source: SVN/rincon/u-boot/cpu/microblaze/exception.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 1.9 KB
Line 
1/*
2 * (C) Copyright 2007 Michal Simek
3 *
4 * Michal  SIMEK <monstr@monstr.eu>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
26#include <asm/asm.h>
27
28void _hw_exception_handler (void)
29{
30        int address = 0;
31        int state = 0;
32        /* loading address of exception EAR */
33        MFS (address, rear);
34        /* loading excetpion state register ESR */
35        MFS (state, resr);
36        printf ("Hardware exception at 0x%x address\n", address);
37        switch (state & 0x1f) { /* mask on exception cause */
38        case 0x1:
39                puts ("Unaligned data access exception\n");
40                break;
41        case 0x2:
42                puts ("Illegal op-code exception\n");
43                break;
44        case 0x3:
45                puts ("Instruction bus error exception\n");
46                break;
47        case 0x4:
48                puts ("Data bus error exception\n");
49                break;
50        case 0x5:
51                puts ("Divide by zero exception\n");
52                break;
53#ifdef MICROBLAZE_V5
54        case 0x1000:
55                puts ("Exception in delay slot\n");
56                break;
57#endif
58        default:
59                puts ("Undefined cause\n");
60                break;
61        }
62        printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half"));
63        printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load"));
64        printf ("Register R%x\n", (state & 0x3E) >> 5);
65        hang ();
66}
67
68#ifdef CFG_USR_EXCEP
69void _exception_handler (void)
70{
71        puts ("User vector_exception\n");
72        hang ();
73}
74#endif
Note: See TracBrowser for help on using the repository browser.