diff --git a/common/mbed_alloc_wrappers.cpp b/common/mbed_alloc_wrappers.cpp
new file mode 100644
index 0000000..2f17200
--- /dev/null
+++ b/common/mbed_alloc_wrappers.cpp
@@ -0,0 +1,64 @@
+#include <stddef.h>







+#include <stdio.h>




+#include <string.h>




+#include <stdlib.h>
+
+/******************************************************************************/
+/* GCC memory allocation wrappers                                             */
+/******************************************************************************/
+
+#if defined(TOOLCHAIN_GCC)
+
+extern "C" {
+    void *__real__malloc_r(struct _reent *r, size_t size);
+    void *__real__memalign_r(struct _reent *r, size_t alignment, size_t bytes);
+    void *__real__realloc_r(struct _reent *r, void *ptr, size_t size);
+    void __real__free_r(struct _reent *r, void *ptr);
+    void *__real__calloc_r(struct _reent *r, size_t nmemb, size_t size);
+    void *malloc_wrapper(struct _reent *r, size_t size, void *caller);
+    void free_wrapper(struct _reent *r, void *ptr, void *caller);
+}
+
+
+extern "C" void *__wrap__malloc_r(struct _reent *r, size_t size)
+{
+    return malloc_wrapper(r, size, __builtin_extract_return_addr(__builtin_return_address(0)));
+}
+
+extern "C" void *malloc_wrapper(struct _reent *r, size_t size, void *caller)
+{
+    void *ptr = NULL;
+    ptr = __real__malloc_r(r, size);
+    return ptr;
+}
+
+extern "C" void *__wrap__realloc_r(struct _reent *r, void *ptr, size_t size)
+{
+    void *new_ptr = NULL;
+    new_ptr = __real__realloc_r(r, ptr, size);
+    return new_ptr;
+}
+
+extern "C" void __wrap__free_r(struct _reent *r, void *ptr)
+{
+    free_wrapper(r, ptr, __builtin_extract_return_addr(__builtin_return_address(0)));
+}
+
+extern "C" void free_wrapper(struct _reent *r, void *ptr, void *caller)
+{
+    __real__free_r(r, ptr);
+}
+
+extern "C" void *__wrap__calloc_r(struct _reent *r, size_t nmemb, size_t size)
+{
+    void *ptr = NULL;
+    ptr = __real__calloc_r(r, nmemb, size);
+    return ptr;
+}
+
+extern "C" void *__wrap__memalign_r(struct _reent *r, size_t alignment, size_t bytes)
+{
+    return __real__memalign_r(r, alignment, bytes);
+}
+
+#endif // #if defined(TOOLCHAIN_GCC)
diff --git a/common/retarget.cpp b/common/retarget.cpp
index 82411ab..13f2ace 100644
--- a/common/retarget.cpp
+++ b/common/retarget.cpp
@@ -524,6 +524,40 @@ extern "C" void exit(int return_code) {
 } //namespace std
 #endif
 
+#if defined(TOOLCHAIN_GCC)
+
+/*
+ * Depending on how newlib is  configured, it is often not enough to define
+ * __aeabi_atexit, __cxa_atexit and __cxa_finalize in order to override the
+ * behavior regarding the registration of handlers with atexit.
+ *
+ * To overcome this limitation, exit and atexit are overriden here.
+ */
+extern "C" {
+
+    /**
+     * @brief Retarget of exit for GCC.
+     * @details Unlike the standard version, this function doesn't call any function
+     * registered with atexit before calling _exit.
+     */
+    void __wrap_exit(int return_code)
+    {
+        _exit(return_code);
+    }
+
+    /**
+     * @brief Retarget atexit from GCC.
+     * @details This function will always fail and never register any handler to be
+     * called at exit.
+     */
+    int __wrap_atexit(void (*func)())
+    {
+        return 1;
+    }
+
+}
+
+#endif
 
 namespace mbed {
 
diff --git a/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_ARM_STD/sys.cpp b/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_ARM_STD/sys.cpp
index 2f1024a..ac6a153 100644
--- a/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_ARM_STD/sys.cpp
+++ b/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_ARM_STD/sys.cpp
@@ -12,6 +12,11 @@ extern "C" {
 #include <rt_misc.h>
 #include <stdint.h>
 
+#if __ARMCC_VERSION >= 6000000
+#include <arm_compat.h>
+#endif
+
+
 extern char Image$$RW_IRAM1$$ZI$$Limit[];
 
 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
diff --git a/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_GCC_ARM/TARGET_MCU_NRF51_16K_S110/NRF51822.ld b/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_GCC_ARM/TARGET_MCU_NRF51_16K_S110/NRF51822.ld
index 43e0ac8..cb472e5 100644
--- a/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_GCC_ARM/TARGET_MCU_NRF51_16K_S110/NRF51822.ld
+++ b/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_GCC_ARM/TARGET_MCU_NRF51_16K_S110/NRF51822.ld
@@ -2,7 +2,7 @@
 
 MEMORY
 {
-  FLASH (rx) : ORIGIN = 0x00016000, LENGTH = 0x2A000
+  FLASH (rx) : ORIGIN = 0x00018000, LENGTH = 0x28000
   RAM (rwx) :  ORIGIN = 0x20002000, LENGTH = 0x2000
 }