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remove unused elfinfo/*

Browse Source 
elfinfo was what ElfReader started from, but is not needed in itself
anymore.  The code has been mostly rewritten, so an explicit mention
of the original authors is not necessary anymore.

Change-Id: Iea48c80f9174504bbb56cc02ee2de5eda4a81489
This commit is contained in:
Horst Schirmeier
2018-07-16 12:56:02 +02:00
parent 9bd58cb294
commit dd1b18e580
7 changed files with 0 additions and 3243 deletions
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2
src/core/util/elfinfo/AUTHORS
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@ -1,2 +0,0 @@
Ashok Shankar Das <ashok.s.das@gmail.com>

340
src/core/util/elfinfo/COPYING
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@ -1,340 +0,0 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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12
src/core/util/elfinfo/ChangeLog
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@ -1,12 +0,0 @@
elfinfo 1.2
-added code to display prog headers
elfinfo 1.1
-modified display informations for sections and symbols
elfinfo 1.0
-initial release
elfinfo 0.2
-test release
elfinfo 0.1
-test release

11
src/core/util/elfinfo/README
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@ -1,11 +0,0 @@
-=|elfinfo|=-
This Tool is essentially a ELF file parser, similar to eu-readelf, but have
a subset of functionality. This doesn't need libelf.
How to
======
1) run make to compile
2) run make install to install(su user)
3) at command line type elfinfo , it shows you a usage message

427
src/core/util/elfinfo/elfinfo.cc
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@ -1,427 +0,0 @@
/* DISCLAIMER :This is a FREE SOFTWARE You can Use it at your own RISK
that is if you are screwed by using this software, then
accept the fact that you screwed yourself.
## THIS HAS BEEN DEVELOPED AND TESTED UNDER FEDORA-9 HOPEFULLY IT WILL
## WORK ON OTHER SYSTEMS
======================================================================
elfinfo.c - Copyright (C)2008 Ashok Shankar Das ashok.s.das@gmail.com
This code is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This code 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <elf.h>
static void Elf32to64_Ehdr(Elf32_Ehdr const *src, Elf64_Ehdr *dest)
{
memcpy(dest->e_ident, src->e_ident, sizeof(dest->e_ident));
dest->e_type = src->e_type;
dest->e_machine = src->e_machine;
dest->e_version = src->e_version;
dest->e_entry = src->e_entry;
dest->e_phoff = src->e_phoff;
dest->e_shoff = src->e_shoff;
dest->e_flags = src->e_flags;
dest->e_ehsize = src->e_ehsize;
dest->e_phentsize = src->e_phentsize;
dest->e_phnum = src->e_phnum;
dest->e_shentsize = src->e_shentsize;
dest->e_shnum = src->e_shnum;
dest->e_shstrndx = src->e_shstrndx;
}
bool read_ELF_file_header(FILE *fp, Elf64_Ehdr *filehdr, int *elfclass)
{
Elf32_Ehdr filehdr32;
size_t ret;
rewind(fp);
ret = fread(&filehdr32, sizeof(filehdr32), 1, fp);
if (ret != 1 ||
strncmp((const char *)filehdr32.e_ident, "\177ELF", 4) != 0) {
return false;
}
*elfclass = filehdr32.e_ident[EI_CLASS];
if (*elfclass == ELFCLASS32) {
Elf32to64_Ehdr(&filehdr32, filehdr);
} else if (*elfclass == ELFCLASS64) {
rewind(fp);
ret = fread(filehdr, sizeof(*filehdr), 1, fp);
if (ret != 1) {
return false;
}
} else {
return false;
}
return true;
}
static void Elf32to64_Shdr(Elf32_Shdr const *src, Elf64_Shdr *dest)
{
dest->sh_name = src->sh_name;
dest->sh_type = src->sh_type;
dest->sh_flags = src->sh_flags;
dest->sh_addr = src->sh_addr;
dest->sh_offset = src->sh_offset;
dest->sh_size = src->sh_size;
dest->sh_link = src->sh_link;
dest->sh_info = src->sh_info;
dest->sh_addralign = src->sh_addralign;
dest->sh_entsize = src->sh_entsize;
}
bool read_ELF_section_header(FILE *fp, Elf64_Ehdr const *filehdr, int elfclass, int section, Elf64_Shdr *sect_hdr)
{
int numsect = filehdr->e_shnum;
off_t sect_hdr_off;
Elf32_Shdr sect_hdr32;
if (numsect < section || section < 0) {
return false;
}
sect_hdr_off = filehdr->e_shoff;
sect_hdr_off += filehdr->e_shentsize * section;
fseek(fp, (off_t) sect_hdr_off, SEEK_SET);
if (elfclass == ELFCLASS32) {
int ret = fread(&sect_hdr32, sizeof(sect_hdr32), 1, fp);
if (ret != 1) {
return false;
}
Elf32to64_Shdr(&sect_hdr32, sect_hdr);
} else if (elfclass == ELFCLASS64) {
int ret = fread(sect_hdr, sizeof(*sect_hdr), 1, fp);
if (ret != 1) {
return false;
}
} else {
return false;
}
return true;
}
#ifdef TESTPROGRAM
void process_sect_hdr(Elf64_Shdr const *sect_hdr, char const *sect_name_buff)
{
int idx;
idx = sect_hdr->sh_name;
printf(" %-20s (0x%lx++0x%lx) ", sect_name_buff + idx, sect_hdr->sh_addr, sect_hdr->sh_size);
if (sect_hdr->sh_entsize) {
printf(" %c ",'*');
} else {
printf(" %c ",' ');
}
switch (sect_hdr->sh_type) {
case 0: printf("NULL \t");
break;
case 1: printf("PROGBITS \t");
break;
case 2: printf("SYMTAB \t");
break;
case 3: printf("STRTAB \t");
break;
case 4: printf("RELOC ADN \t");
break;
case 5: printf("HASH \t");
break;
case 6: printf("SYMTAB \t");
break;
case 7: printf("NOTE \t");
break;
case 8: printf("NOBIT \t");
break;
case 9: printf("RELOC \t");
break;
case 10: printf("*reserved* \t");
break;
case 11: printf("DYNSYM \t");
break;
case 14: printf("INITARR \t");
break;
case 15: printf("FINIARR \t");
break;
case 16: printf("PREINIT \t");
break;
case 17: printf("SECTGRP \t");
break;
case 18: printf("EXT-SHNDX \t");
break;
case 19: printf("NUM-DEF-TYP \t");
break;
case 0x60000000: printf("OS SPECIFIC \t");
break;
case 0x6ffffff5: printf("GNU_ATTR \t");
break;
case 0x6ffffff6: printf("GNU_HASH \t");
break;
case 0x6ffffff7: printf("PRELNKLIBLST \t");
break;
case 0x6ffffff8: printf("CKSUM \t");
break;
case 0x6ffffffa: printf("SUN SPECIFIC \t");
break;
case 0x6ffffffb: printf("SUNCOMDAT \t");
break;
case 0x6ffffffc: printf("SUNSYMINFO \t");
break;
case 0x6ffffffd: printf("GNUVERDEF \t");
break;
case 0x6ffffffe: printf("GNUVERNEED \t");
break;
case 0x6fffffff: printf("GNUVERSYM \t");
break;
case 0x70000000: printf("LOPROC \t");
break;
case 0x7fffffff: printf("HIPROC \t");
break;
case 0x80000000: printf("APP beg \t");
break;
case 0x8fffffff: printf("APP end \t");
break;
}
printf("linked to %3d sect\n", sect_hdr->sh_link);
}
void display_sections(FILE *fp)
{
Elf64_Ehdr ehdr;
Elf64_Shdr sec_hdr;
int num_hdrs, elfclass;
char *buff = NULL;
if (!read_ELF_file_header(fp, &ehdr, &elfclass)) {
printf("Not an ELF file\n");
exit(0);
}
num_hdrs = ehdr.e_shnum;
if (!read_ELF_section_header(fp, &ehdr, elfclass, ehdr.e_shstrndx, &sec_hdr)) {
printf("Error: reading section string table sect_num= %d\n", ehdr.e_shstrndx);
exit(0);
}
//we read the shstrtab
// read content from the file
buff = (char *)malloc(sec_hdr.sh_size);
if (!buff) {
printf("Malloc failed to allocate buffer for shstrtab\n");
exit(0);
}
//seek to the offset in the file,
fseek(fp, (off_t)sec_hdr.sh_offset, SEEK_SET);
if (fread(buff, sec_hdr.sh_size, 1, fp) != 1) {
printf("Couldn't read complete shstrtab\n");
exit(0);
}
printf("There are [%d] sections\n",num_hdrs);
for (int i = 0; i < num_hdrs; ++i) {
if (!read_ELF_section_header(fp, &ehdr, elfclass, i, &sec_hdr)) {
printf("Wrong Section to read\n");
} else {
printf("[section %3d] ", i);
process_sect_hdr(&sec_hdr, buff);
}
}
free(buff);
}
static void Elf32to64_Sym(Elf32_Sym const *src, Elf64_Sym *dest)
{
dest->st_name = src->st_name;
dest->st_value = src->st_value;
dest->st_size = src->st_size;
dest->st_info = src->st_info;
dest->st_other = src->st_other;
dest->st_shndx = src->st_shndx;
}
int process_symtab(FILE *fp, Elf64_Ehdr *ehdr, int elfclass, int sect_num)
{
Elf64_Shdr sect_hdr;
Elf32_Sym mysym32;
Elf64_Sym mysym;
char *name_buf = NULL;
int num_sym, link, idx;
off_t sym_data_offset;
int sym_data_size;
if (!read_ELF_section_header(fp, ehdr, elfclass, sect_num, &sect_hdr)) {
return -1;
}
//we have to check to which strtab it is linked
link = sect_hdr.sh_link;
sym_data_offset = sect_hdr.sh_offset;
sym_data_size = sect_hdr.sh_size;
num_sym = sym_data_size /
(elfclass == ELFCLASS32 ? sizeof(Elf32_Sym) : sizeof(Elf64_Sym));
//read the coresponding strtab
if (!read_ELF_section_header(fp, ehdr, elfclass, link, &sect_hdr)) {
return -1;
}
//get the size of strtab in file and allocate a buffer
name_buf = (char *) malloc(sect_hdr.sh_size);
if (!name_buf) {
return -1;
}
//get the offset of strtab in file and seek to it
fseek(fp, sect_hdr.sh_offset, SEEK_SET);
//read all data from the section to the buffer.
if (fread(name_buf, sect_hdr.sh_size, 1, fp) != 1) {
return -1;
}
//so we have the namebuf now seek to symtab data
fseek(fp, sym_data_offset, SEEK_SET);
printf("[%d] symbols\n", num_sym);
for (int i = 0; i < num_sym; ++i) {
if (elfclass == ELFCLASS32) {
if (fread(&mysym32, sizeof(mysym32), 1, fp) != 1) {
return -1;
}
Elf32to64_Sym(&mysym32, &mysym);
} else if (elfclass == ELFCLASS64) {
if (fread(&mysym, sizeof(mysym), 1, fp) != 1) {
return -1;
}
}
idx = mysym.st_name;
//printf("symbol %d index in strtab %d\n",i,idx);
printf("[%3d] %s ", i, name_buf + idx);
int binding = elfclass == ELFCLASS32 ?
ELF32_ST_BIND(mysym.st_info) :
ELF64_ST_BIND(mysym.st_info);
switch (binding) {
case 0: printf(" LOCAL ");
break;
case 1: printf(" GLOBAL ");
break;
case 2: printf(" WEAK ");
break;
case 3: printf(" NUM ");
break;
case 10: printf(" OS-specific-start ");
break;
case 12: printf(" OS-specific-end ");
break;
case 13: printf(" CPU-specific-start ");
break;
case 15: printf("CPU-specific-end ");
break;
}
int type = elfclass == ELFCLASS32 ?
ELF32_ST_TYPE(mysym.st_info) :
ELF64_ST_TYPE(mysym.st_info);
switch (type) {
case 0: printf(" NOTYPE ");
break;
case 1: printf(" OBJECT ");
break;
case 2: printf(" FUNC ");
break;
case 3: printf(" SECTION ");
break;
case 4: printf(" FILE ");
break;
case 5: printf(" COMMON ");
break;
case 6: printf(" TLS ");
break;
case 7: printf(" NUM ");
break;
case 10: printf(" OS-specific-start ");
break;
break;
case 12: printf(" OS-specific-end ");
break;
case 13: printf(" CPU-specific-start ");
break;
break;
case 15: printf(" CPU-specific-end ");
break;
}
switch (mysym.st_shndx) {
case SHN_UNDEF: printf(" UNDEF ");
break;
case SHN_LOPROC: printf(" CPU-specific-start ");
break;
case SHN_HIPROC: printf(" CPU-specific-end ");
break;
case SHN_LOOS: printf(" OS-specific-start ");
break;
case SHN_HIOS: printf(" OS-specific-end ");
break;
case SHN_ABS: printf(" ABSOLUTE ");
break;
case SHN_COMMON: printf(" COMMON ");
break;
case SHN_XINDEX: printf(" XINDEX ");
break;
}
printf("\n");
}
free(name_buf);
return 0;
}
void dump_symbols(FILE *fp)
{
Elf64_Ehdr ehdr;
Elf64_Shdr sec_hdr;
int num_hdrs, elfclass;
if (!read_ELF_file_header(fp, &ehdr, &elfclass)) {
printf("Not an ELF file\n");
exit(0);
}
num_hdrs = ehdr.e_shnum;
for (int i = 0; i < num_hdrs; ++i) {
if (!read_ELF_section_header(fp, &ehdr, elfclass, i, &sec_hdr)) {
printf("Wrong Section to read\n");
} else if (sec_hdr.sh_type != SHT_SYMTAB && sec_hdr.sh_type != SHT_DYNSYM) {
continue;
}
printf("\n[section %3d] contains ", i);
process_symtab(fp, &ehdr, elfclass, i);
}
}
int main(int argc, char const * const *argv)
{
FILE *fp;
if (--argc != 1) {
printf("usage: %s elf-binary\n", argv[0]);
return 1;
}
fp = fopen(argv[1], "rb");
if (!fp) {
perror("cannot open file");
return 1;
}
dump_symbols(fp);
return 0;
}
#endif

24
src/core/util/elfinfo/elfinfo.h
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@ -1,24 +0,0 @@
/**
* ELF Helper
* \author Martin Hoffmann <hoffmann@cs.fau.de>
*/
#ifndef ELFINFO_H
#define ELFINFO_H
#if !defined(__APPLE__)
#include <elf.h>
#else
#include "mac-elf.h" /* Mac OS X doesn't distribute elf.h... */
#endif
#include <stdio.h>
// ELFinfo
// Returns true if it finds a valid ELF header. Stores ELFCLASS32 or 64 in elfclass.
bool read_ELF_file_header(FILE *fp, Elf64_Ehdr *filehdr, int *elfclass);
// Returns true if it finds a valid ELF section header.
bool read_ELF_section_header(FILE *fp, Elf64_Ehdr const *filehdr, int elfclass, int sect_num, Elf64_Shdr *sect_hdr);
void display_sections(FILE *fp);
#endif // ELFINFO_H

2427
src/core/util/elfinfo/mac-elf.h
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