debug/0 address: Add 0 address access panic configuration

Implemented using up_debugpoint_add

Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>

Kconfig

@@ -2432,6 +2432,14 @@ endif # DEBUG_CORESIGHT
 
 endif # DEBUG_FEATURES
 
+config ARCH_PROTECT_ZERO_ADDRESS
+	bool "Protect address zero"
+	depends on ARCH_HAVE_DEBUG
+	default n
+	---help---
+		When the program accesses address 0, it will assert automatically.
+		Hardware support is required, such as ARM V8M DWT watchpoint
+
 config ARCH_HAVE_STACKCHECK
 	bool
 	default n

sched/irq/irq_initialize.c

@@ -29,6 +29,7 @@
 #include <nuttx/irq.h>
 #include <nuttx/trace.h>
 
+#include <assert.h>
 #include "irq/irq.h"
 
 /****************************************************************************
@@ -59,6 +60,14 @@ struct irq_info_s g_irqvector[NR_IRQS];
  * Public Functions
  ****************************************************************************/
 
+#ifdef CONFIG_ARCH_PROTECT_ZERO_ADDRESS
+static void zero_addr_handler(int type, FAR void *addr, size_t size,
+                              FAR void *arg)
+{
+  PANIC();
+}
+#endif
+
 /****************************************************************************
  * Name: irq_initialize
  *
@@ -87,5 +96,11 @@ void irq_initialize(void)
 #endif
 
   up_irqinitialize();
+
+#ifdef CONFIG_ARCH_PROTECT_ZERO_ADDRESS
+  up_debugpoint_add(DEBUGPOINT_WATCHPOINT_RW, 0, 0,
+                    zero_addr_handler, NULL);
+#endif
+
   sched_trace_end();
 }