From 34a467fa89d01c8248fabc52bc5a4f5edf67570a Mon Sep 17 00:00:00 2001
From: arighi <arighi@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 31 Mar 2010 14:41:55 +0000
Subject: [PATCH] lm3s1968: log an error and halt forever in case of unhandled
 IRQs.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3356 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/cpu/cortex-m3/drv/irq_lm3s.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/bertos/cpu/cortex-m3/drv/irq_lm3s.c b/bertos/cpu/cortex-m3/drv/irq_lm3s.c
index c1df5019..2ff83575 100644
--- a/bertos/cpu/cortex-m3/drv/irq_lm3s.c
+++ b/bertos/cpu/cortex-m3/drv/irq_lm3s.c
@@ -35,7 +35,8 @@
  * \author Andrea Righi <arighi@develer.com>
  */
 
-#include <cfg/debug.h>
+#include <cfg/debug.h> /* ASSERT() */
+#include <cfg/log.h> /* LOG_ERR() */
 #include <cpu/irq.h>
 #include "io/lm3s.h"
 #include "irq_lm3s.h"
@@ -43,9 +44,15 @@
 static void (*irq_table[NUM_INTERRUPTS])(void)
 			__attribute__((section("vtable")));
 
-static void unhandled_isr(void)
+/* Unhandled IRQ */
+static NORETURN NAKED void unhandled_isr(void)
 {
-	/* Unhandled IRQ */
+	reg32_t reg;
+
+	asm volatile ("mrs %0, ipsr" : "=r"(reg));
+	LOG_ERR("unhandled IRQ %lu\n", reg);
+	PAUSE;
+	UNREACHABLE();
 	ASSERT(0);
 }
 
-- 
2.25.1