bfd_boolean
bfd_set_format(bfd *abfd, bfd_format format)
{
if (bfd_read_p(abfd) ||
#if 0
((int)abfd->format < (int)bfd_unknown) ||
#endif /* 0 */
((unsigned int)abfd->format >= (unsigned int)bfd_type_end))
{
bfd_set_error(bfd_error_invalid_operation);
return FALSE;
}
if (abfd->format != bfd_unknown) {
return (abfd->format == format);
}
/* Presume the answer is yes: */
abfd->format = format;
if (!BFD_SEND_FMT(abfd, _bfd_set_format, (abfd)))
{
abfd->format = bfd_unknown;
return FALSE;
}
return TRUE;
}
bfd_boolean
bfd_check_format_matches (bfd *abfd, bfd_format format, char ***matching)
{
extern const bfd_target binary_vec;
const bfd_target * const *target;
const bfd_target **matching_vector = NULL;
const bfd_target *save_targ, *right_targ, *ar_right_targ;
int match_count;
int ar_match_index;
if (!bfd_read_p (abfd)
|| (unsigned int) abfd->format >= (unsigned int) bfd_type_end)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
if (abfd->format != bfd_unknown)
return abfd->format == format;
/* Since the target type was defaulted, check them
all in the hope that one will be uniquely recognized. */
save_targ = abfd->xvec;
match_count = 0;
ar_match_index = _bfd_target_vector_entries;
if (matching)
{
bfd_size_type amt;
*matching = NULL;
amt = sizeof (*matching_vector) * 2 * _bfd_target_vector_entries;
matching_vector = bfd_malloc (amt);
if (!matching_vector)
return FALSE;
}
right_targ = 0;
ar_right_targ = 0;
/* Presume the answer is yes. */
abfd->format = format;
/* If the target type was explicitly specified, just check that target. */
if (!abfd->target_defaulted)
{
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) /* rewind! */
{
if (matching)
free (matching_vector);
return FALSE;
}
right_targ = BFD_SEND_FMT (abfd, _bfd_check_format, (abfd));
if (right_targ)
{
abfd->xvec = right_targ; /* Set the target as returned. */
if (matching)
free (matching_vector);
return TRUE; /* File position has moved, BTW. */
}
/* For a long time the code has dropped through to check all
targets if the specified target was wrong. I don't know why,
and I'm reluctant to change it. However, in the case of an
archive, it can cause problems. If the specified target does
not permit archives (e.g., the binary target), then we should
not allow some other target to recognize it as an archive, but
should instead allow the specified target to recognize it as an
object. When I first made this change, it broke the PE target,
because the specified pei-i386 target did not recognize the
actual pe-i386 archive. Since there may be other problems of
this sort, I changed this test to check only for the binary
target. */
if (format == bfd_archive && save_targ == &binary_vec)
{
abfd->xvec = save_targ;
abfd->format = bfd_unknown;
if (matching)
free (matching_vector);
bfd_set_error (bfd_error_file_not_recognized);
return FALSE;
}
}
for (target = bfd_target_vector; *target != NULL; target++)
{
const bfd_target *temp;
bfd_error_type err;
if (*target == &binary_vec)
continue;
abfd->xvec = *target; /* Change BFD's target temporarily. */
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
{
if (matching)
free (matching_vector);
return FALSE;
}
/* If _bfd_check_format neglects to set bfd_error, assume
bfd_error_wrong_format. We didn't used to even pay any
attention to bfd_error, so I suspect that some
_bfd_check_format might have this problem. */
bfd_set_error (bfd_error_wrong_format);
temp = BFD_SEND_FMT (abfd, _bfd_check_format, (abfd));
if (temp)
{
/* This format checks out as ok! */
right_targ = temp;
/* If this is the default target, accept it, even if other
targets might match. People who want those other targets
have to set the GNUTARGET variable. */
if (temp == bfd_default_vector[0])
{
match_count = 1;
break;
}
if (matching)
matching_vector[match_count] = temp;
match_count++;
#ifdef GNU960
/* Big- and little-endian b.out archives look the same, but it
doesn't matter: there is no difference in their headers, and
member file byte orders will (I hope) be handled appropriately
by bfd. Ditto for big and little coff archives. And the 4
coff/b.out object formats are unambiguous. So accept the
first match we find. */
break;
#endif
}
else if ((err = bfd_get_error ()) == bfd_error_wrong_object_format
|| err == bfd_error_file_ambiguously_recognized)
{
/* An archive with objects of the wrong type, or an
ambiguous match. We want this target to match if we get
no better matches. */
if (ar_right_targ != bfd_default_vector[0])
ar_right_targ = *target;
if (matching)
matching_vector[ar_match_index] = *target;
ar_match_index++;
}
else if (err != bfd_error_wrong_format)
{
abfd->xvec = save_targ;
abfd->format = bfd_unknown;
if (matching)
free (matching_vector);
return FALSE;
}
}
if (match_count == 0)
{
/* Try partial matches. */
right_targ = ar_right_targ;
if (right_targ == bfd_default_vector[0])
{
match_count = 1;
}
else
{
match_count = ar_match_index - _bfd_target_vector_entries;
if (matching && match_count > 1)
memcpy (matching_vector,
matching_vector + _bfd_target_vector_entries,
sizeof (*matching_vector) * match_count);
}
}
if (match_count > 1
&& bfd_associated_vector != NULL
&& matching)
{
const bfd_target * const *assoc = bfd_associated_vector;
while ((right_targ = *assoc++) != NULL)
{
int i = match_count;
while (--i >= 0)
if (matching_vector[i] == right_targ)
break;
if (i >= 0)
{
match_count = 1;
break;
}
}
}
if (match_count == 1)
{
abfd->xvec = right_targ; /* Change BFD's target permanently. */
if (matching)
free (matching_vector);
return TRUE; /* File position has moved, BTW. */
}
abfd->xvec = save_targ; /* Restore original target type. */
abfd->format = bfd_unknown; /* Restore original format. */
if (match_count == 0)
{
bfd_set_error (bfd_error_file_not_recognized);
if (matching)
free (matching_vector);
}
else
{
bfd_set_error (bfd_error_file_ambiguously_recognized);
if (matching)
{
*matching = (char **) matching_vector;
matching_vector[match_count] = NULL;
/* Return target names. This is a little nasty. Maybe we
should do another bfd_malloc? */
while (--match_count >= 0)
{
const char *name = matching_vector[match_count]->name;
*(const char **) &matching_vector[match_count] = name;
}
}
}
return FALSE;
}
bfd_boolean
bfd_check_format_matches(bfd *abfd, bfd_format format, char ***matching)
{
const bfd_target * const *target;
const bfd_target **matching_vector = (const bfd_target **)NULL;
const bfd_target *save_targ, *right_targ, *ar_right_targ;
int match_count;
int ar_match_index;
if (!bfd_read_p(abfd)
|| ((unsigned int)abfd->format >= (unsigned int)bfd_type_end))
{
bfd_set_error(bfd_error_invalid_operation);
return FALSE;
}
if (abfd->format != bfd_unknown) {
return (abfd->format == format);
}
/* Since the target type was defaulted, check them all in the hope that
* one will be uniquely recognized: */
save_targ = abfd->xvec;
match_count = 0;
ar_match_index = (int)_bfd_target_vector_entries;
if (matching)
{
bfd_size_type amt;
*matching = NULL;
amt = (sizeof(*matching_vector) * 2 * _bfd_target_vector_entries);
matching_vector = (const bfd_target **)bfd_malloc(amt);
if (!matching_vector) {
return FALSE;
}
}
right_targ = 0;
ar_right_targ = 0;
/* Presume the answer is yes: */
abfd->format = format;
/* If the target type was explicitly specified, then just check that
* target: */
if (!abfd->target_defaulted)
{
if (bfd_seek(abfd, (file_ptr)0L, SEEK_SET) != 0) /* rewind! */
{
if (matching)
free(matching_vector);
return FALSE;
}
right_targ = BFD_SEND_FMT(abfd, _bfd_check_format, (abfd));
if (right_targ)
{
abfd->xvec = right_targ; /* Set the target as returned. */
if (matching)
free(matching_vector);
/* If the file was opened for update, then `output_has_begun'
some time ago when the file was created. Do not recompute
sections sizes or alignments in _bfd_set_section_contents.
We can not set this flag until after checking the format,
because it will interfere with creation of BFD sections. */
if (abfd->direction == both_direction)
abfd->output_has_begun = TRUE;
return TRUE; /* File position has moved, BTW. */
}
/* For a long time the code has dropped through to check all
targets if the specified target was wrong. I don't know why,
and I'm reluctant to change it. However, in the case of an
archive, it can cause problems. If the specified target does
not permit archives (e.g., the binary target), then we should
not allow some other target to recognize it as an archive, but
should instead allow the specified target to recognize it as an
object. When I first made this change, it broke the PE target,
because the specified pei-i386 target did not recognize the
actual pe-i386 archive. Since there may be other problems of
this sort, I changed this test to check only for the binary
target. */
if ((format == bfd_archive) && (save_targ == &binary_vec))
{
abfd->xvec = save_targ;
abfd->format = bfd_unknown;
if (matching)
free(matching_vector);
bfd_set_error(bfd_error_file_not_recognized);
return FALSE;
}
}
for (target = bfd_target_vector; *target != NULL; target++)
{
const bfd_target *temp;
bfd_error_type err;
if (*target == &binary_vec)
continue;
abfd->xvec = *target; /* Change BFD's target temporarily. */
if (bfd_seek(abfd, (file_ptr)0L, SEEK_SET) != 0)
{
if (matching)
free(matching_vector);
return FALSE;
}
/* If _bfd_check_format neglects to set bfd_error, assume
bfd_error_wrong_format. We didn't used to even pay any
attention to bfd_error, so I suspect that some
_bfd_check_format might have this problem. */
bfd_set_error(bfd_error_wrong_format);
temp = BFD_SEND_FMT(abfd, _bfd_check_format, (abfd));
if (temp)
{
/* This format checks out as ok! */
right_targ = temp;
/* If this is the default target, accept it, even if other
targets might match. People who want those other targets
have to set the GNUTARGET variable. */
if (temp == bfd_default_vector[0])
{
match_count = 1;
break;
}
if (matching)
matching_vector[match_count] = temp;
match_count++;
}
else if (((err = bfd_get_error()) == bfd_error_wrong_object_format)
|| (err == bfd_error_file_ambiguously_recognized))
{
/* An archive with objects of the wrong type, or an
ambiguous match. We want this target to match if we get
no better matches. */
if (ar_right_targ != bfd_default_vector[0])
ar_right_targ = *target;
if (matching)
matching_vector[ar_match_index] = *target;
ar_match_index++;
}
else if (err != bfd_error_wrong_format)
{
abfd->xvec = save_targ;
abfd->format = bfd_unknown;
if (matching)
free(matching_vector);
return FALSE;
}
}
if (match_count == 0)
{
/* Try partial matches: */
right_targ = ar_right_targ;
if (right_targ == bfd_default_vector[0])
{
match_count = 1;
}
else
{
match_count = (int)((size_t)ar_match_index - _bfd_target_vector_entries);
if (matching && (match_count > 1))
memcpy(matching_vector,
(matching_vector + _bfd_target_vector_entries),
(sizeof(*matching_vector) * (size_t)match_count));
}
}
if (match_count > 1
&& bfd_associated_vector != NULL
&& matching)
{
const bfd_target * const *assoc = bfd_associated_vector;
while ((right_targ = *assoc++) != NULL)
{
int i = match_count;
while (--i >= 0)
if (matching_vector[i] == right_targ)
break;
if (i >= 0)
{
match_count = 1;
break;
}
}
}
if (match_count == 1)
{
abfd->xvec = right_targ; /* Change BFD's target permanently. */
if (matching)
free (matching_vector);
/* If the file was opened for update, then `output_has_begun'
some time ago when the file was created. Do not recompute
sections sizes or alignments in _bfd_set_section_contents.
We can not set this flag until after checking the format,
because it will interfere with creation of BFD sections. */
if (abfd->direction == both_direction)
abfd->output_has_begun = TRUE;
return TRUE; /* File position has moved, BTW. */
}
abfd->xvec = save_targ; /* Restore original target type. */
abfd->format = bfd_unknown; /* Restore original format. */
if (match_count == 0)
{
bfd_set_error (bfd_error_file_not_recognized);
if (matching)
free (matching_vector);
}
else
{
bfd_set_error (bfd_error_file_ambiguously_recognized);
if (matching)
{
*matching = (char **) matching_vector;
matching_vector[match_count] = NULL;
/* Return target names. This is a little nasty. Maybe we
should do another bfd_malloc? */
while (--match_count >= 0)
{
const char *name = matching_vector[match_count]->name;
*(const char **) &matching_vector[match_count] = name;
}
}
}
return FALSE;
}
