feat: Add Windows ARM64 support

Fixed the process architecture to host image machine type code.
Now ARM64 `.dll`s should be loadable by MemoryModule.

Author: trungnt2910

MemoryModule/Windows/Image.cs

@@ -11,6 +11,8 @@ public static class Image
         public const int NTSignature = 0x00004550;
         public const int FileMachinei386 = 0x14c;
         public const int FileMachineAMD64 = 0x8664;
+        public const int FileMachineARMv7 = 0x01c4;
+        public const int FileMachineARM64 = 0xaa64;
         public const int FileDll = 0x2000;
         public const int SizeOfBaseRelocation = 8;
         public const ulong OrdinalFlag64 = 0x8000000000000000;

MemoryModule/Windows/NativeAssemblyImpl.cs

@@ -186,10 +186,22 @@ internal static bool MemoryDefaultFreeLibrary(void* module, void* userdata)
         }
 #endregion
 
-        private static readonly uint HostMachine =
-            (uint)(Environment.Is64BitProcess ?
-            Image.FileMachineAMD64 :
-            Image.FileMachinei386);
+        private static readonly uint HostMachine = ((Func<uint>)(() =>
+        {
+            switch (RuntimeInformation.ProcessArchitecture)
+            {
+                case Architecture.X86:
+                    return Image.FileMachinei386;
+                case Architecture.X64:
+                    return Image.FileMachineAMD64;
+                case Architecture.Arm:
+                    return Image.FileMachineARMv7;
+                case Architecture.Arm64:
+                    return Image.FileMachineARM64;
+                default:
+                    throw new PlatformNotSupportedException();
+            }
+        }))();
 
         // Protection flags for memory pages (Executable, Readable, Writeable)
         private static readonly PageProtection[][][] ProtectionFlags = new PageProtection[][][]