subsystem: cleanup misc and make cpp a subsystem

Move a way from misc/ and put in its own subsystem to allow enhancements
in the future and make it a core part of Zephyr, not just something
misc.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

subsys/cpp/cpp_ctors.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2012-2014 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @file - Constructor module
+ * @brief
+ * The ctors section contains a list of function pointers that execute the
+ * C++ constructors of static global objects. These must be executed before
+ * the application's main() routine.
+ *
+ * NOTE: Not all compilers put those function pointers into the ctors section;
+ * some put them into the init_array section instead.
+ */
+
+/* What a constructor function pointer looks like */
+
+typedef void (*CtorFuncPtr)(void);
+
+/* Constructor function pointer list is generated by the linker script. */
+
+extern CtorFuncPtr __CTOR_LIST__[];
+extern CtorFuncPtr __CTOR_END__[];
+
+/**
+ *
+ * @brief Invoke all C++ style global object constructors
+ *
+ * This routine is invoked by the kernel prior to the execution of the
+ * application's main().
+ */
+void __do_global_ctors_aux(void)
+{
+	unsigned int nCtors;
+
+	nCtors = (unsigned int)__CTOR_LIST__[0];
+
+	while (nCtors >= 1) {
+		__CTOR_LIST__[nCtors--]();
+	}
+}