sapi: New implementation of rtems_panic()

The previous rtems_panic() implementation was quite heavy weight.  It
depended on _exit() which calls the global destructors.  It used
fprintf(stderr, ...) for output which depends on an initialized console
device and the complex fprintf().

Introduce a new fatal source RTEMS_FATAL_SOURCE_PANIC for rtems_panic()
and output via vprintk().

Update #3244.

1 files changed, 32 insertions, 0 deletions

diff --git a/cpukit/sapi/src/panic.c b/cpukit/sapi/src/panic.c
new file mode 100644
index 0000000000..34b6f75213
--- /dev/null
+++ b/cpukit/sapi/src/panic.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/fatal.h>
+
+#include <stdarg.h>
+
+void rtems_panic( const char *fmt, ... )
+{
+  va_list ap;
+
+  va_start( ap, fmt );
+  vprintk( fmt, ap );
+  va_end( ap);
+
+  _Terminate( RTEMS_FATAL_SOURCE_PANIC, (Internal_errors_t) fmt );
+}