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 (c) 2000 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
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 <sys/mdb_modapi.h>
30*0Sstevel@tonic-gate #include <sys/thread.h>
31*0Sstevel@tonic-gate #include "ctxop.h"
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate int
ctxop_walk_init(mdb_walk_state_t * wsp)34*0Sstevel@tonic-gate ctxop_walk_init(mdb_walk_state_t *wsp)
35*0Sstevel@tonic-gate {
36*0Sstevel@tonic-gate kthread_t thread, *tp = &thread;
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate if (wsp->walk_addr == NULL) {
39*0Sstevel@tonic-gate mdb_warn("must specify thread for ctxop walk\n");
40*0Sstevel@tonic-gate return (WALK_ERR);
41*0Sstevel@tonic-gate }
42*0Sstevel@tonic-gate if (mdb_vread(tp, sizeof (*tp), wsp->walk_addr) == -1) {
43*0Sstevel@tonic-gate mdb_warn("failed to read thread at %p", wsp->walk_addr);
44*0Sstevel@tonic-gate return (WALK_ERR);
45*0Sstevel@tonic-gate }
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate wsp->walk_data = mdb_alloc(sizeof (ctxop_t), UM_SLEEP);
48*0Sstevel@tonic-gate wsp->walk_addr = (uintptr_t)tp->t_ctx;
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate return (WALK_NEXT);
51*0Sstevel@tonic-gate }
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate int
ctxop_walk_step(mdb_walk_state_t * wsp)54*0Sstevel@tonic-gate ctxop_walk_step(mdb_walk_state_t *wsp)
55*0Sstevel@tonic-gate {
56*0Sstevel@tonic-gate int status;
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate if (wsp->walk_addr == NULL)
59*0Sstevel@tonic-gate return (WALK_DONE);
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate if (mdb_vread(wsp->walk_data,
62*0Sstevel@tonic-gate sizeof (ctxop_t), wsp->walk_addr) == -1) {
63*0Sstevel@tonic-gate mdb_warn("failed to read ctxop at %p", wsp->walk_addr);
64*0Sstevel@tonic-gate return (WALK_DONE);
65*0Sstevel@tonic-gate }
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
68*0Sstevel@tonic-gate wsp->walk_cbdata);
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate wsp->walk_addr = (uintptr_t)(((ctxop_t *)wsp->walk_data)->next);
71*0Sstevel@tonic-gate return (status);
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate void
ctxop_walk_fini(mdb_walk_state_t * wsp)75*0Sstevel@tonic-gate ctxop_walk_fini(mdb_walk_state_t *wsp)
76*0Sstevel@tonic-gate {
77*0Sstevel@tonic-gate mdb_free(wsp->walk_data, sizeof (ctxop_t));
78*0Sstevel@tonic-gate }
79