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40 commits

Author SHA1 Message Date
Ian Lance Taylor
1726b8f0a4 Optimize linking of stabs in sections as used in ELF and COFF.
* stabs.c: New file.
	* libbfd-in.h (_bfd_link_section_stabs): Declare.
	(_bfd_write_section_stabs): Declare.
	(_bfd_write_stab_strings): Declare.
	* libbfd.h: Rebuild.
	* libcoff-in.h (struct coff_section_tdata): Add stab_info field.
	(struct coff_link_hash_table): Add stab_info field.
	* libcoff.h: Rebuild.
	* cofflink.c (_bfd_coff_link_hash_table_init): Initialize
	stab_info field.
	(coff_link_add_symbols): Call _bfd_link_section_stabs if
	appropriate.
	(_bfd_coff_final_link): Write out stab strings hash table.
	(_bfd_coff_link_input_bfd): Handle optimized stabs sections.
	* coff-ppc.c (ppc_bfd_coff_final_link): Write out stab strings
	hash table.
	* elf-bfd.h (struct elf_link_hash_table): Add stab_info field.
	(struct bfd_elf_section_data): Add stab_info field.
	* elf.c (_bfd_elf_link_hash_table_init): Initialize stab_info
	field.
	* elflink.h (elf_link_add_object_symbols): If appropriate, call
	_bfd_link_section_stabs.
	(elf_bfd_final_link): Write out stab strings hash table.
	(elf_link_input_bfd): Handle optimized stabs sections.
	* reloc.c (_bfd_final_link_relocate): Check address against
	_raw_size rather than _cooked_size.
	* Makefile.in: Rebuild dependencies.
	(BFD_LIBS): Add stabs.o
	(BFD_LIBS_CFILES): Add stabs.c.
1996-04-22 22:35:53 +00:00
Ian Lance Taylor
ce6a773183 * elflink.h (elf_adjust_dynamic_symbol): If a common symbol got
defined in a regular file, set ELF_LINK_HASH_DEF_REGULAR.
1996-04-01 17:42:59 +00:00
Ian Lance Taylor
ff0e4a9341 Remove SEC_LINKER_MARK, and add a linker_mark bitfield to the asection
structure instead.
1996-03-27 22:23:18 +00:00
Ian Lance Taylor
7ec49f9133 * section.c (SEC_LINKER_MARK): Define.
* bfd-in2.h: Rebuild.
	* aoutx.h (NAME(aout,final_link)): Mark sections included in the
	link.
	(aout_link_input_bfd): Don't link unmarked sections.
	* cofflink.c (_bfd_coff_final_link): Mark sections included in the
	link.
	(_bfd_coff_link_input_bfd): Don't link unmarked sections.
	* coff-ppc.c (ppc_bfd_coff_final_link): Mark sections included in
	the link.
	* elflink.h (elf_bfd_final_link): Mark sections included in the
	link.
	(elf_link_input_bfd): Don't link unmarked sections.
	* xcofflink.c (_bfd_xcoff_bfd_final_link): Mark sections included
	in the link.
	(xcoff_link_input_bfd): Don't link unmarked sections.
1996-03-27 19:21:19 +00:00
Ian Lance Taylor
8881b321e0 * linker.c (bfd_wrapped_link_hash_lookup): New function.
(_bfd_generic_link_add_one_symbol): Remove BFD_ASSERT on hash
	table string.  Use bfd_wrapped_link_hash_lookup.
	(_bfd_generic_link_write_global_symbol): Remove BFD_ASSERT on hash
	table string.
	* aoutx.h (aout_link_write_symbols): Use the name from the hash
	table, if any, when writing out symbols.
	(aout_link_input_section_std): Use the name from the hash table,
	if any, when reporting undefined symbols.
	(aout_link_input_section_ext): Likewise.
	(aout_link_reloc_link_order): Use bfd_wrapped_link_hash_lookup.
	* bout.c (get_value): Likewise.
	* cofflink.c (_bfd_coff_reloc_link_order): Likewise.
	* ecoff.c (ecoff_reloc_link_order): Likewise.
	* elflink.h (elf_link_add_object_symbols): Likewise.
	(elf_reloc_link_order): Likewise.
	* linker.c (_bfd_generic_link_output_symbols): Likewise.
	(_bfd_generic_reloc_link_order): Likewise.
	(default_indirect_link_order): Likewise.
	* reloc16.c (bfd_coff_reloc16_get_value): Likewise.
	* sunos.c (sunos_add_one_symbol): Likewise.
	* xcofflink.c (xcoff_link_add_symbols): Likewise.
	(bfd_xcoff_link_count_reloc): Likewise.
	(xcoff_reloc_link_order): Likewise.
1996-03-12 23:14:58 +00:00
Ian Lance Taylor
60a49e7f8a * elf-bfd.h (struct elf_obj_tdata): Rename dt_needed_name to
dt_name.
	(elf_dt_name): Rename from elf_dt_needed_name.
	* elf.c (bfd_elf_set_dt_needed_name): Use elf_dt_name, not
	elf_dt_needed_name.
	(bfd_elf_get_dt_soname): New function.
	* elflink.h (elf_link_add_object_symbols): Use elf_dt_name, not
	elf_dt_needed_name.  Save the SONAME back in elf_dt_name.
	* bfd-in.h (bfd_elf_get_dt_soname): Declare.
	* bfd-in2.h: Rebuild.
1996-02-19 17:41:04 +00:00
Ian Lance Taylor
e303e2e358 * elflink.h (elf_adjust_dynamic_symbol): Don't try to get the
flavour of a section with no owner.
1996-02-05 15:47:53 +00:00
Ian Lance Taylor
869b7d80d3 * elf-bfd.h (ELF_LINK_NON_ELF): Define.
* elf.c (_bfd_elf_link_hash_newfunc): Set elf_link_hash_flags to
	ELF_LINK_NON_ELF.
	* elflink.h (elf_link_add_object_symbols): Reset ELF_LINK_NON_ELF
	flag for a newly defined symbol.
	(NAME(bfd_elf,record_link_assignment)): Likewise.
	(elf_adjust_dynamic_symbol): If ELF_LINK_NON_ELF is set, try to
	set the DEF or REF_REGULAR flags correctly.
1996-02-01 23:15:23 +00:00
Ian Lance Taylor
28c16b5525 * elflink.h (elf_bfd_final_link): Don't output initial dummy
symbol or section symbols if stripping all symbols and this is not
	a relocateable link.  Don't output the symbol string table if
	there are no symbols.
	(elf_link_flush_output_syms): Don't do anything if there are no
	symbols to flush.
1996-01-31 21:22:02 +00:00
Ian Lance Taylor
d2bb6c7900 * elflink.h (elf_link_add_object_symbols): Only set weakdef to a
real defined symbol, not to a weak defined symbol.
1996-01-29 18:09:20 +00:00
Michael Meissner
eb82bc605f Add more eabi relocations 1996-01-25 17:15:24 +00:00
Michael Meissner
05f927dd46 Make 64k .sdata and .sdata2 sections work; fix typos 1996-01-22 23:55:25 +00:00
David Edelsohn
5a5bac6471 * elflink.h (elf_finish_pointer_linker_section): Fix typo. 1996-01-22 18:17:16 +00:00
Michael Meissner
3b3753b874 snapshot of eabi relocation support. 1996-01-22 16:43:35 +00:00
Ian Lance Taylor
6014cea70c update copyrights 1996-01-15 21:06:31 +00:00
Ian Lance Taylor
252239f877 * elf32-mips.c: Numerous changes to dynamic linking code, mostly
from Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>.
	* elflink.h (elf_link_output_extsym): Remove special check for
	_rld_new_interface.
1996-01-15 20:25:53 +00:00
Ian Lance Taylor
5b3b9ff61d * elf32-mips.c: Extensive changes for a start at dynamic linking
support, from Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>.

	* elf-bfd.h (struct elf_backend_data): Add type_change_ok field.
	(struct elf_backend_data): Remove
	elf_backend_create_program_headers field.  Add
	elf_backend_additional_program_headers and
	elf_backend_modify_segment_map fields.
	* elfxx-target.h (elf_backend_type_change_ok): Define if not
	defined.
	(elf_backend_additional_program_headers): Likewise.
	(elf_backend_modify_segment_map): Likewise.
	(elf_backend_create_program_headers): Don't define.
	(elfNN_bed): Change to account for field changes.
	* elf.c (assign_file_positions_for_segments): Call new
	modify_segment_map backend function.  Don't call old
	create_program_headers backend function.
	(get_program_header_size): Call additional_program_headers rather
	than create_program_headers.
	* elflink.h (elf_link_add_object_symbols): Initialize
	type_change_ok from new backend field.
	(elf_link_output_extsym): Don't warn if _rld_new_interface is
	defined.
	(elf_reloc_link_order): Treat a reloc against a defined symbol as
	a reloc against the appropriate section.
1996-01-11 21:06:42 +00:00
Ian Lance Taylor
010d9f2d13 * elflink.h (elf_link_add_object_symbols): Set section_count to 0
when setting sections to NULL.
PR 8600.
1995-12-08 22:47:28 +00:00
Ian Lance Taylor
1f4ae0d6b1 * elflink.h (elf_link_output_extsym): Just ignore warning and
indirect references to symbols which don't really exist.
1995-12-04 16:23:36 +00:00
Ian Lance Taylor
58142f101d * libbfd.c (bfd_malloc, bfd_realloc): New functions.
(bfd_zmalloc): Return PTR, not char *.  Take size_t, not
	bfd_size_type.
	* libbfd-in.h (bfd_malloc, bfd_realloc): Declare.
	(bfd_zmalloc): Change declaration.
	* libbfd.h: Rebuild.
	* Many files: Use bfd_malloc and bfd_realloc rather than malloc
	and realloc.  Don't set bfd_error_no_memory if they fail.
1995-12-01 19:48:10 +00:00
Ian Lance Taylor
a9713b91a7 * opncls.c (bfd_alloc_by_size_t): Set bfd_error_no_memory if
obstack_alloc fails.
	(bfd_alloc_finish): Set bfd_error_no_memory if obstack_finish
	fails.
	* libbfd.c (bfd_zmalloc): Set bfd_error_no_memory if malloc fails.
	* Many files: don't set bfd_error_no_memory if one of the above
	routines fails.
1995-11-29 22:05:37 +00:00
Ian Lance Taylor
73a684473d * elflink.h (NAME(bfd_elf,size_dynamic_sections)): Only create
DT_INIT and DT_FINI entries if the _init or _fini symbol is
	defined or mentioned in a regular file.
PR 8462.
1995-11-17 15:05:44 +00:00
Ian Lance Taylor
ab276dfa72 comment fix 1995-11-15 01:14:26 +00:00
Ian Lance Taylor
54406786f0 * bfd-in.h (struct bfd_link_needed_list): Rename from
bfd_elf_link_needed_list.
	* bfd-in2.h: Rebuild.
	* elf.c, elflink.h, libelf.h: Corresponding changes.
1995-10-16 23:10:56 +00:00
Ian Lance Taylor
ee9f09cd26 * elflink.h (elf_link_add_object_symbols): Correct conditions
under which type and size change warnings are issued.
1995-10-11 04:50:20 +00:00
Ian Lance Taylor
8235c11240 * elflink.h (elf_link_add_object_symbols): Don't warn about
changing the size or type if the old definition was weak.
1995-10-10 05:30:17 +00:00
Ian Lance Taylor
3d7c42c988 * elflink.h (elf_link_add_object_symbols): Don't let a weak
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.
1995-10-02 18:11:12 +00:00
Ian Lance Taylor
ae115e5114 Extensive minor changes to avoid various gcc warnings. Also:
* 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.
1995-09-12 16:23:25 +00:00
Ian Lance Taylor
d6f672b881 Fri Sep 1 15:18:50 1995 Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>
* 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.
1995-09-01 19:29:43 +00:00
Ian Lance Taylor
0cb705689d * elflink.h (elf_link_add_object_symbols): Handle indirect and
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.
1995-09-01 18:08:28 +00:00
Ian Lance Taylor
68807a39e4 * linker.c (link_action): If an undefined reference follows an
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.
1995-08-21 15:12:34 +00:00
Ian Lance Taylor
452a5efbaf * elflink.h (elf_link_add_object_symbols): If a symbol is a weak
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.
1995-08-14 15:57:17 +00:00
Ian Lance Taylor
3fe22b980b * aoutx.h (NAME(aout,slurp_reloc_table)): Cast argument to size_t
for malloc.
	* coff-mips.c (mips_relocate_section): Likewise, for memmove.
	(mips_relax_section): Likewise, for malloc.
	* cofflink.c (process_embedded_commands): Likewise.
	(_bfd_coff_final_link): Likewise.
	* ecoff.c (_bfd_ecoff_write_object_contents): Likewise.
	(ecoff_final_link_debug_accumulate): Likewise.
	(ecoff_indirect_link_order): Likewise, for memcpy and malloc.
	(ecoff_reloc_link_order): Likewise, for malloc.
	* ecofflink.c (ecoff_align_debug): Likewise, for memset.
	(ecoff_write_symhdr): Likewise, for malloc.
	* elf32-hppa.c (elf32_hppa_read_symext_info): Likewise.
	* elf.c (assign_file_positions_except_relocs): Likewise, for
	qsort.
	* elf32-mips.c (mips_elf_read_ecoff_info): Likewise, for malloc.
	* elfcode.h (elf_slurp_reloc_table): Likewise.
	* elfcore.h (elf_corefile_note): Likewise.
	* elflink.h (elf_link_add_object_symbols): Likewise.
	(elf_link_read_relocs): Likewise.
	(NAME(bfd_elf,size_dynamic_sections)): Likewise, for memset.
	* i386linux.c (bfd_linux_size_dynamic_sections): Likewise.
	* ieee.c (do_with_relocs): Likewise.
	* linker.c (default_indirect_link_order): Likewise, for malloc.
	* nlmcode.h (nlm_object_p): Likewise.
	(nlm_write_object_contents): Likewise.
	* oasys.c (oasys_set_section_contents): Likewise, for memcpy.
	* reloc.c (bfd_generic_get_relocated_section_contents): Likewise,
	for malloc.
	* section.c (bfd_get_section_contents): Likewise, for memcpy.
	* srec.c (srec_get_section_contents): Likewise.
	(srec_set_section_contents): Likewise.
	* sunos.c (bfd_sunos_size_dynamic_sections): Likewise, for
	realloc and memset.
	(sunos_scan_relocs): Likewise, for malloc.
	(sunos_scan_dynamic_symbol): Likewise, for realloc.
	* syms.c (_bfd_generic_read_minisymbols): Likewise, for malloc.
	* versados.c (versados_get_section_contents): Likewise, for
	memcpy.
1995-07-13 18:14:45 +00:00
Ken Raeburn
b818a3257f fix some compilation warnings from sun cc 1995-07-12 22:00:57 +00:00
Ian Lance Taylor
6c481b58a6 * aoutx.h (NAME(aout,link_add_symbols)): Don't bother to check
that archives hold a.out objects.
	* cf-i386lynx.c (coff_bfd_link_add_symbols): Don't define.
	(lynx_link_add_symbols): Remove.
	* cf-m68klynx.c (coff_bfd_link_add_symbols): Don't define.
	(lynx_link_add_symbols): Remove.
	* elflink.h (elf_bfd_link_add_symbols): Don't bother to check that
	archives hold ELF objects.
1995-07-11 21:22:17 +00:00
Ian Lance Taylor
cf9fb9f243 * libelf.h (struct elf_size_info): Change type of last argument to
swap_symbol_out from char * to PTR.
	(bfd_elf32_swap_symbol_out): Update declaration.
	(bfd_elf64_swap_symbol_out): Likewise.
	* elfcode.h (elf_swap_symbol_out): Change type of cdst from char *
	to PTR.
	* elf.c (swap_out_syms): Cast to PTR, not char *, when calling
	swap_symbol_out routine.
	* elflink.h (NAME(bfd_elf,size_dynamic_sections)): Likewise.
	(elf_link_output_sym): Likewise.
	(elf_link_output_extsym): Likewise.
	* elf32-sparc.c (elf32_sparc_finish_dynamic_sections): Likewise.
1995-07-11 19:24:46 +00:00
Ian Lance Taylor
951fe66d62 Based on patches from Eric Youngdale <eric@aib.com>:
* 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.
1995-07-10 17:31:31 +00:00
Ken Raeburn
943fbd5bd5 fsf address update, but not in COPYING files 1995-07-07 22:49:42 +00:00
Ken Raeburn
8afe83bed7 copyright notices 1995-07-06 17:12:22 +00:00
Ken Raeburn
ede4eed483 Added new files elflink.c, elflink.h, elfcore.h.
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.
1995-07-06 02:22:00 +00:00