || Type == FPType.QNaN)
{
Result = FPProcessNaN(Type, Op, State);
}
else
{
ulong NotExp = (~Op >> 52) & 0x7FFul;
ulong MaxExp = 0x7FEul;
Result = BitConverter.Int64BitsToDouble(
(long)((Sign ? 1ul : 0ul) << 63 | (NotExp == 0x7FFul ? MaxExp : NotExp) << 52));
}
return Result;
}
public static double FPRSqrtStepFused(double Value1, double Value2, AThreadState State) public static double FPRSqrtStepFused(double Value1, double Value2, AThreadState State)
{ {
Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_64.FPRSqrtStepFused: State.Fpcr = 0x{State.Fpcr:X8}"); Debug.WriteLineIf(State.Fpcr != 0, $"ASoftFloat_64.FPRSqrtStepFused: State.Fpcr = 0x{State.Fpcr:X8}");
@ -1469,14 +1501,6 @@ namespace ChocolArm64.Instruction
InputDenorm = 7 InputDenorm = 7
} }
private enum FPRounding
{
TIEEVEN,
POSINF,
NEGINF,
ZERO
}
[MethodImpl(MethodImplOptions.AggressiveInlining)] [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static double FPDefaultNaN() private static double FPDefaultNaN()
{ {
@ -1659,13 +1683,5 @@ namespace ChocolArm64.Instruction
State.Fpsr |= 1 << (int)Exc; State.Fpsr |= 1 << (int)Exc;
} }
} }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static FPRounding FPRoundingMode(AThreadState State)
{
const int RModeBits = 22; // Rounding Mode control field.
return (FPRounding)((State.Fpcr >> RModeBits) & 0b11);
}
} }
} }