[LPC4088] Making it possible to reserve stack space by weak function.

Author: arebert

libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC408X/TOOLCHAIN_ARM_STD/sys_helper.cpp

@@ -0,0 +1,19 @@
+/* mbed Microcontroller Library - stackheap
+ * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
+ *
+ */
+
+#include "sys_helper.h"
+
+/* This function specifies the amount of memory of the internal RAM to
+   reserve for the stack. The default implementation will reserve 0 bytes
+   which gives the normal behaviour where the stack and heap share all the
+   internal RAM.
+
+   You can override this function in your code to reserve a number of bytes
+   for the stack.
+*/
+extern "C" WEAK uint32_t __reserved_stack_size();
+extern "C" WEAK uint32_t __reserved_stack_size() {
+    return 0; // return 0 to indicate that nothing is reserved
+}

libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC408X/TOOLCHAIN_ARM_STD/sys_helper.h

@@ -0,0 +1,17 @@
+#ifndef SYS_HELPER_H
+#define SYS_HELPER_H
+
+#include <stdint.h>
+#include "toolchain.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint32_t __reserved_stack_size();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif