libconv/common/cap_machelf.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 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * String conversion routine for hardware capabilities types.
 */
#include    <strings.h>
#include    <stdio.h>
#include    <_machelf.h>
#include    <elfcap.h>
#include    "cap_msg.h"
#include    "_conv.h"

static int
conv_cap(Xword val, char *str, size_t len, Half mach,
    Conv_fmt_flags_t fmt_flags, elfcap_to_str_func_t *fptr)
{
    size_t  _len;
    int do_bkt = (fmt_flags & CONV_FMT_NOBKT) == 0;

    /*
     * Note that for the purposes of this routine, I consider
     * CONV_FMT_NOBKT to mean no brackets, or anything that
     * is placed outside of them. We also drop the hex version
     * of the flags that are put in front of the opening bracket.
     */
    if (do_bkt) {
        _len = sprintf(str, MSG_ORIG(MSG_GBL_OSQBRKT), EC_XWORD(val));

        len -= _len;
        str += _len;
    }

    if ((*fptr)(ELFCAP_STYLE_UC, val, str, len, ELFCAP_FMT_SNGSPACE,
        mach) != 0)
        return (0);

    if (do_bkt) {
        _len = strlen(str);
        if ((len - _len) >= MSG_GBL_CSQBRKT_SIZE) {
            str += _len;
            (void) strcpy(str, MSG_ORIG(MSG_GBL_CSQBRKT));
        }
    }
    return (1);
}

const char *
conv_cap_val_hw1(Xword val, Half mach, Conv_fmt_flags_t fmt_flags,
    Conv_cap_val_hw1_buf_t *cap_val_hw1_buf)
{
    if (val == 0)
        return (MSG_ORIG(MSG_GBL_ZERO));

    if (conv_cap(val, cap_val_hw1_buf->buf, sizeof (cap_val_hw1_buf->buf),
        mach, fmt_flags, elfcap_hw1_to_str) == 0)
        return (conv_invalid_val(&cap_val_hw1_buf->inv_buf, val, 0));
    return ((const char *)cap_val_hw1_buf->buf);
}

const char *
conv_cap_val_hw2(Xword val, Half mach, Conv_fmt_flags_t fmt_flags,
    Conv_cap_val_hw2_buf_t *cap_val_hw2_buf)
{
    if (val == 0)
        return (MSG_ORIG(MSG_GBL_ZERO));

    if (conv_cap(val, cap_val_hw2_buf->buf, sizeof (cap_val_hw2_buf->buf),
        mach, fmt_flags, elfcap_hw2_to_str) == 0)
        return (conv_invalid_val(&cap_val_hw2_buf->inv_buf, val, 0));
    return ((const char *)cap_val_hw2_buf->buf);
}

const char *
conv_cap_val_sf1(Xword val, Half mach, Conv_fmt_flags_t fmt_flags,
    Conv_cap_val_sf1_buf_t *cap_val_sf1_buf)
{
    if (val == 0)
        return (MSG_ORIG(MSG_GBL_ZERO));

    if (conv_cap(val, cap_val_sf1_buf->buf, sizeof (cap_val_sf1_buf->buf),
        mach, fmt_flags, elfcap_sf1_to_str) == 0)
        return (conv_invalid_val(&cap_val_sf1_buf->inv_buf, val, 0));
    return ((const char *)cap_val_sf1_buf->buf);
}

const char *
conv_cap_tag(Xword tag, Conv_fmt_flags_t fmt_flags, Conv_inv_buf_t *inv_buf)
{
#ifdef _ELF64
    /*
     * Valid tags all fit in 32-bits, so a value larger than that
     * is garbage. conv_map_ds() sees 32-bit values, so test for garbage
     * here before passing it on.
     *
     * Since there are no valid tags with a value > 32-bits, there
     * is no reason to expend effort decoding the low order bits.
     */
    if (tag & 0xffffffff00000000)
        return (conv_invalid_val(inv_buf, tag, fmt_flags));
#endif

    return (conv_map_ds(ELFOSABI_NONE, EM_NONE, tag,
        conv_cap_tag_strings(fmt_flags), fmt_flags, inv_buf));
}

const char *
conv_cap_val(Xword tag, Xword val, Half mach, Conv_fmt_flags_t fmt_flags,
    Conv_cap_val_buf_t *cap_val_buf)
{
    switch (tag) {
    case CA_SUNW_HW_1:
        return (conv_cap_val_hw1(val, mach, fmt_flags,
            &cap_val_buf->cap_val_hw1_buf));

    case CA_SUNW_SF_1:
        return (conv_cap_val_sf1(val, mach, fmt_flags,
            &cap_val_buf->cap_val_sf1_buf));

    case CA_SUNW_HW_2:
        return (conv_cap_val_hw2(val, mach, fmt_flags,
            &cap_val_buf->cap_val_hw2_buf));

    default:
        return (conv_invalid_val(&cap_val_buf->inv_buf, val, 0));
    }
}