fs: add skeleton dir for sysmodule code

Please note this isn't likely to immediately be the active ams project.

stratosphere/fs/source/fs_main.cpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+
+namespace ams {
+
+    namespace init {
+
+        void InitializeSystemModule() {
+            /* TODO? */
+
+            /* Initialize services we need. */
+            R_ABORT_UNLESS(sm::Initialize());
+
+            /* TODO? */
+
+            /* Verify that we can sanely execute. */
+            ams::CheckApiVersion();
+        }
+
+        void FinalizeSystemModule() { /* ... */ }
+
+        void Startup() { /* ... */ }
+
+    }
+
+    void NORETURN Exit(int rc) {
+        AMS_UNUSED(rc);
+        AMS_ABORT("Exit called by immortal process");
+    }
+
+    void Main() {
+        /* Initialize fssystem library for FS. */
+        fssystem::InitializeForFileSystemProxy();
+    }
+
+}