1 /*
2 * Kernel Debugger Architecture Dependent POD functions.
3 *
4 * Copyright (C) 1999-2003 Silicon Graphics, Inc. All Rights Reserved
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it would be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 *
14 * Further, this software is distributed without any warranty that it is
15 * free of the rightful claim of any third person regarding infringement
16 * or the like. Any license provided herein, whether implied or
17 * otherwise, applies only to this software file. Patent licenses, if
18 * any, provided herein do not apply to combinations of this program with
19 * other software, or any other product whatsoever.
20 *
21 * You should have received a copy of the GNU General Public
22 * License along with this program; if not, write the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
24 *
25 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
26 * Mountain View, CA 94043, or:
27 *
28 * http://www.sgi.com
29 *
30 * For further information regarding this notice, see:
31 *
32 * http://oss.sgi.com/projects/GenInfo/NoticeExplan
33 */
34
35 #include <linux/types.h>
36 #include <linux/kdb.h>
37 //#include <linux/kdbprivate.h>
38
39 /**
40 * kdba_io - enter POD mode from kdb
41 * @argc: arg count
42 * @argv: arg values
43 * @envp: kdb env. vars
44 * @regs: current register state
45 *
46 * Enter POD mode from kdb using SGI SN specific SAL function call.
47 */
48 static int
kdba_io(int argc,const char ** argv,const char ** envp,struct pt_regs * regs)49 kdba_io(int argc, const char **argv, const char **envp, struct pt_regs *regs)
50 {
51 kdb_printf("kdba_io entered with addr 0x%p\n", (void *) regs);
52
53 return(0);
54 }
55
56 /**
57 * kdba_io_init - register 'io' command with kdb
58 *
59 * Register the 'io' command with kdb at load time.
60 */
61 void
kdba_io_init(void)62 kdba_io_init(void)
63 {
64 kdb_register("io", kdba_io, "<vaddr>", "Display IO Contents", 0);
65 }
66
67 /**
68 * kdba_io_exit - unregister the 'io' command
69 *
70 * Tell kdb that the 'io' command is no longer available.
71 */
72 static void __exit
kdba_exit(void)73 kdba_exit(void)
74 {
75 kdb_unregister("io");
76 }
77