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/Cache/JitSupportDarwin.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+
+namespace Ryujinx.Cpu.LightningJit.Cache
+{
+    [SupportedOSPlatform("macos")]
+    static partial class JitSupportDarwin
+    {
+        [LibraryImport("libarmeilleure-jitsupport", EntryPoint = "armeilleure_jit_memcpy")]
+        public static partial void Copy(IntPtr dst, IntPtr src, ulong n);
+
+        [LibraryImport("libc", EntryPoint = "sys_icache_invalidate", SetLastError = true)]
+        public static partial void SysIcacheInvalidate(IntPtr start, IntPtr len);
+    }
+}