/* A dynamic array of flags indicating for which sections a dump
has been requested via command line switches. */
-struct dump_data {
+struct dump_data
+{
dump_type * dump_sects;
unsigned int num_dump_sects;
};
static bfd_boolean do_arch = FALSE;
static bfd_boolean do_notes = FALSE;
static bfd_boolean do_archive_index = FALSE;
+static bfd_boolean check_all = FALSE;
static bfd_boolean is_32bit_elf = FALSE;
static bfd_boolean decompress_dumps = FALSE;
bfd_size_type dynamic_size;
size_t dynamic_nent;
Elf_Internal_Dyn * dynamic_section;
+ Elf_Internal_Shdr * dynamic_strtab_section;
char * dynamic_strings;
unsigned long dynamic_strings_length;
+ Elf_Internal_Shdr * dynamic_symtab_section;
unsigned long num_dynamic_syms;
Elf_Internal_Sym * dynamic_symbols;
bfd_vma version_info[16];
{"relocs", no_argument, 0, 'r'},
{"notes", no_argument, 0, 'n'},
{"dynamic", no_argument, 0, 'd'},
+ {"lint", no_argument, 0, 'L'},
+ {"enable-checks", no_argument, 0, 'L'},
{"arch-specific", no_argument, 0, 'A'},
{"version-info", no_argument, 0, 'V'},
{"use-dynamic", no_argument, 0, 'D'},
-e --headers Equivalent to: -h -l -S\n\
-s --syms Display the symbol table\n\
--symbols An alias for --syms\n\
- --dyn-syms Display the dynamic symbol table\n\
+ --dyn-syms Display the dynamic symbol table\n\
-n --notes Display the core notes (if present)\n\
-r --relocs Display the relocations (if present)\n\
-u --unwind Display the unwind info (if present)\n\
-A --arch-specific Display architecture specific information (if any)\n\
-c --archive-index Display the symbol/file index in an archive\n\
-D --use-dynamic Use the dynamic section info when displaying symbols\n\
+ -L --lint|--enable-checks Display warning messages for possible problems\n\
-x --hex-dump=<number|name>\n\
Dump the contents of section <number|name> as bytes\n\
-p --string-dump=<number|name>\n\
usage (stderr);
while ((c = getopt_long
- (argc, argv, "ADHINR:SVWacdeghi:lnp:rstuvw::x:z", options, NULL)) != EOF)
+ (argc, argv, "ADHILNR:SVWacdeghi:lnp:rstuvw::x:z", options, NULL)) != EOF)
{
switch (c)
{
case 'c':
do_archive_index = TRUE;
break;
+ case 'L':
+ do_checks = TRUE;
+ break;
case 'x':
request_dump (dumpdata, HEX_DUMP);
break;
&& !do_histogram && !do_debugging && !do_arch && !do_notes
&& !do_section_groups && !do_archive_index
&& !do_dyn_syms)
- usage (stderr);
+ {
+ if (do_checks)
+ {
+ check_all = TRUE;
+ do_dynamic = do_syms = do_reloc = do_unwind = do_sections = TRUE;
+ do_segments = do_header = do_dump = do_version = TRUE;
+ do_histogram = do_debugging = do_arch = do_notes = TRUE;
+ do_section_groups = do_archive_index = do_dyn_syms = TRUE;
+ }
+ else
+ usage (stderr);
+ }
}
static const char *
filedata->dynamic_addr = sec->sh_offset;
filedata->dynamic_size = sec->sh_size;
- if (filedata->dynamic_addr < segment->p_offset
- || filedata->dynamic_addr > segment->p_offset + segment->p_filesz)
- warn (_("the .dynamic section is not contained"
- " within the dynamic segment\n"));
- else if (filedata->dynamic_addr > segment->p_offset)
- warn (_("the .dynamic section is not the first section"
- " in the dynamic segment.\n"));
+ /* The PT_DYNAMIC segment, which is used by the run-time
+ loader, should exactly match the .dynamic section. */
+ if (do_checks
+ && (filedata->dynamic_addr != segment->p_offset
+ || filedata->dynamic_size != segment->p_filesz))
+ warn (_("\
+the .dynamic section is not the same as the dynamic segment\n"));
}
/* PR binutils/17512: Avoid corrupt dynamic section info in the
while (0)
#define CHECK_ENTSIZE(section, i, type) \
- CHECK_ENTSIZE_VALUES (section, i, sizeof (Elf32_External_##type), \
+ CHECK_ENTSIZE_VALUES (section, i, sizeof (Elf32_External_##type), \
sizeof (Elf64_External_##type))
for (i = 0, section = filedata->section_headers;
{
char * name = SECTION_NAME (section);
- if (section->sh_type == SHT_DYNSYM)
+ /* Run some sanity checks on the headers and
+ possibly fill in some file data as well. */
+ switch (section->sh_type)
{
+ case SHT_DYNSYM:
if (filedata->dynamic_symbols != NULL)
{
error (_("File contains multiple dynamic symbol tables\n"));
CHECK_ENTSIZE (section, i, Sym);
filedata->dynamic_symbols
= GET_ELF_SYMBOLS (filedata, section, &filedata->num_dynamic_syms);
- }
- else if (section->sh_type == SHT_STRTAB
- && streq (name, ".dynstr"))
- {
- if (filedata->dynamic_strings != NULL)
+ filedata->dynamic_symtab_section = section;
+ break;
+
+ case SHT_STRTAB:
+ if (streq (name, ".dynstr"))
{
- error (_("File contains multiple dynamic string tables\n"));
- continue;
+ if (filedata->dynamic_strings != NULL)
+ {
+ error (_("File contains multiple dynamic string tables\n"));
+ continue;
+ }
+
+ filedata->dynamic_strings
+ = (char *) get_data (NULL, filedata, section->sh_offset,
+ 1, section->sh_size, _("dynamic strings"));
+ filedata->dynamic_strings_length
+ = filedata->dynamic_strings == NULL ? 0 : section->sh_size;
+ filedata->dynamic_strtab_section = section;
}
+ break;
+
+ case SHT_SYMTAB_SHNDX:
+ {
+ elf_section_list * entry = xmalloc (sizeof * entry);
- filedata->dynamic_strings
- = (char *) get_data (NULL, filedata, section->sh_offset,
- 1, section->sh_size, _("dynamic strings"));
- filedata->dynamic_strings_length
- = filedata->dynamic_strings == NULL ? 0 : section->sh_size;
- }
- else if (section->sh_type == SHT_SYMTAB_SHNDX)
- {
- elf_section_list * entry = xmalloc (sizeof * entry);
-
- entry->hdr = section;
- entry->next = filedata->symtab_shndx_list;
- filedata->symtab_shndx_list = entry;
- }
- else if (section->sh_type == SHT_SYMTAB)
- CHECK_ENTSIZE (section, i, Sym);
- else if (section->sh_type == SHT_GROUP)
- CHECK_ENTSIZE_VALUES (section, i, GRP_ENTRY_SIZE, GRP_ENTRY_SIZE);
- else if (section->sh_type == SHT_REL)
- CHECK_ENTSIZE (section, i, Rel);
- else if (section->sh_type == SHT_RELA)
- CHECK_ENTSIZE (section, i, Rela);
- else if ((do_debugging || do_debug_info || do_debug_abbrevs
- || do_debug_lines || do_debug_pubnames || do_debug_pubtypes
- || do_debug_aranges || do_debug_frames || do_debug_macinfo
- || do_debug_str || do_debug_loc || do_debug_ranges
- || do_debug_addr || do_debug_cu_index || do_debug_links)
- && (const_strneq (name, ".debug_")
- || const_strneq (name, ".zdebug_")))
+ entry->hdr = section;
+ entry->next = filedata->symtab_shndx_list;
+ filedata->symtab_shndx_list = entry;
+ }
+ break;
+
+ case SHT_SYMTAB:
+ CHECK_ENTSIZE (section, i, Sym);
+ break;
+
+ case SHT_GROUP:
+ CHECK_ENTSIZE_VALUES (section, i, GRP_ENTRY_SIZE, GRP_ENTRY_SIZE);
+ break;
+
+ case SHT_REL:
+ CHECK_ENTSIZE (section, i, Rel);
+ if (do_checks && section->sh_size == 0)
+ warn (_("Section '%s': zero-sized relocation section\n"), name);
+ break;
+
+ case SHT_RELA:
+ CHECK_ENTSIZE (section, i, Rela);
+ if (do_checks && section->sh_size == 0)
+ warn (_("Section '%s': zero-sized relocation section\n"), name);
+ break;
+
+ case SHT_NOTE:
+ case SHT_PROGBITS:
+ /* Having a zero sized section is not illegal according to the
+ ELF standard, but it might be an indication that something
+ is wrong. So issue a warning if we are running in lint mode. */
+ if (do_checks && section->sh_size == 0)
+ warn (_("Section '%s': has a size of zero - is this intended ?\n"), name);
+ break;
+
+ default:
+ break;
+ }
+
+ if ((do_debugging || do_debug_info || do_debug_abbrevs
+ || do_debug_lines || do_debug_pubnames || do_debug_pubtypes
+ || do_debug_aranges || do_debug_frames || do_debug_macinfo
+ || do_debug_str || do_debug_loc || do_debug_ranges
+ || do_debug_addr || do_debug_cu_index || do_debug_links)
+ && (const_strneq (name, ".debug_")
+ || const_strneq (name, ".zdebug_")))
{
if (name[1] == 'z')
name += sizeof (".zdebug_") - 1;
if (symtab_sec != sec)
{
symtab_sec = sec;
- if (symtab)
- free (symtab);
+ free (symtab);
symtab = GET_ELF_SYMBOLS (filedata, symtab_sec, & num_syms);
}
group_name = SECTION_NAME (filedata->section_headers + sym->st_shndx);
strtab_sec = NULL;
- if (strtab)
- free (strtab);
+ free (strtab);
strtab = NULL;
strtab_size = 0;
}
if (symtab_sec->sh_link >= filedata->file_header.e_shnum)
{
strtab_sec = NULL;
- if (strtab)
- free (strtab);
+ free (strtab);
strtab = NULL;
strtab_size = 0;
}
!= (sec = filedata->section_headers + symtab_sec->sh_link))
{
strtab_sec = sec;
- if (strtab)
- free (strtab);
+ free (strtab);
strtab = (char *) get_data (NULL, filedata, strtab_sec->sh_offset,
1, strtab_sec->sh_size,
group->root = g;
}
- if (start)
- free (start);
+ free (start);
group++;
}
}
- if (symtab)
- free (symtab);
- if (strtab)
- free (strtab);
+ free (symtab);
+ free (strtab);
return TRUE;
}
}
}
- if (strtab != NULL)
- free (strtab);
+ free (strtab);
return res;
}
symtab, nsyms, strtab, strtablen,
is_rela,
symsec->sh_type == SHT_DYNSYM);
- if (strtab)
- free (strtab);
+ free (strtab);
free (symtab);
}
else
&& aux.table_len > 0)
dump_ia64_unwind (filedata, & aux);
- if (aux.table)
- free ((char *) aux.table);
- if (aux.info)
- free ((char *) aux.info);
+ free ((char *) aux.table);
+ free ((char *) aux.info);
aux.table = NULL;
aux.info = NULL;
}
}
- if (aux.symtab)
- free (aux.symtab);
- if (aux.strtab)
- free ((char *) aux.strtab);
+ free (aux.symtab);
+ free ((char *) aux.strtab);
return res;
}
res = FALSE;
}
- if (aux.table)
- free ((char *) aux.table);
+ free ((char *) aux.table);
aux.table = NULL;
}
}
- if (aux.symtab)
- free (aux.symtab);
- if (aux.strtab)
- free ((char *) aux.strtab);
+ free (aux.symtab);
+ free ((char *) aux.strtab);
return res;
}
static void
arm_free_section (struct arm_section *arm_sec)
{
- if (arm_sec->data != NULL)
- free (arm_sec->data);
-
- if (arm_sec->rela != NULL)
- free (arm_sec->rela);
+ free (arm_sec->data);
+ free (arm_sec->rela);
}
/* 1) If SEC does not match the one cached in ARM_SEC, then free the current
}
}
- if (aux.symtab)
- free (aux.symtab);
- if (aux.strtab)
- free ((char *) aux.strtab);
+ free (aux.symtab);
+ free ((char *) aux.strtab);
return res;
}
no_hash:
if (num_of_syms == 0)
{
- if (filedata->buckets)
- {
- free (filedata->buckets);
- filedata->buckets = NULL;
- }
- if (filedata->chains)
- {
- free (filedata->chains);
- filedata->chains = NULL;
- }
+ free (filedata->buckets);
+ filedata->buckets = NULL;
+ free (filedata->chains);
+ filedata->chains = NULL;
filedata->nbuckets = 0;
}
}
{
if (filedata->dynamic_info_DT_MIPS_XHASH)
{
- if (filedata->mipsxlat[off] >= num_of_syms)
+ if (off < filedata->ngnuchains
+ && filedata->mipsxlat[off] >= num_of_syms)
num_of_syms = filedata->mipsxlat[off] + 1;
}
else
if (num_of_syms == 0)
{
no_gnu_hash:
- if (filedata->mipsxlat)
- {
- free (filedata->mipsxlat);
- filedata->mipsxlat = NULL;
- }
- if (filedata->gnuchains)
- {
- free (filedata->gnuchains);
- filedata->gnuchains = NULL;
- }
- if (filedata->gnubuckets)
- {
- free (filedata->gnubuckets);
- filedata->gnubuckets = NULL;
- }
+ free (filedata->mipsxlat);
+ filedata->mipsxlat = NULL;
+ free (filedata->gnuchains);
+ filedata->gnuchains = NULL;
+ free (filedata->gnubuckets);
+ filedata->gnubuckets = NULL;
filedata->ngnubuckets = 0;
filedata->ngnuchains = 0;
}
section.sh_size = (num_of_syms
* filedata->dynamic_info[DT_SYMENT]);
section.sh_entsize = filedata->dynamic_info[DT_SYMENT];
+
+ if (do_checks
+ && filedata->dynamic_symtab_section != NULL
+ && ((filedata->dynamic_symtab_section->sh_offset
+ != section.sh_offset)
+ || (filedata->dynamic_symtab_section->sh_size
+ != section.sh_size)
+ || (filedata->dynamic_symtab_section->sh_entsize
+ != section.sh_entsize)))
+ warn (_("\
+the .dynsym section doesn't match the DT_SYMTAB and DT_SYMENT tags\n"));
+
section.sh_name = filedata->string_table_length;
filedata->dynamic_symbols
= GET_ELF_SYMBOLS (filedata, §ion,
offset = offset_from_vma (filedata,
filedata->dynamic_info[DT_STRTAB],
str_tab_len);
+ if (do_checks
+ && filedata->dynamic_strtab_section
+ && ((filedata->dynamic_strtab_section->sh_offset
+ != (file_ptr) offset)
+ || (filedata->dynamic_strtab_section->sh_size
+ != str_tab_len)))
+ warn (_("\
+the .dynstr section doesn't match the DT_STRTAB and DT_STRSZ tags\n"));
+
filedata->dynamic_strings
= (char *) get_data (NULL, filedata, offset, 1, str_tab_len,
_("dynamic string table"));
section->address = 0;
section->size = 0;
- if (section->reloc_info != NULL)
- {
- free (section->reloc_info);
- section->reloc_info = NULL;
- section->num_relocs = 0;
- }
+ free (section->reloc_info);
+ section->reloc_info = NULL;
+ section->num_relocs = 0;
}
static bfd_boolean
}
sgot_print_fail:
- if (data)
- free (data);
+ free (data);
}
return res;
}
}
got_print_fail:
- if (data)
- free (data);
+ free (data);
}
if (mips_pltgot != 0 && jmprel != 0 && pltrel != 0 && pltrelsz != 0)
}
printf ("\n");
- if (data)
- free (data);
+ free (data);
free (rels);
}
Elf_Internal_Shdr *sect = NULL;
sect = find_section (filedata, ".nds32_e_flags");
- if (sect != NULL)
+ if (sect != NULL && sect->sh_size >= 4)
{
- unsigned int *flag;
+ unsigned char *buf;
+ unsigned int flag;
printf ("\nNDS32 elf flags section:\n");
- flag = get_data (NULL, filedata, sect->sh_offset, 1,
- sect->sh_size, _("NDS32 elf flags section"));
+ buf = get_data (NULL, filedata, sect->sh_offset, 1, 4,
+ _("NDS32 elf flags section"));
- if (! flag)
+ if (buf == NULL)
return FALSE;
- switch ((*flag) & 0x3)
+ flag = byte_get (buf, 4);
+ free (buf);
+ switch (flag & 0x3)
{
case 0:
printf ("(VEC_SIZE):\tNo entry.\n");
if (! process_note (& inote, filedata))
res = FALSE;
- if (temp != NULL)
- {
- free (temp);
- temp = NULL;
- }
+ free (temp);
+ temp = NULL;
}
free (pnotes);
filedata->string_table = NULL;
filedata->string_table_length = 0;
- if (filedata->dump.dump_sects != NULL)
- {
- free (filedata->dump.dump_sects);
- filedata->dump.dump_sects = NULL;
- filedata->dump.num_dump_sects = 0;
- }
+ free (filedata->dump.dump_sects);
+ filedata->dump.dump_sects = NULL;
+ filedata->dump.num_dump_sects = 0;
- if (filedata->dynamic_strings)
- {
- free (filedata->dynamic_strings);
- filedata->dynamic_strings = NULL;
- filedata->dynamic_strings_length = 0;
- }
+ free (filedata->dynamic_strings);
+ filedata->dynamic_strings = NULL;
+ filedata->dynamic_strings_length = 0;
- if (filedata->dynamic_symbols)
- {
- free (filedata->dynamic_symbols);
- filedata->dynamic_symbols = NULL;
- filedata->num_dynamic_syms = 0;
- }
+ free (filedata->dynamic_symbols);
+ filedata->dynamic_symbols = NULL;
+ filedata->num_dynamic_syms = 0;
- if (filedata->dynamic_syminfo)
- {
- free (filedata->dynamic_syminfo);
- filedata->dynamic_syminfo = NULL;
- }
+ free (filedata->dynamic_syminfo);
+ filedata->dynamic_syminfo = NULL;
- if (filedata->dynamic_section)
- {
- free (filedata->dynamic_section);
- filedata->dynamic_section = NULL;
- }
+ free (filedata->dynamic_section);
+ filedata->dynamic_section = NULL;
while (filedata->symtab_shndx_list != NULL)
{
filedata->symtab_shndx_list = next;
}
- if (filedata->section_headers_groups)
- {
- free (filedata->section_headers_groups);
- filedata->section_headers_groups = NULL;
- }
+ free (filedata->section_headers_groups);
+ filedata->section_headers_groups = NULL;
if (filedata->section_groups)
{
}
else
{
- if (do_archive_index)
+ if (do_archive_index && !check_all)
error (_("File %s is not an archive so its index cannot be displayed.\n"),
file_name);
parse_args (& cmdline, argc, argv);
if (optind < (argc - 1))
+ /* When displaying information for more than one file,
+ prefix the information with the file name. */
show_name = TRUE;
else if (optind >= argc)
{
+ /* Ensure that the warning is always displayed. */
+ do_checks = TRUE;
+
warn (_("Nothing to do.\n"));
usage (stderr);
}
if (! process_file (argv[optind++]))
err = TRUE;
- if (cmdline.dump_sects != NULL)
- free (cmdline.dump_sects);
+ free (cmdline.dump_sects);
free (dump_ctf_symtab_name);
free (dump_ctf_strtab_name);
projects / deliverable / binutils-gdb.git / blobdiff