bfd/aout-target.h

   1 /* Define a target vector for a variant of a.out.
   2    Copyright (C) 1990-1991 Free Software Foundation, Inc.
   3
   4 This file is part of BFD, the Binary File Descriptor library.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* Set parameters about this a.out file that are machine-dependent.
  21    This routine is called from some_aout_object_p just before it returns.  */
  22 static bfd_target *
  23 DEFUN(MY(callback),(abfd),
  24       bfd *abfd)
  25 {
  26   struct internal_exec *execp = exec_hdr (abfd);
  27
  28 /* Calculate the file positions of the parts of a newly read aout header */
  29   obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp);
  30
  31   /* The virtual memory addresses of the sections */
  32   obj_textsec (abfd)->vma = N_TXTADDR(*execp);
  33   obj_datasec (abfd)->vma = N_DATADDR(*execp);
  34   obj_bsssec  (abfd)->vma = N_BSSADDR(*execp);
  35
  36   /* The file offsets of the sections */
  37   obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
  38   obj_datasec (abfd)->filepos = N_DATOFF (*execp);
  39
  40   /* The file offsets of the relocation info */
  41   obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
  42   obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
  43
  44   /* The file offsets of the string table and symbol table.  */
  45   obj_sym_filepos (abfd) = N_SYMOFF (*execp);
  46   obj_str_filepos (abfd) = N_STROFF (*execp);
  47
  48   /* Determine the architecture and machine type of the object file.
  49    */
  50 #ifdef SET_ARCH_MACH
  51   SET_ARCH_MACH(abfd, *execp);
  52 #else
  53   bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0);
  54 #endif
  55
  56   adata(abfd).page_size = PAGE_SIZE;
  57 #ifdef SEGMENT_SIZE
  58   adata(abfd).segment_size = SEGMENT_SIZE;
  59 #else
  60   adata(abfd).segment_size = PAGE_SIZE;
  61 #endif
  62   adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
  63
  64   return abfd->xvec;
  65 }
  66
  67 #ifndef MY_object_p
  68 /* Finish up the reading of an a.out file header */
  69
  70 static bfd_target *
  71 DEFUN(MY(object_p),(abfd),
  72      bfd *abfd)
  73 {
  74   struct external_exec exec_bytes;      /* Raw exec header from file */
  75   struct internal_exec exec;            /* Cleaned-up exec header */
  76   bfd_target *target;
  77
  78   if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
  79       != EXEC_BYTES_SIZE) {
  80     bfd_error = wrong_format;
  81     return 0;
  82   }
  83
  84   exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
  85
  86   if (N_BADMAG (exec)) return 0;
  87
  88   NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
  89   target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback));
  90
  91 #ifdef ENTRY_CAN_BE_ZERO
  92   /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
  93    * means that it isn't obvious if EXEC_P should be set.
  94    * All of the following must be true for an executable:
  95    * There must be no relocations, the bfd can be neither an
  96    * archive nor an archive element, and the file must be executable. */
  97
  98   if (exec.a_trsize + exec.a_drsize == 0
  99       && bfd_get_format(abfd) == bfd_object && abfd->my_archive == NULL)
 100     {
 101       struct stat buf;
 102 #ifndef S_IXUSR
 103 #define S_IXUSR 0100    /* Execute by owner.  */
 104 #endif
 105       if (stat(abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
 106         abfd->flags |= EXEC_P;
 107     }
 108 #endif /* ENTRY_CAN_BE_ZERO */
 109
 110   return target;
 111 }
 112 #define MY_object_p MY(object_p)
 113 #endif
 114
 115
 116 #ifndef MY_mkobject
 117 static boolean
 118 DEFUN(MY(mkobject),(abfd),
 119       bfd *abfd)
 120 {
 121   if (NAME(aout,mkobject)(abfd) == false)
 122     return false;
 123   adata(abfd).page_size = PAGE_SIZE;
 124 #ifdef SEGMENT_SIZE
 125   adata(abfd).segment_size = SEGMENT_SIZE;
 126 #else
 127   adata(abfd).segment_size = PAGE_SIZE;
 128 #endif
 129   adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 130   return true;
 131 }
 132 #define MY_mkobject MY(mkobject)
 133 #endif
 134
 135 /* Write an object file.
 136    Section contents have already been written.  We write the
 137    file header, symbols, and relocation.  */
 138
 139 #ifndef MY_write_object_contents
 140 static boolean
 141 DEFUN(MY(write_object_contents),(abfd),
 142       bfd *abfd)
 143 {
 144   bfd_size_type data_pad = 0;
 145   struct external_exec exec_bytes;
 146   struct internal_exec *execp = exec_hdr (abfd);
 147
 148   WRITE_HEADERS(abfd, execp);
 149   return true;
 150 }
 151 #define MY_write_object_contents MY(write_object_contents)
 152 #endif
 153
 154 /* We assume BFD generic archive files.  */
 155 #ifndef MY_openr_next_archived_file
 156 #define MY_openr_next_archived_file     bfd_generic_openr_next_archived_file
 157 #endif
 158 #ifndef MY_generic_stat_arch_elt
 159 #define MY_generic_stat_arch_elt        bfd_generic_stat_arch_elt
 160 #endif
 161 #ifndef MY_slurp_armap
 162 #define MY_slurp_armap                  bfd_slurp_bsd_armap
 163 #endif
 164 #ifndef MY_slurp_extended_name_table
 165 #define MY_slurp_extended_name_table    bfd_true
 166 #endif
 167 #ifndef MY_write_armap
 168 #define MY_write_armap          bsd_write_armap
 169 #endif
 170 #ifndef MY_truncate_arname
 171 #define MY_truncate_arname              bfd_bsd_truncate_arname
 172 #endif
 173
 174 /* No core file defined here -- configure in trad-core.c separately.  */
 175 #ifndef MY_core_file_failing_command
 176 #define MY_core_file_failing_command _bfd_dummy_core_file_failing_command
 177 #endif
 178 #ifndef MY_core_file_failing_signal
 179 #define MY_core_file_failing_signal     _bfd_dummy_core_file_failing_signal
 180 #endif
 181 #ifndef MY_core_file_matches_executable_p
 182 #define MY_core_file_matches_executable_p       \
 183                                 _bfd_dummy_core_file_matches_executable_p
 184 #endif
 185 #ifndef MY_core_file_p
 186 #define MY_core_file_p          _bfd_dummy_target
 187 #endif
 188
 189 #ifndef MY_bfd_debug_info_start
 190 #define MY_bfd_debug_info_start         bfd_void
 191 #endif
 192 #ifndef MY_bfd_debug_info_end
 193 #define MY_bfd_debug_info_end           bfd_void
 194 #endif
 195 #ifndef MY_bfd_debug_info_accumulate
 196 #define MY_bfd_debug_info_accumulate    (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
 197 #endif
 198
 199 #ifndef MY_core_file_failing_command
 200 #define MY_core_file_failing_command NAME(aout,core_file_failing_command)
 201 #endif
 202 #ifndef MY_core_file_failing_signal
 203 #define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
 204 #endif
 205 #ifndef MY_core_file_matches_executable_p
 206 #define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
 207 #endif
 208 #ifndef MY_slurp_armap
 209 #define MY_slurp_armap NAME(aout,slurp_armap)
 210 #endif
 211 #ifndef MY_slurp_extended_name_table
 212 #define MY_slurp_extended_name_table NAME(aout,slurp_extended_name_table)
 213 #endif
 214 #ifndef MY_truncate_arname
 215 #define MY_truncate_arname NAME(aout,truncate_arname)
 216 #endif
 217 #ifndef MY_write_armap
 218 #define MY_write_armap NAME(aout,write_armap)
 219 #endif
 220 #ifndef MY_close_and_cleanup
 221 #define MY_close_and_cleanup NAME(aout,close_and_cleanup)
 222 #endif
 223 #ifndef MY_set_section_contents
 224 #define MY_set_section_contents NAME(aout,set_section_contents)
 225 #endif
 226 #ifndef MY_get_section_contents
 227 #define MY_get_section_contents NAME(aout,get_section_contents)
 228 #endif
 229 #ifndef MY_new_section_hook
 230 #define MY_new_section_hook NAME(aout,new_section_hook)
 231 #endif
 232 #ifndef MY_get_symtab_upper_bound
 233 #define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
 234 #endif
 235 #ifndef MY_get_symtab
 236 #define MY_get_symtab NAME(aout,get_symtab)
 237 #endif
 238 #ifndef MY_get_reloc_upper_bound
 239 #define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
 240 #endif
 241 #ifndef MY_canonicalize_reloc
 242 #define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
 243 #endif
 244 #ifndef MY_make_empty_symbol
 245 #define MY_make_empty_symbol NAME(aout,make_empty_symbol)
 246 #endif
 247 #ifndef MY_print_symbol
 248 #define MY_print_symbol NAME(aout,print_symbol)
 249 #endif
 250 #ifndef MY_get_lineno
 251 #define MY_get_lineno NAME(aout,get_lineno)
 252 #endif
 253 #ifndef MY_set_arch_mach
 254 #define MY_set_arch_mach NAME(aout,set_arch_mach)
 255 #endif
 256 #ifndef MY_openr_next_archived_file
 257 #define MY_openr_next_archived_file NAME(aout,openr_next_archived_file)
 258 #endif
 259 #ifndef MY_find_nearest_line
 260 #define MY_find_nearest_line NAME(aout,find_nearest_line)
 261 #endif
 262 #ifndef MY_generic_stat_arch_elt
 263 #define MY_generic_stat_arch_elt NAME(aout,generic_stat_arch_elt)
 264 #endif
 265 #ifndef MY_sizeof_headers
 266 #define MY_sizeof_headers NAME(aout,sizeof_headers)
 267 #endif
 268 #ifndef MY_bfd_debug_info_start
 269 #define MY_bfd_debug_info_start NAME(aout,bfd_debug_info_start)
 270 #endif
 271 #ifndef MY_bfd_debug_info_end
 272 #define MY_bfd_debug_info_end NAME(aout,bfd_debug_info_end)
 273 #endif
 274 #ifndef MY_bfd_debug_info_accumulat
 275 #define MY_bfd_debug_info_accumulat NAME(aout,bfd_debug_info_accumulat)
 276 #endif
 277
 278 bfd_target MY(vec) =
 279 {
 280   TARGETNAME,           /* name */
 281   bfd_target_aout_flavour,
 282   true,                         /* target byte order */
 283   true,                         /* target headers byte order */
 284   (HAS_RELOC | EXEC_P |         /* object flags */
 285    HAS_LINENO | HAS_DEBUG |
 286    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
 287   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 288   ' ',                          /* ar_pad_char */
 289   16,                           /* ar_max_namelen */
 290   1,                            /* minimum alignment */
 291 #ifdef TARGET_IS_BIG_ENDIAN_P
 292   _do_getb64, _do_putb64,       _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
 293   _do_getb64, _do_putb64,       _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
 294 #else
 295   _do_getl64, _do_putl64,       _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
 296   _do_getl64, _do_putl64,       _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
 297 #endif
 298     {_bfd_dummy_target, MY_object_p, /* bfd_check_format */
 299        bfd_generic_archive_p, MY_core_file_p},
 300     {bfd_false, MY_mkobject,    /* bfd_set_format */
 301        _bfd_generic_mkarchive, bfd_false},
 302     {bfd_false, MY_write_object_contents, /* bfd_write_contents */
 303        _bfd_write_archive_contents, bfd_false},
 304
 305   MY_core_file_failing_command,
 306   MY_core_file_failing_signal,
 307   MY_core_file_matches_executable_p,
 308   MY_slurp_armap,
 309   MY_slurp_extended_name_table,
 310   MY_truncate_arname,
 311   MY_write_armap,
 312   MY_close_and_cleanup,
 313   MY_set_section_contents,
 314   MY_get_section_contents,
 315   MY_new_section_hook,
 316   MY_get_symtab_upper_bound,
 317   MY_get_symtab,
 318   MY_get_reloc_upper_bound,
 319   MY_canonicalize_reloc,
 320   MY_make_empty_symbol,
 321   MY_print_symbol,
 322   MY_get_lineno,
 323   MY_set_arch_mach,
 324   MY_openr_next_archived_file,
 325   MY_find_nearest_line,
 326   MY_generic_stat_arch_elt,
 327   MY_sizeof_headers,
 328   MY_bfd_debug_info_start,
 329   MY_bfd_debug_info_end,
 330   MY_bfd_debug_info_accumulate,
 331   bfd_generic_get_relocated_section_contents
 332 };