kmdb/kctl/kctl_auxv.c

	kctl_auxv.c revision ae115bc77f6fcde83175c75b4206dc2e50747966
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <kmdb/kctl/kctl.h>

#include <sys/modctl.h>
#include <sys/bootconf.h>
#include <sys/kobj.h>
#include <sys/kobj_impl.h>
#include <sys/kmdb.h>

static uintptr_t
kctl_lookup_by_name(char *modname, char *symname)
{
    struct modctl *mctl;
    Sym *ksym;
    uintptr_t addr;

    if ((mctl = mod_hold_by_name(modname)) == NULL)
        return (0);
    if ((ksym = kobj_lookup_all(mctl->mod_mp, symname, 1)) == NULL) {
        mod_release_mod(mctl);
        return (0);
    }

    addr = ksym->st_value;

    mod_release_mod(mctl);

    return (addr);
}

static uintptr_t
kctl_boot_lookup_by_name(char *modname, char *symname)
{
    struct modctl *mctl;
    Sym *ksym;

    if ((mctl = kobj_boot_mod_lookup(modname)) == NULL)
        return (0);

    if ((ksym = kobj_lookup_all(mctl->mod_mp, symname, 1)) == NULL)
        return (0);

    return (ksym->st_value);
}

void
kctl_auxv_init(kmdb_auxv_t *kav, const char *cfg, const char **argv, void *romp)
{
    bzero(kav, sizeof (kmdb_auxv_t));
    kav->kav_dseg = kctl.kctl_dseg;
    kav->kav_dseg_size = kctl.kctl_dseg_size;
    kav->kav_pagesize = PAGESIZE;
    kav->kav_ncpu = NCPU;
    kav->kav_kdi = &kobj_kdi;
    kav->kav_wrintr_fire = kctl_wrintr_fire;

    kav->kav_config = cfg;
    kav->kav_argv = argv;
    kav->kav_modpath = kobj_module_path;

    kctl_dprintf("kctl_auxv_init: modpath '%s'", kav->kav_modpath);

    if (kctl.kctl_boot_loaded) {
        kav->kav_lookup_by_name = kctl_boot_lookup_by_name;
        kav->kav_flags |= KMDB_AUXV_FL_NOUNLOAD;
    } else
        kav->kav_lookup_by_name = kctl_lookup_by_name;

    if (kctl.kctl_flags & KMDB_F_TRAP_NOSWITCH)
        kav->kav_flags |= KMDB_AUXV_FL_NOTRPSWTCH;

    kctl_auxv_init_isadep(kav, romp); /* can modify anything in kav */
}

void
kctl_auxv_fini(kmdb_auxv_t *kav)
{
    kctl_auxv_fini_isadep(kav);
}