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RyuKen/ChocolArm64/Instruction/ASoftFallback.cs

485 lines
16 KiB
C#
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using ChocolArm64.State;
using ChocolArm64.Translation;
using System;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace ChocolArm64.Instruction
{
static class ASoftFallback
{
public static void EmitCall(AILEmitterCtx Context, string Name64, string Name128)
{
bool IsSimd64 = Context.CurrOp.RegisterSize == ARegisterSize.SIMD64;
Context.EmitCall(typeof(ASoftFallback), IsSimd64 ? Name64 : Name128);
}
public static void EmitCall(AILEmitterCtx Context, string MthdName)
{
Context.EmitCall(typeof(ASoftFallback), MthdName);
}
public static uint CountLeadingSigns32(uint Value) => (uint)CountLeadingSigns(Value, 32);
public static ulong CountLeadingSigns64(ulong Value) => (ulong)CountLeadingSigns(Value, 64);
private static ulong CountLeadingSigns(ulong Value, int Size)
{
return CountLeadingZeros((Value >> 1) ^ Value, Size - 1);
}
public static uint CountLeadingZeros32(uint Value) => (uint)CountLeadingZeros(Value, 32);
public static ulong CountLeadingZeros64(ulong Value) => (ulong)CountLeadingZeros(Value, 64);
private static ulong CountLeadingZeros(ulong Value, int Size)
{
int HighBit = Size - 1;
for (int Bit = HighBit; Bit >= 0; Bit--)
{
if (((Value >> Bit) & 1) != 0)
{
return (ulong)(HighBit - Bit);
}
}
return (ulong)Size;
}
private const uint Crc32RevPoly = 0xedb88320;
private const uint Crc32cRevPoly = 0x82f63b78;
public static uint Crc32b(uint Crc, byte Val) => Crc32 (Crc, Crc32RevPoly, Val);
public static uint Crc32h(uint Crc, ushort Val) => Crc32h(Crc, Crc32RevPoly, Val);
public static uint Crc32w(uint Crc, uint Val) => Crc32w(Crc, Crc32RevPoly, Val);
public static uint Crc32x(uint Crc, ulong Val) => Crc32x(Crc, Crc32RevPoly, Val);
public static uint Crc32cb(uint Crc, byte Val) => Crc32 (Crc, Crc32cRevPoly, Val);
public static uint Crc32ch(uint Crc, ushort Val) => Crc32h(Crc, Crc32cRevPoly, Val);
public static uint Crc32cw(uint Crc, uint Val) => Crc32w(Crc, Crc32cRevPoly, Val);
public static uint Crc32cx(uint Crc, ulong Val) => Crc32x(Crc, Crc32cRevPoly, Val);
private static uint Crc32h(uint Crc, uint Poly, ushort Val)
{
Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
return Crc;
}
private static uint Crc32w(uint Crc, uint Poly, uint Val)
{
Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
Crc = Crc32(Crc, Poly, (byte)(Val >> 16));
Crc = Crc32(Crc, Poly, (byte)(Val >> 24));
return Crc;
}
private static uint Crc32x(uint Crc, uint Poly, ulong Val)
{
Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
Crc = Crc32(Crc, Poly, (byte)(Val >> 16));
Crc = Crc32(Crc, Poly, (byte)(Val >> 24));
Crc = Crc32(Crc, Poly, (byte)(Val >> 32));
Crc = Crc32(Crc, Poly, (byte)(Val >> 40));
Crc = Crc32(Crc, Poly, (byte)(Val >> 48));
Crc = Crc32(Crc, Poly, (byte)(Val >> 56));
return Crc;
}
private static uint Crc32(uint Crc, uint Poly, byte Val)
{
Crc ^= Val;
for (int Bit = 7; Bit >= 0; Bit--)
{
uint Mask = (uint)(-(int)(Crc & 1));
Crc = (Crc >> 1) ^ (Poly & Mask);
}
return Crc;
}
public static uint ReverseBits32(uint Value)
{
Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1);
Value = ((Value & 0xcccccccc) >> 2) | ((Value & 0x33333333) << 2);
Value = ((Value & 0xf0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f) << 4);
Value = ((Value & 0xff00ff00) >> 8) | ((Value & 0x00ff00ff) << 8);
return (Value >> 16) | (Value << 16);
}
public static ulong ReverseBits64(ulong Value)
{
Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1) | ((Value & 0x5555555555555555) << 1);
Value = ((Value & 0xcccccccccccccccc) >> 2) | ((Value & 0x3333333333333333) << 2);
Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4);
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
return (Value >> 32) | (Value << 32);
}
public static uint ReverseBytes16_32(uint Value) => (uint)ReverseBytes16_64(Value);
public static uint ReverseBytes32_32(uint Value) => (uint)ReverseBytes32_64(Value);
public static ulong ReverseBytes16_64(ulong Value) => ReverseBytes(Value, RevSize.Rev16);
public static ulong ReverseBytes32_64(ulong Value) => ReverseBytes(Value, RevSize.Rev32);
public static ulong ReverseBytes64(ulong Value) => ReverseBytes(Value, RevSize.Rev64);
private enum RevSize
{
Rev16,
Rev32,
Rev64
}
private static ulong ReverseBytes(ulong Value, RevSize Size)
{
Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
if (Size == RevSize.Rev16)
{
return Value;
}
Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
if (Size == RevSize.Rev32)
{
return Value;
}
Value = ((Value & 0xffffffff00000000) >> 32) | ((Value & 0x00000000ffffffff) << 32);
if (Size == RevSize.Rev64)
{
return Value;
}
throw new ArgumentException(nameof(Size));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int SatF32ToS32(float Value)
{
if (float.IsNaN(Value)) return 0;
return Value > int.MaxValue ? int.MaxValue :
Value < int.MinValue ? int.MinValue : (int)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static long SatF32ToS64(float Value)
{
if (float.IsNaN(Value)) return 0;
return Value > long.MaxValue ? long.MaxValue :
Value < long.MinValue ? long.MinValue : (long)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint SatF32ToU32(float Value)
{
if (float.IsNaN(Value)) return 0;
return Value > uint.MaxValue ? uint.MaxValue :
Value < uint.MinValue ? uint.MinValue : (uint)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong SatF32ToU64(float Value)
{
if (float.IsNaN(Value)) return 0;
return Value > ulong.MaxValue ? ulong.MaxValue :
Value < ulong.MinValue ? ulong.MinValue : (ulong)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int SatF64ToS32(double Value)
{
if (double.IsNaN(Value)) return 0;
return Value > int.MaxValue ? int.MaxValue :
Value < int.MinValue ? int.MinValue : (int)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static long SatF64ToS64(double Value)
{
if (double.IsNaN(Value)) return 0;
return Value > long.MaxValue ? long.MaxValue :
Value < long.MinValue ? long.MinValue : (long)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint SatF64ToU32(double Value)
{
if (double.IsNaN(Value)) return 0;
return Value > uint.MaxValue ? uint.MaxValue :
Value < uint.MinValue ? uint.MinValue : (uint)Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong SatF64ToU64(double Value)
{
if (double.IsNaN(Value)) return 0;
return Value > ulong.MaxValue ? ulong.MaxValue :
Value < ulong.MinValue ? ulong.MinValue : (ulong)Value;
}
public static long SMulHi128(long LHS, long RHS)
{
return (long)(BigInteger.Multiply(LHS, RHS) >> 64);
}
public static ulong UMulHi128(ulong LHS, ulong RHS)
{
return (ulong)(BigInteger.Multiply(LHS, RHS) >> 64);
}
public static int CountSetBits8(byte Value)
{
return ((Value >> 0) & 1) + ((Value >> 1) & 1) +
((Value >> 2) & 1) + ((Value >> 3) & 1) +
((Value >> 4) & 1) + ((Value >> 5) & 1) +
((Value >> 6) & 1) + (Value >> 7);
}
public static float MaxF(float val1, float val2)
{
if (val1 == 0.0 && val2 == 0.0)
{
if (BitConverter.SingleToInt32Bits(val1) < 0 && BitConverter.SingleToInt32Bits(val2) < 0)
return -0.0f;
return 0.0f;
}
if (val1 > val2)
return val1;
if (float.IsNaN(val1))
return val1;
return val2;
}
public static double Max(double val1, double val2)
{
if (val1 == 0.0 && val2 == 0.0)
{
if (BitConverter.DoubleToInt64Bits(val1) < 0 && BitConverter.DoubleToInt64Bits(val2) < 0)
return -0.0;
return 0.0;
}
if (val1 > val2)
return val1;
if (double.IsNaN(val1))
return val1;
return val2;
}
public static float MinF(float val1, float val2)
{
if (val1 == 0.0 && val2 == 0.0)
{
if (BitConverter.SingleToInt32Bits(val1) < 0 || BitConverter.SingleToInt32Bits(val2) < 0)
return -0.0f;
return 0.0f;
}
if (val1 < val2)
return val1;
if (float.IsNaN(val1))
return val1;
return val2;
}
public static double Min(double val1, double val2)
{
if (val1 == 0.0 && val2 == 0.0)
{
if (BitConverter.DoubleToInt64Bits(val1) < 0 || BitConverter.DoubleToInt64Bits(val2) < 0)
return -0.0;
return 0.0;
}
if (val1 < val2)
return val1;
if (double.IsNaN(val1))
return val1;
return val2;
}
public static float RoundF(float Value, int Fpcr)
{
switch ((ARoundMode)((Fpcr >> 22) & 3))
{
case ARoundMode.ToNearest: return MathF.Round (Value);
case ARoundMode.TowardsPlusInfinity: return MathF.Ceiling (Value);
case ARoundMode.TowardsMinusInfinity: return MathF.Floor (Value);
case ARoundMode.TowardsZero: return MathF.Truncate(Value);
}
throw new InvalidOperationException();
}
public static double Round(double Value, int Fpcr)
{
switch ((ARoundMode)((Fpcr >> 22) & 3))
{
case ARoundMode.ToNearest: return Math.Round (Value);
case ARoundMode.TowardsPlusInfinity: return Math.Ceiling (Value);
case ARoundMode.TowardsMinusInfinity: return Math.Floor (Value);
case ARoundMode.TowardsZero: return Math.Truncate(Value);
}
throw new InvalidOperationException();
}
public static AVec Tbl1_V64(AVec Vector, AVec Tb0)
{
return Tbl(Vector, 8, Tb0);
}
public static AVec Tbl1_V128(AVec Vector, AVec Tb0)
{
return Tbl(Vector, 16, Tb0);
}
public static AVec Tbl2_V64(AVec Vector, AVec Tb0, AVec Tb1)
{
return Tbl(Vector, 8, Tb0, Tb1);
}
public static AVec Tbl2_V128(AVec Vector, AVec Tb0, AVec Tb1)
{
return Tbl(Vector, 16, Tb0, Tb1);
}
public static AVec Tbl3_V64(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2)
{
return Tbl(Vector, 8, Tb0, Tb1, Tb2);
}
public static AVec Tbl3_V128(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2)
{
return Tbl(Vector, 16, Tb0, Tb1, Tb2);
}
public static AVec Tbl4_V64(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2, AVec Tb3)
{
return Tbl(Vector, 8, Tb0, Tb1, Tb2, Tb3);
}
public static AVec Tbl4_V128(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2, AVec Tb3)
{
return Tbl(Vector, 16, Tb0, Tb1, Tb2, Tb3);
}
private static AVec Tbl(AVec Vector, int Bytes, params AVec[] Tb)
{
AVec Res = new AVec();
byte[] Table = new byte[Tb.Length * 16];
for (int Index = 0; Index < Tb.Length; Index++)
for (int Index2 = 0; Index2 < 16; Index2++)
{
Table[Index * 16 + Index2] = (byte)VectorExtractIntZx(Tb[Index], Index2, 0);
}
for (int Index = 0; Index < Bytes; Index++)
{
byte TblIdx = (byte)VectorExtractIntZx(Vector, Index, 0);
if (TblIdx < Table.Length)
{
Res = VectorInsertInt(Table[TblIdx], Res, Index, 0);
}
}
return Res;
}
public static ulong VectorExtractIntZx(AVec Vector, int Index, int Size)
{
switch (Size)
{
case 0: return Vector.ExtractByte (Index);
case 1: return Vector.ExtractUInt16(Index);
case 2: return Vector.ExtractUInt32(Index);
case 3: return Vector.ExtractUInt64(Index);
}
throw new ArgumentOutOfRangeException(nameof(Size));
}
public static long VectorExtractIntSx(AVec Vector, int Index, int Size)
{
switch (Size)
{
case 0: return (sbyte)Vector.ExtractByte (Index);
case 1: return (short)Vector.ExtractUInt16(Index);
case 2: return (int)Vector.ExtractUInt32(Index);
case 3: return (long)Vector.ExtractUInt64(Index);
}
throw new ArgumentOutOfRangeException(nameof(Size));
}
public static float VectorExtractSingle(AVec Vector, int Index)
{
return Vector.ExtractSingle(Index);
}
public static double VectorExtractDouble(AVec Vector, int Index)
{
return Vector.ExtractDouble(Index);
}
public static AVec VectorInsertSingle(float Value, AVec Vector, int Index)
{
return AVec.InsertSingle(Vector, Index, Value);
}
public static AVec VectorInsertDouble(double Value, AVec Vector, int Index)
{
return AVec.InsertDouble(Vector, Index, Value);
}
public static AVec VectorInsertInt(ulong Value, AVec Vector, int Index, int Size)
{
switch (Size)
{
case 0: return AVec.InsertByte (Vector, Index, (byte)Value);
case 1: return AVec.InsertUInt16(Vector, Index, (ushort)Value);
case 2: return AVec.InsertUInt32(Vector, Index, (uint)Value);
case 3: return AVec.InsertUInt64(Vector, Index, (ulong)Value);
}
throw new ArgumentOutOfRangeException(nameof(Size));
}
}
}
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