bfd/coff-bfd.c

   1 /* BFD COFF interfaces used outside of BFD.
   2    Copyright (C) 1990-2017 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "libbfd.h"
  25 #include "coff/internal.h"
  26 #include "libcoff.h"
  27
  28 /* Return the COFF syment for a symbol.  */
  29
  30 bfd_boolean
  31 bfd_coff_get_syment (bfd *abfd,
  32                      asymbol *symbol,
  33                      struct internal_syment *psyment)
  34 {
  35   coff_symbol_type *csym;
  36
  37   csym = coff_symbol_from (symbol);
  38   if (csym == NULL || csym->native == NULL
  39       || ! csym->native->is_sym)
  40     {
  41       bfd_set_error (bfd_error_invalid_operation);
  42       return FALSE;
  43     }
  44
  45   *psyment = csym->native->u.syment;
  46
  47   if (csym->native->fix_value)
  48     psyment->n_value = psyment->n_value -
  49       (bfd_hostptr_t) obj_raw_syments (abfd);
  50
  51   /* FIXME: We should handle fix_line here.  */
  52
  53   return TRUE;
  54 }
  55
  56 /* Return the COFF auxent for a symbol.  */
  57
  58 bfd_boolean
  59 bfd_coff_get_auxent (bfd *abfd,
  60                      asymbol *symbol,
  61                      int indx,
  62                      union internal_auxent *pauxent)
  63 {
  64   coff_symbol_type *csym;
  65   combined_entry_type *ent;
  66
  67   csym = coff_symbol_from (symbol);
  68
  69   if (csym == NULL
  70       || csym->native == NULL
  71       || ! csym->native->is_sym
  72       || indx >= csym->native->u.syment.n_numaux)
  73     {
  74       bfd_set_error (bfd_error_invalid_operation);
  75       return FALSE;
  76     }
  77
  78   ent = csym->native + indx + 1;
  79
  80   BFD_ASSERT (! ent->is_sym);
  81   *pauxent = ent->u.auxent;
  82
  83   if (ent->fix_tag)
  84     pauxent->x_sym.x_tagndx.l =
  85       ((combined_entry_type *) pauxent->x_sym.x_tagndx.p
  86        - obj_raw_syments (abfd));
  87
  88   if (ent->fix_end)
  89     pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l =
  90       ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p
  91        - obj_raw_syments (abfd));
  92
  93   if (ent->fix_scnlen)
  94     pauxent->x_csect.x_scnlen.l =
  95       ((combined_entry_type *) pauxent->x_csect.x_scnlen.p
  96        - obj_raw_syments (abfd));
  97
  98   return TRUE;
  99 }