From b20d3d24d47cee594de2d774dba356ccb14fef7c Mon Sep 17 00:00:00 2001
From: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
Date: Sat, 13 Oct 2018 01:11:16 +0200
Subject: [PATCH] Update AOpCodeSimdRegElemF.cs

---
 ChocolArm64/Decoder/AOpCodeSimdRegElemF.cs | 27 +++++++++++++++-------
 1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/ChocolArm64/Decoder/AOpCodeSimdRegElemF.cs b/ChocolArm64/Decoder/AOpCodeSimdRegElemF.cs
index e61d7093a7..e0670def45 100644
--- a/ChocolArm64/Decoder/AOpCodeSimdRegElemF.cs
+++ b/ChocolArm64/Decoder/AOpCodeSimdRegElemF.cs
@@ -8,15 +8,26 @@ namespace ChocolArm64.Decoder
 
         public AOpCodeSimdRegElemF(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
         {
-            if ((Size & 1) != 0)
+            switch ((OpCode >> 21) & 3) // sz:L
             {
-                Index = (OpCode >> 11) & 1;
-            }
-            else
-            {
-                Index = (OpCode >> 21) & 1 |
-                        (OpCode >> 10) & 2;
+                case 0: // H:0
+                    Index = (OpCode >> 10) & 2; // 0, 2
+
+                    break;
+
+                case 1: // H:1
+                    Index = (OpCode >> 10) & 2;
+                    Index++; // 1, 3
+
+                    break;
+
+                case 2: // H
+                    Index = (OpCode >> 11) & 1; // 0, 1
+
+                    break;
+
+                default: Emitter = AInstEmit.Und; return;
             }
         }
     }
-}
\ No newline at end of file
+}