htneobj.cc

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/* 
 *      HT Editor
 *      htneobj.cc
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "htatom.h"
#include "htendian.h"
#include "htnewexe.h"
#include "htne.h"
#include "htneobj.h"
#include "httag.h"
#include "htstring.h"
#include "formats.h"
#include "snprintf.h"

#include "nestruct.h"

#include <stdlib.h>
#include <string.h>

static ht_mask_ptable neobj[]=
{
        {"offset",      STATICTAG_EDIT_WORD_LE("00000000")},
        {"size",        STATICTAG_EDIT_WORD_LE("00000002")},
        {"flags",       STATICTAG_EDIT_WORD_LE("00000004")" "STATICTAG_FLAGS("00000004", ATOM_NE_SEGFLAGS_STR)},
        {"minalloc",    STATICTAG_EDIT_WORD_LE("00000006")},
        {0, 0}
};

static ht_tag_flags_s ne_segflags[] =
{
        {0,  "[00] data"},
        {1,  "[01] reserved"},
        {2,  "[02] reserved"},
        {3,  "[03] iterated"},
        {4,  "[04] movable"},
        {5,  "[05] sharable"},
        {6,  "[06] preload"},
        {7,  "[07] read only"},
        {8,  "[08] relocations"},
        {9,  "[09] conforming"},
        {10, "[10] pl0"},
        {11, "[11] pl1"},
        {12, "[12] discardable"},
        {13, "[13] 32bit"},
        {14, "[14] huge"},
        {15, "[15] reserved"},
        {0, 0}
};

static ht_view *htnesegments_init(bounds *b, ht_streamfile *file, ht_format_group *group)
{
        ht_ne_shared_data *ne_shared=(ht_ne_shared_data *)group->get_shared_data();

        dword h=ne_shared->hdr_ofs;
        ht_uformat_viewer *v=new ht_uformat_viewer();
        v->init(b, DESC_NE_SEGMENTS, VC_EDIT | VC_SEARCH, file, group);
        ht_mask_sub *m=new ht_mask_sub();
        m->init(file, 0);

        register_atom(ATOM_NE_SEGFLAGS, ne_segflags);

        char t[64];

        ht_snprintf(t, sizeof t, "* NE segment table at offset %08x", h+ne_shared->hdr.segtab);
        m->add_mask(t);
        m->add_mask("note: 0 means 65536 for segment size and minalloc");

        file->seek(h+ne_shared->hdr.segtab);
        for (dword i=0; i<ne_shared->hdr.cseg; i++) {
                NE_SEGMENT s;
                file->read(&s, sizeof s);
                create_host_struct(&s, NE_SEGMENT_struct, little_endian);
                ht_snprintf(t, sizeof t, "--- segment %d (%s) ---", i+1, (s.flags & NE_DATA) ? "data" : "code");
                m->add_mask(t);
                m->add_staticmask_ptable(neobj, h+ne_shared->hdr.segtab+i*8, false);
        }
        v->insertsub(m);

        return v;
}

format_viewer_if htnesegments_if = {
        htnesegments_init,
        0
};

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