ppcboot.c

来自「基于4个mips核的noc设计」· C语言 代码 · 共 543 行 · 第 1/2 页

  sprintf (buf, "_ppcboot_%s_%s", bfd_get_filename (abfd), suffix);

  /* Change any non-alphanumeric characters to underscores.  */
  for (p = buf; *p; p++)
    if (! isalnum ((unsigned char) *p))
      *p = '_';

  return buf;
}


/* Return the symbol table.  */

static long
ppcboot_get_symtab (abfd, alocation)
     bfd *abfd;
     asymbol **alocation;
{
  asection *sec = ppcboot_get_tdata (abfd)->sec;
  asymbol *syms;
  unsigned int i;

  syms = (asymbol *) bfd_alloc (abfd, PPCBOOT_SYMS * sizeof (asymbol));
  if (syms == NULL)
    return false;

  /* Start symbol.  */
  syms[0].the_bfd = abfd;
  syms[0].name = mangle_name (abfd, "start");
  syms[0].value = 0;
  syms[0].flags = BSF_GLOBAL;
  syms[0].section = sec;
  syms[0].udata.p = NULL;

  /* End symbol.  */
  syms[1].the_bfd = abfd;
  syms[1].name = mangle_name (abfd, "end");
  syms[1].value = sec->_raw_size;
  syms[1].flags = BSF_GLOBAL;
  syms[1].section = sec;
  syms[1].udata.p = NULL;

  /* Size symbol.  */
  syms[2].the_bfd = abfd;
  syms[2].name = mangle_name (abfd, "size");
  syms[2].value = sec->_raw_size;
  syms[2].flags = BSF_GLOBAL;
  syms[2].section = bfd_abs_section_ptr;
  syms[2].udata.p = NULL;

  for (i = 0; i < PPCBOOT_SYMS; i++)
    *alocation++ = syms++;
  *alocation = NULL;

  return PPCBOOT_SYMS;
}


/* Make an empty symbol.  */

static asymbol *
ppcboot_make_empty_symbol (abfd)
     bfd *abfd;
{
  return (asymbol *) bfd_alloc (abfd, sizeof (asymbol));
}


#define ppcboot_print_symbol _bfd_nosymbols_print_symbol

/* Get information about a symbol.  */

static void
ppcboot_get_symbol_info (ignore_abfd, symbol, ret)
     bfd *ignore_abfd ATTRIBUTE_UNUSED;
     asymbol *symbol;
     symbol_info *ret;
{
  bfd_symbol_info (symbol, ret);
}

#define ppcboot_bfd_is_local_label_name bfd_generic_is_local_label_name
#define ppcboot_get_lineno _bfd_nosymbols_get_lineno
#define ppcboot_find_nearest_line _bfd_nosymbols_find_nearest_line
#define ppcboot_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
#define ppcboot_read_minisymbols _bfd_generic_read_minisymbols
#define ppcboot_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol

#define ppcboot_get_reloc_upper_bound \
  ((long (*) PARAMS ((bfd *, asection *))) bfd_0l)
#define ppcboot_canonicalize_reloc \
  ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l)
#define ppcboot_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup

/* Write section contents of a ppcboot file.  */

static boolean
ppcboot_set_section_contents (abfd, sec, data, offset, size)
     bfd *abfd;
     asection *sec;
     PTR data;
     file_ptr offset;
     bfd_size_type size;
{
  if (! abfd->output_has_begun)
    {
      bfd_vma low;
      asection *s;

      /* The lowest section VMA sets the virtual address of the start
         of the file.  We use the set the file position of all the
         sections.  */
      low = abfd->sections->vma;
      for (s = abfd->sections->next; s != NULL; s = s->next)
	if (s->vma < low)
	  low = s->vma;

      for (s = abfd->sections; s != NULL; s = s->next)
	s->filepos = s->vma - low;

      abfd->output_has_begun = true;
    }

  return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
}


static int
ppcboot_sizeof_headers (abfd, exec)
     bfd *abfd ATTRIBUTE_UNUSED;
     boolean exec ATTRIBUTE_UNUSED;
{
  return sizeof (ppcboot_hdr_t);
}


/* Print out the program headers.  */

static boolean
ppcboot_bfd_print_private_bfd_data (abfd, farg)
     bfd *abfd;
     PTR farg;
{
  FILE *f = (FILE *)farg;
  ppcboot_data_t *tdata = ppcboot_get_tdata (abfd);
  long entry_offset = bfd_getl_signed_32 ((PTR) tdata->header.entry_offset);
  long length = bfd_getl_signed_32 ((PTR) tdata->header.length);
  int i;

  fprintf (f, _("\nppcboot header:\n"));
  fprintf (f, _("Entry offset        = 0x%.8lx (%ld)\n"), entry_offset, entry_offset);
  fprintf (f, _("Length              = 0x%.8lx (%ld)\n"), length, length);

  if (tdata->header.flags)
    fprintf (f, _("Flag field          = 0x%.2x\n"), tdata->header.flags);

  if (tdata->header.os_id)
    fprintf (f, "OS_ID               = 0x%.2x\n", tdata->header.os_id);

  if (tdata->header.partition_name)
    fprintf (f, _("Partition name      = \"%s\"\n"), tdata->header.partition_name);

  for (i = 0; i < 4; i++)
    {
      long sector_begin  = bfd_getl_signed_32 ((PTR) tdata->header.partition[i].sector_begin);
      long sector_length = bfd_getl_signed_32 ((PTR) tdata->header.partition[i].sector_length);

      /* Skip all 0 entries */
      if (!tdata->header.partition[i].partition_begin.ind
	  && !tdata->header.partition[i].partition_begin.head
	  && !tdata->header.partition[i].partition_begin.sector
	  && !tdata->header.partition[i].partition_begin.cylinder
	  && !tdata->header.partition[i].partition_end.ind
	  && !tdata->header.partition[i].partition_end.head
	  && !tdata->header.partition[i].partition_end.sector
	  && !tdata->header.partition[i].partition_end.cylinder
	  && !sector_begin && !sector_length)
	continue;

      fprintf (f, _("\nPartition[%d] start  = { 0x%.2x, 0x%.2x, 0x%.2x, 0x%.2x }\n"), i,
	       tdata->header.partition[i].partition_begin.ind,
	       tdata->header.partition[i].partition_begin.head,
	       tdata->header.partition[i].partition_begin.sector,
	       tdata->header.partition[i].partition_begin.cylinder);

      fprintf (f, _("Partition[%d] end    = { 0x%.2x, 0x%.2x, 0x%.2x, 0x%.2x }\n"), i,
	       tdata->header.partition[i].partition_end.ind,
	       tdata->header.partition[i].partition_end.head,
	       tdata->header.partition[i].partition_end.sector,
	       tdata->header.partition[i].partition_end.cylinder);

      fprintf (f, _("Partition[%d] sector = 0x%.8lx (%ld)\n"), i, sector_begin, sector_begin);
      fprintf (f, _("Partition[%d] length = 0x%.8lx (%ld)\n"), i, sector_length, sector_length);
    }

  fprintf (f, "\n");
  return true;
}


#define ppcboot_bfd_get_relocated_section_contents \
  bfd_generic_get_relocated_section_contents
#define ppcboot_bfd_relax_section bfd_generic_relax_section
#define ppcboot_bfd_gc_sections bfd_generic_gc_sections
#define ppcboot_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
#define ppcboot_bfd_link_add_symbols _bfd_generic_link_add_symbols
#define ppcboot_bfd_final_link _bfd_generic_final_link
#define ppcboot_bfd_link_split_section _bfd_generic_link_split_section
#define ppcboot_get_section_contents_in_window \
  _bfd_generic_get_section_contents_in_window

#define ppcboot_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
#define ppcboot_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
#define ppcboot_bfd_copy_private_section_data _bfd_generic_bfd_copy_private_section_data
#define ppcboot_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
#define ppcboot_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
#define ppcboot_bfd_print_private_bfd_dat ppcboot_bfd_print_private_bfd_data

const bfd_target ppcboot_vec =
{
  "ppcboot",			/* name */
  bfd_target_unknown_flavour,	/* flavour */
  BFD_ENDIAN_BIG,		/* byteorder is big endian for code */
  BFD_ENDIAN_LITTLE,		/* header_byteorder */
  EXEC_P,			/* object_flags */
  (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
   | SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */
  0,				/* symbol_leading_char */
  ' ',				/* ar_pad_char */
  16,				/* ar_max_namelen */
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* data */
  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* hdrs */
  {				/* bfd_check_format */
    _bfd_dummy_target,
    ppcboot_object_p,		/* bfd_check_format */
    _bfd_dummy_target,
    _bfd_dummy_target,
  },
  {				/* bfd_set_format */
    bfd_false,
    ppcboot_mkobject,
    bfd_false,
    bfd_false,
  },
  {				/* bfd_write_contents */
    bfd_false,
    bfd_true,
    bfd_false,
    bfd_false,
  },

  BFD_JUMP_TABLE_GENERIC (ppcboot),
  BFD_JUMP_TABLE_COPY (ppcboot),
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
  BFD_JUMP_TABLE_SYMBOLS (ppcboot),
  BFD_JUMP_TABLE_RELOCS (ppcboot),
  BFD_JUMP_TABLE_WRITE (ppcboot),
  BFD_JUMP_TABLE_LINK (ppcboot),
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

  NULL,

  NULL
};