2009-02-23 Christophe Lyon <christophe.lyon@st.com>
[deliverable/binutils-gdb.git] / bfd / mach-o.c
index 4c4736ada0d14acf989e0d14c03697d66a972021..e0a6fa4772fcdda89612a69e0a5811af2e131f80 100644 (file)
@@ -1,12 +1,12 @@
 /* Mach-O support for BFD.
-   Copyright 1999, 2000, 2001, 2002
+   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
 
+#include "sysdep.h"
 #include "mach-o.h"
 #include "bfd.h"
-#include "sysdep.h"
 #include "libbfd.h"
 #include "libiberty.h"
+#include "aout/stab_gnu.h"
 #include <ctype.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_get_lineno _bfd_nosymbols_get_lineno
-#define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line
-#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
-#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
-#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
-#define bfd_mach_o_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
-#define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
-#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+#define bfd_mach_o_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_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
-#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
-#define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents
-#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
-#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
-#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
-
-static bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data
-  PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
-static bfd_boolean bfd_mach_o_bfd_copy_private_section_data
-  PARAMS ((bfd *, asection *, bfd *, asection *));
-static bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data
-  PARAMS ((bfd *, bfd *));
-static long bfd_mach_o_count_symbols
-  PARAMS ((bfd *));
-static long bfd_mach_o_get_symtab_upper_bound
-  PARAMS ((bfd *));
-static long bfd_mach_o_get_symtab
-  PARAMS ((bfd *, asymbol **));
-static void bfd_mach_o_get_symbol_info
-  PARAMS ((bfd *, asymbol *, symbol_info *));
-static void bfd_mach_o_print_symbol
-  PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
-static void bfd_mach_o_convert_architecture
-  PARAMS ((bfd_mach_o_cpu_type, bfd_mach_o_cpu_subtype,
-          enum bfd_architecture *, unsigned long *));
-static bfd_boolean bfd_mach_o_write_contents
-  PARAMS ((bfd *));
-static int bfd_mach_o_sizeof_headers
-  PARAMS ((bfd *, bfd_boolean));
-static asymbol * bfd_mach_o_make_empty_symbol
-  PARAMS ((bfd *));
-static int bfd_mach_o_write_header
-  PARAMS ((bfd *, bfd_mach_o_header *));
-static int bfd_mach_o_read_header
-  PARAMS ((bfd *, bfd_mach_o_header *));
-static asection * bfd_mach_o_make_bfd_section
-  PARAMS ((bfd *, bfd_mach_o_section *));
-static int bfd_mach_o_scan_read_section
-  PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
-static int bfd_mach_o_scan_write_section
-  PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
-static int bfd_mach_o_scan_write_symtab_symbols
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_thread
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dylinker
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dylib
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_prebound_dylib
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_thread
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_symtab
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_dysymtab
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_symtab
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_segment
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_write_segment
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static int bfd_mach_o_scan_read_command
-  PARAMS ((bfd *, bfd_mach_o_load_command *));
-static void bfd_mach_o_flatten_sections
-  PARAMS ((bfd *));
-static const char * bfd_mach_o_i386_flavour_string
-  PARAMS ((unsigned int));
-static const char * bfd_mach_o_ppc_flavour_string
-  PARAMS ((unsigned int));
-
-/* The flags field of a section structure is separated into two parts a section
-   type and section attributes.  The section types are mutually exclusive (it
-   can only have one type) but the section attributes are not (it may have more
-   than one attribute).  */
-
-#define SECTION_TYPE             0x000000ff     /* 256 section types.  */
-#define SECTION_ATTRIBUTES       0xffffff00     /*  24 section attributes.  */
-
-/* Constants for the section attributes part of the flags field of a section
-   structure.  */
-
-#define SECTION_ATTRIBUTES_USR   0xff000000     /* User-settable attributes.  */
-#define S_ATTR_PURE_INSTRUCTIONS 0x80000000     /* Section contains only true machine instructions.  */
-#define SECTION_ATTRIBUTES_SYS   0x00ffff00     /* System setable attributes.  */
-#define S_ATTR_SOME_INSTRUCTIONS 0x00000400     /* Section contains some machine instructions.  */
-#define S_ATTR_EXT_RELOC         0x00000200     /* Section has external relocation entries.  */
-#define S_ATTR_LOC_RELOC         0x00000100     /* Section has local relocation entries.  */
-
-#define N_STAB 0xe0
-#define N_TYPE 0x1e
-#define N_EXT  0x01
-#define N_UNDF 0x0
-#define N_ABS  0x2
-#define N_SECT 0xe
-#define N_INDR 0xa
+#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 
+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;
+
+  return mdata->header.version;
+}
 
 bfd_boolean
-bfd_mach_o_valid (abfd)
-     bfd *abfd;
+bfd_mach_o_valid (bfd *abfd)
 {
   if (abfd == NULL || abfd->xvec == NULL)
     return 0;
@@ -183,11 +106,10 @@ bfd_mach_o_valid (abfd)
    to the output symbol.  */
 
 static bfd_boolean
-bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol)
-     bfd *ibfd ATTRIBUTE_UNUSED;
-     asymbol *isymbol ATTRIBUTE_UNUSED;
-     bfd *obfd ATTRIBUTE_UNUSED;
-     asymbol *osymbol ATTRIBUTE_UNUSED;
+bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
+                                        asymbol *isymbol ATTRIBUTE_UNUSED,
+                                        bfd *obfd ATTRIBUTE_UNUSED,
+                                        asymbol *osymbol ATTRIBUTE_UNUSED)
 {
   return TRUE;
 }
@@ -196,11 +118,10 @@ bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol)
    to the output section.  */
 
 static bfd_boolean
-bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection)
-     bfd *ibfd ATTRIBUTE_UNUSED;
-     asection *isection ATTRIBUTE_UNUSED;
-     bfd *obfd ATTRIBUTE_UNUSED;
-     asection *osection ATTRIBUTE_UNUSED;
+bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
+                                         asection *isection ATTRIBUTE_UNUSED,
+                                         bfd *obfd ATTRIBUTE_UNUSED,
+                                         asection *osection ATTRIBUTE_UNUSED)
 {
   return TRUE;
 }
@@ -209,9 +130,7 @@ bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection)
    to the output bfd.  */
 
 static bfd_boolean
-bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd)
-     bfd *ibfd;
-     bfd *obfd;
+bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
 {
   BFD_ASSERT (bfd_mach_o_valid (ibfd));
   BFD_ASSERT (bfd_mach_o_valid (obfd));
@@ -222,8 +141,7 @@ bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd)
 }
 
 static long
-bfd_mach_o_count_symbols (abfd)
-     bfd *abfd;
+bfd_mach_o_count_symbols (bfd *abfd)
 {
   bfd_mach_o_data_struct *mdata = NULL;
   long nsyms = 0;
@@ -243,8 +161,7 @@ bfd_mach_o_count_symbols (abfd)
 }
 
 static long
-bfd_mach_o_get_symtab_upper_bound (abfd)
-     bfd *abfd;
+bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
 {
   long nsyms = bfd_mach_o_count_symbols (abfd);
 
@@ -255,9 +172,7 @@ bfd_mach_o_get_symtab_upper_bound (abfd)
 }
 
 static long
-bfd_mach_o_get_symtab (abfd, alocation)
-     bfd *abfd;
-     asymbol **alocation;
+bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
 {
   bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
   long nsyms = bfd_mach_o_count_symbols (abfd);
@@ -275,7 +190,7 @@ bfd_mach_o_get_symtab (abfd, alocation)
 
          if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
            {
-             fprintf (stderr, "bfd_mach_o_get_symtab: unable to load symbols for section %lu\n", i);
+             fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i);
              return 0;
            }
 
@@ -295,22 +210,24 @@ bfd_mach_o_get_symtab (abfd, alocation)
 }
 
 static void
-bfd_mach_o_get_symbol_info (abfd, symbol, ret)
-     bfd *abfd ATTRIBUTE_UNUSED;
-     asymbol *symbol;
-     symbol_info *ret;
+bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
+                           asymbol *symbol,
+                           symbol_info *ret)
 {
   bfd_symbol_info (symbol, ret);
 }
 
 static void
-bfd_mach_o_print_symbol (abfd, afile, symbol, how)
-     bfd *abfd;
-     PTR afile;
-     asymbol *symbol;
-     bfd_print_symbol_type how;
+bfd_mach_o_print_symbol (bfd *abfd,
+                        PTR afile,
+                        asymbol *symbol,
+                        bfd_print_symbol_type how)
 {
   FILE *file = (FILE *) afile;
+  unsigned char ntype;
+  unsigned char nsect;
+  unsigned int ndesc;
+  const char *name;
 
   switch (how)
     {
@@ -319,16 +236,48 @@ bfd_mach_o_print_symbol (abfd, afile, symbol, how)
       break;
     default:
       bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
-      fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
+      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);
+      else
+       switch (ntype & BFD_MACH_O_N_TYPE)
+         {
+         case BFD_MACH_O_N_UNDF:
+           name = "UND";
+           break;
+         case BFD_MACH_O_N_ABS:
+           name = "ABS";
+           break;
+         case BFD_MACH_O_N_INDR:
+           name = "INDR";
+           break;
+         case BFD_MACH_O_N_PBUD:
+           name = "PBUD";
+           break;
+         case BFD_MACH_O_N_SECT:
+           name = "SECT";
+           break;
+         default:
+           name = "???";
+           break;
+         }
+      if (name == NULL)
+       name = "";
+      fprintf (file, " %02x %-6s %02x %04x", 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, " %s", symbol->name);
     }
 }
 
 static void
-bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype)
-     bfd_mach_o_cpu_type mtype;
-     bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED;
-     enum bfd_architecture *type;
-     unsigned long *subtype;
+bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
+                                bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
+                                enum bfd_architecture *type,
+                                unsigned long *subtype)
 {
   *subtype = bfd_arch_unknown;
 
@@ -336,77 +285,339 @@ bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype)
     {
     case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
     case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
-    case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break;
+    case BFD_MACH_O_CPU_TYPE_I386:
+      *type = bfd_arch_i386;
+      *subtype = bfd_mach_i386_i386;
+      break;
+    case BFD_MACH_O_CPU_TYPE_X86_64:
+      *type = bfd_arch_i386;
+      *subtype = bfd_mach_x86_64;
+      break;
     case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
     case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
     case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
     case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
     case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
-    case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break;
+    case BFD_MACH_O_CPU_TYPE_SPARC:
+      *type = bfd_arch_sparc;
+      *subtype = bfd_mach_sparc;
+      break;
     case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
     case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
-    case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break;
-    default: *type = bfd_arch_unknown; break;
+    case BFD_MACH_O_CPU_TYPE_POWERPC:
+      *type = bfd_arch_powerpc;
+      *subtype = bfd_mach_ppc; 
+      break;
+    case BFD_MACH_O_CPU_TYPE_POWERPC_64:
+      *type = bfd_arch_powerpc;
+      *subtype = bfd_mach_ppc64; 
+      break;
+    default:
+      *type = bfd_arch_unknown;
+      break;
     }
+}
+
+static int
+bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
+{
+  unsigned char buf[32];
+  unsigned int size;
+
+  size = (header->version == 2) ? 32 : 28;
+
+  bfd_h_put_32 (abfd, header->magic, buf + 0);
+  bfd_h_put_32 (abfd, header->cputype, buf + 4);
+  bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
+  bfd_h_put_32 (abfd, header->filetype, buf + 12);
+  bfd_h_put_32 (abfd, header->ncmds, buf + 16);
+  bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
+  bfd_h_put_32 (abfd, header->flags, buf + 24);
+
+  if (header->version == 2)
+    bfd_h_put_32 (abfd, header->reserved, buf + 28);
+
+  bfd_seek (abfd, 0, SEEK_SET);
+  if (bfd_bwrite ((PTR) buf, size, abfd) != size)
+    return -1;
+
+  return 0;
+}
+
+static int
+bfd_mach_o_scan_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;
 
-  switch (*type)
+  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++)
     {
-    case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break;
-    case bfd_arch_sparc: *subtype = bfd_mach_sparc; break;
-    default:
-      *subtype = bfd_arch_unknown;
+      BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
+      BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
+
+      bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
+      bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
+
+      bfd_seek (abfd, command->offset + offset, SEEK_SET);
+      if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
+       return -1;
+
+      offset += cmd->flavours[i].size + 8;
     }
+
+  return 0;
 }
 
-static bfd_boolean
-bfd_mach_o_write_contents (abfd)
-     bfd *abfd;
+static int
+bfd_mach_o_scan_write_section_32 (bfd *abfd,
+                                 bfd_mach_o_section *section,
+                                 bfd_vma offset)
 {
-  unsigned int i;
-  asection *s;
+  unsigned char buf[68];
 
-  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
+  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);
 
-  /* Write data sections first in case they overlap header data to be
-     written later.  */
+  bfd_seek (abfd, offset, SEEK_SET);
+  if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
+    return -1;
 
-  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
-    ;
+  return 0;
+}
 
-#if 0
-  for (i = 0; i < mdata->header.ncmds; i++)
+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;
+
+  return 0;
+}
+
+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);
+}
+
+static int
+bfd_mach_o_scan_write_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;
+
+  if (wide)
     {
-      bfd_mach_o_load_command *cur = &mdata->commands[i];
-      if (cur->type != BFD_MACH_O_LC_SEGMENT)
-       break;
+      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
+    {
+      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;
+    }
 
-      {
-       bfd_mach_o_segment_command *seg = &cur->command.segment;
-       char buf[1024];
-       bfd_vma nbytes = seg->filesize;
-       bfd_vma curoff = seg->fileoff;
+  {
+    char buf[1024];
+    bfd_vma nbytes = seg->filesize;
+    bfd_vma curoff = seg->fileoff;
 
-       while (nbytes > 0)
-         {
-           bfd_vma thisread = nbytes;
+    while (nbytes > 0)
+      {
+       bfd_vma thiswrite = nbytes;
 
-           if (thisread > 1024)
-             thisread = 1024;
+       if (thiswrite > 1024)
+         thiswrite = 1024;
 
-           bfd_seek (abfd, curoff, SEEK_SET);
-           if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
-             return FALSE;
+       bfd_seek (abfd, curoff, SEEK_SET);
+       if (bfd_bread ((PTR) buf, thiswrite, abfd) != thiswrite)
+         return -1;
 
-           bfd_seek (abfd, curoff, SEEK_SET);
-           if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
-             return FALSE;
+       bfd_seek (abfd, curoff, SEEK_SET);
+       if (bfd_bwrite ((PTR) buf, thiswrite, abfd) != thiswrite)
+         return -1;
 
-           nbytes -= thisread;
-           curoff += thisread;
-         }
+       nbytes -= thiswrite;
+       curoff += thiswrite;
       }
   }
-#endif
+
+  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 (bfd_mach_o_scan_write_section
+         (abfd, &seg->sections[i], segoff, wide) != 0)
+       return -1;
+    }
+
+  return 0;
+}
+
+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);
+}
+
+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);
+}
+
+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;
+
+  for (i = 0; i < sym->nsyms; i++)
+    {
+      unsigned char buf[12];
+      bfd_vma symoff = sym->symoff + (i * 12);
+      unsigned char ntype = 0;
+      unsigned char nsect = 0;
+      short ndesc = 0;
+
+      s = &sym->symbols[i];
+
+      /* 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);
+
+      bfd_seek (abfd, symoff, SEEK_SET);
+      if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
+       {
+         fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
+                  12, (unsigned long) symoff);
+         return -1;
+       }
+    }
+
+  return 0;
+}
+
+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];
+
+  BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+
+  bfd_h_put_32 (abfd, seg->symoff, buf);
+  bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
+  bfd_h_put_32 (abfd, seg->stroff, buf + 8);
+  bfd_h_put_32 (abfd, seg->strsize, buf + 12);
+
+  bfd_seek (abfd, command->offset + 8, SEEK_SET);
+  if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
+    return -1;
+
+  if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
+    return -1;
+
+  return 0;
+}
+
+static 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;
+
+  /* Write data sections first in case they overlap header data to be
+     written later.  */
+
+  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+    ;
 
   /* Now write header information.  */
   if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
@@ -430,7 +641,11 @@ bfd_mach_o_write_contents (abfd)
       switch (cur->type)
        {
        case BFD_MACH_O_LC_SEGMENT:
-         if (bfd_mach_o_scan_write_segment (abfd, cur) != 0)
+         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:
@@ -462,7 +677,7 @@ bfd_mach_o_write_contents (abfd)
        default:
          fprintf (stderr,
                   "unable to write unknown load command 0x%lx\n",
-                  (long) cur->type);
+                  (unsigned long) cur->type);
          return FALSE;
        }
     }
@@ -471,9 +686,8 @@ bfd_mach_o_write_contents (abfd)
 }
 
 static int
-bfd_mach_o_sizeof_headers (a, b)
-     bfd *a ATTRIBUTE_UNUSED;
-     bfd_boolean b ATTRIBUTE_UNUSED;
+bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
+                          struct bfd_link_info *info ATTRIBUTE_UNUSED)
 {
   return 0;
 }
@@ -482,12 +696,11 @@ bfd_mach_o_sizeof_headers (a, b)
    bfd_make_section_anyway wants to create a symbol for the section.  */
 
 static asymbol *
-bfd_mach_o_make_empty_symbol (abfd)
-     bfd *abfd;
+bfd_mach_o_make_empty_symbol (bfd *abfd)
 {
   asymbol *new;
 
-  new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+  new = bfd_zalloc (abfd, sizeof (* new));
   if (new == NULL)
     return new;
   new->the_bfd = abfd;
@@ -495,50 +708,44 @@ bfd_mach_o_make_empty_symbol (abfd)
 }
 
 static int
-bfd_mach_o_write_header (abfd, header)
-     bfd *abfd;
-     bfd_mach_o_header *header;
+bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
 {
-  unsigned char buf[28];
-
-  bfd_h_put_32 (abfd, header->magic, buf + 0);
-  bfd_h_put_32 (abfd, header->cputype, buf + 4);
-  bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
-  bfd_h_put_32 (abfd, header->filetype, buf + 12);
-  bfd_h_put_32 (abfd, header->ncmds, buf + 16);
-  bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
-  bfd_h_put_32 (abfd, header->flags, buf + 24);
-
-  bfd_seek (abfd, 0, SEEK_SET);
-  if (bfd_bwrite ((PTR) buf, 28, abfd) != 28)
-    return -1;
-
-  return 0;
-}
-
-static int
-bfd_mach_o_read_header (abfd, header)
-     bfd *abfd;
-     bfd_mach_o_header *header;
-{
-  unsigned char buf[28];
-  bfd_vma (*get32) PARAMS ((const bfd_byte *)) = NULL;
+  unsigned char buf[32];
+  unsigned int size;
+  bfd_vma (*get32) (const void *) = NULL;
 
   bfd_seek (abfd, 0, SEEK_SET);
 
-  if (bfd_bread ((PTR) buf, 28, abfd) != 28)
+  /* Just read the magic number.  */
+  if (bfd_bread ((PTR) buf, 4, abfd) != 4)
     return -1;
 
   if (bfd_getb32 (buf) == 0xfeedface)
     {
       header->byteorder = BFD_ENDIAN_BIG;
       header->magic = 0xfeedface;
+      header->version = 1;
       get32 = bfd_getb32;
     }
   else if (bfd_getl32 (buf) == 0xfeedface)
     {
       header->byteorder = BFD_ENDIAN_LITTLE;
       header->magic = 0xfeedface;
+      header->version = 1;
+      get32 = bfd_getl32;
+    }
+  else if (bfd_getb32 (buf) == 0xfeedfacf)
+    {
+      header->byteorder = BFD_ENDIAN_BIG;
+      header->magic = 0xfeedfacf;
+      header->version = 2;
+      get32 = bfd_getb32;
+    }
+  else if (bfd_getl32 (buf) == 0xfeedfacf)
+    {
+      header->byteorder = BFD_ENDIAN_LITTLE;
+      header->magic = 0xfeedfacf;
+      header->version = 2;
       get32 = bfd_getl32;
     }
   else
@@ -547,6 +754,13 @@ bfd_mach_o_read_header (abfd, header)
       return -1;
     }
 
+  /* Once the size of the header is known, read the full header.  */
+  size = (header->version == 2) ? 32 : 28;
+
+  bfd_seek (abfd, 0, SEEK_SET);
+  if (bfd_bread ((PTR) buf, size, abfd) != size)
+    return -1;
+
   header->cputype = (*get32) (buf + 4);
   header->cpusubtype = (*get32) (buf + 8);
   header->filetype = (*get32) (buf + 12);
@@ -554,51 +768,89 @@ bfd_mach_o_read_header (abfd, header)
   header->sizeofcmds = (*get32) (buf + 20);
   header->flags = (*get32) (buf + 24);
 
+  if (header->version == 2)
+    header->reserved = (*get32) (buf + 28);
+
   return 0;
 }
 
 static asection *
-bfd_mach_o_make_bfd_section (abfd, section)
-     bfd *abfd;
-     bfd_mach_o_section *section;
+bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
+                            unsigned long prot)
 {
   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;
 
-  sname = (char *) bfd_alloc (abfd, snamelen);
+  sname = bfd_alloc (abfd, snamelen);
   if (sname == NULL)
     return NULL;
-  sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
 
-  bfdsec = bfd_make_section_anyway (abfd, sname);
+  /* 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)
+    {
+      if (strcmp (section->sectname, "__eh_frame") == 0)
+       strcpy (sname, ".eh_frame");
+      else if (section->sectname[0])
+       sprintf (sname, "%s.%s", section->segname, section->sectname);
+      else
+       strcpy (sname, section->segname);
+    }
+  else if (strcmp (section->segname, "__DATA") == 0)
+    {
+      if (section->sectname[0])
+       sprintf (sname, "%s.%s", section->segname, section->sectname);
+      else
+       strcpy (sname, section->segname);
+    }
+  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;
+       }
+    }
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
   if (bfdsec == NULL)
     return NULL;
 
   bfdsec->vma = section->addr;
   bfdsec->lma = section->addr;
-  bfdsec->_raw_size = section->size;
+  bfdsec->size = section->size;
   bfdsec->filepos = section->offset;
   bfdsec->alignment_power = section->align;
-
-  if (section->flags & BFD_MACH_O_S_ZEROFILL)
-    bfdsec->flags = SEC_ALLOC;
-  else
-    bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
+  bfdsec->segment_mark = 0;
 
   return bfdsec;
 }
 
 static int
-bfd_mach_o_scan_read_section (abfd, section, offset)
-     bfd *abfd;
-     bfd_mach_o_section *section;
-     bfd_vma offset;
+bfd_mach_o_scan_read_section_32 (bfd *abfd,
+                                bfd_mach_o_section *section,
+                                bfd_vma offset,
+                                unsigned long prot)
 {
   unsigned char buf[68];
 
@@ -619,7 +871,8 @@ bfd_mach_o_scan_read_section (abfd, section, offset)
   section->flags = bfd_h_get_32 (abfd, buf + 56);
   section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
   section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
-  section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section);
+  section->reserved3 = 0;
+  section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
 
   if (section->bfdsection == NULL)
     return -1;
@@ -628,122 +881,89 @@ bfd_mach_o_scan_read_section (abfd, section, offset)
 }
 
 static int
-bfd_mach_o_scan_write_section (abfd, section, offset)
-     bfd *abfd;
-     bfd_mach_o_section *section;
-     bfd_vma offset;
+bfd_mach_o_scan_read_section_64 (bfd *abfd,
+                                bfd_mach_o_section *section,
+                                bfd_vma offset,
+                                unsigned long prot)
 {
-  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); */
+  unsigned char buf[80];
 
   bfd_seek (abfd, offset, SEEK_SET);
-  if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
+  if (bfd_bread ((PTR) buf, 80, abfd) != 80)
+    return -1;
+
+  memcpy (section->sectname, buf, 16);
+  section->sectname[16] = '\0';
+  memcpy (section->segname, buf + 16, 16);
+  section->segname[16] = '\0';
+  section->addr = bfd_h_get_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;
 
   return 0;
 }
 
 static int
-bfd_mach_o_scan_write_symtab_symbols (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_section (bfd *abfd,
+                             bfd_mach_o_section *section,
+                             bfd_vma offset,
+                             unsigned long prot,
+                             unsigned int wide)
 {
-  bfd_mach_o_symtab_command *sym = &command->command.symtab;
-  asymbol *s = NULL;
-  unsigned long i;
-
-  for (i = 0; i < sym->nsyms; i++)
-    {
-      unsigned char buf[12];
-      bfd_vma symoff = sym->symoff + (i * 12);
-      unsigned char ntype = 0;
-      unsigned char nsect = 0;
-      short ndesc = 0;
-
-      s = &sym->symbols[i];
-
-      /* Don't set this from the symbol information; use stored values.  */
-#if 0
-      if (s->flags & BSF_GLOBAL)
-       ntype |= N_EXT;
-      if (s->flags & BSF_DEBUGGING)
-       ntype |= N_STAB;
-
-      if (s->section == bfd_und_section_ptr)
-       ntype |= N_UNDF;
-      else if (s->section == bfd_abs_section_ptr)
-       ntype |= N_ABS;
-      else
-       ntype |= N_SECT;
-#endif
-
-      /* Instead just set from the stored values.  */
-      ntype = (s->udata.i >> 24) & 0xff;
-      nsect = (s->udata.i >> 16) & 0xff;
-      ndesc = s->udata.i & 0xffff;
-
-      bfd_h_put_32 (abfd, s->name - sym->strtab, buf);
-      bfd_h_put_8 (abfd, ntype, buf + 4);
-      bfd_h_put_8 (abfd, nsect, buf + 5);
-      bfd_h_put_16 (abfd, ndesc, buf + 6);
-      bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8);
-
-      bfd_seek (abfd, symoff, SEEK_SET);
-      if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
-       {
-         fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
-                  12, (unsigned long) symoff);
-         return -1;
-       }
-    }
-
-  return 0;
+  if (wide)
+    return bfd_mach_o_scan_read_section_64 (abfd, section, offset, prot);
+  else
+    return bfd_mach_o_scan_read_section_32 (abfd, section, offset, prot);
 }
 
 int
-bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i)
-     bfd *abfd;
-     bfd_mach_o_symtab_command *sym;
-     asymbol *s;
-     unsigned long i;
+bfd_mach_o_scan_read_symtab_symbol (bfd *abfd,
+                                   bfd_mach_o_symtab_command *sym,
+                                   asymbol *s,
+                                   unsigned long i)
 {
   bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
-  bfd_vma symoff = sym->symoff + (i * 12);
-  unsigned char buf[12];
+  unsigned int wide = (mdata->header.version == 2);
+  unsigned int symwidth = wide ? 16 : 12;
+  bfd_vma symoff = sym->symoff + (i * symwidth);
+  unsigned char buf[16];
   unsigned char type = -1;
   unsigned char section = -1;
   short desc = -1;
-  unsigned long value = -1;
+  symvalue value = -1;
   unsigned long stroff = -1;
   unsigned int symtype = -1;
 
   BFD_ASSERT (sym->strtab != NULL);
 
   bfd_seek (abfd, symoff, SEEK_SET);
-  if (bfd_bread ((PTR) buf, 12, abfd) != 12)
+  if (bfd_bread ((PTR) buf, symwidth, abfd) != symwidth)
     {
       fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
-              12, (unsigned long) symoff);
+              symwidth, (unsigned long) symoff);
       return -1;
     }
 
   stroff = bfd_h_get_32 (abfd, buf);
   type = bfd_h_get_8 (abfd, buf + 4);
   symtype = (type & 0x0e);
-  section = bfd_h_get_8 (abfd, buf + 5) - 1;
+  section = bfd_h_get_8 (abfd, buf + 5);
   desc = bfd_h_get_16 (abfd, buf + 6);
-  value = bfd_h_get_32 (abfd, buf + 8);
+  if (wide)
+    value = bfd_h_get_64 (abfd, buf + 8);
+  else
+    value = bfd_h_get_32 (abfd, buf + 8);
 
   if (stroff >= sym->strsize)
     {
@@ -762,20 +982,35 @@ bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i)
     {
       s->flags |= BSF_DEBUGGING;
       s->section = bfd_und_section_ptr;
+      switch (type)
+       {
+       case N_FUN:
+       case N_STSYM:
+       case N_LCSYM:
+       case N_BNSYM:
+       case N_SLINE:
+       case N_ENSYM:
+       case N_ECOMM:
+       case N_ECOML:
+       case N_GSYM:
+         if ((section > 0) && (section <= mdata->nsects))
+           {
+             s->section = mdata->sections[section - 1]->bfdsection;
+             s->value = s->value - mdata->sections[section - 1]->addr;
+           }
+         break;
+       }
     }
   else
     {
       if (type & BFD_MACH_O_N_PEXT)
-       {
-         type &= ~BFD_MACH_O_N_PEXT;
-         s->flags |= BSF_GLOBAL;
-       }
-
+       s->flags |= BSF_GLOBAL;
+      
       if (type & BFD_MACH_O_N_EXT)
-       {
-         type &= ~BFD_MACH_O_N_EXT;
-         s->flags |= BSF_GLOBAL;
-       }
+       s->flags |= BSF_GLOBAL;
+
+      if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
+       s->flags |= BSF_LOCAL;
 
       switch (symtype)
        {
@@ -825,9 +1060,8 @@ bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i)
 }
 
 int
-bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
-     bfd *abfd;
-     bfd_mach_o_symtab_command *sym;
+bfd_mach_o_scan_read_symtab_strtab (bfd *abfd,
+                                   bfd_mach_o_symtab_command *sym)
 {
   BFD_ASSERT (sym->strtab == NULL);
 
@@ -842,7 +1076,7 @@ bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
          bfd_set_error (bfd_error_file_truncated);
          return -1;
        }
-      sym->strtab = b->buffer + sym->stroff;
+      sym->strtab = (char *) b->buffer + sym->stroff;
       return 0;
     }
 
@@ -862,9 +1096,8 @@ bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
 }
 
 int
-bfd_mach_o_scan_read_symtab_symbols (abfd, sym)
-     bfd *abfd;
-     bfd_mach_o_symtab_command *sym;
+bfd_mach_o_scan_read_symtab_symbols (bfd *abfd,
+                                    bfd_mach_o_symtab_command *sym)
 {
   unsigned long i;
   int ret;
@@ -893,12 +1126,11 @@ bfd_mach_o_scan_read_symtab_symbols (abfd, sym)
 }
 
 int
-bfd_mach_o_scan_read_dysymtab_symbol (abfd, dysym, sym, s, i)
-     bfd *abfd;
-     bfd_mach_o_dysymtab_command *dysym;
-     bfd_mach_o_symtab_command *sym;
-     asymbol *s;
-     unsigned long i;
+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;
@@ -908,90 +1140,54 @@ bfd_mach_o_scan_read_dysymtab_symbol (abfd, dysym, sym, s, i)
 
   bfd_seek (abfd, isymoff, SEEK_SET);
   if (bfd_bread ((PTR) buf, 4, abfd) != 4)
-    {
-      fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
-              (unsigned long) 4, isymoff);
-      return -1;
-    }
-  symindex = bfd_h_get_32 (abfd, buf);
-
-  return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
-}
-
-static const char *
-bfd_mach_o_i386_flavour_string (flavour)
-     unsigned int flavour;
-{
-  switch ((int) flavour)
-    {
-    case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE";
-    case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE";
-    case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE";
-    case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE";
-    case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE";
-    case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE";
-    case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE";
-    case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE";
-    case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE";
-    case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE";
-    case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE";
-    case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE";
-    default: return "UNKNOWN";
-    }
-}
-
-static const char *
-bfd_mach_o_ppc_flavour_string (flavour)
-     unsigned int flavour;
-{
-  switch ((int) flavour)
-    {
-    case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
-    case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
-    case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
-    case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
-    default: return "UNKNOWN";
-    }
-}
-
-static int
-bfd_mach_o_scan_write_thread (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
-{
-  bfd_mach_o_thread_command *cmd = &command->command.thread;
-  unsigned int i;
-  unsigned char buf[8];
-  bfd_vma offset;
-  unsigned int nflavours;
-
-  BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
-             || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
-
-  offset = 8;
-  nflavours = 0;
-  for (i = 0; i < cmd->nflavours; i++)
-    {
-      BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
-      BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
-
-      bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
-      bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
+    {
+      fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
+              (unsigned long) 4, isymoff);
+      return -1;
+    }
+  symindex = bfd_h_get_32 (abfd, buf);
 
-      bfd_seek (abfd, command->offset + offset, SEEK_SET);
-      if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
-       return -1;
+  return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
+}
 
-      offset += cmd->flavours[i].size + 8;
+static const char *
+bfd_mach_o_i386_flavour_string (unsigned int flavour)
+{
+  switch ((int) flavour)
+    {
+    case BFD_MACH_O_x86_THREAD_STATE32:    return "x86_THREAD_STATE32";
+    case BFD_MACH_O_x86_FLOAT_STATE32:     return "x86_FLOAT_STATE32";
+    case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
+    case BFD_MACH_O_x86_THREAD_STATE64:    return "x86_THREAD_STATE64";
+    case BFD_MACH_O_x86_FLOAT_STATE64:     return "x86_FLOAT_STATE64";
+    case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
+    case BFD_MACH_O_x86_THREAD_STATE:      return "x86_THREAD_STATE";
+    case BFD_MACH_O_x86_FLOAT_STATE:       return "x86_FLOAT_STATE";
+    case BFD_MACH_O_x86_EXCEPTION_STATE:   return "x86_EXCEPTION_STATE";
+    case BFD_MACH_O_x86_DEBUG_STATE32:     return "x86_DEBUG_STATE32";
+    case BFD_MACH_O_x86_DEBUG_STATE64:     return "x86_DEBUG_STATE64";
+    case BFD_MACH_O_x86_DEBUG_STATE:       return "x86_DEBUG_STATE";
+    case BFD_MACH_O_THREAD_STATE_NONE:     return "THREAD_STATE_NONE";
+    default: return "UNKNOWN";
     }
+}
 
-  return 0;
+static const char *
+bfd_mach_o_ppc_flavour_string (unsigned int flavour)
+{
+  switch ((int) flavour)
+    {
+    case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
+    case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
+    case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
+    case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
+    default: return "UNKNOWN";
+    }
 }
 
 static int
-bfd_mach_o_scan_read_dylinker (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_dylinker (bfd *abfd,
+                              bfd_mach_o_load_command *command)
 {
   bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
   unsigned char buf[4];
@@ -1019,21 +1215,20 @@ bfd_mach_o_scan_read_dylinker (abfd, command)
   else
     abort ();
 
-  sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
+  sname = bfd_alloc (abfd, strlen (prefix) + 1);
   if (sname == NULL)
     return -1;
   strcpy (sname, prefix);
 
-  bfdsec = bfd_make_section_anyway (abfd, sname);
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
   if (bfdsec == NULL)
     return -1;
 
   bfdsec->vma = 0;
   bfdsec->lma = 0;
-  bfdsec->_raw_size = command->len - 8;
-  bfdsec->filepos = command->offset + 8;
+  bfdsec->size = command->len - nameoff;
+  bfdsec->filepos = command->offset + nameoff;
   bfdsec->alignment_power = 0;
-  bfdsec->flags = SEC_HAS_CONTENTS;
 
   cmd->section = bfdsec;
 
@@ -1041,9 +1236,7 @@ bfd_mach_o_scan_read_dylinker (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_read_dylib (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
 {
   bfd_mach_o_dylib_command *cmd = &command->command.dylib;
   unsigned char buf[16];
@@ -1077,21 +1270,20 @@ bfd_mach_o_scan_read_dylib (abfd, command)
   else
     abort ();
 
-  sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
+  sname = bfd_alloc (abfd, strlen (prefix) + 1);
   if (sname == NULL)
     return -1;
   strcpy (sname, prefix);
 
-  bfdsec = bfd_make_section_anyway (abfd, sname);
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
   if (bfdsec == NULL)
     return -1;
 
   bfdsec->vma = 0;
   bfdsec->lma = 0;
-  bfdsec->_raw_size = command->len - 8;
+  bfdsec->size = command->len - 8;
   bfdsec->filepos = command->offset + 8;
   bfdsec->alignment_power = 0;
-  bfdsec->flags = SEC_HAS_CONTENTS;
 
   cmd->section = bfdsec;
 
@@ -1099,9 +1291,8 @@ bfd_mach_o_scan_read_dylib (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_read_prebound_dylib (abfd, command)
-     bfd *abfd ATTRIBUTE_UNUSED;
-     bfd_mach_o_load_command *command ATTRIBUTE_UNUSED;
+bfd_mach_o_scan_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; */
 
@@ -1110,9 +1301,7 @@ bfd_mach_o_scan_read_prebound_dylib (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_read_thread (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
 {
   bfd_mach_o_data_struct *mdata = NULL;
   bfd_mach_o_thread_command *cmd = &command->command.thread;
@@ -1143,9 +1332,7 @@ bfd_mach_o_scan_read_thread (abfd, command)
       nflavours++;
     }
 
-  cmd->flavours =
-    ((bfd_mach_o_thread_flavour *)
-     bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)));
+  cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
   if (cmd->flavours == NULL)
     return -1;
   cmd->nflavours = nflavours;
@@ -1184,9 +1371,11 @@ bfd_mach_o_scan_read_thread (abfd, command)
       switch (mdata->header.cputype)
        {
        case BFD_MACH_O_CPU_TYPE_POWERPC:
+       case BFD_MACH_O_CPU_TYPE_POWERPC_64:
          flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
          break;
        case BFD_MACH_O_CPU_TYPE_I386:
+       case BFD_MACH_O_CPU_TYPE_X86_64:
          flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
          break;
        default:
@@ -1195,7 +1384,7 @@ bfd_mach_o_scan_read_thread (abfd, command)
        }
 
       snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
-      sname = (char *) bfd_alloc (abfd, snamelen);
+      sname = bfd_alloc (abfd, snamelen);
       if (sname == NULL)
        return -1;
 
@@ -1207,14 +1396,13 @@ bfd_mach_o_scan_read_thread (abfd, command)
          j++;
        }
 
-      bfdsec = bfd_make_section (abfd, sname);
+      bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
 
       bfdsec->vma = 0;
       bfdsec->lma = 0;
-      bfdsec->_raw_size = cmd->flavours[i].size;
+      bfdsec->size = cmd->flavours[i].size;
       bfdsec->filepos = cmd->flavours[i].offset;
       bfdsec->alignment_power = 0x0;
-      bfdsec->flags = SEC_HAS_CONTENTS;
 
       cmd->section = bfdsec;
     }
@@ -1223,34 +1411,7 @@ bfd_mach_o_scan_read_thread (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_write_symtab (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
-{
-  bfd_mach_o_symtab_command *seg = &command->command.symtab;
-  unsigned char buf[16];
-
-  BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
-
-  bfd_h_put_32 (abfd, seg->symoff, buf);
-  bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
-  bfd_h_put_32 (abfd, seg->stroff, buf + 8);
-  bfd_h_put_32 (abfd, seg->strsize, buf + 12);
-
-  bfd_seek (abfd, command->offset + 8, SEEK_SET);
-  if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
-    return -1;
-
-  if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
-    return -1;
-
-  return 0;
-}
-
-static int
-bfd_mach_o_scan_read_dysymtab (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
 {
   bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
   unsigned char buf[72];
@@ -1284,15 +1445,14 @@ bfd_mach_o_scan_read_dysymtab (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_read_symtab (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_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_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
 
@@ -1307,40 +1467,41 @@ bfd_mach_o_scan_read_symtab (abfd, command)
   seg->symbols = NULL;
   seg->strtab = NULL;
 
-  sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
+  sname = bfd_alloc (abfd, strlen (prefix) + 1);
   if (sname == NULL)
     return -1;
   strcpy (sname, prefix);
 
-  bfdsec = bfd_make_section_anyway (abfd, sname);
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
   if (bfdsec == NULL)
     return -1;
 
   bfdsec->vma = 0;
   bfdsec->lma = 0;
-  bfdsec->_raw_size = seg->nsyms * 12;
+  bfdsec->size = seg->nsyms * nlist_size;
   bfdsec->filepos = seg->symoff;
   bfdsec->alignment_power = 0;
-  bfdsec->flags = SEC_HAS_CONTENTS;
 
   seg->stabs_segment = bfdsec;
 
+  if (seg->nsyms != 0)
+    abfd->flags |= HAS_SYMS;
+
   prefix = "LC_SYMTAB.stabstr";
-  sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
+  sname = bfd_alloc (abfd, strlen (prefix) + 1);
   if (sname == NULL)
     return -1;
   strcpy (sname, prefix);
 
-  bfdsec = bfd_make_section_anyway (abfd, sname);
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
   if (bfdsec == NULL)
     return -1;
 
   bfdsec->vma = 0;
   bfdsec->lma = 0;
-  bfdsec->_raw_size = seg->strsize;
+  bfdsec->size = seg->strsize;
   bfdsec->filepos = seg->stroff;
   bfdsec->alignment_power = 0;
-  bfdsec->flags = SEC_HAS_CONTENTS;
 
   seg->stabstr_segment = bfdsec;
 
@@ -1348,11 +1509,45 @@ bfd_mach_o_scan_read_symtab (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_read_segment (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_uuid (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_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)
+    return -1;
+
+  sname = bfd_alloc (abfd, strlen (prefix) + 1);
+  if (sname == NULL)
+    return -1;
+  strcpy (sname, prefix);
+
+  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
+  if (bfdsec == NULL)
+    return -1;
+
+  bfdsec->vma = 0;
+  bfdsec->lma = 0;
+  bfdsec->size = command->len - 8;
+  bfdsec->filepos = command->offset + 8;
+  bfdsec->alignment_power = 0;
+
+  cmd->section = bfdsec;
+
+  return 0;
+}
+
+static int
+bfd_mach_o_scan_read_segment (bfd *abfd,
+                             bfd_mach_o_load_command *command,
+                             unsigned int wide)
 {
-  unsigned char buf[48];
+  unsigned char buf[64];
   bfd_mach_o_segment_command *seg = &command->command.segment;
   unsigned long i;
   asection *bfdsec;
@@ -1360,27 +1555,58 @@ bfd_mach_o_scan_read_segment (abfd, command)
   const char *prefix = "LC_SEGMENT";
   unsigned int snamelen;
 
-  BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+  if (wide)
+    {
+      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;
 
-  bfd_seek (abfd, command->offset + 8, SEEK_SET);
-  if (bfd_bread ((PTR) buf, 48, abfd) != 48)
-    return -1;
+      memcpy (seg->segname, buf, 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);
+    }
+  else
+    {
+      BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
+
+      bfd_seek (abfd, command->offset + 8, SEEK_SET);
+      if (bfd_bread ((PTR) buf, 48, abfd) != 48)
+       return -1;
 
-  memcpy (seg->segname, buf, 16);
-  seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
-  seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
-  seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
-  seg->filesize = bfd_h_get_32 (abfd, buf +  28);
-  /* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */
-  /* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */
-  seg->nsects = bfd_h_get_32 (abfd, buf + 40);
-  seg->flags = bfd_h_get_32 (abfd, buf + 44);
+      memcpy (seg->segname, buf, 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);
+    }
 
   snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1;
-  sname = (char *) bfd_alloc (abfd, snamelen);
+  sname = bfd_alloc (abfd, snamelen);
   if (sname == NULL)
     return -1;
-  sprintf (sname, "%s.%s", prefix, seg->segname);
+  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)
@@ -1388,27 +1614,30 @@ bfd_mach_o_scan_read_segment (abfd, command)
 
   bfdsec->vma = seg->vmaddr;
   bfdsec->lma = seg->vmaddr;
-  bfdsec->_raw_size = seg->filesize;
+  bfdsec->size = seg->filesize;
   bfdsec->filepos = seg->fileoff;
   bfdsec->alignment_power = 0x0;
-  bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
+  bfdsec->flags = SEC_HAS_CONTENTS;
+  bfdsec->segment_mark = 1;
 
   seg->segment = bfdsec;
 
   if (seg->nsects != 0)
     {
-      seg->sections =
-       ((bfd_mach_o_section *)
-        bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)));
+      seg->sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
       if (seg->sections == NULL)
        return -1;
 
       for (i = 0; i < seg->nsects; i++)
        {
-         bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
+         bfd_vma segoff;
+         if (wide)
+           segoff = command->offset + 64 + 8 + (i * 80);
+         else
+           segoff = command->offset + 48 + 8 + (i * 68);
 
-         if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i],
-                                           segoff) != 0)
+         if (bfd_mach_o_scan_read_section
+             (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
            return -1;
        }
     }
@@ -1417,70 +1646,19 @@ bfd_mach_o_scan_read_segment (abfd, command)
 }
 
 static int
-bfd_mach_o_scan_write_segment (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
 {
-  unsigned char buf[48];
-  bfd_mach_o_segment_command *seg = &command->command.segment;
-  unsigned long i;
-
-  BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
-
-  memcpy (buf, seg->segname, 16);
-  bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
-  bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
-  bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
-  bfd_h_put_32 (abfd, seg->filesize, buf + 28);
-  bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32);
-  bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36);
-  bfd_h_put_32 (abfd, seg->nsects, buf + 40);
-  bfd_h_put_32 (abfd, seg->flags, buf + 44);
-
-  bfd_seek (abfd, command->offset + 8, SEEK_SET);
-  if (bfd_bwrite ((PTR) buf, 48, abfd) != 48)
-    return -1;
-
-  {
-    char buf[1024];
-    bfd_vma nbytes = seg->filesize;
-    bfd_vma curoff = seg->fileoff;
-
-    while (nbytes > 0)
-      {
-       bfd_vma thisread = nbytes;
-
-       if (thisread > 1024)
-         thisread = 1024;
-
-       bfd_seek (abfd, curoff, SEEK_SET);
-       if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
-         return -1;
-
-       bfd_seek (abfd, curoff, SEEK_SET);
-       if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
-         return -1;
-
-       nbytes -= thisread;
-       curoff += thisread;
-      }
-  }
-
-  for (i = 0; i < seg->nsects; i++)
-    {
-      bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
-
-      if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
-       return -1;
-    }
+  return bfd_mach_o_scan_read_segment (abfd, command, 0);
+}
 
-  return 0;
+static int
+bfd_mach_o_scan_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+  return bfd_mach_o_scan_read_segment (abfd, command, 1);
 }
 
 static int
-bfd_mach_o_scan_read_command (abfd, command)
-     bfd *abfd;
-     bfd_mach_o_load_command *command;
+bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command)
 {
   unsigned char buf[8];
 
@@ -1496,7 +1674,11 @@ bfd_mach_o_scan_read_command (abfd, command)
   switch (command->type)
     {
     case BFD_MACH_O_LC_SEGMENT:
-      if (bfd_mach_o_scan_read_segment (abfd, command) != 0)
+      if (bfd_mach_o_scan_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)
        return -1;
       break;
     case BFD_MACH_O_LC_SYMTAB:
@@ -1543,6 +1725,14 @@ bfd_mach_o_scan_read_command (abfd, command)
     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)
+       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:
+      break;
     default:
       fprintf (stderr, "unable to read unknown load command 0x%lx\n",
               (unsigned long) command->type);
@@ -1553,18 +1743,19 @@ bfd_mach_o_scan_read_command (abfd, command)
 }
 
 static void
-bfd_mach_o_flatten_sections (abfd)
-     bfd *abfd;
+bfd_mach_o_flatten_sections (bfd *abfd)
 {
   bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
   long csect = 0;
   unsigned long i, j;
 
+  /* Count total number of sections.  */
   mdata->nsects = 0;
 
   for (i = 0; i < mdata->header.ncmds; i++)
     {
-      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
+      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
+         || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
        {
          bfd_mach_o_segment_command *seg;
 
@@ -1573,13 +1764,17 @@ bfd_mach_o_flatten_sections (abfd)
        }
     }
 
+  /* Allocate sections array.  */
   mdata->sections = bfd_alloc (abfd,
                               mdata->nsects * sizeof (bfd_mach_o_section *));
+
+  /* Fill the array.  */
   csect = 0;
 
   for (i = 0; i < mdata->header.ncmds; i++)
     {
-      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
+      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
+         || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
        {
          bfd_mach_o_segment_command *seg;
 
@@ -1593,8 +1788,7 @@ bfd_mach_o_flatten_sections (abfd)
 }
 
 int
-bfd_mach_o_scan_start_address (abfd)
-     bfd *abfd;
+bfd_mach_o_scan_start_address (bfd *abfd)
 {
   bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
   bfd_mach_o_thread_command *cmd = NULL;
@@ -1619,7 +1813,7 @@ bfd_mach_o_scan_start_address (abfd)
     {
       if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
          && (cmd->flavours[i].flavour
-             == (unsigned long) BFD_MACH_O_i386_THREAD_STATE))
+             == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
        {
          unsigned char buf[4];
 
@@ -1642,26 +1836,65 @@ bfd_mach_o_scan_start_address (abfd)
 
          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))
+        {
+          unsigned char buf[8];
+
+          bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
+
+          if (bfd_bread (buf, 8, abfd) != 8)
+            return -1;
+
+          abfd->start_address = bfd_h_get_64 (abfd, buf);
+        }
+      else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
+               && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
+        {
+          unsigned char buf[8];
+
+          bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET);
+
+          if (bfd_bread (buf, 8, abfd) != 8)
+            return -1;
+
+          abfd->start_address = bfd_h_get_64 (abfd, buf);
+        }
     }
 
   return 0;
 }
 
 int
-bfd_mach_o_scan (abfd, header, mdata)
-     bfd *abfd;
-     bfd_mach_o_header *header;
-     bfd_mach_o_data_struct *mdata;
+bfd_mach_o_scan (bfd *abfd,
+                bfd_mach_o_header *header,
+                bfd_mach_o_data_struct *mdata)
 {
   unsigned int i;
   enum bfd_architecture cputype;
   unsigned long cpusubtype;
+  unsigned int hdrsize;
+
+  hdrsize = (header->version == 2) ? 32 : 28;
 
   mdata->header = *header;
   mdata->symbols = NULL;
 
-  abfd->flags = (abfd->xvec->object_flags
-                | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS)));
+  abfd->flags = abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS);
+  switch (header->filetype)
+    {
+    case BFD_MACH_O_MH_OBJECT:
+      abfd->flags |= HAS_RELOC;
+      break;
+    case BFD_MACH_O_MH_EXECUTE:
+      abfd->flags |= EXEC_P;
+      break;
+    case BFD_MACH_O_MH_DYLIB:
+    case BFD_MACH_O_MH_BUNDLE:
+      abfd->flags |= DYNAMIC;
+      break;
+    }
+
   abfd->tdata.mach_o_data = mdata;
 
   bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
@@ -1677,9 +1910,7 @@ bfd_mach_o_scan (abfd, header, mdata)
 
   if (header->ncmds != 0)
     {
-      mdata->commands =
-       ((bfd_mach_o_load_command *)
-        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;
 
@@ -1688,7 +1919,7 @@ bfd_mach_o_scan (abfd, header, mdata)
          bfd_mach_o_load_command *cur = &mdata->commands[i];
 
          if (i == 0)
-           cur->offset = 28;
+           cur->offset = hdrsize;
          else
            {
              bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
@@ -1701,28 +1932,18 @@ bfd_mach_o_scan (abfd, header, mdata)
     }
 
   if (bfd_mach_o_scan_start_address (abfd) < 0)
-    {
-#if 0
-      fprintf (stderr, "bfd_mach_o_scan: unable to scan start address: %s\n",
-              bfd_errmsg (bfd_get_error ()));
-      abfd->tdata.mach_o_data = NULL;
-      return -1;
-#endif
-    }
+    return -1;
 
   bfd_mach_o_flatten_sections (abfd);
-
   return 0;
 }
 
 bfd_boolean
-bfd_mach_o_mkobject (abfd)
-     bfd *abfd;
+bfd_mach_o_mkobject (bfd *abfd)
 {
   bfd_mach_o_data_struct *mdata = NULL;
 
-  mdata = ((bfd_mach_o_data_struct *)
-          bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
+  mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
   if (mdata == NULL)
     return FALSE;
   abfd->tdata.mach_o_data = mdata;
@@ -1746,8 +1967,7 @@ bfd_mach_o_mkobject (abfd)
 }
 
 const bfd_target *
-bfd_mach_o_object_p (abfd)
-     bfd *abfd;
+bfd_mach_o_object_p (bfd *abfd)
 {
   struct bfd_preserve preserve;
   bfd_mach_o_header header;
@@ -1760,7 +1980,7 @@ bfd_mach_o_object_p (abfd)
         || header.byteorder == BFD_ENDIAN_LITTLE))
     {
       fprintf (stderr, "unknown header byte-order value 0x%lx\n",
-              (long) header.byteorder);
+              (unsigned long) header.byteorder);
       goto wrong;
     }
 
@@ -1794,8 +2014,7 @@ bfd_mach_o_object_p (abfd)
 }
 
 const bfd_target *
-bfd_mach_o_core_p (abfd)
-     bfd *abfd;
+bfd_mach_o_core_p (bfd *abfd)
 {
   struct bfd_preserve preserve;
   bfd_mach_o_header header;
@@ -1808,7 +2027,7 @@ bfd_mach_o_core_p (abfd)
         || header.byteorder == BFD_ENDIAN_LITTLE))
     {
       fprintf (stderr, "unknown header byte-order value 0x%lx\n",
-              (long) header.byteorder);
+              (unsigned long) header.byteorder);
       abort ();
     }
 
@@ -1851,7 +2070,6 @@ typedef struct mach_o_fat_archentry
   unsigned long offset;
   unsigned long size;
   unsigned long align;
-  bfd *abfd;
 } mach_o_fat_archentry;
 
 typedef struct mach_o_fat_data_struct
@@ -1862,8 +2080,7 @@ typedef struct mach_o_fat_data_struct
 } mach_o_fat_data_struct;
 
 const bfd_target *
-bfd_mach_o_archive_p (abfd)
-     bfd *abfd;
+bfd_mach_o_archive_p (bfd *abfd)
 {
   mach_o_fat_data_struct *adata = NULL;
   unsigned char buf[20];
@@ -1873,8 +2090,7 @@ bfd_mach_o_archive_p (abfd)
   if (bfd_bread ((PTR) buf, 8, abfd) != 8)
     goto error;
 
-  adata = (mach_o_fat_data_struct *)
-    bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
+  adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
   if (adata == NULL)
     goto error;
 
@@ -1882,8 +2098,13 @@ bfd_mach_o_archive_p (abfd)
   adata->nfat_arch = bfd_getb32 (buf + 4);
   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 = (mach_o_fat_archentry *)
+  adata->archentries = 
     bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
   if (adata->archentries == NULL)
     goto error;
@@ -1899,7 +2120,6 @@ bfd_mach_o_archive_p (abfd)
       adata->archentries[i].offset = bfd_getb32 (buf + 8);
       adata->archentries[i].size = bfd_getb32 (buf + 12);
       adata->archentries[i].align = bfd_getb32 (buf + 16);
-      adata->archentries[i].abfd = NULL;
     }
 
   abfd->tdata.mach_o_fat_data = adata;
@@ -1913,13 +2133,14 @@ bfd_mach_o_archive_p (abfd)
 }
 
 bfd *
-bfd_mach_o_openr_next_archived_file (archive, prev)
-  bfd *archive;
-  bfd *prev;
+bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
 {
   mach_o_fat_data_struct *adata;
   mach_o_fat_archentry *entry = NULL;
   unsigned long i;
+  bfd *nbfd;
+  enum bfd_architecture arch_type;
+  unsigned long arch_subtype;
 
   adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
   BFD_ASSERT (adata != NULL);
@@ -1931,7 +2152,7 @@ bfd_mach_o_openr_next_archived_file (archive, prev)
     {
       for (i = 0; i < adata->nfat_arch; i++)
        {
-         if (adata->archentries[i].abfd == prev)
+         if (adata->archentries[i].offset == prev->origin)
            break;
        }
 
@@ -1951,33 +2172,102 @@ bfd_mach_o_openr_next_archived_file (archive, prev)
     }
 
   entry = &adata->archentries[i];
-  if (entry->abfd == NULL)
+  nbfd = _bfd_new_bfd_contained_in (archive);
+  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_set_arch_mach (nbfd, arch_type, arch_subtype);
+
+  return nbfd;
+}
+
+/* If ABFD format is FORMAT and architecture is ARCH, return it.
+   If ABFD is a fat image containing a member that corresponds to FORMAT
+   and ARCH, returns it.
+   In other case, returns NULL.
+   This function allows transparent uses of fat images.  */
+bfd *
+bfd_mach_o_fat_extract (bfd *abfd,
+                       bfd_format format,
+                       const bfd_arch_info_type *arch)
+{
+  bfd *res;
+  mach_o_fat_data_struct *adata;
+  unsigned int i;
+
+  if (bfd_check_format (abfd, format))
     {
-      bfd *nbfd = _bfd_new_bfd_contained_in (archive);
-      char *s = NULL;
+      if (bfd_get_arch_info (abfd) == arch)
+       return abfd;
+      return NULL;
+    }
+  if (!bfd_check_format (abfd, bfd_archive)
+      || abfd->xvec != &mach_o_fat_vec)
+    return NULL;
+  
+  /* This is a Mach-O fat image.  */
+  adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
+  BFD_ASSERT (adata != NULL);
 
-      if (nbfd == NULL)
-       return NULL;
+  for (i = 0; i < adata->nfat_arch; i++)
+    {
+      struct mach_o_fat_archentry *e = &adata->archentries[i];
+      enum bfd_architecture cpu_type;
+      unsigned long cpu_subtype;
 
-      nbfd->origin = entry->offset;
-      s = bfd_malloc (strlen (archive->filename) + 1);
-      if (s == NULL)
+      bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
+                                      &cpu_type, &cpu_subtype);
+      if (cpu_type != arch->arch || cpu_subtype != arch->mach)
+       continue;
+
+      /* The architecture is found.  */
+      res = _bfd_new_bfd_contained_in (abfd);
+      if (res == NULL)
        return NULL;
-      strcpy (s, archive->filename);
-      nbfd->filename = s;
-      nbfd->iostream = NULL;
-      entry->abfd = nbfd;
+
+      res->origin = e->offset;
+
+      res->filename = strdup (abfd->filename);
+      res->iostream = NULL;
+
+      if (bfd_check_format (res, format))
+       {
+         BFD_ASSERT (bfd_get_arch_info (res) == arch);
+         return res;
+       }
+      bfd_close (res);
+      return NULL;
     }
 
-  return entry->abfd;
+  return NULL;
 }
 
 int
-bfd_mach_o_lookup_section (abfd, section, mcommand, msection)
-     bfd *abfd;
-     asection *section;
-     bfd_mach_o_load_command **mcommand;
-     bfd_mach_o_section **msection;
+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;
@@ -1994,7 +2284,8 @@ bfd_mach_o_lookup_section (abfd, section, mcommand, msection)
       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)
+      if (cmd->type != BFD_MACH_O_LC_SEGMENT
+         || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
        continue;
       seg = &cmd->command.segment;
 
@@ -2024,10 +2315,9 @@ bfd_mach_o_lookup_section (abfd, section, mcommand, msection)
 }
 
 int
-bfd_mach_o_lookup_command (abfd, type, mcommand)
-     bfd *abfd;
-     bfd_mach_o_load_command_type type;
-     bfd_mach_o_load_command **mcommand;
+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;
   bfd_mach_o_load_command *ncmd = NULL;
@@ -2056,8 +2346,7 @@ bfd_mach_o_lookup_command (abfd, type, mcommand)
 }
 
 unsigned long
-bfd_mach_o_stack_addr (type)
-     enum bfd_mach_o_cpu_type type;
+bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
 {
   switch (type)
     {
@@ -2080,11 +2369,151 @@ bfd_mach_o_stack_addr (type)
     }
 }
 
+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);
+       }
+    }
+
+  for (i = 0; i < mdata->header.ncmds; i++)
+    {
+      bfd_mach_o_load_command *cmd = &mdata->commands[i];
+
+      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;
+
+           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;
+
+           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;
+       }
+    }
+
+  return TRUE;
+}
+
 int
-bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
-     bfd *abfd;
-     unsigned char **rbuf;
-     unsigned int *rlen;
+bfd_mach_o_core_fetch_environment (bfd *abfd,
+                                  unsigned char **rbuf,
+                                  unsigned int *rlen)
 {
   bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
   unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
@@ -2116,13 +2545,18 @@ bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
              if (size > (end - start))
                size = (end - start);
 
-             buf = bfd_realloc (buf, size);
-
+             buf = bfd_realloc_or_free (buf, size);
+             if (buf == NULL)
+               return -1;
+             
              bfd_seek (abfd, end - size, SEEK_SET);
              nread = bfd_bread (buf, size, abfd);
 
              if (nread != size)
-               return -1;
+               {
+                 free (buf);
+                 return -1;
+               }
 
              for (offset = 4; offset <= size; offset += 4)
                {
@@ -2145,6 +2579,7 @@ bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
                      *rlen = top - bottom;
 
                      memcpy (*rbuf, buf + size - *rlen, *rlen);
+                     free (buf);
                      return 0;
                    }
                }
@@ -2154,6 +2589,8 @@ bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
 
              size *= 2;
            }
+
+         free (buf);
        }
     }
 
@@ -2161,8 +2598,7 @@ bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
 }
 
 char *
-bfd_mach_o_core_file_failing_command (abfd)
-     bfd *abfd;
+bfd_mach_o_core_file_failing_command (bfd *abfd)
 {
   unsigned char *buf = NULL;
   unsigned int len = 0;
@@ -2172,28 +2608,19 @@ bfd_mach_o_core_file_failing_command (abfd)
   if (ret < 0)
     return NULL;
 
-  return buf;
+  return (char *) buf;
 }
 
 int
-bfd_mach_o_core_file_failing_signal (abfd)
-     bfd *abfd ATTRIBUTE_UNUSED;
+bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
 {
   return 0;
 }
 
-bfd_boolean
-bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
-     bfd *core_bfd ATTRIBUTE_UNUSED;
-     bfd *exec_bfd ATTRIBUTE_UNUSED;
-{
-  return TRUE;
-}
-
-#define TARGET_NAME mach_o_be_vec
-#define TARGET_STRING "mach-o-be"
-#define TARGET_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 0
+#define TARGET_NAME            mach_o_be_vec
+#define TARGET_STRING          "mach-o-be"
+#define TARGET_BIG_ENDIAN      1
+#define TARGET_ARCHIVE                 0
 
 #include "mach-o-target.c"
 
@@ -2202,10 +2629,10 @@ bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
 #undef TARGET_BIG_ENDIAN
 #undef TARGET_ARCHIVE
 
-#define TARGET_NAME mach_o_le_vec
-#define TARGET_STRING "mach-o-le"
-#define TARGET_BIG_ENDIAN 0
-#define TARGET_ARCHIVE 0
+#define TARGET_NAME            mach_o_le_vec
+#define TARGET_STRING          "mach-o-le"
+#define TARGET_BIG_ENDIAN      0
+#define TARGET_ARCHIVE                 0
 
 #include "mach-o-target.c"
 
@@ -2214,10 +2641,10 @@ bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
 #undef TARGET_BIG_ENDIAN
 #undef TARGET_ARCHIVE
 
-#define TARGET_NAME mach_o_fat_vec
-#define TARGET_STRING "mach-o-fat"
-#define TARGET_BIG_ENDIAN 1
-#define TARGET_ARCHIVE 1
+#define TARGET_NAME            mach_o_fat_vec
+#define TARGET_STRING          "mach-o-fat"
+#define TARGET_BIG_ENDIAN      1
+#define TARGET_ARCHIVE                 1
 
 #include "mach-o-target.c"
 
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