From 6cc187da594a620f89df38ff537511138b03c9dc Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 1 Sep 2020 17:02:23 -0300
Subject: SIMD&FP load/store with scale > 4 should be undefined (#1522)

* SIMD&FP load/store with scale > 4 should be undefined

* Catch more invalid encodings for FP&SIMD LDR/STR (reg variant)

* Set PTC version to PR number
---
 ARMeilleure/Decoders/OpCodeSimdMemReg.cs | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'ARMeilleure/Decoders/OpCodeSimdMemReg.cs')

diff --git a/ARMeilleure/Decoders/OpCodeSimdMemReg.cs b/ARMeilleure/Decoders/OpCodeSimdMemReg.cs
index 7b783d63..cad8ca63 100644
--- a/ARMeilleure/Decoders/OpCodeSimdMemReg.cs
+++ b/ARMeilleure/Decoders/OpCodeSimdMemReg.cs
@@ -6,6 +6,13 @@ namespace ARMeilleure.Decoders
         {
             Size |= (opCode >> 21) & 4;
 
+            if (Size > 4)
+            {
+                Instruction = InstDescriptor.Undefined;
+
+                return;
+            }
+
             Extend64 = false;
         }
     }
-- 
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