initial, with blinking led

system/src/newlib/_exit.c

@@ -0,0 +1,81 @@
+/*
+ * This file is part of the µOS++ distribution.
+ *   (https://github.com/micro-os-plus)
+ * Copyright (c) 2014 Liviu Ionescu.
+ *
+ * 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 <stdlib.h>
+#include "diag/Trace.h"
+
+// ----------------------------------------------------------------------------
+
+#if !defined(DEBUG)
+extern void
+__attribute__((noreturn))
+__reset_hardware(void);
+#endif
+
+// ----------------------------------------------------------------------------
+
+// Forward declaration
+
+void
+_exit(int code);
+
+// ----------------------------------------------------------------------------
+
+// On Release, call the hardware reset procedure.
+// On Debug we just enter an infinite loop, to be used as landmark when halting
+// the debugger.
+//
+// It can be redefined in the application, if more functionality
+// is required.
+
+void
+__attribute__((weak))
+_exit(int code __attribute__((unused)))
+{
+#if !defined(DEBUG)
+  __reset_hardware();
+#endif
+
+  // TODO: write on trace
+  while (1)
+    ;
+}
+
+// ----------------------------------------------------------------------------
+
+void
+__attribute__((weak,noreturn))
+abort(void)
+{
+  trace_puts("abort(), exiting...");
+
+  _exit(1);
+}
+
+// ----------------------------------------------------------------------------