bfd/newsos3.c

   1 /*** bfd backend for NewsOS3 (Sony, 68k) binaries */
   2
   3 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
   4
   5 This file is part of BFD, the Binary File Diddler.
   6
   7 BFD is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 1, or (at your option)
  10 any later version.
  11
  12 BFD is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with BFD; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #define TARGET_BYTE_ORDER_BIG_P 1
  22
  23 #include <ansidecl.h>
  24 #include "sysdep.h"
  25 #include "bfd.h"
  26 #include "libbfd.h"
  27
  28 int vfprintf(file, format, args) /* Temporary crock! */
  29      FILE *file; char *format; char *args;
  30 {
  31     return _doprnt (format, args, file);
  32 }
  33
  34 #define PAGE_SIZE       4096
  35 #define SEGMENT_SIZE    0x2000          /* FIXME, is this right?? */
  36 #define TEXT_START_ADDR PAGE_SIZE
  37
  38 #include "a.out.gnu.h"
  39 #include "stab.gnu.h"
  40 #include "ar.h"
  41 #include "liba.out.h"           /* BFD a.out internal data structures */
  42
  43 bfd_target *newsos3_callback ();
  44
  45 bfd_target *
  46 newsos3_object_p (abfd)
  47      bfd *abfd;
  48 {
  49   unsigned char magicbuf[LONG_SIZE]; /* Raw bytes of magic number from file */
  50   unsigned long magic;          /* Swapped magic number */
  51
  52   bfd_error = system_call_error;
  53
  54   if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) !=
  55       sizeof (magicbuf))
  56     return 0;
  57   magic = bfd_h_getlong (abfd, magicbuf);
  58
  59   if (N_BADMAG (*((struct exec *) &magic))) return 0;
  60
  61   return some_aout_object_p (abfd, newsos3_callback);
  62 }
  63
  64 /* Finish up the reading of a NEWS-OS a.out file header */
  65 bfd_target *
  66 newsos3_callback (abfd)
  67      bfd *abfd;
  68 {
  69   struct exec *execp = exec_hdr (abfd);
  70
  71   /* The virtual memory addresses of the sections */
  72   obj_datasec (abfd)->vma = N_DATADDR(*execp);
  73   obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
  74   obj_textsec (abfd)->vma = N_TXTADDR(*execp);
  75
  76   /* The file offsets of the sections */
  77   obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
  78   obj_datasec (abfd)->filepos = N_DATOFF(*execp);
  79
  80   /* The file offsets of the relocation info */
  81   obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
  82   obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
  83
  84   /* The file offsets of the string table and symbol table.  */
  85   obj_str_filepos (abfd) = N_STROFF (*execp);
  86   obj_sym_filepos (abfd) = N_SYMOFF (*execp);
  87
  88   /* Determine the architecture and machine type of the object file.  */
  89   abfd->obj_arch = bfd_arch_m68k;
  90   abfd->obj_machine = 0;
  91
  92   return abfd->xvec;
  93 }
  94
  95 /* Write an object file in NEWS-OS format.
  96    Section contents have already been written.  We write the
  97    file header, symbols, and relocation.  */
  98
  99 boolean
 100 newsos3_write_object_contents (abfd)
 101      bfd *abfd;
 102 {
 103   size_t data_pad = 0;
 104   unsigned char exec_bytes[EXEC_BYTES_SIZE];
 105   struct exec *execp = exec_hdr (abfd);
 106
 107   execp->a_text = obj_textsec (abfd)->size;
 108
 109   if (abfd->flags & D_PAGED)
 110     execp->a_info = ZMAGIC;
 111   else if (abfd->flags & WP_TEXT)
 112     execp->a_info = NMAGIC;
 113   else
 114     execp->a_info = OMAGIC;
 115
 116   if (abfd->flags & D_PAGED)
 117       {
 118         data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
 119                     & (- PAGE_SIZE)) - obj_datasec(abfd)->size;
 120
 121         if (data_pad > obj_bsssec(abfd)->size)
 122           execp->a_bss = 0;
 123         else
 124           execp->a_bss = obj_bsssec(abfd)->size - data_pad;
 125         execp->a_data = obj_datasec(abfd)->size + data_pad;
 126
 127       }
 128   else {
 129     execp->a_data = obj_datasec (abfd)->size;
 130     execp->a_bss = obj_bsssec (abfd)->size;
 131   }
 132
 133   execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
 134   execp->a_entry = bfd_get_start_address (abfd);
 135
 136   execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
 137                      obj_reloc_entry_size (abfd));
 138
 139   execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
 140                      obj_reloc_entry_size (abfd));
 141
 142   bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
 143
 144   bfd_seek (abfd, 0L, false);
 145   bfd_write ((PTR) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
 146
 147   /* Now write out reloc info, followed by syms and strings */
 148
 149   if (bfd_get_symcount (abfd) != 0)
 150     {
 151       bfd_seek (abfd, (long)(N_SYMOFF(*execp)), false);
 152       aout_write_syms (abfd);
 153
 154       bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false);
 155       if (!aout_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
 156
 157       bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false);
 158       if (!aout_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
 159     }
 160   return true;
 161 }
 162 \f
 163 /* Transfer vectors for NEWS-OS version 3 */
 164
 165 /* We use BFD generic archive files.  */
 166 #define aout_openr_next_archived_file   bfd_generic_openr_next_archived_file
 167 #define aout_generic_stat_arch_elt      bfd_generic_stat_arch_elt
 168 #define aout_slurp_armap                bfd_slurp_bsd_armap
 169 #define aout_slurp_extended_name_table  bfd_true
 170 #define aout_write_armap                bsd_write_armap
 171 #define aout_truncate_arname            bfd_bsd_truncate_arname
 172
 173 /* We don't support core files yet.  FIXME.  */
 174 #define aout_core_file_failing_command  _bfd_dummy_core_file_failing_command
 175 #define aout_core_file_failing_signal   _bfd_dummy_core_file_failing_signal
 176 #define aout_core_file_matches_executable_p     \
 177                                 _bfd_dummy_core_file_matches_executable_p
 178 #define aout_core_file_p                _bfd_dummy_target
 179
 180 /* We define our own versions of these routines.  */
 181
 182
 183 bfd_target newsos3_vec = /* Sony 68k-based machines running newos3 */
 184 {
 185   "a.out-newos3",               /* name */
 186   bfd_target_aout_flavour_enum,
 187   true,                         /* target byte order */
 188   true,                         /* target headers byte order */
 189   (HAS_RELOC | EXEC_P |         /* object flags */
 190    HAS_LINENO | HAS_DEBUG |
 191    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
 192   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 193   ' ',                          /* ar_pad_char */
 194   16,                           /* ar_max_namelen */
 195
 196   _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
 197   _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
 198
 199   {_bfd_dummy_target, newsos3_object_p, /* bfd_check_format */
 200      bfd_generic_archive_p, aout_core_file_p},
 201   {bfd_false, aout_mkobject,            /* bfd_set_format */
 202      _bfd_generic_mkarchive, bfd_false},
 203   {bfd_false, newsos3_write_object_contents,    /* bfd_write_contents */
 204      _bfd_write_archive_contents, bfd_false},
 205
 206   JUMP_TABLE(aout)
 207 };