/*
 * 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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include        <stdio.h>
#include        "_debug.h"
#include        "msg.h"
#include        "libld.h"


static int
Dbg_got_compare(Gottable *gtp1, Gottable *gtp2)
{
        Gotndx  *gnp1 = &gtp1->gt_gndx;
        Gotndx  *gnp2 = &gtp2->gt_gndx;

        if (gnp1->gn_gotndx > gnp2->gn_gotndx)
                return (1);
        if (gnp1->gn_gotndx < gnp2->gn_gotndx)
                return (-1);

        return (0);
}

void
Dbg_got_display(Ofl_desc *ofl, Off goff, int stage,
    Word m_got_xnumber, size_t m_got_entsize)
{
        Lm_list         *lml = ofl->ofl_lml;
        Gottable        *gtp = ofl->ofl_gottable;
        Word            gotndx;
        Xword           *gptr;

        if (DBG_NOTCLASS(DBG_C_GOT))
                return;

        if (ofl->ofl_gotcnt == m_got_xnumber)
                return;

        Dbg_util_nl(lml, DBG_NL_STD);
        dbg_print(lml, MSG_INTL(MSG_GOT_INFO), EC_WORD(ofl->ofl_gotcnt));

        if (DBG_NOTDETAIL())
                return;

        qsort((char *)gtp, ofl->ofl_gotcnt, sizeof (Gottable),
            (int(*)(const void *, const void *))Dbg_got_compare);

        if (stage == 0)
                dbg_print(lml, MSG_INTL(MSG_GOT_COLUMNS1));
        else
                dbg_print(lml, MSG_INTL(MSG_GOT_COLUMNS2));

        gptr = (Xword *)ofl->ofl_osgot->os_outdata->d_buf;

        for (gotndx = 0; gotndx < ofl->ofl_gotcnt; gotndx++, gtp++, gptr++) {
                Sym_desc        *sdp = gtp->gt_sym;
                const char      *refstr, *name;
                Gotndx          *gnp = &gtp->gt_gndx;
                Lword           gotaddval;
                Off             off = goff + (gotndx * m_got_entsize);
                char            index[INDEX_STR_SIZE];

                (void) snprintf(index, INDEX_STR_SIZE, MSG_ORIG(MSG_GOT_INDEX),
                    EC_SWORD(gnp->gn_gotndx));

                if (sdp == 0)
                        refstr = MSG_ORIG(MSG_STR_EMPTY);
                else if (sdp->sd_flags & FLG_SY_SMGOT)
                        refstr = MSG_ORIG(MSG_GOT_SMALL_PIC);
                else
                        refstr = MSG_ORIG(MSG_GOT_BIG_PIC);

                if (sdp == 0)
                        name = MSG_ORIG(MSG_STR_EMPTY);
                else if (sdp->sd_name)
                        name = Dbg_demangle_name(sdp->sd_name);
                else
                        name = MSG_INTL(MSG_STR_UNKNOWN);

                if (stage == 0)
                        gotaddval = gnp->gn_addend;
                else
                        gotaddval = *gptr;

                if ((sdp == 0) || (sdp->sd_sym->st_shndx == SHN_UNDEF) ||
                    (sdp->sd_file == 0)) {
                        dbg_print(lml, MSG_INTL(MSG_GOT_FORMAT1), index,
                            refstr, EC_OFF(off), EC_XWORD(gotaddval), name);
                } else {
                        dbg_print(lml, MSG_INTL(MSG_GOT_FORMAT2), index,
                            refstr, EC_OFF(off), EC_XWORD(gotaddval),
                            sdp->sd_file->ifl_name, name);
                }
        }
}

void
Elf_got_title(Lm_list *lml)
{
        dbg_print(lml, MSG_INTL(MSG_GOT_TITLE));
}

void
Elf_got_entry(Lm_list *lml, Sword ndx, Addr addr, Xword value, Half mach,
    uchar_t ei_target_data, uchar_t ei_host_data, Word type, void *reloc,
    const char *name)
{
        Rela            *rela;
        Rel             *rel;
        const char      *str;
        Conv_inv_buf_t  inv_buf;
        char            index[INDEX_STR_SIZE];

        (void) snprintf(index, INDEX_STR_SIZE, MSG_ORIG(MSG_GOT_INDEX),
            EC_SWORD(ndx));

        /*
         * Got sections are SHT_PROGBITS, and are therefore not xlated by
         * libelf. If the target system has a different byte order than
         * the system displaying the data, swap the bytes so they are
         * presented properly.
         */
        if (ei_target_data != ei_host_data)
                value = BSWAP_XWORD(value);

        if (reloc) {
                if (type == SHT_RELA) {
                        rela = (Rela *)reloc;
                        str = conv_reloc_type(mach,
                            ELF_R_TYPE(rela->r_info, mach), 0, &inv_buf);
                } else {
                        rel = (Rel *)reloc;
                        str = conv_reloc_type(mach,
                            ELF_R_TYPE(rel->r_info, mach), 0, &inv_buf);
                }

                if (name)
                        name = Elf_demangle_name(name);
                else
                        name = MSG_ORIG(MSG_STR_EMPTY);

                dbg_print(lml, MSG_INTL(MSG_GOT_ENTRY_RE), index, EC_ADDR(addr),
                    EC_XWORD(value), str, name);
        } else
                dbg_print(lml, MSG_INTL(MSG_GOT_ENTRY_NR), index, EC_ADDR(addr),
                    EC_XWORD(value));
}