2003-02-20 Till Straumann <strauman@slac.stanford.edu>

PR 349/bsps
	* console/console.c, console/uart.c, console/uart.h: implement
	IOCTLs for the serial (UART) console to install/retrieve a BREAK-IRQ
	callback.  The callback routine (if installed) is invoked from the
	UART ISR when a BREAK interrupt is detected.  This can be used
	e.g. to enforce a "hotkey" reboot a la vxWorks Ctrl-X (although we
	use the serial line break condition) NOTE: The callback runs in
	ISR context.

c/src/lib/libbsp/powerpc/shared/console/reboot.c

@@ -1,6 +1,8 @@
 /* $Id$ */
 
 #include "console.inl"
+#include <rtems/bspIo.h>
+#include <libcpu/stackTrace.h>
 
 /*-------------------------------------------------------------------------+
 |         Function: rtemsReboot
@@ -11,6 +13,8 @@
 +--------------------------------------------------------------------------*/
 void rtemsReboot(void)
 {
+  printk("Printing a stack trace for your convenience :-)\n");
+  CPU_print_stack();
   /* shutdown and reboot */
   kbd_outb(0x4, 0xFE);      /* use keyboard controler to do the job... */
 } /* rtemsReboot */