ld/emultempl/vxworks.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright (C) 2006-2021 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Binutils.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19 # MA 02110-1301, USA.
  20 #
  21
  22 if test -n "$VXWORKS_BASE_EM_FILE" ; then
  23   source_em "${srcdir}/emultempl/${VXWORKS_BASE_EM_FILE}.em"
  24 fi
  25
  26 fragment <<EOF
  27
  28 static int force_dynamic;
  29
  30 static void
  31 vxworks_before_parse (void)
  32 {
  33   ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse} ();
  34   config.rpath_separator = ';';
  35 }
  36
  37 static void
  38 vxworks_after_open (void)
  39 {
  40   ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open} ();
  41
  42   if (force_dynamic
  43       && link_info.input_bfds
  44       && bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
  45       && !_bfd_elf_link_create_dynamic_sections (link_info.input_bfds,
  46                                                  &link_info))
  47     einfo (_("%X%P: cannot create dynamic sections %E\n"));
  48
  49   if (!force_dynamic
  50       && !bfd_link_pic (&link_info)
  51       && bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour
  52       && elf_hash_table (&link_info)->dynamic_sections_created)
  53     einfo (_("%X%P: dynamic sections created in non-dynamic link\n"));
  54 }
  55
  56 EOF
  57
  58 PARSE_AND_LIST_PROLOGUE=$PARSE_AND_LIST_PROLOGUE'
  59 enum {
  60   OPTION_FORCE_DYNAMIC = 501
  61 };
  62 '
  63
  64 PARSE_AND_LIST_LONGOPTS=$PARSE_AND_LIST_LONGOPTS'
  65   {"force-dynamic", no_argument, NULL, OPTION_FORCE_DYNAMIC},
  66 '
  67
  68 PARSE_AND_LIST_OPTIONS=$PARSE_AND_LIST_OPTIONS'
  69   fprintf (file, _("\
  70   --force-dynamic             Always create dynamic sections\n"));
  71 '
  72
  73 PARSE_AND_LIST_ARGS_CASES=$PARSE_AND_LIST_ARGS_CASES'
  74     case OPTION_FORCE_DYNAMIC:
  75       force_dynamic = 1;
  76       break;
  77 '
  78
  79 # Hook in our routines above.  There are three possibilities:
  80 #
  81 #   (1) VXWORKS_BASE_EM_FILE did not set the hook's LDEMUL_FOO variable.
  82 #       We want to define LDEMUL_FOO to vxworks_foo in that case,
  83 #
  84 #   (2) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
  85 #       gld${EMULATION_NAME}_foo.  This means that the file has
  86 #       replaced elf.em's default definition, so we simply #define
  87 #       the current value of LDEMUL_FOO to vxworks_foo.
  88 #
  89 #   (3) VXWORKS_BASE_EM_FILE set the hook's LDEMUL_FOO variable to
  90 #       something other than gld${EMULATION_NAME}_foo.  We handle
  91 #       this case in the same way as (1).
  92 for override in before_parse after_open; do
  93   var="LDEMUL_`echo ${override} | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`"
  94   eval value=\$${var}
  95   if test "${value}" = "gld${EMULATION_NAME}_${override}"; then
  96     fragment <<EOF
  97 #define ${value} vxworks_${override}
  98 EOF
  99   else
 100     eval $var=vxworks_${override}
 101   fi
 102 done