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https://sourceware.org/git/binutils-gdb.git
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af92590521
In commitb86d3af60fand0ab0435fe6I fixed SIGBUS errors found by oss-fuzz now that --with-mmap defaults to enabled. It turns out there are further problems with the aout mmap code: aout_read_minisymbols returns the external symbol array, which is later freed by nm.c. If the array is mmaped you can't free it. Now this could be fixed by making aout minisymbols an array of pointers, but I figure there's not much point in expending effort on that. So delete the aout mmap support along with bfdwin.c and get_section_contents_in_window.
203 lines
8.1 KiB
C
203 lines
8.1 KiB
C
/* Mach-O support for BFD.
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Copyright (C) 1999-2024 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* Define generic entry points here so that we don't need to duplicate the
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defines in every target. But define once as this file may be included
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several times. */
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#ifndef MACH_O_TARGET_COMMON_DEFINED
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#define MACH_O_TARGET_COMMON_DEFINED
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#define bfd_mach_o_bfd_print_private_bfd_data bfd_mach_o_bfd_print_private_bfd_data
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#define bfd_mach_o_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
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#define bfd_mach_o_bfd_is_local_label_name bfd_generic_is_local_label_name
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#define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno
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#define bfd_mach_o_find_inliner_info _bfd_nosymbols_find_inliner_info
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#define bfd_mach_o_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
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#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
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#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
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#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
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#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
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#define bfd_mach_o_bfd_relax_section bfd_generic_relax_section
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#define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
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#define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols
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#define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms
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#define bfd_mach_o_bfd_copy_link_hash_symbol_type \
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_bfd_generic_copy_link_hash_symbol_type
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#define bfd_mach_o_bfd_final_link _bfd_generic_final_link
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#define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section
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#define bfd_mach_o_bfd_link_check_relocs _bfd_generic_link_check_relocs
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#define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
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#define bfd_mach_o_bfd_set_private_flags bfd_mach_o_bfd_set_private_flags
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#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
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#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
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#define bfd_mach_o_bfd_lookup_section_flags bfd_generic_lookup_section_flags
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#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
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#define bfd_mach_o_bfd_is_group_section bfd_generic_is_group_section
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#define bfd_mach_o_bfd_group_name bfd_generic_group_name
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#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
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#define bfd_mach_o_section_already_linked _bfd_generic_section_already_linked
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#define bfd_mach_o_bfd_define_common_symbol bfd_generic_define_common_symbol
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#define bfd_mach_o_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
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#define bfd_mach_o_bfd_define_start_stop bfd_generic_define_start_stop
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#define bfd_mach_o_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
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#define bfd_mach_o_core_file_matches_executable_p generic_core_file_matches_executable_p
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#define bfd_mach_o_core_file_pid _bfd_nocore_core_file_pid
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#define bfd_mach_o_set_reloc _bfd_generic_set_reloc
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#define bfd_mach_o_get_dynamic_symtab_upper_bound bfd_mach_o_get_symtab_upper_bound
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#define bfd_mach_o_canonicalize_dynamic_symtab bfd_mach_o_canonicalize_symtab
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/* For Mach-O special archives. */
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#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
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#define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
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#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
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#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
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#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
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#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
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#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
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#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
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#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
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#define bfd_mach_o_init_private_section_data _bfd_generic_init_private_section_data
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#define TARGET_NAME_BACKEND XCONCAT2(TARGET_NAME,_backend)
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#endif /* MACH_O_TARGET_COMMON_DEFINED */
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#ifndef TARGET_NAME
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#error TARGET_NAME must be defined
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#endif /* TARGET_NAME */
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#ifndef TARGET_STRING
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#error TARGET_STRING must be defined
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#endif /* TARGET_STRING */
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#ifndef TARGET_ARCHITECTURE
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#error TARGET_ARCHITECTURE must be defined
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#endif /* TARGET_ARCHITECTURE */
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#ifndef TARGET_BIG_ENDIAN
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#error TARGET_BIG_ENDIAN must be defined
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#endif /* TARGET_BIG_ENDIAN */
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#ifndef TARGET_ARCHIVE
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#error TARGET_ARCHIVE must be defined
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#endif /* TARGET_ARCHIVE */
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#ifndef TARGET_PAGESIZE
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#error TARGET_PAGESIZE must be defined
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#endif
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static const bfd_mach_o_backend_data TARGET_NAME_BACKEND =
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{
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TARGET_ARCHITECTURE,
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TARGET_PAGESIZE,
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bfd_mach_o_canonicalize_one_reloc,
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bfd_mach_o_swap_reloc_out,
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bfd_mach_o_print_thread,
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bfd_mach_o_tgt_seg_table,
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bfd_mach_o_section_type_valid_for_tgt
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};
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const bfd_target TARGET_NAME =
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{
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TARGET_STRING, /* Name. */
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bfd_target_mach_o_flavour,
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#if TARGET_BIG_ENDIAN
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BFD_ENDIAN_BIG, /* Target byte order. */
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BFD_ENDIAN_BIG, /* Target headers byte order. */
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#else
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BFD_ENDIAN_LITTLE, /* Target byte order. */
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BFD_ENDIAN_LITTLE, /* Target headers byte order. */
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#endif
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(HAS_RELOC | EXEC_P | /* Object flags. */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
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| SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
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'_', /* symbol_leading_char. */
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' ', /* ar_pad_char. */
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16, /* ar_max_namelen. */
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TARGET_PRIORITY, /* match priority. */
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TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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#if TARGET_BIG_ENDIAN
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Hdrs. */
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#else
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
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#endif /* TARGET_BIG_ENDIAN */
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{ /* bfd_check_format. */
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#if TARGET_ARCHIVE
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_bfd_dummy_target,
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_bfd_dummy_target,
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bfd_mach_o_archive_p,
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_bfd_dummy_target,
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#else
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_bfd_dummy_target,
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bfd_mach_o_object_p,
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bfd_generic_archive_p,
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bfd_mach_o_core_p
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#endif
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},
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{ /* bfd_set_format. */
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_bfd_bool_bfd_false_error,
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bfd_mach_o_mkobject,
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_bfd_generic_mkarchive,
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bfd_mach_o_mkobject,
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},
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{ /* bfd_write_contents. */
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_bfd_bool_bfd_false_error,
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bfd_mach_o_write_contents,
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_bfd_write_archive_contents,
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bfd_mach_o_write_contents,
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},
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BFD_JUMP_TABLE_GENERIC (bfd_mach_o),
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BFD_JUMP_TABLE_COPY (bfd_mach_o),
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BFD_JUMP_TABLE_CORE (bfd_mach_o),
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#if TARGET_ARCHIVE
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BFD_JUMP_TABLE_ARCHIVE (bfd_mach_o),
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#else
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BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44),
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#endif
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BFD_JUMP_TABLE_SYMBOLS (bfd_mach_o),
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BFD_JUMP_TABLE_RELOCS (bfd_mach_o),
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BFD_JUMP_TABLE_WRITE (bfd_mach_o),
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BFD_JUMP_TABLE_LINK (bfd_mach_o),
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BFD_JUMP_TABLE_DYNAMIC (bfd_mach_o),
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/* Alternative endian target. */
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NULL,
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/* Back-end data. */
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&TARGET_NAME_BACKEND
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};
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