exo: implement start of mariko fatal handler

exosphere/mariko_fatal/source/fatal_abort_impl.cpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018-2020 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 <exosphere.hpp>
+
+namespace ams::diag {
+
+    void AbortImpl() {
+        AMS_SECMON_LOG("AbortImpl was called\n");
+
+        /* TODO: Reboot */
+        AMS_INFINITE_LOOP();
+    }
+
+    #include <exosphere/diag/diag_detailed_assertion_impl.inc>
+
+}