Implement a new JIT for Arm devices (#6057)

* Implement a new JIT for Arm devices

* Auto-format

* Make a lot of Assembler members read-only

* More read-only

* Fix more warnings

* ObjectDisposedException.ThrowIf

* New JIT cache for platforms that enforce W^X, currently unused

* Remove unused using

* Fix assert

* Pass memory manager type around

* Safe memory manager mode support + other improvements

* Actual safe memory manager mode masking support

* PR feedback

src/Ryujinx.Cpu/LightningJit/CodeGen/Arm64/AbiConstants.cs

@@ -0,0 +1,15 @@
+namespace Ryujinx.Cpu.LightningJit.CodeGen.Arm64
+{
+    static class AbiConstants
+    {
+        // Some of those register have specific roles and can't be used as general purpose registers.
+        // X18 - Reserved for platform specific usage.
+        // X29 - Frame pointer.
+        // X30 - Return address.
+        // X31 - Not an actual register, in some cases maps to SP, and in others to ZR.
+        public const uint ReservedRegsMask = (1u << 18) | (1u << 29) | (1u << 30) | (1u << 31);
+
+        public const uint GprCalleeSavedRegsMask = 0x1ff80000; // X19 to X28
+        public const uint FpSimdCalleeSavedRegsMask = 0xff00; // D8 to D15
+    }
+}