fusee_cpp: rename source dir to fusee

fusee/program/source/fusee_crt0.cpp

@@ -0,0 +1,50 @@
+/*
+ * 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>
+#include "fusee_exception_handler.hpp"
+
+extern "C" void __libc_init_array();
+
+namespace ams::nxboot::crt0 {
+
+    namespace {
+
+        ALWAYS_INLINE void SetExceptionVector(u32 which, uintptr_t impl) {
+            reg::Write(secmon::MemoryRegionPhysicalDeviceExceptionVectors.GetAddress() + 0x200 + sizeof(u32) * which, static_cast<u32>(impl));
+        }
+
+    }
+
+    void Initialize() {
+        /* TODO: Collect timing information? */
+
+        /* Setup exception vectors. */
+        {
+            SetExceptionVector(0, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler0));
+            SetExceptionVector(1, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler1));
+            SetExceptionVector(2, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler2));
+            SetExceptionVector(3, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler3));
+            SetExceptionVector(4, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler4));
+            SetExceptionVector(5, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler5));
+            SetExceptionVector(6, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler6));
+            SetExceptionVector(7, reinterpret_cast<uintptr_t>(::ams::nxboot::ExceptionHandler7));
+        }
+
+        /* Call init array. */
+        __libc_init_array();
+    }
+
+}