From ac7d5ef06a6d6e8d84abbd1f0b82162725f98326 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 11 May 1995 17:39:37 +0000 Subject: Initial revision --- c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c | 53 ++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c (limited to 'c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c') diff --git a/c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c b/c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c new file mode 100644 index 0000000000..215a53cc46 --- /dev/null +++ b/c/src/lib/libbsp/m68k/mvme162/startup/bspclean.c @@ -0,0 +1,53 @@ +/* + * This routine returns control to 162Bug. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * + * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. + * EISCAT Scientific Association. M.Savitski + * + * This material is a part of the MVME162 Board Support Package + * for the RTEMS executive. Its licensing policies are those of the + * RTEMS above. + * + * $Id$ + */ + +#include +#include +#include + +void bsp_return_to_monitor_trap() +{ + extern void start( void ); + + lcsr->intr_ena = 0; /* disable interrupts */ + m68k_set_vbr(0xFFE00000); /* restore 162Bug vectors */ + asm volatile( "trap #15" ); /* trap to 162Bug */ + asm volatile( ".short 0x63" ); /* return to 162Bug (.RETURN) */ + /* restart program */ + /* + * This does not work on the 162.... + */ +#if 0 + { register volatile void *start_addr; + + start_addr = start; + + asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) ); + } +#endif +} + +void bsp_cleanup( void ) +{ + M68Kvec[ 45 ] = bsp_return_to_monitor_trap; /* install handler */ + asm volatile( "trap #13" ); /* insures SUPV mode */ +} -- cgit v1.2.3