Fix cpu issue with cmp optimization, add HINT and FRINTX (scalar) instructions, fix for NvFlinger sometimes missing free buffers

3 files changed, 57 insertions, 0 deletions

diff --git a/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs b/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
index 6665f219..e1fd56e0 100644
--- a/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
+++ b/ChocolArm64/Instruction/AInstEmitSimdArithmetic.cs
@@ -265,6 +265,32 @@ namespace ChocolArm64.Instruction
             });
         }
 
+        public static void Frintx_S(AILEmitterCtx Context)
+        {
+            AOpCodeSimd Op = (AOpCodeSimd)Context.CurrOp;
+
+            EmitVectorExtractF(Context, Op.Rn, 0, Op.Size);
+
+            Context.EmitLdarg(ATranslatedSub.StateArgIdx);
+
+            Context.EmitCallPropGet(typeof(AThreadState), nameof(AThreadState.Fpcr));
+
+            if (Op.Size == 0)
+            {
+                ASoftFallback.EmitCall(Context, nameof(ASoftFallback.RoundF));
+            }
+            else if (Op.Size == 1)
+            {
+                ASoftFallback.EmitCall(Context, nameof(ASoftFallback.Round));
+            }
+            else
+            {
+                throw new InvalidOperationException();
+            }
+
+            EmitScalarSetF(Context, Op.Rd, Op.Size);
+        }
+
         public static void Fsqrt_S(AILEmitterCtx Context)
         {
             EmitScalarUnaryOpF(Context, () =>
diff --git a/ChocolArm64/Instruction/AInstEmitSystem.cs b/ChocolArm64/Instruction/AInstEmitSystem.cs
index 6754be7a..f9d18602 100644
--- a/ChocolArm64/Instruction/AInstEmitSystem.cs
+++ b/ChocolArm64/Instruction/AInstEmitSystem.cs
@@ -9,6 +9,11 @@ namespace ChocolArm64.Instruction
 {
     static partial class AInstEmit
     {
+        public static void Hint(AILEmitterCtx Context)
+        {
+            //Execute as no-op.
+        }
+
         public static void Mrs(AILEmitterCtx Context)
         {
             AOpCodeSystem Op = (AOpCodeSystem)Context.CurrOp;
diff --git a/ChocolArm64/Instruction/ASoftFallback.cs b/ChocolArm64/Instruction/ASoftFallback.cs
index a57966ba..5127182d 100644
--- a/ChocolArm64/Instruction/ASoftFallback.cs
+++ b/ChocolArm64/Instruction/ASoftFallback.cs
@@ -189,6 +189,32 @@ namespace ChocolArm64.Instruction
                    (Value >> 6) & 1 + (Value >> 7);
         }
 
+        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);