diff options
Diffstat (limited to 'binutils-2.24/bfd/mach-o.c')
| -rw-r--r-- | binutils-2.24/bfd/mach-o.c | 5028 |
1 files changed, 0 insertions, 5028 deletions
diff --git a/binutils-2.24/bfd/mach-o.c b/binutils-2.24/bfd/mach-o.c deleted file mode 100644 index 32e48ac3..00000000 --- a/binutils-2.24/bfd/mach-o.c +++ /dev/null @@ -1,5028 +0,0 @@ -/* Mach-O support for BFD. - Copyright 1999-2013 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 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -#include "sysdep.h" -#include "mach-o.h" -#include "bfd.h" -#include "libbfd.h" -#include "libiberty.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> - -#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) -1 << (algn))) - -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 FALSE; - - if (abfd->xvec->flavour != bfd_target_mach_o_flavour) - return FALSE; - - if (bfd_mach_o_get_data (abfd) == NULL) - return FALSE; - return TRUE; -} - -static INLINE bfd_boolean -mach_o_wide_p (bfd_mach_o_header *header) -{ - switch (header->version) - { - case 1: - return FALSE; - case 2: - return TRUE; - default: - BFD_FAIL (); - return FALSE; - } -} - -static INLINE bfd_boolean -bfd_mach_o_wide_p (bfd *abfd) -{ - return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header); -} - -/* Tables to translate well known Mach-O segment/section names to bfd - names. Use of canonical names (such as .text or .debug_frame) is required - by gdb. */ - -/* __TEXT Segment. */ -static const mach_o_section_name_xlat text_section_names_xlat[] = - { - { ".text", "__text", - SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0}, - { ".const", "__const", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".static_const", "__static_const", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".cstring", "__cstring", - SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS, - BFD_MACH_O_S_CSTRING_LITERALS, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".literal4", "__literal4", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS, - BFD_MACH_O_S_ATTR_NONE, 2}, - { ".literal8", "__literal8", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS, - BFD_MACH_O_S_ATTR_NONE, 3}, - { ".literal16", "__literal16", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS, - BFD_MACH_O_S_ATTR_NONE, 4}, - { ".constructor", "__constructor", - SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".destructor", "__destructor", - SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".eh_frame", "__eh_frame", - SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED, - BFD_MACH_O_S_ATTR_LIVE_SUPPORT - | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS - | BFD_MACH_O_S_ATTR_NO_TOC, 2}, - { NULL, NULL, 0, 0, 0, 0} - }; - -/* __DATA Segment. */ -static const mach_o_section_name_xlat data_section_names_xlat[] = - { - { ".data", "__data", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".bss", "__bss", - SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".const_data", "__const", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".static_data", "__static_data", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".mod_init_func", "__mod_init_func", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS, - BFD_MACH_O_S_ATTR_NONE, 2}, - { ".mod_term_func", "__mod_term_func", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS, - BFD_MACH_O_S_ATTR_NONE, 2}, - { ".dyld", "__dyld", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 0}, - { ".cfstring", "__cfstring", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NONE, 2}, - { NULL, NULL, 0, 0, 0, 0} - }; - -/* __DWARF Segment. */ -static const mach_o_section_name_xlat dwarf_section_names_xlat[] = - { - { ".debug_frame", "__debug_frame", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_info", "__debug_info", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_abbrev", "__debug_abbrev", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_aranges", "__debug_aranges", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_macinfo", "__debug_macinfo", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_line", "__debug_line", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_loc", "__debug_loc", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_pubnames", "__debug_pubnames", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_pubtypes", "__debug_pubtypes", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_str", "__debug_str", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_ranges", "__debug_ranges", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_macro", "__debug_macro", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { ".debug_gdb_scripts", "__debug_gdb_scri", - SEC_DEBUGGING, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_DEBUG, 0}, - { NULL, NULL, 0, 0, 0, 0} - }; - -/* __OBJC Segment. */ -static const mach_o_section_name_xlat objc_section_names_xlat[] = - { - { ".objc_class", "__class", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_meta_class", "__meta_class", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_cat_cls_meth", "__cat_cls_meth", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_cat_inst_meth", "__cat_inst_meth", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_protocol", "__protocol", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_string_object", "__string_object", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_cls_meth", "__cls_meth", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_inst_meth", "__inst_meth", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_cls_refs", "__cls_refs", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_message_refs", "__message_refs", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_symbols", "__symbols", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_category", "__category", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_class_vars", "__class_vars", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_instance_vars", "__instance_vars", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_module_info", "__module_info", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_selector_strs", "__selector_strs", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_image_info", "__image_info", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc_selector_fixup", "__sel_fixup", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - /* Objc V1 */ - { ".objc1_class_ext", "__class_ext", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc1_property_list", "__property", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { ".objc1_protocol_ext", "__protocol_ext", - SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR, - BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0}, - { NULL, NULL, 0, 0, 0, 0} - }; - -static const mach_o_segment_name_xlat segsec_names_xlat[] = - { - { "__TEXT", text_section_names_xlat }, - { "__DATA", data_section_names_xlat }, - { "__DWARF", dwarf_section_names_xlat }, - { "__OBJC", objc_section_names_xlat }, - { NULL, NULL } - }; - -static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF"; - -/* For both cases bfd-name => mach-o name and vice versa, the specific target - is checked before the generic. This allows a target (e.g. ppc for cstring) - to override the generic definition with a more specific one. */ - -/* Fetch the translation from a Mach-O section designation (segment, section) - as a bfd short name, if one exists. Otherwise return NULL. - - Allow the segment and section names to be unterminated 16 byte arrays. */ - -const mach_o_section_name_xlat * -bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname, - const char *sectname) -{ - const struct mach_o_segment_name_xlat *seg; - const mach_o_section_name_xlat *sec; - bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); - - /* First try any target-specific translations defined... */ - if (bed->segsec_names_xlat) - for (seg = bed->segsec_names_xlat; seg->segname; seg++) - if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0) - for (sec = seg->sections; sec->mach_o_name; sec++) - if (strncmp (sec->mach_o_name, sectname, - BFD_MACH_O_SECTNAME_SIZE) == 0) - return sec; - - /* ... and then the Mach-O generic ones. */ - for (seg = segsec_names_xlat; seg->segname; seg++) - if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0) - for (sec = seg->sections; sec->mach_o_name; sec++) - if (strncmp (sec->mach_o_name, sectname, - BFD_MACH_O_SECTNAME_SIZE) == 0) - return sec; - - return NULL; -} - -/* If the bfd_name for this section is a 'canonical' form for which we - know the Mach-O data, return the segment name and the data for the - Mach-O equivalent. Otherwise return NULL. */ - -const mach_o_section_name_xlat * -bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name, - const char **segname) -{ - const struct mach_o_segment_name_xlat *seg; - const mach_o_section_name_xlat *sec; - bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); - *segname = NULL; - - if (bfd_name[0] != '.') - return NULL; - - /* First try any target-specific translations defined... */ - if (bed->segsec_names_xlat) - for (seg = bed->segsec_names_xlat; seg->segname; seg++) - for (sec = seg->sections; sec->bfd_name; sec++) - if (strcmp (bfd_name, sec->bfd_name) == 0) - { - *segname = seg->segname; - return sec; - } - - /* ... and then the Mach-O generic ones. */ - for (seg = segsec_names_xlat; seg->segname; seg++) - for (sec = seg->sections; sec->bfd_name; sec++) - if (strcmp (bfd_name, sec->bfd_name) == 0) - { - *segname = seg->segname; - return sec; - } - - return NULL; -} - -/* Convert Mach-O section name to BFD. - - Try to use standard/canonical names, for which we have tables including - default flag settings - which are returned. Otherwise forge a new name - in the form "<segmentname>.<sectionname>" this will be prefixed with - LC_SEGMENT. if the segment name does not begin with an underscore. - - SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL- - terminated if the name length is exactly 16 bytes - but must be if the name - length is less than 16 characters). */ - -void -bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname, - const char *secname, const char **name, - flagword *flags) -{ - const mach_o_section_name_xlat *xlat; - char *res; - unsigned int len; - const char *pfx = ""; - - *name = NULL; - *flags = SEC_NO_FLAGS; - - /* First search for a canonical name... - xlat will be non-null if there is an entry for segname, secname. */ - xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname); - if (xlat) - { - len = strlen (xlat->bfd_name); - res = bfd_alloc (abfd, len+1); - if (res == NULL) - return; - memcpy (res, xlat->bfd_name, len+1); - *name = res; - *flags = xlat->bfd_flags; - return; - } - - /* ... else we make up a bfd name from the segment concatenated with the - section. */ - - len = 16 + 1 + 16 + 1; - - /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start - with an underscore. */ - if (segname[0] != '_') - { - static const char seg_pfx[] = "LC_SEGMENT."; - - pfx = seg_pfx; - len += sizeof (seg_pfx) - 1; - } - - res = bfd_alloc (abfd, len); - if (res == NULL) - return; - snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname); - *name = res; -} - -/* Convert a bfd section name to a Mach-O segment + section name. - - If the name is a canonical one for which we have a Darwin match - return the translation table - which contains defaults for flags, - type, attribute and default alignment data. - - Otherwise, expand the bfd_name (assumed to be in the form - "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */ - -static const mach_o_section_name_xlat * -bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED, - asection *sect, - bfd_mach_o_section *section) -{ - const mach_o_section_name_xlat *xlat; - const char *name = bfd_get_section_name (abfd, sect); - const char *segname; - const char *dot; - unsigned int len; - unsigned int seglen; - unsigned int seclen; - - memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1); - memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1); - - /* See if is a canonical name ... */ - xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname); - if (xlat) - { - strcpy (section->segname, segname); - strcpy (section->sectname, xlat->mach_o_name); - return xlat; - } - - /* .. else we convert our constructed one back to Mach-O. - Strip LC_SEGMENT. prefix, if present. */ - if (strncmp (name, "LC_SEGMENT.", 11) == 0) - name += 11; - - /* Find a dot. */ - dot = strchr (name, '.'); - len = strlen (name); - - /* Try to split name into segment and section names. */ - if (dot && dot != name) - { - seglen = dot - name; - seclen = len - (dot + 1 - name); - - if (seglen < 16 && seclen < 16) - { - memcpy (section->segname, name, seglen); - section->segname[seglen] = 0; - memcpy (section->sectname, dot + 1, seclen); - section->sectname[seclen] = 0; - return NULL; - } - } - - /* The segment and section names are both missing - don't make them - into dots. */ - if (dot && dot == name) - return NULL; - - /* Just duplicate the name into both segment and section. */ - if (len > 16) - len = 16; - memcpy (section->segname, name, len); - section->segname[len] = 0; - memcpy (section->sectname, name, len); - section->sectname[len] = 0; - return NULL; -} - -/* Return the size of an entry for section SEC. - Must be called only for symbol pointer section and symbol stubs - sections. */ - -unsigned int -bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec) -{ - switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) - { - case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: - case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: - return bfd_mach_o_wide_p (abfd) ? 8 : 4; - case BFD_MACH_O_S_SYMBOL_STUBS: - return sec->reserved2; - default: - BFD_FAIL (); - return 0; - } -} - -/* Return the number of indirect symbols for a section. - Must be called only for symbol pointer section and symbol stubs - sections. */ - -unsigned int -bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec) -{ - unsigned int elsz; - - elsz = bfd_mach_o_section_get_entry_size (abfd, sec); - if (elsz == 0) - return 0; - else - return sec->size / elsz; -} - - -/* Copy any private info we understand from the input symbol - to the output symbol. */ - -bfd_boolean -bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, - asymbol *isymbol, - bfd *obfd ATTRIBUTE_UNUSED, - asymbol *osymbol) -{ - bfd_mach_o_asymbol *os, *is; - os = (bfd_mach_o_asymbol *)osymbol; - is = (bfd_mach_o_asymbol *)isymbol; - os->n_type = is->n_type; - os->n_sect = is->n_sect; - os->n_desc = is->n_desc; - os->symbol.udata.i = is->symbol.udata.i; - return TRUE; -} - -/* Copy any private info we understand from the input section - to the output section. */ - -bfd_boolean -bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, - asection *isection, - bfd *obfd ATTRIBUTE_UNUSED, - asection *osection) -{ - if (osection->used_by_bfd == NULL) - osection->used_by_bfd = isection->used_by_bfd; - else - if (isection->used_by_bfd != NULL) - memcpy (osection->used_by_bfd, isection->used_by_bfd, - sizeof (bfd_mach_o_section)); - - if (osection->used_by_bfd != NULL) - ((bfd_mach_o_section *)osection->used_by_bfd)->bfdsection = osection; - - return TRUE; -} - -/* Copy any private info we understand from the input bfd - to the output bfd. */ - -bfd_boolean -bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour - || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour) - return TRUE; - - BFD_ASSERT (bfd_mach_o_valid (ibfd)); - BFD_ASSERT (bfd_mach_o_valid (obfd)); - - /* FIXME: copy commands. */ - - return TRUE; -} - -/* This allows us to set up to 32 bits of flags (unless we invent some - fiendish scheme to subdivide). For now, we'll just set the file flags - without error checking - just overwrite. */ - -bfd_boolean -bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - - if (!mdata) - return FALSE; - - mdata->header.flags = flags; - return TRUE; -} - -/* Count the total number of symbols. */ - -static long -bfd_mach_o_count_symbols (bfd *abfd) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - - if (mdata->symtab == NULL) - return 0; - return mdata->symtab->nsyms; -} - -long -bfd_mach_o_get_symtab_upper_bound (bfd *abfd) -{ - long nsyms = bfd_mach_o_count_symbols (abfd); - - return ((nsyms + 1) * sizeof (asymbol *)); -} - -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 (nsyms < 0) - return nsyms; - - if (nsyms == 0) - { - /* Do not try to read symbols if there are none. */ - alocation[0] = NULL; - return 0; - } - - if (!bfd_mach_o_read_symtab_symbols (abfd)) - { - (*_bfd_error_handler) - (_("bfd_mach_o_canonicalize_symtab: unable to load symbols")); - return 0; - } - - BFD_ASSERT (sym->symbols != NULL); - - for (j = 0; j < sym->nsyms; j++) - alocation[j] = &sym->symbols[j].symbol; - - alocation[j] = NULL; - - return nsyms; -} - -/* Create synthetic symbols for indirect symbols. */ - -long -bfd_mach_o_get_synthetic_symtab (bfd *abfd, - long symcount ATTRIBUTE_UNUSED, - asymbol **syms ATTRIBUTE_UNUSED, - long dynsymcount ATTRIBUTE_UNUSED, - asymbol **dynsyms ATTRIBUTE_UNUSED, - asymbol **ret) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab; - bfd_mach_o_symtab_command *symtab = mdata->symtab; - asymbol *s; - unsigned long count, i, j, n; - size_t size; - char *names; - char *nul_name; - - *ret = NULL; - - /* Stop now if no symbols or no indirect symbols. */ - if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL) - return 0; - - if (dysymtab->nindirectsyms == 0) - return 0; - - /* We need to allocate a bfd symbol for every indirect symbol and to - allocate the memory for its name. */ - count = dysymtab->nindirectsyms; - size = count * sizeof (asymbol) + 1; - - for (j = 0; j < count; j++) - { - unsigned int isym = dysymtab->indirect_syms[j]; - - /* Some indirect symbols are anonymous. */ - if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name) - size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub"); - } - - s = *ret = (asymbol *) bfd_malloc (size); - if (s == NULL) - return -1; - names = (char *) (s + count); - nul_name = names; - *names++ = 0; - - n = 0; - for (i = 0; i < mdata->nsects; i++) - { - bfd_mach_o_section *sec = mdata->sections[i]; - unsigned int first, last; - bfd_vma addr; - bfd_vma entry_size; - - switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) - { - case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: - case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: - case BFD_MACH_O_S_SYMBOL_STUBS: - /* Only these sections have indirect symbols. */ - first = sec->reserved1; - last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec); - addr = sec->addr; - entry_size = bfd_mach_o_section_get_entry_size (abfd, sec); - for (j = first; j < last; j++) - { - unsigned int isym = dysymtab->indirect_syms[j]; - - s->flags = BSF_GLOBAL | BSF_SYNTHETIC; - s->section = sec->bfdsection; - s->value = addr - sec->addr; - s->udata.p = NULL; - - if (isym < symtab->nsyms - && symtab->symbols[isym].symbol.name) - { - const char *sym = symtab->symbols[isym].symbol.name; - size_t len; - - s->name = names; - len = strlen (sym); - memcpy (names, sym, len); - names += len; - memcpy (names, "$stub", sizeof ("$stub")); - names += sizeof ("$stub"); - } - else - s->name = nul_name; - - addr += entry_size; - s++; - n++; - } - break; - default: - break; - } - } - - return n; -} - -void -bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, - asymbol *symbol, - symbol_info *ret) -{ - bfd_symbol_info (symbol, ret); -} - -void -bfd_mach_o_print_symbol (bfd *abfd, - void * afile, - asymbol *symbol, - bfd_print_symbol_type how) -{ - FILE *file = (FILE *) afile; - const char *name; - bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol; - - switch (how) - { - case bfd_print_symbol_name: - fprintf (file, "%s", symbol->name); - break; - default: - bfd_print_symbol_vandf (abfd, (void *) file, symbol); - if (asym->n_type & BFD_MACH_O_N_STAB) - name = bfd_get_stab_name (asym->n_type); - else - switch (asym->n_type & BFD_MACH_O_N_TYPE) - { - case BFD_MACH_O_N_UNDF: - if (symbol->value == 0) - name = "UND"; - else - name = "COM"; - break; - case BFD_MACH_O_N_ABS: - name = "ABS"; - break; - case BFD_MACH_O_N_INDR: - name = "INDR"; - break; - case BFD_MACH_O_N_PBUD: - name = "PBUD"; - break; - case BFD_MACH_O_N_SECT: - name = "SECT"; - break; - default: - name = "???"; - break; - } - if (name == NULL) - name = ""; - fprintf (file, " %02x %-6s %02x %04x", - asym->n_type, name, asym->n_sect, asym->n_desc); - if ((asym->n_type & BFD_MACH_O_N_STAB) == 0 - && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT) - fprintf (file, " [%s]", symbol->section->name); - fprintf (file, " %s", symbol->name); - } -} - -static void -bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype, - bfd_mach_o_cpu_subtype msubtype, - enum bfd_architecture *type, - unsigned long *subtype) -{ - *subtype = bfd_arch_unknown; - - switch (mtype) - { - case BFD_MACH_O_CPU_TYPE_VAX: - *type = bfd_arch_vax; - break; - case BFD_MACH_O_CPU_TYPE_MC680x0: - *type = bfd_arch_m68k; - break; - case BFD_MACH_O_CPU_TYPE_I386: - *type = bfd_arch_i386; - *subtype = bfd_mach_i386_i386; - break; - case BFD_MACH_O_CPU_TYPE_X86_64: - *type = bfd_arch_i386; - *subtype = bfd_mach_x86_64; - break; - case BFD_MACH_O_CPU_TYPE_MIPS: - *type = bfd_arch_mips; - break; - case BFD_MACH_O_CPU_TYPE_MC98000: - *type = bfd_arch_m98k; - break; - case BFD_MACH_O_CPU_TYPE_HPPA: - *type = bfd_arch_hppa; - break; - case BFD_MACH_O_CPU_TYPE_ARM: - *type = bfd_arch_arm; - switch (msubtype) - { - case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T: - *subtype = bfd_mach_arm_4T; - break; - case BFD_MACH_O_CPU_SUBTYPE_ARM_V6: - *subtype = bfd_mach_arm_4T; /* Best fit ? */ - break; - case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ: - *subtype = bfd_mach_arm_5TE; - break; - case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE: - *subtype = bfd_mach_arm_XScale; - break; - case BFD_MACH_O_CPU_SUBTYPE_ARM_V7: - *subtype = bfd_mach_arm_5TE; /* Best fit ? */ - break; - case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL: - default: - break; - } - break; - case BFD_MACH_O_CPU_TYPE_MC88000: - *type = bfd_arch_m88k; - break; - case BFD_MACH_O_CPU_TYPE_SPARC: - *type = bfd_arch_sparc; - *subtype = bfd_mach_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; - *subtype = bfd_mach_ppc; - break; - case BFD_MACH_O_CPU_TYPE_POWERPC_64: - *type = bfd_arch_powerpc; - *subtype = bfd_mach_ppc64; - break; - default: - *type = bfd_arch_unknown; - break; - } -} - -static bfd_boolean -bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header) -{ - struct mach_o_header_external raw; - unsigned int size; - - size = mach_o_wide_p (header) ? - BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; - - bfd_h_put_32 (abfd, header->magic, raw.magic); - bfd_h_put_32 (abfd, header->cputype, raw.cputype); - bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype); - bfd_h_put_32 (abfd, header->filetype, raw.filetype); - bfd_h_put_32 (abfd, header->ncmds, raw.ncmds); - bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds); - bfd_h_put_32 (abfd, header->flags, raw.flags); - - if (mach_o_wide_p (header)) - bfd_h_put_32 (abfd, header->reserved, raw.reserved); - - if (bfd_seek (abfd, 0, SEEK_SET) != 0 - || bfd_bwrite (&raw, size, abfd) != size) - return FALSE; - - return TRUE; -} - -static int -bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_thread_command *cmd = &command->command.thread; - unsigned int i; - struct mach_o_thread_command_external raw; - unsigned int offset; - - BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) - || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); - - offset = 8; - for (i = 0; i < cmd->nflavours; i++) - { - BFD_ASSERT ((cmd->flavours[i].size % 4) == 0); - BFD_ASSERT (cmd->flavours[i].offset == - (command->offset + offset + BFD_MACH_O_LC_SIZE)); - - bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour); - bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count); - - if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 - || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - offset += cmd->flavours[i].size + sizeof (raw); - } - - return 0; -} - -long -bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, - asection *asect) -{ - 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. */ - -static 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; - } -} - -static int -bfd_mach_o_canonicalize_one_reloc (bfd *abfd, - struct mach_o_reloc_info_external *raw, - arelent *res, asymbol **syms) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); - bfd_mach_o_reloc_info reloc; - bfd_vma addr; - asymbol **sym; - - 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 - { - unsigned int num; - - /* Non-scattered relocation. */ - reloc.r_scattered = 0; - - /* 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); - num = reloc.r_value; - - if (reloc.r_extern) - { - /* An external symbol number. */ - sym = syms + num; - } - else if (num == 0x00ffffff) - { - /* 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 - { - /* A section number. */ - BFD_ASSERT (num != 0); - BFD_ASSERT (num <= mdata->nsects); - - 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; - - /* The 'address' is just r_address. - ??? maybe this should be masked with 0xffffff for safety. */ - res->address = addr; - reloc.r_address = addr; - } - - /* 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. */ - - if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc)) - return -1; - return 0; -} - -static int -bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos, - unsigned long count, - arelent *res, asymbol **syms) -{ - unsigned long i; - struct mach_o_reloc_info_external *native_relocs; - bfd_size_type native_size; - - /* Allocate and read relocs. */ - native_size = count * BFD_MACH_O_RELENT_SIZE; - 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 (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i], - &res[i], syms) < 0) - goto err; - } - free (native_relocs); - return i; - err: - free (native_relocs); - 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_swap_reloc_in == NULL) - return 0; - - if (asect->relocation == NULL) - { - 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_swap_reloc_in == NULL) - return 0; - - if (mdata->dyn_reloc_cache == NULL) - { - 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 int -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 -1; - - return 0; -} - -static int -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 -1; - - return 0; -} - -static int -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 -1; - - 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 -1; - - for (sec = seg->sect_head; sec != NULL; sec = sec->next) - if (bfd_mach_o_write_section_32 (abfd, sec)) - return -1; - - return 0; -} - -static int -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 -1; - - 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 -1; - - for (sec = seg->sect_head; sec != NULL; sec = sec->next) - if (bfd_mach_o_write_section_64 (abfd, sec)) - return -1; - - return 0; -} - -static bfd_boolean -bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - bfd_mach_o_symtab_command *sym = &command->command.symtab; - unsigned long i; - unsigned int wide = bfd_mach_o_wide_p (abfd); - unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE; - struct bfd_strtab_hash *strtab; - asymbol **symbols = bfd_get_outsymbols (abfd); - - BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); - - /* Write the symbols first. */ - mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2); - sym->symoff = mdata->filelen; - if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0) - return FALSE; - - sym->nsyms = bfd_get_symcount (abfd); - mdata->filelen += sym->nsyms * symlen; - - 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_stringtab_emit (abfd, strtab) != TRUE) - goto err; - _bfd_stringtab_free (strtab); - - /* The command. */ - { - struct mach_o_symtab_command_external raw; - - 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; - - err: - _bfd_stringtab_free (strtab); - return FALSE; -} - -/* 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; - - if (s->symbol.flags & BSF_GLOBAL) - 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->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; - - mdata->nsects = nsect; - mdata->sections = bfd_alloc (abfd, - mdata->nsects * sizeof (bfd_mach_o_section *)); - if (mdata->sections == NULL) - return FALSE; - - /* We need to check that this can be done... */ - if (nsect > 255) - (*_bfd_error_handler) (_("mach-o: there are too many sections (%d)" - " maximum is 255,\n"), nsect); - - /* 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_get_section_alignment (abfd, sec); - bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec); - - mdata->sections[target_index] = msect; - - msect->addr = bfd_get_section_vma (abfd, sec); - msect->size = bfd_get_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) -{ - unsigned int i; - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - - /* Make the commands, if not already present. */ - if (mdata->header.ncmds == 0) - if (!bfd_mach_o_build_commands (abfd)) - return FALSE; - - if (!bfd_mach_o_write_header (abfd, &mdata->header)) - return FALSE; - - for (i = 0; i < mdata->header.ncmds; i++) - { - struct mach_o_load_command_external raw; - bfd_mach_o_load_command *cur = &mdata->commands[i]; - unsigned long typeflag; - - typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0); - - bfd_h_put_32 (abfd, typeflag, raw.cmd); - bfd_h_put_32 (abfd, cur->len, raw.cmdsize); - - if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0 - || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8) - return FALSE; - - switch (cur->type) - { - case BFD_MACH_O_LC_SEGMENT: - if (bfd_mach_o_write_segment_32 (abfd, cur) != 0) - return FALSE; - break; - case BFD_MACH_O_LC_SEGMENT_64: - if (bfd_mach_o_write_segment_64 (abfd, cur) != 0) - return FALSE; - break; - case BFD_MACH_O_LC_SYMTAB: - if (!bfd_mach_o_write_symtab (abfd, cur)) - return FALSE; - break; - case BFD_MACH_O_LC_DYSYMTAB: - if (!bfd_mach_o_write_dysymtab (abfd, cur)) - 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_write_thread (abfd, cur) != 0) - return FALSE; - break; - case BFD_MACH_O_LC_LOADFVMLIB: - case BFD_MACH_O_LC_IDFVMLIB: - case BFD_MACH_O_LC_IDENT: - case BFD_MACH_O_LC_FVMFILE: - case BFD_MACH_O_LC_PREPAGE: - case BFD_MACH_O_LC_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: - case BFD_MACH_O_LC_LOAD_DYLINKER: - case BFD_MACH_O_LC_ID_DYLINKER: - case BFD_MACH_O_LC_PREBOUND_DYLIB: - case BFD_MACH_O_LC_ROUTINES: - case BFD_MACH_O_LC_SUB_FRAMEWORK: - break; - default: - (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"), - (unsigned long) cur->type); - return FALSE; - } - } - - return TRUE; -} - -static void -bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg, - asection *sec) -{ - bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd; - 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_get_section_flags (abfd, 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; -} - -/* Count the number of sections in the list for the segment named. - - The special case of NULL or "" for the segment name is valid for - an MH_OBJECT file and means 'all sections available'. - - Requires that the sections table in mdata be filled in. - - Returns the number of sections (0 is valid). - Any number > 255 signals an invalid section count, although we will, - perhaps, allow the file to be written (in line with Darwin tools up - to XCode 4). - - A section count of (unsigned long) -1 signals a definite error. */ - -static unsigned long -bfd_mach_o_count_sections_for_seg (const char *segment, - bfd_mach_o_data_struct *mdata) -{ - unsigned i,j; - if (mdata == NULL || mdata->sections == NULL) - return (unsigned long) -1; - - /* The MH_OBJECT case, all sections are considered; Although nsects is - is an unsigned long, the maximum valid section count is 255 and this - will have been checked already by mangle_sections. */ - if (segment == NULL || segment[0] == '\0') - return mdata->nsects; - - /* Count the number of sections we see in this segment. */ - j = 0; - for (i = 0; i < mdata->nsects; ++i) - { - bfd_mach_o_section *s = mdata->sections[i]; - if (strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) == 0) - j++; - } - return j; -} - -static bfd_boolean -bfd_mach_o_build_seg_command (const char *segment, - bfd_mach_o_data_struct *mdata, - bfd_mach_o_segment_command *seg) -{ - unsigned i; - int is_mho = (segment == NULL || segment[0] == '\0'); - - /* Fill segment command. */ - if (is_mho) - memset (seg->segname, 0, sizeof (seg->segname)); - else - strncpy (seg->segname, segment, sizeof (seg->segname)); - - /* TODO: fix this up for non-MH_OBJECT cases. */ - seg->vmaddr = 0; - seg->vmsize = 0; - - seg->fileoff = mdata->filelen; - seg->filesize = 0; - seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE - | BFD_MACH_O_PROT_EXECUTE; - seg->initprot = seg->maxprot; - seg->flags = 0; - seg->sect_head = NULL; - seg->sect_tail = NULL; - - /* 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; - - /* If we're not making an MH_OBJECT, check whether this section is from - our segment, and skip if not. Otherwise, just add all sections. */ - if (! is_mho - && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0) - continue; - - /* 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, sec); - s->offset = 0; - - /* Zerofill sections have zero file size & offset, - and are not written. */ - 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; - - if (s->size > 0) - { - seg->vmsize = FILE_ALIGN (seg->vmsize, s->align); - seg->vmsize += s->size; - - seg->filesize = FILE_ALIGN (seg->filesize, s->align); - seg->filesize += s->size; - - mdata->filelen = FILE_ALIGN (mdata->filelen, s->align); - 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. */ - for (i = 0; i < mdata->nsects; ++i) - { - bfd_mach_o_section *s = mdata->sections[i]; - - if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL) - continue; - - if (! is_mho - && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0) - continue; - - if (s->size > 0) - { - seg->vmsize = FILE_ALIGN (seg->vmsize, s->align); - seg->vmsize += s->size; - } - } - - /* Now pass through again, for zerofill_GB. */ - for (i = 0; i < mdata->nsects; ++i) - { - bfd_mach_o_section *s = mdata->sections[i]; - - if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_GB_ZEROFILL) - continue; - - if (! is_mho - && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0) - 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; - - if ((ms->nreloc = sec->reloc_count) == 0) - { - 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; -} - -/* 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; -} - -static bfd_boolean -bfd_mach_o_build_dysymtab_command (bfd *abfd, - bfd_mach_o_data_struct *mdata, - bfd_mach_o_load_command *cmd) -{ - bfd_mach_o_dysymtab_command *dsym = &cmd->command.dysymtab; - - /* 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 (dsym->nmodtab != 0 - || dsym->ntoc != 0 - || dsym->nextrefsyms != 0) - { - (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet" - " implemented for dysymtab commands.")); - return FALSE; - } - - dsym->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; - } - dsym->nlocalsym = i; - dsym->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; - } - dsym->nextdefsym = i - dsym->nlocalsym; - dsym->iundefsym = dsym->nextdefsym + dsym->iextdefsym; - dsym->nundefsym = bfd_get_symcount (abfd) - - dsym->nlocalsym - - dsym->nextdefsym; - } - else - { - dsym->nlocalsym = 0; - dsym->iextdefsym = 0; - dsym->nextdefsym = 0; - dsym->iundefsym = 0; - dsym->nundefsym = 0; - } - - dsym->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata); - if (dsym->nindirectsyms > 0) - { - unsigned i; - unsigned n; - - mdata->filelen = FILE_ALIGN (mdata->filelen, 2); - dsym->indirectsymoff = mdata->filelen; - mdata->filelen += dsym->nindirectsyms * 4; - - dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4); - if (dsym->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) - dsym->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)) - dsym->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL - | BFD_MACH_O_INDIRECT_SYM_ABS; - else - dsym->indirect_syms[n] = isyms[j]->symbol.udata.i; - } - } - break; - default: - break; - } - } - } - - return TRUE; -} - -/* 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); - int segcmd_idx = -1; - int symtab_idx = -1; - int dysymtab_idx = -1; - unsigned long base_offset = 0; - - /* Return now if commands are already present. */ - if (mdata->header.ncmds) - return FALSE; - - /* 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; - - /* Very simple command set (only really applicable to MH_OBJECTs): - All the commands are optional - present only when there is suitable data. - (i.e. it is valid to have an empty file) - - a command (segment) to contain all the sections, - command for the symbol table, - a command for the dysymtab. - - ??? maybe we should assert that this is an MH_OBJECT? */ - - if (mdata->nsects > 0) - { - segcmd_idx = 0; - mdata->header.ncmds = 1; - } - - if (bfd_get_symcount (abfd) > 0) - { - mdata->header.ncmds++; - symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */ - } - - /* 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)) - { - mdata->header.ncmds++; - /* If there should be a case where a dysymtab could be emitted without - a symtab (seems improbable), this would need amending. */ - dysymtab_idx = symtab_idx + 1; - } - - if (wide) - base_offset = BFD_MACH_O_HEADER_64_SIZE; - else - base_offset = BFD_MACH_O_HEADER_SIZE; - - /* Well, we must have a header, at least. */ - mdata->filelen = base_offset; - - /* A bit unusual, but no content is valid; - as -n empty.s -o empty.o */ - if (mdata->header.ncmds == 0) - return TRUE; - - mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds - * sizeof (bfd_mach_o_load_command)); - if (mdata->commands == NULL) - return FALSE; - - if (segcmd_idx >= 0) - { - bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx]; - bfd_mach_o_segment_command *seg = &cmd->command.segment; - - /* Count the segctions in the special blank segment used for MH_OBJECT. */ - seg->nsects = bfd_mach_o_count_sections_for_seg (NULL, mdata); - if (seg->nsects == (unsigned long) -1) - return FALSE; - - /* Init segment command. */ - cmd->offset = base_offset; - if (wide) - { - cmd->type = BFD_MACH_O_LC_SEGMENT_64; - cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE - + BFD_MACH_O_SECTION_64_SIZE * seg->nsects; - } - else - { - cmd->type = BFD_MACH_O_LC_SEGMENT; - cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE - + BFD_MACH_O_SECTION_SIZE * seg->nsects; - } - - cmd->type_required = FALSE; - mdata->header.sizeofcmds = cmd->len; - mdata->filelen += cmd->len; - } - - if (symtab_idx >= 0) - { - /* Init symtab command. */ - bfd_mach_o_load_command *cmd = &mdata->commands[symtab_idx]; - - cmd->type = BFD_MACH_O_LC_SYMTAB; - cmd->offset = base_offset; - if (segcmd_idx >= 0) - cmd->offset += mdata->commands[segcmd_idx].len; - - cmd->len = sizeof (struct mach_o_symtab_command_external) - + BFD_MACH_O_LC_SIZE; - cmd->type_required = FALSE; - mdata->header.sizeofcmds += cmd->len; - mdata->filelen += cmd->len; - } - - /* If required, setup symtab command, see comment above about the quality - of this test. */ - if (dysymtab_idx >= 0) - { - bfd_mach_o_load_command *cmd = &mdata->commands[dysymtab_idx]; - - cmd->type = BFD_MACH_O_LC_DYSYMTAB; - if (symtab_idx >= 0) - cmd->offset = mdata->commands[symtab_idx].offset - + mdata->commands[symtab_idx].len; - else if (segcmd_idx >= 0) - cmd->offset = mdata->commands[segcmd_idx].offset - + mdata->commands[segcmd_idx].len; - else - cmd->offset = base_offset; - - cmd->type_required = FALSE; - cmd->len = sizeof (struct mach_o_dysymtab_command_external) - + BFD_MACH_O_LC_SIZE; - - mdata->header.sizeofcmds += cmd->len; - mdata->filelen += cmd->len; - } - - /* 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 (segcmd_idx >= 0 - && ! bfd_mach_o_build_seg_command - (NULL, mdata, &mdata->commands[segcmd_idx].command.segment)) - return FALSE; - - /* If we're doing a dysymtab, cmd points to its load command. */ - if (dysymtab_idx >= 0 - && ! bfd_mach_o_build_dysymtab_command (abfd, mdata, - &mdata->commands[dysymtab_idx])) - return FALSE; - - /* The symtab command is filled in when the symtab is written. */ - 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, 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, 0, 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, 0, 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_get_section_alignment (abfd, 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; - (void) bfd_set_section_alignment (abfd, sec, s->align); - bfd_flags = bfd_get_section_flags (abfd, sec); - if (bfd_flags == SEC_NO_FLAGS) - bfd_set_section_flags (abfd, 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 (bfd *abfd, asection *sec, - unsigned long prot) -{ - flagword flags; - bfd_mach_o_section *section; - - flags = bfd_get_section_flags (abfd, 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 (abfd, 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 int offset, - unsigned long prot) -{ - struct mach_o_section_32_external raw; - asection *sec; - bfd_mach_o_section *section; - - if (bfd_seek (abfd, offset, SEEK_SET) != 0 - || (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); - 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 (abfd, sec, prot); - - return sec; -} - -static asection * -bfd_mach_o_read_section_64 (bfd *abfd, - unsigned int offset, - unsigned long prot) -{ - struct mach_o_section_64_external raw; - asection *sec; - bfd_mach_o_section *section; - - if (bfd_seek (abfd, offset, SEEK_SET) != 0 - || (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); - 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 (abfd, sec, prot); - - return sec; -} - -static asection * -bfd_mach_o_read_section (bfd *abfd, - unsigned int offset, - unsigned long prot, - unsigned int wide) -{ - if (wide) - return bfd_mach_o_read_section_64 (abfd, offset, prot); - else - return bfd_mach_o_read_section_32 (abfd, offset, 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) - (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"), - symwidth, (unsigned long) 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) - { - (*_bfd_error_handler) - (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"), - (unsigned long) stroff, - (unsigned long) 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) (_("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) (_("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 - { - sym->strtab = bfd_alloc (abfd, sym->strsize); - if (sym->strtab == NULL) - return FALSE; - - if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0 - || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize) - { - bfd_set_error (bfd_error_file_truncated); - return FALSE; - } - } - - 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_alloc (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")); - return FALSE; - } - - if (!bfd_mach_o_read_symtab_strtab (abfd)) - return FALSE; - - for (i = 0; i < sym->nsyms; i++) - { - if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i)) - return FALSE; - } - - return TRUE; -} - -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_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; - - BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER) - || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)); - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - nameoff = bfd_h_get_32 (abfd, raw.str); - - cmd->name_offset = command->offset + nameoff; - cmd->name_len = command->len - nameoff; - cmd->name_str = bfd_alloc (abfd, cmd->name_len); - if (cmd->name_str == NULL) - return -1; - if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0 - || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len) - return -1; - return 0; -} - -static int -bfd_mach_o_read_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 nameoff; - - switch (command->type) - { - case BFD_MACH_O_LC_LOAD_DYLIB: - case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: - case BFD_MACH_O_LC_ID_DYLIB: - case BFD_MACH_O_LC_REEXPORT_DYLIB: - case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB: - break; - default: - BFD_FAIL (); - return -1; - } - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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; - cmd->name_str = bfd_alloc (abfd, cmd->name_len); - if (cmd->name_str == NULL) - return -1; - if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0 - || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len) - return -1; - return 0; -} - -static int -bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED, - bfd_mach_o_load_command *command ATTRIBUTE_UNUSED) -{ - /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */ - - BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB); - return 0; -} - -static int -bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib; - struct mach_o_fvmlib_command_external raw; - unsigned int nameoff; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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; - fvm->name_len = command->len - nameoff; - fvm->name_str = bfd_alloc (abfd, fvm->name_len); - if (fvm->name_str == NULL) - return -1; - if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0 - || bfd_bread (fvm->name_str, fvm->name_len, abfd) != fvm->name_len) - return -1; - return 0; -} - -static int -bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - bfd_mach_o_thread_command *cmd = &command->command.thread; - 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)); - - /* 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 -1; - - if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4; - nflavours++; - } - - /* Allocate threads. */ - cmd->flavours = bfd_alloc - (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)); - if (cmd->flavours == NULL) - return -1; - cmd->nflavours = nflavours; - - offset = 8; - nflavours = 0; - while (offset != command->len) - { - struct mach_o_thread_command_external raw; - - if (offset >= command->len) - return -1; - - if (nflavours >= cmd->nflavours) - return -1; - - if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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++; - } - - 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 -1; - - for (;;) - { - sprintf (sname, "%s.%s.%u", prefix, flavourstr, j); - if (bfd_get_section_by_name (abfd, sname) == NULL) - break; - j++; - } - - bfdsec = bfd_make_section_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 0; -} - -static int -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_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module)); - if (cmd->dylib_module == NULL) - return -1; - - if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0) - return -1; - - 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 -1; - - 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 int i; - - cmd->dylib_toc = bfd_alloc - (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content)); - if (cmd->dylib_toc == NULL) - return -1; - - if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0) - return -1; - - 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 -1; - - 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_alloc - (abfd, cmd->nindirectsyms * sizeof (unsigned int)); - if (cmd->indirect_syms == NULL) - return -1; - - if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0) - return -1; - - 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 -1; - - *is = bfd_h_get_32 (abfd, raw); - } - } - - if (cmd->nextrefsyms != 0) - { - unsigned long v; - unsigned int i; - - cmd->ext_refs = bfd_alloc - (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference)); - if (cmd->ext_refs == NULL) - return -1; - - if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0) - return -1; - - 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 -1; - - /* 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 -1; - mdata->dysymtab = cmd; - - return 0; -} - -static int -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_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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 -1; - mdata->symtab = symtab; - return 0; -} - -static int -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_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (cmd->uuid, 16, abfd) != 16) - return -1; - - return 0; -} - -static int -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_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - cmd->dataoff = bfd_get_32 (abfd, raw.dataoff); - cmd->datasize = bfd_get_32 (abfd, raw.datasize); - return 0; -} - -static int -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_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - 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 -1; - if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0 - || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len) - return -1; - return 0; -} - -static int -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; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off); - cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size); - cmd->bind_off = bfd_get_32 (abfd, raw.bind_off); - cmd->bind_size = bfd_get_32 (abfd, raw.bind_size); - 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->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off); - cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size); - cmd->export_off = bfd_get_32 (abfd, raw.export_off); - cmd->export_size = bfd_get_32 (abfd, raw.export_size); - return 0; -} - -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; - unsigned int ver; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return FALSE; - - ver = bfd_get_32 (abfd, raw.version); - cmd->rel = ver >> 16; - cmd->maj = ver >> 8; - cmd->min = ver; - cmd->reserved = bfd_get_32 (abfd, raw.reserved); - return TRUE; -} - -static bfd_boolean -bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info; - struct mach_o_encryption_info_command_external raw; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return FALSE; - - cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff); - cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize); - cmd->cryptid = bfd_get_32 (abfd, raw.cryptid); - return TRUE; -} - -static bfd_boolean -bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_main_command *cmd = &command->command.main; - struct mach_o_entry_point_command_external raw; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return FALSE; - - cmd->entryoff = bfd_get_64 (abfd, raw.entryoff); - cmd->stacksize = bfd_get_64 (abfd, raw.stacksize); - return TRUE; -} - -static bfd_boolean -bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command) -{ - bfd_mach_o_source_version_command *cmd = &command->command.source_version; - struct mach_o_source_version_command_external raw; - bfd_uint64_t ver; - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return FALSE; - - ver = bfd_get_64 (abfd, raw.version); - /* Note: we use a serie of shift to avoid shift > 32 (for which gcc - generates warnings) in case of the host doesn't support 64 bit - integers. */ - cmd->e = ver & 0x3ff; - ver >>= 10; - cmd->d = ver & 0x3ff; - ver >>= 10; - cmd->c = ver & 0x3ff; - ver >>= 10; - cmd->b = ver & 0x3ff; - ver >>= 10; - cmd->a = ver & 0xffffff; - return TRUE; -} - -static int -bfd_mach_o_read_segment (bfd *abfd, - bfd_mach_o_load_command *command, - unsigned int wide) -{ - bfd_mach_o_segment_command *seg = &command->command.segment; - unsigned long i; - - if (wide) - { - struct mach_o_segment_command_64_external raw; - - BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64); - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - 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; - - BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); - - if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0 - || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw)) - return -1; - - memcpy (seg->segname, raw.segname, 16); - seg->segname[16] = '\0'; - - seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr); - seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize); - seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff); - seg->filesize = bfd_h_get_32 (abfd, raw.filesize); - seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot); - seg->initprot = bfd_h_get_32 (abfd, raw.initprot); - seg->nsects = bfd_h_get_32 (abfd, raw.nsects); - seg->flags = bfd_h_get_32 (abfd, raw.flags); - } - seg->sect_head = NULL; - seg->sect_tail = NULL; - - for (i = 0; i < seg->nsects; i++) - { - bfd_vma segoff; - asection *sec; - - if (wide) - segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE - + (i * BFD_MACH_O_SECTION_64_SIZE); - else - segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE - + (i * BFD_MACH_O_SECTION_SIZE); - - sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide); - if (sec == NULL) - return -1; - - bfd_mach_o_append_section_to_segment (seg, sec); - } - - return 0; -} - -static int -bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command) -{ - return bfd_mach_o_read_segment (abfd, command, 0); -} - -static int -bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command) -{ - return bfd_mach_o_read_segment (abfd, command, 1); -} - -static int -bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command) -{ - struct mach_o_load_command_external raw; - unsigned int cmd; - - /* Read command type and length. */ - if (bfd_seek (abfd, command->offset, SEEK_SET) != 0 - || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE) - return -1; - - 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_read_segment_32 (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_SEGMENT_64: - if (bfd_mach_o_read_segment_64 (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_SYMTAB: - if (bfd_mach_o_read_symtab (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_SYMSEG: - break; - case BFD_MACH_O_LC_THREAD: - case BFD_MACH_O_LC_UNIXTHREAD: - if (bfd_mach_o_read_thread (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_LOAD_DYLINKER: - case BFD_MACH_O_LC_ID_DYLINKER: - if (bfd_mach_o_read_dylinker (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_LOAD_DYLIB: - case BFD_MACH_O_LC_ID_DYLIB: - case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: - case BFD_MACH_O_LC_REEXPORT_DYLIB: - case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB: - if (bfd_mach_o_read_dylib (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_PREBOUND_DYLIB: - if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_LOADFVMLIB: - case BFD_MACH_O_LC_IDFVMLIB: - if (bfd_mach_o_read_fvmlib (abfd, command) != 0) - return -1; - 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) != 0) - return -1; - break; - case BFD_MACH_O_LC_DYSYMTAB: - if (bfd_mach_o_read_dysymtab (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_TWOLEVEL_HINTS: - case BFD_MACH_O_LC_PREBIND_CKSUM: - break; - case BFD_MACH_O_LC_UUID: - if (bfd_mach_o_read_uuid (abfd, command) != 0) - return -1; - 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: - if (bfd_mach_o_read_linkedit (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_ENCRYPTION_INFO: - if (!bfd_mach_o_read_encryption_info (abfd, command)) - return -1; - break; - case BFD_MACH_O_LC_DYLD_INFO: - if (bfd_mach_o_read_dyld_info (abfd, command) != 0) - return -1; - break; - case BFD_MACH_O_LC_VERSION_MIN_MACOSX: - case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS: - if (!bfd_mach_o_read_version_min (abfd, command)) - return -1; - break; - case BFD_MACH_O_LC_MAIN: - if (!bfd_mach_o_read_main (abfd, command)) - return -1; - break; - case BFD_MACH_O_LC_SOURCE_VERSION: - if (!bfd_mach_o_read_source_version (abfd, command)) - return -1; - break; - default: - (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"), - abfd, (unsigned long) command->type); - break; - } - - return 0; -} - -static void -bfd_mach_o_flatten_sections (bfd *abfd) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - long csect = 0; - unsigned long i; - - /* Count total number of sections. */ - mdata->nsects = 0; - - for (i = 0; i < mdata->header.ncmds; i++) - { - if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT - || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) - { - bfd_mach_o_segment_command *seg; - - seg = &mdata->commands[i].command.segment; - mdata->nsects += seg->nsects; - } - } - - /* Allocate sections array. */ - mdata->sections = bfd_alloc (abfd, - mdata->nsects * sizeof (bfd_mach_o_section *)); - - /* Fill the array. */ - csect = 0; - - for (i = 0; i < mdata->header.ncmds; i++) - { - if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT - || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) - { - bfd_mach_o_segment_command *seg; - bfd_mach_o_section *sec; - - seg = &mdata->commands[i].command.segment; - BFD_ASSERT (csect + seg->nsects <= mdata->nsects); - - for (sec = seg->sect_head; sec != NULL; sec = sec->next) - mdata->sections[csect++] = sec; - } - } -} - -static bfd_boolean -bfd_mach_o_scan_start_address (bfd *abfd) -{ - bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); - bfd_mach_o_thread_command *cmd = NULL; - unsigned long i; - - for (i = 0; i < mdata->header.ncmds; i++) - if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) || - (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD)) - { - cmd = &mdata->commands[i].command.thread; - break; - } - else if (mdata->commands[i].type == BFD_MACH_O_LC_MAIN - && mdata->nsects > 1) - { - bfd_mach_o_main_command *main_cmd = &mdata->commands[i].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; - } - } - - /* An object file has no start address, so do not fail if not found. */ - if (cmd == NULL) - return TRUE; - - /* FIXME: create a subtarget hook ? */ - for (i = 0; i < cmd->nflavours; i++) - { - if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386) - && (cmd->flavours[i].flavour - == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32)) - { - unsigned char buf[4]; - - if (bfd_seek (abfd, cmd->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)) - { - unsigned char buf[4]; - - if (bfd_seek (abfd, cmd->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) - && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64)) - { - unsigned char buf[8]; - - if (bfd_seek (abfd, cmd->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) - && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64)) - { - unsigned char buf[8]; - - if (bfd_seek (abfd, cmd->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 TRUE; -} - -bfd_boolean -bfd_mach_o_set_arch_mach (bfd *abfd, - enum bfd_architecture arch, - unsigned long machine) -{ - bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); - - /* If this isn't the right architecture for this backend, and this - isn't the generic backend, fail. */ - if (arch != bed->arch - && arch != bfd_arch_unknown - && bed->arch != bfd_arch_unknown) - return FALSE; - - return bfd_default_set_arch_mach (abfd, arch, machine); -} - -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; - - abfd->flags = abfd->flags & BFD_IN_MEMORY; - switch (header->filetype) - { - case BFD_MACH_O_MH_OBJECT: - abfd->flags |= HAS_RELOC; - break; - case BFD_MACH_O_MH_EXECUTE: - abfd->flags |= EXEC_P; - break; - case BFD_MACH_O_MH_DYLIB: - case BFD_MACH_O_MH_BUNDLE: - abfd->flags |= DYNAMIC; - break; - } - - abfd->tdata.mach_o_data = mdata; - - bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, - &cputype, &cpusubtype); - if (cputype == bfd_arch_unknown) - { - (*_bfd_error_handler) - (_("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 FALSE; - - for (i = 0; i < header->ncmds; i++) - { - bfd_mach_o_load_command *cur = &mdata->commands[i]; - - if (i == 0) - cur->offset = hdrsize; - else - { - bfd_mach_o_load_command *prev = &mdata->commands[i - 1]; - cur->offset = prev->offset + prev->len; - } - - if (bfd_mach_o_read_command (abfd, cur) < 0) - return FALSE; - } - } - - /* Sections should be flatten before scanning start address. */ - bfd_mach_o_flatten_sections (abfd); - if (!bfd_mach_o_scan_start_address (abfd)) - return FALSE; - - return TRUE; -} - -bfd_boolean -bfd_mach_o_mkobject_init (bfd *abfd) -{ - bfd_mach_o_data_struct *mdata = NULL; - - mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)); - if (mdata == NULL) - return FALSE; - abfd->tdata.mach_o_data = mdata; - - mdata->header.magic = 0; - mdata->header.cputype = 0; - mdata->header.cpusubtype = 0; - mdata->header.filetype = 0; - mdata->header.ncmds = 0; - mdata->header.sizeofcmds = 0; - mdata->header.flags = 0; - mdata->header.byteorder = BFD_ENDIAN_UNKNOWN; - mdata->commands = NULL; - mdata->nsects = 0; - mdata->sections = 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_header_p (bfd *abfd, - bfd_mach_o_filetype filetype, - bfd_mach_o_cpu_type cputype) -{ - bfd_mach_o_header header; - bfd_mach_o_data_struct *mdata; - - if (!bfd_mach_o_read_header (abfd, &header)) - goto wrong; - - if (! (header.byteorder == BFD_ENDIAN_BIG - || header.byteorder == BFD_ENDIAN_LITTLE)) - { - (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"), - (unsigned long) header.byteorder); - goto wrong; - } - - if (! ((header.byteorder == BFD_ENDIAN_BIG - && abfd->xvec->byteorder == BFD_ENDIAN_BIG - && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) - || (header.byteorder == BFD_ENDIAN_LITTLE - && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE - && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) - goto wrong; - - /* 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; - } - - 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; - - if (!bfd_mach_o_scan (abfd, &header, mdata)) - goto wrong; - - return abfd->xvec; - - wrong: - bfd_set_error (bfd_error_wrong_format); - - fail: - return NULL; -} - -static const bfd_target * -bfd_mach_o_gen_object_p (bfd *abfd) -{ - return bfd_mach_o_header_p (abfd, 0, 0); -} - -static const bfd_target * -bfd_mach_o_gen_core_p (bfd *abfd) -{ - return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0); -} - -typedef struct mach_o_fat_archentry -{ - unsigned long cputype; - unsigned long cpusubtype; - unsigned long offset; - unsigned long size; - unsigned long align; -} mach_o_fat_archentry; - -typedef struct mach_o_fat_data_struct -{ - unsigned long magic; - unsigned long nfat_arch; - mach_o_fat_archentry *archentries; -} mach_o_fat_data_struct; - -const bfd_target * -bfd_mach_o_archive_p (bfd *abfd) -{ - mach_o_fat_data_struct *adata = NULL; - struct mach_o_fat_header_external hdr; - unsigned long i; - - 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 (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)); - if (adata->archentries == NULL) - goto error; - - for (i = 0; i < adata->nfat_arch; i++) - { - struct mach_o_fat_arch_external arch; - if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch)) - goto error; - adata->archentries[i].cputype = bfd_getb32 (arch.cputype); - adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype); - adata->archentries[i].offset = bfd_getb32 (arch.offset); - adata->archentries[i].size = bfd_getb32 (arch.size); - adata->archentries[i].align = bfd_getb32 (arch.align); - } - - abfd->tdata.mach_o_fat_data = adata; - return abfd->xvec; - - error: - if (adata != NULL) - bfd_release (abfd, adata); - bfd_set_error (bfd_error_wrong_format); - return NULL; -} - -/* Set the filename for a fat binary member ABFD, whose bfd architecture is - ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY. - Set arelt_data and origin fields too. */ - -static void -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); - - if (ap) - { - /* Use the architecture name if known. */ - abfd->filename = ap->printable_name; - } - else - { - /* Forge a uniq id. */ - const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1; - char *name = bfd_alloc (abfd, namelen); - snprintf (name, namelen, "0x%lx-0x%lx", - entry->cputype, entry->cpusubtype); - abfd->filename = name; - } - - areltdata = bfd_zmalloc (sizeof (struct areltdata)); - areltdata->parsed_size = entry->size; - abfd->arelt_data = areltdata; - abfd->iostream = NULL; - abfd->origin = entry->offset; -} - -bfd * -bfd_mach_o_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) - { - /* Start at first one. */ - i = 0; - } - else - { - /* Find index of PREV. */ - for (i = 0; i < adata->nfat_arch; i++) - { - if (adata->archentries[i].offset == prev->origin) - break; - } - - if (i == adata->nfat_arch) - { - /* Not found. */ - bfd_set_error (bfd_error_bad_value); - return NULL; - } - - /* Get next entry. */ - i++; - } - - if (i >= adata->nfat_arch) - { - bfd_set_error (bfd_error_no_more_archived_files); - return NULL; - } - - entry = &adata->archentries[i]; - 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); - - bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry); - - bfd_set_arch_mach (nbfd, arch_type, arch_subtype); - - 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; - } - - buf->st_mtime = 0; - buf->st_uid = 0; - buf->st_gid = 0; - buf->st_mode = 0644; - buf->st_size = arelt_size (abfd); - - return 0; -} - -/* 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) -{ - bfd *res; - mach_o_fat_data_struct *adata; - unsigned int i; - - 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; - - /* This is a Mach-O fat image. */ - adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data; - BFD_ASSERT (adata != NULL); - - for (i = 0; i < adata->nfat_arch; i++) - { - struct mach_o_fat_archentry *e = &adata->archentries[i]; - enum bfd_architecture cpu_type; - unsigned long cpu_subtype; - - bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype, - &cpu_type, &cpu_subtype); - if (cpu_type != arch->arch || cpu_subtype != arch->mach) - continue; - - /* The architecture is found. */ - res = _bfd_new_bfd_contained_in (abfd); - if (res == NULL) - return NULL; - - bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e); - - if (bfd_check_format (res, format)) - { - BFD_ASSERT (bfd_get_arch_info (res) == arch); - return res; - } - bfd_close (res); - return NULL; - } - - return NULL; -} - -int -bfd_mach_o_lookup_command (bfd *abfd, - bfd_mach_o_load_command_type type, - bfd_mach_o_load_command **mcommand) -{ - struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd); - bfd_mach_o_load_command *ncmd = NULL; - unsigned int i, num; - - BFD_ASSERT (md != NULL); - BFD_ASSERT (mcommand != NULL); - - num = 0; - for (i = 0; i < md->header.ncmds; i++) - { - struct bfd_mach_o_load_command *cmd = &md->commands[i]; - - if (cmd->type != type) - continue; - - if (num == 0) - ncmd = cmd; - num++; - } - - *mcommand = ncmd; - return num; -} - -unsigned long -bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type) -{ - switch (type) - { - case BFD_MACH_O_CPU_TYPE_MC680x0: - return 0x04000000; - case BFD_MACH_O_CPU_TYPE_MC88000: - return 0xffffe000; - case BFD_MACH_O_CPU_TYPE_POWERPC: - return 0xc0000000; - case BFD_MACH_O_CPU_TYPE_I386: - return 0xc0000000; - case BFD_MACH_O_CPU_TYPE_SPARC: - return 0xf0000000; - case BFD_MACH_O_CPU_TYPE_I860: - return 0; - case BFD_MACH_O_CPU_TYPE_HPPA: - return 0xc0000000 - 0x04000000; - default: - return 0; - } -} - -/* 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 = bfd_mach_o_get_data (abfd); - unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype); - unsigned int i = 0; - - for (i = 0; i < mdata->header.ncmds; i++) - { - bfd_mach_o_load_command *cur = &mdata->commands[i]; - bfd_mach_o_segment_command *seg = NULL; - - if (cur->type != BFD_MACH_O_LC_SEGMENT) - continue; - - seg = &cur->command.segment; - - if ((seg->vmaddr + seg->vmsize) == stackaddr) - { - unsigned long start = seg->fileoff; - unsigned long end = seg->fileoff + seg->filesize; - unsigned char *buf = bfd_malloc (1024); - unsigned long size = 1024; - - for (;;) - { - bfd_size_type nread = 0; - unsigned long offset; - int found_nonnull = 0; - - if (size > (end - start)) - size = (end - start); - - buf = bfd_realloc_or_free (buf, size); - if (buf == NULL) - return -1; - - if (bfd_seek (abfd, end - size, SEEK_SET) != 0) - { - free (buf); - return -1; - } - - nread = bfd_bread (buf, size, abfd); - - if (nread != size) - { - free (buf); - return -1; - } - - for (offset = 4; offset <= size; offset += 4) - { - unsigned long val; - - val = *((unsigned long *) (buf + size - offset)); - if (! found_nonnull) - { - if (val != 0) - found_nonnull = 1; - } - else if (val == 0x0) - { - unsigned long bottom; - unsigned long top; - - bottom = seg->fileoff + seg->filesize - offset; - top = seg->fileoff + seg->filesize - 4; - *rbuf = bfd_malloc (top - bottom); - *rlen = top - bottom; - - memcpy (*rbuf, buf + size - *rlen, *rlen); - free (buf); - return 0; - } - } - - if (size == (end - start)) - break; - - size *= 2; - } - - free (buf); - } - } - - return -1; -} - -char * -bfd_mach_o_core_file_failing_command (bfd *abfd) -{ - unsigned char *buf = NULL; - unsigned int len = 0; - int ret = -1; - - ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len); - if (ret < 0) - return NULL; - - return (char *) buf; -} - -int -bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) -{ - return 0; -} - -static bfd_mach_o_uuid_command * -bfd_mach_o_lookup_uuid_command (bfd *abfd) -{ - bfd_mach_o_load_command *uuid_cmd; - int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd); - if (ncmd != 1) - 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) - 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, - asection *section, - asymbol **symbols, - bfd_vma offset, - const char **filename_ptr, - const char **functionname_ptr, - unsigned int *line_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)) - return FALSE; - } - break; - default: - return FALSE; - } - if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, - section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr, NULL, 0, - &mdata->dwarf2_find_line_info)) - return TRUE; - return FALSE; -} - -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; - char *dsym_filename = (char *)(fat_bfd - ? fat_bfd->filename - : mdata->dsym_bfd->filename); - bfd_close (mdata->dsym_bfd); - mdata->dsym_bfd = NULL; - if (fat_bfd) - bfd_close (fat_bfd); - free (dsym_filename); - } - } - - if (bfd_get_format (abfd) == bfd_archive - && abfd->xvec == &mach_o_fat_vec) - return TRUE; - 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_swap_reloc_in 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_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_BIG_ENDIAN -#undef TARGET_ARCHIVE -#undef TARGET_PRIORITY - -#define TARGET_NAME mach_o_le_vec -#define TARGET_STRING "mach-o-le" -#define TARGET_ARCHITECTURE bfd_arch_unknown -#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_BIG_ENDIAN -#undef TARGET_ARCHIVE -#undef TARGET_PRIORITY - -/* Not yet handled: creating an archive. */ -#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive - -/* Not used. */ -#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr -#define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_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_mach_o_fat_stat_arch_elt -#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp - -#define TARGET_NAME mach_o_fat_vec -#define TARGET_STRING "mach-o-fat" -#define TARGET_ARCHITECTURE bfd_arch_unknown -#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_BIG_ENDIAN -#undef TARGET_ARCHIVE -#undef TARGET_PRIORITY |