espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-10-16 04:13:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

Use 64bit wide values in internal fields.

Browse Source 
Check symbol index against number of symbols when displaying relocations
This commit is contained in:
Nick Clifton
1999-06-04 11:33:32 +00:00
parent 398e8c258a
commit 1993627733
2 changed files with 54 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
binutils/ChangeLog
View File

@ -1,3 +1,10 @@
1999-06-04 Nick Clifton <nickc@cygnus.com>
* readelf.c: Use 64bit wide fields in internal strcutures even if
targetting a 32bit architecture.
(dump_relocations): Take a new parameter - the number of symbols
in the symbol table.
1999-06-04 Nick Clifton <nickc@cygnus.com> 1999-06-04 Nick Clifton <nickc@cygnus.com>
* readelf.c: Add support for 64bit ELF files. * readelf.c: Add support for 64bit ELF files.

85
binutils/readelf.c
View File

@ -27,6 +27,9 @@
#include <stdio.h> #include <stdio.h>
#include <time.h> #include <time.h>
/* Define BFD64 here, even if our default architecture is 32 bit ELF
as this will allow us to read in and parse 64bit and 32bit ELF files. */
#define BFD64
#include "bfd.h" #include "bfd.h"
#include "elf/common.h" #include "elf/common.h"
@ -76,6 +79,7 @@ unsigned int rela_addr;
unsigned int rela_size; unsigned int rela_size;
char * dynamic_strings; char * dynamic_strings;
char * string_table; char * string_table;
unsigned long num_dynamic_syms;
Elf_Internal_Sym * dynamic_symbols; Elf_Internal_Sym * dynamic_symbols;
Elf_Internal_Syminfo * dynamic_syminfo; Elf_Internal_Syminfo * dynamic_syminfo;
unsigned long dynamic_syminfo_offset; unsigned long dynamic_syminfo_offset;
@ -120,7 +124,7 @@ static bfd_vma byte_get_little_endian PARAMS ((unsigned char *,
static bfd_vma byte_get_big_endian PARAMS ((unsigned char *, int)); static bfd_vma byte_get_big_endian PARAMS ((unsigned char *, int));
static const char * get_mips_dynamic_type PARAMS ((unsigned long)); static const char * get_mips_dynamic_type PARAMS ((unsigned long));
static const char * get_dynamic_type PARAMS ((unsigned long)); static const char * get_dynamic_type PARAMS ((unsigned long));
static int dump_relocations PARAMS ((FILE *, unsigned long, unsigned long, Elf_Internal_Sym *, char *, int)); static int dump_relocations PARAMS ((FILE *, unsigned long, unsigned long, Elf_Internal_Sym *, unsigned long, char *, int));
static char * get_file_type PARAMS ((unsigned)); static char * get_file_type PARAMS ((unsigned));
static char * get_machine_name PARAMS ((unsigned)); static char * get_machine_name PARAMS ((unsigned));
static char * get_machine_flags PARAMS ((unsigned, unsigned)); static char * get_machine_flags PARAMS ((unsigned, unsigned));
@ -430,11 +434,12 @@ guess_is_rela (e_machine)
/* Display the contents of the relocation data found at the specified offset. */ /* Display the contents of the relocation data found at the specified offset. */
static int static int
dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela) dump_relocations (file, rel_offset, rel_size, symtab, nsyms, strtab, is_rela)
FILE * file; FILE * file;
unsigned long rel_offset; unsigned long rel_offset;
unsigned long rel_size; unsigned long rel_size;
Elf_Internal_Sym * symtab; Elf_Internal_Sym * symtab;
unsigned long nsyms;
char * strtab; char * strtab;
int is_rela; int is_rela;
{ {
@ -592,7 +597,6 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela)
offset = rels [i].r_offset; offset = rels [i].r_offset;
info = rels [i].r_info; info = rels [i].r_info;
} }
if (is_32bit_elf) if (is_32bit_elf)
{ {
@ -708,24 +712,32 @@ dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela)
else else
printf ("%-21.21s", rtype); printf ("%-21.21s", rtype);
if (symtab_index && symtab != NULL) if (symtab_index)
{ {
Elf_Internal_Sym * psym; if (symtab != NULL)
{
if (symtab_index >= nsyms)
printf (" bad symbol index: %08lx", (unsigned long) symtab_index);
else
{
Elf_Internal_Sym * psym;
psym = symtab + symtab_index; psym = symtab + symtab_index;
printf (" %08lx ", (unsigned long) psym->st_value); printf (" %08lx ", (unsigned long) psym->st_value);
if (psym->st_name == 0) if (psym->st_name == 0)
printf ("%-25.25s", printf ("%-25.25s",
SECTION_NAME (section_headers + psym->st_shndx)); SECTION_NAME (section_headers + psym->st_shndx));
else if (strtab == NULL) else if (strtab == NULL)
printf (_("<string table index %3ld>"), psym->st_name); printf (_("<string table index %3ld>"), psym->st_name);
else else
printf ("%-25.25s", strtab + psym->st_name); printf ("%-25.25s", strtab + psym->st_name);
if (is_rela) if (is_rela)
printf (" + %lx", (unsigned long) relas [i].r_addend); printf (" + %lx", (unsigned long) relas [i].r_addend);
}
}
} }
else if (is_rela) else if (is_rela)
printf ("%34c%lx", ' ', (unsigned long) relas[i].r_addend); printf ("%34c%lx", ' ', (unsigned long) relas[i].r_addend);
@ -2042,9 +2054,9 @@ process_section_headers (file)
continue; continue;
} }
num_dynamic_syms = section->sh_size / section->sh_entsize;
dynamic_symbols = dynamic_symbols =
GET_ELF_SYMBOLS (file, section->sh_offset, GET_ELF_SYMBOLS (file, section->sh_offset, num_dynamic_syms);
section->sh_size / section->sh_entsize);
} }
else if (section->sh_type == SHT_STRTAB else if (section->sh_type == SHT_STRTAB
&& strcmp (name, ".dynstr") == 0) && strcmp (name, ".dynstr") == 0)
@ -2144,6 +2156,7 @@ process_relocs (file)
{ {
rel_offset = dynamic_info[DT_JMPREL]; rel_offset = dynamic_info[DT_JMPREL];
rel_size = dynamic_info[DT_PLTRELSZ]; rel_size = dynamic_info[DT_PLTRELSZ];
switch (dynamic_info[DT_PLTREL]) switch (dynamic_info[DT_PLTREL])
{ {
case DT_REL: case DT_REL:
@ -2165,7 +2178,7 @@ process_relocs (file)
rel_offset, rel_size); rel_offset, rel_size);
dump_relocations (file, rel_offset - loadaddr, rel_size, dump_relocations (file, rel_offset - loadaddr, rel_size,
dynamic_symbols, dynamic_strings, is_rela); dynamic_symbols, num_dynamic_syms, dynamic_strings, is_rela);
} }
else else
printf (_("\nThere are no dynamic relocations in this file.\n")); printf (_("\nThere are no dynamic relocations in this file.\n"));
@ -2194,26 +2207,22 @@ process_relocs (file)
Elf_Internal_Sym * symtab; Elf_Internal_Sym * symtab;
char * strtab; char * strtab;
int is_rela; int is_rela;
unsigned long nsyms;
printf (_("\nRelocation section ")); printf (_("\nRelocation section "));
if (string_table == NULL) if (string_table == NULL)
{ printf ("%d", section->sh_name);
printf ("%d", section->sh_name);
}
else else
{ printf ("'%s'", SECTION_NAME (section));
printf ("'%s'", SECTION_NAME (section));
}
printf (_(" at offset 0x%lx contains %lu entries:\n"), printf (_(" at offset 0x%lx contains %lu entries:\n"),
rel_offset, (unsigned long) (rel_size / section->sh_entsize)); rel_offset, (unsigned long) (rel_size / section->sh_entsize));
symsec = section_headers + section->sh_link; symsec = section_headers + section->sh_link;
symtab = nsyms = symsec->sh_size / symsec->sh_entsize;
GET_ELF_SYMBOLS (file, symsec->sh_offset, symtab = GET_ELF_SYMBOLS (file, symsec->sh_offset, nsyms);
symsec->sh_size / symsec->sh_entsize);
if (symtab == NULL) if (symtab == NULL)
continue; continue;
@ -2225,7 +2234,7 @@ process_relocs (file)
is_rela = section->sh_type == SHT_RELA; is_rela = section->sh_type == SHT_RELA;
dump_relocations (file, rel_offset, rel_size, symtab, strtab, is_rela); dump_relocations (file, rel_offset, rel_size, symtab, nsyms, strtab, is_rela);
free (strtab); free (strtab);
free (symtab); free (symtab);
@ -2425,7 +2434,6 @@ process_dynamic_segment (file)
++i, ++ entry) ++i, ++ entry)
{ {
unsigned long offset; unsigned long offset;
long num_syms;
if (entry->d_tag != DT_SYMTAB) if (entry->d_tag != DT_SYMTAB)
continue; continue;
@ -2442,17 +2450,17 @@ process_dynamic_segment (file)
error (_("Unable to seek to end of file!")); error (_("Unable to seek to end of file!"));
if (is_32bit_elf) if (is_32bit_elf)
num_syms = (ftell (file) - offset) / sizeof (Elf32_External_Sym); num_dynamic_syms = (ftell (file) - offset) / sizeof (Elf32_External_Sym);
else else
num_syms = (ftell (file) - offset) / sizeof (Elf64_External_Sym); num_dynamic_syms = (ftell (file) - offset) / sizeof (Elf64_External_Sym);
if (num_syms < 1) if (num_dynamic_syms < 1)
{ {
error (_("Unable to determine the number of symbols to load\n")); error (_("Unable to determine the number of symbols to load\n"));
continue; continue;
} }
dynamic_symbols = GET_ELF_SYMBOLS (file, offset, num_syms); dynamic_symbols = GET_ELF_SYMBOLS (file, offset, num_dynamic_syms);
} }
} }
@ -5866,7 +5874,7 @@ process_mips_specific (file)
for (cnt = 0; cnt < conflictsno; ++cnt) for (cnt = 0; cnt < conflictsno; ++cnt)
{ {
Elf_Internal_Sym *psym = &dynamic_symbols[iconf[cnt]]; Elf_Internal_Sym * psym = &dynamic_symbols[iconf[cnt]];
printf ("%5u: %8lu %#10lx %s\n", printf ("%5u: %8lu %#10lx %s\n",
cnt, iconf[cnt], (unsigned long) psym->st_value, cnt, iconf[cnt], (unsigned long) psym->st_value,
@ -6050,6 +6058,7 @@ process_file (file_name)
{ {
free (dynamic_symbols); free (dynamic_symbols);
dynamic_symbols = NULL; dynamic_symbols = NULL;
num_dynamic_syms = 0;
} }
if (dynamic_syminfo) if (dynamic_syminfo)