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https://github.com/Ryujinx/Ryujinx.git
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* Initial intrinsics support * Update tests to work with the new Vector128 type and intrinsics * Drop SSE4.1 requirement * Fix copy-paste mistake
164 lines
5.6 KiB
C#
164 lines
5.6 KiB
C#
using ChocolArm64.Translation;
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using System;
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using System.Numerics;
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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 MthdName)
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{
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Context.EmitCall(typeof(ASoftFallback), MthdName);
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}
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public static ulong CountLeadingSigns(ulong Value, int Size)
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{
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return CountLeadingZeros((Value >> 1) ^ Value, Size - 1);
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}
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public 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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private const uint Crc32RevPoly = 0xedb88320;
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private const uint Crc32cRevPoly = 0x82f63b78;
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public static uint Crc32b(uint Crc, byte Val) => Crc32 (Crc, Crc32RevPoly, Val);
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public static uint Crc32h(uint Crc, ushort Val) => Crc32h(Crc, Crc32RevPoly, Val);
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public static uint Crc32w(uint Crc, uint Val) => Crc32w(Crc, Crc32RevPoly, Val);
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public static uint Crc32x(uint Crc, ulong Val) => Crc32x(Crc, Crc32RevPoly, Val);
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public static uint Crc32cb(uint Crc, byte Val) => Crc32 (Crc, Crc32cRevPoly, Val);
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public static uint Crc32ch(uint Crc, ushort Val) => Crc32h(Crc, Crc32cRevPoly, Val);
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public static uint Crc32cw(uint Crc, uint Val) => Crc32w(Crc, Crc32cRevPoly, Val);
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public static uint Crc32cx(uint Crc, ulong Val) => Crc32x(Crc, Crc32cRevPoly, Val);
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private static uint Crc32h(uint Crc, uint Poly, ushort Val)
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{
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Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
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return Crc;
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}
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private static uint Crc32w(uint Crc, uint Poly, uint Val)
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{
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Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 16));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 24));
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return Crc;
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}
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private static uint Crc32x(uint Crc, uint Poly, ulong Val)
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{
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Crc = Crc32(Crc, Poly, (byte)(Val >> 0));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 8));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 16));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 24));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 32));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 40));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 48));
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Crc = Crc32(Crc, Poly, (byte)(Val >> 56));
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return Crc;
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}
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private static uint Crc32(uint Crc, uint Poly, byte Val)
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{
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Crc ^= Val;
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for (int Bit = 7; Bit >= 0; Bit--)
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{
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uint Mask = (uint)(-(int)(Crc & 1));
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Crc = (Crc >> 1) ^ (Poly & Mask);
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}
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return Crc;
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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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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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}
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}
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