xref: /onnv-gate/usr/src/cmd/mdb/common/modules/md/walk_units.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate #include "mdinclude.h"
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate 
32*0Sstevel@tonic-gate typedef struct unit_data {
33*0Sstevel@tonic-gate 	int	nunits;
34*0Sstevel@tonic-gate 	int	do_all;
35*0Sstevel@tonic-gate 	int	setno;
36*0Sstevel@tonic-gate } unit_data_t;
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate  * walk the units
40*0Sstevel@tonic-gate  */
41*0Sstevel@tonic-gate /* ARGSUSED */
42*0Sstevel@tonic-gate int
units_walk_init(mdb_walk_state_t * wsp)43*0Sstevel@tonic-gate units_walk_init(mdb_walk_state_t *wsp)
44*0Sstevel@tonic-gate {
45*0Sstevel@tonic-gate 	uintptr_t	addr;
46*0Sstevel@tonic-gate 	int		i;
47*0Sstevel@tonic-gate 
48*0Sstevel@tonic-gate 	snarf_sets();
49*0Sstevel@tonic-gate 	wsp->walk_data = mdb_alloc(sizeof (unit_data_t), UM_SLEEP);
50*0Sstevel@tonic-gate 	/*
51*0Sstevel@tonic-gate 	 * walk_data contains the following information:
52*0Sstevel@tonic-gate 	 *	 nunits : the number of units of the set we've printed out.
53*0Sstevel@tonic-gate 	 *	 setno: set number we're printing out the information from.
54*0Sstevel@tonic-gate 	 *	 do_all: print all the sets on the system or not.
55*0Sstevel@tonic-gate 	 */
56*0Sstevel@tonic-gate 	((unit_data_t *)wsp->walk_data)->nunits = 0;
57*0Sstevel@tonic-gate 	if (wsp->walk_addr == NULL) {
58*0Sstevel@tonic-gate 		/* if no address is specified, walk all units of all sets */
59*0Sstevel@tonic-gate 		mdb_printf("Units for set number 0\n");
60*0Sstevel@tonic-gate 		addr = (uintptr_t)mdset[0].s_un;
61*0Sstevel@tonic-gate 		wsp->walk_addr = addr;
62*0Sstevel@tonic-gate 		((unit_data_t *)wsp->walk_data)->setno = 0;
63*0Sstevel@tonic-gate 		((unit_data_t *)wsp->walk_data)->do_all = 1;
64*0Sstevel@tonic-gate 	} else {
65*0Sstevel@tonic-gate 		/* walk the specified set */
66*0Sstevel@tonic-gate 		((unit_data_t *)wsp->walk_data)->do_all = 0;
67*0Sstevel@tonic-gate 		for (i = 0; i < md_nsets; i++) {
68*0Sstevel@tonic-gate 			if (mdset[i].s_db == (void **)wsp->walk_addr) {
69*0Sstevel@tonic-gate 				wsp->walk_addr = (uintptr_t)mdset[i].s_un;
70*0Sstevel@tonic-gate 				((unit_data_t *)wsp->walk_data)->setno = i;
71*0Sstevel@tonic-gate 				return (WALK_NEXT);
72*0Sstevel@tonic-gate 			}
73*0Sstevel@tonic-gate 		}
74*0Sstevel@tonic-gate 	}
75*0Sstevel@tonic-gate 	return (WALK_NEXT);
76*0Sstevel@tonic-gate }
77*0Sstevel@tonic-gate 
78*0Sstevel@tonic-gate int
units_walk_step(mdb_walk_state_t * wsp)79*0Sstevel@tonic-gate units_walk_step(mdb_walk_state_t *wsp)
80*0Sstevel@tonic-gate {
81*0Sstevel@tonic-gate 	int		status;
82*0Sstevel@tonic-gate 	unit_data_t	*un = (unit_data_t *)wsp->walk_data;
83*0Sstevel@tonic-gate 	void		**ptr;
84*0Sstevel@tonic-gate 
85*0Sstevel@tonic-gate 	if (un->nunits >= md_nunits) {
86*0Sstevel@tonic-gate 		un->setno += 1;
87*0Sstevel@tonic-gate 		if ((un->setno < md_nsets) && (un->do_all == 1)) {
88*0Sstevel@tonic-gate 			un->nunits = 0;
89*0Sstevel@tonic-gate 			wsp->walk_addr = (uintptr_t)mdset[un->setno].s_un;
90*0Sstevel@tonic-gate 			if (wsp->walk_addr != NULL)
91*0Sstevel@tonic-gate 				mdb_printf("Units for set number %d\n",
92*0Sstevel@tonic-gate 				    un->setno);
93*0Sstevel@tonic-gate 		} else {
94*0Sstevel@tonic-gate 			return (WALK_DONE);
95*0Sstevel@tonic-gate 		}
96*0Sstevel@tonic-gate 	}
97*0Sstevel@tonic-gate 
98*0Sstevel@tonic-gate 	if (wsp->walk_addr == NULL) {
99*0Sstevel@tonic-gate 		un->nunits = md_nunits;
100*0Sstevel@tonic-gate 		return (WALK_NEXT);
101*0Sstevel@tonic-gate 	}
102*0Sstevel@tonic-gate 
103*0Sstevel@tonic-gate 	status = wsp->walk_callback(wsp->walk_addr, NULL, wsp->walk_cbdata);
104*0Sstevel@tonic-gate 
105*0Sstevel@tonic-gate 	if (status != WALK_DONE) {
106*0Sstevel@tonic-gate 		ptr = (void **)wsp->walk_addr;
107*0Sstevel@tonic-gate 		ptr++;
108*0Sstevel@tonic-gate 		wsp->walk_addr = (uintptr_t)ptr;
109*0Sstevel@tonic-gate 		un->nunits += 1;
110*0Sstevel@tonic-gate 	}
111*0Sstevel@tonic-gate 	return (status);
112*0Sstevel@tonic-gate }
113*0Sstevel@tonic-gate 
114*0Sstevel@tonic-gate void
units_walk_fini(mdb_walk_state_t * wsp)115*0Sstevel@tonic-gate units_walk_fini(mdb_walk_state_t *wsp)
116*0Sstevel@tonic-gate {
117*0Sstevel@tonic-gate 	mdb_free(wsp->walk_data, sizeof (unit_data_t));
118*0Sstevel@tonic-gate }
119