feature: .NET 10 (ryubing/ryujinx!214)

See merge request ryubing/ryujinx!214
2026-05-08 06:15:48 +00:00 · 2025-11-11 12:55:36 -06:00
parent 49c70efdd5
commit 6b814fb973
171 changed files with 6011 additions and 6335 deletions
--- a/src/ARMeilleure/Instructions/SoftFloat/SoftFloat16_32.cs
+++ b/src/ARMeilleure/Instructions/SoftFloat/SoftFloat16_32.cs
@@ -0,0 +1,182 @@
+using ARMeilleure.State;
+using System;
+using System.Runtime.InteropServices;
+
+namespace ARMeilleure.Instructions
+{
+    static class SoftFloat16_32
+    {
+        [UnmanagedCallersOnly]
+        public static float FPConvert(ushort valueBits)
+        {
+            ExecutionContext context = NativeInterface.GetContext();
+
+            double real = valueBits.FPUnpackCv(out FPType type, out bool sign, context);
+
+            float result;
+
+            if (type is FPType.SNaN or FPType.QNaN)
+            {
+                if ((context.Fpcr & FPCR.Dn) != 0)
+                {
+                    result = SoftFloat32.FPDefaultNaN();
+                }
+                else
+                {
+                    result = FPConvertNaN(valueBits);
+                }
+
+                if (type == FPType.SNaN)
+                {
+                    SoftFloat.FPProcessException(FPException.InvalidOp, context);
+                }
+            }
+            else if (type == FPType.Infinity)
+            {
+                result = SoftFloat32.FPInfinity(sign);
+            }
+            else if (type == FPType.Zero)
+            {
+                result = SoftFloat32.FPZero(sign);
+            }
+            else
+            {
+                result = FPRoundCv(real, context);
+            }
+
+            return result;
+        }
+
+        private static float FPRoundCv(double real, ExecutionContext context)
+        {
+            const int MinimumExp = -126;
+
+            const int E = 8;
+            const int F = 23;
+
+            bool sign;
+            double mantissa;
+
+            if (real < 0d)
+            {
+                sign = true;
+                mantissa = -real;
+            }
+            else
+            {
+                sign = false;
+                mantissa = real;
+            }
+
+            int exponent = 0;
+
+            while (mantissa < 1d)
+            {
+                mantissa *= 2d;
+                exponent--;
+            }
+
+            while (mantissa >= 2d)
+            {
+                mantissa /= 2d;
+                exponent++;
+            }
+
+            if ((context.Fpcr & FPCR.Fz) != 0 && exponent < MinimumExp)
+            {
+                context.Fpsr |= FPSR.Ufc;
+
+                return SoftFloat32.FPZero(sign);
+            }
+
+            uint biasedExp = (uint)Math.Max(exponent - MinimumExp + 1, 0);
+
+            if (biasedExp == 0u)
+            {
+                mantissa /= Math.Pow(2d, MinimumExp - exponent);
+            }
+
+            uint intMant = (uint)Math.Floor(mantissa * Math.Pow(2d, F));
+            double error = mantissa * Math.Pow(2d, F) - (double)intMant;
+
+            if (biasedExp == 0u && (error != 0d || (context.Fpcr & FPCR.Ufe) != 0))
+            {
+                SoftFloat.FPProcessException(FPException.Underflow, context);
+            }
+
+            bool overflowToInf;
+            bool roundUp;
+
+            switch (context.Fpcr.RoundingMode)
+            {
+                case FPRoundingMode.ToNearest:
+                    roundUp = (error > 0.5d || (error == 0.5d && (intMant & 1u) == 1u));
+                    overflowToInf = true;
+                    break;
+
+                case FPRoundingMode.TowardsPlusInfinity:
+                    roundUp = (error != 0d && !sign);
+                    overflowToInf = !sign;
+                    break;
+
+                case FPRoundingMode.TowardsMinusInfinity:
+                    roundUp = (error != 0d && sign);
+                    overflowToInf = sign;
+                    break;
+
+                case FPRoundingMode.TowardsZero:
+                    roundUp = false;
+                    overflowToInf = false;
+                    break;
+
+                default:
+                    throw new ArgumentException($"Invalid rounding mode \"{context.Fpcr.RoundingMode}\".");
+            }
+
+            if (roundUp)
+            {
+                intMant++;
+
+                if (intMant == 1u << F)
+                {
+                    biasedExp = 1u;
+                }
+
+                if (intMant == 1u << (F + 1))
+                {
+                    biasedExp++;
+                    intMant >>= 1;
+                }
+            }
+
+            float result;
+
+            if (biasedExp >= (1u << E) - 1u)
+            {
+                result = overflowToInf ? SoftFloat32.FPInfinity(sign) : SoftFloat32.FPMaxNormal(sign);
+
+                SoftFloat.FPProcessException(FPException.Overflow, context);
+
+                error = 1d;
+            }
+            else
+            {
+                result = BitConverter.Int32BitsToSingle(
+                    (int)((sign ? 1u : 0u) << 31 | (biasedExp & 0xFFu) << 23 | (intMant & 0x007FFFFFu)));
+            }
+
+            if (error != 0d)
+            {
+                SoftFloat.FPProcessException(FPException.Inexact, context);
+            }
+
+            return result;
+        }
+
+        private static float FPConvertNaN(ushort valueBits)
+        {
+            return BitConverter.Int32BitsToSingle(
+                (int)(((uint)valueBits & 0x8000u) << 16 | 0x7FC00000u | ((uint)valueBits & 0x01FFu) << 13));
+        }
+    }
+}