1 files changed, 16 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_start.c b/nuttx/arch/arm/src/stm32/stm32_start.c
index a2f82f7b2..add226b07 100644
--- a/nuttx/arch/arm/src/stm32/stm32_start.c
+++ b/nuttx/arch/arm/src/stm32/stm32_start.c
@@ -77,6 +77,16 @@
 #endif
 
 /****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#ifdef CONFIG_ARMV7M_STACKCHECK
+/* we need to get r10 set before we can allow instrumentation calls */
+
+void __start(void) __attribute__ ((no_instrument_function));
+#endif
+
+/****************************************************************************
  * Name: stm32_fpuconfig
  *
  * Description:
@@ -183,6 +193,12 @@ void __start(void)
   const uint32_t *src;
   uint32_t *dest;
 
+#ifdef CONFIG_ARMV7M_STACKCHECK
+  /* Set the stack limit before we attempt to call any functions */
+
+  __asm__ volatile ("sub r10, sp, %0" : : "r" (CONFIG_IDLETHREAD_STACKSIZE - 64) : );
+#endif
+
   /* Configure the uart so that we can get debug output as soon as possible */
 
   stm32_clockconfig();