316 lines
No EOL
10 KiB
C#
316 lines
No EOL
10 KiB
C#
using ChocolArm64.State;
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using ChocolArm64.Translation;
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using System;
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using System.Numerics;
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using System.Runtime.CompilerServices;
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namespace ChocolArm64.Instruction
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{
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static class ASoftFallback
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{
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public static void EmitCall(AILEmitterCtx Context, string Name64, string Name128)
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{
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bool IsSimd64 = Context.CurrOp.RegisterSize == ARegisterSize.SIMD64;
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Context.EmitCall(typeof(ASoftFallback), IsSimd64 ? Name64 : Name128);
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}
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public static void EmitCall(AILEmitterCtx Context, string MthdName)
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{
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Context.EmitCall(typeof(ASoftFallback), MthdName);
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}
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public static uint CountLeadingZeros32(uint Value) => (uint)CountLeadingZeros(Value, 32);
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public static ulong CountLeadingZeros64(ulong Value) => (ulong)CountLeadingZeros(Value, 64);
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private static ulong CountLeadingZeros(ulong Value, int Size)
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{
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int HighBit = Size - 1;
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for (int Bit = HighBit; Bit >= 0; Bit--)
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{
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if (((Value >> Bit) & 1) != 0)
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{
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return (ulong)(HighBit - Bit);
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}
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}
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return (ulong)Size;
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}
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public static uint ReverseBits32(uint Value)
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{
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Value = ((Value & 0xaaaaaaaa) >> 1) | ((Value & 0x55555555) << 1);
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Value = ((Value & 0xcccccccc) >> 2) | ((Value & 0x33333333) << 2);
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Value = ((Value & 0xf0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f) << 4);
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Value = ((Value & 0xff00ff00) >> 8) | ((Value & 0x00ff00ff) << 8);
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return (Value >> 16) | (Value << 16);
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}
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public static ulong ReverseBits64(ulong Value)
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{
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Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1) | ((Value & 0x5555555555555555) << 1);
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Value = ((Value & 0xcccccccccccccccc) >> 2) | ((Value & 0x3333333333333333) << 2);
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Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4);
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Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
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Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
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return (Value >> 32) | (Value << 32);
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}
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public static uint ReverseBytes16_32(uint Value) => (uint)ReverseBytes16_64(Value);
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public static uint ReverseBytes32_32(uint Value) => (uint)ReverseBytes32_64(Value);
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public static ulong ReverseBytes16_64(ulong Value) => ReverseBytes(Value, RevSize.Rev16);
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public static ulong ReverseBytes32_64(ulong Value) => ReverseBytes(Value, RevSize.Rev32);
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public static ulong ReverseBytes64(ulong Value) => ReverseBytes(Value, RevSize.Rev64);
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private enum RevSize
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{
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Rev16,
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Rev32,
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Rev64
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}
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private static ulong ReverseBytes(ulong Value, RevSize Size)
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{
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Value = ((Value & 0xff00ff00ff00ff00) >> 8) | ((Value & 0x00ff00ff00ff00ff) << 8);
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if (Size == RevSize.Rev16)
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{
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return Value;
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}
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Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16);
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if (Size == RevSize.Rev32)
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{
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return Value;
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}
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Value = ((Value & 0xffffffff00000000) >> 32) | ((Value & 0x00000000ffffffff) << 32);
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if (Size == RevSize.Rev64)
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{
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return Value;
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}
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throw new ArgumentException(nameof(Size));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int SatF32ToS32(float Value)
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{
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if (float.IsNaN(Value)) return 0;
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return Value > int.MaxValue ? int.MaxValue :
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Value < int.MinValue ? int.MinValue : (int)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static long SatF32ToS64(float Value)
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{
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if (float.IsNaN(Value)) return 0;
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return Value > long.MaxValue ? long.MaxValue :
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Value < long.MinValue ? long.MinValue : (long)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static uint SatF32ToU32(float Value)
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{
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if (float.IsNaN(Value)) return 0;
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return Value > uint.MaxValue ? uint.MaxValue :
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Value < uint.MinValue ? uint.MinValue : (uint)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static ulong SatF32ToU64(float Value)
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{
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if (float.IsNaN(Value)) return 0;
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return Value > ulong.MaxValue ? ulong.MaxValue :
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Value < ulong.MinValue ? ulong.MinValue : (ulong)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int SatF64ToS32(double Value)
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{
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if (double.IsNaN(Value)) return 0;
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return Value > int.MaxValue ? int.MaxValue :
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Value < int.MinValue ? int.MinValue : (int)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static long SatF64ToS64(double Value)
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{
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if (double.IsNaN(Value)) return 0;
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return Value > long.MaxValue ? long.MaxValue :
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Value < long.MinValue ? long.MinValue : (long)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static uint SatF64ToU32(double Value)
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{
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if (double.IsNaN(Value)) return 0;
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return Value > uint.MaxValue ? uint.MaxValue :
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Value < uint.MinValue ? uint.MinValue : (uint)Value;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static ulong SatF64ToU64(double Value)
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{
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if (double.IsNaN(Value)) return 0;
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return Value > ulong.MaxValue ? ulong.MaxValue :
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Value < ulong.MinValue ? ulong.MinValue : (ulong)Value;
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}
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public static long SMulHi128(long LHS, long RHS)
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{
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return (long)(BigInteger.Multiply(LHS, RHS) >> 64);
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}
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public static ulong UMulHi128(ulong LHS, ulong RHS)
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{
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return (ulong)(BigInteger.Multiply(LHS, RHS) >> 64);
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}
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public static int CountSetBits8(byte Value)
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{
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return (Value >> 0) & 1 + (Value >> 1) & 1 +
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(Value >> 2) & 1 + (Value >> 3) & 1 +
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(Value >> 4) & 1 + (Value >> 5) & 1 +
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(Value >> 6) & 1 + (Value >> 7);
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}
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public static AVec Tbl1_V64(AVec Vector, AVec Tb0)
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{
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return Tbl(Vector, 8, Tb0);
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}
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public static AVec Tbl1_V128(AVec Vector, AVec Tb0)
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{
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return Tbl(Vector, 16, Tb0);
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}
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public static AVec Tbl2_V64(AVec Vector, AVec Tb0, AVec Tb1)
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{
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return Tbl(Vector, 8, Tb0, Tb1);
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}
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public static AVec Tbl2_V128(AVec Vector, AVec Tb0, AVec Tb1)
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{
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return Tbl(Vector, 16, Tb0, Tb1);
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}
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public static AVec Tbl3_V64(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2)
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{
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return Tbl(Vector, 8, Tb0, Tb1, Tb2);
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}
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public static AVec Tbl3_V128(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2)
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{
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return Tbl(Vector, 16, Tb0, Tb1, Tb2);
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}
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public static AVec Tbl4_V64(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2, AVec Tb3)
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{
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return Tbl(Vector, 8, Tb0, Tb1, Tb2, Tb3);
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}
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public static AVec Tbl4_V128(AVec Vector, AVec Tb0, AVec Tb1, AVec Tb2, AVec Tb3)
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{
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return Tbl(Vector, 16, Tb0, Tb1, Tb2, Tb3);
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}
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private static AVec Tbl(AVec Vector, int Bytes, params AVec[] Tb)
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{
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AVec Res = new AVec();
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byte[] Table = new byte[Tb.Length * 16];
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for (int Index = 0; Index < Tb.Length; Index++)
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for (int Index2 = 0; Index2 < 16; Index2++)
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{
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Table[Index * 16 + Index2] = (byte)VectorExtractIntZx(Tb[Index], Index2, 0);
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}
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for (int Index = 0; Index < Bytes; Index++)
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{
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byte TblIdx = (byte)VectorExtractIntZx(Vector, Index, 0);
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if (TblIdx < Table.Length)
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{
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Res = VectorInsertInt(Table[TblIdx], Res, Index, 0);
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}
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}
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return Res;
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}
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public static ulong VectorExtractIntZx(AVec Vector, int Index, int Size)
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{
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switch (Size)
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{
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case 0: return Vector.ExtractByte (Index);
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case 1: return Vector.ExtractUInt16(Index);
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case 2: return Vector.ExtractUInt32(Index);
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case 3: return Vector.ExtractUInt64(Index);
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}
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throw new ArgumentOutOfRangeException(nameof(Size));
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}
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public static long VectorExtractIntSx(AVec Vector, int Index, int Size)
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{
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switch (Size)
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{
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case 0: return (sbyte)Vector.ExtractByte (Index);
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case 1: return (short)Vector.ExtractUInt16(Index);
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case 2: return (int)Vector.ExtractUInt32(Index);
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case 3: return (long)Vector.ExtractUInt64(Index);
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}
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throw new ArgumentOutOfRangeException(nameof(Size));
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}
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public static float VectorExtractSingle(AVec Vector, int Index)
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{
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return Vector.ExtractSingle(Index);
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}
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public static double VectorExtractDouble(AVec Vector, int Index)
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{
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return Vector.ExtractDouble(Index);
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}
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public static AVec VectorInsertSingle(float Value, AVec Vector, int Index)
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{
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return AVec.InsertSingle(Vector, Index, Value);
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}
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public static AVec VectorInsertDouble(double Value, AVec Vector, int Index)
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{
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return AVec.InsertDouble(Vector, Index, Value);
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}
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public static AVec VectorInsertInt(ulong Value, AVec Vector, int Index, int Size)
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{
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switch (Size)
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{
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case 0: return AVec.InsertByte (Vector, Index, (byte)Value);
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case 1: return AVec.InsertUInt16(Vector, Index, (ushort)Value);
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case 2: return AVec.InsertUInt32(Vector, Index, (uint)Value);
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case 3: return AVec.InsertUInt64(Vector, Index, (ulong)Value);
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}
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throw new ArgumentOutOfRangeException(nameof(Size));
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}
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}
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} |