/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2000 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/mdb_modapi.h>
#include <sys/thread.h>
#include "ctxop.h"
int
ctxop_walk_init(mdb_walk_state_t *wsp)
{
kthread_t thread, *tp = &thread;
if (wsp->walk_addr == NULL) {
mdb_warn("must specify thread for ctxop walk\n");
return (WALK_ERR);
}
if (mdb_vread(tp, sizeof (*tp), wsp->walk_addr) == -1) {
mdb_warn("failed to read thread at %p", wsp->walk_addr);
return (WALK_ERR);
}
wsp->walk_data = mdb_alloc(sizeof (ctxop_t), UM_SLEEP);
wsp->walk_addr = (uintptr_t)tp->t_ctx;
return (WALK_NEXT);
}
int
ctxop_walk_step(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data,
sizeof (ctxop_t), wsp->walk_addr) == -1) {
mdb_warn("failed to read ctxop at %p", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr = (uintptr_t)(((ctxop_t *)wsp->walk_data)->next);
return (status);
}
void
ctxop_walk_fini(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (ctxop_t));
}