JIT Sparse Function Table, by riperiperi

src/ARMeilleure/Common/AddressTablePresets.cs

@@ -0,0 +1,51 @@
+namespace ARMeilleure.Common
+{
+    public static class AddressTablePresets
+    {
+        private static readonly AddressTableLevel[] _levels64Bit =
+            new AddressTableLevel[]
+            {
+                new(31, 17),
+                new(23,  8),
+                new(15,  8),
+                new( 7,  8),
+                new( 2,  5),
+            };
+
+        private static readonly AddressTableLevel[] _levels32Bit =
+            new AddressTableLevel[]
+            {
+                new(31, 17),
+                new(23,  8),
+                new(15,  8),
+                new( 7,  8),
+                new( 1,  6),
+            };
+
+        private static readonly AddressTableLevel[] _levels64BitSparse =
+            new AddressTableLevel[]
+            {
+                new(23, 16),
+                new( 2, 21),
+            };
+
+        private static readonly AddressTableLevel[] _levels32BitSparse =
+            new AddressTableLevel[]
+            {
+                new(22, 10),
+                new( 1, 21),
+            };
+
+        public static AddressTableLevel[] GetArmPreset(bool for64Bits, bool sparse)
+        {
+            if (sparse)
+            {
+                return for64Bits ? _levels64BitSparse : _levels32BitSparse;
+            }
+            else
+            {
+                return for64Bits ? _levels64Bit : _levels32Bit;
+            }
+        }
+    }
+}