Esempio n. 1
0
static const bfd_target *
os9k_callback (bfd *abfd)
{
  struct internal_exec *execp = exec_hdr (abfd);
  unsigned long bss_start;

  /* Architecture and machine type.  */
  bfd_set_arch_mach (abfd, bfd_arch_i386, 0);

  /* The positions of the string table and symbol table.  */
  obj_str_filepos (abfd) = 0;
  obj_sym_filepos (abfd) = 0;

  /* The alignments of the sections.  */
  obj_textsec (abfd)->alignment_power = execp->a_talign;
  obj_datasec (abfd)->alignment_power = execp->a_dalign;
  obj_bsssec (abfd)->alignment_power = execp->a_balign;

  /* The starting addresses of the sections.  */
  obj_textsec (abfd)->vma = execp->a_tload;
  obj_datasec (abfd)->vma = execp->a_dload;

  /* And reload the sizes, since the aout module zaps them.  */
  obj_textsec (abfd)->size = execp->a_text;

  bss_start = execp->a_dload + execp->a_data;	/* BSS = end of data section.  */
  obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);

  /* The file positions of the sections.  */
  obj_textsec (abfd)->filepos = execp->a_entry;
  obj_datasec (abfd)->filepos = execp->a_dload;

  /* The file positions of the relocation info ***
  obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
  obj_datasec (abfd)->rel_filepos =  N_DROFF(*execp);  */

  adata (abfd).page_size = 1;	/* Not applicable.  */
  adata (abfd).segment_size = 1;/* Not applicable.  */
  adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE;

  return abfd->xvec;
}
Esempio n. 2
0
/* Set parameters about this a.out file that are machine-dependent.
   This routine is called from some_aout_object_p just before it returns.  */
static const bfd_target *
MY (callback) (bfd *abfd)
{
  struct internal_exec *execp = exec_hdr (abfd);

  /* Calculate the file positions of the parts of a newly read aout header */
  obj_textsec (abfd)->size = N_TXTSIZE (*execp);

  /* The virtual memory addresses of the sections */
  obj_textsec (abfd)->vma = N_TXTADDR (*execp);
  obj_datasec (abfd)->vma = N_DATADDR (*execp);
  obj_bsssec (abfd)->vma = N_BSSADDR (*execp);

  obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
  obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
  obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;

  /* The file offsets of the sections */
  obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
  obj_datasec (abfd)->filepos = N_DATOFF (*execp);

  /* The file offsets of the relocation info */
  obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
  obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);

  /* The file offsets of the string table and symbol table.  */
  obj_sym_filepos (abfd) = N_SYMOFF (*execp);
  obj_str_filepos (abfd) = N_STROFF (*execp);

  /* Determine the architecture and machine type of the object file.  */
#ifdef SET_ARCH_MACH
  SET_ARCH_MACH (abfd, *execp);
#else
  bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0);
#endif

  if (obj_aout_subformat (abfd) == gnu_encap_format)
    {
      /* The file offsets of the relocation info */
      obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (*execp);
      obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (*execp);

      /* The file offsets of the string table and symbol table.  */
      obj_sym_filepos (abfd) = N_GNU_SYMOFF (*execp);
      obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms);

      abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
      bfd_get_symcount (abfd) = execp->a_syms / 12;
      obj_symbol_entry_size (abfd) = 12;
      obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
    }

  return abfd->xvec;
}
Esempio n. 3
0
static bfd_boolean
MY (write_object_contents) (bfd * abfd)
{
  struct external_exec exec_bytes;
  struct internal_exec *execp = exec_hdr (abfd);
  bfd_size_type text_size;	/* dummy vars */
  file_ptr text_end;

  memset (&exec_bytes, 0, sizeof (exec_bytes));

  obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;

  if (adata (abfd).magic == undecided_magic)
    NAME (aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end);
  execp->a_syms = 0;

  execp->a_entry = bfd_get_start_address (abfd);

  execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
		     obj_reloc_entry_size (abfd));
  execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
		     obj_reloc_entry_size (abfd));

  N_SET_MACHTYPE (*execp, 0xc);
  N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);

  NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes);

  /* update fields not covered by default swap_exec_header_out */

  /* this is really the sym table size but we store it in drelocs */
  H_PUT_32 (abfd, (bfd_get_symcount (abfd) * 12), exec_bytes.e_drelocs);

  if (bfd_seek (abfd, (file_ptr) 0, FALSE) != 0
      || (bfd_bwrite (&exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd)
	  != EXEC_BYTES_SIZE))
    return FALSE;

  /* Write out the symbols, and then the relocs.  We must write out
       the symbols first so that we know the symbol indices.  */

  if (bfd_get_symcount (abfd) != 0)
    {
      /* Skip the relocs to where we want to put the symbols.  */
      if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp) + execp->a_drsize),
		    SEEK_SET) != 0)
	return FALSE;
    }

  if (!MY (write_syms) (abfd))
    return FALSE;

  if (bfd_get_symcount (abfd) != 0)
    {
      if (bfd_seek (abfd, (file_ptr) N_TRELOFF (*execp), SEEK_CUR) != 0)
	return FALSE;
      if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd)))
	return FALSE;
      if (bfd_seek (abfd, (file_ptr) N_DRELOFF (*execp), SEEK_CUR) != 0)
	return FALSE;
      if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd)))
	return FALSE;
    }

  return TRUE;
}