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* archures.c (bfd_arch_get_compatible): If one arch is unknown, 

return the other arch.
	* elfcode.h (elf_object_p): Allow explicit match to generic ELF
	target.
This commit is contained in:
Alan Modra 2011-06-04 04:07:54 +00:00
parent f973cbf1c6
commit d50ec8a7e1
3 changed files with 45 additions and 36 deletions
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7
bfd/ChangeLog
View File

@ -1,3 +1,10 @@
2011-06-04 Alan Modra <amodra@gmail.com>
* archures.c (bfd_arch_get_compatible): If one arch is unknown,
return the other arch.
* elfcode.h (elf_object_p): Allow explicit match to generic ELF
target.
2011-06-03 Bertram Felgenhauer <bertram.felgenhauer@gmail.com>
PR ld/12682

35
bfd/archures.c
View File

@ -1,6 +1,6 @@
/* BFD library support routines for architectures.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
@ -748,25 +748,26 @@ bfd_arch_get_compatible (const bfd *abfd,
const bfd *bbfd,
bfd_boolean accept_unknowns)
{
const bfd * ubfd = NULL;
const bfd *ubfd, *kbfd;
/* Look for an unknown architecture. */
if (((ubfd = abfd) && ubfd->arch_info->arch == bfd_arch_unknown)
|| ((ubfd = bbfd) && ubfd->arch_info->arch == bfd_arch_unknown))
{
/* We can allow an unknown architecture if accept_unknowns
is true, or if the target is the "binary" format, which
has an unknown architecture. Since the binary format can
only be set by explicit request from the user, it is safe
to assume that they know what they are doing. */
if (accept_unknowns
|| strcmp (bfd_get_target (ubfd), "binary") == 0)
return ubfd->arch_info;
return NULL;
}
if (abfd->arch_info->arch == bfd_arch_unknown)
ubfd = abfd, kbfd = bbfd;
else if (bbfd->arch_info->arch == bfd_arch_unknown)
ubfd = bbfd, kbfd = abfd;
else
/* Otherwise architecture-specific code has to decide. */
return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
/* Otherwise architecture-specific code has to decide. */
return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
/* We can allow an unknown architecture if accept_unknowns
is true, or if the target is the "binary" format, which
has an unknown architecture. Since the binary format can
only be set by explicit request from the user, it is safe
to assume that they know what they are doing. */
if (accept_unknowns
|| strcmp (bfd_get_target (ubfd), "binary") == 0)
return kbfd->arch_info;
return NULL;
}
/*

39
bfd/elfcode.h
View File

@ -595,26 +595,27 @@ elf_object_p (bfd *abfd)
/* This is the generic ELF target. Let it match any ELF target
for which we do not have a specific backend. */
for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
{
const struct elf_backend_data *back;
if (abfd->target_defaulted)
for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
{
const struct elf_backend_data *back;
if ((*target_ptr)->flavour != bfd_target_elf_flavour)
continue;
back = xvec_get_elf_backend_data (*target_ptr);
if (back->s->arch_size != ARCH_SIZE)
continue;
if (back->elf_machine_code == i_ehdrp->e_machine
|| (back->elf_machine_alt1 != 0
&& back->elf_machine_alt1 == i_ehdrp->e_machine)
|| (back->elf_machine_alt2 != 0
&& back->elf_machine_alt2 == i_ehdrp->e_machine))
{
/* target_ptr is an ELF backend which matches this
object file, so reject the generic ELF target. */
goto got_wrong_format_error;
}
}
if ((*target_ptr)->flavour != bfd_target_elf_flavour)
continue;
back = xvec_get_elf_backend_data (*target_ptr);
if (back->s->arch_size != ARCH_SIZE)
continue;
if (back->elf_machine_code == i_ehdrp->e_machine
|| (back->elf_machine_alt1 != 0
&& back->elf_machine_alt1 == i_ehdrp->e_machine)
|| (back->elf_machine_alt2 != 0
&& back->elf_machine_alt2 == i_ehdrp->e_machine))
{
/* target_ptr is an ELF backend which matches this
object file, so reject the generic ELF target. */
goto got_wrong_format_error;
}
}
}
if (i_ehdrp->e_type == ET_EXEC)