altos: Add stack-guard code. Uses STM MPU to trap stack overflow.

[fw/altos] / src / core / ao_task.c

diff --git a/src/core/ao_task.c b/src/core/ao_task.c
index c2b1b2700453921e04f142c3db3849a02f800dfb..df70b906ccfa6bec6c793c417a25bc4d4e652ff6 100644 (file)
--- a/src/core/ao_task.c
+++ b/src/core/ao_task.c
@@ -20,6 +20,9 @@
 #if HAS_SAMPLE_PROFILE
 #include <ao_sample_profile.h>
 #endif
+#if HAS_STACK_GUARD
+#include <ao_mpu.h>
+#endif
 
 #define AO_NO_TASK_INDEX       0xff
 
@@ -127,6 +130,9 @@ ao_yield(void) ao_arch_naked_define
        ao_cur_task->start = ao_sample_profile_timer_value();
 #endif
        }
+#if HAS_STACK_GUARD
+       ao_mpu_stack_guard(ao_cur_task->stack);
+#endif
 #if AO_CHECK_STACK
        cli();
        in_yield = 0;