Tease apart utility.hpp, other header dependencies.

Trying to get a host-testable FSK demodulator, and finding a lot of M4- and ChibiOS-specific code is getting included. Boo.

firmware/common/chibios_cpp.cpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "chibios_cpp.hpp"
+
+#include <ch.h>
+
+void* operator new(size_t size) {
+	return chHeapAlloc(0x0, size);
+}
+
+void* operator new[](size_t size) {
+	return chHeapAlloc(0x0, size);
+}
+
+void operator delete(void* p) noexcept {
+	chHeapFree(p);
+}
+
+void operator delete[](void* p) noexcept {
+	chHeapFree(p);
+}