htleent.cc

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/* 
 *      HT Editor
 *      htleent.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 "htnewexe.h"
#include "htle.h"
#include "htlehead.h"
#include "httag.h"
#include "formats.h"
#include "snprintf.h"

#include "lestruct.h"

/* entry bundle */

static ht_tag_flags_s le_entry_bundle_flags[] =
{
        {-1, "LE - entrypoint bundle flags"},
        {0,  "[00] valid"},
        {1,  "[01] 32bit (16bit otherwise)"},
        {0, 0}
};

static ht_mask_ptable le_entry_bundle_header[]=
{
        {"number of entries",   STATICTAG_EDIT_BYTE("00000000")},
        {"bundle flags",                STATICTAG_EDIT_BYTE("00000001")" "STATICTAG_FLAGS("00000001", ATOM_LE_ENTRY_BUNDLE_FLAGS_STR)},
        {"object index",                STATICTAG_EDIT_WORD_LE("00000002")},
        {0,0}
};

/* entry */

static ht_tag_flags_s le_entry_flags[] =
{
        {-1, "LE - entrypoint flags"},
        {0,  "[00] exported"},
        {1,  "[01] uses shared segment"},
        {0, 0}
};

static ht_mask_ptable le_entry16[]=
{
        {"flags",               STATICTAG_EDIT_BYTE("00000000")" "STATICTAG_FLAGS("00000000", ATOM_LE_ENTRY_FLAGS_STR)},
        {"offset",      STATICTAG_EDIT_WORD_LE("00000001")},
        {0, 0}
};

static ht_mask_ptable le_entry32[]=
{
        {"flags",               STATICTAG_EDIT_BYTE("00000000")" "STATICTAG_FLAGS("00000000", ATOM_LE_ENTRY_FLAGS_STR)},
        {"offset",      STATICTAG_EDIT_DWORD_LE("00000001")},
        {0, 0}
};

static ht_view *htleentrypoints_init(bounds *b, ht_streamfile *file, ht_format_group *group)
{
        ht_le_shared_data *le_shared=(ht_le_shared_data *)group->get_shared_data();

        int h=le_shared->hdr_ofs;
        ht_uformat_viewer *v=new ht_uformat_viewer();
        v->init(b, DESC_LE_ENTRYPOINTS, VC_EDIT | VC_SEARCH, file, group);
        ht_mask_sub *m=new ht_mask_sub();
        m->init(file, 0);
        register_atom(ATOM_LE_ENTRY_FLAGS, le_entry_flags);
        register_atom(ATOM_LE_ENTRY_BUNDLE_FLAGS, le_entry_bundle_flags);
        char info[128];
        
        ht_snprintf(info, sizeof info, "* LE entry header at offset %08x", h+le_shared->hdr.enttab);

/* FIXME: false */
        bool le_bigendian = false;
        m->add_mask(info);
        m->add_staticmask_ptable(le_entry_bundle_header, h+le_shared->hdr.enttab, le_bigendian);
        v->insertsub(m);

        FILEOFS o=h+le_shared->hdr.enttab;
        while (1) {
                char t[32];
                LE_ENTRYPOINT_BUNDLE hdr;
                hdr.entry_count=0;
                file->seek(o);
                o+=file->read(&hdr, sizeof hdr);
                if (!hdr.entry_count) break;
                char *flags_str;
                if (hdr.flags & LE_ENTRYPOINT_BUNDLE_32BIT) {
                        flags_str="32-bit";
                } else {
                        flags_str="16-bit";
                }
                for (int i=0; i<hdr.entry_count; i++) {
                        m=new ht_mask_sub();
                        m->init(file, i);
                        if (hdr.flags & LE_ENTRYPOINT_BUNDLE_32BIT) {
                                m->add_staticmask_ptable(le_entry32, o, le_bigendian);
                                o+=1+4;
                        } else {
                                m->add_staticmask_ptable(le_entry16, o, le_bigendian);
                                o+=1+2;
                        }
                        ht_snprintf(t, sizeof t, "--- entry %d (%s) ---", i+1, flags_str);

                        ht_collapsable_sub *cs=new ht_collapsable_sub();
                        cs->init(file, m, 1, t, 1);
                        v->insertsub(cs);
                }
        }
        
        return v;
}

format_viewer_if htleentrypoints_if = {
        htleentrypoints_init,
        0
};

---