Merge pull request #21990 from neikeq/howwouldyounamethisbranch

C#/Mono fixes and enhancements

36 files changed, 1975 insertions, 964 deletions

diff --git a/modules/mono/SCsub b/modules/mono/SCsub
index f3cf4c9c5d..7239506ce1 100644
--- a/modules/mono/SCsub
+++ b/modules/mono/SCsub
@@ -7,21 +7,24 @@ env_mono = env_modules.Clone()
 
 # TODO move functions to their own modules
 
-def make_cs_files_header(src, dst):
+def make_cs_files_header(src, dst, version_dst):
     from compat import byte_to_str
 
     with open(dst, 'w') as header:
-        header.write('/* This is an automatically generated file; DO NOT EDIT! OK THX */\n')
-        header.write('#ifndef _CS_FILES_DATA_H\n')
-        header.write('#define _CS_FILES_DATA_H\n\n')
+        header.write('/* THIS FILE IS GENERATED DO NOT EDIT */\n')
+        header.write('#ifndef CS_COMPRESSED_H\n')
+        header.write('#define CS_COMPRESSED_H\n\n')
+        header.write('#ifdef TOOLS_ENABLED\n\n')
         header.write('#include "map.h"\n')
         header.write('#include "ustring.h"\n')
         inserted_files = ''
         import os
         latest_mtime = 0
+        cs_file_count = 0
         for root, _, files in os.walk(src):
             files = [f for f in files if f.endswith('.cs')]
             for file in files:
+                cs_file_count += 1
                 filepath = os.path.join(root, file)
                 filepath_src_rel = os.path.relpath(filepath, src)
                 mtime = os.path.getmtime(filepath)
@@ -31,8 +34,10 @@ def make_cs_files_header(src, dst):
                     decomp_size = len(buf)
                     import zlib
                     buf = zlib.compress(buf)
-                    name = os.path.splitext(os.path.normpath(filepath_src_rel))[0].strip(os.sep).replace(os.sep, '_').replace('.', '_dotto_')
-                    header.write('\nstatic const int _cs_' + name + '_compressed_size = ' + str(len(buf)) + ';\n')
+                    name = str(cs_file_count)
+                    header.write('\n')
+                    header.write('// ' + filepath_src_rel + '\n')
+                    header.write('static const int _cs_' + name + '_compressed_size = ' + str(len(buf)) + ';\n')
                     header.write('static const int _cs_' + name + '_uncompressed_size = ' + str(decomp_size) + ';\n')
                     header.write('static const unsigned char _cs_' + name + '_compressed[] = { ')
                     for i, buf_idx in enumerate(range(len(buf))):
@@ -44,8 +49,6 @@ def make_cs_files_header(src, dst):
                                         '_cs_' + name + '_uncompressed_size, ' \
                                         '_cs_' + name + '_compressed));\n'
                     header.write(' };\n')
-        glue_version = int(latest_mtime) # The latest modified time will do for now
-        header.write('\n#define CS_GLUE_VERSION UINT32_C(' + str(glue_version) + ')\n')
         header.write('\nstruct CompressedFile\n' '{\n'
             '\tint compressed_size;\n' '\tint uncompressed_size;\n' '\tconst unsigned char* data;\n'
             '\n\tCompressedFile(int p_comp_size, int p_uncomp_size, const unsigned char* p_data)\n'
@@ -53,17 +56,28 @@ def make_cs_files_header(src, dst):
             '\t\tdata = p_data;\n' '\t}\n' '\n\tCompressedFile() {}\n' '};\n'
             '\nvoid get_compressed_files(Map<String, CompressedFile>& r_files)\n' '{\n' + inserted_files + '}\n'
             )
-        header.write('#endif // _CS_FILES_DATA_H')
+        header.write('\n#endif // TOOLS_ENABLED\n')
+        header.write('\n#endif // CS_COMPRESSED_H\n')
+
+        glue_version = int(latest_mtime) # The latest modified time will do for now
+
+        with open(version_dst, 'w') as version_header:
+            version_header.write('/* THIS FILE IS GENERATED DO NOT EDIT */\n')
+            version_header.write('#ifndef CS_GLUE_VERSION_H\n')
+            version_header.write('#define CS_GLUE_VERSION_H\n\n')
+            version_header.write('#define CS_GLUE_VERSION UINT32_C(' + str(glue_version) + ')\n')
+            version_header.write('\n#endif // CS_GLUE_VERSION_H\n')
 
 
 env_mono.add_source_files(env.modules_sources, '*.cpp')
+env_mono.add_source_files(env.modules_sources, 'glue/*.cpp')
 env_mono.add_source_files(env.modules_sources, 'mono_gd/*.cpp')
 env_mono.add_source_files(env.modules_sources, 'utils/*.cpp')
 
 if env['tools']:
     env_mono.add_source_files(env.modules_sources, 'editor/*.cpp')
-    # NOTE: It is safe to generate this file here, since this is still execute serially
-    make_cs_files_header('glue/cs_files', 'glue/cs_compressed.gen.h')
+    # NOTE: It is safe to generate this file here, since this is still executed serially
+    make_cs_files_header('glue/cs_files', 'glue/cs_compressed.gen.h', 'glue/cs_glue_version.gen.h')
 
 vars = Variables()
 vars.Add(BoolVariable('mono_glue', 'Build with the mono glue sources', True))
@@ -72,9 +86,7 @@ vars.Update(env_mono)
 
 # Glue sources
 if env_mono['mono_glue']:
-    env_mono.add_source_files(env.modules_sources, 'glue/*.cpp')
-else:
-    env_mono.Append(CPPDEFINES=['MONO_GLUE_DISABLED'])
+    env_mono.Append(CPPDEFINES=['MONO_GLUE_ENABLED'])
 
 if ARGUMENTS.get('yolo_copy', False):
     env_mono.Append(CPPDEFINES=['YOLO_COPY'])
diff --git a/modules/mono/csharp_script.cpp b/modules/mono/csharp_script.cpp
index d2a861dbe8..a7899257b5 100644
--- a/modules/mono/csharp_script.cpp
+++ b/modules/mono/csharp_script.cpp
@@ -107,7 +107,7 @@ void CSharpLanguage::init() {
 	gdmono = memnew(GDMono);
 	gdmono->initialize();
 
-#ifdef MONO_GLUE_DISABLED
+#ifndef MONO_GLUE_ENABLED
 	WARN_PRINT("This binary is built with `mono_glue=no` and cannot be used for scripting");
 #endif
 
@@ -138,7 +138,7 @@ void CSharpLanguage::finish() {
 #endif
 
 	// Release gchandle bindings before finalizing mono runtime
-	gchandle_bindings.clear();
+	script_bindings.clear();
 
 	if (gdmono) {
 		memdelete(gdmono);
@@ -551,22 +551,22 @@ Vector<ScriptLanguage::StackInfo> CSharpLanguage::stack_trace_get_info(MonoObjec
 
 void CSharpLanguage::frame() {
 
-	const Ref<MonoGCHandle> &task_scheduler_handle = GDMonoUtils::mono_cache.task_scheduler_handle;
+	if (gdmono && gdmono->is_runtime_initialized() && gdmono->get_core_api_assembly() != NULL) {
+		const Ref<MonoGCHandle> &task_scheduler_handle = GDMonoUtils::mono_cache.task_scheduler_handle;
 
-	if (task_scheduler_handle.is_valid()) {
-		MonoObject *task_scheduler = task_scheduler_handle->get_target();
+		if (task_scheduler_handle.is_valid()) {
+			MonoObject *task_scheduler = task_scheduler_handle->get_target();
 
-		if (task_scheduler) {
-			GDMonoUtils::GodotTaskScheduler_Activate thunk = CACHED_METHOD_THUNK(GodotTaskScheduler, Activate);
+			if (task_scheduler) {
+				GDMonoUtils::GodotTaskScheduler_Activate thunk = CACHED_METHOD_THUNK(GodotTaskScheduler, Activate);
 
-			ERR_FAIL_NULL(thunk);
+				MonoException *exc = NULL;
+				thunk(task_scheduler, (MonoObject **)&exc);
 
-			MonoException *exc = NULL;
-			thunk(task_scheduler, (MonoObject **)&exc);
-
-			if (exc) {
-				GDMonoUtils::debug_unhandled_exception(exc);
-				_UNREACHABLE_();
+				if (exc) {
+					GDMonoUtils::debug_unhandled_exception(exc);
+					_UNREACHABLE_();
+				}
 			}
 		}
 	}
@@ -892,6 +892,48 @@ void CSharpLanguage::set_language_index(int p_idx) {
 	lang_idx = p_idx;
 }
 
+void CSharpLanguage::release_script_gchandle(Ref<MonoGCHandle> &p_gchandle) {
+
+	if (!p_gchandle->is_released()) { // Do not locking unnecessarily
+#ifndef NO_THREADS
+		get_singleton()->script_gchandle_release_lock->lock();
+#endif
+
+		p_gchandle->release();
+
+#ifndef NO_THREADS
+		get_singleton()->script_gchandle_release_lock->unlock();
+#endif
+	}
+}
+
+void CSharpLanguage::release_script_gchandle(MonoObject *p_pinned_expected_obj, Ref<MonoGCHandle> &p_gchandle) {
+
+	uint32_t pinned_gchandle = MonoGCHandle::new_strong_handle_pinned(p_pinned_expected_obj); // we might lock after this, so pin it
+
+	if (!p_gchandle->is_released()) { // Do not locking unnecessarily
+#ifndef NO_THREADS
+		get_singleton()->script_gchandle_release_lock->lock();
+#endif
+
+		MonoObject *target = p_gchandle->get_target();
+
+		// We release the gchandle if it points to the MonoObject* we expect (otherwise it was
+		// already released and could have been replaced) or if we can't get its target MonoObject*
+		// (which doesn't necessarily mean it was released, and we want it released in order to
+		// avoid locking other threads unnecessarily).
+		if (target == p_pinned_expected_obj || target == NULL) {
+			p_gchandle->release();
+		}
+
+#ifndef NO_THREADS
+		get_singleton()->script_gchandle_release_lock->unlock();
+#endif
+	}
+
+	MonoGCHandle::free_handle(pinned_gchandle);
+}
+
 CSharpLanguage::CSharpLanguage() {
 
 	ERR_FAIL_COND(singleton);
@@ -904,9 +946,11 @@ CSharpLanguage::CSharpLanguage() {
 #ifdef NO_THREADS
 	lock = NULL;
 	gchandle_bind_lock = NULL;
+	script_gchandle_release_lock = NULL;
 #else
 	lock = Mutex::create();
 	script_bind_lock = Mutex::create();
+	script_gchandle_release_lock = Mutex::create();
 #endif
 
 	lang_idx = -1;
@@ -926,6 +970,11 @@ CSharpLanguage::~CSharpLanguage() {
 		script_bind_lock = NULL;
 	}
 
+	if (script_gchandle_release_lock) {
+		memdelete(script_gchandle_release_lock);
+		script_gchandle_release_lock = NULL;
+	}
+
 	singleton = NULL;
 }
 
@@ -954,30 +1003,34 @@ void *CSharpLanguage::alloc_instance_binding_data(Object *p_object) {
 
 	ERR_FAIL_NULL_V(mono_object, NULL);
 
-	// Tie managed to unmanaged
-	Reference *ref = Object::cast_to<Reference>(p_object);
-
-	if (ref) {
-		// Unsafe refcount increment. The managed instance also counts as a reference.
-		// This way if the unmanaged world has no references to our owner
-		// but the managed instance is alive, the refcount will be 1 instead of 0.
-		// See: _GodotSharp::_dispose_object(Object *p_object)
-
-		ref->reference();
-	}
+	CSharpScriptBinding script_binding;
 
-	Ref<MonoGCHandle> gchandle = MonoGCHandle::create_strong(mono_object);
+	script_binding.type_name = type_name;
+	script_binding.wrapper_class = type_class; // cache
+	script_binding.gchandle = MonoGCHandle::create_strong(mono_object);
 
 #ifndef NO_THREADS
 	script_bind_lock->lock();
 #endif
 
-	void *data = (void *)gchandle_bindings.insert(p_object, gchandle);
+	void *data = (void *)script_bindings.insert(p_object, script_binding);
 
 #ifndef NO_THREADS
 	script_bind_lock->unlock();
 #endif
 
+	// Tie managed to unmanaged
+	Reference *ref = Object::cast_to<Reference>(p_object);
+
+	if (ref) {
+		// Unsafe refcount increment. The managed instance also counts as a reference.
+		// This way if the unmanaged world has no references to our owner
+		// but the managed instance is alive, the refcount will be 1 instead of 0.
+		// See: godot_icall_Reference_Dtor(MonoObject *p_obj, Object *p_ptr)
+
+		ref->reference();
+	}
+
 	return data;
 }
 
@@ -985,7 +1038,7 @@ void CSharpLanguage::free_instance_binding_data(void *p_data) {
 
 	if (GDMono::get_singleton() == NULL) {
 #ifdef DEBUG_ENABLED
-		CRASH_COND(!gchandle_bindings.empty());
+		CRASH_COND(!script_bindings.empty());
 #endif
 		// Mono runtime finalized, all the gchandle bindings were already released
 		return;
@@ -998,15 +1051,15 @@ void CSharpLanguage::free_instance_binding_data(void *p_data) {
 	script_bind_lock->lock();
 #endif
 
-	Map<Object *, Ref<MonoGCHandle> >::Element *data = (Map<Object *, Ref<MonoGCHandle> >::Element *)p_data;
+	Map<Object *, CSharpScriptBinding>::Element *data = (Map<Object *, CSharpScriptBinding>::Element *)p_data;
 
 	// Set the native instance field to IntPtr.Zero, if not yet garbage collected
-	MonoObject *mono_object = data->value()->get_target();
+	MonoObject *mono_object = data->value().gchandle->get_target();
 	if (mono_object) {
 		CACHED_FIELD(GodotObject, ptr)->set_value_raw(mono_object, NULL);
 	}
 
-	gchandle_bindings.erase(data);
+	script_bindings.erase(data);
 
 #ifndef NO_THREADS
 	script_bind_lock->unlock();
@@ -1024,7 +1077,7 @@ void CSharpLanguage::refcount_incremented_instance_binding(Object *p_object) {
 	void *data = p_object->get_script_instance_binding(get_language_index());
 	if (!data)
 		return;
-	Ref<MonoGCHandle> &gchandle = ((Map<Object *, Ref<MonoGCHandle> >::Element *)data)->get();
+	Ref<MonoGCHandle> &gchandle = ((Map<Object *, CSharpScriptBinding>::Element *)data)->get().gchandle;
 
 	if (ref_owner->reference_get_count() > 1 && gchandle->is_weak()) { // The managed side also holds a reference, hence 1 instead of 0
 		// The reference count was increased after the managed side was the only one referencing our owner.
@@ -1036,7 +1089,7 @@ void CSharpLanguage::refcount_incremented_instance_binding(Object *p_object) {
 			return; // Called after the managed side was collected, so nothing to do here
 
 		// Release the current weak handle and replace it with a strong handle.
-		uint32_t strong_gchandle = MonoGCHandle::make_strong_handle(target);
+		uint32_t strong_gchandle = MonoGCHandle::new_strong_handle(target);
 		gchandle->release();
 		gchandle->set_handle(strong_gchandle, MonoGCHandle::STRONG_HANDLE);
 	}
@@ -1055,7 +1108,7 @@ bool CSharpLanguage::refcount_decremented_instance_binding(Object *p_object) {
 	void *data = p_object->get_script_instance_binding(get_language_index());
 	if (!data)
 		return refcount == 0;
-	Ref<MonoGCHandle> &gchandle = ((Map<Object *, Ref<MonoGCHandle> >::Element *)data)->get();
+	Ref<MonoGCHandle> &gchandle = ((Map<Object *, CSharpScriptBinding>::Element *)data)->get().gchandle;
 
 	if (refcount == 1 && !gchandle->is_weak()) { // The managed side also holds a reference, hence 1 instead of 0
 		// If owner owner is no longer referenced by the unmanaged side,
@@ -1066,7 +1119,7 @@ bool CSharpLanguage::refcount_decremented_instance_binding(Object *p_object) {
 			return refcount == 0; // Called after the managed side was collected, so nothing to do here
 
 		// Release the current strong handle and replace it with a weak handle.
-		uint32_t weak_gchandle = MonoGCHandle::make_weak_handle(target);
+		uint32_t weak_gchandle = MonoGCHandle::new_weak_handle(target);
 		gchandle->release();
 		gchandle->set_handle(weak_gchandle, MonoGCHandle::WEAK_HANDLE);
 
@@ -1096,9 +1149,8 @@ CSharpInstance *CSharpInstance::create_for_managed_type(Object *p_owner, CSharpS
 }
 
 MonoObject *CSharpInstance::get_mono_object() const {
-#ifdef DEBUG_ENABLED
-	CRASH_COND(gchandle.is_null());
-#endif
+
+	ERR_FAIL_COND_V(gchandle.is_null(), NULL);
 	return gchandle->get_target();
 }
 
@@ -1326,10 +1378,12 @@ void CSharpInstance::call_multilevel_reversed(const StringName &p_method, const
 	call_multilevel(p_method, p_args, p_argcount);
 }
 
-void CSharpInstance::_reference_owner_unsafe() {
+bool CSharpInstance::_reference_owner_unsafe() {
 
 #ifdef DEBUG_ENABLED
 	CRASH_COND(!base_ref);
+	CRASH_COND(owner == NULL);
+	CRASH_COND(unsafe_referenced); // already referenced
 #endif
 
 	// Unsafe refcount increment. The managed instance also counts as a reference.
@@ -1338,36 +1392,107 @@ void CSharpInstance::_reference_owner_unsafe() {
 	// See: _unreference_owner_unsafe()
 
 	// May not me referenced yet, so we must use init_ref() instead of reference()
-	Object::cast_to<Reference>(owner)->init_ref();
+	bool success = Object::cast_to<Reference>(owner)->init_ref();
+	unsafe_referenced = success;
+	return success;
 }
 
-void CSharpInstance::_unreference_owner_unsafe() {
+bool CSharpInstance::_unreference_owner_unsafe() {
 
 #ifdef DEBUG_ENABLED
 	CRASH_COND(!base_ref);
+	CRASH_COND(owner == NULL);
 #endif
 
+	if (!unsafe_referenced)
+		return false; // Already unreferenced
+
 	// Called from CSharpInstance::mono_object_disposed() or ~CSharpInstance()
 
 	// Unsafe refcount decrement. The managed instance also counts as a reference.
 	// See: _reference_owner_unsafe()
 
-	if (Object::cast_to<Reference>(owner)->unreference()) {
+	bool die = static_cast<Reference *>(owner)->unreference();
+
+	if (die) {
 		memdelete(owner);
 		owner = NULL;
 	}
+
+	return die;
 }
 
-void CSharpInstance::mono_object_disposed() {
+MonoObject *CSharpInstance::_internal_new_managed() {
+#ifdef DEBUG_ENABLED
+	CRASH_COND(!gchandle.is_valid());
+#endif
+
+	CSharpLanguage::get_singleton()->release_script_gchandle(gchandle);
+
+	ERR_FAIL_NULL_V(owner, NULL);
+	ERR_FAIL_COND_V(script.is_null(), NULL);
 
 	if (base_ref)
-		_unreference_owner_unsafe();
+		_reference_owner_unsafe();
+
+	MonoObject *mono_object = mono_object_new(SCRIPTS_DOMAIN, script->script_class->get_mono_ptr());
+
+	if (!mono_object) {
+		script = Ref<CSharpScript>();
+		owner->set_script_instance(NULL);
+		ERR_EXPLAIN("Failed to allocate memory for the object");
+		ERR_FAIL_V(NULL);
+	}
+
+	CACHED_FIELD(GodotObject, ptr)->set_value_raw(mono_object, owner);
+
+	// Construct
+	GDMonoMethod *ctor = script->script_class->get_method(CACHED_STRING_NAME(dotctor), 0);
+	ctor->invoke_raw(mono_object, NULL);
+
+	// Tie managed to unmanaged
+	gchandle = MonoGCHandle::create_strong(mono_object);
+
+	return mono_object;
+}
+
+bool CSharpInstance::mono_object_disposed(MonoObject *p_obj) {
+
+#ifdef DEBUG_ENABLED
+	CRASH_COND(base_ref == true);
+	CRASH_COND(gchandle.is_null());
+#endif
+	CSharpLanguage::get_singleton()->release_script_gchandle(p_obj, gchandle);
+}
+
+bool CSharpInstance::mono_object_disposed_baseref(MonoObject *p_obj, bool p_is_finalizer, bool &r_owner_deleted) {
+
+#ifdef DEBUG_ENABLED
+	CRASH_COND(base_ref == false);
+	CRASH_COND(gchandle.is_null());
+#endif
+	if (_unreference_owner_unsafe()) {
+		r_owner_deleted = true;
+	} else {
+		r_owner_deleted = false;
+		CSharpLanguage::get_singleton()->release_script_gchandle(p_obj, gchandle);
+		if (p_is_finalizer) {
+			// If the native instance is still alive, then it was
+			// referenced from another thread before the finalizer could
+			// unreference it and delete it, so we want to keep it.
+			// GC.ReRegisterForFinalize(this) is not safe because the objects
+			// referenced by this could have already been collected.
+			// Instead we will create a new managed instance here.
+			_internal_new_managed();
+		}
+	}
 }
 
 void CSharpInstance::refcount_incremented() {
 
 #ifdef DEBUG_ENABLED
 	CRASH_COND(!base_ref);
+	CRASH_COND(owner == NULL);
 #endif
 
 	Reference *ref_owner = Object::cast_to<Reference>(owner);
@@ -1378,7 +1503,7 @@ void CSharpInstance::refcount_incremented() {
 		// so the owner must hold the managed side alive again to avoid it from being GCed.
 
 		// Release the current weak handle and replace it with a strong handle.
-		uint32_t strong_gchandle = MonoGCHandle::make_strong_handle(gchandle->get_target());
+		uint32_t strong_gchandle = MonoGCHandle::new_strong_handle(gchandle->get_target());
 		gchandle->release();
 		gchandle->set_handle(strong_gchandle, MonoGCHandle::STRONG_HANDLE);
 	}
@@ -1388,6 +1513,7 @@ bool CSharpInstance::refcount_decremented() {
 
 #ifdef DEBUG_ENABLED
 	CRASH_COND(!base_ref);
+	CRASH_COND(owner == NULL);
 #endif
 
 	Reference *ref_owner = Object::cast_to<Reference>(owner);
@@ -1399,7 +1525,7 @@ bool CSharpInstance::refcount_decremented() {
 		// the managed instance takes responsibility of deleting the owner when GCed.
 
 		// Release the current strong handle and replace it with a weak handle.
-		uint32_t weak_gchandle = MonoGCHandle::make_weak_handle(gchandle->get_target());
+		uint32_t weak_gchandle = MonoGCHandle::new_weak_handle(gchandle->get_target());
 		gchandle->release();
 		gchandle->set_handle(weak_gchandle, MonoGCHandle::WEAK_HANDLE);
 
@@ -1470,25 +1596,64 @@ MultiplayerAPI::RPCMode CSharpInstance::get_rset_mode(const StringName &p_variab
 
 void CSharpInstance::notification(int p_notification) {
 
-	MonoObject *mono_object = get_mono_object();
-
 	if (p_notification == Object::NOTIFICATION_PREDELETE) {
-		if (mono_object != NULL) { // otherwise it was collected, and the finalizer already called NOTIFICATION_PREDELETE
-			call_notification_no_check(mono_object, p_notification);
-			// Set the native instance field to IntPtr.Zero
-			CACHED_FIELD(GodotObject, ptr)->set_value_raw(mono_object, NULL);
+		// When NOTIFICATION_PREDELETE is sent, we also take the chance to call Dispose().
+		// It's safe to call Dispose() multiple times and NOTIFICATION_PREDELETE is guaranteed
+		// to be sent at least once, which happens right before the call to the destructor.
+
+		if (base_ref) {
+			// It's not safe to proceed if the owner derives Reference and the refcount reached 0.
+			// At this point, Dispose() was already called (manually or from the finalizer) so
+			// that's not a problem. The refcount wouldn't have reached 0 otherwise, since the
+			// managed side references it and Dispose() needs to be called to release it.
+			// However, this means C# Reference scripts can't receive NOTIFICATION_PREDELETE, but
+			// this is likely the case with GDScript as well: https://github.com/godotengine/godot/issues/6784
+			return;
 		}
+
+		_call_notification(p_notification);
+
+		MonoObject *mono_object = get_mono_object();
+		ERR_FAIL_NULL(mono_object);
+
+		GDMonoUtils::GodotObject_Dispose thunk = CACHED_METHOD_THUNK(GodotObject, Dispose);
+
+		MonoException *exc = NULL;
+		thunk(mono_object, (MonoObject **)&exc);
+
+		if (exc) {
+			GDMonoUtils::set_pending_exception(exc);
+		}
+
 		return;
 	}
 
-	call_notification_no_check(mono_object, p_notification);
+	_call_notification(p_notification);
 }
 
-void CSharpInstance::call_notification_no_check(MonoObject *p_mono_object, int p_notification) {
-	Variant value = p_notification;
-	const Variant *args[1] = { &value };
+void CSharpInstance::_call_notification(int p_notification) {
+
+	MonoObject *mono_object = get_mono_object();
+	ERR_FAIL_NULL(mono_object);
+
+	// Custom version of _call_multilevel, optimized for _notification
+
+	uint32_t arg = p_notification;
+	void *args[1] = { &arg };
+	StringName method_name = CACHED_STRING_NAME(_notification);
+
+	GDMonoClass *top = script->script_class;
+
+	while (top && top != script->native) {
+		GDMonoMethod *method = top->get_method(method_name, 1);
+
+		if (method) {
+			method->invoke_raw(mono_object, args);
+			return;
+		}
 
-	_call_multilevel(p_mono_object, CACHED_STRING_NAME(_notification), args, 1);
+		top = top->get_parent_class();
+	}
 }
 
 Ref<Script> CSharpInstance::get_script() const {
@@ -1501,11 +1666,11 @@ ScriptLanguage *CSharpInstance::get_language() {
 	return CSharpLanguage::get_singleton();
 }
 
-CSharpInstance::CSharpInstance() {
-
-	owner = NULL;
-	base_ref = false;
-	ref_dying = false;
+CSharpInstance::CSharpInstance() :
+		owner(NULL),
+		base_ref(false),
+		ref_dying(false),
+		unsafe_referenced(false) {
 }
 
 CSharpInstance::~CSharpInstance() {
@@ -1514,10 +1679,7 @@ CSharpInstance::~CSharpInstance() {
 		gchandle->release(); // Make sure it's released
 	}
 
-	if (base_ref && !ref_dying) { // it may be called from the owner's destructor
-#ifdef DEBUG_ENABLED
-		CRASH_COND(!owner); // dunno, just in case
-#endif
+	if (base_ref && !ref_dying && owner) { // it may be called from the owner's destructor
 		_unreference_owner_unsafe();
 	}
 
@@ -1586,26 +1748,27 @@ bool CSharpScript::_update_exports() {
 		exported_members_cache.clear();
 		exported_members_defval_cache.clear();
 
-		// We are creating a temporary new instance of the class here to get the default value
-		// TODO Workaround. Should be replaced with IL opcodes analysis
+		// Here we create a temporary managed instance of the class to get the initial values
 
 		MonoObject *tmp_object = mono_object_new(SCRIPTS_DOMAIN, script_class->get_mono_ptr());
 
-		if (tmp_object) {
-			CACHED_FIELD(GodotObject, ptr)->set_value_raw(tmp_object, tmp_object); // FIXME WTF is this workaround
+		if (!tmp_object) {
+			ERR_PRINT("Failed to create temporary MonoObject");
+			return false;
+		}
 
-			GDMonoMethod *ctor = script_class->get_method(CACHED_STRING_NAME(dotctor), 0);
-			MonoException *exc = NULL;
-			ctor->invoke(tmp_object, NULL, &exc);
+		uint32_t tmp_pinned_gchandle = MonoGCHandle::new_strong_handle_pinned(tmp_object); // pin it (not sure if needed)
 
-			if (exc) {
-				ERR_PRINT("Exception thrown from constructor of temporary MonoObject:");
-				GDMonoUtils::debug_print_unhandled_exception(exc);
-				tmp_object = NULL;
-				ERR_FAIL_V(false);
-			}
-		} else {
-			ERR_PRINT("Failed to create temporary MonoObject");
+		GDMonoMethod *ctor = script_class->get_method(CACHED_STRING_NAME(dotctor), 0);
+		MonoException *ctor_exc = NULL;
+		ctor->invoke(tmp_object, NULL, &ctor_exc);
+
+		if (ctor_exc) {
+			MonoGCHandle::free_handle(tmp_pinned_gchandle);
+			tmp_object = NULL;
+
+			ERR_PRINT("Exception thrown from constructor of temporary MonoObject:");
+			GDMonoUtils::debug_print_unhandled_exception(ctor_exc);
 			return false;
 		}
 
@@ -1666,6 +1829,21 @@ bool CSharpScript::_update_exports() {
 
 			top = top->get_parent_class();
 		}
+
+		// Dispose the temporary managed instance
+
+		GDMonoUtils::GodotObject_Dispose thunk = CACHED_METHOD_THUNK(GodotObject, Dispose);
+
+		MonoException *exc = NULL;
+		thunk(tmp_object, (MonoObject **)&exc);
+
+		if (exc) {
+			ERR_PRINT("Exception thrown from method Dispose() of temporary MonoObject:");
+			GDMonoUtils::debug_print_unhandled_exception(exc);
+		}
+
+		MonoGCHandle::free_handle(tmp_pinned_gchandle);
+		tmp_object = NULL;
 	}
 
 	if (placeholders.size()) {
@@ -2012,6 +2190,8 @@ CSharpInstance *CSharpScript::_create_instance(const Variant **p_args, int p_arg
 		ERR_FAIL_V(NULL);
 	}
 
+	uint32_t pinned_gchandle = MonoGCHandle::new_strong_handle_pinned(mono_object); // we might lock after this, so pin it
+
 #ifndef NO_THREADS
 	CSharpLanguage::singleton->lock->lock();
 #endif
@@ -2033,6 +2213,8 @@ CSharpInstance *CSharpScript::_create_instance(const Variant **p_args, int p_arg
 
 	/* STEP 3, PARTY */
 
+	MonoGCHandle::free_handle(pinned_gchandle);
+
 	//@TODO make thread safe
 	return instance;
 }
diff --git a/modules/mono/csharp_script.h b/modules/mono/csharp_script.h
index 1a5d0c8a69..d152e802de 100644
--- a/modules/mono/csharp_script.h
+++ b/modules/mono/csharp_script.h
@@ -48,6 +48,8 @@ class CSharpLanguage;
 #ifdef NO_SAFE_CAST
 template <typename TScriptInstance, typename TScriptLanguage>
 TScriptInstance *cast_script_instance(ScriptInstance *p_inst) {
+	if (!p_inst)
+		return NULL;
 	return p_inst->get_language() == TScriptLanguage::get_singleton() ? static_cast<TScriptInstance *>(p_inst) : NULL;
 }
 #else
@@ -177,14 +179,19 @@ class CSharpInstance : public ScriptInstance {
 
 	friend class CSharpScript;
 	friend class CSharpLanguage;
+
 	Object *owner;
-	Ref<CSharpScript> script;
-	Ref<MonoGCHandle> gchandle;
 	bool base_ref;
 	bool ref_dying;
+	bool unsafe_referenced;
+
+	Ref<CSharpScript> script;
+	Ref<MonoGCHandle> gchandle;
 
-	void _reference_owner_unsafe();
-	void _unreference_owner_unsafe();
+	bool _reference_owner_unsafe();
+	bool _unreference_owner_unsafe();
+
+	MonoObject *_internal_new_managed();
 
 	// Do not use unless you know what you are doing
 	friend void GDMonoInternals::tie_managed_to_unmanaged(MonoObject *, Object *);
@@ -208,7 +215,8 @@ public:
 	virtual void call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount);
 	virtual void call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount);
 
-	void mono_object_disposed();
+	bool mono_object_disposed(MonoObject *p_obj);
+	bool mono_object_disposed_baseref(MonoObject *p_obj, bool p_is_finalizer, bool &r_owner_deleted);
 
 	virtual void refcount_incremented();
 	virtual bool refcount_decremented();
@@ -217,7 +225,7 @@ public:
 	virtual MultiplayerAPI::RPCMode get_rset_mode(const StringName &p_variable) const;
 
 	virtual void notification(int p_notification);
-	void call_notification_no_check(MonoObject *p_mono_object, int p_notification);
+	void _call_notification(int p_notification);
 
 	virtual Ref<Script> get_script() const;
 
@@ -227,6 +235,12 @@ public:
 	~CSharpInstance();
 };
 
+struct CSharpScriptBinding {
+	StringName type_name;
+	GDMonoClass *wrapper_class;
+	Ref<MonoGCHandle> gchandle;
+};
+
 class CSharpLanguage : public ScriptLanguage {
 
 	friend class CSharpScript;
@@ -241,10 +255,11 @@ class CSharpLanguage : public ScriptLanguage {
 
 	Mutex *lock;
 	Mutex *script_bind_lock;
+	Mutex *script_gchandle_release_lock;
 
 	Map<Ref<CSharpScript>, Map<ObjectID, List<Pair<StringName, Variant> > > > to_reload;
 
-	Map<Object *, Ref<MonoGCHandle> > gchandle_bindings;
+	Map<Object *, CSharpScriptBinding> script_bindings;
 
 	struct StringNameCache {
 
@@ -270,6 +285,9 @@ public:
 
 	_FORCE_INLINE_ static CSharpLanguage *get_singleton() { return singleton; }
 
+	static void release_script_gchandle(Ref<MonoGCHandle> &p_gchandle);
+	static void release_script_gchandle(MonoObject *p_pinned_expected_obj, Ref<MonoGCHandle> &p_gchandle);
+
 	bool debug_break(const String &p_error, bool p_allow_continue = true);
 	bool debug_break_parse(const String &p_file, int p_line, const String &p_error);
 
diff --git a/modules/mono/editor/bindings_generator.cpp b/modules/mono/editor/bindings_generator.cpp
index cc954348f4..1620c05909 100644
--- a/modules/mono/editor/bindings_generator.cpp
+++ b/modules/mono/editor/bindings_generator.cpp
@@ -41,6 +41,7 @@
 #include "ucaps.h"
 
 #include "../glue/cs_compressed.gen.h"
+#include "../glue/cs_glue_version.gen.h"
 #include "../godotsharp_defs.h"
 #include "../mono_gd/gd_mono_marshal.h"
 #include "../utils/path_utils.h"
@@ -48,7 +49,7 @@
 #include "csharp_project.h"
 #include "net_solution.h"
 
-#define CS_INDENT "    "
+#define CS_INDENT "    " // 4 whitespaces
 
 #define INDENT1 CS_INDENT
 #define INDENT2 INDENT1 INDENT1
@@ -68,23 +69,18 @@
 #define CLOSE_BLOCK_L3 INDENT3 CLOSE_BLOCK
 #define CLOSE_BLOCK_L4 INDENT4 CLOSE_BLOCK
 
-#define LOCAL_RET "ret"
-
 #define CS_FIELD_MEMORYOWN "memoryOwn"
 #define CS_PARAM_METHODBIND "method"
 #define CS_PARAM_INSTANCE "ptr"
 #define CS_SMETHOD_GETINSTANCE "GetPtr"
-#define CS_FIELD_SINGLETON "instance"
-#define CS_PROP_SINGLETON "Instance"
-#define CS_CLASS_SIGNALAWAITER "SignalAwaiter"
 #define CS_METHOD_CALL "Call"
 
 #define GLUE_HEADER_FILE "glue_header.h"
 #define ICALL_PREFIX "godot_icall_"
 #define SINGLETON_ICALL_SUFFIX "_get_singleton"
-#define ICALL_GET_METHODBIND ICALL_PREFIX "ClassDB_get_method"
-#define ICALL_CONNECT_SIGNAL_AWAITER ICALL_PREFIX "Object_connect_signal_awaiter"
-#define ICALL_OBJECT_DTOR ICALL_PREFIX "Object_Dtor"
+#define ICALL_GET_METHODBIND ICALL_PREFIX "Object_ClassDB_get_method"
+
+#define C_LOCAL_RET "ret"
 #define C_LOCAL_PTRCALL_ARGS "call_args"
 #define C_MACRO_OBJECT_CONSTRUCT "GODOTSHARP_INSTANCE_OBJECT"
 
@@ -101,7 +97,7 @@
 #define C_METHOD_MONOARRAY_TO(m_type) C_NS_MONOMARSHAL "::mono_array_to_" #m_type
 #define C_METHOD_MONOARRAY_FROM(m_type) C_NS_MONOMARSHAL "::" #m_type "_to_mono_array"
 
-#define BINDINGS_GENERATOR_VERSION UINT32_C(2)
+#define BINDINGS_GENERATOR_VERSION UINT32_C(3)
 
 const char *BindingsGenerator::TypeInterface::DEFAULT_VARARG_C_IN = "\t%0 %1_in = %1;\n";
 
@@ -196,48 +192,6 @@ String BindingsGenerator::_determine_enum_prefix(const EnumInterface &p_ienum) {
 	return front->get().name.substr(0, candidate_len);
 }
 
-void BindingsGenerator::_generate_header_icalls() {
-
-	core_custom_icalls.clear();
-
-	core_custom_icalls.push_back(InternalCall(ICALL_GET_METHODBIND, "IntPtr", "string type, string method"));
-	core_custom_icalls.push_back(InternalCall(ICALL_OBJECT_DTOR, "void", "object obj, IntPtr ptr"));
-
-	core_custom_icalls.push_back(InternalCall(ICALL_CONNECT_SIGNAL_AWAITER, "Error",
-			"IntPtr source, string signal, IntPtr target, " CS_CLASS_SIGNALAWAITER " awaiter"));
-
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_Ctor", "IntPtr", "string path"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_Dtor", "void", "IntPtr ptr"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_operator_String", "string", "IntPtr ptr"));
-
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "RID_Ctor", "IntPtr", "IntPtr from"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "RID_Dtor", "void", "IntPtr ptr"));
-
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_md5_buffer", "byte[]", "string str"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_md5_text", "string", "string str"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_rfind", "int", "string str, string what, int from"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_rfindn", "int", "string str, string what, int from"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_sha256_buffer", "byte[]", "string str"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_sha256_text", "string", "string str"));
-
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_bytes2var", "object", "byte[] bytes"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_convert", "object", "object what, int type"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_hash", "int", "object var"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_instance_from_id", "Object", "int instance_id"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_print", "void", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printerr", "void", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printraw", "void", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_prints", "void", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printt", "void", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_seed", "void", "int seed"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_str", "string", "object[] what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_str2var", "object", "string str"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_type_exists", "bool", "string type"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_var2bytes", "byte[]", "object what"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_var2str", "string", "object var"));
-	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_weakref", "WeakRef", "IntPtr obj"));
-}
-
 void BindingsGenerator::_generate_method_icalls(const TypeInterface &p_itype) {
 
 	for (const List<MethodInterface>::Element *E = p_itype.methods.front(); E; E = E->next()) {
@@ -248,13 +202,8 @@ void BindingsGenerator::_generate_method_icalls(const TypeInterface &p_itype) {
 
 		const TypeInterface *return_type = _get_type_or_placeholder(imethod.return_type);
 
-		String im_sig;
-		String im_unique_sig;
-
-		if (p_itype.is_object_type) {
-			im_sig += "IntPtr " CS_PARAM_METHODBIND ", ";
-			im_unique_sig += imethod.return_type.cname.operator String() + ",IntPtr,IntPtr";
-		}
+		String im_sig = "IntPtr " CS_PARAM_METHODBIND ", ";
+		String im_unique_sig = imethod.return_type.cname.operator String() + ",IntPtr,IntPtr";
 
 		im_sig += "IntPtr " CS_PARAM_INSTANCE;
 
@@ -268,37 +217,28 @@ void BindingsGenerator::_generate_method_icalls(const TypeInterface &p_itype) {
 			im_sig += " arg";
 			im_sig += itos(i + 1);
 
-			if (p_itype.is_object_type) {
-				im_unique_sig += ",";
-				im_unique_sig += get_unique_sig(*arg_type);
-			}
+			im_unique_sig += ",";
+			im_unique_sig += get_unique_sig(*arg_type);
 
 			i++;
 		}
 
+		// godot_icall_{argc}_{icallcount}
 		String icall_method = ICALL_PREFIX;
-
-		if (p_itype.is_object_type) {
-			icall_method += itos(imethod.arguments.size()) + "_" + itos(method_icalls.size()); // godot_icall_{argc}_{icallcount}
-		} else {
-			icall_method += p_itype.name + "_" + imethod.name; // godot_icall_{Type}_{method}
-		}
+		icall_method += itos(imethod.arguments.size());
+		icall_method += "_";
+		icall_method += itos(method_icalls.size());
 
 		InternalCall im_icall = InternalCall(p_itype.api_type, icall_method, return_type->im_type_out, im_sig, im_unique_sig);
 
-		if (p_itype.is_object_type) {
-			List<InternalCall>::Element *match = method_icalls.find(im_icall);
+		List<InternalCall>::Element *match = method_icalls.find(im_icall);
 
-			if (match) {
-				if (p_itype.api_type != ClassDB::API_EDITOR)
-					match->get().editor_only = false;
-				method_icalls_map.insert(&E->get(), &match->get());
-			} else {
-				List<InternalCall>::Element *added = method_icalls.push_back(im_icall);
-				method_icalls_map.insert(&E->get(), &added->get());
-			}
+		if (match) {
+			if (p_itype.api_type != ClassDB::API_EDITOR)
+				match->get().editor_only = false;
+			method_icalls_map.insert(&E->get(), &match->get());
 		} else {
-			List<InternalCall>::Element *added = builtin_method_icalls.push_back(im_icall);
+			List<InternalCall>::Element *added = method_icalls.push_back(im_icall);
 			method_icalls_map.insert(&E->get(), &added->get());
 		}
 	}
@@ -483,20 +423,6 @@ Error BindingsGenerator::generate_cs_core_project(const String &p_output_dir, bo
 		compile_items.push_back(output_file);
 	}
 
-#define GENERATE_BUILTIN_TYPE(m_name)                                       \
-	{                                                                       \
-		String output_file = path_join(core_dir, #m_name ".cs");            \
-		Error err = _generate_cs_type(builtin_types[#m_name], output_file); \
-		if (err != OK)                                                      \
-			return err;                                                     \
-		compile_items.push_back(output_file);                               \
-	}
-
-	GENERATE_BUILTIN_TYPE(NodePath);
-	GENERATE_BUILTIN_TYPE(RID);
-
-#undef GENERATE_BUILTIN_TYPE
-
 	// Generate sources from compressed files
 
 	Map<String, CompressedFile> compressed_files;
@@ -537,29 +463,26 @@ Error BindingsGenerator::generate_cs_core_project(const String &p_output_dir, bo
 	cs_icalls_content.push_back("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
 	cs_icalls_content.push_back(INDENT1 "internal static class " BINDINGS_CLASS_NATIVECALLS "\n" INDENT1 OPEN_BLOCK);
 
-	cs_icalls_content.push_back(INDENT2 "internal static ulong godot_api_hash = ");
+	cs_icalls_content.push_back(MEMBER_BEGIN "internal static ulong godot_api_hash = ");
 	cs_icalls_content.push_back(String::num_uint64(GDMono::get_singleton()->get_api_core_hash()) + ";\n");
-	cs_icalls_content.push_back(INDENT2 "internal static uint bindings_version = ");
+	cs_icalls_content.push_back(MEMBER_BEGIN "internal static uint bindings_version = ");
 	cs_icalls_content.push_back(String::num_uint64(BINDINGS_GENERATOR_VERSION) + ";\n");
-	cs_icalls_content.push_back(INDENT2 "internal static uint cs_glue_version = ");
+	cs_icalls_content.push_back(MEMBER_BEGIN "internal static uint cs_glue_version = ");
 	cs_icalls_content.push_back(String::num_uint64(CS_GLUE_VERSION) + ";\n");
-	cs_icalls_content.push_back("\n");
 
-#define ADD_INTERNAL_CALL(m_icall)                                                             \
-	if (!m_icall.editor_only) {                                                                \
-		cs_icalls_content.push_back(INDENT2 "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
-		cs_icalls_content.push_back(INDENT2 "internal extern static ");                        \
-		cs_icalls_content.push_back(m_icall.im_type_out + " ");                                \
-		cs_icalls_content.push_back(m_icall.name + "(");                                       \
-		cs_icalls_content.push_back(m_icall.im_sig + ");\n");                                  \
+#define ADD_INTERNAL_CALL(m_icall)                                                                  \
+	if (!m_icall.editor_only) {                                                                     \
+		cs_icalls_content.push_back(MEMBER_BEGIN "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
+		cs_icalls_content.push_back(INDENT2 "internal extern static ");                             \
+		cs_icalls_content.push_back(m_icall.im_type_out + " ");                                     \
+		cs_icalls_content.push_back(m_icall.name + "(");                                            \
+		cs_icalls_content.push_back(m_icall.im_sig + ");\n");                                       \
 	}
 
 	for (const List<InternalCall>::Element *E = core_custom_icalls.front(); E; E = E->next())
 		ADD_INTERNAL_CALL(E->get());
 	for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
 		ADD_INTERNAL_CALL(E->get());
-	for (const List<InternalCall>::Element *E = builtin_method_icalls.front(); E; E = E->next())
-		ADD_INTERNAL_CALL(E->get());
 
 #undef ADD_INTERNAL_CALL
 
@@ -658,8 +581,6 @@ Error BindingsGenerator::generate_cs_editor_project(const String &p_output_dir,
 		cs_icalls_content.push_back(m_icall.im_sig + ");\n");                                  \
 	}
 
-	// No need to add builtin_method_icalls. Builtin types are core only
-
 	for (const List<InternalCall>::Element *E = editor_custom_icalls.front(); E; E = E->next())
 		ADD_INTERNAL_CALL(E->get());
 	for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
@@ -693,18 +614,34 @@ Error BindingsGenerator::generate_cs_editor_project(const String &p_output_dir,
 	return OK;
 }
 
-// TODO: there are constants that hide inherited members. must explicitly use `new` to avoid warnings
-// e.g.: warning CS0108: 'SpriteBase3D.FLAG_MAX' hides inherited member 'GeometryInstance.FLAG_MAX'. Use the new keyword if hiding was intended.
+// FIXME: There are some members that hide other inherited members.
+// - In the case of both members being the same kind, the new one must be declared
+// explicitly as `new` to avoid the warning (and we must print a message about it).
+// - In the case of both members being of a different kind, then the new one must
+// be renamed to avoid the name collision (and we must print a warning about it).
+// - Csc warning e.g.:
+// ObjectType/LineEdit.cs(140,38): warning CS0108: 'LineEdit.FocusMode' hides inherited member 'Control.FocusMode'. Use the new keyword if hiding was intended.
 Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const String &p_output_file) {
 
+	CRASH_COND(!itype.is_object_type);
+
 	bool is_derived_type = itype.base_name != StringName();
 
+	if (!is_derived_type) {
+		// Some Godot.Object assertions
+		CRASH_COND(itype.cname != name_cache.type_Object);
+		CRASH_COND(!itype.is_instantiable);
+		CRASH_COND(itype.api_type != ClassDB::API_CORE);
+		CRASH_COND(itype.is_reference);
+		CRASH_COND(itype.is_singleton);
+	}
+
 	List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
 
 	if (verbose_output)
 		OS::get_singleton()->print(String("Generating " + itype.proxy_name + ".cs...\n").utf8());
 
-	String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor");
+	String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor"); // Used only for derived types
 
 	List<String> output;
 
@@ -733,28 +670,24 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 	}
 
 	output.push_back(INDENT1 "public ");
-	if (itype.is_object_type) {
-		if (itype.is_singleton) {
-			output.push_back("static partial class ");
-		} else {
-			output.push_back(itype.is_instantiable ? "partial class " : "abstract partial class ");
-		}
+	if (itype.is_singleton) {
+		output.push_back("static partial class ");
 	} else {
-		output.push_back("partial class ");
+		output.push_back(itype.is_instantiable ? "partial class " : "abstract partial class ");
 	}
 	output.push_back(itype.proxy_name);
 
 	if (itype.is_singleton) {
 		output.push_back("\n");
-	} else if (!is_derived_type || !itype.is_object_type /* assuming only object types inherit */) {
-		output.push_back(" : IDisposable\n");
-	} else if (obj_types.has(itype.base_name)) {
-		output.push_back(" : ");
-		output.push_back(obj_types[itype.base_name].proxy_name);
-		output.push_back("\n");
-	} else {
-		ERR_PRINTS("Base type '" + itype.base_name.operator String() + "' does not exist, for class " + itype.name);
-		return ERR_INVALID_DATA;
+	} else if (is_derived_type) {
+		if (obj_types.has(itype.base_name)) {
+			output.push_back(" : ");
+			output.push_back(obj_types[itype.base_name].proxy_name);
+			output.push_back("\n");
+		} else {
+			ERR_PRINTS("Base type '" + itype.base_name.operator String() + "' does not exist, for class " + itype.name);
+			return ERR_INVALID_DATA;
+		}
 	}
 
 	output.push_back(INDENT1 "{");
@@ -851,9 +784,6 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 			output.push_back(INDENT2 CLOSE_BLOCK);
 		}
 
-		if (itype.enums.size())
-			output.push_back("\n");
-
 		// Add properties
 
 		for (const List<PropertyInterface>::Element *E = itype.properties.front(); E; E = E->next()) {
@@ -865,43 +795,9 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 				ERR_FAIL_V(prop_err);
 			}
 		}
-
-		if (class_doc->properties.size())
-			output.push_back("\n");
 	}
 
-	if (!itype.is_object_type) {
-		output.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"" + itype.name + "\";\n");
-		output.push_back(MEMBER_BEGIN "private bool disposed = false;\n");
-		output.push_back(MEMBER_BEGIN "internal IntPtr " BINDINGS_PTR_FIELD ";\n");
-
-		output.push_back(MEMBER_BEGIN "internal static IntPtr " CS_SMETHOD_GETINSTANCE "(");
-		output.push_back(itype.proxy_name);
-		output.push_back(" instance)\n" OPEN_BLOCK_L2 "return instance == null ? IntPtr.Zero : instance." BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
-
-		// Add Destructor
-		output.push_back(MEMBER_BEGIN "~");
-		output.push_back(itype.proxy_name);
-		output.push_back("()\n" OPEN_BLOCK_L2 "Dispose(false);\n" CLOSE_BLOCK_L2);
-
-		// Add the Dispose from IDisposable
-		output.push_back(MEMBER_BEGIN "public void Dispose()\n" OPEN_BLOCK_L2 "Dispose(true);\n" INDENT3 "GC.SuppressFinalize(this);\n" CLOSE_BLOCK_L2);
-
-		// Add the virtual Dispose
-		output.push_back(MEMBER_BEGIN "protected virtual void Dispose(bool disposing)\n" OPEN_BLOCK_L2
-									  "if (disposed) return;\n" INDENT3
-									  "if (" BINDINGS_PTR_FIELD " != IntPtr.Zero)\n" OPEN_BLOCK_L3 "NativeCalls.godot_icall_");
-		output.push_back(itype.proxy_name);
-		output.push_back("_Dtor(" BINDINGS_PTR_FIELD ");\n" INDENT5 BINDINGS_PTR_FIELD " = IntPtr.Zero;\n" CLOSE_BLOCK_L3 INDENT3
-						 "GC.SuppressFinalize(this);\n" INDENT3 "disposed = true;\n" CLOSE_BLOCK_L2);
-
-		output.push_back(MEMBER_BEGIN "internal ");
-		output.push_back(itype.proxy_name);
-		output.push_back("(IntPtr " BINDINGS_PTR_FIELD ")\n" OPEN_BLOCK_L2 "this." BINDINGS_PTR_FIELD " = " BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
-
-		output.push_back(MEMBER_BEGIN "public IntPtr NativeInstance\n" OPEN_BLOCK_L2
-									  "get { return " BINDINGS_PTR_FIELD "; }\n" CLOSE_BLOCK_L2);
-	} else if (itype.is_singleton) {
+	if (itype.is_singleton) {
 		// Add the type name and the singleton pointer as static fields
 
 		output.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
@@ -913,21 +809,13 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 		output.push_back("." ICALL_PREFIX);
 		output.push_back(itype.name);
 		output.push_back(SINGLETON_ICALL_SUFFIX "();\n");
-	} else {
+	} else if (is_derived_type) {
 		// Add member fields
 
 		output.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
 		output.push_back(itype.name);
 		output.push_back("\";\n");
 
-		// Only the base class stores the pointer to the native object
-		// This pointer is expected to be and must be of type Object*
-		if (!is_derived_type) {
-			output.push_back(MEMBER_BEGIN "private bool disposed = false;\n");
-			output.push_back(INDENT2 "internal IntPtr " BINDINGS_PTR_FIELD ";\n");
-			output.push_back(INDENT2 "internal bool " CS_FIELD_MEMORYOWN ";\n");
-		}
-
 		// Add default constructor
 		if (itype.is_instantiable) {
 			output.push_back(MEMBER_BEGIN "public ");
@@ -952,67 +840,9 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 		// Add.. em.. trick constructor. Sort of.
 		output.push_back(MEMBER_BEGIN "internal ");
 		output.push_back(itype.proxy_name);
-		if (is_derived_type) {
-			output.push_back("(bool " CS_FIELD_MEMORYOWN ") : base(" CS_FIELD_MEMORYOWN ") {}\n");
-		} else {
-			output.push_back("(bool " CS_FIELD_MEMORYOWN ")\n" OPEN_BLOCK_L2
-							 "this." CS_FIELD_MEMORYOWN " = " CS_FIELD_MEMORYOWN ";\n" CLOSE_BLOCK_L2);
-		}
-
-		// Add methods
-
-		if (!is_derived_type) {
-			output.push_back(MEMBER_BEGIN "public IntPtr NativeInstance\n" OPEN_BLOCK_L2
-										  "get { return " BINDINGS_PTR_FIELD "; }\n" CLOSE_BLOCK_L2);
-
-			output.push_back(MEMBER_BEGIN "internal static IntPtr " CS_SMETHOD_GETINSTANCE "(Object instance)\n" OPEN_BLOCK_L2
-										  "return instance == null ? IntPtr.Zero : instance." BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
-		}
-
-		if (!is_derived_type) {
-			// Add destructor
-			output.push_back(MEMBER_BEGIN "~");
-			output.push_back(itype.proxy_name);
-			output.push_back("()\n" OPEN_BLOCK_L2 "Dispose(false);\n" CLOSE_BLOCK_L2);
-
-			// Add the Dispose from IDisposable
-			output.push_back(MEMBER_BEGIN "public void Dispose()\n" OPEN_BLOCK_L2 "Dispose(true);\n" INDENT3 "GC.SuppressFinalize(this);\n" CLOSE_BLOCK_L2);
-
-			// Add the virtual Dispose
-			output.push_back(MEMBER_BEGIN "protected virtual void Dispose(bool disposing)\n" OPEN_BLOCK_L2
-										  "if (disposed) return;\n" INDENT3
-										  "if (" BINDINGS_PTR_FIELD " != IntPtr.Zero)\n" OPEN_BLOCK_L3
-										  "if (" CS_FIELD_MEMORYOWN ")\n" OPEN_BLOCK_L4 CS_FIELD_MEMORYOWN
-										  " = false;\n" INDENT5 BINDINGS_CLASS_NATIVECALLS "." ICALL_OBJECT_DTOR
-										  "(this, " BINDINGS_PTR_FIELD ");\n" CLOSE_BLOCK_L4 CLOSE_BLOCK_L3 INDENT3
-										  "this." BINDINGS_PTR_FIELD " = IntPtr.Zero;\n" INDENT3
-										  "GC.SuppressFinalize(this);\n" INDENT3 "disposed = true;\n" CLOSE_BLOCK_L2);
-
-			Map<StringName, TypeInterface>::Element *array_itype = builtin_types.find(name_cache.type_Array);
-
-			if (!array_itype) {
-				ERR_PRINT("BUG: Array type interface not found!");
-				return ERR_BUG;
-			}
-
-			OrderedHashMap<StringName, TypeInterface>::Element object_itype = obj_types.find("Object");
-
-			if (!object_itype) {
-				ERR_PRINT("BUG: Object type interface not found!");
-				return ERR_BUG;
-			}
-
-			output.push_back(MEMBER_BEGIN "public " CS_CLASS_SIGNALAWAITER " ToSignal(");
-			output.push_back(object_itype.get().cs_type);
-			output.push_back(" source, string signal)\n" OPEN_BLOCK_L2
-							 "return new " CS_CLASS_SIGNALAWAITER "(source, signal, this);\n" CLOSE_BLOCK_L2);
-		}
+		output.push_back("(bool " CS_FIELD_MEMORYOWN ") : base(" CS_FIELD_MEMORYOWN ") {}\n");
 	}
 
-	Map<StringName, String>::Element *extra_member = extra_members.find(itype.cname);
-	if (extra_member)
-		output.push_back(extra_member->get());
-
 	int method_bind_count = 0;
 	for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
 		const MethodInterface &imethod = E->get();
@@ -1030,7 +860,7 @@ Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const Str
 			custom_icalls.push_back(singleton_icall);
 	}
 
-	if (itype.is_instantiable) {
+	if (is_derived_type && itype.is_instantiable) {
 		InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
 
 		if (!find_icall_by_name(ctor_icall.name, custom_icalls))
@@ -1178,9 +1008,7 @@ Error BindingsGenerator::_generate_cs_method(const BindingsGenerator::TypeInterf
 	String arguments_sig;
 	String cs_in_statements;
 
-	String icall_params;
-	if (p_itype.is_object_type)
-		icall_params += method_bind_field + ", ";
+	String icall_params = method_bind_field + ", ";
 	icall_params += sformat(p_itype.cs_in, "this");
 
 	List<String> default_args_doc;
@@ -1257,9 +1085,9 @@ Error BindingsGenerator::_generate_cs_method(const BindingsGenerator::TypeInterf
 
 	// Generate method
 	{
-		if (p_itype.is_object_type && !p_imethod.is_virtual && !p_imethod.requires_object_call) {
+		if (!p_imethod.is_virtual && !p_imethod.requires_object_call) {
 			p_output.push_back(MEMBER_BEGIN "private static IntPtr ");
-			p_output.push_back(method_bind_field + " = " BINDINGS_CLASS_NATIVECALLS "." ICALL_GET_METHODBIND "(" BINDINGS_NATIVE_NAME_FIELD ", \"");
+			p_output.push_back(method_bind_field + " = Object." ICALL_GET_METHODBIND "(" BINDINGS_NATIVE_NAME_FIELD ", \"");
 			p_output.push_back(p_imethod.name);
 			p_output.push_back("\");\n");
 		}
@@ -1372,19 +1200,31 @@ Error BindingsGenerator::generate_glue(const String &p_output_dir) {
 
 	List<String> output;
 
-	output.push_back("#include \"" GLUE_HEADER_FILE "\"\n"
-					 "\n");
+	output.push_back("/* THIS FILE IS GENERATED DO NOT EDIT */\n");
+	output.push_back("#include \"" GLUE_HEADER_FILE "\"\n");
+	output.push_back("\n#ifdef MONO_GLUE_ENABLED\n");
 
 	generated_icall_funcs.clear();
 
 	for (OrderedHashMap<StringName, TypeInterface>::Element type_elem = obj_types.front(); type_elem; type_elem = type_elem.next()) {
 		const TypeInterface &itype = type_elem.get();
 
+		bool is_derived_type = itype.base_name != StringName();
+
+		if (!is_derived_type) {
+			// Some Object assertions
+			CRASH_COND(itype.cname != name_cache.type_Object);
+			CRASH_COND(!itype.is_instantiable);
+			CRASH_COND(itype.api_type != ClassDB::API_CORE);
+			CRASH_COND(itype.is_reference);
+			CRASH_COND(itype.is_singleton);
+		}
+
 		List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
 
 		OS::get_singleton()->print(String("Generating " + itype.name + "...\n").utf8());
 
-		String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor");
+		String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor"); // Used only for derived types
 
 		for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
 			const MethodInterface &imethod = E->get();
@@ -1409,7 +1249,7 @@ Error BindingsGenerator::generate_glue(const String &p_output_dir) {
 			output.push_back("\");\n" CLOSE_BLOCK "\n");
 		}
 
-		if (itype.is_instantiable) {
+		if (is_derived_type && itype.is_instantiable) {
 			InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
 
 			if (!find_icall_by_name(ctor_icall.name, custom_icalls))
@@ -1426,7 +1266,7 @@ Error BindingsGenerator::generate_glue(const String &p_output_dir) {
 		}
 	}
 
-	output.push_back("namespace GodotSharpBindings\n" OPEN_BLOCK);
+	output.push_back("namespace GodotSharpBindings\n" OPEN_BLOCK "\n");
 
 	output.push_back("uint64_t get_core_api_hash() { return ");
 	output.push_back(String::num_uint64(GDMono::get_singleton()->get_api_core_hash()) + "; }\n");
@@ -1438,11 +1278,9 @@ Error BindingsGenerator::generate_glue(const String &p_output_dir) {
 
 	output.push_back("uint32_t get_bindings_version() { return ");
 	output.push_back(String::num_uint64(BINDINGS_GENERATOR_VERSION) + "; }\n");
-	output.push_back("uint32_t get_cs_glue_version() { return ");
-	output.push_back(String::num_uint64(CS_GLUE_VERSION) + "; }\n");
 
-	output.push_back("void register_generated_icalls() " OPEN_BLOCK);
-	output.push_back("\tgodot_register_header_icalls();");
+	output.push_back("\nvoid register_generated_icalls() " OPEN_BLOCK);
+	output.push_back("\tgodot_register_glue_header_icalls();\n");
 
 #define ADD_INTERNAL_CALL_REGISTRATION(m_icall)                                                                 \
 	{                                                                                                           \
@@ -1505,12 +1343,11 @@ Error BindingsGenerator::generate_glue(const String &p_output_dir) {
 		output.push_back("#endif\n");
 	}
 
-	for (const List<InternalCall>::Element *E = builtin_method_icalls.front(); E; E = E->next())
-		ADD_INTERNAL_CALL_REGISTRATION(E->get());
-
 #undef ADD_INTERNAL_CALL_REGISTRATION
 
-	output.push_back(CLOSE_BLOCK "}\n");
+	output.push_back(CLOSE_BLOCK "\n} // namespace GodotSharpBindings\n");
+
+	output.push_back("\n#endif // MONO_GLUE_ENABLED\n");
 
 	Error save_err = _save_file(path_join(p_output_dir, "mono_glue.gen.cpp"), output);
 	if (save_err != OK)
@@ -1525,10 +1362,6 @@ uint32_t BindingsGenerator::get_version() {
 	return BINDINGS_GENERATOR_VERSION;
 }
 
-uint32_t BindingsGenerator::get_cs_glue_version() {
-	return CS_GLUE_VERSION;
-}
-
 Error BindingsGenerator::_save_file(const String &p_path, const List<String> &p_content) {
 
 	FileAccessRef file = FileAccess::open(p_path, FileAccess::WRITE);
@@ -1591,9 +1424,6 @@ Error BindingsGenerator::_generate_glue_method(const BindingsGenerator::TypeInte
 		i++;
 	}
 
-	if (!p_itype.is_object_type)
-		return OK; // no auto-generated icall functions for builtin types
-
 	const Map<const MethodInterface *, const InternalCall *>::Element *match = method_icalls_map.find(&p_imethod);
 	ERR_FAIL_NULL_V(match, ERR_BUG);
 
@@ -1628,7 +1458,7 @@ Error BindingsGenerator::_generate_glue_method(const BindingsGenerator::TypeInte
 			}
 
 			p_output.push_back("\t" + ptrcall_return_type);
-			p_output.push_back(" " LOCAL_RET);
+			p_output.push_back(" " C_LOCAL_RET);
 			p_output.push_back(initialization + ";\n");
 			p_output.push_back("\tERR_FAIL_NULL_V(" CS_PARAM_INSTANCE);
 			p_output.push_back(fail_ret);
@@ -1678,7 +1508,7 @@ Error BindingsGenerator::_generate_glue_method(const BindingsGenerator::TypeInte
 			p_output.push_back("\tVariant::CallError vcall_error;\n\t");
 
 			if (!ret_void)
-				p_output.push_back(LOCAL_RET " = ");
+				p_output.push_back(C_LOCAL_RET " = ");
 
 			p_output.push_back(CS_PARAM_METHODBIND "->call(" CS_PARAM_INSTANCE ", ");
 			p_output.push_back(p_imethod.arguments.size() ? "(const Variant**)" C_LOCAL_PTRCALL_ARGS ".ptr()" : "NULL");
@@ -1686,14 +1516,14 @@ Error BindingsGenerator::_generate_glue_method(const BindingsGenerator::TypeInte
 		} else {
 			p_output.push_back("\t" CS_PARAM_METHODBIND "->ptrcall(" CS_PARAM_INSTANCE ", ");
 			p_output.push_back(p_imethod.arguments.size() ? C_LOCAL_PTRCALL_ARGS ", " : "NULL, ");
-			p_output.push_back(!ret_void ? "&" LOCAL_RET ");\n" : "NULL);\n");
+			p_output.push_back(!ret_void ? "&" C_LOCAL_RET ");\n" : "NULL);\n");
 		}
 
 		if (!ret_void) {
 			if (return_type->c_out.empty())
-				p_output.push_back("\treturn " LOCAL_RET ";\n");
+				p_output.push_back("\treturn " C_LOCAL_RET ";\n");
 			else
-				p_output.push_back(sformat(return_type->c_out, return_type->c_type_out, LOCAL_RET, return_type->name));
+				p_output.push_back(sformat(return_type->c_out, return_type->c_type_out, C_LOCAL_RET, return_type->name));
 		}
 
 		p_output.push_back(CLOSE_BLOCK "\n");
@@ -1752,9 +1582,6 @@ const BindingsGenerator::TypeInterface *BindingsGenerator::_get_type_or_placehol
 	return &placeholder_types.insert(placeholder.cname, placeholder)->get();
 }
 
-static void _create_constant_interface_from(const StringName &p_constant, const DocData::ClassDoc &p_classdoc) {
-}
-
 void BindingsGenerator::_populate_object_type_interfaces() {
 
 	obj_types.clear();
@@ -1889,9 +1716,6 @@ void BindingsGenerator::_populate_object_type_interfaces() {
 				if (virtual_method_list.find(method_info)) {
 					// A virtual method without the virtual flag. This is a special case.
 
-					// This type of method can only be found in Object derived types.
-					ERR_FAIL_COND(!itype.is_object_type);
-
 					// There is no method bind, so let's fallback to Godot's object.Call(string, params)
 					imethod.requires_object_call = true;
 
@@ -2273,13 +2097,6 @@ void BindingsGenerator::_populate_builtin_type_interfaces() {
 	itype.cs_out = "return new %1(%0);";
 	itype.im_type_in = "IntPtr";
 	itype.im_type_out = "IntPtr";
-	_populate_builtin_type(itype, Variant::NODE_PATH);
-	extra_members.insert(itype.cname, MEMBER_BEGIN "public NodePath() : this(string.Empty) {}\n" MEMBER_BEGIN "public NodePath(string path)\n" OPEN_BLOCK_L2
-												   "this." BINDINGS_PTR_FIELD " = NativeCalls.godot_icall_NodePath_Ctor(path);\n" CLOSE_BLOCK_L2
-														   MEMBER_BEGIN "public static implicit operator NodePath(string from)\n" OPEN_BLOCK_L2 "return new NodePath(from);\n" CLOSE_BLOCK_L2
-																   MEMBER_BEGIN "public static implicit operator string(NodePath from)\n" OPEN_BLOCK_L2
-												   "return NativeCalls." ICALL_PREFIX "NodePath_operator_String(NodePath." CS_SMETHOD_GETINSTANCE "(from));\n" CLOSE_BLOCK_L2
-														   MEMBER_BEGIN "public override string ToString()\n" OPEN_BLOCK_L2 "return (string)this;\n" CLOSE_BLOCK_L2);
 	builtin_types.insert(itype.cname, itype);
 
 	// RID
@@ -2296,9 +2113,6 @@ void BindingsGenerator::_populate_builtin_type_interfaces() {
 	itype.cs_out = "return new %1(%0);";
 	itype.im_type_in = "IntPtr";
 	itype.im_type_out = "IntPtr";
-	_populate_builtin_type(itype, Variant::_RID);
-	extra_members.insert(itype.cname, MEMBER_BEGIN "internal RID()\n" OPEN_BLOCK_L2
-												   "this." BINDINGS_PTR_FIELD " = IntPtr.Zero;\n" CLOSE_BLOCK_L2);
 	builtin_types.insert(itype.cname, itype);
 
 	// Variant
@@ -2413,60 +2227,6 @@ void BindingsGenerator::_populate_builtin_type_interfaces() {
 	builtin_types.insert(itype.cname, itype);
 }
 
-void BindingsGenerator::_populate_builtin_type(TypeInterface &r_itype, Variant::Type vtype) {
-
-	Variant::CallError cerror;
-	Variant v = Variant::construct(vtype, NULL, 0, cerror);
-
-	List<MethodInfo> method_list;
-	v.get_method_list(&method_list);
-	method_list.sort();
-
-	for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
-		MethodInfo &mi = E->get();
-		MethodInterface imethod;
-
-		imethod.name = mi.name;
-		imethod.cname = imethod.name;
-		imethod.proxy_name = escape_csharp_keyword(snake_to_pascal_case(mi.name));
-
-		for (int i = 0; i < mi.arguments.size(); i++) {
-			ArgumentInterface iarg;
-			PropertyInfo pi = mi.arguments[i];
-
-			iarg.name = pi.name;
-
-			if (pi.type == Variant::NIL)
-				iarg.type.cname = name_cache.type_Variant;
-			else
-				iarg.type.cname = Variant::get_type_name(pi.type);
-
-			if ((mi.default_arguments.size() - mi.arguments.size() + i) >= 0)
-				_default_argument_from_variant(Variant::construct(pi.type, NULL, 0, cerror), iarg);
-
-			imethod.add_argument(iarg);
-		}
-
-		if (mi.return_val.type == Variant::NIL) {
-			if (mi.return_val.name != "")
-				imethod.return_type.cname = name_cache.type_Variant;
-		} else {
-			imethod.return_type.cname = Variant::get_type_name(mi.return_val.type);
-		}
-
-		if (r_itype.class_doc) {
-			for (int i = 0; i < r_itype.class_doc->methods.size(); i++) {
-				if (r_itype.class_doc->methods[i].name == imethod.name) {
-					imethod.method_doc = &r_itype.class_doc->methods[i];
-					break;
-				}
-			}
-		}
-
-		r_itype.methods.push_back(imethod);
-	}
-}
-
 void BindingsGenerator::_populate_global_constants() {
 
 	int global_constants_count = GlobalConstants::get_global_constant_count();
@@ -2564,15 +2324,13 @@ void BindingsGenerator::initialize() {
 
 	_populate_global_constants();
 
-	// Populate internal calls (after populating type interfaces and global constants)
+	// Generate internal calls (after populating type interfaces and global constants)
 
-	_generate_header_icalls();
+	core_custom_icalls.clear();
+	editor_custom_icalls.clear();
 
 	for (OrderedHashMap<StringName, TypeInterface>::Element E = obj_types.front(); E; E = E.next())
 		_generate_method_icalls(E.get());
-
-	_generate_method_icalls(builtin_types["NodePath"]);
-	_generate_method_icalls(builtin_types["RID"]);
 }
 
 void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args) {
diff --git a/modules/mono/editor/bindings_generator.h b/modules/mono/editor/bindings_generator.h
index 735e7ce7cc..16341e5857 100644
--- a/modules/mono/editor/bindings_generator.h
+++ b/modules/mono/editor/bindings_generator.h
@@ -456,10 +456,7 @@ class BindingsGenerator {
 	List<EnumInterface> global_enums;
 	List<ConstantInterface> global_constants;
 
-	Map<StringName, String> extra_members;
-
 	List<InternalCall> method_icalls;
-	List<InternalCall> builtin_method_icalls;
 	Map<const MethodInterface *, const InternalCall *> method_icalls_map;
 
 	List<const InternalCall *> generated_icall_funcs;
@@ -518,14 +515,12 @@ class BindingsGenerator {
 
 	String _determine_enum_prefix(const EnumInterface &p_ienum);
 
-	void _generate_header_icalls();
 	void _generate_method_icalls(const TypeInterface &p_itype);
 
 	const TypeInterface *_get_type_or_null(const TypeReference &p_typeref);
 	const TypeInterface *_get_type_or_placeholder(const TypeReference &p_typeref);
 
 	void _default_argument_from_variant(const Variant &p_val, ArgumentInterface &r_iarg);
-	void _populate_builtin_type(TypeInterface &r_itype, Variant::Type vtype);
 
 	void _populate_object_type_interfaces();
 	void _populate_builtin_type_interfaces();
@@ -557,7 +552,6 @@ public:
 	Error generate_glue(const String &p_output_dir);
 
 	static uint32_t get_version();
-	static uint32_t get_cs_glue_version();
 
 	void initialize();
 
diff --git a/modules/mono/editor/godotsharp_builds.cpp b/modules/mono/editor/godotsharp_builds.cpp
index 2faab1718d..b01f8e66c3 100644
--- a/modules/mono/editor/godotsharp_builds.cpp
+++ b/modules/mono/editor/godotsharp_builds.cpp
@@ -30,8 +30,10 @@
 
 #include "godotsharp_builds.h"
 
+#include "core/vector.h"
 #include "main/main.h"
 
+#include "../glue/cs_glue_version.gen.h"
 #include "../godotsharp_dirs.h"
 #include "../mono_gd/gd_mono_class.h"
 #include "../mono_gd/gd_mono_marshal.h"
@@ -50,6 +52,16 @@ void godot_icall_BuildInstance_ExitCallback(MonoString *p_solution, MonoString *
 	GodotSharpBuilds::get_singleton()->build_exit_callback(MonoBuildInfo(solution, config), p_exit_code);
 }
 
+static Vector<const char *> _get_msbuild_hint_dirs() {
+	Vector<const char *> ret;
+#ifdef OSX_ENABLED
+	ret.push_back("/Library/Frameworks/Mono.framework/Versions/Current/bin/");
+	ret.push_back("/usr/local/var/homebrew/linked/mono/bin/");
+#endif
+	ret.push_back("/opt/novell/mono/bin/");
+	return ret;
+}
+
 #ifdef UNIX_ENABLED
 String _find_build_engine_on_unix(const String &p_name) {
 	String ret = path_which(p_name);
@@ -61,15 +73,9 @@ String _find_build_engine_on_unix(const String &p_name) {
 	if (ret_fallback.length())
 		return ret_fallback;
 
-	const char *locations[] = {
-#ifdef OSX_ENABLED
-		"/Library/Frameworks/Mono.framework/Versions/Current/bin/",
-		"/usr/local/var/homebrew/linked/mono/bin/",
-#endif
-		"/opt/novell/mono/bin/"
-	};
+	static Vector<const char *> locations = _get_msbuild_hint_dirs();
 
-	for (int i = 0; i < sizeof(locations) / sizeof(const char *); i++) {
+	for (int i = 0; i < locations.size(); i++) {
 		String hint_path = locations[i] + p_name;
 
 		if (FileAccess::exists(hint_path)) {
@@ -263,7 +269,7 @@ String GodotSharpBuilds::_api_folder_name(APIAssembly::Type p_api_type) {
 								GDMono::get_singleton()->get_api_editor_hash();
 	return String::num_uint64(api_hash) +
 		   "_" + String::num_uint64(BindingsGenerator::get_version()) +
-		   "_" + String::num_uint64(BindingsGenerator::get_cs_glue_version());
+		   "_" + String::num_uint64(CS_GLUE_VERSION);
 }
 
 bool GodotSharpBuilds::make_api_sln(APIAssembly::Type p_api_type) {
diff --git a/modules/mono/editor/mono_bottom_panel.cpp b/modules/mono/editor/mono_bottom_panel.cpp
index 9317550d28..ecc3e4c59e 100644
--- a/modules/mono/editor/mono_bottom_panel.cpp
+++ b/modules/mono/editor/mono_bottom_panel.cpp
@@ -53,9 +53,9 @@ void MonoBottomPanel::_update_build_tabs_list() {
 
 			build_tabs_list->add_item(item_name, tab->get_icon_texture());
 
-			String item_tooltip = String("Solution: ") + tab->build_info.solution;
-			item_tooltip += String("\nConfiguration: ") + tab->build_info.configuration;
-			item_tooltip += String("\nStatus: ");
+			String item_tooltip = "Solution: " + tab->build_info.solution;
+			item_tooltip += "\nConfiguration: " + tab->build_info.configuration;
+			item_tooltip += "\nStatus: ";
 
 			if (tab->build_exited) {
 				item_tooltip += tab->build_result == MonoBuildTab::RESULT_SUCCESS ? "Succeeded" : "Errored";
diff --git a/modules/mono/glue/base_object_glue.cpp b/modules/mono/glue/base_object_glue.cpp
new file mode 100644
index 0000000000..d718c3cc61
--- /dev/null
+++ b/modules/mono/glue/base_object_glue.cpp
@@ -0,0 +1,154 @@
+/*************************************************************************/
+/*  base_object_glue.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "base_object_glue.h"
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/reference.h"
+#include "core/string_db.h"
+
+#include "../csharp_script.h"
+#include "../mono_gd/gd_mono_internals.h"
+#include "../mono_gd/gd_mono_utils.h"
+#include "../signal_awaiter_utils.h"
+
+Object *godot_icall_Object_Ctor(MonoObject *p_obj) {
+	Object *instance = memnew(Object);
+	GDMonoInternals::tie_managed_to_unmanaged(p_obj, instance);
+	return instance;
+}
+
+void godot_icall_Object_Disposed(MonoObject *p_obj, Object *p_ptr) {
+#ifdef DEBUG_ENABLED
+	CRASH_COND(p_ptr == NULL);
+#endif
+
+	if (p_ptr->get_script_instance()) {
+		CSharpInstance *cs_instance = CAST_CSHARP_INSTANCE(p_ptr->get_script_instance());
+		if (cs_instance) {
+			cs_instance->mono_object_disposed(p_obj);
+			p_ptr->set_script_instance(NULL);
+			return;
+		}
+	}
+
+	void *data = p_ptr->get_script_instance_binding(CSharpLanguage::get_singleton()->get_language_index());
+
+	if (data) {
+		Ref<MonoGCHandle> &gchandle = ((Map<Object *, CSharpScriptBinding>::Element *)data)->get().gchandle;
+		if (gchandle.is_valid()) {
+			CSharpLanguage::release_script_gchandle(p_obj, gchandle);
+		}
+	}
+}
+
+void godot_icall_Reference_Disposed(MonoObject *p_obj, Object *p_ptr, bool p_is_finalizer) {
+#ifdef DEBUG_ENABLED
+	CRASH_COND(p_ptr == NULL);
+	// This is only called with Reference derived classes
+	CRASH_COND(!Object::cast_to<Reference>(p_ptr));
+#endif
+
+	Reference *ref = static_cast<Reference *>(p_ptr);
+
+	if (ref->get_script_instance()) {
+		CSharpInstance *cs_instance = CAST_CSHARP_INSTANCE(ref->get_script_instance());
+		if (cs_instance) {
+			bool r_owner_deleted;
+			cs_instance->mono_object_disposed_baseref(p_obj, p_is_finalizer, r_owner_deleted);
+			if (!r_owner_deleted && !p_is_finalizer) {
+				// If the native instance is still alive and Dispose() was called
+				// (instead of the finalizer), then we remove the script instance.
+				ref->set_script_instance(NULL);
+			}
+			return;
+		}
+	}
+
+	// Unsafe refcount decrement. The managed instance also counts as a reference.
+	// See: CSharpLanguage::alloc_instance_binding_data(Object *p_object)
+	if (ref->unreference()) {
+		memdelete(ref);
+	} else {
+		void *data = ref->get_script_instance_binding(CSharpLanguage::get_singleton()->get_language_index());
+
+		if (data) {
+			Ref<MonoGCHandle> &gchandle = ((Map<Object *, CSharpScriptBinding>::Element *)data)->get().gchandle;
+			if (gchandle.is_valid()) {
+				CSharpLanguage::release_script_gchandle(p_obj, gchandle);
+			}
+		}
+	}
+}
+
+MethodBind *godot_icall_Object_ClassDB_get_method(MonoString *p_type, MonoString *p_method) {
+	StringName type(GDMonoMarshal::mono_string_to_godot(p_type));
+	StringName method(GDMonoMarshal::mono_string_to_godot(p_method));
+	return ClassDB::get_method(type, method);
+}
+
+MonoObject *godot_icall_Object_weakref(Object *p_obj) {
+	if (!p_obj)
+		return NULL;
+
+	Ref<WeakRef> wref;
+	Reference *ref = Object::cast_to<Reference>(p_obj);
+
+	if (ref) {
+		REF r = ref;
+		if (!r.is_valid())
+			return NULL;
+
+		wref.instance();
+		wref->set_ref(r);
+	} else {
+		wref.instance();
+		wref->set_obj(p_obj);
+	}
+
+	return GDMonoUtils::create_managed_for_godot_object(CACHED_CLASS(WeakRef), Reference::get_class_static(), Object::cast_to<Object>(wref.ptr()));
+}
+
+Error godot_icall_SignalAwaiter_connect(Object *p_source, MonoString *p_signal, Object *p_target, MonoObject *p_awaiter) {
+	String signal = GDMonoMarshal::mono_string_to_godot(p_signal);
+	return SignalAwaiterUtils::connect_signal_awaiter(p_source, signal, p_target, p_awaiter);
+}
+
+void godot_register_object_icalls() {
+	mono_add_internal_call("Godot.Object::godot_icall_Object_Ctor", (void *)godot_icall_Object_Ctor);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_Disposed", (void *)godot_icall_Object_Disposed);
+	mono_add_internal_call("Godot.Object::godot_icall_Reference_Disposed", (void *)godot_icall_Reference_Disposed);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_ClassDB_get_method", (void *)godot_icall_Object_ClassDB_get_method);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_weakref", (void *)godot_icall_Object_weakref);
+	mono_add_internal_call("Godot.SignalAwaiter::godot_icall_SignalAwaiter_connect", (void *)godot_icall_SignalAwaiter_connect);
+}
+
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/base_object_glue.h b/modules/mono/glue/base_object_glue.h
new file mode 100644
index 0000000000..2d4d66ebb8
--- /dev/null
+++ b/modules/mono/glue/base_object_glue.h
@@ -0,0 +1,59 @@
+/*************************************************************************/
+/*  base_object_glue.h                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef BASE_OBJECT_GLUE_H
+#define BASE_OBJECT_GLUE_H
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/class_db.h"
+#include "core/object.h"
+
+#include "../mono_gd/gd_mono_marshal.h"
+
+Object *godot_icall_Object_Ctor(MonoObject *p_obj);
+
+void godot_icall_Object_Disposed(MonoObject *p_obj, Object *p_ptr);
+
+void godot_icall_Reference_Disposed(MonoObject *p_obj, Object *p_ptr, bool p_is_finalizer);
+
+MethodBind *godot_icall_Object_ClassDB_get_method(MonoString *p_type, MonoString *p_method);
+
+MonoObject *godot_icall_Object_weakref(Object *p_obj);
+
+Error godot_icall_SignalAwaiter_connect(Object *p_source, MonoString *p_signal, Object *p_target, MonoObject *p_awaiter);
+
+// Register internal calls
+
+void godot_register_object_icalls();
+
+#endif // MONO_GLUE_ENABLED
+
+#endif // BASE_OBJECT_GLUE_H
diff --git a/modules/mono/glue/collections_glue.cpp b/modules/mono/glue/collections_glue.cpp
index bb218b49b7..d9dba1c60d 100644
--- a/modules/mono/glue/collections_glue.cpp
+++ b/modules/mono/glue/collections_glue.cpp
@@ -30,9 +30,12 @@
 
 #include "collections_glue.h"
 
+#ifdef MONO_GLUE_ENABLED
+
 #include <mono/metadata/exception.h>
 
 #include "../mono_gd/gd_mono_class.h"
+#include "../mono_gd/gd_mono_utils.h"
 
 Array *godot_icall_Array_Ctor() {
 	return memnew(Array);
@@ -238,3 +241,5 @@ void godot_register_collections_icalls() {
 	mono_add_internal_call("Godot.Collections.Dictionary::godot_icall_Dictionary_Remove", (void *)godot_icall_Dictionary_Remove);
 	mono_add_internal_call("Godot.Collections.Dictionary::godot_icall_Dictionary_TryGetValue", (void *)godot_icall_Dictionary_TryGetValue);
 }
+
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/collections_glue.h b/modules/mono/glue/collections_glue.h
index eb5ecfb725..fa8e4c28aa 100644
--- a/modules/mono/glue/collections_glue.h
+++ b/modules/mono/glue/collections_glue.h
@@ -31,6 +31,8 @@
 #ifndef COLLECTIONS_GLUE_H
 #define COLLECTIONS_GLUE_H
 
+#ifdef MONO_GLUE_ENABLED
+
 #include "core/array.h"
 
 #include "../mono_gd/gd_mono_marshal.h"
@@ -97,4 +99,6 @@ bool godot_icall_Dictionary_TryGetValue(Dictionary *ptr, MonoObject *key, MonoOb
 
 void godot_register_collections_icalls();
 
+#endif // MONO_GLUE_ENABLED
+
 #endif // COLLECTIONS_GLUE_H
diff --git a/modules/mono/glue/cs_files/Array.cs b/modules/mono/glue/cs_files/Array.cs
index 2f0185b1e3..c80cb7cc83 100644
--- a/modules/mono/glue/cs_files/Array.cs
+++ b/modules/mono/glue/cs_files/Array.cs
@@ -30,45 +30,6 @@ namespace Godot.Collections
 
     public class Array : IList<object>, ICollection<object>, IEnumerable<object>, IDisposable
     {
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static IntPtr godot_icall_Array_Ctor();
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_Dtor(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static object godot_icall_Array_At(IntPtr ptr, int index);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_SetAt(IntPtr ptr, int index, object value);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static int godot_icall_Array_Count(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_Add(IntPtr ptr, object item);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_Clear(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Array_Contains(IntPtr ptr, object item);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_CopyTo(IntPtr ptr, object[] array, int arrayIndex);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static int godot_icall_Array_IndexOf(IntPtr ptr, object item);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_Insert(IntPtr ptr, int index, object item);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Array_Remove(IntPtr ptr, object item);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Array_RemoveAt(IntPtr ptr, int index);
-
         ArraySafeHandle safeHandle;
         bool disposed = false;
 
@@ -94,11 +55,6 @@ namespace Godot.Collections
 
         public void Dispose()
         {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
             if (disposed)
                 return;
 
@@ -200,6 +156,45 @@ namespace Godot.Collections
         {
             return GetEnumerator();
         }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Array_Ctor();
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Dtor(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_Array_At(IntPtr ptr, int index);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_SetAt(IntPtr ptr, int index, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_Array_Count(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Add(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Clear(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Array_Contains(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_CopyTo(IntPtr ptr, object[] array, int arrayIndex);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_Array_IndexOf(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Insert(IntPtr ptr, int index, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Array_Remove(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_RemoveAt(IntPtr ptr, int index);
     }
 
     public class Array<T> : IList<T>, ICollection<T>, IEnumerable<T>
diff --git a/modules/mono/glue/cs_files/Dictionary.cs b/modules/mono/glue/cs_files/Dictionary.cs
index 64cb9f935d..523e48c31a 100644
--- a/modules/mono/glue/cs_files/Dictionary.cs
+++ b/modules/mono/glue/cs_files/Dictionary.cs
@@ -34,48 +34,6 @@ namespace Godot.Collections
         IEnumerable<KeyValuePair<object, object>>,
         IDisposable
     {
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static IntPtr godot_icall_Dictionary_Ctor();
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Dictionary_Dtor(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static object godot_icall_Dictionary_GetValue(IntPtr ptr, object key);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Dictionary_SetValue(IntPtr ptr, object key, object value);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static IntPtr godot_icall_Dictionary_Keys(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static IntPtr godot_icall_Dictionary_Values(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static int godot_icall_Dictionary_Count(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Dictionary_Add(IntPtr ptr, object key, object value);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static void godot_icall_Dictionary_Clear(IntPtr ptr);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Dictionary_Contains(IntPtr ptr, object key, object value);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Dictionary_ContainsKey(IntPtr ptr, object key);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Dictionary_RemoveKey(IntPtr ptr, object key);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Dictionary_Remove(IntPtr ptr, object key, object value);
-
-        [MethodImpl(MethodImplOptions.InternalCall)]
-        internal extern static bool godot_icall_Dictionary_TryGetValue(IntPtr ptr, object key, out object value);
-
         DictionarySafeHandle safeHandle;
         bool disposed = false;
 
@@ -101,11 +59,6 @@ namespace Godot.Collections
 
         public void Dispose()
         {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
             if (disposed)
                 return;
 
@@ -240,8 +193,49 @@ namespace Godot.Collections
         {
             return GetEnumerator();
         }
-    }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Dictionary_Ctor();
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Dictionary_Dtor(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_Dictionary_GetValue(IntPtr ptr, object key);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Dictionary_SetValue(IntPtr ptr, object key, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Dictionary_Keys(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Dictionary_Values(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_Dictionary_Count(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Dictionary_Add(IntPtr ptr, object key, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Dictionary_Clear(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Dictionary_Contains(IntPtr ptr, object key, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Dictionary_ContainsKey(IntPtr ptr, object key);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Dictionary_RemoveKey(IntPtr ptr, object key);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Dictionary_Remove(IntPtr ptr, object key, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Dictionary_TryGetValue(IntPtr ptr, object key, out object value);
+    }
 
     public class Dictionary<TKey, TValue> :
         IDictionary<TKey, TValue>,
diff --git a/modules/mono/glue/cs_files/Extensions/ObjectExtensions.cs b/modules/mono/glue/cs_files/Extensions/ObjectExtensions.cs
index 5c9e6609f4..9ef0959750 100644
--- a/modules/mono/glue/cs_files/Extensions/ObjectExtensions.cs
+++ b/modules/mono/glue/cs_files/Extensions/ObjectExtensions.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.CompilerServices;
 
 namespace Godot
 {
@@ -11,7 +12,10 @@ namespace Godot
 
         public static WeakRef WeakRef(Object obj)
         {
-            return NativeCalls.godot_icall_Godot_weakref(Object.GetPtr(obj));
+            return godot_icall_Object_weakref(Object.GetPtr(obj));
         }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static WeakRef godot_icall_Object_weakref(IntPtr obj);
     }
 }
diff --git a/modules/mono/glue/cs_files/GD.cs b/modules/mono/glue/cs_files/GD.cs
index 0a5d703f27..264be23588 100644
--- a/modules/mono/glue/cs_files/GD.cs
+++ b/modules/mono/glue/cs_files/GD.cs
@@ -1,11 +1,12 @@
 using System;
+using System.Runtime.CompilerServices;
 #if REAL_T_IS_DOUBLE
 using real_t = System.Double;
 #else
 using real_t = System.Single;
 #endif
 
-// TODO: Add comments describing what this class does. It is not obvious. 
+// TODO: Add comments describing what this class does. It is not obvious.
 
 namespace Godot
 {
@@ -13,12 +14,12 @@ namespace Godot
     {
         public static object Bytes2Var(byte[] bytes)
         {
-            return NativeCalls.godot_icall_Godot_bytes2var(bytes);
+            return godot_icall_GD_bytes2var(bytes);
         }
 
         public static object Convert(object what, int type)
         {
-            return NativeCalls.godot_icall_Godot_convert(what, type);
+            return godot_icall_GD_convert(what, type);
         }
 
         public static real_t Db2Linear(real_t db)
@@ -46,12 +47,12 @@ namespace Godot
 
         public static int Hash(object var)
         {
-            return NativeCalls.godot_icall_Godot_hash(var);
+            return godot_icall_GD_hash(var);
         }
 
         public static Object InstanceFromId(int instanceId)
         {
-            return NativeCalls.godot_icall_Godot_instance_from_id(instanceId);
+            return godot_icall_GD_instance_from_id(instanceId);
         }
 
         public static real_t Linear2Db(real_t linear)
@@ -71,7 +72,7 @@ namespace Godot
 
         public static void Print(params object[] what)
         {
-            NativeCalls.godot_icall_Godot_print(what);
+            godot_icall_GD_print(what);
         }
 
         public static void PrintStack()
@@ -81,22 +82,22 @@ namespace Godot
 
         public static void PrintErr(params object[] what)
         {
-            NativeCalls.godot_icall_Godot_printerr(what);
+            godot_icall_GD_printerr(what);
         }
 
         public static void PrintRaw(params object[] what)
         {
-            NativeCalls.godot_icall_Godot_printraw(what);
+            godot_icall_GD_printraw(what);
         }
 
         public static void PrintS(params object[] what)
         {
-            NativeCalls.godot_icall_Godot_prints(what);
+            godot_icall_GD_prints(what);
         }
 
         public static void PrintT(params object[] what)
         {
-            NativeCalls.godot_icall_Godot_printt(what);
+            godot_icall_GD_printt(what);
         }
 
         public static int[] Range(int length)
@@ -165,32 +166,77 @@ namespace Godot
 
         public static void Seed(int seed)
         {
-            NativeCalls.godot_icall_Godot_seed(seed);
+            godot_icall_GD_seed(seed);
         }
 
         public static string Str(params object[] what)
         {
-            return NativeCalls.godot_icall_Godot_str(what);
+            return godot_icall_GD_str(what);
         }
 
         public static object Str2Var(string str)
         {
-            return NativeCalls.godot_icall_Godot_str2var(str);
+            return godot_icall_GD_str2var(str);
         }
 
         public static bool TypeExists(string type)
         {
-            return NativeCalls.godot_icall_Godot_type_exists(type);
+            return godot_icall_GD_type_exists(type);
         }
 
         public static byte[] Var2Bytes(object var)
         {
-            return NativeCalls.godot_icall_Godot_var2bytes(var);
+            return godot_icall_GD_var2bytes(var);
         }
 
         public static string Var2Str(object var)
         {
-            return NativeCalls.godot_icall_Godot_var2str(var);
+            return godot_icall_GD_var2str(var);
         }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_GD_bytes2var(byte[] bytes);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_GD_convert(object what, int type);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_GD_hash(object var);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static Object godot_icall_GD_instance_from_id(int instance_id);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_print(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_printerr(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_printraw(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_prints(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_printt(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_GD_seed(int seed);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_GD_str(object[] what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_GD_str2var(string str);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_GD_type_exists(string type);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static byte[] godot_icall_GD_var2bytes(object what);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_GD_var2str(object var);
     }
 }
diff --git a/modules/mono/glue/cs_files/NodePath.cs b/modules/mono/glue/cs_files/NodePath.cs
new file mode 100644
index 0000000000..2c89bec87f
--- /dev/null
+++ b/modules/mono/glue/cs_files/NodePath.cs
@@ -0,0 +1,147 @@
+using System;
+using System.Runtime.CompilerServices;
+
+namespace Godot
+{
+    public partial class NodePath : IDisposable
+    {
+        private bool disposed = false;
+
+        internal IntPtr ptr;
+
+        internal static IntPtr GetPtr(NodePath instance)
+        {
+            return instance == null ? IntPtr.Zero : instance.ptr;
+        }
+
+        ~NodePath()
+        {
+            Dispose(false);
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposed)
+                return;
+
+            if (ptr != IntPtr.Zero)
+            {
+                godot_icall_NodePath_Dtor(ptr);
+                ptr = IntPtr.Zero;
+            }
+
+            disposed = true;
+        }
+
+        internal NodePath(IntPtr ptr)
+        {
+            this.ptr = ptr;
+        }
+
+        public IntPtr NativeInstance
+        {
+            get { return ptr; }
+        }
+
+        public NodePath() : this(string.Empty) {}
+
+        public NodePath(string path)
+        {
+            this.ptr = godot_icall_NodePath_Ctor(path);
+        }
+
+        public static implicit operator NodePath(string from)
+        {
+            return new NodePath(from);
+        }
+
+        public static implicit operator string(NodePath from)
+        {
+            return godot_icall_NodePath_operator_String(NodePath.GetPtr(from));
+        }
+
+        public override string ToString()
+        {
+            return (string)this;
+        }
+
+        public NodePath GetAsPropertyPath()
+        {
+            return new NodePath(godot_icall_NodePath_get_as_property_path(NodePath.GetPtr(this)));
+        }
+
+        public string GetConcatenatedSubnames()
+        {
+            return godot_icall_NodePath_get_concatenated_subnames(NodePath.GetPtr(this));
+        }
+
+        public string GetName(int idx)
+        {
+            return godot_icall_NodePath_get_name(NodePath.GetPtr(this), idx);
+        }
+
+        public int GetNameCount()
+        {
+            return godot_icall_NodePath_get_name_count(NodePath.GetPtr(this));
+        }
+
+        public string GetSubname(int idx)
+        {
+            return godot_icall_NodePath_get_subname(NodePath.GetPtr(this), idx);
+        }
+
+        public int GetSubnameCount()
+        {
+            return godot_icall_NodePath_get_subname_count(NodePath.GetPtr(this));
+        }
+
+        public bool IsAbsolute()
+        {
+            return godot_icall_NodePath_is_absolute(NodePath.GetPtr(this));
+        }
+
+        public bool IsEmpty()
+        {
+            return godot_icall_NodePath_is_empty(NodePath.GetPtr(this));
+        }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_NodePath_Ctor(string path);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_NodePath_Dtor(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_NodePath_operator_String(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_NodePath_get_as_property_path(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_NodePath_get_concatenated_subnames(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_NodePath_get_name(IntPtr ptr, int arg1);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_NodePath_get_name_count(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_NodePath_get_subname(IntPtr ptr, int arg1);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_NodePath_get_subname_count(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_NodePath_is_absolute(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_NodePath_is_empty(IntPtr ptr);
+    }
+}
diff --git a/modules/mono/glue/cs_files/Object.base.cs b/modules/mono/glue/cs_files/Object.base.cs
new file mode 100644
index 0000000000..30490a715f
--- /dev/null
+++ b/modules/mono/glue/cs_files/Object.base.cs
@@ -0,0 +1,88 @@
+using System;
+using System.Runtime.CompilerServices;
+
+namespace Godot
+{
+    public partial class Object : IDisposable
+    {
+        private bool disposed = false;
+
+        private const string nativeName = "Object";
+
+        internal IntPtr ptr;
+        internal bool memoryOwn;
+
+        public Object() : this(false)
+        {
+            if (ptr == IntPtr.Zero)
+                ptr = godot_icall_Object_Ctor(this);
+        }
+
+        internal Object(bool memoryOwn)
+        {
+            this.memoryOwn = memoryOwn;
+        }
+
+        public IntPtr NativeInstance
+        {
+            get { return ptr; }
+        }
+
+        internal static IntPtr GetPtr(Object instance)
+        {
+            return instance == null ? IntPtr.Zero : instance.ptr;
+        }
+
+        ~Object()
+        {
+            Dispose(false);
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposed)
+                return;
+
+            if (ptr != IntPtr.Zero)
+            {
+                if (memoryOwn)
+                {
+                    memoryOwn = false;
+                    godot_icall_Reference_Disposed(this, ptr, !disposing);
+                }
+                else
+                {
+                    godot_icall_Object_Disposed(this, ptr);
+                }
+
+                this.ptr = IntPtr.Zero;
+            }
+
+            disposed = true;
+        }
+
+        public SignalAwaiter ToSignal(Object source, string signal)
+        {
+            return new SignalAwaiter(source, signal, this);
+        }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Object_Ctor(Object obj);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Object_Disposed(Object obj, IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Reference_Disposed(Object obj, IntPtr ptr, bool isFinalizer);
+
+        // Used by the generated API
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Object_ClassDB_get_method(string type, string method);
+    }
+}
diff --git a/modules/mono/glue/cs_files/RID.cs b/modules/mono/glue/cs_files/RID.cs
new file mode 100644
index 0000000000..b862b8cac0
--- /dev/null
+++ b/modules/mono/glue/cs_files/RID.cs
@@ -0,0 +1,76 @@
+using System;
+using System.Runtime.CompilerServices;
+
+namespace Godot
+{
+    public partial class RID : IDisposable
+    {
+        private bool disposed = false;
+
+        internal IntPtr ptr;
+
+        internal static IntPtr GetPtr(RID instance)
+        {
+            return instance == null ? IntPtr.Zero : instance.ptr;
+        }
+
+        ~RID()
+        {
+            Dispose(false);
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposed)
+                return;
+
+            if (ptr != IntPtr.Zero)
+            {
+                godot_icall_RID_Dtor(ptr);
+                ptr = IntPtr.Zero;
+            }
+
+            disposed = true;
+        }
+
+        internal RID(IntPtr ptr)
+        {
+            this.ptr = ptr;
+        }
+
+        public IntPtr NativeInstance
+        {
+            get { return ptr; }
+        }
+
+        internal RID()
+        {
+            this.ptr = IntPtr.Zero;
+        }
+
+        public RID(Object from)
+        {
+            this.ptr = godot_icall_RID_Ctor(Object.GetPtr(from));
+        }
+
+        public int GetId()
+        {
+            return godot_icall_RID_get_id(RID.GetPtr(this));
+        }
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_RID_Ctor(IntPtr from);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_RID_Dtor(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_RID_get_id(IntPtr ptr);
+    }
+}
diff --git a/modules/mono/glue/cs_files/SignalAwaiter.cs b/modules/mono/glue/cs_files/SignalAwaiter.cs
index c06f6b05c9..9483b6ffb4 100644
--- a/modules/mono/glue/cs_files/SignalAwaiter.cs
+++ b/modules/mono/glue/cs_files/SignalAwaiter.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.CompilerServices;
 
 namespace Godot
 {
@@ -10,12 +11,12 @@ namespace Godot
 
         public SignalAwaiter(Object source, string signal, Object target)
         {
-            NativeCalls.godot_icall_Object_connect_signal_awaiter(
-                Object.GetPtr(source),
-                signal, Object.GetPtr(target), this
-                );
+            godot_icall_SignalAwaiter_connect(Object.GetPtr(source), signal, Object.GetPtr(target), this);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static Error godot_icall_SignalAwaiter_connect(IntPtr source, string signal, IntPtr target, SignalAwaiter awaiter);
+
         public bool IsCompleted
         {
             get
diff --git a/modules/mono/glue/cs_files/StringExtensions.cs b/modules/mono/glue/cs_files/StringExtensions.cs
index cda573f6c5..21c9be98c1 100644
--- a/modules/mono/glue/cs_files/StringExtensions.cs
+++ b/modules/mono/glue/cs_files/StringExtensions.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.Runtime.CompilerServices;
 using System.Security;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -609,17 +610,23 @@ namespace Godot
         // </summary>
         public static byte[] MD5Buffer(this string instance)
         {
-            return NativeCalls.godot_icall_String_md5_buffer(instance);
+            return godot_icall_String_md5_buffer(instance);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static byte[] godot_icall_String_md5_buffer(string str);
+
         // <summary>
         // Return the MD5 hash of the string as a string.
         // </summary>
         public static string MD5Text(this string instance)
         {
-            return NativeCalls.godot_icall_String_md5_text(instance);
+            return godot_icall_String_md5_text(instance);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_String_md5_text(string str);
+
         // <summary>
         // Perform a case-insensitive comparison to another string, return -1 if less, 0 if equal and +1 if greater.
         // </summary>
@@ -752,17 +759,23 @@ namespace Godot
         // </summary>
         public static int RFind(this string instance, string what, int from = -1)
         {
-            return NativeCalls.godot_icall_String_rfind(instance, what, from);
+            return godot_icall_String_rfind(instance, what, from);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_String_rfind(string str, string what, int from);
+
         // <summary>
         // Perform a search for a substring, but start from the end of the string instead of the beginning. Also search case-insensitive.
         // </summary>
         public static int RFindN(this string instance, string what, int from = -1)
         {
-            return NativeCalls.godot_icall_String_rfindn(instance, what, from);
+            return godot_icall_String_rfindn(instance, what, from);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_String_rfindn(string str, string what, int from);
+
         // <summary>
         // Return the right side of the string from a given position.
         // </summary>
@@ -779,17 +792,23 @@ namespace Godot
 
         public static byte[] SHA256Buffer(this string instance)
         {
-            return NativeCalls.godot_icall_String_sha256_buffer(instance);
+            return godot_icall_String_sha256_buffer(instance);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static byte[] godot_icall_String_sha256_buffer(string str);
+
         // <summary>
         // Return the SHA-256 hash of the string as a string.
         // </summary>
         public static string SHA256Text(this string instance)
         {
-            return NativeCalls.godot_icall_String_sha256_text(instance);
+            return godot_icall_String_sha256_text(instance);
         }
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_String_sha256_text(string str);
+
         // <summary>
         // Return the similarity index of the text compared to this string. 1 means totally similar and 0 means totally dissimilar.
         // </summary>
diff --git a/modules/mono/glue/gd_glue.cpp b/modules/mono/glue/gd_glue.cpp
new file mode 100644
index 0000000000..051f42b966
--- /dev/null
+++ b/modules/mono/glue/gd_glue.cpp
@@ -0,0 +1,202 @@
+/*************************************************************************/
+/*  gd_glue.cpp                                                          */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "gd_glue.h"
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/array.h"
+#include "core/io/marshalls.h"
+#include "core/os/os.h"
+#include "core/ustring.h"
+#include "core/variant.h"
+#include "core/variant_parser.h"
+
+#include "../mono_gd/gd_mono_utils.h"
+
+MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes) {
+	Variant ret;
+	PoolByteArray varr = GDMonoMarshal::mono_array_to_PoolByteArray(p_bytes);
+	PoolByteArray::Read r = varr.read();
+	Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
+	if (err != OK) {
+		ret = RTR("Not enough bytes for decoding bytes, or invalid format.");
+	}
+	return GDMonoMarshal::variant_to_mono_object(ret);
+}
+
+MonoObject *godot_icall_GD_convert(MonoObject *p_what, int p_type) {
+	Variant what = GDMonoMarshal::mono_object_to_variant(p_what);
+	const Variant *args[1] = { &what };
+	Variant::CallError ce;
+	Variant ret = Variant::construct(Variant::Type(p_type), args, 1, ce);
+	ERR_FAIL_COND_V(ce.error != Variant::CallError::CALL_OK, NULL);
+	return GDMonoMarshal::variant_to_mono_object(ret);
+}
+
+int godot_icall_GD_hash(MonoObject *p_var) {
+	return GDMonoMarshal::mono_object_to_variant(p_var).hash();
+}
+
+MonoObject *godot_icall_GD_instance_from_id(int p_instance_id) {
+	return GDMonoUtils::unmanaged_get_managed(ObjectDB::get_instance(p_instance_id));
+}
+
+void godot_icall_GD_print(MonoArray *p_what) {
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+	String str;
+	for (int i = 0; i < what.size(); i++)
+		str += what[i].operator String();
+	print_line(str);
+}
+
+void godot_icall_GD_printerr(MonoArray *p_what) {
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+	String str;
+	for (int i = 0; i < what.size(); i++)
+		str += what[i].operator String();
+	OS::get_singleton()->printerr("%s\n", str.utf8().get_data());
+}
+
+void godot_icall_GD_printraw(MonoArray *p_what) {
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+	String str;
+	for (int i = 0; i < what.size(); i++)
+		str += what[i].operator String();
+	OS::get_singleton()->print("%s", str.utf8().get_data());
+}
+
+void godot_icall_GD_prints(MonoArray *p_what) {
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+	String str;
+	for (int i = 0; i < what.size(); i++) {
+		if (i)
+			str += " ";
+		str += what[i].operator String();
+	}
+	print_line(str);
+}
+
+void godot_icall_GD_printt(MonoArray *p_what) {
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+	String str;
+	for (int i = 0; i < what.size(); i++) {
+		if (i)
+			str += "\t";
+		str += what[i].operator String();
+	}
+	print_line(str);
+}
+
+void godot_icall_GD_seed(int p_seed) {
+	Math::seed(p_seed);
+}
+
+MonoString *godot_icall_GD_str(MonoArray *p_what) {
+	String str;
+	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
+
+	for (int i = 0; i < what.size(); i++) {
+		String os = what[i].operator String();
+
+		if (i == 0)
+			str = os;
+		else
+			str += os;
+	}
+
+	return GDMonoMarshal::mono_string_from_godot(str);
+}
+
+MonoObject *godot_icall_GD_str2var(MonoString *p_str) {
+	Variant ret;
+
+	VariantParser::StreamString ss;
+	ss.s = GDMonoMarshal::mono_string_to_godot(p_str);
+
+	String errs;
+	int line;
+	Error err = VariantParser::parse(&ss, ret, errs, line);
+	if (err != OK) {
+		String err_str = "Parse error at line " + itos(line) + ": " + errs;
+		ERR_PRINTS(err_str);
+		ret = err_str;
+	}
+
+	return GDMonoMarshal::variant_to_mono_object(ret);
+}
+
+bool godot_icall_GD_type_exists(MonoString *p_type) {
+	return ClassDB::class_exists(GDMonoMarshal::mono_string_to_godot(p_type));
+}
+
+MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var) {
+	Variant var = GDMonoMarshal::mono_object_to_variant(p_var);
+
+	PoolByteArray barr;
+	int len;
+	Error err = encode_variant(var, NULL, len);
+	ERR_EXPLAIN("Unexpected error encoding variable to bytes, likely unserializable type found (Object or RID).");
+	ERR_FAIL_COND_V(err != OK, NULL);
+
+	barr.resize(len);
+	{
+		PoolByteArray::Write w = barr.write();
+		encode_variant(var, w.ptr(), len);
+	}
+
+	return GDMonoMarshal::PoolByteArray_to_mono_array(barr);
+}
+
+MonoString *godot_icall_GD_var2str(MonoObject *p_var) {
+	String vars;
+	VariantWriter::write_to_string(GDMonoMarshal::mono_object_to_variant(p_var), vars);
+	return GDMonoMarshal::mono_string_from_godot(vars);
+}
+
+void godot_register_gd_icalls() {
+	mono_add_internal_call("Godot.GD::godot_icall_GD_bytes2var", (void *)godot_icall_GD_bytes2var);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_convert", (void *)godot_icall_GD_convert);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_hash", (void *)godot_icall_GD_hash);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_instance_from_id", (void *)godot_icall_GD_instance_from_id);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_print", (void *)godot_icall_GD_print);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_printerr", (void *)godot_icall_GD_printerr);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_printraw", (void *)godot_icall_GD_printraw);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_prints", (void *)godot_icall_GD_prints);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_printt", (void *)godot_icall_GD_printt);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_seed", (void *)godot_icall_GD_seed);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_str", (void *)godot_icall_GD_str);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_str2var", (void *)godot_icall_GD_str2var);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_type_exists", (void *)godot_icall_GD_type_exists);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_var2bytes", (void *)godot_icall_GD_var2bytes);
+	mono_add_internal_call("Godot.GD::godot_icall_GD_var2str", (void *)godot_icall_GD_var2str);
+}
+
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/gd_glue.h b/modules/mono/glue/gd_glue.h
new file mode 100644
index 0000000000..6f846f221d
--- /dev/null
+++ b/modules/mono/glue/gd_glue.h
@@ -0,0 +1,74 @@
+/*************************************************************************/
+/*  gd_glue.h                                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef GD_GLUE_H
+#define GD_GLUE_H
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "../mono_gd/gd_mono_marshal.h"
+
+MonoObject *godot_icall_GD_bytes2var(MonoArray *p_bytes);
+
+MonoObject *godot_icall_GD_convert(MonoObject *p_what, int p_type);
+
+int godot_icall_GD_hash(MonoObject *p_var);
+
+MonoObject *godot_icall_GD_instance_from_id(int p_instance_id);
+
+void godot_icall_GD_print(MonoArray *p_what);
+
+void godot_icall_GD_printerr(MonoArray *p_what);
+
+void godot_icall_GD_printraw(MonoArray *p_what);
+
+void godot_icall_GD_prints(MonoArray *p_what);
+
+void godot_icall_GD_printt(MonoArray *p_what);
+
+void godot_icall_GD_seed(int p_seed);
+
+MonoString *godot_icall_GD_str(MonoArray *p_what);
+
+MonoObject *godot_icall_GD_str2var(MonoString *p_str);
+
+bool godot_icall_GD_type_exists(MonoString *p_type);
+
+MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var);
+
+MonoString *godot_icall_GD_var2str(MonoObject *p_var);
+
+// Register internal calls
+
+void godot_register_gd_icalls();
+
+#endif // MONO_GLUE_ENABLED
+
+#endif // GD_GLUE_H
diff --git a/modules/mono/glue/glue_header.h b/modules/mono/glue/glue_header.h
index 6a6f3062b4..69c5c6dcdb 100644
--- a/modules/mono/glue/glue_header.h
+++ b/modules/mono/glue/glue_header.h
@@ -28,27 +28,44 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "builtin_types_glue.h"
+#ifdef MONO_GLUE_ENABLED
+
+#include "base_object_glue.h"
 #include "collections_glue.h"
+#include "gd_glue.h"
+#include "nodepath_glue.h"
+#include "rid_glue.h"
+#include "string_glue.h"
+
+/**
+ * Registers internal calls that were not generated. This function is called
+ * from the generated GodotSharpBindings::register_generated_icalls() function.
+ */
+void godot_register_glue_header_icalls() {
+	godot_register_collections_icalls();
+	godot_register_gd_icalls();
+	godot_register_nodepath_icalls();
+	godot_register_object_icalls();
+	godot_register_rid_icalls();
+	godot_register_string_icalls();
+}
+
+// Used by the generated glue
+
+#include "core/array.h"
+#include "core/class_db.h"
+#include "core/dictionary.h"
+#include "core/engine.h"
+#include "core/method_bind.h"
+#include "core/node_path.h"
+#include "core/object.h"
+#include "core/reference.h"
+#include "core/typedefs.h"
+#include "core/ustring.h"
 
-#include "../csharp_script.h"
 #include "../mono_gd/gd_mono_class.h"
 #include "../mono_gd/gd_mono_internals.h"
-#include "../mono_gd/gd_mono_marshal.h"
-#include "../signal_awaiter_utils.h"
-
-#include "bind/core_bind.h"
-#include "class_db.h"
-#include "engine.h"
-#include "io/marshalls.h"
-#include "object.h"
-#include "os/os.h"
-#include "reference.h"
-#include "variant_parser.h"
-
-#ifdef TOOLS_ENABLED
-#include "editor/editor_node.h"
-#endif
+#include "../mono_gd/gd_mono_utils.h"
 
 #define GODOTSHARP_INSTANCE_OBJECT(m_instance, m_type) \
 	static ClassDB::ClassInfo *ci = NULL;              \
@@ -57,257 +74,4 @@
 	}                                                  \
 	Object *m_instance = ci->creation_func();
 
-void godot_icall_Object_Dtor(MonoObject *obj, Object *ptr) {
-#ifdef DEBUG_ENABLED
-	CRASH_COND(ptr == NULL);
-#endif
-	_GodotSharp::get_singleton()->queue_dispose(obj, ptr);
-}
-
-// -- ClassDB --
-
-MethodBind *godot_icall_ClassDB_get_method(MonoString *p_type, MonoString *p_method) {
-	StringName type(GDMonoMarshal::mono_string_to_godot(p_type));
-	StringName method(GDMonoMarshal::mono_string_to_godot(p_method));
-	return ClassDB::get_method(type, method);
-}
-
-// -- SignalAwaiter --
-
-Error godot_icall_Object_connect_signal_awaiter(Object *p_source, MonoString *p_signal, Object *p_target, MonoObject *p_awaiter) {
-	String signal = GDMonoMarshal::mono_string_to_godot(p_signal);
-	return SignalAwaiterUtils::connect_signal_awaiter(p_source, signal, p_target, p_awaiter);
-}
-
-// -- NodePath --
-
-NodePath *godot_icall_NodePath_Ctor(MonoString *p_path) {
-	return memnew(NodePath(GDMonoMarshal::mono_string_to_godot(p_path)));
-}
-
-void godot_icall_NodePath_Dtor(NodePath *p_ptr) {
-	ERR_FAIL_NULL(p_ptr);
-	_GodotSharp::get_singleton()->queue_dispose(p_ptr);
-}
-
-MonoString *godot_icall_NodePath_operator_String(NodePath *p_np) {
-	return GDMonoMarshal::mono_string_from_godot(p_np->operator String());
-}
-
-// -- RID --
-
-RID *godot_icall_RID_Ctor(Object *p_from) {
-	Resource *res_from = Object::cast_to<Resource>(p_from);
-
-	if (res_from)
-		return memnew(RID(res_from->get_rid()));
-
-	return memnew(RID);
-}
-
-void godot_icall_RID_Dtor(RID *p_ptr) {
-	ERR_FAIL_NULL(p_ptr);
-	_GodotSharp::get_singleton()->queue_dispose(p_ptr);
-}
-
-// -- String --
-
-MonoArray *godot_icall_String_md5_buffer(MonoString *p_str) {
-	Vector<uint8_t> ret = GDMonoMarshal::mono_string_to_godot(p_str).md5_buffer();
-	// TODO Check possible Array/Vector<uint8_t> problem?
-	return GDMonoMarshal::Array_to_mono_array(Variant(ret));
-}
-
-MonoString *godot_icall_String_md5_text(MonoString *p_str) {
-	String ret = GDMonoMarshal::mono_string_to_godot(p_str).md5_text();
-	return GDMonoMarshal::mono_string_from_godot(ret);
-}
-
-int godot_icall_String_rfind(MonoString *p_str, MonoString *p_what, int p_from) {
-	String what = GDMonoMarshal::mono_string_to_godot(p_what);
-	return GDMonoMarshal::mono_string_to_godot(p_str).rfind(what, p_from);
-}
-
-int godot_icall_String_rfindn(MonoString *p_str, MonoString *p_what, int p_from) {
-	String what = GDMonoMarshal::mono_string_to_godot(p_what);
-	return GDMonoMarshal::mono_string_to_godot(p_str).rfindn(what, p_from);
-}
-
-MonoArray *godot_icall_String_sha256_buffer(MonoString *p_str) {
-	Vector<uint8_t> ret = GDMonoMarshal::mono_string_to_godot(p_str).sha256_buffer();
-	return GDMonoMarshal::Array_to_mono_array(Variant(ret));
-}
-
-MonoString *godot_icall_String_sha256_text(MonoString *p_str) {
-	String ret = GDMonoMarshal::mono_string_to_godot(p_str).sha256_text();
-	return GDMonoMarshal::mono_string_from_godot(ret);
-}
-
-// -- Global Scope --
-
-MonoObject *godot_icall_Godot_bytes2var(MonoArray *p_bytes) {
-	Variant ret;
-	PoolByteArray varr = GDMonoMarshal::mono_array_to_PoolByteArray(p_bytes);
-	PoolByteArray::Read r = varr.read();
-	Error err = decode_variant(ret, r.ptr(), varr.size(), NULL);
-	if (err != OK) {
-		ret = RTR("Not enough bytes for decoding bytes, or invalid format.");
-	}
-	return GDMonoMarshal::variant_to_mono_object(ret);
-}
-
-MonoObject *godot_icall_Godot_convert(MonoObject *p_what, int p_type) {
-	Variant what = GDMonoMarshal::mono_object_to_variant(p_what);
-	const Variant *args[1] = { &what };
-	Variant::CallError ce;
-	Variant ret = Variant::construct(Variant::Type(p_type), args, 1, ce);
-	ERR_FAIL_COND_V(ce.error != Variant::CallError::CALL_OK, NULL);
-	return GDMonoMarshal::variant_to_mono_object(ret);
-}
-
-int godot_icall_Godot_hash(MonoObject *p_var) {
-	return GDMonoMarshal::mono_object_to_variant(p_var).hash();
-}
-
-MonoObject *godot_icall_Godot_instance_from_id(int p_instance_id) {
-	return GDMonoUtils::unmanaged_get_managed(ObjectDB::get_instance(p_instance_id));
-}
-
-void godot_icall_Godot_print(MonoArray *p_what) {
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-	String str;
-	for (int i = 0; i < what.size(); i++)
-		str += what[i].operator String();
-	print_line(str);
-}
-
-void godot_icall_Godot_printerr(MonoArray *p_what) {
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-	String str;
-	for (int i = 0; i < what.size(); i++)
-		str += what[i].operator String();
-	OS::get_singleton()->printerr("%s\n", str.utf8().get_data());
-}
-
-void godot_icall_Godot_printraw(MonoArray *p_what) {
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-	String str;
-	for (int i = 0; i < what.size(); i++)
-		str += what[i].operator String();
-	OS::get_singleton()->print("%s", str.utf8().get_data());
-}
-
-void godot_icall_Godot_prints(MonoArray *p_what) {
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-	String str;
-	for (int i = 0; i < what.size(); i++) {
-		if (i)
-			str += " ";
-		str += what[i].operator String();
-	}
-	print_line(str);
-}
-
-void godot_icall_Godot_printt(MonoArray *p_what) {
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-	String str;
-	for (int i = 0; i < what.size(); i++) {
-		if (i)
-			str += "\t";
-		str += what[i].operator String();
-	}
-	print_line(str);
-}
-
-void godot_icall_Godot_seed(int p_seed) {
-	Math::seed(p_seed);
-}
-
-MonoString *godot_icall_Godot_str(MonoArray *p_what) {
-	String str;
-	Array what = GDMonoMarshal::mono_array_to_Array(p_what);
-
-	for (int i = 0; i < what.size(); i++) {
-		String os = what[i].operator String();
-
-		if (i == 0)
-			str = os;
-		else
-			str += os;
-	}
-
-	return GDMonoMarshal::mono_string_from_godot(str);
-}
-
-MonoObject *godot_icall_Godot_str2var(MonoString *p_str) {
-	Variant ret;
-
-	VariantParser::StreamString ss;
-	ss.s = GDMonoMarshal::mono_string_to_godot(p_str);
-
-	String errs;
-	int line;
-	Error err = VariantParser::parse(&ss, ret, errs, line);
-	if (err != OK) {
-		String err_str = "Parse error at line " + itos(line) + ": " + errs;
-		ERR_PRINTS(err_str);
-		ret = err_str;
-	}
-
-	return GDMonoMarshal::variant_to_mono_object(ret);
-}
-
-bool godot_icall_Godot_type_exists(MonoString *p_type) {
-	return ClassDB::class_exists(GDMonoMarshal::mono_string_to_godot(p_type));
-}
-
-MonoArray *godot_icall_Godot_var2bytes(MonoObject *p_var) {
-	Variant var = GDMonoMarshal::mono_object_to_variant(p_var);
-
-	PoolByteArray barr;
-	int len;
-	Error err = encode_variant(var, NULL, len);
-	ERR_EXPLAIN("Unexpected error encoding variable to bytes, likely unserializable type found (Object or RID).");
-	ERR_FAIL_COND_V(err != OK, NULL);
-
-	barr.resize(len);
-	{
-		PoolByteArray::Write w = barr.write();
-		encode_variant(var, w.ptr(), len);
-	}
-
-	return GDMonoMarshal::PoolByteArray_to_mono_array(barr);
-}
-
-MonoString *godot_icall_Godot_var2str(MonoObject *p_var) {
-	String vars;
-	VariantWriter::write_to_string(GDMonoMarshal::mono_object_to_variant(p_var), vars);
-	return GDMonoMarshal::mono_string_from_godot(vars);
-}
-
-MonoObject *godot_icall_Godot_weakref(Object *p_obj) {
-	if (!p_obj)
-		return NULL;
-
-	Ref<WeakRef> wref;
-	Reference *ref = Object::cast_to<Reference>(p_obj);
-
-	if (ref) {
-		REF r = ref;
-		if (!r.is_valid())
-			return NULL;
-
-		wref.instance();
-		wref->set_ref(r);
-	} else {
-		wref.instance();
-		wref->set_obj(p_obj);
-	}
-
-	return GDMonoUtils::create_managed_for_godot_object(CACHED_CLASS(WeakRef), Reference::get_class_static(), Object::cast_to<Object>(wref.ptr()));
-}
-
-void godot_register_header_icalls() {
-	godot_register_builtin_type_icalls();
-	godot_register_collections_icalls();
-}
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/builtin_types_glue.h b/modules/mono/glue/nodepath_glue.cpp
index ef9f152682..4b7648a4f9 100644
--- a/modules/mono/glue/builtin_types_glue.h
+++ b/modules/mono/glue/nodepath_glue.cpp
@@ -1,5 +1,5 @@
 /*************************************************************************/
-/*  builtin_types_glue.h                                                 */
+/*  nodepath_glue.cpp                                                    */
 /*************************************************************************/
 /*                       This file is part of:                           */
 /*                           GODOT ENGINE                                */
@@ -28,15 +28,24 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef BUILTIN_TYPES_GLUE_H
-#define BUILTIN_TYPES_GLUE_H
+#include "nodepath_glue.h"
 
-#include "core/node_path.h"
-#include "core/rid.h"
+#ifdef MONO_GLUE_ENABLED
 
-#include <mono/metadata/object.h>
+#include "core/ustring.h"
 
-#include "../mono_gd/gd_mono_marshal.h"
+NodePath *godot_icall_NodePath_Ctor(MonoString *p_path) {
+	return memnew(NodePath(GDMonoMarshal::mono_string_to_godot(p_path)));
+}
+
+void godot_icall_NodePath_Dtor(NodePath *p_ptr) {
+	ERR_FAIL_NULL(p_ptr);
+	_GodotSharp::get_singleton()->queue_dispose(p_ptr);
+}
+
+MonoString *godot_icall_NodePath_operator_String(NodePath *p_np) {
+	return GDMonoMarshal::mono_string_from_godot(p_np->operator String());
+}
 
 MonoBoolean godot_icall_NodePath_is_absolute(NodePath *p_ptr) {
 	return (MonoBoolean)p_ptr->is_absolute();
@@ -70,20 +79,18 @@ MonoBoolean godot_icall_NodePath_is_empty(NodePath *p_ptr) {
 	return (MonoBoolean)p_ptr->is_empty();
 }
 
-uint32_t godot_icall_RID_get_id(RID *p_ptr) {
-	return p_ptr->get_id();
-}
-
-void godot_register_builtin_type_icalls() {
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_as_property_path", (void *)godot_icall_NodePath_get_as_property_path);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_concatenated_subnames", (void *)godot_icall_NodePath_get_concatenated_subnames);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_name", (void *)godot_icall_NodePath_get_name);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_name_count", (void *)godot_icall_NodePath_get_name_count);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_subname", (void *)godot_icall_NodePath_get_subname);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_get_subname_count", (void *)godot_icall_NodePath_get_subname_count);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_is_absolute", (void *)godot_icall_NodePath_is_absolute);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_NodePath_is_empty", (void *)godot_icall_NodePath_is_empty);
-	mono_add_internal_call("Godot.NativeCalls::godot_icall_RID_get_id", (void *)godot_icall_RID_get_id);
+void godot_register_nodepath_icalls() {
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_Ctor", (void *)godot_icall_NodePath_Ctor);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_Dtor", (void *)godot_icall_NodePath_Dtor);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_operator_String", (void *)godot_icall_NodePath_operator_String);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_as_property_path", (void *)godot_icall_NodePath_get_as_property_path);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_concatenated_subnames", (void *)godot_icall_NodePath_get_concatenated_subnames);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_name", (void *)godot_icall_NodePath_get_name);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_name_count", (void *)godot_icall_NodePath_get_name_count);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_subname", (void *)godot_icall_NodePath_get_subname);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_get_subname_count", (void *)godot_icall_NodePath_get_subname_count);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_is_absolute", (void *)godot_icall_NodePath_is_absolute);
+	mono_add_internal_call("Godot.NodePath::godot_icall_NodePath_is_empty", (void *)godot_icall_NodePath_is_empty);
 }
 
-#endif // BUILTIN_TYPES_GLUE_H
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/nodepath_glue.h b/modules/mono/glue/nodepath_glue.h
new file mode 100644
index 0000000000..92579399a6
--- /dev/null
+++ b/modules/mono/glue/nodepath_glue.h
@@ -0,0 +1,68 @@
+/*************************************************************************/
+/*  nodepath_glue.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef NODEPATH_GLUE_H
+#define NODEPATH_GLUE_H
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/node_path.h"
+
+#include "../mono_gd/gd_mono_marshal.h"
+
+NodePath *godot_icall_NodePath_Ctor(MonoString *p_path);
+
+void godot_icall_NodePath_Dtor(NodePath *p_ptr);
+
+MonoString *godot_icall_NodePath_operator_String(NodePath *p_np);
+
+MonoBoolean godot_icall_NodePath_is_absolute(NodePath *p_ptr);
+
+uint32_t godot_icall_NodePath_get_name_count(NodePath *p_ptr);
+
+MonoString *godot_icall_NodePath_get_name(NodePath *p_ptr, uint32_t p_idx);
+
+uint32_t godot_icall_NodePath_get_subname_count(NodePath *p_ptr);
+
+MonoString *godot_icall_NodePath_get_subname(NodePath *p_ptr, uint32_t p_idx);
+
+MonoString *godot_icall_NodePath_get_concatenated_subnames(NodePath *p_ptr);
+
+NodePath *godot_icall_NodePath_get_as_property_path(NodePath *p_ptr);
+
+MonoBoolean godot_icall_NodePath_is_empty(NodePath *p_ptr);
+
+// Register internal calls
+
+void godot_register_nodepath_icalls();
+
+#endif // MONO_GLUE_ENABLED
+
+#endif // NODEPATH_GLUE_H
diff --git a/modules/mono/glue/rid_glue.cpp b/modules/mono/glue/rid_glue.cpp
new file mode 100644
index 0000000000..5d66b8aa6f
--- /dev/null
+++ b/modules/mono/glue/rid_glue.cpp
@@ -0,0 +1,61 @@
+/*************************************************************************/
+/*  rid_glue.cpp                                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "rid_glue.h"
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/resource.h"
+
+RID *godot_icall_RID_Ctor(Object *p_from) {
+	Resource *res_from = Object::cast_to<Resource>(p_from);
+
+	if (res_from)
+		return memnew(RID(res_from->get_rid()));
+
+	return memnew(RID);
+}
+
+void godot_icall_RID_Dtor(RID *p_ptr) {
+	ERR_FAIL_NULL(p_ptr);
+	_GodotSharp::get_singleton()->queue_dispose(p_ptr);
+}
+
+uint32_t godot_icall_RID_get_id(RID *p_ptr) {
+	return p_ptr->get_id();
+}
+
+void godot_register_rid_icalls() {
+	mono_add_internal_call("Godot.RID::godot_icall_RID_Ctor", (void *)godot_icall_RID_Ctor);
+	mono_add_internal_call("Godot.RID::godot_icall_RID_Dtor", (void *)godot_icall_RID_Dtor);
+	mono_add_internal_call("Godot.RID::godot_icall_RID_get_id", (void *)godot_icall_RID_get_id);
+}
+
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/rid_glue.h b/modules/mono/glue/rid_glue.h
new file mode 100644
index 0000000000..c725a9b5de
--- /dev/null
+++ b/modules/mono/glue/rid_glue.h
@@ -0,0 +1,53 @@
+/*************************************************************************/
+/*  rid_glue.h                                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef RID_GLUE_H
+#define RID_GLUE_H
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/object.h"
+#include "core/rid.h"
+
+#include "../mono_gd/gd_mono_marshal.h"
+
+RID *godot_icall_RID_Ctor(Object *p_from);
+
+void godot_icall_RID_Dtor(RID *p_ptr);
+
+uint32_t godot_icall_RID_get_id(RID *p_ptr);
+
+// Register internal calls
+
+void godot_register_rid_icalls();
+
+#endif // MONO_GLUE_ENABLED
+
+#endif // RID_GLUE_H
diff --git a/modules/mono/glue/string_glue.cpp b/modules/mono/glue/string_glue.cpp
new file mode 100644
index 0000000000..e1a2f1affd
--- /dev/null
+++ b/modules/mono/glue/string_glue.cpp
@@ -0,0 +1,79 @@
+/*************************************************************************/
+/*  string_glue.cpp                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "string_glue.h"
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/ustring.h"
+#include "core/variant.h"
+#include "core/vector.h"
+
+MonoArray *godot_icall_String_md5_buffer(MonoString *p_str) {
+	Vector<uint8_t> ret = GDMonoMarshal::mono_string_to_godot(p_str).md5_buffer();
+	// TODO Check possible Array/Vector<uint8_t> problem?
+	return GDMonoMarshal::Array_to_mono_array(Variant(ret));
+}
+
+MonoString *godot_icall_String_md5_text(MonoString *p_str) {
+	String ret = GDMonoMarshal::mono_string_to_godot(p_str).md5_text();
+	return GDMonoMarshal::mono_string_from_godot(ret);
+}
+
+int godot_icall_String_rfind(MonoString *p_str, MonoString *p_what, int p_from) {
+	String what = GDMonoMarshal::mono_string_to_godot(p_what);
+	return GDMonoMarshal::mono_string_to_godot(p_str).rfind(what, p_from);
+}
+
+int godot_icall_String_rfindn(MonoString *p_str, MonoString *p_what, int p_from) {
+	String what = GDMonoMarshal::mono_string_to_godot(p_what);
+	return GDMonoMarshal::mono_string_to_godot(p_str).rfindn(what, p_from);
+}
+
+MonoArray *godot_icall_String_sha256_buffer(MonoString *p_str) {
+	Vector<uint8_t> ret = GDMonoMarshal::mono_string_to_godot(p_str).sha256_buffer();
+	return GDMonoMarshal::Array_to_mono_array(Variant(ret));
+}
+
+MonoString *godot_icall_String_sha256_text(MonoString *p_str) {
+	String ret = GDMonoMarshal::mono_string_to_godot(p_str).sha256_text();
+	return GDMonoMarshal::mono_string_from_godot(ret);
+}
+
+void godot_register_string_icalls() {
+	mono_add_internal_call("Godot.String::godot_icall_String_md5_buffer", (void *)godot_icall_String_md5_buffer);
+	mono_add_internal_call("Godot.String::godot_icall_String_md5_text", (void *)godot_icall_String_md5_text);
+	mono_add_internal_call("Godot.String::godot_icall_String_rfind", (void *)godot_icall_String_rfind);
+	mono_add_internal_call("Godot.String::godot_icall_String_rfindn", (void *)godot_icall_String_rfindn);
+	mono_add_internal_call("Godot.String::godot_icall_String_sha256_buffer", (void *)godot_icall_String_sha256_buffer);
+	mono_add_internal_call("Godot.String::godot_icall_String_sha256_text", (void *)godot_icall_String_sha256_text);
+}
+
+#endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/string_glue.h b/modules/mono/glue/string_glue.h
new file mode 100644
index 0000000000..8b1553e28b
--- /dev/null
+++ b/modules/mono/glue/string_glue.h
@@ -0,0 +1,56 @@
+/*************************************************************************/
+/*  string_glue.h                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef STRING_GLUE_H
+#define STRING_GLUE_H
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "../mono_gd/gd_mono_marshal.h"
+
+MonoArray *godot_icall_String_md5_buffer(MonoString *p_str);
+
+MonoString *godot_icall_String_md5_text(MonoString *p_str);
+
+int godot_icall_String_rfind(MonoString *p_str, MonoString *p_what, int p_from);
+
+int godot_icall_String_rfindn(MonoString *p_str, MonoString *p_what, int p_from);
+
+MonoArray *godot_icall_String_sha256_buffer(MonoString *p_str);
+
+MonoString *godot_icall_String_sha256_text(MonoString *p_str);
+
+// Register internal calls
+
+void godot_register_string_icalls();
+
+#endif // MONO_GLUE_ENABLED
+
+#endif // STRING_GLUE_H
diff --git a/modules/mono/mono_gc_handle.cpp b/modules/mono/mono_gc_handle.cpp
index 9f0e933a8c..f695bddfeb 100644
--- a/modules/mono/mono_gc_handle.cpp
+++ b/modules/mono/mono_gc_handle.cpp
@@ -32,24 +32,34 @@
 
 #include "mono_gd/gd_mono.h"
 
-uint32_t MonoGCHandle::make_strong_handle(MonoObject *p_object) {
+uint32_t MonoGCHandle::new_strong_handle(MonoObject *p_object) {
 
 	return mono_gchandle_new(p_object, /* pinned: */ false);
 }
 
-uint32_t MonoGCHandle::make_weak_handle(MonoObject *p_object) {
+uint32_t MonoGCHandle::new_strong_handle_pinned(MonoObject *p_object) {
+
+	return mono_gchandle_new(p_object, /* pinned: */ true);
+}
+
+uint32_t MonoGCHandle::new_weak_handle(MonoObject *p_object) {
 
 	return mono_gchandle_new_weakref(p_object, /* track_resurrection: */ false);
 }
 
+void MonoGCHandle::free_handle(uint32_t p_gchandle) {
+
+	mono_gchandle_free(p_gchandle);
+}
+
 Ref<MonoGCHandle> MonoGCHandle::create_strong(MonoObject *p_object) {
 
-	return memnew(MonoGCHandle(make_strong_handle(p_object), STRONG_HANDLE));
+	return memnew(MonoGCHandle(new_strong_handle(p_object), STRONG_HANDLE));
 }
 
 Ref<MonoGCHandle> MonoGCHandle::create_weak(MonoObject *p_object) {
 
-	return memnew(MonoGCHandle(make_weak_handle(p_object), WEAK_HANDLE));
+	return memnew(MonoGCHandle(new_weak_handle(p_object), WEAK_HANDLE));
 }
 
 void MonoGCHandle::release() {
@@ -59,7 +69,7 @@ void MonoGCHandle::release() {
 #endif
 
 	if (!released && GDMono::get_singleton()->is_runtime_initialized()) {
-		mono_gchandle_free(handle);
+		free_handle(handle);
 		released = true;
 	}
 }
diff --git a/modules/mono/mono_gc_handle.h b/modules/mono/mono_gc_handle.h
index 7eeaba30e0..e145c1e1e6 100644
--- a/modules/mono/mono_gc_handle.h
+++ b/modules/mono/mono_gc_handle.h
@@ -49,12 +49,15 @@ public:
 		WEAK_HANDLE
 	};
 
-	static uint32_t make_strong_handle(MonoObject *p_object);
-	static uint32_t make_weak_handle(MonoObject *p_object);
+	static uint32_t new_strong_handle(MonoObject *p_object);
+	static uint32_t new_strong_handle_pinned(MonoObject *p_object);
+	static uint32_t new_weak_handle(MonoObject *p_object);
+	static void free_handle(uint32_t p_gchandle);
 
 	static Ref<MonoGCHandle> create_strong(MonoObject *p_object);
 	static Ref<MonoGCHandle> create_weak(MonoObject *p_object);
 
+	_FORCE_INLINE_ bool is_released() { return released; }
 	_FORCE_INLINE_ bool is_weak() { return weak; }
 
 	_FORCE_INLINE_ MonoObject *get_target() const { return released ? NULL : mono_gchandle_get_target(handle); }
diff --git a/modules/mono/mono_gd/gd_mono.cpp b/modules/mono/mono_gd/gd_mono.cpp
index fadac941e9..96d3f34039 100644
--- a/modules/mono/mono_gd/gd_mono.cpp
+++ b/modules/mono/mono_gd/gd_mono.cpp
@@ -42,6 +42,7 @@
 #include "project_settings.h"
 
 #include "../csharp_script.h"
+#include "../glue/cs_glue_version.gen.h"
 #include "../godotsharp_dirs.h"
 #include "../utils/path_utils.h"
 #include "gd_mono_class.h"
@@ -177,6 +178,30 @@ void GDMono::initialize() {
 
 	mono_set_dirs(assembly_dir.length() ? assembly_dir.get_data() : NULL,
 			config_dir.length() ? config_dir.get_data() : NULL);
+#elif OSX_ENABLED
+	mono_set_dirs(NULL, NULL);
+
+	{
+		const char *assembly_rootdir = mono_assembly_getrootdir();
+		const char *config_dir = mono_get_config_dir();
+
+		if (!assembly_rootdir || !config_dir || !DirAccess::exists(assembly_rootdir) || !DirAccess::exists(config_dir)) {
+			Vector<const char *> locations;
+			locations.push_back("/Library/Frameworks/Mono.framework/Versions/Current/");
+			locations.push_back("/usr/local/var/homebrew/linked/mono/");
+
+			for (int i = 0; i < locations.size(); i++) {
+				String hint_assembly_rootdir = path_join(locations[i], "lib");
+				String hint_mscorlib_path = path_join(hint_assembly_rootdir, "mono", "4.5", "mscorlib.dll");
+				String hint_config_dir = path_join(locations[i], "etc");
+
+				if (FileAccess::exists(hint_mscorlib_path) && DirAccess::exists(hint_config_dir)) {
+					mono_set_dirs(hint_assembly_rootdir.utf8().get_data(), hint_config_dir.utf8().get_data());
+					break;
+				}
+			}
+		}
+	}
 #else
 	mono_set_dirs(NULL, NULL);
 #endif
@@ -232,7 +257,7 @@ void GDMono::initialize() {
 	_register_internal_calls();
 
 	// The following assemblies are not required at initialization
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 	if (_load_api_assemblies()) {
 		if (!core_api_assembly_out_of_sync && !editor_api_assembly_out_of_sync && GDMonoUtils::mono_cache.godot_api_cache_updated) {
 			// Everything is fine with the api assemblies, load the project assembly
@@ -275,7 +300,7 @@ void GDMono::initialize() {
 	print_verbose("Mono: INITIALIZED");
 }
 
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 namespace GodotSharpBindings {
 
 uint64_t get_core_api_hash();
@@ -283,14 +308,13 @@ uint64_t get_core_api_hash();
 uint64_t get_editor_api_hash();
 #endif // TOOLS_ENABLED
 uint32_t get_bindings_version();
-uint32_t get_cs_glue_version();
 
 void register_generated_icalls();
 } // namespace GodotSharpBindings
 #endif
 
 void GDMono::_register_internal_calls() {
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 	GodotSharpBindings::register_generated_icalls();
 #endif
 
@@ -304,7 +328,7 @@ void GDMono::_initialize_and_check_api_hashes() {
 
 	api_core_hash = ClassDB::get_api_hash(ClassDB::API_CORE);
 
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 	if (api_core_hash != GodotSharpBindings::get_core_api_hash()) {
 		ERR_PRINT("Mono: Core API hash mismatch!");
 	}
@@ -313,7 +337,7 @@ void GDMono::_initialize_and_check_api_hashes() {
 #ifdef TOOLS_ENABLED
 	api_editor_hash = ClassDB::get_api_hash(ClassDB::API_EDITOR);
 
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 	if (api_editor_hash != GodotSharpBindings::get_editor_api_hash()) {
 		ERR_PRINT("Mono: Editor API hash mismatch!");
 	}
@@ -431,11 +455,11 @@ bool GDMono::_load_core_api_assembly() {
 	bool success = load_assembly(API_ASSEMBLY_NAME, &core_api_assembly);
 
 	if (success) {
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 		APIAssembly::Version api_assembly_ver = APIAssembly::Version::get_from_loaded_assembly(core_api_assembly, APIAssembly::API_CORE);
 		core_api_assembly_out_of_sync = GodotSharpBindings::get_core_api_hash() != api_assembly_ver.godot_api_hash ||
 										GodotSharpBindings::get_bindings_version() != api_assembly_ver.bindings_version ||
-										GodotSharpBindings::get_cs_glue_version() != api_assembly_ver.cs_glue_version;
+										CS_GLUE_VERSION != api_assembly_ver.cs_glue_version;
 #endif
 		GDMonoUtils::update_godot_api_cache();
 	}
@@ -457,11 +481,11 @@ bool GDMono::_load_editor_api_assembly() {
 	bool success = load_assembly(EDITOR_API_ASSEMBLY_NAME, &editor_api_assembly);
 
 	if (success) {
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 		APIAssembly::Version api_assembly_ver = APIAssembly::Version::get_from_loaded_assembly(editor_api_assembly, APIAssembly::API_EDITOR);
 		editor_api_assembly_out_of_sync = GodotSharpBindings::get_editor_api_hash() != api_assembly_ver.godot_api_hash ||
 										  GodotSharpBindings::get_bindings_version() != api_assembly_ver.bindings_version ||
-										  GodotSharpBindings::get_cs_glue_version() != api_assembly_ver.cs_glue_version;
+										  CS_GLUE_VERSION != api_assembly_ver.cs_glue_version;
 #endif
 	}
 
@@ -615,9 +639,7 @@ Error GDMono::_unload_scripts_domain() {
 
 	mono_gc_collect(mono_gc_max_generation());
 
-	finalizing_scripts_domain = true;
 	mono_domain_finalize(scripts_domain, 2000);
-	finalizing_scripts_domain = false;
 
 	mono_gc_collect(mono_gc_max_generation());
 
@@ -684,7 +706,7 @@ Error GDMono::reload_scripts_domain() {
 		return err;
 	}
 
-#ifndef MONO_GLUE_DISABLED
+#ifdef MONO_GLUE_ENABLED
 	if (!_load_api_assemblies()) {
 		return ERR_CANT_OPEN;
 	}
@@ -698,13 +720,15 @@ Error GDMono::reload_scripts_domain() {
 		// so we invalidate the version in the metadata and unload the script domain.
 
 		if (core_api_assembly_out_of_sync) {
+			ERR_PRINT("The loaded Core API assembly is out of sync");
 			metadata_set_api_assembly_invalidated(APIAssembly::API_CORE, true);
 		} else if (!GDMonoUtils::mono_cache.godot_api_cache_updated) {
-			ERR_PRINT("Core API assembly is in sync, but the cache update failed");
+			ERR_PRINT("The loaded Core API assembly is in sync, but the cache update failed");
 			metadata_set_api_assembly_invalidated(APIAssembly::API_CORE, true);
 		}
 
 		if (editor_api_assembly_out_of_sync) {
+			ERR_PRINT("The loaded Editor API assembly is out of sync");
 			metadata_set_api_assembly_invalidated(APIAssembly::API_EDITOR, true);
 		}
 
@@ -813,7 +837,6 @@ GDMono::GDMono() {
 	gdmono_log = memnew(GDMonoLog);
 
 	runtime_initialized = false;
-	finalizing_scripts_domain = false;
 
 	root_domain = NULL;
 	scripts_domain = NULL;
@@ -842,7 +865,7 @@ GDMono::GDMono() {
 
 GDMono::~GDMono() {
 
-	if (runtime_initialized) {
+	if (is_runtime_initialized()) {
 
 		if (scripts_domain) {
 
@@ -867,8 +890,9 @@ GDMono::~GDMono() {
 
 		print_verbose("Mono: Runtime cleanup...");
 
-		runtime_initialized = false;
 		mono_jit_cleanup(root_domain);
+
+		runtime_initialized = false;
 	}
 
 	if (gdmono_log)
@@ -879,33 +903,12 @@ GDMono::~GDMono() {
 
 _GodotSharp *_GodotSharp::singleton = NULL;
 
-void _GodotSharp::_dispose_object(Object *p_object) {
-
-	if (p_object->get_script_instance()) {
-		CSharpInstance *cs_instance = CAST_CSHARP_INSTANCE(p_object->get_script_instance());
-		if (cs_instance) {
-			cs_instance->mono_object_disposed();
-			return;
-		}
-	}
-
-	// Unsafe refcount decrement. The managed instance also counts as a reference.
-	// See: CSharpLanguage::alloc_instance_binding_data(Object *p_object)
-	if (Object::cast_to<Reference>(p_object)->unreference()) {
-		memdelete(p_object);
-	}
-}
-
 void _GodotSharp::_dispose_callback() {
 
 #ifndef NO_THREADS
 	queue_mutex->lock();
 #endif
 
-	for (List<Object *>::Element *E = obj_delete_queue.front(); E; E = E->next()) {
-		_dispose_object(E->get());
-	}
-
 	for (List<NodePath *>::Element *E = np_delete_queue.front(); E; E = E->next()) {
 		memdelete(E->get());
 	}
@@ -914,7 +917,6 @@ void _GodotSharp::_dispose_callback() {
 		memdelete(E->get());
 	}
 
-	obj_delete_queue.clear();
 	np_delete_queue.clear();
 	rid_delete_queue.clear();
 	queue_empty = true;
@@ -934,52 +936,69 @@ void _GodotSharp::detach_thread() {
 	GDMonoUtils::detach_current_thread();
 }
 
-bool _GodotSharp::is_finalizing_domain() {
+int32_t _GodotSharp::get_domain_id() {
 
-	return GDMono::get_singleton()->is_finalizing_scripts_domain();
+	MonoDomain *domain = mono_domain_get();
+	CRASH_COND(!domain); // User must check if runtime is initialized before calling this method
+	return mono_domain_get_id(domain);
 }
 
-bool _GodotSharp::is_domain_loaded() {
+int32_t _GodotSharp::get_scripts_domain_id() {
 
-	return GDMono::get_singleton()->get_scripts_domain() != NULL;
+	MonoDomain *domain = SCRIPTS_DOMAIN;
+	CRASH_COND(!domain); // User must check if scripts domain is loaded before calling this method
+	return mono_domain_get_id(domain);
 }
 
-#define ENQUEUE_FOR_DISPOSAL(m_queue, m_inst)                                   \
-	m_queue.push_back(m_inst);                                                  \
-	if (queue_empty) {                                                          \
-		queue_empty = false;                                                    \
-		if (!is_finalizing_domain()) { /* call_deferred may not be safe here */ \
-			call_deferred("_dispose_callback");                                 \
-		}                                                                       \
-	}
+bool _GodotSharp::is_scripts_domain_loaded() {
 
-void _GodotSharp::queue_dispose(MonoObject *p_mono_object, Object *p_object) {
+	return GDMono::get_singleton()->is_runtime_initialized() && SCRIPTS_DOMAIN != NULL;
+}
 
-	if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
-		_dispose_object(p_object);
-	} else {
-#ifndef NO_THREADS
-		queue_mutex->lock();
-#endif
+bool _GodotSharp::_is_domain_finalizing_for_unload(int32_t p_domain_id) {
 
-		// This is our last chance to invoke notification predelete (this is being called from the finalizer)
-		// We must use the MonoObject* passed by the finalizer, because the weak GC handle target returns NULL at this point
-		CSharpInstance *si = CAST_CSHARP_INSTANCE(p_object->get_script_instance());
-		if (si) {
-			si->call_notification_no_check(p_mono_object, Object::NOTIFICATION_PREDELETE);
-		}
+	return is_domain_finalizing_for_unload(p_domain_id);
+}
 
-		ENQUEUE_FOR_DISPOSAL(obj_delete_queue, p_object);
+bool _GodotSharp::is_domain_finalizing_for_unload() {
 
-#ifndef NO_THREADS
-		queue_mutex->unlock();
-#endif
-	}
+	return is_domain_finalizing_for_unload(mono_domain_get());
+}
+
+bool _GodotSharp::is_domain_finalizing_for_unload(int32_t p_domain_id) {
+
+	return is_domain_finalizing_for_unload(mono_domain_get_by_id(p_domain_id));
+}
+
+bool _GodotSharp::is_domain_finalizing_for_unload(MonoDomain *p_domain) {
+
+	if (!p_domain)
+		return true;
+	return mono_domain_is_unloading(p_domain);
+}
+
+bool _GodotSharp::is_runtime_shutting_down() {
+
+	return mono_runtime_is_shutting_down();
 }
 
+bool _GodotSharp::is_runtime_initialized() {
+
+	return GDMono::get_singleton()->is_runtime_initialized();
+}
+
+#define ENQUEUE_FOR_DISPOSAL(m_queue, m_inst)                                                            \
+	m_queue.push_back(m_inst);                                                                           \
+	if (queue_empty) {                                                                                   \
+		queue_empty = false;                                                                             \
+		if (!is_domain_finalizing_for_unload(SCRIPTS_DOMAIN)) { /* call_deferred may not be safe here */ \
+			call_deferred("_dispose_callback");                                                          \
+		}                                                                                                \
+	}
+
 void _GodotSharp::queue_dispose(NodePath *p_node_path) {
 
-	if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
+	if (GDMonoUtils::is_main_thread() && !is_domain_finalizing_for_unload(SCRIPTS_DOMAIN)) {
 		memdelete(p_node_path);
 	} else {
 #ifndef NO_THREADS
@@ -996,7 +1015,7 @@ void _GodotSharp::queue_dispose(NodePath *p_node_path) {
 
 void _GodotSharp::queue_dispose(RID *p_rid) {
 
-	if (GDMonoUtils::is_main_thread() && !GDMono::get_singleton()->is_finalizing_scripts_domain()) {
+	if (GDMonoUtils::is_main_thread() && !is_domain_finalizing_for_unload(SCRIPTS_DOMAIN)) {
 		memdelete(p_rid);
 	} else {
 #ifndef NO_THREADS
@@ -1016,8 +1035,13 @@ void _GodotSharp::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("attach_thread"), &_GodotSharp::attach_thread);
 	ClassDB::bind_method(D_METHOD("detach_thread"), &_GodotSharp::detach_thread);
 
-	ClassDB::bind_method(D_METHOD("is_finalizing_domain"), &_GodotSharp::is_finalizing_domain);
-	ClassDB::bind_method(D_METHOD("is_domain_loaded"), &_GodotSharp::is_domain_loaded);
+	ClassDB::bind_method(D_METHOD("get_domain_id"), &_GodotSharp::get_domain_id);
+	ClassDB::bind_method(D_METHOD("get_scripts_domain_id"), &_GodotSharp::get_scripts_domain_id);
+	ClassDB::bind_method(D_METHOD("is_scripts_domain_loaded"), &_GodotSharp::is_scripts_domain_loaded);
+	ClassDB::bind_method(D_METHOD("is_domain_finalizing_for_unload", "domain_id"), &_GodotSharp::_is_domain_finalizing_for_unload);
+
+	ClassDB::bind_method(D_METHOD("is_runtime_shutting_down"), &_GodotSharp::is_runtime_shutting_down);
+	ClassDB::bind_method(D_METHOD("is_runtime_initialized"), &_GodotSharp::is_runtime_initialized);
 
 	ClassDB::bind_method(D_METHOD("_dispose_callback"), &_GodotSharp::_dispose_callback);
 }
diff --git a/modules/mono/mono_gd/gd_mono.h b/modules/mono/mono_gd/gd_mono.h
index e0ec6ced5e..0c5503d28e 100644
--- a/modules/mono/mono_gd/gd_mono.h
+++ b/modules/mono/mono_gd/gd_mono.h
@@ -170,8 +170,7 @@ public:
 	void add_assembly(uint32_t p_domain_id, GDMonoAssembly *p_assembly);
 	GDMonoAssembly **get_loaded_assembly(const String &p_name);
 
-	_FORCE_INLINE_ bool is_runtime_initialized() const { return runtime_initialized; }
-	_FORCE_INLINE_ bool is_finalizing_scripts_domain() const { return finalizing_scripts_domain; }
+	_FORCE_INLINE_ bool is_runtime_initialized() const { return runtime_initialized && !mono_runtime_is_shutting_down() /* stays true after shutdown finished */; }
 
 	_FORCE_INLINE_ MonoDomain *get_scripts_domain() { return scripts_domain; }
 #ifdef TOOLS_ENABLED
@@ -236,11 +235,10 @@ class _GodotSharp : public Object {
 
 	friend class GDMono;
 
-	void _dispose_object(Object *p_object);
-
 	void _dispose_callback();
 
-	List<Object *> obj_delete_queue;
+	bool _is_domain_finalizing_for_unload(int32_t p_domain_id);
+
 	List<NodePath *> np_delete_queue;
 	List<RID *> rid_delete_queue;
 
@@ -260,10 +258,18 @@ public:
 	void attach_thread();
 	void detach_thread();
 
-	bool is_finalizing_domain();
-	bool is_domain_loaded();
+	int32_t get_domain_id();
+	int32_t get_scripts_domain_id();
+
+	bool is_scripts_domain_loaded();
+
+	bool is_domain_finalizing_for_unload();
+	bool is_domain_finalizing_for_unload(int32_t p_domain_id);
+	bool is_domain_finalizing_for_unload(MonoDomain *p_domain);
+
+	bool is_runtime_shutting_down();
+	bool is_runtime_initialized();
 
-	void queue_dispose(MonoObject *p_mono_object, Object *p_object);
 	void queue_dispose(NodePath *p_node_path);
 	void queue_dispose(RID *p_rid);
 
diff --git a/modules/mono/mono_gd/gd_mono_utils.cpp b/modules/mono/mono_gd/gd_mono_utils.cpp
index c1f56bc3d2..5e02ebf430 100644
--- a/modules/mono/mono_gd/gd_mono_utils.cpp
+++ b/modules/mono/mono_gd/gd_mono_utils.cpp
@@ -138,6 +138,7 @@ void MonoCache::clear_members() {
 	field_Image_ptr = NULL;
 	field_RID_ptr = NULL;
 
+	methodthunk_GodotObject_Dispose = NULL;
 	methodthunk_Array_GetPtr = NULL;
 	methodthunk_Dictionary_GetPtr = NULL;
 	methodthunk_MarshalUtils_IsArrayGenericType = NULL;
@@ -235,6 +236,7 @@ void update_godot_api_cache() {
 	CACHE_FIELD_AND_CHECK(NodePath, ptr, CACHED_CLASS(NodePath)->get_field(BINDINGS_PTR_FIELD));
 	CACHE_FIELD_AND_CHECK(RID, ptr, CACHED_CLASS(RID)->get_field(BINDINGS_PTR_FIELD));
 
+	CACHE_METHOD_THUNK_AND_CHECK(GodotObject, Dispose, (GodotObject_Dispose)CACHED_CLASS(GodotObject)->get_method_thunk("Dispose", 0));
 	CACHE_METHOD_THUNK_AND_CHECK(Array, GetPtr, (Array_GetPtr)GODOT_API_NS_CLAS(BINDINGS_NAMESPACE_COLLECTIONS, Array)->get_method_thunk("GetPtr", 0));
 	CACHE_METHOD_THUNK_AND_CHECK(Dictionary, GetPtr, (Dictionary_GetPtr)GODOT_API_NS_CLAS(BINDINGS_NAMESPACE_COLLECTIONS, Dictionary)->get_method_thunk("GetPtr", 0));
 	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, IsArrayGenericType, (IsArrayGenericType)GODOT_API_CLASS(MarshalUtils)->get_method_thunk("IsArrayGenericType", 1));
@@ -247,7 +249,7 @@ void update_godot_api_cache() {
 	CACHE_METHOD_THUNK_AND_CHECK(DebuggingUtils, GetStackFrameInfo, (DebugUtils_StackFrameInfo)GODOT_API_CLASS(DebuggingUtils)->get_method_thunk("GetStackFrameInfo", 4));
 #endif
 
-	// TODO Move to CSharpLanguage::init()
+	// TODO Move to CSharpLanguage::init() and do handle disposal
 	MonoObject *task_scheduler = mono_object_new(SCRIPTS_DOMAIN, GODOT_API_CLASS(GodotTaskScheduler)->get_mono_ptr());
 	GDMonoUtils::runtime_object_init(task_scheduler);
 	mono_cache.task_scheduler_handle = MonoGCHandle::create_strong(task_scheduler);
@@ -270,11 +272,48 @@ MonoObject *unmanaged_get_managed(Object *unmanaged) {
 			}
 		}
 
-		// Only called if the owner does not have a CSharpInstance
+		// If the owner does not have a CSharpInstance...
+
 		void *data = unmanaged->get_script_instance_binding(CSharpLanguage::get_singleton()->get_language_index());
 
 		if (data) {
-			return ((Map<Object *, Ref<MonoGCHandle> >::Element *)data)->value()->get_target();
+			CSharpScriptBinding &script_binding = ((Map<Object *, CSharpScriptBinding>::Element *)data)->value();
+
+			Ref<MonoGCHandle> &gchandle = script_binding.gchandle;
+			ERR_FAIL_COND_V(gchandle.is_null(), NULL);
+
+			MonoObject *target = gchandle->get_target();
+
+			if (target)
+				return target;
+
+			CSharpLanguage::get_singleton()->release_script_gchandle(gchandle);
+
+			// Create a new one
+
+#ifdef DEBUG_ENABLED
+			CRASH_COND(script_binding.type_name == StringName());
+			CRASH_COND(script_binding.wrapper_class == NULL);
+#endif
+
+			MonoObject *mono_object = GDMonoUtils::create_managed_for_godot_object(script_binding.wrapper_class, script_binding.type_name, unmanaged);
+			ERR_FAIL_NULL_V(mono_object, NULL);
+
+			gchandle->set_handle(MonoGCHandle::new_strong_handle(mono_object), MonoGCHandle::STRONG_HANDLE);
+
+			// Tie managed to unmanaged
+			Reference *ref = Object::cast_to<Reference>(unmanaged);
+
+			if (ref) {
+				// Unsafe refcount increment. The managed instance also counts as a reference.
+				// This way if the unmanaged world has no references to our owner
+				// but the managed instance is alive, the refcount will be 1 instead of 0.
+				// See: godot_icall_Reference_Dtor(MonoObject *p_obj, Object *p_ptr)
+
+				ref->reference();
+			}
+
+			return mono_object;
 		}
 	}
 
@@ -304,6 +343,7 @@ MonoThread *get_current_thread() {
 
 void runtime_object_init(MonoObject *p_this_obj) {
 	GD_MONO_BEGIN_RUNTIME_INVOKE;
+	// FIXME: Do not use mono_runtime_object_init, it aborts if an exception is thrown
 	mono_runtime_object_init(p_this_obj);
 	GD_MONO_END_RUNTIME_INVOKE;
 }
diff --git a/modules/mono/mono_gd/gd_mono_utils.h b/modules/mono/mono_gd/gd_mono_utils.h
index bf8860c85a..c6de824d5a 100644
--- a/modules/mono/mono_gd/gd_mono_utils.h
+++ b/modules/mono/mono_gd/gd_mono_utils.h
@@ -49,6 +49,7 @@
 
 namespace GDMonoUtils {
 
+typedef void (*GodotObject_Dispose)(MonoObject *, MonoObject **);
 typedef Array *(*Array_GetPtr)(MonoObject *, MonoObject **);
 typedef Dictionary *(*Dictionary_GetPtr)(MonoObject *, MonoObject **);
 typedef MonoObject *(*SignalAwaiter_SignalCallback)(MonoObject *, MonoArray *, MonoObject **);
@@ -141,6 +142,7 @@ struct MonoCache {
 	GDMonoField *field_Image_ptr;
 	GDMonoField *field_RID_ptr;
 
+	GodotObject_Dispose methodthunk_GodotObject_Dispose;
 	Array_GetPtr methodthunk_Array_GetPtr;
 	Dictionary_GetPtr methodthunk_Dictionary_GetPtr;
 	IsArrayGenericType methodthunk_MarshalUtils_IsArrayGenericType;
diff --git a/modules/mono/signal_awaiter_utils.cpp b/modules/mono/signal_awaiter_utils.cpp
index add1e506ea..b4c78df538 100644
--- a/modules/mono/signal_awaiter_utils.cpp
+++ b/modules/mono/signal_awaiter_utils.cpp
@@ -119,7 +119,7 @@ void SignalAwaiterHandle::_bind_methods() {
 }
 
 SignalAwaiterHandle::SignalAwaiterHandle(MonoObject *p_managed) :
-		MonoGCHandle(MonoGCHandle::make_strong_handle(p_managed), STRONG_HANDLE) {
+		MonoGCHandle(MonoGCHandle::new_strong_handle(p_managed), STRONG_HANDLE) {
 
 #ifdef DEBUG_ENABLED
 	conn_target_id = 0;