/* Mach-O support for BFD.
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2019 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,
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ 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 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);
-#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_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
-#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_find_inliner_info _bfd_nosymbols_find_inliner_info
-#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_is_group_section bfd_generic_is_group_section
-#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
-#define bfd_mach_o_section_already_linked _bfd_generic_section_already_linked
-#define bfd_mach_o_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
-#define bfd_mach_o_core_file_matches_executable_p generic_core_file_matches_executable_p
-
-
-/* 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
+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 (abfd->tdata.mach_o_data == NULL)
- return 0;
- return 1;
+ if (bfd_mach_o_get_data (abfd) == NULL)
+ return FALSE;
+ return TRUE;
}
-/* Copy any private info we understand from the input symbol
- to the output symbol. */
-
-static bfd_boolean
-bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
- asymbol *isymbol ATTRIBUTE_UNUSED,
- bfd *obfd ATTRIBUTE_UNUSED,
- asymbol *osymbol ATTRIBUTE_UNUSED)
+static INLINE bfd_boolean
+mach_o_wide_p (bfd_mach_o_header *header)
{
- return TRUE;
+ switch (header->version)
+ {
+ case 1:
+ return FALSE;
+ case 2:
+ return TRUE;
+ default:
+ BFD_FAIL ();
+ return FALSE;
+ }
}
-/* Copy any private info we understand from the input section
- to the output section. */
-
-static bfd_boolean
-bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
- asection *isection ATTRIBUTE_UNUSED,
- bfd *obfd ATTRIBUTE_UNUSED,
- asection *osection ATTRIBUTE_UNUSED)
+static INLINE bfd_boolean
+bfd_mach_o_wide_p (bfd *abfd)
{
- return TRUE;
+ return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
}
-/* Copy any private info we understand from the input bfd
- to the output bfd. */
+/* 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. */
-static bfd_boolean
-bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+/* __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)
{
- BFD_ASSERT (bfd_mach_o_valid (ibfd));
- BFD_ASSERT (bfd_mach_o_valid (obfd));
+ 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;
- obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
- obfd->tdata.mach_o_data->ibfd = ibfd;
- return TRUE;
+ return NULL;
}
-static long
-bfd_mach_o_count_symbols (bfd *abfd)
+/* 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)
{
- bfd_mach_o_data_struct *mdata = NULL;
- long nsyms = 0;
- unsigned long i;
+ 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;
- BFD_ASSERT (bfd_mach_o_valid (abfd));
- mdata = abfd->tdata.mach_o_data;
+ if (bfd_name[0] != '.')
+ return NULL;
- 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;
- }
+ /* 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 nsyms;
+ return NULL;
}
-static long
-bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
-{
- long nsyms = bfd_mach_o_count_symbols (abfd);
+/* Convert Mach-O section name to BFD.
- if (nsyms < 0)
- return nsyms;
+ 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.
- return ((nsyms + 1) * sizeof (asymbol *));
-}
+ 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). */
-static long
-bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
+void
+bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
+ const char *secname, const char **name,
+ flagword *flags)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
- long nsyms = bfd_mach_o_count_symbols (abfd);
- asymbol **csym = alocation;
- unsigned long i, j;
+ 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;
+ }
- if (nsyms < 0)
- return nsyms;
+ /* ... else we make up a bfd name from the segment concatenated with the
+ section. */
- for (i = 0; i < mdata->header.ncmds; i++)
+ len = 16 + 1 + 16 + 1;
+
+ /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
+ with an underscore. */
+ if (segname[0] != '_')
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
- {
- bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
+ static const char seg_pfx[] = "LC_SEGMENT.";
- if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
- {
- fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i);
- return 0;
- }
+ pfx = seg_pfx;
+ len += sizeof (seg_pfx) - 1;
+ }
- BFD_ASSERT (sym->symbols != NULL);
+ res = bfd_alloc (abfd, len);
+ if (res == NULL)
+ return;
+ snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
+ *name = res;
+}
- for (j = 0; j < sym->nsyms; j++)
- {
- BFD_ASSERT (csym < (alocation + nsyms));
- *csym++ = &sym->symbols[j];
- }
- }
- }
+/* Convert a bfd section name to a Mach-O segment + section name.
- *csym++ = NULL;
+ 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.
- return nsyms;
-}
+ Otherwise, expand the bfd_name (assumed to be in the form
+ "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
-static void
-bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
- asymbol *symbol,
- symbol_info *ret)
+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)
{
- bfd_symbol_info (symbol, ret);
-}
+ 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;
+ }
-static void
-bfd_mach_o_print_symbol (bfd *abfd,
- PTR afile,
- asymbol *symbol,
- bfd_print_symbol_type how)
-{
- FILE *file = (FILE *) afile;
+ /* .. 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;
- switch (how)
+ /* Find a dot. */
+ dot = strchr (name, '.');
+ len = strlen (name);
+
+ /* Try to split name into segment and section names. */
+ if (dot && dot != name)
{
- 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);
+ 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;
}
-static void
-bfd_mach_o_convert_architecture (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;
+/* Return the size of an entry for section SEC.
+ Must be called only for symbol pointer section and symbol stubs
+ sections. */
- switch (mtype)
+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_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;
+ 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:
- *subtype = bfd_arch_unknown;
+ BFD_FAIL ();
+ return 0;
}
}
-static int
-bfd_mach_o_write_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;
-}
+/* Return the number of indirect symbols for a section.
+ Must be called only for symbol pointer section and symbol stubs
+ sections. */
-static int
-bfd_mach_o_scan_write_thread (bfd *abfd,
- bfd_mach_o_load_command *command)
+unsigned int
+bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
{
- bfd_mach_o_thread_command *cmd = &command->command.thread;
- unsigned int i;
- unsigned char buf[8];
- bfd_vma offset;
- unsigned int nflavours;
+ unsigned int elsz;
- 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);
+ elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
+ if (elsz == 0)
+ return 0;
+ else
+ return sec->size / elsz;
+}
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
- return -1;
+/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
- offset += cmd->flavours[i].size + 8;
- }
+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);
- return 0;
+ if (mdata->last_command != NULL)
+ mdata->last_command->next = cmd;
+ else
+ mdata->first_command = cmd;
+ mdata->last_command = cmd;
+ cmd->next = NULL;
}
-static int
-bfd_mach_o_scan_write_section (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;
-}
+/* Copy any private info we understand from the input symbol
+ to the output symbol. */
-static int
-bfd_mach_o_scan_write_segment (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_boolean
+bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
+ asymbol *isymbol,
+ bfd *obfd ATTRIBUTE_UNUSED,
+ asymbol *osymbol)
{
- unsigned char buf[48];
- bfd_mach_o_segment_command *seg = &command->command.segment;
- unsigned long i;
+ bfd_mach_o_asymbol *os, *is;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+ 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;
- 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;
+ return TRUE;
+}
- {
- char buf[1024];
- bfd_vma nbytes = seg->filesize;
- bfd_vma curoff = seg->fileoff;
+/* Copy any private info we understand from the input section
+ to the output section. */
- while (nbytes > 0)
- {
- bfd_vma thisread = nbytes;
+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 (thisread > 1024)
- thisread = 1024;
+ if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
+ || obfd->xvec->flavour != bfd_target_mach_o_flavour)
+ return TRUE;
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
- return -1;
+ BFD_ASSERT (is != NULL && os != NULL);
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
- return -1;
+ os->flags = is->flags;
+ os->reserved1 = is->reserved1;
+ os->reserved2 = is->reserved2;
+ os->reserved3 = is->reserved3;
- nbytes -= thisread;
- curoff += thisread;
- }
- }
+ return TRUE;
+}
- for (i = 0; i < seg->nsects; i++)
+static const char *
+cputype (unsigned long value)
+{
+ switch (value)
{
- bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
-
- if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
- return -1;
+ 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>");
}
-
- return 0;
}
-static int
-bfd_mach_o_scan_write_symtab_symbols (bfd *abfd,
- bfd_mach_o_load_command *command)
+static const char *
+cpusubtype (unsigned long cputype, unsigned long cpusubtype)
{
- bfd_mach_o_symtab_command *sym = &command->command.symtab;
- asymbol *s = NULL;
- unsigned long i;
+ static char buffer[128];
- for (i = 0; i < sym->nsyms; i++)
+ buffer[0] = 0;
+ switch (cpusubtype & BFD_MACH_O_CPU_SUBTYPE_MASK)
{
- unsigned char buf[12];
- bfd_vma symoff = sym->symoff + (i * 12);
- unsigned char ntype = 0;
- unsigned char nsect = 0;
- short ndesc = 0;
+ case 0:
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_LIB64:
+ sprintf (buffer, " (LIB64)"); break;
+ default:
+ sprintf (buffer, _("<unknown mask flags>")); break;
+ }
- s = &sym->symbols[i];
+ cpusubtype &= ~ BFD_MACH_O_CPU_SUBTYPE_MASK;
- /* Instead just set from the stored values. */
- ntype = (s->udata.i >> 24) & 0xff;
- nsect = (s->udata.i >> 16) & 0xff;
- ndesc = s->udata.i & 0xffff;
+ switch (cputype)
+ {
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ case BFD_MACH_O_CPU_TYPE_I386:
+ switch (cpusubtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_X86_ALL:
+ return strcat (buffer, " (X86_ALL)");
+ default:
+ break;
+ }
+ break;
- 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);
+ case BFD_MACH_O_CPU_TYPE_ARM:
+ switch (cpusubtype)
+ {
+ 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;
- bfd_seek (abfd, symoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ switch (cpusubtype)
{
- fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
- 12, (unsigned long) symoff);
- return -1;
+ 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;
}
- return 0;
+ if (cpusubtype != 0)
+ return strcat (buffer, _(" (<unknown>)"));
+
+ return buffer;
}
-static int
-bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_boolean
+bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void *ptr)
{
- bfd_mach_o_symtab_command *seg = &command->command.symtab;
- unsigned char buf[16];
-
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
-
- bfd_h_put_32 (abfd, seg->symoff, buf);
- bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
- bfd_h_put_32 (abfd, seg->stroff, buf + 8);
- bfd_h_put_32 (abfd, seg->strsize, buf + 12);
+ 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);
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
- return -1;
-
- if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
- return -1;
-
- return 0;
+ return TRUE;
}
-static bfd_boolean
-bfd_mach_o_write_contents (bfd *abfd)
+/* Copy any private info we understand from the input bfd
+ to the output bfd. */
+
+bfd_boolean
+bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
{
- unsigned int i;
- asection *s;
+ bfd_mach_o_data_struct *imdata;
+ bfd_mach_o_data_struct *omdata;
+ bfd_mach_o_load_command *icmd;
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
+ || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
+ return TRUE;
- /* Write data sections first in case they overlap header data to be
- written later. */
+ BFD_ASSERT (bfd_mach_o_valid (ibfd));
+ BFD_ASSERT (bfd_mach_o_valid (obfd));
- for (s = abfd->sections; s != (asection *) NULL; s = s->next)
- ;
+ imdata = bfd_mach_o_get_data (ibfd);
+ omdata = bfd_mach_o_get_data (obfd);
- /* Now write header information. */
- if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
- return FALSE;
+ /* Copy header flags. */
+ omdata->header.flags = imdata->header.flags;
- for (i = 0; i < mdata->header.ncmds; i++)
+ /* PR 23299. Copy the cputype. */
+ if (imdata->header.cputype != omdata->header.cputype)
{
- unsigned char buf[8];
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- unsigned long typeflag;
-
- typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
+ 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);
+ }
- bfd_h_put_32 (abfd, typeflag, buf);
- bfd_h_put_32 (abfd, cur->len, buf + 4);
+ /* Copy the cpusubtype. */
+ omdata->header.cpusubtype = imdata->header.cpusubtype;
- bfd_seek (abfd, cur->offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
- return FALSE;
+ /* Copy commands. */
+ for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
+ {
+ bfd_mach_o_load_command *ocmd;
- switch (cur->type)
+ switch (icmd->type)
{
- case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_scan_write_segment (abfd, cur) != 0)
+ 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;
- 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;
+
+ default:
+ /* Command is not copied. */
+ continue;
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:
+ }
+
+ switch (icmd->type)
+ {
case BFD_MACH_O_LC_LOAD_DYLIB:
- case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
- case BFD_MACH_O_LC_ID_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:
- 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:
+ {
+ 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:
- fprintf (stderr,
- "unable to write unknown load command 0x%lx\n",
- (long) cur->type);
- return FALSE;
+ /* That command should be handled. */
+ abort ();
}
+
+ /* Insert command. */
+ bfd_mach_o_append_command (obfd, ocmd);
}
return TRUE;
}
-static int
-bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
- bfd_boolean b ATTRIBUTE_UNUSED)
+/* 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)
{
- return 0;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ if (!mdata)
+ return FALSE;
+
+ mdata->header.flags = flags;
+ return TRUE;
}
-/* Make an empty symbol. This is required only because
- bfd_make_section_anyway wants to create a symbol for the section. */
+/* Count the total number of symbols. */
-static asymbol *
-bfd_mach_o_make_empty_symbol (bfd *abfd)
+static long
+bfd_mach_o_count_symbols (bfd *abfd)
{
- asymbol *new;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- new = bfd_zalloc (abfd, sizeof (* new));
- if (new == NULL)
- return new;
- new->the_bfd = abfd;
- return new;
+ if (mdata->symtab == NULL)
+ return 0;
+ return mdata->symtab->nsyms;
}
-static int
-bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
+long
+bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
{
- unsigned char buf[28];
- bfd_vma (*get32) (const void *) = NULL;
+ long nsyms = bfd_mach_o_count_symbols (abfd);
- bfd_seek (abfd, 0, SEEK_SET);
+ return ((nsyms + 1) * sizeof (asymbol *));
+}
- if (bfd_bread ((PTR) buf, 28, abfd) != 28)
- return -1;
+long
+bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ long nsyms = bfd_mach_o_count_symbols (abfd);
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
+ unsigned long j;
- if (bfd_getb32 (buf) == 0xfeedface)
- {
- header->byteorder = BFD_ENDIAN_BIG;
- header->magic = 0xfeedface;
- get32 = bfd_getb32;
- }
- else if (bfd_getl32 (buf) == 0xfeedface)
+ if (nsyms < 0)
+ return nsyms;
+
+ if (nsyms == 0)
{
- header->byteorder = BFD_ENDIAN_LITTLE;
- header->magic = 0xfeedface;
- get32 = bfd_getl32;
+ /* Do not try to read symbols if there are none. */
+ alocation[0] = NULL;
+ return 0;
}
- else
+
+ if (!bfd_mach_o_read_symtab_symbols (abfd))
{
- header->byteorder = BFD_ENDIAN_UNKNOWN;
- return -1;
+ _bfd_error_handler
+ (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
+ return 0;
}
- 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);
+ BFD_ASSERT (sym->symbols != NULL);
- return 0;
-}
+ for (j = 0; j < sym->nsyms; j++)
+ alocation[j] = &sym->symbols[j].symbol;
-static asection *
-bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section)
-{
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SEGMENT";
- unsigned int snamelen;
- flagword flags;
+ alocation[j] = NULL;
- snamelen = strlen (prefix) + 1
- + strlen (section->segname) + 1
- + strlen (section->sectname) + 1;
+ return nsyms;
+}
- sname = bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return NULL;
- sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
+/* Create synthetic symbols for indirect symbols. */
- flags = SEC_ALLOC;
- if (!(section->flags & BFD_MACH_O_S_ZEROFILL))
- flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
- if (bfdsec == NULL)
- return NULL;
+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;
- bfdsec->vma = section->addr;
- bfdsec->lma = section->addr;
- bfdsec->size = section->size;
- bfdsec->filepos = section->offset;
- bfdsec->alignment_power = section->align;
+ /* 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;
- return bfdsec;
-}
+ for (j = 0; j < count; j++)
+ {
+ const char * strng;
+ unsigned int isym = dysymtab->indirect_syms[j];
-static int
-bfd_mach_o_scan_read_section (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset)
-{
- unsigned char buf[68];
+ /* 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);
+ }
- bfd_seek (abfd, offset, SEEK_SET);
- if (bfd_bread ((PTR) buf, 68, abfd) != 68)
+ 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;
- 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;
+ 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;
- return 0;
-}
+ 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];
-int
-bfd_mach_o_scan_read_symtab_symbol (bfd *abfd,
- bfd_mach_o_symtab_command *sym,
- asymbol *s,
- unsigned long i)
-{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
- bfd_vma symoff = sym->symoff + (i * 12);
- unsigned char buf[12];
- unsigned char type = -1;
- unsigned char section = -1;
- short desc = -1;
- unsigned long value = -1;
- unsigned long stroff = -1;
- unsigned int symtype = -1;
+ /* PR 17512: file: 04d64d9b. */
+ if (((char *) s) + sizeof (* s) > s_end)
+ goto fail;
- BFD_ASSERT (sym->strtab != NULL);
+ s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
+ s->section = sec->bfdsection;
+ s->value = addr - sec->addr;
+ s->udata.p = NULL;
- bfd_seek (abfd, symoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, 12, abfd) != 12)
- {
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
- 12, (unsigned long) symoff);
- return -1;
+ 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;
+ }
}
- 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);
+ return n;
- 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;
- }
+ 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);
+}
- s->the_bfd = abfd;
- s->name = sym->strtab + stroff;
- s->value = value;
- s->udata.i = (type << 24) | (section << 16) | desc;
- s->flags = 0x0;
+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;
- if (type & BFD_MACH_O_N_STAB)
+ switch (how)
{
- s->flags |= BSF_DEBUGGING;
- s->section = bfd_und_section_ptr;
+ 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);
}
- 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;
- }
+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 (symtype)
+ 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_N_UNDF:
- s->section = bfd_und_section_ptr;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
+ *subtype = bfd_mach_arm_4T;
break;
- case BFD_MACH_O_N_PBUD:
- s->section = bfd_und_section_ptr;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
+ *subtype = bfd_mach_arm_4T; /* Best fit ? */
break;
- case BFD_MACH_O_N_ABS:
- s->section = bfd_abs_section_ptr;
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
+ *subtype = bfd_mach_arm_5TE;
break;
- case BFD_MACH_O_N_SECT:
- if ((section > 0) && (section <= mdata->nsects))
- {
- s->section = mdata->sections[section - 1]->bfdsection;
- s->value = s->value - mdata->sections[section - 1]->addr;
- }
- else
- {
- /* Mach-O uses 0 to mean "no section"; not an error. */
- if (section != 0)
- {
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
- "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
- s->name, section, mdata->nsects);
- }
- s->section = bfd_und_section_ptr;
- }
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
+ *subtype = bfd_mach_arm_XScale;
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;
+ 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:
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
- "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
- s->name, symtype);
- s->section = bfd_und_section_ptr;
break;
}
+ 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;
}
-
- return 0;
}
-int
-bfd_mach_o_scan_read_symtab_strtab (bfd *abfd,
- bfd_mach_o_symtab_command *sym)
-{
- BFD_ASSERT (sym->strtab == NULL);
+/* 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. */
- if (abfd->flags & BFD_IN_MEMORY)
+static int
+bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
+{
+ if (len % 4 != 0)
{
- struct bfd_in_memory *b;
+ char pad[4] = {0,0,0,0};
+ unsigned int padlen = 4 - (len % 4);
- b = (struct bfd_in_memory *) abfd->iostream;
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
- if ((sym->stroff + sym->strsize) > b->size)
- {
- bfd_set_error (bfd_error_file_truncated);
- return -1;
- }
- sym->strtab = (char *) b->buffer + sym->stroff;
- return 0;
+ return padlen;
}
+ else
+ return 0;
+}
- sym->strtab = bfd_alloc (abfd, sym->strsize);
- if (sym->strtab == NULL)
- return -1;
+/* 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;
- bfd_seek (abfd, sym->stroff, SEEK_SET);
- if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
+ if (len % align != 0)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
- sym->strsize, sym->stroff);
- return -1;
- }
+ char pad[8] = {0};
+ unsigned int padlen = align - (len % align);
- return 0;
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
+
+ return padlen;
+ }
+ else
+ return 0;
}
-int
-bfd_mach_o_scan_read_symtab_symbols (bfd *abfd,
- bfd_mach_o_symtab_command *sym)
+static bfd_boolean
+bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
{
- unsigned long i;
- int ret;
+ struct mach_o_header_external raw;
+ unsigned int size;
- BFD_ASSERT (sym->symbols == NULL);
- sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
+ size = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
- if (sym->symbols == NULL)
- {
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
- return -1;
- }
+ 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);
- ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
- if (ret != 0)
- return ret;
+ if (mach_o_wide_p (header))
+ bfd_h_put_32 (abfd, header->reserved, raw.reserved);
- 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;
- }
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bwrite (&raw, size, abfd) != size)
+ return FALSE;
- return 0;
+ return TRUE;
}
-int
-bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd,
- bfd_mach_o_dysymtab_command *dysym,
- bfd_mach_o_symtab_command *sym,
- asymbol *s,
- unsigned long i)
+static bfd_boolean
+bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
{
- unsigned long isymoff = dysym->indirectsymoff + (i * 4);
- unsigned long symindex;
- unsigned char buf[4];
+ bfd_mach_o_thread_command *cmd = &command->command.thread;
+ unsigned int i;
+ struct mach_o_thread_command_external raw;
+ unsigned int offset;
- BFD_ASSERT (i < dysym->nindirectsyms);
+ BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
+ || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
- bfd_seek (abfd, isymoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, 4, abfd) != 4)
+ offset = BFD_MACH_O_LC_SIZE;
+ for (i = 0; i < cmd->nflavours; i++)
{
- 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);
+ BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
+ BFD_ASSERT (cmd->flavours[i].offset ==
+ (command->offset + offset + BFD_MACH_O_LC_SIZE));
- return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
-}
+ bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
+ bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
-static const char *
-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";
- default: return "UNKNOWN";
+ 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 const char *
-bfd_mach_o_ppc_flavour_string (unsigned int flavour)
+static bfd_boolean
+bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
{
- switch ((int) flavour)
+ 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)
+ {
+ /* 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;
+
+ BFD_ASSERT (nbr_segcmd >= 2);
+
+ /* The pagezero. */
+ cmd = &commands[0];
+ bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
+
+ /* 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++;
+ }
+
+ /* The linkedit. */
+ bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
+ }
+
+ if (symtab_idx >= 0)
+ {
+ /* Init symtab command. */
+ bfd_mach_o_load_command *cmd = &commands[symtab_idx];
+
+ cmd->type = BFD_MACH_O_LC_SYMTAB;
+ cmd->type_required = FALSE;
+ }
+
+ /* If required, setup symtab command, see comment above about the quality
+ of this test. */
+ if (dysymtab_idx >= 0)
+ {
+ bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
+
+ cmd->type = BFD_MACH_O_LC_DYSYMTAB;
+ cmd->type_required = FALSE;
+ }
+
+ /* Create the main command. */
+ if (main_idx >= 0)
+ {
+ bfd_mach_o_load_command *cmd = &commands[main_idx];
+
+ cmd->type = BFD_MACH_O_LC_MAIN;
+ cmd->type_required = TRUE;
+
+ cmd->command.main.entryoff = 0;
+ cmd->command.main.stacksize = 0;
+ }
+
+ /* Layout commands. */
+ if (! bfd_mach_o_layout_commands (mdata))
+ return FALSE;
+
+ /* 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)
+ {
+ 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;
+
+ /* Skip pagezero and linkedit segments. */
+ for (i = 1; i < nbr_segcmd - 1; i++)
+ {
+ bfd_mach_o_segment_command *seg = &commands[i].command.segment;
+
+ if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
+ return FALSE;
+
+ if (seg->vmaddr + seg->vmsize > maxvma)
+ maxvma = seg->vmaddr + seg->vmsize;
+ }
+
+ /* Set the size of __PAGEZERO. */
+ commands[0].command.segment.vmsize =
+ commands[1].command.segment.vmaddr;
+
+ /* Set the vma and fileoff of __LINKEDIT. */
+ commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
+ commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
+
+ /* 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;
+ }
+
+ return TRUE;
+}
+
+/* Set the contents of a section. */
+
+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;
+
+ /* 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;
+
+ if (count == 0)
+ return TRUE;
+
+ pos = section->filepos + offset;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
+ return FALSE;
+
+ return TRUE;
+}
+
+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. */
+
+asymbol *
+bfd_mach_o_make_empty_symbol (bfd *abfd)
+{
+ 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 bfd_boolean
+bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
+{
+ struct mach_o_header_external raw;
+ unsigned int size;
+ bfd_vma (*get32) (const void *) = NULL;
+
+ /* 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 (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 = BFD_MACH_O_MH_MAGIC_64;
+ header->version = 2;
+ get32 = bfd_getb32;
+ }
+ else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
+ {
+ 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 FALSE;
+ }
+
+ /* 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;
+}
+
+bfd_boolean
+bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
+{
+ bfd_mach_o_section *s;
+ unsigned bfdalign = bfd_section_alignment (sec);
+
+ s = bfd_mach_o_get_mach_o_section (sec);
+ if (s == NULL)
+ {
+ flagword bfd_flags;
+ static const mach_o_section_name_xlat * xlat;
+
+ 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);
+ }
+
+ 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
+ {
+ if ((flags & SEC_DEBUGGING) == 0)
+ flags |= SEC_ALLOC;
+ }
+
+ 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 asection *
+bfd_mach_o_make_bfd_section (bfd *abfd,
+ const unsigned char *segname,
+ const unsigned char *sectname)
+{
+ const char *sname;
+ flagword flags;
+
+ bfd_mach_o_convert_section_name_to_bfd
+ (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
+ if (sname == NULL)
+ return NULL;
+
+ return bfd_make_section_anyway_with_flags (abfd, sname, flags);
+}
+
+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 asection *
+bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
+{
+ struct mach_o_section_64_external raw;
+ asection *sec;
+ bfd_mach_o_section *section;
+
+ if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
+ != BFD_MACH_O_SECTION_64_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_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);
+
+ bfd_mach_o_init_section_from_mach_o (sec, prot);
+
+ return sec;
+}
+
+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;
+ symvalue value = -1;
+ unsigned long stroff = -1;
+ unsigned int symtype = -1;
+
+ BFD_ASSERT (sym->strtab != NULL);
+
+ if (bfd_seek (abfd, symoff, SEEK_SET) != 0
+ || bfd_bread (&raw, symwidth, abfd) != symwidth)
+ {
+ _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, 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)
{
- 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";
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
+ stroff,
+ sym->strsize);
+ return FALSE;
+ }
+
+ 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->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 | BFD_MACH_O_N_EXT))
+ s->symbol.flags |= BSF_GLOBAL;
+ else
+ s->symbol.flags |= BSF_LOCAL;
+
+ switch (symtype)
+ {
+ case BFD_MACH_O_N_UNDF:
+ 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->symbol.section = bfd_und_section_ptr;
+ break;
+ case BFD_MACH_O_N_ABS:
+ s->symbol.section = bfd_abs_section_ptr;
+ break;
+ case BFD_MACH_O_N_SECT:
+ 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;
+ }
+ else
+ {
+ /* Mach-O uses 0 to mean "no section"; not an error. */
+ if (section != 0)
+ {
+ _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->symbol.section = bfd_und_section_ptr;
+ }
+ break;
+ case BFD_MACH_O_N_INDR:
+ /* 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:
+ _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 TRUE;
+}
+
+bfd_boolean
+bfd_mach_o_read_symtab_strtab (bfd *abfd)
+{
+ 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)
+ {
+ struct bfd_in_memory *b;
+
+ b = (struct bfd_in_memory *) abfd->iostream;
+
+ if ((sym->stroff + sym->strsize) > b->size)
+ {
+ bfd_set_error (bfd_error_file_truncated);
+ return FALSE;
+ }
+ sym->strtab = (char *) b->buffer + sym->stroff;
+ }
+ else
+ {
+ /* 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 TRUE;
+}
+
+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;
+
+ 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)
+ {
+ _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
+ "unable to allocate memory for symbols"));
+ sym->nsyms = 0;
+ return FALSE;
+ }
+
+ if (!bfd_mach_o_read_symtab_strtab (abfd))
+ goto fail;
+
+ for (i = 0; i < sym->nsyms; i++)
+ if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
+ goto fail;
+
+ 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 (unsigned int flavour)
+{
+ switch ((int) flavour)
+ {
+ 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 (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_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_read_dylinker (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_dylinker_command *cmd = &command->command.dylinker;
+ struct mach_o_str_command_external raw;
+ unsigned int nameoff;
+ unsigned int namelen;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.str);
+
+ 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 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;
+ unsigned int namelen;
- BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
- || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
+ 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;
+ }
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 4, abfd) != 4)
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- nameoff = bfd_h_get_32 (abfd, buf + 0);
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ 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);
cmd->name_offset = command->offset + nameoff;
- cmd->name_len = command->len - nameoff;
-
- if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)
- prefix = "LC_LOAD_DYLINKER";
- else if (command->type == BFD_MACH_O_LC_ID_DYLINKER)
- prefix = "LC_ID_DYLINKER";
- else
- abort ();
-
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
-
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
- return -1;
-
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = command->len - 8;
- bfdsec->filepos = command->offset + 8;
- bfdsec->alignment_power = 0;
-
- cmd->section = bfdsec;
-
- return 0;
+ 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 (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;
- 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));
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 16, abfd) != 16)
- return -1;
+ 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;
- 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);
+ 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;
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 ();
+ cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
+ cmd->linked_modules_offset = command->offset + modoff;
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
+ 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;
+}
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
- return -1;
+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;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = command->len - 8;
- bfdsec->filepos = command->offset + 8;
- bfdsec->alignment_power = 0;
+ cmd->cksum = bfd_get_32 (abfd, raw.cksum);
+ return TRUE;
+}
+
+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 (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 (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_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
+ struct mach_o_fvmlib_command_external raw;
+ unsigned int nameoff;
+ unsigned int namelen;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
- return 0;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ 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 (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;
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)
+ {
+ struct mach_o_thread_command_external raw;
+
+ if (offset >= command->len)
+ return FALSE;
+
+ if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
+ nflavours++;
+ }
+
+ /* Allocate threads. */
+ cmd->flavours = bfd_alloc2
+ (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
+ if (cmd->flavours == NULL)
+ return FALSE;
+ cmd->nflavours = nflavours;
offset = 8;
nflavours = 0;
while (offset != command->len)
{
+ struct mach_o_thread_command_external raw;
+
if (offset >= command->len)
- return -1;
+ return FALSE;
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
+ if (nflavours >= cmd->nflavours)
+ return FALSE;
- 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;
+ 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++;
}
- cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
- if (cmd->flavours == NULL)
- return -1;
- cmd->nflavours = nflavours;
+ for (i = 0; i < nflavours; i++)
+ {
+ asection *bfdsec;
+ unsigned int snamelen;
+ char *sname;
+ const char *flavourstr;
+ const char *prefix = "LC_THREAD";
+ unsigned int j = 0;
+
+ switch (mdata->header.cputype)
+ {
+ case BFD_MACH_O_CPU_TYPE_POWERPC:
+ 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:
+ 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 = bfd_alloc (abfd, snamelen);
+ if (sname == NULL)
+ return FALSE;
+
+ for (;;)
+ {
+ sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
+ if (bfd_get_section_by_name (abfd, sname) == NULL)
+ break;
+ j++;
+ }
+
+ bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
+
+ bfdsec->vma = 0;
+ bfdsec->lma = 0;
+ bfdsec->size = cmd->flavours[i].size;
+ bfdsec->filepos = cmd->flavours[i].offset;
+ bfdsec->alignment_power = 0x0;
+
+ cmd->section = bfdsec;
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ 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_DYSYMTAB);
+
+ {
+ struct mach_o_dysymtab_command_external raw;
+
+ 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);
+ }
+
+ if (cmd->nmodtab != 0)
+ {
+ unsigned int i;
+ int wide = bfd_mach_o_wide_p (abfd);
+ unsigned int module_len = wide ? 56 : 52;
+
+ cmd->dylib_module =
+ bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
+ if (cmd->dylib_module == NULL)
+ return FALSE;
+
+ 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 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);
+ }
+ }
+ }
+
+ if (cmd->ntoc != 0)
+ {
+ unsigned long i;
+
+ cmd->dylib_toc = bfd_alloc2
+ (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
+ if (cmd->dylib_toc == NULL)
+ return FALSE;
+
+ 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 bfd_boolean
+bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ 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);
+
+ 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;
+}
+
+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;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
+
+ if (bfd_bread (cmd->uuid, 16, abfd) != 16)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
+ struct mach_o_linkedit_data_command_external raw;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
+ cmd->datasize = bfd_get_32 (abfd, raw.datasize);
+ return TRUE;
+}
+
+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 (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ off = bfd_get_32 (abfd, raw.str);
+ 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;
+}
+
+static unsigned char *
+bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
+{
+ unsigned char *buf;
+
+ 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;
+}
- offset = 8;
- nflavours = 0;
- while (offset != command->len)
+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)
{
- if (offset >= command->len)
- return -1;
-
- if (nflavours >= cmd->nflavours)
- return -1;
+ cmd->rebase_content =
+ bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
+ if (cmd->rebase_content == NULL)
+ return FALSE;
+ }
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
+ /* 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;
+ }
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
- return -1;
+ /* 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;
+ }
- cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
- cmd->flavours[nflavours].offset = command->offset + offset + 8;
- cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
- offset += cmd->flavours[nflavours].size + 8;
- nflavours++;
+ /* 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;
}
- for (i = 0; i < nflavours; i++)
+ /* Read export content. */
+ if (cmd->export_content == NULL && cmd->export_size != 0)
{
- asection *bfdsec;
- unsigned int snamelen;
- char *sname;
- const char *flavourstr;
- const char *prefix = "LC_THREAD";
- unsigned int j = 0;
+ cmd->export_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->export_off, cmd->export_size);
+ if (cmd->export_content == NULL)
+ return FALSE;
+ }
- switch (mdata->header.cputype)
- {
- case BFD_MACH_O_CPU_TYPE_POWERPC:
- flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
- break;
- case BFD_MACH_O_CPU_TYPE_I386:
- flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
- break;
- default:
- flavourstr = "UNKNOWN_ARCHITECTURE";
- break;
- }
+ return TRUE;
+}
- snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
- sname = bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return -1;
+static bfd_boolean
+bfd_mach_o_read_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;
- for (;;)
- {
- sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
- if (bfd_get_section_by_name (abfd, sname) == NULL)
- break;
- j++;
- }
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
+ 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;
+}
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = cmd->flavours[i].size;
- bfdsec->filepos = cmd->flavours[i].offset;
- bfdsec->alignment_power = 0x0;
+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;
- cmd->section = bfdsec;
- }
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- return 0;
+ cmd->version = bfd_get_32 (abfd, raw.version);
+ cmd->sdk = bfd_get_32 (abfd, raw.sdk);
+ return TRUE;
}
-static int
-bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
+static bfd_boolean
+bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
- unsigned char buf[72];
+ bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
+ struct mach_o_encryption_info_command_external raw;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 72, abfd) != 72)
- return -1;
+ 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;
+}
+
+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;
- 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);
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- return 0;
+ 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;
}
-static int
-bfd_mach_o_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+static bfd_boolean
+bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_symtab_command *seg = &command->command.symtab;
- unsigned char buf[16];
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SYMTAB.stabs";
-
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+ bfd_mach_o_main_command *cmd = &command->command.main;
+ struct mach_o_entry_point_command_external raw;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 16, abfd) != 16)
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- 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;
+ cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
+ cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
+ return TRUE;
+}
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
+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;
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = seg->nsyms * 12;
- bfdsec->filepos = seg->symoff;
- bfdsec->alignment_power = 0;
+ 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;
+}
- seg->stabs_segment = bfdsec;
+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;
- prefix = "LC_SYMTAB.stabstr";
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
- return -1;
+ 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;
+}
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = seg->strsize;
- bfdsec->filepos = seg->stroff;
- bfdsec->alignment_power = 0;
+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;
- seg->stabstr_segment = bfdsec;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- return 0;
+ 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 int
-bfd_mach_o_scan_read_segment (bfd *abfd, bfd_mach_o_load_command *command)
+static bfd_boolean
+bfd_mach_o_read_segment (bfd *abfd,
+ bfd_mach_o_load_command *command,
+ unsigned int wide)
{
- 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;
- flagword flags;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+ if (wide)
+ {
+ struct mach_o_segment_command_64_external raw;
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 48, abfd) != 48)
- return -1;
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
- 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 = bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return -1;
- sprintf (sname, "%s.%s", prefix, seg->segname);
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
- if (bfdsec == NULL)
- return -1;
+ 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;
- bfdsec->vma = seg->vmaddr;
- bfdsec->lma = seg->vmaddr;
- bfdsec->size = seg->filesize;
- bfdsec->filepos = seg->fileoff;
- bfdsec->alignment_power = 0x0;
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
- seg->segment = bfdsec;
+ 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;
- if (seg->nsects != 0)
+ for (i = 0; i < seg->nsects; i++)
{
- seg->sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
- if (seg->sections == NULL)
- return -1;
+ asection *sec;
- for (i = 0; i < seg->nsects; i++)
- {
- bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
+ sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
+ if (sec == NULL)
+ return FALSE;
- if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i],
- segoff) != 0)
- return -1;
- }
+ 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 (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);
+}
+
+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;
- 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);
+ 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);
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 (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;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
- seg = &mdata->commands[i].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;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ bfd_mach_o_section *sec;
- seg = &mdata->commands[i].command.segment;
BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
- for (j = 0; j < seg->nsects; j++)
- mdata->sections[csect++] = &seg->sections[j];
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ mdata->sections[csect++] = sec;
}
}
}
-int
+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 (text_sect)
+ {
+ abfd->start_address = main_cmd->entryoff
+ + (text_sect->addr - text_sect->offset);
+ return TRUE;
+ }
+ }
- if (cmd == NULL)
- return 0;
+ /* An object file has no start address, so do not fail if not found. */
+ if (thr == NULL)
+ return TRUE;
- for (i = 0; i < cmd->nflavours; i++)
+ /* 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))
+ && (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))
+ && (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;
}
-int
+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);
+}
+
+static bfd_boolean
bfd_mach_o_scan (bfd *abfd,
bfd_mach_o_header *header,
bfd_mach_o_data_struct *mdata)
unsigned int i;
enum bfd_architecture cputype;
unsigned long cpusubtype;
+ unsigned int hdrsize;
+
+ 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)
{
- 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);
if (header->ncmds != 0)
{
- mdata->commands = 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_read_command (abfd, cur))
+ return FALSE;
}
}
- if (bfd_mach_o_scan_start_address (abfd) < 0)
- return -1;
-
+ /* Sections should be flatten before scanning start address. */
bfd_mach_o_flatten_sections (abfd);
- return 0;
+ if (!bfd_mach_o_scan_start_address (abfd))
+ return FALSE;
+
+ return TRUE;
}
bfd_boolean
-bfd_mach_o_mkobject (bfd *abfd)
+bfd_mach_o_mkobject_init (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = NULL;
- mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
+ mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
if (mdata == NULL)
return FALSE;
abfd->tdata.mach_o_data = mdata;
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;
}
const bfd_target *
-bfd_mach_o_object_p (bfd *abfd)
+bfd_mach_o_header_p (bfd *abfd,
+ file_ptr hdr_off,
+ bfd_mach_o_filetype filetype,
+ bfd_mach_o_cpu_type cputype)
{
- struct bfd_preserve preserve;
bfd_mach_o_header header;
+ bfd_mach_o_data_struct *mdata;
- preserve.marker = NULL;
- if (bfd_mach_o_read_header (abfd, &header) != 0)
+ if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
goto wrong;
if (! (header.byteorder == BFD_ENDIAN_BIG
|| header.byteorder == BFD_ENDIAN_LITTLE))
{
- fprintf (stderr, "unknown header byte-order value 0x%lx\n",
- (long) header.byteorder);
+ _bfd_error_handler (_("unknown header byte-order value %#x"),
+ header.byteorder);
goto wrong;
}
&& abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
goto wrong;
- preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
- if (preserve.marker == NULL
- || !bfd_preserve_save (abfd, &preserve))
+ /* Check cputype and filetype.
+ In case of wildcard, do not accept magics that are handled by existing
+ targets. */
+ if (cputype)
+ {
+ if (header.cputype != cputype)
+ goto wrong;
+ }
+ else
+ {
+#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
+ }
+
+ if (filetype)
+ {
+ if (header.filetype != filetype)
+ 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,
- (bfd_mach_o_data_struct *) preserve.marker) != 0)
+ if (!bfd_mach_o_scan (abfd, &header, mdata))
goto wrong;
- bfd_preserve_finish (abfd, &preserve);
return abfd->xvec;
wrong:
bfd_set_error (bfd_error_wrong_format);
fail:
- if (preserve.marker != NULL)
- bfd_preserve_restore (abfd, &preserve);
return NULL;
}
-const bfd_target *
-bfd_mach_o_core_p (bfd *abfd)
+static const bfd_target *
+bfd_mach_o_gen_object_p (bfd *abfd)
{
- struct bfd_preserve preserve;
- bfd_mach_o_header header;
-
- preserve.marker = NULL;
- if (bfd_mach_o_read_header (abfd, &header) != 0)
- goto wrong;
-
- if (! (header.byteorder == BFD_ENDIAN_BIG
- || header.byteorder == BFD_ENDIAN_LITTLE))
- {
- fprintf (stderr, "unknown header byte-order value 0x%lx\n",
- (long) header.byteorder);
- abort ();
- }
-
- if (! ((header.byteorder == BFD_ENDIAN_BIG
- && abfd->xvec->byteorder == BFD_ENDIAN_BIG
- && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
- || (header.byteorder == BFD_ENDIAN_LITTLE
- && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
- && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
- goto wrong;
+ return bfd_mach_o_header_p (abfd, 0, 0, 0);
+}
- if (header.filetype != BFD_MACH_O_MH_CORE)
- goto wrong;
+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);
+}
- preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
- if (preserve.marker == NULL
- || !bfd_preserve_save (abfd, &preserve))
- goto fail;
+/* Return the base address of ABFD, ie the address at which the image is
+ mapped. The possible initial pagezero is ignored. */
- if (bfd_mach_o_scan (abfd, &header,
- (bfd_mach_o_data_struct *) preserve.marker) != 0)
- goto wrong;
+bfd_vma
+bfd_mach_o_get_base_address (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata;
+ bfd_mach_o_load_command *cmd;
- bfd_preserve_finish (abfd, &preserve);
- return abfd->xvec;
+ /* Check for Mach-O. */
+ if (!bfd_mach_o_valid (abfd))
+ return 0;
+ mdata = bfd_mach_o_get_data (abfd);
- wrong:
- bfd_set_error (bfd_error_wrong_format);
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ {
+ 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;
- fail:
- if (preserve.marker != NULL)
- bfd_preserve_restore (abfd, &preserve);
- return NULL;
+ if (segcmd->initprot != 0)
+ return segcmd->vmaddr;
+ }
+ }
+ 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 (bfd *abfd)
+bfd_mach_o_fat_archive_p (bfd *abfd)
{
mach_o_fat_data_struct *adata = NULL;
- unsigned char buf[20];
+ struct mach_o_fat_header_external hdr;
unsigned long i;
- bfd_seek (abfd, 0, SEEK_SET);
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
goto error;
adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
if (adata == NULL)
goto error;
- adata->magic = bfd_getb32 (buf);
- adata->nfat_arch = bfd_getb32 (buf + 4);
+ 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_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
+ adata->archentries =
+ bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
if (adata->archentries == NULL)
goto error;
for (i = 0; i < adata->nfat_arch; i++)
{
- bfd_seek (abfd, 8 + 20 * i, SEEK_SET);
-
- if (bfd_bread ((PTR) buf, 20, abfd) != 20)
+ struct mach_o_fat_arch_external arch;
+ if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
goto error;
- adata->archentries[i].cputype = bfd_getb32 (buf);
- adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
- adata->archentries[i].offset = bfd_getb32 (buf + 8);
- adata->archentries[i].size = bfd_getb32 (buf + 12);
- adata->archentries[i].align = bfd_getb32 (buf + 16);
- adata->archentries[i].abfd = NULL;
+ 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:
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 (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_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;
}
bfd_set_error (bfd_error_bad_value);
return NULL;
}
- i++; /* Get next entry. */
- }
+
+ /* Get next entry. */
+ i++;
+ }
if (i >= adata->nfat_arch)
{
}
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++;
- }
+ /* The architecture is found. */
+ res = _bfd_new_bfd_contained_in (abfd);
+ if (res == NULL)
+ return NULL;
- for (j = 0; j < seg->nsects; j++)
+ if (bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e)
+ && bfd_check_format (res, format))
{
- struct bfd_mach_o_section *sect = &seg->sections[j];
-
- if (sect->bfdsection == section)
- {
- if (num == 0)
- nsect = sect;
- num++;
- }
+ BFD_ASSERT (bfd_get_arch_info (res) == arch);
+ return res;
}
+ bfd_close (res);
+ return NULL;
}
- *mcommand = ncmd;
- *msection = nsect;
- return num;
+ return NULL;
+}
+
+static bfd_boolean
+bfd_mach_o_fat_close_and_cleanup (bfd *abfd)
+{
+ _bfd_unlink_from_archive_parent (abfd);
+ return TRUE;
}
int
bfd_mach_o_load_command_type type,
bfd_mach_o_load_command **mcommand)
{
- struct mach_o_data_struct *md = NULL;
- bfd_mach_o_load_command *ncmd = NULL;
- unsigned int i, num;
+ struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct bfd_mach_o_load_command *cmd;
+ unsigned int num;
- md = abfd->tdata.mach_o_data;
-
- 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;
}
{
case BFD_MACH_O_CPU_TYPE_MC680x0:
return 0x04000000;
- case BFD_MACH_O_CPU_TYPE_MC88000:
- return 0xffffe000;
case BFD_MACH_O_CPU_TYPE_POWERPC:
return 0xc0000000;
case BFD_MACH_O_CPU_TYPE_I386:
return 0xc0000000;
case BFD_MACH_O_CPU_TYPE_SPARC:
return 0xf0000000;
- case BFD_MACH_O_CPU_TYPE_I860:
- return 0;
case BFD_MACH_O_CPU_TYPE_HPPA:
return 0xc0000000 - 0x04000000;
default:
}
}
+/* 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 (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)
{
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)
{
*rlen = top - bottom;
memcpy (*rbuf, buf + size - *rlen, *rlen);
+ free (buf);
return 0;
}
}
size *= 2;
}
+
+ free (buf);
}
}
{
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 0;
}
-#define TARGET_NAME mach_o_be_vec
-#define TARGET_STRING "mach-o-be"
-#define TARGET_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 0
+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);
+ 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)
+{
+ 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);
+}
+
+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
+
+/* 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_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 1
+#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