binutils-gdb/bfd/elfxx-target.h

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/* Target definitions for NN-bit ELF
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This structure contains everything that BFD knows about a target.
It includes things like its byte order, name, what routines to call
to do various operations, etc. Every BFD points to a target structure
with its "xvec" member.
There are two such structures here: one for big-endian machines and
one for little-endian machines. */
#define bfd_elfNN_close_and_cleanup _bfd_elf_close_and_cleanup
#define bfd_elfNN_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
#ifndef bfd_elfNN_get_section_contents
#define bfd_elfNN_get_section_contents _bfd_generic_get_section_contents
#endif
#define bfd_elfNN_canonicalize_dynamic_symtab _bfd_elf_canonicalize_dynamic_symtab
#define bfd_elfNN_canonicalize_reloc _bfd_elf_canonicalize_reloc
#ifndef bfd_elfNN_find_nearest_line
#define bfd_elfNN_find_nearest_line _bfd_elf_find_nearest_line
#endif
#define bfd_elfNN_read_minisymbols _bfd_elf_read_minisymbols
#define bfd_elfNN_minisymbol_to_symbol _bfd_elf_minisymbol_to_symbol
#define bfd_elfNN_get_dynamic_symtab_upper_bound _bfd_elf_get_dynamic_symtab_upper_bound
#define bfd_elfNN_get_lineno _bfd_elf_get_lineno
#ifndef bfd_elfNN_get_reloc_upper_bound
#define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
#endif
#define bfd_elfNN_get_symbol_info _bfd_elf_get_symbol_info
#define bfd_elfNN_get_symtab _bfd_elf_get_symtab
#define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
#if 0 /* done in elf-bfd.h */
#define bfd_elfNN_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
#endif
#define bfd_elfNN_make_empty_symbol _bfd_elf_make_empty_symbol
#define bfd_elfNN_new_section_hook _bfd_elf_new_section_hook
#define bfd_elfNN_set_arch_mach _bfd_elf_set_arch_mach
#ifndef bfd_elfNN_set_section_contents
#define bfd_elfNN_set_section_contents _bfd_elf_set_section_contents
#endif
#define bfd_elfNN_sizeof_headers _bfd_elf_sizeof_headers
#define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
#define bfd_elfNN_write_corefile_contents _bfd_elf_write_corefile_contents
#define bfd_elfNN_get_section_contents_in_window \
_bfd_generic_get_section_contents_in_window
#ifndef elf_backend_got_symbol_offset
#define elf_backend_got_symbol_offset (bfd_vma) 0
#endif
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#ifndef elf_backend_can_refcount
#define elf_backend_can_refcount 0
#endif
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#ifndef elf_backend_want_got_plt
#define elf_backend_want_got_plt 0
#endif
#ifndef elf_backend_plt_readonly
#define elf_backend_plt_readonly 0
#endif
#ifndef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 0
#endif
#ifndef elf_backend_plt_not_loaded
#define elf_backend_plt_not_loaded 0
#endif
#ifndef elf_backend_plt_alignment
#define elf_backend_plt_alignment 2
#endif
#ifndef elf_backend_want_dynbss
#define elf_backend_want_dynbss 1
#endif
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#define bfd_elfNN_bfd_debug_info_start bfd_void
#define bfd_elfNN_bfd_debug_info_end bfd_void
#define bfd_elfNN_bfd_debug_info_accumulate \
(void (*) PARAMS ((bfd*, struct sec *))) bfd_void
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#ifndef bfd_elfNN_bfd_get_relocated_section_contents
#define bfd_elfNN_bfd_get_relocated_section_contents \
bfd_generic_get_relocated_section_contents
#endif
#ifndef bfd_elfNN_bfd_relax_section
#define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
#endif
#ifndef elf_backend_can_gc_sections
#define elf_backend_can_gc_sections 0
#endif
* elf-bfd.h (struct elf_link_local_dynamic_entry): Add init_refcount. (struct elf_backend_data): Add can_refcount. * elf.c (_bfd_elf_link_hash_newfunc): Get rid of a few casts. Set got.refcount and plt.refcount from init_refcount. (_bfd_elf_link_hash_table_init): Set up init_refcount. (_bfd_elf_link_hash_copy_indirect): Reference got/plt.refcount rather than got/plt.offset, and test for <= 0 rather than -1. * elflink.h (size_dynamic_sections): Set init_refcount to -1. * elfxx-target.h (elf_backend_can_refcount): Define. (elfNN_bed): Init can_refcount. * linker.c (_bfd_link_hash_newfunc): Get rid of a few casts. (_bfd_generic_link_hash_newfunc): Likewise. * elf32-cris.c (cris_elf_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-hppa.c (elf32_hppa_check_relocs): Modify for refcounts starting from zero. (elf32_hppa_copy_indirect_symbol): Make static to agree with prototype. (elf_backend_can_refcount): Define. * elf32-i386.c (elf_i386_check_relocs): Modify for refcounts starting from zero. (allocate_dynrelocs): Set plt/got.offset rather than *.refcount. (elf_i386_finish_dynamic_symbol): Expand SHN_UNDEF comment. (elf_i386_finish_dynamic_sections): Use local var so line < 80 chars. (elf_backend_can_refcount): Define. (elf_i386_copy_indirect_symbol): Make static to agree with prototype. Formatting fix. * elf32-m68k.c (elf_m68k_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-ppc.c (ppc_elf_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-s390.c (elf_s390_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf64-s390.c (elf_s390_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf64-x86-64.c (elf64_x86_64_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define.
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#ifndef elf_backend_can_refcount
#define elf_backend_can_refcount 0
#endif
#ifndef elf_backend_want_got_sym
#define elf_backend_want_got_sym 1
#endif
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#ifndef elf_backend_gc_mark_hook
#define elf_backend_gc_mark_hook NULL
#endif
#ifndef elf_backend_gc_sweep_hook
#define elf_backend_gc_sweep_hook NULL
#endif
#ifndef bfd_elfNN_bfd_gc_sections
#define bfd_elfNN_bfd_gc_sections _bfd_elfNN_gc_sections
#endif
* merge.c (struct sec_merge_hash_entry): Add u.entsize and u.suffix fields, change sec into secinfo. (struct sec_merge_info): Add chain, remove last fields. (struct sec_merge_sec_info): Add next, sec, psecinfo fields. (sec_merge_hash_lookup): If lookup could not use a string only because it has bad alignment, mark the old string for deletion. (sec_merge_add): Add secinfo argument. Don't compute entry's position, instead record the section. (sec_merge_emit): Update for the sec into secinfo change in struct sec_merge_hash_entry. (_bfd_merge_section): Only record the section for merging, defer putting strings into the hash table. (cmplengthentry, last4_eq, last_eq, record_section, merge_strings, _bfd_merge_sections): New functions. (_bfd_merged_section_offset): Update for the sec_merge_hash_entry changes. * libbfd-in.h (_bfd_merge_sections): Add prototype. (_bfd_nolink_bfd_merge_sections): Define. * libbfd.h: Likewise. (bfd_generic_merge_sections): Add prototype. * targets.c (BFD_JUMP_TABLE_LINK): Add _bfd_merge_sections. (struct bfd_target): Likewise. * bfd.c (bfd_merge_sections): Define. * bfd-in2.h: Rebuilt. * elf.c (_bfd_elf_merge_sections): New function. * elf-bfd.h (_bfd_elf_merge_sections): Add prototype. * elfxx-target.h (bfd_elfNN_bfd_merge_sections): Define. * reloc.c (bfd_generic_merge_sections): New function. * vms.c (vms_bfd_merge_sections): New function. * aout-adobe.c (aout_32_bfd_merge_sections): Define. * aout-target.h (MY_bfd_merge_sections): Define. * aout-tic30.c (MY_bfd_merge_sections): Define. * binary.c (binary_bfd_merge_sections): Define. * bout.c (b_out_bfd_merge_sections): Define. * coff-alpha.c (_bfd_ecoff_bfd_merge_sections): Define. * coffcode.c (coff_bfd_merge_sections): Define. * coff-mips.c (_bfd_ecoff_bfd_merge_sections): Define. * i386msdos.c (msdos_bfd_merge_sections): Define. * i386os9k.c (os9k_bfd_merge_sections): Define. * ieee.c (ieee_bfd_merge_sections): Define. * ihex.c (ihex_bfd_merge_sections): Define. * nlm-target.h (nlm_bfd_merge_sections): Define. * oasys.c (oasys_bfd_merge_sections): Define. * ppcboot.c (ppcboot_bfd_merge_sections): Define. * som.c (som_bfd_merge_sections): Define. * srec.c (srec_bfd_merge_sections): Define. * tekhex.c (tekhex_bfd_merge_sections): Define. * versados.c (versados_bfd_merge_sections): Define. * xcoff-target.h (_bfd_xcoff_bfd_merge_sections): Define. * ldlang.c (lang_process): Call bfd_merge_sections.
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#ifndef bfd_elfNN_bfd_merge_sections
#define bfd_elfNN_bfd_merge_sections \
_bfd_elf_merge_sections
#endif
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#ifndef bfd_elfNN_bfd_make_debug_symbol
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#define bfd_elfNN_bfd_make_debug_symbol \
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
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#endif
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#ifndef bfd_elfNN_bfd_copy_private_symbol_data
#define bfd_elfNN_bfd_copy_private_symbol_data \
_bfd_elf_copy_private_symbol_data
#endif
#ifndef bfd_elfNN_bfd_copy_private_section_data
#define bfd_elfNN_bfd_copy_private_section_data \
_bfd_elf_copy_private_section_data
#endif
#ifndef bfd_elfNN_bfd_copy_private_bfd_data
#define bfd_elfNN_bfd_copy_private_bfd_data \
_bfd_elf_copy_private_bfd_data
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#endif
#ifndef bfd_elfNN_bfd_print_private_bfd_data
#define bfd_elfNN_bfd_print_private_bfd_data \
_bfd_elf_print_private_bfd_data
#endif
#ifndef bfd_elfNN_bfd_merge_private_bfd_data
#define bfd_elfNN_bfd_merge_private_bfd_data \
((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
#endif
#ifndef bfd_elfNN_bfd_set_private_flags
#define bfd_elfNN_bfd_set_private_flags \
((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
#endif
#ifndef bfd_elfNN_bfd_is_local_label_name
#define bfd_elfNN_bfd_is_local_label_name _bfd_elf_is_local_label_name
#endif
#ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
#define bfd_elfNN_get_dynamic_reloc_upper_bound \
_bfd_elf_get_dynamic_reloc_upper_bound
#endif
#ifndef bfd_elfNN_canonicalize_dynamic_reloc
#define bfd_elfNN_canonicalize_dynamic_reloc \
_bfd_elf_canonicalize_dynamic_reloc
#endif
#ifdef elf_backend_relocate_section
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#ifndef bfd_elfNN_bfd_link_hash_table_create
#define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
#endif
#else /* ! defined (elf_backend_relocate_section) */
/* If no backend relocate_section routine, use the generic linker.
Note - this will prevent the port from being able to use some of
the other features of the ELF linker, because the generic hash structure
does not have the fields needed by the ELF linker. In particular it
means that linking directly to S-records will not work. */
#ifndef bfd_elfNN_bfd_link_hash_table_create
#define bfd_elfNN_bfd_link_hash_table_create \
_bfd_generic_link_hash_table_create
#endif
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#ifndef bfd_elfNN_bfd_link_add_symbols
#define bfd_elfNN_bfd_link_add_symbols _bfd_generic_link_add_symbols
#endif
#ifndef bfd_elfNN_bfd_final_link
#define bfd_elfNN_bfd_final_link _bfd_generic_final_link
#endif
#endif /* ! defined (elf_backend_relocate_section) */
#ifndef bfd_elfNN_bfd_link_split_section
#define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
#endif
#ifndef bfd_elfNN_archive_p
#define bfd_elfNN_archive_p bfd_generic_archive_p
#endif
#ifndef bfd_elfNN_write_archive_contents
#define bfd_elfNN_write_archive_contents _bfd_write_archive_contents
#endif
#ifndef bfd_elfNN_mkobject
#define bfd_elfNN_mkobject bfd_elf_mkobject
#endif
#ifndef bfd_elfNN_mkcorefile
#define bfd_elfNN_mkcorefile bfd_elf_mkcorefile
#endif
#ifndef bfd_elfNN_mkarchive
#define bfd_elfNN_mkarchive _bfd_generic_mkarchive
#endif
#ifndef elf_symbol_leading_char
#define elf_symbol_leading_char 0
#endif
#ifndef elf_info_to_howto
#define elf_info_to_howto 0
#endif
#ifndef elf_info_to_howto_rel
#define elf_info_to_howto_rel 0
#endif
#ifndef ELF_MAXPAGESIZE
#error ELF_MAXPAGESIZE is not defined
#define ELF_MAXPAGESIZE 1
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#endif
#ifndef elf_backend_collect
#define elf_backend_collect false
#endif
#ifndef elf_backend_type_change_ok
#define elf_backend_type_change_ok false
#endif
#ifndef elf_backend_sym_is_global
#define elf_backend_sym_is_global 0
#endif
#ifndef elf_backend_object_p
#define elf_backend_object_p 0
#endif
#ifndef elf_backend_symbol_processing
#define elf_backend_symbol_processing 0
#endif
#ifndef elf_backend_symbol_table_processing
#define elf_backend_symbol_table_processing 0
#endif
#ifndef elf_backend_get_symbol_type
#define elf_backend_get_symbol_type 0
#endif
#ifndef elf_backend_section_processing
#define elf_backend_section_processing 0
#endif
#ifndef elf_backend_section_from_shdr
#define elf_backend_section_from_shdr 0
#endif
#ifndef elf_backend_section_flags
#define elf_backend_section_flags 0
#endif
#ifndef elf_backend_section_from_phdr
#define elf_backend_section_from_phdr 0
#endif
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#ifndef elf_backend_fake_sections
#define elf_backend_fake_sections 0
#endif
#ifndef elf_backend_section_from_bfd_section
#define elf_backend_section_from_bfd_section 0
#endif
#ifndef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook 0
#endif
#ifndef elf_backend_link_output_symbol_hook
#define elf_backend_link_output_symbol_hook 0
#endif
#ifndef elf_backend_create_dynamic_sections
#define elf_backend_create_dynamic_sections 0
#endif
#ifndef elf_backend_check_relocs
#define elf_backend_check_relocs 0
#endif
#ifndef elf_backend_adjust_dynamic_symbol
#define elf_backend_adjust_dynamic_symbol 0
#endif
#ifndef elf_backend_always_size_sections
#define elf_backend_always_size_sections 0
#endif
#ifndef elf_backend_size_dynamic_sections
#define elf_backend_size_dynamic_sections 0
#endif
#ifndef elf_backend_relocate_section
#define elf_backend_relocate_section 0
#endif
#ifndef elf_backend_finish_dynamic_symbol
#define elf_backend_finish_dynamic_symbol 0
#endif
#ifndef elf_backend_finish_dynamic_sections
#define elf_backend_finish_dynamic_sections 0
#endif
#ifndef elf_backend_begin_write_processing
#define elf_backend_begin_write_processing 0
#endif
#ifndef elf_backend_final_write_processing
#define elf_backend_final_write_processing 0
#endif
#ifndef elf_backend_additional_program_headers
#define elf_backend_additional_program_headers 0
#endif
#ifndef elf_backend_modify_segment_map
#define elf_backend_modify_segment_map 0
#endif
#ifndef elf_backend_ecoff_debug_swap
#define elf_backend_ecoff_debug_swap 0
#endif
#ifndef elf_backend_got_header_size
#define elf_backend_got_header_size 0
#endif
#ifndef elf_backend_plt_header_size
#define elf_backend_plt_header_size 0
#endif
#ifndef elf_backend_post_process_headers
#define elf_backend_post_process_headers NULL
#endif
#ifndef elf_backend_print_symbol_all
#define elf_backend_print_symbol_all NULL
#endif
#ifndef elf_backend_output_arch_syms
#define elf_backend_output_arch_syms NULL
#endif
#ifndef elf_backend_copy_indirect_symbol
#define elf_backend_copy_indirect_symbol _bfd_elf_link_hash_copy_indirect
#endif
#ifndef elf_backend_hide_symbol
#define elf_backend_hide_symbol _bfd_elf_link_hash_hide_symbol
#endif
#ifndef elf_backend_emit_relocs
#define elf_backend_emit_relocs NULL
#endif
#ifndef elf_backend_count_relocs
#define elf_backend_count_relocs NULL
#endif
#ifndef elf_backend_grok_prstatus
#define elf_backend_grok_prstatus NULL
#endif
#ifndef elf_backend_grok_psinfo
#define elf_backend_grok_psinfo NULL
#endif
#ifndef elf_backend_sprintf_vma
#define elf_backend_sprintf_vma _bfd_elf_sprintf_vma
#endif
#ifndef elf_backend_fprintf_vma
#define elf_backend_fprintf_vma _bfd_elf_fprintf_vma
#endif
* elf-bfd.h (enum elf_reloc_type_class): New. (struct elf_backend_data): Add elf_backend_reloc_type_class. (_bfd_elf_reloc_type_class): New. * elfxx-target.h (elf_backend_reloc_type_class): Define. (elfNN_bed): Add elf_backend_reloc_type_class. * elf.c (_bfd_elf_reloc_type_class): New. * elf32-i386.c (elf_i386_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (elf_i386_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (elf_i386_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elf32-sparc.c (elf32_sparc_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (elf32_sparc_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (elf32_sparc_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elf64-sparc.c (sparc64_elf_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (sparc64_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (sparc64_elf_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elfxx-ia64.c (struct elfNN_ia64_link_hash_table): Add reltext field. (elfNN_ia64_hash_table_create): Clear ia64_info. (get_reloc_section): Set DF_TEXTREL if the reloc is against read-only section. (elfNN_ia64_size_dynamic_sections): Use ia64_info->reltext flag instead of looking up section names for DT_TEXTREL. (elfNN_ia64_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elflink.h (size_dynamic_sections): Add spare DT_NULL tags. (struct elf_link_sort_rela): New. (elf_link_sort_cmp1, elf_link_sort_cmp2, elf_link_sort_relocs): New. (elf_bfd_final_link): Call elf_link_sort_relocs. Convert one spare DT_NULL into DT_RELCOUNT resp. DT_RELACOUNT if necessary. * bfdlink.h (struct bfd_link_info): Add combreloc and spare_dynamic_tags fields. * emultempl/elf32.em (place_orphan): Place orphan .rel* sections into .rel.dyn resp. .rela.dyn if combreloc. (get_script): If .x linker script is equal to .xn, only put it once into the binary. Add .xc and .xsc scripts. (parse_args): Handle -z combreloc and -z nocombreloc. * scripttempl/elf.sc (.rela.sbss): Fix a typo. For .xc and .xsc scripts put all .rel* or .rela* input sections but .rel*.plt and PLT-like sections into .rel.dyn resp. .rela.dyn. * genscripts.sh (GENERATE_COMBRELOC_SCRIPT): Set if SCRIPT_NAME is elf. Strip trailing whitespace from script. Generate .xc and .xsc scripts if requested. * ldmain.c (main): Initialize link_info.combreloc and link_info.spare_dynamic_tags. * lexsup.c (OPTION_SPARE_DYNAMIC_TAGS): Define. (ld_options): Add --spare-dynamic-tags option. (parse_args): Likewise. * ld.texinfo: Document -z combreloc and -z nocombreloc. * ldint.texinfo: Document .xc and .xsc linker scripts. * NEWS: Add notes about -z combreloc and SHF_MERGE.
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#ifndef elf_backend_reloc_type_class
#define elf_backend_reloc_type_class _bfd_elf_reloc_type_class
#endif
2001-11-11 Daniel Jacobowitz <drow@mvista.com> * bfd-in.h (bfd_elf32_discard_info): Add prototype. (bfd_elf64_discard_info): Likewise. * bfd-in2.h: Regenerate. * elf-bfd.h (struct elf_reloc_cookie): New. (struct elf_backend_data): Add elf_backend_discard_info, elf_backend_ignore_discarded_relocs, and elf_backend_write_section. (_bfd_elf32_reloc_symbol_deleted_p): Add prototype. (_bfd_elf64_reloc_symbol_deleted_p): Likewise. * elf32-mips.c (_bfd_elf32_mips_discard_info): New. (_bfd_elf32_mips_ignore_discarded_relocs): New. (_bfd_elf32_mips_write_section): New. (elf_backend_discard_info): Define. (elf_backend_ignore_discarded_relocs): Define. (elf_backend_write_section): Define. * elfcode.h (elf_bfd_discard_info): Define. (elf_reloc_symbol_deleted_p): Define. * elflink.h (elf_link_input_bfd): Check elf_section_ignore_discarded_relocs. Call bed->elf_backend_write_section if available. (elf_reloc_symbol_deleted_p): New. (elf_bfd_discard_info): New. (elf_section_ignore_discarded_relocs): New. * elfxx-target.h (elf_backend_discard_info): Define. (elf_backend_ignore_discarded_relocs): Define. (elf_backend_write_section): Define. (elfNN_bed): Add elf_backend_discard_info, elf_backend_ignore_discarded_relocs, and elf_backend_write_section. * libbfd-in.h (_bfd_discard_section_stabs): Add prototype. * libbfd.h: Regenerate. * stabs.c (_bfd_discard_section_stabs): New. 2001-11-11 Daniel Jacobowitz <drow@mvista.com> * emultempl/elf32.em (gld${EMULATION_NAME}_finish): New. (struct ld_emulation_xfer_struct): Use it.
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#ifndef elf_backend_discard_info
#define elf_backend_discard_info NULL
#endif
#ifndef elf_backend_ignore_discarded_relocs
#define elf_backend_ignore_discarded_relocs NULL
#endif
#ifndef elf_backend_write_section
#define elf_backend_write_section NULL
#endif
/* Previously, backends could only use SHT_REL or SHT_RELA relocation
sections, but not both. They defined USE_REL to indicate SHT_REL
sections, and left it undefined to indicated SHT_RELA sections.
For backwards compatibility, we still support this usage. */
#ifndef USE_REL
#define USE_REL 0
#else
#undef USE_REL
#define USE_REL 1
#endif
/* Use these in new code. */
#ifndef elf_backend_may_use_rel_p
#define elf_backend_may_use_rel_p USE_REL
#endif
#ifndef elf_backend_may_use_rela_p
#define elf_backend_may_use_rela_p !USE_REL
#endif
#ifndef elf_backend_default_use_rela_p
#define elf_backend_default_use_rela_p !USE_REL
#endif
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#ifndef ELF_MACHINE_ALT1
#define ELF_MACHINE_ALT1 0
#endif
#ifndef ELF_MACHINE_ALT2
#define ELF_MACHINE_ALT2 0
#endif
#ifndef elf_backend_size_info
#define elf_backend_size_info _bfd_elfNN_size_info
#endif
#ifndef elf_backend_sign_extend_vma
#define elf_backend_sign_extend_vma 0
#endif
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extern const struct elf_size_info _bfd_elfNN_size_info;
#ifndef INCLUDED_TARGET_FILE
static const struct elf_backend_data elfNN_bed =
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{
ELF_ARCH, /* arch */
ELF_MACHINE_CODE, /* elf_machine_code */
ELF_MAXPAGESIZE, /* maxpagesize */
elf_info_to_howto,
elf_info_to_howto_rel,
elf_backend_sym_is_global,
elf_backend_object_p,
elf_backend_symbol_processing,
elf_backend_symbol_table_processing,
elf_backend_get_symbol_type,
elf_backend_section_processing,
elf_backend_section_from_shdr,
elf_backend_section_flags,
elf_backend_section_from_phdr,
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elf_backend_fake_sections,
elf_backend_section_from_bfd_section,
elf_backend_add_symbol_hook,
elf_backend_link_output_symbol_hook,
elf_backend_create_dynamic_sections,
elf_backend_check_relocs,
elf_backend_adjust_dynamic_symbol,
elf_backend_always_size_sections,
elf_backend_size_dynamic_sections,
elf_backend_relocate_section,
elf_backend_finish_dynamic_symbol,
elf_backend_finish_dynamic_sections,
elf_backend_begin_write_processing,
elf_backend_final_write_processing,
elf_backend_additional_program_headers,
elf_backend_modify_segment_map,
elf_backend_gc_mark_hook,
elf_backend_gc_sweep_hook,
elf_backend_post_process_headers,
elf_backend_print_symbol_all,
elf_backend_output_arch_syms,
elf_backend_copy_indirect_symbol,
elf_backend_hide_symbol,
elf_backend_emit_relocs,
elf_backend_count_relocs,
elf_backend_grok_prstatus,
elf_backend_grok_psinfo,
elf_backend_sprintf_vma,
elf_backend_fprintf_vma,
* elf-bfd.h (enum elf_reloc_type_class): New. (struct elf_backend_data): Add elf_backend_reloc_type_class. (_bfd_elf_reloc_type_class): New. * elfxx-target.h (elf_backend_reloc_type_class): Define. (elfNN_bed): Add elf_backend_reloc_type_class. * elf.c (_bfd_elf_reloc_type_class): New. * elf32-i386.c (elf_i386_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (elf_i386_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (elf_i386_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elf32-sparc.c (elf32_sparc_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (elf32_sparc_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (elf32_sparc_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elf64-sparc.c (sparc64_elf_check_relocs): Set DF_TEXTREL if the reloc is against read-only section. (sparc64_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of looking up section names for DT_TEXTREL. (sparc64_elf_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elfxx-ia64.c (struct elfNN_ia64_link_hash_table): Add reltext field. (elfNN_ia64_hash_table_create): Clear ia64_info. (get_reloc_section): Set DF_TEXTREL if the reloc is against read-only section. (elfNN_ia64_size_dynamic_sections): Use ia64_info->reltext flag instead of looking up section names for DT_TEXTREL. (elfNN_ia64_reloc_type_class): New. (elf_backend_reloc_type_class): Define. * elflink.h (size_dynamic_sections): Add spare DT_NULL tags. (struct elf_link_sort_rela): New. (elf_link_sort_cmp1, elf_link_sort_cmp2, elf_link_sort_relocs): New. (elf_bfd_final_link): Call elf_link_sort_relocs. Convert one spare DT_NULL into DT_RELCOUNT resp. DT_RELACOUNT if necessary. * bfdlink.h (struct bfd_link_info): Add combreloc and spare_dynamic_tags fields. * emultempl/elf32.em (place_orphan): Place orphan .rel* sections into .rel.dyn resp. .rela.dyn if combreloc. (get_script): If .x linker script is equal to .xn, only put it once into the binary. Add .xc and .xsc scripts. (parse_args): Handle -z combreloc and -z nocombreloc. * scripttempl/elf.sc (.rela.sbss): Fix a typo. For .xc and .xsc scripts put all .rel* or .rela* input sections but .rel*.plt and PLT-like sections into .rel.dyn resp. .rela.dyn. * genscripts.sh (GENERATE_COMBRELOC_SCRIPT): Set if SCRIPT_NAME is elf. Strip trailing whitespace from script. Generate .xc and .xsc scripts if requested. * ldmain.c (main): Initialize link_info.combreloc and link_info.spare_dynamic_tags. * lexsup.c (OPTION_SPARE_DYNAMIC_TAGS): Define. (ld_options): Add --spare-dynamic-tags option. (parse_args): Likewise. * ld.texinfo: Document -z combreloc and -z nocombreloc. * ldint.texinfo: Document .xc and .xsc linker scripts. * NEWS: Add notes about -z combreloc and SHF_MERGE.
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elf_backend_reloc_type_class,
2001-11-11 Daniel Jacobowitz <drow@mvista.com> * bfd-in.h (bfd_elf32_discard_info): Add prototype. (bfd_elf64_discard_info): Likewise. * bfd-in2.h: Regenerate. * elf-bfd.h (struct elf_reloc_cookie): New. (struct elf_backend_data): Add elf_backend_discard_info, elf_backend_ignore_discarded_relocs, and elf_backend_write_section. (_bfd_elf32_reloc_symbol_deleted_p): Add prototype. (_bfd_elf64_reloc_symbol_deleted_p): Likewise. * elf32-mips.c (_bfd_elf32_mips_discard_info): New. (_bfd_elf32_mips_ignore_discarded_relocs): New. (_bfd_elf32_mips_write_section): New. (elf_backend_discard_info): Define. (elf_backend_ignore_discarded_relocs): Define. (elf_backend_write_section): Define. * elfcode.h (elf_bfd_discard_info): Define. (elf_reloc_symbol_deleted_p): Define. * elflink.h (elf_link_input_bfd): Check elf_section_ignore_discarded_relocs. Call bed->elf_backend_write_section if available. (elf_reloc_symbol_deleted_p): New. (elf_bfd_discard_info): New. (elf_section_ignore_discarded_relocs): New. * elfxx-target.h (elf_backend_discard_info): Define. (elf_backend_ignore_discarded_relocs): Define. (elf_backend_write_section): Define. (elfNN_bed): Add elf_backend_discard_info, elf_backend_ignore_discarded_relocs, and elf_backend_write_section. * libbfd-in.h (_bfd_discard_section_stabs): Add prototype. * libbfd.h: Regenerate. * stabs.c (_bfd_discard_section_stabs): New. 2001-11-11 Daniel Jacobowitz <drow@mvista.com> * emultempl/elf32.em (gld${EMULATION_NAME}_finish): New. (struct ld_emulation_xfer_struct): Use it.
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elf_backend_discard_info,
elf_backend_ignore_discarded_relocs,
elf_backend_write_section,
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elf_backend_ecoff_debug_swap,
ELF_MACHINE_ALT1,
ELF_MACHINE_ALT2,
&elf_backend_size_info,
elf_backend_got_symbol_offset,
elf_backend_got_header_size,
elf_backend_plt_header_size,
elf_backend_collect,
elf_backend_type_change_ok,
elf_backend_may_use_rel_p,
elf_backend_may_use_rela_p,
elf_backend_default_use_rela_p,
elf_backend_sign_extend_vma,
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elf_backend_want_got_plt,
elf_backend_plt_readonly,
elf_backend_want_plt_sym,
elf_backend_plt_not_loaded,
elf_backend_plt_alignment,
elf_backend_can_gc_sections,
* elf-bfd.h (struct elf_link_local_dynamic_entry): Add init_refcount. (struct elf_backend_data): Add can_refcount. * elf.c (_bfd_elf_link_hash_newfunc): Get rid of a few casts. Set got.refcount and plt.refcount from init_refcount. (_bfd_elf_link_hash_table_init): Set up init_refcount. (_bfd_elf_link_hash_copy_indirect): Reference got/plt.refcount rather than got/plt.offset, and test for <= 0 rather than -1. * elflink.h (size_dynamic_sections): Set init_refcount to -1. * elfxx-target.h (elf_backend_can_refcount): Define. (elfNN_bed): Init can_refcount. * linker.c (_bfd_link_hash_newfunc): Get rid of a few casts. (_bfd_generic_link_hash_newfunc): Likewise. * elf32-cris.c (cris_elf_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-hppa.c (elf32_hppa_check_relocs): Modify for refcounts starting from zero. (elf32_hppa_copy_indirect_symbol): Make static to agree with prototype. (elf_backend_can_refcount): Define. * elf32-i386.c (elf_i386_check_relocs): Modify for refcounts starting from zero. (allocate_dynrelocs): Set plt/got.offset rather than *.refcount. (elf_i386_finish_dynamic_symbol): Expand SHN_UNDEF comment. (elf_i386_finish_dynamic_sections): Use local var so line < 80 chars. (elf_backend_can_refcount): Define. (elf_i386_copy_indirect_symbol): Make static to agree with prototype. Formatting fix. * elf32-m68k.c (elf_m68k_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-ppc.c (ppc_elf_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf32-s390.c (elf_s390_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf64-s390.c (elf_s390_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define. * elf64-x86-64.c (elf64_x86_64_check_relocs): Modify for refcounts starting from zero. (elf_backend_can_refcount): Define.
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elf_backend_can_refcount,
elf_backend_want_got_sym,
elf_backend_want_dynbss
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};
#endif
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/* Forward declaration for use when initialising alternative_target field. */
#ifdef TARGET_LITTLE_SYM
extern const bfd_target TARGET_LITTLE_SYM;
#endif
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#ifdef TARGET_BIG_SYM
const bfd_target TARGET_BIG_SYM =
{
/* name: identify kind of target */
TARGET_BIG_NAME,
/* flavour: general indication about file */
bfd_target_elf_flavour,
/* byteorder: data is big endian */
BFD_ENDIAN_BIG,
/* header_byteorder: header is also big endian */
BFD_ENDIAN_BIG,
/* object_flags: mask of all file flags */
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
| DYNAMIC | WP_TEXT | D_PAGED),
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/* section_flags: mask of all section flags */
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY
| SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES
| SEC_ARCH_BIT_0 | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP),
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/* leading_symbol_char: is the first char of a user symbol
predictable, and if so what is it */
elf_symbol_leading_char,
/* ar_pad_char: pad character for filenames within an archive header
FIXME: this really has nothing to do with ELF, this is a characteristic
of the archiver and/or os and should be independently tunable */
'/',
/* ar_max_namelen: maximum number of characters in an archive header
FIXME: this really has nothing to do with ELF, this is a characteristic
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of the archiver and should be independently tunable. The System V ABI,
Chapter 7 (Formats & Protocols), Archive section sets this as 15. */
15,
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/* Routines to byte-swap various sized integers from the data sections */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
/* Routines to byte-swap various sized integers from the file headers */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
/* bfd_check_format: check the format of a file being read */
{ _bfd_dummy_target, /* unknown format */
bfd_elfNN_object_p, /* assembler/linker output (object file) */
bfd_elfNN_archive_p, /* an archive */
bfd_elfNN_core_file_p /* a core file */
},
/* bfd_set_format: set the format of a file being written */
{ bfd_false,
bfd_elfNN_mkobject,
bfd_elfNN_mkarchive,
bfd_elfNN_mkcorefile
},
/* bfd_write_contents: write cached information into a file being written */
{ bfd_false,
bfd_elfNN_write_object_contents,
bfd_elfNN_write_archive_contents,
bfd_elfNN_write_corefile_contents,
},
BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
BFD_JUMP_TABLE_COPY (bfd_elfNN),
BFD_JUMP_TABLE_CORE (bfd_elfNN),
#ifdef bfd_elfNN_archive_functions
BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
#else
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
#endif
BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
BFD_JUMP_TABLE_WRITE (bfd_elfNN),
BFD_JUMP_TABLE_LINK (bfd_elfNN),
BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
/* Alternative endian target. */
#ifdef TARGET_LITTLE_SYM
& TARGET_LITTLE_SYM,
#else
NULL,
#endif
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/* backend_data: */
(PTR) &elfNN_bed
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};
#endif
#ifdef TARGET_LITTLE_SYM
const bfd_target TARGET_LITTLE_SYM =
{
/* name: identify kind of target */
TARGET_LITTLE_NAME,
/* flavour: general indication about file */
bfd_target_elf_flavour,
/* byteorder: data is little endian */
BFD_ENDIAN_LITTLE,
/* header_byteorder: header is also little endian */
BFD_ENDIAN_LITTLE,
/* object_flags: mask of all file flags */
(HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS
| DYNAMIC | WP_TEXT | D_PAGED),
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/* section_flags: mask of all section flags */
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY
| SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES
| SEC_ARCH_BIT_0 | SEC_SMALL_DATA | SEC_MERGE | SEC_STRINGS | SEC_GROUP),
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/* leading_symbol_char: is the first char of a user symbol
predictable, and if so what is it */
elf_symbol_leading_char,
/* ar_pad_char: pad character for filenames within an archive header
FIXME: this really has nothing to do with ELF, this is a characteristic
of the archiver and/or os and should be independently tunable */
'/',
/* ar_max_namelen: maximum number of characters in an archive header
FIXME: this really has nothing to do with ELF, this is a characteristic
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of the archiver and should be independently tunable. The System V ABI,
Chapter 7 (Formats & Protocols), Archive section sets this as 15. */
15,
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/* Routines to byte-swap various sized integers from the data sections */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
/* Routines to byte-swap various sized integers from the file headers */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
/* bfd_check_format: check the format of a file being read */
{ _bfd_dummy_target, /* unknown format */
bfd_elfNN_object_p, /* assembler/linker output (object file) */
bfd_elfNN_archive_p, /* an archive */
bfd_elfNN_core_file_p /* a core file */
},
/* bfd_set_format: set the format of a file being written */
{ bfd_false,
bfd_elfNN_mkobject,
bfd_elfNN_mkarchive,
bfd_elfNN_mkcorefile
},
/* bfd_write_contents: write cached information into a file being written */
{ bfd_false,
bfd_elfNN_write_object_contents,
bfd_elfNN_write_archive_contents,
bfd_elfNN_write_corefile_contents,
},
BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
BFD_JUMP_TABLE_COPY (bfd_elfNN),
BFD_JUMP_TABLE_CORE (bfd_elfNN),
#ifdef bfd_elfNN_archive_functions
BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
#else
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
#endif
BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
BFD_JUMP_TABLE_WRITE (bfd_elfNN),
BFD_JUMP_TABLE_LINK (bfd_elfNN),
BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
/* Alternative endian target. */
#ifdef TARGET_BIG_SYM
& TARGET_BIG_SYM,
#else
NULL,
#endif
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/* backend_data: */
(PTR) &elfNN_bed
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};
#endif