kmdb_conf.c revision 11053:f33a1c7f3155 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <sys/isa_defs.h>
27#include <sys/utsname.h>
28#include <strings.h>
29
30#include <kmdb/kmdb_dpi.h>
31#include <kmdb/kmdb_kdi.h>
32#include <mdb/mdb_err.h>
33#include <mdb/mdb.h>
34
35static const char _mdb_version[] = KMDB_VERSION;
36
37const char *
38mdb_conf_version(void)
39{
40	return (_mdb_version);
41}
42
43const char *
44mdb_conf_isa(void)
45{
46#if defined(__sparc)
47#if defined(__sparcv9)
48	return ("sparcv9");
49#else	/* __sparcv9 */
50	return ("sparc");
51#endif	/* __sparcv9 */
52#elif defined(__amd64)
53	return ("amd64");
54#elif defined(__i386)
55	return ("i386");
56#else
57#error	"unknown ISA"
58#endif
59}
60
61/*
62 * These functions are needed for path evaluation, and must be run prior to
63 * target initialization.  The kmdb symbol resolution machinery hasn't been
64 * initialized at this point, so we have to rely on the kernel to look up
65 * utsname and platform for us.
66 */
67
68void
69mdb_conf_uname(struct utsname *utsp)
70{
71	bzero(utsp, sizeof (struct utsname));
72
73	if (kmdb_dpi_get_state(NULL) == DPI_STATE_INIT) {
74		struct utsname *utsaddr;
75
76		/*
77		 * The kernel is running during DPI initialization, so we'll ask
78		 * it to do the lookup.  Our own symbol resolution facilities
79		 * won't be available until after the debugger starts.
80		 */
81		if ((utsaddr = (struct utsname *)kmdb_kdi_lookup_by_name("unix",
82		    "utsname")) == NULL) {
83			warn("'utsname' symbol is missing from kernel\n");
84			(void) strcpy(utsp->sysname, "unknown");
85			return;
86		}
87
88		bcopy(utsaddr, utsp, sizeof (struct utsname));
89	} else
90		(void) mdb_tgt_uname(mdb.m_target, utsp);
91}
92
93const char *
94mdb_conf_platform(void)
95{
96	if (kmdb_dpi_get_state(NULL) == DPI_STATE_INIT) {
97		static char plat[SYS_NMLN];
98		caddr_t plataddr;
99
100		/*
101		 * The kernel is running during DPI initialization, so we'll ask
102		 * it to do the lookup.  Our own symbol resolution facilities
103		 * won't be available until after the debugger starts.
104		 */
105		if ((plataddr = (caddr_t)kmdb_kdi_lookup_by_name("unix",
106		    "platform")) == NULL) {
107			warn("conf: 'platform' symbol is missing from "
108			    "kernel\n");
109			return ("unknown");
110		}
111
112		(void) strncpy(plat, plataddr, sizeof (plat));
113		plat[sizeof (plat) - 1] = '\0';
114
115		return (plat);
116	} else
117		return (mdb_tgt_platform(mdb.m_target));
118}
119