dynamic symbol override a common symbol. Don't change the size or
type if they have been set and the new symbol is not a definition.
Warn if the size or type changes.
* Makefile.in (BFD32_BACKENDS): Remove coff-arm.o.
* archures.c (bfd_arch_info_type): Change mach field from long to
unsigned long.
(bfd_lookup_arch): Change machine parameter from long to unsigned
long.
* elflink.h (elf_bfd_final_link): Don't change a DT_INIT or
DT_FINI entry if the appropriate symbol is not in the hash table.
* libelf.h (struct elf_backend_data): Add create_program_headers
and want_hdr_in_seg fields.
* elfxx-target.h (elf_backend_want_hdr_in_seg): Define if not
defined.
(elf_backend_create_program_headers): Likewise.
(elfNN_bed): Initialize create_program_headers and
want_hdr_in_seg.
* elf.c (get_program_header_size): Call create_program_headers
backend routine.
(map_program_segments): Check want_hdr_in_seg backend field. Call
create_program_headers backend routine.
* elf.c (assign_file_positions_except_relocs): Align non allocated
sections when creating an executable.
* elfcode.h (elf_swap_phdr_in): Make non static.
(elf_swap_phdr_out): Make non static.
* libelf.h (bfd_elf32_swap_phdr_in): Declare.
(bfd_elf32_swap_phdr_out): Declare.
(bfd_elf64_swap_phdr_in): Declare.
(bfd_elf64_swap_phdr_out): Declare.
warning symbols. If any section is named .gnu.warning.XXX, treat
the contents as a warning to be issued if the symbol XXX is
referenced.
(elf_link_output_extsym): For an indirect or warning symbol, just
output the symbol it points to.
undefined weak reference, change the type to undefined.
* elflink.h (elf_link_add_archive_symbols): Don't record an
undefined weak reference as defined, in case it turns into a real
undefined reference later in the same archive.
definition, add it to the dynamic symbol table if any dynamic
object mentions it. If we do add it, make sure we add the
corresponding real symbol.
(elf_adjust_dynamic_symbol): Adjust a weak defined symbol which we
put in the dynamic symbol table, even if no regular object refers
to it.
* elf32-i386.c (elf_i386_check_relocs): When creating a shared
library, don't allocate space for a PC relative reloc against a
local symbol.
* elf32-m68k.c (elf_m68k_check_relocs): Likewise.
* elf32-sparc.c (elf32_sparc_check_relocs): Likewise.
* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Change assertion
to accept symbol with weakdef set.
* elf32-m68k.c (elf_m68k_adjust_dynamic_symbol): Likewise.
* elf32-sparc.c (elf32_sparc_adjust_dynamic_symbol): Likewise.
* elf32-m68k.c (elf_m68k_relocate_section): When creating a shared
libary, don't copy over a PC relative reloc against a local
symbol.
* elf32-sparc.c (elf32_sparc_relocate_section): Likewise.
PR 7711.
* elflink.h (NAME(bfd_elf,size_dynamic_sections)): If -Bsymbolic,
output a DT_SYMBOLIC dynamic entry.
(elf_adjust_dynamic_symbol): If -Bsymbolic, don't require a PLT
entry for a locally defined symbol.
* elf32-i386.c (elf_i386_relocate_section): If -Bsymbolic, do warn
about undefined symbols, and fill in the GOT entry for a symbol
defined in a regular object file.
(elf_i386_finish_dynamic_symbol): If -Bsymbolic, output a RELATIVE
reloc rather than a GLOB_DAT reloc for a symbol defined in a
regular object file.
* elf32-m68k.c (elf_m68k_relocate_section): If -Bsymbolic, do warn
about undefined symbols, and fill in the GOT entry for a symbol
defined in a regular object file.
(elf_m68k_finish_dynamic_symbol): If -Bsymbolic, output a RELATIVE
reloc rather than a GLOB_DAT reloc for a symbol defined in a
regular object file.
* elf32-sparc.c (elf32_sparc_relocate_section): If -Bsymbolic, do
warn about undefined symbols, and fill in the GOT entry for a
symbol defined in a regular object file.
(elf32_sparc_finish_dynamic_symbol): If -Bsymbolic, output a
RELATIVE reloc rather than a GLOB_DAT reloc for a symbol defined
in a regular object file.
Moved some mostly size-independent stuff from elfcode.h to elf.c, adding a data
structure to elfcode.h with some misc data and callback functions. Added a
pointer to that structure to the target back end data. More work can be done
here.
Renamed generic elf routines (not cpu-specific stuff) to start with bfd_elf or
_bfd_elf. Updated most call sites, sometimes defined some macros.
Moved some dynamic linking support code from m68k, sparc, i386 to common files,
using target back end flags to control behavior. More work can probably be
done here too.
Moved core- and linker-support code out of elfcode.h to elf.c, elfcore.h,
elflink.h, or elflink.c. Now elfcode.h contains only .o and executable
support, plus #includes of elfcore.h and elflink.h. Much of the contents of
these other header files can probably still be moved from the .h files to the
.c files, to get compiled only once.
Cleaned up some "gcc -Wall" warnings regarding unused or uninitialized
variables, in generic and cpu-specific code.
Ian Lance Taylor
Ken Raeburn