+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.
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;
}
}
+ 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
+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
/* 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;
+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.
-*- 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
@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
OPTION_WARN_UNRESOLVED_SYMBOLS,
OPTION_ERROR_UNRESOLVED_SYMBOLS,
OPTION_WARN_SHARED_TEXTREL,
+ OPTION_WARN_ALTERNATE_EM,
OPTION_REDUCE_MEMORY_OVERHEADS,
OPTION_DEFAULT_SCRIPT
};
{ {"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 },
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;