/* Mach-O support for BFD.
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright 1999-2013 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#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>
-#ifndef BFD_IO_FUNCS
-#define BFD_IO_FUNCS 0
-#endif
-
-#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
-#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
-#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
-#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
-#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
-#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
-#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
-#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
-#define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
-#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
-#define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup
-#define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
-#define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook
-#define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
-#define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
-#define bfd_mach_o_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
-#define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
-#define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno
-#define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line
-#define bfd_mach_o_find_inliner_info _bfd_nosymbols_find_inliner_info
-#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
-#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
-#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
-#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
-#define bfd_mach_o_bfd_relax_section bfd_generic_relax_section
-#define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
-#define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
-#define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols
-#define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms
-#define bfd_mach_o_bfd_final_link _bfd_generic_final_link
-#define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section
-#define bfd_mach_o_set_arch_mach bfd_default_set_arch_mach
-#define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
-#define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
-#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
-#define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents
-#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
-#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
-#define bfd_mach_o_bfd_is_group_section bfd_generic_is_group_section
-#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
-#define bfd_mach_o_section_already_linked _bfd_generic_section_already_linked
-#define bfd_mach_o_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
-#define bfd_mach_o_core_file_matches_executable_p generic_core_file_matches_executable_p
-
-static unsigned int
+#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 = abfd->tdata.mach_o_data;
+ mdata = bfd_mach_o_get_data (abfd);
return mdata->header.version;
}
bfd_mach_o_valid (bfd *abfd)
{
if (abfd == NULL || abfd->xvec == NULL)
- return 0;
+ return FALSE;
- if (! ((abfd->xvec == &mach_o_be_vec)
- || (abfd->xvec == &mach_o_le_vec)
- || (abfd->xvec == &mach_o_fat_vec)))
- return 0;
+ if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
+ return FALSE;
+
+ if (bfd_mach_o_get_data (abfd) == NULL)
+ return FALSE;
+ return TRUE;
+}
+
+static INLINE bfd_boolean
+mach_o_wide_p (bfd_mach_o_header *header)
+{
+ switch (header->version)
+ {
+ case 1:
+ return FALSE;
+ case 2:
+ return TRUE;
+ default:
+ BFD_FAIL ();
+ return FALSE;
+ }
+}
+
+static INLINE bfd_boolean
+bfd_mach_o_wide_p (bfd *abfd)
+{
+ return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
+}
+
+/* Tables to translate well known Mach-O segment/section names to bfd
+ names. Use of canonical names (such as .text or .debug_frame) is required
+ by gdb. */
+
+/* __TEXT Segment. */
+static const mach_o_section_name_xlat text_section_names_xlat[] =
+ {
+ { ".text", "__text",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
+ { ".const", "__const",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".static_const", "__static_const",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".cstring", "__cstring",
+ SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
+ BFD_MACH_O_S_CSTRING_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".literal4", "__literal4",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".literal8", "__literal8",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 3},
+ { ".literal16", "__literal16",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
+ BFD_MACH_O_S_ATTR_NONE, 4},
+ { ".constructor", "__constructor",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".destructor", "__destructor",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".eh_frame", "__eh_frame",
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
+ BFD_MACH_O_S_ATTR_LIVE_SUPPORT
+ | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
+ | BFD_MACH_O_S_ATTR_NO_TOC, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __DATA Segment. */
+static const mach_o_section_name_xlat data_section_names_xlat[] =
+ {
+ { ".data", "__data",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".bss", "__bss",
+ SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".const_data", "__const",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".static_data", "__static_data",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".mod_init_func", "__mod_init_func",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".mod_term_func", "__mod_term_func",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".dyld", "__dyld",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 0},
+ { ".cfstring", "__cfstring",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __DWARF Segment. */
+static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
+ {
+ { ".debug_frame", "__debug_frame",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_info", "__debug_info",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_abbrev", "__debug_abbrev",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_aranges", "__debug_aranges",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_macinfo", "__debug_macinfo",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_line", "__debug_line",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_loc", "__debug_loc",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_pubnames", "__debug_pubnames",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_pubtypes", "__debug_pubtypes",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_str", "__debug_str",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_ranges", "__debug_ranges",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_macro", "__debug_macro",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_gdb_scripts", "__debug_gdb_scri",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+/* __OBJC Segment. */
+static const mach_o_section_name_xlat objc_section_names_xlat[] =
+ {
+ { ".objc_class", "__class",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_meta_class", "__meta_class",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cat_cls_meth", "__cat_cls_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cat_inst_meth", "__cat_inst_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_protocol", "__protocol",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_string_object", "__string_object",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cls_meth", "__cls_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_inst_meth", "__inst_meth",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_cls_refs", "__cls_refs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_message_refs", "__message_refs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_symbols", "__symbols",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_category", "__category",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_class_vars", "__class_vars",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_instance_vars", "__instance_vars",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_module_info", "__module_info",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_selector_strs", "__selector_strs",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_image_info", "__image_info",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc_selector_fixup", "__sel_fixup",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ /* Objc V1 */
+ { ".objc1_class_ext", "__class_ext",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc1_property_list", "__property",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { ".objc1_protocol_ext", "__protocol_ext",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+static const mach_o_segment_name_xlat segsec_names_xlat[] =
+ {
+ { "__TEXT", text_section_names_xlat },
+ { "__DATA", data_section_names_xlat },
+ { "__DWARF", dwarf_section_names_xlat },
+ { "__OBJC", objc_section_names_xlat },
+ { NULL, NULL }
+ };
+
+static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
+
+/* For both cases bfd-name => mach-o name and vice versa, the specific target
+ is checked before the generic. This allows a target (e.g. ppc for cstring)
+ to override the generic definition with a more specific one. */
+
+/* Fetch the translation from a Mach-O section designation (segment, section)
+ as a bfd short name, if one exists. Otherwise return NULL.
+
+ Allow the segment and section names to be unterminated 16 byte arrays. */
+
+const mach_o_section_name_xlat *
+bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
+ const char *sectname)
+{
+ const struct mach_o_segment_name_xlat *seg;
+ const mach_o_section_name_xlat *sec;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ /* First try any target-specific translations defined... */
+ if (bed->segsec_names_xlat)
+ for (seg = bed->segsec_names_xlat; seg->segname; seg++)
+ if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
+ for (sec = seg->sections; sec->mach_o_name; sec++)
+ if (strncmp (sec->mach_o_name, sectname,
+ BFD_MACH_O_SECTNAME_SIZE) == 0)
+ return sec;
+
+ /* ... and then the Mach-O generic ones. */
+ for (seg = segsec_names_xlat; seg->segname; seg++)
+ if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
+ for (sec = seg->sections; sec->mach_o_name; sec++)
+ if (strncmp (sec->mach_o_name, sectname,
+ BFD_MACH_O_SECTNAME_SIZE) == 0)
+ return sec;
+
+ return NULL;
+}
+
+/* If the bfd_name for this section is a 'canonical' form for which we
+ know the Mach-O data, return the segment name and the data for the
+ Mach-O equivalent. Otherwise return NULL. */
+
+const mach_o_section_name_xlat *
+bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
+ const char **segname)
+{
+ const struct mach_o_segment_name_xlat *seg;
+ const mach_o_section_name_xlat *sec;
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+ *segname = NULL;
+
+ if (bfd_name[0] != '.')
+ return NULL;
+
+ /* First try any target-specific translations defined... */
+ if (bed->segsec_names_xlat)
+ for (seg = bed->segsec_names_xlat; seg->segname; seg++)
+ for (sec = seg->sections; sec->bfd_name; sec++)
+ if (strcmp (bfd_name, sec->bfd_name) == 0)
+ {
+ *segname = seg->segname;
+ return sec;
+ }
+
+ /* ... and then the Mach-O generic ones. */
+ for (seg = segsec_names_xlat; seg->segname; seg++)
+ for (sec = seg->sections; sec->bfd_name; sec++)
+ if (strcmp (bfd_name, sec->bfd_name) == 0)
+ {
+ *segname = seg->segname;
+ return sec;
+ }
+
+ return NULL;
+}
+
+/* Convert Mach-O section name to BFD.
+
+ Try to use standard/canonical names, for which we have tables including
+ default flag settings - which are returned. Otherwise forge a new name
+ in the form "<segmentname>.<sectionname>" this will be prefixed with
+ LC_SEGMENT. if the segment name does not begin with an underscore.
+
+ SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
+ terminated if the name length is exactly 16 bytes - but must be if the name
+ length is less than 16 characters). */
+
+void
+bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
+ const char *secname, const char **name,
+ flagword *flags)
+{
+ const mach_o_section_name_xlat *xlat;
+ char *res;
+ unsigned int len;
+ const char *pfx = "";
+
+ *name = NULL;
+ *flags = SEC_NO_FLAGS;
+
+ /* First search for a canonical name...
+ xlat will be non-null if there is an entry for segname, secname. */
+ xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
+ if (xlat)
+ {
+ len = strlen (xlat->bfd_name);
+ res = bfd_alloc (abfd, len+1);
+ if (res == NULL)
+ return;
+ memcpy (res, xlat->bfd_name, len+1);
+ *name = res;
+ *flags = xlat->bfd_flags;
+ return;
+ }
+
+ /* ... else we make up a bfd name from the segment concatenated with the
+ section. */
+
+ len = 16 + 1 + 16 + 1;
+
+ /* 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;
- if (abfd->tdata.mach_o_data == NULL)
+ elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
+ if (elsz == 0)
return 0;
- return 1;
+ else
+ return sec->size / elsz;
}
+
/* Copy any private info we understand from the input symbol
to the output symbol. */
-static bfd_boolean
+bfd_boolean
bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
- asymbol *isymbol ATTRIBUTE_UNUSED,
+ asymbol *isymbol,
bfd *obfd ATTRIBUTE_UNUSED,
- asymbol *osymbol 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. */
-static bfd_boolean
+bfd_boolean
bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
- asection *isection ATTRIBUTE_UNUSED,
+ asection *isection,
bfd *obfd ATTRIBUTE_UNUSED,
- asection *osection 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. */
-static bfd_boolean
+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));
- obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
- obfd->tdata.mach_o_data->ibfd = ibfd;
+ /* FIXME: copy commands. */
+
return TRUE;
}
-static long
-bfd_mach_o_count_symbols (bfd *abfd)
-{
- bfd_mach_o_data_struct *mdata = NULL;
- long nsyms = 0;
- unsigned long i;
+/* 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_ASSERT (bfd_mach_o_valid (abfd));
- mdata = abfd->tdata.mach_o_data;
+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);
- for (i = 0; i < mdata->header.ncmds; i++)
- if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
- {
- bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
- nsyms += sym->nsyms;
- }
+ if (!mdata)
+ return FALSE;
- return nsyms;
+ mdata->header.flags = flags;
+ return TRUE;
}
+/* Count the total number of symbols. */
+
static long
+bfd_mach_o_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);
- if (nsyms < 0)
- return nsyms;
-
return ((nsyms + 1) * sizeof (asymbol *));
}
-static long
+long
bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
long nsyms = bfd_mach_o_count_symbols (abfd);
- asymbol **csym = alocation;
- unsigned long i, j;
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
+ unsigned long j;
if (nsyms < 0)
return nsyms;
- for (i = 0; i < mdata->header.ncmds; i++)
+ if (nsyms == 0)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
- {
- bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
+ /* Do not try to read symbols if there are none. */
+ alocation[0] = NULL;
+ return 0;
+ }
- if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
- {
- fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i);
- return 0;
- }
+ 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);
+ BFD_ASSERT (sym->symbols != NULL);
- for (j = 0; j < sym->nsyms; j++)
- {
- BFD_ASSERT (csym < (alocation + nsyms));
- *csym++ = &sym->symbols[j];
- }
- }
- }
+ for (j = 0; j < sym->nsyms; j++)
+ alocation[j] = &sym->symbols[j].symbol;
- *csym++ = NULL;
+ alocation[j] = NULL;
return nsyms;
}
-static void
+/* 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);
}
-static void
+void
bfd_mach_o_print_symbol (bfd *abfd,
- PTR afile,
+ void * afile,
asymbol *symbol,
bfd_print_symbol_type how)
{
FILE *file = (FILE *) afile;
- unsigned char ntype;
- unsigned char nsect;
- unsigned int ndesc;
const char *name;
+ bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
switch (how)
{
fprintf (file, "%s", symbol->name);
break;
default:
- bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
- ntype = BFD_MACH_O_SYM_NTYPE (symbol);
- nsect = BFD_MACH_O_SYM_NSECT (symbol);
- ndesc = BFD_MACH_O_SYM_NDESC (symbol);
- if (ntype & BFD_MACH_O_N_STAB)
- name = bfd_get_stab_name (ntype);
+ 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 (ntype & BFD_MACH_O_N_TYPE)
+ switch (asym->n_type & BFD_MACH_O_N_TYPE)
{
case BFD_MACH_O_N_UNDF:
- name = "UND";
+ if (symbol->value == 0)
+ name = "UND";
+ else
+ name = "COM";
break;
case BFD_MACH_O_N_ABS:
name = "ABS";
}
if (name == NULL)
name = "";
- fprintf (file, " %02x %-6s %02x %04x", ntype, name, nsect, ndesc);
- if ((ntype & BFD_MACH_O_N_STAB) == 0
- && (ntype & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
- fprintf (file, " %-5s", symbol->section->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 ATTRIBUTE_UNUSED,
+ bfd_mach_o_cpu_subtype msubtype,
enum bfd_architecture *type,
unsigned long *subtype)
{
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_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;
*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; break;
- case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; 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_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;
+ *subtype = bfd_mach_ppc;
break;
case BFD_MACH_O_CPU_TYPE_POWERPC_64:
*type = bfd_arch_powerpc;
- *subtype = bfd_mach_ppc64;
+ *subtype = bfd_mach_ppc64;
break;
default:
*type = bfd_arch_unknown;
}
}
-static int
+static bfd_boolean
bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
{
- unsigned char buf[32];
+ struct mach_o_header_external raw;
unsigned int size;
- size = (header->version == 2) ? 32 : 28;
+ size = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
- bfd_h_put_32 (abfd, header->magic, buf + 0);
- bfd_h_put_32 (abfd, header->cputype, buf + 4);
- bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
- bfd_h_put_32 (abfd, header->filetype, buf + 12);
- bfd_h_put_32 (abfd, header->ncmds, buf + 16);
- bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
- bfd_h_put_32 (abfd, header->flags, buf + 24);
+ bfd_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 (header->version == 2)
- bfd_h_put_32 (abfd, header->reserved, buf + 28);
+ if (mach_o_wide_p (header))
+ bfd_h_put_32 (abfd, header->reserved, raw.reserved);
- bfd_seek (abfd, 0, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, size, abfd) != size)
- return -1;
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bwrite (&raw, size, abfd) != size)
+ return FALSE;
- return 0;
+ return TRUE;
}
static int
-bfd_mach_o_scan_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
+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;
- unsigned char buf[8];
- bfd_vma offset;
- unsigned int nflavours;
+ 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;
- nflavours = 0;
for (i = 0; i < cmd->nflavours; i++)
{
BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
- BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
+ BFD_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;
+ }
- bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
- bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
+ dsym->ilocalsym = 0;
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
- return -1;
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ asymbol **symbols = bfd_get_outsymbols (abfd);
+ unsigned long i;
- offset += cmd->flavours[i].size + 8;
+ /* 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;
}
- return 0;
-}
+ dsym->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
+ if (dsym->nindirectsyms > 0)
+ {
+ unsigned i;
+ unsigned n;
-static int
-bfd_mach_o_scan_write_section_32 (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset)
-{
- unsigned char buf[68];
-
- memcpy (buf, section->sectname, 16);
- memcpy (buf + 16, section->segname, 16);
- bfd_h_put_32 (abfd, section->addr, buf + 32);
- bfd_h_put_32 (abfd, section->size, buf + 36);
- bfd_h_put_32 (abfd, section->offset, buf + 40);
- bfd_h_put_32 (abfd, section->align, buf + 44);
- bfd_h_put_32 (abfd, section->reloff, buf + 48);
- bfd_h_put_32 (abfd, section->nreloc, buf + 52);
- bfd_h_put_32 (abfd, section->flags, buf + 56);
- bfd_h_put_32 (abfd, section->reserved1, buf + 60);
- bfd_h_put_32 (abfd, section->reserved2, buf + 64);
-
- bfd_seek (abfd, offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
- return -1;
+ mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
+ dsym->indirectsymoff = mdata->filelen;
+ mdata->filelen += dsym->nindirectsyms * 4;
- return 0;
-}
+ dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4);
+ if (dsym->indirect_syms == NULL)
+ return FALSE;
-static int
-bfd_mach_o_scan_write_section_64 (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset)
-{
- unsigned char buf[80];
-
- memcpy (buf, section->sectname, 16);
- memcpy (buf + 16, section->segname, 16);
- bfd_h_put_64 (abfd, section->addr, buf + 32);
- bfd_h_put_64 (abfd, section->size, buf + 40);
- bfd_h_put_32 (abfd, section->offset, buf + 48);
- bfd_h_put_32 (abfd, section->align, buf + 52);
- bfd_h_put_32 (abfd, section->reloff, buf + 56);
- bfd_h_put_32 (abfd, section->nreloc, buf + 60);
- bfd_h_put_32 (abfd, section->flags, buf + 64);
- bfd_h_put_32 (abfd, section->reserved1, buf + 68);
- bfd_h_put_32 (abfd, section->reserved2, buf + 72);
- bfd_h_put_32 (abfd, section->reserved3, buf + 76);
-
- bfd_seek (abfd, offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 80, abfd) != 80)
- return -1;
+ n = 0;
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
- return 0;
-}
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ {
+ 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;
+ }
+ }
+ }
-static int
-bfd_mach_o_scan_write_section (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset,
- unsigned int wide)
-{
- if (wide)
- return bfd_mach_o_scan_write_section_64 (abfd, section, offset);
- else
- return bfd_mach_o_scan_write_section_32 (abfd, section, offset);
+ return TRUE;
}
-static int
-bfd_mach_o_scan_write_segment (bfd *abfd,
- bfd_mach_o_load_command *command,
- unsigned int wide)
+/* 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)
{
- unsigned char buf[64];
- bfd_mach_o_segment_command *seg = &command->command.segment;
- unsigned long i;
+ 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;
- if (wide)
- {
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
-
- memcpy (buf, seg->segname, 16);
-
- bfd_h_put_64 (abfd, seg->vmaddr, buf + 16);
- bfd_h_put_64 (abfd, seg->vmsize, buf + 24);
- bfd_h_put_64 (abfd, seg->fileoff, buf + 32);
- bfd_h_put_64 (abfd, seg->filesize, buf + 40);
- bfd_h_put_32 (abfd, seg->maxprot, buf + 48);
- bfd_h_put_32 (abfd, seg->initprot, buf + 52);
- bfd_h_put_32 (abfd, seg->nsects, buf + 56);
- bfd_h_put_32 (abfd, seg->flags, buf + 60);
-
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 64, abfd) != 64)
- return -1;
- }
- else
+ /* Fill in the file type, if not already set. */
+
+ if (mdata->header.filetype == 0)
{
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
-
- memcpy (buf, seg->segname, 16);
-
- bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
- bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
- bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
- bfd_h_put_32 (abfd, seg->filesize, buf + 28);
- bfd_h_put_32 (abfd, seg->maxprot, buf + 32);
- bfd_h_put_32 (abfd, seg->initprot, buf + 36);
- bfd_h_put_32 (abfd, seg->nsects, buf + 40);
- bfd_h_put_32 (abfd, seg->flags, buf + 44);
-
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 48, abfd) != 48)
- return -1;
+ 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;
}
- {
- char buf[1024];
- bfd_vma nbytes = seg->filesize;
- bfd_vma curoff = seg->fileoff;
+ /* 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;
- while (nbytes > 0)
- {
- bfd_vma thiswrite = nbytes;
+ /* 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;
- if (thiswrite > 1024)
- thiswrite = 1024;
+ /* 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)
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, thiswrite, abfd) != thiswrite)
- return -1;
+ a command (segment) to contain all the sections,
+ command for the symbol table,
+ a command for the dysymtab.
- bfd_seek (abfd, curoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, thiswrite, abfd) != thiswrite)
- return -1;
+ ??? maybe we should assert that this is an MH_OBJECT? */
- nbytes -= thiswrite;
- curoff += thiswrite;
- }
- }
+ if (mdata->nsects > 0)
+ {
+ segcmd_idx = 0;
+ mdata->header.ncmds = 1;
+ }
- for (i = 0; i < seg->nsects; i++)
+ if (bfd_get_symcount (abfd) > 0)
{
- bfd_vma segoff;
- if (wide)
- segoff = command->offset + 64 + 8 + (i * 80);
- else
- segoff = command->offset + 48 + 8 + (i * 68);
+ mdata->header.ncmds++;
+ symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */
+ }
- if (bfd_mach_o_scan_write_section
- (abfd, &seg->sections[i], segoff, wide) != 0)
- return -1;
+ /* 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;
}
- return 0;
-}
+ if (wide)
+ base_offset = BFD_MACH_O_HEADER_64_SIZE;
+ else
+ base_offset = BFD_MACH_O_HEADER_SIZE;
-static int
-bfd_mach_o_scan_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
-{
- return bfd_mach_o_scan_write_segment (abfd, command, 0);
-}
+ /* Well, we must have a header, at least. */
+ mdata->filelen = base_offset;
-static int
-bfd_mach_o_scan_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
-{
- return bfd_mach_o_scan_write_segment (abfd, command, 1);
-}
+ /* A bit unusual, but no content is valid;
+ as -n empty.s -o empty.o */
+ if (mdata->header.ncmds == 0)
+ return TRUE;
-static int
-bfd_mach_o_scan_write_symtab_symbols (bfd *abfd, bfd_mach_o_load_command *command)
-{
- bfd_mach_o_symtab_command *sym = &command->command.symtab;
- asymbol *s = NULL;
- unsigned long i;
+ mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds
+ * sizeof (bfd_mach_o_load_command));
+ if (mdata->commands == NULL)
+ return FALSE;
- for (i = 0; i < sym->nsyms; i++)
+ if (segcmd_idx >= 0)
{
- unsigned char buf[12];
- bfd_vma symoff = sym->symoff + (i * 12);
- unsigned char ntype = 0;
- unsigned char nsect = 0;
- short ndesc = 0;
-
- s = &sym->symbols[i];
+ bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx];
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
- /* Instead just set from the stored values. */
- ntype = BFD_MACH_O_SYM_NTYPE (s);
- nsect = BFD_MACH_O_SYM_NSECT (s);
- ndesc = BFD_MACH_O_SYM_NDESC (s);
-
- bfd_h_put_32 (abfd, s->name - sym->strtab, buf);
- bfd_h_put_8 (abfd, ntype, buf + 4);
- bfd_h_put_8 (abfd, nsect, buf + 5);
- bfd_h_put_16 (abfd, ndesc, buf + 6);
- bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8);
+ /* 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;
- bfd_seek (abfd, symoff, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
+ /* 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
{
- fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
- 12, (unsigned long) symoff);
- return -1;
+ 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;
}
- return 0;
-}
+ 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;
+ }
-static int
-bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
-{
- bfd_mach_o_symtab_command *seg = &command->command.symtab;
- unsigned char buf[16];
+ /* 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;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+ cmd->type_required = FALSE;
+ cmd->len = sizeof (struct mach_o_dysymtab_command_external)
+ + BFD_MACH_O_LC_SIZE;
- bfd_h_put_32 (abfd, seg->symoff, buf);
- bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
- bfd_h_put_32 (abfd, seg->stroff, buf + 8);
- bfd_h_put_32 (abfd, seg->strsize, buf + 12);
+ mdata->header.sizeofcmds += cmd->len;
+ mdata->filelen += cmd->len;
+ }
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
- return -1;
+ /* 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 (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
- return -1;
+ /* 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;
- return 0;
+ /* The symtab command is filled in when the symtab is written. */
+ return TRUE;
}
-static bfd_boolean
-bfd_mach_o_write_contents (bfd *abfd)
-{
- unsigned int i;
- asection *s;
-
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+/* Set the contents of a section. */
- /* Write data sections first in case they overlap header data to be
- written later. */
-
- for (s = abfd->sections; s != (asection *) NULL; s = s->next)
- ;
+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;
- /* Now write header information. */
- if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
+ /* 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;
- for (i = 0; i < mdata->header.ncmds; i++)
- {
- unsigned char buf[8];
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- unsigned long typeflag;
-
- typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
-
- bfd_h_put_32 (abfd, typeflag, buf);
- bfd_h_put_32 (abfd, cur->len, buf + 4);
-
- bfd_seek (abfd, cur->offset, SEEK_SET);
- if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
- return FALSE;
+ if (count == 0)
+ return TRUE;
- switch (cur->type)
- {
- case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_scan_write_segment_32 (abfd, cur) != 0)
- return FALSE;
- break;
- case BFD_MACH_O_LC_SEGMENT_64:
- if (bfd_mach_o_scan_write_segment_64 (abfd, cur) != 0)
- return FALSE;
- break;
- case BFD_MACH_O_LC_SYMTAB:
- if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0)
- return FALSE;
- break;
- case BFD_MACH_O_LC_SYMSEG:
- break;
- case BFD_MACH_O_LC_THREAD:
- case BFD_MACH_O_LC_UNIXTHREAD:
- if (bfd_mach_o_scan_write_thread (abfd, cur) != 0)
- return FALSE;
- break;
- case BFD_MACH_O_LC_LOADFVMLIB:
- case BFD_MACH_O_LC_IDFVMLIB:
- case BFD_MACH_O_LC_IDENT:
- case BFD_MACH_O_LC_FVMFILE:
- case BFD_MACH_O_LC_PREPAGE:
- case BFD_MACH_O_LC_DYSYMTAB:
- case BFD_MACH_O_LC_LOAD_DYLIB:
- case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
- case BFD_MACH_O_LC_ID_DYLIB:
- case BFD_MACH_O_LC_LOAD_DYLINKER:
- case BFD_MACH_O_LC_ID_DYLINKER:
- case BFD_MACH_O_LC_PREBOUND_DYLIB:
- case BFD_MACH_O_LC_ROUTINES:
- case BFD_MACH_O_LC_SUB_FRAMEWORK:
- break;
- default:
- fprintf (stderr,
- "unable to write unknown load command 0x%lx\n",
- (unsigned long) cur->type);
- return FALSE;
- }
- }
+ pos = section->filepos + offset;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
+ return FALSE;
return TRUE;
}
-static int
+int
bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
/* Make an empty symbol. This is required only because
bfd_make_section_anyway wants to create a symbol for the section. */
-static asymbol *
+asymbol *
bfd_mach_o_make_empty_symbol (bfd *abfd)
{
- asymbol *new;
-
- new = bfd_zalloc (abfd, sizeof (* new));
- if (new == NULL)
- return new;
- new->the_bfd = abfd;
- return new;
+ asymbol *new_symbol;
+
+ new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
+ if (new_symbol == NULL)
+ return new_symbol;
+ new_symbol->the_bfd = abfd;
+ new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
+ return new_symbol;
}
-static int
+static bfd_boolean
bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
{
- unsigned char buf[32];
+ struct mach_o_header_external raw;
unsigned int size;
bfd_vma (*get32) (const void *) = NULL;
- bfd_seek (abfd, 0, SEEK_SET);
-
/* Just read the magic number. */
- if (bfd_bread ((PTR) buf, 4, abfd) != 4)
- return -1;
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
+ return FALSE;
- if (bfd_getb32 (buf) == 0xfeedface)
+ if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
{
header->byteorder = BFD_ENDIAN_BIG;
- header->magic = 0xfeedface;
+ header->magic = BFD_MACH_O_MH_MAGIC;
header->version = 1;
get32 = bfd_getb32;
}
- else if (bfd_getl32 (buf) == 0xfeedface)
+ else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
{
header->byteorder = BFD_ENDIAN_LITTLE;
- header->magic = 0xfeedface;
+ header->magic = BFD_MACH_O_MH_MAGIC;
header->version = 1;
get32 = bfd_getl32;
}
- else if (bfd_getb32 (buf) == 0xfeedfacf)
+ else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
{
header->byteorder = BFD_ENDIAN_BIG;
- header->magic = 0xfeedfacf;
+ header->magic = BFD_MACH_O_MH_MAGIC_64;
header->version = 2;
get32 = bfd_getb32;
}
- else if (bfd_getl32 (buf) == 0xfeedfacf)
+ else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
{
header->byteorder = BFD_ENDIAN_LITTLE;
- header->magic = 0xfeedfacf;
+ header->magic = BFD_MACH_O_MH_MAGIC_64;
header->version = 2;
get32 = bfd_getl32;
}
else
{
header->byteorder = BFD_ENDIAN_UNKNOWN;
- return -1;
+ return FALSE;
}
/* Once the size of the header is known, read the full header. */
- size = (header->version == 2) ? 32 : 28;
+ size = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
- bfd_seek (abfd, 0, SEEK_SET);
- if (bfd_bread ((PTR) buf, size, abfd) != size)
- return -1;
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bread (&raw, size, abfd) != size)
+ return FALSE;
- header->cputype = (*get32) (buf + 4);
- header->cpusubtype = (*get32) (buf + 8);
- header->filetype = (*get32) (buf + 12);
- header->ncmds = (*get32) (buf + 16);
- header->sizeofcmds = (*get32) (buf + 20);
- header->flags = (*get32) (buf + 24);
+ 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 (header->version == 2)
- header->reserved = (*get32) (buf + 28);
+ if (mach_o_wide_p (header))
+ header->reserved = (*get32) (raw.reserved);
+ else
+ header->reserved = 0;
- return 0;
+ return TRUE;
}
-static asection *
-bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
- unsigned long prot)
+bfd_boolean
+bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
{
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SEGMENT";
- unsigned int snamelen;
- flagword flags;
-
- snamelen = strlen (prefix) + 1
- + strlen (section->segname) + 1
- + strlen (section->sectname) + 1;
+ bfd_mach_o_section *s;
+ unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
- sname = bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return NULL;
-
- /* Use canonical dwarf section names for dwarf sections. */
- if (strcmp (section->segname, "__DWARF") == 0
- && strncmp (section->sectname, "__", 2) == 0)
- sprintf (sname, ".%s", section->sectname + 2);
- else if (strcmp (section->segname, "__TEXT") == 0)
+ s = bfd_mach_o_get_mach_o_section (sec);
+ if (s == NULL)
{
- if (strcmp (section->sectname, "__eh_frame") == 0)
- strcpy (sname, ".eh_frame");
- else if (section->sectname[0])
- sprintf (sname, "%s.%s", section->segname, section->sectname);
+ 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
- strcpy (sname, section->segname);
+ /* Create default flags. */
+ bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
}
- else if (strcmp (section->segname, "__DATA") == 0)
+
+ 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)
{
- if (section->sectname[0])
- sprintf (sname, "%s.%s", section->segname, section->sectname);
+ /* Try to guess flags. */
+ if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
+ flags = SEC_DEBUGGING;
else
- strcpy (sname, section->segname);
+ {
+ 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
- sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
-
- if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
- flags = SEC_HAS_CONTENTS | SEC_DEBUGGING;
else
{
- flags = SEC_ALLOC;
- if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
- != BFD_MACH_O_S_ZEROFILL)
- {
- flags |= SEC_HAS_CONTENTS | 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;
- }
+ if ((flags & SEC_DEBUGGING) == 0)
+ flags |= SEC_ALLOC;
}
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
- if (bfdsec == NULL)
- return NULL;
- bfdsec->vma = section->addr;
- bfdsec->lma = section->addr;
- bfdsec->size = section->size;
- bfdsec->filepos = section->offset;
- bfdsec->alignment_power = section->align;
- bfdsec->segment_mark = 0;
+ 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 bfdsec;
+ return bfd_make_section_anyway_with_flags (abfd, sname, flags);
}
-static int
-bfd_mach_o_scan_read_section_32 (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset,
- unsigned long prot)
+static asection *
+bfd_mach_o_read_section_32 (bfd *abfd,
+ unsigned int offset,
+ unsigned long prot)
{
- unsigned char buf[68];
+ struct mach_o_section_32_external raw;
+ asection *sec;
+ bfd_mach_o_section *section;
- bfd_seek (abfd, offset, SEEK_SET);
- if (bfd_bread ((PTR) buf, 68, abfd) != 68)
- return -1;
+ 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;
- memcpy (section->sectname, buf, 16);
- section->sectname[16] = '\0';
- memcpy (section->segname, buf + 16, 16);
- section->segname[16] = '\0';
- section->addr = bfd_h_get_32 (abfd, buf + 32);
- section->size = bfd_h_get_32 (abfd, buf + 36);
- section->offset = bfd_h_get_32 (abfd, buf + 40);
- section->align = bfd_h_get_32 (abfd, buf + 44);
- section->reloff = bfd_h_get_32 (abfd, buf + 48);
- section->nreloc = bfd_h_get_32 (abfd, buf + 52);
- section->flags = bfd_h_get_32 (abfd, buf + 56);
- section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
- section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
+ section = 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;
- section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
- if (section->bfdsection == NULL)
- return -1;
+ bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
- return 0;
+ return sec;
}
-static int
-bfd_mach_o_scan_read_section_64 (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset,
- unsigned long prot)
+static asection *
+bfd_mach_o_read_section_64 (bfd *abfd,
+ unsigned int offset,
+ unsigned long prot)
{
- unsigned char buf[80];
+ struct mach_o_section_64_external raw;
+ asection *sec;
+ bfd_mach_o_section *section;
- bfd_seek (abfd, offset, SEEK_SET);
- if (bfd_bread ((PTR) buf, 80, abfd) != 80)
- return -1;
+ 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;
- memcpy (section->sectname, buf, 16);
- section->sectname[16] = '\0';
- memcpy (section->segname, buf + 16, 16);
- section->segname[16] = '\0';
- section->addr = bfd_h_get_64 (abfd, buf + 32);
- section->size = bfd_h_get_64 (abfd, buf + 40);
- section->offset = bfd_h_get_32 (abfd, buf + 48);
- section->align = bfd_h_get_32 (abfd, buf + 52);
- section->reloff = bfd_h_get_32 (abfd, buf + 56);
- section->nreloc = bfd_h_get_32 (abfd, buf + 60);
- section->flags = bfd_h_get_32 (abfd, buf + 64);
- section->reserved1 = bfd_h_get_32 (abfd, buf + 68);
- section->reserved2 = bfd_h_get_32 (abfd, buf + 72);
- section->reserved3 = bfd_h_get_32 (abfd, buf + 76);
- section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
-
- if (section->bfdsection == NULL)
- return -1;
+ sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
+ if (sec == NULL)
+ return NULL;
- return 0;
+ 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 int
-bfd_mach_o_scan_read_section (bfd *abfd,
- bfd_mach_o_section *section,
- bfd_vma offset,
- unsigned long prot,
- unsigned int wide)
+static asection *
+bfd_mach_o_read_section (bfd *abfd,
+ unsigned int offset,
+ unsigned long prot,
+ unsigned int wide)
{
if (wide)
- return bfd_mach_o_scan_read_section_64 (abfd, section, offset, prot);
+ return bfd_mach_o_read_section_64 (abfd, offset, prot);
else
- return bfd_mach_o_scan_read_section_32 (abfd, section, offset, prot);
+ return bfd_mach_o_read_section_32 (abfd, offset, prot);
}
-int
-bfd_mach_o_scan_read_symtab_symbol (bfd *abfd,
- bfd_mach_o_symtab_command *sym,
- asymbol *s,
- unsigned long i)
-{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
- unsigned int wide = (mdata->header.version == 2);
- unsigned int symwidth = wide ? 16 : 12;
- bfd_vma symoff = sym->symoff + (i * symwidth);
- unsigned char buf[16];
+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;
BFD_ASSERT (sym->strtab != NULL);
- bfd_seek (abfd, symoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, symwidth, abfd) != symwidth)
+ if (bfd_seek (abfd, symoff, SEEK_SET) != 0
+ || bfd_bread (&raw, symwidth, abfd) != symwidth)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
- symwidth, (unsigned long) symoff);
- return -1;
+ (*_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, buf);
- type = bfd_h_get_8 (abfd, buf + 4);
- symtype = (type & 0x0e);
- section = bfd_h_get_8 (abfd, buf + 5);
- desc = bfd_h_get_16 (abfd, buf + 6);
+ 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, buf + 8);
+ value = bfd_h_get_64 (abfd, raw.n_value);
else
- value = bfd_h_get_32 (abfd, buf + 8);
+ value = bfd_h_get_32 (abfd, raw.n_value);
if (stroff >= sym->strsize)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
- (unsigned long) stroff, (unsigned long) sym->strsize);
- return -1;
+ (*_bfd_error_handler)
+ (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
+ (unsigned long) stroff,
+ (unsigned long) sym->strsize);
+ return FALSE;
}
- s->the_bfd = abfd;
- s->name = sym->strtab + stroff;
- s->value = value;
- s->udata.i = (type << 24) | (section << 16) | desc;
- s->flags = 0x0;
+ s->symbol.the_bfd = abfd;
+ s->symbol.name = sym->strtab + stroff;
+ s->symbol.value = value;
+ s->symbol.flags = 0x0;
+ s->symbol.udata.i = i;
+ s->n_type = type;
+ s->n_sect = section;
+ s->n_desc = desc;
if (type & BFD_MACH_O_N_STAB)
{
- s->flags |= BSF_DEBUGGING;
- s->section = bfd_und_section_ptr;
+ s->symbol.flags |= BSF_DEBUGGING;
+ s->symbol.section = bfd_und_section_ptr;
switch (type)
{
case N_FUN:
case N_GSYM:
if ((section > 0) && (section <= mdata->nsects))
{
- s->section = mdata->sections[section - 1]->bfdsection;
- s->value = s->value - mdata->sections[section - 1]->addr;
+ s->symbol.section = mdata->sections[section - 1]->bfdsection;
+ s->symbol.value =
+ s->symbol.value - mdata->sections[section - 1]->addr;
}
break;
}
}
else
{
- if (type & BFD_MACH_O_N_PEXT)
- s->flags |= BSF_GLOBAL;
-
- if (type & BFD_MACH_O_N_EXT)
- s->flags |= BSF_GLOBAL;
-
- if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
- s->flags |= BSF_LOCAL;
+ if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
+ s->symbol.flags |= BSF_GLOBAL;
+ else
+ s->symbol.flags |= BSF_LOCAL;
switch (symtype)
{
case BFD_MACH_O_N_UNDF:
- s->section = bfd_und_section_ptr;
+ if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
+ && s->symbol.value != 0)
+ {
+ /* A common symbol. */
+ s->symbol.section = bfd_com_section_ptr;
+ s->symbol.flags = BSF_NO_FLAGS;
+ }
+ else
+ {
+ s->symbol.section = bfd_und_section_ptr;
+ if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
+ s->symbol.flags |= BSF_WEAK;
+ }
break;
case BFD_MACH_O_N_PBUD:
- s->section = bfd_und_section_ptr;
+ s->symbol.section = bfd_und_section_ptr;
break;
case BFD_MACH_O_N_ABS:
- s->section = bfd_abs_section_ptr;
+ s->symbol.section = bfd_abs_section_ptr;
break;
case BFD_MACH_O_N_SECT:
if ((section > 0) && (section <= mdata->nsects))
{
- s->section = mdata->sections[section - 1]->bfdsection;
- s->value = s->value - mdata->sections[section - 1]->addr;
+ s->symbol.section = mdata->sections[section - 1]->bfdsection;
+ s->symbol.value =
+ s->symbol.value - mdata->sections[section - 1]->addr;
}
else
{
/* Mach-O uses 0 to mean "no section"; not an error. */
if (section != 0)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
- "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
- s->name, section, mdata->nsects);
+ (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
+ s->symbol.name, section, mdata->nsects);
}
- s->section = bfd_und_section_ptr;
+ s->symbol.section = bfd_und_section_ptr;
}
break;
case BFD_MACH_O_N_INDR:
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
- "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
- s->name);
- s->section = bfd_und_section_ptr;
+ /* FIXME: we don't follow the BFD convention as this indirect symbol
+ won't be followed by the referenced one. This looks harmless
+ unless we start using the linker. */
+ s->symbol.flags |= BSF_INDIRECT;
+ s->symbol.section = bfd_ind_section_ptr;
+ s->symbol.value = 0;
break;
default:
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
- "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
- s->name, symtype);
- s->section = bfd_und_section_ptr;
+ (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
+ s->symbol.name, symtype);
+ s->symbol.section = bfd_und_section_ptr;
break;
}
}
- return 0;
+ return TRUE;
}
-int
-bfd_mach_o_scan_read_symtab_strtab (bfd *abfd,
- bfd_mach_o_symtab_command *sym)
+bfd_boolean
+bfd_mach_o_read_symtab_strtab (bfd *abfd)
{
- BFD_ASSERT (sym->strtab == NULL);
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
+
+ /* Fail if there is no symtab. */
+ if (sym == NULL)
+ return FALSE;
+
+ /* Success if already loaded. */
+ if (sym->strtab)
+ return TRUE;
if (abfd->flags & BFD_IN_MEMORY)
{
if ((sym->stroff + sym->strsize) > b->size)
{
bfd_set_error (bfd_error_file_truncated);
- return -1;
+ return FALSE;
}
sym->strtab = (char *) b->buffer + sym->stroff;
- return 0;
}
-
- sym->strtab = bfd_alloc (abfd, sym->strsize);
- if (sym->strtab == NULL)
- return -1;
-
- bfd_seek (abfd, sym->stroff, SEEK_SET);
- if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
+ else
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
- sym->strsize, sym->stroff);
- return -1;
+ 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 0;
+ return TRUE;
}
-int
-bfd_mach_o_scan_read_symtab_symbols (bfd *abfd,
- bfd_mach_o_symtab_command *sym)
+bfd_boolean
+bfd_mach_o_read_symtab_symbols (bfd *abfd)
{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_symtab_command *sym = mdata->symtab;
unsigned long i;
- int ret;
-
- BFD_ASSERT (sym->symbols == NULL);
- sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
- if (sym->symbols == NULL)
+ if (sym == NULL || sym->symbols)
{
- fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
- return -1;
+ /* Return now if there are no symbols or if already loaded. */
+ return TRUE;
}
- ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
- if (ret != 0)
- return ret;
+ sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
- for (i = 0; i < sym->nsyms; i++)
+ if (sym->symbols == NULL)
{
- ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
- if (ret != 0)
- return ret;
+ (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
+ return FALSE;
}
- return 0;
-}
-
-int
-bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd,
- bfd_mach_o_dysymtab_command *dysym,
- bfd_mach_o_symtab_command *sym,
- asymbol *s,
- unsigned long i)
-{
- unsigned long isymoff = dysym->indirectsymoff + (i * 4);
- unsigned long symindex;
- unsigned char buf[4];
-
- BFD_ASSERT (i < dysym->nindirectsyms);
+ if (!bfd_mach_o_read_symtab_strtab (abfd))
+ return FALSE;
- bfd_seek (abfd, isymoff, SEEK_SET);
- if (bfd_bread ((PTR) buf, 4, abfd) != 4)
+ for (i = 0; i < sym->nsyms; i++)
{
- fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
- (unsigned long) 4, isymoff);
- return -1;
+ if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
+ return FALSE;
}
- symindex = bfd_h_get_32 (abfd, buf);
- return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
+ return TRUE;
}
static const char *
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_THREAD_STATE_NONE: return "THREAD_STATE_NONE";
+ case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
default: return "UNKNOWN";
}
}
{
switch ((int) flavour)
{
- case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
- case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
- case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
- case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
+ case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
+ case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
+ case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
+ case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
+ case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
+ case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
default: return "UNKNOWN";
}
}
static int
-bfd_mach_o_scan_read_dylinker (bfd *abfd,
- bfd_mach_o_load_command *command)
+bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
- unsigned char buf[4];
+ struct mach_o_str_command_external raw;
unsigned int nameoff;
- asection *bfdsec;
- char *sname;
- const char *prefix;
BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
|| (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 4, abfd) != 4)
+ 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, buf + 0);
+ nameoff = bfd_h_get_32 (abfd, raw.str);
cmd->name_offset = command->offset + nameoff;
cmd->name_len = command->len - nameoff;
-
- if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)
- prefix = "LC_LOAD_DYLINKER";
- else if (command->type == BFD_MACH_O_LC_ID_DYLINKER)
- prefix = "LC_ID_DYLINKER";
- else
- abort ();
-
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
+ cmd->name_str = bfd_alloc (abfd, cmd->name_len);
+ if (cmd->name_str == NULL)
return -1;
- strcpy (sname, prefix);
-
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
+ if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
return -1;
-
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = command->len - nameoff;
- bfdsec->filepos = command->offset + nameoff;
- bfdsec->alignment_power = 0;
-
- cmd->section = bfdsec;
-
return 0;
}
static int
-bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_dylib_command *cmd = &command->command.dylib;
- unsigned char buf[16];
+ struct mach_o_dylib_command_external raw;
unsigned int nameoff;
- asection *bfdsec;
- char *sname;
- const char *prefix;
- BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB)
- || (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
- || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB));
+ 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;
+ }
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 16, abfd) != 16)
+ 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, buf + 0);
- cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
- cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
- cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
+ cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
+ cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
cmd->name_offset = command->offset + nameoff;
cmd->name_len = command->len - nameoff;
-
- if (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
- prefix = "LC_LOAD_DYLIB";
- else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)
- prefix = "LC_LOAD_WEAK_DYLIB";
- else if (command->type == BFD_MACH_O_LC_ID_DYLIB)
- prefix = "LC_ID_DYLIB";
- else
- abort ();
-
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
+ cmd->name_str = bfd_alloc (abfd, cmd->name_len);
+ if (cmd->name_str == NULL)
return -1;
- strcpy (sname, prefix);
-
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
+ if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
return -1;
-
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = command->len - 8;
- bfdsec->filepos = command->offset + 8;
- bfdsec->alignment_power = 0;
-
- cmd->section = bfdsec;
-
return 0;
}
static int
-bfd_mach_o_scan_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
+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; */
}
static int
-bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_data_struct *mdata = NULL;
+ 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 char buf[8];
- bfd_vma offset;
+ unsigned int offset;
unsigned int nflavours;
unsigned int i;
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
- BFD_ASSERT (bfd_mach_o_valid (abfd));
- mdata = abfd->tdata.mach_o_data;
-
+ /* Count the number of threads. */
offset = 8;
nflavours = 0;
while (offset != command->len)
{
+ struct mach_o_thread_command_external raw;
+
if (offset >= command->len)
return -1;
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
-
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
+ if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
return -1;
- offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
+ offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
nflavours++;
}
- cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
+ /* Allocate threads. */
+ cmd->flavours = bfd_alloc
+ (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
if (cmd->flavours == NULL)
return -1;
cmd->nflavours = nflavours;
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;
- bfd_seek (abfd, command->offset + offset, SEEK_SET);
-
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
+ 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, buf);
- cmd->flavours[nflavours].offset = command->offset + offset + 8;
- cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
- offset += cmd->flavours[nflavours].size + 8;
+ 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++;
}
}
static int
-bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
- unsigned char buf[72];
+ 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);
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 72, abfd) != 72)
- return -1;
+ {
+ struct mach_o_dysymtab_command_external raw;
- seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
- seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
- seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
- seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
- seg->iundefsym = bfd_h_get_32 (abfd, buf + 16);
- seg->nundefsym = bfd_h_get_32 (abfd, buf + 20);
- seg->tocoff = bfd_h_get_32 (abfd, buf + 24);
- seg->ntoc = bfd_h_get_32 (abfd, buf + 28);
- seg->modtaboff = bfd_h_get_32 (abfd, buf + 32);
- seg->nmodtab = bfd_h_get_32 (abfd, buf + 36);
- seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
- seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
- seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
- seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
- seg->extreloff = bfd_h_get_32 (abfd, buf + 56);
- seg->nextrel = bfd_h_get_32 (abfd, buf + 60);
- seg->locreloff = bfd_h_get_32 (abfd, buf + 64);
- seg->nlocrel = bfd_h_get_32 (abfd, buf + 68);
+ if (bfd_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_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_symtab_command *seg = &command->command.symtab;
- unsigned char buf[16];
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SYMTAB.stabs";
- int nlist_size = (bfd_mach_o_version (abfd) > 1) ? 16 : 12;
+ bfd_mach_o_symtab_command *symtab = &command->command.symtab;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct mach_o_symtab_command_external raw;
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 16, abfd) != 16)
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
return -1;
- seg->symoff = bfd_h_get_32 (abfd, buf);
- seg->nsyms = bfd_h_get_32 (abfd, buf + 4);
- seg->stroff = bfd_h_get_32 (abfd, buf + 8);
- seg->strsize = bfd_h_get_32 (abfd, buf + 12);
- seg->symbols = NULL;
- seg->strtab = NULL;
+ 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;
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
- return -1;
- strcpy (sname, prefix);
+ if (symtab->nsyms != 0)
+ abfd->flags |= HAS_SYMS;
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
+ if (mdata->symtab)
return -1;
+ mdata->symtab = symtab;
+ return 0;
+}
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = seg->nsyms * nlist_size;
- bfdsec->filepos = seg->symoff;
- bfdsec->alignment_power = 0;
-
- seg->stabs_segment = bfdsec;
+static int
+bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_uuid_command *cmd = &command->command.uuid;
- if (seg->nsyms != 0)
- abfd->flags |= HAS_SYMS;
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
- prefix = "LC_SYMTAB.stabstr";
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bread (cmd->uuid, 16, abfd) != 16)
return -1;
- strcpy (sname, prefix);
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
- return -1;
+ return 0;
+}
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = seg->strsize;
- bfdsec->filepos = seg->stroff;
- bfdsec->alignment_power = 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;
- seg->stabstr_segment = bfdsec;
+ 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_scan_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
{
- bfd_mach_o_uuid_command *cmd = &command->command.uuid;
- asection *bfdsec;
- char *sname;
- static const char prefix[] = "LC_UUID";
+ bfd_mach_o_str_command *cmd = &command->command.str;
+ struct mach_o_str_command_external raw;
+ unsigned long off;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
-
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) cmd->uuid, 16, abfd) != 16)
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
return -1;
- sname = bfd_alloc (abfd, strlen (prefix) + 1);
- if (sname == NULL)
+ 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;
- strcpy (sname, prefix);
-
- bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
- if (bfdsec == NULL)
+ 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;
+}
- bfdsec->vma = 0;
- bfdsec->lma = 0;
- bfdsec->size = command->len - 8;
- bfdsec->filepos = command->offset + 8;
- bfdsec->alignment_power = 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;
- cmd->section = bfdsec;
+ 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_scan_read_segment (bfd *abfd,
- bfd_mach_o_load_command *command,
- unsigned int wide)
+bfd_mach_o_read_segment (bfd *abfd,
+ bfd_mach_o_load_command *command,
+ unsigned int wide)
{
- unsigned char buf[64];
bfd_mach_o_segment_command *seg = &command->command.segment;
unsigned long i;
- asection *bfdsec;
- char *sname;
- const char *prefix = "LC_SEGMENT";
- unsigned int snamelen;
if (wide)
{
+ struct mach_o_segment_command_64_external raw;
+
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 64, abfd) != 64)
- 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;
- memcpy (seg->segname, buf, 16);
+ memcpy (seg->segname, raw.segname, 16);
seg->segname[16] = '\0';
- seg->vmaddr = bfd_h_get_64 (abfd, buf + 16);
- seg->vmsize = bfd_h_get_64 (abfd, buf + 24);
- seg->fileoff = bfd_h_get_64 (abfd, buf + 32);
- seg->filesize = bfd_h_get_64 (abfd, buf + 40);
- seg->maxprot = bfd_h_get_32 (abfd, buf + 48);
- seg->initprot = bfd_h_get_32 (abfd, buf + 52);
- seg->nsects = bfd_h_get_32 (abfd, buf + 56);
- seg->flags = bfd_h_get_32 (abfd, buf + 60);
+ 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);
- bfd_seek (abfd, command->offset + 8, SEEK_SET);
- if (bfd_bread ((PTR) buf, 48, abfd) != 48)
- 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;
- memcpy (seg->segname, buf, 16);
+ memcpy (seg->segname, raw.segname, 16);
seg->segname[16] = '\0';
- seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
- seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
- seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
- seg->filesize = bfd_h_get_32 (abfd, buf + 28);
- seg->maxprot = bfd_h_get_32 (abfd, buf + 32);
- seg->initprot = bfd_h_get_32 (abfd, buf + 36);
- seg->nsects = bfd_h_get_32 (abfd, buf + 40);
- seg->flags = bfd_h_get_32 (abfd, buf + 44);
+ 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;
- snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1;
- sname = bfd_alloc (abfd, snamelen);
- if (sname == NULL)
- return -1;
- if (strcmp (seg->segname, "__TEXT") == 0
- || strcmp (seg->segname, "__DATA") == 0
- || strcmp (seg->segname, "__IMPORT") == 0
- || strcmp (seg->segname, "__LINKEDIT") == 0)
- strcpy (sname, seg->segname);
- else
- sprintf (sname, "%s.%s", prefix, seg->segname);
-
- bfdsec = bfd_make_section_anyway (abfd, sname);
- if (bfdsec == NULL)
- return -1;
-
- bfdsec->vma = seg->vmaddr;
- bfdsec->lma = seg->vmaddr;
- bfdsec->size = seg->filesize;
- bfdsec->filepos = seg->fileoff;
- bfdsec->alignment_power = 0x0;
- bfdsec->flags = SEC_HAS_CONTENTS;
- bfdsec->segment_mark = 1;
-
- seg->segment = bfdsec;
-
- if (seg->nsects != 0)
+ for (i = 0; i < seg->nsects; i++)
{
- seg->sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
- if (seg->sections == NULL)
- return -1;
+ bfd_vma segoff;
+ asection *sec;
- for (i = 0; i < seg->nsects; i++)
- {
- bfd_vma segoff;
- if (wide)
- segoff = command->offset + 64 + 8 + (i * 80);
- else
- segoff = command->offset + 48 + 8 + (i * 68);
+ 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);
- if (bfd_mach_o_scan_read_section
- (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
- return -1;
- }
+ 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_scan_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
{
- return bfd_mach_o_scan_read_segment (abfd, command, 0);
+ return bfd_mach_o_read_segment (abfd, command, 0);
}
static int
-bfd_mach_o_scan_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
{
- return bfd_mach_o_scan_read_segment (abfd, command, 1);
+ return bfd_mach_o_read_segment (abfd, command, 1);
}
static int
-bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
{
- unsigned char buf[8];
+ struct mach_o_load_command_external raw;
+ unsigned int cmd;
- bfd_seek (abfd, command->offset, SEEK_SET);
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
+ /* 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;
- command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD);
- command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
- ? 1 : 0);
- command->len = bfd_h_get_32 (abfd, buf + 4);
+ cmd = bfd_h_get_32 (abfd, raw.cmd);
+ command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
+ command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
+ command->len = bfd_h_get_32 (abfd, raw.cmdsize);
switch (command->type)
{
case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_scan_read_segment_32 (abfd, command) != 0)
+ if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
return -1;
break;
case BFD_MACH_O_LC_SEGMENT_64:
- if (bfd_mach_o_scan_read_segment_64 (abfd, command) != 0)
+ if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
return -1;
break;
case BFD_MACH_O_LC_SYMTAB:
- if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
+ 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_scan_read_thread (abfd, command) != 0)
+ 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_scan_read_dylinker (abfd, command) != 0)
+ 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:
- if (bfd_mach_o_scan_read_dylib (abfd, command) != 0)
+ 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_scan_read_prebound_dylib (abfd, command) != 0)
+ 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_scan_read_dysymtab (abfd, command) != 0)
+ if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
return -1;
break;
- case BFD_MACH_O_LC_SUB_UMBRELLA:
- case BFD_MACH_O_LC_SUB_CLIENT:
- case BFD_MACH_O_LC_SUB_LIBRARY:
case BFD_MACH_O_LC_TWOLEVEL_HINTS:
case BFD_MACH_O_LC_PREBIND_CKSUM:
break;
case BFD_MACH_O_LC_UUID:
- if (bfd_mach_o_scan_read_uuid (abfd, command) != 0)
+ 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_REEXPORT_DYLIB:
+ 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:
- fprintf (stderr, "unable to read unknown load command 0x%lx\n",
- (unsigned long) command->type);
+ (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
+ abfd, (unsigned long) command->type);
break;
}
static void
bfd_mach_o_flatten_sections (bfd *abfd)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
long csect = 0;
- unsigned long i, j;
+ unsigned long i;
/* Count total number of sections. */
mdata->nsects = 0;
|| 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 (j = 0; j < seg->nsects; j++)
- mdata->sections[csect++] = &seg->sections[j];
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ mdata->sections[csect++] = sec;
}
}
}
-int
+static bfd_boolean
bfd_mach_o_scan_start_address (bfd *abfd)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_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))
- {
- if (cmd == NULL)
- cmd = &mdata->commands[i].command.thread;
- else
- return 0;
- }
- }
+ 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 0;
+ return TRUE;
+ /* FIXME: create a subtarget hook ? */
for (i = 0; i < cmd->nflavours; i++)
{
if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
{
unsigned char buf[4];
- bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET);
-
- if (bfd_bread (buf, 4, abfd) != 4)
- return -1;
+ if (bfd_seek (abfd, 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);
}
{
unsigned char buf[4];
- bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
-
- if (bfd_bread (buf, 4, abfd) != 4)
- return -1;
+ if (bfd_seek (abfd, 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_STATE_64))
+ && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
{
unsigned char buf[8];
- bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
-
- if (bfd_bread (buf, 8, abfd) != 8)
- return -1;
+ 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);
}
{
unsigned char buf[8];
- bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET);
-
- if (bfd_bread (buf, 8, abfd) != 8)
- return -1;
+ 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 0;
+ return TRUE;
}
-int
+bfd_boolean
+bfd_mach_o_set_arch_mach (bfd *abfd,
+ enum bfd_architecture arch,
+ unsigned long machine)
+{
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
+
+ /* If this isn't the right architecture for this backend, and this
+ isn't the generic backend, fail. */
+ if (arch != bed->arch
+ && arch != bfd_arch_unknown
+ && bed->arch != bfd_arch_unknown)
+ return FALSE;
+
+ return bfd_default_set_arch_mach (abfd, arch, machine);
+}
+
+static bfd_boolean
bfd_mach_o_scan (bfd *abfd,
bfd_mach_o_header *header,
bfd_mach_o_data_struct *mdata)
unsigned long cpusubtype;
unsigned int hdrsize;
- hdrsize = (header->version == 2) ? 32 : 28;
+ hdrsize = mach_o_wide_p (header) ?
+ BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
mdata->header = *header;
- mdata->symbols = NULL;
- abfd->flags = abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS);
+ abfd->flags = abfd->flags & BFD_IN_MEMORY;
switch (header->filetype)
{
case BFD_MACH_O_MH_OBJECT:
&cputype, &cpusubtype);
if (cputype == bfd_arch_unknown)
{
- fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
- header->cputype, header->cpusubtype);
- return -1;
+ (*_bfd_error_handler)
+ (_("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));
+ mdata->commands = bfd_alloc
+ (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
if (mdata->commands == NULL)
- return -1;
+ return FALSE;
for (i = 0; i < header->ncmds; i++)
{
cur->offset = prev->offset + prev->len;
}
- if (bfd_mach_o_scan_read_command (abfd, cur) < 0)
- return -1;
+ if (bfd_mach_o_read_command (abfd, cur) < 0)
+ return FALSE;
}
}
- if (bfd_mach_o_scan_start_address (abfd) < 0)
- return -1;
-
+ /* Sections should be flatten before scanning start address. */
bfd_mach_o_flatten_sections (abfd);
- return 0;
+ if (!bfd_mach_o_scan_start_address (abfd))
+ return FALSE;
+
+ return TRUE;
}
bfd_boolean
-bfd_mach_o_mkobject (bfd *abfd)
+bfd_mach_o_mkobject_init (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = NULL;
- mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
+ mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
if (mdata == NULL)
return FALSE;
abfd->tdata.mach_o_data = mdata;
mdata->header.flags = 0;
mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
mdata->commands = NULL;
- mdata->nsymbols = 0;
- mdata->symbols = NULL;
mdata->nsects = 0;
mdata->sections = NULL;
- mdata->ibfd = NULL;
+ mdata->dyn_reloc_cache = NULL;
return TRUE;
}
-const bfd_target *
-bfd_mach_o_object_p (bfd *abfd)
+static bfd_boolean
+bfd_mach_o_gen_mkobject (bfd *abfd)
{
- struct bfd_preserve preserve;
- bfd_mach_o_header header;
-
- preserve.marker = NULL;
- if (bfd_mach_o_read_header (abfd, &header) != 0)
- goto wrong;
-
- if (! (header.byteorder == BFD_ENDIAN_BIG
- || header.byteorder == BFD_ENDIAN_LITTLE))
- {
- fprintf (stderr, "unknown header byte-order value 0x%lx\n",
- (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;
-
- preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
- if (preserve.marker == NULL
- || !bfd_preserve_save (abfd, &preserve))
- goto fail;
-
- if (bfd_mach_o_scan (abfd, &header,
- (bfd_mach_o_data_struct *) preserve.marker) != 0)
- goto wrong;
+ bfd_mach_o_data_struct *mdata;
- bfd_preserve_finish (abfd, &preserve);
- return abfd->xvec;
+ if (!bfd_mach_o_mkobject_init (abfd))
+ return FALSE;
- wrong:
- bfd_set_error (bfd_error_wrong_format);
+ 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;
- fail:
- if (preserve.marker != NULL)
- bfd_preserve_restore (abfd, &preserve);
- return NULL;
+ return TRUE;
}
const bfd_target *
-bfd_mach_o_core_p (bfd *abfd)
+bfd_mach_o_header_p (bfd *abfd,
+ bfd_mach_o_filetype filetype,
+ bfd_mach_o_cpu_type cputype)
{
- struct bfd_preserve preserve;
bfd_mach_o_header header;
+ bfd_mach_o_data_struct *mdata;
- preserve.marker = NULL;
- if (bfd_mach_o_read_header (abfd, &header) != 0)
+ if (!bfd_mach_o_read_header (abfd, &header))
goto wrong;
if (! (header.byteorder == BFD_ENDIAN_BIG
|| header.byteorder == BFD_ENDIAN_LITTLE))
{
- fprintf (stderr, "unknown header byte-order value 0x%lx\n",
- (unsigned long) header.byteorder);
- abort ();
+ (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
+ (unsigned long) header.byteorder);
+ goto wrong;
}
if (! ((header.byteorder == BFD_ENDIAN_BIG
&& abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
goto wrong;
- if (header.filetype != BFD_MACH_O_MH_CORE)
- 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;
+ }
+ }
- preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
- if (preserve.marker == NULL
- || !bfd_preserve_save (abfd, &preserve))
+ mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
+ if (mdata == NULL)
goto fail;
- if (bfd_mach_o_scan (abfd, &header,
- (bfd_mach_o_data_struct *) preserve.marker) != 0)
+ if (!bfd_mach_o_scan (abfd, &header, mdata))
goto wrong;
- bfd_preserve_finish (abfd, &preserve);
return abfd->xvec;
wrong:
bfd_set_error (bfd_error_wrong_format);
fail:
- if (preserve.marker != NULL)
- bfd_preserve_restore (abfd, &preserve);
return NULL;
}
+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;
bfd_mach_o_archive_p (bfd *abfd)
{
mach_o_fat_data_struct *adata = NULL;
- unsigned char buf[20];
+ struct mach_o_fat_header_external hdr;
unsigned long i;
- bfd_seek (abfd, 0, SEEK_SET);
- if (bfd_bread ((PTR) buf, 8, abfd) != 8)
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
goto error;
adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
if (adata == NULL)
goto error;
- adata->magic = bfd_getb32 (buf);
- adata->nfat_arch = bfd_getb32 (buf + 4);
+ adata->magic = bfd_getb32 (hdr.magic);
+ adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
if (adata->magic != 0xcafebabe)
goto error;
+ /* Avoid matching Java bytecode files, which have the same magic number.
+ In the Java bytecode file format this field contains the JVM version,
+ which starts at 43.0. */
+ if (adata->nfat_arch > 30)
+ goto error;
- adata->archentries =
+ 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++)
{
- bfd_seek (abfd, 8 + 20 * i, SEEK_SET);
-
- if (bfd_bread ((PTR) buf, 20, abfd) != 20)
+ struct mach_o_fat_arch_external arch;
+ if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
goto error;
- adata->archentries[i].cputype = bfd_getb32 (buf);
- adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
- adata->archentries[i].offset = bfd_getb32 (buf + 8);
- adata->archentries[i].size = bfd_getb32 (buf + 12);
- adata->archentries[i].align = bfd_getb32 (buf + 16);
+ adata->archentries[i].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 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 = xstrdup (ap->printable_name);
+ }
+ else
+ {
+ /* Forge a uniq id. */
+ const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
+ char *name = xmalloc (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)
{
/* Find index of previous entry. */
if (prev == NULL)
- i = 0; /* Start at first one. */
+ {
+ /* Start at first one. */
+ i = 0;
+ }
else
{
+ /* Find index of PREV. */
for (i = 0; i < adata->nfat_arch; i++)
{
if (adata->archentries[i].offset == prev->origin)
bfd_set_error (bfd_error_bad_value);
return NULL;
}
- i++; /* Get next entry. */
- }
+
+ /* Get next entry. */
+ i++;
+ }
if (i >= adata->nfat_arch)
{
if (nbfd == NULL)
return NULL;
- nbfd->origin = entry->offset;
-
bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
&arch_type, &arch_subtype);
- /* Create the member filename.
- Use FILENAME:ARCH_NAME. */
- {
- char *s = NULL;
- const char *arch_name;
- size_t arch_file_len = strlen (bfd_get_filename (archive));
- arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
- s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
- if (s == NULL)
- return NULL;
- memcpy (s, bfd_get_filename (archive), arch_file_len);
- s[arch_file_len] = ':';
- strcpy (s + arch_file_len + 1, arch_name);
- nbfd->filename = s;
- }
- nbfd->iostream = NULL;
+ 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,
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);
if (res == NULL)
return NULL;
- res->origin = e->offset;
-
- res->filename = strdup (abfd->filename);
- res->iostream = NULL;
+ bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
if (bfd_check_format (res, format))
{
return NULL;
}
-int
-bfd_mach_o_lookup_section (bfd *abfd,
- asection *section,
- bfd_mach_o_load_command **mcommand,
- bfd_mach_o_section **msection)
-{
- struct mach_o_data_struct *md = abfd->tdata.mach_o_data;
- unsigned int i, j, num;
-
- bfd_mach_o_load_command *ncmd = NULL;
- bfd_mach_o_section *nsect = NULL;
-
- BFD_ASSERT (mcommand != NULL);
- BFD_ASSERT (msection != NULL);
-
- num = 0;
- for (i = 0; i < md->header.ncmds; i++)
- {
- struct bfd_mach_o_load_command *cmd = &md->commands[i];
- struct bfd_mach_o_segment_command *seg = NULL;
-
- if (cmd->type != BFD_MACH_O_LC_SEGMENT
- || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
- continue;
- seg = &cmd->command.segment;
-
- if (seg->segment == section)
- {
- if (num == 0)
- ncmd = cmd;
- num++;
- }
-
- for (j = 0; j < seg->nsects; j++)
- {
- struct bfd_mach_o_section *sect = &seg->sections[j];
-
- if (sect->bfdsection == section)
- {
- if (num == 0)
- nsect = sect;
- num++;
- }
- }
- }
-
- *mcommand = ncmd;
- *msection = nsect;
- return num;
-}
-
int
bfd_mach_o_lookup_command (bfd *abfd,
bfd_mach_o_load_command_type type,
bfd_mach_o_load_command **mcommand)
{
- struct mach_o_data_struct *md = NULL;
+ struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
bfd_mach_o_load_command *ncmd = NULL;
unsigned int i, num;
- md = abfd->tdata.mach_o_data;
-
BFD_ASSERT (md != NULL);
BFD_ASSERT (mcommand != NULL);
}
}
-static bfd_boolean
-bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, PTR ptr)
-{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
- FILE *file = (FILE *) ptr;
- unsigned int i, j;
- unsigned int sec_nbr = 0;
-
- fprintf (file, _("Segments and Sections:\n"));
- fprintf (file, _(" #: Segment name Section name Address\n"));
-
- for (i = 0; i < mdata->header.ncmds; i++)
- {
- bfd_mach_o_segment_command *seg;
-
- if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
- && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
- continue;
-
- seg = &mdata->commands[i].command.segment;
-
- fprintf (file, "[Segment %-16s ", seg->segname);
- fprintf_vma (file, seg->vmaddr);
- fprintf (file, "-");
- fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
- fputc (' ', file);
- fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
- fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
- fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
- fprintf (file, "]\n");
- for (j = 0; j < seg->nsects; j++)
- {
- bfd_mach_o_section *sec = &seg->sections[j];
- fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
- sec->segname, sec->sectname);
- fprintf_vma (file, sec->addr);
- fprintf (file, " ");
- fprintf_vma (file, sec->size);
- fprintf (file, " %08lx\n", sec->flags);
- }
- }
+/* The following two tables should be kept, as far as possible, in order of
+ most frequently used entries to optimize their use from gas. */
- for (i = 0; i < mdata->header.ncmds; i++)
- {
- bfd_mach_o_load_command *cmd = &mdata->commands[i];
+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);
- switch (cmd->type)
- {
- case BFD_MACH_O_LC_SEGMENT:
- case BFD_MACH_O_LC_SEGMENT_64:
- break;
- case BFD_MACH_O_LC_UUID:
- {
- bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
- unsigned int i;
-
- fprintf (file, "\n"
- "UUID:");
- for (i = 0; i < sizeof (uuid->uuid); i++)
- fprintf (file, " %02x", uuid->uuid[i]);
- fputc ('\n', file);
- }
- break;
- case BFD_MACH_O_LC_LOAD_DYLIB:
- {
- bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
- bfd_byte *data = NULL;
+ 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;
+}
- if (! bfd_malloc_and_get_section (abfd, dylib->section, &data))
- {
- if (data != NULL)
- free (data);
- break;
- }
- fprintf (file, "\n"
- "LOAD_DYLIB: %s\n",
- data + dylib->name_offset - cmd->offset - 8);
- fprintf (file, " time stamp: 0x%08lx\n",
- dylib->timestamp);
- fprintf (file, " current version: 0x%08lx\n",
- dylib->current_version);
- fprintf (file, " comptibility version: 0x%08lx\n",
- dylib->compatibility_version);
- free (data);
- break;
- }
- case BFD_MACH_O_LC_LOAD_DYLINKER:
- {
- bfd_mach_o_dylinker_command *linker = &cmd->command.dylinker;
- bfd_byte *data = NULL;
+/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
- if (! bfd_malloc_and_get_section (abfd, linker->section, &data))
- {
- if (data != NULL)
- free (data);
- break;
- }
- fprintf (file, "\n"
- "LOAD_DYLINKER: %s\n",
- data + linker->name_offset - cmd->offset - 8);
- free (data);
- break;
- }
- case BFD_MACH_O_LC_SYMTAB:
- {
- bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
- fprintf (file, "\n"
- "LC_SYMTAB: nsyms: %lu, strsize: %lu\n",
- symtab->nsyms, symtab->strsize);
- break;
- }
- case BFD_MACH_O_LC_DYSYMTAB:
- {
- bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
- fprintf (file, "\n"
- "LC_DYSYMTAB:\n"
- " local symbols: index: %lu number: %lu\n",
- dysymtab->ilocalsym, dysymtab->nlocalsym);
- fprintf (file,
- " external symbols: index: %lu number: %lu\n",
- dysymtab->iextdefsym, dysymtab->nextdefsym);
- fprintf (file,
- " undefined symbols: index: %lu number: %lu\n",
- dysymtab->iundefsym, dysymtab->nundefsym);
- fprintf (file,
- " ntoc: offset: %lu number: %lu\n",
- dysymtab->tocoff, dysymtab->ntoc);
- fprintf (file,
- " module table: offset: %lu number: %lu\n",
- dysymtab->modtaboff, dysymtab->nmodtab);
- break;
- }
- default:
- fprintf (file, "LC_%d\n", cmd->type);
- break;
- }
- }
+unsigned int
+bfd_mach_o_get_section_attribute_from_name (const char *name)
+{
+ const bfd_mach_o_xlat_name *x;
- return TRUE;
+ 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
unsigned char **rbuf,
unsigned int *rlen)
{
- bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
unsigned int i = 0;
buf = bfd_realloc_or_free (buf, size);
if (buf == NULL)
return -1;
-
- bfd_seek (abfd, end - size, SEEK_SET);
+
+ if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
+ {
+ free (buf);
+ return -1;
+ }
+
nread = bfd_bread (buf, size, abfd);
if (nread != size)
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