[PATCH] sptests/spfatal26: Use an illegal instruction

[Sebastian Huber]

On some architectures/simulators it is difficult to provoke an
exception with misaligned or illegal data loads.  Use an illegal
instruction instead.

Update #3433.
---
 testsuites/sptests/spfatal26/init.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/testsuites/sptests/spfatal26/init.c b/testsuites/sptests/spfatal26/init.c
index 1848659d6a..7d635f3b84 100644
--- a/testsuites/sptests/spfatal26/init.c
+++ b/testsuites/sptests/spfatal26/init.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ * Copyright (c) 2012, 2018 embedded brains GmbH.  All rights reserved.
  *
  *  embedded brains GmbH
  *  Obere Lagerstr. 30
@@ -24,6 +24,13 @@
 
 const char rtems_test_name[] = "SPFATAL 26";
 
+static void provoke_illegal_instruction_exception( void )
+{
+#ifdef __riscv
+  __asm__ volatile (".word 0");
+#endif
+}
+
 static void provoke_aligment_or_data_access_exception( void )
 {
   uintptr_t one = 1;
@@ -53,6 +60,7 @@ static void Init( rtems_task_argument arg )
 {
   TEST_BEGIN();
 
+  provoke_illegal_instruction_exception();
   provoke_aligment_or_data_access_exception();
 
   rtems_test_assert( 0 );
-- 
2.13.7