Back to index

cell-binutils  2.17cvs20070401
Defines | Functions
cofflink.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "safe-ctype.h"

Go to the source code of this file.

Defines

#define IS_WEAK_EXTERNAL(abfd, sym)
#define IS_EXTERNAL(abfd, sym)   ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))
#define N_TMASK   n_tmask
#define N_BTSHFT   n_btshft
#define N_BTMASK   n_btmask

Functions

static bfd_boolean coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
static bfd_boolean coff_link_check_archive_element (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded)
static bfd_boolean coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
struct bfd_hash_entry_bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, const char *string)
bfd_boolean _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table, bfd *abfd, struct bfd_hash_entry *(*newfunc)(struct bfd_hash_entry *, struct bfd_hash_table *, const char *), unsigned int entsize)
struct bfd_link_hash_table_bfd_coff_link_hash_table_create (bfd *abfd)
struct bfd_hash_entry_bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, const char *string)
bfd_boolean _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
static bfd_boolean coff_link_check_ar_symbols (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded)
bfd_boolean _bfd_coff_final_link (bfd *abfd, struct bfd_link_info *info)
static char * dores_com (char *ptr, bfd *output_bfd, int heap)
static char * get_name (char *ptr, char **dst)
static int process_embedded_commands (bfd *output_bfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, bfd *abfd)
static void mark_relocs (struct coff_final_link_info *finfo, bfd *input_bfd)
bfd_boolean _bfd_coff_link_input_bfd (struct coff_final_link_info *finfo, bfd *input_bfd)
bfd_boolean _bfd_coff_write_global_sym (struct coff_link_hash_entry *h, void *data)
bfd_boolean _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data)
bfd_boolean _bfd_coff_reloc_link_order (bfd *output_bfd, struct coff_final_link_info *finfo, asection *output_section, struct bfd_link_order *link_order)
bfd_boolean _bfd_coff_generic_relocate_section (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, asection *input_section, bfd_byte *contents, struct internal_reloc *relocs, struct internal_syment *syms, asection **sections)

Define Documentation

#define IS_EXTERNAL (   abfd,
  sym 
)    ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))

Definition at line 42 of file cofflink.c.

#define IS_WEAK_EXTERNAL (   abfd,
  sym 
)
Value:
((sym).n_sclass == C_WEAKEXT                            \
   || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK))

Definition at line 37 of file cofflink.c.

#define N_BTMASK   n_btmask

Definition at line 53 of file cofflink.c.

#define N_BTSHFT   n_btshft

Definition at line 52 of file cofflink.c.

#define N_TMASK   n_tmask

Definition at line 51 of file cofflink.c.


Function Documentation

Definition at line 129 of file cofflink.c.

{
  struct coff_debug_merge_hash_entry *ret =
    (struct coff_debug_merge_hash_entry *) entry;

  /* Allocate the structure if it has not already been allocated by a
     subclass.  */
  if (ret == (struct coff_debug_merge_hash_entry *) NULL)
    ret = ((struct coff_debug_merge_hash_entry *)
          bfd_hash_allocate (table,
                           sizeof (struct coff_debug_merge_hash_entry)));
  if (ret == (struct coff_debug_merge_hash_entry *) NULL)
    return (struct bfd_hash_entry *) ret;

  /* Call the allocation method of the superclass.  */
  ret = ((struct coff_debug_merge_hash_entry *)
        bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
  if (ret != (struct coff_debug_merge_hash_entry *) NULL)
    {
      /* Set local fields.  */
      ret->types = NULL;
    }

  return (struct bfd_hash_entry *) ret;
}

Here is the call graph for this function:

Definition at line 626 of file cofflink.c.

{
  bfd_size_type symesz;
  struct coff_final_link_info finfo;
  bfd_boolean debug_merge_allocated;
  bfd_boolean long_section_names;
  asection *o;
  struct bfd_link_order *p;
  bfd_size_type max_sym_count;
  bfd_size_type max_lineno_count;
  bfd_size_type max_reloc_count;
  bfd_size_type max_output_reloc_count;
  bfd_size_type max_contents_size;
  file_ptr rel_filepos;
  unsigned int relsz;
  file_ptr line_filepos;
  unsigned int linesz;
  bfd *sub;
  bfd_byte *external_relocs = NULL;
  char strbuf[STRING_SIZE_SIZE];
  bfd_size_type amt;

  symesz = bfd_coff_symesz (abfd);

  finfo.info = info;
  finfo.output_bfd = abfd;
  finfo.strtab = NULL;
  finfo.section_info = NULL;
  finfo.last_file_index = -1;
  finfo.last_bf_index = -1;
  finfo.internal_syms = NULL;
  finfo.sec_ptrs = NULL;
  finfo.sym_indices = NULL;
  finfo.outsyms = NULL;
  finfo.linenos = NULL;
  finfo.contents = NULL;
  finfo.external_relocs = NULL;
  finfo.internal_relocs = NULL;
  finfo.global_to_static = FALSE;
  debug_merge_allocated = FALSE;

  coff_data (abfd)->link_info = info;

  finfo.strtab = _bfd_stringtab_init ();
  if (finfo.strtab == NULL)
    goto error_return;

  if (! coff_debug_merge_hash_table_init (&finfo.debug_merge))
    goto error_return;
  debug_merge_allocated = TRUE;

  /* Compute the file positions for all the sections.  */
  if (! abfd->output_has_begun)
    {
      if (! bfd_coff_compute_section_file_positions (abfd))
       goto error_return;
    }

  /* Count the line numbers and relocation entries required for the
     output file.  Set the file positions for the relocs.  */
  rel_filepos = obj_relocbase (abfd);
  relsz = bfd_coff_relsz (abfd);
  max_contents_size = 0;
  max_lineno_count = 0;
  max_reloc_count = 0;

  long_section_names = FALSE;
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      o->reloc_count = 0;
      o->lineno_count = 0;
      for (p = o->map_head.link_order; p != NULL; p = p->next)
       {
         if (p->type == bfd_indirect_link_order)
           {
             asection *sec;

             sec = p->u.indirect.section;

             /* Mark all sections which are to be included in the
               link.  This will normally be every section.  We need
               to do this so that we can identify any sections which
               the linker has decided to not include.  */
             sec->linker_mark = TRUE;

             if (info->strip == strip_none
                || info->strip == strip_some)
              o->lineno_count += sec->lineno_count;

             if (info->relocatable)
              o->reloc_count += sec->reloc_count;

             if (sec->rawsize > max_contents_size)
              max_contents_size = sec->rawsize;
             if (sec->size > max_contents_size)
              max_contents_size = sec->size;
             if (sec->lineno_count > max_lineno_count)
              max_lineno_count = sec->lineno_count;
             if (sec->reloc_count > max_reloc_count)
              max_reloc_count = sec->reloc_count;
           }
         else if (info->relocatable
                 && (p->type == bfd_section_reloc_link_order
                     || p->type == bfd_symbol_reloc_link_order))
           ++o->reloc_count;
       }
      if (o->reloc_count == 0)
       o->rel_filepos = 0;
      else
       {
         o->flags |= SEC_RELOC;
         o->rel_filepos = rel_filepos;
         rel_filepos += o->reloc_count * relsz;
         /* In PE COFF, if there are at least 0xffff relocations an
            extra relocation will be written out to encode the count.  */
         if (obj_pe (abfd) && o->reloc_count >= 0xffff)
           rel_filepos += relsz;
       }

      if (bfd_coff_long_section_names (abfd)
         && strlen (o->name) > SCNNMLEN)
       {
         /* This section has a long name which must go in the string
             table.  This must correspond to the code in
             coff_write_object_contents which puts the string index
             into the s_name field of the section header.  That is why
             we pass hash as FALSE.  */
         if (_bfd_stringtab_add (finfo.strtab, o->name, FALSE, FALSE)
             == (bfd_size_type) -1)
           goto error_return;
         long_section_names = TRUE;
       }
    }

  /* If doing a relocatable link, allocate space for the pointers we
     need to keep.  */
  if (info->relocatable)
    {
      unsigned int i;

      /* We use section_count + 1, rather than section_count, because
         the target_index fields are 1 based.  */
      amt = abfd->section_count + 1;
      amt *= sizeof (struct coff_link_section_info);
      finfo.section_info = bfd_malloc (amt);
      if (finfo.section_info == NULL)
       goto error_return;
      for (i = 0; i <= abfd->section_count; i++)
       {
         finfo.section_info[i].relocs = NULL;
         finfo.section_info[i].rel_hashes = NULL;
       }
    }

  /* We now know the size of the relocs, so we can determine the file
     positions of the line numbers.  */
  line_filepos = rel_filepos;
  linesz = bfd_coff_linesz (abfd);
  max_output_reloc_count = 0;
  for (o = abfd->sections; o != NULL; o = o->next)
    {
      if (o->lineno_count == 0)
       o->line_filepos = 0;
      else
       {
         o->line_filepos = line_filepos;
         line_filepos += o->lineno_count * linesz;
       }

      if (o->reloc_count != 0)
       {
         /* We don't know the indices of global symbols until we have
             written out all the local symbols.  For each section in
             the output file, we keep an array of pointers to hash
             table entries.  Each entry in the array corresponds to a
             reloc.  When we find a reloc against a global symbol, we
             set the corresponding entry in this array so that we can
             fix up the symbol index after we have written out all the
             local symbols.

            Because of this problem, we also keep the relocs in
            memory until the end of the link.  This wastes memory,
            but only when doing a relocatable link, which is not the
            common case.  */
         BFD_ASSERT (info->relocatable);
         amt = o->reloc_count;
         amt *= sizeof (struct internal_reloc);
         finfo.section_info[o->target_index].relocs = bfd_malloc (amt);
         amt = o->reloc_count;
         amt *= sizeof (struct coff_link_hash_entry *);
         finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt);
         if (finfo.section_info[o->target_index].relocs == NULL
             || finfo.section_info[o->target_index].rel_hashes == NULL)
           goto error_return;

         if (o->reloc_count > max_output_reloc_count)
           max_output_reloc_count = o->reloc_count;
       }

      /* Reset the reloc and lineno counts, so that we can use them to
        count the number of entries we have output so far.  */
      o->reloc_count = 0;
      o->lineno_count = 0;
    }

  obj_sym_filepos (abfd) = line_filepos;

  /* Figure out the largest number of symbols in an input BFD.  Take
     the opportunity to clear the output_has_begun fields of all the
     input BFD's.  */
  max_sym_count = 0;
  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
    {
      size_t sz;

      sub->output_has_begun = FALSE;
      sz = obj_raw_syment_count (sub);
      if (sz > max_sym_count)
       max_sym_count = sz;
    }

  /* Allocate some buffers used while linking.  */
  amt = max_sym_count * sizeof (struct internal_syment);
  finfo.internal_syms = bfd_malloc (amt);
  amt = max_sym_count * sizeof (asection *);
  finfo.sec_ptrs = bfd_malloc (amt);
  amt = max_sym_count * sizeof (long);
  finfo.sym_indices = bfd_malloc (amt);
  finfo.outsyms = bfd_malloc ((max_sym_count + 1) * symesz);
  amt = max_lineno_count * bfd_coff_linesz (abfd);
  finfo.linenos = bfd_malloc (amt);
  finfo.contents = bfd_malloc (max_contents_size);
  amt = max_reloc_count * relsz;
  finfo.external_relocs = bfd_malloc (amt);
  if (! info->relocatable)
    {
      amt = max_reloc_count * sizeof (struct internal_reloc);
      finfo.internal_relocs = bfd_malloc (amt);
    }
  if ((finfo.internal_syms == NULL && max_sym_count > 0)
      || (finfo.sec_ptrs == NULL && max_sym_count > 0)
      || (finfo.sym_indices == NULL && max_sym_count > 0)
      || finfo.outsyms == NULL
      || (finfo.linenos == NULL && max_lineno_count > 0)
      || (finfo.contents == NULL && max_contents_size > 0)
      || (finfo.external_relocs == NULL && max_reloc_count > 0)
      || (! info->relocatable
         && finfo.internal_relocs == NULL
         && max_reloc_count > 0))
    goto error_return;

  /* We now know the position of everything in the file, except that
     we don't know the size of the symbol table and therefore we don't
     know where the string table starts.  We just build the string
     table in memory as we go along.  We process all the relocations
     for a single input file at once.  */
  obj_raw_syment_count (abfd) = 0;

  if (coff_backend_info (abfd)->_bfd_coff_start_final_link)
    {
      if (! bfd_coff_start_final_link (abfd, info))
       goto error_return;
    }

  for (o = abfd->sections; o != NULL; o = o->next)
    {
      for (p = o->map_head.link_order; p != NULL; p = p->next)
       {
         if (p->type == bfd_indirect_link_order
             && bfd_family_coff (p->u.indirect.section->owner))
           {
             sub = p->u.indirect.section->owner;
             if (! bfd_coff_link_output_has_begun (sub, & finfo))
              {
                if (! _bfd_coff_link_input_bfd (&finfo, sub))
                  goto error_return;
                sub->output_has_begun = TRUE;
              }
           }
         else if (p->type == bfd_section_reloc_link_order
                 || p->type == bfd_symbol_reloc_link_order)
           {
             if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p))
              goto error_return;
           }
         else
           {
             if (! _bfd_default_link_order (abfd, info, o, p))
              goto error_return;
           }
       }
    }

  if (! bfd_coff_final_link_postscript (abfd, & finfo))
    goto error_return;

  /* Free up the buffers used by _bfd_coff_link_input_bfd.  */

  coff_debug_merge_hash_table_free (&finfo.debug_merge);
  debug_merge_allocated = FALSE;

  if (finfo.internal_syms != NULL)
    {
      free (finfo.internal_syms);
      finfo.internal_syms = NULL;
    }
  if (finfo.sec_ptrs != NULL)
    {
      free (finfo.sec_ptrs);
      finfo.sec_ptrs = NULL;
    }
  if (finfo.sym_indices != NULL)
    {
      free (finfo.sym_indices);
      finfo.sym_indices = NULL;
    }
  if (finfo.linenos != NULL)
    {
      free (finfo.linenos);
      finfo.linenos = NULL;
    }
  if (finfo.contents != NULL)
    {
      free (finfo.contents);
      finfo.contents = NULL;
    }
  if (finfo.external_relocs != NULL)
    {
      free (finfo.external_relocs);
      finfo.external_relocs = NULL;
    }
  if (finfo.internal_relocs != NULL)
    {
      free (finfo.internal_relocs);
      finfo.internal_relocs = NULL;
    }

  /* The value of the last C_FILE symbol is supposed to be the symbol
     index of the first external symbol.  Write it out again if
     necessary.  */
  if (finfo.last_file_index != -1
      && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd))
    {
      file_ptr pos;

      finfo.last_file.n_value = obj_raw_syment_count (abfd);
      bfd_coff_swap_sym_out (abfd, &finfo.last_file,
                          finfo.outsyms);

      pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
      if (bfd_seek (abfd, pos, SEEK_SET) != 0
         || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
       return FALSE;
    }

  /* If doing task linking (ld --task-link) then make a pass through the
     global symbols, writing out any that are defined, and making them
     static.  */
  if (info->task_link)
    {
      finfo.failed = FALSE;
      coff_link_hash_traverse (coff_hash_table (info),
                            _bfd_coff_write_task_globals, &finfo);
      if (finfo.failed)
       goto error_return;
    }

  /* Write out the global symbols.  */
  finfo.failed = FALSE;
  coff_link_hash_traverse (coff_hash_table (info),
                        _bfd_coff_write_global_sym, &finfo);
  if (finfo.failed)
    goto error_return;

  /* The outsyms buffer is used by _bfd_coff_write_global_sym.  */
  if (finfo.outsyms != NULL)
    {
      free (finfo.outsyms);
      finfo.outsyms = NULL;
    }

  if (info->relocatable && max_output_reloc_count > 0)
    {
      /* Now that we have written out all the global symbols, we know
        the symbol indices to use for relocs against them, and we can
        finally write out the relocs.  */
      amt = max_output_reloc_count * relsz;
      external_relocs = bfd_malloc (amt);
      if (external_relocs == NULL)
       goto error_return;

      for (o = abfd->sections; o != NULL; o = o->next)
       {
         struct internal_reloc *irel;
         struct internal_reloc *irelend;
         struct coff_link_hash_entry **rel_hash;
         bfd_byte *erel;

         if (o->reloc_count == 0)
           continue;

         irel = finfo.section_info[o->target_index].relocs;
         irelend = irel + o->reloc_count;
         rel_hash = finfo.section_info[o->target_index].rel_hashes;
         erel = external_relocs;
         for (; irel < irelend; irel++, rel_hash++, erel += relsz)
           {
             if (*rel_hash != NULL)
              {
                BFD_ASSERT ((*rel_hash)->indx >= 0);
                irel->r_symndx = (*rel_hash)->indx;
              }
             bfd_coff_swap_reloc_out (abfd, irel, erel);
           }

         if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0)
           goto error_return;
         if (obj_pe (abfd) && o->reloc_count >= 0xffff)
           {
             /* In PE COFF, write the count of relocs as the first
               reloc.  The header overflow bit will be set
               elsewhere. */
             struct internal_reloc incount;
             bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz);
             
             memset (&incount, 0, sizeof (incount));
             incount.r_vaddr = o->reloc_count + 1;
             bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount);
             if (bfd_bwrite (excount, relsz, abfd) != relsz)
              /* We'll leak, but it's an error anyway. */
              goto error_return;
             free (excount);
           }
         if (bfd_bwrite (external_relocs,
                       (bfd_size_type) relsz * o->reloc_count, abfd)
             != (bfd_size_type) relsz * o->reloc_count)
           goto error_return;
       }

      free (external_relocs);
      external_relocs = NULL;
    }

  /* Free up the section information.  */
  if (finfo.section_info != NULL)
    {
      unsigned int i;

      for (i = 0; i < abfd->section_count; i++)
       {
         if (finfo.section_info[i].relocs != NULL)
           free (finfo.section_info[i].relocs);
         if (finfo.section_info[i].rel_hashes != NULL)
           free (finfo.section_info[i].rel_hashes);
       }
      free (finfo.section_info);
      finfo.section_info = NULL;
    }

  /* If we have optimized stabs strings, output them.  */
  if (coff_hash_table (info)->stab_info.stabstr != NULL)
    {
      if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info))
       return FALSE;
    }

  /* Write out the string table.  */
  if (obj_raw_syment_count (abfd) != 0 || long_section_names)
    {
      file_ptr pos;

      pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
      if (bfd_seek (abfd, pos, SEEK_SET) != 0)
       return FALSE;

#if STRING_SIZE_SIZE == 4
      H_PUT_32 (abfd,
              _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
              strbuf);
#else
 #error Change H_PUT_32 above
#endif

      if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd)
         != STRING_SIZE_SIZE)
       return FALSE;

      if (! _bfd_stringtab_emit (abfd, finfo.strtab))
       return FALSE;

      obj_coff_strings_written (abfd) = TRUE;
    }

  _bfd_stringtab_free (finfo.strtab);

  /* Setting bfd_get_symcount to 0 will cause write_object_contents to
     not try to write out the symbols.  */
  bfd_get_symcount (abfd) = 0;

  return TRUE;

 error_return:
  if (debug_merge_allocated)
    coff_debug_merge_hash_table_free (&finfo.debug_merge);
  if (finfo.strtab != NULL)
    _bfd_stringtab_free (finfo.strtab);
  if (finfo.section_info != NULL)
    {
      unsigned int i;

      for (i = 0; i < abfd->section_count; i++)
       {
         if (finfo.section_info[i].relocs != NULL)
           free (finfo.section_info[i].relocs);
         if (finfo.section_info[i].rel_hashes != NULL)
           free (finfo.section_info[i].rel_hashes);
       }
      free (finfo.section_info);
    }
  if (finfo.internal_syms != NULL)
    free (finfo.internal_syms);
  if (finfo.sec_ptrs != NULL)
    free (finfo.sec_ptrs);
  if (finfo.sym_indices != NULL)
    free (finfo.sym_indices);
  if (finfo.outsyms != NULL)
    free (finfo.outsyms);
  if (finfo.linenos != NULL)
    free (finfo.linenos);
  if (finfo.contents != NULL)
    free (finfo.contents);
  if (finfo.external_relocs != NULL)
    free (finfo.external_relocs);
  if (finfo.internal_relocs != NULL)
    free (finfo.internal_relocs);
  if (external_relocs != NULL)
    free (external_relocs);
  return FALSE;
}

Here is the call graph for this function:

bfd_boolean _bfd_coff_generic_relocate_section ( bfd output_bfd,
struct bfd_link_info info,
bfd input_bfd,
asection input_section,
bfd_byte contents,
struct internal_reloc relocs,
struct internal_syment syms,
asection **  sections 
)

Definition at line 2825 of file cofflink.c.

{
  struct internal_reloc *rel;
  struct internal_reloc *relend;

  rel = relocs;
  relend = rel + input_section->reloc_count;
  for (; rel < relend; rel++)
    {
      long symndx;
      struct coff_link_hash_entry *h;
      struct internal_syment *sym;
      bfd_vma addend;
      bfd_vma val;
      reloc_howto_type *howto;
      bfd_reloc_status_type rstat;

      symndx = rel->r_symndx;

      if (symndx == -1)
       {
         h = NULL;
         sym = NULL;
       }
      else if (symndx < 0
              || (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
       {
         (*_bfd_error_handler)
           ("%B: illegal symbol index %ld in relocs", input_bfd, symndx);
         return FALSE;
       }
      else
       {
         h = obj_coff_sym_hashes (input_bfd)[symndx];
         sym = syms + symndx;
       }

      /* COFF treats common symbols in one of two ways.  Either the
         size of the symbol is included in the section contents, or it
         is not.  We assume that the size is not included, and force
         the rtype_to_howto function to adjust the addend as needed.  */
      if (sym != NULL && sym->n_scnum != 0)
       addend = - sym->n_value;
      else
       addend = 0;

      howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
                                   sym, &addend);
      if (howto == NULL)
       return FALSE;

      /* If we are doing a relocatable link, then we can just ignore
         a PC relative reloc that is pcrel_offset.  It will already
         have the correct value.  If this is not a relocatable link,
         then we should ignore the symbol value.  */
      if (howto->pc_relative && howto->pcrel_offset)
       {
         if (info->relocatable)
           continue;
         if (sym != NULL && sym->n_scnum != 0)
           addend += sym->n_value;
       }

      val = 0;

      if (h == NULL)
       {
         asection *sec;

         if (symndx == -1)
           {
             sec = bfd_abs_section_ptr;
             val = 0;
           }
         else
           {
             sec = sections[symndx];
              val = (sec->output_section->vma
                   + sec->output_offset
                   + sym->n_value);
             if (! obj_pe (input_bfd))
              val -= sec->vma;
           }
       }
      else
       {
         if (h->root.type == bfd_link_hash_defined
             || h->root.type == bfd_link_hash_defweak)
           {
             /* Defined weak symbols are a GNU extension. */
             asection *sec;

             sec = h->root.u.def.section;
             val = (h->root.u.def.value
                   + sec->output_section->vma
                   + sec->output_offset);
           }

         else if (h->root.type == bfd_link_hash_undefweak)
           {
              if (h->class == C_NT_WEAK && h->numaux == 1)
              {
                /* See _Microsoft Portable Executable and Common Object
                     File Format Specification_, section 5.5.3.
                   Note that weak symbols without aux records are a GNU
                   extension.
                   FIXME: All weak externals are treated as having
                   characteristic IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY (1).
                   These behave as per SVR4 ABI:  A library member
                   will resolve a weak external only if a normal
                   external causes the library member to be linked.
                   See also linker.c: generic_link_check_archive_element. */
                asection *sec;
                struct coff_link_hash_entry *h2 =
                  input_bfd->tdata.coff_obj_data->sym_hashes[
                  h->aux->x_sym.x_tagndx.l];

                if (!h2 || h2->root.type == bfd_link_hash_undefined)
                  {
                    sec = bfd_abs_section_ptr;
                    val = 0;
                  }
                else
                  {
                    sec = h2->root.u.def.section;
                    val = h2->root.u.def.value
                     + sec->output_section->vma + sec->output_offset;
                  }
              }
             else
                /* This is a GNU extension.  */
              val = 0;
           }

         else if (! info->relocatable)
           {
             if (! ((*info->callbacks->undefined_symbol)
                   (info, h->root.root.string, input_bfd, input_section,
                    rel->r_vaddr - input_section->vma, TRUE)))
              return FALSE;
           }
       }

      if (info->base_file)
       {
         /* Emit a reloc if the backend thinks it needs it.  */
         if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto))
           {
             /* Relocation to a symbol in a section which isn't
               absolute.  We output the address here to a file.
               This file is then read by dlltool when generating the
               reloc section.  Note that the base file is not
               portable between systems.  We write out a long here,
               and dlltool reads in a long.  */
             long addr = (rel->r_vaddr
                        - input_section->vma
                        + input_section->output_offset
                        + input_section->output_section->vma);
             if (coff_data (output_bfd)->pe)
              addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
             if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file)
                != sizeof (long))
              {
                bfd_set_error (bfd_error_system_call);
                return FALSE;
              }
           }
       }

      rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
                                   contents,
                                   rel->r_vaddr - input_section->vma,
                                   val, addend);

      switch (rstat)
       {
       default:
         abort ();
       case bfd_reloc_ok:
         break;
       case bfd_reloc_outofrange:
         (*_bfd_error_handler)
           (_("%B: bad reloc address 0x%lx in section `%A'"),
            input_bfd, input_section, (unsigned long) rel->r_vaddr);
         return FALSE;
       case bfd_reloc_overflow:
         {
           const char *name;
           char buf[SYMNMLEN + 1];

           if (symndx == -1)
             name = "*ABS*";
           else if (h != NULL)
             name = NULL;
           else
             {
              name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
              if (name == NULL)
                return FALSE;
             }

           if (! ((*info->callbacks->reloc_overflow)
                 (info, (h ? &h->root : NULL), name, howto->name,
                  (bfd_vma) 0, input_bfd, input_section,
                  rel->r_vaddr - input_section->vma)))
             return FALSE;
         }
       }
    }
  return TRUE;
}

Here is the call graph for this function:

Definition at line 161 of file cofflink.c.

Here is the call graph for this function:

Definition at line 58 of file cofflink.c.

{
  struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry;

  /* Allocate the structure if it has not already been allocated by a
     subclass.  */
  if (ret == (struct coff_link_hash_entry *) NULL)
    ret = ((struct coff_link_hash_entry *)
          bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry)));
  if (ret == (struct coff_link_hash_entry *) NULL)
    return (struct bfd_hash_entry *) ret;

  /* Call the allocation method of the superclass.  */
  ret = ((struct coff_link_hash_entry *)
        _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
                             table, string));
  if (ret != (struct coff_link_hash_entry *) NULL)
    {
      /* Set local fields.  */
      ret->indx = -1;
      ret->type = T_NULL;
      ret->class = C_NULL;
      ret->numaux = 0;
      ret->auxbfd = NULL;
      ret->aux = NULL;
    }

  return (struct bfd_hash_entry *) ret;
}

Here is the call graph for this function:

Here is the caller graph for this function:

Definition at line 107 of file cofflink.c.

{
  struct coff_link_hash_table *ret;
  bfd_size_type amt = sizeof (struct coff_link_hash_table);

  ret = bfd_malloc (amt);
  if (ret == NULL)
    return NULL;

  if (! _bfd_coff_link_hash_table_init (ret, abfd,
                                   _bfd_coff_link_hash_newfunc,
                                   sizeof (struct coff_link_hash_entry)))
    {
      free (ret);
      return (struct bfd_link_hash_table *) NULL;
    }
  return &ret->root;
}

Here is the call graph for this function:

Definition at line 93 of file cofflink.c.

{
  memset (&table->stab_info, 0, sizeof (table->stab_info));
  return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
}

Here is the call graph for this function:

Here is the caller graph for this function:

Definition at line 1342 of file cofflink.c.

{
  unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask;
  unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft;
  bfd_boolean (*adjust_symndx)
    (bfd *, struct bfd_link_info *, bfd *, asection *,
     struct internal_reloc *, bfd_boolean *);
  bfd *output_bfd;
  const char *strings;
  bfd_size_type syment_base;
  bfd_boolean copy, hash;
  bfd_size_type isymesz;
  bfd_size_type osymesz;
  bfd_size_type linesz;
  bfd_byte *esym;
  bfd_byte *esym_end;
  struct internal_syment *isymp;
  asection **secpp;
  long *indexp;
  unsigned long output_index;
  bfd_byte *outsym;
  struct coff_link_hash_entry **sym_hash;
  asection *o;

  /* Move all the symbols to the output file.  */

  output_bfd = finfo->output_bfd;
  strings = NULL;
  syment_base = obj_raw_syment_count (output_bfd);
  isymesz = bfd_coff_symesz (input_bfd);
  osymesz = bfd_coff_symesz (output_bfd);
  linesz = bfd_coff_linesz (input_bfd);
  BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd));

  copy = FALSE;
  if (! finfo->info->keep_memory)
    copy = TRUE;
  hash = TRUE;
  if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
    hash = FALSE;

  if (! _bfd_coff_get_external_symbols (input_bfd))
    return FALSE;

  esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
  esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
  isymp = finfo->internal_syms;
  secpp = finfo->sec_ptrs;
  indexp = finfo->sym_indices;
  output_index = syment_base;
  outsym = finfo->outsyms;

  if (coff_data (output_bfd)->pe
      && ! process_embedded_commands (output_bfd, finfo->info, input_bfd))
    return FALSE;

  /* If we are going to perform relocations and also strip/discard some
     symbols then we must make sure that we do not strip/discard those
     symbols that are going to be involved in the relocations.  */
  if ((   finfo->info->strip   != strip_none
       || finfo->info->discard != discard_none)
      && finfo->info->relocatable)
    {
      /* Mark the symbol array as 'not-used'.  */
      memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp);

      mark_relocs (finfo, input_bfd);
    }

  while (esym < esym_end)
    {
      struct internal_syment isym;
      enum coff_symbol_classification classification;
      bfd_boolean skip;
      bfd_boolean global;
      bfd_boolean dont_skip_symbol;
      int add;

      bfd_coff_swap_sym_in (input_bfd, esym, isymp);

      /* Make a copy of *isymp so that the relocate_section function
        always sees the original values.  This is more reliable than
        always recomputing the symbol value even if we are stripping
        the symbol.  */
      isym = *isymp;

      classification = bfd_coff_classify_symbol (input_bfd, &isym);
      switch (classification)
       {
       default:
         abort ();
       case COFF_SYMBOL_GLOBAL:
       case COFF_SYMBOL_PE_SECTION:
       case COFF_SYMBOL_LOCAL:
         *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
         break;
       case COFF_SYMBOL_COMMON:
         *secpp = bfd_com_section_ptr;
         break;
       case COFF_SYMBOL_UNDEFINED:
         *secpp = bfd_und_section_ptr;
         break;
       }

      /* Extract the flag indicating if this symbol is used by a
         relocation.  */
      if ((finfo->info->strip != strip_none
          || finfo->info->discard != discard_none)
         && finfo->info->relocatable)
       dont_skip_symbol = *indexp;
      else
       dont_skip_symbol = FALSE;

      *indexp = -1;

      skip = FALSE;
      global = FALSE;
      add = 1 + isym.n_numaux;

      /* If we are stripping all symbols, we want to skip this one.  */
      if (finfo->info->strip == strip_all && ! dont_skip_symbol)
       skip = TRUE;

      if (! skip)
       {
         switch (classification)
           {
           default:
             abort ();
           case COFF_SYMBOL_GLOBAL:
           case COFF_SYMBOL_COMMON:
           case COFF_SYMBOL_PE_SECTION:
             /* This is a global symbol.  Global symbols come at the
               end of the symbol table, so skip them for now.
               Locally defined function symbols, however, are an
               exception, and are not moved to the end.  */
             global = TRUE;
             if (! ISFCN (isym.n_type))
              skip = TRUE;
             break;

           case COFF_SYMBOL_UNDEFINED:
             /* Undefined symbols are left for the end.  */
             global = TRUE;
             skip = TRUE;
             break;

           case COFF_SYMBOL_LOCAL:
             /* This is a local symbol.  Skip it if we are discarding
                 local symbols.  */
             if (finfo->info->discard == discard_all && ! dont_skip_symbol)
              skip = TRUE;
             break;
           }
       }

#ifndef COFF_WITH_PE
      /* Skip section symbols for sections which are not going to be
        emitted.  */
      if (!skip
         && dont_skip_symbol == 0
         && isym.n_sclass == C_STAT
         && isym.n_type == T_NULL
          && isym.n_numaux > 0
         && (*secpp)->output_section == bfd_abs_section_ptr)
       skip = TRUE;
#endif

      /* If we stripping debugging symbols, and this is a debugging
         symbol, then skip it.  FIXME: gas sets the section to N_ABS
         for some types of debugging symbols; I don't know if this is
         a bug or not.  In any case, we handle it here.  */
      if (! skip
         && finfo->info->strip == strip_debugger
         && ! dont_skip_symbol
         && (isym.n_scnum == N_DEBUG
             || (isym.n_scnum == N_ABS
                && (isym.n_sclass == C_AUTO
                    || isym.n_sclass == C_REG
                    || isym.n_sclass == C_MOS
                    || isym.n_sclass == C_MOE
                    || isym.n_sclass == C_MOU
                    || isym.n_sclass == C_ARG
                    || isym.n_sclass == C_REGPARM
                    || isym.n_sclass == C_FIELD
                    || isym.n_sclass == C_EOS))))
       skip = TRUE;

      /* If some symbols are stripped based on the name, work out the
        name and decide whether to skip this symbol.  */
      if (! skip
         && (finfo->info->strip == strip_some
             || finfo->info->discard == discard_l))
       {
         const char *name;
         char buf[SYMNMLEN + 1];

         name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
         if (name == NULL)
           return FALSE;

         if (! dont_skip_symbol
             && ((finfo->info->strip == strip_some
                 && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE,
                                FALSE) == NULL))
                 || (! global
                     && finfo->info->discard == discard_l
                     && bfd_is_local_label_name (input_bfd, name))))
           skip = TRUE;
       }

      /* If this is an enum, struct, or union tag, see if we have
         already output an identical type.  */
      if (! skip
         && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0
         && (isym.n_sclass == C_ENTAG
             || isym.n_sclass == C_STRTAG
             || isym.n_sclass == C_UNTAG)
         && isym.n_numaux == 1)
       {
         const char *name;
         char buf[SYMNMLEN + 1];
         struct coff_debug_merge_hash_entry *mh;
         struct coff_debug_merge_type *mt;
         union internal_auxent aux;
         struct coff_debug_merge_element **epp;
         bfd_byte *esl, *eslend;
         struct internal_syment *islp;
         bfd_size_type amt;

         name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
         if (name == NULL)
           return FALSE;

         /* Ignore fake names invented by compiler; treat them all as
             the same name.  */
         if (*name == '~' || *name == '.' || *name == '$'
             || (*name == bfd_get_symbol_leading_char (input_bfd)
                && (name[1] == '~' || name[1] == '.' || name[1] == '$')))
           name = "";

         mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name,
                                        TRUE, TRUE);
         if (mh == NULL)
           return FALSE;

         /* Allocate memory to hold type information.  If this turns
             out to be a duplicate, we pass this address to
             bfd_release.  */
         amt = sizeof (struct coff_debug_merge_type);
         mt = bfd_alloc (input_bfd, amt);
         if (mt == NULL)
           return FALSE;
         mt->class = isym.n_sclass;

         /* Pick up the aux entry, which points to the end of the tag
             entries.  */
         bfd_coff_swap_aux_in (input_bfd, (esym + isymesz),
                            isym.n_type, isym.n_sclass, 0, isym.n_numaux,
                            &aux);

         /* Gather the elements.  */
         epp = &mt->elements;
         mt->elements = NULL;
         islp = isymp + 2;
         esl = esym + 2 * isymesz;
         eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd)
                  + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz);
         while (esl < eslend)
           {
             const char *elename;
             char elebuf[SYMNMLEN + 1];
             char *name_copy;

             bfd_coff_swap_sym_in (input_bfd, esl, islp);

             amt = sizeof (struct coff_debug_merge_element);
             *epp = bfd_alloc (input_bfd, amt);
             if (*epp == NULL)
              return FALSE;

             elename = _bfd_coff_internal_syment_name (input_bfd, islp,
                                                 elebuf);
             if (elename == NULL)
              return FALSE;

             amt = strlen (elename) + 1;
             name_copy = bfd_alloc (input_bfd, amt);
             if (name_copy == NULL)
              return FALSE;
             strcpy (name_copy, elename);

             (*epp)->name = name_copy;
             (*epp)->type = islp->n_type;
             (*epp)->tagndx = 0;
             if (islp->n_numaux >= 1
                && islp->n_type != T_NULL
                && islp->n_sclass != C_EOS)
              {
                union internal_auxent eleaux;
                long indx;

                bfd_coff_swap_aux_in (input_bfd, (esl + isymesz),
                                   islp->n_type, islp->n_sclass, 0,
                                   islp->n_numaux, &eleaux);
                indx = eleaux.x_sym.x_tagndx.l;

                /* FIXME: If this tagndx entry refers to a symbol
                   defined later in this file, we just ignore it.
                   Handling this correctly would be tedious, and may
                   not be required.  */
                if (indx > 0
                    && (indx
                       < ((esym -
                           (bfd_byte *) obj_coff_external_syms (input_bfd))
                          / (long) isymesz)))
                  {
                    (*epp)->tagndx = finfo->sym_indices[indx];
                    if ((*epp)->tagndx < 0)
                     (*epp)->tagndx = 0;
                  }
              }
             epp = &(*epp)->next;
             *epp = NULL;

             esl += (islp->n_numaux + 1) * isymesz;
             islp += islp->n_numaux + 1;
           }

         /* See if we already have a definition which matches this
             type.  We always output the type if it has no elements,
             for simplicity.  */
         if (mt->elements == NULL)
           bfd_release (input_bfd, mt);
         else
           {
             struct coff_debug_merge_type *mtl;

             for (mtl = mh->types; mtl != NULL; mtl = mtl->next)
              {
                struct coff_debug_merge_element *me, *mel;

                if (mtl->class != mt->class)
                  continue;

                for (me = mt->elements, mel = mtl->elements;
                     me != NULL && mel != NULL;
                     me = me->next, mel = mel->next)
                  {
                    if (strcmp (me->name, mel->name) != 0
                       || me->type != mel->type
                       || me->tagndx != mel->tagndx)
                     break;
                  }

                if (me == NULL && mel == NULL)
                  break;
              }

             if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base)
              {
                /* This is the first definition of this type.  */
                mt->indx = output_index;
                mt->next = mh->types;
                mh->types = mt;
              }
             else
              {
                /* This is a redefinition which can be merged.  */
                bfd_release (input_bfd, mt);
                *indexp = mtl->indx;
                add = (eslend - esym) / isymesz;
                skip = TRUE;
              }
           }
       }

      /* We now know whether we are to skip this symbol or not.  */
      if (! skip)
       {
         /* Adjust the symbol in order to output it.  */

         if (isym._n._n_n._n_zeroes == 0
             && isym._n._n_n._n_offset != 0)
           {
             const char *name;
             bfd_size_type indx;

             /* This symbol has a long name.  Enter it in the string
               table we are building.  Note that we do not check
               bfd_coff_symname_in_debug.  That is only true for
               XCOFF, and XCOFF requires different linking code
               anyhow.  */
             name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL);
             if (name == NULL)
              return FALSE;
             indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy);
             if (indx == (bfd_size_type) -1)
              return FALSE;
             isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
           }

         switch (isym.n_sclass)
           {
           case C_AUTO:
           case C_MOS:
           case C_EOS:
           case C_MOE:
           case C_MOU:
           case C_UNTAG:
           case C_STRTAG:
           case C_ENTAG:
           case C_TPDEF:
           case C_ARG:
           case C_USTATIC:
           case C_REG:
           case C_REGPARM:
           case C_FIELD:
             /* The symbol value should not be modified.  */
             break;

           case C_FCN:
             if (obj_pe (input_bfd)
                && strcmp (isym.n_name, ".bf") != 0
                && isym.n_scnum > 0)
              {
                /* For PE, .lf and .ef get their value left alone,
                   while .bf gets relocated.  However, they all have
                   "real" section numbers, and need to be moved into
                   the new section.  */
                isym.n_scnum = (*secpp)->output_section->target_index;
                break;
              }
             /* Fall through.  */
           default:
           case C_LABEL:  /* Not completely sure about these 2 */
           case C_EXTDEF:
           case C_BLOCK:
           case C_EFCN:
           case C_NULL:
           case C_EXT:
           case C_STAT:
           case C_SECTION:
           case C_NT_WEAK:
             /* Compute new symbol location.  */
           if (isym.n_scnum > 0)
             {
              isym.n_scnum = (*secpp)->output_section->target_index;
              isym.n_value += (*secpp)->output_offset;
              if (! obj_pe (input_bfd))
                isym.n_value -= (*secpp)->vma;
              if (! obj_pe (finfo->output_bfd))
                isym.n_value += (*secpp)->output_section->vma;
             }
           break;

           case C_FILE:
             /* The value of a C_FILE symbol is the symbol index of
               the next C_FILE symbol.  The value of the last C_FILE
               symbol is the symbol index to the first external
               symbol (actually, coff_renumber_symbols does not get
               this right--it just sets the value of the last C_FILE
               symbol to zero--and nobody has ever complained about
               it).  We try to get this right, below, just before we
               write the symbols out, but in the general case we may
               have to write the symbol out twice.  */
             if (finfo->last_file_index != -1
                && finfo->last_file.n_value != (bfd_vma) output_index)
              {
                /* We must correct the value of the last C_FILE
                     entry.  */
                finfo->last_file.n_value = output_index;
                if ((bfd_size_type) finfo->last_file_index >= syment_base)
                  {
                    /* The last C_FILE symbol is in this input file.  */
                    bfd_coff_swap_sym_out (output_bfd,
                                        &finfo->last_file,
                                        (finfo->outsyms
                                         + ((finfo->last_file_index
                                            - syment_base)
                                           * osymesz)));
                  }
                else
                  {
                    file_ptr pos;

                    /* We have already written out the last C_FILE
                      symbol.  We need to write it out again.  We
                      borrow *outsym temporarily.  */
                    bfd_coff_swap_sym_out (output_bfd,
                                        &finfo->last_file, outsym);
                    pos = obj_sym_filepos (output_bfd);
                    pos += finfo->last_file_index * osymesz;
                    if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
                       || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz)
                     return FALSE;
                  }
              }

             finfo->last_file_index = output_index;
             finfo->last_file = isym;
             break;
           }

         /* If doing task linking, convert normal global function symbols to
            static functions.  */
         if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym))
           isym.n_sclass = C_STAT;

         /* Output the symbol.  */
         bfd_coff_swap_sym_out (output_bfd, &isym, outsym);

         *indexp = output_index;

         if (global)
           {
             long indx;
             struct coff_link_hash_entry *h;

             indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd))
                    / isymesz);
             h = obj_coff_sym_hashes (input_bfd)[indx];
             if (h == NULL)
              {
                /* This can happen if there were errors earlier in
                     the link.  */
                bfd_set_error (bfd_error_bad_value);
                return FALSE;
              }
             h->indx = output_index;
           }

         output_index += add;
         outsym += add * osymesz;
       }

      esym += add * isymesz;
      isymp += add;
      ++secpp;
      ++indexp;
      for (--add; add > 0; --add)
       {
         *secpp++ = NULL;
         *indexp++ = -1;
       }
    }

  /* Fix up the aux entries.  This must be done in a separate pass,
     because we don't know the correct symbol indices until we have
     already decided which symbols we are going to keep.  */
  esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
  esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
  isymp = finfo->internal_syms;
  indexp = finfo->sym_indices;
  sym_hash = obj_coff_sym_hashes (input_bfd);
  outsym = finfo->outsyms;

  while (esym < esym_end)
    {
      int add;

      add = 1 + isymp->n_numaux;

      if ((*indexp < 0
          || (bfd_size_type) *indexp < syment_base)
         && (*sym_hash == NULL
             || (*sym_hash)->auxbfd != input_bfd))
       esym += add * isymesz;
      else
       {
         struct coff_link_hash_entry *h;
         int i;

         h = NULL;
         if (*indexp < 0)
           {
             h = *sym_hash;

             /* The m68k-motorola-sysv assembler will sometimes
                 generate two symbols with the same name, but only one
                 will have aux entries.  */
             BFD_ASSERT (isymp->n_numaux == 0
                       || h->numaux == 0
                       || h->numaux == isymp->n_numaux);
           }

         esym += isymesz;

         if (h == NULL)
           outsym += osymesz;

         /* Handle the aux entries.  This handling is based on
            coff_pointerize_aux.  I don't know if it always correct.  */
         for (i = 0; i < isymp->n_numaux && esym < esym_end; i++)
           {
             union internal_auxent aux;
             union internal_auxent *auxp;

             if (h != NULL && h->aux != NULL && (h->numaux > i))
              auxp = h->aux + i;
             else
              {
                bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type,
                                   isymp->n_sclass, i, isymp->n_numaux, &aux);
                auxp = &aux;
              }

             if (isymp->n_sclass == C_FILE)
              {
                /* If this is a long filename, we must put it in the
                   string table.  */
                if (auxp->x_file.x_n.x_zeroes == 0
                    && auxp->x_file.x_n.x_offset != 0)
                  {
                    const char *filename;
                    bfd_size_type indx;

                    BFD_ASSERT (auxp->x_file.x_n.x_offset
                              >= STRING_SIZE_SIZE);
                    if (strings == NULL)
                     {
                       strings = _bfd_coff_read_string_table (input_bfd);
                       if (strings == NULL)
                         return FALSE;
                     }
                    filename = strings + auxp->x_file.x_n.x_offset;
                    indx = _bfd_stringtab_add (finfo->strtab, filename,
                                           hash, copy);
                    if (indx == (bfd_size_type) -1)
                     return FALSE;
                    auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx;
                  }
              }
             else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL)
                     && isymp->n_sclass != C_NT_WEAK)
              {
                unsigned long indx;

                if (ISFCN (isymp->n_type)
                    || ISTAG (isymp->n_sclass)
                    || isymp->n_sclass == C_BLOCK
                    || isymp->n_sclass == C_FCN)
                  {
                    indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l;
                    if (indx > 0
                       && indx < obj_raw_syment_count (input_bfd))
                     {
                       /* We look forward through the symbol for
                             the index of the next symbol we are going
                             to include.  I don't know if this is
                             entirely right.  */
                       while ((finfo->sym_indices[indx] < 0
                              || ((bfd_size_type) finfo->sym_indices[indx]
                                  < syment_base))
                             && indx < obj_raw_syment_count (input_bfd))
                         ++indx;
                       if (indx >= obj_raw_syment_count (input_bfd))
                         indx = output_index;
                       else
                         indx = finfo->sym_indices[indx];
                       auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx;
                     }
                  }

                indx = auxp->x_sym.x_tagndx.l;
                if (indx > 0 && indx < obj_raw_syment_count (input_bfd))
                  {
                    long symindx;

                    symindx = finfo->sym_indices[indx];
                    if (symindx < 0)
                     auxp->x_sym.x_tagndx.l = 0;
                    else
                     auxp->x_sym.x_tagndx.l = symindx;
                  }

                /* The .bf symbols are supposed to be linked through
                   the endndx field.  We need to carry this list
                   across object files.  */
                if (i == 0
                    && h == NULL
                    && isymp->n_sclass == C_FCN
                    && (isymp->_n._n_n._n_zeroes != 0
                       || isymp->_n._n_n._n_offset == 0)
                    && isymp->_n._n_name[0] == '.'
                    && isymp->_n._n_name[1] == 'b'
                    && isymp->_n._n_name[2] == 'f'
                    && isymp->_n._n_name[3] == '\0')
                  {
                    if (finfo->last_bf_index != -1)
                     {
                       finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l =
                         *indexp;

                       if ((bfd_size_type) finfo->last_bf_index
                           >= syment_base)
                         {
                           void *auxout;

                           /* The last .bf symbol is in this input
                             file.  This will only happen if the
                             assembler did not set up the .bf
                             endndx symbols correctly.  */
                           auxout = (finfo->outsyms
                                   + ((finfo->last_bf_index
                                       - syment_base)
                                      * osymesz));

                           bfd_coff_swap_aux_out (output_bfd,
                                               &finfo->last_bf,
                                               isymp->n_type,
                                               isymp->n_sclass,
                                               0, isymp->n_numaux,
                                               auxout);
                         }
                       else
                         {
                           file_ptr pos;

                           /* We have already written out the last
                                 .bf aux entry.  We need to write it
                                 out again.  We borrow *outsym
                                 temporarily.  FIXME: This case should
                                 be made faster.  */
                           bfd_coff_swap_aux_out (output_bfd,
                                               &finfo->last_bf,
                                               isymp->n_type,
                                               isymp->n_sclass,
                                               0, isymp->n_numaux,
                                               outsym);
                           pos = obj_sym_filepos (output_bfd);
                           pos += finfo->last_bf_index * osymesz;
                           if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
                              || (bfd_bwrite (outsym, osymesz, output_bfd)
                                  != osymesz))
                            return FALSE;
                         }
                     }

                    if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0)
                     finfo->last_bf_index = -1;
                    else
                     {
                       /* The endndx field of this aux entry must
                             be updated with the symbol number of the
                             next .bf symbol.  */
                       finfo->last_bf = *auxp;
                       finfo->last_bf_index = (((outsym - finfo->outsyms)
                                             / osymesz)
                                            + syment_base);
                     }
                  }
              }

             if (h == NULL)
              {
                bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type,
                                    isymp->n_sclass, i, isymp->n_numaux,
                                    outsym);
                outsym += osymesz;
              }

             esym += isymesz;
           }
       }

      indexp += add;
      isymp += add;
      sym_hash += add;
    }

  /* Relocate the line numbers, unless we are stripping them.  */
  if (finfo->info->strip == strip_none
      || finfo->info->strip == strip_some)
    {
      for (o = input_bfd->sections; o != NULL; o = o->next)
       {
         bfd_vma offset;
         bfd_byte *eline;
         bfd_byte *elineend;
         bfd_byte *oeline;
         bfd_boolean skipping;
         file_ptr pos;
         bfd_size_type amt;

         /* FIXME: If SEC_HAS_CONTENTS is not for the section, then
            build_link_order in ldwrite.c will not have created a
            link order, which means that we will not have seen this
            input section in _bfd_coff_final_link, which means that
            we will not have allocated space for the line numbers of
            this section.  I don't think line numbers can be
            meaningful for a section which does not have
            SEC_HAS_CONTENTS set, but, if they do, this must be
            changed.  */
         if (o->lineno_count == 0
             || (o->output_section->flags & SEC_HAS_CONTENTS) == 0)
           continue;

         if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0
             || bfd_bread (finfo->linenos, linesz * o->lineno_count,
                        input_bfd) != linesz * o->lineno_count)
           return FALSE;

         offset = o->output_section->vma + o->output_offset - o->vma;
         eline = finfo->linenos;
         oeline = finfo->linenos;
         elineend = eline + linesz * o->lineno_count;
         skipping = FALSE;
         for (; eline < elineend; eline += linesz)
           {
             struct internal_lineno iline;

             bfd_coff_swap_lineno_in (input_bfd, eline, &iline);

             if (iline.l_lnno != 0)
              iline.l_addr.l_paddr += offset;
             else if (iline.l_addr.l_symndx >= 0
                     && ((unsigned long) iline.l_addr.l_symndx
                        < obj_raw_syment_count (input_bfd)))
              {
                long indx;

                indx = finfo->sym_indices[iline.l_addr.l_symndx];

                if (indx < 0)
                  {
                    /* These line numbers are attached to a symbol
                      which we are stripping.  We must discard the
                      line numbers because reading them back with
                      no associated symbol (or associating them all
                      with symbol #0) will fail.  We can't regain
                      the space in the output file, but at least
                      they're dense.  */
                    skipping = TRUE;
                  }
                else
                  {
                    struct internal_syment is;
                    union internal_auxent ia;

                    /* Fix up the lnnoptr field in the aux entry of
                      the symbol.  It turns out that we can't do
                      this when we modify the symbol aux entries,
                      because gas sometimes screws up the lnnoptr
                      field and makes it an offset from the start
                      of the line numbers rather than an absolute
                      file index.  */
                    bfd_coff_swap_sym_in (output_bfd,
                                       (finfo->outsyms
                                        + ((indx - syment_base)
                                          * osymesz)), &is);
                    if ((ISFCN (is.n_type)
                        || is.n_sclass == C_BLOCK)
                       && is.n_numaux >= 1)
                     {
                       void *auxptr;

                       auxptr = (finfo->outsyms
                                + ((indx - syment_base + 1)
                                   * osymesz));
                       bfd_coff_swap_aux_in (output_bfd, auxptr,
                                          is.n_type, is.n_sclass,
                                          0, is.n_numaux, &ia);
                       ia.x_sym.x_fcnary.x_fcn.x_lnnoptr =
                         (o->output_section->line_filepos
                          + o->output_section->lineno_count * linesz
                          + eline - finfo->linenos);
                       bfd_coff_swap_aux_out (output_bfd, &ia,
                                           is.n_type, is.n_sclass, 0,
                                           is.n_numaux, auxptr);
                     }

                    skipping = FALSE;
                  }

                iline.l_addr.l_symndx = indx;
              }

             if (!skipping)
               {
                bfd_coff_swap_lineno_out (output_bfd, &iline, oeline);
                oeline += linesz;
              }
           }

         pos = o->output_section->line_filepos;
         pos += o->output_section->lineno_count * linesz;
         amt = oeline - finfo->linenos;
         if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
             || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt)
           return FALSE;

         o->output_section->lineno_count += amt / linesz;
       }
    }

  /* If we swapped out a C_FILE symbol, guess that the next C_FILE
     symbol will be the first symbol in the next input file.  In the
     normal case, this will save us from writing out the C_FILE symbol
     again.  */
  if (finfo->last_file_index != -1
      && (bfd_size_type) finfo->last_file_index >= syment_base)
    {
      finfo->last_file.n_value = output_index;
      bfd_coff_swap_sym_out (output_bfd, &finfo->last_file,
                          (finfo->outsyms
                           + ((finfo->last_file_index - syment_base)
                             * osymesz)));
    }

  /* Write the modified symbols to the output file.  */
  if (outsym > finfo->outsyms)
    {
      file_ptr pos;
      bfd_size_type amt;

      pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
      amt = outsym - finfo->outsyms;
      if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
         || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
       return FALSE;

      BFD_ASSERT ((obj_raw_syment_count (output_bfd)
                 + (outsym - finfo->outsyms) / osymesz)
                == output_index);

      obj_raw_syment_count (output_bfd) = output_index;
    }

  /* Relocate the contents of each section.  */
  adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx;
  for (o = input_bfd->sections; o != NULL; o = o->next)
    {
      bfd_byte *contents;
      struct coff_section_tdata *secdata;

      if (! o->linker_mark)
       /* This section was omitted from the link.  */
       continue;

      if ((o->flags & SEC_LINKER_CREATED) != 0)
       continue;

      if ((o->flags & SEC_HAS_CONTENTS) == 0
         || (o->size == 0 && (o->flags & SEC_RELOC) == 0))
       {
         if ((o->flags & SEC_RELOC) != 0
             && o->reloc_count != 0)
           {
             (*_bfd_error_handler)
              (_("%B: relocs in section `%A', but it has no contents"),
               input_bfd, o);
             bfd_set_error (bfd_error_no_contents);
             return FALSE;
           }

         continue;
       }

      secdata = coff_section_data (input_bfd, o);
      if (secdata != NULL && secdata->contents != NULL)
       contents = secdata->contents;
      else
       {
         bfd_size_type x = o->rawsize ? o->rawsize : o->size;
         if (! bfd_get_section_contents (input_bfd, o, finfo->contents, 0, x))
           return FALSE;
         contents = finfo->contents;
       }

      if ((o->flags & SEC_RELOC) != 0)
       {
         int target_index;
         struct internal_reloc *internal_relocs;
         struct internal_reloc *irel;

         /* Read in the relocs.  */
         target_index = o->output_section->target_index;
         internal_relocs = (_bfd_coff_read_internal_relocs
                          (input_bfd, o, FALSE, finfo->external_relocs,
                           finfo->info->relocatable,
                           (finfo->info->relocatable
                            ? (finfo->section_info[target_index].relocs
                              + o->output_section->reloc_count)
                            : finfo->internal_relocs)));
         if (internal_relocs == NULL)
           return FALSE;

         /* Call processor specific code to relocate the section
             contents.  */
         if (! bfd_coff_relocate_section (output_bfd, finfo->info,
                                      input_bfd, o,
                                      contents,
                                      internal_relocs,
                                      finfo->internal_syms,
                                      finfo->sec_ptrs))
           return FALSE;

         if (finfo->info->relocatable)
           {
             bfd_vma offset;
             struct internal_reloc *irelend;
             struct coff_link_hash_entry **rel_hash;

             offset = o->output_section->vma + o->output_offset - o->vma;
             irel = internal_relocs;
             irelend = irel + o->reloc_count;
             rel_hash = (finfo->section_info[target_index].rel_hashes
                       + o->output_section->reloc_count);
             for (; irel < irelend; irel++, rel_hash++)
              {
                struct coff_link_hash_entry *h;
                bfd_boolean adjusted;

                *rel_hash = NULL;

                /* Adjust the reloc address and symbol index.  */
                irel->r_vaddr += offset;

                if (irel->r_symndx == -1)
                  continue;

                if (adjust_symndx)
                  {
                    if (! (*adjust_symndx) (output_bfd, finfo->info,
                                         input_bfd, o, irel,
                                         &adjusted))
                     return FALSE;
                    if (adjusted)
                     continue;
                  }

                h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx];
                if (h != NULL)
                  {
                    /* This is a global symbol.  */
                    if (h->indx >= 0)
                     irel->r_symndx = h->indx;
                    else
                     {
                       /* This symbol is being written at the end
                          of the file, and we do not yet know the
                          symbol index.  We save the pointer to the
                          hash table entry in the rel_hash list.
                          We set the indx field to -2 to indicate
                          that this symbol must not be stripped.  */
                       *rel_hash = h;
                       h->indx = -2;
                     }
                  }
                else
                  {
                    long indx;

                    indx = finfo->sym_indices[irel->r_symndx];
                    if (indx != -1)
                     irel->r_symndx = indx;
                    else
                     {
                       struct internal_syment *is;
                       const char *name;
                       char buf[SYMNMLEN + 1];

                       /* This reloc is against a symbol we are
                             stripping.  This should have been handled
                          by the 'dont_skip_symbol' code in the while
                          loop at the top of this function.  */
                       is = finfo->internal_syms + irel->r_symndx;

                       name = (_bfd_coff_internal_syment_name
                              (input_bfd, is, buf));
                       if (name == NULL)
                         return FALSE;

                       if (! ((*finfo->info->callbacks->unattached_reloc)
                             (finfo->info, name, input_bfd, o,
                              irel->r_vaddr)))
                         return FALSE;
                     }
                  }
              }

             o->output_section->reloc_count += o->reloc_count;
           }
       }

      /* Write out the modified section contents.  */
      if (secdata == NULL || secdata->stab_info == NULL)
       {
         file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd);
         if (! bfd_set_section_contents (output_bfd, o->output_section,
                                     contents, loc, o->size))
           return FALSE;
       }
      else
       {
         if (! (_bfd_write_section_stabs
               (output_bfd, &coff_hash_table (finfo->info)->stab_info,
                o, &secdata->stab_info, contents)))
           return FALSE;
       }
    }

  if (! finfo->info->keep_memory
      && ! _bfd_coff_free_symbols (input_bfd))
    return FALSE;

  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

bfd_boolean _bfd_coff_reloc_link_order ( bfd output_bfd,
struct coff_final_link_info finfo,
asection output_section,
struct bfd_link_order link_order 
)

Definition at line 2694 of file cofflink.c.

{
  reloc_howto_type *howto;
  struct internal_reloc *irel;
  struct coff_link_hash_entry **rel_hash_ptr;

  howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
  if (howto == NULL)
    {
      bfd_set_error (bfd_error_bad_value);
      return FALSE;
    }

  if (link_order->u.reloc.p->addend != 0)
    {
      bfd_size_type size;
      bfd_byte *buf;
      bfd_reloc_status_type rstat;
      bfd_boolean ok;
      file_ptr loc;

      size = bfd_get_reloc_size (howto);
      buf = bfd_zmalloc (size);
      if (buf == NULL)
       return FALSE;

      rstat = _bfd_relocate_contents (howto, output_bfd,
                                  (bfd_vma) link_order->u.reloc.p->addend,\
                                  buf);
      switch (rstat)
       {
       case bfd_reloc_ok:
         break;
       default:
       case bfd_reloc_outofrange:
         abort ();
       case bfd_reloc_overflow:
         if (! ((*finfo->info->callbacks->reloc_overflow)
               (finfo->info, NULL,
                (link_order->type == bfd_section_reloc_link_order
                 ? bfd_section_name (output_bfd,
                                   link_order->u.reloc.p->u.section)
                 : link_order->u.reloc.p->u.name),
                howto->name, link_order->u.reloc.p->addend,
                (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
           {
             free (buf);
             return FALSE;
           }
         break;
       }
      loc = link_order->offset * bfd_octets_per_byte (output_bfd);
      ok = bfd_set_section_contents (output_bfd, output_section, buf,
                                     loc, size);
      free (buf);
      if (! ok)
       return FALSE;
    }

  /* Store the reloc information in the right place.  It will get
     swapped and written out at the end of the final_link routine.  */
  irel = (finfo->section_info[output_section->target_index].relocs
         + output_section->reloc_count);
  rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes
                + output_section->reloc_count);

  memset (irel, 0, sizeof (struct internal_reloc));
  *rel_hash_ptr = NULL;

  irel->r_vaddr = output_section->vma + link_order->offset;

  if (link_order->type == bfd_section_reloc_link_order)
    {
      /* We need to somehow locate a symbol in the right section.  The
         symbol must either have a value of zero, or we must adjust
         the addend by the value of the symbol.  FIXME: Write this
         when we need it.  The old linker couldn't handle this anyhow.  */
      abort ();
      *rel_hash_ptr = NULL;
      irel->r_symndx = 0;
    }
  else
    {
      struct coff_link_hash_entry *h;

      h = ((struct coff_link_hash_entry *)
          bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
                                    link_order->u.reloc.p->u.name,
                                    FALSE, FALSE, TRUE));
      if (h != NULL)
       {
         if (h->indx >= 0)
           irel->r_symndx = h->indx;
         else
           {
             /* Set the index to -2 to force this symbol to get
               written out.  */
             h->indx = -2;
             *rel_hash_ptr = h;
             irel->r_symndx = 0;
           }
       }
      else
       {
         if (! ((*finfo->info->callbacks->unattached_reloc)
               (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
                (asection *) NULL, (bfd_vma) 0)))
           return FALSE;
         irel->r_symndx = 0;
       }
    }

  /* FIXME: Is this always right?  */
  irel->r_type = howto->type;

  /* r_size is only used on the RS/6000, which needs its own linker
     routines anyhow.  r_extern is only used for ECOFF.  */

  /* FIXME: What is the right value for r_offset?  Is zero OK?  */
  ++output_section->reloc_count;

  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

Definition at line 2455 of file cofflink.c.

{
  struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
  bfd *output_bfd;
  struct internal_syment isym;
  bfd_size_type symesz;
  unsigned int i;
  file_ptr pos;

  output_bfd = finfo->output_bfd;

  if (h->root.type == bfd_link_hash_warning)
    {
      h = (struct coff_link_hash_entry *) h->root.u.i.link;
      if (h->root.type == bfd_link_hash_new)
       return TRUE;
    }

  if (h->indx >= 0)
    return TRUE;

  if (h->indx != -2
      && (finfo->info->strip == strip_all
         || (finfo->info->strip == strip_some
             && (bfd_hash_lookup (finfo->info->keep_hash,
                               h->root.root.string, FALSE, FALSE)
                == NULL))))
    return TRUE;

  switch (h->root.type)
    {
    default:
    case bfd_link_hash_new:
    case bfd_link_hash_warning:
      abort ();
      return FALSE;

    case bfd_link_hash_undefined:
    case bfd_link_hash_undefweak:
      isym.n_scnum = N_UNDEF;
      isym.n_value = 0;
      break;

    case bfd_link_hash_defined:
    case bfd_link_hash_defweak:
      {
       asection *sec;

       sec = h->root.u.def.section->output_section;
       if (bfd_is_abs_section (sec))
         isym.n_scnum = N_ABS;
       else
         isym.n_scnum = sec->target_index;
       isym.n_value = (h->root.u.def.value
                     + h->root.u.def.section->output_offset);
       if (! obj_pe (finfo->output_bfd))
         isym.n_value += sec->vma;
      }
      break;

    case bfd_link_hash_common:
      isym.n_scnum = N_UNDEF;
      isym.n_value = h->root.u.c.size;
      break;

    case bfd_link_hash_indirect:
      /* Just ignore these.  They can't be handled anyhow.  */
      return TRUE;
    }

  if (strlen (h->root.root.string) <= SYMNMLEN)
    strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN);
  else
    {
      bfd_boolean hash;
      bfd_size_type indx;

      hash = TRUE;
      if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
       hash = FALSE;
      indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash,
                             FALSE);
      if (indx == (bfd_size_type) -1)
       {
         finfo->failed = TRUE;
         return FALSE;
       }
      isym._n._n_n._n_zeroes = 0;
      isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
    }

  isym.n_sclass = h->class;
  isym.n_type = h->type;

  if (isym.n_sclass == C_NULL)
    isym.n_sclass = C_EXT;

  /* If doing task linking and this is the pass where we convert
     defined globals to statics, then do that conversion now.  If the
     symbol is not being converted, just ignore it and it will be
     output during a later pass.  */
  if (finfo->global_to_static)
    {
      if (! IS_EXTERNAL (output_bfd, isym))
       return TRUE;

      isym.n_sclass = C_STAT;
    }

  /* When a weak symbol is not overridden by a strong one,
     turn it into an external symbol when not building a
     shared or relocatable object.  */
  if (! finfo->info->shared
      && ! finfo->info->relocatable
      && IS_WEAK_EXTERNAL (finfo->output_bfd, isym))
    isym.n_sclass = C_EXT;

  isym.n_numaux = h->numaux;

  bfd_coff_swap_sym_out (output_bfd, &isym, finfo->outsyms);

  symesz = bfd_coff_symesz (output_bfd);

  pos = obj_sym_filepos (output_bfd);
  pos += obj_raw_syment_count (output_bfd) * symesz;
  if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
      || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
    {
      finfo->failed = TRUE;
      return FALSE;
    }

  h->indx = obj_raw_syment_count (output_bfd);

  ++obj_raw_syment_count (output_bfd);

  /* Write out any associated aux entries.  Most of the aux entries
     will have been modified in _bfd_coff_link_input_bfd.  We have to
     handle section aux entries here, now that we have the final
     relocation and line number counts.  */
  for (i = 0; i < isym.n_numaux; i++)
    {
      union internal_auxent *auxp;

      auxp = h->aux + i;

      /* Look for a section aux entry here using the same tests that
         coff_swap_aux_out uses.  */
      if (i == 0
         && (isym.n_sclass == C_STAT
             || isym.n_sclass == C_HIDDEN)
         && isym.n_type == T_NULL
         && (h->root.type == bfd_link_hash_defined
             || h->root.type == bfd_link_hash_defweak))
       {
         asection *sec;

         sec = h->root.u.def.section->output_section;
         if (sec != NULL)
           {
             auxp->x_scn.x_scnlen = sec->size;

             /* For PE, an overflow on the final link reportedly does
                 not matter.  FIXME: Why not?  */
             if (sec->reloc_count > 0xffff
                && (! obj_pe (output_bfd)
                    || finfo->info->relocatable))
              (*_bfd_error_handler)
                (_("%s: %s: reloc overflow: 0x%lx > 0xffff"),
                 bfd_get_filename (output_bfd),
                 bfd_get_section_name (output_bfd, sec),
                 sec->reloc_count);

             if (sec->lineno_count > 0xffff
                && (! obj_pe (output_bfd)
                    || finfo->info->relocatable))
              (*_bfd_error_handler)
                (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"),
                 bfd_get_filename (output_bfd),
                 bfd_get_section_name (output_bfd, sec),
                 sec->lineno_count);

             auxp->x_scn.x_nreloc = sec->reloc_count;
             auxp->x_scn.x_nlinno = sec->lineno_count;
             auxp->x_scn.x_checksum = 0;
             auxp->x_scn.x_associated = 0;
             auxp->x_scn.x_comdat = 0;
           }
       }

      bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type,
                          isym.n_sclass, (int) i, isym.n_numaux,
                          finfo->outsyms);
      if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
       {
         finfo->failed = TRUE;
         return FALSE;
       }
      ++obj_raw_syment_count (output_bfd);
    }

  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

Definition at line 2664 of file cofflink.c.

{
  struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
  bfd_boolean rtnval = TRUE;
  bfd_boolean save_global_to_static;

  if (h->root.type == bfd_link_hash_warning)
    h = (struct coff_link_hash_entry *) h->root.u.i.link;

  if (h->indx < 0)
    {
      switch (h->root.type)
       {
       case bfd_link_hash_defined:
       case bfd_link_hash_defweak:
         save_global_to_static = finfo->global_to_static;
         finfo->global_to_static = TRUE;
         rtnval = _bfd_coff_write_global_sym (h, data);
         finfo->global_to_static = save_global_to_static;
         break;
       default:
         break;
       }
    }
  return (rtnval);
}

Here is the call graph for this function:

Here is the caller graph for this function:

static bfd_boolean coff_link_add_object_symbols ( bfd abfd,
struct bfd_link_info info 
) [static]

Definition at line 179 of file cofflink.c.

{
  if (! _bfd_coff_get_external_symbols (abfd))
    return FALSE;
  if (! coff_link_add_symbols (abfd, info))
    return FALSE;

  if (! info->keep_memory
      && ! _bfd_coff_free_symbols (abfd))
    return FALSE;

  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static bfd_boolean coff_link_add_symbols ( bfd abfd,
struct bfd_link_info info 
) [static]

Definition at line 289 of file cofflink.c.

{
  unsigned int n_tmask = coff_data (abfd)->local_n_tmask;
  unsigned int n_btshft = coff_data (abfd)->local_n_btshft;
  unsigned int n_btmask = coff_data (abfd)->local_n_btmask;
  bfd_boolean keep_syms;
  bfd_boolean default_copy;
  bfd_size_type symcount;
  struct coff_link_hash_entry **sym_hash;
  bfd_size_type symesz;
  bfd_byte *esym;
  bfd_byte *esym_end;
  bfd_size_type amt;

  /* Keep the symbols during this function, in case the linker needs
     to read the generic symbols in order to report an error message.  */
  keep_syms = obj_coff_keep_syms (abfd);
  obj_coff_keep_syms (abfd) = TRUE;

  if (info->keep_memory)
    default_copy = FALSE;
  else
    default_copy = TRUE;

  symcount = obj_raw_syment_count (abfd);

  /* We keep a list of the linker hash table entries that correspond
     to particular symbols.  */
  amt = symcount * sizeof (struct coff_link_hash_entry *);
  sym_hash = bfd_zalloc (abfd, amt);
  if (sym_hash == NULL && symcount != 0)
    goto error_return;
  obj_coff_sym_hashes (abfd) = sym_hash;

  symesz = bfd_coff_symesz (abfd);
  BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
  esym = (bfd_byte *) obj_coff_external_syms (abfd);
  esym_end = esym + symcount * symesz;
  while (esym < esym_end)
    {
      struct internal_syment sym;
      enum coff_symbol_classification classification;
      bfd_boolean copy;

      bfd_coff_swap_sym_in (abfd, esym, &sym);

      classification = bfd_coff_classify_symbol (abfd, &sym);
      if (classification != COFF_SYMBOL_LOCAL)
       {
         const char *name;
         char buf[SYMNMLEN + 1];
         flagword flags;
         asection *section;
         bfd_vma value;
         bfd_boolean addit;

         /* This symbol is externally visible.  */

         name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
         if (name == NULL)
           goto error_return;

         /* We must copy the name into memory if we got it from the
             syment itself, rather than the string table.  */
         copy = default_copy;
         if (sym._n._n_n._n_zeroes != 0
             || sym._n._n_n._n_offset == 0)
           copy = TRUE;

         value = sym.n_value;

         switch (classification)
           {
           default:
             abort ();

           case COFF_SYMBOL_GLOBAL:
             flags = BSF_EXPORT | BSF_GLOBAL;
             section = coff_section_from_bfd_index (abfd, sym.n_scnum);
             if (! obj_pe (abfd))
              value -= section->vma;
             break;

           case COFF_SYMBOL_UNDEFINED:
             flags = 0;
             section = bfd_und_section_ptr;
             break;

           case COFF_SYMBOL_COMMON:
             flags = BSF_GLOBAL;
             section = bfd_com_section_ptr;
             break;

           case COFF_SYMBOL_PE_SECTION:
             flags = BSF_SECTION_SYM | BSF_GLOBAL;
             section = coff_section_from_bfd_index (abfd, sym.n_scnum);
             break;
           }

         if (IS_WEAK_EXTERNAL (abfd, sym))
           flags = BSF_WEAK;

         addit = TRUE;

         /* In the PE format, section symbols actually refer to the
             start of the output section.  We handle them specially
             here.  */
         if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
           {
             *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
                                           name, FALSE, copy, FALSE);
             if (*sym_hash != NULL)
              {
                if (((*sym_hash)->coff_link_hash_flags
                     & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0
                    && (*sym_hash)->root.type != bfd_link_hash_undefined
                    && (*sym_hash)->root.type != bfd_link_hash_undefweak)
                  (*_bfd_error_handler)
                    ("Warning: symbol `%s' is both section and non-section",
                     name);

                addit = FALSE;
              }
           }

         /* The Microsoft Visual C compiler does string pooling by
            hashing the constants to an internal symbol name, and
            relying on the linker comdat support to discard
            duplicate names.  However, if one string is a literal and
            one is a data initializer, one will end up in the .data
            section and one will end up in the .rdata section.  The
            Microsoft linker will combine them into the .data
            section, which seems to be wrong since it might cause the
            literal to change.

            As long as there are no external references to the
            symbols, which there shouldn't be, we can treat the .data
            and .rdata instances as separate symbols.  The comdat
            code in the linker will do the appropriate merging.  Here
            we avoid getting a multiple definition error for one of
            these special symbols.

            FIXME: I don't think this will work in the case where
            there are two object files which use the constants as a
            literal and two object files which use it as a data
            initializer.  One or the other of the second object files
            is going to wind up with an inappropriate reference.  */
         if (obj_pe (abfd)
             && (classification == COFF_SYMBOL_GLOBAL
                || classification == COFF_SYMBOL_PE_SECTION)
             && coff_section_data (abfd, section) != NULL
             && coff_section_data (abfd, section)->comdat != NULL
             && CONST_STRNEQ (name, "??_")
             && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0)
           {
             if (*sym_hash == NULL)
              *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
                                             name, FALSE, copy, FALSE);
             if (*sym_hash != NULL
                && (*sym_hash)->root.type == bfd_link_hash_defined
                && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL
                && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name,
                          coff_section_data (abfd, section)->comdat->name) == 0)
              addit = FALSE;
           }

         if (addit)
           {
             if (! (bfd_coff_link_add_one_symbol
                   (info, abfd, name, flags, section, value,
                    (const char *) NULL, copy, FALSE,
                    (struct bfd_link_hash_entry **) sym_hash)))
              goto error_return;
           }

         if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
           (*sym_hash)->coff_link_hash_flags |=
             COFF_LINK_HASH_PE_SECTION_SYMBOL;

         /* Limit the alignment of a common symbol to the possible
             alignment of a section.  There is no point to permitting
             a higher alignment for a common symbol: we can not
             guarantee it, and it may cause us to allocate extra space
             in the common section.  */
         if (section == bfd_com_section_ptr
             && (*sym_hash)->root.type == bfd_link_hash_common
             && ((*sym_hash)->root.u.c.p->alignment_power
                > bfd_coff_default_section_alignment_power (abfd)))
           (*sym_hash)->root.u.c.p->alignment_power
             = bfd_coff_default_section_alignment_power (abfd);

         if (info->hash->creator->flavour == bfd_get_flavour (abfd))
           {
             /* If we don't have any symbol information currently in
                 the hash table, or if we are looking at a symbol
                 definition, then update the symbol class and type in
                 the hash table.  */
             if (((*sym_hash)->class == C_NULL
                 && (*sym_hash)->type == T_NULL)
                || sym.n_scnum != 0
                || (sym.n_value != 0
                    && (*sym_hash)->root.type != bfd_link_hash_defined
                    && (*sym_hash)->root.type != bfd_link_hash_defweak))
              {
                (*sym_hash)->class = sym.n_sclass;
                if (sym.n_type != T_NULL)
                  {
                    /* We want to warn if the type changed, but not
                      if it changed from an unspecified type.
                      Testing the whole type byte may work, but the
                      change from (e.g.) a function of unspecified
                      type to function of known type also wants to
                      skip the warning.  */
                    if ((*sym_hash)->type != T_NULL
                       && (*sym_hash)->type != sym.n_type
                        && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type)
                             && (BTYPE ((*sym_hash)->type) == T_NULL
                                 || BTYPE (sym.n_type) == T_NULL)))
                     (*_bfd_error_handler)
                       (_("Warning: type of symbol `%s' changed from %d to %d in %B"),
                        abfd, name, (*sym_hash)->type, sym.n_type);

                    /* We don't want to change from a meaningful
                      base type to a null one, but if we know
                      nothing, take what little we might now know.  */
                    if (BTYPE (sym.n_type) != T_NULL
                       || (*sym_hash)->type == T_NULL)
                     (*sym_hash)->type = sym.n_type;
                  }
                (*sym_hash)->auxbfd = abfd;
                if (sym.n_numaux != 0)
                  {
                    union internal_auxent *alloc;
                    unsigned int i;
                    bfd_byte *eaux;
                    union internal_auxent *iaux;

                    (*sym_hash)->numaux = sym.n_numaux;
                    alloc = ((union internal_auxent *)
                            bfd_hash_allocate (&info->hash->table,
                                            (sym.n_numaux
                                             * sizeof (*alloc))));
                    if (alloc == NULL)
                     goto error_return;
                    for (i = 0, eaux = esym + symesz, iaux = alloc;
                        i < sym.n_numaux;
                        i++, eaux += symesz, iaux++)
                     bfd_coff_swap_aux_in (abfd, eaux, sym.n_type,
                                         sym.n_sclass, (int) i,
                                         sym.n_numaux, iaux);
                    (*sym_hash)->aux = alloc;
                  }
              }
           }

         if (classification == COFF_SYMBOL_PE_SECTION
             && (*sym_hash)->numaux != 0)
           {
             /* Some PE sections (such as .bss) have a zero size in
                 the section header, but a non-zero size in the AUX
                 record.  Correct that here.

               FIXME: This is not at all the right place to do this.
               For example, it won't help objdump.  This needs to be
               done when we swap in the section header.  */
             BFD_ASSERT ((*sym_hash)->numaux == 1);
             if (section->size == 0)
              section->size = (*sym_hash)->aux[0].x_scn.x_scnlen;

             /* FIXME: We could test whether the section sizes
                 matches the size in the aux entry, but apparently
                 that sometimes fails unexpectedly.  */
           }
       }

      esym += (sym.n_numaux + 1) * symesz;
      sym_hash += sym.n_numaux + 1;
    }

  /* If this is a non-traditional, non-relocatable link, try to
     optimize the handling of any .stab/.stabstr sections.  */
  if (! info->relocatable
      && ! info->traditional_format
      && info->hash->creator->flavour == bfd_get_flavour (abfd)
      && (info->strip != strip_all && info->strip != strip_debugger))
    {
      asection *stabstr;

      stabstr = bfd_get_section_by_name (abfd, ".stabstr");

      if (stabstr != NULL)
       {
         bfd_size_type string_offset = 0;
         asection *stab;
         
         for (stab = abfd->sections; stab; stab = stab->next)
           if (CONST_STRNEQ (stab->name, ".stab")
              && (!stab->name[5]
                  || (stab->name[5] == '.' && ISDIGIT (stab->name[6]))))
           {
             struct coff_link_hash_table *table;
             struct coff_section_tdata *secdata
              = coff_section_data (abfd, stab);
             
             if (secdata == NULL)
              {
                amt = sizeof (struct coff_section_tdata);
                stab->used_by_bfd = bfd_zalloc (abfd, amt);
                if (stab->used_by_bfd == NULL)
                  goto error_return;
                secdata = coff_section_data (abfd, stab);
              }

             table = coff_hash_table (info);

             if (! _bfd_link_section_stabs (abfd, &table->stab_info,
                                        stab, stabstr,
                                        &secdata->stab_info,
                                        &string_offset))
              goto error_return;
           }
       }
    }

  obj_coff_keep_syms (abfd) = keep_syms;

  return TRUE;

 error_return:
  obj_coff_keep_syms (abfd) = keep_syms;
  return FALSE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static bfd_boolean coff_link_check_ar_symbols ( bfd abfd,
struct bfd_link_info info,
bfd_boolean pneeded 
) [static]

Definition at line 197 of file cofflink.c.

{
  bfd_size_type symesz;
  bfd_byte *esym;
  bfd_byte *esym_end;

  *pneeded = FALSE;

  symesz = bfd_coff_symesz (abfd);
  esym = (bfd_byte *) obj_coff_external_syms (abfd);
  esym_end = esym + obj_raw_syment_count (abfd) * symesz;
  while (esym < esym_end)
    {
      struct internal_syment sym;
      enum coff_symbol_classification classification;

      bfd_coff_swap_sym_in (abfd, esym, &sym);

      classification = bfd_coff_classify_symbol (abfd, &sym);
      if (classification == COFF_SYMBOL_GLOBAL
         || classification == COFF_SYMBOL_COMMON)
       {
         const char *name;
         char buf[SYMNMLEN + 1];
         struct bfd_link_hash_entry *h;

         /* This symbol is externally visible, and is defined by this
             object file.  */
         name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
         if (name == NULL)
           return FALSE;
         h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);

         /* Auto import.  */
         if (!h
             && info->pei386_auto_import
             && CONST_STRNEQ (name, "__imp_"))
           h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE);

         /* We are only interested in symbols that are currently
            undefined.  If a symbol is currently known to be common,
            COFF linkers do not bring in an object file which defines
            it.  */
         if (h != (struct bfd_link_hash_entry *) NULL
             && h->type == bfd_link_hash_undefined)
           {
             if (! (*info->callbacks->add_archive_element) (info, abfd, name))
              return FALSE;
             *pneeded = TRUE;
             return TRUE;
           }
       }

      esym += (sym.n_numaux + 1) * symesz;
    }

  /* We do not need this object file.  */
  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static bfd_boolean coff_link_check_archive_element ( bfd abfd,
struct bfd_link_info info,
bfd_boolean pneeded 
) [static]

Definition at line 265 of file cofflink.c.

{
  if (! _bfd_coff_get_external_symbols (abfd))
    return FALSE;

  if (! coff_link_check_ar_symbols (abfd, info, pneeded))
    return FALSE;

  if (*pneeded
      && ! coff_link_add_symbols (abfd, info))
    return FALSE;

  if ((! info->keep_memory || ! *pneeded)
      && ! _bfd_coff_free_symbols (abfd))
    return FALSE;

  return TRUE;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static char* dores_com ( char *  ptr,
bfd output_bfd,
int  heap 
) [static]

Definition at line 1170 of file cofflink.c.

{
  if (coff_data(output_bfd)->pe)
    {
      int val = strtoul (ptr, &ptr, 0);

      if (heap)
       pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val;
      else
       pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val;

      if (ptr[0] == ',')
       {
         val = strtoul (ptr+1, &ptr, 0);
         if (heap)
           pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val;
         else
           pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val;
       }
    }
  return ptr;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static char* get_name ( char *  ptr,
char **  dst 
) [static]

Definition at line 1194 of file cofflink.c.

{
  while (*ptr == ' ')
    ptr++;
  *dst = ptr;
  while (*ptr && *ptr != ' ')
    ptr++;
  *ptr = 0;
  return ptr+1;
}

Here is the caller graph for this function:

static void mark_relocs ( struct coff_final_link_info finfo,
bfd input_bfd 
) [static]

Definition at line 1294 of file cofflink.c.

{
  asection * a;

  if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0)
    return;

  for (a = input_bfd->sections; a != (asection *) NULL; a = a->next)
    {
      struct internal_reloc *      internal_relocs;
      struct internal_reloc *      irel;
      struct internal_reloc *      irelend;

      if ((a->flags & SEC_RELOC) == 0 || a->reloc_count  < 1)
       continue;
      /* Don't mark relocs in excluded sections.  */
      if (a->output_section == bfd_abs_section_ptr)
       continue;

      /* Read in the relocs.  */
      internal_relocs = _bfd_coff_read_internal_relocs
       (input_bfd, a, FALSE,
        finfo->external_relocs,
        finfo->info->relocatable,
        (finfo->info->relocatable
         ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count)
         : finfo->internal_relocs)
       );

      if (internal_relocs == NULL)
       continue;

      irel     = internal_relocs;
      irelend  = irel + a->reloc_count;

      /* Place a mark in the sym_indices array (whose entries have
        been initialised to 0) for all of the symbols that are used
        in the relocation table.  This will then be picked up in the
        skip/don't-skip pass.  */
      for (; irel < irelend; irel++)
       finfo->sym_indices[ irel->r_symndx ] = -1;
    }
}

Here is the call graph for this function:

Here is the caller graph for this function:

static int process_embedded_commands ( bfd output_bfd,
struct bfd_link_info *info  ATTRIBUTE_UNUSED,
bfd abfd 
) [static]

Definition at line 1208 of file cofflink.c.

{
  asection *sec = bfd_get_section_by_name (abfd, ".drectve");
  char *s;
  char *e;
  bfd_byte *copy;

  if (!sec)
    return 1;

  if (!bfd_malloc_and_get_section (abfd, sec, &copy))
    {
      if (copy != NULL)
       free (copy);
      return 0;
    }
  e = (char *) copy + sec->size;

  for (s = (char *) copy; s < e ; )
    {
      if (s[0] != '-')
       {
         s++;
         continue;
       }
      if (CONST_STRNEQ (s, "-attr"))
       {
         char *name;
         char *attribs;
         asection *asec;
         int loop = 1;
         int had_write = 0;
         int had_exec= 0;

         s += 5;
         s = get_name (s, &name);
         s = get_name (s, &attribs);

         while (loop)
           {
             switch (*attribs++)
              {
              case 'W':
                had_write = 1;
                break;
              case 'R':
                break;
              case 'S':
                break;
              case 'X':
                had_exec = 1;
                break;
              default:
                loop = 0;
              }
           }
         asec = bfd_get_section_by_name (abfd, name);
         if (asec)
           {
             if (had_exec)
              asec->flags |= SEC_CODE;
             if (!had_write)
              asec->flags |= SEC_READONLY;
           }
       }
      else if (CONST_STRNEQ (s, "-heap"))
       s = dores_com (s + 5, output_bfd, 1);

      else if (CONST_STRNEQ (s, "-stack"))
       s = dores_com (s + 6, output_bfd, 0);

      else
       s++;
    }
  free (copy);
  return 1;
}

Here is the call graph for this function:

Here is the caller graph for this function: