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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include "mdinclude.h"
30
31
32 typedef struct unit_data {
33 int nunits;
34 int do_all;
35 int setno;
36 } unit_data_t;
37
38 /*
39 * walk the units
40 */
41 /* ARGSUSED */
42 int
units_walk_init(mdb_walk_state_t * wsp)43 units_walk_init(mdb_walk_state_t *wsp)
44 {
45 uintptr_t addr;
46 int i;
47
48 snarf_sets();
49 wsp->walk_data = mdb_alloc(sizeof (unit_data_t), UM_SLEEP);
50 /*
51 * walk_data contains the following information:
52 * nunits : the number of units of the set we've printed out.
53 * setno: set number we're printing out the information from.
54 * do_all: print all the sets on the system or not.
55 */
56 ((unit_data_t *)wsp->walk_data)->nunits = 0;
57 if (wsp->walk_addr == NULL) {
58 /* if no address is specified, walk all units of all sets */
59 mdb_printf("Units for set number 0\n");
60 addr = (uintptr_t)mdset[0].s_un;
61 wsp->walk_addr = addr;
62 ((unit_data_t *)wsp->walk_data)->setno = 0;
63 ((unit_data_t *)wsp->walk_data)->do_all = 1;
64 } else {
65 /* walk the specified set */
66 ((unit_data_t *)wsp->walk_data)->do_all = 0;
67 for (i = 0; i < md_nsets; i++) {
68 if (mdset[i].s_db == (void **)wsp->walk_addr) {
69 wsp->walk_addr = (uintptr_t)mdset[i].s_un;
70 ((unit_data_t *)wsp->walk_data)->setno = i;
71 return (WALK_NEXT);
72 }
73 }
74 }
75 return (WALK_NEXT);
76 }
77
78 int
units_walk_step(mdb_walk_state_t * wsp)79 units_walk_step(mdb_walk_state_t *wsp)
80 {
81 int status;
82 unit_data_t *un = (unit_data_t *)wsp->walk_data;
83 void **ptr;
84
85 if (un->nunits >= md_nunits) {
86 un->setno += 1;
87 if ((un->setno < md_nsets) && (un->do_all == 1)) {
88 un->nunits = 0;
89 wsp->walk_addr = (uintptr_t)mdset[un->setno].s_un;
90 if (wsp->walk_addr != NULL)
91 mdb_printf("Units for set number %d\n",
92 un->setno);
93 } else {
94 return (WALK_DONE);
95 }
96 }
97
98 if (wsp->walk_addr == NULL) {
99 un->nunits = md_nunits;
100 return (WALK_NEXT);
101 }
102
103 status = wsp->walk_callback(wsp->walk_addr, NULL, wsp->walk_cbdata);
104
105 if (status != WALK_DONE) {
106 ptr = (void **)wsp->walk_addr;
107 ptr++;
108 wsp->walk_addr = (uintptr_t)ptr;
109 un->nunits += 1;
110 }
111 return (status);
112 }
113
114 void
units_walk_fini(mdb_walk_state_t * wsp)115 units_walk_fini(mdb_walk_state_t *wsp)
116 {
117 mdb_free(wsp->walk_data, sizeof (unit_data_t));
118 }
119