/* elfcomm.c -- common code for ELF format file.
- Copyright 2010
- Free Software Foundation, Inc.
+ Copyright (C) 2010-2014 Free Software Foundation, Inc.
Originally developed by Eric Youngdale <eric@andante.jic.com>
Modifications by Nick Clifton <nickc@redhat.com>
#include "aout/ar.h"
#include "bucomm.h"
#include "elfcomm.h"
+#include <assert.h>
void
error (const char *message, ...)
{
va_list args;
+ /* Try to keep error messages in sync with the program's normal output. */
+ fflush (stdout);
+
va_start (args, message);
fprintf (stderr, _("%s: Error: "), program_name);
vfprintf (stderr, message, args);
{
va_list args;
+ /* Try to keep warning messages in sync with the program's normal output. */
+ fflush (stdout);
+
va_start (args, message);
fprintf (stderr, _("%s: Warning: "), program_name);
vfprintf (stderr, message, args);
| (((unsigned long) (field[2])) << 16)
| (((unsigned long) (field[3])) << 24);
+ case 5:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[0]))
+ | (((elf_vma) (field[1])) << 8)
+ | (((elf_vma) (field[2])) << 16)
+ | (((elf_vma) (field[3])) << 24)
+ | (((elf_vma) (field[4])) << 32);
+ else if (sizeof (elf_vma) == 4)
+ /* We want to extract data from an 8 byte wide field and
+ place it into a 4 byte wide field. Since this is a little
+ endian source we can just use the 4 byte extraction code. */
+ return ((unsigned long) (field[0]))
+ | (((unsigned long) (field[1])) << 8)
+ | (((unsigned long) (field[2])) << 16)
+ | (((unsigned long) (field[3])) << 24);
+
+ case 6:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[0]))
+ | (((elf_vma) (field[1])) << 8)
+ | (((elf_vma) (field[2])) << 16)
+ | (((elf_vma) (field[3])) << 24)
+ | (((elf_vma) (field[4])) << 32)
+ | (((elf_vma) (field[5])) << 40);
+ else if (sizeof (elf_vma) == 4)
+ /* We want to extract data from an 8 byte wide field and
+ place it into a 4 byte wide field. Since this is a little
+ endian source we can just use the 4 byte extraction code. */
+ return ((unsigned long) (field[0]))
+ | (((unsigned long) (field[1])) << 8)
+ | (((unsigned long) (field[2])) << 16)
+ | (((unsigned long) (field[3])) << 24);
+
+ case 7:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[0]))
+ | (((elf_vma) (field[1])) << 8)
+ | (((elf_vma) (field[2])) << 16)
+ | (((elf_vma) (field[3])) << 24)
+ | (((elf_vma) (field[4])) << 32)
+ | (((elf_vma) (field[5])) << 40)
+ | (((elf_vma) (field[6])) << 48);
+ else if (sizeof (elf_vma) == 4)
+ /* We want to extract data from an 8 byte wide field and
+ place it into a 4 byte wide field. Since this is a little
+ endian source we can just use the 4 byte extraction code. */
+ return ((unsigned long) (field[0]))
+ | (((unsigned long) (field[1])) << 8)
+ | (((unsigned long) (field[2])) << 16)
+ | (((unsigned long) (field[3])) << 24);
+
case 8:
if (sizeof (elf_vma) == 8)
return ((elf_vma) (field[0]))
| (((unsigned long) (field[1])) << 16)
| (((unsigned long) (field[0])) << 24);
+ case 5:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[4]))
+ | (((elf_vma) (field[3])) << 8)
+ | (((elf_vma) (field[2])) << 16)
+ | (((elf_vma) (field[1])) << 24)
+ | (((elf_vma) (field[0])) << 32);
+ else if (sizeof (elf_vma) == 4)
+ {
+ /* Although we are extracting data from an 8 byte wide field,
+ we are returning only 4 bytes of data. */
+ field += 1;
+ return ((unsigned long) (field[3]))
+ | (((unsigned long) (field[2])) << 8)
+ | (((unsigned long) (field[1])) << 16)
+ | (((unsigned long) (field[0])) << 24);
+ }
+
+ case 6:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[5]))
+ | (((elf_vma) (field[4])) << 8)
+ | (((elf_vma) (field[3])) << 16)
+ | (((elf_vma) (field[2])) << 24)
+ | (((elf_vma) (field[1])) << 32)
+ | (((elf_vma) (field[0])) << 40);
+ else if (sizeof (elf_vma) == 4)
+ {
+ /* Although we are extracting data from an 8 byte wide field,
+ we are returning only 4 bytes of data. */
+ field += 2;
+ return ((unsigned long) (field[3]))
+ | (((unsigned long) (field[2])) << 8)
+ | (((unsigned long) (field[1])) << 16)
+ | (((unsigned long) (field[0])) << 24);
+ }
+
+ case 7:
+ if (sizeof (elf_vma) == 8)
+ return ((elf_vma) (field[6]))
+ | (((elf_vma) (field[5])) << 8)
+ | (((elf_vma) (field[4])) << 16)
+ | (((elf_vma) (field[3])) << 24)
+ | (((elf_vma) (field[2])) << 32)
+ | (((elf_vma) (field[1])) << 40)
+ | (((elf_vma) (field[0])) << 48);
+ else if (sizeof (elf_vma) == 4)
+ {
+ /* Although we are extracting data from an 8 byte wide field,
+ we are returning only 4 bytes of data. */
+ field += 3;
+ return ((unsigned long) (field[3]))
+ | (((unsigned long) (field[2])) << 8)
+ | (((unsigned long) (field[1])) << 16)
+ | (((unsigned long) (field[0])) << 24);
+ }
+
case 8:
if (sizeof (elf_vma) == 8)
return ((elf_vma) (field[7]))
| (((elf_vma) (field[0])) << 56);
else if (sizeof (elf_vma) == 4)
{
- /* Although we are extracing data from an 8 byte wide field,
+ /* Although we are extracting data from an 8 byte wide field,
we are returning only 4 bytes of data. */
field += 4;
return ((unsigned long) (field[3]))
return (x ^ 0x80) - 0x80;
case 2:
return (x ^ 0x8000) - 0x8000;
+ case 3:
+ return (x ^ 0x800000) - 0x800000;
case 4:
return (x ^ 0x80000000) - 0x80000000;
+ case 5:
+ case 6:
+ case 7:
case 8:
+ /* Reads of 5-, 6-, and 7-byte numbers are the result of
+ trying to read past the end of a buffer, and will therefore
+ not have meaningful values, so we don't try to deal with
+ the sign in these cases. */
return x;
default:
abort ();
}
}
+/* Return the high-order 32-bits and the low-order 32-bits
+ of an 8-byte value separately. */
+
+void
+byte_get_64 (unsigned char *field, elf_vma *high, elf_vma *low)
+{
+ if (byte_get == byte_get_big_endian)
+ {
+ *high = byte_get_big_endian (field, 4);
+ *low = byte_get_big_endian (field + 4, 4);
+ }
+ else
+ {
+ *high = byte_get_little_endian (field + 4, 4);
+ *low = byte_get_little_endian (field, 4);
+ }
+ return;
+}
+
/* Return the path name for a proxy entry in a thin archive, adjusted
relative to the path name of the thin archive itself if necessary.
Always returns a pointer to malloc'ed memory. */
return member_file_name;
}
+/* Processes the archive index table and symbol table in ARCH.
+ Entries in the index table are SIZEOF_AR_INDEX bytes long.
+ Fills in ARCH->next_arhdr_offset and ARCH->arhdr.
+ If READ_SYMBOLS is true then fills in ARCH->index_num, ARCH->index_array,
+ ARCH->sym_size and ARCH->sym_table.
+ It is the caller's responsibility to free ARCH->index_array and
+ ARCH->sym_table.
+ Returns TRUE upon success, FALSE otherwise.
+ If failure occurs an error message is printed. */
+
+static bfd_boolean
+process_archive_index_and_symbols (struct archive_info * arch,
+ unsigned int sizeof_ar_index,
+ bfd_boolean read_symbols)
+{
+ size_t got;
+ unsigned long size;
+
+ size = strtoul (arch->arhdr.ar_size, NULL, 10);
+ size = size + (size & 1);
+
+ arch->next_arhdr_offset += sizeof arch->arhdr + size;
+
+ if (! read_symbols)
+ {
+ if (fseek (arch->file, size, SEEK_CUR) != 0)
+ {
+ error (_("%s: failed to skip archive symbol table\n"),
+ arch->file_name);
+ return FALSE;
+ }
+ }
+ else
+ {
+ unsigned long i;
+ /* A buffer used to hold numbers read in from an archive index.
+ These are always SIZEOF_AR_INDEX bytes long and stored in
+ big-endian format. */
+ unsigned char integer_buffer[sizeof arch->index_num];
+ unsigned char * index_buffer;
+
+ assert (sizeof_ar_index <= sizeof integer_buffer);
+
+ /* Check the size of the archive index. */
+ if (size < sizeof_ar_index)
+ {
+ error (_("%s: the archive index is empty\n"), arch->file_name);
+ return FALSE;
+ }
+
+ /* Read the number of entries in the archive index. */
+ got = fread (integer_buffer, 1, sizeof_ar_index, arch->file);
+ if (got != sizeof_ar_index)
+ {
+ error (_("%s: failed to read archive index\n"), arch->file_name);
+ return FALSE;
+ }
+
+ arch->index_num = byte_get_big_endian (integer_buffer, sizeof_ar_index);
+ size -= sizeof_ar_index;
+
+ if (size < arch->index_num * sizeof_ar_index)
+ {
+ error (_("%s: the archive index is supposed to have %ld entries of %d bytes, but the size is only %ld\n"),
+ arch->file_name, (long) arch->index_num, sizeof_ar_index, size);
+ return FALSE;
+ }
+
+ /* Read in the archive index. */
+ index_buffer = (unsigned char *)
+ malloc (arch->index_num * sizeof_ar_index);
+ if (index_buffer == NULL)
+ {
+ error (_("Out of memory whilst trying to read archive symbol index\n"));
+ return FALSE;
+ }
+
+ got = fread (index_buffer, sizeof_ar_index, arch->index_num, arch->file);
+ if (got != arch->index_num)
+ {
+ free (index_buffer);
+ error (_("%s: failed to read archive index\n"), arch->file_name);
+ return FALSE;
+ }
+
+ size -= arch->index_num * sizeof_ar_index;
+
+ /* Convert the index numbers into the host's numeric format. */
+ arch->index_array = (elf_vma *)
+ malloc (arch->index_num * sizeof (* arch->index_array));
+ if (arch->index_array == NULL)
+ {
+ free (index_buffer);
+ error (_("Out of memory whilst trying to convert the archive symbol index\n"));
+ return FALSE;
+ }
+
+ for (i = 0; i < arch->index_num; i++)
+ arch->index_array[i] =
+ byte_get_big_endian ((unsigned char *) (index_buffer + (i * sizeof_ar_index)),
+ sizeof_ar_index);
+ free (index_buffer);
+
+ /* The remaining space in the header is taken up by the symbol table. */
+ if (size < 1)
+ {
+ error (_("%s: the archive has an index but no symbols\n"),
+ arch->file_name);
+ return FALSE;
+ }
+
+ arch->sym_table = (char *) malloc (size);
+ if (arch->sym_table == NULL)
+ {
+ error (_("Out of memory whilst trying to read archive index symbol table\n"));
+ return FALSE;
+ }
+
+ arch->sym_size = size;
+ got = fread (arch->sym_table, 1, size, arch->file);
+ if (got != size)
+ {
+ error (_("%s: failed to read archive index symbol table\n"),
+ arch->file_name);
+ return FALSE;
+ }
+ }
+
+ /* Read the next archive header. */
+ got = fread (&arch->arhdr, 1, sizeof arch->arhdr, arch->file);
+ if (got != sizeof arch->arhdr && got != 0)
+ {
+ error (_("%s: failed to read archive header following archive index\n"),
+ arch->file_name);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
/* Read the symbol table and long-name table from an archive. */
int
bfd_boolean read_symbols)
{
size_t got;
- unsigned long size;
arch->file_name = strdup (file_name);
arch->file = file;
arch->longnames_size = 0;
arch->nested_member_origin = 0;
arch->is_thin_archive = is_thin_archive;
+ arch->uses_64bit_indicies = FALSE;
arch->next_arhdr_offset = SARMAG;
/* Read the first archive member header. */
}
/* See if this is the archive symbol table. */
- if (const_strneq (arch->arhdr.ar_name, "/ ")
- || const_strneq (arch->arhdr.ar_name, "/SYM64/ "))
+ if (const_strneq (arch->arhdr.ar_name, "/ "))
{
- size = strtoul (arch->arhdr.ar_size, NULL, 10);
- size = size + (size & 1);
-
- arch->next_arhdr_offset += sizeof arch->arhdr + size;
-
- if (read_symbols)
- {
- unsigned long i;
- /* A buffer used to hold numbers read in from an archive index.
- These are always 4 bytes long and stored in big-endian
- format. */
-#define SIZEOF_AR_INDEX_NUMBERS 4
- unsigned char integer_buffer[SIZEOF_AR_INDEX_NUMBERS];
- unsigned char * index_buffer;
-
- /* Check the size of the archive index. */
- if (size < SIZEOF_AR_INDEX_NUMBERS)
- {
- error (_("%s: the archive index is empty\n"), file_name);
- return 1;
- }
-
- /* Read the numer of entries in the archive index. */
- got = fread (integer_buffer, 1, sizeof integer_buffer, file);
- if (got != sizeof (integer_buffer))
- {
- error (_("%s: failed to read archive index\n"), file_name);
- return 1;
- }
- arch->index_num = byte_get_big_endian (integer_buffer,
- sizeof integer_buffer);
- size -= SIZEOF_AR_INDEX_NUMBERS;
-
- /* Read in the archive index. */
- if (size < arch->index_num * SIZEOF_AR_INDEX_NUMBERS)
- {
- error (_("%s: the archive index is supposed to have %ld entries, but the size in the header is too small\n"),
- file_name, arch->index_num);
- return 1;
- }
- index_buffer = (unsigned char *)
- malloc (arch->index_num * SIZEOF_AR_INDEX_NUMBERS);
- if (index_buffer == NULL)
- {
- error (_("Out of memory whilst trying to read archive symbol index\n"));
- return 1;
- }
- got = fread (index_buffer, SIZEOF_AR_INDEX_NUMBERS,
- arch->index_num, file);
- if (got != arch->index_num)
- {
- free (index_buffer);
- error (_("%s: failed to read archive index\n"), file_name);
- return 1;
- }
- size -= arch->index_num * SIZEOF_AR_INDEX_NUMBERS;
-
- /* Convert the index numbers into the host's numeric format. */
- arch->index_array = (long unsigned int *)
- malloc (arch->index_num * sizeof (* arch->index_array));
- if (arch->index_array == NULL)
- {
- free (index_buffer);
- error (_("Out of memory whilst trying to convert the archive symbol index\n"));
- return 1;
- }
-
- for (i = 0; i < arch->index_num; i++)
- arch->index_array[i] = byte_get_big_endian ((unsigned char *) (index_buffer + (i * SIZEOF_AR_INDEX_NUMBERS)),
- SIZEOF_AR_INDEX_NUMBERS);
- free (index_buffer);
-
- /* The remaining space in the header is taken up by the symbol
- table. */
- if (size < 1)
- {
- error (_("%s: the archive has an index but no symbols\n"),
- file_name);
- return 1;
- }
- arch->sym_table = (char *) malloc (size);
- arch->sym_size = size;
- if (arch->sym_table == NULL)
- {
- error (_("Out of memory whilst trying to read archive index symbol table\n"));
- return 1;
- }
- got = fread (arch->sym_table, 1, size, file);
- if (got != size)
- {
- error (_("%s: failed to read archive index symbol table\n"),
- file_name);
- return 1;
- }
- }
- else
- {
- if (fseek (file, size, SEEK_CUR) != 0)
- {
- error (_("%s: failed to skip archive symbol table\n"),
- file_name);
- return 1;
- }
- }
-
- /* Read the next archive header. */
- got = fread (&arch->arhdr, 1, sizeof arch->arhdr, file);
- if (got != sizeof arch->arhdr)
- {
- if (got == 0)
- return 0;
- error (_("%s: failed to read archive header following archive index\n"),
- file_name);
- return 1;
- }
+ if (! process_archive_index_and_symbols (arch, 4, read_symbols))
+ return 1;
+ }
+ else if (const_strneq (arch->arhdr.ar_name, "/SYM64/ "))
+ {
+ arch->uses_64bit_indicies = TRUE;
+ if (! process_archive_index_and_symbols (arch, 8, read_symbols))
+ return 1;
}
else if (read_symbols)
printf (_("%s has no archive index\n"), file_name);
char *member_file_name;
char *member_name;
+ if (arch->longnames == NULL || arch->longnames_size == 0)
+ {
+ error (_("Archive member uses long names, but no longname table found\n"));
+ return NULL;
+ }
+
arch->nested_member_origin = 0;
k = j = strtoul (arch->arhdr.ar_name + 1, &endp, 10);
if (arch->is_thin_archive && endp != NULL && * endp == ':')
struct archive_info * nested_arch,
const char *member_name)
{
+ const char * error_name = _("<corrupt>");
size_t len;
char * name;
len = strlen (arch->file_name) + strlen (member_name) + 3;
- if (arch->is_thin_archive && arch->nested_member_origin != 0)
- len += strlen (nested_arch->file_name) + 2;
+ if (arch->is_thin_archive
+ && arch->nested_member_origin != 0)
+ {
+ /* PR 15140: Allow for corrupt thin archives. */
+ if (nested_arch->file_name)
+ len += strlen (nested_arch->file_name) + 2;
+ else
+ len += strlen (error_name) + 2;
+ }
name = (char *) malloc (len);
if (name == NULL)
return NULL;
}
- if (arch->is_thin_archive && arch->nested_member_origin != 0)
- snprintf (name, len, "%s[%s(%s)]", arch->file_name,
- nested_arch->file_name, member_name);
+ if (arch->is_thin_archive
+ && arch->nested_member_origin != 0)
+ {
+ if (nested_arch->file_name)
+ snprintf (name, len, "%s[%s(%s)]", arch->file_name,
+ nested_arch->file_name, member_name);
+ else
+ snprintf (name, len, "%s[%s(%s)]", arch->file_name,
+ error_name, member_name);
+ }
else if (arch->is_thin_archive)
snprintf (name, len, "%s[%s]", arch->file_name, member_name);
else
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