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bfd/ 

2009-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* elflink.c (elf_link_add_object_symbols): Warn alternate ELF
	machine code.

include/

2009-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* bfdlink.h (bfd_link_info): Add warn_alternate_em.

ld/

2009-04-08  H.J. Lu  <hongjiu.lu@intel.com>

	* lexsup.c (option_values): Add OPTION_WARN_ALTERNATE_EM.
	(ld_options): Likewise.
	(parse_args): Likewise.

	* ld.texinfo: Document --warn-alternate-em.

	* NEWS: Mention --warn-alternate-em.
This commit is contained in:
H.J. Lu 2009-04-08 16:04:50 +00:00
parent 143260c9bf
commit a0c402a564
8 changed files with 48 additions and 0 deletions
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5
bfd/ChangeLog
View File

@ -1,3 +1,8 @@
2009-04-08 H.J. Lu <hongjiu.lu@intel.com>
* elflink.c (elf_link_add_object_symbols): Warn alternate ELF
machine code.
2009-04-07 DJ Delorie <dj@redhat.com>
* archures.c: Add bfd_mach_mep_c5.

12
bfd/elflink.c
View File

@ -3425,6 +3425,7 @@ _bfd_elf_relocs_compatible (const bfd_target *input,
static bfd_boolean
elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
{
Elf_Internal_Ehdr *ehdr;
Elf_Internal_Shdr *hdr;
bfd_size_type symcount;
bfd_size_type extsymcount;
@ -3480,6 +3481,17 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
}
}
ehdr = elf_elfheader (abfd);
if (info->warn_alternate_em
&& bed->elf_machine_code != ehdr->e_machine
&& ((bed->elf_machine_alt1 != 0
&& ehdr->e_machine == bed->elf_machine_alt1)
|| (bed->elf_machine_alt2 != 0
&& ehdr->e_machine == bed->elf_machine_alt2)))
info->callbacks->einfo
(_("%P: alternate ELF machine code found (%d) in %B, expecting %d\n"),
ehdr->e_machine, abfd, bed->elf_machine_code);
/* As a GNU extension, any input sections which are named
.gnu.warning.SYMBOL are treated as warning symbols for the given
symbol. This differs from .gnu.warning sections, which generate

4
include/ChangeLog
View File

@ -1,3 +1,7 @@
2009-04-08 H.J. Lu <hongjiu.lu@intel.com>
* bfdlink.h (bfd_link_info): Add warn_alternate_em.
2009-03-18 Alan Modra <amodra@bigpond.net.au>
* alloca-conf.h: Revise based on autoconf-2.61, autoconf-2.13

3
include/bfdlink.h
View File

@ -322,6 +322,9 @@ struct bfd_link_info
/* TRUE if we should warn when adding a DT_TEXTREL to a shared object. */
unsigned int warn_shared_textrel: 1;
/* TRUE if we should warn alternate ELF machine code. */
unsigned int warn_alternate_em: 1;
/* TRUE if unreferenced sections should be removed. */
unsigned int gc_sections: 1;

10
ld/ChangeLog
View File

@ -1,3 +1,13 @@
2009-04-08 H.J. Lu <hongjiu.lu@intel.com>
* lexsup.c (option_values): Add OPTION_WARN_ALTERNATE_EM.
(ld_options): Likewise.
(parse_args): Likewise.
* ld.texinfo: Document --warn-alternate-em.
* NEWS: Mention --warn-alternate-em.
2009-04-07 DJ Delorie <dj@redhat.com>
* emulparams/elf32mep.sh: Change default endian to little.

3
ld/NEWS
View File

@ -1,5 +1,8 @@
-*- text -*-
* ELF: --warn-alternate-em option to warn if an object has alternate
ELF machine code.
* New script function REGION_ALIAS to add alias names to memory regions.
* PE targets no longer make use of the long section names PE extension to

4
ld/ld.texinfo
View File

@ -1941,6 +1941,10 @@ the section (@pxref{SECTIONS}).
@item --warn-shared-textrel
Warn if the linker adds a DT_TEXTREL to a shared object.
@kindex --warn-alternate-em
@item --warn-alternate-em
Warn if an object has alternate ELF machine code.
@kindex --warn-unresolved-symbols
@item --warn-unresolved-symbols
If the linker is going to report an unresolved symbol (see the option

7
ld/lexsup.c
View File

@ -163,6 +163,7 @@ enum option_values
OPTION_WARN_UNRESOLVED_SYMBOLS,
OPTION_ERROR_UNRESOLVED_SYMBOLS,
OPTION_WARN_SHARED_TEXTREL,
OPTION_WARN_ALTERNATE_EM,
OPTION_REDUCE_MEMORY_OVERHEADS,
OPTION_DEFAULT_SCRIPT
};
@ -555,6 +556,9 @@ static const struct ld_option ld_options[] =
{ {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
'\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
TWO_DASHES },
{ {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
'\0', NULL, N_("Warn if an object has alternate ELF machine code"),
TWO_DASHES },
{ {"warn-unresolved-symbols", no_argument, NULL,
OPTION_WARN_UNRESOLVED_SYMBOLS},
'\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
@ -1359,6 +1363,9 @@ parse_args (unsigned argc, char **argv)
case OPTION_WARN_SHARED_TEXTREL:
link_info.warn_shared_textrel = TRUE;
break;
case OPTION_WARN_ALTERNATE_EM:
link_info.warn_alternate_em = TRUE;
break;
case OPTION_WHOLE_ARCHIVE:
whole_archive = TRUE;
break;