/* Mach-O support for BFD.
- Copyright 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "mach-o.h"
-#include "bfd.h"
#include "sysdep.h"
+#include <limits.h>
+#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
+#include "mach-o.h"
+#include "aout/stab_gnu.h"
+#include "mach-o/reloc.h"
+#include "mach-o/external.h"
#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
-#ifndef BFD_IO_FUNCS
-#define BFD_IO_FUNCS 0
-#endif
+#define bfd_mach_o_object_p bfd_mach_o_gen_object_p
+#define bfd_mach_o_core_p bfd_mach_o_gen_core_p
+#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
-#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
-#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
-#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
-#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
-#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
-#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
-#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
-#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
-#define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
-#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
-#define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup
-#define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
-#define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook
-#define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
-#define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
-#define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno
-#define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line
-#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
-#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
-#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
-#define bfd_mach_o_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
-#define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
-#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
-#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
-#define bfd_mach_o_bfd_relax_section bfd_generic_relax_section
-#define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
-#define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
-#define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols
-#define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms
-#define bfd_mach_o_bfd_final_link _bfd_generic_final_link
-#define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section
-#define bfd_mach_o_set_arch_mach bfd_default_set_arch_mach
-#define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
-#define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
-#define bfd_mach_o_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
-#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
-#define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents
-#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
-#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
-#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
-
-static boolean bfd_mach_o_bfd_copy_private_symbol_data PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
-static boolean bfd_mach_o_bfd_copy_private_section_data PARAMS ((bfd *, asection *, bfd *, asection *));
-static boolean bfd_mach_o_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
-static long bfd_mach_o_count_symbols PARAMS ((bfd *));
-static long bfd_mach_o_get_symtab_upper_bound PARAMS ((bfd *));
-static long bfd_mach_o_get_symtab PARAMS ((bfd *, asymbol **));
-static void bfd_mach_o_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
-static void bfd_mach_o_print_symbol PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
-static void bfd_mach_o_convert_architecture PARAMS ((bfd_mach_o_cpu_type, bfd_mach_o_cpu_subtype, enum bfd_architecture *, unsigned long *));
-static boolean bfd_mach_o_write_contents PARAMS ((bfd *));
-static int bfd_mach_o_sizeof_headers PARAMS ((bfd *, boolean));
-static asymbol * bfd_mach_o_make_empty_symbol PARAMS ((bfd *));
-static int bfd_mach_o_write_header PARAMS ((bfd *, bfd_mach_o_header *));
-static int bfd_mach_o_read_header PARAMS ((bfd *, bfd_mach_o_header *));
-static asection * bfd_mach_o_make_bfd_section PARAMS ((bfd *, bfd_mach_o_section *));
-static int bfd_mach_o_scan_read_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
-static int bfd_mach_o_scan_write_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
-static int bfd_mach_o_scan_write_symtab_symbols PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_thread PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dylinker PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dylib PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_prebound_dylib PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_thread PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_symtab PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dysymtab PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_symtab PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_segment PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_segment PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_command PARAMS ((bfd *, bfd_mach_o_load_command *));
-static void bfd_mach_o_flatten_sections PARAMS ((bfd *));
-static const char * bfd_mach_o_i386_flavour_string PARAMS ((unsigned int));
-static const char * bfd_mach_o_ppc_flavour_string PARAMS ((unsigned int));
-
-/* The flags field of a section structure is separated into two parts a section
- type and section attributes. The section types are mutually exclusive (it
- can only have one type) but the section attributes are not (it may have more
- than one attribute). */
-
-#define SECTION_TYPE 0x000000ff /* 256 section types. */
-#define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes. */
-
-/* Constants for the section attributes part of the flags field of a section
- structure. */
-
-#define SECTION_ATTRIBUTES_USR 0xff000000 /* User-settable attributes. */
-#define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* Section contains only true machine instructions. */
-#define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* System setable attributes. */
-#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* Section contains some machine instructions. */
-#define S_ATTR_EXT_RELOC 0x00000200 /* Section has external relocation entries. */
-#define S_ATTR_LOC_RELOC 0x00000100 /* Section has local relocation entries. */
-
-#define N_STAB 0xe0
-#define N_TYPE 0x1e
-#define N_EXT 0x01
-#define N_UNDF 0x0
-#define N_ABS 0x2
-#define N_SECT 0xe
-#define N_INDR 0xa
-
-boolean
-bfd_mach_o_valid (abfd)
- bfd *abfd;
+#define FILE_ALIGN(off, algn) \
+ (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
+
+static bfd_boolean
+bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
+
+unsigned int
+bfd_mach_o_version (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata = NULL;
+
+ BFD_ASSERT (bfd_mach_o_valid (abfd));
+ mdata = bfd_mach_o_get_data (abfd);
+
+ return mdata->header.version;
+}
+
+bfd_boolean
+bfd_mach_o_valid (bfd *abfd)
{
if (abfd == NULL || abfd->xvec == NULL)
- return 0;
+ return FALSE;
- if (! ((abfd->xvec == &mach_o_be_vec)
- || (abfd->xvec == &mach_o_le_vec)
- || (abfd->xvec == &mach_o_fat_vec)))
- return 0;
+ if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
+ return FALSE;
+
+ if (bfd_mach_o_get_data (abfd) == NULL)
+ return FALSE;
+ return TRUE;
+}
+
+static INLINE bfd_boolean
+mach_o_wide_p (bfd_mach_o_header *header)
+{
+ switch (header->version)
+ {
+ case 1:
+ return FALSE;
+ case 2:
+ return TRUE;
+ default:
+ BFD_FAIL ();
+ return FALSE;
+ }
+}
+
+static INLINE bfd_boolean
+bfd_mach_o_wide_p (bfd *abfd)
+{
+ return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
+}
+
+/* Tables to translate well known Mach-O segment/section names to bfd
+ names. Use of canonical names (such as .text or .debug_frame) is required
+ by gdb. */
+
+/* __TEXT Segment. */
+static const mach_o_section_name_xlat text_section_names_xlat[] =
+ {
+ { ".text", "__text",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
+ { ".const", "__const",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".static_const", "__static_const",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".cstring", "__cstring",
+ SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
+ BFD_MACH_O_S_CSTRING_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".literal4", "__literal4",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".literal8", "__literal8",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 3},
+ { ".literal16", "__literal16",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 4},
+ { ".constructor", "__constructor",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".destructor", "__destructor",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".eh_frame", "__eh_frame",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
+ BFD_MACH_O_S_ATTR_LIVE_SUPPORT
+ | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
+ | BFD_MACH_O_S_ATTR_NO_TOC, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __DATA Segment. */
+static const mach_o_section_name_xlat data_section_names_xlat[] =
+ {
+ { ".data", "__data",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".bss", "__bss",
+ SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".const_data", "__const",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".static_data", "__static_data",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".mod_init_func", "__mod_init_func",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".mod_term_func", "__mod_term_func",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".dyld", "__dyld",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".cfstring", "__cfstring",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __DWARF Segment. */
+static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
+ {
+ { ".debug_frame", "__debug_frame",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_info", "__debug_info",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_abbrev", "__debug_abbrev",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_aranges", "__debug_aranges",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_macinfo", "__debug_macinfo",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_line", "__debug_line",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_loc", "__debug_loc",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_pubnames", "__debug_pubnames",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_pubtypes", "__debug_pubtypes",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_str", "__debug_str",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_ranges", "__debug_ranges",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_macro", "__debug_macro",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_gdb_scripts", "__debug_gdb_scri",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __OBJC Segment. */
+static const mach_o_section_name_xlat objc_section_names_xlat[] =
+ {
+ { ".objc_class", "__class",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_meta_class", "__meta_class",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cat_cls_meth", "__cat_cls_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cat_inst_meth", "__cat_inst_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_protocol", "__protocol",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_string_object", "__string_object",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cls_meth", "__cls_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_inst_meth", "__inst_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cls_refs", "__cls_refs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_message_refs", "__message_refs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_symbols", "__symbols",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_category", "__category",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_class_vars", "__class_vars",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_instance_vars", "__instance_vars",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_module_info", "__module_info",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_selector_strs", "__selector_strs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_image_info", "__image_info",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_selector_fixup", "__sel_fixup",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ /* Objc V1 */
+ { ".objc1_class_ext", "__class_ext",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc1_property_list", "__property",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc1_protocol_ext", "__protocol_ext",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+static const mach_o_segment_name_xlat segsec_names_xlat[] =
+ {
+ { "__TEXT", text_section_names_xlat },
+ { "__DATA", data_section_names_xlat },
+ { "__DWARF", dwarf_section_names_xlat },
+ { "__OBJC", objc_section_names_xlat },
+ { NULL, NULL }
+ };
+
+static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
+
+/* For both cases bfd-name => mach-o name and vice versa, the specific target
+ is checked before the generic. This allows a target (e.g. ppc for cstring)
+ to override the generic definition with a more specific one. */
+
+/* Fetch the translation from a Mach-O section designation (segment, section)
+ as a bfd short name, if one exists. Otherwise return NULL.
+
+ Allow the segment and section names to be unterminated 16 byte arrays. */
+
+const mach_o_section_name_xlat *
+bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
+ const char *sectname)
+{
+ const struct mach_o_segment_name_xlat *seg;
+ const mach_o_section_name_xlat *sec;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ /* First try any target-specific translations defined... */
+ if (bed->segsec_names_xlat)
+ for (seg = bed->segsec_names_xlat; seg->segname; seg++)
+ if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
+ for (sec = seg->sections; sec->mach_o_name; sec++)
+ if (strncmp (sec->mach_o_name, sectname,
+ BFD_MACH_O_SECTNAME_SIZE) == 0)
+ return sec;
+
+ /* ... and then the Mach-O generic ones. */
+ for (seg = segsec_names_xlat; seg->segname; seg++)
+ if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
+ for (sec = seg->sections; sec->mach_o_name; sec++)
+ if (strncmp (sec->mach_o_name, sectname,
+ BFD_MACH_O_SECTNAME_SIZE) == 0)
+ return sec;
+
+ return NULL;
+}
+
+/* If the bfd_name for this section is a 'canonical' form for which we
+ know the Mach-O data, return the segment name and the data for the
+ Mach-O equivalent. Otherwise return NULL. */
+
+const mach_o_section_name_xlat *
+bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
+ const char **segname)
+{
+ const struct mach_o_segment_name_xlat *seg;
+ const mach_o_section_name_xlat *sec;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+ *segname = NULL;
+
+ if (bfd_name[0] != '.')
+ return NULL;
+
+ /* First try any target-specific translations defined... */
+ if (bed->segsec_names_xlat)
+ for (seg = bed->segsec_names_xlat; seg->segname; seg++)
+ for (sec = seg->sections; sec->bfd_name; sec++)
+ if (strcmp (bfd_name, sec->bfd_name) == 0)
+ {
+ *segname = seg->segname;
+ return sec;
+ }
+
+ /* ... and then the Mach-O generic ones. */
+ for (seg = segsec_names_xlat; seg->segname; seg++)
+ for (sec = seg->sections; sec->bfd_name; sec++)
+ if (strcmp (bfd_name, sec->bfd_name) == 0)
+ {
+ *segname = seg->segname;
+ return sec;
+ }
+
+ return NULL;
+}
+
+/* Convert Mach-O section name to BFD.
+
+ Try to use standard/canonical names, for which we have tables including
+ default flag settings - which are returned. Otherwise forge a new name
+ in the form "<segmentname>.<sectionname>" this will be prefixed with
+ LC_SEGMENT. if the segment name does not begin with an underscore.
+
+ SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
+ terminated if the name length is exactly 16 bytes - but must be if the name
+ length is less than 16 characters). */
+
+void
+bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
+ const char *secname, const char **name,
+ flagword *flags)
+{
+ const mach_o_section_name_xlat *xlat;
+ char *res;
+ unsigned int len;
+ const char *pfx = "";
+
+ *name = NULL;
+ *flags = SEC_NO_FLAGS;
+
+ /* First search for a canonical name...
+ xlat will be non-null if there is an entry for segname, secname. */
+ xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
+ if (xlat)
+ {
+ len = strlen (xlat->bfd_name);
+ res = bfd_alloc (abfd, len + 1);
+ if (res == NULL)
+ return;
+ memcpy (res, xlat->bfd_name, len+1);
+ *name = res;
+ *flags = xlat->bfd_flags;
+ return;
+ }
+
+ /* ... else we make up a bfd name from the segment concatenated with the
+ section. */
+
+ len = 16 + 1 + 16 + 1;
- if (abfd->tdata.mach_o_data == NULL)
+ /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
+ with an underscore. */
+ if (segname[0] != '_')
+ {
+ static const char seg_pfx[] = "LC_SEGMENT.";
+
+ pfx = seg_pfx;
+ len += sizeof (seg_pfx) - 1;
+ }
+
+ res = bfd_alloc (abfd, len);
+ if (res == NULL)
+ return;
+ snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
+ *name = res;
+}
+
+/* Convert a bfd section name to a Mach-O segment + section name.
+
+ If the name is a canonical one for which we have a Darwin match
+ return the translation table - which contains defaults for flags,
+ type, attribute and default alignment data.
+
+ Otherwise, expand the bfd_name (assumed to be in the form
+ "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
+
+static const mach_o_section_name_xlat *
+bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sect,
+ bfd_mach_o_section *section)
+{
+ const mach_o_section_name_xlat *xlat;
+ const char *name = bfd_section_name (sect);
+ const char *segname;
+ const char *dot;
+ unsigned int len;
+ unsigned int seglen;
+ unsigned int seclen;
+
+ memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
+ memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
+
+ /* See if is a canonical name ... */
+ xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
+ if (xlat)
+ {
+ strcpy (section->segname, segname);
+ strcpy (section->sectname, xlat->mach_o_name);
+ return xlat;
+ }
+
+ /* .. else we convert our constructed one back to Mach-O.
+ Strip LC_SEGMENT. prefix, if present. */
+ if (strncmp (name, "LC_SEGMENT.", 11) == 0)
+ name += 11;
+
+ /* Find a dot. */
+ dot = strchr (name, '.');
+ len = strlen (name);
+
+ /* Try to split name into segment and section names. */
+ if (dot && dot != name)
+ {
+ seglen = dot - name;
+ seclen = len - (dot + 1 - name);
+
+ if (seglen <= BFD_MACH_O_SEGNAME_SIZE
+ && seclen <= BFD_MACH_O_SECTNAME_SIZE)
+ {
+ memcpy (section->segname, name, seglen);
+ section->segname[seglen] = 0;
+ memcpy (section->sectname, dot + 1, seclen);
+ section->sectname[seclen] = 0;
+ return NULL;
+ }
+ }
+
+ /* The segment and section names are both missing - don't make them
+ into dots. */
+ if (dot && dot == name)
+ return NULL;
+
+ /* Just duplicate the name into both segment and section. */
+ if (len > 16)
+ len = 16;
+ memcpy (section->segname, name, len);
+ section->segname[len] = 0;
+ memcpy (section->sectname, name, len);
+ section->sectname[len] = 0;
+ return NULL;
+}
+
+/* Return the size of an entry for section SEC.
+ Must be called only for symbol pointer section and symbol stubs
+ sections. */
+
+unsigned int
+bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
+{
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ return bfd_mach_o_wide_p (abfd) ? 8 : 4;
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ return sec->reserved2;
+ default:
+ BFD_FAIL ();
+ return 0;
+ }
+}
+
+/* Return the number of indirect symbols for a section.
+ Must be called only for symbol pointer section and symbol stubs
+ sections. */
+
+unsigned int
+bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
+{
+ unsigned int elsz;
+
+ elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
+ if (elsz == 0)
return 0;
- return 1;
+ else
+ return sec->size / elsz;
+}
+
+/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
+
+static void
+bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ if (mdata->last_command != NULL)
+ mdata->last_command->next = cmd;
+ else
+ mdata->first_command = cmd;
+ mdata->last_command = cmd;
+ cmd->next = NULL;
}
/* Copy any private info we understand from the input symbol
to the output symbol. */
-static boolean
-bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol)
- bfd *ibfd ATTRIBUTE_UNUSED;
- asymbol *isymbol ATTRIBUTE_UNUSED;
- bfd *obfd ATTRIBUTE_UNUSED;
- asymbol *osymbol ATTRIBUTE_UNUSED;
+bfd_boolean
+bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
+ asymbol *isymbol,
+ bfd *obfd ATTRIBUTE_UNUSED,
+ asymbol *osymbol)
{
- return true;
+ bfd_mach_o_asymbol *os, *is;
+
+ os = (bfd_mach_o_asymbol *)osymbol;
+ is = (bfd_mach_o_asymbol *)isymbol;
+ os->n_type = is->n_type;
+ os->n_sect = is->n_sect;
+ os->n_desc = is->n_desc;
+ os->symbol.udata.i = is->symbol.udata.i;
+
+ return TRUE;
}
/* Copy any private info we understand from the input section
to the output section. */
-static boolean
-bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection)
- bfd *ibfd ATTRIBUTE_UNUSED;
- asection *isection ATTRIBUTE_UNUSED;
- bfd *obfd ATTRIBUTE_UNUSED;
- asection *osection ATTRIBUTE_UNUSED;
+bfd_boolean
+bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
+ bfd *obfd, asection *osection)
+{
+ bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
+ bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
+
+ if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
+ || obfd->xvec->flavour != bfd_target_mach_o_flavour)
+ return TRUE;
+
+ BFD_ASSERT (is != NULL && os != NULL);
+
+ os->flags = is->flags;
+ os->reserved1 = is->reserved1;
+ os->reserved2 = is->reserved2;
+ os->reserved3 = is->reserved3;
+
+ return TRUE;
+}
+
+static const char *
+cputype (unsigned long value)
+{
+ switch (value)
+ {
+ case BFD_MACH_O_CPU_TYPE_VAX: return "VAX";
+ case BFD_MACH_O_CPU_TYPE_MC680x0: return "MC68k";
+ case BFD_MACH_O_CPU_TYPE_I386: return "I386";
+ case BFD_MACH_O_CPU_TYPE_MIPS: return "MIPS";
+ case BFD_MACH_O_CPU_TYPE_MC98000: return "MC98k";
+ case BFD_MACH_O_CPU_TYPE_HPPA: return "HPPA";
+ case BFD_MACH_O_CPU_TYPE_ARM: return "ARM";
+ case BFD_MACH_O_CPU_TYPE_MC88000: return "MC88K";
+ case BFD_MACH_O_CPU_TYPE_SPARC: return "SPARC";
+ case BFD_MACH_O_CPU_TYPE_I860: return "I860";
+ case BFD_MACH_O_CPU_TYPE_ALPHA: return "ALPHA";
+ case BFD_MACH_O_CPU_TYPE_POWERPC: return "PPC";
+ case BFD_MACH_O_CPU_TYPE_POWERPC_64: return "PPC64";
+ case BFD_MACH_O_CPU_TYPE_X86_64: return "X86_64";
+ case BFD_MACH_O_CPU_TYPE_ARM64: return "ARM64";
+ default: return _("<unknown>");
+ }
+}
+
+static const char *
+cpusubtype (unsigned long cpu_type, unsigned long cpu_subtype)
+{
+ static char buffer[128];
+
+ buffer[0] = 0;
+ switch (cpu_subtype & BFD_MACH_O_CPU_SUBTYPE_MASK)
+ {
+ case 0:
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_LIB64:
+ sprintf (buffer, " (LIB64)"); break;
+ default:
+ sprintf (buffer, _("<unknown mask flags>")); break;
+ }
+
+ cpu_subtype &= ~ BFD_MACH_O_CPU_SUBTYPE_MASK;
+
+ switch (cpu_type)
+ {
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ case BFD_MACH_O_CPU_TYPE_I386:
+ switch (cpu_subtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_X86_ALL:
+ return strcat (buffer, " (X86_ALL)");
+ default:
+ break;
+ }
+ break;
+
+ case BFD_MACH_O_CPU_TYPE_ARM:
+ switch (cpu_subtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
+ return strcat (buffer, " (ARM_ALL)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
+ return strcat (buffer, " (ARM_V4T)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
+ return strcat (buffer, " (ARM_V6)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
+ return strcat (buffer, " (ARM_V5TEJ)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
+ return strcat (buffer, " (ARM_XSCALE)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
+ return strcat (buffer, " (ARM_V7)");
+ default:
+ break;
+ }
+ break;
+
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ switch (cpu_subtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL:
+ return strcat (buffer, " (ARM64_ALL)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM64_V8:
+ return strcat (buffer, " (ARM64_V8)");
+ default:
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if (cpu_subtype != 0)
+ return strcat (buffer, _(" (<unknown>)"));
+
+ return buffer;
+}
+
+bfd_boolean
+bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void *ptr)
{
- return true;
+ FILE * file = (FILE *) ptr;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ fprintf (file, _(" MACH-O header:\n"));
+ fprintf (file, _(" magic: %#lx\n"), (long) mdata->header.magic);
+ fprintf (file, _(" cputype: %#lx (%s)\n"), (long) mdata->header.cputype,
+ cputype (mdata->header.cputype));
+ fprintf (file, _(" cpusubtype: %#lx%s\n"), (long) mdata->header.cpusubtype,
+ cpusubtype (mdata->header.cputype, mdata->header.cpusubtype));
+ fprintf (file, _(" filetype: %#lx\n"), (long) mdata->header.filetype);
+ fprintf (file, _(" ncmds: %#lx\n"), (long) mdata->header.ncmds);
+ fprintf (file, _(" sizeocmds: %#lx\n"), (long) mdata->header.sizeofcmds);
+ fprintf (file, _(" flags: %#lx\n"), (long) mdata->header.flags);
+ fprintf (file, _(" version: %x\n"), mdata->header.version);
+
+ return TRUE;
}
/* Copy any private info we understand from the input bfd
to the output bfd. */
-static boolean
-bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+bfd_boolean
+bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
{
+ bfd_mach_o_data_struct *imdata;
+ bfd_mach_o_data_struct *omdata;
+ bfd_mach_o_load_command *icmd;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
+ || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
+ return TRUE;
+
BFD_ASSERT (bfd_mach_o_valid (ibfd));
BFD_ASSERT (bfd_mach_o_valid (obfd));
- obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
- obfd->tdata.mach_o_data->ibfd = ibfd;
- return true;
+ imdata = bfd_mach_o_get_data (ibfd);
+ omdata = bfd_mach_o_get_data (obfd);
+
+ /* Copy header flags. */
+ omdata->header.flags = imdata->header.flags;
+
+ /* PR 23299. Copy the cputype. */
+ if (imdata->header.cputype != omdata->header.cputype)
+ {
+ if (omdata->header.cputype == 0)
+ omdata->header.cputype = imdata->header.cputype;
+ else if (imdata->header.cputype != 0)
+ /* Urg - what has happened ? */
+ _bfd_error_handler (_("incompatible cputypes in mach-o files: %ld vs %ld"),
+ (long) imdata->header.cputype,
+ (long) omdata->header.cputype);
+ }
+
+ /* Copy the cpusubtype. */
+ omdata->header.cpusubtype = imdata->header.cpusubtype;
+
+ /* Copy commands. */
+ for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
+ {
+ bfd_mach_o_load_command *ocmd;
+
+ switch (icmd->type)
+ {
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ case BFD_MACH_O_LC_DYLD_INFO:
+ /* Command is copied. */
+ ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
+ if (ocmd == NULL)
+ return FALSE;
+
+ /* Copy common fields. */
+ ocmd->type = icmd->type;
+ ocmd->type_required = icmd->type_required;
+ ocmd->offset = 0;
+ ocmd->len = icmd->len;
+ break;
+
+ default:
+ /* Command is not copied. */
+ continue;
+ break;
+ }
+
+ switch (icmd->type)
+ {
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ {
+ bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
+ bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
+
+ ody->name_offset = idy->name_offset;
+ ody->timestamp = idy->timestamp;
+ ody->current_version = idy->current_version;
+ ody->compatibility_version = idy->compatibility_version;
+ ody->name_str = idy->name_str;
+ }
+ break;
+
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ {
+ bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
+ bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
+
+ ody->name_offset = idy->name_offset;
+ ody->name_str = idy->name_str;
+ }
+ break;
+
+ case BFD_MACH_O_LC_DYLD_INFO:
+ {
+ bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
+ bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
+
+ if (bfd_mach_o_read_dyld_content (ibfd, idy))
+ {
+ ody->rebase_size = idy->rebase_size;
+ ody->rebase_content = idy->rebase_content;
+
+ ody->bind_size = idy->bind_size;
+ ody->bind_content = idy->bind_content;
+
+ ody->weak_bind_size = idy->weak_bind_size;
+ ody->weak_bind_content = idy->weak_bind_content;
+
+ ody->lazy_bind_size = idy->lazy_bind_size;
+ ody->lazy_bind_content = idy->lazy_bind_content;
+
+ ody->export_size = idy->export_size;
+ ody->export_content = idy->export_content;
+ }
+ /* PR 17512L: file: 730e492d. */
+ else
+ {
+ ody->rebase_size =
+ ody->bind_size =
+ ody->weak_bind_size =
+ ody->lazy_bind_size =
+ ody->export_size = 0;
+ ody->rebase_content =
+ ody->bind_content =
+ ody->weak_bind_content =
+ ody->lazy_bind_content =
+ ody->export_content = NULL;
+ }
+ }
+ break;
+
+ default:
+ /* That command should be handled. */
+ abort ();
+ }
+
+ /* Insert command. */
+ bfd_mach_o_append_command (obfd, ocmd);
+ }
+
+ return TRUE;
}
-static long
-bfd_mach_o_count_symbols (abfd)
- bfd *abfd;
+/* This allows us to set up to 32 bits of flags (unless we invent some
+ fiendish scheme to subdivide). For now, we'll just set the file flags
+ without error checking - just overwrite. */
+
+bfd_boolean
+bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
{
- bfd_mach_o_data_struct *mdata = NULL;
- long nsyms = 0;
- unsigned long i;
-
- BFD_ASSERT (bfd_mach_o_valid (abfd));
- mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- for (i = 0; i < mdata->header.ncmds; i++)
- if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
- {
- bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
- nsyms += sym->nsyms;
- }
+ if (!mdata)
+ return FALSE;
- return nsyms;
+ mdata->header.flags = flags;
+ return TRUE;
}
+/* Count the total number of symbols. */
+
static long
-bfd_mach_o_get_symtab_upper_bound (abfd)
- bfd *abfd;
+bfd_mach_o_count_symbols (bfd *abfd)
{
- long nsyms = bfd_mach_o_count_symbols (abfd);
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- if (nsyms < 0)
- return nsyms;
+ if (mdata->symtab == NULL)
+ return 0;
+ return mdata->symtab->nsyms;
+}
+
+long
+bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
+{
+ long nsyms = bfd_mach_o_count_symbols (abfd);
return ((nsyms + 1) * sizeof (asymbol *));
}
-static long
-bfd_mach_o_get_symtab (abfd, alocation)
- bfd *abfd;
- asymbol **alocation;
+long
+bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
long nsyms = bfd_mach_o_count_symbols (abfd);
- asymbol **csym = alocation;
- unsigned long i, j;
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
+ unsigned long j;
if (nsyms < 0)
return nsyms;
- for (i = 0; i < mdata->header.ncmds; i++)
+ if (nsyms == 0)
+ {
+ /* Do not try to read symbols if there are none. */
+ alocation[0] = NULL;
+ return 0;
+ }
+
+ if (!bfd_mach_o_read_symtab_symbols (abfd))
+ {
+ _bfd_error_handler
+ (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
+ return 0;
+ }
+
+ BFD_ASSERT (sym->symbols != NULL);
+
+ for (j = 0; j < sym->nsyms; j++)
+ alocation[j] = &sym->symbols[j].symbol;
+
+ alocation[j] = NULL;
+
+ return nsyms;
+}
+
+/* Create synthetic symbols for indirect symbols. */
+
+long
+bfd_mach_o_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount ATTRIBUTE_UNUSED,
+ asymbol **dynsyms ATTRIBUTE_UNUSED,
+ asymbol **ret)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
+ bfd_mach_o_symtab_command *symtab = mdata->symtab;
+ asymbol *s;
+ char * s_start;
+ char * s_end;
+ unsigned long count, i, j, n;
+ size_t size;
+ char *names;
+ char *nul_name;
+ const char stub [] = "$stub";
+
+ *ret = NULL;
+
+ /* Stop now if no symbols or no indirect symbols. */
+ if (dysymtab == NULL || dysymtab->nindirectsyms == 0
+ || symtab == NULL || symtab->symbols == NULL)
+ return 0;
+
+ /* We need to allocate a bfd symbol for every indirect symbol and to
+ allocate the memory for its name. */
+ count = dysymtab->nindirectsyms;
+ size = count * sizeof (asymbol) + 1;
+
+ for (j = 0; j < count; j++)
+ {
+ const char * strng;
+ unsigned int isym = dysymtab->indirect_syms[j];
+
+ /* Some indirect symbols are anonymous. */
+ if (isym < symtab->nsyms && (strng = symtab->symbols[isym].symbol.name))
+ /* PR 17512: file: f5b8eeba. */
+ size += strnlen (strng, symtab->strsize - (strng - symtab->strtab)) + sizeof (stub);
+ }
+
+ s_start = bfd_malloc (size);
+ s = *ret = (asymbol *) s_start;
+ if (s == NULL)
+ return -1;
+ names = (char *) (s + count);
+ nul_name = names;
+ *names++ = 0;
+ s_end = s_start + size;
+
+ n = 0;
+ for (i = 0; i < mdata->nsects; i++)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
+ unsigned int first, last;
+ bfd_vma addr;
+ bfd_vma entry_size;
+
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ /* Only these sections have indirect symbols. */
+ first = sec->reserved1;
+ last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
+ addr = sec->addr;
+ entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
+
+ /* PR 17512: file: 08e15eec. */
+ if (first >= count || last >= count || first > last)
+ goto fail;
+
+ for (j = first; j < last; j++)
+ {
+ unsigned int isym = dysymtab->indirect_syms[j];
+
+ /* PR 17512: file: 04d64d9b. */
+ if (((char *) s) + sizeof (* s) > s_end)
+ goto fail;
+
+ s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
+ s->section = sec->bfdsection;
+ s->value = addr - sec->addr;
+ s->udata.p = NULL;
+
+ if (isym < symtab->nsyms
+ && symtab->symbols[isym].symbol.name)
+ {
+ const char *sym = symtab->symbols[isym].symbol.name;
+ size_t len;
+
+ s->name = names;
+ len = strlen (sym);
+ /* PR 17512: file: 47dfd4d2. */
+ if (names + len >= s_end)
+ goto fail;
+ memcpy (names, sym, len);
+ names += len;
+ /* PR 17512: file: 18f340a4. */
+ if (names + sizeof (stub) >= s_end)
+ goto fail;
+ memcpy (names, stub, sizeof (stub));
+ names += sizeof (stub);
+ }
+ else
+ s->name = nul_name;
+
+ addr += entry_size;
+ s++;
+ n++;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+ return n;
+
+ fail:
+ free (s_start);
+ * ret = NULL;
+ return -1;
+}
+
+void
+bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *symbol,
+ symbol_info *ret)
+{
+ bfd_symbol_info (symbol, ret);
+}
+
+void
+bfd_mach_o_print_symbol (bfd *abfd,
+ void * afile,
+ asymbol *symbol,
+ bfd_print_symbol_type how)
+{
+ FILE *file = (FILE *) afile;
+ const char *name;
+ bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
+
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ fprintf (file, "%s", symbol->name);
+ break;
+ default:
+ bfd_print_symbol_vandf (abfd, (void *) file, symbol);
+ if (asym->n_type & BFD_MACH_O_N_STAB)
+ name = bfd_get_stab_name (asym->n_type);
+ else
+ switch (asym->n_type & BFD_MACH_O_N_TYPE)
+ {
+ case BFD_MACH_O_N_UNDF:
+ if (symbol->value == 0)
+ name = "UND";
+ else
+ name = "COM";
+ break;
+ case BFD_MACH_O_N_ABS:
+ name = "ABS";
+ break;
+ case BFD_MACH_O_N_INDR:
+ name = "INDR";
+ break;
+ case BFD_MACH_O_N_PBUD:
+ name = "PBUD";
+ break;
+ case BFD_MACH_O_N_SECT:
+ name = "SECT";
+ break;
+ default:
+ name = "???";
+ break;
+ }
+ if (name == NULL)
+ name = "";
+ fprintf (file, " %02x %-6s %02x %04x",
+ asym->n_type, name, asym->n_sect, asym->n_desc);
+ if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
+ && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
+ fprintf (file, " [%s]", symbol->section->name);
+ fprintf (file, " %s", symbol->name);
+ }
+}
+
+static void
+bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
+ bfd_mach_o_cpu_subtype msubtype,
+ enum bfd_architecture *type,
+ unsigned long *subtype)
+{
+ *subtype = bfd_arch_unknown;
+
+ switch (mtype)
+ {
+ case BFD_MACH_O_CPU_TYPE_VAX:
+ *type = bfd_arch_vax;
+ break;
+ case BFD_MACH_O_CPU_TYPE_MC680x0:
+ *type = bfd_arch_m68k;
+ break;
+ case BFD_MACH_O_CPU_TYPE_I386:
+ *type = bfd_arch_i386;
+ *subtype = bfd_mach_i386_i386;
+ break;
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ *type = bfd_arch_i386;
+ *subtype = bfd_mach_x86_64;
+ break;
+ case BFD_MACH_O_CPU_TYPE_MIPS:
+ *type = bfd_arch_mips;
+ break;
+ case BFD_MACH_O_CPU_TYPE_MC98000:
+ *type = bfd_arch_m98k;
+ break;
+ case BFD_MACH_O_CPU_TYPE_HPPA:
+ *type = bfd_arch_hppa;
+ break;
+ case BFD_MACH_O_CPU_TYPE_ARM:
+ *type = bfd_arch_arm;
+ switch (msubtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
+ *subtype = bfd_mach_arm_4T;
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
+ *subtype = bfd_mach_arm_4T; /* Best fit ? */
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
+ *subtype = bfd_mach_arm_5TE;
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
+ *subtype = bfd_mach_arm_XScale;
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
+ *subtype = bfd_mach_arm_5TE; /* Best fit ? */
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
+ default:
+ break;
+ }
+ break;
+ case BFD_MACH_O_CPU_TYPE_SPARC:
+ *type = bfd_arch_sparc;
+ *subtype = bfd_mach_sparc;
+ break;
+ case BFD_MACH_O_CPU_TYPE_ALPHA:
+ *type = bfd_arch_alpha;
+ break;
+ case BFD_MACH_O_CPU_TYPE_POWERPC:
+ *type = bfd_arch_powerpc;
+ *subtype = bfd_mach_ppc;
+ break;
+ case BFD_MACH_O_CPU_TYPE_POWERPC_64:
+ *type = bfd_arch_powerpc;
+ *subtype = bfd_mach_ppc64;
+ break;
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ *type = bfd_arch_aarch64;
+ *subtype = bfd_mach_aarch64;
+ break;
+ default:
+ *type = bfd_arch_unknown;
+ break;
+ }
+}
+
+/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
+ number of bytes written or -1 in case of error. */
+
+static int
+bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
+{
+ if (len % 4 != 0)
+ {
+ char pad[4] = {0,0,0,0};
+ unsigned int padlen = 4 - (len % 4);
+
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
+
+ return padlen;
+ }
+ else
+ return 0;
+}
+
+/* Likewise, but for a command. */
+
+static int
+bfd_mach_o_pad_command (bfd *abfd, unsigned int len)
+{
+ unsigned int align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
+
+ if (len % align != 0)
+ {
+ char pad[8] = {0};
+ unsigned int padlen = align - (len % align);
+
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
+
+ return padlen;
+ }
+ else
+ return 0;
+}
+
+static bfd_boolean
+bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
+{
+ struct mach_o_header_external raw;
+ unsigned int size;
+
+ size = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
+
+ bfd_h_put_32 (abfd, header->magic, raw.magic);
+ bfd_h_put_32 (abfd, header->cputype, raw.cputype);
+ bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
+ bfd_h_put_32 (abfd, header->filetype, raw.filetype);
+ bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
+ bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
+ bfd_h_put_32 (abfd, header->flags, raw.flags);
+
+ if (mach_o_wide_p (header))
+ bfd_h_put_32 (abfd, header->reserved, raw.reserved);
+
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bwrite (&raw, size, abfd) != size)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_thread_command *cmd = &command->command.thread;
+ unsigned int i;
+ struct mach_o_thread_command_external raw;
+ unsigned int offset;
+
+ BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
+ || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
+
+ offset = BFD_MACH_O_LC_SIZE;
+ for (i = 0; i < cmd->nflavours; i++)
+ {
+ BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
+ BFD_ASSERT (cmd->flavours[i].offset ==
+ (command->offset + offset + BFD_MACH_O_LC_SIZE));
+
+ bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
+ bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
+
+ if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ offset += cmd->flavours[i].size + sizeof (raw);
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
+ struct mach_o_str_command_external raw;
+ unsigned int namelen;
+
+ bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ namelen = strlen (cmd->name_str) + 1;
+ if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+
+ if (bfd_mach_o_pad_command (abfd, namelen) < 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dylib_command *cmd = &command->command.dylib;
+ struct mach_o_dylib_command_external raw;
+ unsigned int namelen;
+
+ bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
+ bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
+ bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
+ bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ namelen = strlen (cmd->name_str) + 1;
+ if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+
+ if (bfd_mach_o_pad_command (abfd, namelen) < 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_main_command *cmd = &command->command.main;
+ struct mach_o_entry_point_command_external raw;
+
+ bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
+ bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
+ struct mach_o_dyld_info_command_external raw;
+
+ bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
+ bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
+ bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
+ bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
+ bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
+ bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
+ bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
+ bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
+ bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
+ bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ if (cmd->rebase_size != 0)
+ if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->rebase_content, cmd->rebase_size, abfd) !=
+ cmd->rebase_size))
+ return FALSE;
+
+ if (cmd->bind_size != 0)
+ if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->bind_content, cmd->bind_size, abfd) !=
+ cmd->bind_size))
+ return FALSE;
+
+ if (cmd->weak_bind_size != 0)
+ if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
+ cmd->weak_bind_size))
+ return FALSE;
+
+ if (cmd->lazy_bind_size != 0)
+ if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
+ cmd->lazy_bind_size))
+ return FALSE;
+
+ if (cmd->export_size != 0)
+ if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->export_content, cmd->export_size, abfd) !=
+ cmd->export_size))
+ return FALSE;
+
+ return TRUE;
+}
+
+long
+bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *asect)
+{
+#if SIZEOF_LONG == SIZEOF_INT
+ if (asect->reloc_count >= LONG_MAX / sizeof (arelent *))
+ {
+ bfd_set_error (bfd_error_file_too_big);
+ return -1;
+ }
+#endif
+ return (asect->reloc_count + 1) * sizeof (arelent *);
+}
+
+/* In addition to the need to byte-swap the symbol number, the bit positions
+ of the fields in the relocation information vary per target endian-ness. */
+
+void
+bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
+ unsigned char *fields)
+{
+ unsigned char info = fields[3];
+
+ if (bfd_big_endian (abfd))
+ {
+ rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
+ rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
+ rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
+ rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
+ & BFD_MACH_O_LENGTH_MASK;
+ rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
+ }
+ else
+ {
+ rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
+ rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
+ rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
+ rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
+ & BFD_MACH_O_LENGTH_MASK;
+ rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
+ }
+}
+
+/* Set syms_ptr_ptr and addend of RES. */
+
+bfd_boolean
+bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
+ bfd_mach_o_reloc_info *reloc,
+ arelent *res, asymbol **syms)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int num;
+ asymbol **sym;
+
+ /* Non-scattered relocation. */
+ reloc->r_scattered = 0;
+ res->addend = 0;
+
+ num = reloc->r_value;
+
+ if (reloc->r_extern)
+ {
+ /* PR 17512: file: 8396-1185-0.004. */
+ if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
+ sym = bfd_und_section_ptr->symbol_ptr_ptr;
+ else if (syms == NULL)
+ sym = bfd_und_section_ptr->symbol_ptr_ptr;
+ else
+ /* An external symbol number. */
+ sym = syms + num;
+ }
+ else if (num == 0x00ffffff || num == 0)
+ {
+ /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
+ is generic code, we don't know wether this is really a PAIR.
+ This value is almost certainly not a valid section number, hence
+ this specific case to avoid an assertion failure.
+ Target specific swap_reloc_in routine should adjust that. */
+ sym = bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+ else
+ {
+ /* PR 17512: file: 006-2964-0.004. */
+ if (num > mdata->nsects)
+ {
+ _bfd_error_handler (_("\
+malformed mach-o reloc: section index is greater than the number of sections"));
+ return FALSE;
+ }
+
+ /* A section number. */
+ sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
+ /* For a symbol defined in section S, the addend (stored in the
+ binary) contains the address of the section. To comply with
+ bfd convention, subtract the section address.
+ Use the address from the header, so that the user can modify
+ the vma of the section. */
+ res->addend = -mdata->sections[num - 1]->addr;
+ }
+
+ /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
+ in the lower 16bits of the address value. So we have to find the
+ 'symbol' from the preceding reloc. We do this even though the
+ section symbol is probably not needed here, because NULL symbol
+ values cause an assert in generic BFD code. This must be done in
+ the PPC swap_reloc_in routine. */
+ res->sym_ptr_ptr = sym;
+
+ return TRUE;
+}
+
+/* Do most of the work for canonicalize_relocs on RAW: create internal
+ representation RELOC and set most fields of RES using symbol table SYMS.
+ Each target still has to set the howto of RES and possibly adjust other
+ fields.
+ Previously the Mach-O hook point was simply swap_in, but some targets
+ (like arm64) don't follow the generic rules (symnum is a value for the
+ non-scattered relocation ADDEND). */
+
+bfd_boolean
+bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
+ struct mach_o_reloc_info_external *raw,
+ bfd_mach_o_reloc_info *reloc,
+ arelent *res, asymbol **syms)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_vma addr;
+
+ addr = bfd_get_32 (abfd, raw->r_address);
+ res->sym_ptr_ptr = NULL;
+ res->addend = 0;
+
+ if (addr & BFD_MACH_O_SR_SCATTERED)
+ {
+ unsigned int j;
+ bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
+
+ /* Scattered relocation, can't be extern. */
+ reloc->r_scattered = 1;
+ reloc->r_extern = 0;
+
+ /* Extract section and offset from r_value (symnum). */
+ reloc->r_value = symnum;
+ /* FIXME: This breaks when a symbol in a reloc exactly follows the
+ end of the data for the section (e.g. in a calculation of section
+ data length). At present, the symbol will end up associated with
+ the following section or, if it falls within alignment padding, as
+ null - which will assert later. */
+ for (j = 0; j < mdata->nsects; j++)
+ {
+ bfd_mach_o_section *sect = mdata->sections[j];
+ if (symnum >= sect->addr && symnum < sect->addr + sect->size)
+ {
+ res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
+ res->addend = symnum - sect->addr;
+ break;
+ }
+ }
+
+ /* Extract the info and address fields from r_address. */
+ reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
+ reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
+ reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
+ reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
+ res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
+ }
+ else
+ {
+ /* Non-scattered relocation. */
+ reloc->r_scattered = 0;
+ reloc->r_address = addr;
+ res->address = addr;
+
+ /* The value and info fields have to be extracted dependent on target
+ endian-ness. */
+ bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
+
+ if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
+ res, syms))
+ return FALSE;
+ }
+
+ /* We have set up a reloc with all the information present, so the swapper
+ can modify address, value and addend fields, if necessary, to convey
+ information in the generic BFD reloc that is mach-o specific. */
+
+ return TRUE;
+}
+
+static int
+bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
+ unsigned long count,
+ arelent *res, asymbol **syms)
+{
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+ unsigned long i;
+ struct mach_o_reloc_info_external *native_relocs = NULL;
+ bfd_size_type native_size;
+
+ /* Allocate and read relocs. */
+ native_size = count * BFD_MACH_O_RELENT_SIZE;
+
+ /* PR 17512: file: 09477b57. */
+ if (native_size < count)
+ goto err;
+
+ native_relocs =
+ (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
+ if (native_relocs == NULL)
+ return -1;
+
+ if (bfd_seek (abfd, filepos, SEEK_SET) != 0
+ || bfd_bread (native_relocs, native_size, abfd) != native_size)
+ goto err;
+
+ for (i = 0; i < count; i++)
+ {
+ if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
+ &res[i], syms, res))
+ goto err;
+ }
+ free (native_relocs);
+ return i;
+
+ err:
+ free (native_relocs);
+ if (bfd_get_error () == bfd_error_no_error)
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+}
+
+long
+bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
+ arelent **rels, asymbol **syms)
+{
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+ unsigned long i;
+ arelent *res;
+
+ if (asect->reloc_count == 0)
+ return 0;
+
+ /* No need to go further if we don't know how to read relocs. */
+ if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
+ return 0;
+
+ if (asect->relocation == NULL)
+ {
+ if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
+ return -1;
+ res = bfd_malloc (asect->reloc_count * sizeof (arelent));
+ if (res == NULL)
+ return -1;
+
+ if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
+ asect->reloc_count, res, syms) < 0)
+ {
+ free (res);
+ return -1;
+ }
+ asect->relocation = res;
+ }
+
+ res = asect->relocation;
+ for (i = 0; i < asect->reloc_count; i++)
+ rels[i] = &res[i];
+ rels[i] = NULL;
+
+ return i;
+}
+
+long
+bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ if (mdata->dysymtab == NULL)
+ return 1;
+ return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
+ * sizeof (arelent *);
+}
+
+long
+bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
+ struct bfd_symbol **syms)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+ unsigned long i;
+ arelent *res;
+
+ if (dysymtab == NULL)
+ return 0;
+ if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
+ return 0;
+
+ /* No need to go further if we don't know how to read relocs. */
+ if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
+ return 0;
+
+ if (mdata->dyn_reloc_cache == NULL)
+ {
+ if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
+ < (dysymtab->nextrel + dysymtab->nlocrel))
+ return -1;
+
+ res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
+ * sizeof (arelent));
+ if (res == NULL)
+ return -1;
+
+ if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
+ dysymtab->nextrel, res, syms) < 0)
+ {
+ free (res);
+ return -1;
+ }
+
+ if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
+ dysymtab->nlocrel,
+ res + dysymtab->nextrel, syms) < 0)
+ {
+ free (res);
+ return -1;
+ }
+
+ mdata->dyn_reloc_cache = res;
+ }
+
+ res = mdata->dyn_reloc_cache;
+ for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
+ rels[i] = &res[i];
+ rels[i] = NULL;
+ return i;
+}
+
+/* In addition to the need to byte-swap the symbol number, the bit positions
+ of the fields in the relocation information vary per target endian-ness. */
+
+static void
+bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
+ bfd_mach_o_reloc_info *rel)
+{
+ unsigned char info = 0;
+
+ BFD_ASSERT (rel->r_type <= 15);
+ BFD_ASSERT (rel->r_length <= 3);
+
+ if (bfd_big_endian (abfd))
+ {
+ fields[0] = (rel->r_value >> 16) & 0xff;
+ fields[1] = (rel->r_value >> 8) & 0xff;
+ fields[2] = rel->r_value & 0xff;
+ info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
+ info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
+ info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
+ info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
+ }
+ else
+ {
+ fields[2] = (rel->r_value >> 16) & 0xff;
+ fields[1] = (rel->r_value >> 8) & 0xff;
+ fields[0] = rel->r_value & 0xff;
+ info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
+ info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
+ info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
+ info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
+ }
+ fields[3] = info;
+}
+
+static bfd_boolean
+bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
+{
+ unsigned int i;
+ arelent **entries;
+ asection *sec;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ sec = section->bfdsection;
+ if (sec->reloc_count == 0)
+ return TRUE;
+
+ if (bed->_bfd_mach_o_swap_reloc_out == NULL)
+ return TRUE;
+
+ if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
+ return FALSE;
+
+ /* Convert and write. */
+ entries = section->bfdsection->orelocation;
+ for (i = 0; i < section->nreloc; i++)
+ {
+ arelent *rel = entries[i];
+ struct mach_o_reloc_info_external raw;
+ bfd_mach_o_reloc_info info, *pinfo = &info;
+
+ /* Convert relocation to an intermediate representation. */
+ if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
+ return FALSE;
+
+ /* Lower the relocation info. */
+ if (pinfo->r_scattered)
+ {
+ unsigned long v;
+
+ v = BFD_MACH_O_SR_SCATTERED
+ | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
+ | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
+ | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
+ | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
+ /* Note: scattered relocs have field in reverse order... */
+ bfd_put_32 (abfd, v, raw.r_address);
+ bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
+ }
+ else
+ {
+ bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
+ bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
+ pinfo);
+ }
+
+ if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
+ != BFD_MACH_O_RELENT_SIZE)
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
+{
+ struct mach_o_section_32_external raw;
+
+ memcpy (raw.sectname, section->sectname, 16);
+ memcpy (raw.segname, section->segname, 16);
+ bfd_h_put_32 (abfd, section->addr, raw.addr);
+ bfd_h_put_32 (abfd, section->size, raw.size);
+ bfd_h_put_32 (abfd, section->offset, raw.offset);
+ bfd_h_put_32 (abfd, section->align, raw.align);
+ bfd_h_put_32 (abfd, section->reloff, raw.reloff);
+ bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
+ bfd_h_put_32 (abfd, section->flags, raw.flags);
+ bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
+ bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
+
+ if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
+ != BFD_MACH_O_SECTION_SIZE)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
+{
+ struct mach_o_section_64_external raw;
+
+ memcpy (raw.sectname, section->sectname, 16);
+ memcpy (raw.segname, section->segname, 16);
+ bfd_h_put_64 (abfd, section->addr, raw.addr);
+ bfd_h_put_64 (abfd, section->size, raw.size);
+ bfd_h_put_32 (abfd, section->offset, raw.offset);
+ bfd_h_put_32 (abfd, section->align, raw.align);
+ bfd_h_put_32 (abfd, section->reloff, raw.reloff);
+ bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
+ bfd_h_put_32 (abfd, section->flags, raw.flags);
+ bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
+ bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
+ bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
+
+ if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
+ != BFD_MACH_O_SECTION_64_SIZE)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ struct mach_o_segment_command_32_external raw;
+ bfd_mach_o_segment_command *seg = &command->command.segment;
+ bfd_mach_o_section *sec;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ if (!bfd_mach_o_write_relocs (abfd, sec))
+ return FALSE;
+
+ memcpy (raw.segname, seg->segname, 16);
+ bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
+ bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
+ bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
+ bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
+ bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
+ bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
+ bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
+ bfd_h_put_32 (abfd, seg->flags, raw.flags);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ if (!bfd_mach_o_write_section_32 (abfd, sec))
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ struct mach_o_segment_command_64_external raw;
+ bfd_mach_o_segment_command *seg = &command->command.segment;
+ bfd_mach_o_section *sec;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
+
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ if (!bfd_mach_o_write_relocs (abfd, sec))
+ return FALSE;
+
+ memcpy (raw.segname, seg->segname, 16);
+ bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
+ bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
+ bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
+ bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
+ bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
+ bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
+ bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
+ bfd_h_put_32 (abfd, seg->flags, raw.flags);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ if (!bfd_mach_o_write_section_64 (abfd, sec))
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned long i;
+ unsigned int wide = bfd_mach_o_wide_p (abfd);
+ struct bfd_strtab_hash *strtab;
+ asymbol **symbols = bfd_get_outsymbols (abfd);
+ int padlen;
+
+ /* Write the symbols first. */
+ if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
+ return FALSE;
+
+ strtab = _bfd_stringtab_init ();
+ if (strtab == NULL)
+ return FALSE;
+
+ if (sym->nsyms > 0)
+ /* Although we don't strictly need to do this, for compatibility with
+ Darwin system tools, actually output an empty string for the index
+ 0 entry. */
+ _bfd_stringtab_add (strtab, "", TRUE, FALSE);
+
+ for (i = 0; i < sym->nsyms; i++)
+ {
+ bfd_size_type str_index;
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+
+ if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
+ /* An index of 0 always means the empty string. */
+ str_index = 0;
+ else
+ {
+ str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
+
+ if (str_index == (bfd_size_type) -1)
+ goto err;
+ }
+
+ if (wide)
+ {
+ struct mach_o_nlist_64_external raw;
+
+ bfd_h_put_32 (abfd, str_index, raw.n_strx);
+ bfd_h_put_8 (abfd, s->n_type, raw.n_type);
+ bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
+ bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
+ bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
+ raw.n_value);
+
+ if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ goto err;
+ }
+ else
+ {
+ struct mach_o_nlist_external raw;
+
+ bfd_h_put_32 (abfd, str_index, raw.n_strx);
+ bfd_h_put_8 (abfd, s->n_type, raw.n_type);
+ bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
+ bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
+ bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
+ raw.n_value);
+
+ if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ goto err;
+ }
+ }
+ sym->strsize = _bfd_stringtab_size (strtab);
+ sym->stroff = mdata->filelen;
+ mdata->filelen += sym->strsize;
+
+ if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
+ goto err;
+
+ if (!_bfd_stringtab_emit (abfd, strtab))
+ goto err;
+
+ /* Pad string table. */
+ padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
+ if (padlen < 0)
+ return FALSE;
+ mdata->filelen += padlen;
+ sym->strsize += padlen;
+
+ return TRUE;
+
+ err:
+ _bfd_stringtab_free (strtab);
+ sym->strsize = 0;
+ return FALSE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_symtab_command *sym = &command->command.symtab;
+ struct mach_o_symtab_command_external raw;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+
+ /* The command. */
+ bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
+ bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
+ bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
+ bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Count the number of indirect symbols in the image.
+ Requires that the sections are in their final order. */
+
+static unsigned int
+bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
+{
+ unsigned int i;
+ unsigned int nisyms = 0;
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
+
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
+ break;
+ default:
+ break;
+ }
+ }
+ return nisyms;
+}
+
+/* Create the dysymtab. */
+
+static bfd_boolean
+bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ /* TODO:
+ We are not going to try and fill these in yet and, moreover, we are
+ going to bail if they are already set. */
+ if (cmd->nmodtab != 0
+ || cmd->ntoc != 0
+ || cmd->nextrefsyms != 0)
+ {
+ _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
+ " implemented for dysymtab commands."));
+ return FALSE;
+ }
+
+ cmd->ilocalsym = 0;
+
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ asymbol **symbols = bfd_get_outsymbols (abfd);
+ unsigned long i;
+
+ /* Count the number of each kind of symbol. */
+ for (i = 0; i < bfd_get_symcount (abfd); ++i)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+ if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
+ break;
+ }
+ cmd->nlocalsym = i;
+ cmd->iextdefsym = i;
+ for (; i < bfd_get_symcount (abfd); ++i)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+ if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
+ break;
+ }
+ cmd->nextdefsym = i - cmd->nlocalsym;
+ cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
+ cmd->nundefsym = bfd_get_symcount (abfd)
+ - cmd->nlocalsym
+ - cmd->nextdefsym;
+ }
+ else
+ {
+ cmd->nlocalsym = 0;
+ cmd->iextdefsym = 0;
+ cmd->nextdefsym = 0;
+ cmd->iundefsym = 0;
+ cmd->nundefsym = 0;
+ }
+
+ cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
+ if (cmd->nindirectsyms > 0)
+ {
+ unsigned i;
+ unsigned n;
+
+ mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
+ cmd->indirectsymoff = mdata->filelen;
+ mdata->filelen += cmd->nindirectsyms * 4;
+
+ if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
+ return FALSE;
+ cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
+ if (cmd->indirect_syms == NULL)
+ return FALSE;
+
+ n = 0;
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
+
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ {
+ unsigned j, num;
+ bfd_mach_o_asymbol **isyms = sec->indirect_syms;
+
+ num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
+ if (isyms == NULL || num == 0)
+ break;
+ /* Record the starting index in the reserved1 field. */
+ sec->reserved1 = n;
+ for (j = 0; j < num; j++, n++)
+ {
+ if (isyms[j] == NULL)
+ cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
+ else if (isyms[j]->symbol.section == bfd_abs_section_ptr
+ && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
+ cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
+ | BFD_MACH_O_INDIRECT_SYM_ABS;
+ else
+ cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+/* Write a dysymtab command.
+ TODO: Possibly coalesce writes of smaller objects. */
+
+static bfd_boolean
+bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
+
+ if (cmd->nmodtab != 0)
+ {
+ unsigned int i;
+
+ if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->nmodtab; i++)
+ {
+ bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
+ unsigned int iinit;
+ unsigned int ninit;
+
+ iinit = module->iinit & 0xffff;
+ iinit |= ((module->iterm & 0xffff) << 16);
+
+ ninit = module->ninit & 0xffff;
+ ninit |= ((module->nterm & 0xffff) << 16);
+
+ if (bfd_mach_o_wide_p (abfd))
+ {
+ struct mach_o_dylib_module_64_external w;
+
+ bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
+ bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
+ bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
+ bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
+ bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
+ bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
+ bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
+ bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
+ bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
+ bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
+ bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
+ bfd_h_put_64 (abfd, module->objc_module_info_addr,
+ &w.objc_module_info_addr);
+ bfd_h_put_32 (abfd, module->objc_module_info_size,
+ &w.objc_module_info_size);
+
+ if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
+ return FALSE;
+ }
+ else
+ {
+ struct mach_o_dylib_module_external n;
+
+ bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
+ bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
+ bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
+ bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
+ bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
+ bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
+ bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
+ bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
+ bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
+ bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
+ bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
+ bfd_h_put_32 (abfd, module->objc_module_info_addr,
+ &n.objc_module_info_addr);
+ bfd_h_put_32 (abfd, module->objc_module_info_size,
+ &n.objc_module_info_size);
+
+ if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
+ return FALSE;
+ }
+ }
+ }
+
+ if (cmd->ntoc != 0)
+ {
+ unsigned int i;
+
+ if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->ntoc; i++)
+ {
+ struct mach_o_dylib_table_of_contents_external raw;
+ bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
+
+ bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
+ bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
+
+ if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+ }
+ }
+
+ if (cmd->nindirectsyms > 0)
+ {
+ unsigned int i;
+
+ if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->nindirectsyms; ++i)
+ {
+ unsigned char raw[4];
+
+ bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
+ if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+ }
+ }
+
+ if (cmd->nextrefsyms != 0)
+ {
+ unsigned int i;
+
+ if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->nextrefsyms; i++)
+ {
+ unsigned long v;
+ unsigned char raw[4];
+ bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
+
+ /* Fields isym and flags are written as bit-fields, thus we need
+ a specific processing for endianness. */
+
+ if (bfd_big_endian (abfd))
+ {
+ v = ((ref->isym & 0xffffff) << 8);
+ v |= ref->flags & 0xff;
+ }
+ else
+ {
+ v = ref->isym & 0xffffff;
+ v |= ((ref->flags & 0xff) << 24);
+ }
+
+ bfd_h_put_32 (abfd, v, raw);
+ if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+ }
+ }
+
+ /* The command. */
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
+ return FALSE;
+ else
+ {
+ struct mach_o_dysymtab_command_external raw;
+
+ bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
+ bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
+ bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
+ bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
+ bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
+ bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
+ bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
+ bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
+ bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
+ bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
+ bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
+ bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
+ bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
+ bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
+ bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
+ bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
+ bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
+ bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
+
+ if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static unsigned
+bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
+{
+ unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
+
+ /* Just leave debug symbols where they are (pretend they are local, and
+ then they will just be sorted on position). */
+ if (s->n_type & BFD_MACH_O_N_STAB)
+ return 0;
+
+ /* Local (we should never see an undefined local AFAICT). */
+ if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
+ return 0;
+
+ /* Common symbols look like undefined externs. */
+ if (mtyp == BFD_MACH_O_N_UNDF)
+ return 2;
+
+ /* A defined non-local, non-debug symbol. */
+ return 1;
+}
+
+static int
+bfd_mach_o_cf_symbols (const void *a, const void *b)
+{
+ bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
+ bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
+ unsigned int soa, sob;
+
+ soa = bfd_mach_o_primary_symbol_sort_key (sa);
+ sob = bfd_mach_o_primary_symbol_sort_key (sb);
+ if (soa < sob)
+ return -1;
+
+ if (soa > sob)
+ return 1;
+
+ /* If it's local or stab, just preserve the input order. */
+ if (soa == 0)
+ {
+ if (sa->symbol.udata.i < sb->symbol.udata.i)
+ return -1;
+ if (sa->symbol.udata.i > sb->symbol.udata.i)
+ return 1;
+
+ /* This is probably an error. */
+ return 0;
+ }
+
+ /* The second sort key is name. */
+ return strcmp (sa->symbol.name, sb->symbol.name);
+}
+
+/* Process the symbols.
+
+ This should be OK for single-module files - but it is not likely to work
+ for multi-module shared libraries.
+
+ (a) If the application has not filled in the relevant mach-o fields, make
+ an estimate.
+
+ (b) Order them, like this:
+ ( i) local.
+ (unsorted)
+ ( ii) external defined
+ (by name)
+ (iii) external undefined/common
+ (by name)
+ ( iv) common
+ (by name)
+*/
+
+static bfd_boolean
+bfd_mach_o_mangle_symbols (bfd *abfd)
+{
+ unsigned long i;
+ asymbol **symbols = bfd_get_outsymbols (abfd);
+
+ if (symbols == NULL || bfd_get_symcount (abfd) == 0)
+ return TRUE;
+
+ for (i = 0; i < bfd_get_symcount (abfd); i++)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+
+ /* We use this value, which is out-of-range as a symbol index, to signal
+ that the mach-o-specific data are not filled in and need to be created
+ from the bfd values. It is much preferable for the application to do
+ this, since more meaningful diagnostics can be made that way. */
+
+ if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
+ {
+ /* No symbol information has been set - therefore determine
+ it from the bfd symbol flags/info. */
+ if (s->symbol.section == bfd_abs_section_ptr)
+ s->n_type = BFD_MACH_O_N_ABS;
+ else if (s->symbol.section == bfd_und_section_ptr)
+ {
+ s->n_type = BFD_MACH_O_N_UNDF;
+ if (s->symbol.flags & BSF_WEAK)
+ s->n_desc |= BFD_MACH_O_N_WEAK_REF;
+ /* mach-o automatically makes undefined symbols extern. */
+ s->n_type |= BFD_MACH_O_N_EXT;
+ s->symbol.flags |= BSF_GLOBAL;
+ }
+ else if (s->symbol.section == bfd_com_section_ptr)
+ {
+ s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
+ s->symbol.flags |= BSF_GLOBAL;
+ }
+ else
+ s->n_type = BFD_MACH_O_N_SECT;
+ }
+
+ /* Update external symbol bit in case objcopy changed it. */
+ if (s->symbol.flags & BSF_GLOBAL)
+ s->n_type |= BFD_MACH_O_N_EXT;
+ else
+ s->n_type &= ~BFD_MACH_O_N_EXT;
+
+ /* Put the section index in, where required. */
+ if ((s->symbol.section != bfd_abs_section_ptr
+ && s->symbol.section != bfd_und_section_ptr
+ && s->symbol.section != bfd_com_section_ptr)
+ || ((s->n_type & BFD_MACH_O_N_STAB) != 0
+ && s->symbol.name == NULL))
+ s->n_sect = s->symbol.section->output_section->target_index;
+
+ /* Number to preserve order for local and debug syms. */
+ s->symbol.udata.i = i;
+ }
+
+ /* Sort the symbols. */
+ qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
+ sizeof (asymbol *), bfd_mach_o_cf_symbols);
+
+ for (i = 0; i < bfd_get_symcount (abfd); ++i)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+ s->symbol.udata.i = i; /* renumber. */
+ }
+
+ return TRUE;
+}
+
+/* We build a flat table of sections, which can be re-ordered if necessary.
+ Fill in the section number and other mach-o-specific data. */
+
+static bfd_boolean
+bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
+{
+ asection *sec;
+ unsigned target_index;
+ unsigned nsect;
+
+ nsect = bfd_count_sections (abfd);
+
+ /* Don't do it if it's already set - assume the application knows what it's
+ doing. */
+ if (mdata->nsects == nsect
+ && (mdata->nsects == 0 || mdata->sections != NULL))
+ return TRUE;
+
+ /* We need to check that this can be done... */
+ if (nsect > 255)
+ {
+ _bfd_error_handler (_("mach-o: there are too many sections (%u)"
+ " maximum is 255,\n"), nsect);
+ return FALSE;
+ }
+
+ mdata->nsects = nsect;
+ mdata->sections = bfd_alloc2 (abfd,
+ mdata->nsects, sizeof (bfd_mach_o_section *));
+ if (mdata->sections == NULL)
+ return FALSE;
+
+ /* Create Mach-O sections.
+ Section type, attribute and align should have been set when the
+ section was created - either read in or specified. */
+ target_index = 0;
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ unsigned bfd_align = bfd_section_alignment (sec);
+ bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
+
+ mdata->sections[target_index] = msect;
+
+ msect->addr = bfd_section_vma (sec);
+ msect->size = bfd_section_size (sec);
+
+ /* Use the largest alignment set, in case it was bumped after the
+ section was created. */
+ msect->align = msect->align > bfd_align ? msect->align : bfd_align;
+
+ msect->offset = 0;
+ sec->target_index = ++target_index;
+ }
+
+ return TRUE;
+}
+
+bfd_boolean
+bfd_mach_o_write_contents (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_load_command *cmd;
+ bfd_mach_o_symtab_command *symtab = NULL;
+ bfd_mach_o_dysymtab_command *dysymtab = NULL;
+ bfd_mach_o_segment_command *linkedit = NULL;
+
+ /* Make the commands, if not already present. */
+ if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
+ return FALSE;
+ abfd->output_has_begun = TRUE;
+
+ /* Write the header. */
+ if (!bfd_mach_o_write_header (abfd, &mdata->header))
+ return FALSE;
+
+ /* First pass: allocate the linkedit segment. */
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ switch (cmd->type)
+ {
+ case BFD_MACH_O_LC_SEGMENT_64:
+ case BFD_MACH_O_LC_SEGMENT:
+ if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
+ linkedit = &cmd->command.segment;
+ break;
+ case BFD_MACH_O_LC_SYMTAB:
+ symtab = &cmd->command.symtab;
+ break;
+ case BFD_MACH_O_LC_DYSYMTAB:
+ dysymtab = &cmd->command.dysymtab;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ {
+ bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
+
+ if (di->rebase_size != 0)
+ {
+ di->rebase_off = mdata->filelen;
+ mdata->filelen += di->rebase_size;
+ }
+ if (di->bind_size != 0)
+ {
+ di->bind_off = mdata->filelen;
+ mdata->filelen += di->bind_size;
+ }
+ if (di->weak_bind_size != 0)
+ {
+ di->weak_bind_off = mdata->filelen;
+ mdata->filelen += di->weak_bind_size;
+ }
+ if (di->lazy_bind_size != 0)
+ {
+ di->lazy_bind_off = mdata->filelen;
+ mdata->filelen += di->lazy_bind_size;
+ }
+ if (di->export_size != 0)
+ {
+ di->export_off = mdata->filelen;
+ mdata->filelen += di->export_size;
+ }
+ }
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ case BFD_MACH_O_LC_MAIN:
+ /* Nothing to do. */
+ break;
+ default:
+ _bfd_error_handler
+ (_("unable to allocate data for load command %#x"),
+ cmd->type);
+ break;
+ }
+
+ /* Specially handle symtab and dysymtab. */
+
+ /* Pre-allocate the symbol table (but not the string table). The reason
+ is that the dysymtab is after the symbol table but before the string
+ table (required by the native strip tool). */
+ if (symtab != NULL)
+ {
+ unsigned int symlen;
+ unsigned int wide = bfd_mach_o_wide_p (abfd);
+
+ symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
+
+ /* Align for symbols. */
+ mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
+ symtab->symoff = mdata->filelen;
+
+ symtab->nsyms = bfd_get_symcount (abfd);
+ mdata->filelen += symtab->nsyms * symlen;
+ }
+
+ /* Build the dysymtab. */
+ if (dysymtab != NULL)
+ if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
+ return FALSE;
+
+ /* Write symtab and strtab. */
+ if (symtab != NULL)
+ if (!bfd_mach_o_write_symtab_content (abfd, symtab))
+ return FALSE;
+
+ /* Adjust linkedit size. */
+ if (linkedit != NULL)
+ {
+ /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
+
+ linkedit->vmsize = mdata->filelen - linkedit->fileoff;
+ /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
+ linkedit->filesize = mdata->filelen - linkedit->fileoff;
+
+ linkedit->initprot = BFD_MACH_O_PROT_READ;
+ linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
+ }
+
+ /* Second pass: write commands. */
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ {
+ struct mach_o_load_command_external raw;
+ unsigned long typeflag;
+
+ typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
+
+ bfd_h_put_32 (abfd, typeflag, raw.cmd);
+ bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
+
+ if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
+ || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
+ return FALSE;
+
+ switch (cmd->type)
+ {
+ case BFD_MACH_O_LC_SEGMENT:
+ if (!bfd_mach_o_write_segment_32 (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_SEGMENT_64:
+ if (!bfd_mach_o_write_segment_64 (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_SYMTAB:
+ if (!bfd_mach_o_write_symtab (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_DYSYMTAB:
+ if (!bfd_mach_o_write_dysymtab (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_THREAD:
+ case BFD_MACH_O_LC_UNIXTHREAD:
+ if (!bfd_mach_o_write_thread (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ if (!bfd_mach_o_write_dylib (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ if (!bfd_mach_o_write_dylinker (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_MAIN:
+ if (!bfd_mach_o_write_main (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ if (!bfd_mach_o_write_dyld_info (abfd, cmd))
+ return FALSE;
+ break;
+ default:
+ _bfd_error_handler
+ (_("unable to write unknown load command %#x"),
+ cmd->type);
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+static void
+bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
+ bfd_mach_o_section *s)
+{
+ if (seg->sect_head == NULL)
+ seg->sect_head = s;
+ else
+ seg->sect_tail->next = s;
+ seg->sect_tail = s;
+}
+
+/* Create section Mach-O flags from BFD flags. */
+
+static void
+bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec)
+{
+ flagword bfd_flags;
+ bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
+
+ /* Create default flags. */
+ bfd_flags = bfd_section_flags (sec);
+ if ((bfd_flags & SEC_CODE) == SEC_CODE)
+ s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
+ | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
+ | BFD_MACH_O_S_REGULAR;
+ else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
+ s->flags = BFD_MACH_O_S_ZEROFILL;
+ else if (bfd_flags & SEC_DEBUGGING)
+ s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
+ else
+ s->flags = BFD_MACH_O_S_REGULAR;
+}
+
+static bfd_boolean
+bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int i, j;
+
+ seg->vmaddr = 0;
+ seg->fileoff = mdata->filelen;
+ seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
+ seg->maxprot = seg->initprot;
+
+ /* Append sections to the segment.
+
+ This is a little tedious, we have to honor the need to account zerofill
+ sections after all the rest. This forces us to do the calculation of
+ total vmsize in three passes so that any alignment increments are
+ properly accounted. */
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *s = mdata->sections[i];
+ asection *sec = s->bfdsection;
+
+ /* Although we account for zerofill section sizes in vm order, they are
+ placed in the file in source sequence. */
+ bfd_mach_o_append_section_to_segment (seg, s);
+ s->offset = 0;
+
+ /* Zerofill sections have zero file size & offset, the only content
+ written to the file is the symbols. */
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
+ || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ == BFD_MACH_O_S_GB_ZEROFILL))
+ continue;
+
+ /* The Darwin system tools (in MH_OBJECT files, at least) always account
+ sections, even those with zero size. */
+ if (s->size > 0)
+ {
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
+
+ /* MH_OBJECT files have unaligned content. */
+ if (1)
+ {
+ seg->filesize = FILE_ALIGN (seg->filesize, s->align);
+ mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
+ }
+ seg->filesize += s->size;
+
+ /* The system tools write even zero-sized sections with an offset
+ field set to the current file position. */
+ s->offset = mdata->filelen;
+ }
+
+ sec->filepos = s->offset;
+ mdata->filelen += s->size;
+ }
+
+ /* Now pass through again, for zerofill, only now we just update the
+ vmsize, and then for zerofill_GB. */
+ for (j = 0; j < 2; j++)
+ {
+ unsigned int stype;
+
+ if (j == 0)
+ stype = BFD_MACH_O_S_ZEROFILL;
+ else
+ stype = BFD_MACH_O_S_GB_ZEROFILL;
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *s = mdata->sections[i];
+
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
+ continue;
+
+ if (s->size > 0)
+ {
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
+ }
+ }
+ }
+
+ /* Allocate space for the relocations. */
+ mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *ms = mdata->sections[i];
+ asection *sec = ms->bfdsection;
+
+ ms->nreloc = sec->reloc_count;
+ if (ms->nreloc == 0)
+ {
+ /* Clear nreloc and reloff if there is no relocs. */
+ ms->reloff = 0;
+ continue;
+ }
+ sec->rel_filepos = mdata->filelen;
+ ms->reloff = sec->rel_filepos;
+ mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int i;
+ bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
+ bfd_vma vma;
+ bfd_mach_o_section *s;
+
+ seg->vmsize = 0;
+
+ seg->fileoff = mdata->filelen;
+ seg->maxprot = 0;
+ seg->initprot = 0;
+ seg->flags = 0;
+
+ /* Append sections to the segment. We assume they are properly ordered
+ by vma (but we check that). */
+ vma = 0;
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ s = mdata->sections[i];
+
+ /* Consider only sections for this segment. */
+ if (strcmp (seg->segname, s->segname) != 0)
+ continue;
+
+ bfd_mach_o_append_section_to_segment (seg, s);
+
+ if (s->addr < vma)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("section address (%#" PRIx64 ") "
+ "below start of segment (%#" PRIx64 ")"),
+ (uint64_t) s->addr, (uint64_t) vma);
+ return FALSE;
+ }
+
+ vma = s->addr + s->size;
+ }
+
+ /* Set segment file offset: make it page aligned. */
+ vma = seg->sect_head->addr;
+ seg->vmaddr = vma & ~pagemask;
+ if ((mdata->filelen & pagemask) > (vma & pagemask))
+ mdata->filelen += pagemask + 1;
+ seg->fileoff = mdata->filelen & ~pagemask;
+ mdata->filelen = seg->fileoff + (vma & pagemask);
+
+ /* Set section file offset. */
+ for (s = seg->sect_head; s != NULL; s = s->next)
+ {
+ asection *sec = s->bfdsection;
+ flagword flags = bfd_section_flags (sec);
+
+ /* Adjust segment size. */
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
+
+ /* File offset and length. */
+ seg->filesize = FILE_ALIGN (seg->filesize, s->align);
+
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
+ && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ != BFD_MACH_O_S_GB_ZEROFILL))
+ {
+ mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
+
+ s->offset = mdata->filelen;
+ s->bfdsection->filepos = s->offset;
+
+ seg->filesize += s->size;
+ mdata->filelen += s->size;
+ }
+ else
+ {
+ s->offset = 0;
+ s->bfdsection->filepos = 0;
+ }
+
+ /* Set protection. */
+ if (flags & SEC_LOAD)
+ {
+ if (flags & SEC_CODE)
+ seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
+ if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
+ seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
+ }
+
+ /* Relocs shouldn't appear in non-object files. */
+ if (s->bfdsection->reloc_count != 0)
+ return FALSE;
+ }
+
+ /* Set maxprot. */
+ if (seg->initprot != 0)
+ seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
+ else
+ seg->maxprot = 0;
+
+ /* Round segment size (and file size). */
+ seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
+ seg->filesize = (seg->filesize + pagemask) & ~pagemask;
+ mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
+
+ return TRUE;
+}
+
+/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
+ fields in header. */
+
+static bfd_boolean
+bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
+{
+ unsigned wide = mach_o_wide_p (&mdata->header);
+ unsigned int hdrlen;
+ ufile_ptr offset;
+ bfd_mach_o_load_command *cmd;
+ unsigned int align;
+ bfd_boolean ret = TRUE;
+
+ hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
+ align = wide ? 8 - 1 : 4 - 1;
+ offset = hdrlen;
+ mdata->header.ncmds = 0;
+
+ for (cmd = mdata->first_command; cmd; cmd = cmd->next)
+ {
+ mdata->header.ncmds++;
+ cmd->offset = offset;
+
+ switch (cmd->type)
+ {
+ case BFD_MACH_O_LC_SEGMENT_64:
+ cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
+ + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
+ break;
+ case BFD_MACH_O_LC_SEGMENT:
+ cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
+ + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
+ break;
+ case BFD_MACH_O_LC_SYMTAB:
+ cmd->len = sizeof (struct mach_o_symtab_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_DYSYMTAB:
+ cmd->len = sizeof (struct mach_o_dysymtab_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ cmd->len = sizeof (struct mach_o_dylib_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ cmd->command.dylib.name_offset = cmd->len;
+ cmd->len += strlen (cmd->command.dylib.name_str);
+ cmd->len = (cmd->len + align) & ~align;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ cmd->len = sizeof (struct mach_o_str_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ cmd->command.dylinker.name_offset = cmd->len;
+ cmd->len += strlen (cmd->command.dylinker.name_str);
+ cmd->len = (cmd->len + align) & ~align;
+ break;
+ case BFD_MACH_O_LC_MAIN:
+ cmd->len = sizeof (struct mach_o_entry_point_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ cmd->len = sizeof (struct mach_o_dyld_info_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ default:
+ _bfd_error_handler
+ (_("unable to layout unknown load command %#x"),
+ cmd->type);
+ ret = FALSE;
+ break;
+ }
+
+ BFD_ASSERT (cmd->len % (align + 1) == 0);
+ offset += cmd->len;
+ }
+ mdata->header.sizeofcmds = offset - hdrlen;
+ mdata->filelen = offset;
+
+ return ret;
+}
+
+/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
+ segment. */
+
+static void
+bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
+ bfd_mach_o_load_command *cmd,
+ const char *segname, unsigned int nbr_sect)
+{
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ unsigned wide = mach_o_wide_p (&mdata->header);
+
+ /* Init segment command. */
+ cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
+ cmd->type_required = FALSE;
+
+ strcpy (seg->segname, segname);
+ seg->nsects = nbr_sect;
+
+ seg->vmaddr = 0;
+ seg->vmsize = 0;
+
+ seg->fileoff = 0;
+ seg->filesize = 0;
+ seg->maxprot = 0;
+ seg->initprot = 0;
+ seg->flags = 0;
+ seg->sect_head = NULL;
+ seg->sect_tail = NULL;
+}
+
+/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
+ TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
+ and copy functionality. */
+
+bfd_boolean
+bfd_mach_o_build_commands (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned wide = mach_o_wide_p (&mdata->header);
+ unsigned int nbr_segcmd = 0;
+ bfd_mach_o_load_command *commands;
+ unsigned int nbr_commands;
+ int symtab_idx = -1;
+ int dysymtab_idx = -1;
+ int main_idx = -1;
+ unsigned int i;
+
+ /* Return now if already built. */
+ if (mdata->header.ncmds != 0)
+ return TRUE;
+
+ /* Fill in the file type, if not already set. */
+ if (mdata->header.filetype == 0)
+ {
+ if (abfd->flags & EXEC_P)
+ mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
+ else if (abfd->flags & DYNAMIC)
+ mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
+ else
+ mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
+ }
+
+ /* If hasn't already been done, flatten sections list, and sort
+ if/when required. Must be done before the symbol table is adjusted,
+ since that depends on properly numbered sections. */
+ if (mdata->nsects == 0 || mdata->sections == NULL)
+ if (! bfd_mach_o_mangle_sections (abfd, mdata))
+ return FALSE;
+
+ /* Order the symbol table, fill-in/check mach-o specific fields and
+ partition out any indirect symbols. */
+ if (!bfd_mach_o_mangle_symbols (abfd))
+ return FALSE;
+
+ /* Segment commands. */
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
+ {
+ /* Only one segment for all the sections. But the segment is
+ optional if there is no sections. */
+ nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
+ }
+ else
+ {
+ bfd_mach_o_section *prev_sect = NULL;
+
+ /* One pagezero segment and one linkedit segment. */
+ nbr_segcmd = 2;
+
+ /* Create one segment for associated segment name in sections.
+ Assume that sections with the same segment name are consecutive. */
+ for (i = 0; i < mdata->nsects; i++)
+ {
+ bfd_mach_o_section *this_sect = mdata->sections[i];
+
+ if (prev_sect == NULL
+ || strcmp (prev_sect->segname, this_sect->segname) != 0)
+ {
+ nbr_segcmd++;
+ prev_sect = this_sect;
+ }
+ }
+ }
+
+ nbr_commands = nbr_segcmd;
+
+ /* One command for the symbol table (only if there are symbols. */
+ if (bfd_get_symcount (abfd) > 0)
+ symtab_idx = nbr_commands++;
+
+ /* FIXME:
+ This is a rather crude test for whether we should build a dysymtab. */
+ if (bfd_mach_o_should_emit_dysymtab ()
+ && bfd_get_symcount (abfd))
+ {
+ /* If there should be a case where a dysymtab could be emitted without
+ a symtab (seems improbable), this would need amending. */
+ dysymtab_idx = nbr_commands++;
+ }
+
+ /* Add an entry point command. */
+ if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
+ && bfd_get_start_address (abfd) != 0)
+ main_idx = nbr_commands++;
+
+ /* Well, we must have a header, at least. */
+ mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
+
+ /* A bit unusual, but no content is valid;
+ as -n empty.s -o empty.o */
+ if (nbr_commands == 0)
+ {
+ /* Layout commands (well none...) and set headers command fields. */
+ return bfd_mach_o_layout_commands (mdata);
+ }
+
+ /* Create commands for segments (and symtabs), prepend them. */
+ commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
+ if (commands == NULL)
+ return FALSE;
+ for (i = 0; i < nbr_commands - 1; i++)
+ commands[i].next = &commands[i + 1];
+ commands[nbr_commands - 1].next = mdata->first_command;
+ if (mdata->first_command == NULL)
+ mdata->last_command = &commands[nbr_commands - 1];
+ mdata->first_command = &commands[0];
+
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
- {
- bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
+ /* For object file, there is only one segment. */
+ bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
+ }
+ else if (nbr_segcmd != 0)
+ {
+ bfd_mach_o_load_command *cmd;
- if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
- {
- fprintf (stderr, "bfd_mach_o_get_symtab: unable to load symbols for section %lu\n", i);
- return 0;
- }
+ BFD_ASSERT (nbr_segcmd >= 2);
- BFD_ASSERT (sym->symbols != NULL);
+ /* The pagezero. */
+ cmd = &commands[0];
+ bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
- for (j = 0; j < sym->nsyms; j++)
- {
- BFD_ASSERT (csym < (alocation + nsyms));
- *csym++ = &sym->symbols[j];
- }
+ /* Segments from sections. */
+ cmd++;
+ for (i = 0; i < mdata->nsects;)
+ {
+ const char *segname = mdata->sections[i]->segname;
+ unsigned int nbr_sect = 1;
+
+ /* Count number of sections for this segment. */
+ for (i++; i < mdata->nsects; i++)
+ if (strcmp (mdata->sections[i]->segname, segname) == 0)
+ nbr_sect++;
+ else
+ break;
+
+ bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
+ cmd++;
}
- }
- *csym++ = NULL;
-
- return nsyms;
-}
+ /* The linkedit. */
+ bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
+ }
-static void
-bfd_mach_o_get_symbol_info (abfd, symbol, ret)
- bfd *abfd ATTRIBUTE_UNUSED;
- asymbol *symbol;
- symbol_info *ret;
-{
- bfd_symbol_info (symbol, ret);
-}
+ if (symtab_idx >= 0)
+ {
+ /* Init symtab command. */
+ bfd_mach_o_load_command *cmd = &commands[symtab_idx];
-static void
-bfd_mach_o_print_symbol (abfd, afile, symbol, how)
- bfd *abfd;
- PTR afile;
- asymbol *symbol;
- bfd_print_symbol_type how;
-{
- FILE *file = (FILE *) afile;
+ cmd->type = BFD_MACH_O_LC_SYMTAB;
+ cmd->type_required = FALSE;
+ }
- switch (how)
+ /* If required, setup symtab command, see comment above about the quality
+ of this test. */
+ if (dysymtab_idx >= 0)
{
- case bfd_print_symbol_name:
- fprintf (file, "%s", symbol->name);
- break;
- default:
- bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
- fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
- }
-}
+ bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
-static void
-bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype)
- bfd_mach_o_cpu_type mtype;
- bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED;
- enum bfd_architecture *type;
- unsigned long *subtype;
-{
- *subtype = bfd_arch_unknown;
+ cmd->type = BFD_MACH_O_LC_DYSYMTAB;
+ cmd->type_required = FALSE;
+ }
- switch (mtype)
+ /* Create the main command. */
+ if (main_idx >= 0)
{
- case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
- case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
- case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break;
- case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
- case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
- case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
- case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
- case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
- case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break;
- case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
- case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
- case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break;
- default: *type = bfd_arch_unknown; break;
- }
-
- switch (*type)
- {
- case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break;
- case bfd_arch_sparc: *subtype = bfd_mach_sparc; break;
- default:
- *subtype = bfd_arch_unknown;
- }
-}
-
-static boolean
-bfd_mach_o_write_contents (abfd)
- bfd *abfd;
-{
- unsigned int i;
- asection *s;
+ bfd_mach_o_load_command *cmd = &commands[main_idx];
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ cmd->type = BFD_MACH_O_LC_MAIN;
+ cmd->type_required = TRUE;
- /* Write data sections first in case they overlap header data to be
- written later. */
+ cmd->command.main.entryoff = 0;
+ cmd->command.main.stacksize = 0;
+ }
- for (s = abfd->sections; s != (asection *) NULL; s = s->next)
- ;
+ /* Layout commands. */
+ if (! bfd_mach_o_layout_commands (mdata))
+ return FALSE;
-#if 0
- for (i = 0; i < mdata->header.ncmds; i++)
+ /* So, now we have sized the commands and the filelen set to that.
+ Now we can build the segment command and set the section file offsets. */
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
{
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- if (cur->type != BFD_MACH_O_LC_SEGMENT)
- break;
+ for (i = 0; i < nbr_segcmd; i++)
+ if (!bfd_mach_o_build_obj_seg_command
+ (abfd, &commands[i].command.segment))
+ return FALSE;
+ }
+ else
+ {
+ bfd_vma maxvma = 0;
- {
- bfd_mach_o_segment_command *seg = &cur->command.segment;
- char buf[1024];
- bfd_vma nbytes = seg->filesize;
- bfd_vma curoff = seg->fileoff;
+ /* Skip pagezero and linkedit segments. */
+ for (i = 1; i < nbr_segcmd - 1; i++)
+ {
+ bfd_mach_o_segment_command *seg = &commands[i].command.segment;
- while (nbytes > 0)
- {
- bfd_vma thisread = nbytes;
+ if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
+ return FALSE;
- if (thisread > 1024)
- thisread = 1024;
+ if (seg->vmaddr + seg->vmsize > maxvma)
+ maxvma = seg->vmaddr + seg->vmsize;
+ }
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
- return false;
+ /* Set the size of __PAGEZERO. */
+ commands[0].command.segment.vmsize =
+ commands[1].command.segment.vmaddr;
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
- return false;
+ /* Set the vma and fileoff of __LINKEDIT. */
+ commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
+ commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
- nbytes -= thisread;
- curoff += thisread;
- }
- }
- }
-#endif
+ /* Set entry point (once segments have been laid out). */
+ if (main_idx >= 0)
+ commands[main_idx].command.main.entryoff =
+ bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
+ }
- /* Now write header information. */
- if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
- return false;
+ return TRUE;
+}
- for (i = 0; i < mdata->header.ncmds; i++)
- {
- unsigned char buf[8];
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- unsigned long typeflag;
+/* Set the contents of a section. */
- typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
+bfd_boolean
+bfd_mach_o_set_section_contents (bfd *abfd,
+ asection *section,
+ const void * location,
+ file_ptr offset,
+ bfd_size_type count)
+{
+ file_ptr pos;
- bfd_h_put_32 (abfd, typeflag, buf);
- bfd_h_put_32 (abfd, cur->len, buf + 4);
+ /* Trying to write the first section contents will trigger the creation of
+ the load commands if they are not already present. */
+ if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
+ return FALSE;
- bfd_seek (abfd, cur->offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
- return false;
+ if (count == 0)
+ return TRUE;
- 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;
- }
- }
+ pos = section->filepos + offset;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
+ return FALSE;
- return true;
+ return TRUE;
}
-static int
-bfd_mach_o_sizeof_headers (a, b)
- bfd *a ATTRIBUTE_UNUSED;
- boolean b ATTRIBUTE_UNUSED;
+int
+bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info 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 *
+bfd_mach_o_make_empty_symbol (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;
+ asymbol *new_symbol;
+
+ new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
+ if (new_symbol == NULL)
+ return new_symbol;
+ new_symbol->the_bfd = abfd;
+ new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
+ return new_symbol;
}
-static int
-bfd_mach_o_read_header (abfd, header)
- bfd *abfd;
- bfd_mach_o_header *header;
+static bfd_boolean
+bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
{
- unsigned char buf[28];
- bfd_vma (*get32) PARAMS ((const bfd_byte *)) = NULL;
-
- bfd_seek (abfd, 0, SEEK_SET);
+ struct mach_o_header_external raw;
+ unsigned int size;
+ bfd_vma (*get32) (const void *) = NULL;
- if (bfd_bread ((PTR) buf, 28, abfd) != 28)
- return -1;
+ /* Just read the magic number. */
+ if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
+ || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
+ return FALSE;
- if (bfd_getb32 (buf) == 0xfeedface)
+ if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
+ {
+ header->byteorder = BFD_ENDIAN_BIG;
+ header->magic = BFD_MACH_O_MH_MAGIC;
+ header->version = 1;
+ get32 = bfd_getb32;
+ }
+ else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
+ {
+ header->byteorder = BFD_ENDIAN_LITTLE;
+ header->magic = BFD_MACH_O_MH_MAGIC;
+ header->version = 1;
+ get32 = bfd_getl32;
+ }
+ else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
{
header->byteorder = BFD_ENDIAN_BIG;
- header->magic = 0xfeedface;
+ header->magic = BFD_MACH_O_MH_MAGIC_64;
+ header->version = 2;
get32 = bfd_getb32;
}
- else if (bfd_getl32 (buf) == 0xfeedface)
+ else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
{
- header->byteorder = BFD_ENDIAN_LITTLE;
- header->magic = 0xfeedface;
+ header->byteorder = BFD_ENDIAN_LITTLE;
+ header->magic = BFD_MACH_O_MH_MAGIC_64;
+ header->version = 2;
get32 = bfd_getl32;
}
else
{
header->byteorder = BFD_ENDIAN_UNKNOWN;
- return -1;
+ return FALSE;
}
-
- 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;
+ /* Once the size of the header is known, read the full header. */
+ size = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
+
+ if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
+ || bfd_bread (&raw, size, abfd) != size)
+ return FALSE;
+
+ header->cputype = (*get32) (raw.cputype);
+ header->cpusubtype = (*get32) (raw.cpusubtype);
+ header->filetype = (*get32) (raw.filetype);
+ header->ncmds = (*get32) (raw.ncmds);
+ header->sizeofcmds = (*get32) (raw.sizeofcmds);
+ header->flags = (*get32) (raw.flags);
+
+ if (mach_o_wide_p (header))
+ header->reserved = (*get32) (raw.reserved);
+ else
+ header->reserved = 0;
+
+ return TRUE;
}
-static asection *
-bfd_mach_o_make_bfd_section (abfd, section)
- bfd *abfd;
- bfd_mach_o_section *section;
+bfd_boolean
+bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
{
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SEGMENT";
- unsigned int snamelen;
+ bfd_mach_o_section *s;
+ unsigned bfdalign = bfd_section_alignment (sec);
- snamelen = strlen (prefix) + 1
- + strlen (section->segname) + 1
- + strlen (section->sectname) + 1;
+ s = bfd_mach_o_get_mach_o_section (sec);
+ if (s == NULL)
+ {
+ flagword bfd_flags;
+ static const mach_o_section_name_xlat * xlat;
- sname = (char *) bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return NULL;
- sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
+ s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
+ if (s == NULL)
+ return FALSE;
+ sec->used_by_bfd = s;
+ s->bfdsection = sec;
+
+ /* Create the Darwin seg/sect name pair from the bfd name.
+ If this is a canonical name for which a specific paiting exists
+ there will also be defined flags, type, attribute and alignment
+ values. */
+ xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
+ if (xlat != NULL)
+ {
+ s->flags = xlat->macho_sectype | xlat->macho_secattr;
+ s->align = xlat->sectalign > bfdalign ? xlat->sectalign
+ : bfdalign;
+ bfd_set_section_alignment (sec, s->align);
+ bfd_flags = bfd_section_flags (sec);
+ if (bfd_flags == SEC_NO_FLAGS)
+ bfd_set_section_flags (sec, xlat->bfd_flags);
+ }
+ else
+ /* Create default flags. */
+ bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
+ }
- 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;
+ return _bfd_generic_new_section_hook (abfd, sec);
+}
+
+static void
+bfd_mach_o_init_section_from_mach_o (asection *sec, unsigned long prot)
+{
+ flagword flags;
+ bfd_mach_o_section *section;
+
+ flags = bfd_section_flags (sec);
+ section = bfd_mach_o_get_mach_o_section (sec);
+
+ /* TODO: see if we should use the xlat system for doing this by
+ preference and fall back to this for unknown sections. */
+
+ if (flags == SEC_NO_FLAGS)
+ {
+ /* Try to guess flags. */
+ if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
+ flags = SEC_DEBUGGING;
+ else
+ {
+ flags = SEC_ALLOC;
+ if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ != BFD_MACH_O_S_ZEROFILL)
+ {
+ flags |= SEC_LOAD;
+ if (prot & BFD_MACH_O_PROT_EXECUTE)
+ flags |= SEC_CODE;
+ if (prot & BFD_MACH_O_PROT_WRITE)
+ flags |= SEC_DATA;
+ else if (prot & BFD_MACH_O_PROT_READ)
+ flags |= SEC_READONLY;
+ }
+ }
+ }
else
- bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
+ {
+ if ((flags & SEC_DEBUGGING) == 0)
+ flags |= SEC_ALLOC;
+ }
- return bfdsec;
+ if (section->offset != 0)
+ flags |= SEC_HAS_CONTENTS;
+ if (section->nreloc != 0)
+ flags |= SEC_RELOC;
+
+ bfd_set_section_flags (sec, flags);
+
+ sec->vma = section->addr;
+ sec->lma = section->addr;
+ sec->size = section->size;
+ sec->filepos = section->offset;
+ sec->alignment_power = section->align;
+ sec->segment_mark = 0;
+ sec->reloc_count = section->nreloc;
+ sec->rel_filepos = section->reloff;
}
-static int
-bfd_mach_o_scan_read_section (abfd, section, offset)
- bfd *abfd;
- bfd_mach_o_section *section;
- bfd_vma offset;
+static asection *
+bfd_mach_o_make_bfd_section (bfd *abfd,
+ const unsigned char *segname,
+ const unsigned char *sectname)
{
- unsigned char buf[68];
+ const char *sname;
+ flagword flags;
- 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;
+ bfd_mach_o_convert_section_name_to_bfd
+ (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
+ if (sname == NULL)
+ return NULL;
- return 0;
+ return bfd_make_section_anyway_with_flags (abfd, sname, flags);
}
-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 asection *
+bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
+{
+ struct mach_o_section_32_external raw;
+ asection *sec;
+ bfd_mach_o_section *section;
+
+ if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
+ != BFD_MACH_O_SECTION_SIZE)
+ return NULL;
+
+ sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
+ if (sec == NULL)
+ return NULL;
+
+ section = bfd_mach_o_get_mach_o_section (sec);
+ memcpy (section->segname, raw.segname, sizeof (raw.segname));
+ section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
+ memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
+ section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
+ section->addr = bfd_h_get_32 (abfd, raw.addr);
+ section->size = bfd_h_get_32 (abfd, raw.size);
+ section->offset = bfd_h_get_32 (abfd, raw.offset);
+ section->align = bfd_h_get_32 (abfd, raw.align);
+ /* PR 17512: file: 0017eb76. */
+ if (section->align > 64)
+ {
+ _bfd_error_handler
+ (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx, "
+ "using 32 instead"), section->align);
+ section->align = 32;
+ }
+ section->reloff = bfd_h_get_32 (abfd, raw.reloff);
+ section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
+ section->flags = bfd_h_get_32 (abfd, raw.flags);
+ section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
+ section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
+ section->reserved3 = 0;
+
+ bfd_mach_o_init_section_from_mach_o (sec, prot);
+
+ return sec;
}
-static int
-bfd_mach_o_scan_write_symtab_symbols (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static asection *
+bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
{
- bfd_mach_o_symtab_command *sym = &command->command.symtab;
- asymbol *s = NULL;
- unsigned long i;
+ struct mach_o_section_64_external raw;
+ asection *sec;
+ bfd_mach_o_section *section;
- 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;
+ if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
+ != BFD_MACH_O_SECTION_64_SIZE)
+ return NULL;
- 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);
+ sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
+ if (sec == NULL)
+ return NULL;
- 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;
- }
+ section = bfd_mach_o_get_mach_o_section (sec);
+ memcpy (section->segname, raw.segname, sizeof (raw.segname));
+ section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
+ memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
+ section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
+ section->addr = bfd_h_get_64 (abfd, raw.addr);
+ section->size = bfd_h_get_64 (abfd, raw.size);
+ section->offset = bfd_h_get_32 (abfd, raw.offset);
+ section->align = bfd_h_get_32 (abfd, raw.align);
+ if (section->align > 64)
+ {
+ _bfd_error_handler
+ (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx, "
+ "using 32 instead"), section->align);
+ section->align = 32;
}
+ section->reloff = bfd_h_get_32 (abfd, raw.reloff);
+ section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
+ section->flags = bfd_h_get_32 (abfd, raw.flags);
+ section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
+ section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
+ section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
- return 0;
+ bfd_mach_o_init_section_from_mach_o (sec, prot);
+
+ return sec;
}
-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];
+static asection *
+bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
+{
+ if (wide)
+ return bfd_mach_o_read_section_64 (abfd, prot);
+ else
+ return bfd_mach_o_read_section_32 (abfd, prot);
+}
+
+static bfd_boolean
+bfd_mach_o_read_symtab_symbol (bfd *abfd,
+ bfd_mach_o_symtab_command *sym,
+ bfd_mach_o_asymbol *s,
+ unsigned long i)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int wide = mach_o_wide_p (&mdata->header);
+ unsigned int symwidth =
+ wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
+ unsigned int symoff = sym->symoff + (i * symwidth);
+ struct mach_o_nlist_64_external raw;
unsigned char type = -1;
unsigned char section = -1;
short desc = -1;
- long value = -1;
+ symvalue 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)
+ if (bfd_seek (abfd, symoff, SEEK_SET) != 0
+ || bfd_bread (&raw, symwidth, abfd) != symwidth)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
- 12, (unsigned long) symoff);
- return -1;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
+ symwidth, symoff);
+ return FALSE;
}
- 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);
+ stroff = bfd_h_get_32 (abfd, raw.n_strx);
+ type = bfd_h_get_8 (abfd, raw.n_type);
+ symtype = type & BFD_MACH_O_N_TYPE;
+ section = bfd_h_get_8 (abfd, raw.n_sect);
+ desc = bfd_h_get_16 (abfd, raw.n_desc);
+ if (wide)
+ value = bfd_h_get_64 (abfd, raw.n_value);
+ else
+ value = bfd_h_get_32 (abfd, raw.n_value);
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;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
+ stroff,
+ sym->strsize);
+ return FALSE;
}
- s->the_bfd = abfd;
- s->name = sym->strtab + stroff;
- s->value = value;
- s->udata.i = (type << 24) | (section << 16) | desc;
- s->flags = 0x0;
+ s->symbol.the_bfd = abfd;
+ s->symbol.name = sym->strtab + stroff;
+ s->symbol.value = value;
+ s->symbol.flags = 0x0;
+ s->symbol.udata.i = i;
+ s->n_type = type;
+ s->n_sect = section;
+ s->n_desc = desc;
if (type & BFD_MACH_O_N_STAB)
{
- s->flags |= BSF_DEBUGGING;
- s->section = bfd_und_section_ptr;
+ s->symbol.flags |= BSF_DEBUGGING;
+ s->symbol.section = bfd_und_section_ptr;
+ switch (type)
+ {
+ case N_FUN:
+ case N_STSYM:
+ case N_LCSYM:
+ case N_BNSYM:
+ case N_SLINE:
+ case N_ENSYM:
+ case N_ECOMM:
+ case N_ECOML:
+ case N_GSYM:
+ if ((section > 0) && (section <= mdata->nsects))
+ {
+ s->symbol.section = mdata->sections[section - 1]->bfdsection;
+ s->symbol.value =
+ s->symbol.value - mdata->sections[section - 1]->addr;
+ }
+ break;
+ }
}
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;
- }
+ if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
+ s->symbol.flags |= BSF_GLOBAL;
+ else
+ s->symbol.flags |= BSF_LOCAL;
switch (symtype)
{
case BFD_MACH_O_N_UNDF:
- s->section = bfd_und_section_ptr;
+ if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
+ && s->symbol.value != 0)
+ {
+ /* A common symbol. */
+ s->symbol.section = bfd_com_section_ptr;
+ s->symbol.flags = BSF_NO_FLAGS;
+ }
+ else
+ {
+ s->symbol.section = bfd_und_section_ptr;
+ if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
+ s->symbol.flags |= BSF_WEAK;
+ }
break;
case BFD_MACH_O_N_PBUD:
- s->section = bfd_und_section_ptr;
+ s->symbol.section = bfd_und_section_ptr;
break;
case BFD_MACH_O_N_ABS:
- s->section = bfd_abs_section_ptr;
+ s->symbol.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;
+ s->symbol.section = mdata->sections[section - 1]->bfdsection;
+ s->symbol.value =
+ s->symbol.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);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid section %d (max %lu): "
+ "setting to undefined"),
+ s->symbol.name, section, mdata->nsects);
}
- s->section = bfd_und_section_ptr;
+ s->symbol.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;
+ /* FIXME: we don't follow the BFD convention as this indirect symbol
+ won't be followed by the referenced one. This looks harmless
+ unless we start using the linker. */
+ s->symbol.flags |= BSF_INDIRECT;
+ s->symbol.section = bfd_ind_section_ptr;
+ s->symbol.value = 0;
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;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid type field 0x%x: "
+ "setting to undefined"), s->symbol.name, symtype);
+ s->symbol.section = bfd_und_section_ptr;
break;
}
}
- return 0;
+ return TRUE;
}
-int
-bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
- bfd *abfd;
- bfd_mach_o_symtab_command *sym;
+bfd_boolean
+bfd_mach_o_read_symtab_strtab (bfd *abfd)
{
- BFD_ASSERT (sym->strtab == NULL);
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
+
+ /* Fail if there is no symtab. */
+ if (sym == NULL)
+ return FALSE;
+
+ /* Success if already loaded. */
+ if (sym->strtab)
+ return TRUE;
if (abfd->flags & BFD_IN_MEMORY)
{
if ((sym->stroff + sym->strsize) > b->size)
{
bfd_set_error (bfd_error_file_truncated);
- return -1;
+ return FALSE;
}
- sym->strtab = b->buffer + sym->stroff;
- return 0;
+ sym->strtab = (char *) b->buffer + sym->stroff;
}
-
- 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)
+ else
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
- sym->strsize, sym->stroff);
- return -1;
+ /* See PR 21840 for a reproducer. */
+ if ((sym->strsize + 1) == 0)
+ return FALSE;
+ sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
+ if (sym->strtab == NULL)
+ return FALSE;
+
+ if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
+ || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
+ {
+ /* PR 17512: file: 10888-1609-0.004. */
+ bfd_release (abfd, sym->strtab);
+ sym->strtab = NULL;
+ bfd_set_error (bfd_error_file_truncated);
+ return FALSE;
+ }
+ /* Zero terminate the string table. */
+ sym->strtab[sym->strsize] = 0;
}
- return 0;
+ return TRUE;
}
-int
-bfd_mach_o_scan_read_symtab_symbols (abfd, sym)
- bfd *abfd;
- bfd_mach_o_symtab_command *sym;
+bfd_boolean
+bfd_mach_o_read_symtab_symbols (bfd *abfd)
{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
unsigned long i;
- int ret;
- BFD_ASSERT (sym->symbols == NULL);
- sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
+ if (sym == NULL || sym->symbols)
+ /* Return now if there are no symbols or if already loaded. */
+ return TRUE;
+ sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
if (sym->symbols == NULL)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
- return -1;
+ _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
+ "unable to allocate memory for symbols"));
+ sym->nsyms = 0;
+ return FALSE;
}
-
- ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
- if (ret != 0)
- return ret;
+
+ if (!bfd_mach_o_read_symtab_strtab (abfd))
+ goto fail;
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;
-}
+ if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
+ goto fail;
-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);
+ return TRUE;
+
+ fail:
+ bfd_release (abfd, sym->symbols);
+ sym->symbols = NULL;
+ sym->nsyms = 0;
+ return FALSE;
}
static const char *
-bfd_mach_o_i386_flavour_string (flavour)
- unsigned int flavour;
+bfd_mach_o_i386_flavour_string (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";
+ case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
+ case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
+ case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
+ case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
+ case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
+ case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
+ case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
+ case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
+ case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
+ case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
+ case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
+ case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
+ case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
default: return "UNKNOWN";
}
}
static const char *
-bfd_mach_o_ppc_flavour_string (flavour)
- unsigned int flavour;
+bfd_mach_o_ppc_flavour_string (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";
+ 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";
+ case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
+ case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
default: return "UNKNOWN";
}
}
-static int
-bfd_mach_o_scan_write_thread (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_dylinker (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;
+ bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
+ struct mach_o_str_command_external raw;
+ unsigned int nameoff;
+ unsigned int namelen;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.str);
+ if (nameoff > command->len)
+ return FALSE;
+
+ cmd->name_offset = nameoff;
+ namelen = command->len - nameoff;
+ nameoff += command->offset;
+ cmd->name_str = bfd_alloc (abfd, namelen);
+ if (cmd->name_str == NULL)
+ return FALSE;
+ if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_dylinker (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
- unsigned char buf[4];
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_dylib_command *cmd = &command->command.dylib;
+ struct mach_o_dylib_command_external raw;
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;
+ unsigned int namelen;
- 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);
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ switch (command->type)
+ {
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
+ case BFD_MACH_O_LC_ID_DYLIB:
+ case BFD_MACH_O_LC_REEXPORT_DYLIB:
+ case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
+ break;
+ default:
+ BFD_FAIL ();
+ return FALSE;
+ }
- 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;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- cmd->section = bfdsec;
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ if (nameoff > command->len)
+ return FALSE;
+ cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
+ cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
+ cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
- return 0;
+ cmd->name_offset = command->offset + nameoff;
+ namelen = command->len - nameoff;
+ cmd->name_str = bfd_alloc (abfd, namelen);
+ if (cmd->name_str == NULL)
+ return FALSE;
+ if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_dylib (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_prebound_dylib (bfd *abfd,
+ bfd_mach_o_load_command *command)
{
- bfd_mach_o_dylib_command *cmd = &command->command.dylib;
- unsigned char buf[16];
+ bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
+ struct mach_o_prebound_dylib_command_external raw;
unsigned int nameoff;
- asection *bfdsec;
- char *sname;
- const char *prefix;
+ unsigned int modoff;
+ unsigned int str_len;
+ unsigned char *str;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ modoff = bfd_h_get_32 (abfd, raw.linked_modules);
+ if (nameoff > command->len || modoff > command->len)
+ return FALSE;
+
+ str_len = command->len - sizeof (raw);
+ str = bfd_alloc (abfd, str_len);
+ if (str == NULL)
+ return FALSE;
+ if (bfd_bread (str, str_len, abfd) != str_len)
+ return FALSE;
- 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));
+ cmd->name_offset = command->offset + nameoff;
+ cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
+ cmd->linked_modules_offset = command->offset + modoff;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 16, abfd) != 16)
- return -1;
+ cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
+ cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
+ return TRUE;
+}
- 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);
+static bfd_boolean
+bfd_mach_o_read_prebind_cksum (bfd *abfd,
+ bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
+ struct mach_o_prebind_cksum_command_external raw;
- 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 ();
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
+ cmd->cksum = bfd_get_32 (abfd, raw.cksum);
+ return TRUE;
+}
- 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;
+static bfd_boolean
+bfd_mach_o_read_twolevel_hints (bfd *abfd,
+ bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
+ struct mach_o_twolevel_hints_command_external raw;
- cmd->section = bfdsec;
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- return 0;
+ cmd->offset = bfd_get_32 (abfd, raw.offset);
+ cmd->nhints = bfd_get_32 (abfd, raw.nhints);
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_prebound_dylib (abfd, command)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_mach_o_load_command *command ATTRIBUTE_UNUSED;
+static bfd_boolean
+bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
{
- /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
-
- BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
- return 0;
+ bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
+ struct mach_o_fvmlib_command_external raw;
+ unsigned int nameoff;
+ unsigned int namelen;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ if (nameoff > command->len)
+ return FALSE;
+ fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
+ fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
+
+ fvm->name_offset = command->offset + nameoff;
+ namelen = command->len - nameoff;
+ fvm->name_str = bfd_alloc (abfd, namelen);
+ if (fvm->name_str == NULL)
+ return FALSE;
+ if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
+ || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_thread (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_data_struct *mdata = NULL;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bfd_mach_o_thread_command *cmd = &command->command.thread;
- unsigned char buf[8];
- bfd_vma offset;
+ unsigned int offset;
unsigned int nflavours;
unsigned int i;
+ struct mach_o_thread_command_external raw;
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;
-
+ /* Count the number of threads. */
offset = 8;
nflavours = 0;
- while (offset != command->len)
+ while (offset + sizeof (raw) <= command->len)
{
- if (offset >= command->len)
- return -1;
+ unsigned int count;
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
-
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
- return -1;
+ if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
+ count = bfd_h_get_32 (abfd, raw.count);
+ if (count > (unsigned) -1 / 4
+ || command->len - (offset + sizeof (raw)) < count * 4)
+ return FALSE;
+ offset += sizeof (raw) + count * 4;
nflavours++;
}
+ if (nflavours == 0 || offset != command->len)
+ return FALSE;
- cmd->flavours =
- ((bfd_mach_o_thread_flavour *)
- bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)));
+ /* Allocate threads. */
+ cmd->flavours = bfd_alloc2 (abfd, nflavours,
+ sizeof (bfd_mach_o_thread_flavour));
if (cmd->flavours == NULL)
- return -1;
+ return FALSE;
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;
+ if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
+ cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
+ cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
+ offset += cmd->flavours[nflavours].size + sizeof (raw);
nflavours++;
}
char *sname;
const char *flavourstr;
const char *prefix = "LC_THREAD";
- unsigned int i = 0;
-
+ 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);
+ case BFD_MACH_O_CPU_TYPE_POWERPC_64:
+ 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);
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ 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);
+ sname = bfd_alloc (abfd, snamelen);
if (sname == NULL)
- return -1;
+ return FALSE;
for (;;)
{
- sprintf (sname, "%s.%s.%u", prefix, flavourstr, i);
- if (bfd_get_section_by_name (abfd, sname) == NULL) {
+ sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
+ if (bfd_get_section_by_name (abfd, sname) == NULL)
break;
- }
- i++;
+ j++;
}
- bfdsec = bfd_make_section (abfd, sname);
-
+ bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
+
bfdsec->vma = 0;
bfdsec->lma = 0;
- bfdsec->_raw_size = cmd->flavours[i].size;
+ bfdsec->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;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_write_symtab (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_symtab_command *seg = &command->command.symtab;
- unsigned char buf[16];
+ bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
- 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);
+ {
+ struct mach_o_dysymtab_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
+ cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
+ cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
+ cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
+ cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
+ cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
+ cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
+ cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
+ cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
+ cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
+ cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
+ cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
+ cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
+ cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
+ cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
+ cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
+ cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
+ cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
+ }
- 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;
+ if (cmd->nmodtab != 0)
+ {
+ unsigned int i;
+ int wide = bfd_mach_o_wide_p (abfd);
+ unsigned int module_len = wide ? 56 : 52;
- return 0;
-}
+ cmd->dylib_module =
+ bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
+ if (cmd->dylib_module == NULL)
+ return FALSE;
-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];
+ if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
+ return FALSE;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
+ for (i = 0; i < cmd->nmodtab; i++)
+ {
+ bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
+ unsigned long v;
+ unsigned char buf[56];
+
+ if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
+ return FALSE;
+
+ module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
+ module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
+ module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
+ module->irefsym = bfd_h_get_32 (abfd, buf + 12);
+ module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
+ module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
+ module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
+ module->iextrel = bfd_h_get_32 (abfd, buf + 28);
+ module->nextrel = bfd_h_get_32 (abfd, buf + 32);
+ v = bfd_h_get_32 (abfd, buf +36);
+ module->iinit = v & 0xffff;
+ module->iterm = (v >> 16) & 0xffff;
+ v = bfd_h_get_32 (abfd, buf + 40);
+ module->ninit = v & 0xffff;
+ module->nterm = (v >> 16) & 0xffff;
+ if (wide)
+ {
+ module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
+ module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
+ }
+ else
+ {
+ module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
+ module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
+ }
+ }
+ }
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 72, abfd) != 72)
- return -1;
+ if (cmd->ntoc != 0)
+ {
+ unsigned long i;
- 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);
+ cmd->dylib_toc = bfd_alloc2
+ (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
+ if (cmd->dylib_toc == NULL)
+ return FALSE;
- return 0;
+ if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->ntoc; i++)
+ {
+ struct mach_o_dylib_table_of_contents_external raw;
+ bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
+ toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
+ }
+ }
+
+ if (cmd->nindirectsyms != 0)
+ {
+ unsigned int i;
+
+ cmd->indirect_syms = bfd_alloc2
+ (abfd, cmd->nindirectsyms, sizeof (unsigned int));
+ if (cmd->indirect_syms == NULL)
+ return FALSE;
+
+ if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->nindirectsyms; i++)
+ {
+ unsigned char raw[4];
+ unsigned int *is = &cmd->indirect_syms[i];
+
+ if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ *is = bfd_h_get_32 (abfd, raw);
+ }
+ }
+
+ if (cmd->nextrefsyms != 0)
+ {
+ unsigned long v;
+ unsigned int i;
+
+ cmd->ext_refs = bfd_alloc2
+ (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
+ if (cmd->ext_refs == NULL)
+ return FALSE;
+
+ if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
+ return FALSE;
+
+ for (i = 0; i < cmd->nextrefsyms; i++)
+ {
+ unsigned char raw[4];
+ bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
+
+ if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ /* Fields isym and flags are written as bit-fields, thus we need
+ a specific processing for endianness. */
+ v = bfd_h_get_32 (abfd, raw);
+ if (bfd_big_endian (abfd))
+ {
+ ref->isym = (v >> 8) & 0xffffff;
+ ref->flags = v & 0xff;
+ }
+ else
+ {
+ ref->isym = v & 0xffffff;
+ ref->flags = (v >> 24) & 0xff;
+ }
+ }
+ }
+
+ if (mdata->dysymtab)
+ return FALSE;
+ mdata->dysymtab = cmd;
+
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_symtab (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_symtab (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_mach_o_symtab_command *symtab = &command->command.symtab;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct mach_o_symtab_command_external raw;
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);
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
+ symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
+ symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
+ symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
+ symtab->symbols = NULL;
+ symtab->strtab = NULL;
+
+ if (symtab->nsyms != 0)
+ abfd->flags |= HAS_SYMS;
+
+ if (mdata->symtab)
+ return FALSE;
+ mdata->symtab = symtab;
+ return TRUE;
+}
- 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);
+static bfd_boolean
+bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_uuid_command *cmd = &command->command.uuid;
- 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;
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
- seg->stabstr_segment = bfdsec;
+ if (command->len < 16 + 8)
+ return FALSE;
+ if (bfd_bread (cmd->uuid, 16, abfd) != 16)
+ return FALSE;
- return 0;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_segment (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_linkedit (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_mach_o_linkedit_command *cmd = &command->command.linkedit;
+ struct mach_o_linkedit_data_command_external raw;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 48, abfd) != 48)
- return -1;
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- 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);
+ cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
+ cmd->datasize = bfd_get_32 (abfd, raw.datasize);
+ return TRUE;
+}
- bfdsec = bfd_make_section_anyway (abfd, sname);
- if (bfdsec == NULL)
- return -1;
+static bfd_boolean
+bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_str_command *cmd = &command->command.str;
+ struct mach_o_str_command_external raw;
+ unsigned long off;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ off = bfd_get_32 (abfd, raw.str);
+ if (off > command->len)
+ return FALSE;
+
+ cmd->stroff = command->offset + off;
+ cmd->str_len = command->len - off;
+ cmd->str = bfd_alloc (abfd, cmd->str_len);
+ if (cmd->str == NULL)
+ return FALSE;
+ if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
+ || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
+ return FALSE;
+ return TRUE;
+}
- 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;
+static unsigned char *
+bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
+{
+ unsigned char *buf;
- seg->segment = bfdsec;
+ buf = bfd_alloc (abfd, size);
+ if (buf == NULL)
+ return NULL;
+ if (bfd_seek (abfd, off, SEEK_SET) != 0
+ || bfd_bread (buf, size, abfd) != size)
+ return NULL;
+ return buf;
+}
- if (seg->nsects != 0)
+static bfd_boolean
+bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
+{
+ /* Read rebase content. */
+ if (cmd->rebase_content == NULL && cmd->rebase_size != 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);
+ cmd->rebase_content =
+ bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
+ if (cmd->rebase_content == NULL)
+ return FALSE;
+ }
- if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i], segoff) != 0)
- return -1;
- }
+ /* Read bind content. */
+ if (cmd->bind_content == NULL && cmd->bind_size != 0)
+ {
+ cmd->bind_content =
+ bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
+ if (cmd->bind_content == NULL)
+ return FALSE;
}
- return 0;
+ /* Read weak bind content. */
+ if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
+ {
+ cmd->weak_bind_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
+ if (cmd->weak_bind_content == NULL)
+ return FALSE;
+ }
+
+ /* Read lazy bind content. */
+ if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
+ {
+ cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
+ if (cmd->lazy_bind_content == NULL)
+ return FALSE;
+ }
+
+ /* Read export content. */
+ if (cmd->export_content == NULL && cmd->export_size != 0)
+ {
+ cmd->export_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->export_off, cmd->export_size);
+ if (cmd->export_content == NULL)
+ return FALSE;
+ }
+
+ return TRUE;
}
-static int
-bfd_mach_o_scan_write_segment (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_dyld_info (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);
+ bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
+ struct mach_o_dyld_info_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
+ cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
+ cmd->rebase_content = NULL;
+ cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
+ cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
+ cmd->bind_content = NULL;
+ cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
+ cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
+ cmd->weak_bind_content = NULL;
+ cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
+ cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
+ cmd->lazy_bind_content = NULL;
+ cmd->export_off = bfd_get_32 (abfd, raw.export_off);
+ cmd->export_size = bfd_get_32 (abfd, raw.export_size);
+ cmd->export_content = NULL;
+ return TRUE;
+}
- 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;
+static bfd_boolean
+bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_version_min_command *cmd = &command->command.version_min;
+ struct mach_o_version_min_command_external raw;
- {
- char buf[1024];
- bfd_vma nbytes = seg->filesize;
- bfd_vma curoff = seg->fileoff;
-
- while (nbytes > 0)
- {
- bfd_vma thisread = nbytes;
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- if (thisread > 1024)
- thisread = 1024;
+ cmd->version = bfd_get_32 (abfd, raw.version);
+ cmd->sdk = bfd_get_32 (abfd, raw.sdk);
+ return TRUE;
+}
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
- return -1;
+static bfd_boolean
+bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
+ struct mach_o_encryption_info_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
+ cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
+ cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
+ return TRUE;
+}
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
- return -1;
+static bfd_boolean
+bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
+ struct mach_o_encryption_info_64_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
+ cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
+ cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
+ return TRUE;
+}
- nbytes -= thisread;
- curoff += thisread;
- }
- }
+static bfd_boolean
+bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_main_command *cmd = &command->command.main;
+ struct mach_o_entry_point_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
+ cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_source_version_command *cmd = &command->command.source_version;
+ struct mach_o_source_version_command_external raw;
+ bfd_uint64_t ver;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ ver = bfd_get_64 (abfd, raw.version);
+ /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
+ generates warnings) in case of the host doesn't support 64 bit
+ integers. */
+ cmd->e = ver & 0x3ff;
+ ver >>= 10;
+ cmd->d = ver & 0x3ff;
+ ver >>= 10;
+ cmd->c = ver & 0x3ff;
+ ver >>= 10;
+ cmd->b = ver & 0x3ff;
+ ver >>= 10;
+ cmd->a = ver & 0xffffff;
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_note (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_note_command *cmd = &command->command.note;
+ struct mach_o_note_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ memcpy (cmd->data_owner, raw.data_owner, 16);
+ cmd->offset = bfd_get_64 (abfd, raw.offset);
+ cmd->size = bfd_get_64 (abfd, raw.size);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_build_version (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_build_version_command *cmd = &command->command.build_version;
+ struct mach_o_build_version_command_external raw;
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->platform = bfd_get_32 (abfd, raw.platform);
+ cmd->minos = bfd_get_32 (abfd, raw.minos);
+ cmd->sdk = bfd_get_32 (abfd, raw.sdk);
+ cmd->ntools = bfd_get_32 (abfd, raw.ntools);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_segment (bfd *abfd,
+ bfd_mach_o_load_command *command,
+ unsigned int wide)
+{
+ bfd_mach_o_segment_command *seg = &command->command.segment;
+ unsigned long i;
+
+ if (wide)
+ {
+ struct mach_o_segment_command_64_external raw;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ memcpy (seg->segname, raw.segname, 16);
+ seg->segname[16] = '\0';
+
+ seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
+ seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
+ seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
+ seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
+ seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
+ seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
+ seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
+ seg->flags = bfd_h_get_32 (abfd, raw.flags);
+ }
+ else
+ {
+ struct mach_o_segment_command_32_external raw;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+
+ if (command->len < sizeof (raw) + 8)
+ return FALSE;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ memcpy (seg->segname, raw.segname, 16);
+ seg->segname[16] = '\0';
+
+ seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
+ seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
+ seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
+ seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
+ seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
+ seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
+ seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
+ seg->flags = bfd_h_get_32 (abfd, raw.flags);
+ }
+ seg->sect_head = NULL;
+ seg->sect_tail = NULL;
for (i = 0; i < seg->nsects; i++)
{
- bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
+ asection *sec;
- if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
- return -1;
+ sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
+ if (sec == NULL)
+ return FALSE;
+
+ bfd_mach_o_append_section_to_segment
+ (seg, bfd_mach_o_get_mach_o_section (sec));
}
- return 0;
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_command (abfd, command)
- bfd *abfd;
- bfd_mach_o_load_command *command;
+static bfd_boolean
+bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
{
- unsigned char buf[8];
+ return bfd_mach_o_read_segment (abfd, command, 0);
+}
- bfd_seek (abfd, command->offset, SEEK_SET);
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
- return -1;
+static bfd_boolean
+bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ return bfd_mach_o_read_segment (abfd, command, 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);
+static bfd_boolean
+bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct mach_o_load_command_external raw;
+ unsigned int cmd;
+
+ /* Read command type and length. */
+ if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
+ || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
+ return FALSE;
+
+ cmd = bfd_h_get_32 (abfd, raw.cmd);
+ command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
+ command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
+ command->len = bfd_h_get_32 (abfd, raw.cmdsize);
+ if (command->len < 8 || command->len % 4 != 0)
+ return FALSE;
switch (command->type)
{
case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_scan_read_segment (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_segment_32 (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_SEGMENT_64:
+ if (!bfd_mach_o_read_segment_64 (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_SYMTAB:
- if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_symtab (abfd, command))
+ 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_read_thread (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_thread (abfd, command))
+ return FALSE;
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;
+ case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
+ if (!bfd_mach_o_read_dylinker (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LAZY_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;
+ case BFD_MACH_O_LC_REEXPORT_DYLIB:
+ case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
+ if (!bfd_mach_o_read_dylib (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_PREBOUND_DYLIB:
- if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_prebound_dylib (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_LOADFVMLIB:
case BFD_MACH_O_LC_IDFVMLIB:
+ if (!bfd_mach_o_read_fvmlib (abfd, command))
+ return FALSE;
+ break;
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_ROUTINES_64:
+ break;
case BFD_MACH_O_LC_SUB_FRAMEWORK:
+ case BFD_MACH_O_LC_SUB_UMBRELLA:
+ case BFD_MACH_O_LC_SUB_LIBRARY:
+ case BFD_MACH_O_LC_SUB_CLIENT:
+ case BFD_MACH_O_LC_RPATH:
+ if (!bfd_mach_o_read_str (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_DYSYMTAB:
- if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_dysymtab (abfd, command))
+ return FALSE;
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:
+ if (!bfd_mach_o_read_prebind_cksum (abfd, command))
+ return FALSE;
break;
- default:
- fprintf (stderr, "unable to read unknown load command 0x%lx\n",
- (unsigned long) command->type);
+ case BFD_MACH_O_LC_TWOLEVEL_HINTS:
+ if (!bfd_mach_o_read_twolevel_hints (abfd, command))
+ return FALSE;
break;
+ case BFD_MACH_O_LC_UUID:
+ if (!bfd_mach_o_read_uuid (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_CODE_SIGNATURE:
+ case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
+ case BFD_MACH_O_LC_FUNCTION_STARTS:
+ case BFD_MACH_O_LC_DATA_IN_CODE:
+ case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
+ case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
+ if (!bfd_mach_o_read_linkedit (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_ENCRYPTION_INFO:
+ if (!bfd_mach_o_read_encryption_info (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
+ if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ if (!bfd_mach_o_read_dyld_info (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
+ case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
+ case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
+ case BFD_MACH_O_LC_VERSION_MIN_TVOS:
+ if (!bfd_mach_o_read_version_min (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_MAIN:
+ if (!bfd_mach_o_read_main (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_SOURCE_VERSION:
+ if (!bfd_mach_o_read_source_version (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_LINKER_OPTIONS:
+ break;
+ case BFD_MACH_O_LC_NOTE:
+ if (!bfd_mach_o_read_note (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_BUILD_VERSION:
+ if (!bfd_mach_o_read_build_version (abfd, command))
+ return FALSE;
+ break;
+ default:
+ command->len = 0;
+ _bfd_error_handler (_("%pB: unknown load command %#x"),
+ abfd, command->type);
+ return FALSE;
}
- return 0;
+ return TRUE;
}
static void
-bfd_mach_o_flatten_sections (abfd)
- bfd *abfd;
+bfd_mach_o_flatten_sections (bfd *abfd)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_load_command *cmd;
long csect = 0;
- unsigned long i, j;
-
+
+ /* Count total number of sections. */
mdata->nsects = 0;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
+ if (cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
{
- bfd_mach_o_segment_command *seg = &mdata->commands[i].command.segment;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+
mdata->nsects += seg->nsects;
}
}
- mdata->sections = bfd_alloc (abfd, mdata->nsects * sizeof (bfd_mach_o_section *));
+ /* Allocate sections array. */
+ mdata->sections = bfd_alloc2 (abfd,
+ mdata->nsects, sizeof (bfd_mach_o_section *));
+
+ /* Fill the array. */
csect = 0;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
+ if (cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
{
- bfd_mach_o_segment_command *seg = &mdata->commands[i].command.segment;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ bfd_mach_o_section *sec;
BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
- for (j = 0; j < seg->nsects; j++)
- mdata->sections[csect++] = &seg->sections[j];
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ mdata->sections[csect++] = sec;
}
}
}
-int
-bfd_mach_o_scan_start_address (abfd)
- bfd *abfd;
+static bfd_boolean
+bfd_mach_o_scan_start_address (bfd *abfd)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
- bfd_mach_o_thread_command *cmd = NULL;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_thread_command *thr = NULL;
+ bfd_mach_o_load_command *cmd;
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;
- }
- }
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ if (cmd->type == BFD_MACH_O_LC_THREAD
+ || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
+ {
+ thr = &cmd->command.thread;
+ break;
+ }
+ else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
+ {
+ bfd_mach_o_main_command *main_cmd = &cmd->command.main;
+ bfd_mach_o_section *text_sect = mdata->sections[0];
- if (cmd == NULL)
- return 0;
+ if (text_sect)
+ {
+ abfd->start_address = main_cmd->entryoff
+ + (text_sect->addr - text_sect->offset);
+ return TRUE;
+ }
+ }
- for (i = 0; i < cmd->nflavours; i++)
+ /* An object file has no start address, so do not fail if not found. */
+ if (thr == NULL)
+ return TRUE;
+
+ /* FIXME: create a subtarget hook ? */
+ for (i = 0; i < thr->nflavours; i++)
{
- if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
- && (cmd->flavours[i].flavour == (unsigned long) BFD_MACH_O_i386_THREAD_STATE))
+ if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
+ && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
{
unsigned char buf[4];
- bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET);
-
- if (bfd_bread (buf, 4, abfd) != 4)
- return -1;
+ if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
+ || bfd_bread (buf, 4, abfd) != 4)
+ return FALSE;
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))
+ else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
+ && (thr->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;
+ if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
+ || bfd_bread (buf, 4, abfd) != 4)
+ return FALSE;
abfd->start_address = bfd_h_get_32 (abfd, buf);
}
+ else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
+ && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
+ {
+ unsigned char buf[8];
+
+ if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
+ || bfd_bread (buf, 8, abfd) != 8)
+ return FALSE;
+
+ abfd->start_address = bfd_h_get_64 (abfd, buf);
+ }
+ else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
+ && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
+ {
+ unsigned char buf[8];
+
+ if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
+ || bfd_bread (buf, 8, abfd) != 8)
+ return FALSE;
+
+ abfd->start_address = bfd_h_get_64 (abfd, buf);
+ }
}
- return 0;
+ return TRUE;
+}
+
+bfd_boolean
+bfd_mach_o_set_arch_mach (bfd *abfd,
+ enum bfd_architecture arch,
+ unsigned long machine)
+{
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ /* If this isn't the right architecture for this backend, and this
+ isn't the generic backend, fail. */
+ if (arch != bed->arch
+ && arch != bfd_arch_unknown
+ && bed->arch != bfd_arch_unknown)
+ return FALSE;
+
+ return bfd_default_set_arch_mach (abfd, arch, machine);
}
-int
-bfd_mach_o_scan (abfd, header)
- bfd *abfd;
- bfd_mach_o_header *header;
+static bfd_boolean
+bfd_mach_o_scan (bfd *abfd,
+ bfd_mach_o_header *header,
+ bfd_mach_o_data_struct *mdata)
{
unsigned int i;
- bfd_mach_o_data_struct *mdata = NULL;
- enum bfd_architecture cputype;
- unsigned long cpusubtype;
+ enum bfd_architecture cpu_type;
+ unsigned long cpu_subtype;
+ unsigned int hdrsize;
- mdata = ((bfd_mach_o_data_struct *)
- bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
- if (mdata == NULL)
- return -1;
+ hdrsize = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
mdata->header = *header;
- mdata->symbols = NULL;
- abfd->flags = abfd->xvec->object_flags | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS));
+ abfd->flags = abfd->flags & BFD_IN_MEMORY;
+ switch (header->filetype)
+ {
+ case BFD_MACH_O_MH_OBJECT:
+ abfd->flags |= HAS_RELOC;
+ break;
+ case BFD_MACH_O_MH_EXECUTE:
+ abfd->flags |= EXEC_P;
+ break;
+ case BFD_MACH_O_MH_DYLIB:
+ case BFD_MACH_O_MH_BUNDLE:
+ abfd->flags |= DYNAMIC;
+ break;
+ }
+
abfd->tdata.mach_o_data = mdata;
- bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, &cputype, &cpusubtype);
- if (cputype == bfd_arch_unknown)
+ bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
+ &cpu_type, &cpu_subtype);
+ if (cpu_type == bfd_arch_unknown)
{
- fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
- header->cputype, header->cpusubtype);
- return -1;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
+ header->cputype, header->cpusubtype);
+ return FALSE;
}
- bfd_set_arch_mach (abfd, cputype, cpusubtype);
-
+ bfd_set_arch_mach (abfd, cpu_type, cpu_subtype);
+
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;
-
+ bfd_mach_o_load_command *cmd;
+
+ mdata->first_command = NULL;
+ mdata->last_command = NULL;
+
+ cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
+ if (cmd == NULL)
+ return FALSE;
+
for (i = 0; i < header->ncmds; i++)
{
- bfd_mach_o_load_command *cur = &mdata->commands[i];
+ bfd_mach_o_load_command *cur = &cmd[i];
+
+ bfd_mach_o_append_command (abfd, cur);
if (i == 0)
- cur->offset = 28;
+ cur->offset = hdrsize;
else
{
- bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
+ bfd_mach_o_load_command *prev = &cmd[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
+ if (!bfd_mach_o_read_command (abfd, cur))
+ return FALSE;
+ }
}
+ /* Sections should be flatten before scanning start address. */
bfd_mach_o_flatten_sections (abfd);
+ if (!bfd_mach_o_scan_start_address (abfd))
+ return FALSE;
- return 0;
+ return TRUE;
}
-boolean
-bfd_mach_o_mkobject (abfd)
- bfd *abfd;
+bfd_boolean
+bfd_mach_o_mkobject_init (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = NULL;
- mdata = ((bfd_mach_o_data_struct *)
- bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
+ mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
if (mdata == NULL)
- return false;
+ return FALSE;
abfd->tdata.mach_o_data = mdata;
mdata->header.magic = 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->first_command = NULL;
+ mdata->last_command = NULL;
mdata->nsects = 0;
mdata->sections = NULL;
- mdata->ibfd = NULL;
+ mdata->dyn_reloc_cache = NULL;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_gen_mkobject (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata;
+
+ if (!bfd_mach_o_mkobject_init (abfd))
+ return FALSE;
+
+ mdata = bfd_mach_o_get_data (abfd);
+ mdata->header.magic = BFD_MACH_O_MH_MAGIC;
+ mdata->header.cputype = 0;
+ mdata->header.cpusubtype = 0;
+ mdata->header.byteorder = abfd->xvec->byteorder;
+ mdata->header.version = 1;
- return true;
+ return TRUE;
}
const bfd_target *
-bfd_mach_o_object_p (abfd)
- bfd *abfd;
+bfd_mach_o_header_p (bfd *abfd,
+ file_ptr hdr_off,
+ bfd_mach_o_filetype file_type,
+ bfd_mach_o_cpu_type cpu_type)
{
bfd_mach_o_header header;
+ bfd_mach_o_data_struct *mdata;
+
+ if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
+ goto wrong;
- if (bfd_mach_o_read_header (abfd, &header) != 0)
+ if (! (header.byteorder == BFD_ENDIAN_BIG
+ || header.byteorder == BFD_ENDIAN_LITTLE))
{
- bfd_set_error (bfd_error_wrong_format);
- return NULL;
+ _bfd_error_handler (_("unknown header byte-order value %#x"),
+ header.byteorder);
+ goto wrong;
}
- if (! ((header.byteorder == BFD_ENDIAN_BIG)
- || (header.byteorder == BFD_ENDIAN_LITTLE)))
+ 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;
+
+ /* Check cputype and filetype.
+ In case of wildcard, do not accept magics that are handled by existing
+ targets. */
+ if (cpu_type)
{
- fprintf (stderr, "unknown header byte-order value 0x%lx\n", (long) header.byteorder);
- bfd_set_error (bfd_error_wrong_format);
- return NULL;
+ if (header.cputype != cpu_type)
+ 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))))
+ else
{
- bfd_set_error (bfd_error_wrong_format);
- return NULL;
+#ifndef BFD64
+ /* Do not recognize 64 architectures if not configured for 64bit targets.
+ This could happen only for generic targets. */
+ if (mach_o_wide_p (&header))
+ goto wrong;
+#endif
}
- abfd->tdata.mach_o_data = NULL;
-
- if (bfd_mach_o_scan (abfd, &header) != 0)
+ if (file_type)
{
- abfd->tdata.mach_o_data = NULL;
- bfd_set_error (bfd_error_wrong_format);
- return NULL;
+ if (header.filetype != file_type)
+ goto wrong;
+ }
+ else
+ {
+ switch (header.filetype)
+ {
+ case BFD_MACH_O_MH_CORE:
+ /* Handled by core_p */
+ goto wrong;
+ default:
+ break;
+ }
}
-
+
+ mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
+ if (mdata == NULL)
+ goto fail;
+ mdata->hdr_offset = hdr_off;
+
+ if (!bfd_mach_o_scan (abfd, &header, mdata))
+ goto wrong;
+
return abfd->xvec;
+
+ wrong:
+ bfd_set_error (bfd_error_wrong_format);
+
+ fail:
+ return NULL;
}
-const bfd_target *
-bfd_mach_o_core_p (abfd)
- bfd *abfd;
+static const bfd_target *
+bfd_mach_o_gen_object_p (bfd *abfd)
{
- bfd_mach_o_header header;
-
- bfd_set_error (bfd_error_wrong_format);
+ return bfd_mach_o_header_p (abfd, 0, 0, 0);
+}
- if (bfd_mach_o_read_header (abfd, &header) != 0)
- return NULL;
+static const bfd_target *
+bfd_mach_o_gen_core_p (bfd *abfd)
+{
+ return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
+}
- 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 ();
- }
+/* Return the base address of ABFD, ie the address at which the image is
+ mapped. The possible initial pagezero is ignored. */
- 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))))
- return NULL;
+bfd_vma
+bfd_mach_o_get_base_address (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata;
+ bfd_mach_o_load_command *cmd;
- if (header.filetype != BFD_MACH_O_MH_CORE)
- return NULL;
+ /* Check for Mach-O. */
+ if (!bfd_mach_o_valid (abfd))
+ return 0;
+ mdata = bfd_mach_o_get_data (abfd);
- abfd->tdata.mach_o_data = NULL;
- if (bfd_mach_o_scan (abfd, &header) != 0)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- abfd->tdata.mach_o_data = NULL;
- return NULL;
+ if ((cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
+ {
+ struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
+
+ if (segcmd->initprot != 0)
+ return segcmd->vmaddr;
+ }
}
-
- return abfd->xvec;
+ return 0;
}
typedef struct mach_o_fat_archentry
unsigned long offset;
unsigned long size;
unsigned long align;
- bfd *abfd;
} mach_o_fat_archentry;
typedef struct mach_o_fat_data_struct
} mach_o_fat_data_struct;
const bfd_target *
-bfd_mach_o_archive_p (abfd)
- bfd *abfd;
+bfd_mach_o_fat_archive_p (bfd *abfd)
{
- mach_o_fat_data_struct *adata;
- unsigned char buf[20];
+ mach_o_fat_data_struct *adata = NULL;
+ struct mach_o_fat_header_external hdr;
unsigned long i;
- bfd_seek (abfd, 0, SEEK_SET);
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
- return NULL;
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
+ goto error;
- adata = (mach_o_fat_data_struct *)
- bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
+ adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
if (adata == NULL)
- return NULL;
-
- adata->magic = bfd_getb32 (buf);
- adata->nfat_arch = bfd_getb32 (buf + 4);
- if (adata->magic != 0xcafebabe)
- return NULL;
+ goto error;
- adata->archentries = (mach_o_fat_archentry *)
- bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
+ adata->magic = bfd_getb32 (hdr.magic);
+ adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
+ if (adata->magic != 0xcafebabe)
+ goto error;
+ /* Avoid matching Java bytecode files, which have the same magic number.
+ In the Java bytecode file format this field contains the JVM version,
+ which starts at 43.0. */
+ if (adata->nfat_arch > 30)
+ goto error;
+
+ adata->archentries =
+ bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
if (adata->archentries == NULL)
- return 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)
- return NULL;
- 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;
+ struct mach_o_fat_arch_external arch;
+ if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
+ goto error;
+ adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
+ adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
+ adata->archentries[i].offset = bfd_getb32 (arch.offset);
+ adata->archentries[i].size = bfd_getb32 (arch.size);
+ adata->archentries[i].align = bfd_getb32 (arch.align);
}
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;
+}
+
+/* Set the filename for a fat binary member ABFD, whose bfd architecture is
+ ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
+ Set arelt_data and origin fields too. */
+
+static bfd_boolean
+bfd_mach_o_fat_member_init (bfd *abfd,
+ enum bfd_architecture arch_type,
+ unsigned long arch_subtype,
+ mach_o_fat_archentry *entry)
+{
+ struct areltdata *areltdata;
+ /* Create the member filename. Use ARCH_NAME. */
+ const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
+ char *filename;
+
+ if (ap)
+ {
+ /* Use the architecture name if known. */
+ filename = bfd_strdup (ap->printable_name);
+ if (filename == NULL)
+ return FALSE;
+ }
+ else
+ {
+ /* Forge a uniq id. */
+ const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
+ filename = bfd_malloc (namelen);
+ if (filename == NULL)
+ return FALSE;
+ snprintf (filename, namelen, "0x%lx-0x%lx",
+ entry->cputype, entry->cpusubtype);
+ }
+ bfd_set_filename (abfd, filename);
+
+ areltdata = bfd_zmalloc (sizeof (struct areltdata));
+ if (areltdata == NULL)
+ return FALSE;
+ areltdata->parsed_size = entry->size;
+ abfd->arelt_data = areltdata;
+ abfd->iostream = NULL;
+ abfd->origin = entry->offset;
+ return TRUE;
}
bfd *
-bfd_mach_o_openr_next_archived_file (archive, prev)
- bfd *archive;
- bfd *prev;
+bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
{
- mach_o_fat_data_struct *adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
+ mach_o_fat_data_struct *adata;
mach_o_fat_archentry *entry = NULL;
unsigned long i;
+ bfd *nbfd;
+ enum bfd_architecture arch_type;
+ unsigned long arch_subtype;
+ 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. */
+ {
+ /* Start at first one. */
+ i = 0;
+ }
else
{
+ /* Find index of PREV. */
for (i = 0; i < adata->nfat_arch; i++)
{
- if (adata->archentries[i].abfd == prev)
+ if (adata->archentries[i].offset == prev->origin)
break;
}
{
/* Not found. */
bfd_set_error (bfd_error_bad_value);
- return NULL;
+ return NULL;
}
- i++; /* Get next entry. */
- }
-
+
+ /* Get next entry. */
+ i++;
+ }
+
if (i >= adata->nfat_arch)
{
bfd_set_error (bfd_error_no_more_archived_files);
}
entry = &adata->archentries[i];
- if (entry->abfd == NULL)
+ nbfd = _bfd_new_bfd_contained_in (archive);
+ if (nbfd == NULL)
+ return NULL;
+
+ bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
+ &arch_type, &arch_subtype);
+
+ if (!bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry))
{
- bfd *nbfd = _bfd_new_bfd_contained_in (archive);
- char *s = NULL;
+ bfd_close (nbfd);
+ return NULL;
+ }
- if (nbfd == NULL)
- return NULL;
+ bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
- 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 nbfd;
+}
+
+/* Analogous to stat call. */
+
+static int
+bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
+{
+ if (abfd->arelt_data == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- return entry->abfd;
+ buf->st_mtime = 0;
+ buf->st_uid = 0;
+ buf->st_gid = 0;
+ buf->st_mode = 0644;
+ buf->st_size = arelt_size (abfd);
+
+ return 0;
}
-int bfd_mach_o_lookup_section
- (bfd *abfd, asection *section,
- bfd_mach_o_load_command **mcommand, bfd_mach_o_section **msection)
+/* If ABFD format is FORMAT and architecture is ARCH, return it.
+ If ABFD is a fat image containing a member that corresponds to FORMAT
+ and ARCH, returns it.
+ In other case, returns NULL.
+ This function allows transparent uses of fat images. */
+
+bfd *
+bfd_mach_o_fat_extract (bfd *abfd,
+ bfd_format format,
+ const bfd_arch_info_type *arch)
{
- struct mach_o_data_struct *md = abfd->tdata.mach_o_data;
- unsigned int i, j, num;
+ bfd *res;
+ mach_o_fat_data_struct *adata;
+ unsigned int i;
- bfd_mach_o_load_command *ncmd = NULL;
- bfd_mach_o_section *nsect = NULL;
+ if (bfd_check_format (abfd, format))
+ {
+ if (bfd_get_arch_info (abfd) == arch)
+ return abfd;
+ return NULL;
+ }
+ if (!bfd_check_format (abfd, bfd_archive)
+ || abfd->xvec != &mach_o_fat_vec)
+ return NULL;
- BFD_ASSERT (mcommand != NULL);
- BFD_ASSERT (msection != NULL);
+ /* This is a Mach-O fat image. */
+ adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
+ BFD_ASSERT (adata != NULL);
- num = 0;
- for (i = 0; i < md->header.ncmds; i++)
+ for (i = 0; i < adata->nfat_arch; i++)
{
- struct bfd_mach_o_load_command *cmd = &md->commands[i];
- struct bfd_mach_o_segment_command *seg = NULL;
+ struct mach_o_fat_archentry *e = &adata->archentries[i];
+ enum bfd_architecture cpu_type;
+ unsigned long cpu_subtype;
- if (cmd->type != BFD_MACH_O_LC_SEGMENT)
+ bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
+ &cpu_type, &cpu_subtype);
+ if (cpu_type != arch->arch || cpu_subtype != arch->mach)
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];
+ /* The architecture is found. */
+ res = _bfd_new_bfd_contained_in (abfd);
+ if (res == NULL)
+ return NULL;
- if (sect->bfdsection == section)
- {
- if (num == 0)
- nsect = sect;
- num++;
- }
+ if (bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e)
+ && bfd_check_format (res, format))
+ {
+ BFD_ASSERT (bfd_get_arch_info (res) == arch);
+ return res;
}
+ bfd_close (res);
+ return NULL;
}
-
- *mcommand = ncmd;
- *msection = nsect;
- return num;
+
+ return NULL;
}
-int
-bfd_mach_o_lookup_command
- (bfd *abfd, bfd_mach_o_load_command_type type,
- bfd_mach_o_load_command **mcommand)
+static bfd_boolean
+bfd_mach_o_fat_close_and_cleanup (bfd *abfd)
{
- struct mach_o_data_struct *md = NULL;
- bfd_mach_o_load_command *ncmd = NULL;
- unsigned int i, num;
+ _bfd_unlink_from_archive_parent (abfd);
+ return TRUE;
+}
- md = abfd->tdata.mach_o_data;
+int
+bfd_mach_o_lookup_command (bfd *abfd,
+ bfd_mach_o_load_command_type type,
+ bfd_mach_o_load_command **mcommand)
+{
+ struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct bfd_mach_o_load_command *cmd;
+ unsigned int num;
- BFD_ASSERT (md != NULL);
+ BFD_ASSERT (mdata != NULL);
BFD_ASSERT (mcommand != NULL);
num = 0;
- for (i = 0; i < md->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- struct bfd_mach_o_load_command *cmd = &md->commands[i];
-
if (cmd->type != type)
continue;
if (num == 0)
- ncmd = cmd;
+ *mcommand = cmd;
num++;
}
- *mcommand = ncmd;
return num;
}
unsigned long
-bfd_mach_o_stack_addr (type)
- enum bfd_mach_o_cpu_type type;
+bfd_mach_o_stack_addr (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);
+ return 0xc0000000 - 0x04000000;
default:
return 0;
}
}
+/* The following two tables should be kept, as far as possible, in order of
+ most frequently used entries to optimize their use from gas. */
+
+const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
+{
+ { "regular", BFD_MACH_O_S_REGULAR},
+ { "coalesced", BFD_MACH_O_S_COALESCED},
+ { "zerofill", BFD_MACH_O_S_ZEROFILL},
+ { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
+ { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
+ { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
+ { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
+ { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
+ { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
+ { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
+ { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
+ { "interposing", BFD_MACH_O_S_INTERPOSING},
+ { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
+ { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
+ { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
+ { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
+ { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
+ { NULL, 0}
+};
+
+const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
+{
+ { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
+ { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
+ { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
+ { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
+ { "debug", BFD_MACH_O_S_ATTR_DEBUG },
+ { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
+ { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
+ { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
+ { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
+ { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
+ { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
+ { NULL, 0}
+};
+
+/* Get the section type from NAME. Return 256 if NAME is unknown. */
+
+unsigned int
+bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
+{
+ const bfd_mach_o_xlat_name *x;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ for (x = bfd_mach_o_section_type_name; x->name; x++)
+ if (strcmp (x->name, name) == 0)
+ {
+ /* We found it... does the target support it? */
+ if (bed->bfd_mach_o_section_type_valid_for_target == NULL
+ || bed->bfd_mach_o_section_type_valid_for_target (x->val))
+ return x->val; /* OK. */
+ else
+ break; /* Not supported. */
+ }
+ /* Maximum section ID = 0xff. */
+ return 256;
+}
+
+/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
+
+unsigned int
+bfd_mach_o_get_section_attribute_from_name (const char *name)
+{
+ const bfd_mach_o_xlat_name *x;
+
+ for (x = bfd_mach_o_section_attribute_name; x->name; x++)
+ if (strcmp (x->name, name) == 0)
+ return x->val;
+ return (unsigned int)-1;
+}
+
int
-bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
- bfd *abfd;
- unsigned char **rbuf;
- unsigned int *rlen;
+bfd_mach_o_core_fetch_environment (bfd *abfd,
+ unsigned char **rbuf,
+ unsigned int *rlen)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
- unsigned int i = 0;
+ bfd_mach_o_load_command *cmd;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- bfd_mach_o_segment_command *seg = NULL;
+ bfd_mach_o_segment_command *seg;
- if (cur->type != BFD_MACH_O_LC_SEGMENT)
+ if (cmd->type != BFD_MACH_O_LC_SEGMENT)
continue;
- seg = &cur->command.segment;
+ seg = &cmd->command.segment;
if ((seg->vmaddr + seg->vmsize) == stackaddr)
{
unsigned char *buf = bfd_malloc (1024);
unsigned long size = 1024;
+ if (buf == NULL)
+ return -1;
for (;;)
{
bfd_size_type nread = 0;
if (size > (end - start))
size = (end - start);
- buf = bfd_realloc (buf, size);
+ buf = bfd_realloc_or_free (buf, size);
+ if (buf == NULL)
+ return -1;
+
+ if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
+ {
+ free (buf);
+ return -1;
+ }
- bfd_seek (abfd, end - size, SEEK_SET);
nread = bfd_bread (buf, size, abfd);
-
+
if (nread != size)
- return -1;
-
+ {
+ free (buf);
+ return -1;
+ }
+
for (offset = 4; offset <= size; offset += 4)
{
- unsigned long val = *((unsigned long *) (buf + size - offset));
+ unsigned long val;
+ val = *((unsigned long *) (buf + size - offset));
if (! found_nonnull)
{
if (val != 0)
}
else if (val == 0x0)
{
- unsigned long bottom = seg->fileoff + seg->filesize - offset;
- unsigned long top = seg->fileoff + seg->filesize - 4;
+ unsigned long bottom;
+ unsigned long top;
+ bottom = seg->fileoff + seg->filesize - offset;
+ top = seg->fileoff + seg->filesize - 4;
*rbuf = bfd_malloc (top - bottom);
+ if (*rbuf == NULL)
+ return -1;
*rlen = top - bottom;
memcpy (*rbuf, buf + size - *rlen, *rlen);
+ free (buf);
return 0;
}
}
size *= 2;
}
+
+ free (buf);
}
}
}
char *
-bfd_mach_o_core_file_failing_command (abfd)
- bfd *abfd;
+bfd_mach_o_core_file_failing_command (bfd *abfd)
{
unsigned char *buf = NULL;
unsigned int len = 0;
- int ret = -1;
+ int ret;
ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
if (ret < 0)
return NULL;
- return buf;
+ return (char *) buf;
}
int
-bfd_mach_o_core_file_failing_signal (abfd)
- bfd *abfd ATTRIBUTE_UNUSED;
+bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
{
return 0;
}
-boolean
-bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd ATTRIBUTE_UNUSED;
- bfd *exec_bfd ATTRIBUTE_UNUSED;
+static bfd_mach_o_uuid_command *
+bfd_mach_o_lookup_uuid_command (bfd *abfd)
+{
+ bfd_mach_o_load_command *uuid_cmd = NULL;
+ int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
+ if (ncmd != 1 || uuid_cmd == NULL)
+ return FALSE;
+ return &uuid_cmd->command.uuid;
+}
+
+/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
+
+static bfd_boolean
+bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
+{
+ bfd_mach_o_uuid_command *dsym_uuid_cmd;
+
+ BFD_ASSERT (abfd);
+ BFD_ASSERT (uuid_cmd);
+
+ if (!bfd_check_format (abfd, bfd_object))
+ return FALSE;
+
+ if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
+ || bfd_mach_o_get_data (abfd) == NULL
+ || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
+ return FALSE;
+
+ dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
+ if (dsym_uuid_cmd == NULL)
+ return FALSE;
+
+ if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
+ sizeof (uuid_cmd->uuid)) != 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
+ The caller is responsible for closing the returned BFD object and
+ its my_archive if the returned BFD is in a fat dSYM. */
+
+static bfd *
+bfd_mach_o_find_dsym (const char *dsym_filename,
+ const bfd_mach_o_uuid_command *uuid_cmd,
+ const bfd_arch_info_type *arch)
+{
+ bfd *base_dsym_bfd, *dsym_bfd;
+
+ BFD_ASSERT (uuid_cmd);
+
+ base_dsym_bfd = bfd_openr (dsym_filename, NULL);
+ if (base_dsym_bfd == NULL)
+ return NULL;
+
+ dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
+ if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
+ return dsym_bfd;
+
+ bfd_close (dsym_bfd);
+ if (base_dsym_bfd != dsym_bfd)
+ bfd_close (base_dsym_bfd);
+
+ return NULL;
+}
+
+/* Return a BFD created from a dSYM file for ABFD.
+ The caller is responsible for closing the returned BFD object, its
+ filename, and its my_archive if the returned BFD is in a fat dSYM. */
+
+static bfd *
+bfd_mach_o_follow_dsym (bfd *abfd)
+{
+ char *dsym_filename;
+ bfd_mach_o_uuid_command *uuid_cmd;
+ bfd *dsym_bfd, *base_bfd = abfd;
+ const char *base_basename;
+
+ if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
+ return NULL;
+
+ if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
+ base_bfd = abfd->my_archive;
+ /* BFD may have been opened from a stream. */
+ if (base_bfd->filename == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return NULL;
+ }
+ base_basename = lbasename (base_bfd->filename);
+
+ uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
+ if (uuid_cmd == NULL)
+ return NULL;
+
+ /* TODO: We assume the DWARF file has the same as the binary's.
+ It seems apple's GDB checks all files in the dSYM bundle directory.
+ http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
+ */
+ dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
+ + strlen (dsym_subdir) + 1
+ + strlen (base_basename) + 1);
+ if (dsym_filename == NULL)
+ return NULL;
+
+ sprintf (dsym_filename, "%s%s/%s",
+ base_bfd->filename, dsym_subdir, base_basename);
+
+ dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
+ bfd_get_arch_info (abfd));
+ if (dsym_bfd == NULL)
+ free (dsym_filename);
+
+ return dsym_bfd;
+}
+
+bfd_boolean
+bfd_mach_o_find_nearest_line (bfd *abfd,
+ asymbol **symbols,
+ asection *section,
+ bfd_vma offset,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *line_ptr,
+ unsigned int *discriminator_ptr)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ if (mdata == NULL)
+ return FALSE;
+ switch (mdata->header.filetype)
+ {
+ case BFD_MACH_O_MH_OBJECT:
+ break;
+ case BFD_MACH_O_MH_EXECUTE:
+ case BFD_MACH_O_MH_DYLIB:
+ case BFD_MACH_O_MH_BUNDLE:
+ case BFD_MACH_O_MH_KEXT_BUNDLE:
+ if (mdata->dwarf2_find_line_info == NULL)
+ {
+ mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
+ /* When we couldn't find dSYM for this binary, we look for
+ the debug information in the binary itself. In this way,
+ we won't try finding separated dSYM again because
+ mdata->dwarf2_find_line_info will be filled. */
+ if (! mdata->dsym_bfd)
+ break;
+ if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
+ dwarf_debug_sections, symbols,
+ &mdata->dwarf2_find_line_info,
+ FALSE))
+ return FALSE;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr, discriminator_ptr,
+ dwarf_debug_sections,
+ &mdata->dwarf2_find_line_info);
+}
+
+bfd_boolean
+bfd_mach_o_close_and_cleanup (bfd *abfd)
{
- return true;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
+ {
+ _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
+ bfd_mach_o_free_cached_info (abfd);
+ if (mdata->dsym_bfd != NULL)
+ {
+ bfd *fat_bfd = mdata->dsym_bfd->my_archive;
+#if 0
+ /* FIXME: PR 19435: This calculation to find the memory allocated by
+ bfd_mach_o_follow_dsym for the filename does not always end up
+ selecting the correct pointer. Unfortunately this problem is
+ very hard to reproduce on a non Mach-O native system, so until it
+ can be traced and fixed on such a system, this code will remain
+ commented out. This does mean that there will be a memory leak,
+ but it is small, and happens when we are closing down, so it
+ should not matter too much. */
+ char *dsym_filename = (char *)(fat_bfd
+ ? fat_bfd->filename
+ : mdata->dsym_bfd->filename);
+#endif
+ bfd_close (mdata->dsym_bfd);
+ mdata->dsym_bfd = NULL;
+ if (fat_bfd)
+ bfd_close (fat_bfd);
+#if 0
+ free (dsym_filename);
+#endif
+ }
+ }
+
+ return _bfd_generic_close_and_cleanup (abfd);
}
-#define TARGET_NAME mach_o_be_vec
-#define TARGET_STRING "mach-o-be"
-#define TARGET_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 0
+bfd_boolean
+bfd_mach_o_free_cached_info (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ asection *asect;
+ free (mdata->dyn_reloc_cache);
+ mdata->dyn_reloc_cache = NULL;
+ for (asect = abfd->sections; asect != NULL; asect = asect->next)
+ {
+ free (asect->relocation);
+ asect->relocation = NULL;
+ }
+
+ return TRUE;
+}
+#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
+
+#define bfd_mach_o_canonicalize_one_reloc NULL
+#define bfd_mach_o_swap_reloc_out NULL
+#define bfd_mach_o_print_thread NULL
+#define bfd_mach_o_tgt_seg_table NULL
+#define bfd_mach_o_section_type_valid_for_tgt NULL
+
+#define TARGET_NAME mach_o_be_vec
+#define TARGET_STRING "mach-o-be"
+#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
+#define TARGET_BIG_ENDIAN 1
+#define TARGET_ARCHIVE 0
+#define TARGET_PRIORITY 1
#include "mach-o-target.c"
#undef TARGET_NAME
#undef TARGET_STRING
+#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
+#undef TARGET_PRIORITY
-#define TARGET_NAME mach_o_le_vec
-#define TARGET_STRING "mach-o-le"
-#define TARGET_BIG_ENDIAN 0
-#define TARGET_ARCHIVE 0
+#define TARGET_NAME mach_o_le_vec
+#define TARGET_STRING "mach-o-le"
+#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
+#define TARGET_BIG_ENDIAN 0
+#define TARGET_ARCHIVE 0
+#define TARGET_PRIORITY 1
#include "mach-o-target.c"
#undef TARGET_NAME
#undef TARGET_STRING
+#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
+#undef TARGET_PRIORITY
-#define TARGET_NAME mach_o_fat_vec
-#define TARGET_STRING "mach-o-fat"
-#define TARGET_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 1
+/* Not yet handled: creating an archive. */
+#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
+
+#define bfd_mach_o_close_and_cleanup bfd_mach_o_fat_close_and_cleanup
+
+/* Not used. */
+#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
+#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
+#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
+
+#define TARGET_NAME mach_o_fat_vec
+#define TARGET_STRING "mach-o-fat"
+#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
+#define TARGET_BIG_ENDIAN 1
+#define TARGET_ARCHIVE 1
+#define TARGET_PRIORITY 0
#include "mach-o-target.c"
#undef TARGET_NAME
#undef TARGET_STRING
+#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
-
+#undef TARGET_PRIORITY
projects / deliverable / binutils-gdb.git / blobdiff