common/kmdb/kmdb_conf.c

/*
 * 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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/isa_defs.h>
#include <sys/utsname.h>
#include <strings.h>

#include <kmdb/kmdb_dpi.h>
#include <kmdb/kmdb_kdi.h>
#include <mdb/mdb_err.h>
#include <mdb/mdb.h>

static const char _mdb_version[] = KMDB_VERSION;

const char *
mdb_conf_version(void)
{
    return (_mdb_version);
}

const char *
mdb_conf_isa(void)
{
#if defined(__sparc)
#if defined(__sparcv9)
    return ("sparcv9");
#else   /* __sparcv9 */
    return ("sparc");
#endif  /* __sparcv9 */
#elif defined(__amd64)
    return ("amd64");
#elif defined(__i386)
    return ("i386");
#else
#error  "unknown ISA"
#endif
}

/*
 * These functions are needed for path evaluation, and must be run prior to
 * target initialization.  The kmdb symbol resolution machinery hasn't been
 * initialized at this point, so we have to rely on the kernel to look up
 * utsname and platform for us.
 */

void
mdb_conf_uname(struct utsname *utsp)
{
    bzero(utsp, sizeof (struct utsname));

    if (kmdb_dpi_get_state(NULL) == DPI_STATE_INIT) {
        struct utsname *utsaddr;

        /*
         * The kernel is running during DPI initialization, so we'll ask
         * it to do the lookup.  Our own symbol resolution facilities
         * won't be available until after the debugger starts.
         */
        if ((utsaddr = (struct utsname *)kmdb_kdi_lookup_by_name("unix",
            "utsname")) == NULL) {
            warn("'utsname' symbol is missing from kernel\n");
            (void) strcpy(utsp->sysname, "unknown");
            return;
        }

        bcopy(utsaddr, utsp, sizeof (struct utsname));
    } else
        (void) mdb_tgt_uname(mdb.m_target, utsp);
}

const char *
mdb_conf_platform(void)
{
    if (kmdb_dpi_get_state(NULL) == DPI_STATE_INIT) {
        static char plat[SYS_NMLN];
        caddr_t plataddr;

        /*
         * The kernel is running during DPI initialization, so we'll ask
         * it to do the lookup.  Our own symbol resolution facilities
         * won't be available until after the debugger starts.
         */
        if ((plataddr = (caddr_t)kmdb_kdi_lookup_by_name("unix",
            "platform")) == NULL) {
            warn("conf: 'platform' symbol is missing from "
                "kernel\n");
            return ("unknown");
        }

        (void) strncpy(plat, plataddr, sizeof (plat));
        plat[sizeof (plat) - 1] = '\0';

        return (plat);
    } else
        return (mdb_tgt_platform(mdb.m_target));
}