htelfphs.cc

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/* 
 *      HT Editor
 *      htelfphs.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 "elfstruc.h"
#include "htatom.h"
#include "htelf.h"
#include "htelfphs.h"
#include "httag.h"
#include "formats.h"
#include "snprintf.h"

static ht_mask_ptable elfprogramheader32[]=
{
        {"type",                STATICTAG_EDIT_DWORD_VE("00000000")" ("STATICTAG_DESC_DWORD_VE("00000000", ATOM_ELF_PH_TYPE_STR)")"},
        {"offset",              STATICTAG_EDIT_DWORD_VE("00000004")},
        {"virtual address",     STATICTAG_EDIT_DWORD_VE("00000008")},
        {"physical address",    STATICTAG_EDIT_DWORD_VE("0000000c")},
        {"in file size",        STATICTAG_EDIT_DWORD_VE("00000010")},
        {"in memory size",      STATICTAG_EDIT_DWORD_VE("00000014")},
        {"flags",               STATICTAG_EDIT_DWORD_VE("00000018")" "STATICTAG_FLAGS("00000018", ATOM_ELF_PH_FLAGS_STR)},
        {"alignment",           STATICTAG_EDIT_DWORD_VE("0000001c")},
        {0, 0}
};

static ht_mask_ptable elfprogramheader64[]=
{
        {"type",                STATICTAG_EDIT_DWORD_VE("00000000")" ("STATICTAG_DESC_DWORD_VE("00000000", ATOM_ELF_PH_TYPE_STR)")"},
        {"flags",               STATICTAG_EDIT_DWORD_VE("00000004")" "STATICTAG_FLAGS("00000004", ATOM_ELF_PH_FLAGS_STR)},
        {"offset",              STATICTAG_EDIT_QWORD_VE("00000008")},
        {"virtual address",     STATICTAG_EDIT_QWORD_VE("00000010")},
        {"physical address",    STATICTAG_EDIT_QWORD_VE("00000018")},
        {"in file size",        STATICTAG_EDIT_QWORD_VE("00000020")},
        {"in memory size",      STATICTAG_EDIT_QWORD_VE("00000028")},
        {"alignment",           STATICTAG_EDIT_QWORD_VE("00000030")},
        {0, 0}
};

static int_hash elf_ph_type[] =
{
        {ELF_PT_NULL,           "null"},
        {ELF_PT_LOAD,           "load"},
        {ELF_PT_DYNAMIC,        "dynamic"},
        {ELF_PT_INTERP,         "interp"},
        {ELF_PT_NOTE,           "note"},
        {ELF_PT_SHLIB,          "shlib"},
        {ELF_PT_PHDR,           "phdr"},
        {0, 0}
};

static ht_tag_flags_s elf_ph_flags[] =
{
        {0,  "[00] executable"},
        {1,  "[01] writable"},
        {2,  "[02] readable"},
        {0, 0}
};

static ht_view *htelfprogramheaders_init(bounds *b, ht_streamfile *file, ht_format_group *group)
{
        ht_elf_shared_data *elf_shared=(ht_elf_shared_data *)group->get_shared_data();

        bool elf_bigendian = (elf_shared->ident.e_ident[ELF_EI_DATA] == ELFDATA2MSB);
        ht_uformat_viewer *v = NULL;
        if (elf_shared->ident.e_ident[ELF_EI_CLASS]==ELFCLASS32) {
                v = new ht_uformat_viewer();
                v->init(b, DESC_ELF_PROGRAM_HEADERS, VC_EDIT, file, group);
        
                register_atom(ATOM_ELF_PH_TYPE, elf_ph_type);
                register_atom(ATOM_ELF_PH_FLAGS, elf_ph_flags);
        
                FILEOFS h=elf_shared->header32.e_phoff;
        
                ht_mask_sub *m=new ht_mask_sub();
                m->init(file, 0);
        
                char info[128];
                ht_snprintf(info, sizeof info, "* ELF program headers at offset %08x", h);
        
                m->add_mask(info);

                v->insertsub(m);
                for (UINT i=0; i<elf_shared->pheaders.count; i++) {
                
                        ht_mask_sub *n=new ht_mask_sub();
                        n->init(file, i);
                
                        char t[32];
                        char *etype=matchhash(elf_shared->pheaders.pheaders32[i].p_type, elf_ph_type);
                        if (!etype) etype="?";
                        ht_snprintf(t, sizeof t, "entry %d (%s)", i, etype);
                
                        n->add_staticmask_ptable(elfprogramheader32, h+i*elf_shared->header32.e_phentsize, elf_bigendian);
                
                        ht_collapsable_sub *cn=new ht_collapsable_sub();
                        cn->init(file, n, 1, t, 1);
        
                        v->insertsub(cn);
                }
        } else if (elf_shared->ident.e_ident[ELF_EI_CLASS]==ELFCLASS64) {
                v = new ht_uformat_viewer();
                v->init(b, DESC_ELF_PROGRAM_HEADERS, VC_EDIT, file, group);
        
                register_atom(ATOM_ELF_PH_TYPE, elf_ph_type);
                register_atom(ATOM_ELF_PH_FLAGS, elf_ph_flags);

/* FIXME: 64-bit */
                FILEOFS h=elf_shared->header64.e_phoff.lo;
        
                ht_mask_sub *m=new ht_mask_sub();
                m->init(file, 0);
        
                char info[128];
                ht_snprintf(info, sizeof info, "* ELF program headers at offset %08x", h);
        
                m->add_mask(info);

                v->insertsub(m);
                for (UINT i=0; i<elf_shared->pheaders.count; i++) {
                
                        ht_mask_sub *n=new ht_mask_sub();
                        n->init(file, i);
                
                        char t[32];
                        char *etype=matchhash(elf_shared->pheaders.pheaders64[i].p_type, elf_ph_type);
                        if (!etype) etype="?";
                        ht_snprintf(t, sizeof t, "entry %d (%s)", i, etype);
                
                        n->add_staticmask_ptable(elfprogramheader64, h+i*elf_shared->header64.e_phentsize, elf_bigendian);
                
                        ht_collapsable_sub *cn=new ht_collapsable_sub();
                        cn->init(file, n, 1, t, 1);
        
                        v->insertsub(cn);
                }
        }
        
        return v;
}

format_viewer_if htelfprogramheaders_if = {
        htelfprogramheaders_init,
        0
};

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