Commit Graph

91 Commits

Author SHA1 Message Date
Ken Raeburn
4c0322704f * cofflink.c (_bfd_coff_final_link): Cast argument to bfd_h_put_32 to correct
type.
(coff_read_string_table): Cast argument to bfd_h_get_32 to correct type.
* elfcode.h (elf_link_output_extsym): Cast argument to bfd_elf_hash to correct
type.
1994-10-10 20:38:06 +00:00
Ian Lance Taylor
fb562be02f * elfcode.h (elf_bfd_final_link): Remove assertion when a non
SEC_IN_MEMORY section is found in dynobj.  This can happen when
	linking PIC compiled code.
1994-09-30 17:13:08 +00:00
Ken Raeburn
64e21e0fd7 * elf.c (bfd_elf_print_symbol): Moved here from elf_print_symbol in elfcode.h.
(case bfd_print_symbol_all): Print symbol's size field, except for common
symbols; print their alignment.
* elfcode.h (elf_print_symbol): Deleted.
* libelf.h (bfd_elf_print_symbol): Declare.
(bfd_elf{32,64}_print_symbol): Replace declarations with macros.
1994-09-29 20:36:24 +00:00
Ian Lance Taylor
0d9e139762 tipo 1994-09-26 02:48:36 +00:00
Ian Lance Taylor
57b400818d * elfcode.h (map_program_segments): Don't abort if we allocated
too much space for the program header, only if we allocated too
	little.
1994-09-23 19:19:41 +00:00
Ian Lance Taylor
3c9832f89f * elfcode.h (swap_out_syms): Set the type of an undefined symbol
to STT_FUNC if the BSF_FUNCTION flag is set.
1994-09-12 22:16:27 +00:00
Ian Lance Taylor
0822b56d66 * elfcode.h (NAME(bfd_elf,size_dynamic_sections)): Add soname
argument, and use it to set DT_SONAME dynamic entry.
	* bfd-in.h (bfd_elf32_size_dynamic_sections): Update prototype.
	(bfd_elf64_size_dynamic_sections): Update prototype.
	* bfd-in2.h: Rebuilt.
1994-08-30 16:04:40 +00:00
Ian Lance Taylor
823609fe90 * elfcode.h (bfd_section_from_shdr): If a SHT_SYMTAB section in a
shared object has SHF_ALLOC set, create a BFD section for it.
	(elf_section_from_bfd_section): There may be a BFD section for a
	SHT_SYMTAB section.
1994-08-15 18:08:13 +00:00
Ian Lance Taylor
e9227b4255 * elfcode.h (section_from_elf_index): Correct check for invalid
section index.
1994-08-12 23:25:23 +00:00
Ian Lance Taylor
1c640609d8 * elfcode.h (elf_link_add_object_symbols): If there is no symbol
table, try using the dynamic symbol table.  From Eric Youngdale
	<ericy@cais.cais.com>.
1994-08-12 15:51:09 +00:00
Jean Marie Diaz
df9e066f4b * elfcode.h (map_program_segments): Check DYNAMIC as well as EXEC_P.
(assign_file_positions_except_relocs): Likewise.
1994-08-01 23:37:22 +00:00
Jean Marie Diaz
99dd775492 ELF linker patches from Eric Youngdale <ericy@cais.cais.com>.
* elfcode.h (elf_link_create_dynamic_sections): Set type of
	_DYNAMIC to STT_OBJECT.
	(NAME(bfd_elf,record_link_assignment)): Always create hash table
	entry.  Set type to STT_OBJECT.
	(elf_link_output_extsym): Don't set type of weak defined symbol to
	STB_WEAK if symbol was referenced.
	* elf32-i386.c (elf_i386_create_dynamic_sections): Set type of
	_GLOBAL_OFFSET_TABLE to STT_OBJECT.
	(elf_i386_check_relocs): Ignore local PLT32 relocs.
	(elf_i386_relocate_section): Treat local PLT32 relocs as PC32.
1994-08-01 23:11:18 +00:00
Ian Lance Taylor
30e5ad97e9 * elfcode.h (elf_adjust_dynamic_symbol): Correct weak symbol
handling again.
1994-08-01 20:53:48 +00:00
Ian Lance Taylor
d510fd893a * elfcode.h (elf_slurp_reloc_table): Don't try to read the relocs
if there aren't any.
1994-08-01 16:34:09 +00:00
Ian Lance Taylor
374d2ef905 Add support for creating shared libraries under i386 ELF and SPARC
ELF.  Based on patches by Eric Youngdale <ericy@cais.cais.com>.
	* libelf.h (struct elf_link_hash_entry): Remove copy_offset field.
	Add got_offset and plt_offset fields.
	(ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE): Don't define.
	(ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE): Don't define.
	(ELF_LINK_HASH_NEEDS_COPY): Define.
	(struct elf_backend_data): Add check_relocs field.
	(struct bfd_elf_section_data): Change relocs from PTR to
	Elf_Internal_Rela *.
	(struct elf_obj_tdata): Add local_got_offsets field.
	(elf_local_got_offsets): Define accessor macro.
	(bfd_elf32_link_create_dynamic_sections): Declare.
	(bfd_elf32_link_record_dynamic_symbol): Declare.
	(bfd_elf64_link_create_dynamic_sections): Declare.
	(bfd_elf64_link_record_dynamic_symbol): Declare.
	* elfcode.h (elf_slurp_reloc_table): Don't use the section data
	relocs field.
	(elf_link_record_dynamic_symbol): Make globally visible.  Use
	macro to rename to NAME(bfd_elf,link_record_dynamic_symbol).
	(elf_link_add_object_symbols): If creating a shared library, put
	make all local symbols dynamic.  Don't bother with the
	DYNAMIC_MULTIPLE flags.  Call the check_relocs backend function if
	it is defined.
	(elf_link_create_dynamic_sections): Make globally visible.  Use
	macro to rename to NAME(bfd_elf,link_create_dynamic_sections).  If
	creating a shared library, make sure that _DYNAMIC is added as a
	dynamic symbol.
	(elf_link_read_relocs): New function.
	(NAME(bfd_elf,record_link_assignment)): If creating a shared
	library, always create symbols, and always make them dynamic.
	(elf_bfd_final_link): Permit creation of shared libraries.
	(elf_link_input_bfd): Use elf_link_read_relocs to get the relocs.
	* elf.c (_bfd_elf_link_hash_newfunc): Don't initialize
	copy_offset.  Initialize got_offset and plt_offset.
	* elf32-target.h (elf_backend_check_relocs): Define as 0 if not
	defined.
	(elf32_bed): Initialize check_relocs field.
	* elf64-target.h (elf_backend_check_relocs): Define as 0 if not
	defined.
	(elf64_bed): Initialize check_relocs field.
	* elf32-i386.c (elf_howto_table): Change R_386_PLT32 and
	R_386_GOTPC to be pc_relative and pcrel_offset.
	(elf_i386_pic_plt0_entry): Define.
	(elf_i386_pic_plt_entry): Define.
	(elf_i386_create_dynamic_sections): Create a .got.plt section, and
	define _GLOBAL_OFFSET_TABLE_ at the start of it.  If creating a
	shared library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a
	dynamic symbol.  Don't create .rel.bss if creating a shared
	library.
	(elf_i386_check_relocs): New function.
	(elf_i386_adjust_dynamic_symbol): Don't make a PLT entry if the
	symbol already has one.  When making a PLT entry, set plt_offset.
	Don't create a copy reloc when creating a shared library.  Don't
	set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY.
	(elf_i386_allocate_dynamic_section): Remove.
	(elf_i386_size_dynamic_sections): Look through all the sections
	rather than assuming we know their names.  Remove any empty reloc
	or plt sections.  Only add a DT_DEBUG entry if not creating a
	shared library.  Only add a DT_PLTGOT entry if there is a PLT.
	Add a DT_TEXTREL entry if required.
	(elf_i386_relocate_section): Permit undefined symbols when
	creating a shared library.  Handle the special relocation types
	specially.
	(elf_i386_finish_dynamic_symbol): Create a PLT entry if plt_offset
	is set.  If creating a shared library, produce a PIC PLT entry.
	Only mark a PLT symbol as undefined if it was not defined by a
	regular object file.  Create a GOT entry if got_offset is set.
	Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set.
	(elf_i386_finish_dynamic_sections): Change the handling of
	DT_RELSZ to simply subtract out the size of .rel.plt.  If creating
	a shared library, produce PIC PLT code.
	(elf_backend_check_relocs): Define.
	* elf32-sparc.c (elf_sparc_howto_table): Change R_SPARC_GOT10,
	R_SPARC_GOT22, and R_SPARC_PC10 to not warn about reloc overflow.
	(elf32_sparc_create_dynamic_sections): If creating a shared
	library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a
        dynamic symbol, and set the type to STT_OBJECT.  Likewise for
        _PROCEDURE_LINKAGE_TABLE_.  Don't create .rel.bss if creating a
        shared library.
	(elf32_sparc_check_relocs): New function.
	(elf32_sparc_adjust_dynamic_symbol): Don't make a PLT entry if the
	symbol already has one.  When making a PLT entry, set plt_offset.
	Don't create a copy reloc when creating a shared library.  Don't
	set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY.
	(elf32_sparc_allocate_dynamic_section): Remove.
	(elf32_sparc_size_dynamic_sections): Look through all the sections
	rather than assuming we know their names.  Only add a DT_DEBUG
	entry if not creating a shared library.  Add a DT_TEXTREL entry if
	required.
	(elf32_sparc_relocate_section): Permit undefined symbols when
	creating a shared library.  Handle the special relocation types
	specially.
	(elf32_sparc_finish_dynamic_symbol): Create a PLT entry if plt_offset
	is set.  Only mark a PLT symbol as undefined if it was not defined
	by a regular object file.  Create a GOT entry if got_offset is
	set.  Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set.
	(elf32_sparc_finish_dynamic_sections): Store dynobj in a local
	variable.
	(elf_backend_check_relocs): Define.
1994-07-26 17:18:37 +00:00
Ian Lance Taylor
7c6da9cade * aoutx.h (aout_link_check_ar_symbols): When changing a symbol to
common, set the alignment.
	(aout_link_add_symbols): Restrict the alignment of a common symbol
	to the alignment power given by the architecture.
	* elf.c (_bfd_elf_link_hash_newfunc): Don't initialize align.  Do
	initialize copy_offset.
	* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Use copy_offset
	field rather than align field.  Get alignment using bfd_log2
	rather than switch.
	* elf32-sparc.c (elf32_sparc_adjust_dynamic_symbol): Likewise.
	* elf32-i386.c (elf_i386_finish_dynamic_symbol): Use copy_offset,
	not align.
	* elf32-sparc.c (elf32_sparc_finish_dynamic_symbol): Likewise.
1994-07-22 18:53:23 +00:00
Ian Lance Taylor
f9779aad5a * elfcode.h (NAME(bfd_elf,size_dynamic_sections)): Add rpath
argument.  If it is not NULL, use it to set DT_RPATH.
	* bfd-in.h (bfd_elf32_size_dynamic_sections): Update prototype.
	(bfd_elf64_size_dynamic_sections): Likewise.
	* bfd-in2.h: Rebuilt.
1994-07-20 19:51:18 +00:00
Ian Lance Taylor
bf73e4f3fe * libelf.h (ELF_LINK_HASH_DEFINED_WEAK): Define.
* elfcode.h (elf_link_add_object_symbols): If symbol is defined as
	weak, set ELF_LINK_HASH_DEFINED_WEAK.
	(elf_link_output_extsym): If symbol is defined as weak, mark it
	STB_WEAK.
1994-07-17 02:15:24 +00:00
Ian Lance Taylor
ea61717495 * libelf.h (struct bfd_elf_section_data): Add relocs field.
(shdr_name): Remove; unused.
	* elfcode.h (elf_slurp_reloc_table): Rewrote to handle both REL
	and RELA relocs.  Free up the unswapped relocs.  Permit the relocs
	to be cached in the section_data.  Correct the reloc address.
	(elf_slurp_reloca_table): Remove.
	(elf_canonicalize_reloc): Rewrote.
	(elf_link_input_bfd): Permit the relocs to be cached in the
	section data.
1994-07-17 01:15:42 +00:00
Peter Schauer
57a814a93e * aix386-core.c, aoutf1.h, cisco-core.c, elfcode.h, hppabsd-core.c,
hpux-core.c, irix-core.c, lynx-core.c, osf-core.c, ptrace-core.c,
	rs6000-core.c, trad-core.c:  Remove SEC_ALLOC flag from .reg
	sections, .reg sections are not allocated and contain debug
	information only.
	* osf-core.c (make_bfd_asection, osf_core_core_file_p):  Use
	bfd_make_section_anyway instead of building unique section names.
1994-07-12 19:14:09 +00:00
Ian Lance Taylor
71edd06df7 * elfcode.h (swap_out_syms): Get alignment of common symbol from
st_value field of saved ELF symbol information, if there is any.
1994-07-05 18:05:03 +00:00
Ian Lance Taylor
8af74670df Preliminary support for generating shared libraries, from Eric
Youngdale <ericy@cais.cais.com>.
	* elfcode.h (prep_headers): If DYNAMIC, set e_type to ET_DYN.
	(elf_link_add_object_symbols): If generating a shared library,
	create dynamic sections for first input BFD with the right format.
	(elf_link_create_dynamic_sections): Don't create .interp section
	if creating a shared library.
	(elf_link_input_bfd): Skip dynamic sections in input file.
	(elf_bfd_final_link): If creating a shared library, it's OK for
	dynobj to have sections which are not SEC_IN_MEMORY.
	* elf32-i386.c (elf_i386_size_dynamic_sections): Only set .interp
	section if not creating a shared library.
	* elf32-sparc.c (elf_sparc_size_dynamic_sections): Likewise.
1994-06-23 21:36:03 +00:00
Ian Lance Taylor
51fc377bab * elfcode.h (elf_object_p): Don't set DYNAMIC just because there
is an SHT_DYNAMIC section.
1994-06-23 20:14:58 +00:00
Ian Lance Taylor
badd23e323 * section.c (bfd_abs_section): Make const.
(bfd_abs_section_ptr, bfd_is_abs_section): Define.
	(bfd_und_section): Make const.
	(bfd_und_section_ptr, bfd_is_und_section): Define.
	(bfd_com_section): Make const.
	(bfd_com_section_ptr): Define.
	(bfd_ind_section): Make const.
	(bfd_ind_section_ptr, bfd_is_ind_section): Define.
	(bfd_abs_symbol, bfd_com_symbol): Make const.
	(bfd_und_symbol, bfd_ind_symbol): Likewise.
	(global_syms): Cast initialization of section field.
	(STD_SECTION): Define as const, and cast initializations.
	* bfd-in2.h: Rebuilt.
	* Many files: Change uses of bfd_abs_section, etc., to use
	bfd_abs_section_ptr or bfd_is_abs_section, etc.
1994-06-21 16:47:07 +00:00
Ian Lance Taylor
2f3508ad05 * Many files: change all bfd_target vectors to be const. Change
all uses of bfd_target * to be const bfd_target *.  Change
	bfd_target_vector and bfd_default_vector arrays to be const
	bfd_target * const *.
1994-06-20 21:55:45 +00:00
Ian Lance Taylor
6c8fa8e62c * aoutx.h (NAME(aout,final_link)): Check flavour of sub, not abfd,
when computing reloc sizes.  From Eric Youngdale
	<ericy@cais.cais.com>.
	* elfcode.h (elf_bfd_final_link): Don't try to compute maximum
	reloc count or size for a non-ELF file.
1994-06-20 15:51:28 +00:00
Jeff Law
c46b8ed7e6 * elfcode.h (elf_link_input_bfd): Don't try to read local symbols
if there aren't any in the input file.
1994-06-17 05:39:55 +00:00
Ian Lance Taylor
0ff5d3a69a * elfcode.h (elf_bfd_final_link): If trying to generate a shared
object, warn and return false.
1994-06-16 19:30:49 +00:00
Ian Lance Taylor
c1f84521bf * libelf.h (struct elf_obj_tdata): New field dt_needed_name.
(elf_dt_needed_name): New accessor macro.
	* elfcode.h (elf_link_add_object_symbols): If elf_dt_needed_name
	is set, use that instead of the filename for the DT_NEEDED dynamic
	entry.
	* elf.c (bfd_elf_set_dt_needed_name): New function.
	* bfd-in.h (bfd_elf_set_dt_needed_name): Declare.
	* bfd-in2.h: Rebuilt.
1994-06-16 00:01:32 +00:00
Ken Raeburn
5546cc7eb6 Tweak v9 support to ready it for release. 1994-06-15 22:05:40 +00:00
Ian Lance Taylor
7c726b6625 * elfcode.h (NAME(bfd_elf,size_dynamic_sections)): Add sinterpptr
argument, and set it to the .interp section.
	* bfd-in.h (bfd_elf32_size_dynamic_sections): Update prototype.
	(bfd_elf64_size_dynamic_sections): Likewise.
	* bfd-in2.h: Rebuilt.
1994-06-15 19:58:59 +00:00
Ian Lance Taylor
e6667b2bc3 * elfcode.h (bfd_section_from_shdr): Don't turn a reloc section
into a BFD section just because SHF_ALLOC is set; require that it
	not use the normal symbol table.
	(elf_section_from_bfd_section): Corresponding change.
1994-06-06 23:59:27 +00:00
Ian Lance Taylor
fa15568ac1 Changes to support ELF strip and objcopy on dynamically linked
files.
	* elfcode.h (elf_fake_sections): Add prototype.
	(bfd_section_from_shdr): Make a BFD section from an SHT_HASH
	section, and from an SHT_DYNSYM section, and from the dynamic
	string table section.
	(elf_object_p): Set D_PAGED if there is a program header.
	(elf_make_sections): Remove.
	(fix_up_strtabs): Remove.
	(elf_fake_sections): Rewrite.  Now sets sh_entsize.
	(assign_section_numbers): Rewrite.  Now sets sh_link and sh_info
	for all sections.
	(elf_compute_section_file_positions):  Don't call obsolete
	functions elf_make_sections or fix_up_strtabs.
	(swap_out_syms): Set sh_addralign to FILE_ALIGN rather than 4.
	(NAME(bfd_elf,write_object_contents)): Permit writing DYNAMIC
	objects.
	(elf_section_from_bfd_section): Treat SHT_DYNSYM like other normal
	sections.  If an SHT_REL or SHT_RELA section is allocated or uses
	an unusual symbol table, permit a BFD section to map to it.
	Permit most SHT_STRTAB sections to have a BFD section mapped to
	them.
	(elf_bfd_final_link): Don't set sh_link, sh_info or sh_entsize
	fields of dynamic sections here; do it in assign_section_numbers.
	* elf32-target.h, elf64-target.h: Add D_PAGED to permitted object
	flags.
1994-06-05 20:00:42 +00:00
Ian Lance Taylor
5315c42827 Make MIPS ELF use new ELF backend linker. No shared library
support yet.
	* elf32-mips.c (bfd_mips_elf32_swap_gptab_in): New function.
	(bfd_mips_elf32_swap_gptab_out): New function.
	(mips_elf_object_p): If last symbol is LOCAL, set elf_bad_symtab.
	(mips_elf_final_write_processing): Set sh_info field for .gptab.*
	sections.
	(mips_elf_fake_sections): Set sh_entsize for .gptab.* sections.
	(mips_elf_read_ecoff_info): Read and free external symbols last,
	not first, for clarity.
	(struct mips_elf_link_hash_entry): Define new structure.
	(struct mips_elf_link_hash_table): Define new structure.
	(mips_elf_link_hash_lookup): Define new macro.
	(mips_elf_link_hash_traverse): Define new macro.
	(mips_elf_hash_table): Define new macro.
	(mips_elf_link_hash_newfunc): New static function.
	(mips_elf_link_hash_table_create): New static function.
	(mips_elf_add_symbol_hook): New static function.
	(struct extsym_info): Define new structure.
	(mips_elf_get_extr, mips_elf_set_index): Remove.
	(mips_elf_output_extsym): New static function.
	(gptab_compare): New static function.
	(mips_elf_final_link): Rewrite to use ELF backend linker, and to
	merge gptab information in input files.
	(mips_elf_relocate_hi16): New static function.
	(mips_elf_relocate_section): New static function.
	(bfd_elf32_bfd_link_hash_table_create): Define as macro before
	including elf32-target.h.
	(elf_backend_relocate_section): Likewise.
	(elf_backend_add_symbol_hook): Likewise.
	* elf.c (_bfd_elf_link_hash_newfunc): Rename from
	elf_link_hash_newfunc and make globally visible.  Change caller.
	(_bfd_elf_link_hash_table_init): New function, broken out of
	_bfd_elf_link_hash_table_create.
	(_bfd_elf_link_hash_table_create): Use
	_bfd_elf_link_hash_table_init.
	* libelf.h (struct elf_obj_tdata): Add new field bad_symtab.
	(elf_bad_symtab): Define new accessor macro.
	(_bfd_elf_link_hash_newfunc): Declare.
	(_bew_elf_link_hash_table_init): Declare.
	* elfcode.h (elf_object_p): Call backend object_p hook after
	swapping in all the section headers.
	(map_program_segments): Correct typo: Internal for External.
	(elf_link_add_object_symbols): If elf_bad_symtab is set, read all
	the symbols.  Skip STB_LOCAL symbols rather than giving an error.
	(elf_bfd_final_link): If elf_bad_symtab is set, allocate space for
	all symbols, not just locals.
	(elf_link_output_extsym): Only skip a symbol not mentioned by a
	regular file if it is mentioned by a dynamic object.
	(elf_link_input_bfd): If elf_bad_symtab is set, read all the
	symbols.
1994-05-24 20:44:50 +00:00
Ian Lance Taylor
497c543457 * elf.c (_bfd_elf_make_section_from_shdr): New function, based on
code repeated three times in bfd_section_from_shdr in elfcode.h.
	* libelf.h (_bfd_elf_make_section_from_shdr): Declare.
	* elfcode.h (bfd_section_from_shdr): Use new function
	_bfd_elf_make_section_from_shdr to create BFD sections.  If a
	reloc section does not use the main symbol table, or it is part of
	the process image, treat it as a normal section, not relocs.
	* elf32-mips.c (mips_elf_section_from_shdr): Use new function
	_bfd_elf_make_section_from_shdr.
1994-05-20 16:04:59 +00:00
Ian Lance Taylor
6731b89c4b Make map_program_segments tend to call abort rather than trash the
stack in unhandled cases.  Still covered by previous ChangeLog entry.
1994-05-19 21:58:45 +00:00
Ian Lance Taylor
013dec1ad9 Add support for ELF shared libraries. Loosely based on work by
Eric Youngdale <ericy@cais.com>.
	* libelf.h (struct elf_backend_data): Add new fields for dynamic
	linking: elf_backend_create_dynamic_sections,
	elf_backend_adjust_dynamic_symbol,
	elf_backend_size_dynamic_sections,
	elf_backend_finish_dynamic_symbol,
	elf_backend_finish_dynamic_sections.
	(struct elf_link_hash_entry): Change type of align field to
	bfd_size_type.  Add fields dynindx, dynstr_index, weakdef,
	elf_link_hash_flags.
	(struct elf_link_hash_table): Add fields dynobj, dynsymcount,
	dynstr, bucketcount.
	(bfd_elf32_swap_reloc_in, bfd_elf32_swap_reloc_out): Declare.
	(bfd_elf32_swap_reloca_in, bfd_elf32_swap_reloca_out): Declare.
	(bfd_elf32_swap_dyn_in, bfd_elf32_swap_dyn_out): Declare.
	(bfd_elf32_add_dynamic_entry): Declare.
	(bfd_elf64_swap_reloc_in, bfd_elf64_swap_reloc_out): Declare.
	(bfd_elf64_swap_reloca_in, bfd_elf64_swap_reloca_out): Declare.
	(bfd_elf64_swap_dyn_in, bfd_elf64_swap_dyn_out): Declare.
	(bfd_elf64_add_dynamic_entry): Declare.
	* elfcode.h (Elf_External_Dyn): Define.
	(elf_swap_reloc_in): Define as macro using NAME.  Make externally
	visible.
	(elf_swap_reloc_out): Likewise.
	(elf_swap_reloca_in, elf_swap_reloca_out): Likewise.
	(elf_swap_dyn_in, elf_swap_dyn_out): Define as macro using NAME
	and as new externally visible function.
	(elf_fake_sections): Set section type of dynamic sections based on
	section names.
	(elf_write_phdrs): Remove.
	(assign_file_position_for_section): Add new align argument.
	Change all callers.
	(get_program_header_size): New static function.
	(struct seg_info): Remove.
	(map_program_segments): Completely rewrite.
	(assign_file_positions_except_relocs): Completely rewrite.
	(assign_file_positions_for_relocs): Don't set a file position for
	sections which already have one.  Don't bother to align the file
	position here.
	(section_from_elf_index): Handle SHT_HASH and SHT_DYNAMIC
	section types.
	(elf_section_from_bfd_section): Likewise.
	(elf_slurp_symbol_table): If section_from_elf_index fails, just
	use bfd_abs_section rather than returning an error.
	(elf_sizeof_headers): Make useful.
	(elf_link_record_dynamic_symbol): New static function.
	(elf_link_add_object_symbols): Handle dynamic objects.
	(elf_link_create_dynamic_sections): New static function.
	(elf_add_dynamic_entry): Define as macro using NAME and as new
	externally visible function.
	(NAME(bfd_elf,record_link_assignment)): New function.
	(elf_buckets): New static variable.
	(NAME(bfd_elf,size_dynamic_sections)): New function.
	(struct elf_final_link_info): Add dynsym_sec and hash_sec fields.
	(elf_bfd_final_link): Handle dynamic linking.  Create a section
	symbol for all ELF sections, not all BFD sections.  Store section
	symbol index in target_index field, not index field.  Traverse
	over global symbols even if stripping.
	(elf_link_output_extsym): Output dynamic symbols.  Mark symbols
	defined by dynamic objects as undefined.
	(elf_link_input_bfd): Ignore dynamic objects.  Use target_index
	field for section relocs, and make sure it is set.
	(elf_reloc_link_order): Use target_index field for section relocs,
	and make sure it is set.
	* elf.c (elf_link_hash_newfunc): Initialize dynindx, dynstr_index,
	weakdef and elf_link_hash_flags fields.
	(_bfd_elf_link_hash_table_create): Initialize dynobj, dynsymcount,
	dynstr and bucketcount fields.
	* elf32-target.h: Initialize new dynamic linking fields.
	* elf64-target.h: Likewise.
	* elf32-i386.c: New functions for dynamic linking support.
	* elf32-sparc.c: Likewise.
	* bfd-in.h (bfd_elf32_record_link_assignment): Declare.
	(bfd_elf64_record_link_assignment): Declare.
	(bfd_elf32_size_dynamic_sections): Declare.
	(bfd_elf64_size_dynamic_sections): Declare.
	* bfd-in2.h: Rebuilt.
1994-05-19 18:23:40 +00:00
Jeff Law
459ae909b9 * bfd-in2.h: Rebuilt.
* elf32-hppa.c: Change .hppa_linker_stubs to .PARISC.stubs,
	likewise for other PA specific sections.
	(hppa_elf_relocate_unwind_table): Delete unused
	function.
	(elf_hppa_howto_table): Completely new table based on 94-02-02
	draft PA ELF spec.  Change relocation tags appropriately
	throughout elf32-hppa.c
	(hppa_elf_gen_reloc_type): Rewrite and simplify based on 94-02-02
	spec.
	(hppa_elf_reloc): Likewise.
	(hppa_look_for_stubs_in_section): Likewise
	(ELF_MACHINE_CODE): Change to EM_PARISC.
	* elf32-hppa.h: Include "elf/hppa.h".  Change relocation tags
	appropriately throughout elf32-hppa.h.
	(elf32_hppa_reloc_type): New table based on 94-02-02 draft PA ELF
	spec.
	(R_HPPA_ABS_CALL, R_HPPA_COMPLEX*, R_HPPA_UNWIND): Delete definitions.
	* elfcode.h (prep_headers): Use EM_PARISC instead of EM_HPPA.
	* reloc.c (bfd_reloc_code_real): Delete unused HPPA relocations.
	* som.h (R_HPPA_ABS_CALL, R_HPPA_COMPLEX): Delete definitions.

	* libhppa.h (hppa_field_adjust): Avoid adding constant_value into
	the final value twice for LR and RR field selectors.
1994-05-16 19:34:13 +00:00
Ian Lance Taylor
6ec3bb6a75 * elfcode.h: Include bfdlink.h. Added several new functions to do
linking.
	(ELF_R_TYPE): Define.
	(bfd_add_to_strtab): Return unsigned long.  Change check for
	realloc failure.
	(elf_fake_sections): Check return value of bfd_add_to_strtab.
	(elf_compute_section_file_positions): Add link_info argument.
	Call elf_backend_begin_write_processing hook and prep_headers
	here.  Only call swap_out_syms if link_info is NULL.  Set up
	.shstrtab section here.  Pass dosyms argument to
	assign_file_positions_except_relocs.  Set output_has_begun flag.
	(assign_file_positions_for_symtab_and_strtabs): Add dosyms
	argument, and use it to control setting .symtab and .strtab file
	positions.
	(assign_file_positions_except_relocs): Add dosyms argument, and
	pass it on.
	(prep_headers): Check return value of bfd_add_to_strtab.
	(swap_out_syms): Likewise.  Also, don't set up .shstrtab here.
	(NAME(bfd_elf,write_object_contents)): Some calls moved into
	elf_compute_section_file_positions.
	(elf_set_section_contents): Likewise.
	(elf_slurp_symbol_table): SHN_LORESERV corrected to SHN_LORESERVE.
	* libelf.h: Include bfdlink.h.
	(struct elf_backend_data): Add fields collect,
	elf_add_symbol_hook, elf_backend_relocate_section.
	(struct bfd_elf_section_data): Add field rel_hashes.
	(struct elf_obj_tdata): Remove fields internal_syms and symbols.
	Add field sym_hashes.
	(obj_symbols, obj_internal_syms): Remove definitions.
	(elf_sym_hashes): Define.
	(struct elf_link_hash_entry): Define.
	(struct elf_link_hash_table): Define.
	(elf_link_hash_lookup): Define.
	(elf_link_hash_traverse): Define.
	(elf_hash_table): Define.
	(_bfd_elf_link_hash_table_create): Declare.
	(bfd_elf32_bfd_link_add_symbols): Declare.
	(bfd_elf32_bfd_final_link): Declare.
	(bfd_elf64_bfd_link_add_symbols): Declare.
	(bfd_elf64_bfd_final_link): Declare.
	* elf.c: Include bfdlink.h.
	(elf_link_hash_newfunc): New function.
	(_bfd_elf_link_hash_table_create): New function.
	* elf32-target.h (elf_backend_relocate_section): If not defined,
	define as 0 and use generic linker.  Otherwise, use ELF backend
	linker.
	(elf_backend_collect): If not defined, define as false.
	(elf_backend_add_symbol_hook): If not defined, define as 0.
	(elf32_bed): Initialize new fields.
	* elf64-target.h: Same changes as elf32-target.h.
	* elf32-i386.c: Include bfdlink.h.
	(elf_i386_relocate_section): New function.
	(elf_backend_relocate_section): Define.
	* elf32-sparc.c: Include bfdlink.h.
	(elf_info_to_howto): Change type of dst from Elf32_Internal_Rela
	to Elf_Internal_Rela (they're the same type anyhow).
	(elf_sparc_relocate_section): New function.
	(elf_backend_relocate_section): Define.
	* elf32-mips.c (elf_backend_collect): Define.
1994-05-09 16:58:36 +00:00
Ian Lance Taylor
ba436e33cd * elfcode.h (write_relocs): Undo patch of Apr 10; breaks Solaris. 1994-04-25 19:52:15 +00:00
Ian Lance Taylor
2e03ce1861 * elfcode.h (bfd_section_from_shdr): Use bfd_make_section_anyway
to create sections.  Check return value of recursive calls.
	(bfd_section_from_phdr): Check return value of bfd_make_section.
	(elf_symbol_from_bfd_symbol): Likewise.
	(elf_object_p): Check return value of bfd_section_from_shdr.
	(section_from_elf_index): Likewise.
	(elf_slurp_symbol_table): Check return value of
	section_from_elf_index.
	(bfd_prstatus): Return boolean value.  Check return value of
	bfd_make_section.
	(bfd_fpregset): Likewise.
	(bfd_prpsinfo): Return boolean value.
	(elf_corefile_note): Check return values of bfd_prstatus,
	bfd_fpregset, and bfd_prpsinfo.
	(elf_core_file_p): Check return value of elf_corefile_note.
1994-04-25 19:36:51 +00:00
Ian Lance Taylor
80a903c960 * aout-adobe.c (aout_adobe_set_arch_mach): Check return value of
bfd_default_set_arch_mach.  Accept bfd_arch_m68k as well as
	bfd_arch_unknown.
	* elfcode.h (elf_set_arch_mach): Don't check a list of ELF
	architectures, just see if the desired architecture matches what
	the ELF backend permits.
1994-04-22 17:11:37 +00:00
Peter Schauer
cb71adf12b * libelf.h (elf_obj_tdata): Add members for dynamic symbol table
handling.
	* elfcode.h (bfd_section_from_shdr):  Handle dynamic symbol table.
	* elfcode.h (elf_slurp_symbol_table):  Take additional parameter
	to select static or dynamic symbol table and return number of
	symbols slurped or -1 on error.
	* elfcode.h (elf_get_symtab):  Set bfd symcount from
	elf_slurp_symbol_table result.
	* elfcode.h (elf_get_dynamic_symtab_upper_bound,
	elf_canonicalize_dynamic_symtab):  New functions to handle dynamic
	symbol table.
	* elf32-target.h, elf64-target.h (BFD_JUMP_TABLE_DYNAMIC):
	Change to handle dynamic symbol table, provide default definitions
	for dynamic relocs.
	* aoutx.h (howto_table_std, NAME(aout,swap_std_reloc_out),
	NAME(aout,swap_std_reloc_in), aout_link_input_section_std,
	aout_link_reloc_link_order):  Handle r_jmptable and r_relative
	relocations.
1994-04-21 17:01:12 +00:00
Ian Lance Taylor
bf08d1e266 * elfcode.h (assign_file_positions_except_relocs): Don't require
the file alignment to correspond to the page size when linking
	with -N.
1994-04-11 18:43:15 +00:00
Jeff Law
9a5334e590 * elfcode.h (write_relocs): For rela relocations, adjust the
addend for relocations involving section symbols to account
        for the lossage of 1:1 mapping from input section symbols to
        output section symbols.
1994-04-10 08:12:33 +00:00
Jeff Law
99a6c7613c * elfcode.h (elf_set_section_contents): Support calling the backend
function elf_backend_begin_write_processing when just beginning to
	write an object file.

	* libelf.h (elf_backend_begin_write_processing): Declare.

	* elf{32,64}-target.h (elf_backend_begin_write_processing): Provide
	a default definition.
	(elf{32,64}_bed): Add elf_backend_begin_write_processing.

	* elf32-hppa.h (elf_hppa_tc_symbol): Delete extern declaration.
	(elf_hppa_tc_make_sections): Likewise.

	* elf32-hppa.c (symext_chain_built): Delete.
	(symext_chain_size): Renamed from symextn_contents_real_size.
	(elf32_hppa_backend_{begin,final}_write_processing): New functions.
	(add_entry_to_symext_chain): New function.
	(hppa_elf_set_section_contents): Ignore writes to the symbol extension
	section until it's been rebuilt internally.
	(hppa_elf_get_section_contents): Symbol extension section is no
	longer special.
	(elf_backend_{begin,final}_write_processing): Define.
	(elf_hppa_tc_make_sections): Simplify now that much code has
	migrated into elf32_hppa_backend_{being,final}_write_processing.
1994-04-07 18:12:25 +00:00
Ian Lance Taylor
d909628bb7 * elfcode.h (write_shdrs_and_ehdr): Correct bfd_write check. 1994-04-05 16:27:36 +00:00
Ian Lance Taylor
b3cee0a981 * aoutx.h (NAME(aout,canonicalize_reloc)): Don't error out if
section->relocation is NULL; malloc might have returned NULL when
	given a zero size if there were no relocations.
	* bout.c (b_out_canonicalize_reloc): Likewise.
	* coffcode.h (coff_canonicalize_reloc): Likewise.
	* ecoff.c (ecoff_canonicalize_reloc): Likewise.
	* elfcode.h (elf_canonicalize_reloc): Likewise.
	* mipsbsd.c (MY(canonicalize_reloc)): Likewise.
	* i386lynx.c (NAME(lynx,canonicalize_reloc)): Likewise.
	* nlmcode.h (nlm_canonicalize_reloc): Likewise.
	* som.c (som_canonicalize_reloc): Likewise.
	* hp300hpux.c (MY(slurp_reloc_table)): Likewise.  Also, if malloc
	returns NULL, don't report an error if we asked for zero bytes.
	* i386lynx.c (NAME(lynx,slurp_reloc_table)): If malloc returns
	NULL, don't report an error if we asked for zero bytes.
	* nlmcode.h (nlm_slurp_reloc_fixups): Likewise.
1994-04-05 15:32:49 +00:00
Ian Lance Taylor
4002f18a05 Made sure that every call to bfd_read, bfd_write, and bfd_seek
checks the return value and handled bfd_error correctly.  These
	changes are not itemised.
1994-04-04 22:49:04 +00:00
Ian Lance Taylor
326e32d7ce Wed Mar 30 16:25:41 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
Changes to let BFD return an error indication from
	get_symtab_upper_bound, bfd_canonicalize_symtab,
	bfd_get_reloc_upper_bound, and bfd_canonicalize_reloc.  They now
	return long instead of unsigned int, and use -1 to indicate an
	error.  Along the way, rename get_symtab_upper_bound to
	bfd_get_symtab_upper_bound.
	* bfd.c (bfd_get_reloc_upper_bound): Return long, and -1 on
	errors.
	(bfd_canonicalize_reloc): Likewise.
	* syms.c (bfd_get_symtab_upper_bound): Renamed from
	get_symtab_upper_bound.
	* targets.c (bfd_target): Renamed _get_symtab_upper_bound to
	_bfd_get_symtab_upper_bound, and changed it and
	_bfd_canonicalize_symtab and _get_reloc_upper_bound and
	_bfd_canonicalize_reloc to all return long.
	* aoutx.h (NAME(aout,get_symtab)): Return long, and -1 on errors.
	(NAME(aout,canonicalize_reloc)): Likewise.
	(NAME(aout,get_reloc_upper_bound)): Likewise.
	(NAME(aout,get_symtab_upper_bound)): Likewise.
	* bout.c (b_out_canonicalize_reloc): Likewise.
	(b_out_get_reloc_upper_bound): Likewise.
	* coffcode.h (coff_canonicalize_reloc): Likewise.
	* coffgen.c (coff_get_symtab_upper_bound): Likewise.
	(coff_get_symtab): Likewise.
	(coff_get_reloc_upper_bound): Likewise.
	* ecoff.c (ecoff_get_symtab_upper_bound): Likewise.
	(ecoff_get_symtab): Likewise.
	(ecoff_canonicalize_reloc): Likewise.
	* elfcode.h (elf_get_symtab_upper_bound): Likewise.
	(elf_get_reloc_upper_bound): Likewise.
	(elf_canonicalize_reloc): Likewise.
	(elf_get_symtab): Likewise.
	* hp300hpux.c (MY(get_symtab)): Likewise.
	(MY(get_symtab_upper_bound)): Likewise.
	(MY(canonicalize_reloc)): Likewise.
	* i386lynx.c (NAME(lynx,canonicalize_reloc)): Likewise.
	* ieee.c (ieee_slurp_external_symbols): Change return type to
	boolean.  Check for errors from get_symbol.
	(ieee_slurp_symbol_table): Change return type to boolean.  Check
	for errors from ieee_slurp_external_symbols.
	(ieee_get_symtab_upper_bound): Return long, and -1 on errors.
	(ieee_get_symtab): Likewise.
	(ieee_get_reloc_upper_bound): Likewise.
	(ieee_canonicalize_reloc): Likewise.
	* mipsbsd.c (MY(canonicalize_reloc)): Likewise.
	* nlmcode.h (nlm_get_symtab_upper_bound): Likewise.
	(nlm_get_symtab): Likewise.
	(nlm_get_reloc_upper_bound): Likewise.
	(nlm_canonicalize_reloc): Likewise.
	* oasys.c (oasys_get_symtab_upper_bound): Likewise.
	(oasys_get_symtab): Likewise.
	(oasys_get_reloc_upper_bound): Likewise.
	(oasys_canonicalize_reloc): Likewise.
	* som.c (som_get_symtab_upper_bound): Likewise.
	(som_get_symtab): Likewise.
	(som_get_reloc_upper_bound): Likewise.
	(som_canonicalize_reloc): Likewise.
	* srec.c (srec_get_symtab_upper_bound): Likewise.
	(srec_get_symtab): Likewise.
	(srec_get_reloc_upper_bound): Define as bfd_0l.
	(srec_canonicalize_reloc): Likewise.
	* tekhex.c (tekhex_get_symtab): Return long, and -1 on errors.
	(tekhex_get_symtab_upper_bound): Likewise.
	(tekhex_get_reloc_upper_bound): Define as bfd_0l.
	(tekhex_canonicalize_reloc): Likewise.
	* libaout.h (NAME(aout,get_symtab_upper_bound)): Change
	declaration to return long.
	(NAME(aout,get_symtab)): Likewise.
	(NAME(aout,canonicalize_reloc)): Likewise.
	(NAME(aout,get_reloc_upper_bound)): Likewise.
	* libcoff-in.h (coff_get_symtab_upper_bound): Likewise.
	(coff_get_symtab): Likewise.
	(coff_get_reloc_upper_bound): Likewise.
	* libecoff.h (ecoff_get_symtab_upper_bound): Likewise.
	(ecoff_get_symtab): Likewise.
	(ecoff_canonicalize_reloc): Likewise.
	* libelf.h (bfd_elf32_get_symtab_upper_bound): Likewise.
	(bfd_elf32_get_symtab): Likewise.
	(bfd_elf32_get_reloc_upper_bound): Likewise.
	(bfd_elf32_canonicalize_reloc): Likewise.
	(bfd_elf64_get_symtab_upper_bound): Likewise.
	(bfd_elf64_get_symtab): Likewise.
	(bfd_elf64_get_reloc_upper_bound): Likewise.
	(bfd_elf64_canonicalize_reloc): Likewise.
	* libnlm.h (nlmNAME(get_symtab_upper_bound)): Likewise.
	(nlmNAME(get_symtab)): Likewise.
	(nlmNAME(get_reloc_upper_bound)): Likewise.
	(nlmNAME(canonicalize_reloc)): Likewise.
	* archive.c (compute_and_write_armap): Use error_return and
	no_memory_return labels rather than freeing information in various
	places.  Change storage, symcount and src_count to long.  Check
	errors from bfd_get_symtab_upper_bound and
	bfd_canonicalize_symtab.
	* bout.c (b_out_relax_section): Change reloc_size to long.  Check
	for errors from bfd_get_reloc_upper_bound and
	bfd_canonicalize_reloc.
	(b_out_get_relocated_section_contents): Likewise.
	* coff-alpha.c (alpha_ecoff_get_relocated_section_contents):
	Likewise.
	* elf32-mips.c: Likewise.
	* elf32-hppa.c (hppa_elf_stub_finish): Likewise.
	(hppa_look_for_stubs_in_section): Check for errors from
	bfd_get_symtab_upper_bound, bfd_canonicalize_symtab, and
	bfd_canonicalize_reloc.
	* ecofflink.c (bfd_ecoff_debug_accumulate_other): Check for errors
	from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab.
	* linker.c (generic_link_read_symbols): Likewise.
	(_bfd_generic_final_link): Check for errors from
	bfd_get_reloc_upper_bound and bfd_canonicalize_reloc.
	* reloc.c (bfd_generic_get_relocated_section_contents): Likewise.
	* reloc16.c (bfd_coff_reloc16_relax_section): Likewise.
	(bfd_coff_reloc16_get_relocated_section_contents): Likewise.
	* libbfd.c (bfd_0l): New function.
	* libbfd-in.h (bfd_0l): Declare.
	* aix386-core.c: Change get_symtab_upper_bound, get_symtab,
	get_reloc_upper_bound, and canonicalize_reloc to use bfd_0l rather
	than bfd_0u.
	* cisco-core.c, hppabsd-core.c, hpux-core.c: Likewise.
	* irix-core.c, osf-core.c, ptrace-core.c, trad-core.c: Likewise.
	* bfd-in2.h: Rebuilt.
	* libbfd.h: Rebuilt.
	* libcoff.h: Rebuilt.

	* nlm32-sparc.c (nlm_sparc_read_reloc): Remove unused variables
	temp and name.
1994-03-30 22:15:07 +00:00