mirror of
https://github.com/darlinghq/darling-gdb.git
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2228 lines
58 KiB
C
2228 lines
58 KiB
C
/* Mach-O support for BFD.
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Copyright 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.
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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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "mach-o.h"
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libiberty.h"
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#include <ctype.h>
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#ifndef BFD_IO_FUNCS
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#define BFD_IO_FUNCS 0
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#endif
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#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
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#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_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_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
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#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
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#define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup
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#define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
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#define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook
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#define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
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#define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_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_nearest_line _bfd_nosymbols_find_nearest_line
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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_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
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#define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
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#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
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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_hash_table_free _bfd_generic_link_hash_table_free
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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_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_set_arch_mach bfd_default_set_arch_mach
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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_generic_bfd_set_private_flags
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#define bfd_mach_o_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
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#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
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#define bfd_mach_o_set_section_contents _bfd_generic_set_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_merge_sections bfd_generic_merge_sections
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#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
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static bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data
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PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
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static bfd_boolean bfd_mach_o_bfd_copy_private_section_data
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PARAMS ((bfd *, asection *, bfd *, asection *));
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static bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data
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PARAMS ((bfd *, bfd *));
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static long bfd_mach_o_count_symbols
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PARAMS ((bfd *));
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static long bfd_mach_o_get_symtab_upper_bound
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PARAMS ((bfd *));
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static long bfd_mach_o_get_symtab
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PARAMS ((bfd *, asymbol **));
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static void bfd_mach_o_get_symbol_info
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PARAMS ((bfd *, asymbol *, symbol_info *));
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static void bfd_mach_o_print_symbol
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PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
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static void bfd_mach_o_convert_architecture
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PARAMS ((bfd_mach_o_cpu_type, bfd_mach_o_cpu_subtype,
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enum bfd_architecture *, unsigned long *));
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static bfd_boolean bfd_mach_o_write_contents
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PARAMS ((bfd *));
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static int bfd_mach_o_sizeof_headers
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PARAMS ((bfd *, bfd_boolean));
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static asymbol * bfd_mach_o_make_empty_symbol
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PARAMS ((bfd *));
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static int bfd_mach_o_write_header
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PARAMS ((bfd *, bfd_mach_o_header *));
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static int bfd_mach_o_read_header
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PARAMS ((bfd *, bfd_mach_o_header *));
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static asection * bfd_mach_o_make_bfd_section
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PARAMS ((bfd *, bfd_mach_o_section *));
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static int bfd_mach_o_scan_read_section
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PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
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static int bfd_mach_o_scan_write_section
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PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
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static int bfd_mach_o_scan_write_symtab_symbols
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_write_thread
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_dylinker
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_dylib
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_prebound_dylib
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_thread
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_write_symtab
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_dysymtab
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_symtab
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_segment
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_write_segment
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static int bfd_mach_o_scan_read_command
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PARAMS ((bfd *, bfd_mach_o_load_command *));
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static void bfd_mach_o_flatten_sections
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PARAMS ((bfd *));
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static const char * bfd_mach_o_i386_flavour_string
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PARAMS ((unsigned int));
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static const char * bfd_mach_o_ppc_flavour_string
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PARAMS ((unsigned int));
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/* The flags field of a section structure is separated into two parts a section
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type and section attributes. The section types are mutually exclusive (it
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can only have one type) but the section attributes are not (it may have more
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than one attribute). */
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#define SECTION_TYPE 0x000000ff /* 256 section types. */
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#define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes. */
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/* Constants for the section attributes part of the flags field of a section
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structure. */
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#define SECTION_ATTRIBUTES_USR 0xff000000 /* User-settable attributes. */
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#define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* Section contains only true machine instructions. */
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#define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* System setable attributes. */
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#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* Section contains some machine instructions. */
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#define S_ATTR_EXT_RELOC 0x00000200 /* Section has external relocation entries. */
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#define S_ATTR_LOC_RELOC 0x00000100 /* Section has local relocation entries. */
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#define N_STAB 0xe0
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#define N_TYPE 0x1e
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#define N_EXT 0x01
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#define N_UNDF 0x0
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#define N_ABS 0x2
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#define N_SECT 0xe
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#define N_INDR 0xa
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bfd_boolean
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bfd_mach_o_valid (abfd)
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bfd *abfd;
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{
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if (abfd == NULL || abfd->xvec == NULL)
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return 0;
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if (! ((abfd->xvec == &mach_o_be_vec)
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|| (abfd->xvec == &mach_o_le_vec)
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|| (abfd->xvec == &mach_o_fat_vec)))
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return 0;
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if (abfd->tdata.mach_o_data == NULL)
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return 0;
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return 1;
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}
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/* Copy any private info we understand from the input symbol
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to the output symbol. */
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static bfd_boolean
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bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol)
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bfd *ibfd ATTRIBUTE_UNUSED;
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asymbol *isymbol ATTRIBUTE_UNUSED;
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bfd *obfd ATTRIBUTE_UNUSED;
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asymbol *osymbol ATTRIBUTE_UNUSED;
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{
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return TRUE;
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}
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/* Copy any private info we understand from the input section
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to the output section. */
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static bfd_boolean
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bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection)
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bfd *ibfd ATTRIBUTE_UNUSED;
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asection *isection ATTRIBUTE_UNUSED;
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bfd *obfd ATTRIBUTE_UNUSED;
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asection *osection ATTRIBUTE_UNUSED;
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{
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return TRUE;
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}
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/* Copy any private info we understand from the input bfd
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to the output bfd. */
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static bfd_boolean
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bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd)
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bfd *ibfd;
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bfd *obfd;
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{
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BFD_ASSERT (bfd_mach_o_valid (ibfd));
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BFD_ASSERT (bfd_mach_o_valid (obfd));
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obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
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obfd->tdata.mach_o_data->ibfd = ibfd;
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return TRUE;
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}
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static long
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bfd_mach_o_count_symbols (abfd)
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bfd *abfd;
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{
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bfd_mach_o_data_struct *mdata = NULL;
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long nsyms = 0;
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unsigned long i;
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BFD_ASSERT (bfd_mach_o_valid (abfd));
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mdata = abfd->tdata.mach_o_data;
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for (i = 0; i < mdata->header.ncmds; i++)
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if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
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{
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bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
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nsyms += sym->nsyms;
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}
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return nsyms;
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}
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static long
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bfd_mach_o_get_symtab_upper_bound (abfd)
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bfd *abfd;
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{
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long nsyms = bfd_mach_o_count_symbols (abfd);
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if (nsyms < 0)
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return nsyms;
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return ((nsyms + 1) * sizeof (asymbol *));
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}
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static long
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bfd_mach_o_get_symtab (abfd, alocation)
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bfd *abfd;
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asymbol **alocation;
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{
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bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
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long nsyms = bfd_mach_o_count_symbols (abfd);
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asymbol **csym = alocation;
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unsigned long i, j;
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if (nsyms < 0)
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return nsyms;
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for (i = 0; i < mdata->header.ncmds; i++)
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{
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if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
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{
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bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
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if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
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{
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fprintf (stderr, "bfd_mach_o_get_symtab: unable to load symbols for section %lu\n", i);
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return 0;
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}
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BFD_ASSERT (sym->symbols != NULL);
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for (j = 0; j < sym->nsyms; j++)
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{
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BFD_ASSERT (csym < (alocation + nsyms));
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*csym++ = &sym->symbols[j];
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}
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}
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}
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*csym++ = NULL;
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return nsyms;
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}
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static void
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bfd_mach_o_get_symbol_info (abfd, symbol, ret)
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bfd *abfd ATTRIBUTE_UNUSED;
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asymbol *symbol;
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symbol_info *ret;
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{
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bfd_symbol_info (symbol, ret);
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}
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static void
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bfd_mach_o_print_symbol (abfd, afile, symbol, how)
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bfd *abfd;
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PTR afile;
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asymbol *symbol;
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bfd_print_symbol_type how;
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{
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FILE *file = (FILE *) afile;
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switch (how)
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{
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case bfd_print_symbol_name:
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fprintf (file, "%s", symbol->name);
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break;
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default:
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bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
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fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
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}
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}
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static void
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bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype)
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bfd_mach_o_cpu_type mtype;
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bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED;
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enum bfd_architecture *type;
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unsigned long *subtype;
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{
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*subtype = bfd_arch_unknown;
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switch (mtype)
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{
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case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
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case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
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case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break;
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case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
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case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
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case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
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case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
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case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
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case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break;
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case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
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case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
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case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break;
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default: *type = bfd_arch_unknown; break;
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}
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switch (*type)
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{
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case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break;
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case bfd_arch_sparc: *subtype = bfd_mach_sparc; break;
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default:
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*subtype = bfd_arch_unknown;
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}
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}
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static bfd_boolean
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bfd_mach_o_write_contents (abfd)
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bfd *abfd;
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{
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unsigned int i;
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asection *s;
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bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
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/* Write data sections first in case they overlap header data to be
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written later. */
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for (s = abfd->sections; s != (asection *) NULL; s = s->next)
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;
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#if 0
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for (i = 0; i < mdata->header.ncmds; i++)
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{
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bfd_mach_o_load_command *cur = &mdata->commands[i];
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if (cur->type != BFD_MACH_O_LC_SEGMENT)
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break;
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{
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bfd_mach_o_segment_command *seg = &cur->command.segment;
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char buf[1024];
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bfd_vma nbytes = seg->filesize;
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bfd_vma curoff = seg->fileoff;
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while (nbytes > 0)
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{
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bfd_vma thisread = nbytes;
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if (thisread > 1024)
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thisread = 1024;
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bfd_seek (abfd, curoff, SEEK_SET);
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if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
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return FALSE;
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bfd_seek (abfd, curoff, SEEK_SET);
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if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
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return FALSE;
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nbytes -= thisread;
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curoff += thisread;
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}
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}
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}
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#endif
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/* Now write header information. */
|
|
if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < mdata->header.ncmds; i++)
|
|
{
|
|
unsigned char buf[8];
|
|
bfd_mach_o_load_command *cur = &mdata->commands[i];
|
|
unsigned long typeflag;
|
|
|
|
typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
|
|
|
|
bfd_h_put_32 (abfd, typeflag, buf);
|
|
bfd_h_put_32 (abfd, cur->len, buf + 4);
|
|
|
|
bfd_seek (abfd, cur->offset, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
|
|
return FALSE;
|
|
|
|
switch (cur->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
if (bfd_mach_o_scan_write_segment (abfd, cur) != 0)
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0)
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMSEG:
|
|
break;
|
|
case BFD_MACH_O_LC_THREAD:
|
|
case BFD_MACH_O_LC_UNIXTHREAD:
|
|
if (bfd_mach_o_scan_write_thread (abfd, cur) != 0)
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOADFVMLIB:
|
|
case BFD_MACH_O_LC_IDFVMLIB:
|
|
case BFD_MACH_O_LC_IDENT:
|
|
case BFD_MACH_O_LC_FVMFILE:
|
|
case BFD_MACH_O_LC_PREPAGE:
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
|
|
case BFD_MACH_O_LC_ID_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
case BFD_MACH_O_LC_ID_DYLINKER:
|
|
case BFD_MACH_O_LC_PREBOUND_DYLIB:
|
|
case BFD_MACH_O_LC_ROUTINES:
|
|
case BFD_MACH_O_LC_SUB_FRAMEWORK:
|
|
break;
|
|
default:
|
|
fprintf (stderr,
|
|
"unable to write unknown load command 0x%lx\n",
|
|
(long) cur->type);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_sizeof_headers (a, b)
|
|
bfd *a ATTRIBUTE_UNUSED;
|
|
bfd_boolean b ATTRIBUTE_UNUSED;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* Make an empty symbol. This is required only because
|
|
bfd_make_section_anyway wants to create a symbol for the section. */
|
|
|
|
static asymbol *
|
|
bfd_mach_o_make_empty_symbol (abfd)
|
|
bfd *abfd;
|
|
{
|
|
asymbol *new;
|
|
|
|
new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
|
|
if (new == NULL)
|
|
return new;
|
|
new->the_bfd = abfd;
|
|
return new;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_write_header (abfd, header)
|
|
bfd *abfd;
|
|
bfd_mach_o_header *header;
|
|
{
|
|
unsigned char buf[28];
|
|
|
|
bfd_h_put_32 (abfd, header->magic, buf + 0);
|
|
bfd_h_put_32 (abfd, header->cputype, buf + 4);
|
|
bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
|
|
bfd_h_put_32 (abfd, header->filetype, buf + 12);
|
|
bfd_h_put_32 (abfd, header->ncmds, buf + 16);
|
|
bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
|
|
bfd_h_put_32 (abfd, header->flags, buf + 24);
|
|
|
|
bfd_seek (abfd, 0, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 28, abfd) != 28)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_read_header (abfd, header)
|
|
bfd *abfd;
|
|
bfd_mach_o_header *header;
|
|
{
|
|
unsigned char buf[28];
|
|
bfd_vma (*get32) PARAMS ((const bfd_byte *)) = NULL;
|
|
|
|
bfd_seek (abfd, 0, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 28, abfd) != 28)
|
|
return -1;
|
|
|
|
if (bfd_getb32 (buf) == 0xfeedface)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_BIG;
|
|
header->magic = 0xfeedface;
|
|
get32 = bfd_getb32;
|
|
}
|
|
else if (bfd_getl32 (buf) == 0xfeedface)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_LITTLE;
|
|
header->magic = 0xfeedface;
|
|
get32 = bfd_getl32;
|
|
}
|
|
else
|
|
{
|
|
header->byteorder = BFD_ENDIAN_UNKNOWN;
|
|
return -1;
|
|
}
|
|
|
|
header->cputype = (*get32) (buf + 4);
|
|
header->cpusubtype = (*get32) (buf + 8);
|
|
header->filetype = (*get32) (buf + 12);
|
|
header->ncmds = (*get32) (buf + 16);
|
|
header->sizeofcmds = (*get32) (buf + 20);
|
|
header->flags = (*get32) (buf + 24);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static asection *
|
|
bfd_mach_o_make_bfd_section (abfd, section)
|
|
bfd *abfd;
|
|
bfd_mach_o_section *section;
|
|
{
|
|
asection *bfdsec;
|
|
char *sname;
|
|
const char *prefix = "LC_SEGMENT";
|
|
unsigned int snamelen;
|
|
|
|
snamelen = strlen (prefix) + 1
|
|
+ strlen (section->segname) + 1
|
|
+ strlen (section->sectname) + 1;
|
|
|
|
sname = (char *) bfd_alloc (abfd, snamelen);
|
|
if (sname == NULL)
|
|
return NULL;
|
|
sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return NULL;
|
|
|
|
bfdsec->vma = section->addr;
|
|
bfdsec->lma = section->addr;
|
|
bfdsec->_raw_size = section->size;
|
|
bfdsec->filepos = section->offset;
|
|
bfdsec->alignment_power = section->align;
|
|
|
|
if (section->flags & BFD_MACH_O_S_ZEROFILL)
|
|
bfdsec->flags = SEC_ALLOC;
|
|
else
|
|
bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
|
|
|
|
return bfdsec;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_section (abfd, section, offset)
|
|
bfd *abfd;
|
|
bfd_mach_o_section *section;
|
|
bfd_vma offset;
|
|
{
|
|
unsigned char buf[68];
|
|
|
|
bfd_seek (abfd, offset, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 68, abfd) != 68)
|
|
return -1;
|
|
|
|
memcpy (section->sectname, buf, 16);
|
|
section->sectname[16] = '\0';
|
|
memcpy (section->segname, buf + 16, 16);
|
|
section->segname[16] = '\0';
|
|
section->addr = bfd_h_get_32 (abfd, buf + 32);
|
|
section->size = bfd_h_get_32 (abfd, buf + 36);
|
|
section->offset = bfd_h_get_32 (abfd, buf + 40);
|
|
section->align = bfd_h_get_32 (abfd, buf + 44);
|
|
section->reloff = bfd_h_get_32 (abfd, buf + 48);
|
|
section->nreloc = bfd_h_get_32 (abfd, buf + 52);
|
|
section->flags = bfd_h_get_32 (abfd, buf + 56);
|
|
section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
|
|
section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
|
|
section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section);
|
|
|
|
if (section->bfdsection == NULL)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_write_section (abfd, section, offset)
|
|
bfd *abfd;
|
|
bfd_mach_o_section *section;
|
|
bfd_vma offset;
|
|
{
|
|
unsigned char buf[68];
|
|
|
|
memcpy (buf, section->sectname, 16);
|
|
memcpy (buf + 16, section->segname, 16);
|
|
bfd_h_put_32 (abfd, section->addr, buf + 32);
|
|
bfd_h_put_32 (abfd, section->size, buf + 36);
|
|
bfd_h_put_32 (abfd, section->offset, buf + 40);
|
|
bfd_h_put_32 (abfd, section->align, buf + 44);
|
|
bfd_h_put_32 (abfd, section->reloff, buf + 48);
|
|
bfd_h_put_32 (abfd, section->nreloc, buf + 52);
|
|
bfd_h_put_32 (abfd, section->flags, buf + 56);
|
|
/* bfd_h_put_32 (abfd, section->reserved1, buf + 60); */
|
|
/* bfd_h_put_32 (abfd, section->reserved2, buf + 64); */
|
|
|
|
bfd_seek (abfd, offset, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_write_symtab_symbols (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_symtab_command *sym = &command->command.symtab;
|
|
asymbol *s = NULL;
|
|
unsigned long i;
|
|
|
|
for (i = 0; i < sym->nsyms; i++)
|
|
{
|
|
unsigned char buf[12];
|
|
bfd_vma symoff = sym->symoff + (i * 12);
|
|
unsigned char ntype = 0;
|
|
unsigned char nsect = 0;
|
|
short ndesc = 0;
|
|
|
|
s = &sym->symbols[i];
|
|
|
|
/* Don't set this from the symbol information; use stored values. */
|
|
#if 0
|
|
if (s->flags & BSF_GLOBAL)
|
|
ntype |= N_EXT;
|
|
if (s->flags & BSF_DEBUGGING)
|
|
ntype |= N_STAB;
|
|
|
|
if (s->section == bfd_und_section_ptr)
|
|
ntype |= N_UNDF;
|
|
else if (s->section == bfd_abs_section_ptr)
|
|
ntype |= N_ABS;
|
|
else
|
|
ntype |= N_SECT;
|
|
#endif
|
|
|
|
/* Instead just set from the stored values. */
|
|
ntype = (s->udata.i >> 24) & 0xff;
|
|
nsect = (s->udata.i >> 16) & 0xff;
|
|
ndesc = s->udata.i & 0xffff;
|
|
|
|
bfd_h_put_32 (abfd, s->name - sym->strtab, buf);
|
|
bfd_h_put_8 (abfd, ntype, buf + 4);
|
|
bfd_h_put_8 (abfd, nsect, buf + 5);
|
|
bfd_h_put_16 (abfd, ndesc, buf + 6);
|
|
bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8);
|
|
|
|
bfd_seek (abfd, symoff, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
|
|
12, (unsigned long) symoff);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i)
|
|
bfd *abfd;
|
|
bfd_mach_o_symtab_command *sym;
|
|
asymbol *s;
|
|
unsigned long i;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
|
|
bfd_vma symoff = sym->symoff + (i * 12);
|
|
unsigned char buf[12];
|
|
unsigned char type = -1;
|
|
unsigned char section = -1;
|
|
short desc = -1;
|
|
unsigned long value = -1;
|
|
unsigned long stroff = -1;
|
|
unsigned int symtype = -1;
|
|
|
|
BFD_ASSERT (sym->strtab != NULL);
|
|
|
|
bfd_seek (abfd, symoff, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 12, abfd) != 12)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
|
|
12, (unsigned long) symoff);
|
|
return -1;
|
|
}
|
|
|
|
stroff = bfd_h_get_32 (abfd, buf);
|
|
type = bfd_h_get_8 (abfd, buf + 4);
|
|
symtype = (type & 0x0e);
|
|
section = bfd_h_get_8 (abfd, buf + 5) - 1;
|
|
desc = bfd_h_get_16 (abfd, buf + 6);
|
|
value = bfd_h_get_32 (abfd, buf + 8);
|
|
|
|
if (stroff >= sym->strsize)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
|
|
(unsigned long) stroff, (unsigned long) sym->strsize);
|
|
return -1;
|
|
}
|
|
|
|
s->the_bfd = abfd;
|
|
s->name = sym->strtab + stroff;
|
|
s->value = value;
|
|
s->udata.i = (type << 24) | (section << 16) | desc;
|
|
s->flags = 0x0;
|
|
|
|
if (type & BFD_MACH_O_N_STAB)
|
|
{
|
|
s->flags |= BSF_DEBUGGING;
|
|
s->section = bfd_und_section_ptr;
|
|
}
|
|
else
|
|
{
|
|
if (type & BFD_MACH_O_N_PEXT)
|
|
{
|
|
type &= ~BFD_MACH_O_N_PEXT;
|
|
s->flags |= BSF_GLOBAL;
|
|
}
|
|
|
|
if (type & BFD_MACH_O_N_EXT)
|
|
{
|
|
type &= ~BFD_MACH_O_N_EXT;
|
|
s->flags |= BSF_GLOBAL;
|
|
}
|
|
|
|
switch (symtype)
|
|
{
|
|
case BFD_MACH_O_N_UNDF:
|
|
s->section = bfd_und_section_ptr;
|
|
break;
|
|
case BFD_MACH_O_N_PBUD:
|
|
s->section = bfd_und_section_ptr;
|
|
break;
|
|
case BFD_MACH_O_N_ABS:
|
|
s->section = bfd_abs_section_ptr;
|
|
break;
|
|
case BFD_MACH_O_N_SECT:
|
|
if ((section > 0) && (section <= mdata->nsects))
|
|
{
|
|
s->section = mdata->sections[section - 1]->bfdsection;
|
|
s->value = s->value - mdata->sections[section - 1]->addr;
|
|
}
|
|
else
|
|
{
|
|
/* Mach-O uses 0 to mean "no section"; not an error. */
|
|
if (section != 0)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
|
|
"symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
|
|
s->name, section, mdata->nsects);
|
|
}
|
|
s->section = bfd_und_section_ptr;
|
|
}
|
|
break;
|
|
case BFD_MACH_O_N_INDR:
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
|
|
"symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
|
|
s->name);
|
|
s->section = bfd_und_section_ptr;
|
|
break;
|
|
default:
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
|
|
"symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
|
|
s->name, symtype);
|
|
s->section = bfd_und_section_ptr;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
|
|
bfd *abfd;
|
|
bfd_mach_o_symtab_command *sym;
|
|
{
|
|
BFD_ASSERT (sym->strtab == NULL);
|
|
|
|
if (abfd->flags & BFD_IN_MEMORY)
|
|
{
|
|
struct bfd_in_memory *b;
|
|
|
|
b = (struct bfd_in_memory *) abfd->iostream;
|
|
|
|
if ((sym->stroff + sym->strsize) > b->size)
|
|
{
|
|
bfd_set_error (bfd_error_file_truncated);
|
|
return -1;
|
|
}
|
|
sym->strtab = b->buffer + sym->stroff;
|
|
return 0;
|
|
}
|
|
|
|
sym->strtab = bfd_alloc (abfd, sym->strsize);
|
|
if (sym->strtab == NULL)
|
|
return -1;
|
|
|
|
bfd_seek (abfd, sym->stroff, SEEK_SET);
|
|
if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
|
|
sym->strsize, sym->stroff);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan_read_symtab_symbols (abfd, sym)
|
|
bfd *abfd;
|
|
bfd_mach_o_symtab_command *sym;
|
|
{
|
|
unsigned long i;
|
|
int ret;
|
|
|
|
BFD_ASSERT (sym->symbols == NULL);
|
|
sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
|
|
|
|
if (sym->symbols == NULL)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
|
|
return -1;
|
|
}
|
|
|
|
ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
for (i = 0; i < sym->nsyms; i++)
|
|
{
|
|
ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
|
|
if (ret != 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan_read_dysymtab_symbol (abfd, dysym, sym, s, i)
|
|
bfd *abfd;
|
|
bfd_mach_o_dysymtab_command *dysym;
|
|
bfd_mach_o_symtab_command *sym;
|
|
asymbol *s;
|
|
unsigned long i;
|
|
{
|
|
unsigned long isymoff = dysym->indirectsymoff + (i * 4);
|
|
unsigned long symindex;
|
|
unsigned char buf[4];
|
|
|
|
BFD_ASSERT (i < dysym->nindirectsyms);
|
|
|
|
bfd_seek (abfd, isymoff, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 4, abfd) != 4)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
|
|
(unsigned long) 4, isymoff);
|
|
return -1;
|
|
}
|
|
symindex = bfd_h_get_32 (abfd, buf);
|
|
|
|
return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
|
|
}
|
|
|
|
static const char *
|
|
bfd_mach_o_i386_flavour_string (flavour)
|
|
unsigned int flavour;
|
|
{
|
|
switch ((int) flavour)
|
|
{
|
|
case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE";
|
|
case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE";
|
|
case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE";
|
|
case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE";
|
|
case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE";
|
|
case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE";
|
|
case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE";
|
|
case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE";
|
|
case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE";
|
|
case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE";
|
|
case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE";
|
|
case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE";
|
|
default: return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
bfd_mach_o_ppc_flavour_string (flavour)
|
|
unsigned int flavour;
|
|
{
|
|
switch ((int) flavour)
|
|
{
|
|
case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
|
|
case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
|
|
case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
|
|
case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
|
|
default: return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_write_thread (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_thread_command *cmd = &command->command.thread;
|
|
unsigned int i;
|
|
unsigned char buf[8];
|
|
bfd_vma offset;
|
|
unsigned int nflavours;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|
|
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
|
|
|
|
offset = 8;
|
|
nflavours = 0;
|
|
for (i = 0; i < cmd->nflavours; i++)
|
|
{
|
|
BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
|
|
BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
|
|
|
|
bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
|
|
bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
|
|
|
|
bfd_seek (abfd, command->offset + offset, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
|
|
return -1;
|
|
|
|
offset += cmd->flavours[i].size + 8;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_dylinker (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
|
|
unsigned char buf[4];
|
|
unsigned int nameoff;
|
|
asection *bfdsec;
|
|
char *sname;
|
|
const char *prefix;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
|
|
|| (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 4, abfd) != 4)
|
|
return -1;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, buf + 0);
|
|
|
|
cmd->name_offset = command->offset + nameoff;
|
|
cmd->name_len = command->len - nameoff;
|
|
|
|
if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)
|
|
prefix = "LC_LOAD_DYLINKER";
|
|
else if (command->type == BFD_MACH_O_LC_ID_DYLINKER)
|
|
prefix = "LC_ID_DYLINKER";
|
|
else
|
|
abort ();
|
|
|
|
sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
|
|
if (sname == NULL)
|
|
return -1;
|
|
strcpy (sname, prefix);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return -1;
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->_raw_size = command->len - 8;
|
|
bfdsec->filepos = command->offset + 8;
|
|
bfdsec->alignment_power = 0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS;
|
|
|
|
cmd->section = bfdsec;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_dylib (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_dylib_command *cmd = &command->command.dylib;
|
|
unsigned char buf[16];
|
|
unsigned int nameoff;
|
|
asection *bfdsec;
|
|
char *sname;
|
|
const char *prefix;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB)
|
|
|| (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
|
|
|| (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB));
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 16, abfd) != 16)
|
|
return -1;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, buf + 0);
|
|
cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
|
|
cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
|
|
cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
|
|
|
|
cmd->name_offset = command->offset + nameoff;
|
|
cmd->name_len = command->len - nameoff;
|
|
|
|
if (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
|
|
prefix = "LC_LOAD_DYLIB";
|
|
else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)
|
|
prefix = "LC_LOAD_WEAK_DYLIB";
|
|
else if (command->type == BFD_MACH_O_LC_ID_DYLIB)
|
|
prefix = "LC_ID_DYLIB";
|
|
else
|
|
abort ();
|
|
|
|
sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
|
|
if (sname == NULL)
|
|
return -1;
|
|
strcpy (sname, prefix);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return -1;
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->_raw_size = command->len - 8;
|
|
bfdsec->filepos = command->offset + 8;
|
|
bfdsec->alignment_power = 0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS;
|
|
|
|
cmd->section = bfdsec;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_prebound_dylib (abfd, command)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
bfd_mach_o_load_command *command ATTRIBUTE_UNUSED;
|
|
{
|
|
/* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_thread (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = NULL;
|
|
bfd_mach_o_thread_command *cmd = &command->command.thread;
|
|
unsigned char buf[8];
|
|
bfd_vma offset;
|
|
unsigned int nflavours;
|
|
unsigned int i;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|
|
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
|
|
|
|
BFD_ASSERT (bfd_mach_o_valid (abfd));
|
|
mdata = abfd->tdata.mach_o_data;
|
|
|
|
offset = 8;
|
|
nflavours = 0;
|
|
while (offset != command->len)
|
|
{
|
|
if (offset >= command->len)
|
|
return -1;
|
|
|
|
bfd_seek (abfd, command->offset + offset, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 8, abfd) != 8)
|
|
return -1;
|
|
|
|
offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
|
|
nflavours++;
|
|
}
|
|
|
|
cmd->flavours =
|
|
((bfd_mach_o_thread_flavour *)
|
|
bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)));
|
|
if (cmd->flavours == NULL)
|
|
return -1;
|
|
cmd->nflavours = nflavours;
|
|
|
|
offset = 8;
|
|
nflavours = 0;
|
|
while (offset != command->len)
|
|
{
|
|
if (offset >= command->len)
|
|
return -1;
|
|
|
|
if (nflavours >= cmd->nflavours)
|
|
return -1;
|
|
|
|
bfd_seek (abfd, command->offset + offset, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 8, abfd) != 8)
|
|
return -1;
|
|
|
|
cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
|
|
cmd->flavours[nflavours].offset = command->offset + offset + 8;
|
|
cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
|
|
offset += cmd->flavours[nflavours].size + 8;
|
|
nflavours++;
|
|
}
|
|
|
|
for (i = 0; i < nflavours; i++)
|
|
{
|
|
asection *bfdsec;
|
|
unsigned int snamelen;
|
|
char *sname;
|
|
const char *flavourstr;
|
|
const char *prefix = "LC_THREAD";
|
|
unsigned int j = 0;
|
|
|
|
switch (mdata->header.cputype)
|
|
{
|
|
case BFD_MACH_O_CPU_TYPE_POWERPC:
|
|
flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_I386:
|
|
flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
|
|
break;
|
|
default:
|
|
flavourstr = "UNKNOWN_ARCHITECTURE";
|
|
break;
|
|
}
|
|
|
|
snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
|
|
sname = (char *) bfd_alloc (abfd, snamelen);
|
|
if (sname == NULL)
|
|
return -1;
|
|
|
|
for (;;)
|
|
{
|
|
sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
|
|
if (bfd_get_section_by_name (abfd, sname) == NULL)
|
|
break;
|
|
j++;
|
|
}
|
|
|
|
bfdsec = bfd_make_section (abfd, sname);
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->_raw_size = cmd->flavours[i].size;
|
|
bfdsec->filepos = cmd->flavours[i].offset;
|
|
bfdsec->alignment_power = 0x0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS;
|
|
|
|
cmd->section = bfdsec;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_write_symtab (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_symtab_command *seg = &command->command.symtab;
|
|
unsigned char buf[16];
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
|
|
|
|
bfd_h_put_32 (abfd, seg->symoff, buf);
|
|
bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
|
|
bfd_h_put_32 (abfd, seg->stroff, buf + 8);
|
|
bfd_h_put_32 (abfd, seg->strsize, buf + 12);
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
|
|
return -1;
|
|
|
|
if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_dysymtab (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
|
|
unsigned char buf[72];
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 72, abfd) != 72)
|
|
return -1;
|
|
|
|
seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
|
|
seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
|
|
seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
|
|
seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
|
|
seg->iundefsym = bfd_h_get_32 (abfd, buf + 16);
|
|
seg->nundefsym = bfd_h_get_32 (abfd, buf + 20);
|
|
seg->tocoff = bfd_h_get_32 (abfd, buf + 24);
|
|
seg->ntoc = bfd_h_get_32 (abfd, buf + 28);
|
|
seg->modtaboff = bfd_h_get_32 (abfd, buf + 32);
|
|
seg->nmodtab = bfd_h_get_32 (abfd, buf + 36);
|
|
seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
|
|
seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
|
|
seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
|
|
seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
|
|
seg->extreloff = bfd_h_get_32 (abfd, buf + 56);
|
|
seg->nextrel = bfd_h_get_32 (abfd, buf + 60);
|
|
seg->locreloff = bfd_h_get_32 (abfd, buf + 64);
|
|
seg->nlocrel = bfd_h_get_32 (abfd, buf + 68);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_symtab (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
bfd_mach_o_symtab_command *seg = &command->command.symtab;
|
|
unsigned char buf[16];
|
|
asection *bfdsec;
|
|
char *sname;
|
|
const char *prefix = "LC_SYMTAB.stabs";
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 16, abfd) != 16)
|
|
return -1;
|
|
|
|
seg->symoff = bfd_h_get_32 (abfd, buf);
|
|
seg->nsyms = bfd_h_get_32 (abfd, buf + 4);
|
|
seg->stroff = bfd_h_get_32 (abfd, buf + 8);
|
|
seg->strsize = bfd_h_get_32 (abfd, buf + 12);
|
|
seg->symbols = NULL;
|
|
seg->strtab = NULL;
|
|
|
|
sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
|
|
if (sname == NULL)
|
|
return -1;
|
|
strcpy (sname, prefix);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return -1;
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->_raw_size = seg->nsyms * 12;
|
|
bfdsec->filepos = seg->symoff;
|
|
bfdsec->alignment_power = 0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS;
|
|
|
|
seg->stabs_segment = bfdsec;
|
|
|
|
prefix = "LC_SYMTAB.stabstr";
|
|
sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
|
|
if (sname == NULL)
|
|
return -1;
|
|
strcpy (sname, prefix);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return -1;
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->_raw_size = seg->strsize;
|
|
bfdsec->filepos = seg->stroff;
|
|
bfdsec->alignment_power = 0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS;
|
|
|
|
seg->stabstr_segment = bfdsec;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_segment (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
unsigned char buf[48];
|
|
bfd_mach_o_segment_command *seg = &command->command.segment;
|
|
unsigned long i;
|
|
asection *bfdsec;
|
|
char *sname;
|
|
const char *prefix = "LC_SEGMENT";
|
|
unsigned int snamelen;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 48, abfd) != 48)
|
|
return -1;
|
|
|
|
memcpy (seg->segname, buf, 16);
|
|
seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
|
|
seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
|
|
seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
|
|
seg->filesize = bfd_h_get_32 (abfd, buf + 28);
|
|
/* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */
|
|
/* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */
|
|
seg->nsects = bfd_h_get_32 (abfd, buf + 40);
|
|
seg->flags = bfd_h_get_32 (abfd, buf + 44);
|
|
|
|
snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1;
|
|
sname = (char *) bfd_alloc (abfd, snamelen);
|
|
if (sname == NULL)
|
|
return -1;
|
|
sprintf (sname, "%s.%s", prefix, seg->segname);
|
|
|
|
bfdsec = bfd_make_section_anyway (abfd, sname);
|
|
if (bfdsec == NULL)
|
|
return -1;
|
|
|
|
bfdsec->vma = seg->vmaddr;
|
|
bfdsec->lma = seg->vmaddr;
|
|
bfdsec->_raw_size = seg->filesize;
|
|
bfdsec->filepos = seg->fileoff;
|
|
bfdsec->alignment_power = 0x0;
|
|
bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
|
|
|
|
seg->segment = bfdsec;
|
|
|
|
if (seg->nsects != 0)
|
|
{
|
|
seg->sections =
|
|
((bfd_mach_o_section *)
|
|
bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)));
|
|
if (seg->sections == NULL)
|
|
return -1;
|
|
|
|
for (i = 0; i < seg->nsects; i++)
|
|
{
|
|
bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
|
|
|
|
if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i],
|
|
segoff) != 0)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_write_segment (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
unsigned char buf[48];
|
|
bfd_mach_o_segment_command *seg = &command->command.segment;
|
|
unsigned long i;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
|
|
|
|
memcpy (buf, seg->segname, 16);
|
|
bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
|
|
bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
|
|
bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
|
|
bfd_h_put_32 (abfd, seg->filesize, buf + 28);
|
|
bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32);
|
|
bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36);
|
|
bfd_h_put_32 (abfd, seg->nsects, buf + 40);
|
|
bfd_h_put_32 (abfd, seg->flags, buf + 44);
|
|
|
|
bfd_seek (abfd, command->offset + 8, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, 48, abfd) != 48)
|
|
return -1;
|
|
|
|
{
|
|
char buf[1024];
|
|
bfd_vma nbytes = seg->filesize;
|
|
bfd_vma curoff = seg->fileoff;
|
|
|
|
while (nbytes > 0)
|
|
{
|
|
bfd_vma thisread = nbytes;
|
|
|
|
if (thisread > 1024)
|
|
thisread = 1024;
|
|
|
|
bfd_seek (abfd, curoff, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
|
|
return -1;
|
|
|
|
bfd_seek (abfd, curoff, SEEK_SET);
|
|
if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
|
|
return -1;
|
|
|
|
nbytes -= thisread;
|
|
curoff += thisread;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < seg->nsects; i++)
|
|
{
|
|
bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
|
|
|
|
if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_scan_read_command (abfd, command)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command *command;
|
|
{
|
|
unsigned char buf[8];
|
|
|
|
bfd_seek (abfd, command->offset, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 8, abfd) != 8)
|
|
return -1;
|
|
|
|
command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD);
|
|
command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
|
|
? 1 : 0);
|
|
command->len = bfd_h_get_32 (abfd, buf + 4);
|
|
|
|
switch (command->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
if (bfd_mach_o_scan_read_segment (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMSEG:
|
|
break;
|
|
case BFD_MACH_O_LC_THREAD:
|
|
case BFD_MACH_O_LC_UNIXTHREAD:
|
|
if (bfd_mach_o_scan_read_thread (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
case BFD_MACH_O_LC_ID_DYLINKER:
|
|
if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_ID_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
|
|
if (bfd_mach_o_scan_read_dylib (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_PREBOUND_DYLIB:
|
|
if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_LOADFVMLIB:
|
|
case BFD_MACH_O_LC_IDFVMLIB:
|
|
case BFD_MACH_O_LC_IDENT:
|
|
case BFD_MACH_O_LC_FVMFILE:
|
|
case BFD_MACH_O_LC_PREPAGE:
|
|
case BFD_MACH_O_LC_ROUTINES:
|
|
case BFD_MACH_O_LC_SUB_FRAMEWORK:
|
|
break;
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0)
|
|
return -1;
|
|
break;
|
|
case BFD_MACH_O_LC_SUB_UMBRELLA:
|
|
case BFD_MACH_O_LC_SUB_CLIENT:
|
|
case BFD_MACH_O_LC_SUB_LIBRARY:
|
|
case BFD_MACH_O_LC_TWOLEVEL_HINTS:
|
|
case BFD_MACH_O_LC_PREBIND_CKSUM:
|
|
break;
|
|
default:
|
|
fprintf (stderr, "unable to read unknown load command 0x%lx\n",
|
|
(unsigned long) command->type);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
bfd_mach_o_flatten_sections (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
|
|
long csect = 0;
|
|
unsigned long i, j;
|
|
|
|
mdata->nsects = 0;
|
|
|
|
for (i = 0; i < mdata->header.ncmds; i++)
|
|
{
|
|
if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
|
|
{
|
|
bfd_mach_o_segment_command *seg;
|
|
|
|
seg = &mdata->commands[i].command.segment;
|
|
mdata->nsects += seg->nsects;
|
|
}
|
|
}
|
|
|
|
mdata->sections = bfd_alloc (abfd,
|
|
mdata->nsects * sizeof (bfd_mach_o_section *));
|
|
csect = 0;
|
|
|
|
for (i = 0; i < mdata->header.ncmds; i++)
|
|
{
|
|
if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
|
|
{
|
|
bfd_mach_o_segment_command *seg;
|
|
|
|
seg = &mdata->commands[i].command.segment;
|
|
BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
|
|
|
|
for (j = 0; j < seg->nsects; j++)
|
|
mdata->sections[csect++] = &seg->sections[j];
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan_start_address (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
|
|
bfd_mach_o_thread_command *cmd = NULL;
|
|
unsigned long i;
|
|
|
|
for (i = 0; i < mdata->header.ncmds; i++)
|
|
{
|
|
if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
|
|
(mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
|
|
{
|
|
if (cmd == NULL)
|
|
cmd = &mdata->commands[i].command.thread;
|
|
else
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (cmd == NULL)
|
|
return 0;
|
|
|
|
for (i = 0; i < cmd->nflavours; i++)
|
|
{
|
|
if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
|
|
&& (cmd->flavours[i].flavour
|
|
== (unsigned long) BFD_MACH_O_i386_THREAD_STATE))
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET);
|
|
|
|
if (bfd_bread (buf, 4, abfd) != 4)
|
|
return -1;
|
|
|
|
abfd->start_address = bfd_h_get_32 (abfd, buf);
|
|
}
|
|
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
|
|
&& (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
|
|
|
|
if (bfd_bread (buf, 4, abfd) != 4)
|
|
return -1;
|
|
|
|
abfd->start_address = bfd_h_get_32 (abfd, buf);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_scan (abfd, header, mdata)
|
|
bfd *abfd;
|
|
bfd_mach_o_header *header;
|
|
bfd_mach_o_data_struct *mdata;
|
|
{
|
|
unsigned int i;
|
|
enum bfd_architecture cputype;
|
|
unsigned long cpusubtype;
|
|
|
|
mdata->header = *header;
|
|
mdata->symbols = NULL;
|
|
|
|
abfd->flags = (abfd->xvec->object_flags
|
|
| (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS)));
|
|
abfd->tdata.mach_o_data = mdata;
|
|
|
|
bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
|
|
&cputype, &cpusubtype);
|
|
if (cputype == bfd_arch_unknown)
|
|
{
|
|
fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
|
|
header->cputype, header->cpusubtype);
|
|
return -1;
|
|
}
|
|
|
|
bfd_set_arch_mach (abfd, cputype, cpusubtype);
|
|
|
|
if (header->ncmds != 0)
|
|
{
|
|
mdata->commands =
|
|
((bfd_mach_o_load_command *)
|
|
bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command)));
|
|
if (mdata->commands == NULL)
|
|
return -1;
|
|
|
|
for (i = 0; i < header->ncmds; i++)
|
|
{
|
|
bfd_mach_o_load_command *cur = &mdata->commands[i];
|
|
|
|
if (i == 0)
|
|
cur->offset = 28;
|
|
else
|
|
{
|
|
bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
|
|
cur->offset = prev->offset + prev->len;
|
|
}
|
|
|
|
if (bfd_mach_o_scan_read_command (abfd, cur) < 0)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (bfd_mach_o_scan_start_address (abfd) < 0)
|
|
{
|
|
#if 0
|
|
fprintf (stderr, "bfd_mach_o_scan: unable to scan start address: %s\n",
|
|
bfd_errmsg (bfd_get_error ()));
|
|
abfd->tdata.mach_o_data = NULL;
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
bfd_mach_o_flatten_sections (abfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_mkobject (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = NULL;
|
|
|
|
mdata = ((bfd_mach_o_data_struct *)
|
|
bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
|
|
if (mdata == NULL)
|
|
return FALSE;
|
|
abfd->tdata.mach_o_data = mdata;
|
|
|
|
mdata->header.magic = 0;
|
|
mdata->header.cputype = 0;
|
|
mdata->header.cpusubtype = 0;
|
|
mdata->header.filetype = 0;
|
|
mdata->header.ncmds = 0;
|
|
mdata->header.sizeofcmds = 0;
|
|
mdata->header.flags = 0;
|
|
mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
|
|
mdata->commands = NULL;
|
|
mdata->nsymbols = 0;
|
|
mdata->symbols = NULL;
|
|
mdata->nsects = 0;
|
|
mdata->sections = NULL;
|
|
mdata->ibfd = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
const bfd_target *
|
|
bfd_mach_o_object_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
struct bfd_preserve preserve;
|
|
bfd_mach_o_header header;
|
|
|
|
preserve.marker = NULL;
|
|
if (bfd_mach_o_read_header (abfd, &header) != 0)
|
|
goto wrong;
|
|
|
|
if (! (header.byteorder == BFD_ENDIAN_BIG
|
|
|| header.byteorder == BFD_ENDIAN_LITTLE))
|
|
{
|
|
fprintf (stderr, "unknown header byte-order value 0x%lx\n",
|
|
(long) header.byteorder);
|
|
goto wrong;
|
|
}
|
|
|
|
if (! ((header.byteorder == BFD_ENDIAN_BIG
|
|
&& abfd->xvec->byteorder == BFD_ENDIAN_BIG
|
|
&& abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
|
|
|| (header.byteorder == BFD_ENDIAN_LITTLE
|
|
&& abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
|
|
&& abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
|
|
goto wrong;
|
|
|
|
preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
|
|
if (preserve.marker == NULL
|
|
|| !bfd_preserve_save (abfd, &preserve))
|
|
goto fail;
|
|
|
|
if (bfd_mach_o_scan (abfd, &header,
|
|
(bfd_mach_o_data_struct *) preserve.marker) != 0)
|
|
goto wrong;
|
|
|
|
bfd_preserve_finish (abfd, &preserve);
|
|
return abfd->xvec;
|
|
|
|
wrong:
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
fail:
|
|
if (preserve.marker != NULL)
|
|
bfd_preserve_restore (abfd, &preserve);
|
|
return NULL;
|
|
}
|
|
|
|
const bfd_target *
|
|
bfd_mach_o_core_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
struct bfd_preserve preserve;
|
|
bfd_mach_o_header header;
|
|
|
|
preserve.marker = NULL;
|
|
if (bfd_mach_o_read_header (abfd, &header) != 0)
|
|
goto wrong;
|
|
|
|
if (! (header.byteorder == BFD_ENDIAN_BIG
|
|
|| header.byteorder == BFD_ENDIAN_LITTLE))
|
|
{
|
|
fprintf (stderr, "unknown header byte-order value 0x%lx\n",
|
|
(long) header.byteorder);
|
|
abort ();
|
|
}
|
|
|
|
if (! ((header.byteorder == BFD_ENDIAN_BIG
|
|
&& abfd->xvec->byteorder == BFD_ENDIAN_BIG
|
|
&& abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
|
|
|| (header.byteorder == BFD_ENDIAN_LITTLE
|
|
&& abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
|
|
&& abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
|
|
goto wrong;
|
|
|
|
if (header.filetype != BFD_MACH_O_MH_CORE)
|
|
goto wrong;
|
|
|
|
preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
|
|
if (preserve.marker == NULL
|
|
|| !bfd_preserve_save (abfd, &preserve))
|
|
goto fail;
|
|
|
|
if (bfd_mach_o_scan (abfd, &header,
|
|
(bfd_mach_o_data_struct *) preserve.marker) != 0)
|
|
goto wrong;
|
|
|
|
bfd_preserve_finish (abfd, &preserve);
|
|
return abfd->xvec;
|
|
|
|
wrong:
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
fail:
|
|
if (preserve.marker != NULL)
|
|
bfd_preserve_restore (abfd, &preserve);
|
|
return NULL;
|
|
}
|
|
|
|
typedef struct mach_o_fat_archentry
|
|
{
|
|
unsigned long cputype;
|
|
unsigned long cpusubtype;
|
|
unsigned long offset;
|
|
unsigned long size;
|
|
unsigned long align;
|
|
bfd *abfd;
|
|
} mach_o_fat_archentry;
|
|
|
|
typedef struct mach_o_fat_data_struct
|
|
{
|
|
unsigned long magic;
|
|
unsigned long nfat_arch;
|
|
mach_o_fat_archentry *archentries;
|
|
} mach_o_fat_data_struct;
|
|
|
|
const bfd_target *
|
|
bfd_mach_o_archive_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
mach_o_fat_data_struct *adata = NULL;
|
|
unsigned char buf[20];
|
|
unsigned long i;
|
|
|
|
bfd_seek (abfd, 0, SEEK_SET);
|
|
if (bfd_bread ((PTR) buf, 8, abfd) != 8)
|
|
goto error;
|
|
|
|
adata = (mach_o_fat_data_struct *)
|
|
bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
|
|
if (adata == NULL)
|
|
goto error;
|
|
|
|
adata->magic = bfd_getb32 (buf);
|
|
adata->nfat_arch = bfd_getb32 (buf + 4);
|
|
if (adata->magic != 0xcafebabe)
|
|
goto error;
|
|
|
|
adata->archentries = (mach_o_fat_archentry *)
|
|
bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
|
|
if (adata->archentries == NULL)
|
|
goto error;
|
|
|
|
for (i = 0; i < adata->nfat_arch; i++)
|
|
{
|
|
bfd_seek (abfd, 8 + 20 * i, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 20, abfd) != 20)
|
|
goto error;
|
|
adata->archentries[i].cputype = bfd_getb32 (buf);
|
|
adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
|
|
adata->archentries[i].offset = bfd_getb32 (buf + 8);
|
|
adata->archentries[i].size = bfd_getb32 (buf + 12);
|
|
adata->archentries[i].align = bfd_getb32 (buf + 16);
|
|
adata->archentries[i].abfd = NULL;
|
|
}
|
|
|
|
abfd->tdata.mach_o_fat_data = adata;
|
|
return abfd->xvec;
|
|
|
|
error:
|
|
if (adata != NULL)
|
|
bfd_release (abfd, adata);
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
bfd *
|
|
bfd_mach_o_openr_next_archived_file (archive, prev)
|
|
bfd *archive;
|
|
bfd *prev;
|
|
{
|
|
mach_o_fat_data_struct *adata;
|
|
mach_o_fat_archentry *entry = NULL;
|
|
unsigned long i;
|
|
|
|
adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
|
|
BFD_ASSERT (adata != NULL);
|
|
|
|
/* Find index of previous entry. */
|
|
if (prev == NULL)
|
|
i = 0; /* Start at first one. */
|
|
else
|
|
{
|
|
for (i = 0; i < adata->nfat_arch; i++)
|
|
{
|
|
if (adata->archentries[i].abfd == prev)
|
|
break;
|
|
}
|
|
|
|
if (i == adata->nfat_arch)
|
|
{
|
|
/* Not found. */
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
i++; /* Get next entry. */
|
|
}
|
|
|
|
if (i >= adata->nfat_arch)
|
|
{
|
|
bfd_set_error (bfd_error_no_more_archived_files);
|
|
return NULL;
|
|
}
|
|
|
|
entry = &adata->archentries[i];
|
|
if (entry->abfd == NULL)
|
|
{
|
|
bfd *nbfd = _bfd_new_bfd_contained_in (archive);
|
|
char *s = NULL;
|
|
|
|
if (nbfd == NULL)
|
|
return NULL;
|
|
|
|
nbfd->origin = entry->offset;
|
|
s = bfd_malloc (strlen (archive->filename) + 1);
|
|
if (s == NULL)
|
|
return NULL;
|
|
strcpy (s, archive->filename);
|
|
nbfd->filename = s;
|
|
nbfd->iostream = NULL;
|
|
entry->abfd = nbfd;
|
|
}
|
|
|
|
return entry->abfd;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_lookup_section (abfd, section, mcommand, msection)
|
|
bfd *abfd;
|
|
asection *section;
|
|
bfd_mach_o_load_command **mcommand;
|
|
bfd_mach_o_section **msection;
|
|
{
|
|
struct mach_o_data_struct *md = abfd->tdata.mach_o_data;
|
|
unsigned int i, j, num;
|
|
|
|
bfd_mach_o_load_command *ncmd = NULL;
|
|
bfd_mach_o_section *nsect = NULL;
|
|
|
|
BFD_ASSERT (mcommand != NULL);
|
|
BFD_ASSERT (msection != NULL);
|
|
|
|
num = 0;
|
|
for (i = 0; i < md->header.ncmds; i++)
|
|
{
|
|
struct bfd_mach_o_load_command *cmd = &md->commands[i];
|
|
struct bfd_mach_o_segment_command *seg = NULL;
|
|
|
|
if (cmd->type != BFD_MACH_O_LC_SEGMENT)
|
|
continue;
|
|
seg = &cmd->command.segment;
|
|
|
|
if (seg->segment == section)
|
|
{
|
|
if (num == 0)
|
|
ncmd = cmd;
|
|
num++;
|
|
}
|
|
|
|
for (j = 0; j < seg->nsects; j++)
|
|
{
|
|
struct bfd_mach_o_section *sect = &seg->sections[j];
|
|
|
|
if (sect->bfdsection == section)
|
|
{
|
|
if (num == 0)
|
|
nsect = sect;
|
|
num++;
|
|
}
|
|
}
|
|
}
|
|
|
|
*mcommand = ncmd;
|
|
*msection = nsect;
|
|
return num;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_lookup_command (abfd, type, mcommand)
|
|
bfd *abfd;
|
|
bfd_mach_o_load_command_type type;
|
|
bfd_mach_o_load_command **mcommand;
|
|
{
|
|
struct mach_o_data_struct *md = NULL;
|
|
bfd_mach_o_load_command *ncmd = NULL;
|
|
unsigned int i, num;
|
|
|
|
md = abfd->tdata.mach_o_data;
|
|
|
|
BFD_ASSERT (md != NULL);
|
|
BFD_ASSERT (mcommand != NULL);
|
|
|
|
num = 0;
|
|
for (i = 0; i < md->header.ncmds; i++)
|
|
{
|
|
struct bfd_mach_o_load_command *cmd = &md->commands[i];
|
|
|
|
if (cmd->type != type)
|
|
continue;
|
|
|
|
if (num == 0)
|
|
ncmd = cmd;
|
|
num++;
|
|
}
|
|
|
|
*mcommand = ncmd;
|
|
return num;
|
|
}
|
|
|
|
unsigned long
|
|
bfd_mach_o_stack_addr (type)
|
|
enum bfd_mach_o_cpu_type type;
|
|
{
|
|
switch (type)
|
|
{
|
|
case BFD_MACH_O_CPU_TYPE_MC680x0:
|
|
return 0x04000000;
|
|
case BFD_MACH_O_CPU_TYPE_MC88000:
|
|
return 0xffffe000;
|
|
case BFD_MACH_O_CPU_TYPE_POWERPC:
|
|
return 0xc0000000;
|
|
case BFD_MACH_O_CPU_TYPE_I386:
|
|
return 0xc0000000;
|
|
case BFD_MACH_O_CPU_TYPE_SPARC:
|
|
return 0xf0000000;
|
|
case BFD_MACH_O_CPU_TYPE_I860:
|
|
return 0;
|
|
case BFD_MACH_O_CPU_TYPE_HPPA:
|
|
return 0xc0000000 - 0x04000000;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
|
|
bfd *abfd;
|
|
unsigned char **rbuf;
|
|
unsigned int *rlen;
|
|
{
|
|
bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
|
|
unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
|
|
unsigned int i = 0;
|
|
|
|
for (i = 0; i < mdata->header.ncmds; i++)
|
|
{
|
|
bfd_mach_o_load_command *cur = &mdata->commands[i];
|
|
bfd_mach_o_segment_command *seg = NULL;
|
|
|
|
if (cur->type != BFD_MACH_O_LC_SEGMENT)
|
|
continue;
|
|
|
|
seg = &cur->command.segment;
|
|
|
|
if ((seg->vmaddr + seg->vmsize) == stackaddr)
|
|
{
|
|
unsigned long start = seg->fileoff;
|
|
unsigned long end = seg->fileoff + seg->filesize;
|
|
unsigned char *buf = bfd_malloc (1024);
|
|
unsigned long size = 1024;
|
|
|
|
for (;;)
|
|
{
|
|
bfd_size_type nread = 0;
|
|
unsigned long offset;
|
|
int found_nonnull = 0;
|
|
|
|
if (size > (end - start))
|
|
size = (end - start);
|
|
|
|
buf = bfd_realloc (buf, size);
|
|
|
|
bfd_seek (abfd, end - size, SEEK_SET);
|
|
nread = bfd_bread (buf, size, abfd);
|
|
|
|
if (nread != size)
|
|
return -1;
|
|
|
|
for (offset = 4; offset <= size; offset += 4)
|
|
{
|
|
unsigned long val;
|
|
|
|
val = *((unsigned long *) (buf + size - offset));
|
|
if (! found_nonnull)
|
|
{
|
|
if (val != 0)
|
|
found_nonnull = 1;
|
|
}
|
|
else if (val == 0x0)
|
|
{
|
|
unsigned long bottom;
|
|
unsigned long top;
|
|
|
|
bottom = seg->fileoff + seg->filesize - offset;
|
|
top = seg->fileoff + seg->filesize - 4;
|
|
*rbuf = bfd_malloc (top - bottom);
|
|
*rlen = top - bottom;
|
|
|
|
memcpy (*rbuf, buf + size - *rlen, *rlen);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (size == (end - start))
|
|
break;
|
|
|
|
size *= 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
char *
|
|
bfd_mach_o_core_file_failing_command (abfd)
|
|
bfd *abfd;
|
|
{
|
|
unsigned char *buf = NULL;
|
|
unsigned int len = 0;
|
|
int ret = -1;
|
|
|
|
ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
|
|
if (ret < 0)
|
|
return NULL;
|
|
|
|
return buf;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_core_file_failing_signal (abfd)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
|
|
bfd *core_bfd ATTRIBUTE_UNUSED;
|
|
bfd *exec_bfd ATTRIBUTE_UNUSED;
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
#define TARGET_NAME mach_o_be_vec
|
|
#define TARGET_STRING "mach-o-be"
|
|
#define TARGET_BIG_ENDIAN 1
|
|
#define TARGET_ARCHIVE 0
|
|
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|
|
|
|
#define TARGET_NAME mach_o_le_vec
|
|
#define TARGET_STRING "mach-o-le"
|
|
#define TARGET_BIG_ENDIAN 0
|
|
#define TARGET_ARCHIVE 0
|
|
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|
|
|
|
#define TARGET_NAME mach_o_fat_vec
|
|
#define TARGET_STRING "mach-o-fat"
|
|
#define TARGET_BIG_ENDIAN 1
|
|
#define TARGET_ARCHIVE 1
|
|
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|