Split main project into core,graphics and chocolarm4 subproject (#29)

1 files changed, 49 insertions, 0 deletions

diff --git a/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs b/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs
new file mode 100644
index 00000000..9ea979ba
--- /dev/null
+++ b/ChocolArm64/Decoder/AOpCodeSimdMemMs.cs
@@ -0,0 +1,49 @@
+using ChocolArm64.Instruction;
+using ChocolArm64.State;
+
+namespace ChocolArm64.Decoder
+{
+    class AOpCodeSimdMemMs : AOpCodeMemReg, IAOpCodeSimd
+    {
+        public int  Reps   { get; private set; }
+        public int  SElems { get; private set; }
+        public int  Elems  { get; private set; }
+        public bool WBack  { get; private set; }
+
+        public AOpCodeSimdMemMs(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
+        {
+            switch ((OpCode >> 12) & 0xf)
+            {
+                case 0b0000: Reps = 1; SElems = 4; break;
+                case 0b0010: Reps = 4; SElems = 1; break;
+                case 0b0100: Reps = 1; SElems = 3; break;
+                case 0b0110: Reps = 3; SElems = 1; break;
+                case 0b0111: Reps = 1; SElems = 1; break;
+                case 0b1000: Reps = 1; SElems = 2; break;
+                case 0b1010: Reps = 2; SElems = 1; break;
+
+                default: Inst = AInst.Undefined; return;
+            }
+
+            Size  =  (OpCode >> 10) & 0x3;
+            WBack = ((OpCode >> 23) & 0x1) != 0;
+
+            bool Q = ((OpCode >> 30) & 1) != 0;
+
+            if (!Q && Size == 3 && SElems != 1)
+            {
+                Inst = AInst.Undefined;
+
+                return;
+            }
+
+            Extend64 = false;
+
+            RegisterSize = Q
+                ? ARegisterSize.SIMD128
+                : ARegisterSize.SIMD64;
+
+            Elems = (GetBitsCount() >> 3) >> Size;
+        }
+    }
+}
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